RNA-Seq of femoral shaft RNA from Catalase knockout (KO) and wild-type (WT) male mice at 12 weeks of age given binge ethanol or control PBS for four consecutive days.
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA747715 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR15182438_1.fastq.gz | Fastqsanger.gz | |||
| SRR15182438_2.fastq.gz | Fastqsanger.gz | |||
| SRR15182439_1.fastq.gz | Fastqsanger.gz | |||
| SRR15182439_2.fastq.gz | Fastqsanger.gz | |||
| SRR15182440_1.fastq.gz | Fastqsanger.gz |
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Project description:The objective was to determine how binge ethanol and knockout of the catalase gene affect the transcriptome of the femoral shaft in mice.
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2008-06-12 | E-GEOD-3298 | biostudies-arrayexpress
Project description:Adolescent binge alcohol exposure has been previously shown to have long-lasting effects on the expression of hypothalamic genes that regulate the stress response, even in the absence of subsequent adult alcohol exposure. Those data suggested that alcohol can induce permanent gene expression changes, potentially through epigenetic modifications. Importantly, epigenetic modifications can be transmitted to future generations therefore, in these studies we investigated the effects of adolescent binge alcohol exposure on hypothalamic gene expression patterns in the F1 generation offspring. It has been well documented that maternal alcohol exposure during fetal development can have devastating neurological consequences. However, less is known about the consequences of maternal and/or paternal alcohol exposure outside of the gestational time frame. Here, we exposed adolescent male and female rats to a repeated binge EtOH exposure paradigm and then mated them in adulthood. Hypothalamic samples were taken from the offspring of these animals at postnatal day (PND) 7 and subjected to a genome-wide microarray analysis followed by qRT-PCR for selected genes. Importantly, the parents were not intoxicated at the time of mating and were not exposed to EtOH at any time during gestation therefore, the offspring were never directly exposed to EtOH. Our results showed that the offspring of alcohol-exposed parents had significant differences in the expression of hypothalamic genes that mediate neurogenesis and synaptic plasticity during neurodevelopment, genes important for directing chromatin remodeling, posttranslational modifications or transcription regulation, as well as genes involved in regulation of obesity and reproductive function. These data demonstrate that repeated binge alcohol exposure during pubertal development can potentially have detrimental effects on future offspring even in the absence of direct fetal alcohol exposure. Male and female Wistar rats were purchased from Charles River Laboratories (Wilmington, MA) at weaning (postnatal day (PND) 23) and allowed to acclimate for 7 days after arrival. Animals were handled for 5 min./once/day beginning at PND 30. Pubertal EtOH exposure began on PND 37, which is defined as peri-puberty. Animals were undisturbed following the first exposure of our binge EtOH exposure paradigm until PND 68 (late puberty/early adult) at which time they received a second exposure to the same treatment paradigm. During the duration of the experiment, males and females were separately housed in pairs on a 12:12 light/dark cycle with lights on at 0700 h with food and water available ad libitum. Binge Exposure Paradigm and Treatment Design. Rats were handled 5min./once/day for 7 d prior to treatment to control for nonspecific stress responses. At 37 d, animals were given 3 g/kg EtOH (20% v/v in tap water; N = 3/sex), or tap water alone (N = 3/sex), once/day via oral gavage at 10:00 AM to avoid disrupting normal feeding patterns. This process was repeated according to the following schedule for a total duration of 8 consecutive days: 3 d EtOH, 2 d tap water, 3 d EtOH. Control animals were given tap water alone once/day for 8 consecutive days. Our previous studies showed that this repeated binge-pattern EtOH paradigm does not affect body weight/growth curves and consistently results in blood alcohol concentrations (BAC) of 150-180 mg/dl in males and 210-240 mg/dl in females. We and others have previously used this paradigm as a model for the pattern of binge alcohol consumption observed in adolescents and BAC achieved are similar to those observed in humans following a binge drinking episode . After peri-pubertal treatments, animals were