Do Diuretics have Antinociceptive Actions: Studies of Spironolactone, Eplerenone, Furosemide and Chlorothiazide, Individually and with Oxycodone and Morphine
| Autor: | Jouko Laitila, Tuomas Lilius, Eija Kalso, Pekka Rauhala, Oleg Kambur, Viljami Jokinen, Mikko Niemi |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Pain Spironolactone Toxicology 030226 pharmacology & pharmacy Rats Sprague-Dawley 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Furosemide Internal medicine medicine Animals Drug Interactions Tissue Distribution Hot plate test Diuretics Pharmacology Neurons Analgesics Behavior Animal Morphine business.industry Brain General Medicine Chlorothiazide 3. Good health Eplerenone Analgesics Opioid Disease Models Animal Endocrinology chemistry Opioid Drug Therapy Combination business Oxycodone 030217 neurology & neurosurgery medicine.drug |
| Zdroj: | Basicclinical pharmacologytoxicology. 120(1) |
| ISSN: | 1742-7843 |
| Popis: | Spironolactone, eplerenone, chlorothiazide and furosemide are diuretics that have been suggested to have antinociceptive properties, for example via mineralocorticoid receptor antagonism. In co-administration, diuretics might enhance the antinociceptive effect of opioids via pharmacodynamic and pharmacokinetic mechanisms. Effects of spironolactone (100 mg/kg, i.p.), eplerenone (100 mg/kg, i.p.), chlorothiazide (50 mg/kg, i.p.) and furosemide (100 mg/kg, i.p.) were studied on acute oxycodone (0.75 mg/kg, s.c.)- and morphine (3 mg/kg, s.c.)-induced antinociception using tail-flick and hot plate tests in male Sprague Dawley rats. The diuretics were administered 30 min. before the opioids, and behavioural tests were performed 30 and 90 min. after the opioids. Concentrations of oxycodone, morphine and their major metabolites in plasma and brain were quantified by mass spectrometry. In the hot plate test at 30 and 90 min., spironolactone significantly enhanced the antinociceptive effect (% of maximum possible effect) of oxycodone from 10% to 78% and from 0% to 50%, respectively, and that of morphine from 12% to 73% and from 4% to 83%, respectively. The brain oxycodone and morphine concentrations were significantly increased at 30 min. (oxycodone, 46%) and at 90 min. (morphine, 190%). We did not detect any independent antinociceptive effects with the diuretics. Eplerenone and chlorothiazide did not enhance the antinociceptive effect of either opioid. The results suggest that spironolactone enhances the antinociceptive effect of both oxycodone and morphine by increasing their concentrations in the central nervous system. |
| Databáze: | OpenAIRE |
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