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Environmentally relevant lead alters nuclear integrity in erythrocytes and generates oxidative stress in liver of Anabas testudineus: Involvement of Nrf2‐Keap1 regulation and expression of biomarker genes

Koushik Kumar Dey, Paritosh Mondal, Ansuman Chattopadhyay

Journal of Applied Toxicology > 44 > 2 > 260 - 271

Genotoxic and hepatotoxic effects of lead (Pb) on a freshwater fish, climbing perch (Anabas testudineus) were studied at an environmentally relevant concentration (43.3 ppm). The genotoxic potential of Pb was confirmed by micronucleus study, with increased frequencies of erythrocytic nuclear alterations like lobed, blebbed, notched, fragmented, and micronuclei were observed in erythrocytes in treated...

artykuł

Effects of Separate and Combined Exposure of Cadmium and Lead on the Endochondral Ossification in Bufo gargarizans

Aixia Chen, Hongzhang Deng, Xiuling Song, Xiaoli Liu, więcej

Environmental Toxicology and Chemistry > 41 > 5 > 1228 - 1245

Cadmium (Cd) and lead (Pb) are ubiquitous in aquatic environments and most studies have examined the potential effects of Cd or Pb alone on aquatic organisms. In the present study, chronic effects of Cd and Pb, alone and in combination, on Bufo gargarizans were investigated by exposing embryos to these contaminants throughout metamorphosis. Significant reductions in body mass and snout‐to‐vent length...

artykuł

High‐fat diet exacerbates lead‐induced blood–brain barrier disruption by disrupting tight junction integrity

Chao Li, Liang Shi, Yuanbo Wang, Cheng Peng, więcej

Environmental Toxicology > 36 > 7 > 1412 - 1421

Environmental exposure to lead (Pb) can damage to the central nervous system (CNS) in humans. High‐fat diet (HFD) also has been suggested to impair neurocognitive function. Blood–brain barrier (BBB) is a rigorous permeability barrier for maintaining homeostasis of CNS. The damage of BBB caused by tight junctions (TJs) disruption is central to the etiology of various CNS disorders. This study aimed...

artykuł

Immunomodulation by Coriandrum sativum seeds (Coriander) and its ameliorative effect on lead‐induced immunotoxicity in Nile tilapia (Oreochromis niloticus L.)

Shaimaa A. A. Ahmed, Rasha M. Reda, Mohamed ElHady

Aquaculture Research > 51 > 3 > 1077 - 1088

The current study was carried out to evaluate the effects of dietary supplementation of Coriandrum sativum seed powder (CP) and extract (CE) on some immune functions of Oreochromis niloticus, without or with exposure to the immunotoxicant metal lead (Pb). Fish (n = 300) were divided into ten groups, in triplicate. First group (Cont) was fed on the basal control diet. Second (CP20) and third (CP30)...

artykuł

Use of national-scale data to examine human-mediated additions of heavy metals to wetland soils of the US

Amanda M. Nahlik, Karen A. Blocksom, Alan T. Herlihy, Mary E. Kentula, więcej

Environmental Monitoring and Assessment > 2019 > 191 > 1 > 1-24

Soil concentrations of 12 heavy metals that have been linked to various anthropogenic activities were measured in samples collected from the uppermost horizon in approximately 1000 wetlands across the conterminous US as part of the 2011 National Wetland Condition Assessment (NWCA). The heavy metals were silver (Ag), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), antimony...

artykuł

Uptake and transport of Pb across the iron plaque of waterlogged dropwort (Oenanthe javanica DC.) based on micro-XRF and XANES

Jian Liu, Liqiang Luo

Plant and Soil > 2019 > 441 > 1-2 > 191-205

Background and aim Iron plaque at the soil-root interface is a key position for uptake of heavy metals by plants. Exploring iron plaque’s role in Pb uptake by edible vegetable roots aids understanding Pb uptake mechanisms and developing methods to reduce Pb accumulation. Methods Soil and plant Pb contents were determined. Micro X-ray fluorescence (micro-XRF) determined Fe and Pb distributions in...

artykuł

Exposure routes and health effects of heavy metals on children

Muwaffak Al osman, Fei Yang, Isaac Yaw Massey

BioMetals > 2019 > 32 > 4 > 563-573

Heavy metals are naturally existing elements that have relatively high atomic weight and a minimum density five times the density of water. Heavy metals have extensive applications in industries, homes, agriculture and medicine, leading to their wide distribution in the environment. Most heavy metals are reported to be highly toxic. They also have numerous exposure routes, including ingestion, inhalation,...

