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Groswald AM, Gripshover TC, Watson WH, Wahlang B, Luo J, Jophlin LL, Cave MC. Investigating the Acute Metabolic Effects of the N-Methyl Carbamate Insecticide, Methomyl, on Mouse Liver. Metabolites 2023; 13:901. [PMID: 37623845 PMCID: PMC10456691 DOI: 10.3390/metabo13080901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/26/2023] Open
Abstract
Many pesticides have been identified as endocrine and metabolism-disrupting chemicals with hepatotoxic effects. However, data are limited for insecticides in the n-methyl carbamate class, including methomyl. Here, we investigate the liver and systemic metabolic effects of methomyl in a mouse model. We hypothesize that methomyl exposure will disrupt xenobiotic and intermediary metabolism and promote hepatic steatosis in mice. Male C57BL/6 mice were exposed daily to 0-5 mg/kg methomyl for 18 days. Mice were fed water and regular chow diet ad libitum. Metabolic phenotyping was performed, and tissue samples were collected. Effects were generally greatest at the highest methomyl dose, which induced Cyp1a2. Methomyl decreased whole body weight while the liver:body weight and testes:body weight ratios were increased. Hepatic steatosis increased while plasma LDL decreased. Fasting blood glucose and the glucose tolerance test area under the curve decreased along with hepatic glycogen stores. Methomyl, however, did not increase liver oxidative stress or injury. Collectively, these data demonstrate that methomyl disrupts hepatic xenobiotic and intermediary metabolism while increasing the testes:body weight ratio, suggesting that it may be an endocrine disrupting chemical. Besides methomyl's known action in cholinesterase inhibition, it may be involved in aryl hydrocarbon receptor activation. The potential impact of n-methyl carbamate insecticides on metabolic health and diseases, including toxicant-associated steatotic liver disease (TASLD), warrants further investigation.
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Affiliation(s)
- Amy M. Groswald
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
| | - Tyler C. Gripshover
- Department of Pharmacology & Toxicology, School of Medicine, University of Louisville, Louisville, KY 40202, USA;
| | - Walter H. Watson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY 40202, USA
- The University of Louisville Alcohol Research Center, Louisville, KY 40202, USA
- The Center for Integrative Environmental Health Sciences, Louisville, KY 40202, USA
| | - Banrida Wahlang
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
- Department of Pharmacology & Toxicology, School of Medicine, University of Louisville, Louisville, KY 40202, USA;
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY 40202, USA
- The University of Louisville Alcohol Research Center, Louisville, KY 40202, USA
- The Center for Integrative Environmental Health Sciences, Louisville, KY 40202, USA
- The University of Louisville Superfund Research Center, Louisville, KY 40202, USA
| | - Jianzhu Luo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY 40202, USA
| | - Loretta L. Jophlin
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY 40202, USA
- The University of Louisville Alcohol Research Center, Louisville, KY 40202, USA
- The Center for Integrative Environmental Health Sciences, Louisville, KY 40202, USA
| | - Matthew C. Cave
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY 40202, USA; (A.M.G.); (W.H.W.); (B.W.); (J.L.); (L.L.J.)
