Animals ; Cell Differentiation ; Cell Movement ; Chemokine CXCL12 ; metabolism ; Endothelial Cells ; pathology ; physiology ; Humans ; Muscle, Smooth, Vascular ; pathology ; physiology ; Receptors, CXCR4 ; metabolism ; Stem Cells ; metabolism ; pathology ; physiology ; Vascular Diseases ; metabolism ; pathology ; physiopathology

Objective To investigate the patterns of frequency domain indexes of surface electronic signals of adolescent idiopathic scoliosis (AIS) patients' paraspinal muscles by using surface electromyographic (sEMG) techniques .Methods 25 AIS patients enrolled, 7 males, 18 females, ages range from 11 to 21 years old. All of the enrolled patients undertook the Biering Sorensen test(BST) and the object-lifting test, a Finland made type ME3000P sEMG instrument was applied to record the electronic activities of paraspinal muscles(convex /concave) of all subjects, and the frequency domain indexes: median frequency(MF）,mean power frequency(MPF）, zero crossing rate(ZCR）were analyzed.Results The wave amplitudes and scales of paraspinal muscles electronic frequency domain indexes(MF, MPF, ZCR) were lower than the other tested positions when recorded at the zone of apex vertebrae, and MFslope, MPFslope and ZCRslope all showed a linear degressive tendency as the exercise time was extended.Conclusion Paraspinal muscles at the zone of apex vertebrae have low fatigue durabilities and more likely to be exhausted. sEMG ought to be one of the objective examinations used to evaluate the differences of electronic activities of paraspinal muscles(convex /concave) of AIS patients, and may have a promising value in clinical practice.

Air ; analysis ; Chromatography, Gas ; methods ; Ethylene Oxide ; analysis ; Furans ; analysis ; Methylene Chloride ; analysis ; Workplace

This article was aimed to study effect of D-ribose on the high-energy phosphate metabolism of skeletal muscle tissues of tired mice. The model was made by burden swimming. And then, the mice were divided into four groups, which were the model group, D-ribose group, caffeine group, and D-ribose with caffeine group). Intragastric administrations of drugs were given to all mice in four groups, three times per day. And all mice continued to swim for three days. The time of swimming was recorded. Gastrocnemius of mice were removed after swimming or 3 days later to measure the concentration of ATP, ADP, AMP and IMP with the HPLC. The results showed that compared with the control group, the time of burden s wimming was significantly prolonged for mice in the D-ribose group and the D-ribose with caffeine group. After three-day recovery, the concentration of ATP, AMP and IMP of gastrocnemius in the D-ribose group and the D-ribose with caffeine group mice was significantly increased. There was no significant difference in the caffeine group mice. It was concluded that D-ribose is involved in the high-energy phosphate metabolism of skeletal muscle tissues of tired mice . D-ribose promotes the recovery of ATP concentration in the gastrocnemius of tired mice, and prolongs the time of burden swimming. Therefore, it has a certain anti-fatigue effect .

Objective To establish a human ovarian carcinoma cell line with directional highly lymphatic metastasis and to study their biological characteristics.Methods The clone cells of ovarian carcinoma,SKOV3,were inoculated into the hind foot pad of nude mice.The cancer cells of lymph node metastatic foci were transplanted into nude mice again when the metastatic nude of mice were observed.After repetition of this procedure for 3 cycles,the metastatic rate and the metastatic paths were observed in nude mice of every passage.We used limited dilution method to separate and select colonial cells with directional highly lymphatic metastatic potentials from the lymphatic metastasis of human ovarian carcinoma cell line SKOV3.The ceils with biological characteristics were assayed by growth curve,HE staining,karyotype analysis,nude mice transplantation and immunohistochemistry,respectively.Results We established a series of cell lines from lymph node metastasis and designated them as SKOV3-PM1,SKOV3-PM2 and SKOV3-PM3 cell strain.When the cells of SKOV3-PM3 were injected into the hind foot pad of nude mice, they produced 100%(10/10)spontaneous lymphatic metastasis.The lymphatic metastatic rates(26/10) were stable and higher than the mother cell line(1/10,P

