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Salm DC, Horewicz VV, Tanaka F, Ferreira JK, de Oliveira BH, Maio JMB, Donatello NN, Ludtke DD, Mazzardo-Martins L, Dutra AR, Mack JM, de C H Kunzler D, Cargnin-Ferreira E, Salgado ASI, Bittencourt EB, Bianco G, Piovezan AP, Bobinski F, Moré AOO, Martins DF. Electrical Stimulation of the Auricular Branch Vagus Nerve Using Random and Alternating Frequencies Triggers a Rapid Onset and Pronounced Antihyperalgesia via Peripheral Annexin A1-Formyl Peptide Receptor 2/ALX Pathway in a Mouse Model of Persistent Inflammatory Pain. Mol Neurobiol 2023; 60:2889-2909. [PMID: 36745336 DOI: 10.1007/s12035-023-03237-7] [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: 04/29/2022] [Accepted: 01/13/2023] [Indexed: 02/07/2023]
Abstract
This study evaluated the antihyperalgesic and anti-inflammatory effects of percutaneous vagus nerve electrical stimulation (pVNS) by comparing the effects of alternating and random frequencies in an animal model of persistent inflammatory hyperalgesia. The model was induced by Freund's complete adjuvant (CFA) intraplantar (i.pl.) injection. Mice were treated with different protocols of time (10, 20, or 30 min), ear laterality (right, left or both), and frequency (alternating or random). Mechanical hyperalgesia was evaluated, and some groups received i.pl. WRW4 (FPR2/ALX antagonist) to determine the involvement. Edema, paw surface temperature, and spontaneous locomotor activity were evaluated. Interleukin-1β, IL-6, IL-10, and IL4 levels were verified by enzyme-linked immunosorbent assay. AnxA1, FPR2/ALX, neutrophil, M1 and M2 phenotype macrophage, and apoptotic cells markers were identified using western blotting. The antihyperalgesic effect pVNS with alternating and random frequency effect is depending on the type of frequency, time, and ear treated. The pVNS random frequency in the left ear for 10 min had a longer lasting antihyperalgesic effect, superior to classical stimulation using alternating frequency and the FPR2/ALX receptor was involved in this effect. There was a reduction in the levels of pro-inflammatory cytokines and an increase in the immunocontent of AnxA1 and CD86 in mice paw. pVNS with a random frequency in the left ear for 10 min showed to be optimal for inducing an antihyperalgesic effect. Thus, the random frequency was more effective than the alternating frequency. Therefore, pVNS may be an important adjunctive treatment for persistent inflammatory pain.
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Affiliation(s)
- Daiana C Salm
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Verônica V Horewicz
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Fernanda Tanaka
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Neuroscience, Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Júlia K Ferreira
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Bruna H de Oliveira
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Julia Maria Batista Maio
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Nathalia N Donatello
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Daniela D Ludtke
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Leidiane Mazzardo-Martins
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Neuroscience, Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Aline R Dutra
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Josiel M Mack
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Deborah de C H Kunzler
- Department of Physiotherapy, State University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | | | | | - Gianluca Bianco
- Research Laboratory of Posturology and Neuromodulation RELPON, Department of Human Neuroscience, Sapienza University, Rome, Italy
- Istituto Di Formazione in Agopuntura E Neuromodulazione IFAN, Rome, Italy
| | - Anna Paula Piovezan
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Franciane Bobinski
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
| | - Ari O O Moré
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil
- Integrative Medicine and Acupuncture Division, University Hospital, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Daniel F Martins
- Experimental Neuroscience Laboratory (LaNEx), University of South Santa Catarina, Palhoça, Santa Catarina, Brazil.
- Postgraduate Program in Health Sciences, University of South Santa Catarina, Palhoça, Santa Catarina, Brazil.
