Effects of mycophenolate mofetil vs cyclosporine administration on graft survival and function after islet allotransplantation in diabetic rats

World J Gastroenterol. 2005 May 14;11(18):2733-8. doi: 10.3748/wjg.v11.i18.2733.


Aim: To develop an experimental model of islet allotransplantation in diabetic rats and to determine the positive or adverse effects of MMF as a single agent.

Methods: Thirty-six male Wistar rats and 18 male Lewis rats were used as recipients and donors respectively. Diabetes was induced by the use of streptozotocin (60 mg/kg) intraperitoneally. Unpurified islets were isolated using the collagenase digestion technique and transplanted into the splenic parenchyma. The recipients were randomly assigned to one of the following three groups: group A (control group) had no immunosuppression; group B received cyclosporine (CsA) (5 mg/kg); group C received mycophenolate mofetil (MMF) (20 mg/kg). The animals were killed on the 12th d. Blood and grafted tissues were obtained for laboratory and histological assessment.

Results: Median allograft survival was significantly higher in the two therapy groups than that in the controls (10 and 12 d for CsA and MMF respectively vs 0 d for the control group, P<0.01). No difference in allograft survival between the CsA and MMF groups was found. However, MMF had less renal and hepatic toxicity and allowed weight gain.

Conclusion: Monotherapy with MMF for immunosuppression was safe in an experimental model of islet allotransplantation and was equally effective with cyclosporine, with less toxicity.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cyclosporine / pharmacology*
  • Diabetes Mellitus, Experimental / surgery*
  • Graft Survival / drug effects*
  • Immunosuppressive Agents / pharmacology*
  • Islets of Langerhans / physiopathology*
  • Islets of Langerhans Transplantation*
  • Male
  • Mycophenolic Acid / analogs & derivatives*
  • Mycophenolic Acid / pharmacology*
  • Rats
  • Rats, Wistar


  • Immunosuppressive Agents
  • Cyclosporine
  • Mycophenolic Acid