Objective:Toexplore the effectofinsulin(INS) administration on the expression of Bcl-2 protein and the apoptosis of corneal histiocytes following rabbit model of corneal alkali burn.Methods:to establishⅡdegree rabbit model of corneal alkali burn,and respectively to inject normal saline(B group),INS(C group)in the subconjunction each day,and the normal rabbit eyes as controls(A group).The different time after operation the corneal samples were remove and fixed.the apoptosis of corneal histiocytes were detected by light microscope,electron microscope and transferase-mediated dUTP-digoxigenin nick and labeling assay(TUNEL),the expression and alteration of Bcl-2 protein using immunohistochemisty.Results:The TUNEL positive cells were present slightly in the epithelium of normal comea and not present onstroma and endothelium.Bcl-2 were expressed mainly on the normal corneal epithelium,a lower number of Bcl-2 expression on stroma and endothelium.The TUNEL positive cells of group C was stgnificantly lower than that(P

Objective To optimize the extraction of volatile oil from Qingjie Granules and process of inclusion compound of beta-cyclodextrin. Methods Water Distillation was used for extraction. Extraction time, grinding degree, and the amount of water were set as inspection factors, and volatile oil volume was set as the evaluation index to inspect extraction process of volatile oil from Qingjie Granules. With inclusion rate as the evaluation index, the single factor test and the Box-Behnken combined with the response surface method were used to choose the optimum inclusion process. Results The optimum extraction process for Schizonepetae Herba, Saposhnikoviae Radix and Forsythiae Fructus coarse powder should be with 10 times amount of water, extracting 3 h. Inclusion method should be saturated water solution method, and the inclusion process of volatile oil as feed and beta-cyclodextrin inclusion ratio was 1:12; the temperature was 40 ℃; inclusion time was 3.5 h. By means of TLC, UV and IR spectra, the formation of the inclusion compound of volatile oil in clear solution particles was preliminarily proved. Conclusion The optimum extraction and inclusion process of volatile oil from Qingjie Granules are stable and feasible, which can be used in industrial production.

HIV Infections ; virology ; HIV-1 ; physiology ; Virus Replication ; physiology

Objective To investigate human immunodeficiency virus type 1 (HIV 1)specific CD8'T cell responses and related human leukocyte antigenⅠ(HLA-I)restriction sites.Methods Four Epstein-Barr virus (EBV)strains-transformed B-lymphoblastoid cell lines (BLCL)from periph eral blood monocytes (PBMC)of 4 healthy individuals were established.Using synthesized peptides in HIV-1 Gag,Vif and Nef regions as epitopes and using BLCL as antigen presenting cells (APC), the frequency of interferon-7(IFN-?)secreting cells in CD8 T cells from a HIV-infected long term nonprogressor by enzyme-linked immunospot (ELISPOT)assay in vitro were assessed.Moreover, matching analysis of HI.A-Ⅰrestriction sites were performed.Results HIV-1 epitopes were presen ted restrictively by HLA-Ⅰmolecules in specific CD8 T cell responses,and this antigen presenting had high specificity.HLA-Ⅰrestriction sitesA03,A26,C04andC08 contributed to presentepitopes in HIV-1 C-ag region,A03 and C08 to HIV-1 Nef as well.Conclusion HLA-Ⅰrestriction sites may include A03,A26,C04 and C08 in HIV-1 Gag region,and A03,C08 in Nef region.

The neurosurgery clinical practice is difficult and important for most undergraduate. The reasons come not only from the development of neurosurgical science,but from shortage of contents in basic peviod,so in clinical education the re-teaching of basic neurosurgical knowledge is important. Teachers should make full use of clinical resources to fulfill this teaching aim and the emphasis should be neuroanatomy and neurophysiology.

Objective To investigate the condition of inflammation and prethrombotic state (PTS) of the aged patients with coronary heart disease(CHD) complicated with esstential hypertension(EH) and type 2 diabetes mellitns(T2DM). Methods The levds of fasting plasma hs-CRP,D-D and VWF were all measured in 86 CHD patients with EH,84 patients with T2DM,80 patients with EH and T2DM,91 CHD patients and 79 normal cases. Results Compared with normal group,diseases groups had significantly higher hs-CRP,D-D,and VWF,but compared with CHD with EH and T2DM group,other diseases groups had lower hs-CRP,D-D and VWF(P <0.05) ;The concentration of serum hs-CRP was positively correlated with D-D and VWF in CHD group (P < 0. 05). Conclusion The inflammation and hypercoagulable state is more significant in CHD patients with EH and T2DM,thns the levels of plasma hs-CRP,D-D and VWF play an important role in the treatment.

