Adrenergic responses in isolated bovine retinal resistance arteries.
The reactivity of bovine retinal resistance arteries (i.d. ca. 200 microns) to selective alpha 1-, beta- and combined alpha- and beta-adrenoceptor stimulation was studied in vitro using phenylephrine, isoproterenol and norepinephrine, respectively. The results indicate that only functional alpha 1-adrenoceptors, possibly in low numbers, are present in these vessels.
Nielsen
P J
PJ
Department of Ophthalmology, University Eye Clinic, Rigshospitalet, Copenhagen, Denmark.
Nyborg
N C
NC
D000322:Adrenergic Agonists / Q000494:pharmacology*; D000818:Animals; D002196:Capillaries / Q000187:drug effects; D002417:Cattle; D005260:Female; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D009638:Norepinephrine / Q000494:pharmacology; D010656:Phenylephrine / Q000494:pharmacology; D012161:Retinal Artery / Q000187:drug effects*
D000322:Adrenergic Agonists; D010656:Phenylephrine; D007545:Isoproterenol; D009638:Norepinephrine