View clinical trials related to Microbial Colonization.
Filter by:The investigators are doing a study on the bacteria that normally live in the vagina and what effect, if any, Depo-Provera has on the bacteria. Women 13-24 years of age, who are HIV negative, being seen in a clinic for birth control or sexually transmitted disease (STD) check-up, or have a child and are planning to receive a Depo-Provera shot for contraception or have declined the use of hormonal contraception may join.
This project aims to establish the correlation between intestinal microbiota with inflammatory biomarkers, intestinal morphology, vascular reactivity and degree of hepatic fibrosis in patients with different degrees of glucose tolerance and body adiposity.
Antibiotic resistance has emerged world wide and is of major concern. Multi-drug resistant (MDR) bacteria is widely spread and is now a major factor in morbidity and mortality in health-care settings. Among MDRs, carbapenem-resistant Enterobacteriaceae (CRE) are of special concern, receiving the highest classification of "urgent threat level" in the US President Report. Consistent mortality rates of 40-50% are observed among inpatients with infections caused by CRE in hospitals worldwide, related mainly to unavailable, delayed or ineffective antibiotic treatment options. The extremely high mortality rates of patients with CRE infections have driven efforts to prevent the acquisition and spread of these bacteria in hospitals. These include screening for carriage, contact isolation of carriers, cohorting, dedicated healthcare staff and other infection control measures. These strategies have been proven as effective but are cumbersome and expensive. In most locations these strategies failed to completely eradicate CRE endemicity. CRE decolonization (eradication of colonization) might offer a double benefit - reducing the risk for the individual carrier to develop an infection due to the resistant strain (by that, potentially lowering the mortality risk) and preventing the bacteria from spreading to other patients, exposing them to the same hazard. Fecal microbiota transplantation (FMT), in which fecal material enriched with commensal microorganisms is transferred from a healthy donor, have proven efficacy in the treatment of recurrent Clostridium difficile infection (CDI) in multiple trails. Major adverse events that has been reported so far are mostly related to the route of administration (aspiration during nasogastric tube administration/colonoscopy). Other adverse events include mostly GI related symptoms (diarrhea, nausea, belching) and are self limited and resolve in few hours. FMT seems to be safe and effective both in immunocompetent and immunocompromised patients. The high efficacy of FMT in the treatment of a multi-drug resistant pathogen such as Clostridium difficile, suggest that it might be an efficient tool for other MDR pathogens (e.g. CRE). The authors aim to assess the effects of FMT on colonization and clinical infections with CRE. The potential of FMT to restore the gut microbiome and compete with residual resistant strains offer a novel way to fight the current MDR epidemic. The authors will apply FMT on a cohort of CRE carriers in a single center in Israel. FMT will be given by capsules for 2 consecutive days followed by rectal sampling at predefined timepoint in the following 6 months.
This is a prospective study with three specific aims: (1) To convene a consensus conference to develop a guideline for antibiotic use in infants (age < 3 yrs) with suspected ventilator-associated infection; (2) To evaluate outcomes before and after implementation of the antibiotic guideline; (3) To evaluate changes in the tracheal microbiome over the course of mechanical ventilation
Our trial try to eradicate digestive tract colonization of patient harboring Extreme Drug Resistant (XDR) bacteria by performing a fecal transplantation.
The composition of gastric microbiota is determined by the status of Helicobacter pylori infection. In subjects who have never been infected by H. pylori, gastric microbiota includes various bacteria, creating ideal microbial diversity. This ideal microbial diversity is destroyed by H. pylori infection at low intragastric pH. Since it is difficult for most bacteria to proliferate within an acidic stomach, relative H. pylori abundance gives rise to microbial dysbiosis. Conversely, unideal microbial diversity is often observed in infected individuals with impaired gastric secretory ability at hypochlorhydric condition. Bacteria producing carcinogenic N-nitrosamine compounds are often detected in individuals with past or chronic H. pylori infection at high intragastric pH. Nonetheless, microbial imbalance that occurs in the earlier phase before gastric carcinognenesis is uncertain.