AIM: To evaluate the efficacy of simvastatin on exercise-induced myocardial ischemia in patients with stable exertional angina pectoris and hypercholesterolemia. METHODS: Ninety patients with stable exertional angina pectoris, positive rate of exercise test and hypercholesterolemia were randomly divided into two groups: the therapy group assigned to a 12-week treatment period either diet plus simvastatin (n=45); the control group with diet alone (n=45). All the patients underwent exercise testing before and after the treatment period. RESULTS: (1) Simvastatin-treated patients had a significant variation in total cholesterol, triglyccrides, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol after treatment (P

Objective Improving the existed HPLC methods in order to detect the levels of global DNA methylation rapidly, stably and conveniently. Methods The HP1100 high performance liquid chrom-atographic (HPLC) system was used in this study. The analytic column was Macherey-Nagel (MN) EC 250/4.6 Nucleosil 100-5SA (250mm x 4. 6mm, 5u,m) cation exchange chromatographic column. We used 60mM acetic acid + 15% acetonitrile as mobile phase (adjust to pH =4. 6 by NaOH). The flow rate was 1. 0 ml/min, detective UV wavelength was set to 276 nm and column temperature was set to 28℃. The injection volume was 50μl. The global DNA methylation was expressed as 5mdC/(dC +5mdC) x 100%. Results Under these conditions, we can isolate dC and 5mdC completely in ten minutes. The level of leukocyte global DNA methylation in healthy people is (4. 389 ±0. 0159) %. Conclusions This method can determine the levels of global DNA methylation rapidly, and it can be widely applied in some laboratories.

Objective To explore the association of-11377 site single nucleotide polymorphism in promoter region of adiponectin gene and carotid intima-media thickness(CIMT)in patients with type 2 diabetes mellitus.Methods The adiponectin gene-11377C→G polymorphism was identified by PCR-restriction fragment length polymorphism(RFLP)in 504 patients with type 2 diabetes mellitus(250 patients with increased CIMT and254 Datients with normal CIMT). Serum lipid and fasting plasma glucose were detected by full automatic biochemical analysor.fasting serum insulin(FINS) was measured by radioimmunoassay,and serum adiponectin level was assessed by ELISA.Results The frequencies of adiponectin gene-11377C→G genotype and allele were different between type 2 diabetic patients with normal and increased CIMT(P

A total of 123 type 2 diabetics was randomised into 3 groups to receive gliclazide-MR, gliclazide or glibenclamide treatments for 16 weeks.All the subjects took self-monitoring of blood glucose (SMBG) during the trial.The effect of therapy was similar in 3 groups.The subtraction value between maximum and minimum blood glucose, mean postprandial maximum blood glucose, postprandial 2 h blood glucose, postprandial 2 h serum insulin and hypoglycaemia events were lower in gliclazide-MR group than those in glibenclamide group (all P＜0.01).The data suggest that SMBG is an useful method to evaluate blood glucose excursion.

Objective To explore the effects of subclinical hyperthyroidism (SH) on heart and bone and the optionof treatment. Methods Forty-three patients with endogenous SH were divided into two groups by the TSH level: group A (21 cases,TSH 0.03-0.60 mIU/L) and group B (22 cases, TSH

