Individual differences in the sensitivity of cold allodynia to phentolamine in neuropathic rats.

Abstract:

:In neuropathic rats sensitive to phentolamine (alpha-adrenoreceptor antagonist, 2 mg/kg, i.p.), prazosin (alpha1-adrenoreceptor antagonist, 0.5 mg/kg, i.p.) significantly attenuated cold allodynia whereas yohimbine (alpha2-adrenoreceptor antagonist, 0.5 mg/kg, i.p.) had no significant effect. In neuropathic rats insensitive to phentolamine, yohimbine significantly exacerbated cold allodynia whereas prazosin had no significant effect. These results suggest that the individual differences in the sensitivity of cold allodynia to phentolamine may be due to the difference in the alpha-adrenoreceptor subtype predominantly involved in cold allodynia.

journal_name

Eur J Pharmacol

authors

Kim SK,Min BI,Kim JH,Hwang BG,Yoo GY,Park DS,Na HS

doi

10.1016/j.ejphar.2005.08.030

keywords:

subject

Has Abstract

pub_date

2005-10-31 00:00:00

pages

64-6

issue

1-3

eissn

0014-2999

issn

1879-0712

pii

S0014-2999(05)00857-5

journal_volume

523

pub_type

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