Phillips Timothy D, Wang Meichen, Elmore Sarah E, Hearon Sara, Wang Jia-Sheng
Veterinary Integrative Biosciences Department, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas 77843, USA.
Environmental Toxicology Department, University of California, Davis, California 95616, USA.
Clays Clay Miner. 2019 Feb;67(1):99-110. doi: 10.1007/s42860-019-0008-x. Epub 2019 Apr 5.
Aflatoxin contamination of diets results in disease and death in humans and animals. The objective of the present paper was to review the development of innovative enterosorption strategies for the detoxification of aflatoxins. NovaSil clay (NS) has been shown to decrease exposures to aflatoxins and prevent aflatoxicosis in a variety of animals when included in their diets. Results have shown that NS clay binds aflatoxins with high affinity and high capacity in the gastrointestinal tract, resulting in a notable reduction in the bioavailability of these toxins without interfering with the utilization of vitamins and other micronutrients. This strategy is already being utilized as a potential remedy for acute aflatoxicosis in animals, and as a sustainable intervention diet. Animal and human studies have confirmed the apparent safety of NS and refined NS clay (with uniform particle size). Studies in Ghanaians at high risk of aflatoxicosis have indicated that NS (at a dose level of 0.25% w/w) is effective at decreasing biomarkers of aflatoxin exposure and does not interfere with levels of serum vitamins A and E, or iron or zinc. A new spinoff of this strategy is the development and use of broad-acting sorbents for the mitigation of environmental chemicals and microbes during natural disasters and emergencies. In summary, enterosorption strategies/therapies based on NS clay are promising for the management of aflatoxins and as sustainable public health interventions. The NS clay remedy is novel, inexpensive, and easily disseminated.
膳食中的黄曲霉毒素污染会导致人类和动物患病及死亡。本文的目的是综述用于黄曲霉毒素解毒的创新肠吸附策略的发展情况。已表明,诺娃硅土(NS)添加到各种动物的日粮中时,可减少黄曲霉毒素暴露并预防黄曲霉毒素中毒。结果显示,NS硅土在胃肠道中以高亲和力和高容量结合黄曲霉毒素,导致这些毒素的生物利用度显著降低,且不干扰维生素和其他微量营养素的利用。该策略已被用作动物急性黄曲霉毒素中毒的潜在治疗方法,以及一种可持续的干预性饮食。动物和人体研究已证实NS和精制NS硅土(粒径均匀)明显安全。对黄曲霉毒素中毒高风险的加纳人的研究表明,NS(剂量水平为0.25% w/w)可有效降低黄曲霉毒素暴露的生物标志物,且不干扰血清维生素A、E、铁或锌的水平。该策略的一个新衍生成果是开发和使用广谱吸附剂,以减轻自然灾害和紧急情况期间环境化学物质和微生物的影响。总之,基于NS硅土的肠吸附策略/疗法在黄曲霉毒素管理方面以及作为可持续的公共卫生干预措施很有前景。NS硅土疗法新颖、廉价且易于推广。