The metabolic syndrome (MetS) is a general name for a group of metabolic risk factors for cardiovascular diseases,and its major constituents include hyperglycemia,hypertension,lipid abnormality and central obesity.Because MetS portly overlaps the risk factors of stroke,and thus it determines that MetS is closely related with stroke.No matter the interaction of all individual risk factor or multiple risk factors may affect the occurrence and development of stroke.

Smoking is one of the major risk factors for stroke. Both active and passive smoking may increase the risks of stroke, and the risks of stroke may decrease after smoking cessation, even no significant difference with non-smokers. Because of the different age, sex, smoking quantity, years of smoking, and regions of the smoking popuation, their strokes and the risks of all stroke subtypes are also different.

The correlation between lipids and stroke is complex. The levels of serum total cholesterol can increase the risk of stroke no matter it is too high or too low. Low-density lipoprotein is the risk factor of atherosclerotic stroke, while high-density lipoprotein is its protective factor. Triglyceride is closely associated with ischemic stroke. This article reviews the relationship between lipids and stroke, as well as the role of lipid-modulating therapy in the prevention and treatment of stroke.

Objective To explore the differential diagnosis among lacunas, demyelination and perivessel space in the aging brain. Methods T1 and T2 weighted image for 100 aging brains were analyzed retrospectively. All examinations were performed using GE 1.5 T scanner. Results In 100 subjects, 61 had multiloci of infarction and constituted a total of 110 loci. They located at pontine(17), cerebellum(14), lentiform nucleus(24), internal capsal(10), thalamus(12), periventricular and head of caudate nucleus (26), semioval centrum (7). They were round, elliptic, triangle, curve and irregular in shape, respectively. Ninety-five patients had 125 countable perivessel spaces. They located at ganglia (84) and semioval centrum (41). Demyelination was seen in 71 subjects and involved pontine and semioval centrum. Conclusions Most of lacuna, demyelination and perivessel space is distinguishable based on their signal, shape and location.

Objective To look into the effects of community intervention measures on blood pressure and hypertension control of the population.Methods Two geographic separated urban communities with the population about 50 000 each were selected as either intervention or control communities in Beijing in 1996.In the intervention community,the primary and secondary prevention on high blood pressure were carried out.And the morbidity and mortality of stroke in both intervention and control populations were monitored.A baseline survey and evaluation re-survey were respectively conducted in 1997 and 2000 covering both intervention and control communities with a cluster random sample of about 800 persons each.Results In the baseline survey,there were no difference between intervention and control communities in six of seven variables including systolic blood pressure(SBP),diastolic blood pressure(DBP),prevalence of hypertension,rate of awareness,therapy,control with SBP 140 and DBP

Aim To investigate the expressions of Fas/FasL and apoptosis of pulmonary tissue as well as oxygen free radical in the pulmonary fibrosis induced by bleomycin in rats at inflammation stage and fibrosis stage.Methods Forty-eight rats were divided into three groups randomly,including control group,model group and breviscapine group.On experimental day 0,the rats were intratracheally instilled with bleomycin,and then treated with breviscapine 10 mg?kg-1?d-1 until they were killed.On days 7,28 after stillation,eight rats of each group were killed and the lungs were harvested for examination.Flow cytomagnetometry was used to detect the changes of cell apoptosis and the expressions of Fas/Fasl in rats with pulmonary fibrosis caused by bleomycin at flammation stage and fibrosis stage.Malonaldehyde and hydroxyproline(HYP)of lung tissue were detected by TAB method.Results The apoptosis index of lung cells in the pulmonary fibrosis group was higher than that of control and breviscapine group.The expression of Fas/FasL and contents of Malonaldehyde as well as hydroxyproline in the pulmonary fibrosis group were higher than those of control group and breviscapine group(P