artykuł

Lead contamination in sediments in the past 20 years: A challenge for China

Lanfang Han, Bo Gao, Hong Hao, Huaidong Zhou, więcej

Science of The Total Environment > 2018 > 640-641 > C > 746-756

Lead (Pb) contamination was recognized in China early in the 1920s. However, the response of Pb contamination in sediments to China's rapid economic and social development remains uncertain to date. We conducted a literature review of over 1000 articles from 1990 to 2016 and the first national-scale survey of Pb contamination in China. A literature review showed that available research in China focused...

artykuł

Pb fractionation and redistribution as affected by applied inorganic amendments under different soil moisture regimes and incubation time in saline–sodic Pb-polluted paddy soil

Muhammad Mazhar Iqbal, Ghulam Murtaza, Tayyaba Naz, Amjad Hussain, więcej

Paddy and Water Environment > 2018 > 16 > 4 > 875-885

Bioavailability and mobility of lead (Pb) in soils depend upon their partitioning between solution-solid phases and their further fractionation and redistribution among different solid-phase components. However, the dynamics of Pb in salt-affected (saline–sodic) Pb-contaminated (polluted) paddy soil need more exploration particularly under the influence of application of amendments at varying hydrological...

artykuł

Ascorbic Acid Attenuates Lead-Induced Alterations in the Synapses in the Developing Rat Cerebellum

Sung Min Nam, In-Sun Cho, Jin Seok Seo, Tae-Hun Go, więcej

Biological Trace Element Research > 2019 > 187 > 1 > 142-150

We evaluated the effect of lead (Pb) and ascorbic acid treatment of pregnant female rats on cerebellar development in pups. Pb was administered in drinking water (0.2% Pb acetate), and ascorbic acid (100 mg/kg) was administered through oral intubation. Fifteen female rats were randomly classified into control, Pb, and Pb plus ascorbic acid (PA) groups. The treatment of Pb and ascorbic acid treatments...

artykuł

Cadmium and lead accumulations and agronomic quality of a newly bred pollution-safe cultivar (PSC) of water spinach

Ying-Ying Huang, Yang-Xiu Mu, Chun-Tao He, Hui-Ling Fu, więcej

Environmental Science and Pollution Research > 2018 > 25 > 11 > 11152- 11162

Breeding for pollution-safe cultivars (PSCs) can reduce pollutant accumulation in crops. However, the PSC breeding would face the risk of nutritional quality reduction, which is usually ignored in conventional breeding programs targeting to increase crop yield or nutritional quality. Thus, the doubt whether the risk would exist has to be clarified for supporting the PSC breeding. In the present study,...

artykuł

Role of neurexin2a in lead-induced locomotor defect in developing zebrafish

Hongwei Tu, Tao Peng, Jiaxian Liu, Xiaohui Chen, więcej

Aquatic Toxicology > 2018 > 194 > C > 167-175

Low-dose chronic lead (Pb) exposure interferes with the development of the nervous system, which may lead to learning disabilities, behavioral abnormalities, and mental retardation. Neurexins (Nrxns) are synaptic cell-adhesion molecules associated with neurological disorders. We hypothesized that Pb can affect the expression of nrxns during synapse formation and alter the phenotype behavior. Here,...

artykuł

Improved source apportionment of PAHs and Pb by integrating Pb stable isotopes and positive matrix factorization application (PAHs): A historical record case study from the northern South China Sea

Minggang Cai, Yan Lin, Meng Chen, Weifeng Yang, więcej

Science of The Total Environment > 2017 > 609 > C > 577-586

To obtain the historical changes of pyrogenic sources, integrated source apportionment methods, which include PAH compositions, diagnostic ratios (DRs), Pb isotopic ratios, and positive matrix factorization (PMF) model, were developed and applied in sediments of the northern South China Sea. These methods provided a gradually clear picture of energy structural change. Spatially, Σ₁₅PAH (11.3 to 95...

artykuł

Diversity of fungal endophytes in Typha latifolia (L.) and their lead biosorption activity

