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Kościelecka K, Kuć A, Kubik-Machura D, Męcik-Kronenberg T, Włodarek J, Radko L. Endocrine Effect of Some Mycotoxins on Humans: A Clinical Review of the Ways to Mitigate the Action of Mycotoxins. Toxins (Basel) 2023; 15:515. [PMID: 37755941 PMCID: PMC10535190 DOI: 10.3390/toxins15090515] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/10/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
Fungi such as Aspergillus spp. and Fusarium spp., which are commonly found in the environment, pose a serious global health problem. This study aims to present the results of epidemiological studies, including clinical cases, on the relationship between human exposure to some mycotoxins, especially zearalenone and aflatoxin, and the occurrence of reproductive disorders. In addition, examples of methods to reduce human exposure to mycotoxins are presented. In March 2023, various databases (PubMed, Google Scholar, EMBASE and Web of Science) were systematically searched using Google Chrome to identify studies evaluating the association between exposure to mycotoxins and the occurrence of complications related to impaired fertility or cancer incidence. The analysed data indicate that exposure to the evaluated mycotoxins is widespread and correlates strongly with precocious puberty, reduced fertility and increased cancer incidence in women and men worldwide. There is evidence to suggest that exposure to the Aspergillus mycotoxin aflatoxin (AF) during pregnancy can impair intrauterine foetal growth, promote neonatal jaundice and cause perinatal death and preterm birth. In contrast, exposure to the Fusarium mycotoxin zearalenone (ZEA) leads to precocious sexual development, infertility, the development of malformations and the development of breast cancer. Unfortunately, the development of methods (biological, chemical or physical) to completely eliminate exposure to mycotoxins has limited practical application. The threat to human health from mycotoxins is real and further research is needed to improve our knowledge and specific public health interventions.
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Affiliation(s)
- Klaudia Kościelecka
- Department of Pathomorphology, Faculty of Medical Sciences in Zabrze, 3 Maja St. 13, 41-800 Zabrze, Poland; (K.K.); (A.K.); (D.K.-M.)
| | - Aleksandra Kuć
- Department of Pathomorphology, Faculty of Medical Sciences in Zabrze, 3 Maja St. 13, 41-800 Zabrze, Poland; (K.K.); (A.K.); (D.K.-M.)
| | - Daria Kubik-Machura
- Department of Pathomorphology, Faculty of Medical Sciences in Zabrze, 3 Maja St. 13, 41-800 Zabrze, Poland; (K.K.); (A.K.); (D.K.-M.)
| | - Tomasz Męcik-Kronenberg
- Department of Pathomorphology, Faculty of Medical Sciences in Zabrze, 3 Maja St. 13, 41-800 Zabrze, Poland; (K.K.); (A.K.); (D.K.-M.)
| | - Jan Włodarek
- Department of Preclinical Sciences and Infectious Diseases, Faculty of Veterinary Medicine and Animal Sciences, Poznan University of Life Sciences, Wolynska St. 35, 60-637 Poznan, Poland;
| | - Lidia Radko
- Department of Preclinical Sciences and Infectious Diseases, Faculty of Veterinary Medicine and Animal Sciences, Poznan University of Life Sciences, Wolynska St. 35, 60-637 Poznan, Poland;
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Lootens O, Vermeulen A, Croubels S, De Saeger S, Van Bocxlaer J, De Boevre M. Possible Mechanisms of the Interplay between Drugs and Mycotoxins-Is There a Possible Impact? Toxins (Basel) 2022; 14:toxins14120873. [PMID: 36548770 PMCID: PMC9787578 DOI: 10.3390/toxins14120873] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/07/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022] Open
Abstract
Mycotoxin contamination is a global food safety issue leading to major public health concerns. Repeated exposure to multiple mycotoxins not only has repercussions on human health but could theoretically also lead to interactions with other xenobiotic substances-such as drugs-in the body by altering their pharmacokinetics and/or pharmacodynamics. The combined effects of chronic drug use and mycotoxin exposure need to be well understood in order to draw valid conclusions and, in due course, to develop guidelines. The aim of this review is to focus on food contaminants, more precisely on mycotoxins, and drugs. First, a description of relevant mycotoxins and their effects on human health and metabolism is presented. The potential for interactions of mycotoxins with drugs using in vitro and in vivo animal experiments is summarized. Predictive software tools for unraveling mycotoxin-drug interactions are proposed and future perspectives on this emerging topic are highlighted with a view to evaluate associated risks and to focus on precision medicine. In vitro and in vivo animal studies have shown that mycotoxins affect CYP450 enzyme activity. An impact from drugs on mycotoxins mediated via CYP450-enzymes is plausible; however, an impact of mycotoxins on drugs is less likely considering the much smaller dose exposure to mycotoxins. Drugs that are CYP450 perpetrators and/or substrates potentially influence the metabolism of mycotoxins, metabolized via these CYP450 enzymes. To date, very little research has been conducted on this matter. The only statistically sound reports describe mycotoxins as victims and drugs as perpetrators in interactions; however, more analysis on mycotoxin-drug interactions needs to be performed.
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Affiliation(s)
- Orphélie Lootens
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- Laboratory of Medical Biochemistry and Clinical Analysis, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- MYTOX-SOUTH, International Thematic Network, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- Correspondence: (O.L.); (M.D.B.)
| | - An Vermeulen
- Laboratory of Medical Biochemistry and Clinical Analysis, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Siska Croubels
- MYTOX-SOUTH, International Thematic Network, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- Laboratory of Pharmacology and Toxicology, Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - Sarah De Saeger
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- MYTOX-SOUTH, International Thematic Network, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- Department of Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Gauteng 2028, South Africa
| | - Jan Van Bocxlaer
- Laboratory of Medical Biochemistry and Clinical Analysis, Department of Bioanalysis, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Marthe De Boevre
- Centre of Excellence in Mycotoxicology and Public Health, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- MYTOX-SOUTH, International Thematic Network, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
- Correspondence: (O.L.); (M.D.B.)
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Kortei NK, Annan T, Dzikunoo J, Agbetiameh D. Exposure assessment and risk characterization of aflatoxins intake through consumption of maize (Zea mays) in different age populations in the Volta Region of Ghana. INTERNATIONAL JOURNAL OF FOOD CONTAMINATION 2022. [DOI: 10.1186/s40550-022-00099-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
AbstractAflatoxin contamination in foods is a vital health challenge for low and middle-income countries in subtropical regions. Maize (Zea mays L.), a staple food most widely grown in Africa including Ghana, and extensively consumed as much as three times per day, is a source of aflatoxin contamination owing to its susceptibility to fungal infection. Aflatoxin levels were checked against international (European Commission, EC) and local (Ghana Standards Authority, GSA) standards, and health risks associated with maize sampled from the Volta Region (Hohoe, Ho, Battor Dugame, and Keta) of Ghana were determined. Total aflatoxins (totalAFs) and the constituent aflatoxins (AFB1, AFB2, AFG1, and AFG2) were measured with High-Performance Liquid Chromatography (HPLC) with a Fluorescence Detector (FLD). Intake and Risk assessments were also conducted using deterministic models prescribed by the Joint FAO/WHO Expert Committee on Additives (JECFA). The degree of occurrence of aflatoxins was observed to be in decreasing order of AFG2 < AFG1 < AFB2 < AFB1 and were within the ranges of 0.78 ± 0.04 $$-$$
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234.73 ± 3.8 µg/kg, 0.47 ± 0.03 $$-$$
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21.6 ± 0.33 µg/kg, 1.01 ± 0.05 $$-$$
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13.75 ± 1.2 µg/kg and 0.66 ± 0.06 $$-$$
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5.51 ± 0.26 µg/kg respectively. Out of the 100 samples analyzed for total aflatoxins (totalAFs), 68 (68%) exceeded the limits of EC and were of range 4.98 ± 0.6 $$-$$
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445.01 ± 8.9 µg/kg whereas 58 (58%) and ranged between 12.12 ± 1.4 $$-$$
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445.01 ± 8.9 µg/kg exceeded GSA limits. Intake and risk assessments of total aflatoxins (totalAFs) for infants, toddlers, children, adolescents, and adults in the Volta Region were; 0.037–1.14 µg/kg bw/day, 0.35–10.81, and 1.47 -45.14 cases/10,000 person/yr respectively for Estimated Daily Intake (EDI), Margin of Exposure (MOE), and Cancer Risks. It was inferred that the consumption of maize posed potential adverse health effects on all age categories studied because all calculated MOE values were less than 10,000.
