AIM To evaluate the effects of Helicobacterpylori infection and other environmental factorson the development of gastric cancer.METHODS A population-based case-controlstudy was conducted in Changle County,FujianProvin...AIM To evaluate the effects of Helicobacterpylori infection and other environmental factorson the development of gastric cancer.METHODS A population-based case-controlstudy was conducted in Changle County,FujianProvince.The primary gastric cancer cases werehistologically confirmed or diagnosed by surgerybetween,January 1996 and March 1998.Healthycontrols were randomly selected and matched byage,sex,and neighborhood of residence.Atotal of 101 pairs were included in the study.Specially trained interviewers conducted face-to-face interviews with the subjects according toa standardized questionnaire.Helicobacterpylori infections were measured by serum IgGantibody to Helicobacter pylori.ConditionalLogistic Regression analysis was used.RESULTS The presence of IgG antibody toHelicobacter pylori was 63.7% in studysubjects,56.0% in patients with cardiac cancer,and 60.5% in patients with non-cardiac gastriccancer.The risk factors of gastric cancer inChangle County were identified such as loweducational level[OR=3.864;95% confidenceinterval(95% CI)1.604-9.311],lowconsumption of fresh vegetables(OR=4.925;95%Cl 1.356-17.885),high intake of fish sauce(OR=10.587;95% Cl 2.821-39.738),unscheduled meals(OR=4.254;95%Cl 1.445- 12.552),and Helicobacter pylori infection(OR=3.453;95%Cl 0.901-13.224).CONCLUSION Helicobacter pylori infectionmay be important in the etiology of gastriccancer,but major risk factors other thanHelicobacter pylori are responsible for the highgastric morbidity in Changle County.展开更多
AIM To investigate the expression of multiplegenes and the behavior of cellular biology ingastric cancer（GC）and other gastric mucosallesions and their relations to Helicobacter pylori（H.pylori）infection,tumor stag...AIM To investigate the expression of multiplegenes and the behavior of cellular biology ingastric cancer（GC）and other gastric mucosallesions and their relations to Helicobacter pylori（H.pylori）infection,tumor staging andhistological subtypes.METHODS Three hundred and twenty-sevenspecimens of gastric mucosa obtained viaendoscopy or surgical resection,and ABCimmunohistochemical staining were used todetect the expression of p53,p16,Bcl-2 andCOX-2 proteins.H.pylori was determined byrapid urea test combined with pathologicalstaining or<sup>14</sup>C urea breath test.Cellular image analysis was performed in 66 patients withintestinal metaplasia（IM）and/or dysplasia（Dys）.In 30 of them,both cancer and theparacancerous tissues were obtained at the timeof surgery.Histological pattern,tumor staging,lymph node metastasis,grading ofdifferentiation and other clinical data werestudied in the medical records.RESULTS p16 expression of IM or Dys wassignificantly lower in positive H.pylori chronicatrophic gastritis（CAG）than those withnegative H.pylori（CAG:54.8% vs 88.0%,IM:34.4% vs 69.6%,Dys:23.8% vs 53.6%,allP【0.05）,Bcl-2 or COX-2 expression of IM orDys in positive H.pylori cases was significantlyhigher than that without H.pylori（Bcl-2:68.8%vs23.9%,90.5% vs 60.7%;COX-2:50.0% vs10.8%,61.8% vs 17.8%;all P【0.05）.Themean number of most parameters of cellularimage analysis in positive H.pylori group wassignificantly higher than that in negative H.pylori group（Ellipser:53±14,40±12μm,Area<sub>1</sub>:748±572,302±202 μm<sup>2</sup>,Area<sub>2</sub>:3050±1661,1681±1990 μm<sup>2</sup>,all P【0.05;Ellipseb:79±23,58±15 μm,Ratio<sub>1</sub>:22%±5%,13%±4%,Ratio<sub>2</sub>:79%±17%,53%±20%,all P【0.01）.There was significant correlation between Bcl-2and histologic pattern of gastric carcinoma,andbetween COX-2 and tumor staging or lymph nodemetastasis（Bcl-2:75.0% vs 16.7%;COX-2:76.0% vs 20.0%,79.2% vs 16.7%;allP【0.05）.CONCLUSION p1l6, Bcl-2, and COX-2 but not p53 gene may play a role 展开更多
Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially...Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially diagnosed or underwent surgical resection,which results in poor prognosis.Both the depth of tumor invasion and lymph node involvement are considered as the most important prognostic predictors of gastric cancer.Although extended lymphadenectomy was not considered a survival benefit procedure and was reported to be associated with high mortality and morbidity in two randomized controlled European trials,it showed significant superiority in terms of lower locoregional recurrence and disease related deaths compared to limited lymphadenectomy in a 15-year followup study.Almost all clinical investigators have reached a consensus that the predictive efficiency of the number of metastatic lymph nodes is far better than the extent of lymph node metastasis for the prognosis of gastric cancer worldwide,but other nodal metastatic classifications of gastric cancer have been proposed as alternatives to the number of metastatic lymph nodes for improving the predictive efficiency for patient prognosis.It is still controversial over whether the ratio between metastatic and examined lymph nodes is superior to the number of metastatic lymph nodes in prognostic evaluation of gastric cancer.Besides,the negative lymph node count has been increasingly recognized to be an important factor significantly associated with prognosis of gastric cancer.展开更多
基金the Natural Science Foundation of Fujian Province,China,No.K98031
文摘AIM To evaluate the effects of Helicobacterpylori infection and other environmental factorson the development of gastric cancer.METHODS A population-based case-controlstudy was conducted in Changle County,FujianProvince.The primary gastric cancer cases werehistologically confirmed or diagnosed by surgerybetween,January 1996 and March 1998.Healthycontrols were randomly selected and matched byage,sex,and neighborhood of residence.Atotal of 101 pairs were included in the study.Specially trained interviewers conducted face-to-face interviews with the subjects according toa standardized questionnaire.Helicobacterpylori infections were measured by serum IgGantibody to Helicobacter pylori.ConditionalLogistic Regression analysis was used.RESULTS The presence of IgG antibody toHelicobacter pylori was 63.7% in studysubjects,56.0% in patients with cardiac cancer,and 60.5% in patients with non-cardiac gastriccancer.The risk factors of gastric cancer inChangle County were identified such as loweducational level[OR=3.864;95% confidenceinterval(95% CI)1.604-9.311],lowconsumption of fresh vegetables(OR=4.925;95%Cl 1.356-17.885),high intake of fish sauce(OR=10.587;95% Cl 2.821-39.738),unscheduled meals(OR=4.254;95%Cl 1.445- 12.552),and Helicobacter pylori infection(OR=3.453;95%Cl 0.901-13.224).CONCLUSION Helicobacter pylori infectionmay be important in the etiology of gastriccancer,but major risk factors other thanHelicobacter pylori are responsible for the highgastric morbidity in Changle County.
