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Gonzalez-Ruiz C, Ortiz-Flores M, Bernal-Hernández J, Mondragon-Lozano R, Palma-Guzman A, Coyoy-Salgado A, Salgado-Ceballos H. Phytochemical Extract from Carica papaya Leaves and Punica granatum Seeds as Therapy Against Cognitive Impairment in a Murine Model. Mol Neurobiol 2024; 61:450-464. [PMID: 37626269 DOI: 10.1007/s12035-023-03547-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023]
Abstract
Mild cognitive impairment (MCI) is defined as inter-stage between normal cognitive aging and major neurocognitive disorder (MND). This state of decay is a crucial factor in treatment to prevent the progression to MND. In this study, our group developed a virtual screening process to evaluate 2568 phytochemical compounds against 5 key proteins associated with MCI and MND. As a result, two potential candidates were identified: carpaine, found in Carica papaya leaves, and punicalagin, present in Punica granatum. A model of cognitive impairment (CI) was developed in 10-month-old male Sprague Dawley rats by administering aluminum chloride (AlCl3) at a dose of 100 mg/kg/day for 30 days. After AlCl3 administration period, one of the groups received carpaine and punicalagin in a phytochemical extract (PE) by oral gavage for 30 days. Novel object recognition test (NOR) was assessed at three different time points (T1 - before CI, T2 - after CI, and T3 - after PE treatment). Glial fibrillary acidic protein (GFAP) and neurofilament light chain (NfL) were identified in the hippocampus of rats at the end of the study period. After administration of AlCl3, a reduction in discrimination index vs control rats (CI = 0.012 ± 0.08 vs Control = 0.076 ± 0.03), was observed. After phytochemical extract treatment, a significant increase in discrimination index values was observed in the PE group 0.4643 ± 0.13 vs CI group 0.012 ± 0.08. Additionally, the evaluation of immunohistochemistry showed an increase in GFAP positivity in the hippocampus of the CI groups, while a slight decrease was observed in the PE group. This work addressed a comprehensive methodology that utilized in silico tools to identify phytochemical compounds (carpaine and punicalagin) as potential candidates for affecting key proteins in CI. The phytochemical extract containing carpaine and punicalagin resulted in a trend in the decrease of GFAP expression in the hippocampus and improved recognition memory in rats with CI induced by age and AlCl3 administration.
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Affiliation(s)
- Cristian Gonzalez-Ruiz
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de Mexico, Mexico
| | - Miguel Ortiz-Flores
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Miguel Hidalgo, Mexico City, Mexico
| | - Jorge Bernal-Hernández
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de Mexico, Mexico
| | - Rodrigo Mondragon-Lozano
- Researchers for Mexico CONAHCyT-Instituto Mexicano del Seguro Social, Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Cuauhtémoc, Mexico city, Mexico
| | - Alam Palma-Guzman
- Instituto Mexicano del Seguro Social, Laboratorio de Histología, Coordinación de Investigación en Salud, Centro Médico Nacional Siglo XXI, Cuauhtémoc, Mexico City, Mexico
| | - Angélica Coyoy-Salgado
- Researchers for Mexico CONAHCyT-Instituto Mexicano del Seguro Social, Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Cuauhtémoc, Mexico city, Mexico
| | - Hermelinda Salgado-Ceballos
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla, Estado de Mexico, Mexico.
- Instituto Mexicano del Seguro Social, Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Cuauhtémoc, Mexico City, Mexico.
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Bruschi M, Biancucci F, Masini S, Piacente F, Ligi D, Bartoccini F, Antonelli A, Mannello F, Bruzzone S, Menotta M, Fraternale A, Magnani M. The influence of redox modulation on hypoxic endothelial cell metabolic and proteomic profiles through a small thiol-based compound tuning glutathione and thioredoxin systems. Biofactors 2023; 49:1205-1222. [PMID: 37409789 DOI: 10.1002/biof.1988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/16/2023] [Indexed: 07/07/2023]
Abstract
Reduction in oxygen levels is a key feature in the physiology of the bone marrow (BM) niche where hematopoiesis occurs. The BM niche is a highly vascularized tissue and endothelial cells (ECs) support and regulate blood cell formation from hematopoietic stem cells (HSCs). While in vivo studies are limited, ECs when cultured in vitro at low O2 (<5%), fail to support functional HSC maintenance due to oxidative environment. Therefore, changes in EC redox status induced by antioxidant molecules may lead to alterations in the cellular response to hypoxia likely favoring HSC self-renewal. To evaluate the impact of redox regulation, HUVEC, exposed for 1, 6, and 24 h to 3% O2 were treated with N-(N-acetyl-l-cysteinyl)-S-acetylcysteamine (I-152). Metabolomic analyses revealed that I-152 increased glutathione levels and influenced the metabolic profiles interconnected with the glutathione system and the redox couples NAD(P)+/NAD(P)H. mRNA analysis showed a lowered gene expression of HIF-1α and VEGF following I-152 treatment whereas TRX1 and 2 were stimulated. Accordingly, the proteomic study revealed the redox-dependent upregulation of thioredoxin and peroxiredoxins that, together with the glutathione system, are the main regulators of intracellular ROS. Indeed, a time-dependent ROS production under hypoxia and a quenching effect of the molecule were evidenced. At the secretome level, the molecule downregulated IL-6, MCP-1, and PDGF-bb. These results suggest that redox modulation by I-152 reduces oxidative stress and ROS level in hypoxic ECs and may be a strategy to fine-tune the environment of an in vitro BM niche able to support functional HSC maintenance.
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Affiliation(s)
- Michela Bruschi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Federica Biancucci
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Sofia Masini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Francesco Piacente
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genoa, Genoa, GE, Italy
| | - Daniela Ligi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Antonella Antonelli
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Ferdinando Mannello
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Santina Bruzzone
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genoa, Genoa, GE, Italy
- IRCCS, Ospedale Policlinico San Martino, Genoa, GE, Italy
| | - Michele Menotta
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Alessandra Fraternale
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
| | - Mauro Magnani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, PU, Italy
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Patel H, Mishra R, Wier A, Mokhtarpour N, Merino EJ, Garrett JT. RIDR-PI-103, ROS-activated prodrug PI3K inhibitor inhibits cell growth and impairs the PI3K/Akt pathway in BRAF and MEK inhibitor-resistant BRAF-mutant melanoma cells. Anticancer Drugs 2023; 34:519-531. [PMID: 36847042 PMCID: PMC9997637 DOI: 10.1097/cad.0000000000001500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/06/2022] [Indexed: 03/01/2023]
Abstract
Reactive oxygen species (ROS) levels are elevated after acquisition of resistance to v-raf murine sarcoma viral oncogene homolog B1 (BRAF) inhibitors including dabrafenib and MEK inhibitors such as trametinib in BRAF-mutant melanoma. To circumvent toxicity to PI-103 (a pan PI3K inhibitor), we utilized a novel ROS-induced drug release (RIDR)-PI-103, with a self-cyclizing moiety linked to PI-103. Under high ROS conditions, RIDR-PI-103 releases PI-103, which inhibits conversion of phosphatidylinositol 4,5-bisphosphate (PIP 2 ) to phosphatidylinositol 3,4,5-triphosphate (PIP 3 ). Previous findings demonstrate that trametinib and dabrafenib-resistant (TDR) cells maintain p-Akt levels compared to parental counterparts and have significantly higher ROS. This is a rationale to explore the efficacy RIDR-PI-103 in TDR cells. We tested the effect of RIDR-PI-103 on melanocytes and TDR cells. RIDR-PI-103 exhibited less toxicity compared to PI-103 at 5 µM in melanocytes. RIDR-PI-103 significantly inhibited TDR cell proliferation at 5 and 10 µM. Twenty-four hour treatment with RIDR-PI-103 inhibited p-Akt, p-S6 (Ser240/244) and p-S6 (Ser235/236). We assessed the mechanism of activation of RIDR-PI-103, using glutathione or t-butyl hydrogen peroxide (TBHP) on the TDR cells in the presence or absence of RIDR-PI-103. Addition of the ROS scavenger glutathione to RIDR-PI-103 significantly rescued the cell proliferation in TDR cell lines while addition of the ROS inducer TBHP and RIDR-PI-103 inhibited cell proliferation in WM115 and WM983B TDR cell lines. Examining the efficacy of RIDR-PI-103 on BRAF and MEK inhibitor-resistant cells will expand possible treatment options and open avenues for the development of new ROS-based treatment therapies for BRAF-mutant melanoma patients.
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Affiliation(s)
- Hima Patel
- UT Southwestern Medical Center, Harold C. Simmons Cancer Center, Dallas
| | - Rosalin Mishra
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio
| | - Adam Wier
- Department of Chemistry, Hillsdale College, Hillsdale, Michigan
| | | | - Edward J. Merino
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, USA
| | - Joan T. Garrett
- Department of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio
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The Protective Role of Glutathione on Zinc-Induced Neuron Death after Brain Injuries. Int J Mol Sci 2023; 24:ijms24032950. [PMID: 36769273 PMCID: PMC9917832 DOI: 10.3390/ijms24032950] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Glutathione (GSH) is necessary for maintaining physiological antioxidant function, which is responsible for maintaining free radicals derived from reactive oxygen species at low levels and is associated with improved cognitive performance after brain injury. GSH is produced by the linkage of tripeptides that consist of glutamic acid, cysteine, and glycine. The adequate supplementation of GSH has neuroprotective effects in several brain injuries such as cerebral ischemia, hypoglycemia, and traumatic brain injury. Brain injuries produce an excess of reactive oxygen species through complex biochemical cascades, which exacerbates primary neuronal damage. GSH concentrations are known to be closely correlated with the activities of certain genes such as excitatory amino acid carrier 1 (EAAC1), glutamate transporter-associated protein 3-18 (Gtrap3-18), and zinc transporter 3 (ZnT3). Following brain-injury-induced oxidative stress, EAAC1 function is negatively impacted, which then reduces cysteine absorption and impairs neuronal GSH synthesis. In these circumstances, vesicular zinc is also released into the synaptic cleft and then translocated into postsynaptic neurons. The excessive influx of zinc inhibits glutathione reductase, which inhibits GSH's antioxidant functions in neurons, resulting in neuronal damage and ultimately in the impairment of cognitive function. Therefore, in this review, we explore the overall relationship between zinc and GSH in terms of oxidative stress and neuronal cell death. Furthermore, we seek to understand how the modulation of zinc can rescue brain-insult-induced neuronal death after ischemia, hypoglycemia, and traumatic brain injury.
