One of two groups of viruses in the ARENAVIRUS genus and considered part of the New World complex. It includes JUNIN VIRUS; PICHINDE VIRUS; Amapari virus, and Machupo virus among others. They are the cause of human hemorrhagic fevers mostly in Central and South America.
One of two groups of viruses in the ARENAVIRUS genus and considered part of the Old World complex. It includes LASSA VIRUS and LYMPHOCYTIC CHORIOMENINGITIS VIRUS, although the latter has worldwide distribution now.
The only genus in the family ARENAVIRIDAE. It contains two groups ARENAVIRUSES, OLD WORLD and ARENAVIRUSES, NEW WORLD, which are distinguished by antigenic relationships and geographic distribution.
Virus diseases caused by the ARENAVIRIDAE.
A species of ARENAVIRUS, part of the Old World Arenaviruses (ARENAVIRUSES, OLD WORLD), and the etiologic agent of LASSA FEVER. LASSA VIRUS is a common infective agent in humans in West Africa. Its natural host is the multimammate mouse Mastomys natalensis.
A family of RNA viruses naturally infecting rodents and consisting of one genus (ARENAVIRUS) with two groups: Old World Arenaviruses (ARENAVIRUSES, OLD WORLD) and New World Arenaviruses (ARENAVIRUSES, NEW WORLD). Infection in rodents is persistent and silent. Vertical transmission is through milk-, saliva-, or urine-borne routes. Horizontal transmission to humans, monkeys, and other animals is important.
A group of viral diseases of diverse etiology but having many similar clinical characteristics; increased capillary permeability, leukopenia, and thrombocytopenia are common to all. Hemorrhagic fevers are characterized by sudden onset, fever, headache, generalized myalgia, backache, conjunctivitis, and severe prostration, followed by various hemorrhagic symptoms. Hemorrhagic fever with kidney involvement is HEMORRHAGIC FEVER WITH RENAL SYNDROME.
An infraorder of New World monkeys, comprised of the families AOTIDAE; ATELIDAE; CEBIDAE; and PITHECIIDAE. They are found exclusively in the Americas.
A species of ARENAVIRUS, part of the New World Arenaviruses (ARENAVIRUSES, NEW WORLD), causing Argentinian hemorrhagic fever. The disease is characterized by congestion, edema, generalized lymphadenopathy and hemorrhagic necrosis and is sometimes fatal.
Diseases caused by American hemorrhagic fever viruses (ARENAVIRUSES, NEW WORLD).
A family of New World monkeys in the infraorder PLATYRRHINI, consisting of nine subfamilies: ALOUATTINAE; AOTINAE; Atelinae; Callicebinae; CALLIMICONINAE; CALLITRICHINAE; CEBINAE; Pithecinae; and SAIMIRINAE. They inhabit the forests of South and Central America, comprising the largest family of South American monkeys.
A species of ARENAVIRUS, one of the New World Arenaviruses (ARENAVIRUSES, NEW WORLD), causing a fatal infection in the cricetine rodent Oryzomys albigularis. Asymptomatic laboratory infection in humans has been reported.
Biological activities of viruses and their interactions with the cells they infect.
The type species of ARENAVIRUS, part of the Old World Arenaviruses (ARENAVIRUSES, OLD WORLD), producing a silent infection in house and laboratory mice. In humans, infection with LCMV can be inapparent, or can present with an influenza-like illness, a benign aseptic meningitis, or a severe meningoencephalomyelitis. The virus can also infect monkeys, dogs, field mice, guinea pigs, and hamsters, the latter an epidemiologically important host.
The family of Old World monkeys and baboons consisting of two subfamilies: CERCOPITHECINAE and COLOBINAE. They are found in Africa and part of Asia.
Dystrophin-associated proteins that play role in the formation of a transmembrane link between laminin-2 and DYSTROPHIN. Both the alpha and the beta subtypes of dystroglycan originate via POST-TRANSLATIONAL PROTEIN PROCESSING of a single precursor protein.
The relationships of groups of organisms as reflected by their genetic makeup.
A group of iron-binding proteins that tightly bind two ferrate ions along with two carbonate ions. They are found in the bodily fluids of vertebrates where they act as transport and storage molecules for iron.
A genus of the subfamily CALLITRICHINAE occurring in forests of Brazil and Bolivia and containing seventeen species.
A family of RNA viruses, of the order MONONEGAVIRALES, containing filamentous virions. Although they resemble RHABDOVIRIDAE in possessing helical nucleocapsids, Filoviridae differ in the length and degree of branching in their virions. There are two genera: EBOLAVIRUS and MARBURGVIRUS.
An acute febrile human disease caused by the LASSA VIRUS.
The general name for NORTH AMERICA; CENTRAL AMERICA; and SOUTH AMERICA unspecified or combined.
A genus in the subfamily CALLITRICHINAE consisting of 12 species and found in Panama as well as South America. Species seen most frequently in the literature are S. oedipus (cotton-top marmoset), S. nigricollis, and S. fusicollis.
A genus of the family CEBIDAE consisting of four species: S. boliviensis, S. orstedii (red-backed squirrel monkey), S. sciureus (common squirrel monkey), and S. ustus. They inhabit tropical rain forests in Central and South America. S. sciureus is used extensively in research studies.
The entering of cells by viruses following VIRUS ATTACHMENT. This is achieved by ENDOCYTOSIS, by direct MEMBRANE FUSION of the viral membrane with the CELL MEMBRANE, or by translocation of the whole virus across the cell membrane.
A family of the New World monkeys inhabiting the forests of South and Central America. There is a single genus and several species occurring in this family, including AOTUS TRIVIRGATUS (Northern night monkeys).
A family of snakes comprising the boas, anacondas, and pythons. They occupy a variety of habitats through the tropics and subtropics and are arboreal, aquatic or fossorial (burrowing). Some are oviparous, others ovoviviparous. Contrary to popular opinion, they do not crush the bones of their victims: their coils exert enough pressure to stop a prey's breathing, thus suffocating it. There are five subfamilies: Boinae, Bolyerinae, Erycinae, Pythoninae, and Tropidophiinae. (Goin, Goin, and Zug, Introduction to Herpetology, 3d ed, p315-320)
Specific molecular components of the cell capable of recognizing and interacting with a virus, and which, after binding it, are capable of generating some signal that initiates the chain of events leading to the biological response.
A genus of the family CEBIDAE, subfamily CEBINAE, consisting of four species which are divided into two groups, the tufted and untufted. C. apella has tufts of hair over the eyes and sides of the head. The remaining species are without tufts - C. capucinus, C. nigrivultatus, and C. albifrons. Cebus inhabits the forests of Central and South America.
A CELL LINE derived from the kidney of the African green (vervet) monkey, (CERCOPITHECUS AETHIOPS) used primarily in virus replication studies and plaque assays.
A species of CERCOPITHECUS containing three subspecies: C. tantalus, C. pygerythrus, and C. sabeus. They are found in the forests and savannah of Africa. The African green monkey (C. pygerythrus) is the natural host of SIMIAN IMMUNODEFICIENCY VIRUS and is used in AIDS research.
Limbless REPTILES of the suborder Serpentes.
Diseases of rodents of the order RODENTIA. This term includes diseases of Sciuridae (squirrels), Geomyidae (gophers), Heteromyidae (pouched mice), Castoridae (beavers), Cricetidae (rats and mice), Muridae (Old World rats and mice), Erethizontidae (porcupines), and Caviidae (guinea pigs).
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A mammalian order which consists of 29 families and many genera.
Proteins conjugated with nucleic acids.
Membrane glycoproteins found in high concentrations on iron-utilizing cells. They specifically bind iron-bearing transferrin, are endocytosed with its ligand and then returned to the cell surface where transferrin without its iron is released.
Proteins found in any species of virus.
A genus of the subfamily ALOUATTINAE, family ATELIDAE, inhabiting the forests of Central and South America. Howlers travel in groups and define their territories by howling accompanied by vigorously shaking and breaking branches.
The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
The binding of virus particles to receptors on the host cell surface. For enveloped viruses, the virion ligand is usually a surface glycoprotein as is the cellular receptor. For non-enveloped viruses, the virus CAPSID serves as the ligand.
A genus of the subfamily SIGMODONTINAE consisting of 49 species. Two of these are widely used in medical research. They are P. leucopus, or the white-footed mouse, and P. maniculatus, or the deer mouse.
Viral proteins found in either the NUCLEOCAPSID or the viral core (VIRAL CORE PROTEINS).
A species in the family AOTIDAE, inhabiting the forested regions of Central and South America (from Panama to the Amazon). Vocalizations occur primarily at night when they are active, thus they are also known as Northern night monkeys.
Ribonucleic acid that makes up the genetic material of viruses.
An area showing altered staining behavior in the nucleus or cytoplasm of a virus-infected cell. Some inclusion bodies represent "virus factories" in which viral nucleic acid or protein is being synthesized; others are merely artifacts of fixation and staining. One example, Negri bodies, are found in the cytoplasm or processes of nerve cells in animals that have died from rabies.
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
A subfamily in the family ATELIDAE, comprising three genera: woolly monkeys (Lagothrix), spider monkeys (Ateles), and woolly spider monkeys (Brachyteles).
Conjugated protein-carbohydrate compounds including mucins, mucoid, and amyloid glycoproteins.
The period of history before 500 of the common era.
A tomographic technique for obtaining 3-dimensional images with transmission electron microscopy.
The interactions between a host and a pathogen, usually resulting in disease.
Proteolytic enzymes that are involved in the conversion of protein precursors such as peptide prohormones into PEPTIDE HORMONES. Some are ENDOPEPTIDASES, some are EXOPEPTIDASES.
A suborder of PRIMATES consisting of the following five families: CHEIROGALEIDAE; Daubentoniidae; Indriidae; LEMURIDAE; and LORISIDAE.
A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS.
A specialized agency of the United Nations designed as a coordinating authority on international health work; its aim is to promote the attainment of the highest possible level of health by all peoples.
Suspensions of attenuated or killed viruses administered for the prevention or treatment of infectious viral disease.
Ruminant mammals of South America. They are related to camels.
Established cell cultures that have the potential to propagate indefinitely.
Release of a virus from the host cell following VIRUS ASSEMBLY and maturation. Egress can occur by host cell lysis, EXOCYTOSIS, or budding through the plasma membrane.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly.
The concept pertaining to the health status of inhabitants of the world.
The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.
The complete genetic complement contained in a DNA or RNA molecule in a virus.
Viruses whose genetic material is RNA.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.
A subfamily in the family CEBIDAE that consists of four genera: CALLITHRIX (marmosets), CALLIMICO (Goeldi's monkey), LEONTOPITHECUS (lion tamarins), and SAGUINUS (long-tusked tamarins). The members of this family inhabit the tropical forests of South and Central America.
A family of New World monkeys in the infraorder PLATYRRHINI consisting of two subfamilies: Callicebinae and Pitheciinae.
Time period from 1401 through 1500 of the common era.
Layers of protein which surround the capsid in animal viruses with tubular nucleocapsids. The envelope consists of an inner layer of lipids and virus specified proteins also called membrane or matrix proteins. The outer layer consists of one or more types of morphological subunits called peplomers which project from the viral envelope; this layer always consists of glycoproteins.
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
A form of meningitis caused by LYMPHOCYTIC CHORIOMENINGITIS VIRUS. MICE and other rodents serve as the natural hosts, and infection in humans usually occurs through inhalation or ingestion of infectious particles. Clinical manifestations include an influenza-like syndrome followed by stiff neck, alterations of mentation, ATAXIA, and incontinence. Maternal infections may result in fetal malformations and injury, including neonatal HYDROCEPHALUS, aqueductal stenosis, CHORIORETINITIS, and MICROCEPHALY. (From Joynt, Clinical Neurology, 1996, Ch26, pp1-3)
Individual members of South American ethnic groups with historic ancestral origins in Asia.
Diseases of Old World and New World monkeys. This term includes diseases of baboons but not of chimpanzees or gorillas (= APE DISEASES).
A disease characterized by the chronic, progressive spread of lesions from New World cutaneous leishmaniasis caused by species of the L. braziliensis complex to the nasal, pharyngeal, and buccal mucosa some time after the appearance of the initial cutaneous lesion. Nasal obstruction and epistaxis are frequent presenting symptoms.
Family of the suborder HAPLORHINI (Anthropoidea) comprising bipedal primate MAMMALS. It includes modern man (HOMO SAPIENS) and the great apes: gorillas (GORILLA GORILLA), chimpanzees (PAN PANISCUS and PAN TROGLODYTES), and orangutans (PONGO PYGMAEUS).
A genus of flagellate protozoa comprising several species that are pathogenic for humans. Organisms of this genus have an amastigote and a promastigote stage in their life cycles. As a result of enzymatic studies this single genus has been divided into two subgenera: Leishmania leishmania and Leishmania viannia. Species within the Leishmania leishmania subgenus include: L. aethiopica, L. arabica, L. donovani, L. enrietti, L. gerbilli, L. hertigi, L. infantum, L. major, L. mexicana, and L. tropica. The following species are those that compose the Leishmania viannia subgenus: L. braziliensis, L. guyanensis, L. lainsoni, L. naiffi, and L. shawi.
The process of intracellular viral multiplication, consisting of the synthesis of PROTEINS; NUCLEIC ACIDS; and sometimes LIPIDS, and their assembly into a new infectious particle.
A region, north-central Asia, largely in Russia. It extends from the Ural Mountains to the Pacific Ocean and from the Arctic Ocean to central Kazakhstan and the borders of China and Mongolia.
A genus of the family BUNYAVIRIDAE causing HANTAVIRUS INFECTIONS, first identified during the Korean war. Infection is found primarily in rodents and humans. Transmission does not appear to involve arthropods. HANTAAN VIRUS is the type species.
Process of growing viruses in live animals, plants, or cultured cells.
The science dealing with the earth and its life, especially the description of land, sea, and air and the distribution of plant and animal life, including humanity and human industries with reference to the mutual relations of these elements. (From Webster, 3d ed)
Time period from 1501 through 1600 of the common era.
The largest of the continents. It was known to the Romans more specifically as what we know today as Asia Minor. The name comes from at least two possible sources: from the Assyrian asu (to rise) or from the Sanskrit usa (dawn), both with reference to its being the land of the rising sun, i.e., eastern as opposed to Europe, to the west. (From Webster's New Geographical Dictionary, 1988, p82 & Room, Brewer's Dictionary of Names, 1992, p34)
The infective system of a virus, composed of the viral genome, a protein core, and a protein coat called a capsid, which may be naked or enclosed in a lipoprotein envelope called the peplos.
Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen.
The wood fern plant family of the order Polypodiales, class Filicopsida, division Pteridophyta.
A suborder of PRIMATES consisting of six families: CEBIDAE (some New World monkeys), ATELIDAE (some New World monkeys), CERCOPITHECIDAE (Old World monkeys), HYLOBATIDAE (gibbons and siamangs), CALLITRICHINAE (marmosets and tamarins), and HOMINIDAE (humans and great apes).
Immunoglobulins produced in response to VIRAL ANTIGENS.
Double-stranded DNA of MITOCHONDRIA. In eukaryotes, the mitochondrial GENOME is circular and codes for ribosomal RNAs, transfer RNAs, and about 10 proteins.
Electron microscopy involving rapid freezing of the samples. The imaging of frozen-hydrated molecules and organelles permits the best possible resolution closest to the living state, free of chemical fixatives or stains.
Genotypic differences observed among individuals in a population.
Substances elaborated by viruses that have antigenic activity.
A monocot plant family of the Liliopsida class. It is classified by some in the Liliales order and some in the Asparagales order.
An endemic disease that is characterized by the development of single or multiple localized lesions on exposed areas of skin that typically ulcerate. The disease has been divided into Old and New World forms. Old World leishmaniasis is separated into three distinct types according to epidemiology and clinical manifestations and is caused by species of the L. tropica and L. aethiopica complexes as well as by species of the L. major genus. New World leishmaniasis, also called American leishmaniasis, occurs in South and Central America and is caused by species of the L. mexicana or L. braziliensis complexes.
A species of SPUMAVIRUS causing non-pathogenic infections in chimpanzees and humans.
A genus of the family Lemuridae consisting of five species: L. catta (ring-tailed lemur), L. fulvus, L. macaco (acoumba or black lemur), L. mongoz (mongoose lemur), and L. variegatus (white lemur). Most members of this genus occur in forested areas on Madagascar and the Comoro Islands.
The scientific study of past societies through artifacts, fossils, etc.
A field of study concerned with the principles and processes governing the geographic distributions of genealogical lineages, especially those within and among closely related species. (Avise, J.C., Phylogeography: The History and Formation of Species. Harvard University Press, 2000)
Global conflict involving countries of Europe, Africa, Asia, and North America that occurred between 1939 and 1945.
Individual members of Central American ethnic groups with ancient historic ancestral origins in Asia. Mexican Indians are not included.
Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation.
A species of orangutan, family HOMINIDAE, found in the forests on the island of Borneo.

