6.Determination of telomerase activity in carcinoma of bile duct and its clinical significance
Xiao-Dong GU ; Kuan-Sheng MA ; Zhen-Ping HE
Journal of Third Military Medical University 2001;23(5):582-583
Objective To explore the relationship between te lomerase activity and bile duct carcinoma and its significance in clinical diag nosis. Methods Telomerase activities were examined in 23 cases of bile duct carcinoma, 5 cases of carcinoma adjacent tissues and 5 cases of nor mal bile duct tissues respectively with telomerase PCR-ELISA method. Results Telomerase activity was detected in 18 of 23 cases (78.3%) of b ile duct carcinoma, and was not found in 5 cases of carcinoma adjacent tissues a nd 5 cases of normal bile duct tissues. The detection rate of telomerase activit y had no correlation with patients' age, sex, tumor site and size but significan tly correlated to metastasis of tumor (P<0.05). Conclusion The level of telomerase activity was significantly higher in bile duct carcino ma and may be served as one of the clinical marker for malignant neoplasm becaus e of its spsecificity.
7.Trachoma prevalence in rural primary school children, Gansu Province
Ya-Dong, WANG ; Wen-Fang, ZHANG ; Duo-Sheng, XIA ; Zhuo, GU ; Gang, DU
International Eye Science 2014;(8):1504-1505
AIM:To make a survey on people suffering trachoma in Gansu province, and to provide evidence for developing trachoma control and prevention therapy.
METHODS: We chose the zone on the basis of relative information. Provincial Office of Blindness Prevention carried out the survey in 3 counties including Tange Township of Wushan, Xiqu Township of Minqin and Hulinjia Township of Jishishan from October 14, 2013 to November 23, 2013. One hundred and fifty primary school students were selected, including 72 boys and 78 girls aging from 5a to 10a with the average age of 7. 5y. The targeted students received the fast trachoma assessment by the adoption of simplified trachoma classification system which was recommended by the World Health Organization.
RESULTS: No case of active trachoma, trachomatous trichiasis and corneal disease were examined among 150 students.
CONCLUSION: The rate of trachoma is low in Gansu province. But we still cannot get the conclusion that there is no epidemic of trachoma in Gansu. And we need to further expand the survey scope to correctly assess the trachoma case and to provide reliable evidence for trachoma prevention and control.
8.Observations on Meissner's corpuscle in prepuces of different ages
Hai-Yang JIANG ; Dong GUO ; Ming-Bo TAN ; Sheng-Mei XU ; Gu-Xin WANG ;
Chinese Journal of Urology 2001;0(10):-
Objective To observe Meissner's corpuscles in prepuces of different shapes and ages. Methods The Meissner's corpuscles were detected with immunohistochemical stain in 204 prepuce sam- ples of different shapes and ages (3-59 years),and the density of Meissner's corpuscles in every sample was obtained as well.The difference of Meissner's corpuscle densities between phimosis and redundant pre- puce,and correlation between Meissner's corpuscle densities and ages were analyzed with Chi-square test and linear regression,respectively.Results The density of Meissner's corpuscles in redundant prepuce has begun to increase since infancy and reached the peak at the age about 15 years.No significant difference in densities of Meissner's corpuscles between phimosis and redundant prepuce was observed till the age of 20 years,and then there was a trend of disappearance of Meissner's corpuscles in redundant prepuce.A signifi- cantly negative correlation between the densities of Meissner's corpuscles and ages was revealed in redundant prepuce (r=-0.236,P=0.009),whereas an insignificantly positive correlation between the densities of Meissner's corpuscles and ages was shown in phimosis (r=0.193,P=0.084).Conclusions The den- sities of Meissner's corpuscles in redundant prepuce develop synchronically with genital differentiation and accord with the status of sexual function in adult males.The persistent high level of Meissner's corpuscles in adult phimosis might be a mechanism of physiological compensation.
9.Inhibitory effects of antisense focal adhesion kinase oligodeoxynucleotides on the invasion of Bel 7402 hepatocellular carcinoma cells.
Yan GU ; Ji-sheng CHEN ; Xiao-dong ZHOU
Chinese Journal of Hepatology 2003;11(10):612-615
OBJECTIVETo study the inhibitory effects of antisense focal adhesion kinase (FAK) oligodeoxynucleotides (ODN) on the invasion of Bel 7402 cells, and investigate the mechanisms.
METHODSLipofecTAMINE-mediated antisense FAK ODN was transfected into Bel 7402 cells. Cell number and viability were evaluated every 24 hours by trypan blue dye exclusion. Cell attachment assay was carried out at intended time points in a microculture well pre-coated with fibronectin (FN). The invasive activity of tumor cells was assayed in a transwell cell culture chamber. Cell cycle and cell apoptosis analysis were performed with flow cytometry (FCM).
RESULTSThe expression of p125FAK in the group treated with antisense FAK ODN (6.49%+/-0.10%) significantly decreased, compared with those in the group treated with sense FAK ODN (14.33%+/-1.88%) and control group (16.68%+/-1.62%), F=7.66, P<0.01. Antisense FAK ODN significantly inhibited the growth of Bel 7402 cells by 30%-60%, the attachment by 25%-55%, and the invasion, 15%-25%. The decreased expression of FAK in Bel 7402 cells caused a G2/M cell cycle arrest, and the cells at S phase decreased significantly. The occurrence of apoptosis detected by FCM increased significantly in the group treated with antisense FAK ODN.
CONCLUSIONSInhibition of FAK expression significantly decreases the attachment between ECM and Bel 7402 cells, and the ability of Bel 7402 cells to invade the reconstituted basement membrane. In addition, FAK suppression significantly inhibits the proliferation of Bel 7402 cells in vitro, and increases their apoptosis.
Apoptosis ; drug effects ; Carcinoma, Hepatocellular ; genetics ; metabolism ; pathology ; Cell Adhesion ; Cell Division ; genetics ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Gene Expression Regulation, Enzymologic ; Gene Expression Regulation, Neoplastic ; Humans ; Liver Neoplasms ; genetics ; metabolism ; pathology ; Neoplasm Invasiveness ; Oligonucleotides, Antisense ; pharmacology ; Protein-Tyrosine Kinases ; pharmacology ; Transfection
10.The effect of shourong compound formula on levels of dopamine and its metabolites in brain of Parkinson's disease mice induced by reserpine.
Wei WANG ; De-zhong ZHAO ; Xiao-fang SUN ; Sheng-dong GU
China Journal of Chinese Materia Medica 2002;27(5):368-370
OBJECTIVETo investigate the effect of Shourong compound formula on treating Parkinson's disease.
METHODParkinson's disease model mice induced by reserpine was used and by HPLC-ED the levels of Dopamine (DA) and its metabolites were determined.
RESULTMadopar could increase the levels of DA in brain of PD mice. The effect of madopar together with Sourong compound formula was better than that of madopar(P < 0.001).
CONCLUSIONShourong compound formula together with madopar has synergic effect on increase of DA level in brain and can reduce clinic dose of madopar so that side effect of madopar can be decreased.
3,4-Dihydroxyphenylacetic Acid ; metabolism ; Animals ; Benserazide ; pharmacology ; Brain ; metabolism ; Dopamine ; metabolism ; Drug Combinations ; Drug Synergism ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Homovanillic Acid ; metabolism ; Levodopa ; pharmacology ; Male ; Mice ; Parkinson Disease, Secondary ; chemically induced ; metabolism ; Plant Extracts ; pharmacology ; Plants, Medicinal ; chemistry ; Reserpine