P1272ECFECT OF MELATONIN ON DYSLIPIDEMIA IN HEMODIALYSIS PATIENTS
Abstract Background and Aims Cardiovascular disease is one of the major causes of death in hemodialysis patients. Lipid metabolism abnormalities and increased inflammatory factors are related factors. In recent studies melatonin inhibits dyslipidemia and reduces inflammatory factors by inhibiting LDL-c oxidation. The purpose of this study was to evaluate the effect of melatonin supplement on hyperlipidemia and c reactive protein (CRP ) level in hemodialysis patients. Method In this clinical trial ,the inclusion criteria were as follows:age older than 18 years, undergoing dialysis for at least 3 months,triglyceride >150mg/dL,HDL-c<40 mg/dL in males, HDL-c<50 mg/dL in females and serum CRP>5 mg/l Exclusion criteria were: Patients with a history of stroke, myocardial infarction, peripheral vascular disease, malignancy, heart failure, liver cirrhosis, active liver disease, history of infection, hospitalization one month ago, hepatitis B and C.HIV, and taking corticosteroid, statin, Non-steroidal anti-inflammatory drugs. Among 200 hemodialysis patients,only 28 patients fulfilled the inclusion criteria.. Patients were treated with Melatonin supplements 3 mg per day at bedtime during 12 weeks. Serum lipid profile and CRP level were measured after 12 weeks. Five patients were excluded, 2 patients underwent kidney transplantation, and three patients did not cooperate. Data were analyzed by SPSS 20 software. Normal distributed quantitative data were expressed as the mean ± SD and qualitative data was expressed as frequency and percentage. Wilcoxon matched pairs test was used to compare the two groups according to the type of study that had no normal distribution and the number of participants (less than 30) and study type (pre-test and post-test). P <0.05 was considered as the level of significance. Results A total of 23 patients completed the treatment protocol.Baseline demographic characteristics of patient are shown in Table 1.Parcipitant was composed of 13 male and 10female .The participants’ mean age was 30.6± 11.6.Etiology of ESRD was diabetes in 13(56/5%)and hypertension in5(21.7%)patients and other causes was 5(21/7%). After treatment mean total cholesterol levels decreased from 139.95 ± 35.49 mg/dL to 131.13 ± 34.96 mg/dL (p value =0.194 ) which was not statistically significant. But the decrease in serum triglyceride level was statistically significant ,from 242.08 ± 101.05 mg/dL decreased to 178.00 ± 48.02 mg/dL (pvalue = 0.004).HDL-c increased significantly after treatment from 36.20 ±7.08 mg/dL to 40.16 ±4.35mg/dL (pvalue =0.032). Serum CRP levels did not decreased.The limitations of our study were the small sample size and short duration of the investigation. Conclusion Melatonin supplement improves triglyceride and HDL-c in hemodialysis patients but has no effect on total cholesterol-c and CRP in hemodialysis patients.