dablink For the album by Only Crime, see Virulence album Refimprove date September 2008 Virulence is by MeSH .... The pathogenic capacity of an organism is determined by its virulence factors. ref http mesh.kib.ki.se ..., Karolinska Institute, 13 April 2010 ref That is, virulence is the degree of pathogenicity of an organism the relative ability of a pathogen to cause disease . The noun virulence derives from the adjective ... ref In an ecology ecological context, virulence can be defined as the host s parasite induced loss of fitness biology fitness . Virulence can be understood in terms of ultimate cause proximate causes ... virulence factors . Host mediated pathogenesis is often important because the host can respond aggressively ... the infection is being countered. The virulence factors of bacteria are typically proteins or other ... ulcer and cancer . The virulence of various strains of Helicobacter pylori tends to correlate ... disrupt host cell membranes or stimulate endocytosis into host cells. These virulence factors allow ... at the body surface. Immune response inhibitors . Many bacteria produce virulence factors that inhibit ... inhibits phagocytosis of the bacterium by host immune cells. Toxins . Many virulence factors ... Viral virulence factors determine whether infection occurs and how severe the resulting viral disease ... secondary to disruption of the immune system caused by the AIDS virus. Some viral virulence factors ... to evolutionary medicine , optimal virulence increases with horizontal transmission between non relatives ... of viruses, bacteria, and other pathogens, including reproduction, migration within the host, virulence ... for virulence in pathogens. Trade off hypothesis At one time, some biologists argued that pathogens would tend to evolve toward ever decreasing virulence because the death of the host or even serious ... before or after the host dies. The evolution of virulence in pathogens is a balance between the costs and benefits of virulence to the pathogen. Short sighted evolution hypothesis Short sighted evolution ... more details
Optimal virulence is a concept relating to the ecology of hosts and parasite s. One definition of virulence ... time, virulence moderated and parasitic relationships evolved toward symbiosis. This view has ... s resource and habitat in a way, suffers from this higher virulence . This might induce faster ... on the parasite to self limit virulence. The idea is, then, that there exists an equilibrium point of virulence, where parasite s fitness is highest. Any movement on the virulence axis, towards higher or lower virulence, will result in lower fitness for the parasite, and thus will be selected against. Mode of transmission According to evolutionary medicine , virulence increases with horizontal ... has explored the relationship between virulence and mode of transmission. He came to the conclusion that virulence tends to remain especially high in waterborne and vector borne infections, such as cholera ... that explains the virulence of the Spanish flu 1918 influenza pandemic . In crowded conditions the time ... between costs and benefits of virulence. One factor is the time or distance between potential hosts ... of virulence. Another factor is the presence of multiple infections in a single host leading to increased ... the most virulent strains. The advantage of a low virulence strategy becomes moot. Multiple infections .... Expansion into new environments A potential for virulence exists whenever a pathogen invades a new ... the founder strain, providing an opportunity for virulence to erupt. Host susceptibility Host susceptibility contributes to virulence. Once transmission occurs, the 10 pathogen must establish an infection ... this time, the invader is dependent upon the survival of its current host. For this reason virulence thrives in a community with prevalent immune dysfunction and poor nutrition. Virulence weakens in a healthy ... effective strategies against virulence. External links http biology.plosjournals.org perlserv ?request get document&doi 10.1371 2Fjournal.pbio.0040197 Empirical Support for Optimal Virulence in a Castrating ... more details
