Gastric cancer is the second leading cause of cancer mortality worldwide,and in Asian countries like Japan,Korea and China,it remains the top killing cancer.As most cases of gastric cancer are in the advanced stage of the disease when they are first diagnosed,patients receiving conventional therapies including surgery,chemotherapy and radiotherapy have poor prognosis.An emerging modality called tumor molecular targeted therapy provides promise and insight to combat this malignancy.This article discusses the molecular basis of gastric cancer targeted therapy from the perspectives of screening and application of target molecules,modulation of tumor microenvironment and antitumor immunotherapy.

Aged ; Carcinoma, Non-Small-Cell Lung ; pathology ; therapy ; Humans ; Lung Neoplasms ; pathology ; therapy

Objective　To investigate the effect of a new cloned full length gene, C2 gene which encodes a translation initiation factor, on cell cycle and the relationship between C2gene and apoptosis. Methods　Construct a eukaryotic vector carrying the full length of C2 gene, then transfected it into a gastric cell line-SGC7901 cells and gained cells expressing C2 protein transiently or stably. Test the expression of C2 protein and the change of cell cycle of the transfected cells using the flurescence activatied cell sorting(FACS) and the changes of their ultra structure electromicroscopically. Results　The C2 gene eukaryotic expression vector was successfully constructed. FACS showed the C2 protein expression ratio of transfected cells was 32.3%, while the empty control group was 0.9%. The test of cell cycle showed that there was appeared apoptosis peak in transiently or stably transfected cells. The apoptosis cells can be seen electromicroscopically among the C2 transfected cells. Conclusions　C2 gene transfection can lead SGC7901 cells to apoptosis, but the mechanism has to be further study.

Objective To study the performance verification of lactate dehydrogenase(LDH) in the Johnson Vitros 5 .1 FS bio‐chemical analyzer .Methods According to CLSI instrumentation evaluation standard and referring to the validation scheme provided by the Johnson company ,the precision ,accuracy ,linear range of LDH ,maximum dilution degree ,biological reference range were verified .Results The LDH intra‐batch and inter‐batch precision experiments were≤3 .30% ;the accuracy experiment≤4 .00% ;the determination coefficient of the linear experiment was 0 .997 2 ;the LDH maximum dilution degree was 8 times with saline solution dilution;the biological reference range experiment verified that the reference range 313-618 U/L provided by the VITROS Meth‐odology Manual could be quote .Conclusion The performance verification of LDH detected by the Johnson Vitros 5 .1 FS biochemi‐cal analyzer basically conforms to the requirements of the quality objectives and manufacturer′s instructions ,and meets the needs of clinical test .

Objective To explore a highly sensitive and highly specific method to detect the serum MG7 antigen (Ag) level for early gastric cancer diagnosis.Methods The serum MG7-Ag level was detected by enzyme-linked immunosorbent assay (ELISA) method in 116 preoperative gastric cancer patients,63 postoperative gastric cancer patients,41 patients with precancerous lesion,37 patients with precancerous diseases,50 healthy individuals and 281 patients with other cancers.Meanwhile,the expression of MG7-Ag was also examined with immunohistochemistry in patients with gastric cancer or precancerous lesion.Chi-square test was used for comparing positive rates of the two detection methods.Results The positive rate of MG7-Ag determined by ELISA was 83.6％(97/116) of preoperative gastric cancer patients,45.2％(28/62) of lung cancer patients,45.5％(20/44) of rectal cancer patients,17.6％ (12/68) of colonic cancer patients,14.2％ (6/42) of breast cancer patients,47.6％ (30/63) of postoperative gastric cancer patients,19.5 ％ (8/4 1) of patients with precancerous lesions,5.4 ％ (2/37) of patients with precancerous diseases and 0 of healthy individuals.The sensitivity of ELISA (83.6 ％) was similar with that of immunohistochemistry (94.0％)(P＞0.05).However,the false positive rate of ELISA (12.8 ％) was lower than that of immunohistochemistry (51.3 ％) (x2 =26.491,P＜0.01).There was statistically significant difference in MG7 Ag expression in gastric cancer with different clinical stages (x2=15.564,P＜0.01).Conclusion This ELISA method might be a non-invasive screening method for population with high risk of gastric cancer.

