1986 Fiscal Year Final Research Report Summary
A study for mecanism of polyclonal B cell activation in patient with cancer. (I)
| Project/Area Number |
60570948
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
外科・放射線系歯学
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| Research Institution | Kanagawa Dental College |
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Principal Investigator |
YAMAGUCHI Misao Kanagawa Dental College, the faculty of Dental Science, 歯学部, 講師 (80104438)
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| Co-Investigator(Kenkyū-buntansha) |
久米川 一浩 神奈川歯科大学, 歯学部, 助手 (50170064)
OHASHI Mikio Kanagawa Dental College, thw faculty of Dental Science, 歯学部, 助手 (00160599)
SASAKURA Yuuichi Kanagawa Dental College, the faculty of Dental Science, 歯学部, 助手 (80121002)
KUMEGAWA Kazuhiro Kanagawa Dental College, the faculty of Dental Science
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| Project Period (FY) |
1985 – 1986
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| Keywords | Actinomyces viscosus / Human peripheral blood lymphocytes / Flow cytometer / TCA cycle / Succinate metabolism / Immunoglobulin synthesis / General anesthesia |
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| Research Abstract |
1. The supernatant of sonicated Actinomyces viscosus (AVsup) were examind for it's mitogenecity to human peripheral blood lymphocytes (PBL).: AVsup induced a low increase of DNA synthesis on T cell and B cell fraction, but a higher increase on unfractionated lymphocytes (UNF). AVsup did not induced of OKT3(+), OKT4(+), OKT8(+) cell population. However, it increased OKDR(+) cell population included activated T cell, 70% of B cells, 55% of monocytes, but only monocytes were excluded by appropriate gating on the cytogram of the flow cytometer, although it faild to increased OKB7(+) cell population. So the increasing of OKDR antigen positive cell population was considered not as B cells but activated T cell.
2. Human PBL were cultured with succinate 1,4- <^(14)C> , which is a TCA cycle intermediated metabolic substance, in the stimulation with pokeweed mitogen (PWM). It was recognized that <^(14)C> was taken into the lymphocytes, utillized for cell metabolism and finally synthesized into im
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munoglobulins.: (1) <^(14)C> concentration in the UNF kept at low level for 1-7 days when cultured without PWM. However the stimlating with PWM increased the level by 3 times in the first day, and then they decleased with day. (2) <^(14)C> concentration in the macromolecucular substances detected in the PWM-stimulated culture sup increased with time from the third day on. The maximum value of <^(14)C> in the macromolecular substances was 0.4% of that initially added. (3) Immunoglobulins (IgG,A and M) containing <^(14)C> were detected in the sup after 7 days culture with PWM. They showed 5.6% of <^(14)C> which was detected in the macromolecular substances in the sup. The order of <^(14)C> content was B<UNF<T+B fraction.
3. Infuluence of general anesthesia on the percentage of lymphocyte subset in PBL. Lymphocyte membrane markers were analysed with flow cytometry. The results demonstrated that the positive percentage of CD3, CD4, CD20 and the ratio of CD4/8 were found to be significantly lower, and that of CD8 were found to be significantly higher during anestesia than pre and postanesthesia. Less
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Research Products
(3 results)