Objective:To explore the relationship between metabolic acidosis and cardiac valve calcification in maintenance hemodialysis (MHD) patients in the Pearl River Delta Region.Methods:Patients on MHD greater than 3 months who were treated in 10 blood purification centers in the Pearl River Delta Region from July 1 to September 30, 2019 were selected for this multicenter cross-sectional study. Based on a Doppler ultrasound, MHD patients were further divided into non-valve calcification group and valve calcification group. The demographics data, frequency of dialysis, blood pressure, single pool Kt/V(spKt/V), dialysis medications and laboratory data were collected and compared. Spearman correlation analysis was used to analyze the correlation between serum carbon dioxide combining power (CO 2CP) and cardiac valve calcification. Multivariate logistic regression model was used to analyze the influencing factors of cardiac valve calcification. Results:A total of 664 MHD patients were included in this study, with age of (57.0±14.2) years old and dialysis age of 43.0 (22.3, 71.7) months, including 395 males (59.5%) and 269 females (40.5%). Among them, there were 119 patients (17.9%) with diabetes and 186 patients (28.0%) with dialysis 2 times per week. There were 329 patients (49.5%) in the valve calcification group, and 335 patients (50.5%) in the non-valve calcification group. Compared to those in non-valve calcification group, valve calcification group had longer duration of dialysis, higher proportion of patients with dialysis 2 times per week, higher levels of diastolic blood pressure, fasting blood glucose, intact parathyroid hormone and ferritin, higher proportion of patients with blood CO 2CP<19 mmol/L (median CO 2CP), higher proportion of patients on usage of calcium channel blocker, angiotensin converting enzyme inhibitor/angiotensin receptor blocker, α-receptor blocker, β-receptor blocker, calcitriol and lanthanum carbonate (all P<0.05), while the levels of spKt/V, hemoglobin, serum CO 2CP, corrected calcium, blood phosphorus, blood alkaline phosphatase, albumin, total cholesterol, triacylglycerol, low-density lipoprotein, high-density lipoprotein, transferrin saturation, and the proportion of patients on usage of sevelamer and cinacalcet were lower (all P<0.05). Spearman analysis showed significant negative correlation between serum CO 2CP and valve calcification ( rs=-0.697, P<0.001). Multivariate logistic regression analysis showed that dialysis performed twice a week ( OR=2.789, 95% CI 1.232-6.305, P=0.014), blood total cholesterol ( OR=1.449, 95% CI 1.014-2.071, P=0.042), CO 2CP<19 mmol/L ( OR=22.412, 95% CI 10.640-47.210, P<0.001) were the influencing factor of valve calcification in MHD patients. Conclusions:MHD patients with cardiac valve calcification have significant acid loading. Metabolic acidosis is an independent influencing factor for cardiac valve calcification in MHD patients.

The basic information and clinical application of nutritional risk scales for children with cancer were reviewed, and the strengths and weaknesses of each scale were analyzed. After systematic search and reading, the scales with more clinical applications included universal scales: Pediatric Malnutrition Assessment Screening Tool (STAMP), Nutritional Risk and Stunting Malnutrition Screening Tool (STRONG kids), Pediatric Yorkhill Malnutrition Score (PYMS), Pediatric Subjective Global Nutritional Risk Assessment (SGNA); specific scales: Nutritional Screening Tool for Childhood Cancer (SCAN), Nutritional Risk Screening for Childhood Cancer (NRS-PC). In order to effectively manage the nutritional risk of pediatric cancer patients, we should selectively use and further actively Chinese or develop specific nutritional risk measurement tools adapted to our national conditions.

Objective To evaluate the diagnosis and treatment of acute superior mesenteric venous thrombosis (ASMVT).Methods Clinical data of 36 ASMVT patients admitted to our department from Jan 2014 to Oct 2017 were retrospectively analyzed,the differences of the clinical data and prognosis of nonsurgical group and surgical group were studied.Results All patients received anticoagulation therapy immediately after diagnosis,and recanalization rate was 42％.Surgical group included 21 cases,of which 9 cases received emergency surgery,12 cases received delayed bowel resection.There was significant difference between non-surgical group and surgical group (P ＞ 0.05) in hemoglobin level at admission (124 ±29)g/L vs.(93 ± 13) g/L,t =3.880,P =0.006.Compared with delayed bowel resection group emergency surgery group had longer bowel resection (65 ± 58) cm vs.(13 ± 6) cm,t =2.700,P =0.035,more loop ileostomy (6 vs.1,x2 =7.875,P =0.016),more postoperative complication rate (56％ vs.8％,x2 =5.619,P =0.046),but there was no significant difference in hospitalization time,hospitalization cost,postoperative recurrence and mortality rate (P ＞ 0.05).Conclusions Early anticoagulantion therapy is advised for ASMVT patients to avoid bowel resection or reduce the length of intestinal resection.It is advisable for those who can be tided over to delayed bowel resection with intestinal obstruction.

