8451
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Zhang JT, Liu Y, Qu ZW, Zhang XL, Xiao HL. [Influence of ginsenoside Rb1 and Rg1 on some central neurotransmitter receptors and protein biosynthesis in the mouse brain]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1988; 23:12-6. [PMID: 2840797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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8452
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Wu WC, Liu Y. [Technology on the introduction and cultivation of Rhodiola sachalinensis A. Bor]. ZHONG YAO TONG BAO (BEIJING, CHINA : 1981) 1987; 12:16-8, 57-8. [PMID: 3446389] [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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8453
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Liu Y, Brew K, Carraway KL, Carraway CA. Isolation of a calcium-sensitive, 35,000-dalton microfilament- and liposome-binding protein from ascites tumor cell microvilli: identification as monomeric calpactin. J Cell Biochem 1987; 35:185-204. [PMID: 2961774 DOI: 10.1002/jcb.240350303] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Microvilli isolated from the MAT-C1 ascites subline of the 13762 rat mammary adenocarcinoma contain a major calcium-sensitive microfilament-binding protein, AMV-p35 (ascites microvillar p35). Association of AMV-p35 with microfilament cores during Triton X-100 extraction of the microvilli is half-maximal at 0.1-0.2 mM calcium. The protein, which comprises 6% of the total microvillar protein, can be isolated from microfilament cores prepared in the presence of calcium by extraction with EGTA and purification by ion-exchange chromatography. Alternatively, the protein can be isolated from Triton extracts of microvilli prepared in the absence of calcium by precipitation with calcium, solubilization of the precipitate with EGTA, and chromatography on an ion-exchange column. AMV-p35 binds to phosphatidylserine liposomes and F-actin with half-maximal calcium concentrations of about 10 microM and 0.2 mM, respectively. Treatment of AMV-p35 with chymotrypsin yields a 33,000-dalton fragment, behavior similar to the tyrosine kinase substrates calpactins I and II and lipocortins I and II. Immunoblot analyses using antibodies directed against calpactin I, lipocortin I, and lipocortin II showed strong reactivity of AMV-p35 with anti-calpactin I and anti-lipocortin II, but little reactivity toward anti-lipocortin I. The close relationship between AMV-p35 and calpactin I was verified by amino acid sequence analyses of peptides isolated from cyanogen bromide digests of AMV-p35. By gel filtration and velocity sedimentation analyses purified AMV-p35 is a 35,000-dalton monomer. Moreover, AMV-p35 extracted directly from microvilli in Triton/EGTA also behaves as a 35,000-dalton menomer. These findings indicate that AMV-p35 is closely related to the pp60src kinase substrate calpactin I (p36). However, AMV-p35 occurs in the microvilli as a monomer rather than as the heterotetrameric calpactin found in several other cell types.
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8454
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Qian SS, Gao J, Wang JX, Cai YY, Liu Y, Li BG, Dong HY, De Bruyne G, Mareel M. Establishment and characterization of a continuous murine uterine cervix cancer cell line metastatic to lymph nodes and lungs. IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY : JOURNAL OF THE TISSUE CULTURE ASSOCIATION 1987; 23:738-44. [PMID: 3680100 DOI: 10.1007/bf02623673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The murine uterine cervix cancer (MUCC) cell line was derived from a chemically induced Kunming mouse uterine cervix cancer (U27) and maintained in culture on solid substrates for over 100 passages. Cultures were morphotypically heterogeneous and heteroploid, with a modal number of chromosomes = 80. Each cell showed at least two abnormal chromosomes. Immunogold-silver staining was positive for keratin, vimentin, and laminin but not for desmin. The population doubling time was 27.8 h with a saturation density of 3.2 X 10(5) cells/cm2 and a peak mitotic index of about 6%. MUCC cells produced colonies on tissue culture plastic (68%) and in soft agar (8%). MUCC cells were fully malignant inasmuch as they produced in syngeneic mice invasive tumors that reproducibly were metastatic to lymph nodes and lungs. The MUCC cell line is the first mouse cervix cancer cell line useful for the study of invasion and metastasis.