Samiksha Sharma, Kishan Lal Tiwari, Shailesh Kumar Jadhav

Euro-Mediterranean Journal for Environmental Integration > 2018 > 3 > 1 > 1-8

The present study was done to determine the lead (Pb) adsorption capability of endophytic fungi isolated from Typha latifolia (L.), a member of Cattail family (Typhaceae). Wetland plant Typha latifolia (L.) is a well-known pollution indicator, having the ability to absorb and accumulate heavy metals. Twenty fungal endophytes were isolated from different parts of the plant; amongst all isolates, 100%...

artykuł

Updated species sensitivity distribution evaluations for acute and chronic lead toxicity to saltwater aquatic life

Brian G. Church, Patrick A. Van Sprang, M. Jasim Chowdhury, David K. DeForest

Environmental Toxicology and Chemistry > 36 > 11 > 2974 - 2980

The US Environmental Protection Agency's (USEPA's) ambient water quality criteria (AWQC) for lead (Pb) in salt water were developed in 1984. The acute and chronic criteria are 210 and 8.1 μg/L dissolved Pb, respectively. Because data were limited in 1984, the chronic criterion was derived using an acute‐to‐chronic ratio, but there are now sufficient toxicity data such that an acute‐to‐chronic ratio...

artykuł

Perinatal lead (Pb) exposure results in sex and tissue‐dependent adult DNA methylation alterations in murine IAP transposons

L. Montrose, C. Faulk, J. Francis, D.C. Dolinoy, więcej

Environmental and Molecular Mutagenesis > 58 > 8 > 540 - 550

Epidemiological and animal data suggest that adult chronic disease is influenced by early‐life exposure‐induced changes to the epigenome. Previously, we observed that perinatal lead (Pb) exposure results in persistent murine metabolic‐ and activity‐related effects. Using phylogenetic and DNA methylation analysis, we have also identified novel intracisternal A particle (IAP) retrotransposons exhibiting...

artykuł

Sexually Dimorphic Effects of Early-Life Exposures to Endocrine Disruptors: Sex-Specific Epigenetic Reprogramming as a Potential Mechanism

Carolyn McCabe, Olivia S. Anderson, Luke Montrose, Kari Neier, więcej

Current Environmental Health Reports > 2017 > 4 > 4 > 426-438

Purpose of Review The genetic material of every organism exists within the context of regulatory networks that govern gene expression—collectively called the epigenome. Animal models and human birth cohort studies have revealed key developmental periods that are important for epigenetic programming and vulnerable to environmental insults. Thus, epigenetics represent a potential mechanism through which...

artykuł

Background lead and mercury exposures: Psychological and behavioral problems in children

Brooks B. Gump, Matthew J. Dykas, James A. MacKenzie, Amy K. Dumas, więcej

Environmental Research > 2017 > 158 > C > 576-582

The potential harm from exposure to nonessential metals, particularly mercury (Hg) and lead (Pb), has been the focus of research for years. Initial interest focused on relatively high exposures; however, recent evidence suggests that even background exposures might have adverse consequences for child development. Identifying the extent of these consequences is now a priority.We assessed blood Pb and...

artykuł

Lead exposure and tau hyperphosphorylation: An in vitro study

Syed Waseem Bihaqi, Aseel Eid, Nasser H. Zawia

NeuroToxicology > 2017 > 62 > C > 218-223

The presence of fibrillary lesions, which are mainly composed of the microtubule associated protein tau (MAPT) in neurons, has gained immense recognition due to their presence in numerous neurodegenerative diseases, including Alzheimer's disease (AD). Dysregulation of tau is related with its altered site-specific phosphorylation which is followed by tau polymerization, neuronal dysfunction and death...

artykuł

Unexpected effect of dry olive leaf extract on the level of DNA damage in lymphocytes of lead intoxicated workers, before and after CaNa2EDTA chelation therapy

Andrea Čabarkapa, Dragana Dekanski, Lada Živković, Mirjana Milanović-Čabarkapa, więcej

Food and Chemical Toxicology > 2017 > 106 > PB > 616-623

The CaNa₂EDTA chelation therapy is often practiced with antioxidant supplementation. Dry olive leaf extract (DOLE) is natural product with antioxidant and DNA protective properties. The effects of DOLE on the levels of DNA damage were investigated ex vivo in peripheral blood lymphocytes (PBLs) of 19 workers occupationally exposed to lead (Pb), before and after CaNa₂EDTA chelation therapy.DOLE demonstrated...

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