Effects of proprioception training combined with core stability training on balance ability of college students / 中国学校卫生

Objective@#To explore the effect of proprioception combined with core stability training on the static balance ability and dynamic balance ability of college students, and to provide an experimental basis for studying body balance ability and preventing sports injuries.@*Methods@#In August 2019, 112 non sports students from Shandong Institute of Physical Education were recruited, and 52 subjects were selected as the intervention group and 60 as the control group by random number table method. The intervention group was given proprioceptive training combined with core stability training, while the control group was given core stability training. The static and dynamic balance abilities of the two groups of subjects before and after training were compared.@*Results@#The static balance ability of the intervention group was higher than that before the intervention ( F =2.17， P <0.05) at the 5th and 11th weeks, which were 18.31% and 47.37% higher, respectively. The ability to stand on one foot with eyes closed at the 11th week in the intervention group was higher than that in the control group at the 11th week( t =2.25， P <0.05). After training, the equilibrioception of the intervention group was improved, increasingly improved in the 11th week. And compared with that in intervention group in the 5th and 11th week, the ability was also higher than the balance ability of the intervention group before the intervention( F =2.37， P <0.01), 12.01% and 12.99% higher, respectively.@*Conclusion@#Proprioception and core stability training can effectively improve the static and dynamic balance ability of college students, and the training effect of proprioceptive training combined with core stability training is better than that of core stability training.

The inhibitory effect of α-lipoic acid on the high salt-induced hypertension rats / 重庆医学

Objective To investigate whether the excessive production of reactive oxygen species (ROS) in the mitochondria of the rostral ventrolateral medulla (RVLM) can inhibit the high salt-induced hypertension response.Methods A total off 32 male rats were divided into two groups:two groups were given normal salt diet (0.3％ NaCl) for 8 weeks (n=16) and high salt diet (8％ NaCl) for 8 weeks (n=16,induced hypertension model) respectively.The two groups were divided into four groups,two groups were given α-lipoic dissolving in 0.9％ normal saline (60 mg/kg),two groups were fed with saline for 9 weeks.There were ffour groups:the experimental group (n=8,the hypertension model sample fed α-lipoic acid),the model group (n=8,the hypertension model sample fed saline),the control group (n=8,normal salt diet sample fed α-lipoic acid) and the blank control group (n=8,normal salt diet sample ffed saline).Monitored the change of the arterial pressure and detected the expression off superoxide by immunofluorescence at the end of the experiment,measured the expression of NAD(P)H NOX2,NOX4 and Cu/Zn-SOD in RVLM by Western blot;determined the expression differences of oxidative stress related substances such as mitochondrial malondialdehyde(MDA)in RVLM by ELISA.Results The mean arterial pressure (MAP) in the experimental group was lower than that in the model group,the difference was statistically significant (P＜0.05);in the experimental group and the model group the intensities of fluorescent-labled dihydroethidium(DHE) were 60.2±3.1,99.1±3.8;the numbers of positive neurons in Cu/Zn-SOD were 20.8±1.1,6.9 ± 1.2;the numbers of NOX2 positive neurons were 12.3 ± 3.5,25.1 ±5.4;the numbers of NOX4 positive neurons were 10.1±2.2,13.3±4.1,the difference was statistically significant (P＜0.05).Western blot showed that the NOX2 levels of the experimental group and the model group were 78.9 ± 2.0,112.7 ± 3.8;the levels of NOX4 were 63.2± 2.1,99.4 ± 1.7.The levels of Cu/Zn-SOD in RVLM of the experimental group and the model group were 19.7 ±1.6,10.3± 1.2,the difference was statistically significant (P＜0.05);the levels of mitochondrial superoxide dismutase (SOD) were (33.1±3.8),(15.2±1.7)U/mg,the difference was statistically significant (P＜0.05).The levels of mitochondrial glutathione (GSH) in the experimental group and the model group were (5.2±0.9),(2.3±0.5)μmol/g;the levels of norepinephrine (NE) were (325.8 ± 7.3),(467.9 ± 6.1) pg/mL,the difference was statistically significant (P＜0.05).Conclusion α-lipoic acid could decrease the expression of NOX2,NOX4 and the bioenergy of mitochondria enzyme,and increase the intracellular antioxidant ability in the RVLM during the development of hypertension to inhibit the oxidative stress response in the development of hypertension.

