Results 221 to 230 of about 18,192 (271)

Megacystis Secondary to Myenteric Plexus Pathology

Urologia Internationalis, 2001
Herein, 2 cases of megacystis secondary to myenteric plexus pathology are reported. Unlike the entity of visceral myopathy, there was ganglion cell loss both in the bladder and in the colon of these 2 cases. Moreover, they did not present any gastrointestinal symptoms.
Hakkı Perk, T. Ahmet Serel, Kadri Anafarta, Alim Koşar, Ömer Uluoğlu, Aliye Sarı   +5 more
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Hyperplasia of the Myenteric Plexus

American Journal of Diseases of Children, 1982
• An infant with cutaneous criteria for neurofibromatosis had hyperplasia of the intestinal myenteric plexus and a clinical presentation mimicking Hirschsprung's disease. Many of his phenotypic features are also found in multiple endocrine neoplasia type IIb, a condition in which hyperplasia of the myenteric plexus is common.
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Myenteric plexus injury and apoptosis in experimental colitis

Autonomic Neuroscience, 2005
Intestinal inflammatory conditions are associated with structural and functional alterations of the enteric nervous system (ENS). While injury to the enteric nervous system is well described, the mechanisms of neuronal injury and neuronal cell loss remain unclear. The aim of the present study was to examine the neural consequences of distal colitis and
Lee, Boyer, Mehran, Ghoreishi, Valerie, Templeman, Bruce A, Vallance, Alison M, Buchan, Gareth, Jevon, Kevan, Jacobson   +6 more
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Immunocytochemical localization of GABA in cat myenteric plexus

Neuroscience Letters, 1987
Transverse sections through various levels of the feline gastrointestinal tract (antrum pyloricum, duodenum, jejunum, ileum and colon) were obtained from animals perfused with a mixture of glutaraldehyde and paraformaldehyde, and incubated with an antiserum specific for glutaraldehyde-fixed GABA.
S, Davanger, O P, Ottersen, J, Storm-Mathisen   +2 more
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Myenteric plexus destruction alters morphology of rat intestine

Gastroenterology, 1993
It has been shown previously that myenteric plexus destruction by benzalkonium chloride (BAC) increased villus height, crypt depth, and muscle thickness, suggesting that these neurons influence intestinal morphology. A nonspecific trophic effect of BAC, intraluminal stasis, and inflammation resulting from the chemical treatment could also be causes for
N, Hadzijahic, W E, Renehan, C K, Ma, X, Zhang, R, Fogel   +4 more
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Effects of morphine on myenteric plexus neurones

Neuropharmacology, 1976
Abstract Intracellular recordings were made from neurones in the isolated myenteric plexus of the guinea-pig ileum. Approximately 50% of neurones responded to bath application of normorphine (10 nM−1 μM) with an immediate hyperpolarization. The hyperpolarization was usually associated with a fall in membrane resistance. The effect reversed on washing
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Myenteric plexus neuropathy in infantile hypertrophic pyloric stenosis

Acta Neuropathologica, 1989
The myenteric plexus and intramuscular nerve bundles in the circular muscle layer of the pylorus from 37 children with infantile hypertrophic pyloric stenosis (IHPS) obtained at pyloromyotomy were studied by light and electron microscopy and compared to six control cases without clinical evidence of IHPS.
R, Dieler, J M, Schröder
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MYENTERIC PLEXUS IN CONGENITAL MEGACOLON

Archives of Internal Medicine, 1948
SINCE 1886, when Hirschsprung 1 published a report entitled ""Sluggishness of the Stool in the Newborn, Resulting from Dilatation and Hypertrophy of the Colon," there have been many reports in the medical literature describing various aspects of megacolon.
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Bombesin-mediated calcium fluxes in myenteric plexus neurons

Peptides, 1995
Dual excitation microfluorimetry (Fura-2) was used to measure changes in intracellular calcium ([Ca2+]i) in individual cultured guinea pig myenteric neurons. Bombesin (5-500 nM) induced concentration-dependent increases in [Ca2+]i responses, with a maximal effect at 500 nM (56% of neurons responding, mean peak Ca2+ response 244 +/- 25 nM vs. basal 65 +/
D M, Simeone, B C, Kimball, M W, Mulholland   +2 more
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Structural and Chemical Organization of the Myenteric Plexus

Annual Review of Physiology, 1988
The most striking characteristics of the myenteric plexus are the heterogeneity of its neuronal populations and the complexity of its organization. Myenteric neurons greatly differ in their morphological characteristics, projection patterns, and topographical arrangement within the ganglia.
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