ABSTRACT: The capacity of a microbial synbiotic to rescue the in vitro metabolic activity of the gut microbiome following perturbation with alcohol or antibiotics
Project description:The proper mammalian oocytes maturation is recognized as reaching MII stage and accumulation of mRNA and proteins in cell cytoplasm following fertilization. The proper course of folliculogenesis and oogenesis is orchestrated with morphogenesis significantly influencing further zygote formation and embryos growth. This study was aimed to determinate new transcriptomic markers of porcine oocytes morphogenesis associated with cell maturation capacity. We used microarrays to detail the global programme of gene expression underlying changes before and after in vitro maturation of oocytes in sus scrofa
Project description:Synbiotics are a combination of probiotics and prebiotics which can alter the composition of the gastrointestinal tract evoking beneficial effects throughout the body through the production of a battery of bioactive metabolites. In this study, a synbiotic was used to reduce the behavioral and biochemical symptoms of depression and this nanostring panel was used to decipher where along the gut-brain-axis the synbiotic-derived metabolites were invoking their beneficial effects on the immune system. The synbitoic was composed of two probiotic bacteria (Lactobacillus fermentum ATCC 793 and Bifidobacteria longum ATCC 15707 and a grape -derived prebiotic composed of grape seed polyphenol extract, resveratrol and a concord grape extract. Male mice (C57BL/6) were pretreatment with either nothing (control), BDPP, probiotic or synbiotic and underwent 28 days of chronic unpredicitable stress. After 28 days, animals' behavior reflected an increase in depressive- and anxiety-like behavior, rescued specifically by the synbiotic. This nanostring multiplex analysis reveals both tissue- and treatment-specific effects on immune modulators.
Project description:We report the application of next generation sequencing technology for high-throughput profiling of total RNA to determine the expression of all genes expressed in human primary hepatocytes derived from three healthy (drug/tobacco/alcohol free) volunteers in response to anti-tuberculosis antibiotics, including, rifampin, rifabutin and rifapentine through comparison with gene profiles of vehicle (methanol) treated and untreated cells. We determined the response of over 22,000 genes expressed in human primary hepatocytes following rifampin, rifabutin and rifapentine treatment for 72h. We found that several drug metabolizing enzymes, including cytochrome P450 3A4 and drug transporters are differentially expressed in human primary hepatocytes in response to rifamycin antibiotics. We utilized the information generated with differential gene expression study to determine interaction of rifamyicn antibiotics with antiviral, antibacterial, antifungal agents and other drugs used to treat several ailments in tuberculosis patients. This study provides a comprehensive profiles of genes expressed in response to rifamycin antibiotics towards characterization of their drug interactions with the drugs that are combined to treat various viral, bacterial, fungal and other diseases, including cancer.
Project description:A mutant of SG511 (wild type isolate), resistant to the presence of chitosan (polycationic molecule) was obtained following serial passage experiments resistance to chitosan exposition. Transcriptomic experiments showed alteration in the expression of genes involved in the cell wall regulon resulting in the modification of susceptibility phenotype against cell wall active antibiotics
Project description:Objectives: Colistin remains a last-line treatment for multidrug-resistant Acinetobacter baumannii and combined use of colistin and carbapenems has shown synergistic effects against multidrug-resistant strains. In order to understand the bacterial responses to these antibiotics we analysed the transcriptome of A. baumannii following exposure to each.
