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Alymbaeva D, Szabo C, Jocsak G, Bartha T, Zsarnovszky A, Kovago C, Ondrasovicova S, Kiss DS. Analysis of arsenic-modulated expression of hypothalamic estrogen receptor, thyroid receptor, and peroxisome proliferator-activated receptor gamma mRNA and simultaneous mitochondrial morphology and respiration rates in the mouse. PLoS One 2024; 19:e0303528. [PMID: 38753618 PMCID: PMC11098319 DOI: 10.1371/journal.pone.0303528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/26/2024] [Indexed: 05/18/2024] Open
Abstract
Arsenic has been identified as an environmental toxicant acting through various mechanisms, including the disruption of endocrine pathways. The present study assessed the ability of a single intraperitoneal injection of arsenic, to modify the mRNA expression levels of estrogen- and thyroid hormone receptors (ERα,β; TRα,β) and peroxisome proliferator-activated receptor gamma (PPARγ) in hypothalamic tissue homogenates of prepubertal mice in vivo. Mitochondrial respiration (MRR) was also measured, and the corresponding mitochondrial ultrastructure was analyzed. Results show that ERα,β, and TRα expression was significantly increased by arsenic, in all concentrations examined. In contrast, TRβ and PPARγ remained unaffected after arsenic injection. Arsenic-induced dose-dependent changes in state 4 mitochondrial respiration (St4). Mitochondrial morphology was affected by arsenic in that the 5 mg dose increased the size but decreased the number of mitochondria in agouti-related protein- (AgRP), while increasing the size without affecting the number of mitochondria in pro-opiomelanocortin (POMC) neurons. Arsenic also increased the size of the mitochondrial matrix per host mitochondrion. Complex analysis of dose-dependent response patterns between receptor mRNA, mitochondrial morphology, and mitochondrial respiration in the neuroendocrine hypothalamus suggests that instant arsenic effects on receptor mRNAs may not be directly reflected in St3-4 values, however, mitochondrial dynamics is affected, which predicts more pronounced effects in hypothalamus-regulated homeostatic processes after long-term arsenic exposure.
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Affiliation(s)
- Daiana Alymbaeva
- Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
| | - Csaba Szabo
- Department of Animal Physiology and Health, Hungarian University of Agricultural and Life Sciences, Godollo, Hungary
| | - Gergely Jocsak
- Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
| | - Tibor Bartha
- Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
| | - Attila Zsarnovszky
- Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
- Department of Animal Physiology and Health, Hungarian University of Agricultural and Life Sciences, Godollo, Hungary
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Department of Animal Physiology and Health, Institute of Physiology and Nutrition, Hungarian University of Agricultural and Life Sciences, Kaposvar, Hungary
| | - Csaba Kovago
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
| | - Silvia Ondrasovicova
- Department of Biology and Physiology, University of Veterinary Medicine and Pharmacy in Košice, Košice, Slovakia
| | - David Sandor Kiss
- Department of Physiology and Biochemistry, University of Veterinary Medicine, Budapest, Hungary
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Zhang M, Qin H, Xiang L, An L, Zhang X, Li K, Wu K, Fei X, Fan W, Xu X, Xu P, Wu Y, Mu D. Camellia sinensis polysaccharide attenuates inflammatory responses via the ROS-mediated pathway by endocytosis. Int J Biol Macromol 2024; 267:131674. [PMID: 38641285 DOI: 10.1016/j.ijbiomac.2024.131674] [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: 08/14/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Polysaccharide CSTPs extracted from Camellia sinensis tea-leaves possessed unique against oxidative damage by scavenging ROS. Herein, acid tea polysaccharide CSTPs-2 with tightly packed molecular structure was isolated, purified and characterized in this research. Furthermore, the effects of CSTPs-2 on ROS-involved inflammatory responses and its underlying mechanisms were investigated. The results suggest that CSTPs-2 dramatically reduced the inflammatory cytokines overexpression and LPS-stimulated cell damage. CSTPs-2 could trigger the dephosphorylation of downstream AKT/MAPK/NF-κB signaling proteins and inhibit nuclear transfer of p-NF-κB to regulate the synthesis and release of inflammatory mediators in LPS-stimulated cells by ROS scavenging. Importantly, the impact of CSTPs-2 in downregulating pro-inflammatory cytokines and mitigating ROS overproduction is associated with clathrin- or caveolae-mediated endocytosis uptake mechanisms, rather than TLR-4 receptor-mediated endocytosis. This study presents a novel perspective for investigating the cellular uptake mechanism of polysaccharides in the context of anti-inflammatory mechanisms.
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Affiliation(s)
- Mingzhu Zhang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Huaguang Qin
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Lijun Xiang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Lujing An
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xiaoling Zhang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Kexin Li
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Kai Wu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xinyao Fei
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Wenhui Fan
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xinyun Xu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Pengfei Xu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Yan Wu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China.
| | - Dan Mu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China.
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Wadgaonkar P, Wang Z, Chen F. Endoplasmic reticulum stress responses and epigenetic alterations in arsenic carcinogenesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 347:123565. [PMID: 38373625 DOI: 10.1016/j.envpol.2024.123565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/21/2023] [Accepted: 02/11/2024] [Indexed: 02/21/2024]
Abstract
Arsenic is a well-known human carcinogen whose environmental exposure via drinking water, food, and air impacts millions of people across the globe. Various mechanisms of arsenic carcinogenesis have been identified, ranging from damage caused by excessive production of free radicals and epigenetic alterations to the generation of cancer stem cells. A growing body of evidence supports the critical involvement of the endoplasmic stress-activated unfolded protein response (UPR) in promoting as well as suppressing cancer development/progression. Various in vitro and in vivo models have also demonstrated that arsenic induces the UPR via activation of the PERK, IRE1α, and ATF6 proteins. In this review, we discuss the mechanisms of arsenic-induced endoplasmic reticulum stress and the role of each UPR pathway in the various cancer types with a focus on the epigenetic regulation and function of the ATF6 protein. The importance of UPR in arsenic carcinogenesis and cancer stem cells is a relatively new area of research that requires additional investigations via various omics-based and computational tools. These approaches will provide interesting insights into the mechanisms of arsenic-induced cancers for prospective target identification and development of novel anti-cancer therapies.
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Affiliation(s)
- Priya Wadgaonkar
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, 259 Mack Avenue, Detroit, MI, 48201, USA
| | - Ziwei Wang
- Stony Brook Cancer Center, Department of Pathology, Renaissance School of Medicine, Stony Brook University, Lauterbur Drive, Stony Brook, NY, 11794, USA
| | - Fei Chen
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, 259 Mack Avenue, Detroit, MI, 48201, USA; Stony Brook Cancer Center, Department of Pathology, Renaissance School of Medicine, Stony Brook University, Lauterbur Drive, Stony Brook, NY, 11794, USA.
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4
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Jahan S, Ansari UA, Srivastava AK, Aldosari S, Alabdallat NG, Siddiqui AJ, Khan A, Albadrani HM, Sarkar S, Khan B, Adnan M, Pant AB. A protein-miRNA biomic analysis approach to explore neuroprotective potential of nobiletin in human neural progenitor cells (hNPCs). Front Pharmacol 2024; 15:1343569. [PMID: 38348393 PMCID: PMC10860404 DOI: 10.3389/fphar.2024.1343569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/04/2024] [Indexed: 02/15/2024] Open
Abstract
Chemical-induced neurotoxicity is increasingly recognized to accelerate the development of neurodegenerative disorders (NDs), which pose an increasing health burden to society. Attempts are being made to develop drugs that can cross the blood-brain barrier and have minimal or no side effects. Nobiletin (NOB), a polymethoxylated flavonoid with anti-oxidative and anti-inflammatory effects, has been demonstrated to be a promising compound to treat a variety of NDs. Here, we investigated the potential role of NOB in sodium arsenate (NA)-induced deregulated miRNAs and target proteins in human neural progenitor cells (hNPCs). The proteomics and microRNA (miRNA) profiling was done for different groups, namely, unexposed control, NA-exposed, NA + NOB, and NOB groups. Following the correlation analysis between deregulated miRNAs and target proteins, RT-PCR analysis was used to validate the selected genes. The proteomic analysis showed that significantly deregulated proteins were associated with neurodegeneration pathways, response to oxidative stress, RNA processing, DNA repair, and apoptotic process following exposure to NA. The OpenArray analysis confirmed that NA exposure significantly altered miRNAs that regulate P53 signaling, Wnt signaling, cell death, and cell cycle pathways. The RT-PCR validation studies concur with proteomic data as marker genes associated with autophagy and apoptosis (HO-1, SQSTM1, LC-3, Cas3, Apaf1, HSP70, and SNCA1) were altered following NA exposure. It was observed that the treatment of NOB significantly restored the deregulated miRNAs and proteins to their basal levels. Hence, it may be considered one of its neuroprotective mechanisms. Together, the findings are promising to demonstrate the potential applicability of NOB as a neuroprotectant against chemical-induced neurotoxicity.