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Rajaura S, Chauhan P, Chandra H, Bhardwaj N. Aflatoxin B1 administration induces reactive oxygen species production and apoptosis of erythrocytes in mice. Toxicon 2022; 221:106963. [DOI: 10.1016/j.toxicon.2022.106963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/13/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
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Kotb MA, Kotb A, Talaat S, Shehata SM, El Dessouki N, ElHaddad AA, El Tagy G, Esmat H, Shehata S, Hashim M, Kotb HA, Zekry H, Abd Elkader HM, Kaddah S, Abd El Baky HE, Lotfi N. Congenital aflatoxicosis, mal-detoxification genomics & ontogeny trigger immune-mediated Kotb disease biliary atresia variant: SANRA compliant review. Medicine (Baltimore) 2022; 101:e30368. [PMID: 36181129 PMCID: PMC9524989 DOI: 10.1097/md.0000000000030368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Biliary atresia (BA) is the most common indication for pediatric liver transplantation. We describe The BA variant: Kotb disease. Liver tissue in the Kotb disease BA is massively damaged by congenital aflatoxicosis resulting in inflammation, adhesions, fibrosis, bile duct proliferation, scarring, cholestasis, focal syncytial giant cell transformation, and typical immune response involving infiltration by CD4+, CD8+, CD68+, CD14+, neutrophil infiltration, neutrophil elastase spill, heavy loads of aflatoxin B1, accelerated cirrhosis, disruption of p53 and GSTPi, and have null glutathione S transferase M1 (GSTM1). All their mothers are heterozygous for GSTM1. This inability to detoxify aflatoxicosis results in progressive inflammatory adhesions and obliterative cholangiopathy early in life. The typical disruption of both p53 and GSTPi causes loss of fidelity of hepatic regeneration. Hence, regeneration in Kotb disease BA typically promotes accelerated cirrhosis. The immune response in Kotb disease BA is for damage control and initiation of regeneration, yet, this friendly fire incurs massive structural collateral damage. The Kotb disease BA is about actual ongoing hepatic entrapment of aflatoxins with lack of ability of safe disposal due to child detoxification-genomics disarray. The Kotb disease BA is a product of the interaction of persistent congenital aflatoxicosis, genetic lack of GSTM1 detoxification, ontogenically impaired activity of other hepatic detoxification, massive neutrophil-elastase, immune-induced damage, and disturbed regeneration. Ante-natal and neonatal screening for aflatoxicosis, avoiding cord milking, and stringent control of aflatoxicosis content of human, poultry and live-stock feeds might prove effective for prevention, prompt diagnosis and management based on our recent understanding of its patho-genomics.
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Affiliation(s)
- Magd A. Kotb
- Department of Pediatrics, Faculty of Medicine, Cairo University, Egypt
- *Correspondence: (e-mail: )
| | - Ahmed Kotb
- Department of Pediatrics, Faculty of Medicine, Cairo University, Egypt
| | - Sahar Talaat
- Department of Pathology, Faculty of Medicine, Cairo University, Egypt
| | - Sherif M. Shehata
- Department of Pediatric Surgery, Faculty of Medicine, Tanta University, Egypt
| | - Nabil El Dessouki
- Department of Pediatric Surgery, Faculty of Medicine, Cairo University, Egypt
| | - Ahmed A. ElHaddad
- Department of Pediatric Surgery, Faculty of Medicine, Tanta University, Egypt
| | - Gamal El Tagy
- Department of Pediatric Surgery, Faculty of Medicine, Cairo University, Egypt
| | - Haytham Esmat
- Department of Pediatric Surgery, Faculty of Medicine, Cairo University, Egypt
| | - Sameh Shehata
- Department of Pediatric Surgery, Faculty of Medicine, Alexandria University, Egypt
| | - Mohamed Hashim
- Department of Pediatrics, Faculty of Medicine, Cairo University, Egypt
| | - Hanan A. Kotb
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, Egypt
| | - Hanan Zekry
- Department of Pediatrics, Faculty of Medicine, Cairo University, Egypt
| | | | - Sherif Kaddah
- Department of Pediatric Surgery, Faculty of Medicine, Cairo University, Egypt
| | | | - Nabil Lotfi
- Faculty of Medicine, Cairo University, Egypt
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Chen J, Ye Y, Huang D, Pan D, Qiu X, Lei L, Luo X, Li J, Wu K, Xiao S, Liu S, Zeng X. The mediating role of coagulation function on the association of prenatal exposure to aflatoxin B1 and postpartum hemorrhage in Guangxi, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:37543-37555. [PMID: 35066843 DOI: 10.1007/s11356-021-18186-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Pregnant women are vulnerable to certain environmental agents, one of which is aflatoxin. As one of the most popular aflatoxins, Aflatoxin B1 (AFB1) has recently garnered increased attention concerning its potential association between exposure and adverse pregnancy outcomes. The aims of the study were to examine the associations between prenatal exposure to AFB1 and postpartum hemorrhage (PPH), and whether coagulation function has a mediating effect on their relationship. A total of 379 mother-infant pairs were included in the present study. Prenatal serum AFB1 albumin (AFB1-Alb) adduct levels in peripheral venous blood were detected by using an ELISA kit. Multiple linear and logistics regression models were applied to analyze the relationship between AFB1-Alb levels and PPH. We found mothers with high levels of AFB1-Alb adduct levels had significantly increased postpartum blood loss (partial regression coefficient (β) = 50.71, 95% confidence interval (CI) 3.48, 97.95). Mothers with high levels of AFB1-Alb adduct levels also had significantly increased risk of PPH (odds ratio (OR) = 4.81, 95% CI 1.01, 22.98). Moreover, concentrations of AFB1-Alb were positively associated with activated partial thromboplastin time (APTT) while negatively associated with fibrinogen (FIB). One-unit increase in APTT was correlated with a 6.62-ml (95% CI 3.04, 10.20) increase in postpartum blood loss. Mediation analysis suggested that the maternal blood APTT levels had a positive mediating effect in the association between AFB1-Alb adduct levels and postpartum blood loss (β = 0.32, 95% CI 0.04, 0.68). These results indicated that prenatal exposure to AFB1 was associated with increased postpartum blood loss, possibly by interfering with maternal APTT levels.
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Affiliation(s)
- Jiehua Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Ye Ye
- Guangxi Liuzhou Iron & Steel Group Co. Ltd Center for Disease Control and Prevention, Liuzhou, 545002, Guangxi, China
| | - Dongping Huang
- Department of Sanitary Chemistry, School of Public Health, Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Dongxiang Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Xiaoqiang Qiu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Lei Lei
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Xingxi Luo
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Jinxiu Li
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Kaili Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Suyang Xiao
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Shun Liu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China.
| | - Xiaoyun Zeng
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, No. 22 Shuangyong Road, Nanning, 530021, Guangxi, China.
