Objective PRDX-2 of the basic level in patients with PCOS,and its correlation with cardiovascular risk factors.Methods Collected 78 cases of PCOS patients for POCS group,at the same time,choose healthy check-up 40 cases for control group.Determination of plasma Peroxiredoxin-2,blood sugar,glycosylated hemoglobin,cholesterol,triglycerides,and other biochemical indicators.Results Peroxiredoxin-2 level in PCOS group are higher than the control group(F=26.03;P<0.05).Peroxiredoxin-2 and cardiovascular risk factors exist correlation,including systolic blood pressure (r=0.213),diastolic blood pressure (r=0.380),fasting blood glucose (r=0.308),glycosylated hemoglobin (r=0.303),cholesterol (r=0.190),triglyceride (r=0.276),LDL-C (r=0.484) were positively correlated,and CRP (r=0.227),HDL-C negative correlation (r=0.355).Conclusion Determination of Peroxiredoxin-2 level can be used as evaluation of patients with PCOS risk factors for cardiovascular disease.

Objective To explore the influence of aerobic exercise on plasma lipoprotein in overweight and obese PCOS women.Methods 12 obese and overweight patients with PCOS were selected.Before and after 12 weeks of aerobic exercise,the height,weight,BMI,WHR,body fat percentage and fasting blood samples of high-density lipoprotein(HDL),low density lipoprotein(VLDL),triglyceride and cholesterol levels were measured and detected.Results After 12 weeks of aerobic exercise,the BMI[(25.43±2.17)kg/cm2 vs.(22.27±1.57)kg/cm2,t=8.52],WHR[(0.864±0.021) vs.(0.831±0.019),t=2.99],fat rate[(33.76±5.36)% vs.(30.53±5.66)%,t=5.580],and triglyceride[(1.90±0.58)mmol/L vs.(0.95±0.51)mmol/L,t=7.400]were obviously decreased,the high-density lipoprotein cholesterol[(2.07±0.39)mmol/L vs.(3.31±0.48)mmol/L,t=3.352]was obviously increased,the differences were statistically significant (all P<0.05).Conclusion Obese and overweight PCOS women can lose weight through aerobic exercise,so as to adjust lipoprotein spectrum and improve health.

Objective To optimize the method for radiotherapy target delineation after breast cancer surgery, and to observe its advantage in raising work efficiency. Methods Ten physicians in our department were selected, and 20 patients who received breast?conserving surgery were randomly selected. The 10 physicians delineated the targets for these patients with the method in the control group and the method in the study group, and the time required for each delineation was recorded. The method in the control group was commonly used in daily practice and the method in the study group was optimized. The independent?samples t test was applied to compare the differences between the two groups. Results With the optimized method, the average time of delineation in the study group was less than that in the control group ( 51 min vs. 65 min, P=0. 029) . The time curves for delineation in the control group were relatively flat;the time curves for delineation in the study group were high at first, then decreased gradually, and finally became flat. The time for each physician to finish delineation skillfully was relatively stable, while in the study group, the time started to decrease after delineation for the first few patients, with an apparent learning process. Conclusions The optimized method for target delineation in breast cancer is feasible, reliable, and easy to master, and can increase work efficiency, which is more obvious in physicians with rich experience in delineation.

Objective:To explore the relationship between different gestational weeks of transvaginal ultrasound-guided fetal reduction and abortion in patients with multiple pregnancies after embryo transfer, and to seek the best gestational age for fetal reduction.Methods:The datas of 486 pregnant women with multiple pregnancies after embryo transfer in the Second Hospital of Hebei Medical University from January 2012 to December 2020 were retrospectively analyzed. The relationship between gestational weeks of fetal reduction and abortion rate was analyzed by curve fitting, threshold effect and multivariate logistic regression analysis.Results:After adjusting for age, infertility type, infertility years, number of births, abortion times, body mass index(BMI), various infertility and sterility factors, endometrial thickness on the day of transformation, monozygotic twins and reduction methods, when the gestational age was less than 8.43 weeks, the abortion rate increased significantly with the increase of reduction gestational age, and the abortion rate increased by 221% ( OR=3.21, 95% CI=1.47-6.99, P=0.003 3). When the gestational age of reduction ≥8.43 weeks, the abortion rate tended to be stable and did not increase ( OR=0.81, 95% CI=0.54-1.22, P=0.317 7); meanwhile, in stratified analysis, the OR value of the BMI ≥24 kg/m 2 was 12.38, and that of BMI <24kg/m 2 was 1.91, P=0.053 9. Conclusions:There is a non-linear relationship between gestational age and abortion rate of ultrasound-guided multiple pregnancy reduction in patients with embryo transfer. The abortion rate increases significantly with the increase of gestational age before 8.43 weeks of gestation. It is recommended to carry out the operation as early as possible before 8 weeks of pregnancy. The effect of BMI on the abortion rate of patients with fetal reduction needs further study.