Effects of duodenal-jejunal bypass on structure of diaphragm in western diet obese rats
Acta cir. bras
;
32(1): 1-13, Jan. 2017. graf
Artículo
en Inglés
| LILACS
| ID: biblio-837674
ABSTRACT
Abstract Purpose:
To evaluate the effects of duodenal-jejunal bypass (DJB) on the diaphragm muscle of obese rats fed on a western diet (WD) .Methods:
Eighteen male Wistar rats were fed a standard rodent chow diet (CTL group) or WD ad libitum. After 10 weeks, WD rats were submitted to sham (WD SHAM) or duodenal-jejunal bypass (WD DJB). The structure, ultrastructure, collagen content and the morphometry of the neuromuscular junctions (NMJs) were analyzed two months after surgery.Results:
WD SHAM rats displayed an increase in body weight, the Lee index and retroperitoneal and peri-epididymal fat pads compared to the CTL group. DJB did not alter these parameters. The muscle fiber structure and NMJs were similar in the WD SHAM and CTL groups. However, the WD SHAM group showed alterations in the fiber ultrastructure, such as loosely arranged myofibrils and Z line disorganization. In addition, WD SHAM animals presented a considerable amount of lipid droplets and a reduction in the percentage of collagen compared to the CTL group. DJB did not affect the structure or ultrastructure of the muscle fibers or the NMJs in the diaphragm of the WD DJB animals.Conclusion:
Duodenal-jejunal bypass did not improve the alterations observed in the diaphragm of western diet obese-rats.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Diafragma
/
Duodeno
/
Dieta Occidental
/
Yeyuno
/
Unión Neuromuscular
/
Obesidad
Límite:
Animales
Idioma:
Inglés
Revista:
Acta cir. bras
Asunto de la revista:
Cirugía General
/
Procedimentos Cir£rgicos Operat¢rios
Año:
2017
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Estadual do Oeste do Paraná/BR
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