Actinomyces viscosus. Medical search

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.

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.

Infections with bacteria of the genus ACTINOMYCES.

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.

A film that attaches to teeth, often causing DENTAL CARIES and GINGIVITIS. It is composed of MUCINS, secreted from salivary glands, and microorganisms.

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)

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.

A family of bacteria including numerous parasitic and pathogenic forms.

A polysaccharide-producing species of STREPTOCOCCUS isolated from human dental plaque.

The clear, viscous fluid secreted by the SALIVARY GLANDS and mucous glands of the mouth. It contains MUCINS, water, organic salts, and ptylin.

Thin, hairlike appendages, 1 to 20 microns in length and often occurring in large numbers, present on the cells of gram-negative bacteria, particularly Enterobacteriaceae and Neisseria. Unlike flagella, they do not possess motility, but being protein (pilin) in nature, they possess antigenic and hemagglutinating properties. They are of medical importance because some fimbriae mediate the attachment of bacteria to cells via adhesins (ADHESINS, BACTERIAL). Bacterial fimbriae refer to common pili, to be distinguished from the preferred use of "pili", which is confined to sex pili (PILI, SEX).

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.

Protein domains that are enriched in PROLINE. The cyclical nature of proline causes the peptide bonds it forms to have a limited degree of conformational mobility. Therefore the presence of multiple prolines in close proximity to each other can convey a distinct conformational arrangement to a peptide chain.

A genus of gram-negative, anaerobic cocci parasitic in the mouth and in the intestinal and respiratory tracts of man and other animals.

Proteins and peptides found in SALIVA and the SALIVARY GLANDS. Some salivary proteins such as ALPHA-AMYLASES are enzymes, but their composition varies in different individuals.

A thin protein film on the surface of DENTAL ENAMEL. It is widely believed to result from the selective adsorption of precursor proteins present in SALIVA onto tooth surfaces, and to reduce microbial adherence to the TEETH.

A family of proline-rich proteins that constitute the majority of the protein component of SALIVA. Salivary proline-rich proteins occur as acidic, basic and glycosylated basic proteins. They perform a variety of functions such as adhering to the acquired ENAMEL PELLICLE, acting as lubricants and precipitating TANNINS.

A property of the surface of an object that makes it stick to another surface.

One of a set of bone-like structures in the mouth used for biting and chewing.

A rod-shaped bacterium isolated from milk and cheese, dairy products and dairy environments, sour dough, cow dung, silage, and human mouth, human intestinal contents and stools, and the human vagina.

A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.

Physicochemical property of fimbriated (FIMBRIAE, BACTERIAL) and non-fimbriated bacteria of attaching to cells, tissue, and nonbiological surfaces. It is a factor in bacterial colonization and pathogenicity.

The clumping together of suspended material resulting from the action of AGGLUTININS.

The aggregation of ERYTHROCYTES by AGGLUTININS, including antibodies, lectins, and viral proteins (HEMAGGLUTINATION, VIRAL).

A genus of gram-negative, anaerobic, rod-shaped bacteria. Its organisms are normal inhabitants of the oral, respiratory, intestinal, and urogenital cavities of humans, animals, and insects. Some species may be pathogenic.

The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.

The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis.

The largest class of organic compounds, including STARCH; GLYCOGEN; CELLULOSE; POLYSACCHARIDES; and simple MONOSACCHARIDES. Carbohydrates are composed of carbon, hydrogen, and oxygen in a ratio of Cn(H2O)n.

A nonreducing disaccharide composed of GLUCOSE and FRUCTOSE linked via their anomeric carbons. It is obtained commercially from SUGARCANE, sugar beet (BETA VULGARIS), and other plants and used extensively as a food and a sweetener.

Pathological processes involving the PERIODONTIUM including the gum (GINGIVA), the alveolar bone (ALVEOLAR PROCESS), the DENTAL CEMENTUM, and the PERIODONTAL LIGAMENT.

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.

The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.

Substances elaborated by bacteria that have antigenic activity.