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Mehrabian A, Dadpour S, Mashreghi M, Zarqi J, Askarizadeh A, Badiee A, Arabi L, Moosavian SA, Jaafari MR. The comparison of biodistribution of glutathione PEGylated nanoliposomal doxorubicin formulations prepared by pre-insertion and post-insertion methods for brain delivery in normal mice. IET Nanobiotechnol 2023; 17:112-124. [PMID: 36594666 PMCID: PMC10116028 DOI: 10.1049/nbt2.12111] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 01/04/2023] Open
Abstract
Several obstacles limit the efficacy of brain tumour treatment, most notably the blood-brain barrier (BBB), which prevents the brain uptake of the majority of accessible medicines due to tight junctions. The presence of glutathione (GSH) receptors on the BBB surface has been demonstrated in numerous papers; consequently, products containing glutathione as a targeting ligand coupled with nanoliposomes are used to enhance drug delivery across the BBB. Here, the 5% pre-inserted PEG2000-GSH PEGylated liposomal doxorubicin was conducted according to 2B3-101 being tested in clinical trials. In addition, PEGylated nanoliposomal doxorubicin connected to the spacer-GSH targeting ligand (GSGGCE) and the PEG3400 was conducted using post-insertion method. Next, in vivo biodistribution of the produced formulations was tested on healthy mice to see if GSGGCE, as the targeted ligand, could cross the BBB compared to 5% pre-inserted PEG2000-GSH and Caelyx® . Compared to the pre-inserted formulation and Caelyx® , the post-inserted formulations' concentration was lower in the heart and higher in brain tissues, resulting in boosting the brain concentration of accumulated doxorubicin with fewer possible side effects, including cardiotoxicity. In comparison to the pre-insertion procedure, the post-insertion method is easier, faster, and more cost-effective. Moreover, employing PEG3400 and the post-insertion approach in the PEG3400-GSGGCE liposomal formulations was found to be effective in crossing the BBB.
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Affiliation(s)
- Amin Mehrabian
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Saba Dadpour
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Student Research Committee, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Mashreghi
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Javad Zarqi
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Anis Askarizadeh
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Badiee
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Arabi
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyedeh Alia Moosavian
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Reza Jaafari
- Department of Pharmaceutical Nanotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Goncalves VC, Silva da Fonsêca V, de Paula Faria D, Izidoro MA, Berretta AA, de Almeida ACG, Affonso Fonseca FL, Scorza FA, Scorza CA. Propolis induces cardiac metabolism changes in 6-hydroxydopamine animal model: A dietary intervention as a potential cardioprotective approach in Parkinson’s disease. Front Pharmacol 2022; 13:1013703. [PMID: 36313332 PMCID: PMC9606713 DOI: 10.3389/fphar.2022.1013703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 09/23/2022] [Indexed: 11/24/2022] Open
Abstract
While there is sustained growth of the older population worldwide, ageing is a consistent risk factor for neurodegenerative diseases, such as Parkinson’s-disease (PD). Considered an emblematic movement disorder, PD comprises a miscellany of non-motor symptoms, for which effective management remains an unfulfilled need in clinical practice. Highlighted are the cardiovascular abnormalities, that cause significant burden in PD patients. Evidence suggests that key biological processes underlying PD pathophysiology can be modulated by diet-derived bioactive compounds, such as green propolis, a natural functional food with biological and pharmacological properties. The effects of propolis on cardiac affection associated to PD have received little coverage. In this study, a metabolomics approach and Positron Emission Tomography (PET) imaging were used to assess the metabolic response to diet supplementation with green propolis on heart outcomes of rats with Parkinsonism induced by 6-hydroxydopamine (6-OHDA rats). Untargeted metabolomics approach revealed four cardiac metabolites (2-hydroxybutyric acid, 3-hydroxybutyric acid, monoacylglycerol and alanine) that were significantly modified between animal groups (6-OHDA, 6-OHDA + Propolis and sham). Propolis-induced changes in the level of these cardiac metabolites suggest beneficial effects of diet intervention. From the metabolites affected, functional analysis identified changes in propanoate metabolism (a key carbohydrate metabolism related metabolic pathway), glucose-alanine cycle, protein and fatty acid biosynthesis, energy metabolism, glutathione metabolism and urea cycle. PET imaging detected higher glucose metabolism in the 17 areas of the left ventricle of all rats treated with propolis, substantially contrasting from those rats that did not consume propolis. Our results bring new insights into cardiac metabolic substrates and pathways involved in the mechanisms of the effects of propolis in experimental PD and provide potential novel targets for research in the quest for future therapeutic strategies.
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Affiliation(s)
- Valeria C. Goncalves
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- *Correspondence: Valeria C. Goncalves, ; Carla Alessandra Scorza,
| | - Victor Silva da Fonsêca
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Daniele de Paula Faria
- Laboratory of Nuclear Medicine (LIM43), Department of Radiology and Oncology, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, São Paulo, Brazil
| | - Mario Augusto Izidoro
- Laboratório de Espectrometria de Massas—Associação Beneficente de Coleta de Sangue (COLSAN), São Paulo, Brazil
| | | | - Antônio-Carlos G. de Almeida
- Laboratório de Neurociências Experimental e Computacional, Departamento de Engenharia de Biossistemas, Universidade Federal de São João Del-Rei (UFSJ), Minas Gerais, Brazil
| | - Fernando Luiz Affonso Fonseca
- Laboratório de Análises Clínicas da Faculdade de Medicina Do ABC, Santo André, São Paulo, Brazil
- Departamento de Ciencias Farmaceuticas da Universidade Federal de Sao Paulo (UNIFESP), Diadema, Brazil
| | - Fulvio Alexandre Scorza
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Carla Alessandra Scorza
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- *Correspondence: Valeria C. Goncalves, ; Carla Alessandra Scorza,
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Ali V, Behera S, Nawaz A, Equbal A, Pandey K. Unique thiol metabolism in trypanosomatids: Redox homeostasis and drug resistance. ADVANCES IN PARASITOLOGY 2022; 117:75-155. [PMID: 35878950 DOI: 10.1016/bs.apar.2022.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Trypanosomatids are mainly responsible for heterogeneous parasitic diseases: Leishmaniasis, Sleeping sickness, and Chagas disease and control of these diseases implicates serious challenges due to the emergence of drug resistance. Redox-active biomolecules are the endogenous substances in organisms, which play important role in the regulation of redox homeostasis. The redox-active substances like glutathione, trypanothione, cysteine, cysteine persulfides, etc., and other inorganic intermediates (hydrogen peroxide, nitric oxide) are very useful as defence mechanism. In the present review, the suitability of trypanothione and other essential thiol molecules of trypanosomatids as drug targets are described in Leishmania and Trypanosoma. We have explored the role of tryparedoxin, tryparedoxin peroxidase, ascorbate peroxidase, superoxide dismutase, and glutaredoxins in the anti-oxidant mechanism and drug resistance. Up-regulation of some proteins in trypanothione metabolism helps the parasites in survival against drug pressure (sodium stibogluconate, Amphotericin B, etc.) and oxidative stress. These molecules accept electrons from the reduced trypanothione and donate their electrons to other proteins, and these proteins reduce toxic molecules, neutralize reactive oxygen, or nitrogen species; and help parasites to cope with oxidative stress. Thus, a better understanding of the role of these molecules in drug resistance and redox homeostasis will help to target metabolic pathway proteins to combat Leishmaniasis and trypanosomiases.
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Affiliation(s)
- Vahab Ali
- Laboratory of Molecular Biochemistry and Cell Biology, Department of Biochemistry, ICMR-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna, Bihar, India.
| | - Sachidananda Behera
- Laboratory of Molecular Biochemistry and Cell Biology, Department of Biochemistry, ICMR-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna, Bihar, India
| | - Afreen Nawaz
- Laboratory of Molecular Biochemistry and Cell Biology, Department of Biochemistry, ICMR-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna, Bihar, India
| | - Asif Equbal
- Laboratory of Molecular Biochemistry and Cell Biology, Department of Biochemistry, ICMR-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna, Bihar, India; Department of Botany, Araria College, Purnea University, Purnia, Bihar, India
| | - Krishna Pandey
- Department of Clinical Medicine, ICMR-Rajendra Memorial Research Institute of Medical Sciences (RMRIMS), Patna, Bihar, India
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Wang X, Liu W, Jin G, Wu Z, Zhang D, Bao Y, Shi W. Salvia miltiorrhiza polysaccharides alleviates florfenicol induced kidney injury in chicks via inhibiting oxidative stress and apoptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 233:113339. [PMID: 35219255 DOI: 10.1016/j.ecoenv.2022.113339] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 02/18/2022] [Accepted: 02/20/2022] [Indexed: 06/14/2023]
Abstract
Florfenicol (FFC) is a commonly used antibiotic in animal husbandry, which is easy to cause organs damage in a variety of animals. It has been proved to have nephrotoxicity and affect the yield and quality of meat products. Salvia miltiorrhiza polysaccharides (SMPs) have been proved to have the pharmacological effects of regulating immunity and protecting the liver of animals, and its alleviative effect on renal injury is unclear. In order to investigate the alleviating effect of SMPs on drug nephrotoxicity and determine its potential molecular mechanism, we took chicks as the research object, FFC as the induced drug, and established the model by adding SMPs in drinking water. The chicks were randomly divided into control group, FFC model group (0.15 g/L FFC), FFC + low, medium and high dose of SMPs groups (0.15 g/L FFC + 1.25, 2.5, 5 g/L SMPs) and SMPs group (5 g/L SMPs). The results showed that, SMPs increased the average weight gain and renal index of chicks, alleviated the pathological changes of renal structure induced by FFC, decreased the contents of uric acid, blood urea nitrogen and creatinine in serum and malondialdehyde in renal tissue, increased the levels of glutathione, superoxide dismutase and catalase in renal tissue, up-regulated the relative expression levels of nuclear factor erythroid 2 related factor 2 (Nrf2), heme oxygenase-1 (HO-1) and nicotinamide adenine dinucleotide phosphate: quinone oxidoreductase-1 (NQO-1) mRNA and protein, and down-regulated the relative expression levels of p53, Caspase-3 and Caspase-6 mRNA and protein and the apoptosis rate of renal histiocytes. It is concluded that SMPs could significantly alleviate the renal injury induced by FFC, and its mechanism may be related to improving renal antioxidant capacity and inhibiting abnormal apoptosis of renal histiocytes.
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Affiliation(s)
- Xiao Wang
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Wei Liu
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Guozhong Jin
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Zhanjun Wu
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050035, China
| | - Di Zhang
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Yongzhan Bao
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China; Hebei Provincial Veterinary Biotechnology Innovation Center, Baoding 071001, China
| | - Wanyu Shi
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China; Hebei Provincial Veterinary Biotechnology Innovation Center, Baoding 071001, China.
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Huynh TPN, Bowater RP, Bernuzzi F, Saha S, Wormstone IM. GSH Levels Serve As a Biological Redox Switch Regulating Sulforaphane-Induced Cell Fate in Human Lens Cells. Invest Ophthalmol Vis Sci 2021; 62:2. [PMID: 34854886 PMCID: PMC8648057 DOI: 10.1167/iovs.62.15.2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/08/2021] [Indexed: 01/10/2023] Open
Abstract
Purpose Sulforaphane (SFN) is a therapeutic phytochemical agent for many health conditions. SFN-induced cytotoxicity is shown to have promise in preventing posterior capsule opacification (PCO). In the current study, we aimed to elucidate key processes and mechanisms linking SFN treatment to lens cell death. Methods The human lens epithelial cell line FHL124 and central anterior epithelium were used as experimental models. Cell death was assessed by microscopic observation and cell damage/viability assays. Gene or protein levels were assessed by TaqMan RT-PCR or immunoblotting. Mitochondrial networks and DNA damage were assessed by immunofluorescence. Mitochondrial membrane potential, activating transcription factor 6 (ATF6) activity, ratio of reduced glutathione (GSH) to oxidized glutathione (GSSG), and glutathione reductase (GR) activity were measured using different light reporter assays. SFN metabolites were analyzed by LC-MS/MS. Results Treatment with N-acetylcysteine (NAC), a reactive oxygen species scavenger, prevented SFN-induced cell death in both models. NAC also significantly protected FHL124 cells from SFN-induced mitochondrial dysfunctions, endoplasmic reticulum stress (ERS), DNA damage and autophagy. SFN significantly depleted GSH, the major antioxidant in the eye, and reduced GR activity, despite doubling its protein levels. The most abundant SFN conjugate detected in lens cells following SFN application was SFN-GSH. The addition of GSH protected lens cells from all SFN-induced cellular events. Conclusions SFN depletes GSH levels in lens cells through conjugation and inhibition of GR activity. This leads to increased reactive oxygen species and oxidative stress that trigger mitochondrial dysfunction, ERS, autophagy, and DNA damage, leading to cell death. In summary, the work presented provides a mechanistic understanding to support the therapeutic application of SFN for PCO and other disorders.
