نتایج جستجو برای: oropharyngeal colonization
تعداد نتایج: 37498 فیلتر نتایج به سال:
A type 1 pilus-deficient mutant of a systemically invasive Escherichia coli K1 strain was constructed by directed mutagenesis of pilA, the gene that codes for the major structural subunit of type 1 pili. By comparing this mutant with an isogenic pilA+ strain, we were able to assess the role of type 1 piliation in alimentary tract colonization and bloodstream invasion in neonatal rats. Intestina...
TO THE EDITOR—We read with interest the recent article by Winokur et al, in which they developed a safe experimental human model of nontypeable Haemophilus influenzae (NTHi) nasopharyngeal colonization [1]. In their study, both nasopharyngeal wash specimens and nasopharyngeal swab specimens were collected to culture NTHi. Colonization was detected in nasopharyngeal wash samples from 9 subjects ...
Pneumocystis jirovecii is a symbiotic respiratory fungus that presents in 2 clinical forms: pneumonia in immunocompromised patients or colonization, defined by the presence of the organism without associated clinical symptoms. Currently, diagnosis requires invasive bronchoscopy, which may not be available in some settings and is inappropriate for detecting colonization in healthy individuals. N...
The pharmacokinetics of ciprofloxacin and its effect on the oropharyngeal bacterial flora were examined in 21 ill patients being treated for methicillin-resistant Staphylococcus aureus infections or colonization or both. Oral ciprofloxacin (750 mg twice a day) produced peak and trough concentrations in serum of 2.56 +/- 1.80 and 0.97 +/- 0.81 micrograms/ml and steady-state salivary and nasal se...
To understand the Candida colonization of human immunodeficiency virus (HIV)-infected outpatients in Taiwan, we have conducted a prospective cohort study of Candida colonization and its risk factors at the National Taiwan University Hospital from 1999 to 2002. More than 50% of the patients were colonized with Candida species, and 12% developed symptomatic candidiasis. Patients colonized with fl...
Ventilator-associated pneumonia is preceded by lower-respiratory-tract colonization by pathogenic microorganisms that derive from endogenous or exogenous sources. Most ventilator-associated pneumonias are the result of exogenous nosocomial colonization, especially, pneumonias caused by resistant bacteria, such as methicillin-resistant Staphylococcus aureus and multi-resistant Acinetobacter baum...
The impact of antiretroviral therapy (ART) on opportunistic conditions in HIV patients continues to evolve. We specifically studied the changing epidemiology of oropharyngeal candidiasis (OPC) in 215 HIV/AIDS patients. Status of yeast colonization was assessed from oral rinse samples, and preliminary yeast identification was made using CHROMagar Candida and confirmed with standard microbiologic...
A continuously mixed series of microbial communities inhabits various points of the respiratory tract, with community composition determined by distance from colonization sources, colonization rates, and extinction rates. Ecology and evolution theory developed in the context of biogeography is relevant to clinical microbiology and could reframe the interpretation of recent studies comparing com...
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