Proteins that share the common characteristic of binding to carbohydrates. Some ANTIBODIES and carbohydrate-metabolizing proteins (ENZYMES) also bind to carbohydrates, however they are not considered lectins. PLANT LECTINS are carbohydrate-binding proteins that have been primarily identified by their hemagglutinating activity (HEMAGGLUTININS). However, a variety of lectins occur in animal species where they serve diverse array of functions through specific carbohydrate recognition.

Polysaccharides found in bacteria and in capsules thereof.

A species of CORYNEBACTERIUM isolated from abscesses of warm-blooded animals.

An enzyme that catalyzes the hydrolysis of alpha-2,3, alpha-2,6-, and alpha-2,8-glycosidic linkages (at a decreasing rate, respectively) of terminal sialic residues in oligosaccharides, glycoproteins, glycolipids, colominic acid, and synthetic substrate. (From Enzyme Nomenclature, 1992)

A species of gram-positive, coccoid bacteria that is numerous in the mouth and throat. It is a common cause of endocarditis and is also implicated in dental plaque formation.

Presence of warmth or heat or a temperature notably higher than an accustomed norm.

Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.

Immunoglobulins produced in a response to BACTERIAL ANTIGENS.

Medicines whose effectiveness is unproven and whose ingredients are often secret.

Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).

The fraudulent misrepresentation of the diagnosis and treatment of disease.

Substances that reduce the growth or reproduction of BACTERIA.

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).

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).

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.

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.

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.

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)

A medical specialty concerned with the provision of continuing, comprehensive primary health care for the entire family.

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.

A branch of internal medicine concerned with the diagnosis and treatment of INFECTIOUS DISEASES.

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 ...

https://en.wikipedia.org/wiki/Human_microbiome

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 - Mobiluncus ...

https://en.wikipedia.org/wiki/List_of_MeSH_codes_(B03)

... 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 ...

https://en.wikipedia.org/wiki/Actinomyces_gerencseriae

... 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. ...

https://en.wikipedia.org/wiki/Actinomyces_georgiae

... 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 ... "Oral bacterium - Actinomyces viscosus". Dennis Kunkel Microscopy, Inc. Retrieved 19 December 2015. CS1 maint: discouraged ... Type strain of Actinomyces viscosus at BacDive - the Bacterial Diversity Metadatabase Biology portal. ...

https://en.wikipedia.org/wiki/Actinomyces_viscosus

None displayed activity against A. actinomycetemcomitans, while four of the others were active against A. viscosus and three ... Four of these compounds (Sagittine A-D) exhibited antibacterial activity against Streptococcus mutans and Actinomyces ...

https://en.wikipedia.org/wiki/Sagittaria_sagittifolia

Actinomyces viscosus, Nocardia spp., dan Streptococcus mutans. Contoh bakteri dapat diambil pada plak. ...

https://id.wikipedia.org/wiki/Karies_gigi

Actinomyces species are one of the early microbial colonizers in the oral cavity and the relationship between XH001 with TM7x ... When TM7x cells are co-cultured with other micro-organisms, related to its specific host, such as A. naeslundii, A. viscosus, A ... The TM7x cells are host specific, and are physically bound to their host, Actinomyces odontolyticus strain XH001 which are rod ... It is an obligate epibiont parasite, or an "epiparasite", growing on the surface of its host bacterial species Actinomyces ...

https://en.wikipedia.org/wiki/TM7x

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. ...

http://www.sciencephoto.com/media/690208/view

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 ...

https://www.sciencephoto.com/media/798991/view/oral-bacterium-actinomyces-viscosus-sem

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 ...

https://medical-dictionary.thefreedictionary.com/Actinomyces+viscosus

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/ ...

http://encyclopedia2.thefreedictionary.com/Actinomyces+viscosus

... 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. ...

https://www.jimmunol.org/content/146/6/1949/tab-article-info

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 ...

https://iai.asm.org/content/21/3/978/figures-only

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, ...

https://vetstream.com/treat/felis/bug/actinomyces-viscosus

Find details on Actinomyces viscosus in dogs including diagnosis and symptoms, active forms, resting forms, clinical effects, ... Actinomyces horeovulneris is also commonly associated with migrating grass awns.. *Actinomyces bowdenii is associated with ... L:viscum- bird-lime;viscosus- sticky.. Active Forms. This article is available in full to registered subscribers Sign up now to ... A. viscosus infections respond well to penicillin Benzylpenicillin and other antibiotics Therapeutics: antimicrobial drug , ...

