Rattus norvegicus strain:Fischer 344 | breed:inbred
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA908279 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR25251000_1.fastq.gz | Fastqsanger.gz | |||
| SRR25251000_2.fastq.gz | Fastqsanger.gz | |||
| SRR25251100_1.fastq.gz | Fastqsanger.gz | |||
| SRR25251100_2.fastq.gz | Fastqsanger.gz | |||
| SRR25251200_1.fastq.gz | Fastqsanger.gz |
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Project description:MoTrPAC endurance exercise training study targets young adult (6-month-old) rats. Specifically, male and female Fischer 344 rats (n = 12) were subjected to progressive treadmill endurance exercise training for 1, 2, 4, or 8 weeks, with tissues collected 48 hours after the last exercise bout. Sex-matched sedentary, untrained rats were used as controls. This study contributes to MoTrPAC's broader mission, which is to identify molecular changes occurring due to exercise. The ultimate goal is to understand how physical activity can improve and sustain health across various ages and fitness levels. The program is supported by the NIH Common Fund. For additional information, visit the MoTrPAC Data Hub at https://motrpac-data.org/. This SuperSeries is composed of the SubSeries listed below.
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The dataset is a subset of an endurance exercise training study that targets young adult (6-month-old) rats. Specifically, male and female Fischer 344 rats (n = 12) were subjected to progressive treadmill endurance exercise training for 1, 2, 4, or 8 weeks, with tissues collected 48 hours after the last exercise bout. Sex-matched sedentary, untrained rats were used as controls.
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Project description:This study aimed to examine if early life exercise could normalize the reduced heart mass we have previously observed in the adult hearts from growth restricted rats. We investigated the molecular pathways using microarray analysis to explain how endurance exercise in early life might be regulating the sustained increase in heart mass we have observed in these rats in adulthood. At 5 weeks of age, male WKY rats were allocated to one of the following exercise treatments: remained sedentary with post mortem (PM) at 9 or 24 weeks, early exercise training (from 5-9 weeks of age) with PM at 9 or 24 weeks, or later exercise training (from 20-24 weeks of age) with PM at 24 weeks (n=8 males/group). Exercise training involved treadmill running 5 days/ week for 4 weeks. Running duration progressively increased from 20 up to 60 minutes per day, with the treadmill speed set at 15 m/min for the first week and 20 m/min thereafter. At 9 or 24 weeks of age rats were killed with an intraperitoneal injection of Ilium Xylazil-20 (30 mg/kg) and Ketamine (225 mg/kg). The rats in the 9 week old early exercise and 24 week old later exercise groups were killed 72 hours following the last bout of treadmill running. Total RNA was obtained from the whole-hearts for analysis
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Project description:The goal of the endurance exercise training study in young adult rats was to perform exercise training studies in young adult (6-month-old) F344 rats, and from these rats collect multiple tissues in order to provide high quality samples for detailed analysis by chemical analysis sites. Tissues were collected from 10-12 rats sedentary control rats concurrent with the collection of the 8-week training groups. The 8-week training group and controls were from the same cohort and same age at euthanasia. For the older age group, an additional set of controls (n=5-6) were collected with the 1-2 week training group. Rats were either sedentary or underwent an exercise training program. Rats were exercised on the rodent treadmill 5 days per week using a progressive training protocol designed to exercise the rats at approximately 70% of VO2max and training was performed no earlier than 10:00 am and no later than 5:00 pm over 5 consecutive days per week. Training was initiated with the treadmill set at 70% of VO2 max and 5 degrees grade for 20 minutes. The duration of exercise was increased by one minute each day until day 31 of training (start of week 7), when a duration of 50 min was reached. Speed and grade of each training session increased in larger increments due to treadmill parameters. The highest intensity and duration of training began on day 31. This intensity was maintained for the final 10 days of the protocol to ensure steady state had been achieved. If any rats were unable to perform at least 4 days of training per week they were removed from the study and euthanized. It is important to note that the starting treadmill speed varied depending on the sex and age of the rat. The initial and maximum speeds were based on VO2max measurements obtained during the pre-training testing of the compliant rats. Rats assigned to the control group followed a schedule similar to the training group. They were placed in one lane on the treadmill for 15 minutes/day, 5 days per week. The treadmill was set at 0 m/min at an incline that corresponded to the incline being used by the training group.
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