Actinomyces: A genus of gram-positive, rod-shaped bacteria whose organisms are nonmotile. Filaments that may be present in certain species are either straight or wavy and may have swollen or clubbed heads.Actinomyces viscosus: A species of ACTINOMYCES found in the oral cavity of man and hamsters. It has been isolated from actinomycotic lesions in swine, cats, and dogs and has been identified as a causative agent of animal diseases.Actinomycosis: Infections with bacteria of the genus ACTINOMYCES.Streptococcus sanguis: A gram-positive organism found in dental plaque, in blood, on heart valves in subacute endocarditis, and infrequently in saliva and throat specimens. L-forms are associated with recurrent aphthous stomatitis.Dental Plaque: A film that attaches to teeth, often causing DENTAL CARIES and GINGIVITIS. It is composed of MUCINS, secreted from salivary glands, and microorganisms.Hydroxyapatites: A group of compounds with the general formula M10(PO4)6(OH)2, where M is barium, strontium, or calcium. The compounds are the principal mineral in phosphorite deposits, biological tissue, human bones, and teeth. They are also used as an anticaking agent and polymer catalysts. (Grant & Hackh's Chemical Dictionary, 5th ed)Mouth: The oval-shaped oral cavity located at the apex of the digestive tract and consisting of two parts: the vestibule and the oral cavity proper.Nostrums: Medicines whose effectiveness is unproven and whose ingredients are often secret.Microbial Sensitivity Tests: Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).Quackery: The fraudulent misrepresentation of the diagnosis and treatment of disease.Anti-Bacterial Agents: Substances that reduce the growth or reproduction of BACTERIA.Drug Resistance, Bacterial: The ability of bacteria to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS).Drug Resistance, Microbial: The ability of microorganisms, especially bacteria, to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS).Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.United States Virgin Islands: A group of islands in the Lesser Antilles in the West Indies, the three main islands being St. Croix, St. Thomas, and St. John. The capital is Charlotte Amalie. Before 1917 the U.S. Virgin Islands were held by the Danish and called the Danish West Indies but the name was changed when the United States acquired them by purchase.Disasters: Calamities producing great damage, loss of life, and distress. They include results of natural phenomena and man-made phenomena. Normal conditions of existence are disrupted and the level of impact exceeds the capacity of the hazard-affected community.Seasons: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Communicable DiseasesFamily Practice: A medical specialty concerned with the provision of continuing, comprehensive primary health care for the entire family.Practice Guidelines as Topic: Directions or principles presenting current or future rules of policy for assisting health care practitioners in patient care decisions regarding diagnosis, therapy, or related clinical circumstances. The guidelines may be developed by government agencies at any level, institutions, professional societies, governing boards, or by the convening of expert panels. The guidelines form a basis for the evaluation of all aspects of health care and delivery.Infectious Disease Medicine: A branch of internal medicine concerned with the diagnosis and treatment of INFECTIOUS DISEASES.Streptomyces: A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.Streptococcus: A genus of gram-positive, coccoid bacteria whose organisms occur in pairs or chains. No endospores are produced. Many species exist as commensals or parasites on man or animals with some being highly pathogenic. A few species are saprophytes and occur in the natural environment.Streptococcus pyogenes: A species of gram-positive, coccoid bacteria isolated from skin lesions, blood, inflammatory exudates, and the upper respiratory tract of humans. It is a group A hemolytic Streptococcus that can cause SCARLET FEVER and RHEUMATIC FEVER.Streptococcus mutans: A polysaccharide-producing species of STREPTOCOCCUS isolated from human dental plaque.Streptococcus pneumoniae: A gram-positive organism found in the upper respiratory tract, inflammatory exudates, and various body fluids of normal and/or diseased humans and, rarely, domestic animals.Streptococcus agalactiae: A bacterium which causes mastitis in cattle and occasionally in man.Acid-Base Equilibrium: The balance between acids and bases in the BODY FLUIDS. The pH (HYDROGEN-ION CONCENTRATION) of the arterial BLOOD provides an index for the total body acid-base balance.Biofilms: Encrustations, formed from microbes (bacteria, algae, fungi, plankton, or protozoa) embedding in extracellular polymers, that adhere to surfaces such as teeth (DENTAL DEPOSITS); PROSTHESES AND IMPLANTS; and catheters. Biofilms are prevented from forming by treating surfaces with DENTIFRICES; DISINFECTANTS; ANTI-INFECTIVE AGENTS; and antifouling agents.Periodontal Diseases: Pathological processes involving the PERIODONTIUM including the gum (GINGIVA), the alveolar bone (ALVEOLAR PROCESS), the DENTAL CEMENTUM, and the PERIODONTAL LIGAMENT.Dental Caries: Localized destruction of the tooth surface initiated by decalcification of the enamel followed by enzymatic lysis of organic structures and leading to cavity formation. If left unchecked, the cavity may penetrate the enamel and dentin and reach the pulp.Oxygen: An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.Agglutinins: Substances, usually of biological origin, that cause cells or other organic particles to aggregate and stick to each other. They include those ANTIBODIES which cause aggregation or agglutination of particulate or insoluble ANTIGENS.Receptors, Scavenger: A large group of structurally diverse cell surface receptors that mediate endocytic uptake of modified LIPOPROTEINS. Scavenger receptors are expressed by MYELOID CELLS and some ENDOTHELIAL CELLS, and were originally characterized based on their ability to bind acetylated LOW-DENSITY LIPOPROTEINS. They can also bind a variety of other polyanionic ligand. Certain scavenger receptors can internalize micro-organisms as well as apoptotic cells.Scavenger Receptors, Class B: A family of scavenger receptors that are predominately localized to CAVEOLAE of the PLASMA MEMBRANE and bind HIGH DENSITY LIPOPROTEINS.Receptors, Pattern Recognition: A large family of cell surface receptors that bind conserved molecular structures (PAMPS) present in pathogens. They play important roles in host defense by mediating cellular responses to pathogens.Receptors, Immunologic: Cell surface molecules on cells of the immune system that specifically bind surface molecules or messenger molecules and trigger changes in the behavior of cells. Although these receptors were first identified in the immune system, many have important functions elsewhere.Zona Pellucida: A tough transparent membrane surrounding the OVUM. It is penetrated by the sperm during FERTILIZATION.Nelson Syndrome: A syndrome characterized by HYPERPIGMENTATION, enlarging pituitary mass, visual defects secondary to compression of the OPTIC CHIASM, and elevated serum ACTH. It is caused by the expansion of an underlying ACTH-SECRETING PITUITARY ADENOMA that grows in the absence of feedback inhibition by adrenal CORTICOSTEROIDS, usually after ADRENALECTOMY.Bone Regeneration: Renewal or repair of lost bone tissue. It excludes BONY CALLUS formed after BONE FRACTURES but not yet replaced by hard bone.Tooth: One of a set of bone-like structures in the mouth used for biting and chewing.Bone Marrow Cells: Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells.LondonBone Marrow: The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells.Jaw: Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.Material Safety Data Sheets: Information or data used to ensure the safe handling and disposal of substances in the workplace. Such information includes physical properties (i.e. melting, boiling, flashing points), as well as data on toxicity, health effects, reactivity, storage, disposal, first-aid, protective equipment, and spill-handling procedures.Hazardous Substances: Elements, compounds, mixtures, or solutions that are considered severely harmful to human health and the environment. They include substances that are toxic, corrosive, flammable, or explosive.Occupational Exposure: The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.Colorectal Neoplasms: Tumors or cancer of the COLON or the RECTUM or both. Risk factors for colorectal cancer include chronic ULCERATIVE COLITIS; FAMILIAL POLYPOSIS COLI; exposure to ASBESTOS; and irradiation of the CERVIX UTERI.Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Dehydration: The condition that results from excessive loss of water from a living organism.Uranium Compounds: Inorganic compounds that contain uranium as an integral part of the molecule.Adenoma: A benign epithelial tumor with a glandular organization.Proteomics: The systematic study of the complete complement of proteins (PROTEOME) of organisms.