Experimental infection of the cane mouse Zygodontomys brevicauda (family Muridae) with guanarito virus (Arenaviridae), the etiologic agent of Venezuelan hemorrhagic fever. (1/127)

Chronic infections in specific rodents appear to be crucial to the long-term persistence of arenaviruses in nature. The cane mouse, Zygodontomys brevicauda, is a natural host of Guanarito virus (family Arenaviridae), the etiologic agent of Venezuelan hemorrhagic fever. The purpose of this study was to elucidate the natural history of Guanarito virus infection in Z. brevicauda. Thirty-nine laboratory-reared cane mice each were inoculated subcutaneously with 3.0 log10 plaque-forming units of the Guanarito virus prototype strain INH-95551. No lethality was associated with infection in any animal, regardless of age at inoculation. The 13 newborn, 14 weanling, and 8 of the 12 adult animals developed chronic viremic infections characterized by persistent shedding of infectious virus in oropharyngeal secretions and urine. These findings indicate that Guanarito virus infection in Z. brevicauda can be chronic and thus support the concept that this rodent species is the natural reservoir of Guanarito virus.  (+info)

Guanarito virus (Arenaviridae) isolates from endemic and outlying localities in Venezuela: sequence comparisons among and within strains isolated from Venezuelan hemorrhagic fever patients and rodents. (2/127)

Despite intensive surveillance, Venezuelan hemorrhagic fever (VHF), caused by Guanarito (GTO) virus, has been detected in only a small region of western Venezuela. To determine whether VHF is associated with a particular regional GTO virus strain(s), 29 isolates from rodents and humans throughout the surrounding regions were analyzed by partial sequencing of the nucleocapsid protein gene. Phylogenetic trees delineated nine distinct GTO genotypes that differ by 4-17% in nucleotides and up to 9% in amino acid sequences; most appeared to be restricted to discrete geographic regions, although a few genotypes were isolated in several locations. Each genotype included at least one strain recovered from a rodent, but only two genotypes were isolated from VHF cases. The presence outside of the endemic/epidemic region of two genotypes isolated also from VHF cases suggests that human pathogenic viruses occur outside of the endemic zone, but do not frequently infect people and/or cause apparent disease there. VHF does not appear to be associated with a GTO virus genotype that is restricted to a certain rodent species. When quasispecies diversity was examined, rodent isolates had higher sequence variation than human isolates. One rodent isolate included a mixture of two phylogenetically distinct genotypes, suggesting a dual infection.  (+info)

Homologous and heterologous glycoproteins induce protection against Junin virus challenge in guinea pigs. (3/127)

Tacaribe virus (TACV) is an arenavirus that is genetically and antigenically closely related to Junin virus (JUNV), the aetiological agent of Argentine haemorrhagic fever (AHF). It is well established that TACV protects experimental animals fully against an otherwise lethal challenge with JUNV. To gain information on the nature of the antigens involved in cross-protection, recombinant vaccinia viruses were constructed that express the glycoprotein precursor (VV-GTac) or the nucleocapsid protein (VV-N) of TACV. TACV proteins expressed by vaccinia virus were indistinguishable from authentic virus proteins by gel electrophoresis. Guinea pigs inoculated with VV-GTac or VV-N elicited antibodies that immunoprecipitated authentic TACV proteins. Antibodies generated by VV-GTac neutralized TACV infectivity. Levels of antibodies after priming and boosting with recombinant vaccinia virus were comparable to those elicited in TACV infection. To evaluate the ability of recombinant vaccinia virus to protect against experimental AHF, guinea pigs were challenged with lethal doses of JUNV. Fifty per cent of the animals immunized with VV-GTac survived, whereas all animals inoculated with VV-N or vaccinia virus died. Having established that the heterologous glycoprotein protects against JUNV challenge, a recombinant vaccinia virus was constructed that expresses JUNV glycoprotein precursor (VV-GJun). The size and reactivity to monoclonal antibodies of the vaccinia virus-expressed and authentic JUNV glycoproteins were indistinguishable. Seventy-two per cent of the animals inoculated with two doses of VV-GJun survived lethal JUNV challenge. Protection with either VV-GJun or VV-GTac occurred in the presence of low or undetectable levels of neutralizing antibodies to JUNV.  (+info)

The Whitewater Arroyo virus: natural evidence for genetic recombination among Tacaribe serocomplex viruses (family Arenaviridae). (4/127)

The Tacaribe serocomplex (family Arenaviridae) comprises three phylogenetic lineages, designated A, B, and C. The sequence of a 3278-nt fragment of the small genomic segment of the Whitewater Arroyo (WWA) virus was determined to extend our knowledge on the phylogenetic relationship of this newly discovered North American Tacaribe complex virus to other arenaviruses. Independent analyses of full-length nucleoprotein (N) and glycoprotein precursor (GPC) amino acid sequences indicated that the WWA virus N and GPC genes are descended from a lineage A virus and lineage B virus, respectively. The different phylogenetic histories of the N and GPC genes indicate that the WWA virus genome is a product of recombination between two Tacaribe complex viruses.  (+info)

Pirital virus (Arenaviridae) infection in the syrian golden hamster, Mesocricetus auratus: a new animal model for arenaviral hemorrhagic fever. (5/127)

Adult Syrian golden hamsters inoculated intraperitoneally with Pirital virus, a recently discovered member of the Tacaribe complex of New World arenaviruses, developed a progressively severe, fatal illness with many of the pathologic features observed in fatal human cases of Lassa fever and other arenaviral hemorrhagic fevers. Most of the animals became moribund by Day 5 and were dead by Day 7 after inoculation. The most consistent histopathologic changes included interstitial pneumonitis, splenic lymphoid depletion and necrosis, and multifocal hepatic necrosis without significant inflammatory cell infiltration. The liver changes ranged from single cell death by apoptosis to coagulative necrosis of clusters of hepatocytes. Immunohistochemical studies of the liver demonstrated the presence and accumulation ot Pirital virus antigen within hepatocytes as well as Kupffer cells. An in situ terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) assay showed progressively increasing apoptotic activity in the liver of infected hamsters. A human hepatoblastoma cell line (Hep G2/C3A) inoculated with Pirital virus also developed progressive cell destruction and accumulation of viral antigen, as demonstrated by immunofluorescence. Results of this pilot study suggest that the Pirital virus-hamster model is a very promising new small animal model for studying the pathogenesis of arenavirus infections, particularly, the mechanism of direct virus-induced hepatic injury. It may also be useful for testingantiviral agents for treatment of arenaviral hemorrhagic fevers.  (+info)

Protection against simian immunodeficiency virus vaginal challenge by using Sabin poliovirus vectors. (6/127)

Here we provide the first report of protection against a vaginal challenge with a highly virulent simian immunodeficiency virus (SIV) by using a vaccine vector. New poliovirus vectors based on Sabin 1 and 2 vaccine strain viruses were constructed, and these vectors were used to generate a series of new viruses containing SIV gag, pol, env, nef, and tat in overlapping fragments. Two cocktails of 20 transgenic polioviruses (SabRV1-SIV and SabRV2-SIV) were inoculated into seven cynomolgus macaques. All monkeys produced substantial anti-SIV serum and mucosal antibody responses. SIV-specific cytotoxic T-lymphocyte responses were detected in three of seven monkeys after vaccination. All 7 vaccinated macaques, as well as 12 control macaques, were challenged vaginally with pathogenic SIVmac251. Strikingly, four of the seven vaccinated animals exhibited substantial protection against the vaginal SIV challenge. All 12 control monkeys became SIV positive. In two of the seven SabRV-SIV-vaccinated monkeys we found no virological evidence of infection following challenge, indicating that these two monkeys were completely protected. Two additional SabRV-SIV-vaccinated monkeys exhibited a pronounced reduction in postacute viremia to <10(3) copies/ml, suggesting that the vaccine elicited an effective cellular immune response. Three of six control animals developed clinical AIDS by 48 weeks postchallenge. In contrast, all seven vaccinated monkeys remained healthy as judged by all clinical parameters. These results demonstrate the efficacy of SabRV as a potential human vaccine vector, and they show that the use of a vaccine vector cocktail expressing an array of defined antigenic sequences can be an effective vaccination strategy in an outbred population.  (+info)

Transcription and RNA replication of tacaribe virus genome and antigenome analogs require N and L proteins: Z protein is an inhibitor of these processes. (7/127)

Tacaribe virus (TV), the prototype of the New World group of arenaviruses, comprises a single phylogenetic lineage together with four South American pathogenic producers of hemorrhagic disease. The TV genome consists of two single-stranded RNA segments called S and L. A reconstituted transcription-replication system based on plasmid-supplied TV-like RNAs and TV proteins was established. Plasmid expression was driven by T7 RNA polymerase supplied by a recombinant vaccinia virus. Plasmids were constructed to produce TV S segment analogs containing the negative-sense copy of chloramphenicol acetyltransferase (CAT) flanked at the 5' and 3' termini by sequences corresponding to those of the 5' and 3' noncoding regions of the S genome (minigenome) or the S antigenome (miniantigenome). In cells expressing N and L proteins, input minigenome or miniantigenome produced, respectively, encapsidated miniantigenome or minigenome which in turn produced progeny minigenome or progeny miniantigenome. Both minigenome and miniantigenome in the presence of N and L mediated transcription, which was analyzed as CAT expression. Coexpression of the small RING finger Z (p11) protein was highly inhibitory to both transcription and replication mediated by the minigenome or the miniantigenome. The effect depended on synthesis of Z protein rather than on plasmid or the RNA and was not ascribed to decreased amounts of plasmid-supplied template or proteins (N or L). N and L proteins were sufficient to support full-cycle RNA replication of a plasmid-supplied S genome analog in which CAT replaced the N gene. Replication of this RNA was also inhibited by Z expression.  (+info)

New World arenavirus clade C, but not clade A and B viruses, utilizes alpha-dystroglycan as its major receptor. (8/127)

Alpha-dystroglycan (alpha-DG) has been identified as a major receptor for lymphocytic choriomeningitis virus (LCMV) and Lassa virus, two Old World arenaviruses. The situation with New World arenaviruses is less clear: previous studies demonstrated that Oliveros virus also exhibited high-affinity binding to alpha-DG but that Guanarito virus did not. To extend these initial studies, several additional Old and New World arenaviruses were screened for entry into mouse embryonic stem cells possessing or lacking alpha-DG. In addition, representative viruses were further analyzed for direct binding to alpha-DG by means of a virus overlay protein blot assay technique. These studies indicate that Old World arenaviruses use alpha-DG as a major receptor, whereas, of the New World arenaviruses, only clade C viruses (i.e., Oliveros and Latino viruses) use alpha-DG as a major receptor. New World clade A and B arenaviruses, which include the highly pathogenic Machupo, Guanarito, Junin, and Sabia viruses, appear to use a different receptor or coreceptor for binding. Previous studies with LCMV have suggested the need for a small aliphatic amino acid at LCMV GP1 glycoprotein amino acid position 260 to allow high-affinity binding to alpha-DG. As reported herein, this requirement appears to be broadly applicable to the arenaviruses as determined by more extensive analysis of alpha-DG receptor usage and GP1 sequences of Old and New World arenaviruses. In addition, GP1 amino acid position 259 also appears to be important, since all arenaviruses showing high-affinity alpha-DG binding possess a bulky aromatic amino acid (tyrosine or phenylalanine) at this position.  (+info)

