Assessment of toxic metal pollution in Yueqing Bay and the extent of metal-induced oxidative stress in Tegillarca granosa raised in this water

Yang, Yuqing; Wang, Mengci; Yu, Xinyu; Wei, Jinyan; Wu, Shuwen; Wu, Chenghui; Chang, Alan Kueichieh; Ying, Xueping

doi:10.1016/j.marpolbul.2023.115444

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Trace elements are among these ubiquitous contaminants, and they are characterized by persistence, nondegradability in the environment, and accumulation in organisms (Lebrun and Gismondi, 2020). Even when trace element levels are generally low, long-term exposure can result in irreversible damage to aquatic organisms (Yang et al, 2023). Hence, national and local authorities oversee environmental trace element monitoring.…”

Section: Introductionmentioning

confidence: 99%

“…The integrated approach of measuring multiple biomarkers to assess the quality of aquatic environments has become popular because it does not depend on a single biomarker, for which values can vary greatly (Duarte et al, 2017;Lin et al, 2018;Yang et al, 2023). This approach also means that molecular and biochemical biomarkers can be monitored and act as early warning signs of exposure to and effects of pollutants before the environment is damaged.…”

Section: Introductionmentioning

confidence: 99%

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Integrated assessment of trace elements in a marine ranching area based on multi-species and multi-level biomarkers: a case study in China’s national-level marine ranching demonstration area

Li,

Chen,

et al. 2024

Front. Mar. Sci.

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The goal of this study was to evaluate the trace element pollution in a marine ranching area in China based on molecular responses (expression of metallothionein and antioxidant enzyme genes), and biochemical biomarkers (metallothionein content, antioxidant enzyme activities, and malonaldehyde level) in four indicator species. We collected samples of two fish (Lateolabrax maculatus and Sebastes schlegelii), one crustacean (Charybdis japonica), and one gastropod (Rapana venosa) from the western Furong Island marine ranching area and from an adjacent area in March 2022 and measured the trace element content in these indicator species as well as in the seawater and sediment. We found that the bioaccumulation characteristics of trace elements and the response patterns of biomarkers were species specific. Moreover, not every biomarker was significantly correlated with environmental trace element content. We then established two biomarker combinations indicative of trace element pollution in seawater and sediment, respectively, based on the correlation between biomarkers and trace element contents. The selected biomarkers were integrated using integrated biomarker response version 2 (IBRv2). IBRv2 values in the studied marine ranching area were lower than those in the adjacent area. Additionally, these values were consistent with the bioaccumulation of trace elements in the indicator species, the integrated trace element pollution index for seawater, and the potential risk index for sediment. These results show that this multi-biomarker and multi-species IBRv2 approach provided a comprehensive diagnosis of trace element pollution in the marine ranching area. Therefore, its application may be beneficial for marine environmental monitoring and management in view of the ecotoxicological impact of pollutants on organisms.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Integrated assessment of trace elements in a marine ranching area based on multi-species and multi-level biomarkers: a case study in China’s national-level marine ranching demonstration area

Li,

Chen,

et al. 2024

Front. Mar. Sci.

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Decadal changes of macrofauna community in a semi-enclosed Bay of Yueqing in East China Sea

Liu,

Liao,

Zeng

et al. 2024

Marine Pollution Bulletin

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Reversal of cadmium-induced toxicity in Meretrix meretrix as determined by alleviation of oxidative damage following short-term depuration

Zhou,

Cai,

Zhong

et al. 2024

Front. Mar. Sci.

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Cadmium (Cd) is a toxic heavy metal that, when present as a pollutant in the marine environment, is readily accumulated by marine bivalves, causing oxidative stress and tissue damage. This study explored whether short-term depuration could reverse Cd2+-induced toxicity in the ovary of the clam Meretrix meretrix. Clams exposed to 3 mg·L-1 Cd2+ for three days showed increased accumulated Cd2+ in their ovaries with obvious tissue damage as shown by loose structure and some apoptotic cells compared with non-exposed clams. Increased oxidative stress in the ovarian tissue was also obvious, as revealed by increased levels of oxidative indicators such as reactive oxygen species (ROS), malondialdehyde (MDA), DNA-protein crosslinking (DPC), and protein carbonylation (PCO) and increased expression levels of genes related to oxidative stress and apoptosis, which included the Bax, Bcl-2, caspase-3, HO-1, Hsp70, NQO1, Nrf2, and MT genes. When the clams were exposed to Cd2+ for three more days, the accumulated Cd2+ level in the ovary increased to more than 10-fold the level in the control clams, accompanied by more severe damage and cell death as well as oxidative stress. However, when the initial three-day Cd2+ exposure was followed by three days of depuration in Cd2+-free seawater, the Cd2+ level in the ovary was reduced by as much as 20%, accompanied by some recovery of tissue damage and reduced oxidative stress, suggesting that short-term depuration may mitigate Cd2+-induced toxicity in M. meretrix, allowing the clams to recover and potentially reducing the risk of Cd2+ exposure from consuming contaminated clams.

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Assessment of toxic metal pollution in Yueqing Bay and the extent of metal-induced oxidative stress in Tegillarca granosa raised in this water

Cited by 3 publications

References 42 publications

Integrated assessment of trace elements in a marine ranching area based on multi-species and multi-level biomarkers: a case study in China’s national-level marine ranching demonstration area

Integrated assessment of trace elements in a marine ranching area based on multi-species and multi-level biomarkers: a case study in China’s national-level marine ranching demonstration area

Decadal changes of macrofauna community in a semi-enclosed Bay of Yueqing in East China Sea

Reversal of cadmium-induced toxicity in Meretrix meretrix as determined by alleviation of oxidative damage following short-term depuration

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