Gastric cancer is one of the most common malignancies in the digestive system.Most of the patients with gastric cancer have advanced disease at the time of diagnosis.Chemotherapy is still the mainstay of treatment for advanced gastric cancer,but efficacy of chemotherapy was modest.Molecular targeted therapies have emerged as a novel approach to the treatment of both hematological and solid tumors in recent years.The understanding of molecular biological mechanisms underlying the formation,progression and metastasis in advanced gastric cancer has enabled us to use the new approach to treat this disease in clinical practice.These therapeutic strategies include targeting EGFR signal transduction pathway,anti-angiogenesis,targeting NF-?B signal transduction pathway and cyclin-dependent kinase inhibitors.In this review,a brief introduction of the current status of the molecular targeted therapies in the treatment of gastric cancer was presented.Bevacizumab,anti-VEGF monoclonal antibody targeting the angiogenesis pathway has been approved for the treatment of colorectal cancer by FDA,has been reported to show effectiveness in metastatic gastric cancer when combined with cytotoxic agents.Inhibition of NF-?B signal transduction pathway such as PS-341(proteasome inhibitor,bortezomib) approved for the treatment of refractory or recurrent multiple myeloma by FDA has also been used to combine with chemotherapy for gastric cancer.There are also encouraging reports on the combination of standard chemotherapy with Cetuximab,Matuzumab,Gefitinib,Erlotinib and Trastuzumab which target the EGFR and HER2 signal transduction pathways.Flavopiridol is a cyclin-dependent kinase inhibitor with low molecullar weight that aims at the regulatory process of the cell cycle but this needs further clinical trial.

OBJECTIVE:To determine the content of 5 kinds of heavy metal elements in Astragalus membranaceus from Longxi of Gansu province,i.e. Pb,Cd,Cu,As,Hg. METHODS:Wet digestion pretreatment was carried out for samples and atomic absorption spectrometry (AAS) was used for the determination of heavy metal elements. RESULTS:The contents of 5 kinds of heavy metal elements in A. membranaceus from Longxi of Gansu Province were lower than the limit. CONCLUSION:AAS method can accurately determine the content of heavy metal elements in A. membranaceus.

Medical teaching for foreign students has been carried out in our university recently.Combining the teaching experience of dermatology and venereology,analyzing relative teaching problems and proposing corresponding countermeasures,this paper tries to explore more efficient English teaching methods for foreign students.

Objective To study the effect of Danxuan Koukang(DXKK) drug serum on proliferation and proliferating cell nuclear antigen(PCNA) production of human oral mucosal fibroblasts(FB) induced by areca nut extract(ANE).Methods Human oral mucosal FB were cultured in vitro,100 ?g/mL ANE was used as inducement and 10% DXKK drug serum as intervenor.The cell proliferation rates were measured by MTT assay,PCNA productions were examined by immunocytechemistry.Results MTT assay showed OD value in DXKK groups were significantly decreased compared with the induced group(P

Aged ; Amyloidosis ; complications ; diagnosis ; Diagnostic Errors ; Dyspnea ; etiology ; Edema ; etiology ; Female ; Humans ; Immunoglobulin Light-chain Amyloidosis

Objective To investigate the method of clinical diagnosis and treatment for urinary tract endometriosis (UTE).Methods The clinical data of 7 patients with UTE were analyzed retrospectively.Mean age was 36.5-year old.Two cases were diagnosed by taking cystoscopic biopsy tissue,the others were confirmed by intraoperative and postoperative pathology.Under the adjuvant treatment of endocrine,2 patients were performed partial cystectomy and ureteral resection and end-to-end anastomosis in 4 patients,1 patient undertook ureteric reimplantation.Results Among 7 patients,2 patients had endometrial ectopic bladder,4 patients had endometrial ectopic ureter,1 patient had endometrisis of bladder and urter.After operation,no leak and recurrence occurred 2-3 years of follow-up.Conclusions UTE is rarely seen and usually escape the attention of the physicians,endocrine therapy with surgical resection is the primary method.Choice of surgical approach should be based on a variety of factors lesion location,scope,depth,bilateral renal function,etc.