Looking for Guanarito virus? Find out information about Guanarito virus. parasite with a noncellular structure composed mainly of nucleic acid nucleic acid, any of a group of organic substances found in the chromosomes of living... Explanation of Guanarito virus
Neighbor-joining phylogenetic tree of Machupo virus derived from the glycoprotein precursor gene sequence. The neighbor-joining and maximum likelihood analyses
The superfamily Certhioidea is distributed on four continents and while comprising relatively few species, includes forms as diverse as creepers, nuthatches, gnatcatchers, and wrens. Previous attempts to infer the phylogeny of this lineage have focused on its higher-level relationships, consequently undersampling the New World wrens. This study reports the first nearly genus-level sampling of certhioids, based on concatenated and species tree analyses of 8520 bases of DNA sequence data from six gene regions. These analyses, while failing to completely resolve basal certhioid relationships, corroborate the monophyly of a diverse New World clade of gnatcatchers, gnatwrens, and wrens, and significantly improve our understanding of wren relationships. The inferred relationships among certhioids and wrens support an Old World origin for these lineages, with dispersal of the New World clade in the mid-Miocene, suggesting expansion and early diversification of the lineage through North America. This ...
Nucleic Acid: Plasmid for expression of the LCMV S-segment with heterologous arenavirus GP - Machupo (Expression plasmid, Diagnostic reagent, Derived product, Nucleic Acid, Cloned nucleic acid)
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A host of disease-causing viruses called arenaviruses lurk in animal populations in various parts of the world, sometimes crossing over into humans. When they do cross over, they can be lethal, and few treatments exist.. Now researchers at the Weizmann Institute of Science have devised a clever decoy for these viruses that may keep them from spreading in the body.. Two disease-causing arenaviruses, known as Junín and Machupo, circulate through rodent populations, mainly in South America, and they can infect humans when people come in contact with affected rodents. Similar to Ebola, these diseases can cause the body to bleed out, and the only treatments, to date, are risky and complex, as they are taken from the blood of survivors.. The study, reported in Nature Communications, arose from an earlier research question in the group of Dr Ron Diskin of the Weizmann Institutes Structural Biology Department: how are certain arenaviruses able to move from rodents or other animals into ...
...Researchers report discovering the receptor through which a group of l...The four viruses known as the Machupo Guanarito Junin and Sabia vir...The researchers led by Hyeryun Choe PhD of Childrens Hospital Bost...The receptor identified in Choes lab by Jonathan Abraham PhD an MD...,Discovery,could,lead,to,better,control,of,hemorrhagic,fever,viruses,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
People who comply with the Paleo weight-reduction plan often accomplish that for health motives, eschewing many carbs, especially grains, in prefer of lean
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Several viruses in the Arenaviridae family infect humans and cause severe hemorrhagic fevers which lead to high case fatality rates. Due to their pathogenicity and geographic tropisms, these viruses remain very understudied. As a result, an effective vaccine or therapy is urgently needed. Here, we describe efforts to produce cross-reactive monoclonal antibodies that bind to both New and Old World arenaviruses. All of our MAbs seem to be nonneutralizing and nonprotective and target subunit 2 of the glycoprotein. Due to the lack of reagents such as recombinant glycoproteins and antibodies for rapid detection assays, our MAbs could be beneficial as analytic and diagnostic tools.
Arenaviruses are enveloped, bipartite negative single-stranded RNA viruses that can cause a wide spectrum of disease in humans and experimental animals including hemorrhagic fever. The majority of these viruses are rodent-borne and the arenavirus family can be divided into two groups: the Lassa-Lymphocytic choriomeningitis serocomplex and the Tacaribe serocomplex. Arenavirus-induced disease may include characteristic symptoms ranging from fever, malaise, body aches, petechiae, dehydration, hemorrhage, organ failure, shock, and in severe cases death. Currently, there are few prophylactic and therapeutic treatments available for arenavirus-induced symptoms. Supportive care and ribavirin remain the predominant strategies for treating most of the arenavirus-induced diseases. Therefore, efficacy testing of novel therapeutic and prophylactic strategies in relevant animal models is necessary. Because of the potential for person-to-person spread, the ability to cause lethal or debilitating disease in humans,
PubMed Central Canada (PMC Canada) provides free access to a stable and permanent online digital archive of full-text, peer-reviewed health and life sciences research publications. It builds on PubMed Central (PMC), the U.S. National Institutes of Health (NIH) free digital archive of biomedical and life sciences journal literature and is a member of the broader PMC International (PMCI) network of e-repositories.
FBI will investigate the Texas biolab where a deadly virus went missing, according to the Centers for Disease Control and Prevention.
Adverse effect in those methods for small-scale preparation liquid parafn with polyethyl- akes; these akes are constructed from kits containing a solution (see sect. Cone into a liquid is the compounds double bond of the problem in the community. Alcohol as a white, water-soluble, crystalline substance. Structures of these approaches to pain and increased tolerance to thyroid hormone activates adenylatc cyclase in renal elimination. Hyoscyamine sulfate thartic preparations. Nafcillin treatment of acute is a selective substrate (probe) for this trial. 19:10)25. All caveats mentioned (racemate of beta-blocker and nitrate dosages, and ven- ous treatment with atrial fibrillation/ atrial flutter classification of pharmacists, with training being made in the ers/isam task force on the user. Machupo viruses i(emorrhugic none none lymplionu papovccvinca tcpilltrmasirus \varts nitric podophyltin polyrmasirus (ic vicrist pargeessive leukoetceeplicrlopathy none adeciovinis human adenovinas upper ...
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Scandal ridden former councilmember Ed Arnold stepped down to allow the Arroyo Grande City Council to avoid distraction related to his personal life, and at his replacements first council meeting, questions about her lifestyle started a confrontation between her supporters and her critics. Public comment about recently appointed Arroyo Grande Councilwoman Karen Rays, activities with the SLO Hash House Harriers brought a moment of stunned silence to tonights City Council meeting.
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I wrote a couple of months ago about the burgeoning Arroyo Food Co-Op. It would be a locally owned and operated operation combining the best of the local-foods movement, the slow-food movement, the fun and tasty farmers markets that are so popular in so many of our cities, Jones Coffee and Europane, Trader Joes and Whole Foods. Then I sort of forgot about it. But running on an Upper Arroyo trail the other morning, Pasadenan Mia Dunn dashed downhill past me, made some remarks about what a good-looking dog I was out with - complimenting Charlie is always a good way to get to me - and said that the Co-Op is going great guns. Its still early days for the homegrown community market that would serve the Pasadena area. Theres no bricks and mortar up yet in which to shop for heirloom nectarines. But a board of directors has been elected, and Patrick Reagan was elected chair of that. The board is having a meeting Thursday night - tomorrow - at 7 p.m. at 33 S. Catalina Ave., No. 104, Pasadena, and ...
This is a modern, higher quality reproduction of the Vietnam War-era MACV/CISO-SOG Recon knife by internationally known Forge Master K. Ali. This knife is one of 3 prototypes for Modell Design LLC. Knife Type: CombatBlade Style: BowieBlade Length: Approx 7 1/8 inchesTotal Length: Approx 12 inches Weight: 9.5 oz B
The Center for One Health Research Department of Environment & Occupational Health Sciences School of Public Health University of Washington Box 357234 Seattle, WA, USA ...
President Rodrigo Duterte said he was considering naming former president and Pampanga Rep. Gloria Arroyo to a body that will propose changes to the 1987 Constitution.
USGS National Water Census Water Budget Data Resources for the Sand Arroyo - HUC 11040004 (Turn off compatibility view settings in IE if having problems viewing this site) ...
This 1 light Post Mount from the Berkeley collection by Arroyo Craftsman will enhance your home with a perfect mix of form and function. The features include a Mission Brown finish applied by experts. This item qualifies for free shipping! Check the right-hand bar or call our dedicated Sales Team for similar items and additional options not pictured.
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That said, Arroyo was a sensational apprentice at Suffolk Downs and went on to great success on the NYRA circuit before his issues began to catch up with him. He was from Somerville, Mass., a suburb of Boston. I recall sitting in the simulcast area at Suffolk one weekend and getting into a conversation with a man who told me he knew Arroyo quite well -- he was the assistant principal (or some similar title) at Somerville High School when Arroyo was a student there. He spent a lot of time in my office, he told me. Anyone familiar with the traditional duties of an assistant principal knows what that means ...
NOTICE 09-08-2020: The NWIS Mapper is experiencing intermittent issues. Developers are looking into the problem. Thank you for your patience. ...
Epitope curation should be conducted in the following priority order: A) NIAID Category A, B, and C priority pathogens and toxins: The complete list of NIAID Category A, B, and C priority pathogens and toxins can be found at the following URL: http://www2.niaid.nih.gov/biodefense/bandc_priority.htm. NIAID - Category A Bacillus anthracis (anthrax) Clostridium botulinum Yersinia pestis Variola major (smallpox) and other pox viruses Francisella tularensis (tularemia) Viral hemorrhagic fevers Arenaviruses LCM, Junin virus, Machupo virus, Guanarito virus Lassa Fever Bunyaviruses Hantaviruses Rift Valley Fever Flaviruses Dengue Filoviruses Ebola Marburg NIAID - Category B Burkholderia pseudomallei Coxiella burnetii (Q fever) Brucella species (brucellosis) Burkholderia mallei (glanders) Ricin toxin (from Ricinus communis) Epsilon toxin of Clostridium perfringens Staphylococcus enterotoxin B Typhus fever (Rickettsia prowazekii) Food and Waterborne Pathogens Bacteria Diarrheagenic E.coli Pathogenic ...
Taken together, the viruses that cause VHFs are distributed over much of the globe. However, because each virus is associated with one or more particular host species, the virus and the disease it causes are usually seen only where the host species live(s). Some hosts, such as the rodent species carrying several of the New World arenaviruses, live in geographically restricted areas. Therefore, the risk of getting VHFs caused by these viruses is restricted to those areas. Other hosts range over continents, such as the rodents that carry viruses which cause various forms of hantavirus pulmonary syndrome (HPS) in North and South America, or the different set of rodents that carry viruses which cause haemorrhagic fever with renal syndrome (HFRS) in Europe and Asia. A few hosts are distributed nearly worldwide, such as the common rat. It can carry Seoul virus, a cause of HFRS; therefore, humans can get HFRS anywhere where the common rat is found.. While people usually become infected only in areas ...
Semantic Scholar extracted view of Ribonucleoprotein complexes associated with virions of Pichinde virus and Pichinde virus-infected cells by P. R. G. Young et al.
Argentine hemorrhagic fever (AHF) was recognized as a new clinical entity from the richest farming region of Argentina in the 1950s (Arribalzaga 1955). The etiologic agent of this disease, Junin virus
These Pathogen Safety Data Sheets, regulated under Workplace Hazardous Materials Information System (WHMIS) legislation, are produced for personnel working in the life sciences as quick safety reference material relating to infectious micro-organisms.
Los síndromes infecciosos asociados a arenavirus en América del sur son cuatro: síndrome febril de origen viral; fiebres hemorrágicas con o sin compromiso neurológico; meningitis asépticas y meningo-encefalitis. Entre los Arenavirus del nuevo mundo, está el complejo Tacaribe donde se encuentran los virus: Junín (Argentina), Guanarito (Venezuela), Machupo (Bolivia) y Sabiá (Brasil), que se caracterizan por causar fiebres hemorrágicas. En Colombia fue aislado el arenavirus Pichindé en 1965, del roedor Oryzomys albigularis, en el valle de Pichindé (Valle del Cauca). Este arenavirus produce una infección persistente en su hospedero y no es patógeno para el hombre. Hay evidencias de la circulación del virus Guanarito en roedores de Córdoba, pero no existen casos diagnosticados en humanos; en Sincelejo (Colombia) se detectó el genoma del virus coriomeningitis linfocítica en cerebros de roedores Mus musculus. El diagnóstico se basa en el conocimiento de la epidemiología local y la sospecha
BACKGROUND INFORMATION ABOUT CONVALESCENT PLASMA: Passive immunity has proven effective for cytomegalovirus (CMV), hepatitis B virus, rabies, tetanus, varicella, certain SARS variants, Argentine Hemorrhagic Fever, and various other illnesses. Convalescent plasma has been cited as a potential therapy for viral infection dating back to the 1918 Spanish influenza A (H1N1) pandemic. Since that time, convalescent plasma as passive immune therapy has been evaluated in the treatment of: Ebola, SARS coronavirus (SARS-CoV), 2009 pandemic influenza A (H1N1), Argentine Hemorrhagic Fever, CMV, Parvovirus B19, and others. Furthermore, a February 2020 WHO report states The cellular infectivity of the isolated viruses could be completely neutralized by the sera collected from convalescent patients. [Source: https://www.who.int/docs/default-source/coronaviruse/who-china-joint-mission-on-covid-19-final-report.pdf ] ABOUT CERUS Cerus Corporation is dedicated solely to safeguarding the worlds blood supply and ...
Junin virus buds at CD9-enriched sites. JUNV-A647 viral particles stained with either a CD9 antibody conjugated to PE (a) or Cholera Toxin B (CTB) conjugated to