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Effects of Prenatal Exposure to Aflatoxin B1: A Review. Molecules 2021; 26:molecules26237312. [PMID: 34885894 PMCID: PMC8659025 DOI: 10.3390/molecules26237312] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 11/17/2022] Open
Abstract
Aflatoxins are mycotoxins produced as secondary fungal metabolites. Among them, aflatoxin B1 (AFB1) stands out due to its genotoxic and mutagenic potential, being a potent initiator of carcinogenesis. In this review, the outcomes from the published literature in the past 10 years on the effects of AFB1 pathophysiological mechanisms on embryological and fetal development are discussed. In several animal species, including humans, AFB1 has a teratogenic effect, resulting in bone malformations, visceral anomalies, lesions in several organs, and behavioral and reproductive changes, in addition to low birth weight. The mutagenic capacity of AFB1 in prenatal life is greater than in adults, indicating that when exposure occurs in the womb, the risk of the development of neoplasms is higher. Studies conducted in humans indicate that the exposure to this mycotoxin during pregnancy is associated with low birth weight, decreased head circumference, and DNA hypermethylation. However, as the actual impacts on humans are still unclear, the importance of this issue cannot be overemphasized and studies on the matter are essential.
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Lei L, Liu S, Ye Y, Qiu X, Huang D, Pan D, Chen J, Qian Z, McMillin SE, Vaughn MG, Luo X, Wu K, Xiao S, Li J, Liu M, Yang Y, Lai M, Dong G, Zeng X. Associations between Serum Aflatoxin-B1 and Anemia in Pregnant Women: Evidence from Guangxi Zhuang Birth Cohort in China. Toxins (Basel) 2021; 13:toxins13110806. [PMID: 34822590 PMCID: PMC8618761 DOI: 10.3390/toxins13110806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 12/21/2022] Open
Abstract
Aflatoxin B1 (AFB1) is a common toxic mycotoxin and is detectable in pregnant women. Animal studies have revealed that AFB1 caused the lysis of erythrocytes and a decrease in hemoglobin. We conducted a prospective cohort study in Guangxi, China, in order to evaluate the association between AFB1 exposure and anemia in pregnant women during the entire pregnancy. A total of 616 pregnant women from the Guangxi Zhuang Birth Cohort were included in the study. Serum AFB1-albumin (AFB1-ALB) adduct levels were measured. The effect of AFB1-ALB adducts on hemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) were analyzed by using multivariable linear regression. The risks of anemia from AFB1-ALB adduct exposure were assessed by multivariable logistic regression. We found that the AFB1-ALB adduct was significantly associated with a decrease in Hb (β = −4.99, 95% CI: −8.42, −1.30), MCV (β = −4.58, 95% CI: −7.23, −1.94), MCH (β = −1.86, 95% CI: −2.87, −0.85), and MCHC (β = −5.23, 95% CI: −8.28, −2.17) in the first trimester with the third tertile of AFB1-ALB adducts when compared with the first tertile. Furthermore, the third tertile of the AFB1-ALB adduct significantly increased the risk of anemia by 2.90 times than compared to the first tertile in the first trimester (OR = 3.90, 95% CI: 1.67, 9.14). A significant positive does–response relationship existed between AFB1-ALB adduct levels and anemia risk (Ptrend = 0.001). When dividing anemia types, we only found that the third tertile of AFB1-ALB adduct increased the risk of microcytic hypochromic anemia (MHA) in the first trimester (OR = 14.37, 95% CI: 3.08, 67.02) and second trimester (OR = 4.75, 95% CI: 1.96, 11.51). These findings demonstrate the correlation between maternal AFB1 exposure during early pregnancy and risk of anemia, especially MHA, and during different trimesters in Southern China. More efforts should be made to diminish AFB1 exposure for pregnant women.
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Affiliation(s)
- Lei Lei
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Shun Liu
- Department of Maternal, Child and Adolescent Health, School of Public Health, Guangxi Medical University, Nanning 530021, China;
| | - Ye Ye
- Center for Disease Control and Prevention, Guangxi Liuzhou Iron & Steel Group Co., Ltd., Liuzhou 545002, China;
| | - Xiaoqiang Qiu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Dongping Huang
- Department of Sanitary Chemistry, School of Public Health, Guangxi Medical University, Nanning 530021, China;
| | - Dongxiang Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Jiehua Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Zhengmin Qian
- Department of Epidemiology and Biostatistics, College for Public Health & Social Justice, Saint Louis University, St. Louis, MO 63103, USA;
| | - Stephen Edward McMillin
- School of Social Work, College for Public Health & Social Justice, Saint Louis University, St. Louis, MO 63103, USA; (S.E.M.); (M.G.V.)
| | - Michael G. Vaughn
- School of Social Work, College for Public Health & Social Justice, Saint Louis University, St. Louis, MO 63103, USA; (S.E.M.); (M.G.V.)
| | - Xingxi Luo
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Kaili Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Suyang Xiao
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Jinxiu Li
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Meiliang Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Yu Yang
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Mingshuang Lai
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
| | - Guanghui Dong
- Department of Environmental and Occupational Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
- Correspondence: (G.D.); (X.Z.)
| | - Xiaoyun Zeng
- Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China; (L.L.); (X.Q.); (D.P.); (J.C.); (X.L.); (K.W.); (S.X.); (J.L.); (M.L.); (Y.Y.); (M.L.)
- Correspondence: (G.D.); (X.Z.)
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Nicholaus C, Martin H, Matemu A, Kimiywe J, Kassim N. Risks of aflatoxin exposure among adolescents in boarding schools in Kilimanjaro region, Tanzania. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2020.2570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
School feeding in low-income countries is dominated by cereals and legumes, which are susceptible to aflatoxin contamination but are usually not assessed for aflatoxins. A cross sectional study was conducted to assess aflatoxin exposure among adolescents through consumption of school meals in Kilimanjaro region. Food frequency questionnaires and 24 h dietary recalls were used to collect information on food consumption. At least four samples of common food used in school meals were collected. A deterministic approach was used to estimate the dietary aflatoxin exposure. High Performance Liquid chromatography (HPLC) was used to analyse presence of aflatoxin contamination. Results showed that, maize based food and beans were consumed on daily basis. The intake of maize flour and dehulled maize ranged from 17.5 to 738.2 g and 28.2 to 272 g per person per day respectively. Furthermore, consumption of beans and rice were in the range of 121.1 to 595.2 g and 15.7 to 42.2 g per person per day respectively. Total aflatoxins ranged 0.20-438.53 μg/kg (median 2.30 μg/kg). The highest contamination range (0.59-438.53 μg/kg) was in maize while the lowest (0.20-3.41 μg/kg) was found in rice. Similarly, the highest aflatoxin B1 (AFB1) concentration (35.88 μg/kg) was in dehulled maize while the lowest (0.44 μg/kg) was in rice. The highest dietary exposure to total aflatoxins and AFB1 due to consumption of maize ranged from 0.70 to 973.45 ng/kg/bodyweight (bw)/day, and from 0.05-81.06 ng/kg/bw/day, respectively. This pronounced risk of exposure to aflatoxins might have been contributed by a monotonous maize based diet in boarding schools. These findings call for institutions immediate interventions, such as the use of appropriate storage technologies, sorting, cleaning and winnowing in order to remove damaged grains, thereby reducing the risk of dietary exposure to aflatoxins. Likewise, the relevant ministries should consider food diversification and routine risk assessments of the susceptible crops throughout the value chain as a long-term intervention plan at policy level.