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Affiliation(s)
| | - Richard P. Bowater
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
| | - Federico Bernuzzi
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
- Quadram Institute, Norwich Research Park, Norwich, United Kingdom
| | - Shikha Saha
- Quadram Institute, Norwich Research Park, Norwich, United Kingdom
| | - I. Michael Wormstone
- School of Biological Sciences, University of East Anglia, Norwich, United Kingdom
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10
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Ghoneum M, El-Gerbed MSA. Human placental extract ameliorates methotrexate-induced hepatotoxicity in rats via regulating antioxidative and anti-inflammatory responses. Cancer Chemother Pharmacol 2021; 88:961-971. [PMID: 34505929 PMCID: PMC8536621 DOI: 10.1007/s00280-021-04349-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/27/2021] [Indexed: 01/24/2023]
Abstract
PURPOSE Methotrexate (MTX) induces hepatotoxicity, limiting its clinical efficacy as a widely known chemotherapy drug. In the current study, we examined the protective effect of human placenta extract (HPE) against MTX-induced liver damage in rats, as well as its ability to regulate antioxidative and anti-inflammatory liver responses. METHODS Male rats were orally administered MTX at a daily dose of 5 mg/kg-body-weight in the presence or absence of HPE (10.08 mg/kg) for 2 weeks. We measured the biological effects of MTX and HPE on the levels of liver enzymes, lipid profile, lipid peroxidation, oxidative stress biomarkers, and cytokines [tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and interleukin-10 (IL-10)]. In addition, histological examination and histopathological scoring of liver tissues were performed. RESULTS MTX-treated rats showed significantly increased (p < 0.001) liver enzyme levels for aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), total bilirubin, total cholesterol, and triglyceride levels. However, HPE supplementation in MTX-treated rats significantly decreased (p < 0.001) these elevated levels. HPE supplementation also significantly reduced the oxidative stress biomarker malondialdehyde (MDA), reversed the reduction in glutathione (GSH), and markedly increased the antioxidant enzyme activities of catalase (CAT) and superoxide dismutase (SOD) in the livers of MTX-treated rats. Furthermore, HPE supplementation significantly decreased the MTX-elevated levels of the pro-inflammatory cytokines TNF-α, IL-6, and IL-10. Histopathological examinations showed that MTX produced severe cellular damage and inflammatory lesions in liver tissues, while treatment with HPE improved hepatic histologic architecture. CONCLUSION HPE has the ability to ameliorate methotrexate-induced liver injury in rats by mechanisms that include boosting antioxidative responses and down-regulating MDA and pro-inflammatory cytokine production.
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Affiliation(s)
- Mamdooh Ghoneum
- Department of Surgery, Charles R. Drew University of Medicine and Science, 1621 E. 120th Street, Los Angeles, CA, 90059, USA.
- Department of Surgery, University of California Los Angeles, Los Angeles, CA, 90095, USA.
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11
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Kim EH, Jeong JA, Choi EK, Jeong TY. Antioxidant enzyme activity in Daphnia magna under microscopic observation and shed carapace length as an alternative growth endpoint. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148771. [PMID: 34225144 DOI: 10.1016/j.scitotenv.2021.148771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/09/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
Daphnia magna is an important organism for exposure studies in ecotoxicology. Body length measurement of a daphnid is a useful endpoint that represents the adverse effects of exposed chemicals or conditions on growth. This study questioned whether stress on body length measurement conditions while maintaining Daphnia magna on a slide glass results in any impact to antioxidant enzyme activity or growth. At the same time, the shed carapace length was tested to see if it could predict body length and be used as an alternative endpoint. The measured catalase (CAT) activity decreased as the exposure time to the on-slide conditions increased from 30 s to 120 s, although glutathione-S-transferase (GST) activity was not affected. On the other hand, regression between body length and two parameters of shed carapace length showed R2 values, 0.869 and 0.924. Growth measured for each molting for three weeks was not affected by the exposure to the on-slide conditions. Finally, this study confirmed potential oxidative stress based on the exposure time dependent CAT activity in Daphnia magna under microscopic observation. More importantly, the shed carapace length was validated to reflect body length and it implies applicability of the new parameters to sublethal effect measurement using Daphnia magna. This study suggests potential interference is possible with the traditional growth measurement method on antioxidant enzyme activity in Daphnia magna and proposes better experimental practices to avoid the interference.
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Affiliation(s)
- Eun Hye Kim
- Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies, 81, Oedae-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17035, Republic of Korea
| | - Ju An Jeong
- Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies, 81, Oedae-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17035, Republic of Korea
| | - Eun Kyong Choi
- Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies, 81, Oedae-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17035, Republic of Korea
| | - Tae-Yong Jeong
- Department of Environmental Science, College of Natural Sciences, Hankuk University of Foreign Studies, 81, Oedae-ro, Cheoin-gu, Yongin-si, Gyeonggi-do 17035, Republic of Korea.
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12
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Abstract
Glutathione (GSH) is the most abundant non-protein thiol, and plays crucial roles in the antioxidant defense system and the maintenance of redox homeostasis in neurons. GSH depletion in the brain is a common finding in patients with neurodegenerative diseases, such as Alzheimer’s disease and Parkinson’s disease, and can cause neurodegeneration prior to disease onset. Excitatory amino acid carrier 1 (EAAC1), a sodium-dependent glutamate/cysteine transporter that is selectively present in neurons, plays a central role in the regulation of neuronal GSH production. The expression of EAAC1 is posttranslationally controlled by the glutamate transporter-associated protein 3–18 (GTRAP3-18) or miR-96-5p in neurons. The regulatory mechanism of neuronal GSH production mediated by EAAC1 may be a new target in therapeutic strategies for these neurodegenerative diseases. This review describes the regulatory mechanism of neuronal GSH production and its potential therapeutic application in the treatment of neurodegenerative diseases.
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13
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Chen W, Jiang L, Hu Y, Tang N, Liang N, Li XF, Chen YW, Qin H, Wu L. Ferritin reduction is essential for cerebral ischemia-induced hippocampal neuronal death through p53/SLC7A11-mediated ferroptosis. Brain Res 2021; 1752:147216. [PMID: 33333054 DOI: 10.1016/j.brainres.2020.147216] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/02/2020] [Accepted: 11/25/2020] [Indexed: 12/23/2022]
Abstract
Cerebral ischemia is the most common cause of hippocampal neuronal death and the most prevalent cause of stroke with high mortality rate. Ferroptosis has been suggested to affect the role of hippocampal neurons. This study explores the influence of lentivirus infection-induced ferritin overexpression in hippocampal neuronal injury and death through simulations in August Copenhagen Irish rat models. Twenty-four-hour cerebral ischemia-reperfusion injury was induced in the rats after 90-min middle cerebral artery occlusion (MCAO). Ferritin overexpression was induced through lentivirus infection. The Morris Water Maze (MWM) test and tau hyperphosphorylation test were performed on hippocampal neurons to establish a MCAO model. The effect of ferritin overexpression on hippocampal neuronal death was evaluated using hematoxylin-eosin staining and annexin V/propidium iodide flow cytometry. The MWM test revealed that MCAO modeling decreased the cognitive and locomotor capacity of the rats, whereas ferritin overexpression partially reversed the effect of MCAO. In addition, the hyperphosphorylation of tau caused by MCAO was reduced by ferritin. Pathogenic changes, impaired viability, increased apoptosis, and elevated caspase-9 cleavage in hippocampal neurons were clearly recovered by ferritin. Moreover, robust reactive oxygen species production and glutathione consumption, which was induced by MCAO modeling, were ameliorated by ferritin. Furthermore, two key modulators of ferroptosis, p53 and SLC7A11, were demonstrated to be upregulated by MCAO modeling and downregulated by ferritin. Ferritin reduction is essential for cerebral ischemia-induced hippocampal neuronal ferroptosis mediated via p53 and SLC7A11.
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Affiliation(s)
- Wei Chen
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Lingfei Jiang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Yueqiang Hu
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Nong Tang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
| | - Ni Liang
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Xing-Feng Li
- Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Ye-Wen Chen
- Graduate College of Guangxi University of Traditional Chinese Medicine, Nanning, Guangxi, China
| | - Hongling Qin
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Lin Wu
- Department of Neurology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Guangxi Key Laboratory of Chinese Medicine Foundation Research, Guangxi University of Chinese Medicine, Nanning, Guangxi, China; Scientific Laboratorial Centre Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
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14
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Photo-Oxidative Protection of Chlorophyll a in C-Phycocyanin Aqueous Medium. Antioxidants (Basel) 2020; 9:antiox9121235. [PMID: 33291466 PMCID: PMC7762101 DOI: 10.3390/antiox9121235] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 01/28/2023] Open
Abstract
In this study, potential protection of chlorophyll a from illumination and oxidation-induced decomposition has been examined using C-phycocyanin (C-PC) aqueous medium. Photo-oxidation resistance of chlorophyll a was monitored in various aqueous media using ultraviolet-visible spectroscopy and direct-infusion atmospheric pressure chemical ionization mass spectrometry analysis. The spectroscopy results showed that chlorophyll a in C-PC medium experienced the lowest rate of conversion to its derivatives; thus, it was demonstrated that chlorophyll a was mostly intact in the C-PC medium. Furthermore, the C-PC treated with chlorophyll a showed the lowest concentrations of malondialdehyde, and chlorophyll a in C-PC medium did not cause serious damage to human liver cells in vitro after intensive illumination. Therefore, we propose a new method of protecting chlorophyll a from photodegradation and oxidation using C-PC aqueous medium.
