Objective:To investigate the expression of NKG2D in peripheral blood of patients with ovarian benign or malignant tumors, and the expression of the human MHC class Ⅰ chain-related gene A(MICA) on the correspondent tumor tissues. To analyze and discuss the function of NKG2D in anti-ovarian cancer mechanism and its relation with immune escaping of cancer.Methods:Flow cytometry analysis was used to detect NKG2D in the peripheral blood of 42 ovarian carcinoma patients, 23 ovarian tumor patients and 20 health persons. The expressions of MICA in part of the correspondent tissues were examined by means of reverse transcription-polymerase chain reaction (RT-PCR).Results:The expression of NKG2D were (94 23?6 02)%?(98 70?0 98)%?(98 61?1 59)% respectively, compared with the other two groups, the NKG2D expression in malignant group was significantly low; The rate of MICA mRNA expression in ovarian carcinomas was significantly higher than that in benign and normal tissues. No evident relation was found between the expression of MICA mRNA and the clinical factors.Conclusion:The activity of NK cell and the anti-cancer cellular immunity level reduce in patients with ovarian cancer; The decrease of the receptor NKG2D is a reason for the descend of the activity of NK cells; MICA mRNA expression is relative to malignant transformation; the immune-escape of ovarian cancer probably is relative to the down-regulation of NKG2D and the up-regulation of its ligand MICA.

@@

Objective:This study aimed to investigate the associations between single-nucleotide polymorphism (SNP) of IGF-1 and IGFBP-3 gene and risk of non-smoking female lung cancer in Chinese population. Methods:Genotyping was performed using the TaqMan method in 287 histologically confirmed non-smoking female lung cancer cases and 281 healthy controls. Results:The geno-type distributions of IGF-1 polymorphisms were significantly different between cases and controls (P<0.001). Analysis of multivariate logistic regression showed that the carriers of the CC genotype exhibited a significantly decreased risk of lung cancer in non-smoking female (adjusted OR=0.28, 95%CI:0.15-0.54). IGF-1 rs1520220 GG genotype may reduce the risk of advanced lung cancer incidence in nonsmoking female (adjusted OR=0.30, 95%CI:0.09-0.96). Log-rank test and Cox regression analyses revealed that variant geno-types of IGF-1 rs2946834 CT/TT had a significantly decreased lung cancer mortality risk compared with the homozygote CC in≥60 age group or patients with a lung tumor>3 cm. Conclusion:The IGF-1 polymorphism was associated with the risk of lung cancer and prognosis among non-smoking female. More rigorous laboratory studies of large sample population and functional studies are warrant-ed to confirm our findings.

The concept of humanistic education is based on the concern of human beings and their abilities of development. Thus,it is an educational concept to optimize the teaching modules.It stresses the point that education must regard the develop- ment of human beings as the main line and human beings should be emphasized in education from the very beginning to the end. Case-Teaching Method which takes the students as the main part fully manifests the concept of humanistic education,in which all teaching activities and the processes closely revolve the students in order to train them to carry on their studies and to solve the problems independently.

Objective:To study the cooperated effect of Human Embryonic Lung Fibroblast(HELF) feeder layer and LIF in the culture of human Embryonic Stem(hES) cells and establish the method of identifying hES cells from Primordial Germ Cells(PGCs).Methods:Embryonic lungs were mechanically disaggregated,then cultured to establish HELF feeder layer.Gonadal ridges and mesenteries of embryos were mechanically disaggeregated,then cultured and passaged in vitro.Comparing the growth characters of hES cells in different conditions.To identify hES cells through their biological characteristics.Results:The coactions of HELF feeder layer and LIF play an important role in proliferation and undifferentiation of hES cells in vitro.High levels of AKP and telomerase activity are associated with hES cells. The cultrued cells have been continuously passaged for more than two months and found to be karyotypically normal and stable.When differentiating,they form embryoid bodies(EBs).Conclusion:To avoid indection of the heterogeneous protein,HELF feeder layer, in the presence of LIF,can be used in culture of hES cells;hES cells from PGCs can be identified through their biological characteristic. [

