Ischemic preadaptation and ischemic postconditioning are the self-protection mechanism of the body, can reduce blood anoxic injury of brain tissue, inhibit nerve cell apoptosis, and reduce infarction area.However, due to the time of occurrence of ischemic disease is unpredictable, ischemic postconditioning research to guide clinical work more operational and practical, and thus become the focus of research. Apoptosis of programmed cell death is widespread in the process of biological life and has a close relationship with jak2/stat3/bcl-2 signaling pathway, PI3K/AKT signaling pathways and apoptotic molecules.microRNA as a class of highly conserved non-coding small RNA, its transcriptional expression involved in regulating cell value, development and apoptosis in a series of life activities.

Objective To investigate the effect of variation of cesarean sections during labour and their indications on the total cesarean section rate. Methods A total of 458 cases of cesarean section was selected from January to June of 1990,1996,2002. They were divided as indication group and no indication group. The change of the indication and cesarean section rate was compared. Results The ratio of cesarean section during labour in total cesarean sections rised. The ratio was 22.0%, 20.8% and 39.4% in 1990, 1996 and 2002 respectively. The proportion of no indication surgery in 2002(63.37%) showed significant growth as compared with that of 1990 (33.84) and 1996 (32.58). Of all cases of cesarean section having indications, the rate of trial produce failure increased in 2002 (25.81%) while it was 11.45% and 16.67% in 1990 and 1996 respectively. The rate of fetal distress decreased from 25.19% (1990), 21.67% (1996) to 12.90% (2002). Conclusion Ascen ding of cesarean section rates during labour was an important factor that increased cesarean section rate in recent years. To decrease the total rates of cesarean section, many important measures should be done such as paying more attention to social factors, reinforcing propaganda and maternal health care , encouraging spontaneous vaginal delivery, emphasizing company during labour and analgesia or pain free delivery, laying stress on the management and monitoring during first stage of labour as well as psychological care.

Objective:To analyze OLFM1 by bioinformatics and prepare its polyclonal antibody.Methods:According to the bioinformatics analysis and prediction of the possible high structure,hydrophobicity and antigenicity of OLFM1 and the principal of antibody project,a partial peptide of OLFM1 with 20-amino acid residues with was synthesized after homology search.The synthesized peptide was then used to immunize rabbit.The specificity and titer of polyclonal antibody against OLFM1 were identified via ELISA and Western blot.Results:Polyclonal antibody against OLFM1 was proved to recognize OLFM1 protein specifically,and its titers reached 1?32 000.Conclusion:By the bioinformatics analysis and prediction,the hydrophilicity and antigenicity of OLFM1 are analyzed.The polyclonal antibody against OLFM1 is successfully obtained.

Objective To study the antitumor mechanism of DHA compound. Methods RT-PCR was used to investigate the effects of DHA compound on H-Ras and pl6 mRNA transcription in gastric adenocarcinoma. Results Compared with control, the content of H-Ras mRNA was decreased and the content of p16 mRNA was increased in gastric adenocarcinoma significantly after treated with DHA compound. Conclusion The transcription of H-Ras gene was decreased and the transcription of pl6 gene was increased in gastric adenocarcinoma after treated with DHA compound and thus the cancer cell growth was inhibited.

Radiotherapy is one of major cancer treatment methods.However,radiation resistance is an important reason to restrict the efficacy of radiotherapy and lead to treatment failure.In recent years,the relationship between the canonical Wnt signaling pathway and tumor radiation resistance has more and more attention of the scholars.This review summarized recent ten years findings concerning the canonical Wnt signaling pathway and tumor radiation resistance and tried to find some valuable rules or some internal relationships among different pathways by systemically analyzing.

Objective To investigate the expressions of apoptosis stimulating protein of P53 (ASPP)family in colorectal carcinoma tissue and to explore their relationship with the clinicopathological characteristics of colorectal carcinoma,and to clarify the effect of ASPP family in the development of colorectal carcinoma.Methods 45 cases of colorectal carcinoma tissue and 20 cases of healthy controls were selected. Among 45 cases of colorectal carcinoma tissue, there were 1 1 cases of well differentiated colorectal carcinoma, 2 1 cases of moderately differentiated colorectal carcinoma,and 13 cases of poorly differentiated colorectal carcinoma;7 cases of T1 stage colorectal carcinoma,8 cases of T2 stage colorectal carcinoma,25 cases of T3 stage colorectal carcinoma,and 5 cases of T4 stage colorectal carcinoma;19 cases of N1 stage with lymph node metastasis,26 cases of N0 stage without lymph node metatasis.The expressions of ASPP1,ASPP2,and iASPP in 45 cases of colorectal carcinoma tissue and 20 cases of normal colon tissue were detected by immunohitochemistry SP method,and the correlations between the expressions of ASPP family and the pathologic typing,infiltrative depth,and lymph node metastasis of colorectal carcinoma were analyzed. Results ①The immunohitochemical staining results showed that the ASPP family members expressed in colorectal carcinoma tissue and normal colon tissue, and there were no significant differences in ASPP1 and ASPP2 positive rates between colorectal carcinoma tissue and normal colon tissue (P>0.05);the positive expression rate of iASPP in colon cancer tissue was higher than that in normal colon tissue (P<0.01).② The expression of ASPP1 in colon caner tissue had no correlation with the differentiation degree of tumor cells (rs=0.163,P>0.05);the expression of ASPP2 positive rate was decreased when the differentiation degree of tumor cells reduced,they had positive correlation (rs=0.454,P=0.002);the expression of iASPP in colon cancer tissue had no correlation with the differentiation degree of tumor cells (rs=-0.171,P>0.05).③ The expression of ASPP1 in colon caner tissue had no correlation with the infiltrative depth of tumor (rs=-0.268,P>0.05);the expression of ASPP2 positive rate was decreased when the tumor infiltrative depth increased,they had negative correlation (rs=-0.348,P<0.05);the expression of iASPP in colonic carcinoma caner tissue had no correlation with the infiltrative depth of tumor (rs=0.231,P>0.05).④The expressions of ASPP1,ASPP2, and iASPP in colon caner tissue had no correlation with lymph node metastasis (rs=0.089,rs=0.044,rs=0.210, P>0.05).Conclusion The expression levels of iASPP in colon cancer and normal colon tissues are different,it may be useful for the diagnosis, differential diagnosis and evaluation in benign and malignant colorectal diseases. The expression of iASPP is negatively correlated with the pathologic typing and neoplasm staging of colorectal carcinoma,it indicates that iASPP can be used as a indicator in judging the prognosis of colorectal carcinoma.

