The 5‐HT1A receptor agonist, 8‐OH‐DPAT, Attenuates Long‐Lasting Pain in Imiquimod‐Induced Psoriasis in Mice.

xlomafota13 shared this article with you from Inoreader The 5‐HT1A receptor agonist, 8‐OH‐DPAT, Attenuates Long‐Lasting Pain in Imiquimod‐Induced Psoriasis in Mice. Via Experimental Dermatology ABSTRACT Psoriasis pain is a common symptom underestimated and rarely evaluated in psoriasis clinical trials. This work aimed to investigate if the development of secondary chronic allodynia and hyperalgesia in the imiquimod (IMQ)-induced psoriasis mice model could be modulated by anti-inflammatory agents and compound 48/80 (C48/80) and to determine whether the activation of 5-HT1A receptor modulates these nociceptive behaviors. C57BL/6 male mice were treated with 5% IMQ for 7 days. The paw withdrawal responses to von Frey filaments (10 and 250 mN) were used to assess the allodynia and hyperalgesia. Nociceptive behaviors were also evaluated using ketorolac 15 mg/kg s.c; adalimumab 10 mg/kg s.c., and C48/80 10 mg/kg i.p. Then, the serum serotonin and the impact of 8-OH-DPAT (1 mg/kg s.c), a 5-HT1A receptor agonist, on long-lasting pain were examined. Mice receiving IMQ showed enhanced nociception, which decreased with all tested compounds. The serum serotonin in the IM Q-group showed a significant decrease (947.042 ng/ml) regarding the control group (1143.68 ng/ml). The pre-treatment with 8-OH-DPAT alleviated pain-related behaviors. These results suggest that the long-lasting pain resulting from psoriasis inflammation is also associated with the serotonergic system. The 5-HT1A receptor should be further explored as a potential therapeutic target for psoriasis pain modulation. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.