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Título: Hirschsprung's disease - immunohistochemical findings
Fecha de publicación: 1994
Editorial: Murcia : F. Hernández
ISSN: 0213-3911
Materias relacionadas: CDU::6 - Ciencias aplicadas::61 - Medicina
Palabras clave: Immunocytochemistry
Hirschsprung's disease
Resumen: Hirschsprung's disease (HSCR) is characterized by a non-propulsive distal intestinal segment (usually colon) leading to a functional obstruction. An absence of ganglia in the affected - - segment explains the synonymous term ccaganglionosis coli,,. The lack of peristalsis is partly due to a deficient intestinal smooth muscle relaxation based on an absence of non-adrenergic, non-cholinergic (NANC) inhibitory innervation. Morphological studies using conventional microscopy, imrnunohistochemistry and immunochemistry against general neuronal markers and neuropeptides have been used to characterize the disturbed NANC innervation in HSCR. An increased cholinergic and adrenergic innervation is registered in the aganglionic segment in spite of the lack of neuronal cell bodies: Neuropeptides like vasoactive intestinal peptide (VIP), pituitary adenylate cyclase-activating polypeptide (PACAP), gastrin-releasing peptide (GRP), calcitonin generelated peptide (CGRP), substance P (SP), enkephalins and galanin imrnunoreactive nerve fibres are all reduced in number i n the aganglionic segment. In contrast, neuropeptide Y (NPY)-containing nerve fibres are increased in number in the diseased segment, probably reflecting the adrenergic hyperinnervation. General neuronal markers including chromogranins have been used to map the ne~lron~l network in the HSCR intestine and also to investigate the endocrine cell system in the intestinal mucosa. Nitric oxide is a potent component of the NANC inhibitory innervation and its synthesizing enzyme, nitric oxide synthase (NOS). is shown to be almost absent in the neuronal system in aganglionic intestine.
Autor/es principal/es: Larsson, L.T.
Publicado en: Histology and histopathology
URI: http://hdl.handle.net/10201/18506
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 15
Derechos: info:eu-repo/semantics/openAccess
Aparece en las colecciones:Vol. 9, nº 3 (1994)

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