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http://dx.doi.org/10.4040/jkan.2009.39.5.632

Effect of Dehydroepiandrosterone on Affected and Unaffected Hindlimb Muscles in Rats with Neuropathic Pain Induced by Unilateral Peripheral Nerve Injury  

Choe, Myoung-Ae (College of Nursing.The Research Institute of Nursing Science, Seoul National University)
An, Gyeong-Ju (Department of Nursing, Cheongju University)
Publication Information
Journal of Korean Academy of Nursing / v.39, no.5, 2009 , pp. 632-640 More about this Journal
Abstract
Purpose: The purpose of this study was to examine the effect of DHEA (Dehydroepiandrosterone) on muscle weight and Type I and II fiber cross-sectional area of affected and unaffected hindlimb muscles in rats with neuropathic pain induced by unilateral peripheral nerve injury. Methods: Neuropathic pain was induced by ligation and cutting of the left L5 spinal nerve. Adult male Sprague-Dawley rats were randomly assigned to one of two groups: The DHEA group (n=10) had DHEA injections daily for 14 days, and the Vehicle group (n=10) had vehicle injections daily for 14 days. Withdrawal threshold, body weight, food intake and activity were measured every day. At 15 days all rats were anesthetized and soleus, plantaris and gastrocnemius muscles were dissected from the both hindlimbs. Body weight, food intake, activity, muscle weight and Type I, II fiber cross-sectional area of the dissected muscles were measured. Results: The DHEA group showed significant increases (p<.05), as compared to the vehicle group for muscle weight of the unaffected plantaris, and in Type II fiber cross-sectional area of the gastrocnemius muscle. The DHEA group demonstrated a higher pain threshold than the vehicle group whereas total diet intake and activity score were not significantly different between the two groups. Conclusion: DHEA administration for 14 days attenuates unaffected plantaris and gastrocnemius muscle atrophy.
Keywords
Pain; Dehydroepiandrosterone; Muscular atrophy; Muscle weight; Muscle fiber;
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Times Cited By Web Of Science : 2  (Related Records In Web of Science)
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