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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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3
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Somensi N, Lopes SC, Gasparotto J, Mayer Gonçalves R, Tiefensee-Ribeiro C, Oppermann Peixoto D, Ozorio Brum P, Pinho CM, Agnes JP, Santos L, de Oliveira J, Spiller F, Fonseca Moreira JC, Zanotto-Filho A, Prediger RD, Pens Gelain D. Role of toll-like receptor 4 and sex in 6-hydroxydopamine-induced behavioral impairments and neurodegeneration in mice. Neurochem Int 2021; 151:105215. [PMID: 34710535 DOI: 10.1016/j.neuint.2021.105215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/02/2021] [Accepted: 10/21/2021] [Indexed: 11/19/2022]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by progressive loss of the nigrostriatal dopaminergic neurons that are associated with motor alterations and non-motor manifestations (such as depression). Neuroinflammation is a process with a critical role in the pathogenesis of PD. In this regard, toll-like receptor 4 (TLR4) is a central mediator of immune response in PD. Moreover, there are gender-related differences in the incidence, prevalence, and clinical features of PD. Therefore, we aimed to elucidate the role of TLR4 in the sex-dependent response to dopaminergic denervation induced by 6-hydroxydopamine (6-OHDA) in mice. Female and male adult wildtype (WT) and TLR4 knockout (TLR4-/-) mice were administered with unilateral injection of 6-OHDA in the dorsal striatum, and non-motor and motor impairments were evaluated for 30 days, followed by biochemistry analysis in the substantia nigra pars compacta (SNc), dorsal striatum, and dorsoventral cortex. Early non-motor impairments (i.e., depressive-like behavior and spatial learning deficits) induced by 6-OHDA were observed in the male WT mice but not in male TLR4-/- or female mice. Motor alterations were observed after administration of 6-OHDA in both strains, and the lack of TLR4 was also related to motor commitment. Moreover, ablation of TLR4 prevented 6-OHDA-induced dopaminergic denervation and microgliosis in the SNc, selectively in female mice. These results reinforced the existence of sex-biased alterations in PD and indicated TLR4 as a promising therapeutic target for the motor and non-motor symptoms of PD, which will help counteract the neuroinflammatory and neurodegenerative processes.
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Affiliation(s)
- Nauana Somensi
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Samantha Cristiane Lopes
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Juciano Gasparotto
- Instituto de Ciências Biomédicas - Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700. CEP: 37130-001. Centro - Alfenas/MG, Alfenas, Minas Gerais, Brazil
| | - Rosângela Mayer Gonçalves
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Camila Tiefensee-Ribeiro
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Daniel Oppermann Peixoto
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Pedro Ozorio Brum
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Cibele Martins Pinho
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Jonathan Paulo Agnes
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Lucas Santos
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jade de Oliveira
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Fernando Spiller
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - José Cláudio Fonseca Moreira
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Alfeu Zanotto-Filho
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Rui Daniel Prediger
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Campus Universitário, Florianópolis, SC, Brazil
| | - Daniel Pens Gelain
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Sarrouilhe D, Defamie N, Mesnil M. Is the Exposome Involved in Brain Disorders through the Serotoninergic System? Biomedicines 2021; 9:1351. [PMID: 34680468 PMCID: PMC8533279 DOI: 10.3390/biomedicines9101351] [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: 07/22/2021] [Revised: 09/17/2021] [Accepted: 09/23/2021] [Indexed: 11/24/2022] Open
Abstract
Serotonin (5-hydroxytryptamine, 5-HT) is a biogenic monoamine acting as a neurotransmitter in the central nervous system (CNS), local mediator in the gut, and vasoactive agent in the blood. It has been linked to a variety of CNS functions and is implicated in many CNS and psychiatric disorders. The high comorbidity between some neuropathies can be partially understood by the fact that these diseases share a common etiology involving the serotoninergic system. In addition to its well-known functions, serotonin has been shown to be a mitogenic factor for a wide range of normal and tumor cells, including glioma cells, in vitro. The developing CNS of fetus and newborn is particularly susceptible to the deleterious effects of neurotoxic substances in our environment, and perinatal exposure could result in the later development of diseases, a hypothesis known as the developmental origin of health and disease. Some of these substances affect the serotoninergic system and could therefore be the source of a silent pandemic of neurodevelopmental toxicity. This review presents the available data that are contributing to the appreciation of the effects of the exposome on the serotoninergic system and their potential link with brain pathologies (neurodevelopmental, neurodegenerative, neurobehavioral disorders, and glioblastoma).
