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Chemical imaging and assessment of cadmium distribution in the human body.
Metallomics ( IF 2.9 ) Pub Date : 2019-12-11 , DOI: 10.1039/c9mt00178f
Alexander E Egger 1 , Gerlinde Grabmann , Can Gollmann-Tepeköylü , Elisabeth J Pechriggl , Christian Artner , Adrian Türkcan , Christian G Hartinger , Helga Fritsch , Bernhard K Keppler , Erich Brenner , Michael Grimm , Barbara Messner , David Bernhard
Affiliation  

The scientific interest in cadmium (Cd) as a human health damaging agent has significantly increased over the past decades. However, particularly the histological distribution of Cd in human tissues is still scarcely defined. Using inductively coupled plasma-mass spectrometry (ICP-MS), we determined the concentration of Cd in 40 different human tissues of four body donors and provided spatial information by elemental imaging on the microscopic distribution of Cd in 8 selected tissues by laser ablation (LA)-ICP-MS. ICP-MS results show that Cd concentrations differ by a factor of 20 000 between different tissues. Apart from the well know deposits in kidney, bone, and liver, our study provides evidence that muscle and adipose tissue are underestimated Cd pools. For the first time, we present spatially resolved Cd distributions in a broad panel of human soft tissues. The defined histological structures are mirrored by sharp cut differences in Cd concentrations between neighboring tissue types, particularly in the rectum, testis, and kidneys. The spatial resolution of the Cd distribution at microscopic level visualized intratissue hot spots of Cd accumulation and is suggested as a powerful tool to elucidate metal based toxicity at histological level.

中文翻译:

化学成像和人体中镉分布的评估。

在过去的几十年中,人们对镉(Cd)作为一种危害人体健康的药物的科学兴趣显着增加。但是,尤其仍然很少定义人体组织中Cd的组织学分布。使用电感耦合等离子体质谱法(ICP-MS),我们确定了四个身体供体的40个不同人体组织中Cd的浓度,并通过元素成像对通过激光消融(LA)在8个选定组织中Cd的微观分布进行了元素成像,从而提供了空间信息)-ICP-MS。ICP-MS结果表明,不同组织之间的镉浓度相差2万倍。除了众所周知的在肾脏,骨骼和肝脏中的沉积物外,我们的研究还提供了证据表明肌肉和脂肪组织被低估了Cd池。首次,我们目前在人类软组织的广泛面板中的空间分辨Cd分布。相邻组织类型之间,尤其是直肠,睾丸和肾脏中,Cd浓度的锐减差异反映了明确的组织学结构。Cd分布在微观水平上的空间分辨率可视化了Cd积累的组织内热点,并被认为是在组织学水平上阐明基于金属的毒性的有力工具。
更新日期:2019-12-11
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