Differential effects of acute and chronic exercise on plasticity-related genes in the rat hippocampus revealed by microarray. Molteni, R., Ying, Z., & Gómez-Pinilla, F. The European journal of neuroscience, 16(6):1107–16, September, 2002.
Differential effects of acute and chronic exercise on plasticity-related genes in the rat hippocampus revealed by microarray. [link]Paper  abstract   bibtex   
Studies were performed to determine the effects of acute and chronic voluntary periods of exercise on the expression of hippocampal genes. RNAs from rodents exposed to a running wheel for 3, 7 and 28 days were examined using a microarray with 1176 cDNAs expressed primarily in the brain. The expression of selected genes was quantified by Taqman RT-PCR or RNase protection assay. The largest up-regulation was observed in genes involved with synaptic trafficking (synapsin I, synaptotagmin and syntaxin); signal transduction pathways (Ca2+/calmodulin-dependent protein kinase II, CaM-KII; mitogen-activated/extracellular signal-regulated protein kinase, MAP-K/ERK I and II; protein kinase C, PKC-delta) or transcription regulators (cyclic AMP response element binding protein, CREB). Genes associated with the glutamatergic system were up-regulated (N-methyl-d-aspartate receptor, NMDAR-2A and NMDAR-2B and excitatory amino acid carrier 1, EAAC1), while genes related to the gamma-aminobutyric acid (GABA) system were down-regulated (GABAA receptor, glutamate decarboxylase GAD65). Brain-derived neurotrophic factor (BDNF) was the only trophic factor whose gene was consistently up-regulated at all timepoints. These results, together with the fact that most of the genes up-regulated have a recognized interaction with BDNF, suggest a central role for BDNF on the effects of exercise on brain plasticity. The temporal profile of gene expression seems to delineate a mechanism by which specific molecular pathways are activated after exercise performance. For example, the CaM-K signal system seems to be active during acute and chronic periods of exercise, while the MAP-K/ERK system seems more important during long-term exercise.
@article{molteni_differential_2002,
	title = {Differential effects of acute and chronic exercise on plasticity-related genes in the rat hippocampus revealed by microarray.},
	volume = {16},
	issn = {0953-816X},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/12383240},
	abstract = {Studies were performed to determine the effects of acute and chronic voluntary periods of exercise on the expression of hippocampal genes. RNAs from rodents exposed to a running wheel for 3, 7 and 28 days were examined using a microarray with 1176 cDNAs expressed primarily in the brain. The expression of selected genes was quantified by Taqman RT-PCR or RNase protection assay. The largest up-regulation was observed in genes involved with synaptic trafficking (synapsin I, synaptotagmin and syntaxin); signal transduction pathways (Ca2+/calmodulin-dependent protein kinase II, CaM-KII; mitogen-activated/extracellular signal-regulated protein kinase, MAP-K/ERK I and II; protein kinase C, PKC-delta) or transcription regulators (cyclic AMP response element binding protein, CREB). Genes associated with the glutamatergic system were up-regulated (N-methyl-d-aspartate receptor, NMDAR-2A and NMDAR-2B and excitatory amino acid carrier 1, EAAC1), while genes related to the gamma-aminobutyric acid (GABA) system were down-regulated (GABAA receptor, glutamate decarboxylase GAD65). Brain-derived neurotrophic factor (BDNF) was the only trophic factor whose gene was consistently up-regulated at all timepoints. These results, together with the fact that most of the genes up-regulated have a recognized interaction with BDNF, suggest a central role for BDNF on the effects of exercise on brain plasticity. The temporal profile of gene expression seems to delineate a mechanism by which specific molecular pathways are activated after exercise performance. For example, the CaM-K signal system seems to be active during acute and chronic periods of exercise, while the MAP-K/ERK system seems more important during long-term exercise.},
	number = {6},
	urldate = {2014-02-03},
	journal = {The European journal of neuroscience},
	author = {Molteni, Raffaella and Ying, Zhe and Gómez-Pinilla, Fernando},
	month = sep,
	year = {2002},
	pmid = {12383240},
	keywords = {Animals, Brain-Derived Neurotrophic Factor, Brain-Derived Neurotrophic Factor: biosynthesis, Brain-Derived Neurotrophic Factor: genetics, DNA, Complementary, DNA, Complementary: analysis, DNA, Complementary: genetics, Gene Expression Regulation, Gene Expression Regulation: genetics, Genes, Regulator, Genes, Regulator: genetics, Hippocampus, Hippocampus: metabolism, MAP Kinase Signaling System, MAP Kinase Signaling System: genetics, Male, Nerve Growth Factors, Nerve Growth Factors: biosynthesis, Nerve Growth Factors: genetics, Nerve Tissue Proteins, Nerve Tissue Proteins: biosynthesis, Nerve Tissue Proteins: genetics, Neuronal Plasticity, Neuronal Plasticity: genetics, Neurons, Neurons: metabolism, Oligonucleotide Array Sequence Analysis, Physical Conditioning, Animal, Protein Transport, Protein Transport: genetics, Rats, Rats, Sprague-Dawley, Reaction Time, Reaction Time: genetics, Synaptic Vesicles, Synaptic Vesicles: genetics, Synaptic Vesicles: metabolism, Up-Regulation, Up-Regulation: genetics},
	pages = {1107--16},
}

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