Cervicovaginal fluid and semen block the microbicidal activity of hydrogen peroxide produced by vaginal lactobacilli
نویسندگان
چکیده
منابع مشابه
Cervicovaginal fluid and semen block the microbicidal activity of hydrogen peroxide produced by vaginal lactobacilli
BACKGROUND H2O2 produced by vaginal lactobacilli is believed to protect against infection, and H2O2-producing lactobacilli inactivate pathogens in vitro in protein-free salt solution. However, cervicovaginal fluid (CVF) and semen have significant H2O2-blocking activity. METHODS We measured the H2O2 concentration of CVF and the H2O2-blocking activity of CVF and semen using fluorescence and in ...
متن کاملAssessing Activity and Characteristics of the Bacteriocins Produced by Lactobacilli from Local Yogurts of Behbahan City
Background and Objectives: Lactobacillus spp. are widely distributed in environment as well as dairy products. During the fermentation process, these microorganisms produce various compounds such as organic acids and bacteriocins with antimicrobial activities. The aims of this study were to isolate and identify lactobacilli from local yogurts of Behbahan, Iran, and assessment of antimicrobial a...
متن کاملThe implausible “in vivo” role of hydrogen peroxide as an antimicrobial factor produced by vaginal microbiota
In the cervicovaginal environment, the production of hydrogen peroxide (H2O2) by vaginal Lactobacillus spp. is often mentioned as a critical factor to the in vivo vaginal microbiota antimicrobial properties. We present several lines of evidence that support the implausibility of H2O2 as an "in vivo" contributor to the cervicovaginal milieu antimicrobial properties. An alternative explanation is...
متن کاملHydrogen evolution activity of NiMo-MoO2 produced by mechanical milling
In this study, mechanical alloying was done by a high-energy planetary ball milling technique. A mixture of NiO and MoO3 and graphite powders were used as initial materials. After milling of powder mixture with 40 wt.% additional graphite, a temperature of 400, 550 and 1000 °C for 1 h was considered for the heat treatment of powder mixture. Also, powder mixtures containing 60, 80 and 100 wt.% a...
متن کاملHydrogen peroxide production by lactobacilli promotes epithelial restitution during colitis
Inflammatory bowel disease (IBD) is a multifactorial chronic inflammatory disease of the gastrointestinal tract, characterized by cycles of acute flares, recovery and remission phases. Treatments for accelerating tissue restitution and prolonging remission are scarce, but altering the microbiota composition to promote intestinal homeostasis is considered a safe, economic and promising approach....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BMC Infectious Diseases
سال: 2010
ISSN: 1471-2334
DOI: 10.1186/1471-2334-10-120