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“Activated” monocytes in gastric cancer patients

I. Increased Fc receptor expression, antibody-dependent cellular cytotoxicity and NBT reduction

  • Original Papers
  • Experimental Oncology
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Journal of Cancer Research and Clinical Oncology Aims and scope Submit manuscript

Summary

The Fc receptor expression, antibody-dependent cellular cytotoxicity (ADCC), and nitro-blue tetrazolium (NBT) reduction of peripheral blood monocytes from 150 patients with different stages of gastric cancer was assessed and compared with results obtained in 77 normal persons and 104 patients with non-malignant diseases of the gut. Monocytes of cancer patients showed an increased ability to form rosettes with human 0, Rh+ erythrocytes coated with D-specific antibody. ADCC and NBT reduction were also elevated but no correlation was found with the stage of disease. However, all these phenomena were related to the tumor load as elevated values were the same 4–6 months after surgery in the unresectable-tumor group, while they decreased in patients with resectable tumors. These observations suggest that monocytes of some cancer patients are functionally altered (“activated”) in the course of disease.

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Abbreviations

AC:

adherent cells

ADCC:

antibody-dependent cellular cytoxicity

51Cr:

sodium chromate

EAhu :

antibody-coated human erythrocytes

EAhu-RFC:

cells forming rosettes with EAhu

FCS:

foetal calf serum

MEM:

minimum essential medium

NBT:

nitroblue tetrazolium

NR:

neutral red

NSE:

non-specific esterase

O.D.:

optical density

PBM:

peripheral blood mononuclear cells

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Uracz, W., Pituch-Noworolska, A., Zembala, M. et al. “Activated” monocytes in gastric cancer patients. J Cancer Res Clin Oncol 104, 181–190 (1982). https://doi.org/10.1007/BF00402066

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  • DOI: https://doi.org/10.1007/BF00402066

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