نتایج جستجو برای: lyta
تعداد نتایج: 205 فیلتر نتایج به سال:
It was previously proposed that autolysin's primary role in the virulence of pneumococci was to release pneumolysin to an extracellular location. This interpretation came into question when pneumolysin was observed to be released in significant amounts from some pneumococci during log-phase growth, because autolysis was not believed to occur at this time. We have reexamined this phenomenon in d...
BACKGROUND Indoor smoke exposure is common in developing countries and may influence nasopharyngeal (NP) pneumococcal colonization density and risk of acute respiratory illness. We compared colonization density among Andean children living in households previously enrolled in a randomized controlled trial of a home intervention package including improved stoves to reduce smoke, kitchen sinks, a...
We report an autopsy case of rapid progressive Waterhouse-Friderichsen syndrome (WFS) associated with Streptococcus pneumonia infection in a previously healthy man. Although he once visited a hospital about 6 hours before death, the both physical and serological examination did not show any sign of overwhelming infection. Autopsy showed massive adrenal hemorrhage without inflammation, and showe...
We investigate the role of hyaluronic acid (HA) on S. pneumoniae in vitro biofilm formation and evaluate gene expressions of virulence and/or biofilm related genes. Biofilms were grown in medium supplied with HA derived from capsule of Streptococcus equi. The biomasses of biofilms were detected by crystal-violet (CV) microtiter plate assay, and the morphology was viewed under scanning electron ...
چکیده زمینه و هدف: دو مکانیسم اصلی مقاومت به ماکرولیدها در باکتری استرپتوکوکوس نمونیه متیلاسیون 23S rRNA و پمپ یونی (افلوکس) میباشد. هدف از این پژوهش، ارزیابی مکانیسمهای مولکولی یاد شده در سویههای استرپتوکوکوس نمونیه جدا شده از بخش مراقبتهای ویژه شهر شیراز میباشد. روش بررسی: این پژوهش یک بررسی مقطعی-توصیفی است که بر روی 50 سویه استرپتوکوکوس نمونیه جدا شده از بیماران بستر در بخشهای مراق...
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