According to the epidemic situation of depression of college students, pathogenesis and intervention measures were analyzed by literature method in this paper, focusing on exploring the principles of exercise intervention in college sports-related depression, the benefits of exercise intensity and precautions. The purpose was to provide a way for college students' reasonable intervention, as well as provide a reference for further prevention treatment of depression of college students.

Objective To explore the diagnostic value of chest X-ray in neonatal respiratory distress syndrome.Methods 87 children with NRDS were selected.Then bedside radiography was conducted with the Philip Pracelx100 mobile X-ray machine,and the children with confirmed NRDS were recorded,and the children screening by chest X-ray review were analyzed.Referenced the NRDS image diagnostic criteria,the disease grading was carried out according to the lung field light transmission reduction and air bronchogram extent.Results 20 cases in the first grade,35 cases in the second grade,28 cases in the third grade,4 cases in the fourth grade.Limitations of miliary shadows in 15 cases ;60 cases of impaired lung field transmittance,51 patients presented with ground-glass change and air bronchogram ;4 cases in “ white lung”.Conclusion Chest X-ray for NRDS had important value of diagnostic,differential diagnostic and prognosis.

Objective To investigate the effect of Calf Spleen Extractive Injection(CSEI) on immune function of immunocompromised mice. Methods BALB/C mice were divided into normal group (n=20), model group (n=20) and positive control group (n=20), CSEI high dose group (1.20 mL/kg, n=20), middle dose group (0.60 mL/kg, n=20) and low-dose group (0.30 mL/kg, n=20). Besides the normal group, mice in other groups were intraperitoneal injected cyclophosphamide at dose of 80 mg/kg for three consecutive days to induce immunocompromised model. Continuous dosing after 10 days to viscera index, index, natural killer cells (natural killer cell, NK) kill rate, the number of peripheral blood leukocytes (white blood cell, the WBC), lymphocyte count (lymphocytes, LYM) and serum against sheep red blood cells (the Sheep Red blood cell, SRBC) IgG levels as examining index, verify the CSEI effect on the regulation of immune function was low immune function in mice. Results Compared with model group, CSEI groups of high middle and low dose had improved viscera index, phagocytic coefficient, NK cell killing activity, serum specific antibody level, peripheral WBC count and lymphocyte count(P<0.05). Conclusion CSEI has possess immunomodulatory effects on the immunocompromised mice.

This article applies documentary,expert interview, questionnaire and other methods to study the physical education teaching of foreign students in Chongqing, and explores the construction of P.E features teaching content teaching to foreign students in medical colleges.

Objective To study the proper method of hamotasis by compression after femoral artery puncture for hemodialysis patients, and then decline the incidence rate of complication. Methods There were 107 hemodialysis patients in the observation group and 106 patients were in the control group. The method of using hard board paper press the point of puncture was adopted in the observation group, the traditional method was used in the control group. Compare the incidence rate of complication and the braking time after the puncture in the two groups. Results The incidence rate of complication in the control group was significant higher than that of in the observation group, P

Objective To investigate the expression of cholecystokinin receptor B(CCK-BR)in a variety of human tumor tissues and cells.Methods RT-PCR and Western Blot were used to detect the expression of CCK-BR mRNA and protein in human gastric cancer AGS and SGC-7901cells,human hepatoma cancer HepG-2 cells,human neuroblastoma SH-SY5Y cells and human lung canc-er A549 and NCI-H446 cells,human prostate cancer DU145 cells,human bladder cancer T24 cells.CCK-BR expression was detected in the clinical cancer tissues including the stomach,breast,cervical,bladder,lung and liver and AGS and SGC-7901 cells by immuno-histochemical and immunocytochemical methods.Results CCK-BR mRNA and protein were express in the cytoplasm and cell mem-brane of the above 8 cell lines.Positive expression of CCK-BR was discovered in the above cancer tissues.Conclusion CCK-BR are expressed in a variety of human tumor tissues and cells.

Purpose To explore the ultrasonic features of tibial nerve (TN) in tarsal tunnel of type 2 diabetes mellitus patients with diabetic peripheral neuropathy (DPN), and to provide the basis for assessment and treatment. Materials and Methods Fifty-four patients with type 2 diabetes mellitus were divided into the DPN group including 31 patients with diabetic periphreal neuropathy and the non-DPN group including 23 patients without diabetic periphreal neuropathy, 22 cases of non diabetic patients were also enrolled as the control group, all the subjects underwent medial tibial nerve ultrasound examination, and the ultrasonic features of tibial nerve (including morphological parameters:left-right diameter, anterior-posterior diameter, thickness sectional area and color Doppler lfow signals) were compared. Results Left-right diameter and anterior-posterior diameter of DPN group were larger than those of non-DPN group and the control group (P<0.01). Ultrasonic features of tibial nerve of DPN group included nerve bundle hypoechoic, vaguedscreen clothstructure, thickening and fuzzy of neural membrane, and the unclear boundaries to adjacent tissue. There was no statistically signiifcant difference in color Doppler signal of TN (P>0.05) among the DPN group, non-DPN group and the control group. Conclusion There are some characteristics features of tibial nerve in tarsal tunnel of type 2 diabetes mellitus patients with DPN, ultrasound can be used to evaluate the morphology of TN in type 2 diabetes mellitus patients with DPN and to provide morphological basis for evaluation and treatment selection.

QRS wave duration is a main method of deciding cardiac asynchrony in patients with Cardiac resynchronization therapy(CRT).But cardiac mechanical dyssynchrony was not always consistent with electrical dyssynchrony.A few patients with widened QRS wave duration had not the cardiac mechanical asynchrony,while some patients with normal QRS wave duration had cardiac mechanical asynchrony.If the cardiac mechanical dyssynchrony was determined,it would be possible to reduce the non-response of CRT.We review the role of QRS duration to predicting the prognosis of CRT and debate the effect of QRS duration to CRT.

There is another factor involving in endothelium dependent relaxation besides NO, which is independent of cGMP, EDHF. Its hyperpolarization mechanism may be related to the open of calcium dependent K + channels(K + Ca). NO, PGI 2,H 2O 2 and cytochrome P450 derived metabolite of arachidonic acid are all the candidates of EDHF. In the normal blood vessels, the influence of EDHF on endothelium dependent relaxation is little. But in some diseases, when the production and effect of NO is disturbed ,the mechanism of EDHF may play a specially important role.

The functions of vascular endothelial cells (VEC) are closely related with the etiology of cardiovascular diseases. The present paper reviews the bioactive substances secreted from endothelial cells and their regulatory effects on the tone of blood vessel wall, on the functions of platelet adhesion and aggregation, on the hemostatic and fibrinolytic systems.