Objective To detect the levels of serum uric acid(SUA),lipid and creatinine(SCr) of type 2 diabetes mellitus(T2DM),and discuss the correlation between them and diabetic nephropathy(DN).Methods One hundred and two cases of T2DM patients were selected and divided into three groups based on the level of urine microalbumin(mAlb)/creatinine(Cr):30 cases of N-UAlb group(urine mAlb/Cr＜30μg/mg),41 cases of M-UAlb group(30μg/mg≤urine mAlb/Cr＜300μg/mg)and 31 cases of C-UAlb group(urine mAlb/Cr≥300 μg/mg),detected the SUA,SCr,HbA1c,fasting insulin(FINS),triglyeride(TG)and calculated the creatinine clearance rate(CCr).Selected 40 healthy subjects as control group.Results The SUA level in C-UAlb group[(369.3±181.2)μmol/L]was significantly higher than the other groups [(248.6±109.4)μmol/L in control group;(228.7±104.8)μmol/L in N-UAlb group;(296.5±121.4)μmol/L in M-UAIb group](P＜0.01 or＜0.05),and increased with increment of urine mAlb/Cr.In the whole study population,the Pearson correlation coefficient of SCr,CCr,TG and SUA were 0.369,-0.389.0.525,respectively(P＜0.01).Multiple regression analysis showed that SUA levels in T2DM patients were positively correlated with TG(P＜0.05),and were negatively correlated with CCr(P＜0.05).Conclusions TG and CCr are independent risk factors of SUA.CCr correlates with SUA better than SCr.Diabetic hyperuricemia might affect the process of occurrence and development of DN.There is need for prevention and treatment.

Objective To investigate the expression of DNA methyltransferase 2 (DNMT2) and 3a (DNMT3a) in the epidermis of patients with psoriasis vulgaris.Methods Between March 2009 and December 2010,46 patients with psoriasis vulgaris were enrolled from the Department of Dermatology,Hospital for Skin Diseases,Chinese Academy of Medical Sciences and Peking Union Medical College,and the Department of Dermatology of Yixing People's Hospital,and 28 healthy controls were enrolled from the Department of Dermatologic Surgery,Hospital for Skin Diseases,Chinese Academy of Medical Sciences and Peking Union Medical College.Real-time quantitative PCR was performed to determine the mRNA expression of DNMT2 and DNMT3a in the epidermis of the lesional and nonlesional skin of patients with psoriasis vulgaris,as well as in the epidermis of normal skin of the healthy controls.Results The mRNA expression of DNMT2 (expressed as 2-△△Ct) in the lesional skin,non-lesional skin of the patients and normal skin of the healthy controls was 0.62 ± 0.02,0.36-± 0.05 and 0.15 ± 0.11,respectively.The mRNA expression of DNMT2 was significantly higher in the lesional skin than in the non-lesional skin of the patients (t =6.23,P ＜ 0.01),and higher in the non-lesional skin of the patients than in the normal skin of the healthy controls (t =7.33,P ＜ 0.01).Additionally,the mRNA expression of DNMT3a was significantly higher in the lesional skin (0.85 ± 0.03) than in the non-lesional skin (0.43 ± 0.04) of the patients (t =5.66,P ＜ 0.01),and higher in the non-lesiona] skin of the patients than in the normal skin of healthy controls (0.18 ± 0.09,t =8.62,P ＜ 0.01).Conclusion Both DNMT2 and DNMT3a mRNA were abnormally expressed in the epidermis of patients with psoriasis vulgaris.