https://vetstream.com/clinical-reference/canis/bug/actinomyces-viscosus

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. ...

https://iai.asm.org/content/63/8/2924?ijkey=7e378a7ef152a077a924b1e3b5fe13b11965beac&keytype2=tf_ipsecsha

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 ... "Oral bacterium - Actinomyces viscosus". Dennis Kunkel Microscopy, Inc. Retrieved 19 December 2015. CS1 maint: discouraged ... Type strain of Actinomyces viscosus at BacDive - the Bacterial Diversity Metadatabase Biology portal. ...

https://en.wikipedia.org/wiki/Actinomyces_viscosus

Parent taxon: Actinomyces Harz 1877 (Approved Lists 1980) Assigned by: Georg LK, Pine L, Gerencser MA. Actinomyces viscosus ... Actinomyces viscosus comb. nov. A catalase positive, facultative member of the genus Actinomyces. International Journal of ... Name: Actinomyces viscosus (Howell et al. 1965) Georg et al. 1969 (Approved Lists 1980) ... lpsn.dsmz.de/species/actinomyces-viscosus. Copy to clipboard. Link copied to clipboard ...

https://lpsn.dsmz.de/species/actinomyces-viscosus

dash; Actinomyces urogenitalis [10001487] Prebiotic. [ ]. Postbiotic. [ ]. Antibiotic. [ ]. Shared References. [ ]. References ...

https://www.metabiom.org/microbiome/724/10000852.html

A. Viscosus is a commensal organism of the human oral cavity. ... Actinomyces viscosus - a species of anaerobic, gram positive, ... Actinomyces viscosus is part of WikiMDs free ^articles!. ^Actinomyces viscosus (article) is provided for informational ... Since the data might have changed, please query MeSH on Actinomyces viscosus for any updates. ... Actinomyces viscosus - a species of anaerobic, gram positive, rod shaped bacteria assigned to the phylum actinobacteria. This ...

http://www.wikimd.org/wiki/Actinomyces_viscosus

Actinomyces viscosus (Howell et al.) Georg et al. (ATCC® 15987™) ATCC® Number: 15987™ Deposited As Odontomyces viscosus Howell ...

https://www.atcc.org/en/Products/Quality_Control_Strains/By_Organization__Company.aspx?dsNav=Ns:P_Product_Name%7C101%7C1%7C,Nrc:id-1000507-dynrank-disabled%7Cid-1000506-dynrank-disabled,N:4294935952&hasShowAll=1000507%7C1000506%7C

Kalfas S, Takahashi N, Yamada T. Initial catabolism of sorbitol in Actinomyces naeslundii and Actinomyces viscosus. Oral ... Kalfas, S. ; Takahashi, N. ; Yamada, T. / Initial catabolism of sorbitol in Actinomyces naeslundii and Actinomyces viscosus. In ... Kalfas, S, Takahashi, N & Yamada, T 1994, Initial catabolism of sorbitol in Actinomyces naeslundii and Actinomyces viscosus, ... Initial catabolism of sorbitol in Actinomyces naeslundii and Actinomyces viscosus. / Kalfas, S.; Takahashi, N.; Yamada, T. ...

https://tohoku.pure.elsevier.com/en/publications/initial-catabolism-of-sorbitol-in-actinomyces-naeslundii-and-acti

PROSTHETIC JOINT INFECTION WITH ACTINOMYCES VISCOSUS. Cohen, Oren J.; Keiser, John; Pollner, Jane; More ...

https://journals.lww.com/infectdis/toc/1993/09000

... ... 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 ...

http://repositorio.unne.edu.ar/handle/123456789/1654

Actinomyces viscosus Isolation from the Skin of a Cat Koenhemsi L., Sigirci B.D... ...

https://www.ivis.org/library/israel-journal-of-veterinary-medicine/israel-journal-of-veterinary-medicine-vol-694-dec

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 ...

