title: Systemic and ocular effects of alpha 2-adrenergic stimulating and beta 2-blocking agents.
abstract: The effects of alpha 2-adrenergic stimulating agents (clonidine and guanabenz) and beta-adrenolytic agents (atenolol and propranolol) on the systemic arterial pressure, heart-rate, blood glucose level and intraocular pressure, as well as on the concentrations of glucose, Na+, K+ and Ca++ in the lens and aqueous and vitreous humours, are evaluated in the rabbit. alpha 2-adrenergic stimulating agents cause a significant increase of the glucose concentration in the blood, lens, aqueous and vitreous humours; whereas the beta-adrenolytic agents cause insignificant effects. Neither of the two drugs alters the concentration of Na+, K+ and Ca++ in the lens and aqueous and vitreous humours.
mesh_terms: D000316:Adrenergic alpha-Agonists / Q000494:pharmacology*; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology*; D000818:Animals; D001082:Aqueous Humor / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects; D002412:Cations / Q000032:analysis; D005123:Eye / Q000187:drug effects*; D005947:Glucose / Q000032:analysis; D006339:Heart Rate / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects*; D007429:Intraocular Pressure / Q000187:drug effects; D008297:Male; D011817:Rabbits; D014822:Vitreous Body / Q000187:drug effects
chemical_list: D000316:Adrenergic alpha-Agonists; D000319:Adrenergic beta-Antagonists; D002412:Cations; D005947:Glucose