Evaluating the concentrations of total mercury, methylmercury, selenium, and selenium:mercury molar ratios in traditional foods of the Bigstone Cree in Alberta, Canada

Golzadeh, Nasrin; Barst, Benjamin D.; Basu, Niladri; Baker, Janelle Marie; Auger, Josie C.; McKinney, Melissa A.

doi:10.1016/j.chemosphere.2020.126285

Cited by 18 publications

(13 citation statements)

References 44 publications

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“…As shown by research from Canada, in small grazers, like the hare, MeHg constituted about 3% of THg in muscles and 13% in livers. In the muscles of herbivore moose, the percentage of MeHg was slightly higher amounting to 13% (Golzadeh et al 2020 ). In the case of roe deer from Slovenia, the percentage of MeHg was about 10% in muscles and 40% in livers (Gnamuš et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…In the case of roe deer from Slovenia, the percentage of MeHg was about 10% in muscles and 40% in livers (Gnamuš et al, 2020). Studies conducted in Northern America indicated that tissues of animals placed higher in the food chain, such as omnivorous ground squirrel and bear had a similar share of MeHg in THg to herbivores (Lasorsa and Allen-Gil 1995 ; Golzadeh et al 2020 ). In the case of fish-eating mammals, such as mink and otter, the increase in the MeHg contribution to THg in their tissues and organs was significant and reached about 90% in the muscles and 60–80% in the livers (Evans et al 2000 ; Strom 2008 ).…”

Section: Discussionmentioning

confidence: 99%

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Status and trends of mercury pollution of the atmosphere and terrestrial ecosystems in Poland

Jędruch

Falkowska

Saniewska

et al. 2021

Ambio

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The goal of this paper is to assess the current status and trends of total mercury (THg) contamination of the atmosphere and terrestrial ecosystems in Poland. The study shows that the reduced domestic and worldwide atmospheric emission of Hg resulted in decreased THg level in the terrestrial biotope and biosphere. Considering that Poland is one of the main Hg emitters in Europe, the THg concentrations in its abiotic environment are still elevated. However, the THg level in terrestrial organisms is relatively low, which is because a large proportion of Hg deposited on land is accumulated in organic-rich soils. Regarding the THg concentration, consumption of wildlife and livestock from Poland is safe for humans. Nevertheless, the authors indicate the need for effective environmental monitoring, based on selected bioindicators, which is crucial considering the slowing reduction of Hg emission combined with the consequences of the changing climate.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Status and trends of mercury pollution of the atmosphere and terrestrial ecosystems in Poland

Jędruch

Falkowska

Saniewska

et al. 2021

Ambio

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“…The average mercury concentration in moose tissues (liver: 0.007+0.001, muscle: 0.004+0.001, kidney: 0.079+0.02 mg / kg wet weight) is 1.5-2.5 times higher than in the corresponding tissues of moose (Alces americanus) in Mackenzie Valley (Dehcho region, Northwest Canada) (liver: 0.005, muscle: 0.002, kidney: 0.03 mg/kg wet weight) [8]. At the same time, the average concentration of mercury in muscles of moose traditionally eaten by the local population (0.004+0.001 mg/kg wet weight) is comparable to the level of total mercury in traditional foods of the Bigstone Cree tribe in Alberta, Canada (0.003 ± 0.001 raw weight) [9]. The average mercury concentration in wild boar tissues of the Russky Sever National Park (liver: 0.419+0.205, kidneys: 0.711+0.253 mg/kg wet weight) is higher than the mercury concentrations determined by dry weight in the corresponding wild boar in nature reserves and national parks of Poland: unpolluted area within the Mazurski Landscape Reserve (liver: 0.043, kidneys: 0.321 mg/kg dry weight), agricultural land within Snieznicki Landscape Park (liver: 0.043, kidney: 0.314 mg/kg dry weight), non-industrial area near Bieszczadzki National Park (liver: 0.101, kidney: 0.729 mg/kg dry weight) [10].…”

Section: Discussionmentioning

confidence: 99%

Total mercury level in tissues of commercial mammalian species (wild boar, moose) of the Russky Sever National Park (North-West of Russia)

Eltsova

Ivanova

2021

E3S Web Conf.

