Changes of in vivo gastrointestinal motor pattern in pacemaker-deficient (WsRC-Ws/Ws) rats.
Dig Dis Sci
; 45(10): 1901-6, 2000 Oct.
Article
em En
| MEDLINE
| ID: mdl-11117558
ABSTRACT
In vitro studies on pacemaker-deficient W-mutants have revealed a disappearance of rhythmic contraction in their gastrointestinal tracts. Their contractile force has not been diminished, however. In contrast, W-mutants often present dysmoility-like symptoms with distension of the gastrointestinal tract in vivo. Gastrointestinal motility of W-mutant rats was examined in vivo by an extraluminal strain-gauge force transducer method. We examined a normal gastrointestinal motor pattern in the rats with two distinct motor phases, digestive and interdigestive. Moreover, we detected a failure to form an interdigestive contractile complex in pacemaker-deficient rats. The interdigestive motor activity of the gastrointestinal tract is important for cleaning gastrointestinal tract in preparation for the next meal. The impairment of the interdigestive contractile complex may be related to the dysmoility-like symptoms of W-mutant rats in vivo.
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Base de dados:
MEDLINE
Assunto principal:
Proteínas Proto-Oncogênicas c-kit
/
Motilidade Gastrointestinal
/
Mutação
/
Plexo Mientérico
Limite:
Animals
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article