Animals ; Coxsackievirus Infections ; metabolism ; Enterovirus B, Human ; Female ; Male ; Mice ; Myocarditis ; metabolism ; Myocardium ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

ObjectiveTo explore the causes for descending of the serum testosterone (T) in middle-aged and elderly men with metabolic syndrome (MS).MethodsFifty-six male patients aged between 45 and 83 years old were investigated.Blood pressure,height and weight were measured,and body mass index (BMI) was calculated.Biochemical indice in fasting state [ fasting blood sugar (FBG),total cholesterol (TC),triglycerides (TG),low-density lipoprotein cholesterol(LDL-C),high-density lipoprotein cholesterol (HDL-C) ],fasting insulin (FIN),and the level of serum testosterone) were detected.An insulin resistance index (IR) was calculated using homeostasis model assessment (HOMA).Participants were divided into the MS group and the non-MS group according to CDS diagnostic standard.The relationships between the level of serum Testosterone and each index were analyzed.ResultsThe level of serum Testosterone was significantly lower in the MS group than that in the non-MS group [ (9.97 ± 3.87 ) nmol/L vs.( 13.73 ± 3.93 ) nmol/L,t =3.337,P ＜ 0.01 ].Multiple regression analysis showed that the level of serum testooterone was negatively correlated with age,waist circumference and HOMA-IR ( regression coefficients:- 0.214,- 0.329,- 0.317; standardized regression coefficients:- 0.730,- 0.597,- 0.313 ; t =- 5.833,- 4.681,- 2.686 respctively; P ＜ 0.01 ).ConclusionThe level of serum testosterone descends in middle-aged and elderly men with MS.The level of serum testosterone is closely related to age,waist circumference and insulin resistance

Animals ; Coxsackievirus Infections ; metabolism ; pathology ; physiopathology ; Enterovirus B, Human ; Female ; Glutathione Peroxidase ; metabolism ; Male ; Mice ; Myocarditis ; virology ; Oxidative Stress ; drug effects ; Selenium ; pharmacology ; Superoxide Dismutase ; metabolism

OBJECTIVETo investigate the mechanism of myocardial cell apoptosis during delayed preconditioning induced by Sini decoction (SND).

METHODSD rats were divide into four groups: control, sham, I/R and SND groups. The rats in I/R group, left anterior descending coronary artery (LAD) was occluded for 1h and reperfused for 1 h. The rats in SND group were pretreated with Sini decoction (5 g x kg(-1) x d(-1)) for three days, the last treatment was pretreated 24 h before the index occlusion. Cell apoptosis was measured by flow cytometry, cytochrome C and bcl-xl were detected by Western blotting and the activity of caspase-3 was detected by assay kit.

RESULTAs compared with I/R group, apoptosis rate of myocardial cell, the release of cytochrome C from mitochondria and the activity of caspase-3 were significantly decreased, and the expression of bcl-xl protein was elevated in SND group.

CONCLUSIONThe delayed preconditioning induced by Sini decoction decreased myocardial cell apoptosis. The mechanism may be related to the inhibition of mitochondria signal pathway of apoptosis.

Aconitum ; chemistry ; Animals ; Apoptosis ; drug effects ; Caspase 3 ; metabolism ; Cytochromes c ; metabolism ; Drug Combinations ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Ginger ; chemistry ; Glycyrrhiza uralensis ; chemistry ; Ischemic Preconditioning, Myocardial ; methods ; Male ; Mitochondria, Heart ; metabolism ; Myocardial Reperfusion Injury ; metabolism ; pathology ; Myocytes, Cardiac ; pathology ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; bcl-X Protein ; metabolism