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Bioaccumulation of mercury in the food chain can pose a threat to human health. Therefore, in our article, we obtained data on the concentrations of mercury in the tissues of wild animals, which are a food resource for humans. We determined the mercury concentrations in liver, kidneys, muscles and hair of wild boar and moose, which are consumed by the population of the Russky Sever National Park. The average mercury concentrations in moose tissues ranged from 0.004 mg / kg wet weight in muscles to 0.079 mg / kg wet weight in kidneys. The average concentrations of mercury in boar tissues ranged from 0.136 mg / kg wet weight in wool to 0.711 mg / kg wet weight in kidneys. The main trends of mercury bioaccumulation in the tissues of moose and wild boar were determined.

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“…Acute exposure to HMs can severely damage lungs, liver, kidneys, and the central nervous system (ATSDR, 2004). Long-term exposure can lead to HM bioaccumulation not only in humans, but also in crops, soil, and wildlife used as food sources, indirectly affecting humans [ 218 , 219 ]. While acute exposures to HMs knowingly causes severe toxic effects, concerns by public health authorities are currently focused on chronic, low-dose exposures, which can lead to cumulative effects.…”

Section: Cellular and Molecular Mechanisms Of Toxicity On Hematopomentioning

confidence: 99%

Cellular and Molecular Mechanisms of Environmental Pollutants on Hematopoiesis

Scharf

Broering

Rocha

et al. 2020

IJMS

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Hematopoiesis is a complex and intricate process that aims to replenish blood components in a constant fashion. It is orchestrated mostly by hematopoietic progenitor cells (hematopoietic stem cells (HSCs)) that are capable of self-renewal and differentiation. These cells can originate other cell subtypes that are responsible for maintaining vital functions, mediate innate and adaptive immune responses, provide tissues with oxygen, and control coagulation. Hematopoiesis in adults takes place in the bone marrow, which is endowed with an extensive vasculature conferring an intense flow of cells. A myriad of cell subtypes can be found in the bone marrow at different levels of activation, being also under constant action of an extensive amount of diverse chemical mediators and enzymatic systems. Bone marrow platelets, mature erythrocytes and leukocytes are delivered into the bloodstream readily available to meet body demands. Leukocytes circulate and reach different tissues, returning or not returning to the bloodstream. Senescent leukocytes, specially granulocytes, return to the bone marrow to be phagocytized by macrophages, restarting granulopoiesis. The constant high production and delivery of cells into the bloodstream, alongside the fact that blood cells can also circulate between tissues, makes the hematopoietic system a prime target for toxic agents to act upon, making the understanding of the bone marrow microenvironment vital for both toxicological sciences and risk assessment. Environmental and occupational pollutants, therapeutic molecules, drugs of abuse, and even nutritional status can directly affect progenitor cells at their differentiation and maturation stages, altering behavior and function of blood compounds and resulting in impaired immune responses, anemias, leukemias, and blood coagulation disturbances. This review aims to describe the most recently investigated molecular and cellular toxicity mechanisms of current major environmental pollutants on hematopoiesis in the bone marrow.

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Evaluating the concentrations of total mercury, methylmercury, selenium, and selenium:mercury molar ratios in traditional foods of the Bigstone Cree in Alberta, Canada

Cited by 18 publications

References 44 publications

Status and trends of mercury pollution of the atmosphere and terrestrial ecosystems in Poland

Status and trends of mercury pollution of the atmosphere and terrestrial ecosystems in Poland

Total mercury level in tissues of commercial mammalian species (wild boar, moose) of the Russky Sever National Park (North-West of Russia)

Cellular and Molecular Mechanisms of Environmental Pollutants on Hematopoiesis

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