AIM: To study the expression of cyclooxygenase-2 (COX-2)in human gastric cancer tissues and their paired adjacent mucosa, as well as mucosa from gastric antrum and corpus of the first-degree relatives of the recruited...AIM: To study the expression of cyclooxygenase-2 (COX-2)in human gastric cancer tissues and their paired adjacent mucosa, as well as mucosa from gastric antrum and corpus of the first-degree relatives of the recruited cancer patients.METHODS: The expression of COX-2 mRNA in 38 patients with gastric cancer and their 29 first-degree relatives and 18 healthy controls was assessed by the real time RT-PCR.The expression of COX-2 protein was determined by Western blot.RESULTS: A marked increase in COX-2 mRNA expression was found in 20 of 37 (54%) cancerous tissues compared to their respective paired normal mucosa (P＜0.001).Interestingly, increased COX-2 mRNA expression was also found in mucosa of the corpus (6/29) and antrum (13/29)of their first-degree relatives. Increased COX-2 mRNA expression was more frequently observed in the antrum biopsies from cancer patients than in the antrum biopsies from healthy controls (P＜0.05). In addition, 3 of 23 (13%)patients with atrophic mucosa and 6 of 35 (17%) patients with intestinal metaplasia showed increased COX-2 mRNA expression. Furthermore, COX-2 expression increased in H pylori-positive tissues, especially in antrum mucosa.CONCLUSION: Increased COX-2 expression is involved in gastric carcinogenesis, and may be necessary for maintenance of the malignant phenotype and contribute to Helicobacterpylori-associated malignant transformation.展开更多
AIM:To investigate gastric cancer screening and preventive behaviors among the relatives of patients with gastric cancer[i.e.,gastric cancer relatives(GCRs)].METHODS:We examined the Korean National Health and Nutritio...AIM:To investigate gastric cancer screening and preventive behaviors among the relatives of patients with gastric cancer[i.e.,gastric cancer relatives(GCRs)].METHODS:We examined the Korean National Health and Nutrition Examination Survey 2005(KNHANESⅢ) database and compared the gastric cancer screening and preventive behaviors of GCRs(n=261)with those of non-GCRs(n=454)and controls without a family history of cancer(n=2842).RESULTS:The GCRs were more likely to undergo gastric cancer screening compared with the control group(39.2%vs 32.3%,adjusted odds ratio:1.43,CI:1.05-1.95),although the absolute screening rate was low.Dietary patterns and smoking rates did not differ significantly between the groups,and a high proportion of GCRs reported inappropriate dietary habits(i.e.,approximately 95%consumed excessive sodium,30% were deficient in vitamin C,and 85%were deficient in dietary fiber).CONCLUSION:The gastric cancer screening and preventive behaviors of GCRs have yet to be improved.To increase awareness among GCRs,systematic family education programs should be implemented.展开更多
AIM： TO investigate the correlation of depressed-type （0-IIc） colorectal neoplasm and family history of firstdegree relatives （FDR） with colorectal cancer （CRC）. METHODS： This cross-sectional study was conduct...AIM： TO investigate the correlation of depressed-type （0-IIc） colorectal neoplasm and family history of firstdegree relatives （FDR） with colorectal cancer （CRC）. METHODS： This cross-sectional study was conducted from June 2000 to October 2002 at National Cancer Center Hospital East. Eligible patients undergoing initial total colonoscopy were surveyed regarding family history of CRC among FDR by a questionnaire prior to colonoscopic examinations. All endoscopic findings during colonoscopy were recorded and the macroscopic classification of the early stage neoplasm/cancer was classified into two types （0-IIc vs non 0-IIc）. Odds ratios （OR） and 95% confidence intervals （CI） were calculated by univariate and multivariate logistic regression to estimate the association between macroscopic features and clinicopathological data including gender, age, and family history of FDR with CRC. RESULTS： The OR of an association between family history of FDR with CRC and overall early stage neoplasm adjusted by gender and age was 1.85 （95% CI： 1.31-2.61, P = 0.0004）, that for non 0-IIc neoplasm was 1.71 （95% CI： 1.22-2.41, P = 0.0017） and for 0-IIc colorectal neoplasm was 2.78 （95% CI： 1.49-5.16, P = 0.0031）. CONCLUSION： Our study shows a significant association between a family history of FDR with CRC and 0-IIc colorectal neoplasm. When patients with a family history of FDR with CRC undergo colonoscopy, colonoscopists should check carefully for not only polypoid, but also depressed-type （0-IIc） lesions.展开更多