Virulence factors are molecules expressed and secreted by pathogens bacteria , virus es, fungi and protozoa that enable them to achieve the following colonization of a niche in the host this includes adhesion to cells Immunoevasion Redirects to here , evasion of the host s immune response Immunosuppression , inhibition of the host s immune response entry into and exit out of cells if the pathogen is an intracellular one obtain nutrition from the host. Virulence factors are very often responsible for causing disease in the host as they inhibit certain host functions. Pathogens possess a wide array of virulence factors. Some are intrinsic to the bacteria e.g. capsules and endotoxin whereas others are obtained from plasmid s e.g. some toxins . A major group of virulence factors are bacterial toxins. These are divided into two groups endotoxins and exotoxins . Lipopolysaccharide LPS is a prototypical example of an endotoxin. Lipopolysaccharide is a component of the cell wall of Gram negative bacteria. The Lipid A component of LPS has toxic properties. Citation needed date September 2010 The LPS is a very potent antigen and, as a result, stimulates an intense host immune response. As part of this immune response cytokines are released these can cause the fever and other symptoms seen during disease. If a high amount of LPS is present then septic shock or endotoxic shock may result which ... liver damage. Another group of virulence factors possessed by bacteria are immunoglobulin Ig proteases ... outside a host. Examples No footnotes date November 2009 Examples of virulence factors for Staphylococcus ... Some examples of virulence factors for Streptococcus pyogenes are M protein , lipoteichoic acid ... , dorsettonic , and streptolysin s, and excotoxin s some other virulence factors are adhesion ... enzymes, toxins and antiphagocytic factors. Related links Virulence References Reflist Toxins DEFAULTSORT Virulence Factor Category Microbiology Category Virulence factors de Virulenzfaktor ... more details
Infobox Album See Wikipedia WikiProject Albums Name Virulence Type Studio album Artist Only Crime Cover Onlycrime virulence.jpg Released January 23, 2007 Recorded Blasting Room , br Fort Collins, Colorado , U.S. Genre Melodic hardcore Length 27 54 Label Fat Wreck Chords Producer Only Crime Reviews Allmusic Rating 3 5 Allmusic class album id r932549 pure url yes link Last album To the Nines br 2004 This album Virulence br 2007 Next album Only Crime and Outbreak EP br 2007 Virulence is the second full length studio album from melodic hardcore band, Only Crime . It was released on January 23, 2007 and features the same line up as the previous album, To the Nines , including Russ Rankin from Good Riddance , Bill Stevenson musician Bill Stevenson from Black Flag band Black Flag , Descendents band Descendents and ALL band ALL , Aaron Dalbec from Bane band Bane , and the Zach Blair Blair Brothers from Hagfish band Hagfish . Track listing All music written by Only Crime , all lyrics by Russ Rankin Take Me 2 36 Everything For You 2 47 Shotgun 3 00 Eyes of the World 2 10 Now s the Time 2 17 In Your Eyes 0 39 Just Us 2 46 There s a Moment 2 38 This is Wretched 2 17 Too Loose 1 51 Framed Then Failed 2 15 Xanthology 2 39 Credits Russ Rankin vocals Zach Blair guitar Aaron Dalbec guitar Doni Blair bass Bill Stevenson musician Bill Stevenson drums Recorded at the Blasting Room , Fort Collins, Colorado , U.S. Produced by Only Crime Engineered by Johhny Schou, Jason Livermore, Andrew Berlin, and Bill Stevenson External links http www.fatwreck.com record detail 719 Fat Wreck Chords album page http www.onlycrime.com Only Crime official website http www.drumogre.com Bill Stevenson s official website Category 2007 albums Category Only Crime albums Category Fat Wreck Chords albums ... more details
Pfam box Symbol Ail Lom Name Virulence related OMP image 1qj8 opm.gif width 150 caption Pfam PF06316 InterPro IPR000758 SMART PROSITE PDOC00582 SCOP 1qj9 TCDB OPM family 26 OPM protein 1qj8 PDB PDB3 1orm A 24 171 PDB3 1q9g A 24 171 PDB3 1qj8 A 24 171 Virulence related outer membrane proteins are expressed in Gram negative bacteria and are essential to bacterial survival within macrophages and for eukaryotic cell invasion. This family consists of several bacterial and phage Ail Lom like proteins. The Yersinia enterocolitica Ail protein is a known virulence factor. Proteins in this family are predicted to consist of eight transmembrane beta sheets and four cell surface exposed loops. It is thought that Ail directly promotes invasion and loop 2 contains an active site, perhaps a receptor binding domain. The phage protein Lom is expressed during lysogeny, and encode host cell envelope proteins. Lom