基金the Natural Science Foundation of the Educational Committee of Jiangsu Province,No.125FA9608.
文摘AIM To investigate the expression of multiplegenes and the behavior of cellular biology ingastric cancer（GC）and other gastric mucosallesions and their relations to Helicobacter pylori（H.pylori）infection,tumor staging andhistological subtypes.METHODS Three hundred and twenty-sevenspecimens of gastric mucosa obtained viaendoscopy or surgical resection,and ABCimmunohistochemical staining were used todetect the expression of p53,p16,Bcl-2 andCOX-2 proteins.H.pylori was determined byrapid urea test combined with pathologicalstaining or<sup>14</sup>C urea breath test.Cellular image analysis was performed in 66 patients withintestinal metaplasia（IM）and/or dysplasia（Dys）.In 30 of them,both cancer and theparacancerous tissues were obtained at the timeof surgery.Histological pattern,tumor staging,lymph node metastasis,grading ofdifferentiation and other clinical data werestudied in the medical records.RESULTS p16 expression of IM or Dys wassignificantly lower in positive H.pylori chronicatrophic gastritis（CAG）than those withnegative H.pylori（CAG:54.8% vs 88.0%,IM:34.4% vs 69.6%,Dys:23.8% vs 53.6%,allP【0.05）,Bcl-2 or COX-2 expression of IM orDys in positive H.pylori cases was significantlyhigher than that without H.pylori（Bcl-2:68.8%vs23.9%,90.5% vs 60.7%;COX-2:50.0% vs10.8%,61.8% vs 17.8%;all P【0.05）.Themean number of most parameters of cellularimage analysis in positive H.pylori group wassignificantly higher than that in negative H.pylori group（Ellipser:53±14,40±12μm,Area<sub>1</sub>:748±572,302±202 μm<sup>2</sup>,Area<sub>2</sub>:3050±1661,1681±1990 μm<sup>2</sup>,all P【0.05;Ellipseb:79±23,58±15 μm,Ratio<sub>1</sub>:22%±5%,13%±4%,Ratio<sub>2</sub>:79%±17%,53%±20%,all P【0.01）.There was significant correlation between Bcl-2and histologic pattern of gastric carcinoma,andbetween COX-2 and tumor staging or lymph nodemetastasis（Bcl-2:75.0% vs 16.7%;COX-2:76.0% vs 20.0%,79.2% vs 16.7%;allP【0.05）.CONCLUSION p1l6, Bcl-2, and COX-2 but not p53 gene may play a role
基金Supported by Anticancer Major Projects of Tianjin Municipal Science and Technology Commission,No.12ZCDZSY16400National Basic Research Program of China(973 Program),No.2010CB529301Science Foundation of Tianjin Medical Univer-sity,No.2012KYM01
文摘Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially diagnosed or underwent surgical resection,which results in poor prognosis.Both the depth of tumor invasion and lymph node involvement are considered as the most important prognostic predictors of gastric cancer.Although extended lymphadenectomy was not considered a survival benefit procedure and was reported to be associated with high mortality and morbidity in two randomized controlled European trials,it showed significant superiority in terms of lower locoregional recurrence and disease related deaths compared to limited lymphadenectomy in a 15-year followup study.Almost all clinical investigators have reached a consensus that the predictive efficiency of the number of metastatic lymph nodes is far better than the extent of lymph node metastasis for the prognosis of gastric cancer worldwide,but other nodal metastatic classifications of gastric cancer have been proposed as alternatives to the number of metastatic lymph nodes for improving the predictive efficiency for patient prognosis.It is still controversial over whether the ratio between metastatic and examined lymph nodes is superior to the number of metastatic lymph nodes in prognostic evaluation of gastric cancer.Besides,the negative lymph node count has been increasingly recognized to be an important factor significantly associated with prognosis of gastric cancer.
