AIM: To discuss the effects of matric metalloproteinasez and tissue inhibitor 1 (MMP2/TIMP1) on the vascular remodeling after angioplasty and the regulatory effect of tongxinluo on it in rabbits. METHODS: 65 male white rabbits (2.5-3.5 kg; 6-8 months) were divided into 4 groups: control group (n=5, normal diet ), injury group (n=20, normal diet plus intimal injury), high-lipid group (n=20, high cholesterol diet plus intimal injury) and tongxinluo group (n=20, tongxinluo 0.5 mg?kg~-1?d~-1, 4 weeks, also high cholesterol diet plus intimal injury). Under X-ray the narrow parts of the vessel underwent angioplasty. All rabbits were killed and vessel samples were excised, respectively, for the detection of histomorphometry immunohistochemically and RT-PCR. The data were expressed as ?s. RESULTS: (1) The change of vascular morphological results showed that the intimal area in tongxinluo group was less than that in high-lipid group (P

Objective To explore the value of cardiac troponin-I (cTnI), B-type natriuretic peptide (BNP) and blood lactic acid (Lac) on evaluation of severity and prognosis in patients with septic myocardial dysfunction (SMD). Methods According to retrospective analysis of clinical data,161 cases with sepsis were divided in to SMD group and non-SMD group. And the SMD group was further divided in to death group and survival group. Blood cTnI, BNP and Lac value in each group were detected respectively. The ROC curve was used to evaluate the forecast value of cTnI, BNP and Lac on prognosis for patients. Results The value of cTnI, BNP and Lac in SMD group were significantly higher than those in non-SMD group(P<0.05);The value of cTnI, BNP and Lac in death group among the SMD patients were significantly higher than those in survival group(P<0.05);cTnI, BNP and Lac contribute to predict the 28 day mortality rate of SMD. Conclusions Blood cTnI, BNP and Lac contributes to the assessment of the severity and the prognosis of septic patients with myocardial dysfunction.

Objective: To investigte the lipogenic and lipolytic metabolism at dynamic phase of obesity in ventromedial hypothalamus-lesioned obese rats. Methods: Female SD rats were divided into two groups, one group received bilateral electrolytic lesions of ventromedial hypothalamus(VMH),and the other one was used as sham control. Samples of blood, livers and subcutaneous, parametric and mesenteric adipose tissues were collected one week after VMH lesions and sham operations. Results: Activities of microsomal triglyceride transfer protein(MTP) in hepatocytes, and phosphatidate phosphohydrolase (PAP), malic enzyme(ME), glucose-6-phosphate dehydrogenase(G6PDH)in liver, parametric and mesenteric adipose tissue in VMH-lesioned rats were increased as compared to their sham counterparts. Activity of hormone sensitive enzyme(HSL) in parametric and mesenteric adipose tissue in VMH-lesioned rats was not changed when compared to sham group. Activity of HSL in subcutaneons adipose tissue was increased, while activity of HSL in gastrocnemius was decreased. Activity of lipoprotein lipase(LPL) in parametric and mesenteric adipose tissue and gastrocnemius were enhanced significantly compared to sham group. Conclusion: In dynamic phase of obesity of VMH-lesioned rats, hepatic production and transportation of triglyceride in these rats were increased significantly ,and lipogenic metabolism and storage of triglyceride in adipose tissues such as parametric and mesenteric adipose tissues were also enhanced.Meanwhile, lipolytic metabolism in subcutaneous adipose tissue and gastrocnemius was also increased.

