Project description:Genetic variability of transcript abundance in pig skeletal muscle at slaughtering. The 325 pigs (females and barrows) used in gene expression analyses are part of a larger F2 population of 1,000 animals, setup within the framework of a QTL detection program. These animals were produced as a second generation intercross between two commercial sire lines (F016, Pietrain type line, and FH019, synthetic line from Hampshire, Duroc and Large-White founders, FRANCE-HYBRIDES, St Jean de Braye, France).
Project description:Transcriptional profiling between two different skeletal muscles (Longissimus and Semimembranosus) in pig The 90 pigs (females and barrows) used in gene expression analyses are part of a larger F2 population of 1,000 animals, setup within the framework of a QTL detection program. These animals were produced as a second generation intercross between two commercial sire lines (F016, Pietrain type line, and FH019, synthetic line from Hampshire, Duroc and Large-White founders, FRANCE-HYBRIDES, St Jean de Braye, France).
Project description:Campylobacter jejuni causes food- and water-borne gastroenteritis, and as such must survive passage through the stomach in order to reach the gastrointestinal tract. While little is known about how C. jejuni survives transit through the stomach, its low infectious dose suggests it is well equipped to sense and respond to acid shock. In this study, the transcriptional profile of C. jejuni NCTC 11168 was obtained after exposure to in vitro acid shock. Keywords: acid shock; in vitro study; time course
Project description:Campylobacter jejuni causes food- and water-borne gastroenteritis, and as such must survive passage through the stomach in order to reach the gastrointestinal tract. While little is known about how C. jejuni survives transit through the stomach, its low infectious dose suggests it is well equipped to sense and respond to acid shock. In this study, the transcriptional profile of C. jejuni NCTC 11168 was obtained after exposure to in in vivo (piglet stomach) acid shock. Keywords: acid shock; in vivo study; transit through the host stomach
Project description:We characterized the bacterial diversity of chlorinated drinking water from three surface water treatment plants supplying the city of Paris, France. For this purpose, we used serial analysis of V6 ribosomal sequence tag (SARST-V6) to produce concatemers of PCR-amplified ribosomal sequence tags (RSTs) from the V6 hypervariable region of the 16S rRNA gene for sequence analysis. Using SARST-V6, we obtained bacterial profiles for each drinking water sample, demonstrating a strikingly high degree of biodiversity dominated by a large collection of low-abundance phylotypes. In all water samples, between 57.2-77.4% of the sequences obtained indicated bacteria belonging to the Proteobacteria phylum. Full-length 16S rDNA sequences were also generated for each sample, and comparison of the RSTs with these sequences confirmed the accurate assignment for several abundant bacterial phyla identified by SARST-V6 analysis, including members of unclassified bacteria, which account for 6.3-36.5% of all V6 sequences. These results suggest that these bacteria may correspond to a common group adapted to drinking water systems. The V6 primers used were subsequently evaluated with a computer algorithm to assess their hybridization efficiency. Potential errors associated with primer-template mismatches and their impacts on taxonomic group detection were investigated. The biodiversity present in all three drinking water samples suggests that the bacterial load of the drinking water leaving treatment plants may play an important role in determining the downstream community dynamics of water distribution networks.
