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Chen J, Akhtar M, Hardej D. Exposure to dithiocarbamate fungicide Ziram results in hepatic and renal toxicity in Long Evan rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104116. [PMID: 37011740 DOI: 10.1016/j.etap.2023.104116] [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: 12/05/2022] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Ziram is a dimethyldithiocarbamate fungicide that is complexed to the metal zinc. The focus of this study is to examine the effects of dimethyldithiocarbamate exposure on metal homeostasis, glutathione levels, and the physiological parameters of the kidney and liver in Long-Evan rats. Our results indicate significant accumulation of copper or zinc, and changes in total GSH or GSH/GSSG ratio in the liver and kidneys of animals treated with Ziram only. Histopathological examination of liver and kidney sections indicate the presence of infiltrates in the liver of animals treated with Ziram only, whereas protein aggregates, sloughing of cells and increased KIM-1 positive cells, an indicator of tubule deterioration, are seen in the kidneys of animals treated with Ziram and sodium-dimethyldithiocarbamate, the salt form of the dimethyldithiocarbmate backbone. These findings suggest that the overall toxicological effect of Ziram is mediated by an intrinsic property rather than to dimethyldithiocarbamate backbone or metal moiety.
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Affiliation(s)
- Jeffrey Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY 11439, USA
| | - Mumtaz Akhtar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY 11439, USA
| | - Diane Hardej
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Jamaica, NY 11439, USA.
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Neuroprotective effects of melatonin against neurotoxicity induced by intranasal sodium dimethyldithiocarbamate administration in mice. Neurotoxicology 2020; 80:144-154. [PMID: 32738267 DOI: 10.1016/j.neuro.2020.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/30/2020] [Accepted: 07/22/2020] [Indexed: 12/14/2022]
Abstract
Exposure to fungicide ziram (zinc dimethyldithiocarbamate) has been associated with increased incidence of Parkinson's disease (PD). We recently demonstrated that the intranasal (i.n.) administration of sodium dimethyldithiocarbamate (NaDMDC, a more soluble salt than ziram) induces PD-like behavioral and neurochemical alterations in mice. We now investigated the putative neuroprotective effects of melatonin on behavioral dificits and neurochemical alterations induced by i.n. NaDMDC. Melatonin treatment (3, 10 or 30 mg/kg, i.p.) was given 1 h before NaDMDC administration (1 mg/nostril) during 4 consecutive days and we evaluated early (up to 7 days) and late (up to 35 days) NaDMDC-induced behavioral and neurochemical alterations. Melatonin treatment protected against early motor and general neurological impairments observed in the open field and neurological score of severity, respectively, and late deficits in rotarod test. Melatonin prevented the NaDMDC-induced alterations in the striatal tyrosine hydroxylase immunocontent. Melatonin also protected against increased levels of oxidative stress markers (4-hydroxynonenal and 3-nitrotyrosine) in the striatum, as well as the NaDMDC-induced increase of 4-hydroxynonenal and TNF, markers of oxidative stress and inflammation, respectively, in the olfactory bulb. These results further detail the mechanisms underlying NaDMDC toxicity and demonstrate the neuroprotective effects of melatonin against the neuronal damage induced by NaDMDC.
