The effects of aging on opioid modulation of feeding in rats

Blake A. Gosnell; Allen S. Levine; John E. Morley

doi:10.1016/0024-3205(83)90401-0

The effects of aging on opioid modulation of feeding in rats

Blake A. Gosnell, Allen S. Levine, John E. Morley

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Abstract

Feeding responses to naloxone and butorphanol tartrate were measured in Fisher-344 rats with ages of 2, 12, 22 and 28 months. The two younger groups were 10-100 times more sensitive than the older groups to the suppressive effects of naloxone on feeding. Additionally, the older rats were less responsive to the feeding enhancement following butorphanol injections. These results are consistent with reports of age-related changes in endogenous opioid systems.

Original language	English (US)
Pages (from-to)	2793-2799
Number of pages	7
Journal	Life Sciences
Volume	32
Issue number	24
DOIs	https://doi.org/10.1016/0024-3205(83)90401-0
State	Published - Jun 13 1983

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abstract = "Feeding responses to naloxone and butorphanol tartrate were measured in Fisher-344 rats with ages of 2, 12, 22 and 28 months. The two younger groups were 10-100 times more sensitive than the older groups to the suppressive effects of naloxone on feeding. Additionally, the older rats were less responsive to the feeding enhancement following butorphanol injections. These results are consistent with reports of age-related changes in endogenous opioid systems.",

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AU - Levine, Allen S.

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AB - Feeding responses to naloxone and butorphanol tartrate were measured in Fisher-344 rats with ages of 2, 12, 22 and 28 months. The two younger groups were 10-100 times more sensitive than the older groups to the suppressive effects of naloxone on feeding. Additionally, the older rats were less responsive to the feeding enhancement following butorphanol injections. These results are consistent with reports of age-related changes in endogenous opioid systems.

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The effects of aging on opioid modulation of feeding in rats

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