Soil samples were collected from Hechuan wetland and digested by the national standard method. The contents of Pb, Cd, Cr, Cu, Zn and Mn in the wetland soil were determined, and the degree of soil heavy metal pollutio...Soil samples were collected from Hechuan wetland and digested by the national standard method. The contents of Pb, Cd, Cr, Cu, Zn and Mn in the wetland soil were determined, and the degree of soil heavy metal pollution was estimated by single-factor pollution index, root-mean-square comprehensive pollution index and geo-accumulation pollution index methods. The results showed that the wetland in the sampling range was seriously polluted by heavy metals, mainly by heavy metal Cd, while the effects from other heavy metals were relatively less.展开更多
Objective： To research the contributions of p130Cas and PTEN signal molecules to the carcinogenesis of gastric carcinoma and the relationship between them. Methods： Detecting proteins of p130Cas, PTEN and PTEN mRNA ...Objective： To research the contributions of p130Cas and PTEN signal molecules to the carcinogenesis of gastric carcinoma and the relationship between them. Methods： Detecting proteins of p130Cas, PTEN and PTEN mRNA of 76 cases normal gastric mucosa and 112 cases gastric carcinoma by immunohistochemistry EnVision method and molecular hybridization in situ method respectively. Detecting PTEN genetic mutation of 30 cases normal gastric mucosa, 7 cases early gastric cancer and 30 cases progressive gastric cancer by PCR-SSCP. Results： The expression of p130Cas protein of gastric carcinoma increased significantly than that of normal gastric mucosa （P 〈 0.05）. Opposite to above, the expression of PTEN protein of gastric carcinoma group was significantly lower than that of normal gastric rnucosa group （P 〈 0.05）. The expression of PTEN mRNA of gastric carcinoma group decreased obviously than normal gastric mucosa group （P 〈 0.001）. Only one case exon 5 and one case exon 8 of PTEN appeared gene mutation of progressive gastric carcinoma group, the difference has no significance compared with normal gastric mucosa group and early gastric cancer group. Conclusion： The signaling molecules p130Cas and PTEN play an important role in the carcinogenesis of gastric carcinoma, and p130Cas plays the part of promoter, oppositely, maybe PTEN can inhibit it.展开更多
Objective: To research the contribution of ILK and PTEN to the carcinogenesis and development of gastric carcinoma and the relation with anti-oncogene PTEN. Methods: ILK and PTEN proteins, PTEN mRNA of 76 cases of nor...Objective: To research the contribution of ILK and PTEN to the carcinogenesis and development of gastric carcinoma and the relation with anti-oncogene PTEN. Methods: ILK and PTEN proteins, PTEN mRNA of 76 cases of normal gastric mucous and 112 cases of gastric carcinoma were detected by immunohistochemistry method and in situ hybridization. Results: The expression of ILK, PTEN protein in gastric carcinoma group and normal gastric mucosa group, muscular layer invasive group and no muscular layer invasive group, lymphatic metastasis group and non-lymphatic metastasis group were all statistical significance (P < 0.05 or P< 0.01). The expression of PTEN mRNA of gastric carcinoma group was lower than that of normal gastric mucosa group (P < 0.01). The expression of ILK and PTEN protein had negative correlation (r = -0.347, P < 0.01). Conclusion: ILK protein increasing and PTEN protein decreasing have closely relation with the genesis and development of gastric carcinoma, and controlling them may become a new treating target gastric cancer.展开更多
基金Supported by Special Fund for Scientific Research from the Education Department of Shaanxi Province(14JK1253)Key Scientific Research Fund of Weinan Normal University(16YKF001)Characteristics Discipline Project of Weinan Normal University(14TSXK04)~~
文摘Soil samples were collected from Hechuan wetland and digested by the national standard method. The contents of Pb, Cd, Cr, Cu, Zn and Mn in the wetland soil were determined, and the degree of soil heavy metal pollution was estimated by single-factor pollution index, root-mean-square comprehensive pollution index and geo-accumulation pollution index methods. The results showed that the wetland in the sampling range was seriously polluted by heavy metals, mainly by heavy metal Cd, while the effects from other heavy metals were relatively less.
基金Supported by a grant from Sanitary Science and Technological Development Foundation of Shandong Province (No. 2003HW015)
文摘Objective： To research the contributions of p130Cas and PTEN signal molecules to the carcinogenesis of gastric carcinoma and the relationship between them. Methods： Detecting proteins of p130Cas, PTEN and PTEN mRNA of 76 cases normal gastric mucosa and 112 cases gastric carcinoma by immunohistochemistry EnVision method and molecular hybridization in situ method respectively. Detecting PTEN genetic mutation of 30 cases normal gastric mucosa, 7 cases early gastric cancer and 30 cases progressive gastric cancer by PCR-SSCP. Results： The expression of p130Cas protein of gastric carcinoma increased significantly than that of normal gastric mucosa （P 〈 0.05）. Opposite to above, the expression of PTEN protein of gastric carcinoma group was significantly lower than that of normal gastric rnucosa group （P 〈 0.05）. The expression of PTEN mRNA of gastric carcinoma group decreased obviously than normal gastric mucosa group （P 〈 0.001）. Only one case exon 5 and one case exon 8 of PTEN appeared gene mutation of progressive gastric carcinoma group, the difference has no significance compared with normal gastric mucosa group and early gastric cancer group. Conclusion： The signaling molecules p130Cas and PTEN play an important role in the carcinogenesis of gastric carcinoma, and p130Cas plays the part of promoter, oppositely, maybe PTEN can inhibit it.
基金Supported by Sanitary Science and Technological Development Foundation of Shandong Province (2003HW015).
文摘Objective: To research the contribution of ILK and PTEN to the carcinogenesis and development of gastric carcinoma and the relation with anti-oncogene PTEN. Methods: ILK and PTEN proteins, PTEN mRNA of 76 cases of normal gastric mucous and 112 cases of gastric carcinoma were detected by immunohistochemistry method and in situ hybridization. Results: The expression of ILK, PTEN protein in gastric carcinoma group and normal gastric mucosa group, muscular layer invasive group and no muscular layer invasive group, lymphatic metastasis group and non-lymphatic metastasis group were all statistical significance (P < 0.05 or P< 0.01). The expression of PTEN mRNA of gastric carcinoma group was lower than that of normal gastric mucosa group (P < 0.01). The expression of ILK and PTEN protein had negative correlation (r = -0.347, P < 0.01). Conclusion: ILK protein increasing and PTEN protein decreasing have closely relation with the genesis and development of gastric carcinoma, and controlling them may become a new treating target gastric cancer.
