Negative feedback control via prostaglandins in cholinergic transmission of canine small intestine

Cortical Control of Striatal Dopamine Transmission via Striatal Cholinergic Interneurons

Corticostriatal regulation of striatal dopamine (DA) transmission has long been postulated, but ionotropic glutamate receptors have not been localized directly to DA axons. Striatal cholinergic interneurons (ChIs) are emerging as major players in striatal function, and can govern DA transmission by activating nicotinic receptors (nAChRs) on DA axons. Cortical inputs to ChIs have historically be...

Control and regulation of pathways via negative feedback.

The biochemical networks found in living organisms include a huge variety of control mechanisms at multiple levels of organization. While the mechanistic and molecular details of many of these control mechanisms are understood, their exact role in driving cellular behaviour is not. For example, yeast glycolysis has been studied for almost 80 years but it is only recently that we have come to un...

Correction to 'Control and regulation of pathways via negative feedback'.

Histomorphometric changes of small intestine in pregnant rat

Food intake of rats increases during pregnancy. This requires changes in the structure of the small intestine to absorb additional food. The aim of the present study was to investigate the morphological changes in the layers of small intestine in rats during pregnancy. Duodenum, jejunum and ileum of 18 pregnant Sprague-Dawley rats (day 7, 14 and 21 of pregnancy) were collected. Villous height a...

A migrating electric complex of the canine small intestine

SZURSZEWSKI, JOSEPH I-I. A migrating electric complex of the canine small intestine. Am. J. Physiol. 2 17(6) : 1757-l 763. 1969.-The electric activity of the small bowel was studied in conscious, healthy dogs by the use of chronically implanted platinum electrodes. A caudad-moving band of large-amplitude action potentials (electric complex) starting in the duodenum and traversing the small bowe...