left undisturbed in their home cage until PND 68 when each group was again exposed to their respective treatment (i.e. control or binge EtOH. We waited 24 hours after the last dose of EtOH to ensure that blood alcohol concentrations in the parents were undetectable at the time of mating (data not shown). Animals were grouped into mating pairs: binge male + binge female (N = 3 pairs); water male + water female (N = 3 pairs). All of the females gave birth to 12-16 pups approximately 28 d after being housed with a male, indicating that conception took place approximately 6 d after pairing; therefore, the pups were never directly exposed to alcohol at any time. At PND 7 pups were deeply anesthetized on ice and sacrificed. Brains were rapidly removed, the hypothalamus microdissected on ice, and then stored in -80ºC until further processing for a genome-wide analysis on hypothalamic total RNA samples using a chip-based microarray (Southern California Genotyping Consortium, SCGC, Illumina Rat Ref-12). The PND 7 time point was chosen because the extent of rat neurodevelopment at PND 7 is roughly equivalent to that of a human infant at birth
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Project description:Mid-shaft fracture stimulates bone lengthening by increasing linear growth at the growthplate. This project studied changes in mRNA in the proximal growthplate after a mid-shaft fracture in a rat model. Keywords: time course, fracture, growthplate, rat
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Project description:Study the global genes expression in mouse aorta endothelial cells (MAECs) overexpressing human catalase (hcatTg).
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Project description:Study the global genes expression in mouse aorta endothelial cells (MAECs) overexpressing human catalase (hcatTg). The wild type and overexpressing human catalase (hcatTg) MAECs grown to 80% confluence in six-well plates were made quiescent in serum-free DMEM for 12 h and then cultured in 10% FBS DMEM for 12 h. Total RNA was extracted with Trizol® reagent and purified by Rneasy Mini kit. Two independent wild type and two hcatTg total RNA samples were performed microarray with GeneChip® Mouse gene 1.0 ST array (Affymetrix, USA).
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Project description:The objective of this study was to determine changes in gene expression within the extended amygdala following binge-like alcohol drinking by adolescent alcohol-preferring (P) rats. Starting at 28 days of age, P rats were given concurrent access to 15 and 30 % ethanol for 3 one-h sessions for 5 consecutive days each week until they were 49 days old. Rats were killed by decapitation 3 h after the first ethanol access session on the 15th day of drinking. RNA was prepared from micropunch samples of the nucleus accumbens shell (Acb-sh) and central nucleus of the amygdala (CeA). Ethanol intakes were 2.5 to 3.0 g/kg/session. There were 154 and 182 unique named genes that significantly differed (FDR = 0.2) between the water and ethanol group in the Acb-sh and CeA, respectively. Gene Ontology (GO) analyses indicated that adolescent binge drinking produced changes in the in biological processes involved in cell proliferation and regulation of cellular structure in the Acb-sh, and in neuron projection and positive regulation of cellular organization in the CeA. Ingenuity Pathway Analysis indicated that, in the Acb-sh, there were several major intracellular signaling pathways (e.g., cAMP-mediated and protein kinase A signaling pathways) altered by adolescent drinking, with 3-fold more genes up-regulated than down-regulated in the alcohol group. The cAMP-mediated signaling system was also up-regulated in the CeA of the alcohol group. Weighted gene co-expression network analysis (WGCNA) indicated significant G-protein coupled receptor signaling and transmembrane receptor protein kinase signaling categories in the Acb-sh and CeA, respectively. Overall, the results of this study indicated that binge-like alcohol drinking by adolescent P rats is differentially altering the expression of genes in the Acb-sh and CeA, some of which are involved in intracellular signaling pathways and may produce long-term changes in neuronal function. Differences in gene expression in the central nucleus of the amygdala (CeA) were compared in two groups of alcohol-preferring (P) rats, one given water only and the other given access to 15 & 30% ethanol during adolescence.
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