Abstract:
:Few studies have associated the effects of changes in caloric intake and redox disturbances in the gastrointestinal tract. Therefore, the present study aimed at evaluating the hypercaloric diet consumption influence on the contractile reactivity of intestinal smooth muscle, morphology, and oxidative stress of rat ileum. Wistar rats were randomly divided into groups that received a standard diet and fed with a hypercaloric diet for 8 weeks. Animals were euthanized, and the ileum was isolated to isotonic contraction monitoring. Morphology was evaluated by histological staining and oxidative stress by quantification of malondialdehyde levels and total antioxidant activity. Cumulative concentration-response curves to KCl and carbachol were attenuated in rats fed with a hypercaloric diet compared to those that received a standard diet. In addition, an increase in caloric intake promotes a rise in the thickness of the longitudinal smooth muscle layer of rat ileum and tissue malondialdehyde levels, characterizing lipid peroxidation, as well as a decrease in the antioxidant activity. Thus, it was concluded that the consumption of a hypercaloric diet impairs rat intestinal contractility due to mechanisms involving modifications in the intestinal smooth muscle architecture triggered by redox disturbances.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
de Souza ILL,Ferreira EDS,Diniz AFA,Carvalho MTL,Queiroga FR,Toscano LT,Silva AS,da Silva PM,Cavalcante FA,da Silva BAdoi
10.1155/2018/6364821subject
Has Abstractpub_date
2018-10-25 00:00:00pages
6364821eissn
1942-0900issn
1942-0994journal_volume
2018pub_type
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