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From B.Sc. to Ph.D., my shuffle off to Buffalo
1Department of Toxicology, Nucro-Technics, 2000 Ellesmere Road, Unit 16, Scarborough, Ontario, Canada M1H 2W4.
Biochemical Pharmacology
|June 30, 2015
Summary
Research on guinea-pig ileal muscle contraction revealed a fluid muscarinic receptor-effector coupling model, challenging the spare receptor concept. New methods quantified calcium channel antagonist binding sites, advancing drug mechanism studies.
Area of Science:
- Biochemical Pharmacology
- Muscle Physiology
- Neuropharmacology
Background:
- Investigated mechanisms of muscle contraction in guinea-pig ileal longitudinal muscle.
- Focused on muscarinic receptor activation and cation movement.
- Examined differences between muscarinic and non-muscarinic contraction pathways.
Observation:
- Studied agonist binding, cation flux (mono- and divalent), and depolarization-contraction coupling.
- Observed tachyphylaxis in response to repeated stimulation.
- Developed quantitative methods for dihydropyridine calcium channel antagonist binding sites.
Findings:
- Provided data supporting a fluid muscarinic receptor-effector coupling model, challenging the established spare receptor theory.
- Quantified binding sites for dihydropyridine calcium channel antagonists.
- Elucidated mechanisms of muscarinic and non-muscarinic mediated contractions.
Implications:
- Advanced understanding of receptor theory and drug action.
- Opened new avenues for studying clinically relevant calcium channel blockers.
- Provided insights into drug mechanisms both within and outside the central nervous system.