Addition of antibacterial agents to MMA-TBB dentin bonding systems--influence on tensile bond strength and antibacterial effect. (1/19)
To produce a bonding system which has both high bond strength and antibacterial properties, an antibacterial agent (vancomycin: VCM or metronidazol: MN) was added to the PMMA powder of 4-META/MMA-TBB resin (CB). The influence of the addition of an antibacterial agent on tensile bond strength to dentin and the antibacterial effect were investigated in this study. Forty-seven freshly extracted bovine first or second incisors were used to measure the tensile bond strength to dentin. The bond strengths to bovine dentin were not significantly decreased by addition of VCM (1%, 2%, 5%), or MN (1%) to CB (p < 0.05). The antibacterial effect of CB containing antibacterial agent on six strains of bacteria was investigated by the agar plate diffusion method, analyzing the appearance of the inhibition zone around a resin disk following anaerobic culturing. The resin disks containing VCM showed antibacterial effects on all of the strains examined; the widths of the inhibition zones were 4-15 mm. The resin disks containing MN showed antibacterial effects on three strains; the widths of the inhibition zones were 0-4 mm. It was thus possible to produce a bonding system with both antibacterial effect and high tensile bond strength by addition of VCM to PMMA powder. (+info)Different type 1 fimbrial genes and tropisms of commensal and potentially pathogenic Actinomyces spp. with different salivary acidic proline-rich protein and statherin ligand specificities. (2/19)
Actinomyces spp. exhibit type 1 fimbria-mediated adhesion to salivary acidic proline-rich proteins (PRPs) and statherin ligands. Actinomyces spp. with different animal and tissue origins belong to three major adhesion types as relates to ligand specificity and type 1 fimbria genes. (i) In preferential acidic-PRP binding, strains of Actinomyces naeslundii genospecies 1 and 2 from human and monkey mouths displayed at least three ligand specificities characterized by preferential acidic-PRP binding. Slot blot DNA hybridization showed seven highly conserved type 1 fimbria genes (orf1- to -6 and fimP) in genospecies 1 and 2 strains, except that orf5 and orf3 were divergent in genospecies 1. (ii) In preferential statherin binding, oral Actinomyces viscosus strains of rat and hamster origin (and strain 19246 from a human case of actinomycosis) bound statherin preferentially. DNA hybridization and characterization of the type 1 fimbria genes from strain 19246 revealed a homologous gene cluster of four open reading frames (orfA to -C and fimP). Bioinformatics suggested sortase (orfB, orf4, and part of orf5), prepilin peptidase (orfC and orf6), fimbria subunit (fimP), and usher- and autotransporter-like (orfA and orf1 to -3) functions. Those gene regions corresponding to orf3 and orf5 were divergent, those corresponding to orf2, orf1, and fimP were moderately conserved, and those corresponding to orf4 and orf6 were highly conserved. Restriction fragment length polymorphism analyses using a fimP probe separated human and monkey and rat and hamster strains into phylogenetically different groups. (iii) In statherin-specific binding, strains of A. naeslundii genospecies 1 from septic and other human infections displayed a low-avidity binding to statherin. Only the orf4 and orf6 gene regions were highly conserved. Finally, rat saliva devoid of statherin bound bacterial strains avidly irrespective of ligand specificity, and specific antisera detected either type 1, type 2, or both types of fimbria on the investigated Actinomyces strains. (+info)Isolation and characterization of Actinomyces viscosus mutants defective in binding salivary proline-rich proteins. (3/19)
Recent studies have provided evidence for human salivary proline-rich proteins (PRPs) serving as potential receptors in the acquired pellicle for Actinomyces viscosus type 1 fimbriae. We report here the isolation of mutants derived from A. viscosus T14V-J1 which are defective in binding to PRPs partially purified from parotid gland saliva. Mutagenesis with ethyl methanesulfonate preceded enrichment for cells nonreactive with PRPs by successive adsorptions with PRP-treated latex beads. Screening was accomplished by random selection of 250 isolated colonies from each of four enrichment cycles and reaction with PRP-treated latex beads in microtiter plates. Two mutants of independent origin were examined for adherence to hydroxyapatite treated with either PRPs, proline-rich glycoproteins, deglycosylated proline-rich glycoproteins, or whole saliva. Additional surface properties that were examined included agglutination with polyclonal antisera to type 1 and type 2 fimbriae, agglutination by a monoclonal antibody to type 1 fimbriae that inhibits adherence of the parent strain to saliva-treated hydroxyapatite, the ability to bind monoclonal antibody to the type 1 fimbrial subunit, and lactose-reversible coaggregation with Streptococcus sanguis 34. Both mutants exhibited reduced binding to hydroxyapatite treated with whole saliva or salivary protein preparations but were still capable of reaction with antiserum to type 1 and type 2 fimbriae. In addition, these mutants possessed the ability to bind monoclonal antibody to the type 1 fimbrial subunit in amounts comparable to the amount bound by the parent strain but were not agglutinated by the adherence-inhibiting monoclonal antibody. When considered with previously published data, these results suggest that an adhesive molecule is probably associated with type 1 fimbriae and allows for the interaction of A. viscosus with constituents in the salivary pellicle. (+info)Effects of cecropin-XJ on growth and adherence of oral cariogenic bacteria in vitro. (4/19)
BACKGROUND: Cecropin-XJ belongs to cecropin-B, which is the most potent antibacterial peptide found naturally. The aim of this study was to investigate the effects of cecropin-XJ on growth and adherence of oral cariogenic bacteria. METHODS: Four oral cariogenic bacteria (Streptococcus mutans, Lactobacillus acidophilus, Actinomyces viscosus and Actinomyces naeslundii) were chosen for this experiment. The minimal inhibitory concentrations (MICs) and reductive percent of bacterial growth were used to assay the antibacterial activity of cecropin-XJ. Mammalian cytotoxicity of cecropin-XJ was tested with human periodontal membrane fibroblasts by tetrazolium (MTT) colorimetric assay. The bacterial morphological changes induced by cecropin-XJ were examined on scanning electron microscope (SEM). The influence of cecropin-XJ on bacterial adhesion to saliva-coated hydroxyapatite (S-HA) was measured by scintillation counting. RESULTS: The MICs of cecropin-XJ for inhibition of the growth of four bacteria ranged from 4.0 to 42.8 micromol/L with the highest susceptible to A. naeslundii and the lowest susceptible to L. acidophilus. At pH 6.8, 5.5 and 8.2, 1/2 MIC of cecropin-XJ reduced the number of viable bacteria by 40.9%, 67.8% and 32.8% for S. mutans and by 28.1%, 57.2% and 37.9% for L. acidophilus. The activities against S. mutans and L. acidophilus increased at pH 5.5 compared with pH 6.8 (P < 0.01, respectively). In present of 50% saliva, 1/2 MIC of the peptide decreased the direct count