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8455
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Qu ZW, Liu Y, Zhang JT. [Assay procedures for the determination of monoamines in the rat and mouse brain by means of reversed-phase high-performance liquid chromatography with electrochemical detection]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:371-5. [PMID: 2968863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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8456
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Liu Y, Zhang JT, Yang JH. [Comparative study on the pharmacological effects of some Scopolia alkaloid derivatives]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1987; 22:725-9. [PMID: 3450123] [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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8457
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Yang Y, Jia SS, Liu Y. [Clinical analysis of 54 cases of pulmonary infiltration with eosinophilia]. ZHONGHUA NEI KE ZA ZHI 1987; 26:527-9, 564-5. [PMID: 3450473] [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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8458
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Chen RD, Wang RZ, Luo HZ, Liu Y, Bao PY, Li XL, Li FR, Guo ZR, Han R, Li LM. [Chemoprevention of cancer of the uterine cervix--preliminary study on the intervention of the cervical precancerous lesion by retinamide RII]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:348-50. [PMID: 3452524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Twenty seven women with mild, moderate or severe cervical dysplasia proven by pathology were treated by retinamide RII suppository. Retinamide RII suppository, 10 mg QD, was given intravaginally for six months (three months as a course). Clinical examination, Papanicolaou cytology and tissue biopsy under colposcope were carried out before and after treatment. The results indicated that after the second course, 26 out of 27 patients responded; of them, precancerous lesions disappeared in 24 and even normal squamous epithelium was observed in 3. The overall response rate was 96.29% and the marked response rate was 88.89%. The general side effects were mild. There was little cervical and vaginal irritation which was well tolerated. The results of this clinical trial make available a practical base for chemoprevention of cervical cancer.
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8459
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Liu Y, Zhang JB, Zou YH, Yuan J. [Ultrastructure of hypoxic HeLa cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:287-9, 13-6. [PMID: 2964934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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8460
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Qian SS, Gao J, Wang JX, Liu Y, Dong HY. [Establishment of a mouse forestomach carcinoma cell line (MFC) with spontaneous hematogenous metastasis and preliminary study of its biological characteristics]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1987; 9:261-4. [PMID: 3678016] [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 mouse forestomach carcinoma cell line (MFC) prone to blood-born metastasis to lung was established in vitro. This cell line has been subcultured for more than 132 passages. MFC cells lacked in contact inhibition and, morphologically, appeared as round, polygonal and spindle cells. Ultrastructurally, there were abundant microvilli on the cellular surface and extensive filopodia in the cytoplasm; nuclei showed irregular shape with an increased nucleus-cytoplasm ratio; desmosomes, hemidesmosomes as well as a small number of tonofibrils were observed. The doubling time of MFC cell population was 24.7 hours. The average mitotic index was 32.9% and the maximum was 62% with 70-76 mode. The homotransplant efficiency was 100% (11/11). In morphology, the solid tumors induced were similar to FC tumor, from which the MFC cell line was derived and 81.8% (9/11) developed spontaneous lung metastasis. It is indicated that this cell line still retains the primary tumor's feature of spontaneous hematogenous metastasis. MFC cell line might be very useful in experimental treatment, study of tumor metastatic mechanism and isolating subpopulation.
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8461
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Carraway KL, Liu Y, Puett D, Carraway KL, Carraway CA. Phenothiazine binding by a homolog of calpactin, the pp60src tyrosine kinase substrate. FASEB J 1987; 1:46-50. [PMID: 3301497 DOI: 10.1096/fasebj.1.1.3301497] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Microvilli isolated from 13762 mammary ascites tumor cells contain a major calcium-sensitive protein (AMV-p35) that can be isolated with microvillar microfilament cores prepared by Triton X-100 extraction in the presence but not absence of calcium. AMV-p35 can be readily purified from ethylene glycol bis(beta-aminoethyl ether)-N,N,N',N'-tetraacetic acid extracts of the microfilament cores by chromatography on an anion exchange column, to which it does not bind. Immunoblot analysis indicates that AMV-p35 is related to calpactin I, the pp60src tyrosine kinase substrate. In the presence of calcium, AMV-p35 binds approximately 4 mol of chlorpromazine per mole of protein in a binding process showing apparent positive cooperativity, similar to calmodulin; however, in contrast to calmodulin, AMV-p35 also binds phenothiazine in the absence of calcium.
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8462
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Liu JS, Liu Y, Jiao HA, Chin YC. [Calmodulin content in the rabbit reticulocyte and influence of opioid peptides on calmodulin activity in its membrane]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:165-70. [PMID: 2888543] [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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8463
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Liu Y, Riklund R. Electronic properties of perfect and nonperfect one-dimensional quasicrystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1987; 35:6034-6042. [PMID: 9940834 DOI: 10.1103/physrevb.35.6034] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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8464
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Liu Y. The utilization and exploitation of labour force resource in the Jiangsu Province. POPULATION RESEARCH (PEKING, CHINA) 1987; 4:10-6. [PMID: 12281037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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8465
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Yin SN, Li Q, Liu Y, Tian F, Du C, Jin C. Occupational exposure to benzene in China. BRITISH JOURNAL OF INDUSTRIAL MEDICINE 1987; 44:192-5. [PMID: 3828244 PMCID: PMC1007803 DOI: 10.1136/oem.44.3.192] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Of a total of 528,729 workers exposed to benzene or benzene mixtures in China, 508,818 (96.23%) were examined. Altogether 2,676 cases of benzene poisoning were found, a prevalence of 0.15%. A higher prevalence of benzene poisoning was found in the cities of Hangjou, Hefei, Nanjing, Shenyang, and Xian. The geometric mean concentration of benzene in 50,255 workplaces was 18.1 mg/m3 but 64.6% of the workplaces had less than 40 mg/m3. There was a positive correlation between the prevalence of benzene poisoning and the concentration in shoemaking factories. The prevalence of benzene induced aplastic anaemia in shoemakers was about 5.8 times that occurring in the general population. The results of this investigation show the need for a practicable hygiene standard to prevent benzene poisoning.
