https://www.wikidoc.org/index.php?title=Streptococcus_viridans&feed=atom&action=history
Streptococcus viridans - Revision history
2024-03-29T00:26:01Z
Revision history for this page on the wiki
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https://www.wikidoc.org/index.php?title=Streptococcus_viridans&diff=1110050&oldid=prev
Becca Cohen at 20:31, 12 June 2015
2015-06-12T20:31:55Z
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>If they are introduced into the bloodstream they have the potential of causing [[endocarditis]], particularly in individuals with damaged [[heart valve]]s.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>If they are introduced into the bloodstream they have the potential of causing [[endocarditis]], particularly in individuals with damaged [[heart valve]]s.</div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Image: Group A streptococcus27.jpeg| Blood culture specimen, depicts numbers of Gram-positive, a-hemolytic viridans streptococci group bacteria. <SMALL><SMALL>''[http://phil.cdc.gov/phil/home.asp From Public Health Image Library (PHIL).] ''<ref name=PHIL> {{Cite web | title = Public Health Image Library (PHIL) | url = http://phil.cdc.gov/phil/home.asp}}</ref></SMALL></SMALL></ins></div></td></tr>
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Becca Cohen
https://www.wikidoc.org/index.php?title=Streptococcus_viridans&diff=769170&oldid=prev
C Michael Gibson at 17:19, 8 October 2012
2012-10-08T17:19:49Z
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C Michael Gibson
https://www.wikidoc.org/index.php?title=Streptococcus_viridans&diff=769168&oldid=prev
C Michael Gibson at 17:19, 8 October 2012
2012-10-08T17:19:30Z
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<p><b>New page</b></p><div>{{Taxobox<br />
| color = lightgrey<br />
| name = ''Streptococcus'' viridans-group<br />
| image = Streptococcus_viridans_01.png<br />
| image_width = 240px<br />
| regnum = [[Eubacteria]]<br />
| phylum = [[Firmicutes]]<br />
| classis = [[Bacilli]]<br />
| ordo = [[Lactobacillales]]<br />
| familia = [[Streptococcaceae]]<br />
| genus = '''''Streptococcus'''''<br />
}}<br />
{{CMG}}<br />
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==Overview==<br />
'''''Streptococcus''''' '''viridans''' is a ''pseudo-taxonomic'' term for a large group of generally non-pathogenic, [[commensal]] [[Streptococcus|streptococcal]] bacteria that are either [[Hemolysis (microbiology)|α-hemolytic]] and produce a green (hence the name ''viridans'') coloration on blood [[agar plates]], or non-hemolytic.<ref name=Sherris>{{cite book | author = Ryan KJ, Ray CG (editors) | title = Sherris Medical Microbiology | edition = 4th ed. | pages=293-4 |publisher = McGraw Hill | year = 2004 | isbn =0838585299 }}</ref><br />
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==Identification==<br />
Viridans streptococci can be differentiated from ''[[Streptococcus pneumoniae]]'' using an [[optochin]] test, as ''Viridans'' streptococci are optochin resistant; they also lack either the [[polysaccharide]]-based [[Capsule (microbiology)|capsule]] typical of ''S. pneumoniae'' or the [[Serovar|Lancefield antigens]] of the [[pyogenic]] members of the [[genus]].<ref name=Baron>{{cite book | author = Patterson MJ| chapter = Streptococcus | title = Baron's Medical Microbiology (Baron S ''et al'', eds.)| edition = 4th ed. | publisher = Univ of Texas Medical Branch | year = 1996 | url = http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mmed.chapter.824 | isbn = 0-9631172-1-1 }}</ref> <br />
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==Pathology==<br />
The organisms are most abundant in the mouth and one member of the group, ''[[Streptococcus mutans|S. mutans]]'', is the [[etiologic]] agent of [[dental caries]]. Others may be involved in other mouth or gingival infections. <br />
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If they are introduced into the bloodstream they have the potential of causing [[endocarditis]], particularly in individuals with damaged [[heart valve]]s.<br />
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==References==<br />
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C Michael Gibson