976
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Fichou D, Horowitz G, Xu B, Garnier F. Spectroscopic Studies of the Model Oligomer Alpha-Sexithienyl in Its Neutral and Doped States. ACTA ACUST UNITED AC 1989. [DOI: 10.1007/978-3-642-83833-0_71] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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977
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Lee ML, Xu B, Huang EC, Djordjevic NM, Chang HCK, Markides KE. Liquid sample introduction methods in capillary column supercritical fluid chromatography. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/mcs.1220010104] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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978
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Xu B. A clinical use of peripheral nerve repair by a hypothermal technique. Cryobiology 1988. [DOI: 10.1016/0011-2240(88)90503-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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979
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Liu J, Yang SL, Xu B. [Effects of homoharringtonine on several oncogene mRNAs in HL-60 cells]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1988; 9:565-69. [PMID: 3256222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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980
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Xu B, Vermeulen NPE. Acceleration of free release static coating of capillary columns by the presence of polar solvents in the coating solution - a theoretical study. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/jhrc.1240111006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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981
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Chen RT, Lu ZX, Cheng JL, Xu B. [Study on antidotes of homoharringtonine]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1988; 9:477-80. [PMID: 3218544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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982
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Xu B, Vermeulen N. Preparation of wall-coated open-tubular capillary columns for gas chromatography. J Chromatogr A 1988. [DOI: 10.1016/s0021-9673(01)84504-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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983
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Commandeur JN, Oostendorp RA, Schoofs PR, Xu B, Vermeulen NP. Nephrotoxicity and hepatotoxicity of 1,1-dichloro-2,2-difluoroethylene in the rat. Indications for differential mechanisms of bioactivation. Biochem Pharmacol 1987; 36:4229-37. [PMID: 3689448 DOI: 10.1016/0006-2952(87)90663-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
1,1-Dichloro-2,2-difluoroethylene (DCDFE) produced marked nephrotoxicity in rats upon an i.p. dose of 150 mumole/kg. At doses higher than 375 mumole/kg, DCDFE also produced hepatotoxicity. Aminooxyacetic acid, an inhibitor of cysteine conjugate beta-lyase, appeared to be slightly nephrotoxic in Wistar rats. Nevertheless it exerted an inhibitory effect on the nephrotoxicity of DCDFE. The N-acetylcysteine conjugate of DCDFE was identified as a major urinary metabolite of DCDFE. When administered as such, this conjugate appeared to be a potent nephrotoxin, without any effect on the liver, indicating that glutathione conjugation of DCDFE is most likely a bioactivation step for nephrotoxicity. The appearance of traces of chlorodifluoroacetic acid in urine of rats treated with higher doses of DCDFE indicates the existence of an oxidative pathway of metabolism of DCDFE, probably involving epoxidation by hepatic mixed-function oxidases. It is speculated that the latter route might account for the hepatotoxicity at higher doses of DCDFE. The nephro- and hepatotoxicity of DCDFE, therefore, most likely are the result of two different mechanisms of bioactivation.
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984
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Zhang SY, Dai ZQ, Shu YH, Zhang JL, Xu B, Lin ZQ, Wu SF, Liu YF, Xu LZ. [Transplantation model of human lung oat cell carcinoma in nude mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:333-5, 20. [PMID: 2838233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A human lung oat cell carcinoma from a surgical specimen was successfully transplanted into nude mice and has been maintained for over four years through 14 passages. This transplanted tumor had a long latent period of more than one month, slowly growing in the initial inoculation and the following passages. The interval between two passages was about four months. 5 months after the inoculation, the transplanted tumor in nude mice grew to 2 cm in diameter. It was demonstrated that the transplanted tumor possessed the human isoenzyme pattern and human chromosome karyotype. The original human tumor and its transplanted counterparts in the nude mice were strikingly similar by histopathology. Besides, specific neuro-secretory granules in cytoplasm of the transplanted tumor were observed under transmission electron microscope.
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985
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Ling YH, Shen CY, Shi QL, Xu B. [Effects of four antitumor agents on DNA circular dichroism]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1987; 8:374-7. [PMID: 3445782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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986
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Dai ZQ, Zhang SY, Xu JY, Xu B. [Ultrastructural study on the model of human lung adenocarcinoma heterotransplanted to nude mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:248-50. [PMID: 3678013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A human lung adenocarcinoma from surgical biopsy specimen was successfully heterotransplanted into nude mice and has been maintained for 40 generations. The experiments were made on 6-8 week old male or female nude mice with Swiss genetic background cultivated in specific pathogen-free condition. The electron microscopic observation on transplanted tumor of passages 2, 6, 12, 18 and 23 revealed that the ultrastructural features of this tumor were strictly maintained and no obvious change of differentiation was found. But there was a potential prone to regional squamous epithelial metaplasia in the transplanted tumor. The nude mice model of human lung adenocarcinoma so established can be used as a good experimental system of the homologous and reproducible human cancer for the study of basic medical sciences and chemotherapy of human lung carcinoma.