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15
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Gao Y, Ye Y, Wang J, Zhang H, Wu Y, Wang Y, Yan L, Zhang Y, Duan S, Lv L, Wang Y. Effects of titanium dioxide nanoparticles on nutrient absorption and metabolism in rats: distinguishing the susceptibility of amino acids, metal elements, and glucose. Nanotoxicology 2020; 14:1301-1323. [PMID: 32930049 DOI: 10.1080/17435390.2020.1817597] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Food grade titanium dioxide (TiO2) containing nanofractions, is commonly applied to whiten and brighten food products, which put consumers under health risks of ingesting TiO2 nanoparticles (NPs). Although the oral toxicity of TiO2-NPs has been evaluated in several studies, gaps in knowledge exist regarding interactions between NPs and food components. Therefore, this study aimed to estimate the influence of TiO2-NPs on nutrient absorption and metabolism through an in situ intestinal loop experiment which conducted on adult Sprague Dawley (SD) rats after 30-d gastrointestinal exposure to TiO2-NPs of two different sizes (N-TiO2 and M-TiO2). Results showed that exposure to TiO2-NPs caused flat apical membranes with sparse and short microvilli and inflammatory infiltration in small intestine. Both particles were absorbed into small intestinal cells, but N-TiO2 with smaller size could more easily be transported through gut and raise the blood titanium (Ti) levels. Changes in serum levels of amino acid were also different after exposure to these two particles. After injecting mixed solution of nutrients into in situ intestinal loop, the N-TiO2 exposure groups displayed significant absorption inhibition of the added histidine (His) and metabolism disorder of some non-added amino acid. However, no influence was observed on metal elements or glucose levels. This study identified TiO2-NPs with small sizes could affect nutrient absorption and metabolism by inducing intestinal epithelium injury, and amino acids were more susceptible than metal elements and glucose. These findings suggested that foods supplemented with TiO2-NPs should be carefully consumed by people with high protein requirements, such as children, the elderly, and patients with high metabolic disease or intestinal inflammation.
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Affiliation(s)
- Yanjun Gao
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Yixuan Ye
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Jing Wang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Hao Zhang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Yao Wu
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Yihui Wang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Lailai Yan
- Department of Laboratorial Sciences and Technology, School of Public Health, Peking University, Beijing, PR China
| | - Yongliang Zhang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Shumin Duan
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Lizhi Lv
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
| | - Yun Wang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, PR China
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16
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Role of Excitatory Amino Acid Carrier 1 ( EAAC1) in Neuronal Death and Neurogenesis After Ischemic Stroke. Int J Mol Sci 2020; 21:ijms21165676. [PMID: 32784778 PMCID: PMC7460875 DOI: 10.3390/ijms21165676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 12/24/2022] Open
Abstract
Although there have been substantial advances in knowledge regarding the mechanisms of neuron death after stroke, effective therapeutic measures for stroke are still insufficient. Excitatory amino acid carrier 1 (EAAC1) is a type of neuronal glutamate transporter and considered to have an additional action involving the neuronal uptake of cysteine, which acts as a crucial substrate for glutathione synthesis. Previously, our lab demonstrated that genetic deletion of EAAC1 leads to decreased neuronal glutathione synthesis, increased oxidative stress, and subsequent cognitive impairment. Therefore, we hypothesized that reduced neuronal transport of cysteine due to deletion of the EAAC1 gene might exacerbate neuronal injury and impair adult neurogenesis in the hippocampus after transient cerebral ischemia. EAAC1 gene deletion profoundly increased ischemia-induced neuronal death by decreasing the antioxidant capacity. In addition, genetic deletion of EAAC1 also decreased the overall neurogenesis processes, such as cell proliferation, differentiation, and survival, after cerebral ischemia. These studies strongly support our hypothesis that EAAC1 is crucial for the survival of newly generated neurons, as well as mature neurons, in both physiological and pathological conditions. Here, we present a comprehensive review of the role of EAAC1 in neuronal death and neurogenesis induced by ischemic stroke, focusing on its potential cellular and molecular mechanisms.
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17
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Malcon LMC, Wearick-Silva LE, Zaparte A, Orso R, Luft C, Tractenberg SG, Donadio MVF, de Oliveira JR, Grassi-Oliveira R. Maternal separation induces long-term oxidative stress alterations and increases anxiety-like behavior of male Balb/cJ mice. Exp Brain Res 2020; 238:2097-2107. [PMID: 32656651 DOI: 10.1007/s00221-020-05859-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 06/20/2020] [Indexed: 01/23/2023]
Abstract
Early life stress (ELS) exposure is a well-known risk factor for the development of psychiatric conditions, including anxiety disorder. Preclinical studies show that maternal separation (MS), a classical model of ELS, causes hypothalamic-pituitary-adrenal (HPA) axis alterations, a key contributor to the stress response modulation. Given that HPA axis activation has been shown to induce oxidative stress, it is possible to hypothesize that oxidative stress mediates the relationship between chronic ELS exposure and the development of several disorders. Here, we investigate the effects of MS in the oxidative status [plasma and brain reduced glutathione, catalase and thiobarbituric acid reactive substances (TBARS)], metabolism (glucose, triglycerides and cholesterol) and anxiety-like behaviors in adult Balb/cJ mice. In short, we found that MS increased anxiety-like behaviors in the open field, light/dark test but not in the elevated-plus maze. Animals also presented increased circulating cholesterol, increased TBARS in the plasma and decreased catalase in the hippocampus. Our findings suggest that MS induces long-term alterations in oxidative stress and increased anxiety-like behaviors.
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Affiliation(s)
- Luiza Martins Costa Malcon
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil.,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Luis Eduardo Wearick-Silva
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil.,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Aline Zaparte
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil.,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Rodrigo Orso
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil.,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Carolina Luft
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Saulo Gantes Tractenberg
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil.,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil
| | - Márcio Vinicius Fagundes Donadio
- Laboratory of Pediatric Physical Activity, Infant Center, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Jarbas Rodrigues de Oliveira
- Laboratory of Cellular Biophysics and Inflammation, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Brazil
| | - Rodrigo Grassi-Oliveira
- Developmental Cognitive Neuroscience Lab (DCNL), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Avenida Ipiranga, 6681, prédio 11, sala 936-Partenon, Porto Alegre, RS, 90619-900, Brazil. .,Brain Institute (InsCer), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brazil.
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18
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Terzioğlu Bebitoğlu B, Oğuz E, Gökçe A. Effect of valproic acid on oxidative stress parameters of glutamate-induced excitotoxicity in SH-SY5Y cells. Exp Ther Med 2020; 20:1321-1328. [PMID: 32742366 PMCID: PMC7388284 DOI: 10.3892/etm.2020.8802] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 01/30/2020] [Indexed: 12/11/2022] Open
Abstract
Glutamate-induced excitotoxicity has been reported to be involved in the pathophysiology of neurodegenerative disorders. It has been proposed that valproic acid (VPA), which is used in epileptic and bipolar disorders, may be protective against excitotoxic insult. The aim of the present study was to investigate the effects of VPA against the glutamate excitotoxicity in the SH-SY5Y human neuroblastoma cell line and determine its anti-oxidant capacity by measuring oxidative and anti-oxidant biochemical parameters. SH-SY5Y human neuroblastoma cells were pre-treated with 1, 5 or 10 mM VPA prior to exposure to 15 mM glutamate. The MTT assay was performed to determine cell viability. To detect oxidative insult in glutamate toxicity and the potential anti-oxidant effect of VPA, the cell catalase (CAT), superoxide dismutase (SOD), malondialdehyde and hydrogen peroxide (H2O2) activity was determined. A progressive decline in cell viability was observed with increasing glutamate concentrations (1-50 mM). Treatment with 1 mM VPA was revealed to be effective in increasing the viability of cells exposed to glutamate for 24 h. Oxidative damage, including an increase in H2O2 and MDA, was observed in SH-SY5Y cells treated with glutamate and was reduced by pre-treatment with VPA. CAT activity was decreased following glutamate exposure, but VPA did not prevent this decrease. SOD activity was increased by treatment with VPA alone and was not affected by glutamate exposure. Overall, the present results confirmed the critical role of oxidative stress in glutamate-induced excitotoxicity. They also suggested that VPA may exert an anti-oxidant effect against glutamate-induced excitotoxicity by decreasing oxidative parameters, including H2O2 and MDA, but only had a slight effect on CAT and SOD activity, which have an anti-oxidant capacity.
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Affiliation(s)
- Berna Terzioğlu Bebitoğlu
- Department of Medical Pharmacology, İstanbul Medeniyet University School of Medicine, İstanbul 34700, Turkey
| | - Elif Oğuz
- Department of Medical Pharmacology, İstanbul Medeniyet University School of Medicine, İstanbul 34700, Turkey
| | - Acet Gökçe
- Department of Medical Pharmacology, İstanbul Medeniyet University School of Medicine, İstanbul 34700, Turkey
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Firozian F, Karami S, Ranjbar A, Azandaryani MT, Nili-Ahmadabadi A. Improvement of therapeutic potential N-acetylcysteine in acetaminophen hepatotoxicity by encapsulation in PEGylated nano-niosomes. Life Sci 2020; 255:117832. [PMID: 32450164 DOI: 10.1016/j.lfs.2020.117832] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/17/2020] [Accepted: 05/19/2020] [Indexed: 01/09/2023]
Abstract
AIMS N-Acetylcysteine (NAC) is an effective antidote for the treatment of acetaminophen (APAP) poisoning; however, due to its low stability and bioavailability, repeated dosing of NAC is needed. This study investigated the therapeutic efficacy of NAC by niosomal carriers. MATERIALS AND METHODS Niosomes were synthesized using surface active agents film hydration method and their physicochemical properties were characterized. In the in vivo study, in addition to control group, male rats were divided in different groups and challenged with an oral dose of APAP (2000 mg/kg); 4 h later, rats were administered normal saline, empty niosome (NIO), NAC (25 mg/kg) and NAC-loaded niosome (NAC-NIO) respectively, and sacrificed 48 h post-APAP overdose. KEY FINDINGS The particle size and zeta potential of NAC-NIO were 242.3 ± 18.5 nm and -23.9 ± 1.6 mV. The loading and encapsulation efficiency of niosomes were 1.22% ± 0.02% and 26.76% ± 6.02%. APAP administration leads to hepatic damage as evidenced by increases in serum hepatic enzyme levels and tissue levels of nitric oxide and lipid peroxidation as well as decreases in hepatic levels of reduced glutathione, catalase, superoxide dismutase, and glutathione peroxidase. Treatment of rats with NIO-NAC was remarkably more effective than NAC in improving biochemical changes such as serum hepatic aminotransferases. These findings were correlated well to the histopathological experiments. SIGNIFICANCE Our results suggest that NAC when delivered as a niosomal structure, is potentially more effective than NAC standard, in improving APAP-induced hepatotoxicity.
