Influence of reactive oxygen species produced by activated leukocytes at the level of apoptosis in mature human spermatozoa.

Human spermatozoa incubated with polymorphonuclear leukocytes and Escherichia coli showed a significant increase in the annexin V binding (P<.05). This increase was similar to that obtained when spermatozoa were incubated with polymorphonuclear leukocytes activated by phorbol-12-myristate-13-acetate.

[Comparison of Shigella susceptibility to commonly used antimicrobials in the Temuco Regional Hospital, Chile 1990 - 2001].

Background: The permanent surveillance of antimicrobial susceptibility of Shigella sp in the Temuco Regional Hospital, allowed us to define the empirical use of antimicrobials in dysenteric syndrome.

Aim: To study antimicrobial susceptibility of Shigella strains collected from 1997 to May 2001 and compare the results with those reported in 1990.

Material And Methods: Two hundred and seventeen Shigella strains, coming from stool cultures of pediatric patients, were studied.