Objective To evaluate the predictive value of modified early warning score (MEWS) and SMART-COP score on mechanical ventilation in patients with severe influenza A H1N1. Methods Fifty cases diagnosed with severe influenza A H1N1 were retrospectively analyzed. The MEWS and SMART-COP score were calculated. The area under the receiver operating characteristic (ROC) curve (AUC) was evaluated using ROC curve. MEWS, SMART-COP score and AUC were analyzed by Z test. Results The AUCs of MEWS and SMART-COP score for predicting mechanical ventilation were 0. 923 and 0. 889, respectively, which were not significantly different (Z=0. 548, P =0. 584).Conclusion Both of MEWS and SMART-COP score are predictive factors of mechanical ventilation in the patients with severe influenza A H1N1.

Objective To evaluate the clinical value of tomography ultrasonic imaging (TUI) in staging carcinomas of the cervix.Methods Eighty-seven patients with biopsy proven cervical cancer who underwent transvaginal TUI examination were enrolled.Clinical and ultrasonic staging were based on the FIGO staging system.Surgical-pathological or MR results was taken as golden standard.Ultrasonic staging were compared with clinical staging.Tumor sizes of 38 cases of cervical cancers measured by TUI were recorded and compared with the pathological results.Results The overall accuracy of preoperative TUI staging was higher than that of preoperative clinical staging (91.95 ％ vs 81.60 ％,P ＜0.01).Mean size of the 38 malignant tumors was 2.5 cm×2.1 cm×2.2 cm by TUI and 2.6 cm×2.1 cm×2.3 cm by pathological samples (P ＞ 0.05).Conclusions TUI technology may be useful in the noninvasive examination of preoperative staging of carcinoma cervix.

Objective To invesigate the influence of breathing motion on intensity-modulated radiotherapy (IMRT) of chest wall after radical mastectomy,and explore clinical value of accurately determined target volume.Methods A total of 17 radical mastectomy patients underwent 3DCT simulation scans sequentially followed by 4DCT simulation scans during free breathing.The targets and normal organs was determined based on CT images respectively.Three sets of radiotherapy plan were designed for each patient:plan 3D,plan 4D and plan 3D-A.The Plan 3D and plan 4D was designed based on 3D and 4D targets respectively.Plan 3D was copied to 4D target with the same isocenter coordinates.The dose distribution was calculated separately to evaluate the dose-volume histograms parameters for PTV,ipsilateral lung and heart,respectively.Two planning parameters was compared with paired t-test or Wilcoxon sign-rank test.Results The average volume of PTV4D was (10.35 ± 4.80) ％ larger than PTV3D (P =0.000).Compared with plan 3D,the V100,V95,V90,D95,D90,Dmin of plan 3D-A were reduced,that were (0.78 -18.0)％ (P=0.000),(0.01-3.90)％ (P=0.000),(0-2.12)％ (P=0.000),(13-222) cGy (P=0.000),(1-118) cGy (P=0.000),(6-1 910) cGy (P=0.000).However,the V20,V10,V5,Dmean of the ipsilateral lung and V30 of heart were same between 3D plan and 4D plan (P =0.288,0.407,0.435,0.758,0.575).Conclusions The respiratory motion may reduce the target dose and its coverage in chest wall treatments,so 4DCT plan could accurately define target volume without increasing the exposure dose of normal tissues.

Objective:To prepare gACE polyclonal antibody for functional study of gACE.Methods:According to the bioinformatics analysis and prediction of the possible conformational structure,hydrophobicity and antigenicity of gACE and the principal for antibody production,a partial peptide with 18-amino acid residues of gACE was synthesized after homology search.The synthesized peptide was then used to immunize after coupling with KLH.The properties of anti-gACE were analyzed by ELISA,Western blot and immunohistochemistry.Results:The antigenicity was repredicted by bioinformatics analysis.The polyclonal antibody against gACE was successfully obtained and its specificity and sensitivity we conformed by ELISA,Western blot and immunohistochemistry.Conclusion:By the bioinformatics analysis and prediction,the hydrophilicity and antigenicity of gACE are analyzed.The antibody of gACE is successfully obtained.