https://www.mdpi.com/1420-3049/22/11/1957/htm

Actinomyces viscosus, is a filamentous gram positive bacteria and is the primary coloniser on the tooth surface 5. It is ... 890) and Actinomyces viscosus (MTCC NO. 7345) were obtained from Microbial Type Culture Collection and Gene Bank, Chandhigarh, ... ON DENTAL CARIES PATHOGENS STREPTOCOCCUS MUTANS AND ACTINOMYCES VISCOSUS A STUDY ON IN VITRO ANTIBACTERIAL ACTIVITY OF FICUS ... have activity against both Streptococcus mutans and Actinomyces viscosus.. Table 2 shows the zone of inhibition for various ...

https://ijpsr.com/bft-article/a-study-on-in-vitro-antibacterial-activity-of-ficus-bengalensis-linn-on-dental-caries-pathogens-streptococcus-mutans-and-actinomyces-viscosus/?view=fulltext

Actinomyces viscosus in the mandibular approximal site; Strep. mutans, Veillonella sp. and Lactobacillus sp. in the maxillary ...

https://www.ncbi.nlm.nih.gov/pubmed/3861144?dopt=Abstract

These bacterial species include Streptococcus pneumoniae and Actinomyces viscosus. In this example, monoclonal or polyclonal ... For example, polyclonal antibodies or anti-sera or monoclonal antibodies for Streptococcus pneumoniae, Actinomyces viscosus and ... from likely contaminating organisms in the sample such as bacterial species Streptococcus pneumoniae and Actinomyces viscosus ...

https://www.freepatentsonline.com/y2008/0286758.html

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. +. ...

https://aem.asm.org/content/64/2/795/figures-only

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 ...

https://jb.asm.org/content/195/4/833

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]. ...

https://emedicine.medscape.com/article/211587-treatment

Actinomyces viscosus bacteria. Coloured scanning electron micrograph (SEM) of strands of Actinomyces viscosus. Actinomyces ...

https://www.masterfile.com/image/en/679-08425083/streptococcus-bacteria-coloured-scanning-electron-micrograph-sem

Isolation of Wolinella recta and Actinomyces viscosus from an actinomycotic chest wall mass. J. Clin. Microbiol. 20: 1187-1189. ...

https://link.springer.com/chapter/10.1007/978-1-4757-2191-1_28

Consistently, an enrichment of opportunistic pathogens (such as Clostridium hathewayi, Actinomyces viscosus, Bacteroides nordii ...

https://www.nature.com/articles/s41575-021-00416-6?error=cookies_not_supported&code=9f5dfdf6-6c99-420a-b0ae-f3b6caa78dc9

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 ...

https://www.magiran.com/volume/150314

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 ...

https://link.springer.com/article/10.1007%2FBF01569826

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 initial steps of sorbitol catabolism were studied in 4 strains of Actinomyces naeslundii and Actinomyces viscosus that had been isolated from human dental plaque. (elsevier.com)
Thus, the initial catabolic pathway of sorbitol in A. naeslundii and A. viscosus is different from those described for other oral bacteria. (elsevier.com)
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)
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 viscosus - a species of anaerobic, gram positive, rod shaped bacteria assigned to the phylum actinobacteria. (wikimd.org)
Actinomyces viscosus , is a filamentous gram positive bacteria and is the primary coloniser on the tooth surface 5 . (ijpsr.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)
Actinomyces bacteria normally live in the mouth and in the nasal passages near the throat. (merckvetmanual.com)
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)
Negatively stained preparations incubated with PRP-gold conjugates but not bovine serum albumin-gold complexes bound specifically to bacteria possessing type 1 fimbriae, A. viscosus T14V-J1 and 5519. (wikigenes.org)
Actinomycosis is a slowly progressive, pus-forming infection caused by branching bacteria of the genus Actinomyces . (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)

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)

A catalase positive, facultative member of the genus Actinomyces . (dsmz.de)
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)
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)
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)
Actinomyces georgiae is a species in the genus of Actinomyces. (wikipedia.org)

1987. Membrane ATPases and acid tolerance of Actinomyces viscosus and Lactobacillus casei . (springer.com)
Lactobacillus acidophilus, Actinomyces viscosus, Nocardia spp. (lumenlearning.com)

