Cancer Terms

Timolol Maleate

Cancer Terms -> Drugs and Chemicals -> Pharmacologic Substance -> Agent Affecting Nervous System -> Adrenergic Agent -> Adrenergic Antagonist -> Beta-Adrenergic Blocking Agent -> Timolol Maleate

Timolol Maleate Definition

The maleate salt form of timolol, a propanolamine derivative and a non-selective beta-adrenergic antagonist with antihypertensive property. Timolol competitively binds to beta-1-adrenergic receptors in the heart and vascular smooth muscle and beta-2-receptors in the bronchial and vascular smooth muscle, resulting in a decrease in beta-adrenergic stimulation. Beta-1-receptor blockade results in a decrease in resting and exercise heart rate and cardiac output, a decrease in both systolic and diastolic blood pressure, and, possibly, a reduction in reflex orthostatic hypotension. Beta-2-blockade results in an increase in peripheral vascular resistance. The ultimate results include vasodilation, and negative chronotropic and inotropic effects. In addition, timolol reduces intra-ocular pressure possibly by decreasing aqueous humor production by reduction of blood flow to the ciliary processes and cAMP synthesis.

Timolol Maleate Synonyms

Timolol Maleate, TIMOLOL MALEATE, Timolol maleate

Terms in Timolol Maleate category



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