of viable cells by 29.2% and 14.4% for S. mutans and L. acidophilus, respectively (P < 0.01 and P > 0.05, respectively), whereas almost no reduction counts were detected in the presence of 20% serum for both bacteria (P > 0.05, respectively). Mammalian cytotoxicity of cecropin-XJ from 1.0 to 100 micromol/L exhibited no cytotoxicity against human periodontal membrane fibroblasts (P > 0.05). Bacterial morphological changes induced by MIC of cecropin-XJ examined on SEM showed cell surface disruption. Furthermore, the ability of A. naeslundii adhesion to S-HA decreased significantly with MIC of cecropin-XJ for 10 and 20 minutes (P = 0.001 and 0.000, respectively), and S. mutans, A. viscosus to S-HA decreased significantly with MIC of cecropin-XJ for 20 minutes (P = 0.000, respectively). CONCLUSIONS: Cecropin-XJ exhibited bactericidal action against cariogenic pathogens, and the antibacterial activity enhanced in the acid environment. The results also demonstrate that cecropin-XJ prevents S. mutans and actinomyces adsorption to S-HA. These findings suggest that Cecropin-XJ may have potential to prevent caries. (+info)Immunochemical and functional studies of Actinomyces viscosus T14V type 1 fimbriae with monoclonal and polyclonal antibodies directed against the fimbrial subunit. (5/19)
Each of five monoclonal antibodies (mAbs) prepared against the type 1 fimbriae of Actinomyces viscosus T14V reacted with a 54 kDa cloned protein previously identified as a fimbrial subunit. This purified protein completely inhibited the reaction of a specific anti-type-1-fimbria rabbit antibody with A. viscosus whole cells. Maximum values for the number of antibody molecules bound per bacterial cell ranged from 7 x 10(3) to 1.2 x 10(4) for the different 125I-labelled mAbs and was approximately 7 x 10(4) for 125I-labelled rabbit IgG or Fab against either type 1 fimbriae or the 54 kDa cloned protein. Although the different mAbs, either individually or as a mixture, failed to inhibit the type-1-fimbria-mediated adherence of A. viscosus T14V to saliva-treated hydroxyapatite, each rabbit antibody gave 50% inhibition of adherence when approximately 5 x 10(4) molecules of IgG were bound per cell. However, binding of each corresponding rabbit Fab had no significant effect on bacterial attachment unless much higher concentrations were used. These findings suggest that antibodies directed solely against the 54 kDa fimbrial subunit do not react with the putative receptor binding sites of A. viscosus T14V type 1 fimbriae. Instead, inhibition of attachment by the polyclonal antibodies may depend on an indirect effect of antibody binding that prevents the fimbria-receptor interaction. (+info)Tyrosine sulfation of statherin. (6/19)
Tyrosylprotein sulfotransferase (TPST), responsible for the sulfation of a variety of secretory and membrane proteins, has been identified and characterized in submandibular salivary glands (William et al. Arch Biochem Biophys 1997; 338: 90-96). In the present study we demonstrate the sulfation of a salivary secretory protein, statherin, by the tyrosylprotein sulfotransferase present in human saliva. Optimum statherin sulfation was observed at pH 6.5 and at 20 mm MnCl(2). Increase in the level of total sulfation was observed with increasing statherin concentration. The K(m)value of tyrosylprotein sulfotransferase for statherin was 40 microM. Analysis of the sulfated statherin product on SDS-polyacrylamide gel electrophoresis followed by autoradiography revealed (35)S-labelling of a 5 kDa statherin. Further analysis of the sulfated statherin revealed the sulfation on tyrosyl residue. This study is the first report demonstrating tyrosine sulfation of a salivary secretory protein. The implications of this sulfation of statherin in hydroxyapatite binding and Actinomyces viscosus interactions are discussed. (+info)Activity of an antimicrobial peptide mimetic against planktonic and biofilm cultures of oral pathogens. (7/19)
Antimicrobial peptides (AMPs) are naturally occurring, broad-spectrum antimicrobial agents that have recently been examined for their utility as therapeutic antibiotics. Unfortunately, they are expensive to produce and are often sensitive to protease digestion. To address this problem, we have examined the activity of a peptide mimetic whose design was based on the structure of magainin, exhibiting its amphiphilic structure. We demonstrate that this compound, meta-phenylene ethynylene (mPE), exhibits antimicrobial activity at nanomolar concentrations against a variety of bacterial and Candida species found in oral infections. Since Streptococcus mutans, an etiological agent of dental caries, colonizes the tooth surface and forms a biofilm, we quantified the activity of this compound against S. mutans growing under conditions that favor biofilm formation. Our results indicate that mPE can prevent the formation of a biofilm at nanomolar concentrations. Incubation with 5 nM mPE prevents further growth of the biofilm, and 100 nM mPE reduces viable bacteria in the biofilm by 3 logs. Structure-function analyses suggest that mPE inhibits the bioactivity of lipopolysaccharide and binds DNA at equimolar ratios, suggesting that it may act both as a membrane-active molecule, similar to magainin, and as an intracellular antibiotic, similar to other AMPs. We conclude that mPE and similar molecules display great potential for development as therapeutic antimicrobials. (+info)Isolation of a neuraminidase gene from Actinomyces viscosus T14V. (8/19)
A genomic library of Actinomyces viscosus T14V DNA in lambda gt11 was screened for expression of neuraminidase activities. Four recombinant clones were detected that gave blue fluorescence upon incubation with a fluorogenic substrate, 2'-(4-methylumbelliferyl)-alpha-D-N-acetylneuraminic acid. Of these, two were identical, and all of the neuraminidase-positive clones shared a common 3.4-kbp DNA region. Expression of the enzyme activities in Escherichia coli carrying the cloned DNA was independent of the lacZ promoter of the vector. Maxicell analysis revealed that the 3.4-kbp DNA insert directed synthesis of a protein with an apparent molecular mass of 100,000 Da. The protein from cell extracts of E. coli clones migrated as a single band that stained for enzyme activity after electrophoresis in a nondissociating polyacrylamide gel. Moreover, human erythrocytes incubated previously with cell lysates from neuraminidase-positive E. coli were hemagglutinated by Actinomyces spp. The enzyme expressed by E. coli was active on substrates containing alpha-2,3 and alpha-2,6 ketosidic linked sialyl residues. Similar substrate specificities were obtained for both the extracellular and cell-associated neuraminidases from A. viscosus T14V. The 3.4-kbp insert hybridized to DNA fragments in a Southern blot containing A. viscosus T14V chromosomal DNA that had been digested with various restriction endonucleases. Data from hybridization studies show that A. viscosus T14V contains a single copy of the neuraminidase gene. (+info)A number of types of bacteria, such as Actinomyces viscosus and A. naeslundii, live in the mouth, where they are part of a ... Anaerobic bacteria in the oral cavity include: Actinomyces, Arachnia, Bacteroides, Bifidobacterium, Eubacterium, Fusobacterium ...
