[Summary] The basic data and serum targets of 3 349 residents were collected by multi stage stratified cluster random sampling and analyzed by correlation and regression analysis to access its association with cardiovascular risk factors. The result showed that morbidity of hyperuricemia was 18. 85% . The risk of hyperuricemia was raised in people with high triglycerides, high low-density lipoprotein-cholesterol ( LDL-C), low high-density lipoprotein-cholesterol(HDL-C), and low estimated glomerular filtration rate(eGFR). The people with hyperuricemia are usually accompanied with many cardiovascular risk factors.

Objective To study the effect of annexin A1 on cardiac function,tumor necrosis factorα(TNF?α),and interleukin 1β(IL?1β)in diabetic rats. Methods Twenty?four SD rats were randomly divided into normal control and diabetic groups. The type 2 diabetes model was in?duced with a high?glucose and high?fat diet and administration of low?dose streptozotocin.Left ventricular end?diastolic volume(LVEDV),left ven?tricular end?systolic volume(LVESV),peak velocity of early diastolic mitral?to?late diastolic peak velocity(e/a)ratio,left ventricular ejection frac?tion(LVEF),and stroke volume(SV)were measured by using color Doppler ultrasonography at the end of week 8. The expression levels of TNF?αand IL?1βin blood were measured by using enzyme?linked immunosorbent assay,and the expression level of annexin A1 in blood was measured at weeks 0,4,and 8 by using real?time polymerase chain reaction. Results Compared with the normal control group,the diabetic group had de?creased LVEDV,e/a,and SV(P<0.05).The annexin A1 expression level in the diabetic group decreased significantly after 8 weeks(P<0.01). The TNF?αand IL?1βlevels in the diabetic group were significantly higher than those in the normal control group(P<0.05)and increased signifi?cantly after 8 weeks(P<0.01). Annexin A1 level correlated with the TNF?αand IL?1βlevels in the diabetic group(P<0.01). Conclusion Annexin A1 expression shows an anti?inflammatory effect that improved the cardiac function of diabetic rats.

To understand the genetic origin and variation of porcine epidemic diarrhea virus (PEDV) prevailing in Henan province,a total of 22 PEDV positive samples from suckling piglets with severe diarrhea were collected from 16 pig farms and amplified by RT-PCR.ORF3 genes were then cloned into pMD18-T vector and sequenced.The result of sequencing showed that the length of ORF3 genes all were 675 bp which encoded 224 amino acids.The strains in this study had eight amino acid substitutions when compared with CV777 strain.The nucleotide homologies of the 22 strains were 95.9％-100％ and amino acid homologies were 96.4％-100％.By comparing with those of European strain CV777 and vaccine strain truncated CV777,the nucleotide homologies were 97.1％-97.9％ and 94.8％-95.4％,respectively.Based on the phylogenetic relationship of ORF3 genes,the PEDV field strains and PEDV reference strains could be divided into two groups,and all the field strains identified in this study belong to group 2.It suggested that prevalent PEDV strains in this study seem to be closely related to Henan isolates in previous years,domestic strains,Janpanese strains,American strains as well as Korean strains but differ genetically from European strains or vaccine strains used in China.This experiment analyzed the ORF3 gene sequence features in prevailing of Henan region in recent years,which provides a new support of epidemiology study and protein function research of PEDV ORF3 gene.

Objective To investigate the association of urinary albumin-to-creatinine ratio (UACR) and the diameter of retinal vessel in population with essential hypertension in Fujian coastal area.Methods Central retinal artery and vein equivalents (CRAE and CRVE) were measured from the avoiding mydriatic digitized photographs and semi-automatic fundus analysis software,as well as albumin and urine creatinine.Results There were significant differences in CRAE levels among the normal control group,normoalbuminuria with essential hypertension group and microalbuminuria with essential hypertension group [(135.68 ± 10.10) μm,(129.79 ± 10.48) μm,(125.29 ± 11.17) μm,all P values ＜0.01].The CRAE levels were significantly negative correlated with UACR (r =-0.29,P ＜ 0.01).Linear regression analysis showed CRAE was associated with UACR in the patients with hypertension(β =-5.0,P ＜ 0.01).Logistic regression analysis showed,systolic blood pressure (β =1.08,P =0.02) was risk factor for CRAE abnormality.The CRAE abnormality was increased in turn in the normal control group,normoalbuminuria with the essential hypertension group and microalbuminuria with essential hypertension group (P ＜ 0.01).Conclusion The reduction of central retinal artery diameter are associated with the hypertensive renal damage.UACR and CRAE could be used to evaluate the microvascular lesions and be used as an indicator to assess the target organs damage in essential hypertension patients.

