title: Intestinal motility in acute uremia and effects of erythropoietin.
abstract: OBJECTIVE
  To investigate intestinal motility changes due to uremia, and the effect of pretreatment with erythropoietin.
  
  
  METHODS
  This randomized control study was conducted in the Department of Physiology, Faculty of Medicine,  Ain Shams University, Cairo, Egypt from September 2010 to July 2011. Forty adult female Wistar albino rats were allocated into 3 groups: control group, gentamicin-treated group, receiving intraperitoneal gentamicin sulphate (100 mg/kg for 5 days), and erythropoietin-gentamicin-treated group, receiving subcutaneous erythropoietin (1000 IU/kg for 3 days) prior to gentamicin injection. Isolated segments of duodenum and descending colon was subjected to in vitro motility study. Plasma creatinine and urea were assayed.
  
  
  RESULTS
  Induction of acute renal failure by gentamicin treatment resulted in a significant decrease in frequency of contraction of the duodenum and descending colon, an increase in the average duration of contraction of the duodenum, and a significant decrease in the average force of contraction in the descending colon. Moreover, the average force of contraction in response to acetylcholine was significantly decreased in the duodenum. The erythropoietin-gentamicin-treated group revealed a significant decrease in plasma creatinine and urea, and a significant increase in the duodenal average force of contraction and motility index, and colonic frequency. The duodenal absolute and average forces of contraction after acetylcholine increased significantly.
  
  
  CONCLUSIONS
  Acute uremia impairs small and large intestinal motility, probably due to uremic toxins and autonomic dysfunction. Erythropoietin pretreatment protected against intestinal dysmotility through the improvement of renal function and its neurotropic action.
authors.affiliation: Department of Physiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
authors.forename: Einas M
authors.initials: EM
authors.lastname: Nagib
authors.forename: Mohamed H
authors.initials: MH
authors.lastname: El-Sayed
authors.forename: Mona A
authors.initials: MA
authors.lastname: Ahmed
authors.forename: Magda H
authors.initials: MH
authors.lastname: Youssef
mesh_terms: D000208:Acute Disease; D000818:Animals; D003106:Colon / Q000187:drug effects / Q000503:physiopathology; D003404:Creatinine / Q000097:blood; D004195:Disease Models, Animal; D004386:Duodenum / Q000187:drug effects / Q000503:physiopathology; D004921:Erythropoietin / Q000008:administration & dosage*; D005260:Female; D005769:Gastrointestinal Motility / Q000187:drug effects*; D005839:Gentamicins / Q000494:pharmacology; D011897:Random Allocation; D051381:Rats; D017208:Rats, Wistar; D012016:Reference Values; D012680:Sensitivity and Specificity; D014511:Uremia / Q000139:chemically induced / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D005839:Gentamicins; D004921:Erythropoietin; D003404:Creatinine