Actinomyces radicidentis , a recently described species, has been isolated with polymerase chain reaction from patients with endodontic infections. (medscape.com)
Actinomyces species grow well in enriched media with brain-heart infusion and may be aided in growth by an atmosphere of 6-10% ambient carbon dioxide. (medscape.com)
Actinomyces species that cause human disease are not found in nature but are normal flora of the oropharynx, GI tract, and female genital tract. (medscape.com)
In general, Actinomyces species, being members of the normal flora, are agents of low pathogenicity and require disruption of the mucosal barrier to cause disease. (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)
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)
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)
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)
Subsequent to this review, case reports and studies have been published describing a further 27 breast infections caused by Actinomyces species. (asm.org)
Subsequently, there is a risk that cultures of Actinomyces species are simply identified morphologically as diphtheroids and dismissed as skin commensals, even when grown from an abscess sample. (asm.org)
type species is Actinomyces bovis . (thefreedictionary.com)
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)
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)
Microbiological identification of Actinomyces to the species level is difficult in the clinical laboratory. (asm.org)
It is not clear that assignment to a species is clinically important, although there have been some excellent previous reports of the frequencies of occurrence and site associations of Actinomyces species ( 4 , 5 , 7 , 9 , 12 , 13 , 14 ). (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)
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 oris is the most abundant species in the human oral cavity. (asmscience.org)

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)
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)

Pulmonary actinomycosis may develop as a result of aspiration of Actinomyces that originated from dental plaque and diseased gums. (gopetsamerica.com)
Pulmonary actinomycosis caused by A. viscosus. (cueflash.com)

Actinomyces bovis has been identified infrequently in infections in dogs and other mammals. (merckvetmanual.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)
What is the common condition caused by Actinomyces bovis? (cueflash.com)

Apotheloz C, Regamey C. Disseminated infection due to Actinomyces meyeri: case report and review. (medscape.com)
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 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)
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)

Actinomyces hordeovulneris causes abscesses (collections of infection and pus) and generalized infections, such as inflammation of the cavity surrounding the lungs, inflammation of the lining of the abdomen, abscess on internal organs (such as the liver and spleen), and bacterial arthritis in dogs. (merckvetmanual.com)
Actinomyces viscosus causes abscesses to form under the skin in dogs. (merckvetmanual.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 hordeovulneris causes abscesses in the liver and spleen and generalized infections in the cavities surrounding the lungs and bacterial arthritis . (gopetsamerica.com)
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)

Hall V. Actinomyces--gathering evidence of human colonization and infection. (medscape.com)
Westhoff C. IUDs and colonization or infection with Actinomyces. (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)
Davies DR, Lucas J. Actinomyces infection in a dog with pulmonary carcinoma. (gopetsamerica.com)
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)

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)

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 gerencseriae may also cause disease in humans. (medscape.com)
Actinomyces gerencseriae sp. (wikipedia.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 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)

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)

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)

A. viscosus has a low level of virulence and is often mistaken with other actinomycetes. (wikipedia.org)

A. Viscosus is a commensal organism of the human oral cavity. (wikimd.org)

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)
In fact, there may even be synergism between Actinomyces and other organisms. (petmd.com)

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)

Actinomyces and the intrauterine device. (medscape.com)

Results: EEP exerted various degrees of antibacterial activity against S. mutans and A. viscosus, depending on the geographic area of collection. (unne.edu.ar)
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)

1,2) A odontolyticus and A viscosus are more often associated with dental caries. (thefreedictionary.com)
A. viscosus of root caries origin synthesize large quantities of glycogen and subsequently degrade this stored polymer slowly with acid production, at acidic pH levels, may play an important role in the root caries process 6 . (ijpsr.com)

In the transformant strain designated A. viscosus MY50D, the inactivated fimP replaced the wild-type fimP via allelic replacement. (asm.org)

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 horeovulneris is also commonly associated with migrating grass awns. (vetstream.com)

Actinomyces viscosus is a human and animal pathogen/pathobiont which colonises the mouths of 70% of adult humans. (wikipedia.org)
Pathogen Safety Data Sheets: Infectious Substances - Actinomyces spp. (canada.ca)