Evaluating the prevalence of kidney damage according to population-based studies in different communities has been limited in developing countries. We conducted a population-based screening study in Uygur people of Urumqi, aiming to identify the prevalence and associated risk factors of chronic kidney disease (CKD) in Uygur populations. A total of 2576 residents (>18 years) from four districts of Urumqi were interviewed from June 2007 to January 2009 and tested for haematuria, albuminuria and reduced renal function. Associations between age, gender, smoking, diabetes mellitus, hypertension, hyperuricaemia and kidney damage were examined. There were 2576 subjects enrolled in this study. After age correction, the prevalence of albuminuria, haematuria and reduced estimated glomerular filtration rate (eGFR) was 3.58%, 2.26% and 1.03%, respectively. Approximately 5.65% of the sample population had at least one indicator of kidney damage. Age, diabetes mellitus, hypercholesteremia, hyperuricaemia and hyperlipidaemia were independently associated with CKD. In the general Uygur adult population from Urumqi, 5.65% had either proteinuria, haematuria or reduced eGFR, indicating the presence of kidney damage, with an awareness of only 1.05%. The high prevalence and low awareness of CKD in this population suggest an urgent need for CKD prevention programs in Uygur people.

Objective To assess and compare the efficacy and safety of ecabet sodium-based quadruple therapy versus bismuth-based quadruple therapy for Helicobacter pylori (Hp) eradication.Methods A multicenter,randomized,positive controlled clinical trial was carried out.The object of the study were chronic gastritis patients at 8 hospitals in Xi'an,Beijing,Shanghai and Guangzhou from June 2009 to June 2011.All patients were divided into treatment group and control group.In treatment group,patients received ecabet sodium-based quadruple therapy (two times per day,omeprazole magnesium 20 mg,amoxicillin 1000 mg,clarithromycin 500 mg and ecabet sodium 1.0 g each time for 10 days.In control group,patients were assigned to receive bismuth-based quadruple therapy (two times per day; omeprazole magnesium 20 mg,amoxicillin 1000 mg,clarithromycin 500 mg and bismuth potassium citrate 220 mg each time) for 10 days.The Hp eradication was determined by 13C or 14C urea breath test at the 38th day after the treatment and the eradication rate was calculated.Side effects were recorded and analyzed.The data were analyzed by chi square test and Fisher's exact test.Results A total of 311 patients were recruited,and 155 patients were allatted in treatment group and 156 in control group.The per-protocol (PP) analysis indicated that the eradication rates of treatment group arid control group were 75.71％(106/140) and 77.37％(106/137) respectively,and there was no significant difference x2 =0.106,P=0.745).The intention-to-treat (ITT) analysis indicated that the eradication rates of treatment group and control group were 68.39％ (106/155) and 67.95％ (106/156) respectively,and there was no significant difference x2 =0.007,P=0.934).The side effects rates of treatment group and control group were 20.00％ (31/155) and 25.64％(40/156) respectively,and the difference was not statistically significant (Fisher's exact test,P=0.280).No serious side effect was observed in two groups.Conclusion The efficacy and safety of ecabet sodium-based quadruple therapy for Hp eradication in chronic gastritis patients may be the same as bismuth-based quadruple therapy.

Evaluating the prevalence of kidney damage according to population-based studies in different communities has been limited in developing countries. We conducted a population-based screening study in Uygur people of Urumqi, aiming to identify the prevalence and associated risk factors of chronic kidney disease (CKD) in Uygur populations. A total of 2576 residents (＞18 years)from four districts of Urumqi were interviewed from June 2007 to January 2009 and tested for haematuria, albuminuria and reduced renal function. Associations between age, gender, smoking,diabetes mellitus, hypertension, hyperuricaemia and kidney damage were examined. There were 2576subjects enrolled in this study. After age correction, the prevalence of albuminuria, haematuria and reduced estimated glomerular filtration rate (eGFR) was 3.58%, 2.26% and 1.03%, respectively. Approximately 5.65% of the sample population had at least one indicator of kidney damage. Age, diabetes mellitus, hypercholesteremia, hyperuricaemia and hyperlipidaemia were independently associated with CKD. In the general Uygur adult population from Urumqi, 5.65% had either proteinuria,haematuria or reduced eGFR, indicating the presence of kidney damage, with an awareness of only 1.05%. The high prevalence and low awareness of CKD in this population suggest an urgent need for CKD prevention programs in Uygur people.

