Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling by array of brain from zebrafish treated with ethanol or nicotine suggests conservation of neuro-adaptation pathways

ABSTRACT: Effect of ethanol or nicotine exposure on gene expression compared to control. Duplicate arrays from ethanol or nicotine treated animals compared with triplicate arrays from paired control animals. In total 4 treatment arrays (2 ethanol, 2 nicotine) and 3 control arrays (from control animals treated in parallel with ethanol-treated fish and nicotine-treated fish.)

ORGANISM(S): Danio rerio

SUBMITTER: Caroline Brennan

PROVIDER: E-MEXP-1301 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Gene expression changes in a zebrafish model of drug dependency suggest conservation of neuro-adaptation pathways.

Kily Layla J M LJ Cowe Yuka C M YC Hussain Osman O Patel Salma S McElwaine Suzanne S Cotter Finbarr E FE Brennan Caroline H CH

The Journal of experimental biology 20080501 Pt 10

Addiction is a complex psychiatric disorder considered to be a disease of the brain's natural reward reinforcement system. Repeated stimulation of the 'reward' pathway leads to adaptive changes in gene expression and synaptic organization that reinforce drug taking and underlie long-term changes in behaviour. The primitive nature of reward reinforcement pathways and the near universal ability of abused drugs to target the same system allow drug-associated reward and reinforcement to be studied i ...[more]

PMID: 18456890

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Project description:Nonsyndromic cleft palate is a common birth defect (1:700) with a complex etiology involving both genetic and environmental risk factors. Nicotine, a major teratogen present in tobacco products, was shown to cause alterations and delays in the developing fetus. To demonstrate the effect of nicotine on craniofacial development, particularly palatogenesis, we delivered three different doses of nicotine (1.5, 3.0 and 4.5 mg/kg/day) into pregnant BALB/c mice throughout their entire pregnancy using subcutaneous osmotic mini-pump. We assessed the pups for morphological anomalies, as well as genome-wide mRNA (transcriptome) microarray analysis. Consistent administration of nicotine caused developmental retardation, still birth, low birth weight, and significant palatal size and shape abnormality in the pups. However, it did not cause obvious cleft palate. The microarray data analysis using IPA identified differential expression of genes involved in various biological pathways, particularly cancer, genetic diseases, and tissue development in response to consistent nicotine exposure. 6232 up-regulated and 6310 down-regulated genes were detected in nicotine-treated groups compared to the control. Moreover, 45% of the genes associated with cleft palate were found to be affected by nicotine. Alterations of a subset of differentially expressed genes were illustrated with hierarchal clustering and RT-PCR. We concluded that consistent nicotine exposure during pregnancy interferes with normal growth and development of the fetus including palatogenesis; however, this interference does not result in cleft palate, rather smaller palate size with persistent MES. To our knowledge, this is the first experiment revealing the impact of nicotine on the fetal palate transcriptome in mice. Total 8 samples were analyzed. Using an osmotic minipump, duplicate samples from palates of either sterile physiological saline or nicotine (1.5 mg/kg/day, 3.0 mg/kg/day, or 4.5 mg/kg/day)-treated newborn pups.

Dataset Information

Transcription profiling by array of brain from zebrafish treated with ethanol or nicotine suggests conservation of neuro-adaptation pathways

Publications

Gene expression changes in a zebrafish model of drug dependency suggest conservation of neuro-adaptation pathways.

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