Biomaterial Database

Distribution and morphological features of nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d) activity in intrinsic neurons of the Oddi sphincter of the cat. 1994

E Fehér, and C Montagnese

First Department of Anatomy, Semmelweis University Medical School, Budapest, Hungary.

To clarify the role of nitric oxide (NO) in the sphincter of Oddi, we histochemically investigated the distribution of nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d), a marker for NO synthase, in the cat. NADPH-diaphorase activity was localized in two neuronal subtypes: large neurons with many dendrites and smaller with one process. Most of the nerve cell bodies (99%) in the wall of the sphincter of Oddi showed strong activity for this enzyme. The nerve fibers with NADPH-d activity were observed in all layers, chiefly in the muscle layers. These results suggest that NO may play a very important role in the neuronal regulation of sphincter of Oddi.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009252	NADPH Dehydrogenase	A flavoprotein that reversibly oxidizes NADPH to NADP and a reduced acceptor. EC 1.6.99.1.	NADP Dehydrogenase,NADP Diaphorase,NADPH Diaphorase,Old Yellow Enzyme,TPN Diaphorase,Dehydrogenase, NADP,Dehydrogenase, NADPH,Diaphorase, NADP,Diaphorase, NADPH,Diaphorase, TPN,Enzyme, Old Yellow
D009474	Neurons	The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.	Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D009569	Nitric Oxide	A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.	Endogenous Nitrate Vasodilator,Mononitrogen Monoxide,Nitric Oxide, Endothelium-Derived,Nitrogen Monoxide,Endothelium-Derived Nitric Oxide,Monoxide, Mononitrogen,Monoxide, Nitrogen,Nitrate Vasodilator, Endogenous,Nitric Oxide, Endothelium Derived,Oxide, Nitric,Vasodilator, Endogenous Nitrate
D009803	Sphincter of Oddi	The sphincter of the hepatopancreatic ampulla within the duodenal papilla. The COMMON BILE DUCT and main pancreatic duct pass through this sphincter.	Oddi's Sphincter,Oddi Sphincter,Oddis Sphincter,Sphincter, Oddi's
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D005260	Female		Females
D006651	Histocytochemistry	Study of intracellular distribution of chemicals, reaction sites, enzymes, etc., by means of staining reactions, radioactive isotope uptake, selective metal distribution in electron microscopy, or other methods.	Cytochemistry
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001341	Autonomic Nervous System	The ENTERIC NERVOUS SYSTEM; PARASYMPATHETIC NERVOUS SYSTEM; and SYMPATHETIC NERVOUS SYSTEM taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the CENTRAL NERVOUS SYSTEM, especially the HYPOTHALAMUS and the SOLITARY NUCLEUS, which receive information relayed from VISCERAL AFFERENTS.	Vegetative Nervous System,Visceral Nervous System,Autonomic Nervous Systems,Nervous System, Autonomic,Nervous System, Vegetative,Nervous System, Visceral,Nervous Systems, Autonomic,Nervous Systems, Vegetative,Nervous Systems, Visceral,System, Autonomic Nervous,System, Vegetative Nervous,System, Visceral Nervous,Systems, Autonomic Nervous,Systems, Vegetative Nervous,Systems, Visceral Nervous,Vegetative Nervous Systems,Visceral Nervous Systems