Prednisone, prednisolone, and methylprednisolone are currently administered in association with cyclosporin A in the postoperative treatment of transplant patients. The aim of this work was to evaluate the effects of these corticosteroids on the expression of several forms of cytochromes P450 (P450), including P450 1A2, 2D6, 2E1, and 3A, and on cyclosporin A oxidase activity in human liver. For...

Cyclosporin A abrogates pleiotropic drug resistance in certain experimental tumors. Its impact on drug-sensitive tumors has not been investigated. Our studies show that in drug-sensitive Ehrlich ascites carcinoma and hepatoma 129 cyclosporin A enhances daunorubicin inhibition of DNA synthesis in vitro and prolongs survival of host mice in vivo. Of particular interest is that cyclosporin A conve...

BACKGROUND Switching to cyclosporine A may result in a reversion of tacrolimus-induced diabetes mellitus. However, mechanisms underlying such a reversion are still unknown. METHODS Obese Zucker rats were used as a model for tacrolimus-induced diabetes mellitus. A cohort of 44 obese Zucker rats received tacrolimus for 11 days (0.3mg/kg/day) until diabetes development; then: (a)22 rats were eut...

1. The influence of spiramycin coadministration on cyclosporin pharmacokinetics was studied in five renal transplant patients. The plasma concentrations of cyclosporin were measured both by non-specific radioimmunoassay (RIA) and high-performance liquid chromatography (h.p.l.c.). 2. The kinetics of cyclosporin were followed before treatment, and after 1 day and then 2 weeks of oral treatment wi...

A single masked trial of cyclosporin A 5 mg/kg/day versus monthly 1 g intravenous boluses of cyclophosphamide was conducted among 23 patients with Behçet's syndrome and active, potentially reversible uveitis. The trial was unmasked after a mean of 12 (SD 2) months for the cyclosporin A group (n = 12) and a mean of 10 (SD 3) months for the cyclophosphamide group (n = 11). During the initial 6 mo...

A 17 year old Asian patient with autoimmune chronic active hepatitis resistant to treatment with high dose corticosteroids and azathioprine was given cyclosporin at a dose of 5 mg/kg/day. Within two weeks of starting the cyclosporin treatment a favourable clinical and biochemical response was obtained and by one month serum aminotransferase activities were within normal limits. An attempted red...

Eight patients with steroid-sensitive nephrotic syndrome which frequently relapsed despite cyclophosphamide treatment were given cyclosporin A (7.5 mg/kg/day to 10 mg/kg/day) for 8 to 12 weeks. Six had minimal change glomerulonephritis and two had focal segmental glomerulonephritis. Cyclosporin A was given to 5 patients when their nephrotic syndrome was in relapse and to 3 patients when the nep...

background: cyclosporine a (csa) is a potent immunosuppressant drug with therapeutic and toxic actions. the use of csa is limited by its toxicity. several researchers had proposed that oxidative stress could play an important role in csa-induced toxicity. arbutin has recently been shown to possess antioxidative and free radical scavenging abilities.the present study was designed to investigate ...

Small bowel enteropathies that are associated with an autoimmune process are often resistant to treatment. Two children with autoimmune enteropathy were treated with cyclosporin A for eight months. Both improved, as assessed by growth, small intestinal mucosal morphology, and carbohydrate absorption. Cyclosporin A is useful in the treatment of autoimmune enteropathy. This report also suggests t...