Antioxidant enzyme complex of tissues of the bivalve Mytilus galloprovincialis Lam. under normal and oxidative-stress conditions: A review

Солдатов, А. А.; Gostyukhina, O. L.; Головина, И. В.

doi:10.1134/s0003683807050092

Cited by 87 publications

(27 citation statements)

References 15 publications

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“…In this study, the activities of antioxidant enzymes and GSH and MDA levels in gills did not change significantly on Day 7 and Day 14, suggesting this oyster could maintain its redox homeostasis in gills under elevated pCO 2 exposure levels. However, CAT activity were significantly inhibited in gills after~2000 ppm pCO 2 exposure for 28 days, which indicated the endogenous antioxidant defense mechanisms were overwhelmed by produced ROS [44]. In digestive gland, the activities of these antioxidant enzymes and GSH level generally deceased significantly when exposed in periods with different exposure level, indicating the occurrence of serious oxidative stress in this tissue.…”

Section: Discussionmentioning

confidence: 92%

Effects of ocean acidification on immune responses of the Pacific oyster Crassostrea gigas

Wang

Cao

Ning

et al. 2016

Fish & Shellfish Immunology

132

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a b s t r a c tOcean acidification (OA), caused by anthropogenic CO 2 emissions, has been proposed as one of the greatest threats in marine ecosystems. A growing body of evidence shows that ocean acidification can impact development, survival, growth and physiology of marine calcifiers. In this study, the immune responses of the Pacific oyster Crassostrea gigas were investigated after elevated pCO 2 exposure for 28 days. The results demonstrated that OA caused an increase of apoptosis and reactive oxygen species (ROS) production in hemocytes. Moreover, elevated pCO 2 had an inhibitory effect on some antioxidant enzyme activities and decreased the GSH level in digestive gland. However, the mRNA expression pattern of several immune related genes varied depending on the exposure time and tissues. After exposure to pCO 2 at~2000 ppm for 28 days, the mRNA expressions of almost all tested genes were significantly suppressed in gills and stimulated in hemocytes. Above all, our study demonstrated that elevated pCO 2 have a significant impact on the immune systems of the Pacific oyster, which may constitute as a potential threat to increased susceptibility of bivalves to diseases.

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Section: Discussionmentioning

confidence: 92%

Effects of ocean acidification on immune responses of the Pacific oyster Crassostrea gigas

Wang

Cao

Ning

et al. 2016

Fish & Shellfish Immunology

132

View full text Add to dashboard Cite

show abstract

“…According to the intensity-based classification of oxidative stress proposed by Lushchak (2014), a low-intensity/mild oxidative stress is that is witnessed here. The spawning may be considered as a physiological state causing naturally induced oxidative stress in aquatic organisms (Soldatov et al 2007). Thus, Soldatov et al (2007) observed increased glutathione peroxidase and CAT activities along with elevated TBARS level in bivalve mollusk Mytilus galloprovincialis Lam, during the spawning period.…”

Section: Discussionmentioning

confidence: 99%

“…Changes in water temperature, oxygen deficiency as well as reoxygenation may affect steady-state levels of reactive oxygen species and antioxidant defenses in fish (Martínez-Á lvarez et al 2005). It is also known that release of sexual products during spawning leads to tissue degradation coupled with oxidation processes (Shulman and Love 1999), therefore, spawning could induce natural oxidative stress (Soldatov et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Annual variations in hepatic antioxidant defenses and lipid peroxidation in a temperate fish, common bream Abramis brama (L.)

2017

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Alternation of physiological states during the annual cycle (pre-spawning mobilization, spawning energy loss, post-spawning accumulation of energy reserve, declined metabolic activity during the wintering) occurring in the wide temperature range requires high plasticity of fish defense systems. The article presents a 2-year study of hepatic antioxidant defenses and lipid peroxidation in the temperate cyprinid fish, common bream Abramis brama (L.), in relation to basic annual rhythms, such as photoperiodic and temperature cycling, reproduction and feeding activity. The objective of the study was to evaluate the plasticity of antioxidant defenses in bream under normal conditions throughout the annual cycle, by measuring hepatic antioxidants (superoxide dismutase, catalase, glutathione-S-transferase activities and reduced glutathione concentrations) and products of lipid peroxidation (thiobarbituric acid reactive substances concentrations). The results suggested that hepatic levels of antioxidants in bream varied dramatically during the annual cycle allowing bream to develop necessary adaptation and implement reproduction program. The lowest values of all studied antioxidants were witnessed in the middle of winter. In early spring, antioxidant enzyme activities increased rapidly reaching their maxima in late spring and summer. Toward the end of autumn, enzyme activities were declining toward the levels observed before the ice breakup. Spring-summer up-regulation of antioxidant defenses along with increased lipid peroxidation indicated bream to be experiencing mild oxidative stress.

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“…Also consistent with the immunity function is MmeLys' expression in multiple M. meretrix tissues (i.e., hepatopancreas and gills). Remarkably, hepatopancreas and gills have been reported to represent important portal of the entry of pathogenic microorganisms in bivalve molluscs [30,58,59]; the presence of MmeLys in these tissue likely facilitate the lysozyme to function locally against invaded pathogens. Moreover, the expression of MmeLys was detected to increase in the clams after V. parahaemolyticus-challenge.…”

Section: Discussionmentioning

confidence: 99%

An i-type lysozyme from the Asiatic hard clam Meretrix meretrix potentially functioning in host immunity

Yue

Liu

Xue

2011

Fish & Shellfish Immunology

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Antioxidant enzyme complex of tissues of the bivalve Mytilus galloprovincialis Lam. under normal and oxidative-stress conditions: A review

Cited by 87 publications

References 15 publications

Effects of ocean acidification on immune responses of the Pacific oyster Crassostrea gigas

Effects of ocean acidification on immune responses of the Pacific oyster Crassostrea gigas

Annual variations in hepatic antioxidant defenses and lipid peroxidation in a temperate fish, common bream Abramis brama (L.)

An i-type lysozyme from the Asiatic hard clam Meretrix meretrix potentially functioning in host immunity

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