Unknown,Transcriptomics,Genomics,Proteomics

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Diosgenin supplementation effect on liver

ABSTRACT: Expression profile of liver of ICR mice (13-week old) treated with control diet (CRF-1) or CRF-1 containing 500 ppm diosgenin for 4 weeks. Nine-week old ICR mice were fed with a basal diet (CRF-1) or that containing 500 ppm diosgenin for 4 weeks ad libitum (n = 3 in each group). Food intake and body weight were measured on a weekly basis for the duration of the study.

ORGANISM(S): Mus musculus

SUBMITTER: Noriyuki Miyoshi

PROVIDER: E-GEOD-24580 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Bipolar disorder (BPD) is a debilitating heritable psychiatric disorder. Contemporary models for the manic pole of BPD have primarily utilized either single locus transgenics or treatment with psychostimulants. Our lab recently characterized a mouse strain, termed Madison (MSN), which naturally displays a manic phenotype, exhibiting elevated locomotor activity, increased sexual behavior, and higher forced swimming relative to control strains. Lithium chloride and olanzapine treatments attenuate this phenotype. In this study, we replicated our locomotor activity experiment, showing that MSN mice display generationally-stable mania relative to their outbred ancestral strain, hsd:ICR (ICR). We then performed a gene expression microarray experiment to compare hippocampus of MSN and ICR mice. We found dysregulation of multiple transcripts whose human orthologs are associated with BPD and other psychiatric disorders including schizophrenia and ADHD, including: Epor, Smarca4, Cmklr1, Cat, Tac1, Npsr1, Fhit, and P2rx7. RT-qPCR confirmed dysregulation for all of seven transcripts tested. Using a network analysis, we found dysregulation of a gene system related to chromatin packaging, a result convergent with recent human findings on BPD. Using a novel genomic enrichment algorithm, we found enrichment in genome regions homologous to human loci implicated in BPD in replicated linkage studies including homologs of human cytobands 1p36, 3p14, 3q29, 6p21-22, 12q24, 16q24, and 17q25. Our findings suggest that MSN mice represent a polygenic model for the manic pole of BPD showing much of the genetic systems complexity of the corresponding human disorder. Further, the high degree of convergence between our findings and the human literature on BPD brings up novel questions about evolution by analogy in mammalian genomes. In total, 12 total RNA samples were used for microarray analysis: 6 samples from Madison mice and 6 samples from ICR outbred mice. All samples were biological replicates.

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Diosgenin supplementation effect on liver

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