1. Hippocampal transcriptome reveals novel targets of FASD pathogenesis
- Author
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Raine Lunde-Young, Marcus Orzabal, Andrew Hillhouse, Vishal D. Naik, Jayanth Ramadoss, David W. Threadgill, JeHoon Lee, Josue Ramirez, and Kranti Konganti
- Subjects
Male ,medicine.medical_specialty ,hippocampus ,Offspring ,brain ,Hippocampal formation ,Biology ,050105 experimental psychology ,lcsh:RC321-571 ,Rats, Sprague-Dawley ,Pathogenesis ,Transcriptome ,03 medical and health sciences ,Behavioral Neuroscience ,0302 clinical medicine ,Pregnancy ,nitric oxide ,Internal medicine ,Gene expression ,medicine ,Animals ,Hippocampus (mythology) ,0501 psychology and cognitive sciences ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,Original Research ,teratology ,Fetus ,Ethanol ,05 social sciences ,High-Throughput Nucleotide Sequencing ,Teratology ,Rats ,3. Good health ,Disease Models, Animal ,Endocrinology ,Fetal Alcohol Spectrum Disorders ,Prenatal Exposure Delayed Effects ,Female ,030217 neurology & neurosurgery - Abstract
Introduction Prenatal alcohol exposure can contribute to fetal alcohol spectrum disorders (FASD), characterized by a myriad of developmental impairments affecting behavior and cognition. Studies show that many of these functional impairments are associated with the hippocampus, a structure exhibiting exquisite vulnerability to developmental alcohol exposure and critically implicated in learning and memory; however, mechanisms underlying alcohol‐induced hippocampal deficits remain poorly understood. By utilizing a high‐throughput RNA‐sequencing (RNA‐seq) approach to address the neurobiological and molecular basis of prenatal alcohol‐induced hippocampal functional deficits, we hypothesized that chronic binge prenatal alcohol exposure alters gene expression and global molecular pathways in the fetal hippocampus. Methods Timed‐pregnant Sprague–Dawley rats were randomly assigned to a pair‐fed control (PF) or binge alcohol (ALC) treatment group on gestational day (GD) 4. ALC dams acclimatized from GDs 5–10 with a daily treatment of 4.5 g/kg alcohol and subsequently received 6 g/kg on GDs 11–20. PF dams received a once daily maltose dextrin gavage on GDs 5–20, isocalorically matching ALC counterparts. On GD 21, bilateral hippocampi were dissected, flash frozen, and stored at −80°C. Total RNA was then isolated from homogenized tissues. Samples were normalized to ~4nM and pooled equally. Sequencing was performed by Illumina NextSeq 500 on a 75 cycle, single‐end sequencing run. Results RNA‐seq identified 13,388 genes, of these, 76 genes showed a significant difference (p
- Published
- 2019