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Sandoval-Herrera N, Castillo JP, Ching MEA, Herrera M LG, Faure PA, Welch K. Non-destructive methods to assess pesticide exposure in free-living bats. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:162011. [PMID: 36737017 DOI: 10.1016/j.scitotenv.2023.162011] [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: 09/28/2022] [Revised: 12/20/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Bat populations are dwindling worldwide due to anthropogenic activities like agriculture, however the role that pesticide exposure plays on these declines is unclear. To address these research gaps, we first need to develop reliable methods to detect and monitor exposure to environmental pollutants and its effects on free-living bats. The use of biomarkers is a sensitive and informative tool to study sublethal effects in wildlife, however it requires laboratory validation and integrative approaches to be applicable to free-living species. In this study, we propose a set of non-destructive biomarkers to evaluate pesticide exposure in free-ranging bats and validated their suitability with dose-exposure experiments in captivity. We selected three biomarkers that have been widely used in vertebrate ecotoxicology and that combined represent sensitive, specific, and ecologically relevant responses to pollutants: DNA damage, AChE activity, and leukocyte profiles. We used two insectivorous bat species as model species Eptesicus fuscus (laboratory) and Pteronotus mexicanus (field). We found that micronuclei frequency (genotoxicity) and AChE activity (exposure and neurotoxicity) were robust indicators of toxicant exposure. The validity of this set of endpoints was supported by their consistent performance in laboratory and field experiments as well as by the significant correlation among them. Leukocyte profile (systemic stress) results were not consistent between laboratory and field studies, suggesting further evaluation of its suitability is needed. Integrative approaches, like the one we used here, maximize the insights about toxicant effects by combining the information of single biomarkers into more meaningful inferences, which can be applied to environmental risk assessments in wildlife. Furthermore, the use of non-destructive, cost-effective biomarkers is imperative when assessing toxicant exposure and effects in vulnerable wildlife and it should be a priority in the field of wildlife toxicology.
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Affiliation(s)
- Natalia Sandoval-Herrera
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada.
| | - Jesusa Paz Castillo
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
| | - Ma Enrica Angela Ching
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
| | - L Gerardo Herrera M
- Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México, San Patricio, Jalisco, Mexico
| | - Paul A Faure
- Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Kenneth Welch
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada; Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
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Aguilar L, Moreno-Ortiz G, Caamal-Monsreal C, Rosas C, Noreña-Barroso E, Gómez-Maldonado MC, Rodríguez-Fuentes G. Effects of Phenanthrene Exposure on the B-esterases Activities of Octopus maya (Voss and Solís Ramírez, 1996) Embryos. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 110:63. [PMID: 36917264 PMCID: PMC10014768 DOI: 10.1007/s00128-023-03706-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
No ecotoxicological information exists on phenanthrene (Phe) exposure in cephalopods, animals of commercial and ecological importance. This study investigated the effect of Phe on two B-esterases, Acetylcholinesterase (AChE) and Carboxylesterases (CbE), in Octopus maya embryos. Octopus embryos were exposed to different treatments: control (seawater), solvent control (seawater and DMSO 0.01%), 10 and 100 µg/L of Phe. AChE and CbE activities were measured at different developmental stages (blastula, organogenesis, and growth). B-esterase activities increased in control and solvent control as the embryos developed, showing no statistically significant differences between them. On the other hand, the embryos exposed to Phe had significant differences from controls, and between the high and low concentrations. Our results indicate that B-esterases are sensitive biomarkers of exposure to Phe in O. maya. Still, complementary studies are needed to unravel the toxicodynamics of Phe and the implications of the found inhibitory effect in hatched organisms.
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Affiliation(s)
- Letícia Aguilar
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - Gissela Moreno-Ortiz
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - Claudia Caamal-Monsreal
- Unidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - Carlos Rosas
- Unidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - Elsa Noreña-Barroso
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - María Concepción Gómez-Maldonado
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico
| | - Gabriela Rodríguez-Fuentes
- Unidad de Química en Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico.
- Unidad de Química en Sisal, Facultad de Química, UNAM, Av. Colón # 503 F X 62 y Reforma Colonia Centro, 97000, Mérida, Yucatán, Mexico.
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Zhao S, Wesseling S, Spenkelink B, Rietjens IMCM. Physiologically based kinetic modelling based prediction of in vivo rat and human acetylcholinesterase (AChE) inhibition upon exposure to diazinon. Arch Toxicol 2021; 95:1573-1593. [PMID: 33715020 PMCID: PMC8113213 DOI: 10.1007/s00204-021-03015-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 02/25/2021] [Indexed: 01/30/2023]
Abstract
The present study predicts in vivo human and rat red blood cell (RBC) acetylcholinesterase (AChE) inhibition upon diazinon (DZN) exposure using physiological based kinetic (PBK) modelling-facilitated reverse dosimetry. Due to the fact that both DZN and its oxon metabolite diazoxon (DZO) can inhibit AChE, a toxic equivalency factor (TEF) was included in the PBK model to combine the effect of DZN and DZO when predicting in vivo AChE inhibition. The PBK models were defined based on kinetic constants derived from in vitro incubations with liver fractions or plasma of rat and human, and were used to translate in vitro concentration-response curves for AChE inhibition obtained in the current study to predicted in vivo dose-response curves. The predicted dose-response curves for rat matched available in vivo data on AChE inhibition, and the benchmark dose lower confidence limits for 10% inhibition (BMDL10 values) were in line with the reported BMDL10 values. Humans were predicted to be 6-fold more sensitive than rats in terms of AChE inhibition, mainly because of inter-species differences in toxicokinetics. It is concluded that the TEF-coded DZN PBK model combined with quantitative in vitro to in vivo extrapolation (QIVIVE) provides an adequate approach to predict RBC AChE inhibition upon acute oral DZN exposure, and can provide an alternative testing strategy for derivation of a point of departure (POD) in risk assessment.