Objective To analyze the clinicopathological factors on the prognosis and investigate the necessity of adjuvant chemotherapy for patients with stage Ⅱ colorectal cancer.Methods The clinical data of 255 patients with stage Ⅱ colorectal cancer who were admitted to the First Affiliated Hospital of Sun Yat-Sen University from January 2000 to December 2005 were collected.The survival curve was drawn by Kaplan-Meier method,and the survival rate of the patients were analyzed by Log-rank test.Factors influencing the survival were analyzed by Cox regression model.Results All patients were followed up till April 23,2010,and the mean time of follow-up was (63 ± 22)months.The median survival time was 63 months.The 5-year and tumor-free survival rates were 85.3％ and 83.7％,respectively.The 5-year overall and tumor-free survival rates of patients without preoperative bowel obstruction or perforation were 86.9％ and 85.6％,which were sigaificantly higher than 72.7％and 68.4％ of patients with preoperative bowel obstruction or perforation(x2 =4.546,4.573,P ＜ 0.05 ).The 5-year overall and tumor-free survival rates of patients with negative resection margin were 85.5％ and 83.9％,which were significantly higher than 75.0％ and 75.0％ of patients with positive resection margin(x2 =7.020,6.009,P ＜ 0.05 ).The result of multivariate analysis revealed that preoperative bowel obstruction or perforation were the independent risk factors for patients with stage Ⅱ colorectal cancer(Wald =4.477,relative risk =2.371,95 ％ confidence interval:1.066-5.275,P ＜ 0.05 ).The 5-year overall and tumor-free survival rates were 87.3％ and 86.0％ for patients who received adjuvant chemotherapy,and were 82.2％ and 80.3％ for patients who did not receive adjuvant chemotherapy (P ＞ 0.05 ).Conclusions Preoperative bowel obstruction or perforation are independent risk factors for the survival of patients with stage Ⅱ colorectal cancer.Adjuvant chemotherapy could not improve the prognosis of patients with stage Ⅱ colorectal cancer.

Objective To investigate the risk factors for locally recurrent rectal cancer after radical resection.Methods The clinical data of 50 locally recurrent rectal cancer patients (recurrent group) and 100 matched controls (control group) who received radical resection at the Sixth Affiliated Hospital of Sun Yat-Sen university from January 2000 to March 2009 were retrospectively analyzed.Factors including tumor location,postoperative chemotherapy,tumor differentiation,vascular or neural invasion,T stage,tumor diameter,number of lymph nodes dissected and number of positive lymph nodes of the 2 groups were analysed by univariate analysis,and factors correlated with tumor recurrence were screened out.All data were analyzed using the chi-square test,t test,Wilcoxon test or Logistic regression analysis.Results All the patients were followed up till January 2013,and the median time of follow-up was 52 months.Twenty-two patients in the recurrent group and 32 patients in the control group died during the follow-up.The results of univariate analysis showed that there were significant differences in tumor location and T stage between the 2 groups (x2 =6.407,9.652,P ＜ 0.05).There were no significant differences in postoperative chemotherapy,tumor differentiation,vascular and neural invasion,tumor diameter,number of lymph nodes dissected and number of positive lymph nodes between the 2 groups (x2 =1.349,0.342,0.656,Z =7142.5,8214.5,7241.5,P ＞ 0.05).The results of multivariate analysis showed that tumor location and T stage were the factors correlated with the tumor recurrence after radical resection (Wald =3.954,5.615,P ＜ 0.05).Compared with upper rectal cancer,the local recurrence rate was not significantly different in the middle rectal cancer (OR =1.893,P ＞ 0.05),whereas the lower rectal cancer had a higher local recurrence rate (OR =3.201,P ＜0.05).Compared with patients in T2 stage,the local recurrence rate was not significantly different in patients in T3 stage (OR =4.913,P ＞0.05),while patients in T4 stage had a higher local recurrence rate (OR =16.103,P ＜ 0.05).Conclusion Locally recurrent rectal cancer is closely related to tumor location and T stage,which indicates that factors reflecting the extent of surgical resection (such as circumferential margin) are of great importance in assessing the prognosis and making subsequent treatment schedule.