- Department of Pharmacology & Toxicology, School of Medicine, University of Louisville, Louisville, KY 40202, USA;
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY 40202, USA
- The University of Louisville Alcohol Research Center, Louisville, KY 40202, USA
- The Center for Integrative Environmental Health Sciences, Louisville, KY 40202, USA
- The University of Louisville Superfund Research Center, Louisville, KY 40202, USA
- Department of Biochemistry & Molecular Genetics, School of Medicine, University of Louisville, Louisville, KY 40202, USA
- Robley Rex Veterans Affairs Medical Center, Louisville, KY 40206, USA
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Chabane K, Khene MA, Zaida F, Ainouz L, Giaimis J, Mameri S, Baz A. Subacute and subchronic methomyl exposure induced toxic effects on intestines via oxidative stress in male albino rats: biochemical and histopathological study. Drug Chem Toxicol 2022; 45:523-536. [DOI: 10.1080/01480545.2020.1727496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kahina Chabane
- Laboratory of Biology and Organism Physiology, University of Sciences and Technology, Houari Boumediene (USTHB), Algiers, Algeria
- Laboratory of Biology and Animal Physiology, ENS Kouba, Algiers, Algeria
| | | | - Faiza Zaida
- Laboratory of Biology and Animal Physiology, ENS Kouba, Algiers, Algeria
| | - Lynda Ainouz
- Laboratory of Biology and Animal Physiology, ENS Kouba, Algiers, Algeria
| | - Jean Giaimis
- UMR Qualisud-Faculty of Pharmacy, University of Montpellier I, Montpellier, France
| | - Saâdia Mameri
- Laboratory of Anatomopathology, Mustapha Bacha Hospital, Algiers, Algeria
| | - Ahsene Baz
- Laboratory of Biology and Animal Physiology, ENS Kouba, Algiers, Algeria
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Oxidative stress induced by methomyl exposure reduces the quality of early embryo development in mice. ZYGOTE 2021; 30:57-64. [PMID: 33966682 DOI: 10.1017/s0967199421000277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Methomyl is a widely used carbamate insecticide and environmental oestrogen that has adverse effects on the reproductive system. However, there have been no reports on the effect of methomyl on early embryos in mammals. In this study, we explored the effect of methomyl exposure on the quality of early embryonic development in mice and the possible mechanisms. During in vitro culture, different concentrations of methomyl (10, 20, 30 and 35 μM) were added to mouse zygote medium. The results showed that methomyl had an adverse effect on early embryonic development. Compared with the control group, the addition of 30 μM methomyl significantly reduced the rate of early embryo blastocyst formation. Methomyl exposure can increase oxidative stress and impair mitochondrial function, which may be the cause of blastocyst formation. In addition, we found that methomyl exposure promoted apoptosis and autophagy in mouse blastocysts. The toxic effect of methomyl on early embryos may be the result of oxidative stress induction. Taken together, our results indicate that methomyl can cause embryonic development defects in mice, thereby reducing the quality of early embryo development.
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Tatar S, Yildirim NC, Serdar O, Erguven GO. Can Toxicities Induced by Insecticide Methomyl be Remediated Via Soil Bacteria Ochrobactrum thiophenivorans and Sphingomonas melonis? Curr Microbiol 2021; 77:1301-1307. [PMID: 32462223 DOI: 10.1007/s00284-020-02042-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The research study was about revealing the biochemical response of Gammarus pulex related to insecticide methomyl before and after bioremediation by two soil bacteria species, Ochrobactrum thiophenivorans and Sphingomonas melonis. Catalase (CAT), glutathione S-transferase.(GST), cytochrome. P4501A1 (CYP1A1) activities in G. Pulex related to methomyl solution were investigated in 24 h and 96 h. ELISA method was used for test studies. CAT enzyme was decreased in Gammarus pulex that was exposed to methomyl after all exposure period (P < 0.05). CAT activities were returned to control results after bioremediation assays. GST enzyme activity was decreased depending on methomyl exposure during 24 h but increased during 4 days (P < 0.05). After 8 days of bioremediation period, GST activity increased again during 24 h while decreased during 4 days (P < 0.05). CYP1A1 activity increased in Gammarus pulex that was exposed to methomyl after all exposure period (P > 0.05). After bioremediation, statistically significant changes were not revealed in CYP1A1 activities (P > 0.05). According to the results of our study, CYP1A1, CAT, and GST activities in G. pulex sanctioned the capability of Ochrobactrum thiophenivorans and Sphingomonas melonis in methomyl bioremediation. Isolated and enriched Ochrobactrum thiophenivorans and Sphingomonas melonis that were added to 2.5 ppb concentrations of methomyl for 8 days. Each day, chemical oxygen demand (COD) and biochemical oxygen demand (BOD5), pH and dissolved oxygen parameters were monitored. At the final phase of the bioremediation step, it was determined that these bacteria have efficient methomyl bioremediation properties in a mixed corsortia at a rate of 86%. These results show that these bacteria can be used for bioremediate the receiving environments that are polluted by these kinds of insecticides.