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Affiliation(s)
- C. Nicholaus
- Department of Food Biotechnology and Nutrition Sciences, Nelson Mandela African Institution of Science and Technology, P.O. Box 447 Arusha, Tanzania
| | - H.D. Martin
- Department of Food Biotechnology and Nutrition Sciences, Nelson Mandela African Institution of Science and Technology, P.O. Box 447 Arusha, Tanzania
| | - A. Matemu
- Department of Food Biotechnology and Nutrition Sciences, Nelson Mandela African Institution of Science and Technology, P.O. Box 447 Arusha, Tanzania
| | - J. Kimiywe
- Department of Food, Nutrition and Dietetics, Kenyatta University, P.O. Box 43844-00100, Nairobi, Kenya
| | - N. Kassim
- Department of Food Biotechnology and Nutrition Sciences, Nelson Mandela African Institution of Science and Technology, P.O. Box 447 Arusha, Tanzania
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10
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Lactobacillus paracasei alleviates genotoxicity, oxidative stress status and histopathological damage induced by Fumonisin B1 in BALB/c mice. Toxicon 2020; 185:46-56. [DOI: 10.1016/j.toxicon.2020.06.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/19/2020] [Accepted: 06/27/2020] [Indexed: 01/17/2023]
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11
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Abstract
Pregnancy is not a disease condition; it is a physiological process. However, the risks prevail until this process ends. While many pregnancies and births culminate without any problems, a considerable number of them end up with undesirable pregnancy outcomes such as intrauterine growth retardation, preterm labor, and low birth weight infants. Although the causes of these negative pregnancy outcomes are not fully understood, they occur in a multifactorial ways. One of the important issues here is the foods consumed by women with pregnancy. Pregnant women should avoid consuming fast food products, alcohol, or tobacco, which are already known to be harmful to human health, as well as harmful natural products containing mycotoxins. Mycotoxins are natural toxins with a wide range of chemical structures. While people can get these toxins directly from agricultural products, they can also be exposed indirectly through products of animals fed with contaminated feed. Mycotoxins have negative impacts on human health with their carcinogenic, teratogenic, and mutagenic effects. There are some evidences that mycotoxins can lead to negative pregnancy outcomes. These possible negative effects have been determined to be lower birth weight, neonatal jaundice, fetal loss, fetal defects, preterm birth, maternal anemia, and preeclampsia. However, more evidence is needed on this topic. This review aims to investigate the adverse effects of mycotoxins during pregnancy.
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Affiliation(s)
| | | | - Serkan Yilmaz
- Faculty of Nursing, Department of Midwifery, University of Ankara, Ankara, Turkey.,Faculty of Health Sciences, University of Ankara, Ankara, Turkey
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12
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Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Schwerdtle T, Vleminckx C, Marko D, Oswald IP, Piersma A, Routledge M, Schlatter J, Baert K, Gergelova P, Wallace H. Risk assessment of aflatoxins in food. EFSA J 2020; 18:e06040. [PMID: 32874256 PMCID: PMC7447885 DOI: 10.2903/j.efsa.2020.6040] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
EFSA was asked to deliver a scientific opinion on the risks to public health related to the presence of aflatoxins in food. The risk assessment was confined to aflatoxin B1 (AFB1), AFB2, AFG1, AFG2 and AFM1. More than 200,000 analytical results on the occurrence of aflatoxins were used in the evaluation. Grains and grain-based products made the largest contribution to the mean chronic dietary exposure to AFB1 in all age classes, while 'liquid milk' and 'fermented milk products' were the main contributors to the AFM1 mean exposure. Aflatoxins are genotoxic and AFB1 can cause hepatocellular carcinomas (HCCs) in humans. The CONTAM Panel selected a benchmark dose lower confidence limit (BMDL) for a benchmark response of 10% of 0.4 μg/kg body weight (bw) per day for the incidence of HCC in male rats following AFB1 exposure to be used in a margin of exposure (MOE) approach. The calculation of a BMDL from the human data was not appropriate; instead, the cancer potencies estimated by the Joint FAO/WHO Expert Committee on Food Additives in 2016 were used. For AFM1, a potency factor of 0.1 relative to AFB1 was used. For AFG1, AFB2 and AFG2, the in vivo data are not sufficient to derive potency factors and equal potency to AFB1 was assumed as in previous assessments. MOE values for AFB1 exposure ranged from 5,000 to 29 and for AFM1 from 100,000 to 508. The calculated MOEs are below 10,000 for AFB1 and also for AFM1 where some surveys, particularly for the younger age groups, have an MOE below 10,000. This raises a health concern. The estimated cancer risks in humans following exposure to AFB1 and AFM1 are in-line with the conclusion drawn from the MOEs. The conclusions also apply to the combined exposure to all five aflatoxins.
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13
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Kyei NNA, Boakye D, Gabrysch S. Maternal mycotoxin exposure and adverse pregnancy outcomes: a systematic review. Mycotoxin Res 2020; 36:243-255. [PMID: 31989413 PMCID: PMC7182542 DOI: 10.1007/s12550-019-00384-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 11/29/2022]
Abstract
Mycotoxin exposure from food occurs globally but is more common in hot humid environments, especially in low-income settings, and might affect pregnancy outcomes. This study aimed to synthesize the evidence from epidemiological studies on the relationship between maternal or fetal exposure to different mycotoxins and the occurrence of adverse pregnancy outcomes. Multiple databases were systematically searched up to December 2018 to identify studies that assessed the association between mycotoxin exposure in pregnant women or fetuses and at least one pregnancy outcome. Studies were appraised and results were synthesized using standard methods for conducting systematic reviews. This review identified and included 17 relevant studies. There is some evidence to suggest that exposure to various Aspergillus mycotoxins (e.g., aflatoxin) during pregnancy may impair intrauterine fetal growth and promote neonatal jaundice. Findings were inconclusive concerning the influence of aflatoxin exposure on perinatal death and preterm birth. Only two studies assessed effects of maternal exposure to Fusarium mycotoxins (e.g., fumonisin) on adverse pregnancy outcomes. These studies found that maternal fumonisin exposure may be associated with hypertensive emergencies in pregnancy and with neural tube defects. Studies using grain farming and weather conditions as a proxy measure for mycotoxin exposure found that such exposure was associated with an increased risk of preterm birth and late-term miscarriage. In conclusion, there is already some evidence to suggest that exposure to mycotoxins during pregnancy may have detrimental effects on pregnancy outcomes. However, given the limited number of studies, especially on effects of Fusarium mycotoxins, more studies are needed for a more comprehensive understanding of the effects of different mycotoxins on maternal and fetal health and to guide public health policies and interventions.