To screen out the rapeseed(Brassica napus) combinations that are suitable for the production of both oilseed and vegetable, we carried out a field experiment for 11 new combinations(hybrids) of rapeseed and then perfo...To screen out the rapeseed(Brassica napus) combinations that are suitable for the production of both oilseed and vegetable, we carried out a field experiment for 11 new combinations(hybrids) of rapeseed and then performed grey relation analysis and cluster analysis on 12 traits including the yield and quality of young stem,seed yield, and several agronomic traits after harvesting of young stem. The results showed that A11, A7, and A4 had higher main stalk yield than other combinations.The young stem/leaf ratios of A11, A5, A7, A4, A3, and A1 were in line with the quality requirements for young stem commodity. The soluble sugar content of A2,A8, and A10 was higher than that of CK(Fengyou 737), and the seed yields of A4,A3, A2, A1, A5, and A6 were higher than that of CK. The 11 rapeseed combinations were classified into 3 grades by grey relation analysis and cluster analysis. Two combinations, A4(Y20A×95C4R) and A11(3194A×09-5R), showed the weighted relation degrees higher than 0.95, which were clustered into grade I by cluster analysis. They had good agronomic traits and good performance as both oilseed and vegetable. A8, A5, A3, A7, A2, A10, A6, and A1 were clustered into grade Ⅱ and A9 into grade Ⅲ. In this study, the oilseed and vegetable dual-purpose rapeseed combinations were screened out based on grey relation analysis and cluster analysis,which can provide reference for the breeding of oilseed and vegetable dual-purpose rapeseed combinations.展开更多
Colorectal cancer(CRC) is now the third most common cause of cancer-related deaths in the world.According to the Iranian Annual National Cancer Registration Report,CRC is the third most common cancer in Iranian women ...Colorectal cancer(CRC) is now the third most common cause of cancer-related deaths in the world.According to the Iranian Annual National Cancer Registration Report,CRC is the third most common cancer in Iranian women and fifth in men.The incidence of CRC has increased during the last 25 years.CRC screening is an efficient way to reduce the burden of CRC through detection of precursor lesions of cancer or early stage cancer.Iran may benefit even more from screening programs.According to recent studies,the prevalence of colorectal adenoma in first degree relatives of patients diagnosed with CRC is significantly higher than in the average risk population.So,appropriate screening strategies,especially in relatives of patients,should be considered as the first step of CRC screening in Iran.展开更多
Eight hundred and ten pedigree members of 110 patients with Graves' disease were studied. In 700 first-egree relatives, inquiry of medical history, physical examination (including eyes, thyroid, heart rate, etc), ...Eight hundred and ten pedigree members of 110 patients with Graves' disease were studied. In 700 first-egree relatives, inquiry of medical history, physical examination (including eyes, thyroid, heart rate, etc), thyroid function tests (serum T3, T4 and TSH levels), determinations of thyroglobulin antibodies (TgAb) and thyroid microsomal antibodies (TmAb) were performed. For male (female) probands, the incidence of Graves' disease in male (female) first-degree relatives were investigated and their serum TgAb and TmAb were analysed. The incidence of these two kinds of autoantibodies in the male (female) first-egree relatives of familial and nonfamilial Graves' disease were analysed. Eighteen persons with positive TgAb and TmAb from 5 pedigrees had been followed up one year after initial determinations. Our results suggest that the positive rates of TgAb and TmAb in the first-egree relatives of Graves' disease were coincident with the incidence of Graves' disease, and the positive results of TgAb and TmAb in the first-egree relatives of Graves' disease may be an indicator of pre-raves' disease or pre-utoimmune thyroid diseases.展开更多
Objective To investigate the relationship between baseline serum uric acid and the severity of coronary artery disease(CAD)in the first-degree relatives or nonfirst-degree relatives of men with type 2 diabetes.Methods...Objective To investigate the relationship between baseline serum uric acid and the severity of coronary artery disease(CAD)in the first-degree relatives or nonfirst-degree relatives of men with type 2 diabetes.Methods Three hundred and eighty-one men with negative coronary angiography for the first time were divided into diabetes and non-diabetes groups and followed-up for展开更多
