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  • Title: An evaluation of combined immunosuppression with MNA 715 and microemulsified cyclosporine on renal allograft rejection in mismatched mongrel dogs.
    Author: Kyles AE, Gregory CR, Griffey SM, Jackson J, Bernsteen L, Morris RE.
    Journal: Vet Surg; 2002; 31(4):358-66. PubMed ID: 12094350.
    Abstract:
    OBJECTIVE: To evaluate a combination of MNA 715 and microemulsifed cyclosporine for the prevention of renal allograft rejection in mismatched mongrel dogs. STUDY DESIGN: Randomized, experimental study. ANIMALS: Fourteen female mismatched mongrel dogs. METHODS: Heterotopic renal transplantation and bilateral nephrectomy were performed in each dog. Dogs were randomly assigned to receive either MNA 715 and cyclosporine (n = 8) or cyclosporine alone (n = 6). Dogs were killed at 100 days after transplantation or when plasma creatinine exceeded 7 mg/dL. RESULTS: In the cyclosporine and MNA 715 group: 4 dogs survived to 100 days with normal plasma creatinine concentrations; 2 dogs with intestinal intussusceptions were killed at 5 and 8 days, 1 dog with a wound infection and sepsis was killed at 14 days, and 1 dog with a serum creatinine concentration >7 mg/dL was killed at 51 days postoperatively. In the cyclosporine-alone group: 3 dogs with acute rejection were killed at 6 to 9 days and 3 dogs survived to 100 days. In dogs treated with cyclosporine and MNA 715, survival to histologically confirmed acute rejection was significantly longer (P =.044) and the degree of mononuclear cell infiltration was significantly reduced (P =.040), compared with dogs treated with cyclosporine alone. CONCLUSIONS: MNA 715 combined with cyclosporine prolonged allograft survival and reduced the severity of histologic rejection in a clinically relevant renal transplant model. CLINICAL RELEVANCE: An immunosuppressive regimen consisting of MNA715 and microemulsified cyclosporine may be effective in preventing allograft rejection in canine renal transplant patients.
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