Efficacy of telbivudine combined with adefovir dipivoxil and pegylated interferon combined with entecavir as antiviral therapy for chronic hepatitis B: a comparative analysis / 临床肝胆病杂志

ObjectiveTo investigate the efficacy of telbivudine combined with adefovir dipivoxil and PEG-IFN-α-2a combined with entecavir as the antiviral therapy for HBeAg-positive patients with chronic hepatitis B (CHB) and a high viral load. MethodsA total of 80 previously untreated HBeAg-positive CHB patients with a high viral load who were treated in The Sixth People′s Hospital of Qingdao from November 2012 to November 2015 were enrolled and randomly divided into two groups. The patients in group A were treated with telbivudine combined with adefovir dipivoxil, and those in group B were treated with PEG-IFN-α-2a combined with entecavir. Biochemical and virologic response rates and seroconversion rate were observed at weeks 12, 24, and 48 of administration. The drug resistance rate and incidence rates of adverse events were observed in both groups. The Chi-square test was applied for comparision of categorical data between the two groups, and the t-test was applied for comparision of continuous data between the two groups. ResultsBiochemical and virologic response rates at weeks 12, 24, and 48 of administration showed no significant differences between the two groups. The seroconversion rates at weeks 12 and 24 of administration showed no significant differences between the two groups, while at week 48 of administration, group B had significantly higher HBeAg clearance rate and seroconversion rate than group A (450% vs 675%， 225% vs 450%，χ2=4.114 3 and 4.528 3, both P＜0.05). Group B had significantly higher incidence rates of adverse events than group A. ConclusionTelbivudine combined with adefovir dipivoxil and PEG-IFN-α-2a combined with entecavir can effectively inhibit the replication of high-load HBV DNA, delay disease progression, and realize HBeAg seroconversion. However, the two regimens have their own advantages and disadvantages and should be selected according to clinical situation.

Expression of chemokine receptors CXCR3 mRNA in peripheral blood mononuclear cells of the patients with rheumatoid arthritis by real-time fluorescence quantitative polymerase chain reaction / 中华风湿病学杂志

Objective To detect the expression of chemokine receptors CXCR3 mRNA in the peripheral blood mononuclear cells (PBNCs) of patients with Rheumatoid Arthritis (RA) and to analyze the relationship between the expression and the disease activity. Methods mRNA was extracted from PBNCs and the expression of CXCR3 mRNA was detected by real-time fluorescence quantitative PCR (RFQ-PCR) in 51 RA patients and 32 controls. T-test, x2-test, ANOVA were used for statistial analysis. Results Comparison between the two groups had shown that the expression levels of CXCR3 mRNA in clinical active RA group were higher than those of the RA patients in remission and healthy controls (P<0.05). The expression levels of CXCR3 mRNA were positively correlated with serum levels of ESR and CRP in clinical active RA group (r=0.824, r=0.765, P<0.05). In addition, RF titer, APF, AKA, and anti-CCP had no significant correlation with the expression levels of CXCR3 mRNA in RA patients (P>0.05). Conclusion RFQ-PCR is a sensitive,reproducible and practical test. The mRNA expressions of CXCR3 are significantly elevated in RA patients,which suggest that CXCR3 may be involved in the pathogenesis of RA. The mRNA expressions of CXCR3 in active RA patients are higher than those of RA patients in remission. These results indicate that CXCR3 may play an important role in the pathogenesis and progression of RA, and CXCR3 may be considered as an indicator for disease activity, therapeutic efficacy and prognosis of RA.

Cloning and characterization of a novel rat gene RSD-7 differentially expressed in testis / 中国医学科学院学报

<p><b>OBJECTIVE</b>To isolate and identify the differentially expressed genes in spermatogenesis for the understanding molecular mechanism of spermatogenesis.</p><p><b>METHODS</b>Screening of the cDNA library, Northern blot, expression and purification in E. coli with GST expression system, immunocytochemical staining of testis sections were used.</p><p><b>RESULTS</b>(1) A cDNA fragment designated as RSD-7 was isolated from rat testis cDNA library. It was 1,238 bp in length, coding a protein of 232 amino acids with the GenBank accession number AF315467. The encoding protein of RSD-7 cDNA had a Ubiquitin-like domain. (2) Northern blot indicated that RSD-7 was uniquely expressed in rat testis, and in the testis RSD-7 emerged on the 30th postnatal day and expressed until 120th postnatal day. (3) Expression and purification of RSD-7 protein in E. coli with GST expression system and were used to obtain anti-RSD-7 antibody. (4) Immunolocalization of RSD-7 in rat testis revealed that it is expressed only in Sertoli cells.</p><p><b>CONCLUSIONS</b>Transcription pattern of RSD-7 and localization of RSD-7 protein in testis have been made, which established the base for the functional study of RSD-7.</p>