Actinomyces MeSH B03.510.024.049.050.050.050 --- Actinomyces viscosus MeSH B03.510.024.049.050.525 --- Mobiluncus MeSH B03.510. ... Actinomyces MeSH B03.510.460.400.400.049.049.178.800 --- Actinomyces viscosus MeSH B03.510.460.400.400.049.049.589 --- ...
... naes.undii serotypes II and III and Actinomyces viscosus serotype II and A. naeslundii Genospecies 2" (PDF). International ... Actinomyces gerencseriae is a species in the genus Actinomyces once known as Actinomyces israelii serovar II. A. gerencseriae ... Type strain of Actinomyces gerencseriae at BacDive - the Bacterial Diversity Metadatabase Type strain of Actinomyces ... Johnson, J L; Moore, Lillian H; Kaneko, Beverly; Moore, W E C (July 1990). "Actinomyces georgiae sp.no., Actinomyces ...
... naeslundii serotypes II and III and Actinomyces viscosus serotype II in A. naeslundii Genospecies 2". International Journal of ... Actinomyces georgiae is a species in the genus of Actinomyces. It is a part of the human periodontal flora. Johnson, J. L.; ... Actinomyces georgiae at the Encyclopedia of Life LPSN Type strain of Actinomyces georgiae at BacDive - the Bacterial Diversity ... nov., Actinomyces gerencseriae sp. nov., Designation of Two Genospecies of Actinomyces naeslundii, and Inclusion of A. ...
"Oral bacterium - Actinomyces viscosus". Dennis Kunkel Microscopy, Inc. Retrieved 19 December 2015. "Actinomyces viscosus. (n.d ... Actinomyces viscosus is a human and animal pathogen/pathobiont which colonises the mouths of 70% of adult humans. A. viscosus ... A. viscosus infection symptoms are indistinguishable from Actinomyces israelii infection symptoms or Actinomyces bovis ... "Actinomyces viscosus". RightDiagnosis.com. Retrieved 19 December 2015. Mardis, JS; Many, WJ Jr (February 2001). "Endocarditis ...
None of these displayed activity against A. actinomycetemcomitans, while four of the others were active against A. viscosus and ... exhibited antibacterial activity against Streptococcus mutans and Actinomyces naeslundii while another (Sagittine E) was only ...
Actinomyces viscosus, Nocardia spp., dan Streptococcus mutans. Contoh bakteri dapat diambil pada plak. ...
"Oral bacterium - Actinomyces viscosus". Dennis Kunkel Microscopy, Inc. Retrieved 19 December 2015. "Actinomyces viscosus. (n.d ... Actinomyces viscosus is a human and animal pathogen/pathobiont which colonises the mouths of 70% of adult humans. A. viscosus ... A. viscosus infection symptoms are indistinguishable from Actinomyces israelii infection symptoms or Actinomyces bovis ... "Actinomyces viscosus". RightDiagnosis.com. Retrieved 19 December 2015. Mardis, JS; Many, WJ Jr (February 2001). "Endocarditis ...
Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces viscosus is a filamentous soil ... Actinomyces viscosus bacteria. Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces ... Keywords: actinobacteria, actinomyces viscosus, actinomyces viscosus bacteria, bacteria, bacterial, bacteriology, bacterium, ... viscosus is a filamentous soil bacterium, classified in the Actinobacteria.. Release details: Model release not required. ...
Actinomyces viscosus. Actinomyces viscosus is a Gram-positive, anaerobic, filamentous bacterium that is part of the human oral ... Coloured scanning electron micrograph (SEM) of Oral bacterium, Actinomyces viscosus. Actinomyces viscosus is a Gram-positive, ... Actinomyces sp. normally are soil or aquatic fungi feeding off decaying matter (saprophytes). They resemble fungi and form ...
What is Actinomyces viscosus? Meaning of Actinomyces viscosus medical term. What does Actinomyces viscosus mean? ... Looking for online definition of Actinomyces viscosus in the Medical Dictionary? Actinomyces viscosus explanation free. ... Actinomyces naeslundii, Actinomyces odontolyticus, and Actinomyces viscosus. (1,2) A odontolyticus and A viscosus are more ... Actinomyces viscosus. Also found in: Dictionary, Thesaurus, Encyclopedia.. Related to Actinomyces viscosus: Aggregatibacter ...
Find out information about Actinomyces viscosus. The type genus of the family Actinomycetaceae; anaerobic to facultatively ... includes human and animal pathogens Explanation of Actinomyces viscosus ... Actinomyces. (redirected from Actinomyces viscosus). Also found in: Dictionary, Thesaurus, Medical.. Related to Actinomyces ... Actinomyces viscosus , Article about Actinomyces viscosus by The Free Dictionary https://encyclopedia2.thefreedictionary.com/ ...
... low responsiveness in the IgG response of mice to the complex protein antigen type 1 fimbriae from Actinomyces viscosus T14V.. ... low responsiveness in the IgG response of mice to the complex protein antigen type 1 fimbriae from Actinomyces viscosus T14V. ... low responsiveness in the IgG response of mice to the complex protein antigen type 1 fimbriae from Actinomyces viscosus T14V. ... low responsiveness in the IgG response of mice to the complex protein antigen type 1 fimbriae from Actinomyces viscosus T14V. ...
Mechanism of coaggregation between Actinomyces viscosus T14V and Streptococcus sanguis 34.. F C McIntire, A E Vatter, J Baros, ... Mechanism of coaggregation between Actinomyces viscosus T14V and Streptococcus sanguis 34.. F C McIntire, A E Vatter, J Baros, ... Mechanism of coaggregation between Actinomyces viscosus T14V and Streptococcus sanguis 34.. F C McIntire, A E Vatter, J Baros, ... Mechanism of coaggregation between Actinomyces viscosus T14V and Streptococcus sanguis 34. Message Subject (Your Name) has ...
Find details on Actinomyces viscosus in cats including diagnosis and symptoms, active forms, resting forms, clinical effects, ... Murakami S, Yamanishi M W, Azuma R (1997) Lymph node abscess due to Actinomyces viscosus in a cat. J Vet Med Sci 59 (11), 1079- ... L: viscum- bird-lime; viscosus- sticky.. Active Forms. This article is available in full to registered subscribers Sign up now ... A. viscosus infections respond well to penicillin Benzylpenicillin and other antibiotics Therapeutics: antimicrobial drug, ...
