Release and toxicity comparison between industrial- and sunscreen-derived nano-ZnO particles

Spisni, E.; Seo, Seokju; Joo, Sun Hyung; Su, Chunming

doi:10.1007/s13762-016-1077-1

Cited by 18 publications

(11 citation statements)

References 29 publications

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“…Previous results have suggested that the physical interactions of NPs induce significant oxidative stress, which provides direct evidence for the toxicological impact of engineered raw NPs in aquatic organisms [128,135]. In general, both sunscreen-derived and raw NPs can undergo photooxidation and generate ROS under sunlight irradiation, and ROS overgeneration is deemed to result in subsequent cell membrane damage, lipid peroxidation, growth inhibition, and other negative impacts [103,141,142]. Sunscreen-derived nTiO 2 has been indicated to induce the photocatalytic generation of ROS, such as H 2 O 2 , in vitro and cause growth inhibition and distribution changes in algae [9,103,104,143].…”

Section: Potential Mechanisms For the Toxicity Of Sunscreen-derived I...mentioning

confidence: 95%

“…Direct toxicology data on the effects of sunscreen-derived inorganic nTiO 2 on zooplankton, fish, and benthos are rare [49,[103][104][105][106]. A recent study indicated that nTiO 2 released from sunscreens causes repellency and mortality in shrimp (Palaemon varians) and speculated that the avoidance response might be the main factor responsible for the reduction in the shrimp population due to increasing sunscreen concentrations at the local scale [85].…”

Section: Ntio 2 Uvfsmentioning

confidence: 99%

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Environmental Fate and Toxicity of Sunscreen-Derived Inorganic Ultraviolet Filters in Aquatic Environments: A Review

et al. 2022

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An increasing number of inorganic ultraviolet filters (UVFs), such as nanosized zinc oxide (nZnO) and titanium dioxide (nTiO2), are formulated in sunscreens because of their broad UV spectrum sunlight protection and because they limit skin damage. However, sunscreen-derived inorganic UVFs are considered to be emerging contaminants; in particular, nZnO and nTiO2 UVFs have been shown to undergo absorption and bioaccumulation, release metal ions, and generate reactive oxygen species, which cause negative effects on aquatic organisms. We comprehensively reviewed the current study status of the environmental sources, occurrences, behaviors, and impacts of sunscreen-derived inorganic UVFs in aquatic environments. We find that the associated primary nanoparticle characteristics and coating materials significantly affect the environmental behavior and fate of inorganic UVFs. The consequential ecotoxicological risks and underlying mechanisms are discussed at the individual and trophic transfer levels. Due to their persistence and bioaccumulation, more attention and efforts should be redirected to investigating the sources, fate, and trophic transfer of inorganic UVFs in ecosystems.

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Section: Potential Mechanisms For the Toxicity Of Sunscreen-derived I...mentioning

confidence: 95%

Section: Ntio 2 Uvfsmentioning

confidence: 99%

Environmental Fate and Toxicity of Sunscreen-Derived Inorganic Ultraviolet Filters in Aquatic Environments: A Review

et al. 2022

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“…Accordingly, they have been detected in the environment at concentrations of up to 17.1 mg per kg dry mass in sludge (Read et al., 2016). There is increasing concern of their impact in aquatic environments due to the local accumulation and the fact that most aquatic species cannot escape exposure (Spisni, Seo, Joo, & Su, 2016). …”

