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Fu T, Calabrese V, Bancel S, Quéau H, Garnero L, Delorme N, Abbaci K, Salvador A, Chaumot A, Geffard O, Degli-Esposti D, Ayciriex S. ToF-SIMS imaging shows specific lipophilic vitamin alterations in chronic reprotoxicity caused by the emerging contaminant Pravastatin in Gammarus fossarum. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 271:106935. [PMID: 38723468 DOI: 10.1016/j.aquatox.2024.106935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 05/21/2024]
Abstract
Blood lipid-lowering agents, such as Pravastatin, are among the most frequently used pharmaceuticals released into the aquatic environment. Although their effects on humans are very well understood, their consequences on freshwater organisms are not well known, especially in chronic exposure conditions. Gammarus fossarum is commonly used as sentinel species in ecotoxicology because of its sensitivity to a wide range of environmental contaminants and the availability of standardized bioassays. Moreover, there is an increased interest in linking molecular changes in sentinel species, such as gammarids, to observed toxic effects. Here, we performed a reproductive toxicity assay on females exposed to different concentrations of pravastatin (30; 300; 3,000 and 30,000 ng L-1) during two successive reproductive cycles and we applied ToF-SIMS imaging to evaluate the effect of pravastatin on lipid homeostasis in gammarids. Reproductive bioassay showed that pravastatin could affect oocyte development in Gammarus fossarum inducing embryotoxicity in the second reproductive cycle. Mass spectrometry imaging highlighted the disruption in vitamin E production in the oocytes of exposed female gammarids at the second reproductive cycle, while limited alterations were observed in other lipid classes, regarding both production and tissue distribution. The results demonstrated the interest of applying spatially resolved lipidomics by mass spectrometry imaging to assess the molecular effects induced by long-term exposure to environmental pharmaceutical residues in sentinel species.
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Affiliation(s)
- Tingting Fu
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Valentina Calabrese
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Sarah Bancel
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Hervé Quéau
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Laura Garnero
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Nicolas Delorme
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Khedidja Abbaci
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Arnaud Salvador
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France
| | - Arnaud Chaumot
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | - Olivier Geffard
- INRAEe, UR RiverLy, Ecotoxicology Team, Villeurbanne F-69625, France
| | | | - Sophie Ayciriex
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, Villeurbanne F-69100, France.
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Taktikakis P, Côté M, Subramaniam N, Kroeger K, Youssef H, Badia A, DeWolf C. Understanding the Retention of Vaping Additives in the Lungs: Model Lung Surfactant Membrane Perturbation by Vitamin E and Vitamin E Acetate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5651-5662. [PMID: 38437623 DOI: 10.1021/acs.langmuir.3c02952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Deviations from the normal physicochemical and functional properties of pulmonary surfactants are associated with the incidence of lung injury and other respiratory disorders. This study aims to evaluate the alteration of the 2D molecular organization and morphology of pulmonary surfactant model membranes by the electronic cigarette additives α-tocopherol (vitamin E) and α-tocopherol acetate (vitamin E acetate), which have been associated with lung injury, termed e-cigarette or vaping-use-associated lung injury (EVALI). The model membranes used contained a 7:3 molar ratio of DPPC (1,2-dipalmitoyl-sn-glycero-3-phosphocholine) and POPG (1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoglycerol) to which α-tocopherol and α-tocopherol acetate were added to form mixtures of up to 20 mol % additive. The properties of the neat tocopherol additives and DPPC/POPG (7:3) mixtures with increasing molar proportions of additive were evaluated by surface pressure-area isotherms, excess area calculations, Brewster angle microscopy, grazing incidence X-ray diffraction, X-ray reflectivity, and atomic force microscopy. The addition of either additive alters the essential phase balance of the model pulmonary surfactant membrane by generating a greater proportion of the fluid phase. Despite this net fluidization, both tocopherol additives have space-filling effects on the liquid-expanded and condensed phases, yielding negative excess areas in the liquid-expanded phase and reduced tilt angles in the condensed phase. Both tocopherol additives alter the stability of the fluid phase, pushing the eventual collapse of this phase to higher surface pressures than the model membrane in the absence of an additive.
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Affiliation(s)
- Panagiota Taktikakis
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Mathieu Côté
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Nivetha Subramaniam
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Kailen Kroeger
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Hala Youssef
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Antonella Badia
- Département de chimie and Institut Courtois, Université de Montréal, Complexe des sciences, C.P. 6128, succursale Centre-ville, Montréal, Quebec H3C 3J7, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
| | - Christine DeWolf
- Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, 7141 Sherbrooke St. W., Montréal, Quebec H4B 1R6, Canada
- FRQNT Quebec Centre for Advanced Materials, 2101, rue Jeanne-Mance, Montréal, Quebec H2X 2J6, Canada
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DiPasquale M, Nguyen MHL, Castillo SR, Dib IJ, Kelley EG, Marquardt D. Vitamin E Does Not Disturb Polyunsaturated Fatty Acid Lipid Domains. Biochemistry 2022; 61:2366-2376. [PMID: 36227768 DOI: 10.1021/acs.biochem.2c00405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The function of vitamin E in biomembranes remains a prominent topic of discussion. As its limitations as an antioxidant persist and novel functions are discovered, our understanding of the role of vitamin E becomes increasingly enigmatic. As a group of lipophilic molecules (tocopherols and tocotrienols), vitamin E has been shown to influence the properties of its host membrane, and a wealth of research has connected vitamin E to polyunsaturated fatty acid (PUFA) lipids. Here, we use contrast-matched small-angle neutron scattering and differential scanning calorimetry to integrate these fields by examining the influence of vitamin E on lipid domain stability in PUFA-based lipid mixtures. The influence of α-tocopherol, γ-tocopherol, and α-tocopherylquinone on the lateral organization of a 1:1 lipid mixture of saturated distearoylphosphatidylcholine (DSPC) and polyunsaturated palmitoyl-linoleoylphosphatidylcholine (PLiPC) with cholesterol provides a complement to our growing understanding of the influence of tocopherol on lipid phases. Characterization of domain melting suggests a slight depression in the transition temperature and a decrease in transition cooperativity. Tocopherol concentrations that are an order of magnitude higher than anticipated physiological concentrations (2 mol percent) do not significantly perturb lipid domains; however, addition of 10 mol percent is able to destabilize domains and promote lipid mixing. In contrast to this behavior, increasing concentrations of the oxidized product of α-tocopherol (α-tocopherylquinone) induces a proportional increase in domain stabilization. We speculate how the contrasting effect of the oxidized product may supplement the antioxidant response of vitamin E.
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Affiliation(s)
- Mitchell DiPasquale
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, OntarioN9B3P4, Canada
| | - Michael H L Nguyen
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, OntarioN9B3P4, Canada
| | - Stuart R Castillo
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, OntarioN9B3P4, Canada
| | - Isabelle J Dib
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, OntarioN9B3P4, Canada
| | - Elizabeth G Kelley
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland20878, United States
| | - Drew Marquardt
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, OntarioN9B3P4, Canada.,Department of Physics, University of Windsor, Windsor, OntarioN9B3P4, Canada
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