Project description:The purpose of this study is to determine whether the presence of pathogenic Escherichia coli in colon is associated with psychiatric disorders.
Project description:Despite the characterization of many aetiologic genetic changes. The specific causative factors in the development of sporadic colorectal cancer remain unclear. This study was performed to detect the possible role of Enteropathogenic Escherichia coli (EPEC) in developing colorectal carcinoma.
Project description:An M307 G/A point mutation of FUT1 gene has been considered as a usful marker to select the piglets that are sensitive(GG/AG genotype) or resistant(AA) to Escherichia coli F18 in foreign pig breeds.However,it is not suitable to Chinese native breeds. Duodenal tissues were collected from 8 full-sib pairs of Sutai pigs (a new hybrid between the Duroc and Taihu breeds) at the age of 28-day differing in adhesion phenotype to find the differential genes that can be used as the candidate genes fit for Chinese native breeds. piglets at the age of 28-day sensitive (GG/AG genotype) to Escherichia coli F18 vs resistant(AA) ones.Biological replicates:8 full-sib pairs of Sutai pigs (4 pairs for GG/AA genotype of FUT1 gene, 4 pairs for AG/AA genotype)
Project description:Here we report the results of a study comparing the global transcriptional responses of Escherichia coli to two well-studied CAMPs, LL37 and colistin, and two ceragenins with related structures, CSA13 and CSA131. We found that E. coli responds similarly to both CAMPs and ceragenins by inducing a Cpx envelope stress response. However, whereas E. coli exposed to CAMPs increased expression of genes involved in colanic acid biosynthesis, bacteria exposed to ceragenins specifically modulated functions related to phosphate transport, indicating distinct mechanisms of action between these two classes of molecules. Overall, this study suggests that while some bacterial responses to ceragenins overlap with those induced by naturally-occurring CAMPs, these synthetic molecules target the bacterial envelope using a distinctive mode of action.
Project description:An M307 G/A point mutation of FUT1 gene has been considered as a usful marker to select the piglets that are sensitive(GG/AG genotype) or resistant(AA) to Escherichia coli F18 in foreign pig breeds.However,it is not suitable to Chinese native breeds. Duodenal tissues were collected from 8 full-sib pairs of Sutai pigs (a new hybrid between the Duroc and Taihu breeds) at the age of 28-day differing in adhesion phenotype to find the differential genes that can be used as the candidate genes fit for Chinese native breeds.
Project description:An M307 G/A point mutation of FUT1 gene has been considered as a usful marker to select the piglets that are sensitive(GG/AG genotype) or resistant(AA) to Escherichia coli F18 in foreign pig breeds. However,it is not suitable to Chinese native breeds. Duodenal tissues were collected from 3 full-sib pairs of Sutai pigs (a new hybrid between the Duroc and Taihu breeds) at the age of 28-day differing in adhesion phenotype to find the differential miRNAs that can provide the basis for analyzing the different mechanisms of E.coli F18 resistance between foreign and Chinese native breeds,as well as for breeding for disease resistance in Chinese native breeds in the future.
Project description:Escherichia coli (E. coli) amine oxidase (ECAO) encoded by tynA gene has been one of the model enzymes to study the mechanism of oxidative deamination of amines to the corresponding aldehydes by amine oxidases. The biological roles of ECAO have been less addressed. Therefore we have constructed a gene deletion Escherichia coli K-12 strain, E. coli tynA-, and used the microarray technique to address its function by comparing the total RNA gene expression to the one of the wt. Our results suggest that tynA is a reserve gene for stringent environmental conditions and its gene product ECAO a growth advantage compared to other bacteria due to H2O2 production.