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Comparative study of the effects of ziram and disulfiram on human monocyte-derived macrophage functions and polarization: involvement of zinc. Cell Biol Toxicol 2020; 37:379-400. [PMID: 32712770 DOI: 10.1007/s10565-020-09540-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 06/03/2020] [Indexed: 10/23/2022]
Abstract
Ziram, a zinc dithiocarbamate is widely used worldwide as a fungicide in agriculture. In order to investigate ziram-induced changes in macrophage functions and polarization, human monocytes-derived macrophages in culture were treated with ziram at 0.01-10 μmol.L-1 for 4-24 h. To characterize zinc involvement in these changes, we also determined the effects of disulfiram alone (dithiocarbamate without zinc) or in co-incubation with ZnSO4. We have shown that ziram and disulfiram at 0.01 μmol.L-1 increased zymosan phagocytosis. In contrast, ziram at 10 μmol.L-1 completely inhibited this phagocytic process, the oxidative burst triggered by zymosan and the production of TNF-α, IL-1β, IL-6, and CCL2 triggered by LPS. Disulfiram had the same effects on these macrophages functions only when combined with zinc (10 μmol.L-1). In contrast, at 10 μmol.L-1 ziram and zinc associated-disulfiram induced expression of several antioxidants genes HMOX1, SOD2, and catalase, which could suggest the induction of oxidative stress. This oxidative stress could be involved in the increase in late apoptosis induced by ziram (10 μmol.L-1) and zinc associated-disulfiram. Concerning gene expression profiles of membrane markers of macrophage polarization, ziram at 10 μmol.L-1 had two opposite effects. It inhibited the gene expression of M2 markers (CD36, CD163) in the same way as the disulfiram-zinc co-treatment. Conversely, ziram induced gene expression of other M2 markers CD209, CD11b, and CD16 in the same way as treatment with zinc alone. Disulfiram-zinc association had no significant effects on these markers. These results taken together show that ziram via zinc modulates macrophages to M2-like anti-inflammatory phenotype which is often associated with various diseases.
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The environmental toxicant ziram enhances neurotransmitter release and increases neuronal excitability via the EAG family of potassium channels. Neurobiol Dis 2020; 143:104977. [PMID: 32553709 DOI: 10.1016/j.nbd.2020.104977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 12/21/2022] Open
Abstract
Environmental toxicants have the potential to contribute to the pathophysiology of multiple complex diseases, but the underlying mechanisms remain obscure. One such toxicant is the widely used fungicide ziram, a dithiocarbamate known to have neurotoxic effects and to increase the risk of Parkinson's disease. We have used Drosophila melanogaster as an unbiased discovery tool to identify novel molecular pathways by which ziram may disrupt neuronal function. Consistent with previous results in mammalian cells, we find that ziram increases the probability of synaptic vesicle release by dysregulation of the ubiquitin signaling system. In addition, we find that ziram increases neuronal excitability. Using a combination of live imaging and electrophysiology, we find that ziram increases excitability in both aminergic and glutamatergic neurons. This increased excitability is phenocopied and occluded by null mutant animals of the ether a-go-go (eag) potassium channel. A pharmacological inhibitor of the temperature sensitive hERG (human ether-a-go-go related gene) phenocopies the excitability effects of ziram but only at elevated temperatures. seizure (sei), a fly ortholog of hERG, is thus another candidate target of ziram. Taken together, the eag family of potassium channels emerges as a candidate for mediating some of the toxic effects of ziram. We propose that ziram may contribute to the risk of complex human diseases by blockade of human eag and sei orthologs, such as hERG.
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Wang Y, Zhang H, Wu X, Xue C, Hu Y, Khan A, Liu F, Cai L. Ecotoxicity assessment of sodium dimethyldithiocarbamate and its micro-sized metal chelates in Caenorhabditis elegans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 720:137666. [PMID: 32325596 DOI: 10.1016/j.scitotenv.2020.137666] [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: 12/12/2019] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 06/11/2023]
Abstract
Sodium dimethyldithiocarbamate (SDDC) is a widely used heavy metal chelating agent in harmless treatment of wastewater and hazardous waste, but SDDC and its heavy metal chelates may leak into the environment and bring potential ecological risks. In this study, the model organism Caenorhabditis elegans was used to evaluate the toxic effect of SDDC and its heavy metal Cu, Pb chelates. Multiple endpoints were investigated by subacute exposure to SDDC (0.01-100 mg/L) and micro-sized Cu, Pb chelates of SDDC (1-100 mg/L). Our data indicated that the LC50 value of SDDC was 139.39 mg/L (95% Cl: 111.03, 174.75 mg/L). In addition, SDDC was found that concentration of 1 mg/L is a safe limit value for nematode C. elegans, and concentration above 1 mg/L caused adverse effects on the survival, growth, locomotion behaviors and reactive oxygen species (ROS) production of exposed nematodes. Furthermore, all tested SDDC-Cu and SDDC-Pb chelates had obviously lower toxic effect than untreated Cu, Pb metals. These two chelates also had a lower toxic effect than SDDC agent due to its more stable structure. Moreover, SDDC-Cu had a higher toxic effect than SDDC-Pb at the same concentration. Thus, our results suggest that SDDC as a kind of chelating agent applied in harmless treatment of heavy metals, the safe addition limit should not be exceeded.