Objective To investigate the relationship between body mass index (BMI) and blood pressure in non-stroke population with over 50 years old from Dongcheng District and Shijingshan District of Beijing.Methods A total of 9 524 of non-stroke population with over 50 years old were selected as our subject,which were sampled from Dongcheng District and Shijingshan District of Beijing by using stratified cluster random sampling method.Investigation and physical inventory check were conducted on all subbjects conduct,and the results was statistical analyzed by using SPSS 17.0 software.Results Systolic blood pressure and diastolic blood pressure of all subjects increased with the increasing of BML The prevalence of hypertension of three age groups were significant different between male and female (Z =-50.47,P ＜ 0.001).The prevalence of hypertension in males with 50-59 years old was considerably higher than that of females (x2 =14.74,P ＜0.001).However,the prevalence of hypertension in females with 60-69 years old and ≥70 years old group were higher than that of males (x2 =12.39,P ＜ 0.001 ; x2 =10.36,P =0.001).Overall,the prevalence of hypertension between males and females was no significant (male for 37.9％,female 37.3％,x2 =0.31,P =0.578).BMI increased with the increasing blood pressure levels and prevalence of hypertension,taking the people with BMI ＜ 18.5 kg/m2 as reference,OR values of the risk for male people with BMI 18.5-24.0kg/m2,24.0-28.0 kg/m2,and ≥ 28.0 kg/m2 to get hypertension people were 1.622 (95％ CI:0.653 -4.029),2.405 (95％ CI:0.940-5.940),4.248 (95％ CI:1.709-10.559) respectively,while for female people were 2.212 (95％ CI:1.193-4.104),3.870 (95％ CI:2.092-7.157),6.603 (95％ CI:3.557 -12.258) respectively.Conclusion Overweight and obesity are risk factors of hypertension.Obesity control contributes to the prevention and treatment of hypertension in middle-aged and elderly population.

Objective To evaluate the feasibility of sentinel lymph node(SLN) mapping with CT lymphography (CT-LG). Methods Twenty-five patients with confirmed breast cancer and no palpably axillary lymph node underwent CT-LG examination. The first one or more lymph nodes along the lymph duct draining from the injection sites to axilla were defined as SLNs, and then the LG results were compared with sentinel lymph node biopsy (SLNB). The over- and underestimation of LG were evaluated. The quality of LG imaging was classified Grade Ⅰ and Ⅱ according to lymph duct appearance on volume rendering (VR). The body mass index (BMI) ＞ 25 was considered obesity. Fisher exact test was used for the statistics. Results (1)Of 25 patients, 5 had local mastectomy history. BMI ＜ 25 was found in 20 cases, and ≥25 was in 5 cases. (2) All SLNs were showed by CT-LG, and Grade Ⅰ and Ⅱ imaging quality were achieved in 21 cases ( 84. 0% ) and 4 cases ( 16. 0% ), respectively. The obese patient tended to have a poor imaging quality ( P ＜ 0. 05 ). (3) Fifty-six SLNs and 45 lymph ducts in all 25 patients were identified on CT-LG. Compared with the results of SLNB, 7 cases ( 28. 0% ) and 9 cases ( 36. 0% ) were over- and underestimated respectively by CT-LG due to obesity and local mastectomy ( P ＜ 0. 05 ). (4) Fifty-two negative SLNs in 18 patients and 15 positive SLNs in 7 patients were confirmed by pathology through SLNB, while 56 SLNs were delineated on CT-LG with 43 negative and 13 positive. The shape in 32. 6% of the negative SLNs (14/43) and 76. 9% of the positive SLNs (10/13) was round,the difference was significant (P＜0. 05). The filling defect on the center in 9.3% of negative SLNs (4/43) and 23. 1% of positive SLNs (3/13) was demonstrated, and irregular filling defect on the margin was found only in 30.8% of positive SLNs (4/13). 3 SLNs in 2 patients combined with small satellite lymph nodes on CT-LG were also confirmed to have tumor infiltration. Conclusion CT-LG can clearly demonstrate the breast lymphatic pathway and may potentially be used for breast SLN mapping, while the imaging quality can be influenced by the obesity and local mastectomy.