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Affiliation(s)
- Nicholas N A Kyei
- Unit of Epidemiology and Biostatistics, Heidelberg Institute of Global Health, Heidelberg University, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany. .,Public Health Division, 37 Military Hospital, Accra, Ghana.
| | - Daniel Boakye
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 581, 69120, Heidelberg, Germany
| | - Sabine Gabrysch
- Unit of Epidemiology and Biostatistics, Heidelberg Institute of Global Health, Heidelberg University, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany.,Research Department 2, Potsdam Institute for Climate Impact Research, Potsdam, Germany.,Institute of Public Health, Charité - Universitätsmedizin Berlin, Berlin, Germany
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14
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Joubert BR, Mantooth SN, McAllister KA. Environmental Health Research in Africa: Important Progress and Promising Opportunities. Front Genet 2020; 10:1166. [PMID: 32010175 PMCID: PMC6977412 DOI: 10.3389/fgene.2019.01166] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 10/23/2019] [Indexed: 12/16/2022] Open
Abstract
The World Health Organization in 2016 estimated that over 20% of the global disease burden and deaths were attributed to modifiable environmental factors. However, data clearly characterizing the impact of environmental exposures and health endpoints in African populations is limited. To describe recent progress and identify important research gaps, we reviewed literature on environmental health research in African populations over the last decade, as well as research incorporating both genomic and environmental factors. We queried PubMed for peer-reviewed research articles, reviews, or books examining environmental exposures and health outcomes in human populations in Africa. Searches utilized medical subheading (MeSH) terms for environmental exposure categories listed in the March 2018 US National Report on Human Exposure to Environmental Chemicals, which includes chemicals with worldwide distributions. Our search strategy retrieved 540 relevant publications, with studies evaluating health impacts of ambient air pollution (n=105), indoor air pollution (n = 166), heavy metals (n = 130), pesticides (n = 95), dietary mold (n = 61), indoor mold (n = 9), per- and polyfluoroalkyl substances (PFASs, n = 0), electronic waste (n = 9), environmental phenols (n = 4), flame retardants (n = 8), and phthalates (n = 3), where publications could belong to more than one exposure category. Only 23 publications characterized both environmental and genomic risk factors. Cardiovascular and respiratory health endpoints impacted by air pollution were comparable to observations in other countries. Air pollution exposures unique to Africa and some other resource limited settings were dust and specific occupational exposures. Literature describing harmful health effects of metals, pesticides, and dietary mold represented a context unique to Africa. Studies of exposures to phthalates, PFASs, phenols, and flame retardants were very limited. These results underscore the need for further focus on current and emerging environmental and chemical health risks as well as better integration of genomic and environmental factors in African research studies. Environmental exposures with distinct routes of exposure, unique co-exposures and co-morbidities, combined with the extensive genomic diversity in Africa may lead to the identification of novel mechanisms underlying complex disease and promising potential for translation to global public health.
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Affiliation(s)
- Bonnie R Joubert
- National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, United States
| | | | - Kimberly A McAllister
- National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC, United States
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15
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Díaz de León-Martínez L, Díaz-Barriga F, Barbier O, Ortíz DLG, Ortega-Romero M, Pérez-Vázquez F, Flores-Ramírez R. Evaluation of emerging biomarkers of renal damage and exposure to aflatoxin-B 1 in Mexican indigenous women: a pilot study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:12205-12216. [PMID: 30835068 DOI: 10.1007/s11356-019-04634-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 02/19/2019] [Indexed: 05/18/2023]
Abstract
Aflatoxins (AFs) are mycotoxins produced by Aspergillus parasiticus and Aspergillus flavus which frequently contaminate maize. These compounds are considered toxic, especially AFB1 which has been classified as a human carcinogen, due to its relationship with the generation of hepatocellular carcinoma. Studies in vivo, in animal models, prove that chronic consumption of AFB1 has an association with renal adverse effects, but evidence in humans is scarce. Therefore, the main objective of this research was to conduct a pilot study to evaluate the correlation between exposure to AFB1 and early-stage renal damage in indigenous women of San Luis Potosí, Mexico. Exposure to AFB1 was measured through the biomarker AFB1-lysine and renal damage through kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), and cystatin-C (Cys-C). AFB1-Lys was measured by HPLC-FLD. The method was validated with a correlation coefficient of 0.99 and limit of detection and quantification of 3.5 and 4.7 pg mL-1, respectively. Levels of NGAL, KIM-1, and Cys-C were determined (median (P25-P75), 5.96 (3.16-15.91), 0.137 (0.137-0.281), and 18.49 (5.76-29.57) ng mL-1, respectively). Additionally, glomerular filtration rate (GFR) (83.3 (59.8-107.4) mL/min/1.73 m2) and serum creatinine (SCr) (0.88 (0.72-1.22) mg dL-1) were obtained. The median concentrations for AFB1-Lys were 2.08 (1.89-5.8) pg mg-1 of albumin. Statistically significant correlations between AFB1-Lys/KIM-1 (Rho = 0.498, p = 0.007) and AFB1/Cys-C (Rho = 0.431, p = 0.014) were found. Our results indicate that women are exposed to AFB1, due to the fact that the AFB1-Lys biomarker was found in a high percentage of the study population (83%). In addition, the results of exposure to AFB1 show a strong significant correlation between KIM-1 and Cys-C that may indicate the toxic renal effect. These results are alarming because of the high toxicity of this compound and require adequate intervention to reduce AFB1 exposure in these populations.
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Affiliation(s)
- Lorena Díaz de León-Martínez
- Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
| | - Fernando Díaz-Barriga
- Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
| | - Olivier Barbier
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados-Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Dora Linda Guzmán Ortíz
- Departamento de Biotecnología y Bioquímica Centro de Investigación de Estudios Avanzados del -Instituto Politécnico Nacional (CINVESTAV-IPN), Campus Guanajuato, Irapuato, Mexico
| | - Manolo Ortega-Romero
- Departamento de Toxicología, Centro de Investigación y de Estudios Avanzados-Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico City, Mexico
| | - Francisco Pérez-Vázquez
- Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico
| | - Rogelio Flores-Ramírez
- CONACYT Research Fellow, Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología (CIACYT), Avenida Sierra Leona No. 550, Colonia Lomas Segunda Sección, 78210, San Luis Potosí, SLP, Mexico.
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16
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Ayofemi Olalekan Adeyeye S. Aflatoxigenic fungi and mycotoxins in food: a review. Crit Rev Food Sci Nutr 2019; 60:709-721. [DOI: 10.1080/10408398.2018.1548429] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Samuel Ayofemi Olalekan Adeyeye
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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17
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Opoku N, Achaglinkame MA, Amagloh FK. Aflatoxin content in cereal-legume blends on the Ghanaian market far exceeds the permissible limit. Food Secur 2018. [DOI: 10.1007/s12571-018-0849-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Eze U, Routledge M, Okonofua F, Huntriss J, Gong Y. Mycotoxin exposure and adverse reproductive health outcomes in Africa: a review. WORLD MYCOTOXIN J 2018. [DOI: 10.3920/wmj2017.2261] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
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 aflatoxins in 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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Affiliation(s)
- 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
| | - M.N. Routledge
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Woodhouse Ln, Leeds LS2 9JT, United Kingdom
| | - 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
| | - 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
| | - 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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19
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Manda P, Adépo AJB, Kouassi M’bengue A, Konan M, Verdier N’gbe J, Doumbia M, Toutou T, Djédjé Dano S. Évaluation du rôle de l’aflatoxine B1 dans l’apparition du carcinome hépatocellulaire en Côte d’Ivoire : étude préliminaire. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2018. [DOI: 10.1016/j.toxac.2018.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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20
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Atongbiik Achaglinkame M, Opoku N, Amagloh FK. Aflatoxin contamination in cereals and legumes to reconsider usage as complementary food ingredients for Ghanaian infants: A review. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2017. [DOI: 10.1016/j.jnim.2017.09.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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21
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Smith LE, Prendergast AJ, Turner PC, Humphrey JH, Stoltzfus RJ. Aflatoxin Exposure During Pregnancy, Maternal Anemia, and Adverse Birth Outcomes. Am J Trop Med Hyg 2017; 96:770-776. [PMID: 28500823 PMCID: PMC5392618 DOI: 10.4269/ajtmh.16-0730] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pregnant women and their developing fetuses are vulnerable to multiple environmental insults, including exposure to aflatoxin, a mycotoxin that may contaminate as much as 25% of the world food supply. We reviewed and integrated findings from studies of aflatoxin exposure during pregnancy and evaluated potential links to adverse pregnancy outcomes. We identified 27 studies (10 human cross-sectional studies and 17 animal studies) assessing the relationship between aflatoxin exposure and adverse birth outcomes or anemia. Findings suggest that aflatoxin exposure during pregnancy may impair fetal growth. Only one human study investigated aflatoxin exposure and prematurity, and no studies investigated its relationship with pregnancy loss, but animal studies suggest aflatoxin exposure may increase risk for prematurity and pregnancy loss. The fetus could be affected by maternal aflatoxin exposure through direct toxicity as well as indirect toxicity, via maternal systemic inflammation, impaired placental growth, or elevation of placental cytokines. The cytotoxic and systemic effects of aflatoxin could plausibly mediate maternal anemia, intrauterine growth restriction, fetal loss, and preterm birth. Given the widespread exposure to this toxin in developing countries, longitudinal studies in pregnant women are needed to provide stronger evidence for the role of aflatoxin in adverse pregnancy outcomes, and to explore biological mechanisms. Potential pathways for intervention to reduce aflatoxin exposure are urgently needed, and this might reduce the global burden of stillbirth, preterm birth, and low birthweight.
