Project description:Microarray profiling single and repeated immobilization stress responses in gene expression in rat adrenal medulla Keywords: Stress responses
Project description:Microarray profiling single and repeated immobilization stress responses in gene expression in rat adrenal medulla Experiment Overall Design: Immobilization stress (IMO) was performed with 2-hour once and 2-hour daily for 6 days repeated. Control groups were not exposed to stress (absolute controls). Following the last IMO, rats were euthanized by decapitation and both adrenal medulla tissues were dissected from the animal. Total RNA were isolated and the array experiments were done by Affymetrix. Data analysis will be performed by GeneTraffic program.
Project description:Stress is a major risk factor for many cardiovascular and neuropsyhological disorders, and involved changes in gene expression Determine target genes affected by single or repeated immboilization stress. Stress triggers alterations in gene expresssion of many proteins, especially transcription factors. The target genes of repeated stress partially overlap, but differ from those altered by single stress. Sprague Dawley male rats were exposed to single 2 hr immobilization stress or 2 hrs immbolization stress each for six consecultive days. Controls for single stress were untreated, and controls for repeated stress were handled for six days. Keywords: dose response
Project description:Stress is a major risk factor for many cardiovascular and neuropsyhological disorders, and involved changes in gene expression; Determine target genes affected by single or repeated immboilization stress. Stress triggers alterations in gene expresssion of many proteins, especially transcription factors. The target genes of repeated stress partially overlap, but differ from those altered by single stress. Sprague Dawley male rats were exposed to single 2 hr immobilization stress or 2 hrs immbolization stress each for six consecultive days. Controls for single stress were untreated, and controls for repeated stress were handled for six days.
Project description:Zonal Gene Expression and Gene Regulatory Network Responses in Centrilobular and Periportal Hepatocytes Following Repeated Exposure to TCDD (2,3,7,8-tetrachlorodibenzo-p-dioxin)
Project description:Inflammation is a key component of pathological angiogenesis. Here we induce cornea neovascularisation using sutures placed into the cornea, and sutures are removed to induce a regression phase. We used whole transcriptome microarray to monitor gene expression profies of several genes
Project description:Few studies have assessed the patterns of parasite populations of rodents over a longitudinal gradient in Chile. In this work, the gastrointestinal helminthic fauna of invasive rodents in Chile was examined to assess the association between their presence/absence and abundance with latitude, host sex, and host body condition, and to assess the coexistence and correlation of the abundance between parasite species. Rodents were obtained from 20 localities between 33 and 43°S. Helminths were extracted from the gastrointestinal tract and identified morphologically. Overall, 13 helminth taxa were obtained. The most frequently identified parasite species was Heterakis spumosa, and the most abundant was Syphacia muris, while Physaloptera sp. was the most widely distributed. No locality presented with a coexistence that was different from that expected by chance, while the abundance of five helminthic species correlated with the abundance of another in at least one locality, most likely due to co-infection rather than interaction. Host sex was associated with parasite presence or abundance, and female sex-biased parasitism was notably observed in all cases. Body condition and latitude presented either a positive or negative association with the presence or abundance of parasites depending on the species. It is notable that the likely native Physaloptera sp. is widely distributed among invasive rodents. Further, gravid females were found, suggesting spillback of this species to the native fauna. The low frequency and abundance of highly zoonotic hymenolepid species suggest that rodents are of low concern regarding gastrointestinal zoonotic helminths.