Similar Datasets
Project description:Rats were trained to orally self-administer alcohol in a concurrent, two-lever, free-choice contingency using a modification of the sweet solution fading procedure (O'Dell et al., 2004; Roberts et al., 2000; Vendruscolo et al., 2012). Following acquisition of self-administration, rats were allowed to self-administer unsweetened alcohol (10%) for 4 weeks and were then assigned to two groups matched by levels of responding: one group (dependent group) was exposed to chronic, intermittent ethanol vapors for 4 weeks to induce dependence; the other group (nondependent group) was not exposed to ethanol vapor. After a month of vapor exposure, rats were again tested during acute withdrawal (6-8 hours after removal from the vapor chambers) until stable levels of alcohol intake were achieved. As expected, alcohol vapor-exposed rats self-administered significantly greater amounts of alcohol than control rats not exposed to alcohol vapor during acute withdrawal. Rats were sacrificed during protracted abstinence (3 weeks after the end of alcohol vapor exposure) along with age-matched alcohol naive rats.
2014-11-13 | GSE60966 | GEO
Project description:Fifty 8-week-old C57BL/6J mice were randomly divided into five groups of ten mice. The study duration was 28 days and involved three phases, namely an adaptation phase (days 1M-^V7), a treatment phase (days 8-21), and a washout period (days 22-28). During the 14-days treatment period each mouse in the L. gasseri group, the pre-incubation group and the co-incubation group received a daily dose of 1 x 109 viable K7 cells, determined as colony forming units (cfu) on MRS agar, re-suspended in 100 M-5L of saline solution. The suspension was applied orally by the use of plastic feeding tubes for rodent oral gavage. A single dose of E. coli O157:H7 was applied on day 8 of trial (E. coli group, co-incubation group) and day 15 of trial (pre-incubation group). Each mouse received a dose of 5 x 108 viable E. coli O157:H7 cells, determined as colony forming units (cfu) on E. coli O157:H7 agar, re-suspended in 100 M-5L of saline solution. The suspension was applied intra-gastrically by the use of plastic feeding tubes for rodent oral gavage. Throughout the three phases of the study the animals were fed ad libitum a standard mouse diet and had access to water at all times. All mice were weighted weekly on days 0, 7, 14, 21, 28. Their feed intake was assessed weekly by measuring the remaining (unconsumed) food. Mice were also monitored twice daily for the clinical status and behavioral changes. End of the study period, mice were euthanized with CO2 and blood samples were obtained from the heart by cardiac puncture. For microarray analysis 300ul of blood from 4 mice in each group were transferred immediately after the cardiac puncture to tubes containing a pre-loaded RNA-later solution.
2014-01-31 | E-MEXP-3031 | biostudies-arrayexpress
Project description:Circadian rhythms are central to optimal physiological functioning and their interruption contributes to the development of several chronic diseases. Alcohol (EtOH) intoxication disrupts circadian rhythms within liver, brain, and intestines, but it is unknown whether alcohol also disrupts components of the core clock in skeletal muscle. Female C57BL/6Hsd mice were randomized to receive either saline (control) or alcohol (EtOH) (5g/kg) via intraperitoneal injection at the start of the dark cycle (ZT12), and gastrocnemius was collected every 4hr from Control and EtOH treated mice for the next 48hr following isoflurane anesthetization. In addition, metyrapone was administered prior to alcohol intoxication in separate mice to determine whether the alcohol-induced increase in serum corticosterone contributed to circadian gene regulation. Finally, synchronized C2C12 myotubes were treated with alcohol (100mM) to assess the influence of centrally or peripherally mediated effects of alcohol on the muscle clock. Alcohol significantly disrupted the mRNA expression of Bmal1, Per1/2, and Cry1/2 in addition to perturbing the clock-controlled genes, Myod1, Dbp, Tef, and Bhlhe40 (p<0.05). Alcohol increased serum corticosterone levels and glucocorticoid target genes, Redd1 and Klf15, in muscle. Metyrapone decreased serum corticosterone in EtOH mice but did not normalize the mRNA expression of Per1, Cry1 and Cry2 and Myod1 which were altered by EtOH. Alcohol did not alter core clock gene expression (Bmal, Per1/2, Cry1/2) at 4, 8, and 12hrs post treatment in synchronized C2C12 myotubes. Therefore, binge alcohol disrupted genes of the core molecular clock independently of elevated serum corticosterone.
2021-09-10 | GSE183665 | GEO
Project description:To investigate the effects of corn oil (CO), common drug vehicle, on the gene expression profiles in rat thymus with microarray technique. Female Wistar Rats were administered daily with normal saline (NS), CO 2, 5, 10 ml/kg for 14 days, respectively. Then, the thymus samples of rats were collected for microarray test and histopathology examination. The microarray data showed that 0, 40, 458 differentially expressed genes (DEGs) in 2, 5, 10 ml/kg CO group compared to NS group, respectively. The altered genes were associated with immune response, cellular response to organic cyclic substance, regulation of fatty acid beta-oxidation, et al. However, no obvious histopathologic change was observed in the three CO dosage groups. These data show that 10 ml/kg CO , that dosage has been determined as the vehicle in drug safety assessment , can cause obvious influence on gene expression in rat thymus. Our study suggest that the dosage of CO gavage as the vehicle for water-in-soluble agents in drug development should be no more than 5 ml/kg if agents’ molecular effects in thymus want to be assessed. Gene expression in thymus from female Wistar rats daily administered with 2, 5, 10 ml/kg of corn oil or 10 ml/kg of saline by gavage for 14 consecutive days were measured using Agilent Rat Whole Genome 8×*60K array.
