901
|
Zeng Y, Miao XC, Jaio B, Li HY, Ni HY, Ito Y. Epstein-Barr virus activation in Raji cells with ether extracts of soil from different areas in China. Cancer Lett 1984; 23:53-9. [PMID: 6331635 DOI: 10.1016/0304-3835(84)90061-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Epstein-Barr virus (EBV) inducers were found in soil samples collected from the ground under tung oil trees and other plant species of Euphorbiaceae family growing in southern provinces of China where incidence of an EBV-associated malignancy, nasopharyngeal carcinoma (NPC) is prevalent. In such NPC high risk areas, the positive rate of EBV inducers in soil samples was up to 59.5%. Since many tung oil trees are planted along the roads and rivers of the high risk area, the possible significance of EBV inducers in soil under the trees in the development of malignancy among inhabitants of the area is discussed.
Collapse
|
902
|
|
903
|
Pi GH, Desgranges C, Barnkamm GW, Shen SJ, Zeng Y, de Thé G. [Comparative evaluation of technics for detection of EBV-DNA in exfoliated nasopharyngeal cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1984; 6:124-7. [PMID: 6100480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
904
|
Zeng Y, Zhong JM, Mo YK, Miao XQ. [Epstein-Barr virus early antigen induction in Raji cells by Chinese medicinal herbs]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1984; 6:84-7. [PMID: 6242369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
905
|
Zeng Y, Shen SJ, Deng H, Ma JL, Zhang Q, Zhu JS, Cheng JR. Early nasopharyngeal carcinoma among IgA/VCA antibody positive individuals detected by anticomplement immunoenzymatic method. Chin Med J (Engl) 1984; 97:155-7. [PMID: 6088182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
|
906
|
Desgranges C, Pi GH, Bornkamm GW, Legrand C, Zeng Y, de-Thé G. Presence of EBV-DNA sequences in nasopharyngeal cells of individuals without IgA-VCA antibodies. Int J Cancer 1983; 32:543-5. [PMID: 6315600 DOI: 10.1002/ijc.2910320504] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Exfoliated nasopharyngeal (NP) cells from 62 normal Cantonese Chinese having IgA/VCA antibodies for more than a year and from 39 similar persons without IgA/VCA antibodies, were tested for the presence of EBV/DNA sequences by spot followed by blot hybridization tests, using the cloned internal repeat of B95-8 viral DNA as probe. Thirteen out of 62 specimens from IgA/VCA-positive (21%) and six out of 39 specimens (15.4%) from IgA/VCA-negative individuals were found to contain EBV/DNA sequences. Forty-six cases (20 IgA/VCA-positive and 26 IgA/VCA-negative) were followed a year later for EBV/DNA sequences and EBV serology. Half of the individuals having EBV/DNA sequences in their exfoliated NP cells in 1981 did not have detectable EBV sequences a year later, and to out of 15 negative individuals became EBV/DNA-positive. There was no obvious correlation between EBV/DNA detectability and EBV serology. (We conclude that the best marker for NPC risk remains the increasing IgA/VCA and/or EA antibody titers.
Collapse
|
907
|
Zeng Y, Zhong JM, Li LY, Wang PZ, Tang H, Ma YR, Zhu JS, Pan WJ, Liu YX, Wei ZN. Follow-up studies on Epstein-Barr virus IgA/VCA antibody-positive persons in Zangwu County, China. Intervirology 1983; 20:190-4. [PMID: 6317603 DOI: 10.1159/000149391] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Serological mass surveys were carried out in Zangwu County, China, using an immunoenzymatic test. 3,533 persons were found to have Epstein-Barr virus (EBV) IgA/VCA antibody among 148,029 persons age 30 years and older who were tested during 1978-1980. Among the IgA/VCA antibody-positive persons, 55 nasopharyngeal carcinoma (NPC) cases were detected. Follow-up studies were carried out yearly on the IgA/VCA antibody-positive persons for 1-3 years, and 32 additional NPC patients were diagnosed. IgA/VCA antibody was detected 8-30 months (average, 13 months) prior to the clinical diagnosis of stage I NPC. There was no marked difference in geometric mean titers of IgA/VCA antibody between the period before onset of NPC and after diagnosis at stage I, but antibody titers were higher during stages II-IV. The NPC detection rates for all persons tested serologically and for IgA/VCA antibody-positive persons, respectively, was 2- and 82-fold the annual incidence of NPC in the general population of the same age group. These data further indicate that serological testing is valuable for the diagnosis of NPC, especially in its early stages, and that EBV may play an important role in the development of NPC.
