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A substance P antagonist, (D-Pro2, D-Trp7,9)SP, inhibits inflammatory responses in the rabbit eye

Journal Article · · Science (Washington, D.C.); (United States)
Neurogenic factors released by antidromic nerve stimulation are thought to be in part responsible for the vasodilation and breakdown of the blood-aqueous barrier that follows trauma to the eye. Substance P is one candidate for the mediation of the inflammatory response since it is thought to be a neurotransmitter in sensory afferents and since exogenous substance P is capable of eliciting a response characteristic of inflammation. In rabbits, intravitreal or topical application onto the eye of a specific substance P antagonist, (d-Pro2, D-Trp7,9)SP, inhibited not only the irritant effects of exogenous substance P but also the inflammatory response to a standardized trauma (infrared irradiation of the iris). These observations suggest that substance P, or a related peptide, is a neurogenic mediator of the inflammatory response in the eye.
Research Organization:
Department of Experimental Ophthalmology I, University of Lund, Sweden
OSTI ID:
5501437
Journal Information:
Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 214:4524; ISSN SCIEA
Country of Publication:
United States
Language:
English