2011-11-11 | E-GEOD-33005 | biostudies-arrayexpress
Project description:Alcohol (ethanol, EtOH) consumption during pregnancy can result in fetal alcohol spectrum disorders (FASDs), which are characterized by prenatal and postnatal growth restriction and craniofacial dysmorphology. The specific mechanisms by which alcohol mediates these injuries have yet to be determined. Cell-derived extracellular vesicles, including exosomes and microvesicles containing several species of RNAs (exRNAs), have recently emerged as a mechanism of cell-to-cell communication. However, EtOH’s effects on the biogenesis and function of non-coding exRNAs during fetal development have not been explored. Therefore, we studied the effects of maternal EtOH exposure on the composition of exRNAs in the amniotic fluid (AF) using a rat fetal alcohol exposure (FAE) model. Timed pregnant Sprague Dawley rats received 0 or 2.5 g/kg of 20% EtOH by oral gavage on embryonic days 5, 8, 10, 12 and 15. Through RNA-Seq analysis we identified and verified AF exosomal miRNAs with differential expression levels specifically associated with maternal EtOH exposure.
2019-06-11 | GSE132437 | GEO
Project description:To identify possible target molecules for acute alcohol intoxication therapy, we used microarray analysis to compare cerebella gene expression profiles of control and acute alcohol-intoxicated rats. We first established a model of acute alcohol intoxication in SD rats, and then used rat cDNA microarray to profile mRNA expression in the cerebella of alcohol-intoxicated rats (experimental group) and saline-treated rats (control group).
2013-07-29 | GSE49303 | GEO
Project description:To identify possible target molecules for acute alcohol intoxication therapy, we used microarray analysis to compare cerebella gene expression profiles of control and acute alcohol-intoxicated rats. We first established a model of acute alcohol intoxication in SD rats, and then used rat cDNA microarray to profile mRNA expression in the cerebella of alcohol-intoxicated rats (experimental group) and saline-treated rats (control group). A six chip study using total RNA recovered from three separate experimental groups and three separate control groups. We first established a model of acute alcohol intoxication in SD rats, and then used rat cDNA microarray to profile mRNA expression in the cerebella of alcohol-intoxicated rats (experimental group) and saline-treated rats (control group). Cerebellar tissues from three rats were ground to a mixed sample,so we use 3 rats in one group.
2013-07-29 | E-GEOD-49303 | biostudies-arrayexpress
Project description:Rats were trained to orally self-administer alcohol in a concurrent, two-lever, free-choice contingency using a modification of the sweet solution fading procedure (O'Dell et al., 2004; Roberts et al., 2000; Vendruscolo et al., 2012). Following acquisition of self-administration, rats were allowed to self-administer unsweetened alcohol (10%) for 4 weeks and were then assigned to two groups matched by levels of responding: one group (dependent group) was exposed to chronic, intermittent ethanol vapors for 4 weeks to induce dependence; the other group (nondependent group) was not exposed to ethanol vapor. After a month of vapor exposure, rats were again tested during acute withdrawal (6-8 hours after removal from the vapor chambers) until stable levels of alcohol intake were achieved. As expected, alcohol vapor-exposed rats self-administered significantly greater amounts of alcohol than control rats not exposed to alcohol vapor during acute withdrawal. Rats were sacrificed during protracted abstinence (3 weeks after the end of alcohol vapor exposure) along with age-matched alcohol naive rats. 96 gene expression profiles (GEP) were obtained from 8 brain regions believed to be relevant in alcoholM-bM-^@M-^Ys reinforcing properties using the Affymetrix RN230.2 platform. Specifically, the following brain regions were microdissected and analyzed from nondependent and dependent alcohol self-administering rats as well as age-matched alcohol naive rats: (a) medial prefrontal cortex (MPF), (b) shell and (c) core NAc sub-regions, (d) central nucleus (CeA) and (e) basolateral nucleus of the amygdala (BLA), (f) dorsolateral and (g) ventral bed nucleus of the stria terminalis (BNST), and (h) ventral tegmental area (VTA).
2014-11-13 | E-GEOD-60966 | biostudies-arrayexpress
Project description:Epigenome-wide profiling of DNAm in samples obtained from 10 rhesus macaques Edibles were administered prior to the animal’s daily chow to ensure consumption on an empty stomach and to confirm complete ingestion. Animals were slowly titrated up to 2.5mg/7kg/day of THC using published weight-based medical cannabis acclimation recommendations approximately 4 months prior to undergoing time-mated breeding. Each THC-exposed pregnant animal (n=5) continued to consume a daily edible of 2.5mg/7kg/day throughout pregnancy.
2023-09-11 | GSE223825 | GEO
Project description:To investigate the impact of THC exposure on placenta RNA/gene expression Edibles were administered prior to the animal’s daily chow to ensure consumption on an empty stomach and to confirm complete ingestion. Animals were slowly titrated up to 2.5mg/7kg/day of THC using published weight-based medical cannabis acclimation recommendations approximately 4 months prior to undergoing time-mated breeding. Each THC-exposed pregnant animal (n=5) continued to consume a daily edible of 2.5mg/7kg/day throughout pregnancy.
2022-10-24 | GSE216112 | GEO