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Affiliation(s)
- Sule Tatar
- Department of Chemistry and Chemical Processes, Tunceli Vocation School, Munzur University, 62000, Tunceli, Turkey
| | - Nuran Cikcikoglu Yildirim
- Department of Veterinary Medicine, Laboratorian and Veterinarian Health Programme, Pertek Sakine Genc Vocation School, Munzur University, 62000, Tunceli, Turkey
| | - Osman Serdar
- Faculty of Fisheries, Munzur University, 62000, Tunceli, Turkey
| | - Gokhan Onder Erguven
- Department of Chemistry and Chemical Processes, Tunceli Vocation School, Munzur University, 62000, Tunceli, Turkey.
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Amine KM, Kahina C, Nawel H, Faiza Z, Jean G, Mohamed T, Saâdia M, Ahsene B. Protective Effects of Pelargonium graveolens Essential Oil on Methomyl-Induced Oxidative Stress and Spatial Working Memory Impairment in Association with Histopathological Changes in the Hippocampus of Male Wistar Rats. Basic Clin Neurosci 2020; 11:433-446. [PMID: 33613881 PMCID: PMC7878032 DOI: 10.32598/bcn.11.4.1402.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 06/25/2018] [Accepted: 12/15/2019] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Methomyl (MET) is a carbamate insecticide, used in agriculture and public health to eliminate harmful insects. Besides its advantages in agriculture, it causes neurotoxic effects. The aim of this study was to evaluate the effect of MET on Spatial Working Memory (SWM), oxidative stress parameters, and histopathological changes in the hippocampus, as well as the possible protective role of Pelargonium graveolens Essential Oil (EO). METHODS Male Wistar rats were randomized into four groups of six animals: group I as the control that received the vehicle; group II received EO (75 mg/kg b.w), group III received MET (2 mg/kg b.w); and group IV received both MET and EO. The rats were administered the respective doses orally by gavage for 28 days. SWM was assessed using Y-maze on the day before the first treatment and day 28 after the last dose. They were sacrificed by decapitation and their brains were taken for assessing oxidative stress parameters and histopathological analysis. RESULTS MET treatment caused SWM deficits. Furthermore, drastic changes were observed in aspartate transaminase, alanine aminotransferase, and alkaline phosphatase activities. The level of malondialdehyde significantly increased, whereas antioxidant (glutathioneS-transferase and catalase) enzyme activities significantly decreased. The CA1 region of the hippocampus of rats exposed to MET revealed severe histological alterations. However, supplementation with EO improved SWM and partially restored the activities of antioxidant systems and prevented neuronal cell damage. CONCLUSION P. graveolens EO has the potential in mitigating most of the adverse effects in the hippocampus and prevents SWM impairment induced by MET toxicity.