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Affiliation(s)
- Farzin Firozian
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran; Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Safoura Karami
- Department of Toxicology, Faculty of Pharmacy, Islamic Azad University-Pharmaceutical Sciences Branch (IAUPS), Tehran, Iran
| | - Akram Ranjbar
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran; Department of Pharmacology and Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Amir Nili-Ahmadabadi
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran; Department of Pharmacology and Toxicology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
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20
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Ahmad F, Haque S, Ravinayagam V, Ahmad A, Kamli MR, Barreto GE, Ghulam Md Ashraf. Developmental lead (Pb)-induced deficits in redox and bioenergetic status of cerebellar synapses are ameliorated by ascorbate supplementation. Toxicology 2020; 440:152492. [PMID: 32407874 DOI: 10.1016/j.tox.2020.152492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/08/2020] [Accepted: 05/07/2020] [Indexed: 10/24/2022]
Abstract
Neurotoxicity induced by exposure to heavy metal lead (Pb) is a concern of utmost importance particularly for countries with industrial-based economies. The developing brain is especially sensitive to exposure to even minute quantities of Pb which can alter neurodevelopmental trajectory with irreversible effects on motor, emotive-social and cognitive attributes even into later adulthood. Chemical synapses form the major pathway of inter-neuronal communications and are prime candidates for higher order brain (motor, memory and behavior) functions and determine the resistance/susceptibility for neurological disorders, including neuropsychopathologies. The synaptic pathways and mechanisms underlying Pb-mediated alterations in neuronal signaling and plasticity are not completely understood. Employing a biochemically isolated synaptosomal fraction which is enriched in synaptic terminals and synaptic mitochondria, this study aimed to analyze the alterations in bioenergetic and redox/antioxidant status of cerebellar synapses induced by developmental exposure to Pb (0.2 %). Moreover, we test the efficacy of vitamin C (ascorbate; 500 mg/kg body weight), a neuroprotective and neuromodulatory antioxidant, in mitigation of Pb-induced neuronal deficits. Our results implicate redox and bioenergetic disruptions as an underlying feature of the synaptic dysfunction observed in developmental Pb neurotoxicity, potentially contributing to consequent deficits in motor, behavioral and psychological attributes of the organisms. In addition, we establish ascorbate as a key ingredient for therapeutic approach against Pb induced neurotoxicity, particularly for early-life exposures.
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Affiliation(s)
- Faraz Ahmad
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin 9016, New Zealand.
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing & Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia
| | - Vijaya Ravinayagam
- Deanship of Scientific Research, Department of Nano-medicine Research, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, 31441, Saudi Arabia
| | - Aqeel Ahmad
- Department of Medical Biochemistry, College of Medicine, Shaqra University, Shaqra, 11961, Saudi Arabia
| | - Majid Rasool Kamli
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Health Research Institute, University of Limerick, Limerick, Ireland
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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21
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Ghoneum M, Abdulmalek S, Pan D. Reversal of age-associated oxidative stress in mice by PFT, a novel kefir product. Int J Immunopathol Pharmacol 2020; 34:2058738420950149. [PMID: 32862733 PMCID: PMC7466882 DOI: 10.1177/2058738420950149] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Oxidative stress is a key contributor to aging and age-related diseases. In the present study, we examine the protective effects of PFT, a novel kefir product, against age-associated oxidative stress using aged (10-month-old) mice. METHODS Mice were treated with PFT orally at a daily dose of 2 mg/kg body weight over 6 weeks, and antioxidant status, protein oxidation, and lipid peroxidation were studied in the brain, liver, and blood. RESULTS PFT supplementation significantly reduced the oxidative stress biomarkers malondialdehyde (MDA) and nitric oxide; reversed the reductions in glutathione (GSH) levels, total antioxidant capacity (TAC), and anti-hydroxyl radical (AHR) content; enhanced the antioxidant enzyme activities of glutathione peroxidase (GPx), catalase (CAT), and superoxide dismutase (SOD); inhibited the liver enzyme levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT); significantly reduced triglyceride (TG), total cholesterol (TC), and low density lipoprotein (LDL) levels; and significantly elevated high density lipoprotein (HDL) levels. Interestingly, PFT supplementation reversed the oxidative changes associated with aging, thus bringing levels to within the limits of the young control mice in the brain, liver, and blood. We also note that PFT affects the redox homeostasis of young mice and that it is corrected post-treatment with PFT. CONCLUSION Our findings show the effectiveness of dietary PFT supplementation in modulating age-associated oxidative stress in mice and motivate further studies of PFT's effects in reducing age-associated disorders where free radicals and oxidative stress are the major cause.
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Affiliation(s)
- Mamdooh Ghoneum
- Department of Surgery, Charles R. Drew University of Medicine and Science, Los Angeles, CA, USA
| | - Shaymaa Abdulmalek
- Department of Biochemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Deyu Pan
- Department of Preventive and Social Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, USA
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22
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Huang J, Jia Y, Li Q, Son K, Hamilton C, Burris WR, Bridges PJ, Stromberg AJ, Matthews JC. Glutathione content and expression of proteins involved with glutathione metabolism differs in longissimus dorsi, subcutaneous adipose, and liver tissues of finished vs. growing beef steers. J Anim Sci 2019; 96:5152-5165. [PMID: 30204884 DOI: 10.1093/jas/sky362] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 09/06/2018] [Indexed: 12/15/2022] Open
Abstract
Increased tissue redox state may result in sub-optimal growth. Our goal was to determine if glutathione (GSH) content and expression of proteins involved with GSH metabolism change in longissimus dorsi (LD), subcutaneous adipose (SA), and liver tissues of growing vs. finishing steer phenotypes. Tissues were taken from 16 Angus steers (BW = 209 ± 29.4 kg) randomly assigned (n = 8) to develop through Growing (final BW = 301 ± 7.06 kg) vs. Finished (final BW = 576 ± 36.9 kg) growth phases, and at slaughter had achieved different rib-eye area (REA) (53.2, 76.8 cm2), marbling scores (296, 668), and 12th rib adipose thickness (0.54, 1.73 cm), respectively (Amino Acids, doi:10.1007/s00726-018-2540-8). GSH content (mg/g wet tissue) was determined by a commercial assay and the relative content of target protein and mRNA in tissue homogenates was determined by Western blot and reverse-transcribed PCR analyses, respectively. The effect of growth phase (Finished vs. Growing) was assessed by ANOVA using the GLM procedure of SAS. The LD of Finished steers had more (P < 0.04) GSH (42%) and GSH synthesizing (GCLC, 61%; GCLM, 21%) and metabolizing (GPX1, 42%; GPX3, 73%; GGT1, 56%) enzymes, and less (P < 0.02) GPX2 (46%), EAAC1 (30%) and glutamine synthetase (GS) (28%), whereas GTRAP3-18 and ARL6IP1 did not differ (P > 0.57). Principal component analysis found that GSH content of LD was associated with REA and marbling score. The SA of Finished steers had less (P < 0.04) GSH (38%), GSH metabolizing (GPX4, 52%; GGT1, 71%) enzyme mRNA, and GTRAP3-18 (123%) and ARL6IP1 (43%), whereas the mRNA content of GSH-synthesizing enzymes and content of EAAC1 and GS did not differ (P > 0.32). The liver of Finished steers had less (P < 0.02) mRNA content of GSH synthesizing (GCLC, 39%; GSS 29%) and metabolizing (GPX1, 30%) enzymes, and more (P < 0.01) GSTM1 metabolizing enzyme (114%). The change in GSH content as steers fattened indicate an increased antioxidant capacity in the LD of Finished steers, and a decreased antioxidant capacity in SA, consistent with changes in enzyme and transporter expression. Changes in liver enzyme and transporter expression were consistent with no change in GSH content. The relationship of EAAC1 regulatory proteins (GTRAP3-18, ARL6IP1) to GSH, EAAC1, and GS content differs and changes as Growing steers develop into Finished phenotypes. These findings provide mechanistic insight into how antioxidant capacity occurs in tissues of economic and metabolic importance as cattle fatten.
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Affiliation(s)
- Jing Huang
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Yang Jia
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Qing Li
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Kwangwon Son
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Charles Hamilton
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Walter R Burris
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | - Phillip J Bridges
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
| | | | - James C Matthews
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY
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23
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Immunomodulatory Effects of Glutathione, Garlic Derivatives, and Hydrogen Sulfide. Nutrients 2019; 11:nu11020295. [PMID: 30704060 PMCID: PMC6412746 DOI: 10.3390/nu11020295] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/24/2019] [Accepted: 01/28/2019] [Indexed: 12/21/2022] Open
Abstract
Glutathione and aged garlic extract are sulfur-containing products that play important protective and regulatory roles within the immune system and in oxidative processes. Hydrogen sulfide (H2S), an endogenous, gaseous, signaling transmitter, has also been shown to be involved in the regulation of inflammation. Recent studies have shown that sulfur-containing compounds from garlic have beneficial effects in attenuating outcomes associated with cardiovascular disease and inflammation by a mechanism that may be related to the H2S signaling pathway. In this review, we summarize the main functions of glutathione (GSH), garlic derivatives and H2S and their role in the immune response and impact on health and disease.
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24
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Sano H, Namekata K, Kimura A, Shitara H, Guo X, Harada C, Mitamura Y, Harada T. Differential effects of N-acetylcysteine on retinal degeneration in two mouse models of normal tension glaucoma. Cell Death Dis 2019; 10:75. [PMID: 30692515 PMCID: PMC6349904 DOI: 10.1038/s41419-019-1365-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/17/2018] [Accepted: 01/14/2019] [Indexed: 12/24/2022]
Abstract
N-acetylcysteine (NAC) is widely used as a mucolytic agent and as an antidote to paracetamol overdose. NAC serves as a precursor of cysteine and stimulates the synthesis of glutathione in neural cells. Suppressing oxidative stress in the retina may be an effective therapeutic strategy for glaucoma, a chronic neurodegenerative disease of the retinal ganglion cells (RGCs) and optic nerves. Here we examined the therapeutic potential of NAC in two mouse models of normal tension glaucoma, in which excitatory amino-acid carrier 1 (EAAC1) or glutamate/aspartate transporter (GLAST) gene was deleted. EAAC1 is expressed in retinal neurons including RGCs, whereas GLAST is mainly expressed in Müller glial cells. Intraperitoneal administration of NAC prevented RGC degeneration and visual impairment in EAAC1-deficient (knockout; KO) mice, but not in GLAST KO mice. In EAAC1 KO mice, oxidative stress and autophagy were suppressed with increased glutathione levels by NAC treatment. Our findings suggest a possibility that systemic administration of NAC may be available for some types of glaucoma patients.
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Affiliation(s)
- Hiroki Sano
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kazuhiko Namekata
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
| | - Atsuko Kimura
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hiroshi Shitara
- Laboratory for Transgenic Technology, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Xiaoli Guo
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Chikako Harada
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yoshinori Mitamura
- Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Takayuki Harada
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Department of Ophthalmology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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25
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Zhao J, Xie C, Mu X, Krausz KW, Patel DP, Shi X, Gao X, Wang Q, Gonzalez FJ. Metabolic alterations in triptolide-induced acute hepatotoxicity. Biomed Chromatogr 2018; 32:e4299. [PMID: 29799631 DOI: 10.1002/bmc.4299] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/06/2018] [Accepted: 05/16/2018] [Indexed: 12/11/2022]
Abstract
Triptolide, a major active constitute of Tripterygium wilfordii Hook. F, is prescribed for the treatment of autoimmune diseases in China. One of its most severe adverse effects observed in the clinical use is hepatotoxicity, but the mechanism is still unknown. Therefore, the present study applied an LC/MS-based metabolomic analysis to characterize the metabolomic changes in serum and liver induced by triptolide in mice. Mice were administered triptolide by gavage to establish the acute liver injury model, and serum biochemical and liver histological analyses were applied to assess the degree of toxicity. Multivariate data analyses were performed to investigate the metabolic alterations. Potential metabolites were identified using variable importance in the projection values and Student's t-test. A total of 30 metabolites were observed that were significantly changed by triptolide treatment and the abundance of 29 metabolites was correlated with the severity of toxicity. Pathway analysis indicated that the mechanism of triptolide-induced hepatotoxicity was related to alterations in multiple metabolic pathways, including glutathione metabolism, tricarboxylic acid cycle, purine metabolism, glycerophospholipid metabolism, taurine and hypotaurine metabolism, pantothenate and CoA biosynthesis, pyrimidine metabolism and amino acid metabolism. The current study provides new mechanistic insights into the metabolic alterations that lead to triptolide-induced hepatotoxicity.