Objective To analyze the distribution and evolution of the risk factors for coronary heart disease (CHD) in middle-aging males, and provide the evidence for the prevention and treatment of male patients with CHD. Methods 1639 male people over 45 years old were enrolled in the study. They were divided into non- senile group (45-59 years old) and senile group (60-93 years old).The subjects over 60 years old were further divided into three groups:60-69 years old group, 70-79 years old group, 80-93 years old group. The interrelation between the risk factors of CHD and aging was analyzed. Results The prevalence rates of drinking, smoking, diastolic hypertension and low HDL-C in non-senile group were much higher than those in senile group (x2=28.80,18.35,15.72,17.84,P<0.01). In contrast, the prevalence rates of overweight, systolic hypertension, fasting hyperglycemia,postprandial hyperglycemia in senile group were significantly higher than those in non senile group. The prevalence rates of high triglyceride in non- senile group and senile group were 18.0% and 16.2% respectively(P>0.05). The prevalence rates of high cholesterol in non- senile group and senile group were 36.9% and 31.5% respectively(P>0.05). There was a significant decrease in the prevalence rates of overweight, postprandial hyperglycemia (P<0.05) and drinking,smoking, diastolic hypertension, high triglyeeride (P<0.01) in over 70-year+old males. And the prevalence rates of overweight, postprandial hyperglycemia, high triglyceride of over 80-year-old males were higher than those of over 70-year-old males (x2=10.05,4.16,5.97,P＜0.01). However,the prevalence rates of systolic hypertension of over 80-year-old males were lower than those of over 70-year-old males (X2=21.25,P＜0.01). There was no significant change in other risk factors of CHD at different ages of senile group. Conclusions For non-senile males, the important measures to treat the risk factors of CHD should include stopping smoking, restricting alcohol, eating low fat diet, changing bad life habits, controlling diastolic hypertension and modifying lipid. In contrast, for senile males, more attention should he paid to limiting total energy intake, increasing sports, losing weight, controlling systolic hypertension, hyperglycemia and modifying lipid.

Objective To explore the expression and significance of chemokine CXC reeeptor (CXCR)3 and CXCR4 and their ligands(CXCL)at the early pregnancy decidua and villi.Methods Decidual mononuclear cells were isolated from the normal decidua of 5-8 weeks pregnant women by lymphocyte separation medium in vitro.CD56+natural killer(NK)cells were purified by dynabeads cell sorter kiL Purity and phenotype of CD56+decidua NK cells were analyzed by fluorescence-activated eell sorter (FACS).Gene expression of CXCR3 and CXCR4 in decidua NK cells and CXCL9,CXCL10 and CXCL12 in early pregnancy decidua and villi was assessed bv RT.PCIZ Protein expression of CXCL9,CXCL10 in normal endometrium and early pregnancy decidua was characterized and quantified by streptavidin-biotin pemxidase chain reaction(SP)immunohistochemistry and computered image analysis system.Correlations between the gray degree of CXCL9 and CXCL10 and the number of CD56+NK cells in upper tissue were analyzed by Spearman's correlation ceefficient rank tesL Results The phenotype of 98.7%decidua NK cells was CD56bright.The genes of CXCR3 and CXCR4 were expressed in decidua NK cells and that of CXCL9 and CXCL1O were expressed in early pregnancy decidua and CXCLI2 in early pregnancy villi.CXCL9 and CXCL10 were expressed in the cytoplasm of surface epithelia,glandular epithelia and stromal cells of early pregnancy deeidua and were not expressed in villi by immunohistochemistry.The gray degree of CXCL9 and CXCL10 in the secretory phase endometrium(56±43,59±47)was stronger than that in the proliferative phase(16±18,8±14,P<0.05)and reached the highest(143±35,158±29,P<0.05)in the early pregnancy decidua.The number of cD+56 NK cell in the secretory phase endometrium(60±20)was more than that in the proliferative phase endometrium(23±4,P<0.05)and was the most in the early pregnancy decidua(114±15,P<0.05).The gray degree of CXCL9 in upper tissue had a positive correlation with the number of CD+56 cells(r=0.88,P<0.05)and that of CXCL10 had a similar pattern to CXCL9(r=0.86,P<0.05).Condusion The interactions between CXCL9,CXCL10 and CXCL12 expressed in decidua and villi and CXCR3,CXCR4 expressed in CD+56 decidua NK cells may influence the CD+56 NK cell recruitment at the maternal-fetal interface.

