PMID- 19422394 OWN - NLM STAT- MEDLINE DCOM- 20100520 LR - 20240516 IS - 1476-5381 (Electronic) IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 158 IP - 1 DP - 2009 Sep TI - Role of alpha 1- and beta 3-adrenoceptors in the modulation by SR59230A of the effects of MDMA on body temperature in the mouse. PG - 259-66 LID - 10.1111/j.1476-5381.2009.00186.x [doi] AB - BACKGROUND AND PURPOSE: We have investigated the ability of the beta(3)-adrenoceptor antagonist 1-(2-ethylphenoxy)-3-[[(1S)-1,2,3,4,-tetrahydro-1-naphthalenyl]amino]-(2S)-2-propanol hydrochloride (SR59230A) to affect the hyperthermia produced by methylenedioxymethamphetamine (MDMA) in conscious mice and whether alpha(1)-adrenoceptor antagonist actions are involved. EXPERIMENTAL APPROACH: Mice were implanted with temperature probes under anaesthesia, and allowed 2 week recovery. MDMA (20 mg x kg(-1)) was administered subcutaneously 30 min after vehicle or test antagonist and effects on body temperature monitored by telemetry. KEY RESULTS: Following vehicle, MDMA produced a slowly developing hyperthermia, reaching a maximum increase of 1.8 degrees C at 130 min post injection. A low concentration of SR59230A (0.5 mg x kg(-1)) produced a small but significant attenuation of the slowly developing hyperthermia to MDMA. A high concentration of SR59230A (5 mg x kg(-1)) revealed a significant and marked early hypothermic reaction to MDMA, an effect that was mimicked by the alpha(1)-adrenoceptor antagonist prazosin. Functional and ligand binding studies revealed actions of SR59230A at alpha(1)-adrenoceptors. CONCLUSIONS AND IMPLICATIONS: 1-(2-ethylphenoxy)-3-[[(1S)-1,2,3,4,-tetrahydro-1-naphthalenyl]amino]-(2S)-2-propanol hydrochloride in high concentrations modulates the hyperthermic actions of MDMA in mice in two ways: by blocking an early alpha(1)-adrenoceptor-mediated component to reveal a hypothermia, and by a small attenuation of the later hyperthermic component which may possibly be beta(3)-adrenoceptor-mediated (this seen with the low concentration of SR59230A). Hence, the major actions of SR59230A in modulating the actions of MDMA on temperature involve alpha(1)-adrenoceptor antagonism. FAU - Bexis, Sotiria AU - Bexis S AD - Department of Physiology, Royal College of Surgeons in Ireland, Dublin, Ireland. FAU - Docherty, James R AU - Docherty JR LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090430 PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (3-(2-ethylphenoxy)-1-(1,2,3,4-tetrahydronaphth-1-ylamino)-2-propanol oxalate) RN - 0 (Adrenergic beta-3 Receptor Antagonists) RN - 0 (Propanolamines) RN - 0 (Receptors, Adrenergic, alpha-1) RN - 0 (Receptors, Adrenergic, beta-3) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - *Adrenergic beta-3 Receptor Antagonists MH - Animals MH - Body Temperature/drug effects/*physiology MH - Fever/chemically induced/prevention & control MH - In Vitro Techniques MH - Male MH - Mice MH - Mice, Inbred C57BL MH - N-Methyl-3,4-methylenedioxyamphetamine/antagonists & inhibitors/*toxicity MH - Propanolamines/*pharmacology/therapeutic use MH - Protein Binding/drug effects/physiology MH - Rats MH - Receptors, Adrenergic, alpha-1/*physiology MH - Receptors, Adrenergic, beta-3/*physiology PMC - PMC2795232 EDAT- 2009/05/09 09:00 MHDA- 2010/05/21 06:00 PMCR- 2010/09/01 CRDT- 2009/05/09 09:00 PHST- 2009/05/09 09:00 [entrez] PHST- 2009/05/09 09:00 [pubmed] PHST- 2010/05/21 06:00 [medline] PHST- 2010/09/01 00:00 [pmc-release] AID - BPH186 [pii] AID - 10.1111/j.1476-5381.2009.00186.x [doi] PST - ppublish SO - Br J Pharmacol. 2009 Sep;158(1):259-66. doi: 10.1111/j.1476-5381.2009.00186.x. Epub 2009 Apr 30.