BACKGROUND: Gallbladder carcinoma is a highly lethal and aggressive disease with early metastasis, strong invasion and poor prognosis. Most patients with this disease are at the advanced and un-resectable stage and sh...BACKGROUND: Gallbladder carcinoma is a highly lethal and aggressive disease with early metastasis, strong invasion and poor prognosis. Most patients with this disease are at the advanced and un-resectable stage and should be consi- dered for palliative treatment such as chemotherapy and ra- diotherapy. Unfortunately, reports of chemotherapy and radiotherapy for gallbladder carcinoma are disappointing. We investigated the influence of norcantharidin (NCTD) on proliferation, proliferation-related gene proteins PCNA and Ki-67 of human gallbladder carcinoma GBC-SD cells in vitro. METHODS: GBC-SD cell lines of human gallbladder carci- noma were cultured by the cell culture technique. The ex- periment was divided into NCTD group and control group. The tetrazolium-based colorimetric assay was used to evaluate cell growth. The streptavidin-biotin complex method was used to determine the expressions of prolifera- tion-related gene proteins PCNA and Ki-67 of human gall- bladder carcinoma GBC-SD cells. RESULTS: NCTD inhibited the growth and proliferation of GBC-SD cells from 10 mg/L or after 6 hours in a dose- and time-dependent manner, with the IC50 value of 56.18 μg/ ml at 48 hours. After treatment with NCTD, the expression of PCNA (0.932 ±0.031 vs. 0.318 ±0.023, P<0.001) and Ki-67 (0.964 ±0.092 vs. 0.297 ±0.018, P<0.001) proteins were decreased significantly. CONCLUSION: NCTD inhibits the proliferation of human gallbladder carcinoma GBC-SD cells in vitro and the expres- sion of their proliferation-related gene proteins PCNA and Ki-67.展开更多
Summary: The expression of DNA ploidy, the cell cycle and Ki67 antigen in nasopharyngeal carcinoma (NPC) were studied and their relationship with the clinical biological behaviors and prognosis of NPC was evaluated. B...Summary: The expression of DNA ploidy, the cell cycle and Ki67 antigen in nasopharyngeal carcinoma (NPC) were studied and their relationship with the clinical biological behaviors and prognosis of NPC was evaluated. Biopsied specimens of NPC were made into cell suspension. By using cytometric double labeling Ki67 and DNA method, the expression of DNA ploidy, the cell cycle and Ki67 antigen were analyzed. The patients were followed-up for about 3 years and the relationship between the above-mentioned parameters and the clinical biological behavior and prognosis of NPC were evaluated. Of the 62 cases of NPC, the DNA aneuploid accounted for 29.03 %. The S phase cells accounted for 0 to 54 % in the cell cycle and the positive expression of Ki67 ranged from 0 to 52 %. There were 40 cases of LPI (64.5 %) including 15 negative cases and 22 cases of HPI (35 5 %) respectively. The DNA anueploid content was positively related to the S phase cells. The patients having a low expression of Ki67 or DNA aneuploid in tumor cells were not sensitive to chemotherapy, liable to metastasis to distant organs and had a poor prognosis, while Ki67 showed no correlation with DNA ploidy and the cell cycle. It was suggested that DNA ploidy and Ki67 could be used as an independent and objective marker to evaluate the radiosensitivity and prognosis of NPC.展开更多