Experiment Ⅰ. Twenty-eight rats were randomly assigned into Near-Infrared Information Radiation (NIIR) group and control group. Two weeks later each rat was innoculated intraperitoneally with Salmonella typhosa H antigen (HAg) and cyclophosphamide (CY). Peripheral lymphocyte counts in the NIIR group were significantly higher than those in the control group on the fifth day after administration of CY. Experiment Ⅱ, Fifty-four rats were randomly divided into NIIR group given CY and H Ag intraperitoneally, CY and H Ag group and H Ag group for treatment. By the end of the fourth week, the survival rate and serum IgG level in the NIIR group were significantly higher than those in the CY and HAg group. By the end of 2nd week, the titer of the anti-H antibody of the HAg group and NIIR group was significantly higher than that of the CY and HAg group. Experiment Ⅲ. Thirty rats were randomly allocated to NIIR group and control group. Spleen cells were taken and cultured with Con A for 24h to induce IL-2 and the activity of IL-2 in the NIIR group was significantly higher than that in the control group. The NK activity in NIIR group was higher but not significant and ADCC in the NIIR group was significantly higher than that in the control group. The results suggest that NIIR is capable of enhancing immunoreaction in immunosuppressive bodies by promoting the function recovery of T helper cells, therefore NIIR is effective to regulate the immunological function on chronic active hepatitis.

Objective To investigate the effects of nuclear factor κB(NF-κB) antisense oligodeoxynucleotides (AS-ODNs) on transforming growth factor β1 (TGF-β1)-induced epithelial mesenchymal transition (EMT) in human renal tubular epithelial cells. Methods NF-κB AS-ODNs were transferred into the human renal tubular epithelial cells (HK-2), and the cells were stimulated by 10 μg/L TGF-β1 for 24 hours. The expression of NF-κB mRNA and α-SMA mRNA were measured by RT-PCR. α-SMA protein expression was assessed by fluorescence spectrum.Results TGF-β1 significantly up-regulated the expression of NF-κB mRNA, which was 8 folds of blank control (P<0.01). TGF-β1-indueed epithelial mesenchymal transition was inhibited by NF-kB AS-ODN and the NF-KB mRNA expression of AS-ODNs was decreased by 75%(P<0.05).The expression of α-SMA mRNA and protein was also down-regulated obviously (P<0.05).Conclusion NF-κB AS-ODN can inhibit the expression of NF-κB and the epithelial-mesenchymal transition, which may be a new therapeutic strategy against tubulointerstitial fibrosis.

OBJECTIVE:To analysis outcomes of patients with knee osteoarthritis treated by mini-incision knee replacement accompanied by early rehabilitation. METHODS:Outcomes of 28 knee osteoarthritis patients (46 knees) who were treated by joint replacement from 2005 June to August were retrospectively analyzed. Sixteen patients were served as experimental group,including 4 males and 12 females,aged 59-77 (65.3?5.3) years,and the course of disease was 10-15 (13.4?4.3) years. These patients were received mini-incision knee replacement,accompanied by specified early rehabilitation procedure. Early rehabilitation procedure comprised psychological treatment,training before knee replacement,muscle strength training after knee replacement,and correction of poor gait,joint position sense training and exercise for coordination after knee replacement,early quadriceps femoral muscle active extension knee exercises especially emphasized. Another 12 patients were served as control group,including 5 males and 7 females,aged 60-75 (67.5?4.7) years,with course of disease 8-18 (12.8?4.9) years,they were received normal knee replacement. Pain severity,joint motion ranges and functional situations were evaluated. RESULTS:Twenty-eight patients stayed in hospital for (13.2?2.7) days (ranging from 10 days to 16 days). All the patients were followed up 9 to 12 months. There were no significantly differences in pain severity,joint motion ranges and functional scores on admission between two groups. Pain,joint motion and joint functions were improved greatly after knee replacement. The joint motion ranges and functional scores were higher on discharge and the last follow-up in the experimental group than that of the control group. CONCLUSION:The program that consists of Mini-incision knee replacement,which protected quadricep muscle intactness and diminished surgical injury,accompanied by psychological treatment,preoperational preparation,postoperational training,correction of gait,training in articular position sensation and all the body coordination,can improve the outcomes of the knee osteoarthritis patients with knee replacement.