【摘要】 目的 探讨宫颈上皮内瘤变（CIN）和宫颈鳞癌（SCC）组织中人类染色体端粒酶基因（hTERC）的表达和临床意义。 方法 收集2007年10月-2009年6月经病理学证实的116例宫颈脱落细胞标本，其中LSIL（CINⅠ）30例、HSIL（CINⅡ/Ⅲ）37例、SCC 16例、宫颈炎33例，用荧光原位杂交（FISH）方法检测脱落细胞hTERC基因。 结果 在宫颈炎、LSIL、HSIL和SCC组中hTERC基因的表达率分别是6.1%、16.7%、51.4%和93.8%，其中，HSIL、SCC组与宫颈炎组比较，hTERC基因阳性率差异有统计学意义（Plt;0.05），LSIL组与HSIL组比较、LSIL组与SCC组比较、HSIL组与SCC组比较，差异有统计学意义（Plt;0.05），且随着病变程度增加，hTERC基因表达率增加。 结论 hTERC基因在细胞学LSIL、HSIL和SCC中表达异常，且随病变程度增加阳性表达率也增加，可作为宫颈癌癌前病变进展的生物遗传学监测指标，并有望成为宫颈癌早期筛查方法之一。【Abstract】 Objective To explore the clinical significance and expression of the human telomerase gene (hTERC) in the cervical intraepithelial neoplasia (CIN) and squamous carcinoma of the cervix (SCC). Methods According to histological biopsy from October 2007 to June 2009, 116 pap smears were divided into LSIL (n=30), HSIL (n=37), SCC (n=16), and cervicitis (n=33) groups. Fluorescence in situ hybridization (FISH) was used to detect the expression of hTERC. Results Positive expression rate of hTERC was 6.1% in cervicitis group, 16.7% in LSIL group, 51.4% in HSIL group, and 93.8% in SCC group, respectively. Compared to cervicitis group, the expression of hTERC in HSIL and SCC groups was significantly higher (Plt;0.05). Among LSIL, HSIL, and SCC groups, there were significant differencec in hTERC expression between every two groups (Plt;0.05). From LSIL to SCC, the expression of hTERC increased obviously. Conclusion Abnormal expression of hTERC exists in LSIL, HSIL, and SCC patients, which significantly increases during malignant development. It may be a biogenetics monitor index of cervical precancerosis and will be a screening marker for cervical cancer.
Effect of radical operation on expression of interleukin-2(IL-2)mRNA and production of IL-2 were markedly reduced preoperatively and four weeks after operation,expression of IL-2 mRNA significantly enhanced,but it was still lower than that in the normal group.Production of IL-2 nearly reached normal level,When PBL was activated by phytohemagglutinin(PHA),expresseion of IL-2 mRNA and production of IL-2 were much higher than that in non-activated PBL.These results suggested that expression of IL-2 were much higher than that in non-activated PBL.These results suggested that expression of IL-2 mRNA and production of IL-2 are dificient in gastric cancer patients,and radical surgery will help them to recover and they can also be improved through activation with PHA.
【Abstract】Objective To study the relationship of the expression of CD44v6 mRNA and nm23H1 mRNA with the clinical pathology parameter and prognosis of breast cancer, and to investigate the correlation of the expression of CD44v6 mRNA and nm23H1 mRNA. Methods In situ hybridization and CSA immunohistochemistry method were used to detect the expression of CD44v6 mRNA and nm23H1 mRNA in 94 cases of breast cancer. Results The positive expression of CD44v6 mRNA and the negative expression of nm23H1 mRNA were positively correlated with the grading, clinical stage, lymph node metastasis, and recurrence and prognosis of breast cancer. CD44v6 mRNA expression and nm23H1 mRNA were negatively correlated in breast cancer. Patients who had positive expression of CD44v6 mRNA and negative expression of nm23H1 mRNA had a higher lymph node metastatic rate and a lower survival rate. Conclusion Several genes were involved in the occurrence and development of breast cancer in which the expression of CD44v6 mRNA has synergistic action in negative regulation with that of nm23H1 mRNA. Combined detection of the expression of these two mRNA is helpful to judge the metastasis, recurrence and prognosis of breast cancer.