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Affiliation(s)
- Denis Sarrouilhe
- Laboratoire de Physiologie Humaine, Faculté de Médecine et Pharmacie, 6 Rue de la Milétrie, Bât D1, TSA 51115, CEDEX 09, 86073 Poitiers, France
| | - Norah Defamie
- Laboratoire STIM, ERL7003 CNRS-Université de Poitiers, 1 Rue G. Bonnet–TSA 51106, CEDEX 09, 86073 Poitiers, France; (N.D.); (M.M.)
| | - Marc Mesnil
- Laboratoire STIM, ERL7003 CNRS-Université de Poitiers, 1 Rue G. Bonnet–TSA 51106, CEDEX 09, 86073 Poitiers, France; (N.D.); (M.M.)
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5
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Ueda RMR, de Souza VM, Magalhães LR, Chagas PHN, Veras ASC, Teixeira GR, Nai GA. Neurotoxicity associated with chronic exposure to dichlorophenoxyacetic acid (2,4-D) - a simulation of environmental exposure in adult rats. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2021; 56:695-705. [PMID: 34125002 DOI: 10.1080/03601234.2021.1939622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is the second most widely used herbicide in the world. The objective of this study was to evaluate the neurotoxic effects and the possible role of the dysregulation of apoptosis in the genesis of brain damage in chronic exposure to 2,4-D in rats. Eighty adult male rats were distributed into eight groups (n = 10) and exposed orally (contaminated feed) and via inhalation, with two groups exposed to distilled water (control) and six to 2,4-D in three distinct concentrations. They were exposed for 6 months. A neurobehavioral assessment was performed, and the brain was collected for histopathology and immunohistochemistry. The animals in the control groups showed greater motility in the open-field test and a greater number of entries in the elevated-plus-maze test than those exposed to 2,4-D (p < 0.05). Neuronal necrosis was more incident in animals exposed to 2,4-D (p < 0.05). There was a negative correlation between the expression of BAX and the measurement of the cerebral cortex thickness (r = -0.713; p = 0.047). Regardless of the route of exposure, 2,4-D led to a deficit in neurobehavioral tests and decreased thickness of the cerebral cortex associated with increased expression of the pro-apoptotic protein BAX.
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Affiliation(s)
- Rose Meire R Ueda
- Faculty of Psychology, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
| | - Verena M de Souza
- Faculty of Medicine, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
| | - Letícia R Magalhães
- Faculty of Medicine, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
| | - Pedro Henrique N Chagas
- Faculty of Medicine, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
| | - Allice S C Veras
- Department of Physical Education, Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Presidente Prudente, São Paulo, Brazil
| | - Giovana R Teixeira
- Department of Physical Education, Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Presidente Prudente, São Paulo, Brazil
| | - Gisele A Nai
- Department of Pathology and Graduate Program in Animal Science, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente, São Paulo, Brazil
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6
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Cui H, Wang W, Zheng X, Xia D, Liu H, Qin C, Tian H, Teng J. Decreased AQP4 Expression Aggravates ɑ-Synuclein Pathology in Parkinson's Disease Mice, Possibly via Impaired Glymphatic Clearance. J Mol Neurosci 2021; 71:2500-2513. [PMID: 33772424 DOI: 10.1007/s12031-021-01836-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/19/2021] [Indexed: 12/13/2022]
Abstract
The pathological hallmarks of Parkinson's disease (PD), a neurodegenerative disorder, are the selective loss of dopamine neurons in the substantia nigra pars compacta (SNpc) and the presence of α-synuclein (α-syn) aggregates in the form of Lewy bodies/Lewy neurites (LBs/LNs) in neurons. Recent studies have indicated that aquaporin 4 (AQP4), as a predominant water channel protein in the brain, is involved in the progression of Parkinson's disease (PD). However, it remains unclear whether AQP4 expression affects α-syn pathology in Parkinson's disease. In this study, we established a progressive PD model by subjecting AQP4 null (AQP4+/-) mice to bilateral intrastriatal injection of α-syn preformed fibrils (PFFs) and investigated the effect of decreased AQP4 expression on the development of PD. We found that decreased expression of AQP4 accelerated pathologic deposition of α-syn and facilitated the loss of dopamine neurons and behavioral disorders. Draining of macromolecules from the brain via the glymphatic pathway was slowed due to decreased AQP4 expression. Taken together, these findings indicate that decreased AQP4 expression may aggravate PD-like pathology, possibly via impairment of the glymphatic pathway.