Section: Introductionmentioning

confidence: 99%

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Zhang

Jansen

Meester

et al. 2018

Evolutionary Applications

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Synergistic interactions between temperature and contaminants are a major challenge for ecological risk assessment, especially under global warming. While thermal evolution may increase the ability to deal with warming, it is unknown whether it may also affect the ability to deal with the many contaminants that are more toxic at higher temperatures. We investigated how evolution of genetic adaptation to warming affected the interactions between warming and a novel stressor: zinc oxide nanoparticles (nZnO) in a natural population of Daphnia magna using resurrection ecology. We hatched resting eggs from two D. magna subpopulations (old: 1955–1965, recent: 1995–2005) from the sediment of a lake that experienced an increase in average temperature and in recurrence of heat waves but was never exposed to industrial waste. In the old “ancestral” subpopulation, exposure to a sublethal concentration of nZnO decreased the intrinsic growth rate, metabolic activity, and energy reserves at 24°C but not at 20°C, indicating a synergism between warming and nZnO. In contrast, these synergistic effects disappeared in the recent “derived” subpopulation that evolved a lower sensitivity to nZnO at 24°C, which indicates that thermal evolution could offset the elevated toxicity of nZnO under warming. This evolution of reduced sensitivity to nZnO under warming could not be explained by changes in the total internal zinc accumulation but was partially associated with the evolution of the expression of a key metal detoxification gene under warming. Our results suggest that the increased sensitivity to the sublethal concentration of nZnO under the predicted 4°C warming by the end of this century may be counteracted by thermal evolution in this D. magna population. Our results illustrate the importance of evolution to warming in shaping the responses to another anthropogenic stressor, here a contaminant. More general, genetic adaptation to an environmental stressor may ensure that synergistic effects between contaminants and this environmental stressor will not be present anymore.

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“…Unfortunately, there are no current regulations that enforce the integrity of "non-nano" and "reef-safe" advertisement claims, but consumer awareness has recently demanded that manufacturers should be more accurate Sobek, et al [112]. UV filters that seem promising to the health of marine organisms are non-nano TiO 2 and non-nano ZnO, based on their larger particle size and lower solubility rates in seawater Fabrega, et al [111][112][113][114]. Contradicting studies, however, found that non-nano UV filters were more toxic to some marine organisms compared to smaller nanoparticles Wong, et al [108,115].…”

Section: Am J Biomed Sci and Resmentioning

confidence: 99%

Natural Coral as a Biomaterial Revisited

Yahia

2021

AJBSR

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This paper first describes the state of the art of natural coral. The biocompatibility of different coral species has been reviewed and it has been consistently observed that apart from an initial transient inflammation, the coral shows no signs of intolerance in the short, medium, and long term. Immune rejection of coral implants was not found in any tissue examined. Other studies have shown that coral does not cause uncontrolled calcification of soft tissue and those implants placed under the periosteum are constantly resorbed and replaced by autogenous bone. The available studies show that the coral is not cytotoxic and that it allows cell growth. Thirdly, porosity and gradient of porosity in ceramics is explained based on far from equilibrium thermodynamics. It is known that the bone cross-section from cancellous to cortical bone is non-uniform in porosity and in pore size. Thus, it is hypothesized that a damaged bone containing both cancellous and cortical bone can be better replaced by a graded/gradient porous implant based on the idea of a biomimetic approach. The purpose of this article is to review and summarize all the pertinent work that has been published on natural coral as a bone graft during the last twenty years including in vitro, animal, and clinical human studies. In addition, as an illustration, we report the clinical experience of one of us using coral. It is a case study of complex femoral fracture (Table 1) where the essential role of vascularization and stabilization of the fracture site are underlined. The results are supported with more than 300 other femoral fractures treated using the same modus operandi. Finally, this paper overviews the ecological and ethical concerns around the use of corals as well as discussing briefly about recent impacts of nano-pollutants. Table 1: Radiographic Evolution of the Femoral Neck of the Young Patient. Pre-op t = 0 monthThe femoral fracture is located in the lower half of the femur. The hearth has 4 large fragments and a few small shards. t = 7 MonthsThe reduction of the focal point is very approximate. The osteosynthesis by platelets persists an axial deviation and a stable inter-fragmentary gap prevents consolidation.Post-op t = D0 + 1 The recovery restores the diaphyseal axis and anatomically restores the diaphysis. The coral graft is distributed in contact with the shelled femoral sleeve. t = 3 monthsThe spheres are no longer visible on a visual scale and an inhomogeneous bone callus surrounds the focal point of the fracture.

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Release and toxicity comparison between industrial- and sunscreen-derived nano-ZnO particles

Cited by 18 publications

References 29 publications

Environmental Fate and Toxicity of Sunscreen-Derived Inorganic Ultraviolet Filters in Aquatic Environments: A Review

Environmental Fate and Toxicity of Sunscreen-Derived Inorganic Ultraviolet Filters in Aquatic Environments: A Review

Thermal evolution offsets the elevated toxicity of a contaminant under warming: A resurrection study in Daphnia magna

Natural Coral as a Biomaterial Revisited

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