目的:应用Tandem mass tag(TMT)技术联合高内涵筛选(HCS)寻找潜在的胃癌相关基因。方法:利用TMT技术从胃癌及癌旁组织中筛选差异表达蛋白质,应用GO和KEGG数据库进行注释和信号通路富集并结合PubMed数据库结果,筛选出胃癌中未见或较少报...目的:应用Tandem mass tag(TMT)技术联合高内涵筛选(HCS)寻找潜在的胃癌相关基因。方法:利用TMT技术从胃癌及癌旁组织中筛选差异表达蛋白质,应用GO和KEGG数据库进行注释和信号通路富集并结合PubMed数据库结果,筛选出胃癌中未见或较少报道的上调目的基因。通过shRNA技术敲减基因,HCS技术比较敲减对细胞增殖的影响,筛选出肿瘤增殖相关基因并通过检测mRNA含量、克隆形成和CCK8进行验证。结果:通过TMT从胃癌和癌旁组织定量到差异表达蛋白1008个(上调649个,下调359个),25个目的基因敲减后HCS结果显示SF3B4敲减抑制细胞增殖,验证发现SF3B4是潜在的胃癌细胞增殖相关基因。结论:TMT技术结合HCS为肿瘤相关基因的筛选提供新的可能性。本研究提示SF3B4是潜在的胃癌增殖相关基因,为研究胃癌发生机制提供新线索。展开更多
基金Supported by the National Natural Science Foundation of China,No. 30370637
文摘AIM: To study the expression of cyclooxygenase-2 (COX-2)in human gastric cancer tissues and their paired adjacent mucosa, as well as mucosa from gastric antrum and corpus of the first-degree relatives of the recruited cancer patients.METHODS: The expression of COX-2 mRNA in 38 patients with gastric cancer and their 29 first-degree relatives and 18 healthy controls was assessed by the real time RT-PCR.The expression of COX-2 protein was determined by Western blot.RESULTS: A marked increase in COX-2 mRNA expression was found in 20 of 37 (54%) cancerous tissues compared to their respective paired normal mucosa (P＜0.001).Interestingly, increased COX-2 mRNA expression was also found in mucosa of the corpus (6/29) and antrum (13/29)of their first-degree relatives. Increased COX-2 mRNA expression was more frequently observed in the antrum biopsies from cancer patients than in the antrum biopsies from healthy controls (P＜0.05). In addition, 3 of 23 (13%)patients with atrophic mucosa and 6 of 35 (17%) patients with intestinal metaplasia showed increased COX-2 mRNA expression. Furthermore, COX-2 expression increased in H pylori-positive tissues, especially in antrum mucosa.CONCLUSION: Increased COX-2 expression is involved in gastric carcinogenesis, and may be necessary for maintenance of the malignant phenotype and contribute to Helicobacterpylori-associated malignant transformation.
文摘AIM:To investigate gastric cancer screening and preventive behaviors among the relatives of patients with gastric cancer[i.e.,gastric cancer relatives(GCRs)].METHODS:We examined the Korean National Health and Nutrition Examination Survey 2005(KNHANESⅢ) database and compared the gastric cancer screening and preventive behaviors of GCRs(n=261)with those of non-GCRs(n=454)and controls without a family history of cancer(n=2842).RESULTS:The GCRs were more likely to undergo gastric cancer screening compared with the control group(39.2%vs 32.3%,adjusted odds ratio:1.43,CI:1.05-1.95),although the absolute screening rate was low.Dietary patterns and smoking rates did not differ significantly between the groups,and a high proportion of GCRs reported inappropriate dietary habits(i.e.,approximately 95%consumed excessive sodium,30% were deficient in vitamin C,and 85%were deficient in dietary fiber).CONCLUSION:The gastric cancer screening and preventive behaviors of GCRs have yet to be improved.To increase awareness among GCRs,systematic family education programs should be implemented.
文摘AIM： TO investigate the correlation of depressed-type （0-IIc） colorectal neoplasm and family history of firstdegree relatives （FDR） with colorectal cancer （CRC）. METHODS： This cross-sectional study was conducted from June 2000 to October 2002 at National Cancer Center Hospital East. Eligible patients undergoing initial total colonoscopy were surveyed regarding family history of CRC among FDR by a questionnaire prior to colonoscopic examinations. All endoscopic findings during colonoscopy were recorded and the macroscopic classification of the early stage neoplasm/cancer was classified into two types （0-IIc vs non 0-IIc）. Odds ratios （OR） and 95% confidence intervals （CI） were calculated by univariate and multivariate logistic regression to estimate the association between macroscopic features and clinicopathological data including gender, age, and family history of FDR with CRC. RESULTS： The OR of an association between family history of FDR with CRC and overall early stage neoplasm adjusted by gender and age was 1.85 （95% CI： 1.31-2.61, P = 0.0004）, that for non 0-IIc neoplasm was 1.71 （95% CI： 1.22-2.41, P = 0.0017） and for 0-IIc colorectal neoplasm was 2.78 （95% CI： 1.49-5.16, P = 0.0031）. CONCLUSION： Our study shows a significant association between a family history of FDR with CRC and 0-IIc colorectal neoplasm. When patients with a family history of FDR with CRC undergo colonoscopy, colonoscopists should check carefully for not only polypoid, but also depressed-type （0-IIc） lesions.
