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Mycotoxin exposure and adverse reproductive health outcomes in Africa: a review

In: World Mycotoxin Journal
Authors:
U.A. Eze School of Food Science and Nutrition, Food Science Building, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom.
Department of Medical Laboratory Sciences, Faculty of Health Sciences, Ebonyi State University, P.M.B. 053, Abakaliki, Nigeria.
Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom.

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M.N. Routledge Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom.

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F.E. Okonofua University of Medical Sciences, Ondo Medical Village, Laje Road, Ondo, Nigeria.
Centre of Excellence in Reproductive Health Innovation [CERHI], University of Benin, P.M.B 1154, Benin City, Nigeria.

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J. Huntriss Division of Reproduction and Early Development, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom.

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Y.Y. Gong School of Food Science and Nutrition, Food Science Building, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom.
Department of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Ministry of Health, 7 Panjiayuan Nanli, Chaoyang District, Beijing 100021, China P.R.

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It is well established that mycotoxin exposure can have adverse effects on reproductive health resulting to poor reproductive potential. The most studied mycotoxin in relation to poor reproductive health in humans is aflatoxin, although fumonisins, trichothecenes and zearalenone have also been reported to impair reproductive function and cause abnormal foetal development. These potent fungal toxins contaminate many food products making them a prominent agricultural, food safety and public health challenge, especially in Africa due to little or lack of mycotoxin regulation in agricultural products. Neonates can be exposed to aflatoxinsin utero, as the toxins pass from mother to the foetus through the placenta. This exposure may continue during breast feeding, to the introduction of weaning foods, and then foods taken by adults. The consequences of aflatoxin exposure in mothers, foetus and children are many, including anaemia in pregnancy, low birth weight, interference with nutrient absorption, suppression of immune function, child growth retardation and abnormal liver function. In males, reports have indicated a possible relationship between aflatoxin exposure and poor sperm quality culminating in infertility. Maternal exposure to fumonisin during early pregnancy has been associated with increased risk of neural tube defects among newborns in regions where maize is the common dietary staple with the possibility of chronic fumonisin exposure. Furthermore, zearalenone has been linked to precocious puberty and premature thelarche in girls, correlating with extremely high serum oestrogen levels. This review presents an overview of the several reports linking aflatoxins, fumonisins, trichothecenes, and zearalenone exposure to poor reproductive health outcomes in Africa, with emphasis on birth outcomes, foetal health and infertility.

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