is found in the bacterial outer membrane, and is homologous to virulence proteins of two other enterobacterial genera. It has been suggested that lysogeny may generally have a role in bacterial survival in animal hosts, and perhaps in pathogenesis. Members of this group include PagC, required by Salmonella typhimurium for survival in macrophages and for virulence in mice ref name PUB00006270 cite journal author Miller SI title PhoP PhoQ macrophage specific modulators of Salmonella virulence? journal Mol. Microbiol. volume 5 issue 9 pages 2073 2078 year 1991 pmid 1766380 doi 10.1111 j.1365 2958.1991.tb02135.x ref Rck outer membrane protein of the S. typhimurium virulence plasmid ref name ... Identification of a domain in Rck, a product of the Salmonella typhimurium virulence plasmid, required ... WS, Miller SI title A Salmonella typhimurium virulence protein is similar to a Yersinia enterocolitica ... protein OmpX from Escherichia coli reveals possible mechanisms of virulence journal Structure ... KB, Heusipp G, Young BM, Wachtel MR Mol Microbiol 2001 41 1053 1062. PMID 11555286 A bacterial virulence ... more details
Unreferenced date August 2009 Pertactin PRN is a highly immunogenic Virulencevirulence factor of Bordetella pertussis , a bacterium that causes pertussis . Specifically, it is an outer membrane protein that promotes Cell adhesion adhesion to Vertebrate trachea trachea l epithelial cell s. PRN is purified from Bordetella pertussis and is used for the vaccine production as one of the important components of acellular pertussis vaccine. Citation needed date August 2009 Category Microbiology biochem stub de Pertactin es Pertactina ... more details
Molecular Koch s postulates are a set of experimental criteria that must be satisfied to show that a gene found in a pathogenic microorganism encodes a product that contributes to the disease caused by the pathogen. Genes that satisfy molecular Koch s postulates are often referred to as virulence factors. The postulates were formulated by the microbiologist Stanley Falkow in 1988 and are based on Koch s postulates . ref Falkow S 1988 . Molecular Koch s postulates applied to microbial pathogenicity. Rev Infect Dis 10 suppl 2 S274 S276. ref The postulates as originally described by Dr. Falkow are as follows The phenotype or property under investigation should be associated with pathogenic members of a genus or pathogenic strains of a species . Additionally, the gene in question should be found in all pathogenic strains of the genus or species but be absent from nonpathogenic strains Citation needed date January 2009 . Specific inactivation of the gene s associated with the suspected virulence trait should lead to a measurable loss in pathogenicity or virulence . Virulence of the microorganism with the inactivated gene must be less than that of the unaltered microorganism in an appropriate animal model. Reversion or allelic replacement of the mutated gene should lead to restoration of pathogenicity. In other words, reintroduction of the gene into the microbe should restore virulence in the animal model. The gene, which causes virulence, must be expressed during infection. Immunity must be protective. For many pathogenic microorganisms, it is not currently possible to apply molecular Koch s postulates to a gene in question. Testing a candidate virulence gene requires a relevant animal model of the disease being examined and the ability to genetically manipulate the microorganism that causes the disease. Suitable animal models are lacking for many important human diseases. Additionally, many pathogens cannot be manipulated genetically. References references Category Epid ... more details
Intimin is a virulence factor adhesin of EPEC e.g. E. coli O127 H6 and EHEC e.g. E. coli O157 O157 H7 E. coli strains. It is an attaching and effacing A E protein which with other virulence factors is responsible for enteropathogenic and enterohemorrhagic enterohaemorrhagic diarrhoea . Intimin is expressed on the bacterial cell surface where it can bind to its receptor Tir receptor Tir Translocated intimin receptor . Tir, along with over 25 other bacterial proteins, is secreted from attaching and effacing E. coli directly into the cytoplasm of intestinal epithelial cells by a Type three secretion system . Once within the cytoplasm of the host cell, Tir is inserted into the plasma membrane, allowing surface exposure and intimin binding. External links http ca.expasy.org cgi bin get sprot entry?P43261 UniProt Swiss Prot page on Intimin Category Virulence factors Microbiology stub ... more details
