Esophageal cancer(EsC)is one of the least studied and deadliest cancers worldwide because of its extremely aggressive nature and poor survival rate.It ranks sixth among all cancers in mortality.In retrospective studie...Esophageal cancer(EsC)is one of the least studied and deadliest cancers worldwide because of its extremely aggressive nature and poor survival rate.It ranks sixth among all cancers in mortality.In retrospective studies of EsC,smoking,hot tea drinking,red meat consumption,poor oral health,low intake of fresh fruit and vegetables,and low socioeconomic status have been associated with a higher risk of esophageal squamous cell carcinoma.Barrett’s esophagus is clearly recognized as a risk factor for EsC,and dysplasia remains the only factor useful for identifying patients at increased risk,for the development of esophageal adenocarcinoma in clinical practice.Here,we investigated the epidemiologic patterns and causes of EsC.Using population based cancer data from the Surveillance,Epidemiology and End Results Program of the United States;we generated the most up-to-date stage distribution and 5-year relative survival by stage at diagnosis for 1998-2009.Special note should be given to the fact that esophageal cancer,mainly adenocarcinoma,is one of the very few cancers that is contributing to increasing death rates(20%)among males in the United States.To further explore the mechanism of development of EsC will hopefully decrease the incidence of EsC and improve outcomes.展开更多
Pro-inflammatory cytokines are produced in the gastric mucosa by inflammatory cells activated by chronic Helicobacter pylori (H. pylori) infection. Polymorphisms of these cytokine genes are associated with individual ...Pro-inflammatory cytokines are produced in the gastric mucosa by inflammatory cells activated by chronic Helicobacter pylori (H. pylori) infection. Polymorphisms of these cytokine genes are associated with individual differences in gastric mucosal cytokine mRNA level, which result in differences in gastric mucosal inflammation, acid inhibition and gastroduodenal disease risk in response to H. pylori infection. Although polymorphisms of interleukin (IL)-1B, IL-1RN and TNF-A have been reported to relate well with gastric cancer and peptic ulcer risk, those of IL-2, IL-4, IL-6 and IL-8 genes are unclear. In combined analyses using data from previous studies, we found that the risk of gastric non-cardia cancer development was significantly associated with IL-4-168 C allele (OR: 0.81, 95% CI: 0.69-1.00) and IL-4-590 T allele carrier status (0.61, 0.53-0.73), and IL-6-174 G/G genotype (2<Abstract>Pro-inflammatory cytokines are produced in the gastric mucosa by inflammatory cells activated by chronic Helicobacter pylori (H. pylori) infection. Polymorphisms of these cytokine genes are associated with individual differences in gastric mucosal cytokine mRNA level, which result in differences in gastric mucosal inflammation, acid inhibition and gastroduodenal disease risk in response to H. pylori infection. Although polymorphisms of interleukin (IL)-1B, IL-1RN and TNF-A have been reported to relate well with gastric cancer and peptic ulcer risk, those of IL-2, IL-4, IL-6 and IL-8 genes are unclear. In combined analyses using data from previous stud- ies, we found that the risk of gastric non-cardia cancer development was significantly associated with IL-4-168 C allele (OR: 0.81, 95% CI: 0.69-1.00) and IL-4-590 T allele carrier status (0.61, 0.53-0.73), and IL-6-174 G/G genotype (2.02, 1.31-3.10). In peptic ulcer development, IL-2-330 G and IL-4-590 T allele carriers had a significantly decreased risk (0.37, 0.27-0.50 and 0.58, 0.34-0.99, respectively). Moreover, IL-2, IL-4, IL-6 and IL-8 gene genotypes prevalence differs am展开更多
目的分析湖南省湘潭市女性5,10-亚甲基四氢叶酸还原酶(MTHFR)C677T、A1298C及甲硫氨酸合成酶还原酶(MTRR)A66G位点基因多态性的分布特征,并分析其多态性与血浆同型半胱氨酸(Hcy)水平的关系。方法以湘潭市1 701例女性为研究对象,检测其MT...目的分析湖南省湘潭市女性5,10-亚甲基四氢叶酸还原酶(MTHFR)C677T、A1298C及甲硫氨酸合成酶还原酶(MTRR)A66G位点基因多态性的分布特征,并分析其多态性与血浆同型半胱氨酸(Hcy)水平的关系。方法以湘潭市1 701例女性为研究对象,检测其MTHFR C677T、A1298C和MTRR A66G位点基因多态性,并对其中110例孕期女性检测其血浆Hcy水平。统计分析本地区基因多态性的分布特征,并与淄博、郑州、烟台、镇江、松滋、惠州、琼海等地区进行比较;分析多态性与血浆Hcy水平的关系。结果湘潭市女性的MTHFR C677T位点TT纯合突变基因型频率为12.6%,高于惠州(10.9%)、琼海(6.1%),低于淄博(43.6%)、郑州(36.8%)、烟台(32.2%)、镇江(21.8%),差异均有统计学意义。与松滋相比差异无统计学意义。MTHFR A1298C位点CC纯合突变基因型频率为4.8%,低于琼海(7.1%)、高于淄博(1.4%)、郑州(2.4%)、烟台(1.8%)、镇江(3.5%)、松滋(2.6%),差异均有统计学意义。MTRR A66G位点GG纯合突变基因型频率为6.8%,高于淄博(4.8%),低于琼海(9.3%),差异有统计学意义。血浆Hcy浓度与MTHFR C677T位点基因型多态性有关,TT型人群Hcy浓度高于CT型人群和CC型人群(μmol/L:8.52±2.01 vs 5.94±1.47 vs 5.71±0.18);血浆Hcy浓度与MTHFR A1298C位点基因型多态性有关,CC型人群Hcy浓度高于AA型人群和AC型人群(μmol/L:9.83±2.26 vs 6.35±2.13 vs 5.55±1.75);血浆Hcy浓度与MTRR A66G位点基因型无关。结论湘潭市女性MTHFR和MTRR基因多态性频率不同于其他地区,具有地域特异性。MTHFR C677T、A1298C位点多态性与Hcy水平有关。展开更多
文摘Esophageal cancer(EsC)is one of the least studied and deadliest cancers worldwide because of its extremely aggressive nature and poor survival rate.It ranks sixth among all cancers in mortality.In retrospective studies of EsC,smoking,hot tea drinking,red meat consumption,poor oral health,low intake of fresh fruit and vegetables,and low socioeconomic status have been associated with a higher risk of esophageal squamous cell carcinoma.Barrett’s esophagus is clearly recognized as a risk factor for EsC,and dysplasia remains the only factor useful for identifying patients at increased risk,for the development of esophageal adenocarcinoma in clinical practice.Here,we investigated the epidemiologic patterns and causes of EsC.Using population based cancer data from the Surveillance,Epidemiology and End Results Program of the United States;we generated the most up-to-date stage distribution and 5-year relative survival by stage at diagnosis for 1998-2009.Special note should be given to the fact that esophageal cancer,mainly adenocarcinoma,is one of the very few cancers that is contributing to increasing death rates(20%)among males in the United States.To further explore the mechanism of development of EsC will hopefully decrease the incidence of EsC and improve outcomes.
