Pharmacology

Introduction/Overview Neostigmine represents a cornerstone agent in the pharmacotherapy of conditions characterized by impaired neuromuscular transmission and postoperative recovery. As a synthetic quaternary ammonium compound, it functions primarily as a reversible inhibitor of acetylcholinesterase, the enzyme responsible for terminating the action of the neurotransmitter acetylcholine at cholinergic synapses. The clinical utility of neostigmine spans several … Read more

Introduction/Overview Pilocarpine is a naturally occurring alkaloid and a prototypical parasympathomimetic agent, primarily known for its direct agonist activity at muscarinic cholinergic receptors. Historically derived from the leaves of South American shrubs of the genus Pilocarpus, its therapeutic application spans over a century, marking it as one of the oldest medications still in contemporary clinical … Read more

1. Introduction/Overview Acetylcholine (ACh) represents the prototypical neurotransmitter of the cholinergic system, a fundamental signaling pathway in both the central and peripheral nervous systems. Its discovery by Otto Loewi in 1921, who termed it “Vagusstoff,” marked a seminal moment in neuropharmacology, establishing the chemical basis of synaptic transmission. The pharmacology of acetylcholine extends beyond the … Read more

1. Introduction/Overview Dopamine, a member of the catecholamine family, functions as a critical neurotransmitter in the central nervous system and as a systemic hormone. Its pharmacology is complex and multifaceted, underpinning a wide array of physiological processes and therapeutic interventions. As a precursor to norepinephrine and epinephrine, dopamine occupies a unique position in both neurological … Read more

1. Introduction/Overview Noradrenaline, also known internationally as norepinephrine, is a fundamental endogenous catecholamine that functions as both a central neurotransmitter and a peripheral hormone. As a key effector of the sympathetic nervous system, it mediates the “fight-or-flight” response, exerting profound effects on cardiovascular function, metabolism, and organ perfusion. In clinical practice, synthetic noradrenaline is a … Read more

1. Introduction/Overview Adrenaline, also known internationally as epinephrine, is a prototypical catecholamine that functions as both a crucial endogenous hormone and a vital therapeutic agent. As a neurotransmitter of the sympathetic nervous system and a hormone secreted by the adrenal medulla, it orchestrates the physiological “fight-or-flight” response. Its pharmacological significance stems from its potent, rapid, … Read more

1. Introduction/Overview Aspirin, or acetylsalicylic acid (ASA), represents one of the most historically significant and widely utilized pharmaceutical agents in clinical medicine. Its development from the natural salicylates found in willow bark to a synthetically produced molecule exemplifies the evolution of pharmacotherapy. The drug’s unique pharmacological profile, characterized by dose-dependent therapeutic effects, underpins its diverse … Read more