M protein may refer to M protein Streptococcus , a virulence factor of the bacterium Streptococcus pyogenes . Another name for paraprotein , an abnormal protein in the urine or blood, often seen in multiple myeloma or Monoclonal gammopathy of undetermined significance MGUS . disambig ... more details
Fair use rationale in Virulence album It is contended that the use of this album cover in Virulence album qualifies as fair use, in the context of WP FUC wikipedias fair use criteria and applicable copyright laws, for the following reasons No free or public domain images have been located for this album. This image , a small portion of the overall copyrighted content, illustrates the cover of the album or associated single that is discussed in the article Virulence album . This image is used for identification purposes for the following reasons This image can be used to identify the album or associated single that is the subject of this article. The identification that this image provides could not be equally provided via prose alone as the album cover is directly related to the content within for the purpose of identification. This identification only qualifies when used in the article on Virulence album as this image is the cover of that album. This image greatly increase the readers ability to identify the album over any form of prose including traditional track listing and or an album description alone. It does not limit the copyright owner s rights to market or sell the album in any way. The image is of lower resolution than the original cover. The image is being used in an informative way and does not detract from sales of the album. Summary http www.fatwreck.com record detail 719 Licensing Non free album cover ... more details
Unreferenced stub auto yes date December 2009 Cleanup date March 2009 Pathogenicity is the ability of a pathogen to produce an infectious disease in an organism. It is often used interchangeably with the term virulence , although some authors prefer to reserve the latter term for descriptions of the relative degree of damage done by a pathogen. Virulence is the ability of an organism to invade the bloodstream. The pathogencity of a pathogen is determined by the pathogen s ability to produce toxins, its ability to enter tissue and colonize and its ability to spread from host to host. Category Virology Category Microbiology Category Infectious diseases Pathology stub de Pathogenit t he hu Patogenit s ja pl Chorobotw rczo ru ... more details
as a single unit to new cells, thus conferring virulence to formerly benign strains. Examples The Escherichia coli Urinary tract infection UPEC P fimbriae island contains virulence factors ... has genes regulating iron uptake and storage Salmonella SP1 and SP2 sites. Rhodococcus equi virulence plasmid pathogenicity island encoding virulence factors for proliferation in macrophages Facts about ... more details
PLCH may stand for Plch , a small village in the Czech Republic The Public Library of Cincinnati and Hamilton County , a public library system in Cincinnati , Ohio , USA Pulmonary Langerhans cell histiocytosis , a type of interstitial lung disease http www.ncbi.nlm.nih.gov protein NP 249535.1 Hemolytic phospholipase C plcH , a virulence factor of some strains of Pseudomonas aeruginosa Cassidy International Airport , is an airport with the ICAO airport code PLCH disambig ... more details
EAEC may refer to East Asia Economic Caucus , a regional free trade zone proposed in 1990 Enteroaggregative E. coli , a virulence property of Escherichia coli Eurasian Economic Community needs description European Atomic Energy Community , an international organisation which is legally distinct from the European Union, but has the same membership disambig pl EAEC ... more details
The Acronym and initialism initialism PVL may refer to Periventricular leukomalacia , the death of brain tissue, caused by lack of oxygen Parameter Value Language , the data markup language, used by NASA Panton Valentine leukocidin , a factor in bacterial virulence The paleontological collection of the Fundaci n Instituto Miguel Lillo, Universidad Nacional de Tucum n Program Validation Limited , a British company that developed SPARK The Pascack Valley Line , a commuter rail line operated by NJ Transit Peter Van Loan , a Canadian politician disambig ... more details
