5 documents found, page 1 of 1
The participation of the nitrergic pathway in increased rate of transitory rela...
Palheta, Michel Santos; Graça, José Ronaldo Vasconcelos da; Santos, Armênio Aguiar dos; Lopes, Liziane Hermógenes; Palheta Júnior, Raimundo CamposContext - The rectal distension in dogs increases the rate of transitory lower esophageal sphincter relaxation considered the main factor causing gastroesophageal reflux. Objective - The aim of this study was evaluate the participation of the nitrergic pathway in the increased transitory lower esophageal sphincter relaxation rate induced by rectal distension in anesthetized dogs. Methods - Male mongrel dogs (n ...
Atrial stretch delays gastric emptying of liquids in awake rats
Palheta Júnior, Raimundo Campos; Silva, Moisés Tolentino Bento da; Barbosa, H. L. G.; Pinheiro, Ana Débora Nunes; Cardoso, KKátia Virgínia VianaAims: We previously reported that mechanical atrial stretch (AS) by balloon distention increased gastric tonus in anesthetized rats. The present study evaluated the effect of AS on the gastric emptying of a liquid test meal in awake rats and its underlying neural mechanisms. Main methods: Anesthetizedmale rats received a balloon catheter into the right atrium and a gastrostomy cannula. The next day,mean arteria...
Aortocaval fistula delays gastric emptying of liquid test meal in awake rat
Silva, Moisés T. B.; Palheta Júnior, Raimundo Campos; Oliveira, Francisca G. V.; Lima, Juliana B. M. de; Antunes-Rodrigues, José; Oliveira, Ricardo B.Arteriovenous (AV) anastomoses disrupt cardiovascular and renal homeostasis, 25 eliciting hemodynamic adjustments, resetting the humoral pattern, and inducing cardiac 26 hypertrophy. Because acute circulatory imbalance alters gut motor behavior, we studied the 27 effects of AV fistula placement on the gastric emptying (GE) of a liquid meal in awake rats. After 28 laparotomy, we created an aortocaval fistula (AC...
Caracterização das vias neuro-humorais no retarde do esvaziamento gástrico de l...
Palheta Júnior, Raimundo CamposRight atrium mechanical stretch (AS) increases gastric motility in anesthetized rats. We aimed to study the effect of AS on gastric emptying (GE) in awake rats and the related neuro-humoral pathways ivolved. Male albino rats (N=361, 250-280g) had a silicone balloon inserted in the right atrium. After 24-h, the central venous pressure (CVP), heart rate (HR) and the mean arterial pressure (MAP) were monitored and...
A distensão mecânica atrial direita diminui a complacência gástrica em ratos no...
Palheta Júnior, Raimundo CamposPALHETA JÚNIOR, R. C. A distensão mecânica atrial direita diminui a complacência gástrica em ratos normovolêmicos anestesiados. 2006. 91 f. Dissertação (Mestrado em Farmacologia) - Universidade Federal do Ceará. Faculdade de Medicina, Fortaleza, 2006.; Graça et al. (2002) observou em ratos que a hipervolemia aumenta o tônus gástrico, enquanto a hipovolemia o diminuía. Resolvemos estudar o efeito do estiramento ...