Objective: To investigate the relationships among psychological resilience, parental control, and behavioral problems in middle school students, aiming to provide evidencebased recommendations for the prevention and intervention of behavioral issues in middle school students, as well as for the development of related policies. Methods: A stratified cluster sampling method was used to select 2 745 participants from three cities in Guizhou Province with different levels of economic development from August to December 2021. The Child Behavior Checklist (CBCL), Parental Control Questionnaire, and Psychological Resilience Questionnaire were administered to junior high school students and their parents. A network analysis method was employed to construct a network analysis model of factors influencing behavioral problems. Results: The detection rate of behavioral problems among junior high school students in Guizhou Province was 22.62%. The scores for psychological resilience (goal focus, emotional control, positive cognition, family support, and interpersonal assistance) and proactive inquiry in behavior control were higher in the group without behavioral problems than in the group with behavioral problems. Scores for psychological control (inducing guilt, with drawing affection, and asserting authority) were higher in the group with behavioral problems than in the group without behavioral problems, with statistically significant differences (t=9.80, 17.76, 6.21, 12.20, 13.18, 6.28, 11.58, 11.10, 10.74, P<0.05). The network model showed that among the same variable factors, the strongest connection weight was between inducing guilt and withdrawing affection, with a weight of 0.79. Between different variables, there were negative correlation between behavioral problems and psychological resilience (goal focus, emotional control, positive cognition, family support, interpersonal assistance) and behavior control (proactive inquiry, behavioral restraint) with correlation coefficients (r=-0.25, -0.42, -0.16, -0.31, -0.33, -0.17, -0.03, P<0.05), respectively. There were positive correlation between psychological control factors (inducing guilt, withdrawing affection, and asserting authority) and behavioral problems (r=0.29, 0.27, 0.27), and a negative correlation between these psychological control factors and psychological resilience factors (goal focus, emotional control, positive cognition, family support, interpersonal assistance)(r=-0.53--0.13)(P<0.05). The strongest connection weight was between withdrawing affection and family support, with a connection weight of -0.53. Family support was an important bridge symptom connecting the entire behavioral problem network model, with a high centrality. Conclusions The detection rate of behavioral problems among junior high school students in Guizhou Province is relatively high. Assisting adolescents in establishing a supportive family environment facilitates the cultivation of their psychological resilience, thereby mitigating the occurrence of behavioral problems.

Objective To compare the hemodynamic characteristics in internal carotid artery models, which were obtained by multi-scale unidirectional and bidirectional coupling models, so as to provide references for selecting models in further studies. Methods Based on the nuclear magnetic resonance image of one patient with mild stenosis of internal carotid artery, the lumped parameter model of the circle of Willis and the three-dimensional model of internal carotid artery were constructed. Those two different multi-scale models were constructed by unidirectional and bidirectional coupling. Results With the increase of stenosis degree, the inlet and outlet blood pressure and the outlet blood flow of internal carotid artery all decreased under two kinds of coupling method. The distribution of low time average wall shear stress (TAWSS) and high oscillatory shear index (OSI) of the internal carotid artery both increased with the increase of stenosis degree under two kinds of coupling method in general. The anterior cerebral artery segment showed lower shear stress and higher OSI with bidirectional coupling in 70% stenosis, and the blood flow direction of posterior communicating artery was changed, which was significantly different from unidirectional coupling results. Conclusions At a low degree of stenosis, the result of those two kinds of coupling method were consistent in general, but there was a significant difference in 70% stenosis, and the result of bidirectional coupling was closer to physiological parameters. The research findings can be better applied to the hemodynamic study of cerebrovascular diseases.