ObjectiveTo observe the expression of connective tissue growth factor (CTGF) in injured model of retinal pigment epithelial (RPE) cells and the promoting effect of CTGF on migration of RPE cells.MethodsCultured monolayer-confluent human RPE cells were scraped with a trephine and a cotton stick, and set up the injured model of RPE cells with round scraped area. Immunohistochemistry and in situ hybridization(ISH) were used to detect the expression of CTGF protein and mRNA in injured RPE cells at distinct time points after injury. The number of RPE cells migrated to injured area was measured and the effect of CTGF on migration of RPE cells and the effect of dexamethasone (DEX) on the promoting process of CTGF were observed.ResultsThe results of immunohstochemistry and ISH indicated the weak positive expression of CTGF in RPE cells at the edge of scrape 6 hours after injury, and the positive expression increased gradually as time goes by after the injury. Strong positive expression of CTGF in RPE cells at the edge of scrape was found 24 and 48 hours after injury. Rebuilt human CTGF stimulated migration of RPE cells in a dose-depended manner, and DEX significantly inhabited the migration.ConclusionCTGF involves in the procedure of repair of injury of RPE cells, which may play an important role in the pathogenesis of intraocular proliferative diseases such as proliferative vitreoretinaopathy.(Chin J Ocul Fundus Dis, 2005,21:306-309)
Objective To investigate the association of the expression of CD15 mRNA with the invasion and prognosis of hepatocellular carcinoma (HCC) and the expression of nm23H1 mRNA. Methods In situ hybridization and immunohistochemistry methods were used to detect the expression of CD15 mRNA and protein nm23H1 mRNA in HCC.Results In 99 cases of HCC, the positive rate of CD15 mRNA,its protein and nm23H1 mRNA were 38.4%, 36.4% and 76.8%, respectively. The expression of CD15 mRNA was consistent with its protein and negatively correlated with the expression of nm23H1 mRNA. The expression of CD15 mRNA and its protein, nm23H1 mRNA were associated with the invasiveness and metastasis of HCC and the prognosis of HCC patients. Conclusion The detection of CD15 expression could be a new pathological biology index to judge the metastasis and prognosis of HCC.
Objective To identify the expression of pleiotrophin （PTN） mRNA and protein in the colorectal cancer tissues， and to explore the clinical value of it. Methods The expressions of PTN mRNA and protein in colorectal cancer tissues （colorectal cancer group） as well as normal colorectal tissues （normal control group） were tested by using in-situ hybridization and immunohistochemistry. Results The positive rates of PTN mRNA 〔63.9% （53/83） vs. 40.7%（22/54）〕 and protein〔60.2%（50/83） vs. 33.3%（18/54）〕 in colorectal cancer group were all significantly higher than those of normal control group （P=0.008， P=0.002）. There were no significant relationship between expressions of PTN mRNA and protein with gender， age， and type of tumor （P＞0.05）， but in tissues of Ⅲ-Ⅳ stage and poor differentiation，the positive rates of PTN mRNA and protein were all higher （P＜0.05）. Conclusions The over expressions of PTN mRNA and protein in colorectal cancer tissues may directly related to the invasion and metastasis. Meanwhile， it can be used as an index to predict metastasis and prognosis of colorectal cancer.
