0000000000465026
AUTHOR
F. Biondi
Effects of Glyburide-Cyclosporin A Interaction on Interleukin-2 Production in Rats1
The effects of simultaneous administrations of Cyclosporin A (CsA) and Glyburide on the immune system of rats has been evaluated in terms of Interleukin-2 (IL-2) production by Concanavalin A (ConA) stimulated splenocytes and exogenous IL-2 binding capacity. The inhibitory effect of Cyclosporin A on IL-2 production of lymphoid cells is well known. Spleen cells from rats receiving CsA had reduced levels of IL-2 when compared to untreated controls or rats receiving Glyburide only. Splenocytes from rats receiving both drugs had reduced levels of IL-2 when they were sacrificed 24 hours after one or three CsA administrations; instead when the animals were sacrificed 6 days after three CsA adminis…
The effect of CYP3A5 and ABCB1 single nucleotide polymorphisms on tacrolimus dose requirements in Caucasian liver transplant patients
Background: Tacrolimus is a substrate of cytochrome P-450 (CYP) 3A enzyme and of the drug transporter ABCBl. We have investigated the effects of possible relevant CYP3A5 and ABCBl single nucleotide polymorphisms (SNPs) present in both donors and recipients on tacrolimus blood levels achieved in a population of 32 Caucasian liver transplant patients. Material/Methods: At 1, 3 and 6 months after transplantation, tacrolimus doses (mg/kg/day) and trough blood levels (C0) were determined. Polymerase chain reaction followed by restriction fragment length polymorphism analysis was used for gen-otyping CYP3A5*3 [6986A>G] as well as ABCBl at exons 21 [2677G>T] and 26 [3435C>T]. Results:87.5…
Cyclosporine A + Glybenclamide. Effect on Glucose Metabolism: Preliminary Results
Cyclosporine A (CsA) is an immunosuppressive drug which determines, at high dosage, glucose intolerance (1). Different drugs present a pharmacological interaction with CsA increasing or reducing its blood level (2). To investigate the role of Glybenclamide (HB419), a sulphonilureic oral antidiabetic drug of large use, on CsA glucose metabolic effect, we have administered CsA + HB419 in rats. The aim of our work is to evaluate if HB419 influences CsA blood levels and if it improves glucose tolerance.