Objective To investigate the prevalence of chronic kidney disease (CKD)and risk factors in the adult population of Tianshan district in Urumqi, Xinjiang. Methods A total of 2131 residents from 4 communities in Tianshan district of Urumqi city were randomly selected using a stratified, multistage sampling. All the residents were interviewed and tested for morning spot urine of albumin to creatinine ratio (ACR) (abnormal ≥ 30 mg/g), morning spot urine dipstick of hematuria ( abnormal ＞3 red blood cells/HP or greater) and pyuria ( abnormal＞ 5 white blood cells/HP) confirmed by microscopy. Renal function was determined with abbreviated MDRD equation [reduced estimated glomerular filtration rate (eGFR)＜60 ml ·min-1 ·(1.73 m2)-1]. The associations of kidney damage indicators with age, gender, hypertension, diabetes mellitus, income,education, cholesterol, triglyceride and smoking were examined. Results Eligible data of 2131 subjects were collected in the study. After the adjustment of age and gender component, the prevalence of albuminuria was found in 2.63％ (95％CI:1.78％-3.48％) of subjects, hematuria in 7.43％(95％CI:6.11％-8.75％) and reduced renal function in 1.72％(95％CI:1.08％-2.35％).Approximately 9.99％(95％CI:8.47％-11.55％) of subjects had at least one indicator of kidney damage. Multivariate logistic regression revealed that albuminuria, hematuria, age and hyperuricemia were independently associated with reduced renal function. Hematuria and reduced renal function were independently associated with albuminuria. Albuminuria, reduced renal function and female were independently associated with hematuria. Conclusion In urban adult population over 35 years old of Urumqi, a big city in western China, the prevalence of CKD is 9.99％, the recognition is 2.44％ and the risk factors of CKD are similar to those of other domestic big cities and western developed countries.

Background:Therapeutic drug monitoring(TDM)has emerged as the important method for managing loss of response to infliximab.The effect of reactive and proactive TDM on clinical outcomes in inflammatory bowel disease(IBD)is uncertain.Aims:To evaluate the effect of proactive and reactive TDM of infliximab on the prognosis of patients with IBD.Methods:Clinical data of 99 IBD patients treated with IFX from January 2017 to October 2021 at the First Affiliated Hospital of Air Force Military Medical University were retrospectively analyzed,including 34 patients with proactive TDM and 65 patients with reactive TDM.The rate of treatment failure,IBD-related surgery or hospitalization were compared between the two groups.Logistic regression analysis was used to determine the independent risk factors of treatment failure.Results:The median follow-up of the patients was 21(13,32)months.The rate of treatment failure,IBD-related hospitalization rate of proactive TDM group were significantly lower than those of reactive TDM group(P<0.05),however,no significant difference in IBD-related surgery rate was found between two groups(P=0.081).Univariate analysis showed that ileocolonic resection before TDM,antibodies to infliximab(ATI)and reactive TDM might be correlated with treatment failure(P<0.05).Logistic regression analysis showed that reactive TDM(OR=5.829,95%CI:1.070-31.754,P=0.042)was the risk factor of treatment failure,and ileocolonic resection before TDM(OR=0.119,95%CI:0.019-0.736,P=0.022)was the protective factor of treatment failure.Conclusions:Compared with reactive TDM group,proactive TDM can significantly decrease the rate of treatment failure and IBD-related hospitalization rate.Reactive TDM is the risk factor of treatment failure,and ileocolonic resection before TDM is the protective factor of treatment failure.