Objective To investigate mediate role of coping strategy between stressful life events and negative emotions which anxiety and depression are included.Methods Questionnaires of psychosocial stress survey for groups (PSSG),Simple Coping Style Questionnarire(SCSQ),Selfrating Anxiety Scale (SAS) and Selfrating Depression Scale(SDS) were used to examine 1 764 young servicemen.Results Correlation analysis showed that there existed negative correlations between positive coping and stressful life events,passive coping,anxiety,depression(r=-0.080～-0.304,P＜0.05).And correlation analysis also showed there existed positive correlations among the other variables(r=0.230 ～ 0.756,P＜0.05).There existed partly mediating effect of positive coping,passive coping between stressful life events and negative emotions.The standardized total effect of life events to anxiety was 0.302.Mediating effects of positive coping and passive coping were 0.033,0.044.The standardized total effect of life events to depression was 0.230,mediating effects of positive coping and passive coping were 0.051,0.029.Conclusion Coping strategy is an important mediator between stress and negative emotions such as anxiety and depression.

Objective To explore the relationships among college students' trait anger,violent attitude and aggressive behavior.Methods A total of 991 college students were surveyed with the Trait Anger Scale,the Violent Attitude Questionnaire and the Aggression Questionnaire.Results (1)College students' scores on trait anger,violent attitude and aggressive scales were 17.99±3.94,3.52±2.20 and 70.12±14.67,respectively.(2) There were significant correlations among college students' trait anger,violent attitude and aggressive behavior(r=0.172-0.835,P<0.01).(3) Trait anger had a direct impact on aggressive behavior,as well as indirect effects through violent attitude.The direct effect of trait anger on aggressive behavior was 0.53,the indirect effect of violent attitude was 0.13,the total effect was 0.66,and the indirect effect was 20%.(4)The experience of parenting violence moderated the mediating effect of voilent attitude,and violent attitude moderated trait anger and aggression in those who didn't experience parenting violence(β=0.28,P<0.01),while the mediating effect was not significant in those who experienced parenting violence(β=-0.24,P=0.23,SIE=-0.166,P=0.28).Conclusion Violent attitude partially mediates trait anger and aggressive behavior,which is moderated by experienced parenting violence.

OBJECTIVE: To investigate the protective effects of rosiglitazone maleate on renal ischemia-reperfusion injury in mice and its mechanism.METHODS: 30 mice were randomly divided into sham operation group(normal saline),model group(normal saline) and rosiglitazone maleate group(rosiglitazone maleate 5 mg?kg-1?d-1).Three groups received relevant drugs for 10 days.Renal ischemia-reperfusion injury model was induced in model group and rosiglitazone maleate group by clipping the renal pedicle 40 minutes after the last administration.The renal index,the content of blood urea nitrogen(BUN) and creatinine(Cr),the content of malondialdehyde(MDA),the activities of superoxide dismutase(SOD) and glutathione peroxidase(GSH-Px) in renal tissue were detected.Pathological change of renal tissue was observed by HE stain.RESULTS: Compared with model group,the renal index of the mice in rosiglitazone maleate group reduced(P

Objective To investigate the risk factors for mild cognitive impairment (MCI) in elderly people in Beijing.Methods Using multistage cluster random sampling,129 elderly people aged 60-80 years living around Dongzhimen communities were interviewed by mini-mental state examination (MMSE) and National Institute of Neurological and Communicative Diseases and Stroke/ Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) criteria for screening MCI and Alzheimer's disease (AD).Results Thirty-seven cases (28.7%) had amnestic MCI (aMCI),thirty-six cases (27.9%) had AD,and fifty-six cases (43.4%) were with normal cognitive state (NCS).The age was older in aMCI patients or AD patients than in NCS[(67.6±7.5)y vs.(62.5±7.9)y,(67.6±7.5)y vs.(62.5±7.9)y,both P<0.01],Andthe aMCI or AD patients had low level of education (P<0.05).The blood pressure was higher in the patients suffered from aMCI or AD than in people with NCS more or less (P<0.05).The prevalence of aMCI was related to the body mass index (BMI) (P<0.05),while that of AD had no significant relation with BMI (P>0.05).The prevalence of aMCI or AD was not significantly different between male and female or between different birth months.(all P>0.05).Conclusions The prevalence of aMCI increases with age,lower level of education,higher level of blood pressure and BMI,while it has no significant relations with gender or birth month.