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Affiliation(s)
- Huili Cui
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Wenkang Wang
- Department of Orthopedics, Graduate School of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Xinhui Zheng
- Department of Orthopedics, Graduate School of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Danhao Xia
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Han Liu
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Chi Qin
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Haiyan Tian
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Junfang Teng
- Department of Neurology, Institute of Parkinson and Movement Disorder, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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7
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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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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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9
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Chen Y, Sun X, Wang X, Pan W, Yu G, Wang J. Carbon dots with red emission for bioimaging of fungal cells and detecting Hg 2+ and ziram in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118230. [PMID: 32179441 DOI: 10.1016/j.saa.2020.118230] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/18/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
It is of importance for bioimaging of fungal cells using biocompatible and low toxic carbon dots (CDs) as labels in plant protection field because a clearer understanding on the infection mechanism of fungi on plant can be achieved. Meanwhile, long wavelength, especially, red/near-infrared (NIR) emissive CDs are more biocompatible than short wavelength emissive ones. In this work, CDs with red emission were synthesized by solvothermal pyrolysis of citric acid, acrylamide dissolved in formamide. Fungal cells stained by the CDs with red emission were brightly illuminated when imaged on a fluorescent microscope with excitation by a green laser pulse, suggesting the CDs are of an excellent label for bioimaging of fungal cell in red color region. Moreover, the CDs show a selective response to Hg2+ in the NaAc-HAc buffer solution, while ziram can form a more stable complex with Hg2+, leading to a recovery of the quenched fluorescence of the CDs. Therefore, methods for the detections of Hg2+ and ziram based on the "off-on" fluorescence of the CDs were established with limits of detection as low as 0.19 μM and 0.55 μg/mL.
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Affiliation(s)
- Yanqiu Chen
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xiaobo Sun
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xiaoyu Wang
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Wei Pan
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Guifeng Yu
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Jinping Wang
- College of Chemical and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.
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Tosato M, Di Marco V. Metal Chelation Therapy and Parkinson's Disease: A Critical Review on the Thermodynamics of Complex Formation between Relevant Metal Ions and Promising or Established Drugs. Biomolecules 2019; 9:E269. [PMID: 31324037 PMCID: PMC6681387 DOI: 10.3390/biom9070269] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/03/2019] [Accepted: 07/04/2019] [Indexed: 12/14/2022] Open
Abstract
The present review reports a list of approximately 800 compounds which have been used, tested or proposed for Parkinson's disease (PD) therapy in the year range 2014-2019 (April): name(s), chemical structure and references are given. Among these compounds, approximately 250 have possible or established metal-chelating properties towards Cu(II), Cu(I), Fe(III), Fe(II), Mn(II), and Zn(II), which are considered to be involved in metal dyshomeostasis during PD. Speciation information regarding the complexes formed by these ions and the 250 compounds has been collected or, if not experimentally available, has been estimated from similar molecules. Stoichiometries and stability constants of the complexes have been reported; values of the cologarithm of the concentration of free metal ion at equilibrium (pM), and of the dissociation constant Kd (both computed at pH = 7.4 and at total metal and ligand concentrations of 10-6 and 10-5 mol/L, respectively), charge and stoichiometry of the most abundant metal-ligand complexes existing at physiological conditions, have been obtained. A rigorous definition of the reported amounts is given, the possible usefulness of this data is described, and the need to characterize the metal-ligand speciation of PD drugs is underlined.
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Affiliation(s)
- Marianna Tosato
- Analytical Chemistry Research Group, Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Valerio Di Marco
- Analytical Chemistry Research Group, Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy.
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