Objective To study the impact of gender,gender role and gender traits on depression in adolescents.Methods A sample of 1330 middle school students from seven provinces in China completed Beck Depression Inventory (BDI) and Gender Traits Inventory.Results 27.1 percents of participants displayed the symptoms of depression.The mean score of males of BDI was 10.04 ± 8.38 while that of females was 10.33 ± 8.37,indicating that there was no sex differences in depression of adolescents(P=0.535).The participants could be classified into 4 sex role types:masculine,feminine,androgynous and undifferentiated,and the BDI mean score of each type was 9.51 ± 7.66,12.30 ± 8.81,9.14 ± 8.10,10.72 ± 8.66,and significant differences were found among adolescents with different gender roles (P =0.000).BDI scores of the feminine adolescents were the highest among the four gender roles,which were significantly higher than scores of the masculine and androgynous adolescents (P =0.000).Regression analysis indicated that adolescents with more positive masculine traits tended to be less depressive (t =-4.966,P ＜ 0.01) while adolescents with more negative masculine (t =2.574,P ＜ 0.01) or feminine (t =10.566,P ＜ 0.01)traits tended to be more depressive.Conclusion Gender role rather than gender has greater impacts on adolescent depression,and specifically,positive masculine traits represent protective factors for depression.

Objective To analyse the role of haptoglobin in the immunomodulatory in patients with premature coronary heart disease.Methods Clinical data of 60 premature coronary heart disease patients and 40 healthy people was analysed.The general information and serume haptoglobin,hs-CRP and IL-6 were compared.Results There were no statistically difference between the two groups of the general information such as sex,years,BMI,hypertension and diabetes (P>0.05),excepts the smoking history(27/33 vs 9/31,χ2=3.324,P<0.05).Hp,hs-CRP and IL-6 levels in the observer group were signifi-cantly higher than the control group,the difference was statistically significant (97.76±23.08 mg/L vs 65.81±19.42 mg/L,10.43±3.81 mg/L vs 3.05±0.94 mg/L,16.43±4.59 pg/L vs 4.62±1.83 pg/L,P<0.001).Correlation analysis showed that in the observer group Hp and hs-CRP showed a significant positive correlation (r=0.518,P<0.001),and the same results was found between IL-6 and Hp (r= 0.291,P=0.024).Conclusion Haptoglobin level was significantly in-creased in patients with coronary heart disease,which suggested that haptoglobin played a role in the development of coro-nary heart disease,and its level was correlated with IL-6.

Objective To observe the effect of tai chi chuan on anneal dyspnea and endurance stamina of patients with chronic obstructive pulmonary disease (COPD).Methods 80 COPD patients were randomly divided into control group (n=40) and training group (n=40). The common therapy of two groups was the same; but the training group was added with Chen style tai chi chuan training for 30 minutes one day. At the same time, all patients were evaluated about the dyspnesa exponent before and after 3 months training.Results There were no significant differences in FEV1(%), FEV1/FVC(%),heart rate and breath frequency/minute before and after treatment (P>0.05) between two groups, but in dyspnea exponent, there was a significant difference between two groups (P<0.05).Conclusion Tai chi chuan training can reduce the symptom of COPD patients.

AIM: To study the instant effect of circumstance temperature on mechanical properties of single living intact human red blood cell. METHODS: The shape, size, membrane bending elastic modulus and shear elastic modulus of single living intact red blood cell was determined with non-invasive, in situ, real time by employing a static micro-image analyzing and a dynamic micro-image analyzing system. RESULTS: The contact area and diameter of red blood cells were decreased as the temperature increased from 35 ℃ to 43 ℃. The membrane bending elastic modulus and shear elastic modulus of single living intact red blood cell were the least at physiological temperature 37 ℃. CONCLUSION: Red blood cells are easy to carry out their physiological functions such as carrying oxygen to all of the body with the best shape and mechanical deformation at 37 ℃.

Objective To explore the relationship between viral encephalitis(VE)and Borna disease virus(BDV)infection,and discuss the clinical features of viral encephalitis patients infected by BDV.Methods The p24 gene fragment of BDV in cerebrospinal fluid mononuclear cells(CSFMC)from 32 patients with viral encephaliris and 34 healthy individuals were examined by fluorescence quantitative nested reverse transcriptase polymerase chain reaction(FQ-nRT-PCR),in which, β-actin was used as internal reference. The clinical manifestations of patients with positive BDV p24 were watched. And the gene sequence,homology and amino acid sequence of positive products were analyzed. Results The positive rate(4/32,12.5%)of BDV p24 in CSFMC of patients with viral encephalitis was significantly higher than that of healthy individuals(0/34,0%),P＜0.05,and the numbers of copies of BDV p24 in CSFMC of VE patients were more than 102/μl. Compared with the sequences of the standard strain Ⅴ and the virus strain H1766 of BDV from horse supplied by GenBank,the homology of the gene sequence of positive product of CSFMC was 95.35% and 98.84% with gene mutation in 4 sites(nt1649 T→C, nt1656 G→A,nt1670 C→T, nt1676 C→T). The genetic relationship between the positive product and the virus strain BDV from horse was the nearest. The clinical features of VE patients with positive BDV p24 were mainly by mental and behavior disorders. Conclusion The occurrence of VE patients in the city of Zunyi in Guizhou province may be associated with BDV infection. The clinical features of VE patients with positive BDV p24 were mainly mental and behavior disorders.