Objective: To investigate activities of lipo-related enzymes in ventromedial hypothalamic obese rats at acute phase in fed state. Methods: Female SD rats were divided into two groups, one group received bilateral electrolytic lesions of ventromedial hypothalamus(VMH), and another one was used as sham control. Samples of blood, livers, and subcutaneous, parametric and mesenteric adipose tissues ,and gastrocnemius were collected one week after VMH lesions and sham operations in fed state. Results: Serum insulin in VMH group was higher than that in sham group, meanwhile serum free fatty acids in VMH group were lower (P

Objective Hyperglycaemia and hyperlipid are common in clinical cardiovascular disease .The article was to ob-serve the change of endothelial and the expression of Rho-kinase in the aorta of rats with hyperglycaemia and hyperlipid and the rela-tionship between them .Methods Healthy male Wistar rats were randomly divided into 3 groups:5 as normal control group , 10 as model group and 10 as drug intervention group .The latter two groups were given high-fat diets for 5 weeks after tail vein injection of streptozocin (STZ) to establish hyperglycaemia and hyperlipid models , then fasudil (inhibitor of Rho-kinases) or saline were respec-tively given intraperitoneally for 4 weeks.Venous blood glucose (VBG), blood lipid levels, ET-1 and eNOS were tested, along with the expression of MYPT-1(the protein substrates of ROCK)、mRNA of RhoA and ROCK. Results Compared with normal control group, the levels of VBG、ET-1、MYPT-1、mRNA of ROCK and Rho A were increased in model group[(6.18±1.14)mmol/L vs (26.36± 3.25)mmol/L,(72.13±6.13 )pg/mL vs (88.22±4.61) pg/mL, (0.54±0.08) v s (1.28±0.17),(0.16±0.20) vs (0.83± 0.12),(0.40±0.18) vs (0.78±0.13),P<0.05].TG、TC、LDL were also higher in model group(P<0.05), while eNOS level was lower in model group than in control group[(24.42±2.13)U/L sv (17.36±1.58)U/L,P<0.05].Compared with model group, the levels of VBG[(17.70±2.69)mmol/L]、TG、TC、LDL, ET-1 [(75.03±2.50)pg/mL]、MYPT-1(0.74±0.01)、mRNA of ROCK(04.0±0.08) and Rho A (0.25±0.07)in drug intervention group were lower(P<0.05), while eNOS level (0.74±0.11) was higher(P<0.05) in drug intervention group than in model group . Conclusion Endothelial dysfunction and over-expression of Rho kinase can be found in hyperglycaemia and hyperlipid rat models .Fa-sudil could improve endothelial function .

Objective This study was to understand the structure characteristics of prophages in the genome of Enterococcus hirae R17,and also to analyze their interaction relationships with the host bacterium.Methods The gene distribution and gene encoding characteristics of prophages in the genome of Enterococcus hirae R17 were identified using the PHAST software.The virulence gene,antimicrobial resistance genes,and environmental resistance genes in the prophages were also analyzed.Results Three prophages were found on the chromosome of Enterococcus hirae,including two incomplete prophage elements (Prophage-1 and Prophage-2) and one complete prophage (Prophage-3).Some function genes of bacteria were found in the sequence of three prophages,including nucleotide transportation and metabolism related genes.One incomplete prophage carrying erythromycin-and bacitracin-resistance genes was identified in the plasmid,which suggested that prophage induced gene horizontal transfer caused erythromycin-and bacitracin-resistance of Enterococcus hirae R17.Conclusion This study laid a solid foundation for the diversity analysis of prophages of Enterococcus hirae.Prophages played an important role in promotion of antimicrobial resistance of enterococci.Scientists should pay more attention to the spread of antimicrobial resistance and pathogenicity induced by prophages.