Construction and use of integration plasmids to generate site-specific mutations in the Actinomyces viscosus T14V chromosome.. ... Stable transformants of Actinomyces viscosus T14V carrying heterologous DNA were obtained with the aid of integration plasmids ... Construction and use of integration plasmids to generate site-specific mutations in the Actinomyces viscosus T14V chromosome. ... Construction and use of integration plasmids to generate site-specific mutations in the Actinomyces viscosus T14V chromosome. ...
Actinomyces viscosus (Howell et al.) Georg et al. (ATCC® 15987™) ATCC® Number: 15987™ Deposited As Odontomyces viscosus Howell ...
PROSTHETIC JOINT INFECTION WITH ACTINOMYCES VISCOSUS. Cohen, Oren J.; Keiser, John; Pollner, Jane; More ...
... ... and Actinomyces viscosus ATCC® 15987™ (MicroBioLogics Inc., USA) was investigated. Methods: Identification of geographic and ... Results: EEP exerted various degrees of antibacterial activity against S. mutans and A. viscosus, depending on the geographic ... viscosus (MIC 0.11 mg/mL - MBC 0.93 mg/mL). Conclusions: The combined results from all methods indicated that S. mutans is more ...
Actinomyces viscosus Isolation from the Skin of a Cat Koenhemsi L., Sigirci B.D... ...
Actinomyces odontolyticus. 0. 1. 0. 1. 0. 0. 1. 1. Actinomyces viscosus. 1. 0. 0. 1. 0. 0. 1. 1. ... The number of Actinomyces israelii and Actinomyces naeslundii isolates in the control group was significantly higher in the ... The presence of Actinomyces spp. together with Actinomyces israelii, Capnocytophaga spp., Fusobacterium spp., Bacteroides spp. ... In our own study, a microflora of similar composition was isolated from the study subjects, while the number of Actinomyces spp ...
Actinomyces viscosus in the mandibular approximal site; Strep. mutans, Veillonella sp. and Lactobacillus sp. in the maxillary ...
Actinomyces viscosus Gram positive, high G+C. GAGAGTTNNATCCTGGCTCAGGACGAANGCTNGCGGC GT GC T TAACACATGCAA-GTC. ... Actinomyces gerencseriae ATCC 23860. Gram positive, high G+C. + Actinomyces odontolyticus ATCC 17929. Gram positive, high G+C. ... Actinomyces naeslundii genosp. 1 ATCC 12104. Gram positive, high G+C. + Actinomyces naeslundii genosp. 2 WVU 627. Gram positive ... Actinomyces israelii ATCC 12102, ATCC 10048, MTU 01003, MTU 01004. Gram positive, high G+C. +. ...
Streptococcus sanguis and Actinomyces viscosus. Arch. Oral Biol. 24:53-61. ... Many oral streptococci and certain Actinomyces spp. also produce fructosyltransferase (FTF) enzymes that convert sucrose into ... effective substrate for generation of organic acids via glycolysis by the abundant oral streptococci and Actinomyces spp. that ...
Scarano FJ, Ruddat MS, Robinson A. Actinomyces viscosus postoperative endophthalmitis. Diagn Microbiol Infect Dis. 1999 Jun. 34 ... Disseminated Actinomyces meyeri infection resembling lung cancer with brain metastases. Am J Med Sci. 2003 Sep. 326(3):152-5. [ ... Hall V. Actinomyces--gathering evidence of human colonization and infection. Anaerobe. 2008 Feb. 14(1):1-7. [Medline]. ... Actinomyces and related organisms in human infections. Clin Microbiol Rev. 2015 Apr. 28 (2):419-42. [Medline]. ...
Actinomyces viscosus bacteria. Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces ...
Isolation of Wolinella recta and Actinomyces viscosus from an actinomycotic chest wall mass. J. Clin. Microbiol. 20: 1187-1189. ...
In concentration of 0.1 g/mL of Satureja plant, Actinomyces viscosus, Streptococcus sanguinis, Enterococcus faecalis, and ... and Actinomyces viscosus. We also used the disk diffusion test and broth microdilution method to evaluate the antimicrobial ...
Membrane ATPases and acid tolerance ofActinomyces viscosus andLactobacillus casei. Appl Environ Microbiol 53: 2124-2128.PubMed ... 1990 Tetrameric manganese superoxide dismutases from anaerobicActinomyces. Arch Biochem Biophys 280: 192-200.PubMedGoogle ...
Actinomyces viscosus, Lactobacillus casei (Zac (oAaciBttscasei), Streptococcus oralis ora / is), Fusobacterium nucleatum (/ ...
Oral compositions comprising actinomyces viscosus fimbriae EP0776163A1 (en) * 1994-09-09. 1997-06-04. University Of Maryland. ... Oral compositions comprising actinomyces viscosus fimbriae EP0776163A4 (en) * 1994-09-09. 1999-11-24. Univ Maryland. ... The S. mutans and other acid producing bacteria such as Lactobacillae and Actinomyces sp and various anaerobic bacteria can act ...
Actinomyces israelii, Actinomyces naeslundii, Actinomyces odontolyticus, Actinomyces viscosus, and Actinomyces meyeri most ... these include Actinomyces neuii, [1] Actinomyces radingae, and Actinomyces turicensis. Actinomyces radicidentis, a recently ... Actinomyces species grow well in enriched media with brain-heart infusion and may be aided in growth by an atmosphere of 6-10% ... Actinomyces species that cause human disease are not found in nature but are normal flora of the oropharynx, GI tract, and ...