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Affiliation(s)
- Yitian Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Han Zhang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiangyu Wu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Xue
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yang Hu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Asim Khan
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Fuwen Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Lankun Cai
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
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Mirzayanov II, Garifzyanov AR, Islamov DR, Shtyrlin VG. Synthesis and Crystal Structure of Dipotassium Salts of N-Alkyl-N-{[O-alkoxy(hydroxy)phosphoryl]methyl}ditiocarbamic Acids. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220030081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Piel C, Pouchieu C, Carles C, Béziat B, Boulanger M, Bureau M, Busson A, Grüber A, Lecluse Y, Migault L, Renier M, Rondeau V, Schwall X, Tual S, Pierre L, Baldi I. Agricultural exposures to carbamate herbicides and fungicides and central nervous system tumour incidence in the cohort AGRICAN. ENVIRONMENT INTERNATIONAL 2019; 130:104876. [PMID: 31344646 DOI: 10.1016/j.envint.2019.05.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 05/27/2019] [Accepted: 05/27/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Pesticides exposures could be implicated in the excess of Central Nervous System (CNS) tumors observed in farmers, but evidence concerning individual pesticides remains limited. Carbamate derivative pesticides, including herbicides and fungicides (i.e. (thio/dithio)-carbamates), have shown evidence of carcinogenicity in experimental studies in animals. In the French AGRICAN cohort, we assessed the associations between potential exposures to carbamate herbicides and fungicides and the incidence of CNS tumors, overall and by histological subtype. METHODS AGRICAN enrolled 181,842 participants involved in agriculture. Incident CNS tumors were identified by linkage with cancer registries from enrollment (2005-2007) until 2013. Individual exposures were assessed by combining information on lifetime periods of pesticide use on crops and the French crop-exposure matrix PESTIMAT, for each of the 14 carbamate and thiocarbamate herbicides and the 16 carbamate and dithiocarbamate fungicides registered in France since 1950. Associations were estimated using proportional hazard models with age as the underlying timescale, adjusting for gender, educational level and smoking. RESULTS During an average follow-up of 6.9 years, 381 incident cases of CNS tumors occurred, including 164 gliomas and 134 meningiomas. Analyses showed increased risks of CNS tumors with overall exposure to carbamate fungicides (Hazard Ratio, HR = 1.88; 95% CI: 1.27-2.79) and, to a lesser extent, to carbamate herbicides (HR = 1.44; 95% CI: 0.94-2.22). Positive associations were observed with specific carbamates, including some fungicides (mancozeb, maneb, metiram) and herbicides (chlorpropham, propham, diallate) already suspected of being carcinogens in humans. CONCLUSIONS Although some associations need to be corroborate in further studies and should be interpreted cautiously, these findings provide additional carcinogenicity evidence for several carbamate fungicides and herbicides.
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Affiliation(s)
- Clément Piel
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Camille Pouchieu
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France; Registre des tumeurs primitives du système nerveux central de la Gironde, ISPED, Centre INSERM U1219, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Camille Carles
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France; CHU de Bordeaux, Service de Médecine du Travail et Pathologies Professionnelles, Bordeaux, France
| | - Béatrix Béziat
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Mathilde Boulanger
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Mathilde Bureau
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Amandine Busson
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Anne Grüber
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France; Registre des tumeurs primitives du système nerveux central de la Gironde, ISPED, Centre INSERM U1219, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Yannick Lecluse
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Lucile Migault
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Marine Renier
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Virginie Rondeau
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Xavier Schwall
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
| | - Séverine Tual
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Lebailly Pierre
- INSERM, U1086 Anticipe Axe Cancers et Préventions, Caen, France; Université de Caen Normandie, Caen, France; Centre de Lutte Contre le Cancer François Baclesse, Caen, France
| | - Isabelle Baldi
- EPICENE team, ISPED, U1219 INSERM, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France; Registre des tumeurs primitives du système nerveux central de la Gironde, ISPED, Centre INSERM U1219, Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France; CHU de Bordeaux, Service de Médecine du Travail et Pathologies Professionnelles, Bordeaux, France.
