... a recent study of ours employing the powerful pyrosequencing technique on stools of subjects with regressive autism showed that Desulfovibrio was… - Sydney M. 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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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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Anaerobic or mixed anaerobic-aerobic pulmonary infection is important both in community-acquired disease and in the hospital setting. Its principal causes are aspiration of oral or gastic contents and of organisms involved in periodontal disease. Indeed, pneumonia following aspiration is undoubtedly the most common type of hospital-acquired pneumonia and as such is a major cause of death and disability in hospitalized patients. Both endogenous oral flora (primarily anaerobes and viridans streptococci) and hospital-acquired oral or gastric flora (such as Staphylococcus aureus, various members of the Enterobacteriaceae family, and Pseudomonas) may be involved in the infections. The principal complications are tissue destruction (necrotizing pneumonia), abscess formation, and thoracic empyema.

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Anaerobic bacteria produce many different enzymes that are of importance in providing nutrients to the bacterial cell, as virulence factors, and in permitting organisms to colonize or survive under adverse conditions (including exposure to antimicrobial agents). Some enzymes effect several types of modifications to bile acids, neutral steroids, and corticosteroids. Anaerobes are clearly important in a variety of infections in humans and animals as well as in various other types of pathologic processes.

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