Orphan date February 2009 Cording , in mycobacteriology, refers to a tendency of some mycobacterium especially M. tuberculosis to grow end to end, giving them a rope or cord like appearance when viewed on a stained slide through a microscope. This growth pattern is due to cord factor , a glycolipid , and contributes to the virulence of the organism. References 1. Diagnostic Bacteriology A Study Guide, Margaret A. Bartelt, 2000, F.A. Davis Company. Category Bacteriology biology stub ... more details
restrictus . Hosts Pig s wild and domestic Goat s Horse s Sheep Cow Cattle Human s Virulence ... is regulated by virulence associated plasmids. Infect.Immun. 72 2 853 862, 2004. In PMID 14742529 ..., eventually resulting in massive tissue damage. Virulence plasmid All strains isolated from foals ... hosts, although this has not been established yet. Strains that lack the virulence plasmid are unable to proliferate in macrophages. This virulence plasmid has been characterised in detail from ... equi vap pathogenicity island seen through comparison of host associated vapA and vapB virulence ..., H. Dan, and J. F. Prescott. DNA sequence and comparison of virulence plasmids from Rhodococcus ... plasmids. In addition to the conserved region, the virulence plasmids contain a highly variable region ... . Pathogenicity island The variable region of the virulence plasmid contain genes that are highly ... of virulence plasmid gene expression of intra macrophage and in vitro grown Rhodococcus equi ATCC 33701 ... is a pathogenicity island that contains genes that are essential for virulence. br br A hallmark of the pathogenicity ... species. The most notable of these are the virulence associated protein vap genes. All foals ..., and M. K. Hondalus. Deletion of vapA encoding Virulence Associated Protein A attenuates the intracellular ... regulator VirR is required for expression of the virulence gene vapA of Rhodococcus equi ATCC 33701 ... vapA and vapB Virulence Plasmids. In Journal of Bacteriology . Volume 190, Number 17, September ... more details
Unreferenced stub date December 2009 For the Japanese record label Alchemy Records Japan Alchemy Records was a San Francisco Bay area independent record label , founded by Mark Deutrom and Victor Hayden . Partial discography 1985 Clown Alley band Clown Alley Circus of Chaos VM101 1986 The Grim Face of Betrayal VM??? 1986 Sacrilege B.C. Party With God VM??? 1987 The Melvins Gluey Porch Treatments VM102 1987 Rich Kids on LSD Rock n Roll Nightmare VM104 Re issued through Epitaph Records 1987 Neurosis band Neurosis Pain of Mind VM105 1987 Poison Idea War All the Time Poison Idea album War All The Time VM106 1988 Spiderworks Self titled VM??? 1988 Sacrilege B.C. Too Cool to Pray VM??? 1989 Paranoia band Paranoia Many Faces of Paranoia VM??? 1989 Virulence band Virulence If This Isn t a Dream... ALCHEMY 003 LP 1989 Guillotine band Guillotine Bring Down the Curtain VM??? See also List of record labels Category American record labels Category Record labels established in 1985 Category Record labels disestablished in 1989 Category American independent record labels US independent record label stub fr Alchemy Records tats Unis ... more details
In epidemiology , infectivity refers to the ability of a pathogen to establish an infection. More specifically, infectivity is a pathogen s capacity for horizontal transmission that is, how frequently it spreads among host biology host s that are not in a parent child relationship. It is closely related to the concept of incidence epidemiology incidence , which is the measure of infectivity in a population. Infectivity has been shown to correlation positively correlate with virulence . This means that as a pathogen s ability to infect a greater number of hosts increases, so does the level of harm it brings to the host. ref cite journal title An empirical study of the evolution of virulence under both horizontal and vertical transmission last1 Stewart first1 AD last2 Logsdon first2 JM last3 Kelley first3 SE journal Evolution year 2005 month April volume 59 issue 4 pages 730 739 doi 10.1554 03 330 pmid 15926685 ref A pathogen s infectivity is subtly but importantly different from its transmissibility epidemiology transmissibility , which refers to a pathogen s capacity to pass from parent to child. References reflist External links http www.medterms.com script main art.asp?articlekey 24094 Def med stub Category Epidemiology de Infektiosit t eo Infektebleco es Infectividad it Infettivit nl Besmettelijkheid pl Zaka no ... more details