文摘To screen out the rapeseed(Brassica napus) combinations that are suitable for the production of both oilseed and vegetable, we carried out a field experiment for 11 new combinations(hybrids) of rapeseed and then performed grey relation analysis and cluster analysis on 12 traits including the yield and quality of young stem,seed yield, and several agronomic traits after harvesting of young stem. The results showed that A11, A7, and A4 had higher main stalk yield than other combinations.The young stem/leaf ratios of A11, A5, A7, A4, A3, and A1 were in line with the quality requirements for young stem commodity. The soluble sugar content of A2,A8, and A10 was higher than that of CK(Fengyou 737), and the seed yields of A4,A3, A2, A1, A5, and A6 were higher than that of CK. The 11 rapeseed combinations were classified into 3 grades by grey relation analysis and cluster analysis. Two combinations, A4(Y20A×95C4R) and A11(3194A×09-5R), showed the weighted relation degrees higher than 0.95, which were clustered into grade I by cluster analysis. They had good agronomic traits and good performance as both oilseed and vegetable. A8, A5, A3, A7, A2, A10, A6, and A1 were clustered into grade Ⅱ and A9 into grade Ⅲ. In this study, the oilseed and vegetable dual-purpose rapeseed combinations were screened out based on grey relation analysis and cluster analysis,which can provide reference for the breeding of oilseed and vegetable dual-purpose rapeseed combinations.
文摘Colorectal cancer(CRC) is now the third most common cause of cancer-related deaths in the world.According to the Iranian Annual National Cancer Registration Report,CRC is the third most common cancer in Iranian women and fifth in men.The incidence of CRC has increased during the last 25 years.CRC screening is an efficient way to reduce the burden of CRC through detection of precursor lesions of cancer or early stage cancer.Iran may benefit even more from screening programs.According to recent studies,the prevalence of colorectal adenoma in first degree relatives of patients diagnosed with CRC is significantly higher than in the average risk population.So,appropriate screening strategies,especially in relatives of patients,should be considered as the first step of CRC screening in Iran.
文摘Eight hundred and ten pedigree members of 110 patients with Graves' disease were studied. In 700 first-egree relatives, inquiry of medical history, physical examination (including eyes, thyroid, heart rate, etc), thyroid function tests (serum T3, T4 and TSH levels), determinations of thyroglobulin antibodies (TgAb) and thyroid microsomal antibodies (TmAb) were performed. For male (female) probands, the incidence of Graves' disease in male (female) first-degree relatives were investigated and their serum TgAb and TmAb were analysed. The incidence of these two kinds of autoantibodies in the male (female) first-egree relatives of familial and nonfamilial Graves' disease were analysed. Eighteen persons with positive TgAb and TmAb from 5 pedigrees had been followed up one year after initial determinations. Our results suggest that the positive rates of TgAb and TmAb in the first-egree relatives of Graves' disease were coincident with the incidence of Graves' disease, and the positive results of TgAb and TmAb in the first-egree relatives of Graves' disease may be an indicator of pre-raves' disease or pre-utoimmune thyroid diseases.
文摘Objective To investigate the relationship between baseline serum uric acid and the severity of coronary artery disease(CAD)in the first-degree relatives or nonfirst-degree relatives of men with type 2 diabetes.Methods Three hundred and eighty-one men with negative coronary angiography for the first time were divided into diabetes and non-diabetes groups and followed-up for
文摘目的:应用Tandem mass tag(TMT)技术联合高内涵筛选(HCS)寻找潜在的胃癌相关基因。方法:利用TMT技术从胃癌及癌旁组织中筛选差异表达蛋白质,应用GO和KEGG数据库进行注释和信号通路富集并结合PubMed数据库结果,筛选出胃癌中未见或较少报道的上调目的基因。通过shRNA技术敲减基因,HCS技术比较敲减对细胞增殖的影响,筛选出肿瘤增殖相关基因并通过检测mRNA含量、克隆形成和CCK8进行验证。结果:通过TMT从胃癌和癌旁组织定量到差异表达蛋白1008个(上调649个,下调359个),25个目的基因敲减后HCS结果显示SF3B4敲减抑制细胞增殖,验证发现SF3B4是潜在的胃癌细胞增殖相关基因。结论:TMT技术结合HCS为肿瘤相关基因的筛选提供新的可能性。本研究提示SF3B4是潜在的胃癌增殖相关基因,为研究胃癌发生机制提供新线索。