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Affiliation(s)
- Sadaf Jahan
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, 11952, Saudi Arabia
- Health and Basic Sciences Research Center, Majmaah University, 11952 Majmaah, Saudi Arabia
| | - Uzair Ahmad Ansari
- Developmental Toxicology Laboratory, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, P.O. Box No. 80, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ankur Kumar Srivastava
- Developmental Toxicology Laboratory, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, P.O. Box No. 80, Lucknow 226001, Uttar Pradesh, India
| | - Sahar Aldosari
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, 11952, Saudi Arabia
- Health and Basic Sciences Research Center, Majmaah University, 11952 Majmaah, Saudi Arabia
| | - Nessrin Ghazi Alabdallat
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, 11952, Saudi Arabia
- Health and Basic Sciences Research Center, Majmaah University, 11952 Majmaah, Saudi Arabia
| | - Arif Jamal Siddiqui
- Department of Biology, College of Science, University of Hail, Hail, Saudi Arabia
| | - Andleeb Khan
- Department of Biosciences, Faculty of Science, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - Hind Muteb Albadrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province 34212, Saudi Arabia
| | - Sana Sarkar
- Developmental Toxicology Laboratory, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, P.O. Box No. 80, Lucknow 226001, Uttar Pradesh, India
| | - Bushra Khan
- Developmental Toxicology Laboratory, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, P.O. Box No. 80, Lucknow 226001, Uttar Pradesh, India
| | - Mohd Adnan
- Department of Biology, College of Science, University of Hail, Hail, Saudi Arabia
| | - Aditya Bhushan Pant
- Developmental Toxicology Laboratory, Systems Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhavan, 31, Mahatma Gandhi Marg, P.O. Box No. 80, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Asano S, Yamazaki K, Mori K, Hashimoto Y, Kawana S, Sato H, Naito H, Shikano K, Sogame Y, Kashimura M. C/EBP homogenous protein-induced Apoptosis in Endoplasmic Reticulum stress has been implicated in Kikuchi-Fujimoto Disease. J Clin Exp Hematop 2023; 63:270-274. [PMID: 37899238 PMCID: PMC10861369 DOI: 10.3960/jslrt.23034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/27/2023] [Accepted: 08/31/2023] [Indexed: 10/31/2023] Open
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Zhang B, Liu P, Sheng H, Guo Y, Han Y, Suo L, Yuan Q. New Insight into the Potential Protective Function of Sulforaphene against ROS-Mediated Oxidative Stress Damage In Vitro and In Vivo. Int J Mol Sci 2023; 24:13129. [PMID: 37685936 PMCID: PMC10487408 DOI: 10.3390/ijms241713129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
Sulforaphene (SFE) is a kind of isothiocyanate isolated from radish seeds that can prevent free-radical-induced diseases. In this study, we investigated the protective effect of SFE on oxidative-stress-induced damage and its molecular mechanism in vitro and in vivo. The results of cell experiments show that SFE can alleviate D-gal-induced cytotoxicity, promote cell cycle transformation by inhibiting the production of reactive oxygen species (ROS) and cell apoptosis, and show a protective effect on cells with H2O2-induced oxidative damage. Furthermore, the results of mice experiments show that SFE can alleviate D-galactose-induced kidney damage by inhibiting ROS, malondialdehyde (MDA), and 4-hydroxyalkenals (4-HNE) production; protect the kidney against oxidative stress-induced damage by increasing antioxidant enzyme activity and upregulating the Nrf2 signaling pathway; and inhibit the activity of pro-inflammatory factors by downregulating the expression of Toll-like receptor 4 (TLR4)-mediated inflammatory response. In conclusion, this research shows that SFE has antioxidant effects, providing a new perspective for studying the anti-aging properties of natural compounds.
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Affiliation(s)
| | | | | | | | | | | | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China; (B.Z.); (P.L.); (H.S.); (Y.G.); (Y.H.); (L.S.)
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7
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Zhang M, Zhang Z, Lou Q, Zhang X, Yin F, Yin Y, Xu H, Zhang Y, Fan C, Gao Y, Yang Y. SIRT1/P53 pathway is involved in the Arsenic induced aerobic glycolysis in hepatocytes L-02 cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27570-5. [PMID: 37195614 DOI: 10.1007/s11356-023-27570-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 05/06/2023] [Indexed: 05/18/2023]
Abstract
Arsenic is a known human carcinogen. Low doses of arsenic can induce cell proliferation, but the mechanism remains elusive. Aerobic glycolysis, also known as the Warburg effect, is one of the characteristics of tumour cells and rapidly proliferating cells. P53 is a tumour suppressor gene that has been shown to be a negative regulator of aerobic glycolysis. SIRT1 is a deacetylase that inhibits the function of P53. In this study, we found that P53 was involved in low dose of arsenic-induced aerobic glycolysis through regulating HK2 expression in L-02 cells. Moreover, SIRT1 not only inhibited P53 expression but also decreased the acetylation level of P53-K382 in arsenic-treated L-02 cells. Meanwhile, SIRT1 influenced the expression of HK2 and LDHA, which then promoted arsenic-induced glycolysis in L-02 cells. Therefore, our study demonstrated that the SIRT1/P53 pathway is involved in arsenic-induced glycolysis, thereby promoting cell proliferation, which provides theoretical basis for enriching the mechanism of arsenic carcinogenesis.
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Affiliation(s)
- Meichen Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Zaihong Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Qun Lou
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Xin Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Fanshuo Yin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Yunyi Yin
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Haili Xu
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Ying Zhang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Chenlu Fan
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Yanhui Gao
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China
| | - Yanmei Yang
- Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, 150081, Heilongjiang Province, China.
- Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province and Ministry of Health (23618504), Harbin, 150081, Heilongjiang, China.
- Heilongjiang Provincial Key Lab of Trace Elements and Human Health, Harbin, 150081, Heilongjiang, China.
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Zhang C, Li Y, Yu H, Ye L, Li T, Zhang X, Wang C, Li P, Ji H, Gao Q, Dong S. Nanoplastics promote arsenic-induced ROS accumulation, mitochondrial damage and disturbances in neurotransmitter metabolism of zebrafish (Danio rerio). THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:161005. [PMID: 36539083 DOI: 10.1016/j.scitotenv.2022.161005] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
As a carrier, nanoplastics (NPs) can adsorb other toxic substances and thus modify their biological toxicity. Numerous studies have investigated the neurotoxic of high concentrations of arsenic (As, 2.83 mg/L-5 mg/L). However, it is still unknown whether the relatively low environmentally relevant concentrations of As (200 μg/L) can damage the structure and function of fish brains with the presence of NPs. In this study, zebrafish were exposed to polystyrene NPs, As and their mixture for 30 days respectively. Firstly, we found that the presence of NPs promoted the accumulation of As in zebrafish brains. Thereby the co-exposure of NPs and As further promoted the production of reactive oxygen species (ROS) in zebrafish brains compared with the single exposure of NPs or As, resulting in severe oxidative stress. Moreover, accumulated ROS directly damaged the mitochondrial membrane and mtDNA in zebrafish brains. Moreover, the mitochondrial damage was further aggravated due to inhibited mitochondrial fusion and activated mitochondrial division and mitophagy. Ultimately, the co-exposure led to mitochondrial damage in the zebrafish brain. Damaged mitochondria may not meet the high energy metabolic requirement for neuronal function. As a result, the normal function of nerve cells was adversely affected and eventually cell apoptosis may occur. Besides, the co-exposure caused more significant structural alterations in zebrafish brain tissue. Finally, the co-exposure of NPs and As caused abnormal biosynthesis and degradation of dopamine and acetylcholine. These resulted in decreased dopamine levels and increased acetylcholine levels in zebrafish brains. In conclusion, the presence of NPs promoted the accumulation of As, thereby inducing severe oxidative stress, which caused structural alterations and mitochondrial damage in the zebrafish brain, thus disordering neuromodulation, which may ultimately cause neurological dysfunction in zebrafish. This study will provide a risk assessment for evaluating the biotoxicity of NPs and As to fish and even other animals.
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Affiliation(s)
- Cheng Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yanyao Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Haibo Yu
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Limin Ye
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Tian Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xiaotian Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Chi Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Pengju Li
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Qinfeng Gao
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao 266100, China
| | - Shuanglin Dong
- Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao 266100, China
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9
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Lin JW, Fu SC, Liu JM, Liu SH, Lee KI, Fang KM, Hsu RJ, Huang CF, Liu KM, Chang KC, Su CC, Chen YW. Chlorpyrifos induces neuronal cell death via both oxidative stress and Akt activation downstream-regulated CHOP-triggered apoptotic pathways. Toxicol In Vitro 2023; 86:105483. [DOI: 10.1016/j.tiv.2022.105483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/18/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
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10
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Wisessaowapak C, Worasuttayangkurn L, Maliphol K, Nakareangrit W, Cholpraipimolrat W, Nookabkaew S, Watcharasit P, Satayavivad J. The 28-day repeated arsenic exposure increases tau phosphorylation in the rat brain. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 95:103974. [PMID: 36089238 DOI: 10.1016/j.etap.2022.103974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 05/10/2023]
Abstract
Herein, we examined whether prolonged arsenic exposure altered tau phosphorylation in the brain of Sprague Dawley rats expressing endogenous wild-type tau. The results showed that daily intraperitoneal injections of 2.5 mg/kg BW sodium arsenite over 28 days caused arsenic accumulation in the rat brain. Interestingly, we found an increase in tau phosphorylation at the Tau 1 region (189-207) and S202 in the hippocampus, S404 in the cerebral cortex, and S396 and S404 in the cerebellum of arsenic-treated rats. Additionally, arsenic increased active ERK1/2 phosphorylation at T202/Y204 in the hippocampus, cerebral cortex, and cerebellum. Meanwhile, we detected increasing active JNK phosphorylation at T183/Y185 in the hippocampus and cerebellum. Moreover, p35, a neuron-specific activator of CDK5, was also elevated in the cerebellum of arsenic-treated rats, suggesting that CDK5 activity may be increased by arsenic. These results suggested that arsenic may induce tau phosphorylation through the activation of tau kinases, ERK1/2, JNK, and CDK5. Together, the findings from this study demonstrated that prolonged arsenic exposure is implicated in neurodegeneration by promoting tau phosphorylation in the rat brain and points toward a possible prevention strategy against neurodegeneration induced by environmental arsenic exposure.