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Affiliation(s)
- Jie Zhao
- Hebei Medical University, School of Pharmaceutical Science, Shijiazhuang, Hebei, China.,National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
| | - Cen Xie
- National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
| | - Xiyan Mu
- Hebei Medical University, School of Pharmaceutical Science, Shijiazhuang, Hebei, China
| | - Kristopher W Krausz
- National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
| | - Daxesh P Patel
- National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
| | - Xiaowei Shi
- Hebei Medical University, School of Pharmaceutical Science, Shijiazhuang, Hebei, China
| | - Xiaoxia Gao
- National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
| | - Qiao Wang
- Hebei Medical University, School of Pharmaceutical Science, Shijiazhuang, Hebei, China
| | - Frank J Gonzalez
- National Cancer Institute, National Institutes of Health, Laboratory of Metabolism, Center for Cancer Research, Bethesda, Maryland, USA
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26
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Oshikane H, Watabe M, Kikuchi-Utsumi K, Nakaki T. Rab1a rescues the toxicity of PRAF3. Biochem Biophys Rep 2018; 14:16-19. [PMID: 29872729 PMCID: PMC5986628 DOI: 10.1016/j.bbrep.2018.03.002] [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: 01/05/2018] [Revised: 03/07/2018] [Accepted: 03/16/2018] [Indexed: 11/15/2022] Open
Abstract
The PRA1-superfamily member PRAF3 plays pivotal roles in membrane traffic as a GDI displacement factor via physical interaction with a variety of Rab proteins, as well as in the modulation of antioxidant glutathione through its interaction with EAAC1 (SLC1A1). Overproduction of PRAF3 is known to be toxic to the host cells, although the factors capable of cancelling the toxicity remained unknown. We here show that Rab1a can rescue the cytotoxicity caused by PRAF3 possibly by “positively” regulating ER-Golgi trafficking, cancelling the “negative” modulation by PRAF3. Our results illuminate the close physiological relationship between PRAF3 and Rab proteins. PRAF3 exhibits cytotoxicity both in yeast and human cells. Among Rabs, only Rab1a can rescue the toxicity of PRAF3. PRAF3 expression may be strictly regulated in accordance with Rab1a expression.
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Affiliation(s)
- Hiroyuki Oshikane
- Department of Pharmacology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan
| | - Masahiko Watabe
- Department of Pharmacology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan.,General Medical Education and Research Center (G-MEC), Teikyo University, Kaga 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan
| | - Kazue Kikuchi-Utsumi
- Department of Pharmacology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan
| | - Toshio Nakaki
- Department of Pharmacology, Teikyo University School of Medicine, Kaga 2-11-1, Itabashi-ku, Tokyo 173-8605, Japan
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27
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Effects of Protocatechuic Acid (PCA) on Global Cerebral Ischemia-Induced Hippocampal Neuronal Death. Int J Mol Sci 2018; 19:ijms19051420. [PMID: 29747437 PMCID: PMC5983751 DOI: 10.3390/ijms19051420] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/08/2018] [Accepted: 05/08/2018] [Indexed: 12/31/2022] Open
Abstract
Global cerebral ischemia (GCI) is one of the main causes of hippocampal neuronal death. Ischemic damage can be rescued by early blood reperfusion. However, under some circumstances reperfusion itself can trigger a cell death process that is initiated by the reintroduction of blood, followed by the production of superoxide, a blood⁻brain barrier (BBB) disruption and microglial activation. Protocatechuic acid (PCA) is a major metabolite of the antioxidant polyphenols, which have been discovered in green tea. PCA has been shown to have antioxidant effects on healthy cells and anti-proliferative effects on tumor cells. To test whether PCA can prevent ischemia-induced hippocampal neuronal death, rats were injected with PCA (30 mg/kg/day) per oral (p.o) for one week after global ischemia. To evaluate degenerating neurons, oxidative stress, microglial activation and BBB disruption, we performed Fluoro-Jade B (FJB), 4-hydroxynonenal (4HNE), CD11b, GFAP and IgG staining. In the present study, we found that PCA significantly decreased degenerating neuronal cell death, oxidative stress, microglial activation, astrocyte activation and BBB disruption compared with the vehicle-treated group after ischemia. In addition, an ischemia-induced reduction in glutathione (GSH) concentration in hippocampal neurons was recovered by PCA administration. Therefore, the administration of PCA may be further investigated as a promising tool for decreasing hippocampal neuronal death after global cerebral ischemia.
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28
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Huang J, Jia Y, Li Q, Burris WR, Bridges PJ, Matthews JC. Hepatic glutamate transport and glutamine synthesis capacities are decreased in finished vs. growing beef steers, concomitant with increased GTRAP3-18 content. Amino Acids 2018; 50:513-525. [PMID: 29392419 PMCID: PMC5917004 DOI: 10.1007/s00726-018-2540-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 01/22/2018] [Indexed: 01/17/2023]
Abstract
Hepatic glutamate uptake and conversion to glutamine is critical for whole-body N metabolism, but how this process is regulated during growth is poorly described. The hepatic glutamate uptake activities, protein content of system [Formula: see text] transporters (EAAC1, GLT-1) and regulatory proteins (GTRAP3-18, ARL6IP1), glutamine synthetase (GS) activity and content, and glutathione (GSH) content, were compared in liver tissue of weaned Angus steers randomly assigned (n = 8) to predominantly lean (growing) or predominantly lipid (finished) growth regimens. Steers were fed a cotton seed hull-based diet to achieve final body weights of 301 or 576 kg, respectively, at a constant rate of growth. Liver tissue was collected at slaughter and hepatic membranes fractionated. Total (75%), Na+-dependent (90%), system [Formula: see text]-dependent (abolished) glutamate uptake activity, and EAAC1 content (36%) in canalicular membrane-enriched vesicles decreased as steers developed from growing (n = 6) to finished (n = 4) stages, whereas Na+-independent uptake did not change. In basolateral membrane-enriched vesicles, total (60%), Na+-dependent (60%), and Na+-independent (56%) activities decreased, whereas neither system [Formula: see text]-dependent uptake nor protein content changed. EAAC1 protein content in liver homogenates (n = 8) decreased in finished vs. growing steers, whereas GTRAP3-18 and ARL6IP1 content increased and GLT-1 content did not change. Concomitantly, hepatic GS activity decreased (32%) as steers fattened, whereas GS and GSH contents did not differ. We conclude that hepatic glutamate uptake and GS synthesis capacities are reduced in livers of finished versus growing beef steers, and that hepatic system [Formula: see text] transporter activity/EAAC1 content is inversely proportional to GTRAP3-18 content.
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Affiliation(s)
- J Huang
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA
| | - Y Jia
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA
| | - Q Li
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA
| | - W R Burris
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA
| | - P J Bridges
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA
| | - J C Matthews
- Department of Animal and Food Sciences, University of Kentucky, Lexington, 40546, USA.
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29
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Ren X, Zou L, Zhang X, Branco V, Wang J, Carvalho C, Holmgren A, Lu J. Redox Signaling Mediated by Thioredoxin and Glutathione Systems in the Central Nervous System. Antioxid Redox Signal 2017; 27:989-1010. [PMID: 28443683 PMCID: PMC5649126 DOI: 10.1089/ars.2016.6925] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
SIGNIFICANCE The thioredoxin (Trx) and glutathione (GSH) systems play important roles in maintaining the redox balance in the brain, a tissue that is prone to oxidative stress due to its high-energy demand. These two disulfide reductase systems are active in various areas of the brain and are considered to be critical antioxidant systems in the central nervous system (CNS). Various neuronal disorders have been characterized to have imbalanced redox homeostasis. Recent Advances: In addition to their detrimental effects, recent studies have highlighted that reactive oxygen species/reactive nitrogen species (ROS/RNS) act as critical signaling molecules by modifying thiols in proteins. The Trx and GSH systems, which reversibly regulate thiol modifications, regulate redox signaling involved in various biological events in the CNS. CRITICAL ISSUES In this review, we focus on the following: (i) how ROS/RNS are produced and mediate signaling in CNS; (ii) how Trx and GSH systems regulate redox signaling by catalyzing reversible thiol modifications; (iii) how dysfunction of the Trx and GSH systems causes alterations of cellular redox signaling in human neuronal diseases; and (iv) the effects of certain small molecules that target thiol-based signaling pathways in the CNS. FUTURE DIRECTIONS Further study on the roles of thiol-dependent redox systems in the CNS will improve our understanding of the pathogenesis of many human neuronal disorders and also help to develop novel protective and therapeutic strategies against neuronal diseases. Antioxid. Redox Signal. 27, 989-1010.
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Affiliation(s)
- Xiaoyuan Ren
- 1 Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet , Stockholm, Sweden
| | - Lili Zou
- 1 Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet , Stockholm, Sweden .,2 Translational Neuroscience and Neural Regeneration and Repair Institute/Institute of Cell Therapy, The First Hospital of Yichang, Three Gorges University , Yichang, China
| | - Xu Zhang
- 1 Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet , Stockholm, Sweden
| | - Vasco Branco
- 3 Research Institute for Medicines (iMed.ULisboa) , Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - Jun Wang
- 2 Translational Neuroscience and Neural Regeneration and Repair Institute/Institute of Cell Therapy, The First Hospital of Yichang, Three Gorges University , Yichang, China
| | - Cristina Carvalho
- 3 Research Institute for Medicines (iMed.ULisboa) , Faculty of Pharmacy, Universidade de Lisboa, Lisboa, Portugal
| | - Arne Holmgren
- 1 Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet , Stockholm, Sweden
| | - Jun Lu
- 4 School of Pharmaceutical Sciences, Southwest University , Chongqing, China
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30
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Ikemoto MJ, Murasawa Y, Wang PC. Pentylenetetrazol modulates redox system by inducing addicsin translocation from endoplasmic reticulum to plasma membrane in NG108-15 cells. Biochem Biophys Rep 2017; 11:72-78. [PMID: 28955770 PMCID: PMC5614697 DOI: 10.1016/j.bbrep.2017.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/09/2017] [Accepted: 06/22/2017] [Indexed: 11/28/2022] Open
Abstract
Addicsin (Arl6ip5) is a multifunctional physiological and pathophysiological regulator that exerts its effects by readily forming homo- and hetero-complexes with various functional factors. In particular, addicsin acts as a negative modulator of neural glutamate transporter excitatory amino acid carrier 1 (EAAC1) and participates in the regulation of intracellular glutathione (GSH) content by negatively modulating EAAC1-mediated cysteine and glutamate uptake. Addicsin is considered to play a crucial role in the onset of neurodegenerative diseases including epilepsy. However, the molecular dynamics of addicsin remains largely unknown. Here, we report the dynamics of addicsin in NG108-15 cells upon exposure to pentylenetetrazol (PTZ), a representative epileptogenic agent acting on the gamma-Aminobutyric acid A (GABAA) receptor. Fluorescent immunostaining analysis demonstrated that addicsin drastically changed its localization from the endoplasmic reticulum (ER) to the plasma membrane within 1 h of PTZ exposure in a dose-dependent manner. Moreover, addicsin was co-localized with the plasma membrane markers EAAC1 and Na+/K+ ATPase alpha-3 upon PTZ stimulation. This translocation was significantly inhibited by a non-competitive GABAA receptor antagonist, picrotoxin, but not by a competitive GABAA receptor antagonist, bicuculline. Furthermore, lactate dehydrogenase (LDH) assay and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay showed that PTZ-induced addicsin translocation was accompanied by a decrease of radical-scavenging activity and an increase of cytotoxicity in a PTZ dose-dependent manner. These findings suggest that PTZ induces the translocation of addicsin from the ER to the plasma membrane and modulates the redox system by regulating EAAC1-mediated GSH synthesis, which leads to the activation of cell death signaling.
