비장과 흉선의 림프세포와 LPS에 의해 유도된 사이토카인의 발현에 대한 수은의 영향

• 영문명: Oral Exposure to Mercury Alters T Lymphocyte Phenotypes and Augments LPS-induced Cytokine Expressions in Spleen and Thymus
• 발행기관: 대한약학회
• 저자명: 김상현(Sang-Hyun Kim) 최철희(Cheol-Hee Choi) 임종필(Jong-Pil Lim) 신태용(Tae-Yong Shin)
• 간행물 정보: 『약학회지』제48권 제4호 (2004년), 241~246쪽, 전체 6쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2004.08.31

영문 초록

Mercury is a widespread metal and consequently there are large populations that currently exposed to low levels of mercury. Endotoxin is a component of the gram- negative bacteria and promotes inflammatory responses. The present study was designed to determine the impact of mercury on lymphocytes phenotype populations and endotoxin- induced inflammatory cytokine expressions in immune organ, spleen and thymus. Male BALB/C mice were exposed continuously to 0, 0.3, 1.5, 7.5, or 37.5 ppm of mercuric chloride in drinking water for 14 days and at the end of the treatment period, lipopolysaccharide (LPS, 0.5 mg/kg) was injected intraperitoneally 2 h prior to euthanasia. The dose-range of mercury used did not cause hepatotoxicity, Mercury at 7.5 and 37.5 ppm dose-dependently decreased CD3+ T lymphocytes in spleen; both CD4+ and CD8+ single positive lymphocyte populations were decreased. Exposure to 7.5 and 37.5 ppm of mercury decreased the CD8+ T lymphocyte population in the thymus, whereas double positive CD4+/CD8+ and CD4+ thymocytes were not altered. Mercury altered LPS-induced inflammatory cytokine gene expressions such as, tumor necrosis factor α, interferon γ, and interleukin-12 in spleen and thymus. Results indicated that decreases in T lymphocyte populations in immune organs and altered frtokine gene expression may contribute to the immune-modulative effects of inorganic mercury.

키워드

mercury LPS T lymphocyte drinking water inflammatory cytokine immune-modulation