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Affiliation(s)
| | | | | | - Watanyoo Nakareangrit
- Translational Research Unit, Chulabhorn Research Institute, 54 KamphaengPhet6 Rd, Bangkok 10210 Thailand
| | | | - Sumontha Nookabkaew
- Laboratory of Pharmacology, Chulabhorn Research Institute, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand
| | - Piyajit Watcharasit
- Laboratory of Pharmacology, Chulabhorn Research Institute, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand; Chulabhorn Graduate Institute, 906 KamphaengPhet6 Rd, Bangkok, 10210 Thailand.
| | - Jutamaad Satayavivad
- Laboratory of Pharmacology, Chulabhorn Research Institute, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, Thailand; Chulabhorn Graduate Institute, 906 KamphaengPhet6 Rd, Bangkok, 10210 Thailand
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11
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Shekh R, Tiwari RK, Ahmad A, Ahmad I, Alabdallah NM, Saeed M, Ansari IA, Mishra A, Ashfaque M, Bajpai P. Ethanolic extract of Coleus aromaticus leaves impedes the proliferation and instigates apoptotic cell death in liver cancer HepG2 cells through repressing JAK/STAT cascade. J Food Biochem 2022; 46:e14368. [PMID: 35945689 DOI: 10.1111/jfbc.14368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/14/2022] [Accepted: 06/21/2022] [Indexed: 12/24/2022]
Abstract
Liver cancer or hepatocellular carcinoma (HCC) has become a leading cause for cancer burden across the globe, and incidences have tripled since the last two decades. Poor diagnosis of primary liver cancer and limited treatment strategies aggravate the challenges. Researchers globally have shown a steep inclination toward the exploration of plant-based compounds for their nutraceutical and anticancer potential to fit into the role of novel chemotherapeutics. Coleus aromaticus is a well-known culinary herb that earlier has been reported for several medicinal attributes. The current investigation deals with exploring the anticancer potential of ethanolic leaf extract of C. aromaticus (CoL-EtOH) against hepatocellular carcinoma HepG2 cell line. The observations made it evident that CoL-EtOH extract impeded the viability of HepG2 at 400 μg/ml (p < .01). Additionally, the extract also succeeded in escalating ROS production (p < .01) which aided dissipation of mitochondrial membrane potential and disruption of nuclear morphology. CoL-EtOH further activated caspase-8, -9, and -3 which was reaffirmed by increase in apoptosis at 400 μg/ml (p < .01). Moreover, post treatment with CaLEt-OH extract significantly reduced the expression of JAK-1 & STAT-3 genes (p < .01) along with regulated expression of Mcl1, Bcl-2, cyclinD1, p21, and p27 within HepG2 cells. This evidence portrays the promising anticancer potential of CoL-EtOH projecting it as a novel chemotherapeutic agent against HCC. PRACTICAL APPLICATIONS: The herb Coleus aromaticus belonging to Lamiaceae family and Coleus genus is known by various names in different regions of the world and several language-specific vernacular names. The herb has been used in therapeutic and medicinal applications as well as in culinary preparations. Various attributes of the nutritional strength and functional characteristics of the leaves in terms of carotenoids, minerals, phenols, dietary fiber, and antioxidant activity have been reported by several researchers. Carvacrol and thymol are majorly found in the plant, while chlorogenic acid and rosmarinic acid etc. as the phenolic components. The herb has been used in therapeutic and medicinal implications as well as in culinary preparations.
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Affiliation(s)
- Rafia Shekh
- Department of Biosciences, Integral University, Lucknow, India
| | | | - Afza Ahmad
- Department of Biosciences, Integral University, Lucknow, India
| | - Irfan Ahmad
- Department of Pharmacy, Integral University, Lucknow, India
| | - Nadiyah M Alabdallah
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Mohd Saeed
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.,Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | | | | | | | - Preeti Bajpai
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.,Department of Zoology, Mahatma Gandhi Central University, Motihari-East Champaran, Motihari, India
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12
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Zhang JJ, Wang S, Gao XF, Hou YY, Hu JN, Zhang JT, Hou JG, Wang Z, Li X, Li W. Arabinogalactan derived from Larix gmelinii (Rupr.) Kuzen. Alleviates cisplatin-induced acute intestinal injury in vitro and in vivo through IRE1α/JNK axis mediated apoptotic signaling pathways. Int J Biol Macromol 2022; 209:871-884. [PMID: 35439476 DOI: 10.1016/j.ijbiomac.2022.04.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/21/2022] [Accepted: 04/09/2022] [Indexed: 11/20/2022]
Abstract
Many dietary polysaccharides have been shown to protect against various harmful external stimuli by protecting the integrity of the intestinal barrier. Arabinogalactan (AG) is a high molecular weight polysaccharide composed of arabinose and galactose, which has good immunomodulatory, antioxidant and intestinal conditioning activities. Gastrointestinal injury caused by cisplatin (CP) is an inevitable damage during CP chemotherapy. This research explored the ameliorative effect of AG on cisplatin-induced intestinal toxicity and its possible molecular targets and mechanisms. The results showed that AG (200, 400 mg/kg) could significantly reverse the intestinal histopathological changes and oxidative stress injury caused by CP. Meantime, AG could target the IRE1α/JNK axis to inhibit the expression of apoptosis-related proteins and block the apoptotic cascade, thus reducing intestinal damage. In vitro, AG (10, 20, and 40 μg/mL) could regulate the IRE1α/JNK axis, inhibit apoptosis, and restore the antioxidant defense system damaged by CP to play a protective role in the intestine. In addition, 4-phenylbutyrate (4-PBA), a specific inhibitor of endoplasmic reticulum stress, was used to verify that AG also affected protein expression levels by regulating the IRE1α/JNK pathway-mediated endoplasmic reticulum stress signaling pathway, thereby alleviating CP-induced gastrointestinal dysfunction. Therefore, AG may be a potential drug to prevent CP-induced intestinal damage.
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Affiliation(s)
- Jun-Jie Zhang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Shuang Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Xu-Fei Gao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Yun-Yi Hou
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Jun-Nan Hu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Jing-Tian Zhang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Jin-Gang Hou
- Intelligent Synthetic Biology Center, Daejeon 34141, Republic of Korea
| | - Zi Wang
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Xia Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China.
| | - Wei Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
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13
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Wang H, Chen Y, Liu X, Zhang R, Wang X, Zhang Q, Wei Y, Fang F, Yuan Y, Zhou Q, Dong Y, Shi S, Jiang X, Li X. TNF-α derived from arsenite-induced microglia activation mediated neuronal necroptosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 236:113468. [PMID: 35378400 DOI: 10.1016/j.ecoenv.2022.113468] [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: 12/14/2021] [Revised: 03/24/2022] [Accepted: 03/26/2022] [Indexed: 06/14/2023]
Abstract
Arsenic, an identified environmental toxicant, poses threats to the health of human beings through contaminated water and food. Recently, increasing reports focused on arsenic-induced nerve damage, however, the underlying mechanism remains elusive. Microglia are important immune cells in the nervous system, which produce a large number of inflammatory factors including TNF-α when activated. Recent reports indicated that TNF-α is involved in the process of necroptosis, a new type of programmed cell death discovered recently. Although there were evidences suggested that arsenic could induce both microglia activation and TNF-α production in the nervous system, the mechanism of arsenic-induced neurotoxicity due to microglia activation is rarely studied. In addition, the role of microglia-derived TNF-α in response to arsenic exposure in necroptosis has not been documented before. In this study, we found that arsenite induced microglial activation through p38 MAPK signaling pathway, leading to the production of TNF-α. Microglia-derived TNF-α further induced necroptosis in the neuronal cells. Our findings suggested that necroptosis induced by microglia-derived TNF-α upon arsenite exposure partially played a role in arsenic-induced cell death which underlie the fundamental event of arsenic-related neurotoxicity.
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Affiliation(s)
- Huanhuan Wang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yao Chen
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xudan Liu
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Ruo Zhang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xiaotong Wang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Qianhui Zhang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuting Wei
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Fang Fang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Ye Yuan
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Qianqian Zhou
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yinqiao Dong
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Sainan Shi
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xiaojing Jiang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xin Li
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China.
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14
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Norketamine, the Main Metabolite of Ketamine, Induces Mitochondria-Dependent and ER Stress-Triggered Apoptotic Death in Urothelial Cells via a Ca2+-Regulated ERK1/2-Activating Pathway. Int J Mol Sci 2022; 23:ijms23094666. [PMID: 35563057 PMCID: PMC9102902 DOI: 10.3390/ijms23094666] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/17/2022] [Accepted: 04/20/2022] [Indexed: 02/01/2023] Open
Abstract
Ketamine-associated cystitis is characterized by suburothelial inflammation and urothelial cell death. Norketamine (NK), the main metabolite of ketamine, is abundant in urine following ketamine exposure. NK has been speculated to exert toxic effects in urothelial cells, similarly to ketamine. However, the molecular mechanisms contributing to NK-induced urothelial cytotoxicity are almost unclear. Here, we aimed to investigate the toxic effects of NK and the potential mechanisms underlying NK-induced urothelial cell injury. In this study, NK exposure significantly reduced cell viability and induced apoptosis in human urinary bladder epithelial-derived RT4 cells that NK (0.01–0.5 mM) exhibited greater cytotoxicity than ketamine (0.1–3 mM). Signals of mitochondrial dysfunction, including mitochondrial membrane potential (MMP) loss and cytosolic cytochrome c release, were found to be involved in NK-induced cell apoptosis and death. NK exposure of cells also triggered the expression of endoplasmic reticulum (ER) stress-related proteins including GRP78, CHOP, XBP-1, ATF-4 and -6, caspase-12, PERK, eIF-2α, and IRE-1. Pretreatment with 4-phenylbutyric acid (an ER stress inhibitor) markedly prevented the expression of ER stress-related proteins and apoptotic events in NK-exposed cells. Additionally, NK exposure significantly activated JNK, ERK1/2, and p38 signaling and increased intracellular calcium concentrations ([Ca2+]i). Pretreatment of cells with both PD98059 (an ERK1/2 inhibitor) and BAPTA/AM (a cell-permeable Ca2+ chelator), but not SP600125 (a JNK inhibitor) and SB203580 (a p38 inhibitor), effectively suppressed NK-induced mitochondrial dysfunction, ER stress-related signals, and apoptotic events. The elevation of [Ca2+]i in NK-exposed cells could be obviously inhibited by BAPTA/AM, but not PD98059. Taken together, these findings suggest that NK exposure exerts urothelial cytotoxicity via a [Ca2+]i-regulated ERK1/2 activation, which is involved in downstream mediation of the mitochondria-dependent and ER stress-triggered apoptotic pathway, consequently resulting in urothelial cell death. Our findings suggest that regulating [Ca2+]i/ERK signaling pathways may be a promising strategy for treatment of NK-induced urothelial cystitis.