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987
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Zhou JX, Lu WH, Xu B. [Changes in protein in bile excretion from rat liver inoculated with BERH-2 hepatoma]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1986; 8:409-12. [PMID: 2438104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rocket immunoelectrophoresis was used to assay the change in alpha fetoprotein (AFP) and albumin (Alb) in bile of rats 10 to 14 days after intrahepatic or intraperitoneal inoculation of BERH-2 hepatoma. The bile was collected from the common bile duct cannula. Total protein was determined by the Lowry method. The results showed that the excretion of total protein and Alb was reduced to 54% and 24% of the control in the intrahepatic group, and 65% and 56% of the control in the intraperitoneal group. Bile-AFP can be detected in rats in both groups and its concentration increased gradually during the tumor progression. In the hepatic group, the bile-AFP content per gram of tumor tissue was 29% of that in the intraperitoneal group. It suggests that decreased excretion of AFP, Alb and total protein in bile of rat bearing tumor in the liver be related to local obstruction of excretion by the tumor mass leading to constriction of biliary canaliculi.
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988
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Xu B, Vermeulen NPE. Fused silica capillary deactivation with D4 in the presence of oxygen. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/jhrc.1240091118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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989
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Wang XW, Shen ZM, Yang JL, Xu B. [Inhibitory effect of hydroxycamptothecin on colony formation of KB cells and DNA damage]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1986; 21:492-7. [PMID: 3811937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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990
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Dai ZQ, Zhang SY, Xiu JY, He GH, Xu B. [Ultrastructural observation of xenotropic C-type viruses invading rat hepatoma (BERH-2) after passage in nude mice]. SHI YAN SHENG WU XUE BAO 1986; 19:183-91. [PMID: 3033961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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991
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Xu B, Vermeulen NPE, Smit JAM. Effect of solvent composition on free release static coating of capillary columns. Chromatographia 1986. [DOI: 10.1007/bf02257331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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992
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Ling YH, Zhao CS, Xu B. [Effects of 10-hydroxycamptothecin on chromatin protein synthesis in murine hepatoma cells]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1986; 7:285-8. [PMID: 2954382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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993
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Chinami M, Nakamura E, Kakisako S, Xu B, Shingu M. Poliovirus resistant cells derived from HeLa cells. Kurume Med J 1986; 33:125-9. [PMID: 3037186 DOI: 10.2739/kurumemedj.33.125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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994
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Yue XF, Wu FG, Xu B. [Effect of oxalysine on pulmonary metastases of Lewis lung carcinoma in mice]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1985; 6:198-200. [PMID: 2943127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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995
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Xu B. [New trends in antineoplastic drug research]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1985; 20:706-9. [PMID: 3914823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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996
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Yang JL, Shen ZM, Sun YF, Han JX, Xu B. [Cultured human hepatoma cells (BEL-7404) for anticancer drugs screening]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1985; 6:144-8. [PMID: 3002123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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997
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Zhou JX, Zhou PQ, Dai ZQ, Xu B. [Influence of homoharringtonine on the ultrastructure of murine leukemia P388 cells]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1985; 6:140-4. [PMID: 2934951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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998
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Xu B, Fei JZ. Clinical observation of the weight-reducing effect of ear acupuncture in 350 cases of obesity. J TRADIT CHIN MED 1985; 5:87-8. [PMID: 3851118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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999
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Xu B, Vermeulen NPE. Free release static coating of glass capillary columns; rapid coating at lower temperatures and elevated pressures. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/jhrc.1240080405] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1000
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Xu B, Ling YH. The effect of hydroxycamptothecin in the activity of RNA and DNA polymerases prepared from murine hepatoma cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 1985; 13:23-31. [PMID: 4025212 DOI: 10.1142/s0192415x85000058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hydroxycamptothecin (HCPT) is an antitumor alkaloid isolated from Camptotheca acuminata indigenous to China. It could reduce the activity of nuclear RNA polymerase II and I(III) of hepatoma cells. HCPT at 25-100 microM caused a remarkable inhibition on DNA polymerase alpha whilst only a slight inhibition on beta. The inhibitory action on alpha was restored by increasing amounts of enzyme or DNA template, but unchanged by varying amounts of substrate. It is suggested that HCPT may exert a stronger inhibition on DNA replication process.
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