Objective To determine the relationship between polymorphism of apolipoprotein E gene (APOE) and electroencephlogram in patients with mild/moderate traumatic brain injury. Methods (1) Venous blood for 2 ml was collected from 81 patients with mild/moderate traumatic brain injury on admission. APOE genotype was identified by PCR restriction fragment length polymorphism ( PCRRFLP). (2) All the patients were monitored by electroencephalogram for 2-3 times within a week after injury. X2 test and logistic regression analysis via SAS version 8.2 were performed to analyze the results of genotype and electroencephalogram and clinical data. Results The distributions of genetypes and alleles among 81 patients matched with Haldy-Weinberg Law. The findings of electroencephalogram were significantly different between patients with and without APOEε4 (P<0.05). Ten (63%) out of 16 patients with APOEε4 showed an aggravated electroencephalogram,while only 16 (25%) out of 65 patients without APOEε4 showed the same results of electroencephalogram. Logistic regression analyses showed that APOEε4 was a risk factor for electroencephalogram aggravation after traumatic brain injury. Conclusion APOEε4 is a risk factor for electroencephalogram aggravation during acute stage after mild/moderate traumatic brain injury.

Objective To explore the influence of network intervention on lifestyle and behaviors habit of the middle -aged patients with hypertension.Methods All 300 middle -aged patients with hypertension were randomly assigned into the study group and the control group.Each group had 150 cases.All patients in the both two groups were given hypotensive drugs according to treatment specification of hypertension.The patients in the study group received a network intervention for 2 years,while the patients in the control group received an outpatient service follow-up.The difference of lifestyle and behaviors habit of the patients in the two groups were observed and compared. Results There were no significant differences with all items of the lifestyle and behaviors habit of the patients between the two groups before intervention(P >0.05 ).In the 12th end of month after intervention,there were no significant differences between the two groups with the items of smoking control,working and resting regularly,hobby and psychological balance(P >0.05),but other items in the study group were significantly better than those in the control group(Z =-3.062,-2.509,-2.239,-2.056,-2.126,-2.045,-2.023,all P <0.05).In the 24th end of month after intervention,all items in the study group were significantly better than those in the control group (Z =-4.078,-3.792,-2.080,-2.098,-1.985,-2.478,-2.173,-2.478,-3.290,-2.514,-2.730,all P <0.05 ).Conclusion The network intervention can significantly improve lifestyle and behaviors habit of the middle -aged patients with hypertension.Its effect is much better than that of outpatient service follow -up.

[ ABSTRACT] AIM: To observe the effects of TNF-α/nuclear factor-κB( NF-κB) /matrix metalloproteinase-2 (MMP-2) pathway on the expression of MMP-2 in the mice with viral myocarditis.METHODS: Six-week-old inbred male mice were randomly assigned to control and myocarditis group.The mice in myocarditis group and control group were intra-peritoneally inoculated with 0.1 mL 10-5.69 TCID50 /mL coxsackievirus B3 and vehicle (PBS), respectively.Ten mice were sacrificed at the 4th and 10th days after injection.The blood and heart specimens were harvested.The serum content of TNF-αwas measured by ELISA.The myocardial levels of MMP-2, NF-κB p65 and IκBαwere determined by Western blot.RESULTS: Compared with control group, the protein expression of MMP-2 and NF-κB p65 in the myocardium and the serum content of TNF-αwere significantly increased in myocarditis group (P <0.05).The protein expression of IκBαwas lower in myocarditis group than that in control group (P <0.05).CONCLUSION: TNF-α, NF-κB p65 and MMP-2 were higher in the mice with acute viral myocarditis.The increased expression of them might be involved in the pathogene-sis of viral myocarditis.

OBJECTIVETo investigate the semen quality and its influencing factors in preconception males in Nanjing area so as to provide some evidence for working out effective intervention measures.

METHODSTotally 687 men receiving preconceptional physical examination were enrolled in this study. A questionnaire survey was conducted among the subjects along with an analysis of their semen quality.

