Oxidative stress by visible light irradiation suppresses immunoglobulin production in mouse spleen lymphocytes

Yoshiyuki Miyazaki, Masao Yamasaki, Hiroko Mishima, Keiko Mansho, Hirofumi Tachibana, Koji Yamada

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this study, we attempted to induce the oxidative stress in mouse spleen lymphocytes with visible light irradiation and examined the effects of lipid peroxidation on immunoglobulin (Ig) production. The spleen lymphocytes were isolated from 8-week-old male balb/c mice and irradiated with 300 W visible light. When the cells were cultured for 72 hr, Ig contents in culture supernatants were decreased gradually by irradiation for over 30 min. The cell viability was also lowered by the irradiation. Intracellular phosphatidylcholine hydroperoxide (PCOOH) levels and thiobarbituric acid-reactive substances (TBARS) values in culture supernatants were measured as indices of lipid peroxidation and we found that Ig production by mouse spleen lymphocytes was suppressed accompanied with the progress of peroxidation of intracellular phospholipids. Cell membrane fluidity was also significantly decreased, but the intracellular Ig level was not changed in the irradiated cells. These results suggest that the peroxidation of intracellular lipids is a cause of the suppression of Ig production by mouse spleen lymphocytes via lowering cell viability and suppressing Ig synthesis and secretion.

Original languageEnglish
Pages (from-to)593-598
Number of pages6
JournalBioscience, Biotechnology and Biochemistry
Volume65
Issue number3
DOIs
Publication statusPublished - Mar 1 2001

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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