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    The effect of short-term endurance training on 5-HT1A, 5-HT2A and 5-HT2C receptor mRNA levels in rat lumbar motoneurons

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    Date
    2010-09-12
    Author
    Woodrow, Lindsey
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    Abstract
    Serotonin receptor subtypes 5-HT1A, 5-HT2A and 5-HT2C are expressed in motoneurons and modulate motoneuron excitability. Serotonergic neurons, which increase their discharge with motor activity, make numerous contacts with motoneurons; however, little is known about the adaptability of motoneuron serotonin receptor expression in response to exercise. The purpose of this study was to determine the effect of a 7-day treadmill exercise protocol on 5-HT1A, 5-HT2A and 5-HT2C receptor mRNA levels in rat lumbar motoneurons. Lumbar motoneurons of exercised and sedentary animals were collected via laser capture microdissection. RNA was isolated from these samples and real-time reverse transcription polymerase chain reactions were performed to determine differences in receptor mRNA levels between exercised and sedentary animals. It appears that 5-HT1A, 5-HT2A and 5-HT2C receptor mRNA levels are unaltered following 7 days of treadmill exercise; however, future research must be done to determine if an exercise effect exists when motoneurons are differentiated by type.
    URI
    http://hdl.handle.net/1993/4178
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    • FGS - Electronic Theses and Practica [25494]

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