Objective:To compare influence of Cushing's syndrome and essential hypertension (EH)on metabolic in-dexes.Methods:A total of 22 pathologically confirmed patients With Cushing's syndrome Were regarded as Cushing group and 22 EH patients,Who admitted in the same period With matched age,gender,nationality,body mass index (BMI)and mean blood pressure level for Cushing group,Were enrolled as EH group.Fasting blood glucose (FBG), 2h postprandial blood glucose (2hPBG),fasting insulin (FINS),2h postprandial insulin (2hINS),homeostasis mod-el-insulin resistance index (HOMA-IR),total cholesterol (TC),triglyceride (TG)and high density lipoprotein cho-lesterol (HDL-C)etc.Were compared betWeen tWo groups,and they Were statistically analyzed.Results:Com-pared With EH group,there Were significant increase in FBG [(4.75±0.44)mmol/L vs.(6.31±0.51)mmol/L], FINS [(13.04±2.68)mU/L vs.(29.05±2.92)mU/L],2hPBG [(7.32±0.82)mmol/L vs.(8.96±1.14)mmol/L],2hINS [(37.66±9.21)mU/L vs.(104.45±23.14)mU/L],HOMA-IR [(2.57±0.44)vs.(7.96±0.56)], TC [(4.15±0.93)mmol/L vs.(5.17±1.35)mmol/L]and TG [(1.44±0.87)mmol/L vs.(2.24±1.25)mmol/L]in Cushing group,P<0.05 or<0.01.Conclusion:Compared With essential hypertension,there are more meta-bolic changes and more obvious insulin resistance in Cushing's syndrome.

Objective To assess the effectiveness of the quotient of serum sodium to urinary sodium divided by (serum potassium) 2 to urinary potassium (SUSPPUP) in screening for primary aldosteronism (PA).Methods Among 952 patients with hypertension who had renin activity,aldosterone measurements and concomitant serum and urinary biochemistry data,204 patients were diagnosed as cases of PA and 261 as cases of essential hypertension.Diagnosis of PA was made in accordance with established laboratory criteria including renin activity and aldosterone,plasma aldosterone concentration/plasma renin activity (ARR),and saline loading test.The SUSPPUP ratio with the ARR were compared in two groups.Results The area under the curve of SUSPPUP and ARR was 0.797 and 0.796 respectively according to receiver operating characteristic curve,optimal cutoff of SUSPPUP was 1.0,the sensitivity and specificity of SUSPPUP was 98.9％ and 81％ respectively.Conclusions The SUSPPUP ratio is an inexpensive and rapid tool to assess the extent of mineralocorticoid excess,therefore,SUSPPUP ratio can be applied to screen PA in hypertensive patients.

e extra-adrenal pheochromocytoma.