What question did this study set out to answer?

To characterize the pharmacological activity, potency, and receptor selectivity of medetomidine at alpha-adrenoreceptors compared with reference compounds.

December 1, 1986Journal of Autonomic Pharmacology

EVIDENCE FOR MEDETOMIDINE AS A SELECTIVE AND POTENT AGONIST α2‐ADRENORECEPTORS

View Full Paper

Ask AI

Bookmark

Authors

JSJuha‐Matti SavolaTeva Pharmaceuticals (Switzerland)HRHeikki RuskoahoHeart Failure & Transplant JPJuhani PuurunenUniversity of Oulu

Discussion

Member takes

Implication

Preclinical study reveals potent alpha-2 adrenoreceptor agonism and sedation by medetomidine in animal models, indicating high selectivity for autonomic nervous system modulation.

Key Points

To characterize the pharmacological activity, potency, and receptor selectivity of medetomidine at alpha-adrenoreceptors compared with reference compounds.
Tested in vivo cardiovascular actions in anaesthetized and pithed rats, evaluated sedative effects in chicks (30–300 µg/kg i.m.), and tested blockade by idazoxan and prazosin.
Assessed in vitro contractility in rat aortic rings and determined octanol/buffer lipophilicity (log P') at pH 7.4 via HPLC.
Medetomidine induced vasopressor (PD50 1.7 µg/kg) and sympatho-inhibitory (ID50 1.6 µg/kg) responses in pithed rats that were selectively reversed by idazoxan (0.3 mg/kg) but not prazosin (0.1 mg/kg).
Demonstrated greater central sedative and peripheral presynaptic alpha-2 potency than detomidine, clonidine, and xylazine, with no alpha-1 agonist activity in aortic rings (pA2 5.68 for antagonism) and a log P' of 2.80.

Cite This Study

Savola et al. (1986) studied this question.

synapsesocial.com/papers/6a915a6780800acc72340038 https://doi.org/10.1111/j.1474-8673.1986.tb00654.x

View Full Paper

Ask AI

Bookmark

Implication

Preclinical study reveals potent alpha-2 adrenoreceptor agonism and sedation by medetomidine in animal models, indicating high selectivity for autonomic nervous system modulation.

EVIDENCE FOR MEDETOMIDINE AS A SELECTIVE AND POTENT AGONIST α2‐ADRENORECEPTORS

Discussion

Member takes

Implication

Key Points

Cite This Study

EVIDENCE FOR MEDETOMIDINE AS A SELECTIVE AND POTENT AGONIST α2‐ADRENORECEPTORS

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider