AIM： To explore the expression of phosphatase and tensin homolog deleted on chromosome ten （PTEN） in liver of athymic mice with hepatocellular carcinoma （HCC） and the effect of Fuzheng Jiedu Decoction （FJD）. ME...AIM： To explore the expression of phosphatase and tensin homolog deleted on chromosome ten （PTEN） in liver of athymic mice with hepatocellular carcinoma （HCC） and the effect of Fuzheng Jiedu Decoction （FJD）. METHODS： Forty eight male BALB/c athymic mice models were built by Bel-7402 with an indirect method. After 24 h of postoperation, the 48 athymic mice were distributed randomly into 4 groups： A, B, C, D, each group had 12 athymic mice. Group A were were treated by intragastric administration with FT207 （Tegafur） for 4 wk. Group B, C and D were treated by intragastric administration with FJD （complex prescription of Chinese crude drug） that had been delegated into 3 kinds of density as the low, middle, and high for 4 wk. At last, athymic mice were put to death, live time, volume of tumors, exponent of tumors and the tumor metastasis in livers were observed; and PTEN was detected in hepatic tissue, latero-cancer tissue and cancer tissue by immunohistochemistry. RESULTS： Four weeks later, the total survival rate in treatment group （A ＋ B ＋ C） was 50% and higher than the control group （0%） treated by FT207, （P 〈 0.01）. The survival rate in group A, B, C was higher than in group D, and except group A with D, there was significant differentces （Fisher＇s Exact Test P = 0.05 or 0.01）. And no differences were observed between the treatment groups and the control group in volume of tumors and exponent of tumors （P 〉 0.05）. Tumor metastasis in livers of the treatment group was less than the controls （Fisher＇s Exact Test, P = 0.021）. The result of immunohistochemistry showed that the intensity of PTEN in latero-cancer tissue was the highest, and then the hepatic tissue, the lowest was cancer tissue （Kruskal- Wallis test, X^2 = 60.67, P = 0.000）. It also showed that the intensity of PTEN in treatment groups （A, B, C） was higher than the control group （D） （F = 5.90, P = 0.002 in hepatic tissue and F = 15.99, P = 0.000 in latero-cancer tissue and X^2 = 26.08, P = 0.000 in cancer tissue）, and group B is the highest in the treatment groups （P 〈 0.05, r = 0.01. respectively）. However, there was no significant statistic difference between group A and group C （P 〉 0.05）. CONCLUSION： FJD can prolong the survival time and decrease tumor metastasis in livers of these experimental mice. Mechanisms of FJD healing HCC may partially be explained by enhancing the expression of PTEN in liver.展开更多
An animal model mimicking human gastric cancer by gastric wall implantation technique in athymic nude mice was reported. Two human gastric cancer cell lines. MKN-45 and MKN-28, were used in this study. All animals wit...An animal model mimicking human gastric cancer by gastric wall implantation technique in athymic nude mice was reported. Two human gastric cancer cell lines. MKN-45 and MKN-28, were used in this study. All animals with gastric wall implantation of cancer cells of these two cell lines developed grossly visible gastric tumors after 3-4 weeks of implantation. Histopathological examination showed that tumors prirnarily grew at serosal side of stomach, and progressively invaded the gastric mucosa, but none showed metastasis in this study. All tumor-bearing animals died within 5-8 weeks after implantation. These results indicated that gastric wall of nude mice provided a good soil for growth and propagation of human gastric cancer cells. The model was useful for in vivo study on biological behavior of various types of human gastric cancers.展开更多
基金Supported by the Technological Planning Program of Guangdong Province China, No. 2005B33001040 Programs of Bureau of Traditional Chinese Medicine of Guangdong Province, No. 1040056 and 301014
文摘AIM： To explore the expression of phosphatase and tensin homolog deleted on chromosome ten （PTEN） in liver of athymic mice with hepatocellular carcinoma （HCC） and the effect of Fuzheng Jiedu Decoction （FJD）. METHODS： Forty eight male BALB/c athymic mice models were built by Bel-7402 with an indirect method. After 24 h of postoperation, the 48 athymic mice were distributed randomly into 4 groups： A, B, C, D, each group had 12 athymic mice. Group A were were treated by intragastric administration with FT207 （Tegafur） for 4 wk. Group B, C and D were treated by intragastric administration with FJD （complex prescription of Chinese crude drug） that had been delegated into 3 kinds of density as the low, middle, and high for 4 wk. At last, athymic mice were put to death, live time, volume of tumors, exponent of tumors and the tumor metastasis in livers were observed; and PTEN was detected in hepatic tissue, latero-cancer tissue and cancer tissue by immunohistochemistry. RESULTS： Four weeks later, the total survival rate in treatment group （A ＋ B ＋ C） was 50% and higher than the control group （0%） treated by FT207, （P 〈 0.01）. The survival rate in group A, B, C was higher than in group D, and except group A with D, there was significant differentces （Fisher＇s Exact Test P = 0.05 or 0.01）. And no differences were observed between the treatment groups and the control group in volume of tumors and exponent of tumors （P 〉 0.05）. Tumor metastasis in livers of the treatment group was less than the controls （Fisher＇s Exact Test, P = 0.021）. The result of immunohistochemistry showed that the intensity of PTEN in latero-cancer tissue was the highest, and then the hepatic tissue, the lowest was cancer tissue （Kruskal- Wallis test, X^2 = 60.67, P = 0.000）. It also showed that the intensity of PTEN in treatment groups （A, B, C） was higher than the control group （D） （F = 5.90, P = 0.002 in hepatic tissue and F = 15.99, P = 0.000 in latero-cancer tissue and X^2 = 26.08, P = 0.000 in cancer tissue）, and group B is the highest in the treatment groups （P 〈 0.05, r = 0.01. respectively）. However, there was no significant statistic difference between group A and group C （P 〉 0.05）. CONCLUSION： FJD can prolong the survival time and decrease tumor metastasis in livers of these experimental mice. Mechanisms of FJD healing HCC may partially be explained by enhancing the expression of PTEN in liver.
基金This work was supported by grant from the Chinese National Natural Science Foundation
文摘An animal model mimicking human gastric cancer by gastric wall implantation technique in athymic nude mice was reported. Two human gastric cancer cell lines. MKN-45 and MKN-28, were used in this study. All animals with gastric wall implantation of cancer cells of these two cell lines developed grossly visible gastric tumors after 3-4 weeks of implantation. Histopathological examination showed that tumors prirnarily grew at serosal side of stomach, and progressively invaded the gastric mucosa, but none showed metastasis in this study. All tumor-bearing animals died within 5-8 weeks after implantation. These results indicated that gastric wall of nude mice provided a good soil for growth and propagation of human gastric cancer cells. The model was useful for in vivo study on biological behavior of various types of human gastric cancers.