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Affiliation(s)
- Laura E Smith
- Division of Nutritional Sciences, Cornell University, Ithaca, New York.,Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
| | - Andrew J Prendergast
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Blizard Institute, Queen Mary University of London, London, United Kingdom.,Zvitambo Institute for Maternal and Child Health Research, Harare, Zimbabwe
| | - Paul C Turner
- Maryland Institute for Applied Environmental Health, School of Public Health, University of Maryland, College Park, Maryland
| | - Jean H Humphrey
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Blizard Institute, Queen Mary University of London, London, United Kingdom
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22
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Young AG. Risky resources: Household production, food contamination, and perceptions of aflatoxin exposure among Zambian female farmers. ECONOMIC ANTHROPOLOGY 2017. [DOI: 10.1002/sea2.12088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alyson G. Young
- Department of Anthropology; University of Florida; Gainesville FL 32611 USA
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23
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Ezekiel CN, Sulyok M, Somorin Y, Odutayo FI, Nwabekee SU, Balogun AT, Krska R. Mould and mycotoxin exposure assessment of melon and bush mango seeds, two common soup thickeners consumed in Nigeria. Int J Food Microbiol 2016; 237:83-91. [PMID: 27543818 DOI: 10.1016/j.ijfoodmicro.2016.08.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/22/2016] [Accepted: 08/12/2016] [Indexed: 01/26/2023]
Abstract
An examination of the mould and fungal metabolite pattern in melon and bush mango seeds locally produced in Nigeria was undertaken in order to understand the mycotoxicological risk posed to consumers of both of these important and commonly consumed soup thickeners. The variation in mycotoxin levels in graded categories of both foodstuffs were also determined. Aspergillus, Fusarium, Penicillium, Mucorales and Trichoderma were the recovered fungi from the foodstuffs with Aspergillus species dominating (melon=97.8%; bush mango=89.9%). Among the Aspergillus species identified Aspergillus section Flavi dominated (melon: 72%; bush mango: 57%) and A. flavus, A. parasiticus, A. parvisclerotigenus and A. tamarii were the recovered species. About 56% and 73% of the A. flavus isolates from melon and bush mango seed samples, respectively were aflatoxigenic. Thirty-four and 59 metabolites including notable mycotoxins were found in the melon and bush mango seeds respectively. Mean aflatoxin levels (μg/kg) in melon (aflatoxin B1 (AFB1)=37.5 and total aflatoxins=142) and bush mango seeds (AFB1=68.1 and total aflatoxins=61.7) were higher than other mycotoxins, suggesting potential higher exposure for consumer populations. Significantly (p<0.05) higher levels of mycotoxins were found in hand-peeled melon and discoloured bush mango seeds than in machine-peeled melon and non-discoloured seeds except for HT-2 and T-2 toxins which occurred conversely. All melon and bush mango seeds exceeded the 2μg/kg AFB1 limit whereas all melon and 55% of bush mango seeds exceeded the 4μg/kg total aflatoxin EU limit adopted in Nigeria. This is the first report of (1) mycotoxin co-occurrence in bush mango seeds, (2) cyclopiazonic acid, HT-2 toxin, moniliformin, mycophenolic acid, T-2 toxin and tenuazonic acid occurrence, and (3) mycotoxin exposure assessment of both foodstuffs.
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Affiliation(s)
- Chibundu N Ezekiel
- Mycology/Mycotoxicology Research Unit, Department of Biosciences and Biotechnology, Babcock University, Ilishan Remo, Ogun State, Nigeria.
| | - Michael Sulyok
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, A-3430 Tulln, Austria
| | - Yinka Somorin
- Microbiology, School of Natural Sciences, National University of Ireland, Galway, Ireland
| | - Foluke I Odutayo
- Mycology/Mycotoxicology Research Unit, Department of Biosciences and Biotechnology, Babcock University, Ilishan Remo, Ogun State, Nigeria; Department of Basic Sciences, Babcock University, Ilishan Remo, Ogun State, Nigeria
| | - Stella U Nwabekee
- Mycology/Mycotoxicology Research Unit, Department of Biosciences and Biotechnology, Babcock University, Ilishan Remo, Ogun State, Nigeria
| | - Afeez T Balogun
- Mycology/Mycotoxicology Research Unit, Department of Biosciences and Biotechnology, Babcock University, Ilishan Remo, Ogun State, Nigeria
| | - Rudolf Krska
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, A-3430 Tulln, Austria
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Tanaka T, Mizukami S, Hasegawa-Baba Y, Onda N, Sugita-Konishi Y, Yoshida T, Shibutani M. Developmental exposure of aflatoxin B1 reversibly affects hippocampal neurogenesis targeting late-stage neural progenitor cells through suppression of cholinergic signaling in rats. Toxicology 2015; 336:59-69. [DOI: 10.1016/j.tox.2015.08.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 07/22/2015] [Accepted: 08/04/2015] [Indexed: 01/12/2023]
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Supriya C, Reddy PS. Prenatal exposure to aflatoxin B1: developmental, behavioral, and reproductive alterations in male rats. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 2015; 102:26. [PMID: 25911313 DOI: 10.1007/s00114-015-1274-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 10/23/2022]
Abstract
Previous studies have shown that aflatoxin B1 (AfB1) inhibits androgen biosynthesis as a result of its ability to form a high-affinity complex with the steroidogenic acute regulatory protein. The results of the present study demonstrate the postnatal effects of in utero exposure to AfB1 in the rat. Pregnant Wistar rats were given 10, 20, or 50 μg AfB1/kg body weight daily from gestation day (GD) 12 to GD 19. At parturition, newborns were observed for clinical signs and survival. All animals were born alive and initially appeared to be active. Male pups from control and AfB1-exposed animals were weaned and maintained up to postnatal day (PD) 100. Litter size, birth weight, sex ratio, survival rate, and crown-rump length of the pups were significantly decreased in AfB1-exposed rats when compared to controls. Elapsed time (days) for testes to descend into the scrotal sac was significantly delayed in experimental pups when compared to control pups. Behavioral observations such as cliff avoidance, negative geotaxis, surface rightening activity, ascending wire mesh, open field behavior, and exploratory and locomotory activities were significantly impaired in experimental pups. Body weights and the indices of testis, cauda epididymis, prostate, seminal vesicles, and liver were significantly reduced on PD 100 in male rats exposed to AfB1 during embryonic development when compared with controls. Significant reduction in the testicular daily sperm production, epididymal sperm count, and number of viable, motile, and hypo-osmotic tail coiled sperm was observed in experimental rats. The levels of serum testosterone and activity levels of testicular hydroxysteroid dehydrogenases were significantly decreased in a dose-dependent manner with a significant increase in the serum follicle-stimulating hormone and luteinizing hormone in experimental rats. Deterioration in the testicular and cauda epididymal architecture was observed in experimental rats. The results of fertility studies revealed a significant decrease in the mating index in experimental rats with an increase in the pre- and post-implantation losses in rats mated with prenatal AfB1-exposed males, indicating poor male reproductive performance. These results indicate that in utero exposure to AfB1 severely compromised postnatal development of neonatal rats, and caused a delay in testes descent and reduction in steroidogenesis and spermatogenesis that were accomplished by suppressed reproduction at adulthood.