Background: Thoracolumbar junction (TLJ) is the transitional area between the lower thoracic spine and the upper lumbar spine. Vertebral compression fractures and proximal junctional kyphosis following spine surgery often occur in this area. Therefore, the study of development and mechanisms of thoracolumbar junctional degeneration is important for planning surgical management. This study aimed to review radiological parameters of thoracolumbar junctional degenerative kyphosis (TLJDK) in patients with lumbar degenerative kyphosis and to analyze compensatory mechanisms of sagittal balance. Methods: From January 2016 to March 2017, patients with lumbar degenerative kyphosis were enrolled in this radiographic study. Patients were divided into two groups according to thoracolumbar junctional angle (TLJA): the non?TLJDK (NTLJDK) group (TLJA <10°) and the TLJDK group (TLJA≥10°). Complete spinopelvic radiographic parameters were analyzed and compared between two groups. Pearson or Spearman correlation coefficients and independent two?sample t?test or Mann?Whitney U?test were used. Results: Atotal of 77 patients with symptomatic sagittal imbalance due to lumbar degenerative kyphosis were enrolled in this study. There were 34 patients in NTLJDK group (TLJA <10°) and 43 patients in TLJDK group (TLJA ≥10°). The median angle of lumbar lordosis (LL) in the NTLJDK or TLJDK groups was 23.40° (18.50°, 29.48°) or 19.50° (13.30°, 24.55°), respectively. The median TLJAs in all patients and both groups were ?11.20° (?14.60°, ?4.80°), ?3.70° (?7.53°, ?1.73°), and ?14.30° (?17.45°, ?13.00°), respectively. In the NTLJDK group, LLwas correlated with thoracic kyphosis (TK; r = ?0.400, P = 0.019), sacral slope (SS; r = 0.681, P < 0.001), and C7?sagittal vertical axis (r = ?0.402, P = 0.018). In the TLJDK group, LL was correlated with TK (r = ?0.345, P = 0.024), SS (r = 0.595, P < 0.001), and pelvic tilt (r = ?0.363, P = 0.017). There were significant differences in LL, TLJA, TK, SS, and pelvic incidence (PI) between two groups. Conclusions:Although TLJDK is common in patients with lumbar degenerative kyphosis, it might be generated by special characteristics of morphology and biomechanics of the TLJ. To maintain sagittal balance, pelvis back tilt might be more important in patients with TLJDK, whereas thoracic curve changes might be more important in patients without TLJDK.

AIMTo establish the methods for determining the activity of sphingosine kinase(SPK) and the content of sphingosine 1-phosphate (S1P) in biological samples.

METHODSThe ECV304 cells were transfected with pcDNA3 vector encoding Flag-labeled SPK gene. The expression of SPK was measured by Western blot assay and the activity of SPK was determined by enzymatic reaction, isotope incorporation and thin-layer chromatography methods. The S1P in biological samples was extracted, digested by alkaline phosphatase and then catalyzed by SPK. The S1P contents were determined according to the amounts of products.

RESULTSSPK gene transfection could enhance the expression and activity of SPK in cells markedly, and the cellular S1P was also increased obviously. HGF stimulation could increase the activity of SPK and cellular S1P in ECV304 cells.

CONCLUSIONMethods for determining the activity of SPK and the content of SPK in biological samples were established.

Cell Line ; Cytophotometry ; Humans ; Isotope Labeling ; Lysophospholipids ; metabolism ; Phosphotransferases (Alcohol Group Acceptor) ; metabolism ; Sphingosine ; analogs & derivatives ; metabolism

AIM:To investigate the effect of sodium hydrosulfide(NaHS)on cardiac function and activity of renin-angiotensin(Ang)-aldosterone(ALD)system(RAAS)in the rats with chronic heart failure(CHF).METHODS:The CHF rat model was established by abdominal aortic coarctation.SD rats were randomly divided into sham operation group,model group,low dose of NaHS group and high dose of NaHS group(n=6).The left ventricular end-diastolic di-ameter(LVEDD), left ventricular end-systolic diameter(LVESD)and left ventricular ejection fraction(LVEF)were measured before and after treatment by echocardiography in each group.The levels of renin,AngⅡand ALD in the plasma were measured by ELISA.The expression of angiotensin-converting enzyme(ACE)and angiotensin Ⅱ type 1 receptor (AT1R)at mRNA and protein levels in the myocardium tissues was determined by qPCR and Western blot,respectively. RESULTS:After treatment with NaHS,compared with model group and before treatment,LVEDD and LVESD in low dose of NaHS group and high dose of NaHS group were decreased significantly, while LVEF was increased significantly(P<0.05).Compared with low dose of NaHS group,LVEDD and LVESD were decreased,while LVEF was increased in high dose of NaHS group(P<0.05).Compared with sham operation group,the levels of renin,AngⅡand ALD in the plasma of model group were significantly increased(P<0.05),and the expression of ACE and AT1R at mRNA and protein levels in the myocardium tissues of model group were significantly increased(P<0.05).Compared with model group,the plas-ma levels of renin,AngⅡand ALD in low dose of NaHS group and high dose of NaHS group were significantly decreased (P<0.05),and the myocardial expression of ACE and AT 1R at mRNA and protein levels was significantly down-regulated (P<0.05).The plasma levels of renin,AngⅡand ALD,and the myocardial expression of ACE and AT 1R at mRNA and protein levels in high dose of NaHS group were significantly lower than those in low dose of NaHS group(P<0.05). CONCLUSION:NaHS inhibits the activation of RAAS,thus improving the cardiac function of CHF rats,and the effect of high-dose NaHS is better than that of low-dose NaHS.

