نتایج جستجو برای: nasal microbial flora
تعداد نتایج: 174448 فیلتر نتایج به سال:
Life in desert soil is marked by episodic pulses of water and nutrients followed by long periods of drought. While the desert flora and fauna flourish after rainfall the response of soil microorganisms remains unclear and understudied. We provide the first systematic study of the role of soil aqueous habitat dynamics in shaping microbial community composition and diversity. Detailed monitoring ...
Growing research on the human microbiome, even beyond the gastrointestinal area, is not surprising mainly due to significant advances in study methods. Current reporting in this area is so intensive that clinicians are changing the unsuitable "bacterial flora" expression for more appropriate terms such as "microbiota" (the entire microbial community colonizing an ecologic niche), "microbiome" (...
Most periapical lesions resolve after root canal treatment of teeth with primary infections. Over the last decade there has been a renewed focus on post-treatment apical periodontitis and its etiology. This review describes the microbiota associated with persistent post-treatment infection, including microbial identification, ecology, and environmental selection. Compared with untreated teeth, ...
Regulation of intestinal inflammation by microbiota following allogeneic bone marrow transplantation
Despite a growing understanding of the link between intestinal inflammation and resident gut microbes, longitudinal studies of human flora before initial onset of intestinal inflammation have not been reported. Here, we demonstrate in murine and human recipients of allogeneic bone marrow transplantation (BMT) that intestinal inflammation secondary to graft-versus-host disease (GVHD) is associat...
It has been hypothesized that the environment can influence the composition of the nasal microbiota. However, the direct influence of pig farming on the anterior and posterior nasal microbiota is unknown. Using a cross-sectional design, pig farms (n=28) were visited in 2014-2015 and nasal swabs from 43 pig farmers and 56 pigs as well as 27 air samples taken in the vicinity of pig enclosure were...
AIM The objective of the present study was to identify the microbial flora within root canals of teeth with failed root-canal treatment and to determine the association of the various species with clinical features. METHODOLOGY Sixty root-filled teeth with persisting periapical lesions were selected for this study. During nonsurgical endodontic re-treatment, the root-filling material was remo...
Sutures under selective host/environmental factors can potentiate postoperative surgical site infection (SSI). The present investigation characterized microbial recovery and biofilm formation from explanted absorbable (AB) and nonabsorbable (NAB) sutures from infected and noninfected sites. AB and NAB sutures were harvested from noninfected (70.9%) and infected (29.1%) sites in 158 patients. At...
BACKGROUND To determine the effect of opium smoking cessation on the frequency and type of microorganisms in the nasopharynx of opium smokers. METHODS This was a cross-sectional study performed in psychology and ENT department of Moradi Hospital of Rafsanjan University of Medical Sciences in 2008 (Kerman, Iran). Nasopharyngeal cultures were taken from 50 opium smokers before and 2 to 3 months...
OBJECTIVE Conventional diagnosis of bacterial vaginosis contains some controversial points. To understand accurately the relationship between clinical stages and the microbiotas, the intravaginal microbial flora was analyzed by the clone library method. STUDY DESIGN Vaginal fluid samples from 31 patients were examined. Lactobacillary grade, Nugent score, culture-based method, and clone librar...
F ollowing the serendipitous discovery of penicillin in 1928 and streptomycin in 1943, the pharmaceutical industry has been screening thousands of soil samples for antimicrobial agents produced by inhabitant microbes. Chloramphenicol, clavulanic acid, erythromycin, gentamicin, rifampin, teicho-planin, tetracycline, and vancomycin represent only a few products of this spectacularly successful ef...
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