Project description:miRNA expression was profiled before and during liver regeneration following 2/3 partial hepatectomy (PHx) in chronic ethanol-fed (EtOH) and pair-fed carbohydrate control (CHO) rats. Prior to PHx, EtOH animals were fed a liquid diet containing 36% of the calories from ethanol for 5 weeks. Left lateral and medial (LLM) lobes were removed at time of PHx and used as t = 0 biological controls. Remnant liver tissue (PHx) was harvested 1 h, 6 h, 12 h, and 24 h after PHx. RNA from 4 biological replicates was pooled for profiling miRNA expression on Agilent Rat miRNA Microarrays v1.0. miRNA expression was profiled in the chronic ethanol-fed (EtOH) and carbohydrate control pair-fed (CHO) liver prior to (LLM) and 1 h, 6 h, 12 h, and 24 h after partial hepatectomy (PHx).
Project description:miRNA expression was profiled before and during liver regeneration following 2/3 partial hepatectomy (PHx) in chronic ethanol-fed (EtOH) and pair-fed carbohydrate control (CHO) rats. Prior to PHx, EtOH animals were fed a liquid diet containing 36% of the calories from ethanol for 5 weeks. Left lateral and medial (LLM) lobes were removed at time of PHx and used as t = 0 biological controls. Remnant liver tissue (PHx) was harvested 1 h, 6 h, 12 h, and 24 h after PHx. RNA from 4 biological replicates was pooled for profiling miRNA expression on Agilent Rat miRNA Microarrays v1.0.
Project description:In this study, we elucidated the role of miRNA dysregulation in liver regeneration after partial hepatectomy (PHx) in chronic ethanol-treated rats. Male Sprague-Dawley rats were fed a liquid diet containing 36% of total calories derived from ethanol for 5 weeks; corresponding pair-fed calorie-matched controls were fed diets in which ethanol calories were replaced by carbohydrate. After 5 weeks, locked nucleic acid (LNA)-modified oligo antisense to miR-21 (AM21, Exiqon) was used to inhibit miRNA in vivo, and rats were subjected to 70% PHx. Liver samples were collected at 6 h, 24 h and 72 h after the surgery. The excised liver samples at t=0 served as within-animal controls.NanoString rat miRNA panel was used to obtain miRNA expression profile from 48 liver samples.
Project description:In this study, we analyzed the role of miR-21 in liver regeneration after partial hepatectomy (PHx) in chronic ethanol-treated rats. Male Sprague-Dawley rats were fed a liquid diet containing 36% of total calories derived from ethanol for 5 weeks; corresponding pair-fed calorie-matched controls were fed diets in which ethanol calories were replaced by carbohydrate. After 5 weeks, locked nucleic acid (LNA)-modified oligo antisense to miR-21 (AM21, Exiqon, Vedbaek, Denmark) was used to inhibit miRNA in vivo, and rats were subjected to 70% PHx. Liver samples were collected at 24h after the surgery. The excised liver samples at t=0 served as within-animal controls. Rat Gene 2.0 ST (Affymetrix, Santa Clara, CA) arrays were used to obtain global gene expression data from pooled liver samples (pools of 3 or 4 biological replicates/array, total 8 arrays). Gene expression was profiled in AM21 treated or untreated chronic ethanol-fed (EtOH) and carbohydrate control pair-fed (CHO) rat liver prior to (control, t=0) and 24 h after 70% partial hepatectomy (PHx).
Project description:In this study, we analyzed the role of miR-21 in liver regeneration after partial hepatectomy (PHx) in chronic ethanol-treated rats. Male Sprague-Dawley rats were fed a liquid diet containing 36% of total calories derived from ethanol for 5 weeks; corresponding pair-fed calorie-matched controls were fed diets in which ethanol calories were replaced by carbohydrate. After 5 weeks, locked nucleic acid (LNA)-modified oligo antisense to miR-21 (AM21, Exiqon, Vedbaek, Denmark) was used to inhibit miRNA in vivo, and rats were subjected to 70% PHx. Liver samples were collected at 24h after the surgery. The excised liver samples at t=0 served as within-animal controls. Rat Gene 2.0 ST (Affymetrix, Santa Clara, CA) arrays were used to obtain global gene expression data from pooled liver samples (pools of 3 or 4 biological replicates/array, total 8 arrays).
Project description:In this study, we analyzed the effects of chronic alcohol consumption on liver repair and regeneration after partial hepatectomy (PHx). Rats were fed a liquid diet containing 36% of total calories derived from ethanol for 5 weeks; corresponding pair-fed calorie-matched controls were fed diets in which ethanol calories were replaced either by carbohydrate or by fat. After 5 weeks, rats were subjected to 70% PHx and liver samples were collected at 1, 6 and 24h after the surgery. The excised liver samples at t=0 served as within-animal controls. We used Affymetrix Rat Gene 1.0 ST arrays to obtain global gene expression data from each liver sample (n=4 replicate rats, 72 arrays total). Gene expression was profiled in the chronic ethanol-fed (EtOH) and carbohydrate control pair-fed (CHO) liver prior to (control) and 1 h, 6 h, 12 h, and 24 h after partial hepatectomy (PHx).