PEST like sequence is present in LLO and is considered essential for virulence, since mutants lacking ... LIPI 1. ref Virulence Factors of Pathogenic Bacteria. http www.mgc.ac.cn cgi bin VFs pai.cgi?Genus ... Transcription of hly , as well as other virulence factors of L. monocytogenes within LIPI 1 ... M, Cossart P title An RNA thermosensor controls expression of virulence genes in Listeria monocytogenes ... temperature , PrfA protein, as well as listeriolysin O and other virulence factors regulated by PrfA ... more details
Phenol soluble modulins are a family of protein toxin s that are soluble in phenol phenols and produced by Methicillin resistant Staphylococcus aureus CA MRSA , which are thought to be the cause of severe infections. Non methicillin resistant bacteria were not found to produce these toxins. Although the toxins are produced in all Methicillin resistant Staphylococcus aureus strains, the more virulent CA MRSA strains are typically associated with higher production. Genetic analysis demonstrated that the PSM alpha protein, product of the psm alpha gene cluster , was associated with the enhanced virulence enhanced destruction of white blood cell s, presumably the key to the higher infectivity. Expression of the psm alpha genes appeared to vary, dependent upon unknown factors specific to each particular infection. ref R Wang et al. Identification of novel cytolytic peptides as key virulence determinants of community associated MRSA . Nature Medicine DOI 10.1038 nm1656 2007 . ref References references Category Staphylococcaceae Category Bacterial diseases Category Occupational safety and health Category Toxins ... more details
Aerobactin is a bacteria l siderophore found in Escherichia coli E. coli . ref cite journal author Johnson JR, Moseley SL, Roberts PL, Stamm WE title Aerobactin and other virulence factor genes among strains of Escherichia coli causing urosepsis association with patient characteristics journal Infect Immun. volume 56 issue 2 pages 405 12 year 1988 month February pmid 2892793 pmc 259296 url http iai.asm.org cgi pmidlookup?view long&pmid 2892793 ref It is a virulence factor enabling E. coli to sequester iron in iron poor environments, for example, the Urinary system urinary tract . ref cite book author Meyrier A editor Schrier RW, Cohen AH, Glassock RJ, Gr nfeld JP chapter Urinary Tract Infection title Atlas of diseases of the kidney publisher Blackwell Science location Oxford year 1999 isbn 0 632 04387 3 volume 2 url http www.kidneyatlas.org book2 adk2 07.pdf ref References reflist Category Escherichia coli molecular cell biology stub ... more details
Elek s test , also known as the immuno diffusion technique, is a virulence test performed upon Corynebacterium diphtheriae . ref name pmid4973065 cite journal author Schubert JH, Bickham ST, Wiggins GL title Tissue culture method for toxigenicity testing of Corynebacterium diphtheriae journal Appl Microbiol volume 16 issue 11 pages 1748 52 year 1968 month November pmid 4973065 pmc 547753 doi url ref It is used to test for toxigenicity of C. diphtheriae . It was characterized in 1949. ref name pmid15396422 cite journal author ELEK SD title The plate virulence test for diphtheria journal J. Clin. Pathol. volume 2 issue 4 pages 250 8 year 1949 month November pmid 15396422 pmc 1023322 doi 10.1136 jcp.2.4.250 url http jcp.bmj.com cgi pmidlookup?view long&pmid 15396422 ref External links http www.rahulgladwin.com noteblog bacteriology what is an eleks test.php Definition of Elek s test with diagrams. References Reflist microbiology stub de Elek Test Category Medical tests ... more details
Parasite load is a measure of the number and virulence of the parasite s that a host organism harbours. Quantitative parasitology deals with measures to quantify parasite loads in samples of hosts and to make statistical comparisons of parasitism across host samples. In evolutionary biology , parasite load has important implications for sexual selection and the evolution of sex . External links http www.zoo.ufl.edu Courses ZOO4926 2007Spring Bolker notes sexsel.html notes on parasite driven sexual selection from a parasite ecology evolution course Category Parasitology Category Parasitism Category Evolutionary biology parasite stub ecology stub ... more details
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