Objective To evaluate the relationship between fragile histidine triad(FHIT) transcription abnormalities and HPV16 infection and human cervical tumorigenesis.Methods Total RNA from 5 cervical carcinoma cell lines(SiHa,HeLa,RJC-1,CS1213 and C4-1),58 primary cervical cancer specimens and 18 normal cervical epithelial tissues were extracted and FHIT transcripts were characterized by a two-step(nested) reverse transcription(RT)-PCR.The seven of the PCR products with different size were purified and sequenced.HPV16 infection was assessed by PCR.Results ① There were altered FHIT transcripts in SiHa,HeLa and C4-1 cells.Aberrant FHIT transcripts were detected in 39 out of the 58 cervical cancer samples(67.2%),but none out of 18 in the normal cervix tissue specimens(0%);HPV16 infections were identified in 37 of the 58 cervical cancer tissues(63.8%),but 1 in the 18 normal cervical epithelial tissues(5%),which showed a significant difference between these two groups(P0.05).③ The exon 5 and exon 6 were mainly deleted in the altered FHIT transcripts and no insertion and point mutation were found by DNA sequencing.Conclusion Aberrant FHIT expression was significantly common in cervical cancers and was correlated with HPV16 infection.These findings suggest that the tumor suppressor gene FHIT and high risk HPV16 may play a very important role in human cervical carcinogenesis.

Objective To explore the predictive value of cholinesterase (ChE) in the prognosis of gerontal patients with systemic inflammatory response syndrome. Methods The clinical data of 124 elderly patients with systemic inflammatory response syndrome collected from September 2009 through September 2010 were retrospectively analyzed. All patients were divided into death group and survival group according to the outcome of patients. The cholinesterase ( ChE), albumin, D-Dime, lactic acid and C-reactive protein (CRP) were detected, and the APACHE Ⅱ and GCS scores were documented in the first 24 hours in the ICU. Results There were no significant differences in age, gender, APACHE Ⅱ score and GCS score of patients between death group and survival group ( all P ＞ 0. 05 ), but there were significant differences in lactic acid, D-Dime, albumin, CRP and ChE between two groups ( theP values were 0.011,0.011, 0. 007,0. 008, 0. 000, respectively) . The results of multiple factors regression analysis showed that age, gender,lactic acid, D-Dime, albumin, CRP, APACHE Ⅱ score, and GCS score were not the independent risk factors of prognosis of gerontal patients with SIRS ( the P = 0. 401, 0. 165, 0. 446, 0. 841,0. 615, 0. 120,0. 502, 0. 184, respectively) except ChE ( P = 0. 000) . The receiver operating characteristic curve (ROC) of ChE in the gerontal patients with SIRS showed the area under curve (AUC) = 0.797, SE =0.04, P=0. 000, and the ChE = 103.00 U/L could be a diagnosis point with sensitivity = 0.793, 1-specificity = 0. 258. The correlation analysis showed that the APACHE Ⅱ score, CRP, and albumin were poorly correlated with ChE ( Kendall coefficients were 0. 061, 0. 231, and -0. 090, and theP = 0. 161,0. 000, and 0. 069, respectively ) . Conclusions ChE maybe played a important role in the gerontal patients with SIRS, and could be a predictive index for the prognosis of gerontal patients with systemic inflammatory response syndrome.

This article analyses the pre-management methods and measures for the youth science fund projects granted by the National Natural Science Foundation of China.Systematic procedures include mobilization,preliminary research preparation,professional training and counseling,modifying the application,form and content examination,which can improve efficiency of the National Natural Science Foundation of China youth science project management.

Annexin A1 (ANXA1) is a kind of endogenous scaffold protein. Previous research showed that ANXA1 could increase markedly with multiple increase of drug resistance in K562/imatinib cell lines in vitro. Here the stable transfection cell strains K562-pEGFP-N1 which was the native control and K562-pEGFP-N1-ANXA1 which can stably express ANXA1 were established using the Lipofectamine 2000 in order to find whether ANXA1 involved in the drug resistance. Cell growth inhibition experiment via MTT and cell proliferation experiment via MTS showed that K562-pEGFP-N1-ANXA1 cell strain was more sensitive to imatinib than the K562-pEGFP-N1 cell strain, and however the ability of proliferation of K562-pEGFP-N1-ANXA1 cell strain did not change compared with the negative control. Western blotting results showed that the expression of proteins in Annexin family did not change; drug resistance proteins, Bcr-Abl/p-Bcr-Abl (Tyr245), Src family kinase for example, did not change; proteins related with cell proliferation and cell cycle, such as ERK1/2MAPK, p-38MAPK, CDK1 and Wee 1, did not change either in the K562-pEGFP-N1-ANXA1 cell strain compared with the negative control. The co-immunoprecipitation result showed that the interaction between ANXA1 and beta-actin in the K562-pEGFP-N1-ANXA1 cell strain increased markedly. The deduction was that ANXA1 may make the K562-pEGFP-N1-ANXA1 cell strain more sensitive to imatinib due to the increased uptake of imatinib via the increase of ANXA1 and the interaction between ANXA1 and beta-actin in the K562-pEGFP-N1-ANXA1 cell strain in vitro.