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Vileno B, Port-Lougarre Y, Giménez-Arnau E. Electron paramagnetic resonance and spin trapping to detect free radicals from allergenic hydroperoxides in contact with the skin: from the molecule to the tissue. Contact Dermatitis 2022; 86:241-253. [PMID: 34982482 DOI: 10.1111/cod.14037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/22/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022]
Abstract
A major research topic consists of revealing the contribution of radical-mediated reactions in dermatological diseases related to xenobiotic-induced stress, to succeed risk assessment procedures protecting producers and consumers. Allergic contact dermatitis is the clinically relevant consequence of skin sensitization, one of the most critical occupational and environmental health issues related to xenobiotics exposure. The first key event identified for the skin sensitization process to a chemical is its aptitude to react with epidermal proteins and form antigenic structures that will further trigger the immune response. Many chemical sensitizers are suspected to react through mechanisms involving radical intermediates. This review focuses on recent progress we have accomplished over the last few years studying radical intermediates derived from skin sensitizing chemicals by electron paramagnetic resonance in combination with the spin trapping technique. Our work is carried out "from the molecule", performing studies in solution, "to the tissue", by the development of a methodology on a reconstructed human epidermis model, very close in terms of histology and metabolic/enzymatic activity to real human epidermis, that can be used as suitable biological tissue model. The benefits are to test chemicals under conditions close to human use and real-life sensitization exposures and benefit from the 3D microenvironment. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bertrand Vileno
- POMAM Laboratory, CNRS, Institute of Chemistry UMR 7177, University of Strasbourg, Strasbourg, France
| | - Yannick Port-Lougarre
- Dermatochemistry Laboratory, CNRS, Institute of Chemistry UMR 7177, University of Strasbourg, Strasbourg, France
| | - Elena Giménez-Arnau
- Dermatochemistry Laboratory, CNRS, Institute of Chemistry UMR 7177, University of Strasbourg, Strasbourg, France
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Galbiati V, Maddalon A, Iulini M, Marinovich M, Corsini E. Human keratinocytes and monocytes co-culture cell system: An important contribution for the study of moderate and weak sensitizers. Toxicol In Vitro 2020; 68:104929. [DOI: 10.1016/j.tiv.2020.104929] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/10/2020] [Accepted: 06/30/2020] [Indexed: 12/17/2022]
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Benelli G, Pavela R, Cianfaglione K, Sender J, Danuta U, Maślanko W, Canale A, Barboni L, Petrelli R, Zeppa L, Aguzzi C, Maggi F. Ascaridole-rich essential oil from marsh rosemary (Ledum palustre) growing in Poland exerts insecticidal activity on mosquitoes, moths and flies without serious effects on non-target organisms and human cells. Food Chem Toxicol 2020; 138:111184. [PMID: 32061727 DOI: 10.1016/j.fct.2020.111184] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/20/2019] [Accepted: 02/06/2020] [Indexed: 12/21/2022]
Abstract
Marsh rosemary (Ledum palustre, Ericaceae) has been widely used in the traditional medicine of various regions worldwide, and as insect repellent. Little is known on its essential oil insecticidal potential. This study explored the insecticidal effects of the essential oil obtained from L. palustre growing in Poland on selected insect pests and vectors. GC-MS analysis evidenced an uncommon chemotype characterized by ascaridole (35.3% as sum of cis-ascaridole and isoascaridole) and p-cymene (25.5%). The essential oil was effective against Culex quinquefasciatus, Spodoptera littoralis and Musca domestica, showing LC50/LD50 of 66.6 mg L-1, 117.2 μg larva-1 and 61.4 μg adult-1, respectively. It was not toxic to non-target Eisenia fetida earthworms and moderately toxic to Daphnia magna microcrustaceans, over the positive control α-cypermethrin. The essential oil cytotoxicity on human keratinocytes and fibroblasts showed high IC50 values (71.3 and 84.4 μg mL-1, respectively). Comet assay data highlighted no DNA damages. Based on our findings, this essential oil, characterized by the ascaridole/p-cymene chemotype, could be a candidate for the formulation of botanical insecticides; large-scale production of green insecticides by this rare species may be assured by ex situ cultivation and biotechnological techniques.
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Affiliation(s)
- Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124, Pisa, Italy.