目的探讨柠檬酸盐和EDTA缓冲液对弥漫性大B细胞淋巴瘤(diffuse large B-cell lymphomas,DLBCL)中Ki-67和bcl-2抗原修复的比较。方法运用高压锅热抗原修复法,选择柠檬酸盐和EDTA两种缓冲液同时进行抗原修复,比较了78例弥漫性大B细胞淋巴...目的探讨柠檬酸盐和EDTA缓冲液对弥漫性大B细胞淋巴瘤(diffuse large B-cell lymphomas,DLBCL)中Ki-67和bcl-2抗原修复的比较。方法运用高压锅热抗原修复法,选择柠檬酸盐和EDTA两种缓冲液同时进行抗原修复,比较了78例弥漫性大B细胞淋巴瘤Ki-67和43例DLBCL bcl-2的免疫组化染色应用效果。结果免疫组化染色采用EDTA与柠檬酸盐缓冲液相比,Ki-67指数78例中有76例明显提高,两者差异有统计学意义(P<0·01);bcl-2染色43例中有13例表达明显提高,两者差异有统计学意义(P<0·01)。结论在实际免疫组化染色中,EDTA缓冲液较柠檬酸盐缓冲液能极大地提高弥漫性大B细胞淋巴瘤的Ki-67和bcl-2抗原的表达。展开更多
文摘BACKGROUND: Gallbladder carcinoma is a highly lethal and aggressive disease with early metastasis, strong invasion and poor prognosis. Most patients with this disease are at the advanced and un-resectable stage and should be consi- dered for palliative treatment such as chemotherapy and ra- diotherapy. Unfortunately, reports of chemotherapy and radiotherapy for gallbladder carcinoma are disappointing. We investigated the influence of norcantharidin (NCTD) on proliferation, proliferation-related gene proteins PCNA and Ki-67 of human gallbladder carcinoma GBC-SD cells in vitro. METHODS: GBC-SD cell lines of human gallbladder carci- noma were cultured by the cell culture technique. The ex- periment was divided into NCTD group and control group. The tetrazolium-based colorimetric assay was used to evaluate cell growth. The streptavidin-biotin complex method was used to determine the expressions of prolifera- tion-related gene proteins PCNA and Ki-67 of human gall- bladder carcinoma GBC-SD cells. RESULTS: NCTD inhibited the growth and proliferation of GBC-SD cells from 10 mg/L or after 6 hours in a dose- and time-dependent manner, with the IC50 value of 56.18 μg/ ml at 48 hours. After treatment with NCTD, the expression of PCNA (0.932 ±0.031 vs. 0.318 ±0.023, P<0.001) and Ki-67 (0.964 ±0.092 vs. 0.297 ±0.018, P<0.001) proteins were decreased significantly. CONCLUSION: NCTD inhibits the proliferation of human gallbladder carcinoma GBC-SD cells in vitro and the expres- sion of their proliferation-related gene proteins PCNA and Ki-67.
文摘Summary: The expression of DNA ploidy, the cell cycle and Ki67 antigen in nasopharyngeal carcinoma (NPC) were studied and their relationship with the clinical biological behaviors and prognosis of NPC was evaluated. Biopsied specimens of NPC were made into cell suspension. By using cytometric double labeling Ki67 and DNA method, the expression of DNA ploidy, the cell cycle and Ki67 antigen were analyzed. The patients were followed-up for about 3 years and the relationship between the above-mentioned parameters and the clinical biological behavior and prognosis of NPC were evaluated. Of the 62 cases of NPC, the DNA aneuploid accounted for 29.03 %. The S phase cells accounted for 0 to 54 % in the cell cycle and the positive expression of Ki67 ranged from 0 to 52 %. There were 40 cases of LPI (64.5 %) including 15 negative cases and 22 cases of HPI (35 5 %) respectively. The DNA anueploid content was positively related to the S phase cells. The patients having a low expression of Ki67 or DNA aneuploid in tumor cells were not sensitive to chemotherapy, liable to metastasis to distant organs and had a poor prognosis, while Ki67 showed no correlation with DNA ploidy and the cell cycle. It was suggested that DNA ploidy and Ki67 could be used as an independent and objective marker to evaluate the radiosensitivity and prognosis of NPC.
文摘目的探讨柠檬酸盐和EDTA缓冲液对弥漫性大B细胞淋巴瘤(diffuse large B-cell lymphomas,DLBCL)中Ki-67和bcl-2抗原修复的比较。方法运用高压锅热抗原修复法,选择柠檬酸盐和EDTA两种缓冲液同时进行抗原修复,比较了78例弥漫性大B细胞淋巴瘤Ki-67和43例DLBCL bcl-2的免疫组化染色应用效果。结果免疫组化染色采用EDTA与柠檬酸盐缓冲液相比,Ki-67指数78例中有76例明显提高,两者差异有统计学意义(P<0·01);bcl-2染色43例中有13例表达明显提高,两者差异有统计学意义(P<0·01)。结论在实际免疫组化染色中,EDTA缓冲液较柠檬酸盐缓冲液能极大地提高弥漫性大B细胞淋巴瘤的Ki-67和bcl-2抗原的表达。