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15
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Neuromodulatory effects of hesperidin against sodium fluoride-induced neurotoxicity in rats: Involvement of neuroinflammation, endoplasmic reticulum stress, apoptosis and autophagy. Neurotoxicology 2022; 90:197-204. [DOI: 10.1016/j.neuro.2022.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 04/04/2022] [Accepted: 04/07/2022] [Indexed: 12/19/2022]
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16
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Yang CY, Liu SH, Su CC, Fang KM, Yang TY, Liu JM, Chen YW, Chang KC, Chuang HL, Wu CT, Lee KI, Huang CF. Methylmercury Induces Mitochondria- and Endoplasmic Reticulum Stress-Dependent Pancreatic β-Cell Apoptosis via an Oxidative Stress-Mediated JNK Signaling Pathway. Int J Mol Sci 2022; 23:ijms23052858. [PMID: 35270009 PMCID: PMC8910963 DOI: 10.3390/ijms23052858] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/21/2022] [Accepted: 03/01/2022] [Indexed: 12/21/2022] Open
Abstract
Methylmercury (MeHg), a long-lasting organic pollutant, is known to induce cytotoxic effects in mammalian cells. Epidemiological studies have suggested that environmental exposure to MeHg is linked to the development of diabetes mellitus (DM). The exact molecular mechanism of MeHg-induced pancreatic β-cell cytotoxicity is still unclear. Here, we found that MeHg (1-4 μM) significantly decreased insulin secretion and cell viability in pancreatic β-cell-derived RIN-m5F cells. A concomitant elevation of mitochondrial-dependent apoptotic events was observed, including decreased mitochondrial membrane potential and increased proapoptotic (Bax, Bak, p53)/antiapoptotic (Bcl-2) mRNA ratio, cytochrome c release, annexin V-Cy3 binding, caspase-3 activity, and caspase-3/-7/-9 activation. Exposure of RIN-m5F cells to MeHg (2 μM) also induced protein expression of endoplasmic reticulum (ER) stress-related signaling molecules, including C/EBP homologous protein (CHOP), X-box binding protein (XBP-1), and caspase-12. Pretreatment with 4-phenylbutyric acid (4-PBA; an ER stress inhibitor) and specific siRNAs for CHOP and XBP-1 significantly inhibited their expression and caspase-3/-12 activation in MeHg-exposed RIN-mF cells. MeHg could also evoke c-Jun N-terminal kinase (JNK) activation and reactive oxygen species (ROS) generation. Antioxidant N-acetylcysteine (NAC; 1mM) or 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (trolox; 100 μM) markedly prevented MeH-induced ROS generation and decreased cell viability in RIN-m5F cells. Furthermore, pretreatment of cells with SP600125 (JNK inhibitor; 10 μM) or NAC (1 mM) or transfection with JNK-specific siRNA obviously attenuated the MeHg-induced JNK phosphorylation, CHOP and XBP-1 protein expression, apoptotic events, and insulin secretion dysfunction. NAC significantly inhibited MeHg-activated JNK signaling, but SP600125 could not effectively reduce MeHg-induced ROS generation. Collectively, these findings demonstrate that the induction of ROS-activated JNK signaling is a crucial mechanism underlying MeHg-induced mitochondria- and ER stress-dependent apoptosis, ultimately leading to β-cell death.
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Affiliation(s)
- Ching-Yao Yang
- Department of Surgery, National Taiwan University Hospital, Taipei 100, Taiwan;
- Department of Surgery, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taiwan;
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan;
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan;
| | - Tsung-Yuan Yang
- Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan;
- School of Medicine, Institute of Medicine, Chung-Shan Medical University, Taichung 402, Taiwan
| | - Jui-Ming Liu
- Department of Urology, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330, Taiwan;
- Department of Obstetrics and Gynecology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
| | - Ya-Wen Chen
- Department of Physiology, School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan;
| | - Kai-Chih Chang
- Center for Digestive Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung 404, Taiwan;
| | - Haw-Ling Chuang
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan;
| | - Cheng-Tien Wu
- Department of Nutrition and Master Program of Food and Drug Safety, China Medical University, Taichung 40402, Taiwan;
| | - Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan;
- Correspondence: (K.-I.L.); (C.-F.H.)
| | - Chun-Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan
- Department of Nursing, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
- Correspondence: (K.-I.L.); (C.-F.H.)
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17
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Mozaffarian F, Dehghani MA, Vanani AR, Mahdavinia M. Protective Effects of Alpha Lipoic Acid Against Arsenic Induced Oxidative Stress in Isolated Rat Liver Mitochondria. Biol Trace Elem Res 2022; 200:1190-1200. [PMID: 33866498 DOI: 10.1007/s12011-021-02712-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/06/2021] [Indexed: 01/09/2023]
Abstract
Arsenic as a heavy metal and toxic pollutant has been established that has the hepatotoxic effect in animal and human models. Previous studies showed that mitochondria as the first target of arsenic toxicity has a pathogenic role in liver diseases. This study investigated alpha lipoic acid (ALA) as an antioxidant could ameliorate against liver toxicity induced by arsenic in rat mitochondria. First, mitochondria were isolated by the liver tissue centrifugation protocol. Then, isolated mitochondria were exposed with different concentrations of ALA and arsenic in different times for receiving the optimum dose and time. Finally, mitochondria were pretreated with the optimum concentrations and times of ALA and then treated with optimum concentration and time of arsenic (160 μg/ml; 30 min). The results demonstrated a significant decrease in total mitochondrial dehydrogenase activity (mitochondrial complex II) by 3, 4 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay after arsenic exposure. Mitochondria treated with arsenic also showed a significant increase in ROS generation, MMP, and MDA levels. The activity of mitochondrial catalase and mitochondrial GSH significantly decreased after exposure of mitochondria with arsenic. Pretreatment of mitochondria with ALA improved mitochondrial complex II activity; decreased mitochondrial membrane damage, MDA, and ROS amounts; and ameliorated mitochondrial GSH levels and mitochondrial catalase activity. These findings revealed that arsenic induced oxidative stress and mitochondria dysfunction, while ALA improved mitochondrial function through increasing of antioxidant defense or preserving of complex II, but suggested that ALA could prevent from mitochondria dysfunction.
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Affiliation(s)
- Farzan Mozaffarian
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Amin Dehghani
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Atefeh Raesi Vanani
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Masoud Mahdavinia
- Toxicology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
- Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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18
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Investigating the Neurotoxic Impacts of Arsenic and the Neuroprotective Effects of Dictyophora Polysaccharide Using SWATH-MS-Based Proteomics. Molecules 2022; 27:molecules27051495. [PMID: 35268596 PMCID: PMC8911851 DOI: 10.3390/molecules27051495] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/18/2022] [Accepted: 02/18/2022] [Indexed: 11/16/2022] Open
Abstract
Arsenic (As) is one of the most important toxic elements in the natural environment. Currently, although the assessment of the potential health risks of chronic arsenic poisoning has received great attention, the research on the effects of arsenic on the brain is still limited. It has been reported that dictyophora polysaccharide (DIP), a common bioactive natural compound found in dietary plants, could reduce arsenic toxicity. Following behavioral research, comparative proteomics was performed to explore the molecular mechanism of arsenic toxicity to the hippocampi of SD (Sprague Dawley) rats and the protective effect of DIP. The results showed that exposure to arsenic impaired the spatial learning and memory ability of SD rats, while DIP treatment improved both the arsenic-exposed rats. Proteomic analysis showed that arsenic exposure dysregulated the expression of energy metabolism, apoptosis, synapse, neuron, and mitochondria related proteins in the hippocampi of arsenic-exposed rats. However, DIP treatment reversed or restored the expression levels of these proteins, thereby improving the spatial learning and memory ability of arsenic-exposed rats. This study is the first to use high-throughput proteomics to reveal the mechanism of arsenic neurotoxicity in rats as well as the protective mechanism of DIP against arsenic neurotoxicity.
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Foyzun T, Mahmud AA, Ahammed MS, Manik MIN, Hasan MK, Islam KMM, Lopa SS, Al-Amin MY, Biswas K, Afrin MR, Alam AHMK, Sadik G. Polyphenolics with Strong Antioxidant Activity from Acacia nilotica Ameliorate Some Biochemical Signs of Arsenic-Induced Neurotoxicity and Oxidative Stress in Mice. Molecules 2022; 27:molecules27031037. [PMID: 35164302 PMCID: PMC8840196 DOI: 10.3390/molecules27031037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 11/23/2022] Open
Abstract
Neurotoxicity is a serious health problem of patients chronically exposed to arsenic. There is no specific treatment of this problem. Oxidative stress has been implicated in the pathological process of neurotoxicity. Polyphenolics have proven antioxidant activity, thereby offering protection against oxidative stress. In this study, we have isolated the polyphenolics from Acacia nilotica and investigated its effect against arsenic-induced neurotoxicity and oxidative stress in mice. Acacia nilotica polyphenolics prepared from column chromatography of the crude methanol extract using diaion resin contained a phenolic content of 452.185 ± 7.879 mg gallic acid equivalent/gm of sample and flavonoid content of 200.075 ± 0.755 mg catechin equivalent/gm of sample. The polyphenolics exhibited potent antioxidant activity with respect to free radical scavenging ability, total antioxidant activity and inhibition of lipid peroxidation. Administration of arsenic in mice showed a reduction of acetylcholinesterase activity in the brain which was counteracted by Acacia nilotica polyphenolics. Similarly, elevation of lipid peroxidation and depletion of glutathione in the brain of mice was effectively restored to normal level by Acacia nilotica polyphenolics. Gallic acid methyl ester, catechin and catechin-7-gallate were identified in the polyphenolics as the major active compounds. These results suggest that Acacia nilotica polyphenolics due to its strong antioxidant potential might be effective in the management of arsenic induced neurotoxicity.