American Whitewater is the primary advocate for the preservation and protection of whitewater rivers throughout the United States and connects the interests of human-powered recreational river users with ecological and science-based data to achieve goals within our mission.
American Whitewater is the primary advocate for the preservation and protection of whitewater rivers throughout the United States and connects the interests of human-powered recreational river users with ecological and science-based data to achieve goals within our mission.
Many families take vacations to areas where tour guides lazily prompt visitors through boring points of interest. On a whitewater excursion, a guide is an active member of a raft who helps each person paddle their way through a series of challenging natural obstacles.. A whitewater tour guide brings any family face-to-face with the roaring power of natures most imposing force. River rapids challenge anyone in a raft to race down natures highways. With the help of an experienced river guide, any family can experience a vivid ride through areas that are never seen by people taking normal vacations.. On a whitewater vacation, families can become part of interesting terrains, see amazing wildlife, and test their physical skills. The range of river choices is endless for people wanting to experience a whitewater adventure. Class I and II whitewater areas offer places to break new visitors into life on the water. Class III and IV streams present wild dangers and obstacles. Class V whitewater streams ...
Participate in a whitewater trip using either a canoe or kayak on a Class I or Class II river. Help to prepare a written plan, specifying the route, schedule, equipment, safety precautions, and emergency procedures. Determine local rules and obtain permission from landowners and land managers in advance. Explain what steps you have taken to comply with BSA Safety Afloat and the American Whitewater safety guidelines. Execute the plan with others ...
Participate in a whitewater trip using either a canoe or kayak on a Class I or Class II river. Help to prepare a written plan, specifying the route, schedule, equipment, safety precautions, and emergency procedures. Determine local rules and obtain permission from landowners and land managers in advance. Explain what steps you have taken to comply with BSA Safety Afloat and the American Whitewater safety guidelines. Execute the plan with others ...
Boid inclusion body disease (BIBD) is a viral disease of boid snakes believed to be caused by reptarenavirus belonging to the family Arenaviridae. Unlike most mammalian arenaviruses, the reservoir host for reptarenavirus is still unknown. In this study, the pathological responses were evaluated in a mouse model for a period of 28 days. Blood and tissue samples (lung, liver, spleen, heart, kidney and brain) were collected for evaluation of hematology, biochemistry, histopathology and oxidative enzyme levels at six time points (1, 3, 7, 14, 21 and 28 days), after viral infection (2 ...
Dusky-footed woodrat: | | | | Dusky-footed woodrat | | | ... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled.
A Ohio woman who went whitewater rafting in North Carolina has died of an infection after being exposed to an amoeba that is naturally present in warm, fresh water.
Everything you need to know-detailed itinerary, packing list, pre- & post-trip lodging, and more-for California Whitewater Guide School with OARS.
Go rafting on your vacation! Experience the thrill of a lifetime on our whitewater rafting tours. If you are looking for excitement take our rafting trips th...
Go rafting on your vacation! Experience the thrill of a lifetime on our whitewater rafting tours. If you are looking for excitement take our rafting trips th...
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Patricia Ann Webb (1925-2005) left a rich legacy of work undertaken during a time when arbovirus and hemorrhagic fever virus studies were coming of age. She participated in the discovery and characterization of some of the most consequential infectious diseases of today. She had a role in the classification of the arenaviruses, including Machupo and Lassa viruses. She identified, by immunofluorescence, that Ebola virus was a new pathogen in 1976. She demonstrated that AIDS was unlikely to be transmitted by mosquitos or bed bugs. Patricia was a part of a legendary group of physicians, veterinarians, epidemiologists, microbiologists, entomologists, and ecologists whose findings and stories have inspired new generations of scientists. How they elucidated disease transmission, treatment, and control serves as the best examples of studies on emerging zoonotic diseases. Those who signed up had to have a yen for adventure, and Patricia thrived in exotic places. Colleagues fondly remember her as smart, sharp
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When Eddie Arroyo was an 18-year-old working in a gas station at the corner of Fifth Avenue and Jackson Boulevard, some of his customers who frequented the racetrack suggested that he think about
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MANILA, Philippines-Former President and now Pampanga Representative Gloria Macapagal-Arroyo went to the Makati Medical Center (MMC) Thursday afternoon to undergo a digital mammogram.. Arroyo left the Veterans Memorial Medical Center (VMMC), where she is under hospital detention for plunder, around noon and arrived at the Makati hospital at 1 p.m. in a wheelchair and wearing a neck brace ...
Currently there are relatively few antiviral therapeutics, and most which do exist are highly pathogen-specific or have other disadvantages. We have developed a new broad-spectrum antiviral approach, dubbed Double-stranded RNA (dsRNA) Activated Caspase Oligomerizer (DRACO) that selectively induces apoptosis in cells containing viral dsRNA, rapidly killing infected cells without harming uninfected cells. We have created DRACOs and shown that they are nontoxic in 11 mammalian cell types and effective against 15 different viruses, including dengue flavivirus, Amapari and Tacaribe arenaviruses, Guama bunyavirus, and H1N1 influenza. We have also demonstrated that DRACOs can rescue mice challenged with H1N1 influenza. DRACOs have the potential to be effective therapeutics or prophylactics for numerous clinical and priority viruses, due to the broad-spectrum sensitivity of the dsRNA detection domain, the potent activity of the apoptosis induction domain, and the novel direct linkage between the two which
Missing Vial of Dangerous Virus Highlights Security Problems at U.S. Labs. WS - Theyre are No numbers available for Corporations that are fuc$ing with deadly viruses. With the US taxpayer funding research for private corporations at Colleges and Universities, plausible deniability, will shield the corporations should diseases of mass destruction get released, by espionage, accident or human testing. - Just sayin.. Lets start with the good news: The vial of Guanarito, a rare disease found only in Venezuelan rodents, that was reported missing from a Texas lab on Wednesday is probably nothing to worry about. First of all, theres no evidence that Guanarito can be transmitted from person to person-only from rodent to person (though when that happens, primarily to male agricultural workers, it isnt pleasant). Nor does it appear that the vial was spirited away by an evildoer-more likely, itl was destroyed after accidentally falling to the floor, Galveston National Laboratory scientific ...
It is a member of Clade A of the Tacaribe (or "New World") serocomplex of the family Arenaviridae. Laboratory workers infected ... Zuckerman 2014, p. 10 "Viral Hemorrhagic Fevers Caused by Arenaviruses" (PDF). The Center for Food Security and Public Health. ... Zuckerman, Ben (2014). Howard, C R (ed.). Arenaviruses. Elsevier. p. 7. ISBN 9780080877372. ... an arenavirus with a mammalian host. It was first found in semiaquatic rodents of the genus Oryzomys in tropical forest in the ...
... all three being New World arenaviruses. The virus is named after Bear Canyon, the area it was originally discovered in. Cajimat ... An Arenavirus Naturally Associated with the California Mouse (Peromyscus californicus)". Emerging Infectious Diseases. 8 (7): ... "Principal host relationships and evolutionary history of the North American arenaviruses". Virology. 367 (2): 235-243. doi: ...
"Phylogeny and evolution of old world arenaviruses". Virology. 350 (2): 251-7. doi:10.1016/j.virol.2006.01.026. PMID 16494913. ... Gonzalez JP, Sanchez A, Rico-Hesse R (July 1995). "Molecular phylogeny of Guanarito virus, an emerging arenavirus affecting ... "One Health Initiative - One World One Medicine One Health". www.onehealthinitiative.com. Retrieved 2018-06-29. Ezama A, ... Arenavirus, Hantavirus, Crimean Congo Hemorrhagic virus and others. In the late 90s he began working as a professor of ...
... the Old World arenaviruses, and the New World arenaviruses. Old World arenaviruses include lymphocytic choriomeningitis virus ... New world arena viruses are further broken down into three clades, A, B, and C. The Guanarito arena virus belongs to clade B ... February 2008). "Receptor determinants of zoonotic transmission of New World hemorrhagic fever arenaviruses". Proc. Natl. Acad ... Arenaviruses causing hemorrhagic fevers, along with a genus of virus called filoviruses, were categorized in Category A; these ...
Alpha-dystroglycan is also used as a receptor by viruses of the New World clade C arenaviruses (Oliveros and Latino viruses). ... The life cycle of Lassa mammarenavirus is similar to the Old World arenaviruses. Lassa mammarenavirus enters the cell by the ... It shares this receptor with the prototypic Old World arenavirus lymphocytic choriomeningitis virus. Receptor recognition ... the New World arenaviruses of clades A and B, which include the important viruses Machupo, Guanarito, Junin, and Sabia in ...
Picornaviruses have been identified from a diverse array of bat species around the world. Arenaviruses are mainly associated ... The first arenavirus identified in bats was Tacaribe mammarenavirus, which was isolated from Jamaican fruit bats and the great ... The hepadnovirus found in the tent-making bat, which is a New World species, was the closest relative of human hepadnoviruses. ... "Ebola virus disease". World Health Organization. 10 February 2020. Retrieved 13 April 2020. "What is Ebola Virus Disease?". ...
"Fatal Illnesses Associated With a New World Arenavirus --- California, 1999--2000". MMWR Weekly. Fulhorst, Charles; Charrel, ... Arenavirus-specific RNA was detected in each patient using RT-PCR. The nucleotide sequence of the patients were essentially ... Like other arenaviruses, WWAV appears to be transmitted through rodents. Therefore, direct contact with rodents, their feces, ... in the family Arenaviridae change the name of genus Arenavirus to Mammarenavirus and convert the names of its constituent ...
They suggested that scholars consider "New World arenaviruses" and the role these pathogens may have played in colonial disease ... animals imported from the Old World were potentially disease vectors for illnesses of New and Old World origins.[citation ... However, the symptoms of cocoliztli were still not identical to the typhus, or spotted fever, observed in the Old World at that ... Given that many of the Old World pathogens being considered as responsible for the cocoliztli outbreak, it is significant that ...
Specifically it is an old world arenavirus, which is enveloped, single-stranded, and bi-segmented RNA. This virus has both a ... World Health Organization. Archived from the original on 5 June 2015. Retrieved 26 May 2015. Dongo, A. E.; Kesieme, E. B.; ... "Lassa fever". World Health Organization. Retrieved 11 September 2017. McCormick, J. B.; King, I. J.; Webb, P. A.; Scribner, C. ... "Lassa Fever - Nigeria". World Health Organization. 1 March 2018. Edward-Ekpu, Uwagbale. "Nigeria is already dealing with a ...
Sequencing of the viral genome has shown that this virus belongs to the Old World arenavirus group. Comparisons with other ... viral genome sequences showed that this virus is equidistant from other Old World and New World arenaviruses. It is distantly ... identified the etiological agent of the outbreak as an Old World arenavirus using molecular and serological tests. Sequencing ... "Discovery of new arenavirus associated with hemorrhagic fever - first identified in nearly four decades". News-Medical.net. ...
As receptors for phosphatidylserine, TIM proteins bind many families of viruses [filovirus, flavivirus, New World arenavirus ...
... arenavirus MeSH B04.820.057.070.100 - arenaviruses, old world MeSH B04.820.057.070.100.500 - lassa virus MeSH B04.820.057.070. ... arenavirus MeSH B04.909.777.080.070.100 - arenaviruses, old world MeSH B04.909.777.080.070.100.500 - lassa virus MeSH B04.909. ... 100.550 - lymphocytic choriomeningitis virus MeSH B04.820.057.070.800 - arenaviruses, new world MeSH B04.820.057.070.800.450 - ... 777.080.070.100.550 - lymphocytic choriomeningitis virus MeSH B04.909.777.080.070.800 - arenaviruses, new world MeSH B04.909. ...
... fever on the developing world Monoclonal antibodies to lymphocytic choriomeningitis virus react with pathogenic arenaviruses ... Johnson, K. M.; Taylor, P.; Tomori, O.; Elliott, L. H. (1981-11-01). "Recovery of a Lassa-Related Arenavirus in Zimbabwe". The ... He served as the Regional Virologist for the World Health Organization Africa Region (1994-2004) before he was appointed as the ... CS1 maint: discouraged parameter (link) "What can Nigeria's Ebola experience teach the world?". The Guardian. October 7, 2014. ...
The Maiztegui National Human Viral Disease Institute has performed research for the World Health Organization since 1985 and ... currently specializes in four areas: Arenaviruses Arboviruses Hantavirus Production of biological specimens ANLIS (in Spanish) ...
He is a member of the World Health Organization Collaborating Center for Tropical Diseases. He is also director for biodefense ... His arenavirus research concentrates on the effects of infection on cellular function, particularly those molecular ... Peters, C. J. and Mark Olshaker (1998), Virus Hunter: Thirty Years of Battling Hot Viruses Around the World, Random House. ... of viral diseases including more than 70 publications on Rift Valley fever virus and more than 60 publications on arenaviruses ...
In July 2019, the World Health Organization declared the Congo Ebola outbreak a world health emergency. The length of time ... arenaviruses, and flaviviruses" (PDF). Ministry of Health and Long-Term Care. Archived (PDF) from the original on 15 October ... Health topics: Ebola virus disease - World Health Organization. Videos: Ebola outbreak response - World Health Organization. " ... Urging the world to offer aid to the affected regions, its Director-General said, "Countries affected to date simply do not ...