StreptococcusNaeslundiiIsraeliiLactobacillusBacteriaAnaerobicActinomycosisGenusBovisPeriodontalSanguisInfectionBacteriumNocardiaBacterialMeyeriInfectionsVeillonellaT14VBacillusType 1 fimbriaeStrainsCatalytic domainScanning electron mOrganismsAbscessesGerencseriaeIntrauterine deviceActinomycetesMutansCommonlyNeuiiDental cariesIdentificationAntibacterialHumansOral cavitySulfur granulesPathogen
- In our study, capsaicin was used to evaluate the antimicrobial property on the inhibition of acid producing and biofilm of Streptococcus mutans, Actinomyces viscosus , Lactobacillus and Streptococcus sanguis, which were sectional cariogenic bacteria, in order to search for new antimicrobial agents or treatment methods to cure or prevent dental caries. (thefreedictionary.com)
- Although antibacterial activity of capsaicin on Streptococcus mutans, Actinomyces viscosus , Lactobacillus and Streptococcus sanguis were proved in this study, the effects of capsaicin on internal relation among these bacteria should be lucubrated in later investigations, because that caries are not caused by single bacteria but multiple effects of various bacteria (Yu et al. (thefreedictionary.com)
- The present work selected four strains of cariogenic bacteria (Streptococcus mutans, Actinomyces viscosus , Lactobacillus and Streptococcus sanguis) as research objects. (thefreedictionary.com)
- Mechanism of coaggregation between Actinomyces viscosus T14V and Streptococcus sanguis 34. (asm.org)
- Aim: In the present study, the antibacterial activity of the Ethanol Extract of Propolis (EEP), collected from various regions (Mendoza, Santiago del Estero, and Corrientes) in Argentina, against Streptococcus mutans ATCC® 35668™ and Actinomyces viscosus ATCC® 15987™ (MicroBioLogics Inc., USA) was investigated. (unne.edu.ar)
- In contrast, little or no growth was noted for three other strains of S. sanguinis , as well as for strains of Streptococcus parasanguinis , Streptococcus salivarius , Streptococcus vestibularis , Streptococcus sobrinus , Actinomyces spp. (asm.org)
- Four species of bacteria were tested: Streptococcus mutans, Streptococcus sobrinus, Lactobacillus acidophilus, and Actinomyces viscosus. (ovid.com)
- In vitro colonisation of acrylic resin denture base materials by Streptococcus oralis and Actinomyces viscosus . (unimedizin-mainz.de)
- Furthermore, Prevotella intermedia , Treponema denticola , Actinomyces viscosus, and Streptococcus gordonii may play a keystone role in dental plaque biofilm formation and in accelerating chronic periodontitis progression [ 8 ]. (hindawi.com)
- Zones of inhibition were seen for the resin materials of Scotchbond 2 and Tripton with Streptococcus mutans, Streptococcus sanguis and Actinomyces viscosus. (quintpub.com)
- Initial colonizers like Actinomyces oris ( Aori ), Streptococcus gordonii ( Sgor ), Streptococcus sanguinis, Streptococcus oralis , and Streptococcus mitis (collectively, Ssom ) and S. oralis ( Sora ) adhere to the salivary pellicle and interact with each other (coaggregation) (stage 1). (asmscience.org)
- The following 9 oral microorganisms were used in this study: Actinomyces viscosus ATCC 15987, Porphyromonas gingivalis ATCC 53978, Staphylococcus aureus ATCC 12600, Streptococcus mutans ATCC 25175, Streptococcus sanguis ATCC 35105 and Streptococcus sobrinus ATCC 27351 from the American Type Culture Collection (Rockville, MD, USA) and Lactobacillus acidophilus KCCM 32820, Lactobacillus casei KCCM 35465 and Streptococcus salivarius KCCM 40412 from the Korean Culture Center of Microorganisms (Seoul, Korea). (thefreedictionary.com)
- METHOD: ology: 38 human single-rooted teeth were decoronated and chemo-mechanically prepared before inoculation using Enterococcus faecalis, Actinomyces viscosus, and Streptococcus mutans using a flow-cell model for 4 weeks for biofilm formation. (bvsalud.org)
- Actinomyces naeslundii genosp. (asm.org)
- Actinomyces israelii , Actinomyces naeslundii, Actinomyces odontolyticus, Actinomyces viscosus, and Actinomyces meyeri most frequently cause human actinomycosis. (medscape.com)
- Publications] N.Takahashi: 'The role of the succivate pothway on sorbital fermentation by oral Actinomyces viscusus and Actinomyces naeslundii. (nii.ac.jp)
- Publications] S.Kalfas: 'Initial catabolism sorbital in Actinomyces naeslundii and Actinomyces viscusus. (nii.ac.jp)
- A. naeslundii, A. meyeri, A. odontolyticus and A. viscosus are more rarely associated with actinomycosis Footnote 7 . (canada.ca)
- A. actinomycetemcomitans serotype b, Selenomonas noxia and Actinomyces naeslundii genospecies 2 (A. viscosus) were outliers with little relation to each other and the 5 major complexes. (nih.gov)
- Studies on the microbiology of root surface caries between 1970 and 1975 placed emphasis on Gram-positive pleomorphic filamentous rods, particularly Actinomyces viscosus and Actinomyces naeslundii. (nih.gov)
- However, it has been known for 17 years that the Actinomyces associated with the lesions may be variants of A. viscosus and A. naeslundii. (nih.gov)
- A number of types of bacteria, such as Actinomyces viscosus and A. naeslundii , live in the mouth, where they are part of a sticky substance called plaque . (bionity.com)
- Actinomyces naeslundii 1, A. viscosus, Corynebacterium matruchotii, Peptostreptococcus micros and Veillonella parvula were the species that presented the highest mean levels in all three clinical groups. (yumpu.com)
- A. viscosus infection symptoms are indistinguishable from Actinomyces israelii infection symptoms or Actinomyces bovis infection symptoms. (wikipedia.org)
- A. israelii and A. bovis infections usually cause actinomycotic infections, but sometimes and very rarely will the pathogen be A. viscosus. (wikipedia.org)
- Classical actinomycosis in humans is typically caused by Actinomyces israelii and is characterized by deep invasive abscess formation, tissue fibrosis, and draining sinuses affecting cervicofacial, thoracic, abdominopelvic areas ( 1 ). (asm.org)
- Species that may cause disease in humans, such as Actinomyces israelii (which causes actinomycosis), are normally present in the mouth and throat. (thefreedictionary.com)
- Actinomyces israelii was the only Actinomyces spp. (asm.org)
- Actinomyces meyeri was coisolated with Peptostreptococcus micros and was the only species other than A. israelii associated with sulfur granules in histological specimens. (asm.org)
- 6 ) examined a large collection of organisms and found that Actinomyces israelii and A. turicensis were most prevalent and were most commonly associated with intrauterine contraceptive devices. (asm.org)
- Vspp ), Capnocytophaga gingivalis ( Cgin ), Actinomyces israelii ( Aisr ), and Fusobacterium nucleatum ( Fnuc ) (stage 2). (asmscience.org)
- 1987. Membrane ATPases and acid tolerance of Actinomyces viscosus and Lactobacillus casei . (springer.com)
- Lactobacillus acidophilus, Actinomyces viscosus, Nocardia spp. (lumenlearning.com)
- However, new methods of identification, such as matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS), allow rapid and reliable identification of many bacteria, including Actinomyces -like organisms ( 10 - 12 ). (asm.org)
- Any of various rod-shaped or filamentous, chiefly anaerobic bacteria of the genus Actinomyces, commonly found in the mammalian oral cavity and including pathogenic species, such as the causative agents of actinomycosis. (thefreedictionary.com)
- Actinomycosis is a slowly progressive, pus-forming infection caused by branching bacteria of the genus Actinomyces . (gopetsamerica.com)
- Actinomyces bacteria normally live in the mouth, the nasal passages near the throat, and the bowels. (gopetsamerica.com)
