The anti-inflammatory effects of venlafaxine in the rat model of carrageenan-induced paw edema

Hajhashemi, V. and Minaiyan, M. and Banafshe, H.R. and Mesdaghinia, A. and Abed, A. (2015) The anti-inflammatory effects of venlafaxine in the rat model of carrageenan-induced paw edema. Iranian Journal of Basic Medical Sciences, 18 (7). pp. 654-658.

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Objective(s): Recently anti-inflammatory effects of antidepressants have been demonstrated. Venlafaxine belongs to newer antidepressants with serotonin norepinephrine reuptake inhibition property. The pain alleviating properties of venlafaxine in different pain models such as neurogenic pain, diabetic neuropathy, and fibromyalgia have been demonstrated. Anti-inflammatory effects of venlafaxine and also its underlying mechanisms remain unclear. The present study was designed to evaluate the anti-inflammatory effects of venlafaxine and determine possible underlying mechanisms. Materials and Methods: We examined the anti-inflammatory effects of intraperitoneal (IP) and intracerebroventricular (ICV) administration of venlafaxine in the rat model of carrageenan-induced paw edema. Results: Our results showed that both IP (50 and 100 mg/kg) and ICV (50 and 100 μg/rat) injection of venlafaxine inhibited carrageenan-induced paw edema. Also IP and ICV administration of venlafaxine significantly decreased myeloperoxidase (MPO) activity and interleukin (IL)-1β and tumor necrosis factor (TNF)-α production. Finally, we tried to reverse the anti-inflammatory effect of venlafaxine by yohimbine (5 mg/kg, IP), an alpha2-adrenergic antagonist. Our results showed that applied antagonist failed to change the anti-inflammatory effect of venlafaxine. Conclusion: These results demonstrated that venlafaxine has potent anti-inflammatory effect which is related to the peripheral and central effects of this drug. Also we have shown that anti-inflammatory effect of venlafaxine is mediated mostly through the inhibition of IL-1β and TNF-α production and decreases MPO activity in the site of inflammation. © 2015, Mashhad University of Medical Sciences. All rights reserved.

Item Type: Article
Additional Information: cited By 2
Uncontrolled Keywords: carrageenan; interleukin 1beta; myeloperoxidase; tumor necrosis factor alpha; venlafaxine; yohimbine, animal experiment; animal model; animal tissue; antiinflammatory activity; Article; carrageenan-induced paw edema; controlled study; enzyme linked immunosorbent assay; male; nonhuman; rat; ultraviolet spectrophotometry, Rattus
Subjects: Pharmacology, Toxicology and Pharmaceutics
Divisions: Faculty of Medicine > Basic Sciences > Department of Pharmacology
Depositing User: editor . 2
Date Deposited: 07 Mar 2017 19:56
Last Modified: 07 Mar 2017 19:56

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