Collapse
|
908
|
Zeng Y, Zhong JM, Mo YK, Miao XC. Epstein-Barr virus early antigen induction in Raji cells by Chinese medicinal herbs. Intervirology 1983; 19:201-4. [PMID: 6305871 DOI: 10.1159/000149361] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Ether extracts of 495 Chinese medicinal herbs from 106 families were studied for Epstein-Barr virus (EBV) early antigen (EA) induction in the Raji cell system. 15 herbs from 10 families were found to have inducing activity. Water extracts of the same herbs also had inducing activity, but it was not as strong. The significance of these herbs in the activation of EBV in vivo and their relation to the development of nasopharyngeal carcinoma are discussed. No EA-inducing activity was found in 73 samples of 14 different foods tested.
Collapse
|
909
|
Zhou G, Weng J, Zeng Y, Huang J, Qian S, Liu G. Introduction of exogenous DNA into cotton embryos. Methods Enzymol 1983; 101:433-81. [PMID: 6577258 DOI: 10.1016/0076-6879(83)01032-0] [Citation(s) in RCA: 96] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
910
|
Gu SY, Zeng Y, Ye SQ. [Establishment of a cell line (CNf-A) resistant to 8-azaguanine]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1982; 4:363-6. [PMID: 6221816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
911
|
Zeng Y, Shen SJ, Deng H, Ma JL, Zhang Q, Zhu JS, Cheng JR. [Detection of early NPC from VCA/IgA antibody positive individuals with anticomplement immunoenzymatic method]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1982; 4:254-5. [PMID: 6295651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
912
|
Zeng Y, Zhou HM, Xu JP. [Inhibitory effect of retinoids on Epstein-Barr virus induction in Raji cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1982; 4:251-3. [PMID: 6295650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
913
|
Zeng Y, Zhang LG, Li HY, Jan MG, Zhang Q, Wu YC, Wang YS, Su GR. Serological mass survey for early detection of nasopharyngeal carcinoma in Wuzhou City, China. Int J Cancer 1982; 29:139-41. [PMID: 6895884 DOI: 10.1002/ijc.2910290204] [Citation(s) in RCA: 144] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A serological mass survey was carried out in Wuzhou City of the Guangxi Autonomous Region, China. Sera were collected from 12,932 persons between the ages of 40 and 59. The positive rate of VCA/IgA antibody-positive person was 5.3%, but no EA/IgA antibody was found in sera from VCA/Iga-negative persons. Thirteen and nine nasopharyngeal carcinoma (NPC) patients were detected from the VCA/Iga and EA/IgA antibody-positive persons, respectively. With the present combination method the detection rate of NPC for 12,932 persons was 100.5/100,000 and for 680 VCA/IgA antibody-positive persons it was 1,900/100,000. Thus, the rate was twice and 37 times higher, respectively, than the annual incidence rate of NPC in persons of the same age group from 1975-1978 in Wuzhou City. Of 13 NPC patients, 9 were in stage I (70%) and 4 in stage II (30%). Therefore, it is possible to reduce the mortality rate of NPC in Wuzhou City by radiotherapy of NPC patients in the early stage of the disease. The present results further suggest that EB virus is closely associated with NPC.