Objective: To explore the relationship of plasma apelin and angiotensin II (Ang II) with hypertension and hypertension caused early renal damage in order to provide the information for hypertension treatment. Methods: A total of 671 participants were enrolled in this cross-sectional community investigation. All participants were above 30 years of age with local residency longer than 5 years and were divided into 2 groups: Control group,n=354 non-hypertension subjects and Hypertension group,n=317 patients with essential hypertension. The levels of apelin, Ang II, urine creatinine and urinary albumin were examined. The relationship between blood pressure and the ratio of urinary albumin to urine creatinine (UACR) and the relationship between blood pressure and apelin, Ang II were studied by Pearson correlation analysis and multi linear regression analysis. Results: Compared with Control group, Hypertension group had the lower levels of apelin and higher UACR, both P<0.01. The mean arterial pressure (MAP) was negatively related to Ln (apelin), positively related to Ln (Ang II), bothP<0.01. With adjusted gender, age and blood lipids, the above relationship still existed. In Hypertension group, the patients combining with the early renal damage had the lower level of apelin and higher level of Ang II, bothP<0.01. The relevant analysis indicated that Ln (UACR) was negatively related to Ln (apelin), positively related to Ln (Ang II), bothP<0.01. With adjusted gender, age, MAP and blood lipids, the above relationship still existed. Conclusion: The patients with hypertension or hypertension caused early renal damage have decreased apelin. Apelin is negatively related to Ang II, therefore, apelin might be used as a target for hypertension treatment in clinical practice.

Objective To study the expression of mitochondrial tumor suppressor gene 1 (MTUS1) mR-NA in papillary thyroid carcinoma(PTC).Methods Reverse transcription polymerase chain reaction(RT-PCR) was used to detect MTUS1 mRNA level in 68 cases of human PTC and the adjacent non-cancerous epithelium (NCE) specimens.Results The relative expression value of MTUS1 mRNA in PTC was 0.31 ± 0.09,while it was 0.65 ±0.12 in NCE.The difference had statistical significance between the 2 groups(t =2.39,P ＜0.05).In PTC,mRNA expression of MTUS1 gene was related to the pathological grade,and lymph node metastasis(P ＜ 0.05)while it was not related to patients' age,sex,differentiation degree,tumor size or TNM stage(P ＞ 0.05).Conclusion mRNA expression of MTUS1 gene is lower in PTC than in NCE,which may play an important role in carcinogenesis and progression of PTC.

Objective To explore the effect of resveratrol on the expression of matrix metalloproteinases-9 (MMP-9) in soluble CD40 ligand (sCD40L)-activated macrophages. Methods Human monocytic cell line THP-1 cells under an inducing of phorbol ester differentiated into macrophages. Then the macrophages were sitimulated by sCD40L independently and after a preincubation with resveratrol. The mRNA expression of MMP-9 and tissue-inhibitor of metalloproteinase-1 (TIMP-1) in macrophages were investigated by semiquantitative RT-PCR. The secretions of MMP-9 and TIMP-1 protein were measured by Western blot. The MMP-9 activity was analyzed by gelatin zymography technique. Results The expressions of MMP-9 gene(1.53±0.04 vs. 0.75±0.01,P＜0.05) and protein(244 930.8±31 268.6 vs. 192 976.8±20 223.1,P＜0.05)were higher in macrophages when stimulated by sCD40L. Resveratrol (10 μmol/L and 50 μmol/L)can inhibit the CD40L-induced gene expression and the protein secretion of MMP-9 (P＜0.01). The activity of MMP-9 was degraded by resveratrol (P＜0.05). Meanwhile resveratrol could increase the gene expression and protein secretion of TIMP-1 (P＜0.05). Conclusions Resveratrol can inhibit the CD40L-activated macrophage expression of MMP-9. It may be one of its mechanisms on antiatherosclerosis and stabilization of atheromatous plaques.