RESULTSThe median of sperm concentration was 63.3 x 10(6)/ml (95% CI [19.88-119] x 10(6)/ml). The median of grade a sperm was 33.03% (95% CI [19.38-55.05]%), that of grade a + b sperm was 52.08% (95% CI [39.53-69.37]%), and that of teratosperm was 91.75% (95% CI [69-100]%). The median concentration of seminal plasma PMN-elastase was 195.55 ng/ml (95% CI [76.16-3330.38] ng/ml) and that of seminal plasma zinc was 7.62 μmol/L (95% CI [1.5-23, 45] μmol/L). The positive rates of Ureaplasma urealyticum (UU), Chlamydia trachomatis (CT), and Gardnerella vaginalis (GV) were 42.4%, 0.3%, and 2.4%, respectively. The median of sperm DNA fragmentation index (DFI) of those whose wives had a history of adverse pregnancy was 20.25% (95% CI [2.15-68.25]%). Multivariate logistic regression analysis suggested that mental stress (OR 1.567, 95% CI [1.081-2.27]) and sedentariness (OR 1.772, 95% CI [1.211-2.592]) were independent risk factors for asthenospermia.

CONCLUSIONThe sperm quality of preconception males in Nanjing area is not encouraging, and it can be improved by changing undesirable lifestyle and reducing mental stress.

Adult ; Asthenozoospermia ; etiology ; China ; Chlamydia trachomatis ; isolation & purification ; DNA Fragmentation ; Gardnerella vaginalis ; isolation & purification ; Humans ; Leukocyte Elastase ; analysis ; Male ; Preconception Care ; Semen ; microbiology ; Semen Analysis ; statistics & numerical data ; Sperm Count ; statistics & numerical data ; Spermatozoa ; Ureaplasma urealyticum ; isolation & purification

Objective To study the effect of naringenin(NAR)on myocardial fibrosis in rats with chronic heart failure(CHF)and its mechanism.Methods The rat model of CHF was established and randomly divided into CHF model group(CHF),NAR low dose group(L-NAR),medium dose group(M-NAR)and high dose group(H-NAR),with 10 rats in each group.In addition,sham operation group(Sham)was set up.The cardiac function of rats was detected by ultrasonic electrocardiogram.HE staining and Masson staining were used to observe the pathological changes of myocardium.The content of hydroxyproline(HYP)in myocardium was determined by alkaline hydrolysis method,and the content of collagen was calculated.The mRNA expression levels of activin A(Act A)and follistatin(FS)in myocardium were detected by qRT-PCR.The protein expression levels of Act A,FS,Collagen Ⅰ,Collagen Ⅲ,Smad2,Smad3,p-Smad2 and p-Smad3 were detected by Western blot.Results Compared with Sham group,the arrangement of muscle fibers in CHF group was disordered,cells were swollen,and the degree of fibrosis was higher.The left ventricular end diastolic dimension(LVEDD),left ventricular end systolic dimension(LVESD),collagen content,and the expression levels of Act A,Collagen I,Collagen Ⅲ,p-Smad2/Smad2,and p-Smad3/Smad3 ratios were significantly increased(P<0.05),The left ventricular ejection fraction(LVEF)and FS expression level were significantly decreased(P<0.05).Compared with CHF group,the pathological changes and fibrosis degree of myocardial tissue in M-NAR group and H-NAR group were improved.LVEDD,LVESD,collagen content and the expression levels of Act A,Collagen Ⅰ,Collagen Ⅲ,p-Smad2/Smad2,and p-Smad3/Smad3 ratios were significantly decreased(P<0.05),while LVEF and FS expression levels were significantly increased(P<0.05).Compared with L-NAR group,medium and high-dose NAR intervention was more effective in improving myocardial fibrosis and Act A/FS system disorder in CHF rats(P<0.05).Conclusion NAR can inhibit myocardial fibrosis in CHF rats,and its mechanism may be related to the regulation of Act A/FS system.