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Mazzola-Pomietto, P. et al.

Evidence that 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-induced hyperthermia in rats is mediated by stimulation of 5-HT2A receptors.

The effects of various 5-HT receptor subtype-selective antagonists were studied on phenylisopropylamine hallucinogen 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-induced hyperthermia in Wistar rats, in an attempt to characterize the 5-HT receptor subtype mediating DOI-induced hyperthermia. Intraperitoneal administration of DOI to rats produced hyperthermia with a peak effect at 60 min. Pretreatment with propranolol (beta-adrenoceptor antagonist that also has binding affinity for 5-HT1A, 5-HT1B and 5-HT2C sites), MDL-72222 or ondansetron (5-HT3 antagonists) did not attenuate DOI-induced hyperthermia. In contrast, pretreatment with metergoline (5-HT1/5-HT2 antagonist), ketanserin, LY53857, mesulergine, mianserin and ritanserin (5-HT2C/5-HT2A antagonists), as well as spiperone (5-HT1A/5-HT2A/D2 antagonist), significantly attenuated DOI-induced hyperthermia. Furthermore, daily administration of DOI (2.5 mg/kg per day) for 17 days did not produce either tolerance to its hyperthermic effect or modify m-CPP-induced hyperthermia in rats. These findings suggest that DOI-induced hyperthermia in rats is mediated by stimulation of 5-HT2A receptors.[1]

References

Evidence that 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-induced hyperthermia in rats is mediated by stimulation of 5-HT2A receptors. Mazzola-Pomietto, P., Aulakh, C.S., Wozniak, K.M., Hill, J.L., Murphy, D.L. Psychopharmacology (Berl.) (1995) [Pubmed]

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