National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
Clin Nutr. 2012 Dec;31(6):967-73. doi: 10.1016/j.clnu.2012.04.015. Epub 2012 May 17.
BACKGROUND & AIMS: The aim of present study was to compare the levels of essential trace and toxic elements in biological samples (blood, serum and scalp hair) of female liver cirrhotic/cancer patients (n = 132), of two age groups (20-45 years) and (46-60 years), before and after sixty days treatment with mineral supplementation. For comparison purpose, same biological samples were also collected from healthy female subjects (n = 75) of same age groups.
The biological samples were oxidized by 65% HNO(3): 30% H(2)O(2) (2:1) in microwave oven. The digests of all biological samples were analyzed for arsenic (As), cadmium (Cd), selenium (Se) and zinc (Zn) by electrothermal atomic absorption spectrometry.
The levels of Se and Zn were lower in liver cirrhotic/cancer patients as compared to healthy individuals (p < 0.001). The patients of liver cirrhosis/cancer have two folds higher As and Cd levels in biological samples as related to age matched referents. Moreover, negative correlation was observed between essential and toxic elements.
The pathogenesis of liver cirrhosis/cancer has been associated with changes in the balance of certain essential trace and toxic elements. It was observed that the status of Se and Zn in addition to some biochemical parameters was improved in biological samples of both groups of patients after sixty days treatment with mineral supplementation.
本研究旨在比较生物样本(血液、血清和头皮头发)中必需微量元素和有毒元素水平,这些样本来自于女性肝硬化/癌症患者(n=132),分为两个年龄组(20-45 岁)和(46-60 岁),并在接受 60 天矿物质补充治疗前后进行比较。为了进行比较,还从相同年龄组的健康女性受试者(n=75)中采集了相同的生物样本。
将生物样本在微波炉中用 65%HNO(3):30%H(2)O(2)(2:1)氧化。所有生物样本的消化物均用电热原子吸收光谱法分析砷(As)、镉(Cd)、硒(Se)和锌(Zn)的含量。
与健康个体相比,肝硬化/癌症患者的 Se 和 Zn 水平较低(p<0.001)。肝硬化/癌症患者的生物样本中 As 和 Cd 水平是年龄匹配参考值的两倍。此外,必需微量元素和有毒元素之间存在负相关关系。
肝硬化/癌症的发病机制与某些必需微量元素和有毒元素平衡的变化有关。观察到,两组患者在接受 60 天矿物质补充治疗后,除了某些生化参数外,生物样本中的 Se 和 Zn 状态得到了改善。