Project description:The objective of this study was to test the hypothesis that innate differences in gene expression in the brain could; contribute to the differences in alcohol drinking or response to alcohol between adult male inbred alcohol-preferring (iP) and -non-preferring; (iNP) rats. Gene expression was determined in the nucleus accumbens (ACB), amygdala (AMYG), frontal cortex (FC), caudate-putamen (CPU) and; hippocampus (HIP) of alcohol-naïve adult male iP and iNP rats, using Affymetrix Rat Genome U34A microarrays (n = 6/strain). Significant differences between the two strains for each region were determined using Statistical Analysis of Microarrays (SAM). Using a false discovery rate threshold of 0.2, there were 46 genes with higher expression in iP rats and 61 genes with lower expression in; the ACB, 111 genes with higher and 56 genes with lower expression in the AMYG, 61 genes with higher and 25 genes with lower expression in the FC,; 39 genes with higher and 42 genes with lower expression in the CPU, and 35 genes with higher and 51 genes with lower expression in the HIP. In the AMYG, iP rats had higher expression of genes that are involved in neuronal growth and neurogenesis, e.g., brain derived neurotrophic factor,; neuritin, etc. In contrast, in the ACB, iP rats had lower expression of genes involved in neurogenesis or cellular plasticity,; e.g. cyclin E, vascular endothelial growth factor A. Many of the differences were in genes involved in intracellular signaling,; cell membranes, extracellular matrix, and metabolism. These regional gene differences between the iP and iNP rat lines may contribute to; the divergent alcohol drinking phenotypes of these rats. Experiment Overall Design: Brain regions (accumbens, amygdala, frontal cortex, hippocampus, and striatum) from 6 biologic replicates of the selected inbred alcohol preferring and non-preferring lines iP5C and iNP1 were dissected and subjected to microarray analysis for comparison.
Project description:The objective of this study was to test the hypothesis that innate differences in gene expression in the brain could contribute to the differences in alcohol drinking or response to alcohol between adult male inbred alcohol-preferring (iP) and -non-preferring (iNP) rats. Gene expression was determined in the nucleus accumbens (ACB), amygdala (AMYG), frontal cortex (FC), caudate-putamen (CPU) and hippocampus (HIP) of alcohol-naïve adult male iP and iNP rats, using Affymetrix Rat Genome U34A microarrays (n = 6/strain). Significant differences between the two strains for each region were determined using Statistical Analysis of Microarrays (SAM). Using a false discovery rate threshold of 0.2, there were 46 genes with higher expression in iP rats and 61 genes with lower expression in the ACB, 111 genes with higher and 56 genes with lower expression in the AMYG, 61 genes with higher and 25 genes with lower expression in the FC, 39 genes with higher and 42 genes with lower expression in the CPU, and 35 genes with higher and 51 genes with lower expression in the HIP. In the AMYG, iP rats had higher expression of genes that are involved in neuronal growth and neurogenesis, e.g., brain derived neurotrophic factor, neuritin, etc. In contrast, in the ACB, iP rats had lower expression of genes involved in neurogenesis or cellular plasticity, e.g. cyclin E, vascular endothelial growth factor A. Many of the differences were in genes involved in intracellular signaling, cell membranes, extracellular matrix, and metabolism. These regional gene differences between the iP and iNP rat lines may contribute to the divergent alcohol drinking phenotypes of these rats. Keywords: alcohol, inbred, rat, gene expression, brain, nucleus accumbens, amygdala, frontal cortex, hippocampus, caudate-putamen
Project description:The objective of this study was to determine common innate differences in gene expression in the nucleus accumbens shell among the selectively bred (a) alcohol-preferring (P) vs. alcohol-non-preferring (NP) rats: (b) high-alcohol-drinking (HAD) vs. low-alcohol-drinking (LAD) rats (both replicates); (c) ALKO alcohol (AA) vs. nonalcohol (ANA) rats; and (d) Sardinian alcohol-preferring (sP) vs. alcohol-nonpreferring (sNP) rats.
Project description:The objective of this study was to determine common innate differences in gene expression in the Central Nucleus of the Amygdala (CeA) among the selectively bred (a) alcohol-preferring (P) vs. alcohol-non-preferring (NP) rats: (b) high-alcohol-drinking (HAD) vs. low-alcohol-drinking (LAD) rats (both replicates); (c) ALKO alcohol (AA) vs. nonalcohol (ANA) rats; and (d) Sardinian alcohol-preferring (sP) vs. alcohol-nonpreferring (sNP) rats.
Project description:RNA-seq was performed on the nucleus accumbens of female (F) interval-specific congenic strain-B (P.NP-ISCS-B) and inbred alcohol preferring (iP) control rat
Project description:The objective of this study was to determine common innate differences in gene expression in the nucleus accumbens shell among the selectively bred (a) alcohol-preferring (P) vs. alcohol-non-preferring (NP) rats: (b) high-alcohol-drinking (HAD) vs. low-alcohol-drinking (LAD) rats (both replicates); (c) ALKO alcohol (AA) vs. nonalcohol (ANA) rats; and (d) Sardinian alcohol-preferring (sP) vs. alcohol-nonpreferring (sNP) rats. Comparison of Differences in Gene Expression in the Nucleus Accumbens Shell of 5 Pairs of Rat Lines Selectively Bred for High or Low Alcohol Consumption.
