PubMed · 13857564
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1960-06-18. LEPTOSPIROSIS.. https://pubmed.ncbi.nlm.nih.gov/13857564/
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Shewanella putrefaciens and Shewanella algae are Gram negative, nonfermentative and oxidative bacilli whose the main phenotypic feature is the production of hydrogen sulfide gas. Widespread in the environment, both S. putrefaciens and S. algae species are rare human bacteria although they are reported with increasing frequency as a cause of opportunistic infection in humans, such as skin and soft tissue infections and bacteremia. Chronic infections of the lower limbs and liver disease have been identified as risk factors for bloodstream infection, with a faster course and a poorer prognosis in the last case. S. algae appears to be more virulent than S. putrefaciens. Most human S. putrefaciens strains are isolated from bacterial flora, which puts to question its clinical significance. Molecular biology must be used for an adequate identification because S. algae can easily be mistaken for S. putrefaciens with usual tests.
Sepsis is life-treating state caused by overwhelming inflammatory response to infection accompanied by disregulation of non-specific immunity mechanisms. In this review we discussed influence of Gram-positive and Gram-negative bacterial virulence factors, cytokines as well as pathogen associated molecular pattern receptors (TLR-toll like receptors, peptydoglican recognition proteins, nucleotide binding oligomerization domains, triggering receptor expressed on myeloid cells-1) on the development and course of sepsis.