Rattus norvegicus
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ABSTRACT:
PROVIDER: PRJNA92585 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We studied the global genomic response in the hypothalamus during heat acclimation, with and without combined hypohydration stress. Rats were acclimated for 2 days or for 30 days at 34°C. Hypohydration (10% decrease in body weight) was attained by water deprivation. Functional analyses demonstrated a bi-phasic acclimatory profile with a transient upregulation of genes encoding ion channels, transporters, and transmitter signaling upon 2 days acclimation, suggesting enhanced neuronal excitability at that acclimation phase. Following long acclimation most genes returned to their pre-acclimation expression levels. In both acclimation phases, genes encoding hormones and neuropeptides, linked with metabolic rate and food intake, were downregulated. The response to hypohydration was characterized by an upregulation of a large number of genes primarily associated with the regulation of ion channels and cell-volume and neuronal excitability. During 2 days acclimation, the response was transiently desensitized, recovering upon LTHA. The results suggest that hypohydration overrides the heat acclimatory status. Keywords: other
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Project description:Cardiac and Soleus muscles following exposure of rats to heat acclimation and exercise training
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Project description:Gene expression profiling in the heart following exposure of rats to heat acclimation, its loss and re-induction.
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Project description:This experiment intended to look for the transcriptome changes that happen in neuronal cells from the preoptic area of the hypothalamus expressing leptin receptors during heat acclimation conditions. 3 groups of animals were used; long-term heat-acclimated animals constantly exposed to 36˚C for 28-35 days, short-term heat-acclimated animals constantly exposed to 36˚C for 5 days, and non-habituated (non-acclimated) animals which were not exposed to heat. The animal line used was LepRCreHTB.
2024-05-06 | E-MTAB-14029 | biostudies-arrayexpress
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Project description:The processes of adaptation to environmental heat and aerobic exercise training improve efficiency in various body systems and bring about acclimatory homeostasis. In order to examine the global genomic responses of the soleus and heart following exposure of rats to these stressors, nylon cDNA Atlas Array was used. Male rats were exposed to one of the following stressors: heat acclimation, aerobic training (treadmill), and combined heat acclimation and aerobic training for short (2, 3 days) and long (1 mo) time period. The study comprised seven experimental groups: Controls-untreated. Heat acclimated groups (2dac, Acc)â exposure to environmental heat at 34C for 2 or 30 days. Exercise groups (3dex, Ex)â graduated training protocol under normothermic conditions for 3 and 30 days at 24C. Exercise training and heat acclimation â (3dexac, ExAc)- exposed to both environmental heat and aerobic exercise as above. The Series data tables appended below: 1) Heart - normalized log2 ratio of geomeans defined as treatment/control 2) Soleus - normalized log2 ratio of geomeans defined as treatment/control 21 samples, 3 pool each, of: 1)Â Control untreated rats 2)Â Long-term heat acclimated rats 3)Â Long-term aerobic-exercised trained rats. 4)Â Rats exposed to long-term heat acclimation and exercise training. 5)Â Short term heat acclimated rats. 6)Â Short term aerobic exercised trained rats 7)Â Rats exposed to short-term heat acclimation and exercise training.
2010-05-27 | E-GEOD-7799 | biostudies-arrayexpress