文摘Pro-inflammatory cytokines are produced in the gastric mucosa by inflammatory cells activated by chronic Helicobacter pylori (H. pylori) infection. Polymorphisms of these cytokine genes are associated with individual differences in gastric mucosal cytokine mRNA level, which result in differences in gastric mucosal inflammation, acid inhibition and gastroduodenal disease risk in response to H. pylori infection. Although polymorphisms of interleukin (IL)-1B, IL-1RN and TNF-A have been reported to relate well with gastric cancer and peptic ulcer risk, those of IL-2, IL-4, IL-6 and IL-8 genes are unclear. In combined analyses using data from previous studies, we found that the risk of gastric non-cardia cancer development was significantly associated with IL-4-168 C allele (OR: 0.81, 95% CI: 0.69-1.00) and IL-4-590 T allele carrier status (0.61, 0.53-0.73), and IL-6-174 G/G genotype (2<Abstract>Pro-inflammatory cytokines are produced in the gastric mucosa by inflammatory cells activated by chronic Helicobacter pylori (H. pylori) infection. Polymorphisms of these cytokine genes are associated with individual differences in gastric mucosal cytokine mRNA level, which result in differences in gastric mucosal inflammation, acid inhibition and gastroduodenal disease risk in response to H. pylori infection. Although polymorphisms of interleukin (IL)-1B, IL-1RN and TNF-A have been reported to relate well with gastric cancer and peptic ulcer risk, those of IL-2, IL-4, IL-6 and IL-8 genes are unclear. In combined analyses using data from previous stud- ies, we found that the risk of gastric non-cardia cancer development was significantly associated with IL-4-168 C allele (OR: 0.81, 95% CI: 0.69-1.00) and IL-4-590 T allele carrier status (0.61, 0.53-0.73), and IL-6-174 G/G genotype (2.02, 1.31-3.10). In peptic ulcer development, IL-2-330 G and IL-4-590 T allele carriers had a significantly decreased risk (0.37, 0.27-0.50 and 0.58, 0.34-0.99, respectively). Moreover, IL-2, IL-4, IL-6 and IL-8 gene genotypes prevalence differs am
文摘目的分析湖南省湘潭市女性5,10-亚甲基四氢叶酸还原酶(MTHFR)C677T、A1298C及甲硫氨酸合成酶还原酶(MTRR)A66G位点基因多态性的分布特征,并分析其多态性与血浆同型半胱氨酸(Hcy)水平的关系。方法以湘潭市1 701例女性为研究对象,检测其MTHFR C677T、A1298C和MTRR A66G位点基因多态性,并对其中110例孕期女性检测其血浆Hcy水平。统计分析本地区基因多态性的分布特征,并与淄博、郑州、烟台、镇江、松滋、惠州、琼海等地区进行比较;分析多态性与血浆Hcy水平的关系。结果湘潭市女性的MTHFR C677T位点TT纯合突变基因型频率为12.6%,高于惠州(10.9%)、琼海(6.1%),低于淄博(43.6%)、郑州(36.8%)、烟台(32.2%)、镇江(21.8%),差异均有统计学意义。与松滋相比差异无统计学意义。MTHFR A1298C位点CC纯合突变基因型频率为4.8%,低于琼海(7.1%)、高于淄博(1.4%)、郑州(2.4%)、烟台(1.8%)、镇江(3.5%)、松滋(2.6%),差异均有统计学意义。MTRR A66G位点GG纯合突变基因型频率为6.8%,高于淄博(4.8%),低于琼海(9.3%),差异有统计学意义。血浆Hcy浓度与MTHFR C677T位点基因型多态性有关,TT型人群Hcy浓度高于CT型人群和CC型人群(μmol/L:8.52±2.01 vs 5.94±1.47 vs 5.71±0.18);血浆Hcy浓度与MTHFR A1298C位点基因型多态性有关,CC型人群Hcy浓度高于AA型人群和AC型人群(μmol/L:9.83±2.26 vs 6.35±2.13 vs 5.55±1.75);血浆Hcy浓度与MTRR A66G位点基因型无关。结论湘潭市女性MTHFR和MTRR基因多态性频率不同于其他地区,具有地域特异性。MTHFR C677T、A1298C位点多态性与Hcy水平有关。
