Objective To explore the radiation of the interventional diagnosis and treatment devices in some hospital of Hubei province to the circumstances and staffs.Methods The radiation shielding in the radiological workplace of the hospital was analyzed,and an evaluation model system was established based on dose equivalent level so as to estimate the shielding thickness of DSA machine room and the exposure dose to the staff.Results The designed shielding thickness of DSA machine room roof was tower than the theoretical one,while the designed thicknesses of other shields were higher than the theoretical ones,and the theoretical values of the east wall and roof in the DSA machine room were all higher than the limits of the national standards.The exposure doses to different parts and annual effective dose were all lower than the national limits.Conclusion The allocation of DSA machine room has to be optimized,and the staff gains satisfactory protection against radiation.

Objective To observe the effects of kidney aquaporin-2 (AQP2) expression in Lung-Qi deficiency model rats and provide experimental evidence for the traditional Chinese medical theory that the kidney is related with the lung in charge of regulating the water passage. Method Twenty healthy rats were divided into the model group and the control group. The method of immunohistochemistry and Western blot was used to determine the expression of AQP2 in kidney. RT-PCR was applied to analyze the expression of AQP2 mRNA in lung and kidney tissues. Result The expression of AQP2 and AQP2 mRNA in kidney in model group was higher than in the control group. Conclusion The expression of AQP2 in kidney was higher in Lung-Qi deficiency model rats. One of the substance basis of "lung in charge of regulating the water passage" may be related to the change of AQP2 expression in the kidney tissues.

Transplantation of engineering cartilage is a better choice for the treatment of articular cartilage lesions.Constructing engineering cartilage needs seeded cells and scaffold materials.The property of scaffold materials has a great influence on the biomechanical features of engineering cartilage.A variety of materials can be used for constructing engineering cartilaginous framework.Exploring the research development of scaffold materials and comparing the effects of their clinical applications is of great significance for further improvement of biomechanical characteristics of the engineering cartilage.

Anti-Inflammatory Agents, Non-Steroidal ; pharmacology ; therapeutic use ; Apoptosis ; drug effects ; Arthritis, Rheumatoid ; drug therapy ; immunology ; B-Lymphocytes ; drug effects ; Cytokines ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Immunosuppressive Agents ; pharmacology ; therapeutic use ; Phytotherapy ; T-Lymphocytes ; drug effects ; Tripterygium ; chemistry

Objective To evaluate the left ventricular diastolic dysfunction by tissue Doppler imaging (TDI)in a suprarenal abdominal aortic coarctation model of Lewis rats. Methods Thirty male Lewis rats at age of 8 weeks were used. Myocardial hypertrophy model was obtained by suprarenal abdominal aorta banding with ligation. Mitral annular velocity measurement by TDI and regular two-dimensional echocardiography with M mode were examined at baseline and at 10-,20-,30-and 40-day post banding.Results Compared with baseline,the left ventricular end diastolic and end systolic wall thickness and ventricular dimension were progressively increased,while ejection fraction(EF)and fraction shortening(FS)were decreased(P＜0.0 1).The left ventricle demonstrated centrifugal myocardial hypertrophy.Peak myocardial systolic velocity(Sa)at the mitral annulus did not change significantly throughout this study and there was no significant correlation with EF(r=0.216,P=0.071),and peak myocardial early diastolic (Ea),late diastolic(Aa)at the mitral annulus and Ea/Aa indices also were not stable after aortic banding and there were no significant difference in repeated measures at different time(P＞0.05).But the E/Ea wasincreased and the index had a statistically significant difference(P＜0.001).Conclusions The left ventricleshowed centrifugal myocardial hypertrophy in Lewis rats with abdominal aortic banding.E/Ea radio was a sensitive and stable index to evaluate left ventricular diastolic dysfunction.

ObjectiveTo investigate the effect of vascular endothelial growth factor (VEGF) on collagen Ⅱ expression in rat articular chondrocytes in vitro.MethodsChondrocytes were isolated and cultured.Then rats were divided into 4 groups:group A(control):without any intervention; group B:10 ng/ml VEGF was added; group C:10 ng/ml IL-1β was added; group D:10 ng/ml VEGF and 10 ng/ml IL-1β were added.Messenger RNA (mRNA) expression of collagen Ⅱ was detected by using real time polymerase chain reaction (real time PCR),and the protein expression level of collagen Ⅱ was detected by Western blotting.Comparisons between groups were performed by one-way ANOVA.ResultsThe collagen Ⅱ mRNA expression levels of group B (0.78+0.07),group C (0.67+0.06) and group D (0.57+0.04) were significantly lower than those of the group A (1.00±0.08),and there was significant difference between B and D,C and D.Compared with group A(0.95+0.21),the expression of collagen Ⅱ protein in group B(0.71+0.14),group C(0.60±0.11) and group D(0.31 +0.09) was significantly suppressed.The expression of collagen Ⅱ protein in group D was significantly lower than those of group B and C.ConclusionVEGF can significantly suppress the expression of collagen II in rat articular chondrocytes.VEGF may play an important role in the development of osteoarthritis.