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8466
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Liu Y. [Preliminary study of 12 biochemical components in amnionic fluid of normal pregnancy]. ZHONGHUA FU CHAN KE ZA ZHI 1987; 22:75-8, 125. [PMID: 3622073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8467
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Jen PC, Liu Y. Hemoglobin Guangzhou, alpha 64(E13)Asp----Gly, a new abnormal hemoglobin found in Guangzhou, China. Hemoglobin 1987; 11:25-30. [PMID: 3454663 DOI: 10.3109/03630268709036577] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8468
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Liu Y, Zhang Q, Tittel FK, Curl RF, Smalley RE. Photodetachment and photofragmentation studies of semiconductor cluster anions. J Chem Phys 1986. [DOI: 10.1063/1.451332] [Citation(s) in RCA: 214] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8469
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Henderson G, Liu Y, Guan X, Liu Z. The rise of technology in Chinese hospitals. Int J Technol Assess Health Care 1986; 3:253-63. [PMID: 10284923 DOI: 10.1017/s0266462300000544] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Chinese hospitals in the 1980s are in the midst of a technological revolution. Based upon data from several regions in China, this paper describes the political, organizational, economic, and philosophical changes which have accompanied the shift in focus from primary care medicine to high technology tertiary care. The increased authority of physicians, greater contact with the West, and increased funding for medical equipment are key factors in these changes. Although the Chinese state continues to control the administration and financing of most hospitals, the decentralizing reforms of Deng Xiaoping have undermined its ability to effectively plan for, and assess new technology. At present, limited resources prevent most regions from excessive technology acquisition, but the state must rebuild its planning capacity in order to foster rational allocation of scarce medical resources.
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8470
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Wang ZP, Liu Y. [Coordination of the redressment of the single cardioventricle]. ZHONGHUA HU LI ZA ZHI = CHINESE JOURNAL OF NURSING 1986; 21:350-1. [PMID: 3643823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8471
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Liu Y, Chao KA. dc conductivity in one-dimensional incommensurate systems. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 34:5247-5252. [PMID: 9940355 DOI: 10.1103/physrevb.34.5247] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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8472
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Liu Y. [Clinical observation on human chorionic gonadotrophin in maternal serum and amniotic fluid using monoclonal antibody immunoenzyme assay]. ZHONGHUA FU CHAN KE ZA ZHI 1986; 21:257-60, 317. [PMID: 3545711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8473
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Qian SS, Gao J, Wang JX, Cai YY, Liu Y, Li BG, Dong HY. [Establishment and biologic properties of a mouse uterine cervix cancer cell line (MUCC) with lymphatic and hematogenous metastatic capacities]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1986; 8:324-7. [PMID: 3568983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
For study of tumor metastatic mechanism, a mouse uterine cervix cancer cell line (MUCC), as derived from a transplantable mouse uterine cervix cancer No. 27 (U 27) with metastatic capacities through lymphatics and blood, was established in vitro. It has been successfully maintained for more than 24 months through more than 100 passages. MUCC cells are epithelioid with definite malignant morphological features. The doubling time of the cell population is 27.8 hours. The average mitotic index is 30.6%, with a maximum of 58.9%. Chromosomes show aberration in number and structure. The homotransplant rate is 75% (9/12). The solid tumor, produced by homotransplant, is similar to the tumor U 27. Metastases are present in the lymph nodes and lungs in these 9 animal models. It is evident that this cell line retains the capacity of inducing daughter tumor lines with spontaneous lymphatic and blood metastases. MUCC cell line might be very useful in isolating subpopulations which possess the different metastatic abilities and the study of metastatic mechanism.
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8474
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8475
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Liu Y, O'Brien S, Zhang Q, Heath J, Tittel F, Curl R, Kroto H, Smalley R. Negative carbon cluster ion beams: New evidence for the special nature of C60. Chem Phys Lett 1986. [DOI: 10.1016/s0009-2614(86)80042-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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