首页> 外文期刊>Romanian Journal of Biophysics >CADMIUM AND SOFT LASER RADIATION EFFECTS ON HUMAN T CELLS VIABILITY AND DEATH STYLE CHOICES
【24h】

CADMIUM AND SOFT LASER RADIATION EFFECTS ON HUMAN T CELLS VIABILITY AND DEATH STYLE CHOICES

机译:镉和软激光辐射对人类T细胞活力和死亡方式的选择

获取原文
       

摘要

We investigated the effects of low power 830 nm near-infrared laser light and of the highly toxic environmental pollutant cadmium (Cd++) on cultured human peripheral blood lymphocytes and acute leukemia Jurkat T cells viability, proliferation and preferred death form. Our data indicate that Cd++ induces decrease in viability and survival / proliferation of both human peripheral blood mononuclear cells (PBMC) and of Jurkat cells in a concentration and exposure time dependent manner. The effects are more substantial in serum starvation or growth factor lack caused stress conditions. Cd++ induces either apoptosis or necrosis in human T cells depending on the cadmium concentration, duration of exposure, and cells microenvironment. At low concentrations of cadmium, exposed cells die exclusively / prevailingly by apoptosis, while at increasing cadmium concentrations demise occurs both by apoptosis and necrosis, necrotic death becoming dominant at high concentrations of cadmium in stress conditions. The 830 nm laser light decreases PBMC viability in growth factor lack induced stress conditions, and impedes cell death in presence of growth factors. Low level near infrared laser irradiation enhances cadmium effects in lack of growth factors, but offers some protection to human PBMC in presence of growth factors.
机译:我们研究了低功率830 nm近红外激光和剧毒环境污染物镉(Cd ++)对培养的人外周血淋巴细胞和急性白血病Jurkat T细胞活力,增殖和首选死亡形式的影响。我们的数据表明,Cd ++以浓度和暴露时间依赖性方式诱导人外周血单个核细胞(PBMC)和Jurkat细胞活力和存活/增殖降低。在血清饥饿或生长因子缺乏引起的应激条件下,这种作用更为明显。 Cd ++会诱导人体T细胞凋亡或坏死,具体取决于镉浓度,暴露时间和细胞微环境。在低浓度的镉下,暴露的细胞仅/主要因凋亡而死亡,而在镉浓度增加时,凋亡和坏死都导致死亡,坏死在高浓度的镉下在应激条件下占主导地位。 830 nm激光在缺乏诱导的应激条件的生长因子中降低了PBMC的活力,并在存在生长因子的情况下阻止了细胞死亡。在缺乏生长因子的情况下,低水平的近红外激光辐照会增强镉的作用,但是在存在生长因子的情况下,对人PBMC可以提供一定的保护。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号