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Affiliation(s)
- Tahira Foyzun
- Department of Pharmacy, Southeast University, Dhaka 1212, Bangladesh;
| | - Abdullah Al Mahmud
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Md. Salim Ahammed
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Md. Imran Nur Manik
- Department of Pharmacy, Northern University Bangladesh, Dhaka 1205, Bangladesh;
| | - Md. Kamrul Hasan
- Department of Pharmacy, Comilla University, Kotbari, Cumilla 3506, Bangladesh;
| | - KM Monirul Islam
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Simin Sobnom Lopa
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Md. Yusuf Al-Amin
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Kushal Biswas
- Department of Pharmacy, East West University, Dhaka 1212, Bangladesh; (K.B.); (M.R.A.)
| | - Mst. Rejina Afrin
- Department of Pharmacy, East West University, Dhaka 1212, Bangladesh; (K.B.); (M.R.A.)
| | - AHM Khurshid Alam
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
| | - Golam Sadik
- Department of Pharmacy, University of Rajshahi, Rajshahi 6205, Bangladesh; (A.A.M.); (M.S.A.); (K.M.I.); (S.S.L.); (M.Y.A.-A.); (A.K.A.)
- Correspondence:
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20
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Sun H, Yang Y, Gu M, Li Y, Jiao Z, Lu C, Li B, Jiang Y, Jiang L, Chu F, Yang W, Sun D, Gao Y. The role of Fas-FasL-FADD signaling pathway in arsenic-mediated neuronal apoptosis in vivo and in vitro. Toxicol Lett 2021; 356:143-150. [PMID: 34953944 DOI: 10.1016/j.toxlet.2021.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/16/2021] [Accepted: 11/22/2021] [Indexed: 11/18/2022]
Abstract
The molecular mechanisms underlying arsenic-induced neurotoxicity have not been completely elucidated. Our study aimed to determine the role of the Fas-FasL-FADD signaling pathway in arsenic-mediated neuronal apoptosis. Pathological and molecular biological tests were performed on the cerebral cortex of arsenic-exposed rats and SH-SY5Y neuroblastoma cells. Arsenic induced apoptosis in the cortical neurons, which corresponded to abnormal ultrastructural changes. Mechanistically, arsenic activated the Fas-FasL-FADD signaling pathway and the downstream caspases both in vivo and in vitro. ZB4 treatment reversed the apoptotic effects of arsenic on the SHSY5Y cells. Taken together, arsenic induces neurotoxicity by activating the Fas-FasL-FADD signaling pathway.
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Affiliation(s)
- Hongna Sun
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Yanmei Yang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Muyu Gu
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yang Li
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Zhe Jiao
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Chunqing Lu
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Bingyu Li
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Yuting Jiang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Lixin Jiang
- Harbin Medical University Cancer Hospital, Harbin, China
| | - Fang Chu
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Wenjing Yang
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China
| | - Dianjun Sun
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China.
| | - Yanhui Gao
- Institute for Endemic Fluorosis Control, Center for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin, Heilongjiang 150081, China; Key Lab of Etiology and Epidemiology, Education Bureau of Heilongjiang Province & Ministry of Health Commission(23618504), Harbin, 150081 Heilongjiang, China.
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Sasaki S, Negishi T, Tsuzuki T, Yukawa K. Diphenylarsinic acid induced activation of MAP kinases, transcription factors, and oxidative stress-responsive factors and hypersecretion of cytokines in cultured normal human cerebellar astrocytes. Neurotoxicology 2021; 88:196-207. [PMID: 34883095 DOI: 10.1016/j.neuro.2021.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/24/2021] [Accepted: 12/02/2021] [Indexed: 01/09/2023]
Abstract
Diphenylarsinic acid (DPAA) is a non-natural pentavalent organic arsenic and was detected in well water in Kamisu, Ibaraki, Japan in 2003. Individuals that had consumed this arsenic-contaminated water developed cerebellar symptoms such as myoclonus. We previously revealed that DPAA exposure in rats in vitro and in vivo specifically affected astrocytes rather than neurons among cerebellar cells. Here, we evaluated adverse effects of DPAA in cultured normal human cerebellar astrocytes (NHA), which were compared with those in normal rat cerebellar astrocytes (NRA) exposed to DPAA at 10 μM for 96 h, focusing on aberrant activation of astrocytes; increase in cell viability, activation of MAP kinases (ERK1/2, p38MAPK, and SAPK/JNK) and transcription factors (CREB, c-Jun, and c-Fos), upregulation of oxidative stress-responsive factors (Nrf2, HO-1, and Hsp70), and also hypersecretion of brain cytokines (MCP-1, adrenomedullin, FGF-2, CXCL1, and IL-6) as reported in NRA. While DPAA exposure at 10 μM for 96 h had little effect on NHA, a higher concentration (50 μM for 96 h) and longer exposure (10 μM for 288 h) induced similar aberrant activation. Moreover, exposure to DPAA at 50 μM for 96 h or 10 μM for 288 h in NHA induced hypersecretion of cytokines induced in DPAA-exposed NRA (MCP-1, adrenomedullin, FGF-2, CXCL1, and IL-6), and IL-8 besides into culture medium. These results suggested that aberrantly activated human astrocytes by DPAA exposure might play a pivotal role in the pathogenesis of cerebellar symptoms, affecting adjacent neurons, microglia, brain blood vessels, or astrocyte itself through these brain cytokines in human.
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Affiliation(s)
- Shoto Sasaki
- Department of Physiology, Graduate School of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan
| | - Takayuki Negishi
- Department of Physiology, Graduate School of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan; Department of Physiology, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan.
| | - Takamasa Tsuzuki
- Department of Physiology, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan
| | - Kazunori Yukawa
- Department of Physiology, Graduate School of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan; Department of Physiology, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya-shi, Aichi, 468-8503, Japan
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22
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Wang C, Deng H, Wang D, Wang J, Huang H, Qiu J, Li Y, Zou T, Guo L. Changes in metabolomics and lipidomics in brain tissue and their correlations with the gut microbiome after chronic food-derived arsenic exposure in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 228:112935. [PMID: 34801923 DOI: 10.1016/j.ecoenv.2021.112935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
Arsenic can cause neurodegenerative diseases of the brain, but the definite mechanism is still unknown. In this study, to discuss the disturbances on brain metabolome and lipidome under subchronic arsenic exposure, we treated mice with the arsenic-containing feed (concentration of total arsenic = 30 mg/kg) prepared in accordance with the proportion of rice arsenicals for 16 weeks and performed metabolomics and lipidomics studies respectively using UHPLC-Triple-TOF-MS/MS and UHPLC-Q Exactive Focus MS/MS on mice brain. In addition, the distributions of arsenical metabolites along the feed-gut-blood-brain chain were analyzed by ICP-MS and HPLC-ICP-MS, and fecal microbial variations were investigated by 16 s sequencing. The data showed that although only a tiny amount of arsenic (DMA=0.101 mg/kg, uAs=0.071 mg/kg) enters the brain through the blood-brain barrier, there were significant changes in brain metabolism, including 118 metabolites and 17 lipids. These different metabolites were involved in 30 distinct pathways, including glycometabolism, and metabolisms of lipid, nucleic acid, and amino acid were previously reported to be correlated with neurodegenerative diseases. Additionally, these different metabolites were significantly correlated with 12 gut bacterial OTUs, among which Lachnospiraceae, Muribaculaceae, Ruminococcaceae, and Erysipelotrichaceae were also previously reported to be related to the distortion of metabolism, indicating that the disturbance of metabolism in the brain may be associated with the disturbance of gut microbes induced by arsenic. Thus, the current study demonstrated that the brain metabolome and lipidome were significantly disturbed under subchronic arsenic exposure, and the disturbances also significantly correlated with some gut microbiome and may be associated with neurodegenerative diseases. Although preliminary, the results shed some light on the pathophysiology of arsenic-caused neurodegenerative diseases.
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Affiliation(s)
- Chenfei Wang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China; Shenzhen Nanshan Center for Chronic Disease Control, Shenzhen 518000, China.
| | - Hongyu Deng
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen 518110, China.
| | - Dongbin Wang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Jiating Wang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangzhou 510070, China; Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 528478, China.
| | - Hairong Huang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Jiayi Qiu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Yinfei Li
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Tangbin Zou
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Lianxian Guo
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
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He Z, Zhang Y, Zhang H, Zhou C, Ma Q, Deng P, Lu M, Mou Z, Lin M, Yang L, Li Y, Yue Y, Pi H, Lu Y, He M, Zhang L, Chen C, Zhou Z, Yu Z. NAC antagonizes arsenic-induced neurotoxicity through TMEM179 by inhibiting oxidative stress in Oli-neu cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 223:112554. [PMID: 34332247 DOI: 10.1016/j.ecoenv.2021.112554] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Arsenic is one of the most common environmental pollutants. Neurotoxicity induced by arsenic has become a major public health concern. However, the effects of arsenic-induced neurotoxicity in the brain and the underlying molecular mechanisms are not well understood. N-acetyl-cysteine (NAC) is a thiol-based antioxidant that can antagonize heavy metal-induced neurotoxicity by scavenging reactive oxygen species (ROS). Here, we used the mouse oligodendrocyte precursor cell (OPC) line Oli-neu to explore the neurotoxic effects of arsenic and the protective effects of NAC. We found that arsenic exposure decreased cell viability, increased oxidative stress, caused mitochondrial dysfunction, and led to apoptosis of Oli-neu cells. Furthermore, we revealed that NAC treatment reversed these neurotoxic effects of arsenic. TMEM179, a key membrane protein, was found highly expressed in OPCs and to be an important factor in maintaining mitochondrial functions. We found that TMEM179 played a critical role in mediating the neurotoxic effects of arsenic and the protective role of NAC. PKCβ is a downstream factor through which TMEM179 regulates the expression of apoptosis-related proteins. This study improves our understanding of the neurotoxic effects and mechanisms of arsenic exposure and the protective effects of NAC. It also identifies a potential molecular target, TMEM179, for the treatment of arsenic-induced neurotoxicity.