- Actinomycosis is an infectious disease caused by gram positive, branching, pleomorphic (can change shape somewhat between a rod and coccus), rod-shaped bacteria of the genus Actinomyces , most commonly the A. viscosus species. (petmd.com)
- Actinomyces viscosus is a Gram-positive, anaerobic, filamentous bacterium that is part of the human oral flora. (sciencephoto.com)
- 1990 Tetrameric manganese superoxide dismutases from anaerobic Actinomyces . (springer.com)
- Gram-positive, pleomorphic non-spore-forming, non-acid-fast anaerobic or microaerophilic bacilli of the genus Actinomyces and the order Actinomycetales cause actinomycosis. (medscape.com)
- A study of nonpuerperal breast infections has demonstrated that, when culture methods are used which enhance recovery of fastidious anaerobic organisms, almost 25% of recurrent breast abscesses (8 of 33 patients) and 10% of primary breast abscesses (2 of 19 patients) involved Actinomyces species ( 7 ). (asm.org)
- Actinomyces naeslun´dii an anaerobic species that is a normal inhabitant of the oral cavity and a cause of human actinomycosis and periodontal disease. (thefreedictionary.com)
- Thus, based only on Gram staining, the catalase reaction, and better growth under anaerobic conditions than aerobic conditions, strains may be assigned to the genus Actinomyces . (asm.org)
- Under a magnification of 500X, this image depicted the morphologic characteristics displayed by a number of Gram-positive, Actinomyces viscosus bacterial microcolonies, also referred to as spider colonies, which had been cultivated for a time period of 24-hours, on a growth medium of brain heart infusion (BHI) agar, and under anaerobic conditions. (cdc.gov)
- Under a magnification of 105X, this image revealed the morphologic characteristics displayed by two, Gram-positive, Actinomyces viscosus bacterial colonies, which had been cultivated for a time period of 2-days, on a growth medium of brain heart infusion (BHI) agar, and under anaerobic conditions. (cdc.gov)
- Actinomyces is a gram-positive facultative anaerobic bacterium and one of the most common commensals of human oral cavity. (biolsci.org)
- Actinomycosis is a chronic infection caused by Actinomyces species characterized by abscess formation, tissue fibrosis, and draining sinuses. (asm.org)
- The spectrum of infections caused by Actinomyces species ranges from classical invasive actinomycosis to a less invasive form of superficial skin and soft tissue infection. (asm.org)
- Pulmonary actinomycosis caused by A. viscosus. (cueflash.com)
- Pulmonary actinomycosis may develop as a result of aspiration of Actinomyces that originated from dental plaque and diseased gums. (gopetsamerica.com)
- Actinomyces georgiae is a species in the genus of Actinomyces. (wikipedia.org)
- However, we also demonstrated a complexity within the Actinomyces genus that compromises the biochemical identification of Actinomyces that can be performed in most clinical laboratories. (asm.org)
- type species is Actinomyces bovis . (thefreedictionary.com)
- What is the common condition caused by Actinomyces bovis? (cueflash.com)
- Actinomyces bovis , Actinomyces hordeovulneris , Actinomyces canis and Actinomyces viscosus . (gopetsamerica.com)
- Actinomyces bovis causes loose teeth and difficulty breathing due to swelling of the nasal cavity. (gopetsamerica.com)
- A. viscosus causes periodontal disease in animals and has been isolated from human dental calculus and root surface caries, as well as the oral cavity of hamsters and actinomycotic lesions in swine, cats, and dogs. (wikipedia.org)
- Actinomyces viscosus has been shown to be associated with periodontal disease and other inflammatory diseases. (thefreedictionary.com)
- In root surface caries, species of Actinomyces can dominate the flora of lesions in root tissue of mainly elderly people, and it also aids in plaque development in periodontal diseases, which can lead to gingivitis. (canada.ca)
- Actinomyces may cause disease due to poor oral hygiene, dental and periodontal problems, trauma and following oral surgical procedures. (gopetsamerica.com)
- No inhibition was seen after these resins were cured, whereas the antibacterial effect of XR-Bond on S sanguis and A viscosus was not affected by light curing. (quintpub.com)
- Hall V. Actinomyces--gathering evidence of human colonization and infection. (medscape.com)
- Westhoff C. IUDs and colonization or infection with Actinomyces. (medscape.com)
- Apotheloz C, Regamey C. Disseminated infection due to Actinomyces meyeri: case report and review. (medscape.com)
- Other bacterial species that often are copathogens to Actinomyces species may aid spread of infection by inhibiting host defenses and reducing local oxygen tension. (medscape.com)
- However, primary Actinomyces infection of the breast, first described by Ammentorp in 1893 ( 8 ), is generally considered to be rare. (asm.org)
- Diagnosis of Actinomyces breast infection was often made following surgical intervention, although the method of diagnosis was not specified. (asm.org)
- Actinomyces breast infection is likely to be underascertained in routine clinical practice, as these fastidious organisms are notoriously difficult and laborious to identify using conventional laboratory methods ( 2 - 4 ). (asm.org)
- are common in mixed infections, and infection with Actinomyces spp. (canada.ca)
- Actinomyces viscosus noncontagious bacterial infection is grown in test tubes. (britannica.com)
- Some sort of trauma is sustained and A. viscosus is spread from the oral cavity through licking to set up an infection. (cueflash.com)
- Davies DR, Lucas J. Actinomyces infection in a dog with pulmonary carcinoma. (gopetsamerica.com)
- prosthetic joint infection, Actinomyces spp. (biolsci.org)
- Bone and joint infection due to Actinomyces spp. (biolsci.org)
- Actinomyces viscosus is a filamentous soil bacterium, classified in the Actinobacteria. (sciencephoto.com)
- Coloured scanning electron micrograph (SEM) of Oral bacterium, Actinomyces viscosus. (sciencephoto.com)
- A. viscosus infections respond well to penicillin Benzylpenicillin and other antibiotics Therapeutics: antimicrobial drug , unlike Nocardia infections Nocardia spp . (vetstream.com)
- Nocardia asteroides (and possibly Actinomyces viscosus? (cueflash.com)
- 2. Actinomyces and Nocardia infections are often associated with foreign bodies (I'm not sure how this is supposed to help in telling them apart. (cueflash.com)
- Actinomyces hordeovulneris causes abscesses in the liver and spleen and generalized infections in the cavities surrounding the lungs and bacterial arthritis . (gopetsamerica.com)
- The Actinomyces fimbrial system is a versatile adhesive principle for promoting bacterial coaggregation and host tissue adherence that leads to the development of one of the most complex biofilms, the dental plaque. (asmscience.org)
- Actinomyces lingnae , Actinomyces gravenitzii , Actinomyces odontolyticus , and Actinomyces meyeri were isolated from respiratory specimens, while A. odontolyticus -like strains were isolated from diverse sources. (asm.org)
- A. viscosus has also been known to cause lung infections, but only in very few cases. (wikipedia.org)
- Multiple-week antibiotic therapies have cured actinomycotic infections caused by A. viscosus in every recorded case. (wikipedia.org)
- Although A. viscosus is difficult to distinguish from other closely related actinomycetes, the general determination of being an actinomycete is sufficient for treatment of infections. (wikipedia.org)
- Actinomyces and related organisms in human infections. (medscape.com)