ObjectiveTo investigate the effect of resveratrol on the expressions of E-selectin and monocyte chemoattractant protein-1 (MCP-1) in activated endothelial cells.Methods After being pretreated with resveratrol followed by tumor necrosis factor-α (TNF-α) stimulation, human umbilical vein endothelial cells (HUVEC) were randomly divided into three groups: TNF group,resveratrol+TNF-α group and control group. The expression of E-selectin molecule on the surface of HUVEC was detected by flow cytometric analysis and the mRNA expressions of E-selectin and MCP -1 were determined by semiquantitative RT-PCR. ResultsTNF-α induced the expression of E-selectin and MCP-I of HUVEC.Resveratrol (10 μmol/L) inhibited E-selectin expression.The positive cells of E-selectin in TNF group, resveratrol + TNF-α group and control group were(47.84±3.2)%, (15.3±1.7)% and (3.74±1.6)%, respectively, and the differences among the three groups were statistically significant (P<0.05). Conclusions Resveratrol may contribute to the anti-atherosclerotic effect by inhibiting the expression of E-seleetin and MCP-1 of HUVEC.

Objective:To explore changes of central retinal vascular caliber and fractal dimension (Df) and their cor‐relation with blood pressure in hypertensive population .Methods :A total of 2169 subjects>30 years old were en‐rolled in this cross‐sectional study .They were divided into hypertension group (n=819) and non‐hypertension group (n=1350) .Fundus photos were collected in all subjects ,and semi‐automatic software was used to quantitatively ana‐lyze central retinal vascular caliber and Df ,and they were compared between two groups .Results:Compared with non- hypertension group ,there were significant reductions in central retinal arteriolar equivalent [CRAE ,(135.2 ± 10.72) μm vs .(132.25 ± 11.56) μm] ,central retinal venular equivalent [CRVE ,(184.95 ± 16.29) μm vs . (182.52 ± 17.07)μm] and Df [ (1.38 ± 0.05) vs .(1.34 ± 0.05)] in hypertension group , P<0.01 all .After adjus‐ting for age and gender ,analysis of covariance indicated that CRAE and Df of hypertension group were still signifi‐cantly lower than those of non - hypertension group (P<0.01 both) .Linear correlation analysis indicated that sys‐tolic blood pressure (SBP) ,diastolic blood pressure (DBP) and pulse pressure (PP) were inversely correlated with CRAE and Df ( r= -0.340~ -0.174 , P<0.01 all) .After adjusting for cardiovascular risk factors ,multi‐factor linear regression analysis indicated that CRAE and Df were still inversely correlated with SBP ,DBP and PP (stand‐ardizedβ= -0.190~ -0.134 ,P<0.01 all) .Df of hypertension course >5 years group was significantly lower than that of ≤5 years group [ (1.33 ± 0.05) vs .(1.35 ± 0.05)] , P<0.01. Conclusion:CARE ,Df are significantly in‐versely correlated to SBP ,DBP and PP in hypertensive population ,while correlation of Df is most .

Objective To study the relationship between the severity of diastolic heart failure(DHF)and bone mineral density in the elderly. Methods Totally 80 elderly patients aged over 80 years who were tested as normal for cardiac diastolic function by Doppler tissue imaging(DTI) were selected and divided into four groups by the e/a ratio,i.e.,the normal group(n=18),the DHF 1 group(0.8≤e/a<1,n=25),the DHF 2 group (0.6≤e/a<0.8,n=22),and the DHF 3 group(e/a<0.6,n=15). And the other 20 healthy people by physical examination were set as the normal control group.All subjects underwent bone mineral density(BMD)measurement(including femoral neck,total femoral hip and lumbar vertebra 1?4) by dual energy X?ray absorptiometry. Results Bone mineral density(BMD)was significantly decreased(P<0.05)in DHF groups(DHF 1,DHF 2,and DHF 3). Bone mineral density significantly decreased along with the severity of DHF. Bone mineral density was positively correlated with the e/a ratio in the elderly with DHF(r=0.75,P<0.01). Conclusion The severity of diastolic heart failure is closely related to bone mineral density in the elderly. The severity of diastolic heart failure could predict osteoporosis.