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Affiliation(s)
- Zhixin He
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Yajing Zhang
- School of Medicine, Guangxi University, 530004, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Huijie Zhang
- School of Medicine, Guangxi University, 530004, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Chao Zhou
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Qinlong Ma
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Ping Deng
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Muxue Lu
- School of Medicine, Guangxi University, 530004, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Zhenlin Mou
- School of Medicine, Guangxi University, 530004, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Min Lin
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Lingling Yang
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Yanqi Li
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Yang Yue
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Huifeng Pi
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Yonghui Lu
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Mindi He
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Lei Zhang
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China
| | - Chunhai Chen
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China.
| | - Zhou Zhou
- Department of Environmental Medicine, School of Public Health, and Department of Emergency Medicine, First Affiliated Hospital, School of Medicine, Zhejiang University, 310058 Hangzhou, People's Republic of China.
| | - Zhengping Yu
- Department of Occupational Health, Army Medical University, 400038, Chongqing, People's Republic of China.
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Gade M, Comfort N, Re DB. Sex-specific neurotoxic effects of heavy metal pollutants: Epidemiological, experimental evidence and candidate mechanisms. ENVIRONMENTAL RESEARCH 2021; 201:111558. [PMID: 34224706 PMCID: PMC8478794 DOI: 10.1016/j.envres.2021.111558] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/14/2021] [Accepted: 06/17/2021] [Indexed: 05/19/2023]
Abstract
The heavy metals lead (Pb), mercury (Hg), and cadmium (Cd) are ubiquitous environmental pollutants and are known to exert severe adverse impacts on the nervous system even at low concentrations. In contrast, the heavy metal manganese (Mn) is first and foremost an essential nutrient, but it becomes neurotoxic at high levels. Neurotoxic metals also include the less prevalent metalloid arsenic (As) which is found in excessive concentrations in drinking water and food sources in many regions of the world. Males and females often differ in how they respond to environmental exposures and adverse effects on their nervous systems are no exception. Here, we review the different types of sex-specific neurotoxic effects, such as cognitive and motor impairments, that have been attributed to Pb, Hg, Mn, Cd, and As exposure throughout the life course in epidemiological as well as in experimental toxicological studies. We also discuss differential vulnerability to these metals such as distinctions in behaviors and occupations across the sexes. Finally, we explore the different mechanisms hypothesized to account for sex-based differential susceptibility including hormonal, genetic, metabolic, anatomical, neurochemical, and epigenetic perturbations. An understanding of the sex-specific effects of environmental heavy metal neurotoxicity can aid in the development of more efficient systematic approaches in risk assessment and better exposure mitigation strategies with regard to sex-linked susceptibilities and vulnerabilities.
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Affiliation(s)
- Meethila Gade
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Nicole Comfort
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Diane B Re
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA; NIEHS Center of Northern Manhattan, Columbia University, New York, NY, USA; Motor Neuron Center for Biology and Disease, Columbia University, New York, NY, USA.
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25
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ERK: A Double-Edged Sword in Cancer. ERK-Dependent Apoptosis as a Potential Therapeutic Strategy for Cancer. Cells 2021; 10:cells10102509. [PMID: 34685488 PMCID: PMC8533760 DOI: 10.3390/cells10102509] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
The RAF/MEK/ERK signaling pathway regulates diverse cellular processes as exemplified by cell proliferation, differentiation, motility, and survival. Activation of ERK1/2 generally promotes cell proliferation, and its deregulated activity is a hallmark of many cancers. Therefore, components and regulators of the ERK pathway are considered potential therapeutic targets for cancer, and inhibitors of this pathway, including some MEK and BRAF inhibitors, are already being used in the clinic. Notably, ERK1/2 kinases also have pro-apoptotic functions under certain conditions and enhanced ERK1/2 signaling can cause tumor cell death. Although the repertoire of the compounds which mediate ERK activation and apoptosis is expanding, and various anti-cancer compounds induce ERK activation while exerting their anti-proliferative effects, the mechanisms underlying ERK1/2-mediated cell death are still vague. Recent studies highlight the importance of dual-specificity phosphatases (DUSPs) in determining the pro- versus anti-apoptotic function of ERK in cancer. In this review, we will summarize the recent major findings in understanding the role of ERK in apoptosis, focusing on the major compounds mediating ERK-dependent apoptosis. Studies that further define the molecular targets of these compounds relevant to cell death will be essential to harnessing these compounds for developing effective cancer treatments.
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Liu X, Chen Y, Wang H, Wei Y, Yuan Y, Zhou Q, Fang F, Shi S, Jiang X, Dong Y, Li X. Microglia-derived IL-1β promoted neuronal apoptosis through ER stress-mediated signaling pathway PERK/eIF2α/ATF4/CHOP upon arsenic exposure. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:125997. [PMID: 34229406 DOI: 10.1016/j.jhazmat.2021.125997] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/23/2021] [Accepted: 04/29/2021] [Indexed: 06/13/2023]
Abstract
Arsenic is the leading toxicant of hazardous environmental chemicals, which is linked with neurotoxicity including cognitive dysfunction, neurodevelopmental alterations and neurodegenerative disorders. It has been suggested that sustained pro-inflammatory response is one of the triggering factors of arsenic-induced neurotoxicity. Microglia, the immune cells in the central nervous system, response to physiological and pathological stress, and release a large array of pro-inflammatory cytokines if activated excessively. Several studies indicated that arsenic was capable of inducing microglia activation, however, the role of the subsequently released pro-inflammatory cytokines in arsenic-induced neurotoxicity remains to be elucidated. Our findings demonstrated that arsenic-induced cognitive dysfunction, microglia activation, up-regulation and release of IL-1β and ER stress-mediated apoptosis could be attenuated by minocycline, a recognized inhibitor of microglia activation. In addition, the IL-1 receptor antagonist IL-1ra diminished arsenic-induced activation of ER stress-mediated apoptotic pathway PERK/eIF2α/ATF4/CHOP and neuronal apoptosis. Our findings provided evidences that arsenic-induced microglia activation also contributed to neuronal apoptosis through pro-inflammatory cytokine. Microglia-derived IL-1β promoted hippocampal neuronal apoptosis through ER stress-mediated PERK/eIF2α/ATF4/CHOP apoptotic pathway. Neuronal apoptosis induced by prolonged activation of microglia was partially involved in the arsenic-induced cognitive dysfunction.
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Affiliation(s)
- Xudan Liu
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yao Chen
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Huanhuan Wang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yuting Wei
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Ye Yuan
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Qianqian Zhou
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Fang Fang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Sainan Shi
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xiaojing Jiang
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Yinqiao Dong
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China
| | - Xin Li
- Department of Occupational and Environmental Health, Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, School of Public Health, China Medical University, Shenyang 110122, China.
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Cheng H, Yang B, Ke T, Li S, Yang X, Aschner M, Chen P. Mechanisms of Metal-Induced Mitochondrial Dysfunction in Neurological Disorders. TOXICS 2021; 9:142. [PMID: 34204190 PMCID: PMC8235163 DOI: 10.3390/toxics9060142] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/31/2023]
Abstract
Metals are actively involved in multiple catalytic physiological activities. However, metal overload may result in neurotoxicity as it increases formation of reactive oxygen species (ROS) and elevates oxidative stress in the nervous system. Mitochondria are a key target of metal-induced toxicity, given their role in energy production. As the brain consumes a large amount of energy, mitochondrial dysfunction and the subsequent decrease in levels of ATP may significantly disrupt brain function, resulting in neuronal cell death and ensuing neurological disorders. Here, we address contemporary studies on metal-induced mitochondrial dysfunction and its impact on the nervous system.
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Affiliation(s)
- Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China; (H.C.); (X.Y.)
| | - Bobo Yang
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Tao Ke
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Shaojun Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning 530021, China;
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China; (H.C.); (X.Y.)
- Department of Public Health, School of Medicine, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Pan Chen
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
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Fu SC, Lin JW, Liu JM, Liu SH, Fang KM, Su CC, Hsu RJ, Wu CC, Huang CF, Lee KI, Chen YW. Arsenic induces autophagy-dependent apoptosis via Akt inactivation and AMPK activation signaling pathways leading to neuronal cell death. Neurotoxicology 2021; 85:133-144. [PMID: 34038756 DOI: 10.1016/j.neuro.2021.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 05/18/2021] [Accepted: 05/18/2021] [Indexed: 12/19/2022]
Abstract
Inorganic arsenic (As3+), a well-known worldwide industrial and environmental pollutant, has been linked to neurodegenerative disorders (NDs). Autophagy plays an important role in controlling neuronal cell survival/death. However, limited information is available regarding the toxicological mechanism at the interplay between autophagy and As3+-induced neurotoxicity. The present study found that As3+ exposure induced a concomitant activation of apoptosis and autophagy in Neuro-2a cells, which was accompanied with the increase of phosphatidylserine exposure on outer membrane leaflets and apoptotic cell population, and the activation of caspase-3, -7, and PARP as well as the elevation of protein expressions of LC3-II, Atg-5, and Beclin-1, and the accumulation of autophagosome. Pretreatment of cells with autophagy inhibitor 3-MA, but not that of Z-VAD-FMK (a pan-caspase inhibitor), effectively prevented the As3+-induced autophagic and apoptotic responses, indicating that As3+-triggered autophagy was contributing to neuronal cell apoptosis. Furthermore, As3+ exposure evoked the dephosphorylation of Akt. Pretreatment with SC79, an Akt activator, could significantly attenuated As3+-induced Akt inactivation as well as autophagic and apoptotic events. Expectedly, inhibition of Akt signaling with LY294002 obviously enhanced As3+-triggered autophagy and apoptosis. Exposure to As3+ also dramatically increased the phosphorylation level of AMPKα. Pretreatment of AMPK inhibitor (Compound C) could markedly abrogate the As3+-induced phosphorylated AMPKα expression, and autophagy and apoptosis activation. Taken together, these results indicated that As3+ exerted its cytotoxicity in neuronal cells via the Akt inactivation/AMPK activation downstream-regulated autophagy-dependent apoptosis pathways, which ultimately lead to cell death. Our findings suggest that the regulation of Akt/AMPK signals may be a promising intervention to against As3+-induced neurotoxicity and NDs.