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Namazbaeva Z, Battakova S, Ibrayeva L, Sabirov Z. Change in metabolic and cognitive state among people of the Aral zone of ecological disaster. Isr J Ecol Evol 2018. [DOI: 10.1163/22244662-20181035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Risk factors in Aral Sea region include toxic metals that competitively interact with essential elements influencing their metabolism, affecting metabolic and cognitive functions. According to epidemiological data, cerebrovascular disease and thyroid function abnormality are the leading disorders. Cognitive and metabolic disorders are considered as risk factors in cerebrovascular diseases. Thus, the objective of current work was to determine the metabolic and cognitive state of people in Aralsk, associated with an imbalance of essential trace elements and find correlation between toxic metals load and psychoemotional status. 275 people between the ages of 21 and 45 years were involved. In evaluating cognitive state, a decrease in short-term memory for numbers and an increase in depression among subjects was found. An inverse correlation between the copper level in blood and short-term memory for numbers, between depression and iodine level in blood, between the zinc level in blood and the “attentional capacity” was also found. The results showed a significant metabolic stress among subjects during adaptation to a high chemical load. Data represent a cross-sectional age-dependent review of metabolic and cognitive processes and microelement metabolism among population, living in the Aral Sea region for a long time.
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Affiliation(s)
- Zulkiya Namazbaeva
- a Republican State Governmental Enterprise with the right of commercial activity “National Centre of Labour Hygiene and Occupational Diseases”, Ministry of Healthcare of the Republic of Kazakhstan, Karaganda, Kazakhstan
| | - Sharbanu Battakova
- a Republican State Governmental Enterprise with the right of commercial activity “National Centre of Labour Hygiene and Occupational Diseases”, Ministry of Healthcare of the Republic of Kazakhstan, Karaganda, Kazakhstan
| | - Lyazat Ibrayeva
- a Republican State Governmental Enterprise with the right of commercial activity “National Centre of Labour Hygiene and Occupational Diseases”, Ministry of Healthcare of the Republic of Kazakhstan, Karaganda, Kazakhstan
- b Republican State Governmental Enterprise with the right of commercial activity, Karaganda State Medical University, Ministry of Healthcare of the Republic of Kazakhstan, Karaganda, Kazakhstan
| | - Zhanbol Sabirov
- a Republican State Governmental Enterprise with the right of commercial activity “National Centre of Labour Hygiene and Occupational Diseases”, Ministry of Healthcare of the Republic of Kazakhstan, Karaganda, Kazakhstan
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Ahmadi R, Hemmateenejad B, Safavi A, Shojaeifard Z, Mohabbati M, Firuzi O. Assessment of cytotoxicity of choline chloride-based natural deep eutectic solvents against human HEK-293 cells: A QSAR analysis. CHEMOSPHERE 2018; 209:831-838. [PMID: 30114731 DOI: 10.1016/j.chemosphere.2018.06.103] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/13/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
Deep eutectic solvents (DESs) are a new generation of solvents. To consider them as green solvents, investigation of their toxicity is essential. In this work, the cytotoxicity of a number of natural deep eutectic solvents (NADESs) against HEK-293 human embryonic kidney cells was evaluated by MTT assay. The NADESs were prepared with choline chloride (ChCl) as hydrogen-bond acceptor (HBA) and different sugar alcohols as hydrogen-bond donor (HBD) constituents. They showed IC50 values in the range of 3.52-75.46 mM. These results were used to evaluate the effect of structural parameters on the cytotoxicity of the studied NADESs by using quantitative structure activity relationship (QSAR) analysis. A three-parameter linear model was obtained between - log(IC50) as a dependent variable and structural descriptors as independent variables. Rotatable bond number (RBN), mean atomic van der Waals volume (Mv) and the interaction of second power carbon numbers with the molar ratio of HBA to HBD in each NADES (C2 Ratio), were three major parameters. The statistical model covered about 76.4% and 69.8% variance of data in training and leave-one-out cross-validation, respectively. This work, as the first study on the QSAR analysis of DESs, can provide a good perspective for designing greener novel DESs.