Project description:The objective of this study was to determine common innate differences in gene expression in the Central Nucleus of the Amygdala (CeA) among the selectively bred (a) alcohol-preferring (P) vs. alcohol-non-preferring (NP) rats: (b) high-alcohol-drinking (HAD) vs. low-alcohol-drinking (LAD) rats (both replicates); (c) ALKO alcohol (AA) vs. nonalcohol (ANA) rats; and (d) Sardinian alcohol-preferring (sP) vs. alcohol-nonpreferring (sNP) rats. Comparison of Differences in Gene Expression in the Central Nucleus of the Amygdala (CeA) of 5 Pairs of Rat Lines Selectively Bred for High or Low Alcohol Consumption.
Project description:Bone mineral density and structure candidate gene analysis in alcohol-non-preferring (NP), alcohol-preferring (P), congenic NP (NP.P) and congenic P (P.NP) rats Genetic mapping in alcohol-preferring (P) and alcohol-non-preferring (NP) rats has identified a major quantitative trait locus (QTL) in the region between q22 – q34 on chromosome (Chr) 4 for alcohol preference. In a separate genome-wide linkage study, using inbred Fischer 344 (F344) and Lewis (LEW) rats, several QTL linked to bone density and structure were identified at the same location suggesting that bone mass and strength genes might co-segregate with genes that regulate the alcohol preference trait. The aim of this study is to identify the genes segregating for skeletal phenotypes and alcohol trait in congenic P/NP rats. We compared bone mineral content (BMC), areal/volumetric bone mineral density (aBMD/vBMD) and biomechanical strength at different skeletal sites from 6-month-old inbred and congenic P/NP rats. Transfer of the NP Chr 4 QTL into P background significantly increased body weight but decreased BMC, aBMD/vBMD in whole body, cranium, femur, and lumbar vertebrae. On the other hand, transfer of P Chr 4 QTL into NP background significantly decreased body weight but increased BMC and aBMD in the same skeletal sites. Microarray analysis was performed from the femurs of 4-week-old rats (n = 5 per strain) using Affymetrix Rat Genome 230 2.0 arrays. A total of 53 genes, including 41 candidate genes and 12 predicted genes, were differentially expressed among all strains of rats with a false discovery rate (FDR) less than 10%. Several candidate genes from microarray analysis were found to be were strongly correlated (r2>0.50) with different skeletal phenotypes. Gene expression of top 3 candidate genes from microarray profiling was validated by quantitative real-time PCR (qRT-PCR). Ingenuity pathway analysis revealed relationships among the candidate genes related to bone metabolism including pathways related to beta-estradiol, tumor necrosis factor and androgen receptor. Keywords: Comparison of gene expression profiles between NP, P, NP.P and P.NP rats
Project description:Bone mineral density and structure candidate gene analysis in alcohol-non-preferring (NP), alcohol-preferring (P), congenic NP (NP.P) and congenic P (P.NP) rats; Genetic mapping in alcohol-preferring (P) and alcohol-non-preferring (NP) rats has identified a major quantitative trait locus (QTL) in the region between q22 â?? q34 on chromosome (Chr) 4 for alcohol preference. In a separate genome-wide linkage study, using inbred Fischer 344 (F344) and Lewis (LEW) rats, several QTL linked to bone density and structure were identified at the same location suggesting that bone mass and strength genes might co-segregate with genes that regulate the alcohol preference trait. The aim of this study is to identify the genes segregating for skeletal phenotypes and alcohol trait in congenic P/NP rats. We compared bone mineral content (BMC), areal/volumetric bone mineral density (aBMD/vBMD) and biomechanical strength at different skeletal sites from 6-month-old inbred and congenic P/NP rats. Transfer of the NP Chr 4 QTL into P background significantly increased body weight but decreased BMC, aBMD/vBMD in whole body, cranium, femur, and lumbar vertebrae. On the other hand, transfer of P Chr 4 QTL into NP background significantly decreased body weight but increased BMC and aBMD in the same skeletal sites. Microarray analysis was performed from the femurs of 4-week-old rats (n = 5 per strain) using Affymetrix Rat Genome 230 2.0 arrays. A total of 53 genes, including 41 candidate genes and 12 predicted genes, were differentially expressed among all strains of rats with a false discovery rate (FDR) less than 10%. Several candidate genes from microarray analysis were found to be were strongly correlated (r2>0.50) with different skeletal phenotypes. Gene expression of top 3 candidate genes from microarray profiling was validated by quantitative real-time PCR (qRT-PCR). Ingenuity pathway analysis revealed relationships among the candidate genes related to bone metabolism including pathways related to beta-estradiol, tumor necrosis factor and androgen receptor. Experiment Overall Design: Comparison of differentially expressed genes between 4q22-4q34 on chromosome 4 in NP, P, NP.P and P.NP rats.