Environmental Heavy Metals and Mental Disorders of Children in Developing Countries

Hassanien, Mahmoud A.; Shahawy, Amir M. El

doi:10.1007/978-94-007-0253-0_1

Cited by 18 publications

(8 citation statements)

References 72 publications

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“…Moreover, due to the bioaccumulation of Pb, this heavy metal has been detected in a wide range of seafood, especially in fish, which in turn increases the risk of dietary Pb exposure to consumers (Castro‐González & Méndez‐Armenta ; Bisanz, Enos, Mwanga, Changalucha, Burton, Gloor & Reid ). As a non‐essential metal for humans and animals, the threshold for blood lead level (BLL) thought to cause toxicity in children was 60 μg dL −1 in 1960s and lowered to 10 μg dL −1 in 1991; subsequently, the Centers for Disease Control and Prevention in US reported that they no longer consider any blood lead level to be safe for children (Hassanien & Elshahawy ). Therefore, the concentrations of this toxic metal in fish should be controlled at the greatest extent.…”

Section: Discussionmentioning

confidence: 99%

Dietary Lactobacillus plantarum supplementation decreases tissue lead accumulation and alleviates lead toxicity in Nile tilapia (Oreochromis niloticus )

et al. 2017

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Pollution by the heavy metal lead (Pb) has become a threat to both aquaculture and food safety. In this study, the protective effects of a selected probiotic with good Pb binding capacity (Lactobacillus plantarum CCFM8661) against waterborne Pb exposure were evaluated in Nile tilapia (Oreochromis niloticus). One hundred and eighty fish were divided into four groups as control, Pb-only, Pb-plus-CCFM8661 and CCFM8661only. Fish were exposed to a dose of waterborne Pb level at 1 mg L À1 for 4 weeks, and the probiotic was administered at 10 8 CFU g À1 in fish diet twice daily. The results showed that dietary supplementation of CCFM8661 ameliorated the growth performance and prevented the death of Pb-exposed fish. Cotreatment with Pb and CCFM8661 also effectively decreased Pb accumulation in kidney, liver, gonad, brain, gills and muscle. Moreover, the administration of this probiotic alleviated Pb-induced oxidative stress, recovered digestive enzyme activities and blood daminolevulinic acid dehydratase activity, reversed alterations in innate immune status and decreased the frequencies of the nuclear abnormalities in peripheral blood erythrocytes of fish. These results suggested that CCFM8661 may be a novel dietary supplement against Pb toxicity at least in tilapia.

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Section: Discussionmentioning

confidence: 99%

Dietary Lactobacillus plantarum supplementation decreases tissue lead accumulation and alleviates lead toxicity in Nile tilapia (Oreochromis niloticus )

et al. 2017

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“…Air pollution is considered one of the biggest environmental problems in many cities around the world [1], due to increased urbanization, industrial production, rising emissions from traffic and the lack of urban planning [2][3][4]. Automobiles are one of the major factors, as they emit exhaust and non-exhaust contaminants [5].…”

Section: Introductionmentioning

confidence: 99%

Lichens and Bromeliads as Bioindicators of Heavy Metal Deposition in Ecuador

et al. 2019

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We evaluated heavy metal deposition in Parmotrema arnoldii and Tillandsia usneoides in response to air pollution in Loja city, Ecuador. We assessed heavy metal (cadmium, copper, manganese, lead and zinc) content in these organisms at nine study sites inside Loja city and three control sites in nearby forests. Concentrations of all studied heavy metals (i.e., cadmium (Cd), copper (Cu), lead (Pb), manganese (Mn) and zinc (Zn)) were highest in downtown Loja. Our study confirms that passive monitoring using lichens and/or bromeliads can be an efficient tool to evaluate heavy metal deposition related to urbanization (e.g., vehicle emissions). We recommend these organisms to be used in cost-effective monitoring of air pollution in tropical countries.

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“…Today, it is the developing countries that are facing the most serious Cd and Pb pollution problems. The threshold for blood lead level (BLL) thought to cause toxicity in children was 60 μg/dL in 1960s but this value was lowered to 10 μg/dL in 1991, subsequently the Centers for Disease Control and Prevention in US reported that they no longer consider any blood lead level to be safe for children [ 3 ]. As a consequence of pollution, the blood lead analyses of 15,727, 14,737 and 13,584 Chinese children in 2004, 2005, and 2006, respectively, showed 10.10%, 7.78% and 7.30% of children had BLL above 10 μg/dL [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Dietary Strategies for the Treatment of Cadmium and Lead Toxicity

2015

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Cadmium (Cd) and lead (Pb) are toxic heavy metals that cause adverse health effects in humans and animals. Chelation therapy, the conventional treatment for heavy metal toxicity, is reported to have a number of safety and efficacy issues. Recent studies have shown that dietary supplements play important roles in protecting against Cd and Pb toxicity. This paper reviews the evidence for protective effects of essential metals, vitamins, edible plants, phytochemicals, probiotics and other dietary supplements against Cd and Pb toxicity and describes the proposed possible mechanisms. Based on these findings, dietary strategies are recommended for people at risk of Cd and Pb exposure. The application of these strategies is advantageous for both the prevention and alleviation of Cd and Pb toxicity, as such supplements can be added easily and affordably to the daily diet and are expected to have very few side effects compared to the chelation therapy.

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Environmental Heavy Metals and Mental Disorders of Children in Developing Countries

Cited by 18 publications

References 72 publications

Dietary Lactobacillus plantarum supplementation decreases tissue lead accumulation and alleviates lead toxicity in Nile tilapia (Oreochromis niloticus )

Dietary Lactobacillus plantarum supplementation decreases tissue lead accumulation and alleviates lead toxicity in Nile tilapia (Oreochromis niloticus )

Lichens and Bromeliads as Bioindicators of Heavy Metal Deposition in Ecuador

Dietary Strategies for the Treatment of Cadmium and Lead Toxicity

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