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Affiliation(s)
- Shih-Chang Fu
- Division of Urology, Department of Surgery, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, 330, Taiwan
| | - Jhe-Wei Lin
- Department of Physiology and Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung, 404, Taiwan
| | - Jui-Ming Liu
- Division of Urology, Department of Surgery, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, 330, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, 100, Taiwan
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County, 500, Taiwan; School of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Ren-Jun Hsu
- Department of Pathology and Graduate Institute of Pathology and Parasitology, Tri-Service General Hospital, Taiwan; Biobank Management Center of Tri-Service General Hospital and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, 114, Taiwan
| | - Chin-Ching Wu
- Department of Public Health, China Medical University, Taichung, 404, Taiwan
| | - Chun-Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 404, Taiwan; Department of Nursing, College of Medical and Health Science, Asia University, Taichung, 413, Taiwan
| | - Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, 427, Taiwan.
| | - Ya-Wen Chen
- Department of Physiology and Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung, 404, Taiwan.
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N- trans-Feruloyloctopamine Wakes Up BBC3, DDIT3, CDKN1A, and NOXA Signals to Accelerate HCC Cell Apoptosis. ACTA ACUST UNITED AC 2021; 2021:1560307. [PMID: 34123711 PMCID: PMC8166497 DOI: 10.1155/2021/1560307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 05/11/2021] [Indexed: 12/24/2022]
Abstract
N-trans-Feruloyloctopamine (FO), a natural compound, was reported in our previous study to inhibit a tumor cell malignant phenotype by AKT- and EMT-related signals and might be used as a promising drug for HCC treatment. However, the specific targets and detailed mechanisms still need to be clarified. Screening with RNA-Seq in Huh7 cells treated with FO revealed that 317 genes were modulated, of which 188 genes were upregulated and 129 genes were downregulated. Real-time cell analyzer and flow cytometry data reveal that tumor cell proliferation and apoptosis were impacted by FO. DAVID bioinformatic data showed that most of the biological process GO terms are related to proliferation and apoptosis. KEGG enrichment analysis showed that FO mainly regulates PI3K-AKT- and apoptosis-related signals, in which BBC3, DDIT3, NOXA, and CDKN1A on the surface serve as the novel targets of FO inducing HCC cell apoptosis. The result implied that FO might exacerbate HCC cell apoptosis by regulating BBC3, DDIT3, CDKN1A, and NOXA signals. The obstacle effect of FO can provide new targets and new credibility for the treatment of liver cancer.
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Huang CC, Yang CY, Su CC, Fang KM, Yen CC, Lin CT, Liu JM, Lee KI, Chen YW, Liu SH, Huang CF. 4-Methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene, a Major Active Metabolite of Bisphenol A, Triggers Pancreatic β-Cell Death via a JNK/AMPKα Activation-Regulated Endoplasmic Reticulum Stress-Mediated Apoptotic Pathway. Int J Mol Sci 2021; 22:ijms22094379. [PMID: 33922211 PMCID: PMC8122752 DOI: 10.3390/ijms22094379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/18/2021] [Accepted: 04/20/2021] [Indexed: 11/16/2022] Open
Abstract
4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP), a major active metabolite of bisphenol A (BPA), is generated in the mammalian liver. Some studies have suggested that MBP exerts greater toxicity than BPA. However, the mechanism underlying MBP-induced pancreatic β-cell cytotoxicity remains largely unclear. This study demonstrated the cytotoxicity of MBP in pancreatic β-cells and elucidated the cellular mechanism involved in MBP-induced β-cell death. Our results showed that MBP exposure significantly reduced cell viability, caused insulin secretion dysfunction, and induced apoptotic events including increased caspase-3 activity and the expression of active forms of caspase-3/-7/-9 and PARP protein. In addition, MBP triggered endoplasmic reticulum (ER) stress, as indicated by the upregulation of GRP 78, CHOP, and cleaved caspase-12 proteins. Pretreatment with 4-phenylbutyric acid (4-PBA; a pharmacological inhibitor of ER stress) markedly reversed MBP-induced ER stress and apoptosis-related signals. Furthermore, exposure to MBP significantly induced the protein phosphorylation of JNK and AMP-activated protein kinase (AMPK)α. Pretreatment of β-cells with pharmacological inhibitors for JNK (SP600125) and AMPK (compound C), respectively, effectively abrogated the MBP-induced apoptosis-related signals. Both JNK and AMPK inhibitors also suppressed the MBP-induced activation of JNK and AMPKα and of each other. In conclusion, these findings suggest that MBP exposure exerts cytotoxicity on β-cells via the interdependent activation of JNK and AMPKα, which regulates the downstream apoptotic signaling pathway.
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Affiliation(s)
- Cheng-Chin Huang
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan; (C.-C.H.); (J.-M.L.); (K.-IL.)
| | - Ching-Yao Yang
- Department of Surgery, National Taiwan University Hospital, Taipei 100, Taiwan;
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan;
- School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan;
| | - Cheng-Chieh Yen
- Department of Occupational Safety and Health, College of Health Care and Management, Chung Shan Medical University, Taichung 402, Taiwan;
| | - Ching-Ting Lin
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Jui-Min Liu
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan; (C.-C.H.); (J.-M.L.); (K.-IL.)
| | - Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan; (C.-C.H.); (J.-M.L.); (K.-IL.)
| | - Ya-Wen Chen
- Department of Physiology and Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan;
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 100, Taiwan
- Correspondence: (S.-H.L.); (C.-F.H.)
| | - Chun-Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Department of Nursing, College of Medical and Health Science, Asia University, Taichung 413, Taiwan
- Correspondence: (S.-H.L.); (C.-F.H.)
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Kabir R, Sinha P, Mishra S, Ebenebe OV, Taube N, Oeing CU, Keceli G, Chen R, Paolocci N, Rule A, Kohr MJ. Inorganic arsenic induces sex-dependent pathological hypertrophy in the heart. Am J Physiol Heart Circ Physiol 2021; 320:H1321-H1336. [PMID: 33481702 PMCID: PMC8260381 DOI: 10.1152/ajpheart.00435.2020] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 01/15/2021] [Accepted: 01/15/2021] [Indexed: 01/17/2023]
Abstract
Arsenic exposure though drinking water is widespread and well associated with adverse cardiovascular outcomes, yet the pathophysiological mechanisms by which iAS induces these effects are largely unknown. Recently, an epidemiological study in an American population with a low burden of cardiovascular risk factors found that iAS exposure was associated with altered left ventricular geometry. Considering the possibility that iAS directly induces cardiac remodeling independently of hypertension, we investigated the impact of an environmentally relevant iAS exposure on the structure and function of male and female hearts. Adult male and female C56BL/6J mice were exposed to 615 μg/L iAS for 8 wk. Males exhibited increased systolic blood pressure via tail cuff photoplethysmography, left ventricular wall thickening via transthoracic echocardiography, and increased plasma atrial natriuretic peptide via enzyme immunoassay. RT-qPCR revealed increased myocardial RNA transcripts of Acta1, Myh7, and Nppa and decreased Myh6, providing evidence of pathological hypertrophy in the male heart. Similar changes were not detected in females, and nitric oxide-dependent mechanisms of cardioprotection in the heart appeared to remain intact. Further investigation found that Rcan1 was upregulated in male hearts and that iAS activated NFAT in HEK-293 cells via luciferase assay. Interestingly, iAS induced similar hypertrophic gene expression changes in neonatal rat ventricular myocytes, which were blocked by calcineurin inhibition, suggesting that iAS may induce pathological cardiac hypertrophy in part by targeting the calcineurin-NFAT pathway. As such, these results highlight iAS exposure as an independent cardiovascular risk factor and provide biological impetus for its removal from human consumption.NEW & NOTEWORTHY This investigation provides the first mechanistic link between an environmentally relevant dose of inorganic arsenic (iAS) and pathological hypertrophy in the heart. By demonstrating that iAS exposure may cause pathological cardiac hypertrophy not only by increasing systolic blood pressure but also by potentially activating calcineurin-nuclear factor of activated T cells and inducing fetal gene expression, these results provide novel mechanistic insight into the theat of iAS exposure to the heart, which is necessary to identify targets for medical and public health intervention.