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Affiliation(s)
- Ch Supriya
- Department of Biotechnology, Sri Venkateswara University, Tirupati, 517502, India
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DARWISH WS, IKENAKA Y, NAKAYAMA SM, ISHIZUKA M. An overview on mycotoxin contamination of foods in Africa. J Vet Med Sci 2014; 76:789-97. [PMID: 24572628 PMCID: PMC4108760 DOI: 10.1292/jvms.13-0563] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 02/10/2014] [Indexed: 11/22/2022] Open
Abstract
Mycotoxins are fungal secondary metabolites that contaminate various feedstuffs and agricultural crops. The contamination of food by mycotoxins can occur before production, during storage, processing, transportation or marketing of the food products. High temperature, moisture content and water activity are among the predisposing factors that facilitate the production of mycotoxins in food. Aflatoxins, ochratoxins, fumonisins, deoxynivalenol and zearalenone are all considered the major mycotoxins produced in food and feedstuffs. In Africa, mycotoxin contamination is considered to be a major problem with implications that affect human and animal health and economy. Aflatoxin-related hepatic diseases are reported in many African countries. Ochratoxin and fumonisin toxicity in humans and animals is widespread in Africa. The available, updated information on the incidence of mycotoxin contamination, decontamination and its public health importance in Africa is lacking. The aim of this review is to highlight, update and discuss the available information on the incidence of mycotoxins in African countries. The public health implications and the recommended strategies for control of mycotoxins in food and agricultural crops are also discussed.
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Affiliation(s)
- Wageh Sobhy DARWISH
- Laboratory of Toxicology, Department of Environmental
Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9,
Kita-ku, Sapporo 060–0818, Japan
- Food Control Department, Faculty of Veterinary Medicine,
Zagazig University, Zagazig 44519, Egypt
| | - Yoshinori IKENAKA
- Laboratory of Toxicology, Department of Environmental
Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9,
Kita-ku, Sapporo 060–0818, Japan
| | - Shouta M.M. NAKAYAMA
- Laboratory of Toxicology, Department of Environmental
Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9,
Kita-ku, Sapporo 060–0818, Japan
| | - Mayumi ISHIZUKA
- Laboratory of Toxicology, Department of Environmental
Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9,
Kita-ku, Sapporo 060–0818, Japan
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Ezekiel CN, Warth B, Ogara IM, Abia WA, Ezekiel VC, Atehnkeng J, Sulyok M, Turner PC, Tayo GO, Krska R, Bandyopadhyay R. Mycotoxin exposure in rural residents in northern Nigeria: a pilot study using multi-urinary biomarkers. ENVIRONMENT INTERNATIONAL 2014; 66:138-145. [PMID: 24583186 DOI: 10.1016/j.envint.2014.02.003] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 02/05/2014] [Accepted: 02/06/2014] [Indexed: 06/03/2023]
Abstract
A pilot, cross-sectional, correlational study was conducted in eight rural communities in northern Nigeria to investigate mycotoxin exposures in 120 volunteers (19 children, 20 adolescents and 81 adults) using a modern LC-MS/MS based multi-biomarker approach. First morning urine samples were analyzed and urinary biomarker levels correlated with mycotoxin levels in foods consumed the day before urine collection. A total of eight analytes were detected in 61/120 (50.8%) of studied urine samples, with ochratoxin A, aflatoxin M1 and fumonisin B1 being the most frequently occurring biomarkers of exposure. These mycotoxin biomarkers were present in samples from all age categories, suggestive of chronic (lifetime) exposures. Rough estimates of mycotoxin intake suggested some exposures were higher than the tolerable daily intake. Overall, rural consumer populations from Nasarawa were more exposed to several mixtures of mycotoxins in their diets relative to those from Kaduna as shown by food and urine biomarker data. This study has shown that mycotoxin co-exposure may be a major public health challenge in rural Nigeria; this calls for urgent intervention.
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Affiliation(s)
- Chibundu N Ezekiel
- Mycotoxicology Research Unit, Department of Biosciences and Biotechnology, Babcock University, Ilishan Remo, Nigeria; Pathology/Mycotoxin Laboratory, International Institute of Tropical Agriculture, P.M.B. 5320, Ibadan, Nigeria.
| | - Benedikt Warth
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenzstr. 20, A-3430 Tulln, Austria
| | - Isaac M Ogara
- Faculty of Agriculture, Nasarawa State University Keffi, Lafia Campus, Nasarawa State, Nigeria
| | - Wilfred A Abia
- Laboratory of Pharmacology and Toxicology, University of Yaounde I, Yaounde, Cameroon; Department of Food Technology, Faculty of Science, University of Johannesburg, South Africa
| | | | - Joseph Atehnkeng
- Pathology/Mycotoxin Laboratory, International Institute of Tropical Agriculture, P.M.B. 5320, Ibadan, Nigeria
| | - Michael Sulyok
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenzstr. 20, A-3430 Tulln, Austria
| | - Paul C Turner
- MIAEH, School of Public Health, University of Maryland, College Park, MD 20742, USA
| | - Grace O Tayo
- Department of Agriculture and Industrial Technology, Babcock University, Ilishan Remo, Nigeria
| | - Rudolf Krska
- Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad Lorenzstr. 20, A-3430 Tulln, Austria
| | - Ranajit Bandyopadhyay
- Pathology/Mycotoxin Laboratory, International Institute of Tropical Agriculture, P.M.B. 5320, Ibadan, Nigeria
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Adedara IA, Nanjappa MK, Farombi EO, Akingbemi BT. Aflatoxin B1 disrupts the androgen biosynthetic pathway in rat Leydig cells. Food Chem Toxicol 2014; 65:252-9. [DOI: 10.1016/j.fct.2013.12.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 12/17/2013] [Accepted: 12/19/2013] [Indexed: 10/25/2022]
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Asundep NN, Jolly PE, Carson AP, Turpin CA, Zhang K, Wilson NO, Stiles JK, Tameru B. Effect of Malaria and Geohelminth Infection on Birth Outcomes in Kumasi, Ghana. ACTA ACUST UNITED AC 2014; 4:582-594. [PMID: 25414840 PMCID: PMC4235765 DOI: 10.9734/ijtdh/2014/7573] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Aim In 2005, the Ghana Health Service mandated malaria and helminths chemoprophylaxis during antenatal care visits. The aim of this study was to investigate the prevalence of malaria and helminth infections and their relationship with adverse birth outcomes (low birth weight, stillbirth, and preterm) following the implementation of these treatments. Study Design A quantitative cross-sectional study. Method The study was conducted on 630 women presenting for delivery in the Komfo Anokye Teaching Hospital and the Manhyia District Hospital from July to November 2011. Socio-demographic information and medical and obstetric history were collected. Laboratory analyses for the presence of malaria and helminths were performed. Association of malaria and helminths with birth outcomes was assessed using logistic regression to obtain odds ratios (ORs) and 95% confidence intervals. Results The prevalence of malaria, helminths and adverse birth outcomes was 9.0%, 5.0% and 22.2%, respectively. Compared with women who received malaria prophylaxis, women without malaria prophylaxis were two times more likely to have malaria infection (aOR = 2.1; 95% CI = 1.06-4.17). Women who were not screened for helminths were twice as likely to be infected with helminths (aOR = 2.4; 95% CI = 1.15-5.12) than women who were screened for helminths. For women infected with hookworm or Schistosoma mansoni, the odds of having an adverse birth outcome (aOR = 3.9; 95% CI = 1.09-14.20) and stillbirth (aOR = 7.7; 95% CI = 1.21-36.38) were greater than for women who were not infected. Conclusion The prevalence of malaria, helminths and adverse birth outcomes was lower than previously reported 9.0% vs. 36.3, 5.0% vs. 25.7 and 22.2% vs. 44.6, respectively. Helminth but not malaria infection was found to be significantly associated with adverse birth outcomes.