Objective To explore the diagnostic value of detecting respiratory syncytial virus(RSV)-IgM for viral pneumonia in children.Methods Seventy-six cases with interstitisl pneumonia,32 cases with bronchiolitis among 108 cases children with viral pneumonia and 40 healthy children as control group were included,RSV-IgM was detected by indirect immunofluorescence in 108 children with viral pneumonia and healthy control group.Results The positive rates of RSV-IgM in 76 cases with interstitisl pneumonia and 32 cases with bronchiolitis were 48.68% and 25.0%,respectively,there was significant difference between 2 groups(?2=5.20 P

Purpose To investigate the corr-elation between Rap1 GAP expression in colon cancer tissues and clinicopatho-logical features and prognosis.Methods Immunohistochemistry was used to detect Rap1 GAP protein expression in 125 cases of colon cancer,and its correlation with clinicopathological features and prognosis was analyzed.Rap1 GAP protein expression in co-lon cancer LOVO,HCT116,SW480 cells and normal colon epi-thelial HCoEPiC cells was detected by Western blot.The expres-sion of Rap1 GAP was down-regulated and up-regulated in LO-VO,HCT116 and SW480 cells by lentivirus transfection,and di-vided into no-load group(sh-NON,LV-NON),sh-Rap1 GAP group(low expression Rap1 GAP)and LV-Rap1 GAP group(overexpression Rap1 GAP)according to different treatments.The transfection efficiency was verified by Western blotting.MTT assay and Transwell assay were used to detect cell proliferation,invasion and migration in each group.Results In 125 colon cancer samples,83 cases(66.4％)had the loss of Rap1 GAP expression,which was higher than that in paracancer control(7.2％,P＜0.001).The rate of loss of Rap1 GAP expression was correlated with the degree of tumor differentiation(x2=6.152,P=0.011)and the presence of mucinous adenocarcino-ma(x2=4.908,P=0.028),but not with gender,age,tumor location,tumor stage,or lymph node metastasis(P＞0.05).Western blotting results showed that compared with HCoEPiC(0.189±0.081)cells,Rap1 GAP protein expression was in-creased in colon cancer LOVO(0.238±0.008)cells.Rap1 GAP protein expression was decreased in HCT116(0.064± 0.002)and SW480(0.152±0.026)cells(F=159.6,P＜0.05).After LOVO cells were transfected with Rap1 GAP low expression lentivirus,the expression level of Rap1 GAP in sh-Rap1 GAP-1 group(0.733±0.071)and sh-Rap1 GAP-2 group(0.559±0.136)and sh-Rap1 GAP-3 group(0.606±0.037)was significantly lower than that in LOVO group(1.880± 0.129)(F=49.57,P＜0.05).Compared with sh-NON(1.260±0.109)group,the proliferation ability of sh-Rap1 GAP-2(1.569±0.059)and sh-Rap1 GAP-3(1.548±0.087)cells was significantly increased at 72 h(F=28.36,P＜0.05).Its invasion and migration ability were significantly increased(P＜0.05).After HCT116 cells transfected with overexpression lentivirus,the expression of Rap1 GAP protein in LV-Rap1 GAP group(1.395±0.137)was relatively higher than that in LV-NON group(0.485±0.097)(P＜0.05).The results of MTT assay showed that compared with LV-NON(0.652±0.047)group,the proliferation ability of cells in LV-Rap1 GAP(1.212 ±0.038)group was decreased,and the invasion and migration ability were significantly decreased(P＜0.05).The transfection results,proliferation,invasion and migration of SW480 cells were consistent with those of HCT116 cells.Conclusion The loss rate of Rap1 GAP expression is related to the differentiation degree of colon cancer and whether it is accompanied by mucin-ous adenocarcinoma.The up-regulation of Rap1 GAP expression can inhibit the proliferation,invasion and migration of colon cancer cells,providing a theoretical basis for exploring the occur-rence and development of colon cancer.