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Affiliation(s)
- Shensheng Zhao
- Division of Toxicology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
| | - Sebastiaan Wesseling
- Division of Toxicology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Bert Spenkelink
- Division of Toxicology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Ivonne M C M Rietjens
- Division of Toxicology, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
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Sigolaeva LV, Gladyr SY, Mergel O, Gelissen APH, Noyong M, Simon U, Pergushov DV, Kurochkin IN, Plamper FA, Richtering W. Easy-Preparable Butyrylcholinesterase/Microgel Construct for Facilitated Organophosphate Biosensing. Anal Chem 2017; 89:6091-6098. [DOI: 10.1021/acs.analchem.7b00732] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Larisa V. Sigolaeva
- Department
of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Snezhana Yu. Gladyr
- Department
of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Olga Mergel
- Institute
of Physical Chemistry II, RWTH Aachen University, 52056 Aachen, Germany
| | - Arjan P. H. Gelissen
- Institute
of Physical Chemistry II, RWTH Aachen University, 52056 Aachen, Germany
| | - Michael Noyong
- Institute
of Inorganic Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Ulrich Simon
- Institute
of Inorganic Chemistry, RWTH Aachen University, 52074 Aachen, Germany
| | - Dmitry V. Pergushov
- Department
of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Ilya N. Kurochkin
- Department
of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Felix A. Plamper
- Institute
of Physical Chemistry II, RWTH Aachen University, 52056 Aachen, Germany
| | - Walter Richtering
- Institute
of Physical Chemistry II, RWTH Aachen University, 52056 Aachen, Germany
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Makhaeva GF, Rudakova EV, Hein ND, Serebryakova OG, Kovaleva NV, Boltneva NP, Fink JK, Richardson RJ. Further studies toward a mouse model for biochemical assessment of neuropathic potential of organophosphorus compounds. J Appl Toxicol 2014; 34:1426-35. [PMID: 24395470 PMCID: PMC4085144 DOI: 10.1002/jat.2977] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 11/17/2013] [Accepted: 11/17/2013] [Indexed: 12/20/2022]
Abstract
Inhibition and aging of neuropathy target esterase (NTE) by neuropathic organophosphorus (OP) compounds triggers OP compound-induced delayed neuropathy (OPIDN), whereas inhibition of acetylcholinesterase (AChE) produces cholinergic toxicity. The neuropathic potential of an OP compound is defined by its relative inhibitory potency toward NTE vs. AChE assessed by enzyme assays following dosing in vivo or after incubations of direct-acting compounds or active metabolites with enzymes in vitro. The standard animal model of OPIDN is the adult hen, but its large size and high husbandry costs make this species a burdensome model for assessing neuropathic potential. Although the mouse does not readily exhibit clinical signs of OPIDN, it displays axonal lesions and expresses brain AChE and NTE. Therefore, the present research was performed as a further test of the hypothesis that inhibition of mouse brain AChE and NTE could be used to assess neuropathic potential using mouse brain preparations in vitro or employing mouse brain assays following dosing of OP compounds in vivo. Excellent correlations were obtained for inhibition kinetics in vitro of mouse brain enzymes vs. hen brain and human recombinant enzymes. Furthermore, inhibition of mouse brain AChE and NTE after dosing with OP compounds afforded ED(50) ratios that agreed with relative inhibitory potencies assessed in vitro. Taken together, results with mouse brain enzymes demonstrated consistent correspondence between in vitro and in vivo predictors of neuropathic potential, thus adding to previous studies supporting the validity of a mouse model for biochemical assessment of the ability of OP compounds to produce OPIDN.
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Affiliation(s)
- Galina F. Makhaeva
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - Elena V. Rudakova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - Nichole D. Hein
- Department of Neurology, University of Michigan, Ann Arbor, Michigan 48109 USA
| | - Olga G. Serebryakova
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - Nadezhda V. Kovaleva
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - Natalia P. Boltneva
- Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - John K. Fink
- Department of Neurology, University of Michigan, Ann Arbor, Michigan 48109 USA
| | - Rudy J. Richardson
- Department of Neurology, University of Michigan, Ann Arbor, Michigan 48109 USA
- Toxicology Program, University of Michigan, Ann Arbor, Michigan 48109, USA
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