AIM: To study the secretory inhibitor of platelet microbicidal protein (SIPMP) phenotypes of faecal anaerobic isolates from patients with diarrhea. METHODS: Faecal isolates of anaerobic bacteria (B. fragilis, n = 42; ...AIM: To study the secretory inhibitor of platelet microbicidal protein (SIPMP) phenotypes of faecal anaerobic isolates from patients with diarrhea. METHODS: Faecal isolates of anaerobic bacteria (B. fragilis, n = 42; B. longum, n = 70; A. israelii, n = 21; E. lentum, n = 12) from children with diarrhea were tested. SIPMP production was tested by inhibition of platelet microbicidal protein (PMP) bioactivity against B. subtilis and was expressed as percentage of inhibition of PMP bactericidal activity. RESULTS: Among anaerobic isolates 80% of B. longum strains, 85.7% of A. israelii strains, 50% of E. lentum strains and 92.86% of B. fragilis strains were SIPMP-positive. The isolated anaerobic organisms demonstrated SIPMP production at a mean level of 13.8% ± 0.7%, 14.7% ± 1.8%, 3.9% ± 0.9% (P < 0.05) and 26.8% ± 7.5% (P < 0.05) for bifidobacteria, A. israelii, E. lentum and B. fragilis, respectively. CONCLUSION: Data from the present study may have significant implications in understanding the pathogenesis of microecological disorders in the intestine, as well as for future improvement in the prevention and therapy of anaerobe-associated infections.展开更多
基金The Russian Foundation of Basic Research and Government of Orenburg region, No. 07-04-97624 and No. 08-04-99105
文摘AIM: To study the secretory inhibitor of platelet microbicidal protein (SIPMP) phenotypes of faecal anaerobic isolates from patients with diarrhea. METHODS: Faecal isolates of anaerobic bacteria (B. fragilis, n = 42; B. longum, n = 70; A. israelii, n = 21; E. lentum, n = 12) from children with diarrhea were tested. SIPMP production was tested by inhibition of platelet microbicidal protein (PMP) bioactivity against B. subtilis and was expressed as percentage of inhibition of PMP bactericidal activity. RESULTS: Among anaerobic isolates 80% of B. longum strains, 85.7% of A. israelii strains, 50% of E. lentum strains and 92.86% of B. fragilis strains were SIPMP-positive. The isolated anaerobic organisms demonstrated SIPMP production at a mean level of 13.8% ± 0.7%, 14.7% ± 1.8%, 3.9% ± 0.9% (P < 0.05) and 26.8% ± 7.5% (P < 0.05) for bifidobacteria, A. israelii, E. lentum and B. fragilis, respectively. CONCLUSION: Data from the present study may have significant implications in understanding the pathogenesis of microecological disorders in the intestine, as well as for future improvement in the prevention and therapy of anaerobe-associated infections.