The life cycle of Lassa virus is similar to the Old World arenaviruses. Lassa virus enters the cell by the receptor-mediated ... It shares this receptor with the prototypic Old World arenavirus lymphocytic choriomeningitis virus. Receptor recognition ... the New World arenaviruses of clades A and B, which include the important viruses Machupo, Guanarito, Junin, and Sabia in ... a b Donaldson, Ross I. (2009). The Lassa Ward:One Man's Fight Against One of the World's Deadliest Diseases. St. Martin's Press ...
Guanarito virus New World arenavirus - Junin virus New World arenavirus - Machupo virus New World arenavirus - Sabia virus ... hemorrhagic fever Crimean-Congo hemorrhagic fever virus Ebola virus Lassa virus Lujo virus Marburg virus New World arenavirus ...
"Viral Haemorrhagic Fevers". World Health Organization (WHO). United Nations (UN). "Viral Hemorrhagic Fevers (VHFs) Virus ... Prophylactic (preventive) ribavirin may be effective for some bunyavirus and arenavirus infections (available only as an ... 2004). Return of the Black Death: The World's Greatest Serial Killer West Sussex; John Wiley and Sons. ISBN 0-470-09000-6. ... and HFRS due to Old World Hantavirus infection) and can be used only under an experimental protocol as IND approved by the U.S ...
The New World and Old World species diverged less than 45,000 years ago. The New World species evolved between 41,400 and 3,300 ... virus is the only arenavirus to exist in both areas but is classified as an Old World virus. Old and New World area viruses ... termini of the virion RNA species of New World and Old World arenaviruses". Virology. 121 (1): 200-3. doi:10.1016/0042-6822(82) ... The Old World species evolved between 23,100 and 1,880 years ago, most likely in southern Africa. Some arenaviruses are ...
Plasmacytoid dendritic cells are productively infected and activated through TLR-7 early after arenavirus infection. Cell Host ... featuring the top immunologists from around the world. In order to make the talks available longitudinally, the recorded talks ... DDX3 suppresses type I interferons and favors viral replication during Arenavirus infection. PLoS Pathog. 2018 Jul 12;14(7): ... "Plasmacytoid dendritic cells are productively infected and activated through TLR-7 early after arenavirus infection". Cell Host ...
"A brief history of vaccines and how they changed the world". World Economic Forum. Retrieved 2020-04-30. "Creating a world in ... category A arenavirus) Chlamydia psittaci (category B) Naegleria fowleri (category B) Balamuthia mandrillaris (category B) St. ... CEPI promotes the idea that a proactive approach is required to "create a world in which epidemics are no longer a threat to ... In 2014, the Western African Ebola virus epidemic demonstrated how ill-prepared the world was to handle such an epidemic. In ...
The mortality rate varies significantly depending on the form, being up to 50% in New World hantaviruses (the Americas), up to ... With the exception of Hantaviruses and Arenaviruses, all viruses in the Bunyavirales order are transmitted by arthropods ( ... 15% in Old World hantaviruses (Asia and Europe), and as little as 0.1% in Puumala virus (mostly Scandinavia). The antibody ...
Then He Watched The World Forget". HuffPost. Retrieved 5 November 2019.. *^ Piot P, Marshall R (2012). No time to lose: a life ... arenaviruses, and flaviviruses" (PDF). Ministry of Health and Long-Term Care. Archived (PDF) from the original on 15 October ... Ebola virus disease (Report). World Health Organization. Retrieved 6 June 2019.. *^ a b "CDC urges all US residents to avoid ... "World Health Organization (WHO). Retrieved 14 May 2018.. *^ Yong E (21 May 2018). "Most Maps of the New Ebola Outbreak Are ...
It has particular importance to farmers in certain regions of the world where it infects cattle. This is because its clinical ... "Properties of replication-competent vesicular stomatitis virus vectors expressing glycoproteins of filoviruses and arenaviruses ... Disease card on World Organisation for Animal Health. ...
The island of Vir in Croatia is one of the biggest described endemic places of origin of LCMV in the world, with IFA testing ... The first arenavirus, Lymphocytic choriomeningitis mammarenavirus (LCMV), was isolated in 1933 by Charles Armstrong during a ... World Health Organ. 55 (5): 599-603. PMC 2366689. PMID 338190. ICTVdB-The Universal Virus Database, version 4. [2] Centers for ... LCMV has been shown to cause illness in New World primates such as macaques, marmosets and tamarins. Infections have also been ...
Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: ... "Principal host relationships and evolutionary history of the North American arenaviruses". Virology. 367 (2): 235-243. doi: ...
The arenaviruses have a somewhat reduced case-fatality rate compared to disease caused by filoviruses, but are more widely ... Bisher, Jamie, "During World War I, Terrorists Schemed to Use Anthrax in the Cause of Finnish Independence," Military History, ... In 1980, the World Health Organization (WHO) announced the eradication of smallpox, a highly contagious and incurable disease. ... Bio terrorism is used to threaten people, governments and countries By the time World War I began, attempts to use anthrax were ...
Prevalence of antibodies to arenaviruses in rodents from the southern and western United States: evidence for an arenavirus ... eds.). Orders and families of Recent mammals of the world. John Wiley and Sons, New York, 686 pp. Carleton, M.D. and Musser, G. ... An arenavirus normally associated with woodrats (Neotoma) has also been found in Florida marsh rice rats. Antibodies against ... 894-1531 in Wilson, D.E. and Reeder, D.M. (eds.). Mammal Species of the World: a taxonomic and geographic reference. 3rd ed. ...
Arenavirus: Guanarito virus,[2] Junín virus,[2] Lassa fever virus,[2] Lujo virus,[3] Machupo virus[2] ve Sabiá virus[2] ... "World J. Gastroenterol. 16 (6), s. 698-702. PMC 2817057 $2. PMID 20135717.. KB1 bakım: Birden fazla ad: yazar listesi (link) ... "World J Hepatol. 3 (4), s. 83-92. doi:10.4254/wjh.v3.i4.83. PMC 3098392 $2. PMID 21603030.. ... "Genetic detection and characterization of Lujo virus, a new hemorrhagic fever-associated arenavirus from southern Africa" ...
World Health Organization. World Health Organization. August 2014. Archived (PDF) from the original on 21 August 2014. ... arenaviruses, and flaviviruses" (PDF). Ministry of Health and Long-Term Care. Archived (PDF) from the original on 15 October ... WHO: Ebola haemorrhagic fever - World Health Organization, Global Alert and Response. *[1] - World Health Organization, Fact ... World Health Organization. Archived from the original on 29 July 2014.. *^ a b c "Monitoring Symptoms and Controlling Movement ...
World Health Organization. Archived from the original on 3 December 2013. Retrieved 2 April 2013.. ... Louis encephalitis, West Nile encephalitis virus), bunyavirus (La Crosse strain), arenavirus (lymphocytic choriomeningitis ... World Health Organization. Archived from the original on 3 December 2013. Retrieved 2 April 2013.. ...
World Health Organisation report, 24 September 2014. *^ Einstein MH, Schiller JT, Viscidi RP, Strickler HD, Coursaget P, Tan T ... Examples include geminiviruses, which are ssDNA plant viruses and arenaviruses, which are ssRNA viruses of animals.[94] ... The ancient Virus World and evolution of cells. Biology Direct. 2006;1:29. doi:10.1186/1745-6150-1-29. PMID 16984643. ... The evidence for an ancestral world of RNA cells[61] and computer analysis of viral and host DNA sequences are giving a better ...
Biohazard: The Chilling True Story of the Largest Covert Biological Weapons Program in the World-Told from Inside by the Man ... "Properties of Replication-Competent Vesicular Stomatitis Virus Vectors Expressing Glycoproteins of Filoviruses and Arenaviruses ... Garrett, Laurie (1994). The Coming Plague: Newly Emerging Diseases in a World Out of Balance. New York, USA: Farrar, Straus & ... Marburgviruses are World Health Organization Risk Group 4 Pathogens, requiring Biosafety Level 4-equivalent containment,[51] ...
Walt Disney World), multi-purpose arena at Walt Disney World in Florida Arena (1953 film), a 3-D Western starring Gig Young The ... California Arenavirus Arenas (disambiguation) Larena (disambiguation) This disambiguation page lists articles associated with ...
There are only two centres in the world authorised by the WHO to keep stocks of smallpox virus: the State Research Center of ... Examples include geminiviruses, which are ssDNA plant viruses and arenaviruses, which are ssRNA viruses of animals. Genome size ... Singapore: World Scientific Publishing Co. Bibcode:1993nlp..book.....F. In 1887, Buist visualised one of the largest, Vaccinia ... The evidence for an ancestral world of RNA cells and computer analysis of viral and host DNA sequences are giving a better ...
This isolation strongly suggests that Old World fruit bats are involved in the natural maintenance of marburgviruses and that ... "Properties of Replication-Competent Vesicular Stomatitis Virus Vectors Expressing Glycoproteins of Filoviruses and Arenaviruses ... Marburgviruses are World Health Organization Risk Group 4 Pathogens, requiring Biosafety Level 4-equivalent containment, ... In early 2005, the World Health Organization (WHO) began investigating an outbreak of viral hemorrhagic fever in Angola, which ...
World Health Organization (2020). Therapeutics and COVID-19: living guideline, 20 November 2020. World Health Organization (WHO ... and one which covered both arenaviruses and coronaviruses. In October 2015, the United States Army Medical Research Institute ... Boseley S (30 June 2020). "US buys up world stock of key Covid-19 drug". The Guardian. Baragona S (29 June 2020). "US Procures ... In November 2020, the World Health Organization (WHO) updated its guideline on therapeutics for COVID-19 to include a ...
This occurs primarily in third world countries. Strict personal hygiene and the avoidance of raw and unpeeled foods can help ... Other viruses than can cause hepatitis include: Adenoviruses Arenaviruses: Guanarito virus, Junín virus, Lassa fever virus, ...
Old World Arenaviruses. Virus, date isolated. Natural host. Geographic distribution. Naturally occurring human disease. Human ... New World Arenaviruses. Virus, date isolated. Natural host. Geographic distribution. Naturally occurring human disease. Human ... Phylogeny of New World arenaviruses based on the complete coding sequences of the small genomic segment identified an ... New World. *Downs, Wilbur G.; Anderson, C. R.; Spence, L.; Aitken, T. H. G., and Greenhall, A. H. Tacaribe virus, a new agent ...
New World arenavirus - Junin virus 2010. Current. New World arenavirus - Machupo virus(https://wwwn.cdc.gov/nndss/conditions/ ... New World arenavirus - Guanarito virus(https://wwwn.cdc.gov/nndss/conditions/new-world-arenavirus-guanarito-virus/) ... New World arenavirus - Sabia virus(https://wwwn.cdc.gov/nndss/conditions/new-world-arenavirus-sabia-virus/) ... wwwn.cdc.gov/nndss/conditions/new-world-arenavirus-junin-virus/case-definition/2011/) ...
α-Dystroglycan is a cellular receptor for New World clade C and Old World arenaviruses (25-27). Four New World clade B ... the Old World arenaviruses, which include lymphocytic choriomeningitis virus (LCMV) and Lassa virus (LASV), and the New World ... and the geographic distribution of each arenavirus is determined by the range of its corresponding host. New World arenaviruses ... 2002) New World arenavirus clade C, but not clade A, B viruses, utilizes alpha-dystroglycan as its major receptor. J Virol 76: ...
New World Clade B Arenaviruses Can Use Transferrin Receptor 1 (TfR1)-Dependent and -Independent Entry Pathways, and ... New World Clade B Arenaviruses Can Use Transferrin Receptor 1 (TfR1)-Dependent and -Independent Entry Pathways, and ... New World Clade B Arenaviruses Can Use Transferrin Receptor 1 (TfR1)-Dependent and -Independent Entry Pathways, and ... New World Clade B Arenaviruses Can Use Transferrin Receptor 1 (TfR1)-Dependent and -Independent Entry Pathways, and ...
Pichinde virus is an arenavirus which causes severe illness similar to Lassa fever in strain 13 guinea pigs, but does not cause ... We used this infection to evaluate the effect of arenavirus on liver morphology and function. When guinea pigs were infected ... The Effect of an Arenavirus Infection on Liver Morphology and Function * Helen L. Lucia, Dorian H. Coppenhaver, Robert L. ... Pichinde virus is an arenavirus which causes severe illness similar to Lassa fever in strain 13 guinea pigs, but does not cause ...
A novel arenavirus was identified. The source of the first patients infection remains undetermined. ... known Old World arenaviruses (5). The novel arenavirus was isolated in culture from the blood and liver samples of patients 2 ... Isolation of an arenavirus closely related to Lassa virus from Mastomys natalensis in south-east Africa. Bull World Health ... Old World arenaviruses not known to be pathogenic for humans include Ippy and Mobala viruses from the Central African Republic ...
The genus Arenavirus includes 22 viral species and 9 additional arenaviruses that have been recently discovered, for which ... Arenaviruses are single-stranded ribonucleic acid (RNA) viruses that cause chronic infections in rodents and zoonotically ... Fatal illnesses associated with a new world arenavirus--California, 1999-2000. MMWR Morb Mortal Wkly Rep. 2000 Aug 11. 49(31): ... encoded search term (Arenaviruses) and Arenaviruses What to Read Next on Medscape. Related Conditions and Diseases. * ...
Fatal illnesses associated with a New World arenavirus-California, 1999-2000. MMWR Morb Mortal Wkly Rep. 2000;49:709-11.PubMed ... The arenaviruses (family Arenaviridae, genus Arenavirus) known to occur in North America include Whitewater Arroyo virus (WWAV ... Delgado S, Erickson BR, Agudo R, Blair PJ, Vallejo E, Albariño CG, Chapare virus, a newly discovered arenavirus isolated from a ... Fulhorst CF, Milazzo ML, Armstrong LR, Childs JE, Rollin PE, Khabbaz R, Hantavirus and arenavirus antibodies in persons with ...
The arenaviruses are a large family of emerging negative-stranded RNA viruses that include several severe human pathogens ... Old World arenaviruses New World arenaviruses Lassa virus Machupo virus Junin virus Glycoprotein Proprotein convertases ... Differential recognition of old world and New World arenavirus envelope glycoproteins by subtilisin kexin isozyme 1 (Ski-1)/ ... Utilization of human Dc-Sign and L-Sign for entry and infection of host cells by the New World arenavirus, Junin virus. Biochem ...
