Saudi Journal of Gastroenterology
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Year : 2018  |  Volume : 24  |  Issue : 4  |  Page : 228-235

Evaluation of a modified rat model for functional dyspepsia

1 Department of Physiology, College of Basic Medicine, Lanzhou University, Lanzhou, China
2 Department of Gastroenterology, Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou, China
3 Department of Physiology, College of Basic Medicine, Lanzhou University; Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou, China

Correspondence Address:
Prof. Hongfang Li
Department of Physiology, College of Basic Medicine, Lanzhou University, 199 Donggang West Road, Lanzhou - 730 000
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/sjg.SJG_505_17

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Background/Aim: The purpose of this study was to establish a modified rat model with functional dyspepsia (FD) and analyze the changes in gastrointestinal motility and brain-gut peptide levels in serum and brain-gut axis. Materials and Methods: Male Wistar rats were divided into control group (Con) and FD model group. FD model was established by stimulating semi-starvation rats via tail damping, provocation, and forced exercise fatigue until gastrointestinal motility disorder appeared, and then levels of motilin, leptin, cholecystokinin (CCK), and vasoactive intestinal peptide (VIP) were detected in serum by enzyme linked immunosorbent assay and in duodenum, antrum, and hypothalamus by immunohistochemistry, reverse transcriptase-polymerase chain reaction, and Western blot. Results: The results showed rates of intestinal propulsion and gastric emptying slowed down markedly compared to Con (P < 0.05), the gastrointestinal electric activity attenuated, and migrating motor complex (MMC) interrupted in the model group. The levels of leptin and VIP markedly increased, but motilin decreased as compared to the Con (P < 0.05) in serum and in the above tissues. It is interesting that the level of CCK decreased in the antrum and duodenum but increased in the hypothalamus as compared to Con (P < 0.05). Conclusions: The modified rat model meets the diagnostic criteria of FD and can be used as a method for studying FD in animals.

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