Objective To analyze the levels of high density lipoprotein ( HDL) and low density lipoprotein ( LDL) among the staff in a college .Methods Fasting serum samples were collected from 2 234 paticipants .The lev-els of HDL and LDL in different sex and ages were estimated .Results The average value and abnormal rate of LDL in males were 3.20mmol/L and 49.1%,respectively.The average value of LDL in males was higher than normal val-ue.The average value and abnormal rate of LDL in females were 3.03mmol/L and 42.3%,respectively.The value of LDL in females who less than 54 years old was lower than that in males of the same age ( t=5.33,10.56,all P<0.01).Conclusion The abnormal rate of LDL had significant increase and the level in males was higher than that in females.The health education is necessary to prevent and control the abnormal level of LDL .

The requirements for library-provided knowledge service in training of doctorial students were studied according to the analysis of problems in trainingof doctorial students .Theinformation support platform for innova-tive training of doctorial students was constructed by incorporating knowledge service intothe training of doctorial students from the aspects of topic selection, project establishment, scientific research,project completion and choosing excellent doctorial students in order to improve their information awareness and innovative ability.

Objective To understand the current status of students' self-efficacy and sense of life meaning in medical college students, and explore the relationship between them, then give advice to improve the students' general self-efficacy and the sense of life meaning.Methods A random sampling method was used to select 386 undergraduates in a medical college from freshman to senior.The purpose in life test (PIL) revised by He Jiying (1994) and general self efficacy scale (GSES) revised by Wang Caikang (2001) were used in this research.Data were analyzed by SPSS 18.0 software, and the data were analyzed by t test, x2 test, Spearman correlation analysis.Inspection level of alpha=0.01 (double side).Results The score of GSES was (2.62 ± 0.40), and the score of PIL was (74.06 ± 11.09);t test showed that the PIL score of students with higher GSES score was higher than the PIL score of students with lower GSES score (t=5.054, P=0.000);The correlation analysis showed that GSES score was positively correlated with PIL score (r=0.283, P=0.000).Conclusion The general self-efficacy and sense of life meaning of medical college students are in the medium level, and the positive correlation exists between the two.A series of measures should be adopted to strengthen the students' general efficacy, so as to improve their sense of life.

Objective To discuss the relevance between the serum prostate specific antigen (PSA) level and the prostatic cancer biopsy detection rate after tamsulosin treatment for patients with lower urinary tract symptoms and elevated PSA level.Methods 168 patients with lower urinary tract symptoms and elevated PSA level were divided into two groups according to the serum PSA level change after tamsulosin treatment:in the first group,serum PSA level decreased slightly (PSA≥4.0 ng/ml and PSA decrease＜20％);in the second group,serum PSA level decreased obviously (PSA＜4.0 ng/ml or PSA decrease≥20％).Tamsulosin treatment was given in 0.2 mg/d for two months.Prostate gland aspiration biopsy was performed at the end of tamsulosin treatment.Result For the 68 patients of the first group,after tamsulosin treatment,the tPSA level increased from (8.11 ±2.09)ng/ml to (9.05±3.13)ng/ml,in which 38 patients (55.88％,38/68) were confirmed as the prostatic cancer by pathology.For the 100 patients of the second group,after tamsulosin treatment,the tPSA level decreased from(7.80±3.79)ng/ml to (5.19±2.32)ng/ml,in which 6 patients (6％,6/100) was confirmed as the prostatic cancer by pathology.There was significant statistical differences of prostate aspiration biopsy detection rate between the two groups(x2=23.53,P＜0.05).For patients with lower urinary tract symptoms who received tamsulosin treatment,the sensibility of PSA increased to 86.4％,specificity increased to 75.8％,the rate of avoiding aspiration was 55.9％,and the rate of correct diagnosis was 78.5％.Conclusion Tamsulosin treatment can increase the prostatic cancer diagnostic positive rate and decrease the aspiration rate in patients with lower urinary tract symptoms and elevated serum PSA level in a certain extent.