Sirolimus induced dyslipidemia in tacrolimus based vs. tacrolimus free immunosuppressive regimens in renal transplant recipients.
BACKGROUND
Sirolimus is a potent immunosuppressive drug that has been shown to decrease the incidence of rejection post renal transplantation. Dyslipidemia is a well recognized side effect of sirolimus therapy, which may have an impact on patient survival and post-transplant cardiac morbidity and mortality. It is unknown whether sirolimus-induced dyslipidemia is aggravated by concomitant use of tacrolimus which may also affect lipid profile. To compare sirolimus induced dyslipidemia in tacrolimus based vs. tacrolimus free regimens in renal transplant recipients.


METHODS
Patients who received sirolimus post kidney transplantation for at least nine sequential months were included in our retrospective study. Forty-eight renal transplant recipients were divided into 2 groups based on the immunosuppressive regimen; Group 1 received prednisone, sirolimus and mycophenolate mofetil, while Group 2 received prednisone, sirolimus, mycophanolate mofetil and tacrolimus. Lipid profile was assessed pre-transplantation and at one, three, six and nine months post sirolimus therapy.


RESULTS
Both groups showed significant but comparable elevation in total cholesterol, LDL-C and triglycerides with sirolimus therapy. The elevation was evident starting from the first month of sirolimus administration and remained to the ninth month at the end of the follow up period. At first month, mean triglycerides was 2.68 and 2.6 mmol/L (P>0.1) and mean total cholesterol was 6.3 and 5.7 mmol/L in group 1 and 2 (P>0.1); respectively. By the ninth month, triglycerides level was 2.6 and 3.9 mmol/L (P>0.1) while mean total cholesterol level was 6.2 and 6.1 mmol/L (P>0.1) in group 1 and 2 respectively. Lipid-lowering agents and total steroids dose were similar in both groups.


CONCLUSIONS
Hypercholesterolemia and hypertriglyceridemia secondary to sirolimus therapy is independent from concomitant tacrolimus use. Lipid-profile should be monitored in all renal transplant recipients receiving sirolimus as early as first month regardless of the immunosuppressive regimen used.
Pharmacy Services, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia. hakeam@kfshrc.edu.sa
Hakeam A
HA
Hakeam
Ahmed H
AH
Al-Jedai
Syed M
SM
Raza
Khaled
K
Hamawi
D000328:Adult; D015331:Cohort Studies; D004359:Drug Therapy, Combination; D050171:Dyslipidemias / Q000139:chemically induced*; D005260:Female; D006801:Humans; D007165:Immunosuppression Therapy; D007166:Immunosuppressive Agents / Q000008:administration & dosage* / Q000009:adverse effects*; D016030:Kidney Transplantation / Q000009:adverse effects; D008297:Male; D051437:Renal Insufficiency / Q000601:surgery; D012189:Retrospective Studies; D020123:Sirolimus / Q000008:administration & dosage / Q000009:adverse effects*; D016559:Tacrolimus / Q000008:administration & dosage* / Q000009:adverse effects
D007166:Immunosuppressive Agents; D020123:Sirolimus; D016559:Tacrolimus