Concentrations of some heavy metals in commercially important finfish and shellfish of the River Ganga

Mitra, Abhijit; Chowdhury, Rajesh; Banerjee, Kakoli

doi:10.1007/s10661-011-2111-x

Cited by 56 publications

(32 citation statements)

References 22 publications

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“…Moreover, the percentages of metals were significantly different (p < 0.05) in the soft tissues of clams from different sites. The results were in agreement with previous reports on the composition patterns of heavy metals in aquatic organisms (Sankar et al, 2006;Mitra et al, 2012;Tao et al, 2012), such as fish and shellfish. Because essential elements have an important role in the growth and development, immunity, reproduction, and other functions, aquatic organisms tend to accumulate relatively high levels of essential elements for normal life activities, but very high levels of the essential mineral elements will be harmful to the health of aquatic organisms and human beings (Gale et al, 2004).…”

supporting

confidence: 93%

Concentration distribution and potential health risk of heavy metals in Mactra veneriformis from Bohai Bay, China

Liu

Zhou

et al. 2015

Marine Pollution Bulletin

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a b s t r a c tTo investigate the pollution level and evaluate the potential health risks of heavy metals, the concentrations of chromium (Cr), manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), selenium (Se), molybdenum (Mo), cadmium (Cd), antimony (Sb), and lead (Pb) were determined by inductively coupled plasma-mass spectrometry (ICP-MS) in 198 clams (Mactra veneriformis) collected from 11 sites of the Bohai Bay. The results showed that heavy metal concentrations in the clams were different at different sites (p < 0.05). Mn was dominant with a percentage of 22.08-77.03% in heavy metals, followed by Zn with 12.66-57.11%, and the concentration of Pb was the lowest with 0.45-1.04%. The potential health risk to consumers was evaluated by the target hazard quotient (THQ) and the maximum daily consumption rate (CR max ). The results indicated that the THQs of Co were the highest with the values of 1.125, 1.665, and 1.144 at three sections; the values of other individual metals were <1, which indicated that consumption of clams from the study areas caused health risks due to Co. Moreover, the CR max values also indicated the potential health risk caused by Co in clams consumed in this area. Pearson correlation analysis and principal component analysis (PCA) indicated that there were significantly positive or negative correlations between the heavy metals (p < 0.05), and the studied metals were divided into four groups. The results indicated that the concentrations of heavy metals in clams were affected not only by pollution sources but also by the characteristics of clams that could absorb selectively and accumulate special metals. This study offers important information on the pollution levels of heavy metals in clams and warns consumers of the health risks associated with the consumption of clams in the area.

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confidence: 93%

Concentration distribution and potential health risk of heavy metals in Mactra veneriformis from Bohai Bay, China

Liu

Zhou

et al. 2015

Marine Pollution Bulletin

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“…Their transfer into the food chain and results in their accumulation in the food stuffs which causes potential health risks to the consumers (Khan et al, 2008). Thus, it is important to determine their concentration in food stuffs and its amount transfer to the consumers during daily intake could be estimated by following formula (Wang et al, 2005;Mitra et al, 2012;Krishna et al, 2014.…”

Section: Human Health Risk Assessmentmentioning

confidence: 99%

Human health risk assessment and mitigation of heavy metal pollution in agriculture and environment

Kumar¹,

Malik²,

Patel³

et al. 2019

Contaminants in Agriculture and Environment: Health Risks and Remediation

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Heavy metals contamination in agricultural environment and its deleterious effects on the crops and human health is an issue of serious concern in the present time. Agricultural fields receive various heavy metals such as Zn, Ni, Mn, Cu, Cd, Cr, Pb, As and Hg etc. mainly from natural and anthropogenic sources. The greater concentration of heavy metals in the fields spoils the soil characteristics and has extreme consequences on both crops and human. Their persistence and non-degradable nature increases its accumulation in the agricultural field, crops and human body through various food chains. The present chapter highlights various sources of heavy metals in agricultural environment and its impacts on both crops and human health and gives various strategies to mitigate the heavy metal concentrations in agricultural environment.

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“…It is evident that Zn 2+ binding directly mediates hydrophobic exposure of enzyme active site pocket and structural unfolding, as well as unfavorable aggregation in a broad variety of metallic/non-metallic enzymes, including creatine kinase and AK [21,22]. The roles of Zn 2+ in ocean invertebrates have not been well elucidated, but it has been found that Zn 2+ concentrations in the body of marine organisms, especially for marine invertebrates, are more excessive than other organisms’ metabolisms [23-25]. The reason of Zn 2+ can exist excess concentration in tissues of marine invertebrates is that it is prone to bind to macromolecules or present as insoluble metal inclusions in tissues [26].…”

Section: Introductionmentioning

confidence: 99%

Kinetics for Zinc Ion Induced Sepia Pharaonis Arginine Kinase Inactivation and Aggregation

Si¹,

Lee²,

Cheng³

et al. 2016

PPL

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Arginine kinase is an essential enzyme which is closely related to energy metabolism in marine invertebrates. Arginine kinase provides a significant role in quick response to environmental change and stress. In this study, we simulated a tertiary structure of Sepia pharaonis arginine kinase (SPAK) based on the gene sequence and conducted the molecular dynamics simulations between SPAK and Zn2+. Using these results, the Zn2+ binding sites were predicted and the initial effect of Zn2+ on the SPAK structure was elucidated. Subsequently, the experimental kinetic results were compared with the simulation results. Zn2+ markedly inhibited the activity of SPAK in a manner of non-competitive inhibitions for both arginine and ATP. We also found that Zn2+ binding to SPAK resulted in tertiary conformational change accompanying with the hydrophobic residues exposure. These changes caused SPAK aggregation directly. We screened two protectants, glycine and proline, which effectively prevented SPAK aggregation and recovered the structure and activity. Overall, our study suggested the inhibitory effect of Zn2+ on SPAK and Zn2+ can trigger SPAK aggregation after exposing large extent of hydrophobic surface. The protective effects of glycine and proline against Zn2+ on SPAK folding were also demonstrated.

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Concentrations of some heavy metals in commercially important finfish and shellfish of the River Ganga

Cited by 56 publications

References 22 publications

Concentration distribution and potential health risk of heavy metals in Mactra veneriformis from Bohai Bay, China

Concentration distribution and potential health risk of heavy metals in Mactra veneriformis from Bohai Bay, China

Human health risk assessment and mitigation of heavy metal pollution in agriculture and environment

Kinetics for Zinc Ion Induced Sepia Pharaonis Arginine Kinase Inactivation and Aggregation

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