Objective To explore the expression of tumor necrosis factor (TNF) mRNA, TNF and TNFR in the gallbladder mucosa which developed from hyperplasia, dysplasia to carcinoma, and to further discuss the relationship between TNF and pathogenesis of gallbladder carcinoma. Methods In situ hybridization and immunohistochemistry were used to determine TNF mRNA, TNF protein and TNFR protein expression in hyperplasia, dysplasia and carcinoma of gallbladder. Results ①No one of 20 cases of gallbladder hyperplasia was found to express TNF mRNA, while 4 of 20 (20%) cases of dysplasia and 18 of 20 (90%) cases of carcinoma were found to express TNF mRNA (P＜0.05). ②For the expression of TNF mRNA in mononuclear cells (MNC), positive staining was found in 15% of gallbladder hyperplasia, 85% of dysplasia and 90% of carcinoma, respectively (P＜0.05). The cell numbers of positive staining MNC were 4.85±1.50, 6.00±2.71 and 9.33±3.07, respectively (P＜0.05). ③In gallbladder carcinoma, the cell number of carcinoma and MNC with positive TNF mRNA expression was correlated with clinical stage (P＜0.05). The higher the clinical stage, the more the positive staining cell numbers. The positive staining cell numbers of carcinoma in stage Ⅰ-Ⅲ and Ⅳ-Ⅴ were 9.13±4.39 and 14.80±4.02, respectively (P＜0.01), and the positive staining cell numbers of MNC were 7.13±2.53 and 11.10±2.23, respectively (P＜0.05). ④The cell numbers of carcinoma and MNC with TNF mRNA expression increased with tumor size. In tumors with diameter over 2 cm and less than 2 cm, the positive staining cell numbers of carcinoma were 14.00±4.20 and 8.83±4.96, respectively (P＜0.05), and that of MNC were 10.50±2.54 and 7.00±2.83, respectively (P＜0.05). ⑤The region of TNF protein expression was similar to that of TNF mRNA, but TNF protein expression was more frequent and wider than that of TNF mRNA. ⑥The tumor necrosis factor receptor was expressed in tumoral vascular endothelial cells and MNC in all cases of carcinoma, but was negatively stained in mucosa epithelial cells and tumor cells of all cases. ⑦There was positive linear correlation in TNF mRNA between tumor cell and MNC (r=0.687, P＜0.01), same as that in TNF protein expression (r=0.742, P＜0.01); and there was positive linear correlation in tumor cell between TNF mRNA and TNF protein expression (r=0.847, P＜0.01), same as that in MNC (r=0.643, P＜0.01). Conclusion The TNF mRNA and TNF protein expression are increasing during the development of gallbladder mucosa epithelial from hyperplasia, dysplasia to carcinoma, and increasing with tumor stage. It suggests that TNF may contribute to carcinogenesis of gallbladder carcinoma induced by gallstone, and related to the progression of gallbladder carcinoma.
Objective To study the mRNA expressions of protein kinase C(PKC) and nerve growth factor (NGF) in rat sciatic nerve and the number ofaxons after phorbol-12-myristate-13-acetate (PMA) was injected into silicone chamber. Methods Forty-two SD adult rats were divided into six groups depending on the time of injury (1 day, 3 days, 1 week, 2 weeks, 3 weeks and 4 weeks). A 0.5 cm nerve was cut in doublerat sciatic nerves and “T” type silicone chamber was sutured. PMA at the concentration of 1×10-9mol/L was injected discontinuously into the right side of Ttype silicone chamber(PMA group) and saline was injected into the left side(control group). Nucleic acid in situ hybridization histochemistry technique and thecomputer imagine analysis were employed to detect dynamic changes of PKC mRNA and NGF mRNA in rat sciatic nerves. The number of axons was measured. Results The expressions of PKC mRNA and NGF mRNA increased after injury, and the expressions of PKC mRNA and NGF mRNA reached the peak 2 weeks and3 weeks after injury respectively in control group. The expressions of PKC mRNA and NGF mRNA in PMA group were significantly increased than those in control group 2,3 and 4 weeks after injury(Plt;0.01).The number of axons in PMA group significantly increased than that in control group(Plt;0.01). Conclusion PKC involved inthe expression of NGF mRNA and nerve regeneration after injury. During the regenerated course, PMA can promote the expression of NGF mRNA and the number of axons after injury.