Yasutomi Y, Onuma M, Yamamoto M, Kawakami Y, Azuma I. In vitro activation of bovine macrophage and peripheral blood mononuclear cells by Nocardia rubra cell wall skeleton (N-CWS).
ZENTRALBLATT FUR VETERINARMEDIZIN. REIHE B. JOURNAL OF VETERINARY MEDICINE. SERIES B 1990;
37:712-20. [PMID:
2267895 DOI:
10.1111/j.1439-0450.1990.tb01119.x]
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Abstract
Nocardia rubra cell wall skeleton (N-CWS) was used for immunotherapy to bovine leukemia virus (BLV)-positive cattle with enlarged subcutaneous lymphatic nodules. Electron microscopical observations showed the infiltration of macrophage and T cells around N-CWS treated lesions. Antitumor effect induced by N-CWS was examined in vitro. The maximum cytolytic activity of macrophage was observed, when the cells were incubated with 10 micrograms/ml of N-CWS. Chemiluminescence response of peripheral blood mononuclear cells (PBMC) using N-CWS as stimulant was observed with a high level of activity for a long period, 5 hr. Mitogenic effect of N-CWS to PBMC was observed in the presence of macrophages but not without macrophages. Furthermore, interleukin 2 activity was recognized in supernatant of PBMC cultured with N-CWS. Maximum cytotoxic T lymphocyte response was induced when PBMC were cultured with 0.1 micrograms/ml of N-CWS.
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