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Affiliation(s)
- Ntui N Asundep
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Pauline E Jolly
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - April P Carson
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | | | - Kui Zhang
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Nana O Wilson
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Jonathan K Stiles
- Department of Microbiology, Biochemistry and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | - Berhanu Tameru
- Center for Computational Epidemiology, Bioinformatics and Risk Analysis (CCEBRA), Tuskegee University, Tuskegee AL 36088, USA
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Abia WA, Warth B, Sulyok M, Krska R, Tchana A, Njobeh PB, Turner PC, Kouanfack C, Eyongetah M, Dutton M, Moundipa PF. Bio-monitoring of mycotoxin exposure in Cameroon using a urinary multi-biomarker approach. Food Chem Toxicol 2013; 62:927-34. [PMID: 24128729 DOI: 10.1016/j.fct.2013.10.003] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 09/09/2013] [Accepted: 10/02/2013] [Indexed: 12/26/2022]
Abstract
Bio-monitoring of human exposure to mycotoxin has mostly been limited to a few individually measured mycotoxin biomarkers. This study aimed to determine the frequency and level of exposure to multiple mycotoxins in human urine from Cameroonian adults. 175 Urine samples (83% from HIV-positive individuals) and food frequency questionnaire responses were collected from consenting Cameroonians, and analyzed for 15 mycotoxins and relevant metabolites using LC-ESI-MS/MS. In total, eleven analytes were detected individually or in combinations in 110/175 (63%) samples including the biomarkers aflatoxin M1, fumonisin B1, ochratoxin A and total deoxynivalenol. Additionally, important mycotoxins and metabolites thereof, such as fumonisin B2, nivalenol and zearalenone, were determined, some for the first time in urine following dietary exposures. Multi-mycotoxin contamination was common with one HIV-positive individual exposed to five mycotoxins, a severe case of co-exposure that has never been reported in adults before. For the first time in Africa or elsewhere, this study quantified eleven mycotoxin biomarkers and bio-measures in urine from adults. For several mycotoxins estimates indicate that the tolerable daily intake is being exceeded in this study population. Given that many mycotoxins adversely affect the immune system, future studies will examine whether combinations of mycotoxins negatively impact Cameroonian population particularly immune-suppressed individuals.
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Affiliation(s)
- Wilfred A Abia
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon; Center for Analytical Chemistry, Department for Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, A-3430 Tulln, Austria; Department of Food Technology, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein Campus, 2028 Gauteng, South Africa
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Ehrlich KC, Mack BM, Wei Q, Li P, Roze LV, Dazzo F, Cary JW, Bhatnagar D, Linz JE. Association with AflR in endosomes reveals new functions for AflJ in aflatoxin biosynthesis. Toxins (Basel) 2013; 4:1582-1600. [PMID: 23342682 PMCID: PMC3528264 DOI: 10.3390/toxins4121582] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aflatoxins are the most potent naturally occurring carcinogens of fungal origin. Biosynthesis of aflatoxin involves the coordinated expression of more than 25 genes. The function of one gene in the aflatoxin gene cluster, aflJ, is not entirely understood but, because previous studies demonstrated a physical interaction between the Zn2Cys6 transcription factor AflR and AflJ, AflJ was proposed to act as a transcriptional co-activator. Image analysis revealed that, in the absence of aflJ in A. parasiticus, endosomes cluster within cells and near septa. AflJ fused to yellow fluorescent protein complemented the mutation in A. parasiticus ΔaflJ and localized mainly in endosomes. We found that AflJ co-localizes with AflR both in endosomes and in nuclei. Chromatin immunoprecipitation did not detect AflJ binding at known AflR DNA recognition sites suggesting that AflJ either does not bind to these sites or binds to them transiently. Based on these data, we hypothesize that AflJ assists in AflR transport to or from the nucleus, thus controlling the availability of AflR for transcriptional activation of aflatoxin biosynthesis cluster genes. AflJ may also assist in directing endosomes to the cytoplasmic membrane for aflatoxin export.
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Affiliation(s)
- Kenneth C. Ehrlich
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-11-504-286-4369; Fax: +1-11-504-286-4419
| | - Brian M. Mack
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
| | - Qijian Wei
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
| | - Ping Li
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
| | - Ludmila V. Roze
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 488244, USA; E-Mails: (L.V.R.); (J.E.L.)
| | - Frank Dazzo
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI 488244, USA; E-Mail:
| | - Jeffrey W. Cary
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
| | - Deepak Bhatnagar
- Southern Regional Research Center, Agricultural Research Service/United States Department of Agriculture, 1100 Robert E. Lee Blvd, New Orleans, LA 70124, USA; E-Mails: (B.M.M.); (Q.W.); (P.L.); (J.W.C.); (D.B.)
| | - John E. Linz
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 488244, USA; E-Mails: (L.V.R.); (J.E.L.)
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Ofori-Adjei D. Aflatoxin exposure in pregnant women in Ghana. Ghana Med J 2012; 46:178. [PMID: 23661835 PMCID: PMC3645173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
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The role of biomarkers in evaluating human health concerns from fungal contaminants in food. Nutr Res Rev 2012; 25:162-79. [PMID: 22651937 DOI: 10.1017/s095442241200008x] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Mycotoxins are toxic secondary metabolites that globally contaminate an estimated 25 % of cereal crops and thus exposure is frequent in many populations. Aflatoxins, fumonisins and deoxynivalenol are amongst those mycotoxins of particular concern from a human health perspective. A number of risks to health are suggested including cancer, growth faltering, immune suppression and neural tube defects; though only the demonstrated role for aflatoxin in the aetiology of liver cancer is widely recognised. The heterogeneous distribution of mycotoxins in food restricts the usefulness of food sampling and intake estimates; instead biomarkers provide better tools for informing epidemiological investigations. Validated exposure biomarkers for aflatoxin (urinary aflatoxin M(1), aflatoxin-N7-guaunine, serum aflatoxin-albumin) were established almost 20 years ago and were critical in confirming aflatoxins as potent liver carcinogens. Validation has included demonstration of assay robustness, intake v. biomarker level, and stability of stored samples. More recently, aflatoxin exposure biomarkers are revealing concerns of growth faltering and immune suppression; importantly, they are being used to assess the effectiveness of intervention strategies. For fumonisins and deoxynivalenol these steps of development and validation have significantly advanced in recent years. Such biomarkers should better inform epidemiological studies and thus improve our understanding of their potential risk to human health.
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Spezielle Arzneimitteltherapie in der Schwangerschaft. ARZNEIMITTEL IN SCHWANGERSCHAFT UND STILLZEIT 2012. [PMCID: PMC7271212 DOI: 10.1016/b978-3-437-21203-1.10002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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