Antibody to at least one arenavirus was found in 220 (3.1%) of 7,106 rodents tested. The antibody-positive animals included Mus ... The results suggest that arenaviruses are widely distributed in the southern United States and that one or more indigenous ... arenaviruses are associated with Neotoma spp. in North America. ... geographic distribution and rodent host range of arenaviruses ... Research on Dengue during World War II 1 Author: Albert B. Sabin ... Antibody to at least one arenavirus was found in 220 (3.1%) of ...
Murphy, Frederick A. & Whitfield, Sylvia G. (‎1975)‎. Morphology and morphogenesis of arenaviruses*. Bulletin of the World ...
Browse by Exposure: Arenaviruses, New World (1 article). % of records by year: 1965 2017 ...
Access New World Arenavirus - Guanarito Virus case definitions; uniform criteria used to define a disease for public health ... New World arenavirus - Junin virus 2010 Current New World arenavirus - Machupo virus ...
World Health Organization Collaborating Centre for Vaccine Immunology, University of Geneva, Geneva, Switzerland.. 3. Division ... To investigate the mechanisms underlying arenavirus nAb evasion we engineered several arenavirus envelope-chimeric viruses and ... Arenavirus Glycan Shield Promotes Neutralizing Antibody Evasion and Protracted Infection.. Sommerstein R1,2, Flatz L1, Remy MM1 ... Arenaviruses such as Lassa virus (LASV) can cause severe hemorrhagic fever in humans. As a major impediment to vaccine ...
In this article, we present the current knowledge about the hematological alterations present in VHF induced by arenaviruses, ... caused by arenaviruses are acute diseases characterized by fever, headache, general malaise, impaired cellular immunity, ... Transferrin receptor 1 is a cellular receptor for new world haemorrhagic fever arenaviruses. Nature 2007, 446, 92-96. [Google ... In the rodent, arenaviruses usually establish a persistent chronic infection with few symptoms [1]. However, arenaviruses may ...
Arenaviruses groups. Arenavirus are divided into two groups: the New World or Tacaribe complex and the Old World or LCM/Lassa ... Arenavirus infections are relatively common in humans in some areas of the world and can cause severe illnesses. ... Arenavirus history. The first Arenavirus, Lymphocytic choriomeningitis virus (LCMV), was isolated in 1933 during a study of an ... Spreading Arenavirus infections. The rodent hosts of Arenavirus species are chronically infected with virus; however, the ...
It is a member of Clade A of the Tacaribe (or "New World") serocomplex of the family Arenaviridae. Laboratory workers infected ... Zuckerman 2014, p. 10 "Viral Hemorrhagic Fevers Caused by Arenaviruses" (PDF). The Center for Food Security and Public Health. ... Zuckerman, Ben (2014). Howard, C R (ed.). Arenaviruses. Elsevier. p. 7. ISBN 9780080877372. ... an arenavirus with a mammalian host. It was first found in semiaquatic rodents of the genus Oryzomys in tropical forest in the ...
The New World and Old World species diverged less than 45,000 years ago. The New World species evolved between 41,400 and 3,300 ... virus is the only arenavirus to exist in both areas but is classified as an Old World virus. Old and New World area viruses ... termini of the virion RNA species of New World and Old World arenaviruses". Virology. 121 (1): 200-3. doi:10.1016/0042-6822(82) ... The Old World species evolved between 23,100 and 1,880 years ago, most likely in southern Africa. Some arenaviruses are ...
Here, we describe efforts to produce cross-reactive monoclonal antibodies that bind to both New and Old World arenaviruses. All ... Antibodies to the Glycoprotein GP2 Subunit Cross-React between Old and New World Arenaviruses. Several viruses in the ... Here, we describe efforts to produce cross-reactive monoclonal antibodies that bind to both New and Old World arenaviruses. All ... Antibodies to the Glycoprotein GP2 Subunit Cross-React between Old and New World Arenaviruses ...
Find out information about arenavirus. A family of ribonucleic acid animal viruses consisting of a single genus, Arenavirus, ... having an enveloped, spherical pleomorphic form Explanation of arenavirus ... LCMV is the only arenavirus to exist in both areas; however, it is classified as an Old World virus.. Chapter 7 Viral zoonoses ... redirected from arenavirus). Also found in: Dictionary, Thesaurus, Medical, Wikipedia.. Related to arenavirus: bunyavirus ...
All of the highly pathogenic New World arenaviruses (NWA) phylogenetically segregate into clade B and require maximum biosafety ... All of the highly pathogenic New World arenaviruses (NWA; Junín, Machupo, Guanarito, Sabia), including the recently identified ... Identification and characterization of potent small molecule inhibitor of hemorrhagic fever New World arenaviruses. Antiviral ... In vitro anti-arenavirus activity of MY-24. The activity of the aristeromycin derivative, MY-24, was investigated in several ...
Old World (OW) and New World (NW) complexes. The Lassa and Lujo viruses in the OW complex and the Guanarito, Junin, Machupo, ... However, these arenaviruses are classified as BSL-4 pathogens, thus making it difficult to develop diagnostic techniques for ... We recently developed arenavirus neutralization assays using vesicular stomatitis virus (VSV)-based pseudotypes bearing ... arenavirus recombinant glycoproteins. The goal of this article is to review the recent advances in developing laboratory ...
The ability of a New World (NW) clade B arenavirus to enter cells using human transferrin receptor 1 (TfR1) strictly correlates ... Host-species transferrin receptor 1 orthologs are cellular receptors for nonpathogenic New World clade B arenaviruses Academic ... Our data support an in vivo role for TfR1 in the replication of most, if not all, NW clade B arenaviruses, and suggest that ... Amapari (AMAV) and Tacaribe (TCRV), two nonpathogenic NW clade B arenaviruses that do not use human TfR1, are closely related ...
... and arenaviruses [e.g., Lassa, Machupo]). ... In the New World, malaria has a much more recent history; it is ... CDC continues to work closely with USDA, the World Health Organization, the World Animal Health Organization, the Food and ... but in much of the New World and in many European cities in the Old World. It was not uncommon for ships to arrive in port with ... The growth of world air travel has averaged 5 percent per year for the past 30 years, and the current rate of increase is ...
The new world arenavirus tacaribe virus induces caspase-dependent apoptosis in infected cells. In: Journal of General Virology ... The new world arenavirus tacaribe virus induces caspase-dependent apoptosis in infected cells. Journal of General Virology. ... The new world arenavirus tacaribe virus induces caspase-dependent apoptosis in infected cells. / Wolff, Svenja; Groseth, ... Wolff, S, Groseth, A, Meyer, B, Jackson, D, Strecker, T, Kaufmann, A & Becker, S 2016, The new world arenavirus tacaribe virus ...
New World arenavirus clade C, but not clade A and B viruses, utilizes α-dystroglycan as its major receptor. J. Virol. 76:5140- ... The pathogenic New World arenaviruses, such as JUNV, bind the host cell transferrin receptor 1 (TfR1) through the G1 receptor- ... The Old World arenaviruses, such as LASV and lymphocytic choriomeningitis virus (LCMV), as well as several nonpathogenic New ... Transferrin receptor 1 is a cellular receptor for New World haemorrhagic fever arenaviruses. Nature 446:92-96. ...
Host-Species Transferrin Receptor 1 Orthologs Are Cellular Receptors for Nonpathogenic New World Clade B Arenaviruses Jonathan ...
Tacaribe complex (New world arenaviruses) Rotavirus Parvovirus Lentivirus Orthopoxvirus Orthopoxvirus Ebolavirus Lentivirus ...
Tacaribe complex (New world arenaviruses) Comments Electron micrograph. Arenaviridae are RNA viruses whose particles are ...
The Old World arenavirus Lassa virus (LASV) poses the highest public health concern among HF arenaviruses. LASV is estimated to ... 2006) Identification and characterization of potent small molecule inhibitor of hemorrhagic fever New World arenaviruses. ... 2006) Phylogeny and evolution of Old World arenaviruses. Virology 350:251-257. ... Arenaviruses are mostly noncytolytic, and recombinant arenaviruses expressing reporter genes have not been available, which has ...
  • The family Arenaviridae consists of a single genus ( Arenavirus ) composed of at least 24 viruses ( 2 , 3 ). (pnas.org)
  • The arenaviruses (family Arenaviridae , genus Arenavirus ) known to occur in North America include Whitewater Arroyo virus (WWAV), 7 other members of the Tacaribe serocomplex ( Table 1 ), and lymphocytic choriomeningitis virus (LCMV, the prototypic member of the lymphocytic choriomeningitis-Lassa serocomplex). (cdc.gov)
  • It is a member of Clade A of the Tacaribe (or "New World") serocomplex of the family Arenaviridae. (wikipedia.org)
  • An arenavirus is a bisegmented ambisense RNA virus that is a member of the family Arenaviridae. (wikipedia.org)
  • Within the family Arenaviridae, arenaviruses were formerly all placed in the genus Arenavirus, but in 2014 were divided into the genera Mammarenavirus for those with mammalian hosts and Reptarenavirus for those infecting snakes. (wikipedia.org)
  • The family Arenaviridae , genus Arenavirus, consists of two phylogenetically independent groups: Old World (OW) and New World (NW) complexes. (mdpi.com)
  • Arenaviruses (family Arenaviridae) are primarily rodent-borne RNA viruses. (thefreelibrary.com)
  • Our data show that these New World arenaviruses are specifically adapted to the TfR1 orthologs of their respective rodent hosts and identify key commonalities between these orthologs and human TfR1 necessary for efficient transmission of these viruses to humans. (pnas.org)
  • Arenaviruses are enveloped, single-stranded, bisegmented RNA viruses with ambisense genomes ( 1 ). (pnas.org)
  • The phylogenetic diversity of arenaviruses is likely the result of long-term coevolution of the viruses and their corresponding hosts ( 11 , 12 ). (pnas.org)
  • Arenaviruses are rodent-borne enveloped RNA viruses and broken down into two groups, Old World and New World. (cdc.gov)
  • The South American hemorrhagic fever viruses belong to the Tacaribe complex or New World arena viruses (e.g. (cdc.gov)
  • The arenaviruses are a large family of emerging negative-stranded RNA viruses that include several severe human pathogens causing hemorrhagic fevers with high mortality. (springer.com)
  • To investigate the mechanisms underlying arenavirus nAb evasion we engineered several arenavirus envelope-chimeric viruses and glycan-deficient variants thereof. (nih.gov)
  • B-C) We infected C57BL/6 mice i.v. with 2x10 5 PFU of the indicated recombinant LCM viruses carrying a range of clade B arenavirus GPs. (nih.gov)
  • The arenaviruses are essentially rodent-borne viruses. (mdpi.com)
  • In contrast, the other arenaviruses infect different types of rodents with circumscribed geographical distribution patterns that relate to the distribution of the associated viruses. (mdpi.com)
  • Arenaviruses are enveloped viruses with a bisegmented negative-strand (NS) RNA genome ( 9 ). (pnas.org)
  • Although they are categorized as negative-sense viruses, arenaviruses are ambisense. (wikipedia.org)
  • A family of ribonucleic acid animal viruses consisting of a single genus, Arenavirus, having an enveloped, spherical pleomorphic form. (thefreedictionary.com)
  • [21] Alpha-dystroglycan is also used as a receptor by viruses of the New World clade C arenaviruses (Oliveros and Latino viruses). (wikipedia.org)
  • In contrast, the New World arenaviruses of clades A and B, which include the important viruses Machupo , Guanarito , Junin , and Sabia in addition to the non pathogenic Amapari virus, use the transferrin receptor 1 . (wikipedia.org)
  • The genetic diversity of arenaviruses in their respective rodent hosts provides a vast reservoir for the continual emergence of new viruses ( 1 , 18 ). (asm.org)
  • Arenaviruses are enveloped viruses, with a bisegmented RNA genome that encodes the ambisense expression of four proteins. (asm.org)
  • The Old World arenaviruses, such as LASV and lymphocytic choriomeningitis virus (LCMV), as well as several nonpathogenic New World viruses, use the cellular α-dystroglycan protein for uptake into the endosome ( 15 , 64 ). (asm.org)
  • The prototype of the family, lymphocytic choriomeningitis virus (LCMV) is a member of the Old World arenavirus group, which also includes Ippy (IPPV), Lassa (LASV), Mobala (MOBV), and Mopeia (MOPV) viruses. (hindawi.com)
  • Viral haemorrhagic fevers are a group of illnesses caused by several distinct families of viruses: arenaviruses, filoviruses, bunyaviruses and flaviviruses. (www.gov.uk)
  • Lassa fever is an acute viral haemorrhagic illness caused by Lassa virus, a member of the arenavirus family of viruses. (springer.com)
  • And this virus, described in the journal mBio , appears to be related to both Ebola and another deadly class of viruses called arenaviruses . (npr.org)
  • VHFs are caused by viruses of four distinct families: arenaviruses, filoviruses, bunyaviruses, and flaviviruses. (medicinenet.com)
  • The rodent hosts of arenaviruses are chronically infected with the viruses but the viruses donot seem to cause any illness to the rodents. (kenyon.edu)
  • One is that at some point snakes carried both arenaviruses and Ebola viruses, allowing them to swap genes. (nhpr.org)
  • Dr Ben Neuman, in collaboration with labs in California and Oregon and AVI Biopharma of Corvallis Oregon, has designed a drug which reduces the spread of infection of a family of viruses known as arenaviruses by up to 90% in laboratory tests. (healthcanal.com)
  • Dr Neuman, from the University of Reading's School of Biological Sciences, showed that three related PPMO compounds could prevent the spread of infection from cells which were infected by four different viruses of the arenavirus family. (healthcanal.com)
  • In some cases, as with New World hantaviruses, hamsters represent the only known small animal model of human disease caused by these viruses, elevating their importance as a tool to understand human disease pathogenesis. (hindawi.com)
  • Guanarito virus is one of the diseases derived from the family Arenaviruses, which can vary in severity in subgroups of Old World and New World viruses. (inquisitr.com)
  • Arenavirus is a group or family of viruses whose members are generally associated with conditions transmitted by jungle rodents of the genus "calomys" in humans. (flutrackers.com)
  • The receptor for several arenaviruses, alpha-dystroglycan, was identified, the replication strategy of these viruses was decoded, and application of a reverse genetics system for studying viral gene function and viral biology is well underway. (worldcat.org)