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Key Words
- ANOVA, analysis of variance
- Addicsin (Arl6ip5/GTRAP3-18/JWA/PRAF3)
- Arl6ip1/ARMER, ADP-ribosylation-like factor 6- interacting protein 1
- Cytotoxicity
- DMEM, Dulbecco's Modified Eagle Medium
- DPPH, 2,2-diphenyl-1-picrylhydrazyl
- EEAC1, excitatory amino acid carrier 1
- ER, endoplasmic reticulum
- GABA, gamma-Aminobutyric acid
- GAPDH, glyceraldehyde 3-phosphate dehydrogenase
- GSH, glutathione
- IC, immunocytochemistry
- IgG, immunoglobulin G
- LDH, lactate dehydrogenase
- PBS, phosphate-buffered saline
- PCR, polymerase chain reaction
- PTZ, pentylenetetrazol
- PVDF, polyvinylidene fluoride
- Pentylenetetrazol
- Plasma membrane
- RT, room temperature
- Radical-scavenging activity
- SDS, sodium dodecyl sulfate
- TMEFF1, tomoregulin-1
- Translocation
- WB, western blotting
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Affiliation(s)
- Mitsushi J Ikemoto
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.,Graduate School of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan
| | - Yusuke Murasawa
- National Center for Geriatrics and Gerontology, 7-430 Morioka, Obu, Aichi 474-851, Japan
| | - Pi-Chao Wang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
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31
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Afshari P, Yao WD, Middleton FA. Reduced Slc1a1 expression is associated with neuroinflammation and impaired sensorimotor gating and cognitive performance in mice: Implications for schizophrenia. PLoS One 2017; 12:e0183854. [PMID: 28886095 PMCID: PMC5590851 DOI: 10.1371/journal.pone.0183854] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 08/11/2017] [Indexed: 12/11/2022] Open
Abstract
We previously reported a 84-Kb hemi-deletion copy number variant at the SLC1A1 gene locus that reduces its expression and appeared causally linked to schizophrenia. In this report, we characterize the in vivo and in vitro consequences of reduced expression of Slc1a1 in mice. Heterozygous (HET) Slc1a1+/- mice, which more closely model the hemi-deletion we found in human subjects, were examined in a series of behavioral, anatomical and biochemical assays. Knockout (KO) mice were also included in the behavioral studies for comparative purposes. Both HET and KO mice exhibited evidence of increased anxiety-like behavior, impaired working memory, decreased exploratory activity and impaired sensorimotor gating, but no changes in overall locomotor activity. The magnitude of changes was approximately equivalent in the HET and KO mice suggesting a dominant effect of the haploinsufficiency. Behavioral changes in the HET mice were accompanied by reduced thickness of the dorsomedial prefrontal cortex. Whole transcriptome RNA-Seq analysis detected expression changes of genes and pathways involved in cytokine signaling and synaptic functions in both brain and blood. Moreover, the brains of Slc1a1+/- mice displayed elevated levels of oxidized glutathione, a trend for increased oxidative DNA damage, and significantly increased levels of cytokines. This latter finding was further supported by SLC1A1 knockdown and overexpression studies in differentiated human neuroblastoma cells, which led to decreased or increased cytokine expression, respectively. Taken together, our results suggest that partial loss of the Slc1a1 gene in mice causes haploinsufficiency associated with behavioral, histological and biochemical changes that reflect an altered redox state and may promote the expression of behavioral features and inflammatory states consistent with those observed in schizophrenia.
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Affiliation(s)
- Parisa Afshari
- Department of Neuroscience & Physiology, SUNY Upstate Medical University, Syracuse, NY United States of America
| | - Wei-Dong Yao
- Department of Neuroscience & Physiology, SUNY Upstate Medical University, Syracuse, NY United States of America.,Department of Psychiatry & Behavioral Sciences, SUNY Upstate Medical University, Syracuse, NY, United States of America
| | - Frank A Middleton
- Department of Neuroscience & Physiology, SUNY Upstate Medical University, Syracuse, NY United States of America.,Department of Psychiatry & Behavioral Sciences, SUNY Upstate Medical University, Syracuse, NY, United States of America.,Department of Biochemistry & Molecular Biology, SUNY Upstate Medical University, Syracuse, NY, United States of America
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32
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Wang QJ, Cui YZ, Zhang XY, Su J. Effect of early weaning on the expression of excitatory amino acid transporter 1 in the jejunum and ileum of piglets. Mol Med Rep 2017; 16:6518-6525. [PMID: 28901430 PMCID: PMC5865820 DOI: 10.3892/mmr.2017.7421] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 05/02/2017] [Indexed: 12/15/2022] Open
Abstract
The present study aimed to compare the expression levels of excitatory amino acid transporters (EAATs) and growth status of piglets weaned at 10–20 days after birth with suckling piglets. A total of 40 hybrid piglets (Landrace × Large White × Duroc) born to 40 different sows, with similar body weight were selected for the present study. They were randomly divided into two groups (n=20 per group): Control group (suckling piglets) and experimental group (weaned piglets, reared in isolation). The experiment lasted for 10 days. At the end of the experiment, 12 piglets were randomly selected from each group and the jejunum and the ileum were collected in order to determine excitatory amino acid carrier 1 (EAAC1) expression levels and free amino acid content. The present study determined that early weaning significantly reduced EAAC1 gene and protein (57 and 73 kDa) expression levels and glutamate transporter associate protein 3–18 (GTRAP3-18; 50 kDa) in the jejunum and the ileum compared with the suckling group (P<0.05). Weaning led to an increased content of free glutamic acid (Glu) and total amino acids in the jejunum; however, content of free Glu and total amino acids in the ileum was significantly reduced (P<0.05). Early weaning reduced the expression of EAAC1 and GTRAP3-18, which was possibly due to the amino acid absorption and transport disorder in the small intestine due to the Glu deficiency.
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Affiliation(s)
- Qiu-Ju Wang
- Department of Basic Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Yi-Zhe Cui
- Department of Animal Medicine, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, P.R. China
| | - Xiu-Ying Zhang
- Department of Basic Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Jing Su
- Heilongjiang Province Animal Epidemic Prevention and Control Center, Harbin, Heilongjiang 150069, P.R. China
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33
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Yang CT, Lai ZZ, Zheng ZH, Kang JM, Xian M, Wang RY, Shi K, Meng FH, Li X, Chen L, Zhang H. A novel pH-controlled hydrogen sulfide donor protects gastric mucosa from aspirin-induced injury. J Cell Mol Med 2017; 21:2441-2451. [PMID: 28387464 PMCID: PMC5618702 DOI: 10.1111/jcmm.13166] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/16/2017] [Indexed: 12/19/2022] Open
Abstract
Hydrogen sulphide (H2S) serves as a vital gastric mucosal defence under acid condition. Non‐steroidal anti‐inflammatory drugs (NSAIDs) are among widely prescribed medications with effects of antipyresis, analgesia and anti‐inflammation. However, their inappropriate use causes gastric lesions and endogenous H2S deficiency. In this work, we reported the roles of a novel pH‐controlled H2S donor (JK‐1) in NSAID‐related gastric lesions. We found that JK‐1 could release H2S under mild acidic pH and increase solution pH value. Intragastrical administration of aspirin (ASP), one of NSAIDs, to mice elicited significant gastric lesions, evidenced by mucosal festering and bleeding. It also led to infiltration of inflammatory cells and resultant releases of IL‐6 and TNF‐α, as well as oxidative injury including myeloperoxidase (MPO) induction and GSH depletion. In addition, the ASP administration statistically inhibited H2S generation in gastric mucosa, while up‐regulated cyclooxygenase (COX)‐2 and cystathionine gamma lyase (CSE) expression. Importantly, these adverse effects of ASP were prevented by the intragastrical pre‐administration of JK‐1. However, JK‐1 alone did not markedly alter the property of mouse stomachs. Furthermore, in vitro cellular experiments showed the exposure of gastric mucosal epithelial (GES‐1) cells to HClO, imitating MPO‐driven oxidative injury, decreased cell viability, increased apoptotic rate and damaged mitochondrial membrane potential, which were reversed by pre‐treatment with JK‐1. In conclusion, JK‐1 was proved to be an acid‐sensitive H2S donor and could attenuate ASP‐related gastric lesions through reconstruction of endogenous gastric defence. This work indicates the possible treatment of adverse effects of NSAIDs with pH‐controlled H2S donors in the future.
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Affiliation(s)
- Chun-Tao Yang
- Affiliated Cancer Hospital & Institute, Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Zhen-Zhen Lai
- NanShan School of the First Clinical College, Guangzhou Medical University, Guangzhou, 510120, China
| | - Ze-Hang Zheng
- Affiliated Cancer Hospital & Institute, Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Jian-Ming Kang
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Rui-Yu Wang
- Affiliated Cancer Hospital & Institute, Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Kun Shi
- Affiliated Cancer Hospital & Institute, Guangzhou Medical University, Guangzhou, China.,Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Fu-Hui Meng
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xiang Li
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Li Chen
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Hui Zhang
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.,Quality Control Section of Academic Affairs, Guangzhou Medical University, Guangzhou, China
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34
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Bjørn-Yoshimoto WE, Underhill SM. The importance of the excitatory amino acid transporter 3 (EAAT3). Neurochem Int 2016; 98:4-18. [PMID: 27233497 DOI: 10.1016/j.neuint.2016.05.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 05/09/2016] [Accepted: 05/17/2016] [Indexed: 12/21/2022]
Abstract
The neuronal excitatory amino acid transporter 3 (EAAT3) is fairly ubiquitously expressed in the brain, though it does not necessarily maintain the same function everywhere. It is important in maintaining low local concentrations of glutamate, where its predominant post-synaptic localization can buffer nearby glutamate receptors and modulate excitatory neurotransmission and synaptic plasticity. It is also the main neuronal cysteine uptake system acting as the rate-limiting factor for the synthesis of glutathione, a potent antioxidant, in EAAT3 expressing neurons, while on GABAergic neurons, it is important in supplying glutamate as a precursor for GABA synthesis. Several diseases implicate EAAT3, and modulation of this transporter could prove a useful therapeutic approach. Regulation of EAAT3 could be targeted at several points for functional modulation, including the level of transcription, trafficking and direct pharmacological modulation, and indeed, compounds and experimental treatments have been identified that regulate EAAT3 function at different stages, which together with observations of EAAT3 regulation in patients is giving us insight into the endogenous function of this transporter, as well as the consequences of altered function. This review summarizes work done on elucidating the role and regulation of EAAT3.