Collapse
|
914
|
Fan J, Zeng Y, Liu YF. [Immunoenzymatic detection of IgA and IgG antibodies to HSV-1, HSV-2 in sera of patients with cervical cancer (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1982; 4:50-2. [PMID: 6279319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
915
|
Desgranges C, Bornkamm GW, Zeng Y, Wang PC, Zhu JS, Shang M, De-Thé G. Detection of Epstein-Barr viral DNA internal repeats in the nasopharyngeal mucosa of Chinese with IgA/EBV-specific antibodies. Int J Cancer 1982; 29:87-91. [PMID: 6277806 DOI: 10.1002/ijc.2910290115] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Fifty-six South Chinese individuals exhibiting IgA antibodies to EBV for 18 months and presenting nasopharyngeal abnormalities were biopsied. Four nasopharyngeal carcinomas, two at a very early stage, were detected. In 14 further individuals, without clinical or histopathological evidence of tumor, EBV/DNA internal repeats and/or EBNA were detected in the biopsied mucosae. The presence of IgA/EBV antibodies and/or EBV markers in the nasopharyngeal mucosa may characterize pre-cancerous conditions.
Collapse
|
916
|
Zeng Y, Zhong JM, de Thé G, Wu SH, Hou YT, Miao XQ. Enhancement of spontaneous VCA and EA induction in B95-8 cells and EA induction in Raji cells treated with human leukocyte interferon. Intervirology 1982; 18:33-7. [PMID: 6181009 DOI: 10.1159/000149301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The purpose of this study was to determine the antiviral effect of human leukocyte interferon on Epstein-Barr virus (EBV) viral capsid antigen (VCA) and early antigen (EA) induction in B95-8 and Raji cells. Interferon made at the Institute of Virology, Beijing, and that provided by Dr. Cantell gave unexpected results. Both interferon preparations markedly enhanced spontaneous VCA and EA induction in B95-8 cells and EA induction in Raji cells simultaneously treated with croton oil and n-butyrate. Interferon treatment alone had no effect on EA induction in Raji cells. Thus, the effect of interferon on EA and VCA induction was related to the type of EBV infection, i.e., productive or latent. The enhancing activity of interferon could only be partially inhibited by retinoid 7901. It is suggested that the mechanism for enhancement of EA induction by interferon is different from that of EA induction in Raji cells by croton oil and n-butyrate.
Collapse
|
917
|
Zeng Y, Shen SJ, Pi GH, Ma JL, Zhang Q, Zhao ML, Dong HJ. Anticomplement immunoenzymatic method of detecting Epstein-Barr nuclear antigen in nasopharyngeal carcinoma cells and normal epithelial cells. Chin Med J (Engl) 1981; 94:663-8. [PMID: 6274591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
918
|
Lin YC, Chao WP, Liu CR, Hu RL, Zeng Y. [The cytotoxic effect of lymphocytes from patients with nasopharyngeal cancer (NPC) against a NPC epitheloid cell line (author's transl)]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1981; 3:1-4. [PMID: 6273085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
919
|
Zeng Y, Zhou HM, Xu SP. Inhibitory effect of retinoids on Epstein-Barr virus induction in Raji cells. Intervirology 1981; 16:29-32. [PMID: 6276324 DOI: 10.1159/000149244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Induction of Epstein-Barr virus (EBV) early antigen after treatment with various combinations of croton oil and n-butyrate was markedly inhibited by retinoids 7901, 7902, Ro 10-9359 and Ro 11-1430. Possible administration of retinoids to virus capsid antigen IgA antibody-positive individuals in high-risk areas for nasopharyngeal carcinoma to prevent EBV activation and development of this cancer is discussed.
Collapse
|
920
|
Zeng Y, Pi GH, Zhang Q, Shen SJ, Zhao ML, Ma JL, Dong HJ. [Application of anticomplement immunoenzymatic method for the detection of EBNA in carcinoma cells and normal epithelial cells from nasopharynx (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1980; 2:220-3. [PMID: 6273001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
921
|
Zeng Y, Pi GH, Zhao WP. [Detection of EB virus nuclear antigen (EBNA) by anticomplement immunoenzymatic method (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1980; 2:134-5. [PMID: 6253093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
922
|
Zeng Y, Liu YX, Wei JN, Zhu JS, Cai SL, Wang PZ, Zhong JM, Li RC, Pan WJ, Li EJ, Tan BF. [Serological mass survey of nasopharyngeal carcinoma (author's transl)]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1979; 1:123-6. [PMID: 233641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|