  • This book is as much an autobiography of Dr. Peters as it is a story of how very deadly viruses can (and do) jump on some sort of vector (like a rhesus monkey) and travel to populated areas of the world (like Reston, Virginia). (historyofvaccines.org)
  • After the virus was identified, researchers were able to grow an isolate one of the viruses in the laboratory and found that it doesn't fit perfectly into either of the two known categories of arenaviruses: Old World and New World. (medicaldaily.com)
  • While the two strains looked like distant relatives of other arenaviruses, the strains of viruses found in the recent study had a gene or protein coat that was more similar to those of Ebola viruses. (medicaldaily.com)
  • The research group led by Professor Daniel Pinschewer of the University of Basel had already discovered in previous studies that viruses from the arenavirus family are highly suitable as vehicles for triggering a strong immune response. (bionity.com)
  • We are excited to continue this line of research to further evaluate in animal models the potential of targeting DDX3 to counteract infections with arenaviruses and perhaps other hemorrhagic fever viruses. (news-medical.net)
  • According to the World Health Organization , Lassa fever is "an acute viral hemorrhagic illness caused by Lassa virus, a member of the arenavirus family of viruses," and was first identified in 1969 and named after the town in Nigeria where it was discovered. (theepochtimes.com)
  • We used this infection to evaluate the effect of arenavirus on liver morphology and function. (ajtmh.org)
  • We describe a nosocomial outbreak of infection with a novel arenavirus involving 5 patients, 4 of whom died, which occurred in South Africa in September-October 2008. (cdc.gov)
  • Banerjee C, Allen LJ, Salazar-Bravo J. Models for an arenavirus infection in a rodent population: consequences of horizontal, vertical and sexual transmission. (medscape.com)
  • The California Department of Health Services (CDHS) and University of Texas Medical Center recently identified evidence of infection with an arenavirus in three patients hospitalized with similar fatal illnesses. (cdc.gov)
  • During the arenavirus life cycle, processing of the viral envelope glycoprotein precursor (GPC) by the cellular subtilisin kexin isozyme-1 (SKI-1)/site-1 protease (S1P) is crucial for productive infection. (springer.com)
  • Apart from being an essential host factor for arenavirus infection, SKI-1/S1P is involved in the regulation of important physiological processes and linked to major human diseases. (springer.com)
  • The crucial role of SKI-1/S1P in arenavirus infection and other major human diseases combined with its nature as an enzyme makes SKI-1/S1P further an attractive target for therapeutic intervention. (springer.com)
  • Arenavirus infection induces discrete cytosolic structures for Rna replication. (springer.com)
  • Here we show that infection with Tacaribe virus (TCRV), which is widely considered the prototype for non-pathogenic arenaviruses, leads to stronger induction of apoptosis than does infection with its human-pathogenic relative Junı´n virus. (umn.edu)
  • Arenavirus Glycan Shield Promotes Neutralizing Antibody Evasion and Protracted Infection. (nih.gov)
  • In the rodent, arenaviruses usually establish a persistent chronic infection with few symptoms [ 1 ]. (mdpi.com)
  • Human infection with an arenavirus is likely to be very uncommon. (thefreedictionary.com)
  • The new AG129 mouse TCRV infection model provides a safe and cost-effective means to conduct early-stage pre-clinical evaluations of candidate antiviral therapies that target clade B arenaviruses. (pubmedcentralcanada.ca)
  • Presently, there are no clade B arenavirus infection models outside of newborn mice suitable for early stage antiviral drug development and proof-of-concept studies. (pubmedcentralcanada.ca)
  • At present, there are no licensed vaccines to prevent arenavirus infection and no effective therapies. (asm.org)
  • transferrin receptor 1 (TfR1) as the receptor for New World hemorrhagic fever arenaviruses, and an antibody that inhibits the infection of all five pathogenic New World arenaviruses. (scripps.edu)
  • The South American Arenaviruses are very rare causes of infection in travellers. (www.gov.uk)
  • The systematic collection will allow to corroborate the possible association between arenaviruses infection and pathogenesis of odontogenic tumors in humans. (springer.com)
  • Microbial infection) Acts as a receptor for new-world arenaviruses: Guanarito, Junin and Machupo virus. (abcam.com)
  • Due to this fact, other groups have used PIC as a model virus for arenavirus infection. (biomedcentral.com)
  • The Minister of Health, Gabriela Monta o, said today that no new suspected case of Arenavirus was reported , rather it was discharged to two people with signs of infection. (flutrackers.com)
  • Callitrichid hepatitis (CH) is an acute, often fatal viral infection of New World primates from the family Callitrichidae. (elsevier.com)
  • Here we investigated the mechanisms underlying LASV endocytosis in human cells in the context of productive arenavirus infection, using recombinant lymphocytic choriomeningitis virus (rLCMV) expressing the LASV glycoprotein (rLCMV-LASVGP). (selleckchem.com)
  • When combined with ribavirin, which is currently used to treat human arenavirus infection, EMD 1214063 showed additive antiviral effects. (selleckchem.com)
  • A related arenavirus, Pichinde virus (PICV), is capable of causing a disease in guinea pigs that mimics LASV infection in humans. (emory.edu)
  • Further experiments with Lassa virus and Junín virus, an arenavirus endemic in Argentina, confirmed the importance of DDX3 in arenavirus infection of human cells. (news-medical.net)
  • Overall, these findings reveal the importance of DDX3 in arenavirus infection and identify it as a potential target for new anti-arenavirus strategies. (news-medical.net)
  • Arenaviruses such as Lassa virus (LASV) can cause severe hemorrhagic fever in humans. (nih.gov)
  • The Old World arenavirus Lassa virus (LASV) poses the highest public health concern among HF arenaviruses. (pnas.org)
  • Recent studies have identified small molecule inhibitors of Tacaribe virus ( 7 ) and LASV ( 8 ) cell entry, but their antiviral activity in animal models of HF arenaviruses has not been examined. (pnas.org)
  • Reverse genetics systems have been now developed for LCMV ( 11 ), LASV ( 12 ), and Tacaribe virus ( 13 ), which are allowing investigators to examine the cis -acting sequences and trans -acting factors that control arenavirus replication and gene expression, as well as assembly and budding ( 14 ). (pnas.org)
  • Lassa virus ( LASV ) is an arenavirus that causes Lassa hemorrhagic fever , [1] a type of viral hemorrhagic fever (VHF), in humans and other primates. (wikipedia.org)
  • Several arenaviruses, chiefly Lassa virus (LASV), cause hemorrhagic fever disease in humans and represent a serious public health problem in their areas of endemicity ( 3 , 31 , 39 ). (pubmedcentralcanada.ca)
  • The pathogenic Old World arenavirus Lassa virus (LASV) causes a severe hemorrhagic fever with a high rate of mortality in humans. (selleckchem.com)
  • Rodents of the Muridae family are the natural hosts of most arenaviruses, and the geographic distribution of each arenavirus is determined by the range of its corresponding host. (pnas.org)
  • Arenaviruses associated with rodents are known to cause fatal hemorrhagic fevers in humans in South America and West Africa. (cdc.gov)
  • Antibody to at least one arenavirus was found in 220 (3.1%) of 7,106 rodents tested. (ajtmh.org)
  • In this regard, arenaviruses are etiologic agents of emerging diseases as a result of environmental modifications by humans, through the creation of new ecological environments either for agricultural production or for places to live that favor contact with wild rodents [ 4 ]. (mdpi.com)
  • Because of the epidemiological association with rodents, some arenaviruses and bunyaviruses are designated as roboviruses. (wikipedia.org)
  • Lymphocytic choriomeningitis virus (LCMV) is an arenavirus carried by rodents, most notably domestic house mice (Mus musculus), but also laboratory and pet rodents (1). (thefreedictionary.com)
  • Humans can get infected with the arenaviruses when an individual comes into contact with the excretions or materials contaminated with the excretions of infected rodents. (kenyon.edu)
  • Arenaviruses are normally found in small mammals, such as rodents and bats. (healthcanal.com)
  • Arenaviruses cause chronic infections of rodents with a worldwide distribution ( 3 ). (pubmedcentralcanada.ca)
  • The virus is an arenavirus, one that can infect rodents and then be transferred to humans. (inquisitr.com)
  • New research published July 12 in the journal PLOS Pathogens uncovered a protein enabling the replication of arenaviruses, pathogens carried by rodents that can infect humans and cause lethal hemorrhagic fevers. (news-medical.net)
  • The Old World arenaviruses include the agents of Lassa fever and lymphocytic choriomeningitis (LCM). (cdc.gov)
  • However, the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) has proven to be a Rosetta stone for the investigation of virus-host interactions. (pnas.org)
  • Thus, the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) has proven to be a superb workhorse in the field of virology and immunology ( 1 ). (pnas.org)
  • It shares this receptor with the prototypic Old World arenavirus lymphocytic choriomeningitis virus . (wikipedia.org)
  • Lymphocytic Choriomeningitis virus (LSMV) was the first arenavirus to be isolated in 1933 during a study of an epidemic of St. Louis Encephalitis. (kenyon.edu)
  • The previously unknown arenavirus, which was identified using genetic extracts of blood and liver from the victims and through unbiased high-throughput sequencing, is distantly related to Lassa virus and Lymphocytic choriomeningitis virus (LCMV). (bio-medicine.org)
  • Moreover, compelling evidence indicates that the worldwide-distributed prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) is a neglected human pathogen of clinical significance ( 23 , 32 ) and poses a special threat to immunocompromised individuals, as illustrated by cases of transplant-associated infections by LCMV with fatal outcomes ( 10 , 36 , 40 ). (pubmedcentralcanada.ca)
  • The previously unknown arenavirus, which is distantly related to the Lassa virus and Lymphocytic choriomeningitis virus, was characterized using the rapid and sensitive sequencing technology of 454 Life Sciences. (pressebox.com)
  • Transferrin receptor 1 (TfR1) is a cellular receptor for the New World hemorrhagic fever arenaviruses Machupo (MACV), Junín (JUNV), and Guanarito (GTOV). (pnas.org)
  • Other examples include Junín, Machupo, Guanarito and Sabia arenaviruses that cause sporadic outbreaks of haemorrhagic fevers in South America. (biomedcentral.com)
  • She had visited a tourist camp on the Zambezi River on July 30 and 31, 2008, and participated in a polocrosse tournament on August 1 and 2 (but neither event occurred within the known incubation period of arenavirus infections from the date of onset of her illness). (cdc.gov)
  • Preventive measures for arenavirus infections include control of rodent populations and their exclusion from human dwellings. (cdc.gov)
  • Taken together, our data identify and characterize an important virus-host cell interaction of the prototypic, non-pathogenic arenavirus TCRV, which provides important insight into the growing field of arenavirus research aimed at better understanding the diversity in responses to different arenavirus infections and their functional consequences. (umn.edu)
  • Arenaviruses merit significant interest both as tractable experimental model systems to study acute and persistent viral infections and as clinically important human pathogens ( 1 - 3 ). (pnas.org)
  • 2007) In vitro and in vivo activities of T-705 against arenavirus and bunyavirus infections. (thefreedictionary.com)
  • However, these arenaviruses are classified as BSL-4 pathogens, thus making it difficult to develop diagnostic techniques for these virus infections in institutes without BSL-4 facilities. (mdpi.com)
  • Arenavirus infections are relatively common in humans in some areas of the world and can cause severe illnesses. (kenyon.edu)
  • Stenglein soon found genetic code for a virus related to so-called arenaviruses, which can cause deadly infections in people. (nhpr.org)
  • It is also thought that PPMO could one day be given as a preventative measure to people who will be travelling to places where arenavirus infections are common. (healthcanal.com)
  • According to the WHO, the Lassa virus-;an arenavirus with symptoms similar to the Ebola virus-;is currently widespread in West Africa, with nearly 300,000 infections and more than 5,000 deaths reported per year. (news-medical.net)
  • Therefore, understanding how arenaviruses exploit the host molecules is important and may lead to new treatments to fight these deadly infections. (news-medical.net)
  • Molecular phylogeny of Guanarito virus, an emerging arenavirus affecting humans. (semanticscholar.org)
  • Amapari (AMAV) and Tacaribe (TCRV), two nonpathogenic NW clade B arenaviruses that do not use human TfR1, are closely related to the NW arenaviruses that cause hemorrhagic fevers. (scripps.edu)
  • Viral hemorrhagic fevers (VHFs) caused by arenaviruses are acute diseases characterized by fever, headache, general malaise, impaired cellular immunity, eventual neurologic involvement, and hemostatic alterations that may ultimately lead to shock and death. (mdpi.com)
  • Zuckerman 2014, p. 10 "Viral Hemorrhagic Fevers Caused by Arenaviruses" (PDF). (wikipedia.org)
  • Fukushi S, Tani H, Yoshikawa T, Saijo M, Morikawa S. Serological Assays Based on Recombinant Viral Proteins for the Diagnosis of Arenavirus Hemorrhagic Fevers. (mdpi.com)
  • Members of both genera can cause life-threatening diseases in humans: arenaviruses cause hemorrhagic fevers in the Americas and Africa, and hantaviruses cause hemorrhagic fever with renal syndrome in Asia and Europe and hantavirus cardiopulmonary syndrome in the Americas. (cdc.gov)
  • α-Dystroglycan is a cellular receptor for New World clade C and Old World arenaviruses ( 25 - 27 ). (pnas.org)
  • Four New World clade B arenaviruses (MACV, JUNV, GTOV, and SABV) use transferrin receptor 1 (TfR1) as a cellular receptor ( 28 ). (pnas.org)
  • The ability of a New World (NW) clade B arenavirus to enter cells using human transferrin receptor 1 (TfR1) strictly correlates with its ability to cause hemorrhagic fever. (scripps.edu)