Objective: To explore the effect of low-level laser irradiation (LLLI) preconditioning on milieu of infarcted myocardium in experimental rats.
Methods: The myocardial infarction (MI) model was established by left anterior descending (LAD) artery ligation in female rats. 3 weeks later, the qualified MI rats were randomly divided for 3 groups: ① LLLI preconditioning group, the rats received thoracotomy for LLLI by a 635nm, 5mW diode laser with the energy density of 0.96 J/cm2 for 150 seconds, n=26. ② Control group, the rats received thoracotomy for daylight irradiation, n=27. ③ Sham operation group, the rats received thoracotomy without LAD ligation, n=24. The Expressions of myocardial vascular endothelial growth factor (VEGF), glucose-regulated protein 78 (GRP78), superoxide dismutase (SOD) and malondialdehyde (MDA) were evaluate by real time-PCR, Western blot analysis and other relevant laboratory test at 1 hour, 1 day and 1 week after treatment. The myocardial cell apoptosis was examined by TUNEL staining, and left ventricular function was detected by echocardiography.
Results: LLLI preconditioning obviously increased the myocardial VEGF, GRP78 expression and SOD activity, decreased MDA production; while it could not really improve the myocardial cell apoptosis at peri-infarcted area and left ventricular function in experimental rats.
Conclusion: LLLI preconditioning may improve the milieu of infarcted myocardium via decreasing the oxidative stress in experimental rats.

Aim To investigate the effects of Ang Ⅱ receptor antagonist irbesartan on the expressions of connective tissue growth factor(CTGF) and membrane-type 1 matrix metalloproteinase(MT1-MMP) in high glucose-cultured rat glomerular mesangial cells(GMCs).Methods High concentration glucose and irbesartan were used to stimulate the cultured rat GMCs in vitro.The mRNA and protein expressions of CTGF and MT1-MMP were detected with semi-quantitative RT-PCR and Western blot.The secreted collagen Ⅳ in the supernatants of the GMCs was detected by enzyme-linked immunoadsorbent assay(ELISA).Results Compared with control group,the expressions of CTGF were continuously increased in GMCs under high concentration glucose medium;otherwise the mRNA and protein levels of MT1-MMP in GMCs were decreased in a time-dependent manner at the same time.These changes were accompanied by increased secretion of collagen Ⅳ.Irbesartan could inhibit those changes induced by high glucose.Conclusions High glucosecould induce the expression of CTGF and inhibit the expression of MT1-MMP in GMCs.Irbesartan could inhibit the secretion of ECM in GMCs under high concentration glucose medium,partly by regulating the expressions of CTGF and MT1-MMP.

Objective The purpose of the present study is to illustrate the effect of olfactory ensheathing cells(OECs) on the survival and neurite outgrowth of GABAergic neurons in vitro. Methods OECs were dissociated from olfactory bulb and neurons from spinal cord of E12 mouse. On the sixth day in vitro,the Millipore cultue blank with OECs was transferred to the neuron culture mediam and continue the co-culture for another 6 days.The cultured neurons were stained with anti-GABA antibody.The neurite of neurons was observed with an image system.The number of GABAergic positive neurons was counted under the microscope. Result The number of GABAergic neurons was 39^7?6^3 in co-culture groups,whereas the number of GABAergic neurons represented only 27^6?2^7 in control groups(CG),(P

Objective To explore the relationship between big-five personality,and public mood of volunteers,and to find out the moderator effect of justice sensitivity.Methods A total of 1 022 volunteers were investigated.The Big-Five Inventory (BFI),Public Mood Scale (PMS),Justice Sensitivity Inventory (JSI) were applied to all subjects.Results The average score was (19.77±4.49) for extraversion,(26.69± 4.13) for agreeableness,(23.33±5.37) for conscientiousness,(12.49±4.91) for neuroticism,(24.95±5.44)for openness,(8.78±3.23) for positive public mood,(3.46±3.06) for negative public mood and correlated with (26.85± 10.55) for observer sensitivity.The extraversion,agreeableness,conscientiousness and openness were correlated with positive public mood(β=0.31,P＜0.01;β=0.25,P＜0.01;β=0.29,P＜0.01;β=0.26,P＜0.0 1),and negatively correlated with public mood (β=-0.14,P＜0.01;β=-0.29,P＜0.01;β=-0.20,P＜0.01;β=-0.08,P＜0.01).Neuroticism was negatively correlated with positive public mood (β=-0.27,P＜0.01),and positively correlated with negative public mood (β=0.31,P＜0.01).The interaction effect of agreeableness and observer sensitivity negatively correlated with positive public mood,negative public mood (β=-0.09,P＜0.01;β=-0.07,P＜0.05).The interaction effect of neuroticism and observer sensitivity was positively correlated with positive public mood (β=0.08,P＜0.01).Conclusion Observer sensitivity plays a regulative role between big-five personality and mental health,and can slow the negative impact of low agreeableness to positive public mood,strengthen the impact of low agreeableness to negative public mood,and slow the negative impact of high neuroticism to positive public mood.