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Affiliation(s)
- Raheleh Ahmadi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran
| | - Bahram Hemmateenejad
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran; Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Afsaneh Safavi
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran.
| | - Zahra Shojaeifard
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran
| | - Maryam Mohabbati
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omidreza Firuzi
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Mack JM, Moura TM, Lanznaster D, Bobinski F, Massari CM, Sampaio TB, Schmitz AE, Souza LF, Walz R, Tasca CI, Poli A, Doty RL, Dafre AL, Prediger RD. Intranasal administration of sodium dimethyldithiocarbamate induces motor deficits and dopaminergic dysfunction in mice. Neurotoxicology 2018; 66:107-120. [PMID: 29605442 DOI: 10.1016/j.neuro.2018.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 03/27/2018] [Accepted: 03/28/2018] [Indexed: 01/26/2023]
Abstract
The primary etiology of Parkinson's disease (PD) remains unclear, but likely reflects a combination of genetic and environmental factors. Exposure to some pesticides, including ziram (zinc dimethyldithiocarbamate), is a relevant risk factor for PD. Like some other environmental neurotoxicants, we hypothesized that ziram can enter the central nervous system from the nasal mucosa via the olfactory nerves. To address this issue, we evaluated the effects of 1, 2 or 4 days of intranasal (i.n., 1 mg/nostril/day) infusions of sodium dimethyldithiocarbamate (NaDMDC), a dimethyldithiocarbamate more soluble than ziram, on locomotor activity in the open field, neurological severity score and rotarod performance. We also addressed the effects of four daily i.n. NaDMDC infusions on olfactory bulb (OB) and striatal measures of cell death, reactive oxygen species (ROS), tyrosine hydroxylase, and the levels of dopamine, noradrenaline, serotonin, and their metabolites. A single i.n. administration of NaDMDC did not significantly alter the behavioral measures. Two consecutive days of i.n. NaDMDC administrations led to a transient neurological deficit that spontaneously resolved within a week. However, the i.n. infusions of NaDMDC for 4 consecutive days induced motor and neurological deficits for up to 7 days after the last NaDMDC administration and increased striatal TH immunocontent and dopamine degradation within a day of the last infusion. Pharmacological treatment with the anti-parkinsonian drugs l-DOPA and apomorphine improved the NaDMDC-induced locomotor deficits. NaDMDC increased serotonin levels and noradrenaline metabolism in the OB 24 h after the last NaDMDC infusion, ROS levels in the OB 2 h after the last infusion, and striatum 2 and 24 h after the last infusion. These results demonstrate, for the first time, that i.n. NaDMDC administration induces neurobehavioral and neurochemical impairments in mice. This accords with evidence that dimethyldithio-carbamate exposure increases the risk of PD and highlights the possibility that olfactory system could be a major route for NaDMDC entry to central nervous system.
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Affiliation(s)
- Josiel M Mack
- Department of Pharmacology, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Tainara M Moura
- Department of Pharmacology, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Débora Lanznaster
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Franciane Bobinski
- Experimental Neuroscience Laboratory (LANEX), Graduate Program in Health Sciences, University of Southern of Santa Catarina (UNISUL), Palhoça, SC, Brazil
| | - Caio M Massari
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Tuane B Sampaio
- Department of Pharmacology, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Ariana E Schmitz
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Luiz F Souza
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Roger Walz
- Department of Clinical Medical, Center of Health Sciences, University Hospital, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - Carla I Tasca
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Anicleto Poli
- Department of Pharmacology, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Richard L Doty
- Smell & Taste Center, Department of Otorhinolaryngology: Head and Neck Surgery, Perelman School of Medicine, Philadelphia, PA 19104 USA
| | - Alcir L Dafre
- Department of Biochemistry, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Rui D Prediger
- Department of Pharmacology, Centre of Biological Sciences, Federal University of Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil.
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