نتایج جستجو برای: colonization

تعداد نتایج: 29408  

Journal: :archives of clinical infectious diseases 0
shahnaz armin pediatric infectious research center, shahid beheshti medical university, tehran, iran; pediatric infectious research center, shahid beheshti medical university, tehran, iran abdollah karimi pediatric infectious research center, shahid beheshti medical university, tehran, iran alireza fahimzad pediatric infectious research center, shahid beheshti medical university, tehran, iran fatemeh fallah pediatric infectious research center, shahid beheshti medical university, tehran, iran ahmadreza shamshiri school of health and institute of health research, tehran university of medical sciences, tehran, iran

background staphylococcus aureus (sa) is frequently found on normal human skin and mucous membranes. methicilline resistance s. aureus (mrsa) strains have spread in many hospital isolates world wide since 1970s. hospital personnel tend to have higher colonization rates than the general population. colonized residents and personnel are sources for dissemination of organism. materials and methods...

Journal: :jundishapur journal of microbiology 0
raheleh sheikhi health research institute, infectious and tropical diseases research center, jundishapur university of medical sciences, ahvaz, ir iran; department of microbiology, ahvaz jundishapur university of medical sciences, ahvaz, ir iran mansour amin health research institute, infectious and tropical diseases research center, jundishapur university of medical sciences, ahvaz, ir iran; department of microbiology, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; department of microbiology, school of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel: +98-6113367543, fax: +98-6113332036 soodabeh rostami infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, ir iran saeed shoja department of microbiology, ahvaz jundishapur university of medical sciences, ahvaz, ir iran nasim ebrahimi department of microbiology, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

background neisseria lactamica as one of the main commensal in oropharynx during the childhood is related to the induction of a natural immunity against meningococcal meningitis. also moraxella catarrhalis in oropharynx of children is a predisposing factor for otitis media infection. objectives the current study aimed to investigate the frequency of the n. lactamica, other nonpathogenic neisser...

Journal: :The American naturalist 2006
Marc William Cadotte Donny V Mai Samuel Jantz Michael D Collins Monica Keele James A Drake

The competition-colonization trade-off has long been considered an important mechanism explaining species coexistence in spatially structured environments, yet data supporting it remain ambiguous. Most competition-colonization research examines plants and the dispersal-linked traits of their seeds. However, colonization is more than just dispersal because rapid population growth is also an impo...

Journal: :Pediatrics 2012
Natalia Jimenez-Truque Sara Tedeschi Elizabeth J Saye Brian D McKenna Weston Langdon Jesse P Wright Andrew Alsentzer Sandra Arnold Benjamin R Saville Wenli Wang Isaac Thomsen C Buddy Creech

OBJECTIVE The study aimed to assess whether maternal colonization with Staphylococcus aureus during pregnancy or at delivery was associated with infant staphylococcal colonization. METHODS For this prospective cohort study, women were enrolled at 34 to 37 weeks of gestation between 2007 and 2009. Nasal and vaginal swabs for culture were obtained at enrollment; nasal swabs were obtained from w...

Journal: :The Journal of arthroplasty 2013
Antonia F Chen Alma E Heyl Peter Z Xu Nalini Rao Brian A Klatt

Staphylococcus decolonization prior to surgery is used to prevent surgical site infections (SSIs) after total joint arthroplasty (TJA). To determine if current treatment protocols result in successful decolonization of methicillin-sensitive S. aureus (MSSA) and methicillin-resistant S. aureus (MRSA), 106 consecutive patients were screened for nasal MSSA/MRSA colonization pre-operatively and on ...

Journal: :The Journal of infectious diseases 2004
Louis B Rice Viera Lakticová Marion S Helfand Rebecca Hutton-Thomas

We compared ceftriaxone and piperacillin-tazobactam at doses ranging from 0.1 to 2 times the human equivalent daily dose (HEDD), to determine their impact on gastrointestinal colonization by ampicillin- and vancomycin-resistant Enterococcus faecium C68 in a mouse model. Ceftriaxone failed to promote colonization at doses up to 0.25 times the HEDD, whereas piperacillin-tazobactam promoted coloni...

Journal: :American journal of perinatology 2013
Sarah M Page-Ramsey Sara K Johnstone David Kim Patrick S Ramsey

OBJECTIVE To determine whether group B Streptococcus (GBS)-colonized pregnant women have an increased prevalence of GBS colonization in subsequent pregnancies. STUDY DESIGN This retrospective cohort study compared the prevalence of GBS colonization in initial and subsequent pregnancies of 158 women with two or more deliveries at a Midwest institution since the initiation of universal screenin...

Journal: :iranian journal of veterinary science and technology 0
parviz tajik hesam kohsari babak qasemi-panahi iraj sohrabi-haghdoost abbas barin hamid ghasemzadeh-nava

identification of exogenous factors affecting spermatogonial stem cells (sscs) proliferation in vitro, provides worthy ways to study the basic biology of the cells. the aim of this study was to investigate the effects of a gnrh analogue (alareline acetate) on sscs colonization in short-term co-culture with sertoli cells. five, three-month old holstein male calves were used to isolate spermatogo...

Journal: :Nature communications 2012
George Livingston Miguel Matias Vincent Calcagno Claire Barbera Marine Combe Mathew A Leibold Nicolas Mouquet

One of the simplest hypotheses used to explain species coexistence is the competition-colonization trade-off, that is, species can stably coexist in a landscape if they show a trade-off between competitive and colonization abilities. Despite extensive theory, the dynamics predicted to result from competition-colonization trade-offs are largely untested. Landscape change, such as habitat destruc...

Journal: :Theoretical population biology 2016
Darren M Southwell Jonathan R Rhodes Eve McDonald-Madden Sam Nicol Kate J Helmstedt Michael A McCarthy

Increasing the colonization rate of metapopulations can improve persistence, but can also increase exposure to threats. To make good decisions, managers must understand whether increased colonization is beneficial or detrimental to metapopulation persistence. While a number of studies have examined interactions between metapopulations, colonization, and threats, they have assumed that threat dy...

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