Actinomyces bowdenii is associated with mandibular abcesses and foreign body pyogranulomas. (vetstream.com)

Moreover, gnotobiotic rats immunized parenterally with antigens from Actinomyces viscosus responded to dental plaque produced by this microorganism with a relatively small inflammatory infiltrate compared to control animals (13). (springer.com)
A slime-producing microorganism in dental plaque of rats selected by glucose feeding: chemical composition of slime elaborated by Actinomyces viscosus NY1. (microbiologyresearch.org)

A. viscosus colonies test positive for catalase and negative for indole. (wikipedia.org)

Actinomyces may have characteristic sulfur granules in purulent drainage. (thefreedictionary.com)

Anatomy6

Organisms12

Diseases4

Chemicals and Drugs16

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Phenomena and Processes11

Disciplines and Occupations2

Anthropology, Education, Sociology and Social Phenomena1

Health Care4

Geographicals1

Addition of antibacterial agents to MMA-TBB dentin bonding systems--influence on tensile bond strength and antibacterial effect. (1/19)

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)

Isolation and characterization of Actinomyces viscosus mutants defective in binding salivary proline-rich proteins. (3/19)

Effects of cecropin-XJ on growth and adherence of oral cariogenic bacteria in vitro. (4/19)

Immunochemical and functional studies of Actinomyces viscosus T14V type 1 fimbriae with monoclonal and polyclonal antibodies directed against the fimbrial subunit. (5/19)

Tyrosine sulfation of statherin. (6/19)

Activity of an antimicrobial peptide mimetic against planktonic and biofilm cultures of oral pathogens. (7/19)

Isolation of a neuraminidase gene from Actinomyces viscosus T14V. (8/19)

Actinomyces

Actinomyces viscosus

Actinomycosis

Streptococcus sanguis

Dental Plaque

Hydroxyapatites

Mouth

Actinomycetaceae

Streptococcus mutans

Saliva

Fimbriae, Bacterial

Streptococcus

Proline-Rich Protein Domains

Veillonella

Salivary Proteins and Peptides

Dental Pellicle

Dextranase

Salivary Proline-Rich Proteins

Adhesiveness

Tooth

Lactobacillus casei

Lactose

Bacterial Adhesion

Agglutination

Hemagglutination

Bacteroides

Adsorption

Durapatite

Carbohydrates

Sucrose

Periodontal Diseases

Species Specificity

Cell Wall

Antigens, Bacterial

Lectins

Polysaccharides, Bacterial

Corynebacterium pyogenes

Neuraminidase

Streptococcus oralis

Hot Temperature

Culture Media

Antibodies, Bacterial

Nostrums

Microbial Sensitivity Tests

Quackery

Anti-Bacterial Agents

Drug Resistance, Bacterial

Drug Resistance, Microbial

Bacteria

United States Virgin Islands

Disasters

Seasons

Communicable Diseases

Family Practice

Practice Guidelines as Topic

Infectious Disease Medicine

Addition of antibacterial agents to MMA-TBB dentin bonding systems--influence on tensile bond strength and antibacterial effect. (1/19)

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)

Isolation and characterization of Actinomyces viscosus mutants defective in binding salivary proline-rich proteins. (3/19)

Effects of cecropin-XJ on growth and adherence of oral cariogenic bacteria in vitro. (4/19)

Immunochemical and functional studies of Actinomyces viscosus T14V type 1 fimbriae with monoclonal and polyclonal antibodies directed against the fimbrial subunit. (5/19)

Tyrosine sulfation of statherin. (6/19)

Activity of an antimicrobial peptide mimetic against planktonic and biofilm cultures of oral pathogens. (7/19)

Isolation of a neuraminidase gene from Actinomyces viscosus T14V. (8/19)

Calibration of a lactic-acid model for simulating biofilm-induced degradation of the dentin-composite interface<...

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A. viscosus | definition of A. viscosus by Medical dictionary

Species: Actinomyces mediterranea

actinomyces meaning in English - EnglishLearner

Actinomyces, aktinomycety - rod grampozitivn ch, p ev n anaerobn ch ty inkovit ch bakteri - CoJeCo.cz - Va e encyklopedie

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