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Affiliation(s)
| | - Chabane Kahina
- Laboratory of Animal Physiology and Cell Signaling, ENS Kouba, Algiers, Algeria
| | - Habchi Nawel
- Laboratory of Animal Physiology and Cell Signaling, ENS Kouba, Algiers, Algeria
| | - Zaida Faiza
- Laboratory of Animal Physiology and Cell Signaling, ENS Kouba, Algiers, Algeria
| | - Giaimis Jean
- UMR Qualisud-Faculty of Pharmacy, University of Montpellier, Montpellier, France
| | - Toumi Mohamed
- Laboratory of Ethnobotany and Naturel Substances, ENS Kouba, Algiers, Algeria
| | - Mameri Saâdia
- Laboratory of Anatomopathology, Mustapha Bacha Hospital, Algiers, Algeria
| | - Baz Ahsene
- Laboratory of Animal Physiology and Cell Signaling, ENS Kouba, Algiers, Algeria
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Chelly S, Chelly M, Salah HB, Athmouni K, Bitto A, Sellami H, Kallel C, Bouaziz-Ketata H. HPLC-DAD Analysis, Antioxidant and Protective Effects of Tunisian Rhanterium suaveolens against Acetamiprid Induced Oxidative Stress on Mice Erythrocytes. Chem Biodivers 2019; 16:e1900428. [PMID: 31637808 DOI: 10.1002/cbdv.201900428] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/21/2019] [Indexed: 01/03/2023]
Abstract
The present study was performed to assess the HPLC-DAD analysis as well as antioxidant and protective effects of Tunisian Rhanterium suaveolens (Rs) against acetamiprid (ACT) induced oxidative stress on mice erythrocytes. The in vitro assays showed that the methanolic extract of Rs has an impressive antioxidant effect proved by testing the total antioxidant and scavenging activities using BCB, DPPH and ABTS assays, respectively. Moreover, qualitative and quantitative analysis using HPLC-DAD revealed the richness of Rs in polyphenols where p-Coumaric, Apigenin-7-glucoside and Ferulic acid were detected as the most abundant polyphenols. In the in vivo experiment, ACT, used as a toxicity model, was given to mice at a dose of 20 mg/kg. The latter was the origin of hemolytic anemia characterized by a significant decrease in red blood cells, hemoglobin and hematocrit levels and an increase in bilirubin, LDH, osmotic fragility, reticulocytes and white blood cells number. Characteristic erythrocyte morphological alterations were also determined as spherocytosis, schistocytosis and dacryocystitis. The oxidative status of ACT-treated mice was also altered manifested by a significant increase in MDA and GSH levels and a decrease in SOD, CAT and GPx activities. When receiving the Rs methanolic extract at a dose of 300 mg/kg, all the parameters cited above were restored in mice. These remarkable corrections could only confirm the important antioxidant effect and the noticeable protective properties that possess Rs owing to its broad range of secondary bioactive metabolites.
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Affiliation(s)
- Sabrine Chelly
- Laboratory of Toxicology-Microbiology Environmental and Health, LR17ES06, University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia
| | - Meryam Chelly
- Laboratory of Toxicology-Microbiology Environmental and Health, LR17ES06, University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia
| | - Hichem Ben Salah
- Laboratory of Organic Chemistry, LR17ES08 (Natural Substances Team), University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia
| | - Khaled Athmouni
- Laboratory of Biodiversity and Aquatic Ecosystems Ecology and Planktonology, LR11 ES/72, University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia
| | - Alessandra Bitto
- Department of Clinical and Experimental Medicine, University of Messina, CP 98125, Messina, Italy
| | - Hanen Sellami
- Laboratory of Toxicology-Microbiology Environmental and Health, LR17ES06, University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia.,Laboratory of Treatment and Valorization of Water Rejects, LR15CERTE05, University of Carthage, Water Researches and Technologies Center, BP 273, CP 8020, Tunis, Tunisia
| | - Choumous Kallel
- Hematology Laboratory, LR01ES16, University of Sfax, CHU Habib Bourguiba of Sfax, CP 3029, Sfax, Tunisia
| | - Hanen Bouaziz-Ketata
- Laboratory of Toxicology-Microbiology Environmental and Health, LR17ES06, University of Sfax, Faculty of Sciences of Sfax, BP1171, CP 3000, Sfax, Tunisia
