BACKGROUND: Gastrointestinal (GI) dysfunction may lead to malnutrition in patients with chronic renal failure (CRF). This study investigated the effects of CRF on GI motility. METHODS: Forty-eight Sprague Dawley rats (180 ± 20 g) were randomly classified into CRF group and sham-operated (Sham) group, and each group was further assigned for gastric emptying (GE), small intestinal transit (SIT), interdigestive myoelectric complex (IMC), and fecal water content (FWC) experiments (6 CRF and 6 Sham rats per experiment). The CRF model was established by 5/6 nephrectomy. The body weight (BT), GE, SIT, IMC, and FWC of the rats were observed. ANOVA and Student-Newman-Keuls q-test were utilized to do statistical analysis. RESULTS: The BT of the rats in the two groups had no statistical difference before surgery. But in the ninth week after surgery, the CRF rats (230 ± 20 g) weighed less than the Sham rats (260 ± 15 g) (p < 0.05). The GE rate and SIT rate in CRF rats were significantly lower than that of Sham rats (GE 33.08 ± 7.50 vs. 53.37 ± 9.78%; SIT 42.92 ± 8.96 vs. 58.67 ± 9.12%) (p < 0.05). Compared with the IMC of the Sham rats, the CRF rats showed obvious alterations in (a) IMC cycle; (b) phase II and phase III duration; and (c) phase III cycling frequency, amplitude, and percentage (p < 0.05). FWC of the CRF rats increased significantly (p < 0.05). CONCLUSION: The GI motility of the CRF rats is obviously impaired. This finding may indicate that the effects of CRF on GI motility might be relatively prevalent.
BACKGROUND: Gastrointestinal (GI) dysfunction may lead to malnutrition in patients with chronic renal failure (CRF). This study investigated the effects of CRF on GI motility. METHODS: Forty-eight Sprague Dawley rats (180 ± 20 g) were randomly classified into CRF group and sham-operated (Sham) group, and each group was further assigned for gastric emptying (GE), small intestinal transit (SIT), interdigestive myoelectric complex (IMC), and fecal water content (FWC) experiments (6 CRF and 6 Sham rats per experiment). The CRF model was established by 5/6 nephrectomy. The body weight (BT), GE, SIT, IMC, and FWC of the rats were observed. ANOVA and Student-Newman-Keuls q-test were utilized to do statistical analysis. RESULTS: The BT of the rats in the two groups had no statistical difference before surgery. But in the ninth week after surgery, the CRF rats (230 ± 20 g) weighed less than the Sham rats (260 ± 15 g) (p < 0.05). The GE rate and SIT rate in CRF rats were significantly lower than that of Sham rats (GE 33.08 ± 7.50 vs. 53.37 ± 9.78%; SIT 42.92 ± 8.96 vs. 58.67 ± 9.12%) (p < 0.05). Compared with the IMC of the Sham rats, the CRF rats showed obvious alterations in (a) IMC cycle; (b) phase II and phase III duration; and (c) phase III cycling frequency, amplitude, and percentage (p < 0.05). FWC of the CRF rats increased significantly (p < 0.05). CONCLUSION: The GI motility of the CRF rats is obviously impaired. This finding may indicate that the effects of CRF on GI motility might be relatively prevalent.
Authors: José Ronaldo Vasconcelos da Graça; Cynara Carvalho Parente; Robério Ferreira Fiúza; Pedro Alberto Freitas da Silva; Bruno Teixeira Mota; Luiz Derwal Salles; Camila Meirelles de Souza Silva; Moisés Tolentino Bento da Silva; Ricardo Brandt de Oliveira; Armenio Aguiar Dos Santos Journal: Physiol Rep Date: 2015-02-12
Authors: Stacie Summers; Jessica M Quimby; Robert Kyle Phillips; Jonathan Stockman; Anitha Isaiah; Jonathan A Lidbury; Joerg M Steiner; Jan Suchodolski Journal: J Vet Intern Med Date: 2019-11-06 Impact factor: 3.333