Objective To investigate the effects of lovastatin alone or combined with calcitonin on fracture repair in osteoporotic rats. Methods Forty 4-month-old female SD rats were randomized into 5 groups(8 rats in each group):normal fractured group (A), osteoporotic fractured group (B), lovastatin treatment group(C), calcitonin treatment group (D) and lovastatin combined with calcitonin treatment group. All rats except group A received bilateral ovariectomy. The midshaft femur fracture model was established in all rats 8 weeks after operation. The serum level of procollagen amino-terminal propeptide (PINP) was assessed by ELISA. X-ray and bone mineral density detection was used to observe the fracture healing process. The maximal loading of femoral fractures was analyzed by biomechanical method. Results (1) The serum level of PINP was significantly lower in group A than that of other groups. There was a significantly higher level of PINP in group C and group E than that of group B, and the level of PINP was significantly lower in group D than that of group C. (2) The X-ray showed more progressed fracture healing in group A and group E. The accordingly score indicated that there was a markedly higher score in groups A and group E compared to that of other three groups. (3) There was a highest bone mineral density in the full-length and in the middle of femur bone in group A, followed by group E, group D and group C. The lowest bone mineral density was found in group B. (4) The biomechanical test showed that the maximal loading in femur fracture side was significantly higher in group A than that of other four groups, in which it was higher in group E than that of group B. Conclusion The osteoporosis decreased bone mass and delayed fracture healing process in rat model. The treatment of lovastatin combined with calcitonin showed more positive effect on preventing bone loss and promoting fracture repair than lovastatin alone.

Objective To explore the clinical manifestation,imaging features,histopathological classifications and treatment of primary orbital tumors.Methods Twenty-six cases with primary orbital tumors were retrospectively studied.Results All of 26 primary orbital tumor cases received surgical treatment.Sixteen primary orbital tumors cases were male and 10 cases were female.The mean age was 46 years (ranged from 15 to 72).The mean hospital stay was 13 d (ranged from 9 to 21).Among 26 primary orbital tumors cases,21 cases were benign tumors which included 11 cases of cavernous hemangioma,5 cases of inflammatory pseudotumor,3 cases of dermoid cyst,2 cases of venous angioma.Five cases were malignant tumors which included 4 cases of adenoid cystic carcinoma and 1 case of rhabdomyosarcoma.After operation,visual acuity improved in 9 cases,unchanged in 11 cases,decreased in 6 cases.The patients were followed up for 18-48 months (mean,25 months).There were 4 cases of malignant tumors recurrence after operation and received radical operation.While 2 patients were lost,the other 24 patients survived with tumor-free.Conclusions Surgical excision is the main and effective treatment for primary orbital tumors.To be very familiar with the imaging characteristics and local anatomy is the key for operation.Individualized treatment plan should be chosen based on clinical manifestation,imaging features and histopathological classifications.

Chinchilla has been successfully used as an animal model in the study of auditory system, microorgan-ism and parasitic infection, because of its unique biological features, and it can be further developed for the research of se-nile diseases, metabolic diseases, etc.This paper will introduce the related biological characteristics of chinchilla, and briefly reviewed the progress of its application in medical research.

This paper discusses the definition , classification, selection, monitoring and evaluation of animal biosafety isolation device .Evaluation order of animal biosafety isolation device follows animal survival needs -biosafety needs-animal welfare requirements .

Objective To screen the effective silencing targets of P21 gene at the cellular level in rhesus monkey . Methods To detect the expression of P21 gene in COS-7 cells ( derived from the kidney of African green monkey , Cerco-pithecus aethiops).Four small hairpin RNA (shRNA) sequences targeting rhesus monkey P21 gene were designed and in-serted into lentivirus-based gene silencing constructs FUGW-TDT.The vectors were transfected into COS-7 cells respective-ly.The suppression of P21 mRNA was detected by real-time PCR, and the expression of P21 protein was detected by West-ern blot assay .Results Four gene-silencing sequences were screened that lied in 541-561 bp, 542-562 bp, 215-239 bp, and 624-648 bp of the rhesus monkey P21 mRNA.Their silencing rate was (91.82 ±3.21)%, (82.47 ±2.48)%, (81.31 ±2.69 )% and ( 87.35 ±4.59 )%, and the protein expression was ( 11.97 ±0.70 )%, ( 20.22 ±0.65 )%, ( 23.21 ± 0.63)%and (14.42 ±0.86)%, respectively.Conclusions Four effective silencing target sequences are screened at cel-lular level , which can be used in gene silencing research of rhesus monkeys .

ObjectiveTo investigate the developmental status and their relationship of self-supporting personality and career maturity of medical students.Methods450 medical students were surveyed by self-supporting personality scale and career maturity questionnaire.Descriptive statistical analysis,t-test,correlation analysis and regression analysis were used to do data analysis.Results ( 1 ) Most dimensions of self-supporting personality such as personal initiative,interpersonal initiative,interpersonal flexibility and personal responsibility were positively related to the career maturity ( r=0.53,P＜0.01 ; r=0.49,P＜0.01; r=0.46,P＜0.01 ; r=0.45,P＜ 0.01 ).(2)Career maturity of medical students can be positively predicted by several dimensions of self-supporting personality ( R2 =0.49,F=60.10,P＜ 0.01 ).ConclusionThe career maturity of medical students is closely associated with their self-supporting personality.