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Chelly M, Chelly S, Ben Salah H, Athmouni K, Bitto A, Sellami H, Kallel C, Allouche N, Gdoura R, Bouaziz-Ketata H. Characterization, antioxidant and protective effects of edible Rumex roseus on erythrocyte oxidative damage induced by methomyl. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00285-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Fountoucidou P, Veskoukis AS, Kerasioti E, Docea AO, Taitzoglou IA, Liesivuori J, Tsatsakis A, Kouretas D. A mixture of routinely encountered xenobiotics induces both redox adaptations and perturbations in blood and tissues of rats after a long-term low-dose exposure regimen: The time and dose issue. Toxicol Lett 2019; 317:24-44. [PMID: 31541690 DOI: 10.1016/j.toxlet.2019.09.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/05/2019] [Accepted: 09/14/2019] [Indexed: 02/08/2023]
Abstract
Exposure of humans to xenobiotic mixtures is a continuous state during their everyday routine. However, the majority of toxicological studies assess the in vivo effects of individual substances rather than mixtures. Therefore, our main objective was to evaluate the impact of the 12- and 18-month exposure of rats to a mixture containing 13 pesticides, food, and life-style additives in three dosage levels (i.e. 0.0025 × NOAEL, 0.01 × NOAEL, and 0.05 × NOAEL), on redox biomarkers in blood and tissues. Our results indicate that the exposure to the mixture induces physiological adaptations by enhancing the blood antioxidant mechanism (i.e., increased glutathione, catalase and total antioxidant capacity and decreased protein carbonyls and TBARS) at 12 months of exposure. On the contrary, exposure to the 0.05 × NOAEL dose for 18 months induces significant perturbations in blood and tissue redox profile (i.e., increased carbonyls and TBARS). This study simulates a scenario of real-life risk exposure to mixtures of xenobiotics through a long-term low-dose administration regimen in rats. The results obtained could support, at least in part, the necessity of introducing testing of combined stimuli at reference doses and long term for the evaluation of the risk from exposure to chemicals.
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Affiliation(s)
- Polyxeni Fountoucidou
- Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500, Larissa, Greece
| | - Aristidis S Veskoukis
- Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500, Larissa, Greece
| | - Efthalia Kerasioti
- Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500, Larissa, Greece
| | - Anca Oana Docea
- Department of Toxicology, University of Medicine and Pharmacy, Faculty of Pharmacy, Craiova, 200349, Romania
| | - Ioannis A Taitzoglou
- School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | | | - Aristidis Tsatsakis
- Center of Toxicology Science & Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Demetrios Kouretas
- Department of Biochemistry and Biotechnology, University of Thessaly, Viopolis, Mezourlo, 41500, Larissa, Greece.
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Sefi M, Elwej A, Chaâbane M, Bejaoui S, Marrekchi R, Jamoussi K, Gouiaa N, Boudawara-Sellemi T, El Cafsi M, Zeghal N, Soudani N. Beneficial role of vanillin, a polyphenolic flavoring agent, on maneb-induced oxidative stress, DNA damage, and liver histological changes in Swiss albino mice. Hum Exp Toxicol 2019; 38:619-631. [PMID: 30782018 DOI: 10.1177/0960327119831067] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Vanillin, a widely used flavoring agent, has antimutagenic and antioxidant properties. The current study was performed to evaluate its beneficial role against hepatotoxicity induced by maneb, a dithiocarbamate fungicide. Mice were divided into four groups of six each: group 1, serving as negative controls which received by intraperitoneal way only distilled water, a solvent of maneb; group 2, received daily, by intraperitoneal way, maneb (30 mg kg-1 body weight (BW)); group 3, received maneb at the same dose of group 2 and 50 mg kg-1 BW of vanillin by intraperitoneal way; and group 4, serving as positive controls, received daily only vanillin. After 10 days of treatment, mice of all groups were killed. Our results showed that vanillin significantly reduced the elevated hepatic levels of malondialdehyde, hydrogen peroxide, and advanced oxidation protein product and attenuated DNA fragmentation induced by maneb. In addition, vanillin modulated the alterations of antioxidant status: enzymatic (superoxide dismutase, catalase, and glutathione peroxidase) and nonenzymatic (reduced glutathione, nonprotein thiol, and vitamin C) antioxidants in the liver of maneb-treated mice. This natural compound was also able to ameliorate plasma biochemical parameters (aspartate aminotransferase, alanine aminotransferase, gamma glutamyl transpeptidase, alkaline phosphatase, total bilirubin, and total protein). The protective effect of vanillin was further evident through the histopathological changes produced by maneb in the liver tissue. Thus, we concluded that vanillin might be beneficial against maneb-induced hepatic damage in mice.