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Affiliation(s)
- Walden E Bjørn-Yoshimoto
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 København Ø, Denmark
| | - Suzanne M Underhill
- National Institute of Mental Health, National Institutes of Health, 35 Convent Drive Room 3A: 210 MSC3742, Bethesda, MD 20892-3742, USA.
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35
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Ganapathy K, Datta I, Sowmithra S, Joshi P, Bhonde R. Influence of 6-Hydroxydopamine Toxicity on α-Synuclein Phosphorylation, Resting Vesicle Expression, and Vesicular Dopamine Release. J Cell Biochem 2016; 117:2719-2736. [DOI: 10.1002/jcb.25570] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 04/07/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Kavina Ganapathy
- School of Regenerative Medicine; Manipal University; Bengaluru Karnataka India
| | - Indrani Datta
- Department of Biophysics; National Institute of Mental Health and Neurosciences, an Institute of National Importance; Bengaluru Karnataka India
| | - Sowmithra Sowmithra
- Department of Biophysics; National Institute of Mental Health and Neurosciences, an Institute of National Importance; Bengaluru Karnataka India
| | - Preeti Joshi
- Department of Biophysics; National Institute of Mental Health and Neurosciences, an Institute of National Importance; Bengaluru Karnataka India
| | - Ramesh Bhonde
- School of Regenerative Medicine; Manipal University; Bengaluru Karnataka India
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36
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Patel B, Das SK, Das S, Das L, Patri M. Neonatal exposure to benzo[a]pyrene induces oxidative stress causing altered hippocampal cytomorphometry and behavior during early adolescence period of male Wistar rats. Int J Dev Neurosci 2016; 50:7-15. [DOI: 10.1016/j.ijdevneu.2016.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/10/2016] [Accepted: 01/26/2016] [Indexed: 12/22/2022] Open
Affiliation(s)
- Bhupesh Patel
- Department of ZoologySchool of Life SciencesRavenshaw UniversityOdishaIndia
| | - Saroj Kumar Das
- Department of ZoologySchool of Life SciencesRavenshaw UniversityOdishaIndia
- Defence Institute of High Altitude Research, DRDOJammu and KashmirIndia
| | - Swagatika Das
- Department of ZoologySchool of Life SciencesRavenshaw UniversityOdishaIndia
| | - Lipsa Das
- Department of ZoologySchool of Life SciencesRavenshaw UniversityOdishaIndia
| | - Manorama Patri
- Department of ZoologySchool of Life SciencesRavenshaw UniversityOdishaIndia
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37
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Takahashi S, Hisatsune A, Kurauchi Y, Seki T, Katsuki H. Insulin-like growth factor 1 specifically up-regulates expression of modifier subunit of glutamate-cysteine ligase and enhances glutathione synthesis in SH-SY5Y cells. Eur J Pharmacol 2016; 771:99-106. [DOI: 10.1016/j.ejphar.2015.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 12/01/2015] [Accepted: 12/07/2015] [Indexed: 11/27/2022]
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38
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Aoyama K, Nakaki T. Glutathione in Cellular Redox Homeostasis: Association with the Excitatory Amino Acid Carrier 1 (EAAC1). Molecules 2015; 20:8742-58. [PMID: 26007177 PMCID: PMC6272787 DOI: 10.3390/molecules20058742] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/11/2015] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) are by-products of the cellular metabolism of oxygen consumption, produced mainly in the mitochondria. ROS are known to be highly reactive ions or free radicals containing oxygen that impair redox homeostasis and cellular functions, leading to cell death. Under physiological conditions, a variety of antioxidant systems scavenge ROS to maintain the intracellular redox homeostasis and normal cellular functions. This review focuses on the antioxidant system’s roles in maintaining redox homeostasis. Especially, glutathione (GSH) is the most important thiol-containing molecule, as it functions as a redox buffer, antioxidant, and enzyme cofactor against oxidative stress. In the brain, dysfunction of GSH synthesis leading to GSH depletion exacerbates oxidative stress, which is linked to a pathogenesis of aging-related neurodegenerative diseases. Excitatory amino acid carrier 1 (EAAC1) plays a pivotal role in neuronal GSH synthesis. The regulatory mechanism of EAAC1 is also discussed.
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Affiliation(s)
| | - Toshio Nakaki
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-3-3964-3793; Fax: +81-3-3964-0602
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39
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Sha S, Xu J, Lu ZH, Hong J, Qu WJ, Zhou JW, Chen L. Lack of JWA Enhances Neurogenesis and Long-Term Potentiation in Hippocampal Dentate Gyrus Leading to Spatial Cognitive Potentiation. Mol Neurobiol 2014; 53:355-368. [PMID: 25432888 DOI: 10.1007/s12035-014-9010-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 11/14/2014] [Indexed: 01/28/2023]
Abstract
JWA (Arl6ip5), a homologous gene of glutamate-transporter-associated protein 3-18 (GTRAP3-18) and addicsin, is highly expressed in hippocampus. We generated systemic and neuronal JWA knockout (JWA-KO and JWA-nKO) mice to investigate the influence of JWA deficiency on spatial cognitive performance, process of neurogenesis, and induction of long-term potentiation (LTP) in hippocampal dentate gyrus (DG). In comparison with wild-type (WT) mice and JWA (loxP/loxP) (control of JWA-nKO) mice, 8-week-old JWA-KO mice and JWA-nKO mice showed spatial cognitive potentiation as assessed by Morris water maze test. In hippocampal DG of JWA-nKO mice, either survival and migration or neurite growth of newborn neurons were significantly enhanced without the changes in proliferation and differentiation of stem cells. In addition, the increase of LTP amplitude and the decline of LTP threshold were observed in DG, but not in CA1 region, of JWA-nKO mice compared to control mice. The levels of hippocampal FAK, Akt, and mTOR phosphorylation in JWA-nKO mice were higher than those in control mice. The PI3K or FAK inhibitor could abolish the enhanced neurogenesis and LTP induction in JWA-nKO mice, which was accompanied by disappearance of the spatial cognitive potentiation. The treatment of JWA-nKO mice with 3'-azido-3'-deoxythymidine (AZT), a telomerase inhibitor, suppressed not only the enhanced neurogenesis but also the enhanced LTP induction in DG, but it did not affect the LTP induction in CA1 region. The results suggest that the JWA deficiency through cascading FAK-PI3K-Akt-mTOR pathway increases the newborn neurons and enhances the LTP induction in hippocampal DG, which leads to the spatial cognitive potentiation.
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Affiliation(s)
- Sha Sha
- Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, 210029, China
- Department of Physiology, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China
| | - Jin Xu
- Department of Molecular Cell Biology and Toxicology, School of Public Health, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China
| | - Zi-Hong Lu
- Department of Physiology, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China
| | - Juan Hong
- Department of Physiology, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China
| | - Wei-Jun Qu
- Department of Physiology, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China
| | - Jian-Wei Zhou
- Department of Molecular Cell Biology and Toxicology, School of Public Health, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China.
| | - Ling Chen
- Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, 210029, China.
- Department of Physiology, Nanjing Medical University, Hanzhong Road 140, Nanjing, Jiangsu, 210029, China.
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40
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Lane MC, Jackson JG, Krizman EN, Rothstein JD, Porter BE, Robinson MB. Genetic deletion of the neuronal glutamate transporter, EAAC1, results in decreased neuronal death after pilocarpine-induced status epilepticus. Neurochem Int 2013; 73:152-8. [PMID: 24334055 DOI: 10.1016/j.neuint.2013.11.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 11/26/2013] [Accepted: 11/28/2013] [Indexed: 11/24/2022]
Abstract
Excitatory amino acid carrier 1 (EAAC1 also called EAAT3) is a Na(+)-dependent glutamate transporter expressed by both glutamatergic and GABAergic neurons. It provides precursors for the syntheses of glutathione and GABA and contributes to the clearance of synaptically released glutamate. Mice deleted of EAAC1 are more susceptible to neurodegeneration in models of ischemia, Parkinson's disease, and aging. Antisense knock-down of EAAC1 causes an absence seizure-like phenotype. Additionally, EAAC1 expression increases after chemonvulsant-induced seizures in rodent models and in tissue specimens from patients with refractory epilepsy. The goal of the present study was to determine if the absence of EAAC1 affects the sensitivity of mice to seizure-induced cell death. A chemoconvulsant dose of pilocarpine was administered to EAAC1(-/-) mice and to wild-type controls. Although EAAC1(-/-) mice experienced increased latency to seizure onset, no significant differences in behavioral seizure severity or mortality were observed. We examined EAAC1 immunofluorescence 24h after pilocarpine administration and confirmed that pilocarpine causes an increase in EAAC1 protein. Forty-eight hours after induction of seizures, cell death was measured in hippocampus and in cortex using Fluoro-Jade C. Surprisingly, there was ∼2-fold more cell death in area CA1 of wild-type mice than in the corresponding regions of the EAAC1(-/-) mice. Together, these studies indicate that absence of EAAC1 results in either a decrease in pilocarpine-induced seizures that is not detectable by behavioral criteria (surprising, since EAAC1 provides glutamate for GABA synthesis), or that the absence of EAAC1 results in less pilocarpine/seizure-induced cell death, possible explanations as discussed.
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Affiliation(s)
- Meredith C Lane
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Joshua G Jackson
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elizabeth N Krizman
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jeffery D Rothstein
- Department of Neurology and Neuroscience, Johns Hopkins University, Brain Sciences Institute, Baltimore, MD 21205, USA
| | - Brenda E Porter
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Neurology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Michael B Robinson
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Pharmacology, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA 19104, USA.
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41
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Aoyama K, Nakaki T. Impaired glutathione synthesis in neurodegeneration. Int J Mol Sci 2013; 14:21021-44. [PMID: 24145751 PMCID: PMC3821656 DOI: 10.3390/ijms141021021] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 09/30/2013] [Accepted: 10/01/2013] [Indexed: 12/20/2022] Open
Abstract
Glutathione (GSH) was discovered in yeast cells in 1888. Studies of GSH in mammalian cells before the 1980s focused exclusively on its function for the detoxication of xenobiotics or for drug metabolism in the liver, in which GSH is present at its highest concentration in the body. Increasing evidence has demonstrated other important roles of GSH in the brain, not only for the detoxication of xenobiotics but also for antioxidant defense and the regulation of intracellular redox homeostasis. GSH also regulates cell signaling, protein function, gene expression, and cell differentiation/proliferation in the brain. Clinically, inborn errors in GSH-related enzymes are very rare, but disorders of GSH metabolism are common in major neurodegenerative diseases showing GSH depletion and increased levels of oxidative stress in the brain. GSH depletion would precipitate oxidative damage in the brain, leading to neurodegenerative diseases. This review focuses on the significance of GSH function, the synthesis of GSH and its metabolism, and clinical disorders of GSH metabolism. A potential approach to increase brain GSH levels against neurodegeneration is also discussed.
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Affiliation(s)
- Koji Aoyama
- Department of Pharmacology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi, Tokyo 173-8605, Japan.
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