Effects of air exposure at different temperatures in selected breeding lines of Pinctada fucata with different shell color

Wei, Haijun; Deng, Zhenghua; Zhao, Wang; Liao, Mingfu; Li, Youning; Yu, Gang; Chen, Mingqiang; Sun, Jing; Wang, Yu

doi:10.1016/j.aqrep.2021.100879

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…ACP and AKP, two important hydrolases in lysosomes, are important in fighting disease and non-specific immune responses ( Zhang et al, 2021 ). It has been reported that the activities of the two enzymes can be affected by air exposure in shellfish, such as Pinctada fucata , Chlamys farreri , and Argopecten irradians ( Chen et al, 2007 ; Chi et al, 2017 ; Wei et al, 2021 ). In this study, we discovered that ACP and AKP activities were increased first (6–48 h) and then kept normal or even decreased during air exposure.…”

Section: Discussionmentioning

confidence: 99%

Histological, physiological, and transcriptomic responses of hepatopancreas to air exposure in asian freshwater clam Corbicula fluminea

Zhang

et al. 2022

Front. Physiol.

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Corbicula fluminea (C. fluminea) is an important freshwater economy shellfish in China, but it often suffers from air exposure during transportation. In this study, we investigated the histological, physiological (mainly including respiratory metabolism, antioxidant capacity, and immune function), and transcriptomic responses of hepatopancreas in C. fluminea to different times of air exposure. At histological level, air exposure caused vacuolation of digestive cells (24–96 h) and enlargement of digestive tubule lumen (6–96 h) in hepatopancreas. At physiological level, the activities of enzymes related to glycolysis (hexokinase and pyruvate kinase) and anaerobic respiration (lactate dehydrogenase) were increased first (6–24 h) of air exposure, then came back to normal level or even decreased. The activity of aerobic respiration-related enzyme (succinic dehydrogenase) began to reduce from 24 h of air exposure. The activities of antioxidant enzymes (superoxide dismutase and catalase) were enhanced during 6–48 h of air exposure and then returned to control level or even inhibited. The content of malondialdehyde (MDA) increased from 96 h of air exposure. The activities of immune-related enzymes (acid phosphatase and alkaline phosphatase) increased during 6–48 h, then returned to normal or began to decline. At transcriptome level, 44 differentially expressed genes (DEGs) in the hepatopancreas were identified after 96-h air exposure. Among these DEGs, 8 were associated with glycolysis, TCA cycle, immune, and antioxidant, and were downregulated after 96-h air exposure. Taken together, these findings illuminated the response of C. fluminea to air exposure at histological, physiological, and transcriptomic levels, which will be beneficial to the aquaculture and transportation of C. fluminea.

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Section: Discussionmentioning

confidence: 99%

Histological, physiological, and transcriptomic responses of hepatopancreas to air exposure in asian freshwater clam Corbicula fluminea

Zhang

et al. 2022

Front. Physiol.

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“…in Pteria penguin, Pinctada fucata, and Perna viridis, the activity of plasma catalase (CAT), glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) was significantly enhanced (Wang et al, 2018b;Gu et al, 2020;Wei et al, 2021).…”

Section: Molecular Response On Bivalves Due To Heat Stressmentioning

confidence: 99%

Impacts of marine heat extremes on bivalves

Masanja¹,

Yang²,

Xu³

et al. 2023

Front. Mar. Sci.

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As the global ocean continues to experience the consequences of an increase in the frequency and intensity of heat waves, the trend is expected to persist into the 21st century, with a projected tripling of heat waves by 2040. This phenomenon poses a significant threat to marine ecosystems and the survival of marine organisms, including the ecologically and economically vital bivalves. Bivalves are vulnerable to harm from heat stress at various levels of biological organization, and their growth can be negatively impacted by high temperatures, potentially leading to mass mortalities and posing a threat to ecosystem quality and food security. In light of these concerns, this review aims to provide a comprehensive examination of the effects of heat stress on bivalves. It summarizes the physiological and biochemical changes that bivalves undergo in response to extreme heat events and offers an overview of the strategies they employ to mitigate their impacts. A better understanding of the underlying mechanisms of bivalve responses to heat stress is crucial in order to fully appreciate the impact of these events on these organisms. This review synthesizes the current knowledge on heat stress in bivalves and highlights the importance of further research in this area. By providing a comprehensive overview of the physiological and biochemical changes that bivalves experience during heat stress and the strategies they use to mitigate its impact, this review aims to support the development of more effective approaches to minimize heat stress in bivalves.

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Copper Deficiency Induces Oxidative Stress in Liver of Mice by Blocking the Nrf2 Pathway

Pan

Deng

Shui

et al. 2023

Biol Trace Elem Res

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Copper (Cu) is an essential metal required for many physiological processes and biological reactions.Liver is the main organ of metabolism of Cu, and is also the site where synthesis of some metalloproteins. The purpose of this study is to explore the effects of Cu de ciency on the liver, and to evaluate the changes in liver oxidative stress levels to reveal its possible impact mechanisms. Mice were feed to a nutritional Cu-de ciency diet from weaning and injected with copper sulphate (CuSO 4 ) intraperitoneally to correct Cu de ciency. Cu de ciency resulted in reduced liver index, liver histological alteration and oxidative stress, decreased the contents of Cu and ALB, elevated ALT and AST concentrations in serum together with decreased mRNA and protein expressions of Nrf 2 pathway related molecules (Nrf2, HO-1, NQO1), increased mRNA and protein expressions of Keap1. However, the supplement of CuSO 4 signi cantly ameliorated the changes mentioned above. Our results indicate that Cu de ciency can cause hepatic damage in mice is associated with the activation of oxidative stress and inhibition of Nrf 2 pathway.

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Effects of air exposure at different temperatures in selected breeding lines of Pinctada fucata with different shell color

Cited by 3 publications

References 32 publications

Histological, physiological, and transcriptomic responses of hepatopancreas to air exposure in asian freshwater clam Corbicula fluminea

Histological, physiological, and transcriptomic responses of hepatopancreas to air exposure in asian freshwater clam Corbicula fluminea

Impacts of marine heat extremes on bivalves

Copper Deficiency Induces Oxidative Stress in Liver of Mice by Blocking the Nrf2 Pathway

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