2018
DOI: 10.1016/j.chemosphere.2018.07.138
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Acute exposure to water-soluble fractions of marine diesel oil: Evaluation of apoptosis and oxidative stress in an ascidian

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Cited by 14 publications
(10 citation statements)
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“…Differently, a significant reduction in T-AOC was observed following CEWAF exposure compared with the Control, indicating that CEWAF exposure could produce severe damage to the antioxidant defense system in the respiratory tree of sea cucumber. Previous studies have reported that exposure to oil-derived hydrocarbons at relative high concentrations could compromise the ability of antioxidant defense system in marine benthos, which exhibited a significant reduction in the antioxidant enzymatic activities, such as superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) [19,23,48], or in the T-AOC used in the present study, which is an integrated parameter to evaluate the cumulative action of all the antioxidants present in vivo [49]. The damage of the antioxidant defense system could lead to insufficient capacity for scavenging ROS and then a significant net increase in ROS levels, which subsequently could result in extensive oxidative damage of the macromolecules (DNA, proteins, and lipids) [50,51].…”
Section: Discussionmentioning
confidence: 99%
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“…Differently, a significant reduction in T-AOC was observed following CEWAF exposure compared with the Control, indicating that CEWAF exposure could produce severe damage to the antioxidant defense system in the respiratory tree of sea cucumber. Previous studies have reported that exposure to oil-derived hydrocarbons at relative high concentrations could compromise the ability of antioxidant defense system in marine benthos, which exhibited a significant reduction in the antioxidant enzymatic activities, such as superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) [19,23,48], or in the T-AOC used in the present study, which is an integrated parameter to evaluate the cumulative action of all the antioxidants present in vivo [49]. The damage of the antioxidant defense system could lead to insufficient capacity for scavenging ROS and then a significant net increase in ROS levels, which subsequently could result in extensive oxidative damage of the macromolecules (DNA, proteins, and lipids) [50,51].…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, compared with WAF, the proportion of HMW PAHs is much higher in CEWAF, especially in 3-ringed PAHs, which has been reported to be the predominant toxic components of oil-derived hydrocarbons to marine organisms [53,54]. It has also been documented that PAHs could elevate the ROS generation during their metabolism and biotransformation processes in marine benthos, leading to an imbalance between the ROS generation and scavenging [18,19,55,56]. Likewise, the ΣPAHs concentrations in WAF and CEWAF coincided with the oxidative damage observed in the present study.…”
Section: Discussionmentioning
confidence: 99%
“…Our results show that NO levels were decreased at all time intervals upon exposure to 10, 50, and 100 ng/mL DA. Similarly, Barbosa et al [27] reported that NO 2 − levels were reduced after the ascidian Styela plicata was exposed to the marine water-soluble fraction of diesel oil (WFDO), indicating a reduction in NO production. Manju et al [28] demonstrated the protective properties by using a mouse model of DA-induced temporal lobe epilepsy.…”
Section: Discussionmentioning
confidence: 92%
“…Although crude oil comprises thousands of organic compounds, polycyclic aromatic hydrocarbons (PAHs) are generally known as the predominant toxic components of crude oil to marine organisms [27,28]. Several recent studies have reported that oil-derived PAHs could stimulate reactive oxygen species (ROS) production during their biotransformation, resulting in an elevation of ROS levels in marine organisms [2,29,30]. Overelevation of ROS levels could further induce oxidative damage of the biomacromolecules (including DNA, proteins, and lipids) [31,32], which is known as the primary mechanism involved in cell damage, apoptosis, and tissue injury in marine organisms exposed to oil-derived PAHs [29,[33][34][35][36].…”
Section: Introductionmentioning
confidence: 99%
“…Several recent studies have reported that oil-derived PAHs could stimulate reactive oxygen species (ROS) production during their biotransformation, resulting in an elevation of ROS levels in marine organisms [2,29,30]. Overelevation of ROS levels could further induce oxidative damage of the biomacromolecules (including DNA, proteins, and lipids) [31,32], which is known as the primary mechanism involved in cell damage, apoptosis, and tissue injury in marine organisms exposed to oil-derived PAHs [29,[33][34][35][36]. Additionally, numerous studies have documented that elevated temperature could cause physiological (e.g., increased oxygen consumption) and histological (e.g., tissue injury) changes in marine organisms, and it has been suggested that elevated temperature could also disturb the balance between endogenous and exogenous ROS levels and thereby cause an incapacity of the antioxidant defense system [23,[37][38][39][40][41].…”
Section: Introductionmentioning
confidence: 99%