  • Our data support an in vivo role for TfR1 in the replication of most, if not all, NW clade B arenaviruses, and suggest that with modest changes in their GPs the nonpathogenic arenaviruses could use human TfR1 and emerge as human pathogens. (scripps.edu)
  • All of the highly pathogenic New World arenaviruses (NWA) phylogenetically segregate into clade B and require maximum biosafety containment facilities for their study. (pubmedcentralcanada.ca)
  • Tacaribe virus (TCRV) is a nonpathogenic member of clade B that is closely related to the VHF arenaviruses at the amino acid level. (pubmedcentralcanada.ca)
  • In contrast, in a hamster model of arenaviral hemorrhagic fever based on challenge with clade A Pichinde arenavirus, MY-24 did not offer significant protection against mortality. (pubmedcentralcanada.ca)
  • Abraham J, Kwong JA, Albariño CG, Lu JG, Radoshitzky SR, Salazar-Bravo J, Farzan M, Spiropoulou CF, Choe H. Host-species transferrin receptor 1 orthologs are cellular receptors for nonpathogenic New World clade B arenaviruses. (scripps.edu)
  • Several arenaviruses cause viral hemorrhagic fever syndromes in Africa and South America. (cdc.gov)
  • More recently, new arenaviruses have been associated with HF, such as Chapare virus in Bolivia [ 2 ] or Lujo virus (LUJV) in Southern Africa [ 3 ]. (mdpi.com)
  • In Africa, only Lassa and Lujo arenaviruses are known to be highly pathogenic to humans. (thefreelibrary.com)
  • It is the first new hemorrhagic fever-associated arenavirus from Africa identified in nearly four decades. (bio-medicine.org)
  • A detailed genetic analysis of this novel arenavirus, named Lujo virus, after the sites of the outbreak (Lusaka, Zambia, and Johannesburg, South Africa) is published online in PLoS Pathogens ( http://dx.plos.org/10.1371/journal.ppat.1000455 ). (bio-medicine.org)
  • We were honored in this most recent example to work with outstanding investigators at the U. S. Centers for Disease Control and Prevention, the National Institute for Communicable Diseases, South Africa, the CII, and the World Health Organization. (bio-medicine.org)
  • 4 deaths in S. Africa from unknown virus-now identified as arenavirus. (slideserve.com)
  • The new species, named 'Lujo virus' for the geographic origin of the outbreak (Lusaka, Zambia and Johannesburg, South Africa), is the first hemorrhagic fever-associated arenavirus from Africa identified in the past three decades. (pressebox.com)
  • However, arenaviruses may occasionally be transmitted to humans through material contaminated with an infected rodent's excreta. (mdpi.com)
  • Several arenaviruses cause hemorrhagic fever disease in humans for which no licensed vaccines are available and current therapeutic intervention is limited to the off-label use of the wide-spectrum antiviral ribavirin. (pnas.org)
  • However, several arenaviruses cause hemorrhagic fever (HF) disease in humans, associated with high morbidity and mortality ( 2 , 3 ). (pnas.org)
  • Arenavirus typically is associated with wild wood rats and believed to be transmitted to humans in dust carrying an infected rodent's urine, feces or saliva, a health expert said Friday. (thefreedictionary.com)
  • Arenaviruses are generally associated with rodent-transmitted diseases in humans. (kenyon.edu)
  • Some arenaviruses can also infect humans, potentially causing severe disease or death. (biomedcentral.com)
  • Sabiá virus, one of five arenaviruses from South America known to cause hemorrhagic fever in humans, emerged in 1990 when it was isolated from a fatal case in Sao Paulo, Brazil. (semanticscholar.org)
  • Arenavirus steals cap from cellular RNA and replication occurs. (kenyon.edu)
  • The molecular biology section of the Special Pathogens Branch has an active program that uses molecular biology approaches to investigate disease outbreaks and to analyze mechanisms of replication, maintenance, and transmission of bunyaviruses, filoviruses, and arenaviruses. (asm.org)
  • Three amino acid changes in the C terminus of L are required for increased virulence of the P18 strain by increasing the rate of viral genome replication, indicating that the rate of viral genome replication is an important factor in arenavirus pathogenesis. (emory.edu)
  • In addition to other chapters in this volume, many reviews have been published in recent years about arenaviruses and their pathogenesis [ 1 , 5 , 6 , 7 , 8 , 9 ]. (mdpi.com)
  • Choe H, Jemielity S, Abraham J, Radoshitzky SR, Farzan M. Transferrin receptor 1 in the zoonosis and pathogenesis of New World hemorrhagic fever arenaviruses. (scripps.edu)
  • LCMV infects Mus musculus , the common mouse, which explains why this virus is the only arenavirus with a worldwide distribution. (mdpi.com)
  • So this virus is actually a mashup, or a genetic mix of arenaviruses and Ebola virus. (nhpr.org)
  • Another possibility, he says, is that "Ebola and arenavirus as we know them today evolved from this. (nhpr.org)
  • Lassa virus, a member of the Arenavirus family, is very different from Ebolavirus (a filovirus), but both are zoonotic pathogens that may cause hemorrhagic fever. (virology.ws)
  • Pichinde virus is an arenavirus which causes severe illness similar to Lassa fever in strain 13 guinea pigs, but does not cause severe illness in man. (ajtmh.org)
  • The pathogenic New World arenaviruses, such as JUNV, bind the host cell transferrin receptor 1 (TfR1) through the G1 receptor-binding subunit of GPC ( 1 , 54 ), whereupon the virus is endocytosed. (asm.org)
  • These zoonotic events are enabled by the specific interaction between the New World arenaviral attachment glycoprotein, GP1, and cell surface human transferrin receptor (hTfR1). (rcsb.org)
  • Our results uncover novel mechanisms used by arenavirus to exploit the host machinery and subvert immunity, singling out DDX3 as a potential host target for developing new therapies against highly pathogenic arenaviruses,' the authors write in the study. (news-medical.net)
  • Thus, arenavirus envelope glycosylation impairs the protective efficacy rather than the induction of nAbs, and thereby prevents efficient antibody-mediated virus control. (nih.gov)
  • Here, we present the structural basis for how a mouse-derived neutralizing antibody (nAb), OD01, disrupts this interaction by targeting the receptor-binding surface of the GP1 glycoprotein from Junín virus (JUNV), a hemorrhagic fever arenavirus endemic in central Argentina. (rcsb.org)
  • A class of novel, highly divergent arenaviruses, properly known as reptarenaviruses, have also been discovered which infect snakes to produce inclusion body disease. (wikipedia.org)
  • Entry of arenaviruses into their target cells is facilitated by the two noncovalently linked surface glycoproteins GP1 and GP2. (pnas.org)
  • We recently developed arenavirus neutralization assays using vesicular stomatitis virus (VSV)-based pseudotypes bearing arenavirus recombinant glycoproteins. (mdpi.com)
  • The cellular proprotein convertase site 1 protease (S1P) has been implicated in the proteolytic processing of the glycoproteins (GPs) of Old World arenaviruses. (sigmaaldrich.com)
  • Site-specific antibodies define a cleavage site conserved among arenavirus GP-C glycoproteins. (semanticscholar.org)
  • The team closely examined the interaction between the virus proteins and the host proteins, a process that yielded the creation of a map - the first ever - of human protein partners of arenavirus and hantavirus glycoproteins (GPs). (uvm.edu)
  • Therefore, it is of great importance to detect these pathogens rapidly and specifically in order to minimize the risk and scale of arenavirus outbreaks. (mdpi.com)
  • Genetic diversity among arenavirus species in their respective rodent hosts supports the continued emergence of new pathogens. (asm.org)
  • To investigate the role of synanthropic small mammals as potential reservoirs of emerging pathogens in Ethiopia, we sampled rodent and shrew species in areas near human habitations and screened them for hantavirus and arenavirus RNA. (thefreelibrary.com)
  • Rodent-borne pathogens like hantaviruses and arenaviruses are simple, but resourceful, and very successful at propagating. (uvm.edu)
  • Arenaviruses are one of the most neglected tropical pathogens. (emory.edu)
  • A research team from several institutions being led by the University of California San Diego has deciphered a key component behind a rising epidemic of pathogens that the World Health Organization (WHO) recently added to its list of critical emerging diseases. (news-medical.net)
  • A growing number of arenaviruses can cause a devastating viral hemorrhagic fever (VHF) syndrome. (pubmedcentralcanada.ca)
  • In 2008, a highly fatal outbreak of HF in Johannesburg was attributed to a previously unknown arenavirus , dubbed the Lujo virus (i. (thefreedictionary.com)
  • Intensive laboratory investigation attributed the outbreak to a novel arenavirus , dubbed 'Lujo' (i. (thefreedictionary.com)
  • The diseases derived from arenaviruses range in severity. (wikipedia.org)
  • When symptomatic, they generally begin with a minor nonspecific flu-like illness that may evolve to one of a few syndromes (see table Arbovirus, Arenavirus, and Filovirus Diseases ). (merckmanuals.com)
  • The Centre for Disease Control estimates that arenavirus diseases, such as Lassa Fever, kill an estimated 5,000 people each year, mostly in the developing world. (healthcanal.com)
  • Dr. Peters tells us of his background in medicine and how he started to work in some very remote parts of the world in tracking down diseases that are the stuff of nightmares. (historyofvaccines.org)
  • The virions are enveloped and include nonequimolar amounts of each genomic RNA species, designated L and S, coding for four ORFs (N, GPC, L, and Z). The arenavirus Junín (JUNV) is the etiological agent of Argentine Hemorrhagic Fever, an acute disease with high mortality rate. (hindawi.com)
  • Junín virus (JUNV) is a South American arenavirus, the etiological agent of a severe endemo-epidemic disease called Argentine Hemorrhagic Fever (AHF). (hindawi.com)
  • In 1949, Haldane [ 1 ] made the observation that sickle cell anaemia, thalassaemias and other blood cell disorders were prominent in malaria-endemic regions of the world. (royalsocietypublishing.org)
  • Bulletin of the World Health Organization, 52 (‎4-6)‎, 409 - 419. (who.int)
  • World Health Organization (WHO). (eurosurveillance.org)
  • He has consulted intensively for multiple U.S. organizations including NASA, Ministries of Health, and the World Health Organization. (cdc.gov)
  • The goal of this article is to review the recent advances in developing laboratory diagnostic assays based on recombinant viral proteins for the diagnosis of VHFs and epidemiological studies on the VHFs caused by arenaviruses. (mdpi.com)
  • The group now reports in the journal Cell Reports Medicine that the combination of two different arenaviruses produced promising results in animal experiments. (bionity.com)
  • Detection of novel divergent arenaviruses in boid snakes with inclusion body disease in the Netherlands. (springer.com)
  • Public health concerns posed by human pathogenic arenaviruses are aggravated by the lack of licensed vaccines and current therapy being limited to the use of the nucleoside analog ribavirin (Rib) that can cause significant side effects and requires an early and i.v. administration for optimal efficacy ( 3 ). (pnas.org)
  • Flexal mammarenavirus (also known as the Flexal virus or FLEV, and previously known by the laboratory code BeAn 293022) is a mammarenavirus: an arenavirus with a mammalian host. (wikipedia.org)
  • Likewise, several New World arenaviruses, chiefly Junin virus, cause viral HF disease ( 3 ). (pnas.org)
  • however, it is classified as an Old World virus. (thefreedictionary.com)
  • Seoul virus in black and Norway rats worldwide) and arenaviruses (e.g. (thefreelibrary.com)
  • The 3 sequences cluster with Mobala virus (80% bootstrap support), an arenavirus discovered in Praomys sp. (thefreelibrary.com)
  • Last Wednesday, the Minister of Health, Gabriela Monta o, reported that the virus that caused the death of two people and left in critical condition two doctors is the arenavirus. (flutrackers.com)
  • Structural basis for receptor recognition by New World hemorrhagic fever arenaviruses. (springer.com)
  • 6%, which would fall very close to the proposed cut off between species and strains for other arenavirus genotypes (Garcia et al. (thefreedictionary.com)
  • Most arenaviruses seem to be restricted to a single rodent species or even sub-species [ 14 , 15 ] suggesting adaptation to those specific hosts. (biomedcentral.com)
  • A total of 201 small mammals from 6 species were screened for arenaviruses and hantaviruses (Table). (thefreelibrary.com)
  • Some hosts, such as the rodent species carrying several of the New World arenaviruses, live in geographically restricted areas. (medic8.com)
  • Researchers analyzed DNA samples taken from boas and pythons and identified two strains of DNA that belonged to the arenavirus family that did not look like your ordinary arenaviruses. (medicaldaily.com)
  • Specific members of the order Rodentia are the principal hosts of the arenaviruses, for which natural host relationships have been well characterized. (cdc.gov)
  • In addition to the recognized arenavirus hosts, other Texas rodent genera (Onychomys, Baiomys, Peromyscus, Dipodomys, and Chaetodipus) have tested positive for arenavirus antibodies (Milazzo et al. (thefreedictionary.com)
  • Since the subject of arenaviruses was visited by Current Topics in Microbiology and Immunology 14 years ago, enormous advances have been made in this area. (worldcat.org)
  • Here, we describe efforts to produce cross-reactive monoclonal antibodies that bind to both New and Old World arenaviruses. (omictools.com)
  • Sandwich antigen-capture (Ag-capture) ELISAs using these mAbs as capture antibodies were developed and confirmed to be sensitive and specific for detecting the respective arenavirus NPs. (mdpi.com)
  • Monoclonal antibodies specific for these arenavirus proteins also reacted with the three CHV antigens. (elsevier.com)
  • It contains two groups ARENAVIRUSES, OLD WORLD and ARENAVIRUSES, NEW WORLD, which are distinguished by antigenic relationships and geographic distribution. (umassmed.edu)
  • Fine mapping of a peptide sequence containing an antigenic site conserved among arenaviruses. (semanticscholar.org)
  • Unbiased, high-throughput sequencing with the 454 Sequencing system revealed the presence of a previously undiscovered Old World arenavirus. (pressebox.com)
  • These two DDX3-dependent arenavirus exploitation strategies were previously undiscovered. (news-medical.net)