Biomaterial Database

Denervation supersensitivity in Horner's Syndrome. 1975

A D Korczyn

The mechanism of denervation supersensitivity was investigated, using the pupillary system as an experimental model. A pharmacological study was carried out in six patients with Horner's syndrome due to postganglionic lesions. Administration of cocaine 4 percent resulted in dilatation of the normal pupil, while subsequent instillation of phenylephrine (2.5-5 percent) produced equal dilatation in both eyes. The results of the study indicate that denervation supersensitivity of the pupil can be explained solely by impaired reabsorption of catecholamines.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010656	Phenylephrine	An alpha-1 adrenergic agonist used as a mydriatic, nasal decongestant, and cardiotonic agent.	(R)-3-Hydroxy-alpha-((methylamino)methyl)benzenemethanol,Metaoxedrin,Metasympatol,Mezaton,Neo-Synephrine,Neosynephrine,Phenylephrine Hydrochloride,Phenylephrine Tannate,Neo Synephrine,Tannate, Phenylephrine
D011680	Pupil	The aperture in the iris through which light passes.	Pupils
D003042	Cocaine	An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It also has powerful central nervous system effects similar to the amphetamines and is a drug of abuse. Cocaine, like amphetamines, acts by multiple mechanisms on brain catecholaminergic neurons; the mechanism of its reinforcing effects is thought to involve inhibition of dopamine uptake.	Cocaine HCl,Cocaine Hydrochloride,HCl, Cocaine,Hydrochloride, Cocaine
D003714	Denervation	The resection or removal of the nerve to an organ or part.	Laser Neurectomy,Neurectomy,Peripheral Neurectomy,Radiofrequency Neurotomy,Denervations,Laser Neurectomies,Neurectomies,Neurectomies, Laser,Neurectomies, Peripheral,Neurectomy, Laser,Neurectomy, Peripheral,Neurotomies, Radiofrequency,Neurotomy, Radiofrequency,Peripheral Neurectomies,Radiofrequency Neurotomies
D004106	Dilatation	The act of dilating.	Dilation,Dilatations,Dilations
D005260	Female		Females
D006732	Horner Syndrome	A syndrome associated with defective sympathetic innervation to one side of the face, including the eye. Clinical features include MIOSIS; mild BLEPHAROPTOSIS; and hemifacial ANHIDROSIS (decreased sweating)(see HYPOHIDROSIS). Lesions of the BRAIN STEM; cervical SPINAL CORD; first thoracic nerve root; apex of the LUNG; CAROTID ARTERY; CAVERNOUS SINUS; and apex of the ORBIT may cause this condition. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp500-11)	Bernard Syndrome,Horner's Syndrome,Miosis, Innervational Defect,Oculosympathetic Syndrome,Bernard's Syndrome,Claude Bernard-Horner Syndrome,Horner Syndrome, Acquired,Horner Syndrome, Central,Horner's Syndrome, Pupil,Ophthalmoplegia, Sympathetic Ocular,Ptosis Sympathetic,Sympathetic Ocular-Ophthalmoplegia,Acquired Horner Syndrome,Bernard Syndromes,Bernards Syndrome,Central Horner Syndrome,Claude Bernard Horner Syndrome,Horner Syndrome, Pupil,Horners Syndrome,Horners Syndrome, Pupil,Ocular Ophthalmoplegia, Sympathetic,Ocular Ophthalmoplegias, Sympathetic,Ocular-Ophthalmoplegia, Sympathetic,Ocular-Ophthalmoplegias, Sympathetic,Oculosympathetic Syndromes,Ophthalmoplegias, Sympathetic Ocular,Pupil Horner's Syndrome,Sympathetic Ocular Ophthalmoplegia,Sympathetic Ocular Ophthalmoplegias,Sympathetic Ocular-Ophthalmoplegias,Syndrome, Acquired Horner,Syndrome, Bernard,Syndrome, Bernard's,Syndrome, Central Horner,Syndrome, Claude Bernard-Horner,Syndrome, Horner,Syndrome, Horner's,Syndrome, Oculosympathetic,Syndrome, Pupil Horner's,Syndromes, Bernard,Syndromes, Oculosympathetic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man