Objective To investigate the effect of oil with medium-long-chain triacylglycerols on blood lip- id and lipoproteins in hyperlipemic patients. Methods Totally, 112 patients with hypertriglyceridemia were en- rolled and randomly divided into MLCT group (consumed oil with medium-long-chain fatty acids) and LCT group (consumed oil with long-chain fatty acids) (both 25-30 g/d for 8 weeks). Patients in both two groups were also instructed to take exercises. Height and weight were measured at baseline and 8 weeks later. Blood glucose, serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), total cholesterols (TC), triglyc- erides (TG), high density lipoprotein cholesterol, low density lipoprotein cholesterol, apolipoprotein Al (ApoAl), ApoB, ApoA II , ApoC2, ApoC3, and ApoE were measured and compared. Results At the end of study, 101 subjects were included. There were 50 subjects left in LCT group and 51 subjects left in MLCT group, respectively. There was no significant difference in weight, ALT, AST, TC, and TG at baseline between two groups (P>0.05). Eight weeks later, weight, serum TG, ApoC2, and ApoC3 were significantly lower and ApoAl level was significantly higher than those at baseline in MLCT group (P < 0.05). At the end of study, the decreases in body weight and blood biochemical variables including TG, ApoB, ApoA II , ApoC2, ApoC3 were significantly much greater in MLCT groups than those in LCT group (P < 0. 05). Conclusion When the diet is reasonably controlled, oil of medium-long-chain triacylglycerols may reduce the concentration of TG and improve the levels of apolipoproteins.

Objective To investigate the effects of microRNA-29a (miR-29a) on lipopolysaccharide (LPS)-induced apoptosis in human monocytes THP-1 cells in order to understand the molecular mechanisms.Methods Human monocytes THP-1 cell line were exposed to LPS after transfected with miR-29a inhibitors (100 nmol/L) or just transfected with miR-29a mimic (100 nmol/L) by lipofectamine RNAiMAX.Flow cytometry (FCM) was used to detect the cell apoptosis.Real-time RT-PCR was employed to measure expressive levels of the gene Bcl-2 and Mcl-1.The luciferase assay was performed in HEK293T cells,which were co-transfected with plasmid DNA and miRNA by using Lipofectamine 2000.Statistical analysis carried out by using SPSS 13.0 software for One-way ANOVA and Student' s t test.Results Transfection with miR-29a mimics for 48 h increased apoptosis rate and significantly reduced the expressions of Bcl-2 and Mcl-1 in THP-1 cells in comparsion with the control group.The apoptosis rate also raised in THP-1 cell stimulated by LPS for 24 h followed by LPS stimulation for 24 h,the apoptosis rate was decreased in comparison with the LPS group.In addition,our luciferase assay data showed that HEK293T cells cotransfected with miR-29a mimics and Bcl-2 3 ' UTR-Wt or Mcl-1 3' UTR-Wt plasmid significantly reduced the luciferase activity compared with the control group.Conclusions The miR-29a may regulate apoptosis by targeting the genes Bcl-2 and Mcl-1,and miR-29a may play a pivotal role in the process of apoptosis in immune cells.

Objective: To investigate how fatty liver was developed in ventromedial hypothalamus(VMH)-lesioned obese rats. Methods: Two groups of rats were prepared: (1)VMH-lesioned obese rats, and (2)sham VMH-lesioned rats. One week after VMH lesions, livers of all rats were isolated for morphological observation and for determination of microsomal triglyceride transfer protein(MTP), phosphatidate phyosphohydrolase (PAP), malic enzyme (ME), and glucose-6-phosphate dehydrogenase(G6PDH). Results: Triglyceride contents in livers of VMH-lesoned obese rats increased significantly, and were about 1.8-fold of control group. Activities of ME, G6PDH and PAP in the livers were also enhanced markedly compared to their controls. Many lipid droplets in cytoplasm of hepatocytes from VMH-lesioned obese rats were observed, while there was no similar finding in hepatocytes of control rats. MTP activity in livers of VMH-lesioned obese rats was higher than that in livers of sham-operated non-obese rats [0.201?0.013 vs. 0.175?0.014 ?g/(mg protein?h),[WTBX]P0.05). Conclusion: Hepatic triglyceride production and activity of MTP were increased in VMH-lesioned obese rats, but magnitude of the latter did not exceed the former. This resulted in hepatic triglyceride accumulation in spite of increase in transport of triglyceride out of liver by MTP. This may contribute to the development of fatty liver in VMH-lesioned obese rats.