Anaerobes are prevalent on all mucosal surfaces and virtually all anaerobic infections are endogenous. Two thirds of anaerobic infections involve fiv… - Sydney M. Finegold

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Anaerobes are prevalent on all mucosal surfaces and virtually all anaerobic infections are endogenous. Two thirds of anaerobic infections involve five anaerobic organisms or groups—the Bacteroides fragilis group, the Bacteroides melaninogenicus-Bacteroides asaccharolyticus group, Fusobacterium nucleatum, the anaerobic cocci, and Clostridium perfringens. Conditions that lower the oxidation-reduction potential and disrupt the mucosal surface (eg, vascular problems, malignant neoplasms, and surgery) lead to infection with anaerobes. Clues to anaerobic infection include foul odor, gas, tissue destruction, underlying malignant neoplasms, and the unique appearance of certain anaerobes on Gram's stain. Specimens must be collected to avoid normal flora and transported to the laboratory under anaerobic conditions. Therapy involves surgical débridement and drainage and the use of various antimicrobial agents. Antimicrobial agents must be used for extended periods to avoid relapse.

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About Sydney M. Finegold

Sydney "Sid" Martin Finegold (August 21, 1921 – September 17, 2018) was an American physician, medical school professor, and researcher in infectious diseases caused by anaerobic bacteria. He was elected in 1971 a Fellow of the American Academy for the Advancement of Science.

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Alternative Names: Sydney Martin Finegold
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... a recent study of ours employing the powerful pyrosequencing technique on stools of subjects with regressive autism showed that Desulfovibrio was more common in autistic subjects than in controls. We subsequently confirmed this with pilot cultural and real-time PCR studies and found siblings of autistic children had counts of Desulfovibrio that were intermediate, suggesting possible spread of the organism in the family environment. Desulfovibrio is an anaerobic bacillus that does not produce spores but is nevertheless resistant to aerobic and other adverse conditions by other mechanisms and is commonly resistant to certain antimicrobial agents (such as cephalosporins) often used to treat ear and other infections that are relatively common in childhood. This bacterium also produces important virulence factors and its physiology and metabolism position it uniquely to account for much of the pathophysiology seen in autism.

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The bacteria typically described from biliary tract infection include Escherichia coli, Klebsiella, Enterobacter, and enterococci. It has also been recognized for some time that Clostridium perfringens may occasionally be involved in serious complications of biliary tract infection such as sepsis and emphysematous cholecystitis. Other anaerobes, including various Bacteroides and Fusobacterium sp, clostridia other than C perfringens, anaerobic cocci and streptococci, and Actinomyces have been reported from a variety of biliary tract infections, usually as single case reports ... More recently, several reports indicate that anaerobes, and especially B fragilis, may be more common in biliary tract infections than had been appreciated ... Anaerobes have been recovered in approximately 40% of such infections; B fragilis is the most common anaerobe encountered. Anaerobes may also be found, as aerobes are, in asymptomatic bactibilia.

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