An Exploration into Offering Functional Experiment Course in Medical College / 中华医学教育探索杂志

Medical college of Xi`an Jiaotong university offered the functional experiment course in 1997. The courseincludes the basic knowledge of medical scientific research, the experimental design and the implementation of theexperiment, totally 24 hours. The course determines the key role of students in teaching, cultivates their ability to studyindependently and raises their comprehensive ability. The course assessment shows a good result.[

Effects of Yiangxuefukang Granules on The Contractility of Uterine Smooth Muscles / 中成药

Objective: To observe effects of Yiangxuefukang Granules on the contractile function of uterine smooth muscles. Methods: Both the uteri of Sprague Dawley rats within 4～6 days postpartum and the uteri isolated from women of caesarean operation were used to study the effects of Yiangxuefukang Granules on the contractile amplitude, frequency and vitality of uterine smooth muscles. Results: The Granules significantly increased the contractile amplitude, frequency and vitality of both rat uterine smooth muscless in vivo and human uterine strips isolated.Conclusion: The Granules can be used in the treatment of the postpartum hemorrhage and the poor uterine involution caused mainly by lacking in the strength of uterine contraction.

Effect of Dahuang Zhechong Pill on the vascular smooth muscle cell in atherosclerotic rabbits / 中成药

AIM: To observe the anti-atherosclerotic mechanism of Dahuang Zhechong Pill(Radix et Rhizoma Rhei,Eupolyphaga seu steleophaga,Hirudo,Radix Scutellariae,etc) in the aspect of VSMC proliferation and apoptosis,collagen synthesis in the vessel wall. METHODS: The atherosclerotic model was established by hypercholesterol feeding together with immune-injured endothelium in rabbits.The level of hydroxyproline in vessel wall was determined.Histological changes were examined by electronic microscopes.The proliferation of VSMC was determined by immunohistochemistry and apoptosis of VSMC by TUNEL. RESULTS: Dahuang Zhechong Pill improved the histological changes of vessel wall of rabbit with atherosclerosis and reversed vascular remodelling.The level of hydroxyproline in the vessel wall and the number of proliferation of VSMC decreased,and the number of apoptosis of VSMC increased in Dahuang Zhechong Pill-administered groups compared with the model control group. CONCLUSION: Dahuang Zhechong Pill can inhibit the development of atherosclerosis by inhibiting the synthesis of collagen fiber in vessel wall and the proliferation of VSMC as well as inducing the apoptosis of VSMC.

The effect of imidazoline receptor agonist-moxonidine on the His bundle electrogram in vivo / 西安交通大学学报(医学版)

Objective To study the effect of moxonidine (Mox) on the His bundle electrogram (HBE) of normal rabbits. Methods A total of 24 healthy rabbits were randomly divided into four groups: control group, small dose of Mox (0.1 mg?kg -1), medium dose of Mox (0.3 mg?kg -1) and large dose of Mox (0.9 mg?kg -1). The electrode catheter was inserted from the right carotid artery to record the HBE. The HBE and the synchronism surface ECG were recorded before and after intravenous injection. Results In normal rabbits, the R-R interphase, P-R interphase of the ECG and the H-V interphase of the HBE were prolonged in a dose-dependent manner after intravenous injection of Mox. Mox exerted no significant influence on the A-H interphase. Conclusion ① Mox decreases the heart rate of rabbits in a dose-dependent manner in vivo. ② Mox dose-dependently prolongs the P-R interphase of the surface ECG and the H-V interphase of HBE. This indicates that Mox mainly acts on the intraventricular conducting system.

Cellular immune mechanism of anti-tumor efficacy of Shenqi injection in H22 tumor-bearing mice / 西安交通大学学报(医学版)

Objective To investigate the relationship between in vivo anti-tumor efficacy of Shenqi injection and its effect on immunologic function in H22 tumor-bearing model mice,and explore the cellular immunologic mechanism of Shenqi injection in inhibiting tumor growth.Methods Three different doses of Shenqi injection were given to H22 tumor-bearing model mice in treatment groups.The tumor growth inhibitory rate(IR) and the index of phagocytosis of peritoneal macrophage were calculated.MTT assay was used to observe the effect of Shenqi injection on spleen lymphocytes stimulated by ConA in vitro separated from H22 tumor-bearing mice.Murine serum IL-2 and IFN-? were detected by means of ELISA assay.Results IR was significantly reduced in two treatment groups compared with that of the model mice(60.72%,48.65%,P