| | - Roman Pavela
- Crop Research Institute, Drnovska 507, 161 06, Prague, Czech Republic
| | - Kevin Cianfaglione
- EA 2219 Géoarchitecture, UFR Sciences & Techniques, Université de Bretagne Occidentale, 6 Avenue Victor Le Gorgeu, F-29200, Brest, France; School of Biosciences and Veterinary Medicine, University of Camerino, via Pontoni, 5 62032, Camerino, Italy
| | - Joanna Sender
- Department of Hydrobiology and Protection of Ecosystems, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-262, Lublin, Poland
| | - Urban Danuta
- Institute of Soil Science and Environment Shaping, Department of Natural Foundations of Forestry, University of Life Sciences in Lublin, Leszczyńskiego 7, 20-069, Lublin, Poland
| | - Weronika Maślanko
- Department of Animal Ethology and Wildlife Management, University of Life Sciences in Lublin, Akademicka 13 Street, 20-950, Lublin, Poland
| | - Angelo Canale
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124, Pisa, Italy
| | - Luciano Barboni
- School of Sciences and Technology, University of Camerino, via Sant'Agostino 1, 62032, Camerino, Italy
| | - Riccardo Petrelli
- School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032, Camerino, Italy
| | - Laura Zeppa
- School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032, Camerino, Italy
| | - Cristina Aguzzi
- School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032, Camerino, Italy
| | - Filippo Maggi
- School of Pharmacy, University of Camerino, via Sant'Agostino 1, 62032, Camerino, Italy
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Schellenberger MT, Bock U, Hennen J, Groeber-Becker F, Walles H, Blömeke B. A coculture system composed of THP-1 cells and 3D reconstructed human epidermis to assess activation of dendritic cells by sensitizing chemicals after topical exposure. Toxicol In Vitro 2019; 57:62-66. [DOI: 10.1016/j.tiv.2019.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/28/2019] [Accepted: 02/05/2019] [Indexed: 12/22/2022]
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Sahli F, Sousa MSE, Vileno B, Lichter J, Lepoittevin JP, Blömeke B, Giménez-Arnau E. Understanding the skin sensitization capacity of ascaridole: a combined study of chemical reactivity and activation of the innate immune system (dendritic cells) in the epidermal environment. Arch Toxicol 2019; 93:1337-1347. [DOI: 10.1007/s00204-019-02444-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/09/2019] [Indexed: 01/08/2023]
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Monzote L, Geroldinger G, Tonner M, Scull R, De Sarkar S, Bergmann S, Bacher M, Staniek K, Chatterjee M, Rosenau T, Gille L. Interaction of ascaridole, carvacrol, and caryophyllene oxide from essential oil of Chenopodium ambrosioides L. with mitochondria in Leishmania and other eukaryotes. Phytother Res 2018; 32:1729-1740. [PMID: 29672979 PMCID: PMC6208284 DOI: 10.1002/ptr.6097] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/07/2018] [Accepted: 03/27/2018] [Indexed: 11/22/2022]
Abstract
The antileishmanial activity of the essential oil (EO) from Chenopodium ambrosioides L. has been demonstrated in vitro and in animal models, attributed to the major components of the EO. This study focused on the effects of the three major EO compounds carvacrol, caryophyllene oxide (Caryo), and the antileishmanial endoperoxide ascaridole (Asc) on mitochondrial functions in Leishmania tarentolae promastigotes (LtP). EO and Caryo were able to partially inhibit the leishmanial electron transport chain, whereas other components failed to demonstrate a direct immediate effect. Caryo demonstrated inhibition of complex III activity in LtP and in isolated complex III from other species. The formation of superoxide radicals was studied in Leishmania by electron spin resonance spectroscopy in the presence of iron chelators wherein selected compounds failed to trigger a significant immediate additional superoxide production in LtP. However, upon prolonged incubation of Leishmania with Asc and especially in the absence of iron chelators (allowing the activation of Asc), an increased superoxide radical production and significant impairment of mitochondrial coupling in Leishmania was observed. Prolonged incubation with all EO components resulted in thiol depletion. Taken together, the major components of EO mediate their leishmanicidal activity via different mitochondrial targets and time profiles. Further studies are required to elucidate possible synergistic effects of carvacrol and Asc and the influence of minor compounds.
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Affiliation(s)
- Lianet Monzote
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria.,Department of Parasitology, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba
| | - Gerald Geroldinger
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Matthias Tonner
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Ramón Scull
- Department of Chemistry, Institute of Pharmacy and Food, Havana University, Havana, Cuba
| | - Sritama De Sarkar
- Department of Pharmacology, Institute of Postgraduate Medical Education & Research, Kolkata, India
| | - Sophie Bergmann
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Markus Bacher
- Department of Chemistry, Division of Chemistry of Renewables, University of Natural Resources and Life Sciences, Tulln, Austria
| | - Katrin Staniek
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Mitali Chatterjee
- Department of Pharmacology, Institute of Postgraduate Medical Education & Research, Kolkata, India
| | - Thomas Rosenau
- Department of Chemistry, Division of Chemistry of Renewables, University of Natural Resources and Life Sciences, Tulln, Austria
| | - Lars Gille
- Institute of Pharmacology and Toxicology, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
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Chittiboyina AG, Avonto C, Khan IA. What Happens after Activation of Ascaridole? Reactive Compounds and Their Implications for Skin Sensitization. Chem Res Toxicol 2016; 29:1488-92. [PMID: 27513446 DOI: 10.1021/acs.chemrestox.6b00157] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To replace animal testing and improve the prediction of skin sensitization, significant attention has been directed to the use of alternative methods. The direct peptide reactivity assay (DPRA), the regulatory agencies' approved alternative in chemico method, has been applied for understanding the sensitization capacity of activated ascaridole. Ascaridole, the oxidative metabolite of α-terpinene, is considered to be one of the components responsible for the contact allergy associated with essential oils derived from Chenopodium and Melaleuca species. The recently developed high-throughput screening based on the dansyl cysteamine (HTS-DCYA) method was applied to understand the reported enhanced reactivity of activated ascaridole and possibly to identify the resulting elusive radical or other reactive species. For the first time, a substituted cyclohexenone was identified as a potential electrophilic intermediate resulting in higher depletion of nucleophilic DCYA, along with several nonreactive byproducts of ascaridole via a radical degradation mechanism. Formation of electrophilic species via radical degradation is one of the possible pathways should be considered for the peptide reactivity of in aged tea tree oil or oils rich in terpinenes along with commonly believed reactants, allylic-epoxides and allylic-peroxides.
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Affiliation(s)
- Amar G Chittiboyina
- National Center for Natural Products Research, ‡Division of Pharmacognosy, Department of BioMolecular Sciences; School of Pharmacy, University of Mississippi , University, Mississippi 38677, United States
| | - Cristina Avonto
- National Center for Natural Products Research, ‡Division of Pharmacognosy, Department of BioMolecular Sciences; School of Pharmacy, University of Mississippi , University, Mississippi 38677, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, ‡Division of Pharmacognosy, Department of BioMolecular Sciences; School of Pharmacy, University of Mississippi , University, Mississippi 38677, United States
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