Effects of pilocarpine on the morphology of the human outflow apparatus.
نویسندگان
چکیده
The morphology of the outflow apparatus in human eyes which had been treated topically with either 2 or 4% pilocarpine on 4 occasions at 6-hourly intervals before enucleation was compared with an untreated control series of eyes from patients in a similar age range. In the pilocarpine-treated group the scleral spur was pulled posteriorly and internally, so that the angle formed by the scleral spur and the scleral sulcus was significantly greater in the treated than the untreated series. The change in attitude of the scleral spur produced widening of the spaces between the corneoscleral trabeculae and distension of the endothelial meshwork. It was shown from counts of giant vacuoles in the endothelium of Schlemm's canal that the incidence of giant vacuoles in the pilocarpine-treated group was greater than twice that in the controls. It would appear that pilocarpine produces alterations in the configuration of the outflow apparatus which would promote the drainage of aqueous humour.
منابع مشابه
The effects of topical pilocarpine on the morphology of the outflow apparatus of the baboon (Papio cynocephalus).
The morphology of the outflow system of the baboon (Papio cynocephalus) was studied by light microscopy and transmission electron microscopy in tissue from eyes treated with topical pilocarpine. In one group of five animals the intraocular pressure (IOP) was maintained at 18 mm /g in both the experimental and the control eye of each baboon for the duration of the experiment. The endothelial mes...
متن کاملInvolvement of Dorsal Hippocampal Muscarinic Cholinergic Receptors of CA1 Area on Anxiety Induced by Iron Oxide Nanoparticles in Adult Male Rats
Introduction: Recent findings revealed the biological effects of iron oxide nanoparticles on the central nervous system. Moreover, the brain cholinergic system plays a role in the modulation of anxiety behaviors. Therefore, this study aimed to evaluate the role of dorsal hippocampal muscarinic cholinergic receptors of the CA1 area on anxiety induced by iron oxide nanoparticles in adult male rat...
متن کاملEffects of latanoprost and pilocarpine combination on the intraocular pressure and pupil size of normal rabbits
The aim of this study was to determine the combination effect of latanoprost and pilocarpine on theintraocular pressure and pupil size in normal rabbits. In this study, 18 rabbits were randomized to threegroups of 6 animals each. The right eyes of rabbits in group 1 were treated topically with latanoprost, ingroup 2 with pilocarpine and in group 3 with latanoprost and pilocarpine. The left eyes...
متن کاملEffects of concomitant administration of latanoprost and pilocarpine on the intraocular pressure of experimentally glaucomatous rabbits
The purpose of this study was to evaluate the effects of a combination of latanoprost and pilocarpine onthe intraocular pressure in experimentally glaucomatous rabbits. Ocular hypertension was induced in 11conscious rabbits by the oral administration of tap water (70 mL/kg) via an orogastric tube. The study wasconducted in three therapeutic groups to test the effects of latanoprost (group L), p...
متن کاملEffect of pilocarpine on the formalin-induced orofacial pain in rat
In this study, the effects of subcutaneous (SC) injection of pilocarpine (a cholinomimetic agent) and atropine (a muscarinic receptors antagonist) were investigated on a tonic model of orofacial pain in rats. The contribution of the endogenous analgesic opioid system was assessed using naloxone (an opioid receptors antagonist). Tonic orofacial pain was induced by SC injection of a diluted forma...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The British journal of ophthalmology
دوره 62 5 شماره
صفحات -
تاریخ انتشار 1978