- Actinomyces radicidentis , a recently described species, has been isolated with polymerase chain reaction from patients with endodontic infections. (medscape.com)
- We present a review detailing all Actinomyces species isolated from breast infections in NHS Lothian between 2005 and 2013, Actinomyces species isolated from breast infections referred to the United Kingdom Anaerobe Reference Unit between 1988 and 2014, and cases describing Actinomyces breast infections published in the medical literature since 1994. (asm.org)
- Actinomyces species are fastidious organisms which can be difficult to identify and are likely to be underascertained as a cause of breast infections. (asm.org)
- A number of more recently described Actinomyces species and Actinomyces -like organisms have been associated with less invasive superficial soft tissue infections and are isolated from abscesses at various anatomical sites ( 2 - 4 ). (asm.org)
- Subsequent to this review, case reports and studies have been published describing a further 27 breast infections caused by Actinomyces species. (asm.org)
- and in recent studies of three newly described species, Actinomyces turicensis was reported to be associated with genital, skin-related, and urinary tract infections, whereas Actinomyces radingae was found only in skin-related infections and Actinomyces europaeus was detected in patients with urinary tract infections ( 12 , 13 , 14 ). (asm.org)
- Actinomyces prosthetic joint infections (APJIs) are rare and optimal medical and surgical treatment strategies are unknown. (biolsci.org)
- S. mitis ), the green complex ( E. corrodens, Campylobacter gracilis, Capnocytophaga ochracea, Capnocytophaga sputigena, A. actinomycetemcomitans ), the purple complex ( Veillonella parvula , Actinomyces odontolyticus ) and the blue complex ( A. viscosus ) are correlated. (frontiersin.org)
- The 5th complex consisted of Veillonella parvula and Actinomyces odontolyticus. (nih.gov)
- Dominant low responsiveness in the IgG response of mice to the complex protein antigen type 1 fimbriae from Actinomyces viscosus T14V. (jimmunol.org)
- Construction and use of integration plasmids to generate site-specific mutations in the Actinomyces viscosus T14V chromosome. (asm.org)
- Stable transformants of Actinomyces viscosus T14V carrying heterologous DNA were obtained with the aid of integration plasmids. (asm.org)
- These plasmids contained a kanamycin resistance (Kmr) gene flanked by A. viscosus T14V genomic DNA, including parts of the type 1 structural fimbrial subunit gene (fimP) on one or both sides of the antibiotic marker. (asm.org)
- Integration of this plasmid into the A. viscosus T14V genome affected the expression and function of type 1 fimbriae in the transformants. (asm.org)
- In contrast, strain MY52S synthesized the structural subunit protein, as detected by immunostaining with anti-A. viscosus T14V type 1 fimbria antibodies. (asm.org)
- Standard strain samples of Escherichia coli, Pseudomonas aeruginosa, Actinomyces viscosus and Bacillus subtilis were used. (bvsalud.org)
- Linhagens padrão de Escherichia coli, Pseudomonas aeruginosa, Actinomyces viscosus e Bacillus subtilis foram utilizadas. (bvsalud.org)
- A. viscosus MY50D and MY51S lacked type 1 fimbriae and did not bind to proline-rich proteins (the fimbrial receptors) immobilized on nitrocellulose. (asm.org)
- Identification of Human Strains of Actinomyces viscosus" (PDF). (wikipedia.org)
- We identified 92 clinical strains of Actinomyces , including 13 strains in the related Arcanobacterium-Actinobaculum taxon, by 16S rRNA gene sequence analysis and recorded their biotypes, sources, and disease associations. (asm.org)
- One novel group with three strains, Actinomyces houstonensis sp. (asm.org)
- Such strains (intermediate strains) have been described in taxonomic studies of Actinomyces, yet little is known of the differences in physiology of these strains or their relationship to root surface caries. (nih.gov)
- NexBio's Fludase is a recombinant sialidase fusion protein composed of a sialidase catalytic domain derived from actinomyces viscosus, a constituent of the normal oral and gastrointestinal flora in humans, and a cell surface-anchoring domain. (drugdevelopment-technology.com)
- The Actinomyces viscosus sialidase Catalytic Domain (AvCD) sialidase domain in DAS181 selectively cleaves sialic acids from the host cells, thereby rendering them inaccessible to the influenza viral particles that require sialic acids as receptors. (clinicaltrials.gov)
- Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. (sciencephoto.com)
- Thus, these results demonstrate that insertion of heterologous DNA at specific sites of the Actinomyces genome can be facilitated with integratable plasmids and that the transformants and mutants generated will aid in the delineation of the roles and contributions of specific genes to the structure and function of any macromolecule produced by these organisms. (asm.org)
- Actinomyces turicensis was the most frequently isolated species and was associated with genitourinary tract specimens, often with other organisms and rarely with inflammatory cells. (asm.org)
- In fact, there may even be synergism between Actinomyces and other organisms. (petmd.com)
- Actinomyces radingae was most often associated with serious, chronic soft tissue abscesses of the breast, chest, and back. (asm.org)
- Actinomyces europaeus was associated with skin abscesses of the neck and genital areas. (asm.org)
- Actinomyces viscosus causes chronic pneumonia, inflammation of cavities surrounding the lungs, and skin abscesses associated with fever, pain and swelling of the skin. (gopetsamerica.com)
- Actinomyces gerencseriae may also cause disease in humans. (medscape.com)
- Actinomyces gerencseriae sp. (wikipedia.org)
- A. viscosus has a low level of virulence and is often mistaken with other actinomycetes. (wikipedia.org)
- Results: EEP exerted various degrees of antibacterial activity against S. mutans and A. viscosus, depending on the geographic area of collection. (unne.edu.ar)
- By the agar-well diffusion method, we found a high susceptibility with an inhibitory halo of 11.25 ± 4.68 mm and 10.90 ± 4.21 mm against S. mutans and A. viscosus, respectively. (unne.edu.ar)
- It also presented low Minimum Inhibitory Concentration and Minimum Bactericidal Concentration values against S. mutans (MIC 0.05 mg/mL - MBC 0.46 mg/mL) followed by A. viscosus (MIC 0.11 mg/mL - MBC 0.93 mg/mL). (unne.edu.ar)
- Conclusions: The combined results from all methods indicated that S. mutans is more susceptible to the effect of the Tunuyán EEP than A. viscosus. (unne.edu.ar)
- Actinomyces odonotlyticus was the most commonly found subspecies at our institution. (biolsci.org)
- 1,2) A odontolyticus and A viscosus are more often associated with dental caries. (thefreedictionary.com)
- Microbiological identification of Actinomyces to the species level is difficult in the clinical laboratory. (asm.org)
- The present invention relates to an oral composition having an excellent antibacterial action agent Actinomyces viscosus and effectively preventing the development of calculus and periodontitis. (freepatentsonline.com)
- Actinomyces viscosus is a human and animal pathogen/pathobiont which colonises the mouths of 70% of adult humans. (wikipedia.org)
- Actinomyces oris is the most abundant species in the human oral cavity. (asmscience.org)
- Actinomyces may have characteristic sulfur granules in purulent drainage. (thefreedictionary.com)
- Pathogen Safety Data Sheets: Infectious Substances - Actinomyces spp. (canada.ca)