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Affiliation(s)
- M Sefi
- 1 Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia.,2 Physiology and Aquatic Environment Unit, Department of Biological Sciences, University of Tunis El Manar, Tunis, Tunisia
| | - A Elwej
- 1 Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia
| | - M Chaâbane
- 1 Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia
| | - S Bejaoui
- 2 Physiology and Aquatic Environment Unit, Department of Biological Sciences, University of Tunis El Manar, Tunis, Tunisia
| | - R Marrekchi
- 3 Biochemistry Laboratory, Department of Biochemistry, CHU Hedi Chaker, University of Sfax, Sfax, Tunisia
| | - K Jamoussi
- 3 Biochemistry Laboratory, Department of Biochemistry, CHU Hedi Chaker, University of Sfax, Sfax, Tunisia
| | - N Gouiaa
- 4 Histopathology Laboratory, Department of Anatomopathology, CHU Habib Bourguiba, University of Sfax, Sfax, Tunisia
| | - T Boudawara-Sellemi
- 4 Histopathology Laboratory, Department of Anatomopathology, CHU Habib Bourguiba, University of Sfax, Sfax, Tunisia
| | - M El Cafsi
- 2 Physiology and Aquatic Environment Unit, Department of Biological Sciences, University of Tunis El Manar, Tunis, Tunisia
| | - N Zeghal
- 1 Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia
| | - N Soudani
- 1 Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sfax, Tunisia.,2 Physiology and Aquatic Environment Unit, Department of Biological Sciences, University of Tunis El Manar, Tunis, Tunisia
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Trachantong W, Saenphet S, Saenphet K, Chaiyapo M. Lethal and sublethal effects of a methomyl-based insecticide in Hoplobatrachus rugulosus. J Toxicol Pathol 2016; 30:15-24. [PMID: 28190921 PMCID: PMC5293688 DOI: 10.1293/tox.2016-0039] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/05/2016] [Indexed: 01/21/2023] Open
Abstract
The aim of this study was to investigate the lethal and sublethal toxicity of a methomyl-based insecticide in Hoplobatrachus rugulosus, as methomyl-based insecticides are applied in massive amounts and agrochemicals have effects on the decline in amphibian populations. To evaluate the toxic effects of methomyl from agricultural application, a methomyl-based insecticide containing 40% methomyl was selected. The median lethal concentration of 96 hours of methomyl exposure was 8.69 ppm for H. rugulosus tadpoles. The lethal concentration also produced severe histological damage in the livers and kidneys of the exposed tadpoles. The sublethal concentration used for methomyl was 144 ppb during the metamorphosis period. It was found that the sublethal concentration of the methomyl compound could decrease growth, metamorphosis time, and size, disturb biochemical parameters, and produce histological damage. In livers, methomyl effects increased oxidative stress and dramatically decreased the glycogen level of the treated froglets. Mononuclear infiltration, blood congestion, amorphous substances, and hepatocytes vacuolization were observed throughout liver tissue. The methomyl-based insecticide also increased oxidative stress and decreased nitric oxide levels in the kidneys of the exposed froglets. Renal tissue damage including blood congestion, amorphous substances, and Bowman’s capsule spaces reduction were found in the methomyl exposure group. The methomyl compound also produced vacuoles in various stages of oocytes, but no histological damage was found in testicular tissue. Our results indicated strong toxic effects of the methomyl-based insecticide on H. rugulosus, a broadly tolerant anuran.
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Affiliation(s)
- Waret Trachantong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Supap Saenphet
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Kanokporn Saenphet
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Monruedee Chaiyapo
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
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