Objective To observe the effects of pentabrominated diphenyl ether (BED-99) on the histological structure and function of the thyroid of rats. Methods Forty SPF, SD rats aged 4 weeks, were randomly divided into 4 groups according to the body weight,10 in each group. The rats were treated with BED-99 at the doses of 30 mg/kg,60 mg/kg,120 mg/kg,respectively, through gavage. The rats in the control group were received the equal volume of corn oil. The levels of serum hormone were determined,the change of histopathology,histochemistry and follicular cells ultramicroscopic structure were observed at 15 days of exposure to BED-99. Results Serum levels of thyroxin (FT4),triiodothyronine (FT3),decreased gradually with dose increase at 15 days of exposure to BED-99.However,thyroid stimulating hormone (TSH) levels increased. The thyroid follicular epithelium hyperplasia was aggravated gradually with dose increase. Proliferating cell nuclear antigen (PCNA) positive cells increased constantly with dose increase. The activities of thyroperoxidase (TPO) and succinate dehydrogenase (SDH) of the treated rats increased significantly compared with the controls,and appeared color darkened. The rough endoplasmic reticulum of the thyroid follicular cells changed to saccate under the electron microscope,whereas nucleolus,cell membrane and mitochondria were not injured. Conclusion BDE-99 may damage the histological structure and function of the thyroid, the mechanism may be that BDE-99 down-regulates the thyroglobulin synthesis and then induces thyroxin level decrease which causes an increase of TSH through feedback.

Objective To investigate the infectious features of rubella virus (RV) JR 23 strain in central nervous system (CNS). Methods RV JR 23 strain infected human primary cerebral neural cell culture in vitro and Balb/c mice, which were given dexamethasone and cytoxan before infection, via peritoneal injection. Viral pathogenecity was observed postinfection and RV antigens were detected in human cerebral neural cells by IFA and immunohistochemical method. Cerebral tissues were observed by HE staining and ABC methods postinfection.Results JR 23 strain didn't produce cytopathic effect (CPE). The proliferation of JR 23 strain reached highest titer of 10 3TCID 50 /ml at 72 h postinfection and decreased gradually. RV antigens were positive in cerebral neural cells, especially around the nuclei. Focal cytopathic areas were observed in cerebral cortical area and so did neuron necrosis around by gliacytes formed stellitorsis, neuronophagia and glial nodule. RV antigens could be seen in all cerebral area, but most localized in cortical area. Pathological features were basically the same among the infected groups. The infection rates of de xamethasone, cytoxan group and the group without intervention were 60%、90% and 50%, repectively. Conclusion RV JR 23 strain is not cytocidal to human neural cells and the pathological lesions induced by JR 23 strain in CNS of mice are mainly focal or dotted neuron necrosis.

OBJECTIVE:To set up a HPLC method for the determination of the contents of notoginsenoside R1,ginsenoside Rg1 and Rb1 in Sanqishangyao tablets.METHODS:It was performed on VP-ODS (150mm?4.6mm,5?m),and the mobile phase was acetonitrile-water with gradient elution system(0～20min(20∶80),20～26min(40∶60),26～35min(20∶80)).The flow rate was 1.0mL?min-1 and the column temperature was room temperature.The detection wavelength was 203nm.RESULTS:The liner range of notoginsenoside R1 was 0.261～7.83?g(r=0.999 9)and the average recovery was (101.12?2.03)%(RSD=2.1%).The liner range of ginsenoside Rg1 was 0.602 5～18.075?g(r=0.999 7)and the average recovery rate was (97.22?3.33)%(RSD=1.9%).The liner range of ginsenoside Rb1 was 0.537 5～16.125?g(r=0.999 6)and the average recovery rate was(100.71?2.4)%(RSD=1.6%).CONCLUSION:The method is suitable for the content determination of notoginsenoside R1,ginsenoside Rg1 and Rb1 in Sanqishangyao Tablets.

Objective To investigate the pathological changes of gastric antrum mucosa after Helicobacter pylori eradication.Methods Total 180 cases who suffered from epigastralgia and took the endoscopic examination were randomly divided into two groups,one was Hp eradication group which included 98 cases and given anti-Hp medication treatment,and the other was control group which included 82 cases and given an expectant treatment.At the end of the study,they took reexamination by gastroscope and tests on Hp by Giemsa dyeing & rapid urase detection and on gastric antrum pathological changes by HE dyeing.Results In treatment group,atrophic gastritis as well as intestinal metaplasia decreased significantly after Helicobacter pylori eradication,but in control group,no change of atrophic gastritis was found while intestinal metaplasia aggravated.Conclusion The eradication of Helicobacter pylori is able to decrease atrophic gastritis and intestinal metaplasia.

Humans ; Imaging, Three-Dimensional ; methods ; Movement ; Neoplasms ; radiotherapy ; Patient Compliance ; Radiometry ; Radiotherapy Dosage ; Radiotherapy, Conformal ; methods ; Respiration