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MESH Headings
- Animals
- Arsenites/toxicity
- Calcineurin/metabolism
- Female
- Gene Expression Regulation
- HEK293 Cells
- Humans
- Hypertrophy, Left Ventricular/chemically induced
- Hypertrophy, Left Ventricular/metabolism
- Hypertrophy, Left Ventricular/pathology
- Hypertrophy, Left Ventricular/physiopathology
- Isolated Heart Preparation
- Male
- Mice, Inbred C57BL
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- NFATC Transcription Factors/metabolism
- Sex Factors
- Signal Transduction
- Sodium Compounds/toxicity
- Time Factors
- Ventricular Function, Left/drug effects
- Ventricular Remodeling/drug effects
- Water Pollutants, Chemical/toxicity
- Mice
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Affiliation(s)
- Raihan Kabir
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Prithvi Sinha
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Sumita Mishra
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Obialunanma V Ebenebe
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Nicole Taube
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Chistian U Oeing
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Gizem Keceli
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Rui Chen
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Biomedical Sciences, University of Padova, Padua, Italy
| | - Ana Rule
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Mark J Kohr
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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Huang CF, Liu SH, Su CC, Fang KM, Yen CC, Yang CY, Tang FC, Liu JM, Wu CC, Lee KI, Chen YW. Roles of ERK/Akt signals in mitochondria-dependent and endoplasmic reticulum stress-triggered neuronal cell apoptosis induced by 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene, a major active metabolite of bisphenol A. Toxicology 2021; 455:152764. [PMID: 33771661 DOI: 10.1016/j.tox.2021.152764] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/24/2021] [Accepted: 03/21/2021] [Indexed: 12/11/2022]
Abstract
Bisphenol A (BPA) is recognized as a harmful pollutant in the worldwide. Growing studies have reported that BPA can cause adverse effects and diseases in human, and link to a potential risk factor for development of neurodegenerative diseases (NDs). 4-methyl-2,4-bis(4-hydroxyphenyl)pent-1-ene (MBP), which generated in the mammalian liver after BPA exposure, is a major active metabolite of BPA. MBP has been suggested to exert greater toxicity than BPA. However, the molecular mechanism of MBP on the neuronal cytotoxicity remains unclear. In this study, MBP exposure significantly reduced Neuro-2a cell viability and induced apoptotic events that MBP (5-15 μM) exhibited greater neuronal cytotoxicity than BPA (50-100 μM). The mitochondria-dependent apoptotic signals including the decrease in mitochondrial membrane potential (MMP) and the increase in cytosolic apoptosis-induced factor (AIF), cytochrome c release, and Bax protein expression were involved in MBP (10 μM)-induced Neuro-2a cell death. Exposure of Neuro-2a cells to MBP (10 μM) also triggered endoplasmic reticulum (ER) stress through the induction of several key molecules including glucose-regulated protein (GRP)78, C/EBP homologous protein (CHOP), X-box binding protein (XBP)-1, protein kinase R-like ER kinase (PERK), eukaryotic initiation factor 2α (eIF2α), inositol-requiring enzyme(IRE)-1, activation transcription factor(AFT)4 and ATF6, and caspase-12. Pretreatment with 4-PBA (an ER stress inhibitor) and specific siRNAs for GRP78, CHOP, and XBP-1 significantly suppressed the expression of these ER stress-related proteins and the activation of caspase-12/-3/-7 in MBP-exposed Neuro-2a cells. Furthermore, MBP (10 μM) exposure dramatically increased the activation of extracellular regulated protein (ERK)1/2 and decreased Akt phosphorylation. Pretreatment with PD98059 (an ERK1/2 inhibitor) and transfection with the overexpression of activation of Akt1 (myr-Akt1) effectively suppressed MBP-induced apoptotic and ER stress-related signals. Collectively, these results demonstrate that MBP exposure exerts neuronal cytotoxicity via the interplay of ERK activation and Akt inactivation-regulated mitochondria-dependent and ER stress-triggered apoptotic pathway, which ultimately leads to neuronal cell death.
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Affiliation(s)
- Chun-Fa Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, 404, Taiwan; Department of Nursing, College of Medical and Health Science, Asia University, Taichung, 413, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, 100, Taiwan
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County, 500, Taiwan; School of Medicine, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City, 220, Taiwan
| | - Cheng-Chieh Yen
- Department of Occupational Safety and Health, College of Health Care and Management, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Ching-Yao Yang
- Department of Surgery, National Taiwan University Hospital, and Department of Surgery, College of Medicine, National Taiwan University, Taipei, 100, Taiwan
| | - Feng-Cheng Tang
- Department of Occupational Medicine, Changhua Christian Hospital, Changhua County, 500, Taiwan
| | - Jui-Ming Liu
- Division of Urology, Department of Surgery, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, 330, Taiwan
| | - Chin-Ching Wu
- Department of Public Health, China Medical University, Taichung, 404, Taiwan
| | - Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, 427, Taiwan.
| | - Ya-Wen Chen
- Department of Physiology and Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung, 404, Taiwan.
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Cistanches deserticola PhG-RE through Inhibiting ERS Apoptosis Mechanism to Protect Myocardial Cell Apoptosis from H 2O 2-Induced Endoplasmic Reticulum Stress. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:8219296. [PMID: 33062023 PMCID: PMC7533003 DOI: 10.1155/2020/8219296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/15/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023]
Abstract
The herb Cistanche deserticola has some myocardial protective effects. This study attempted to explain the mechanism by which PhG-RE protects myocardial cells and verify if this protection occurs through regulating the apoptosis mechanism associated with endoplasmic reticulum stress (ERS). Rat myocardial cells were exposed to 150 μg·mL−1 PhG-RE for 24 h and then to 100 μmol·mL−1 H2O2 for 18 h to induce ERS and establish a cell damage model. Thapsigargin (TG), a specific ERS activator, and 4-phenylbutyric acid (4-PBA), an ERS inhibitor, were used to validate the accuracy of the experiment. Our results demonstrated that PhG-RE significantly improved cell viability, protected cells, and reduced cell damage and apoptosis. PhG-RE played a role similar to that of the ERS inhibitor 4-PBA in protecting myocardial cells against apoptosis and damage induced by ER stress. Furthermore, PhG-RE significantly attenuated the mRNA expression of the ERS-associated apoptotic factors GRP78, CHOP, and Caspase-12 and the protein expression of the ERS-associated apoptotic factors GRP78, CHOP, Caspase-12, and p-JNK. Taken together, these findings suggest that PhG-RE can effectively protect myocardial cells and reduce cell apoptosis and damage, which may be related to the regulation of ERS-associated apoptosis.
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Dong N, Feng J, Xie J, Tian X, Li M, Liu P, Zhao Y, Wei C, Gao Y, Li B, Qiu Y, Yan X. Co-exposure to Arsenic-Fluoride Results in Endoplasmic Reticulum Stress-Induced Apoptosis Through the PERK Signaling Pathway in the Liver of Offspring Rats. Biol Trace Elem Res 2020; 197:192-201. [PMID: 31768761 DOI: 10.1007/s12011-019-01975-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/01/2019] [Indexed: 12/17/2022]
Abstract
Arsenic and fluoride are two of the major groundwater pollutants. To better understand the liver damage induced during development, 24 male rats exposed to fluoride (F), arsenic (As), and their combination (As + F) from the prenatal stage to 90 days after birth were selected for analysis. Histopathological results showed vacuolar degeneration in the As and As + F groups. Compared to those in the control group, aspartate aminotransferase and alanine aminotransferase levels were significantly increased in the combined group. Catalase activity significantly decreased in the treatment groups compared to that in the controls, and the malondialdehyde content in the As and As + F groups was significantly higher than those in the control group. We further evaluated whether this damage is linked to endoplasmic reticulum stress and its related pathways. The mRNA expression levels of PERK, GRP78, EIF2α, ATF4, and CHOP as well as the protein levels of CHOP was significantly increased in the As + F group compared with the control group. These results demonstrate that As, F, and their combination could lead to liver function damage and reduce the antioxidant capacity of the liver to cause oxidative damage to tissues. Moreover, the combination of As and F triggers endoplasmic reticulum stress-induced apoptosis in liver cells by activating the PERK pathway in the unfolded protein response. As and F seem to have different independent effects, whereas their combination resulted in more severe effects overall.
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Affiliation(s)
- Nisha Dong
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jing Feng
- Shanxi Key Laboratory of Experimental Animal and Human Disease Animal Models, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jiaxin Xie
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Xiaolin Tian
- Shanxi Key Laboratory of Experimental Animal and Human Disease Animal Models, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Meng Li
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Penghui Liu
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yannan Zhao
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Cailing Wei
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yi Gao
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Ben Li
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Yulan Qiu
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Xiaoyan Yan
- School of Public Health, Shanxi Medical University, Taiyuan, 030001, Shanxi, China.
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The critical role of PPARα in the binary switch between life and death induced by endoplasmic reticulum stress. Cell Death Dis 2020; 11:691. [PMID: 32826849 PMCID: PMC7443130 DOI: 10.1038/s41419-020-02811-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 11/08/2022]
Abstract
Endoplasmic reticulum stress (ER stress) just like a double-edged sword depending on different conditions in the development of multiple hepatic diseases. But the molecular mechanisms of functional conversion during ER stress have not been fully elucidated. In this study, we aim to illustrate the role of PPARα and the subtle mechanism in the functional conversion of ER stress. Tunicamycin (TM) and thapsigargin (TG), as ER stress inducers, were used to induce ER stress in AML12 cells. During the ER stress, qRT-PCR and immunoblotting was used to measure the expression levels of GRP78 and CHOP which show a gradually increasing trend, while PPARα and autophagy was significantly activated in the early stage but was inhibited in the late stage. Moreover, PPARα inhibition by siRNA promoted cell injury in the mild-ER stress and PPARα activation by WY-14643 reduced cell apoptosis in the serious ER stress. In the mild-ER stress with PPARα knocked down, activation of autophagy by rapamycin significantly improved cell survival, in the serious ER stress with PPARα activation, inhibition of autophagy by 3-MA aggravate cell injury. In addition, in the mild-ER stress with PPARα knocked down, CHOP knocked down by siRNA reduced cell apoptosis, in the serious ER stress activated PPARα, CHOP over-expression mediated by lentiviral vector contributed to serious cell injury. Furthermore, C57BL/6 mice was used to induce ER stress with TM intraperitoneal injection, PPARα and autophagy was upregulated in the mild-ER stress while downregulated in the serious ER stress, measured by qRT-PCR and immunoblotting, further confirmed the finding in vitro. Our results firstly demonstrated that PPARα is a key molecule in the functional conversion of ER stress: protective effects in the mild ER stress was mediated by PPARα-autophagy pathway and destructive effects in the serious ER stress was mediated by PPARα-CHOP pathway.
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Concessao P, Bairy LK, Raghavendra AP. Protective effect of Mucuna pruriens against arsenic-induced liver and kidney dysfunction and neurobehavioral alterations in rats. Vet World 2020; 13:1555-1566. [PMID: 33061227 PMCID: PMC7522945 DOI: 10.14202/vetworld.2020.1555-1566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/21/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND AIM Intoxication of arsenic in rats is known to result in neurological effects as well as liver and kidney dysfunction. Mucuna pruriens has been identified for its medicinal properties. The aim of the study was to investigate the protective effect of aqueous seed extract of M. pruriens on sodium arsenite-induced memory impairment, liver, and kidney functions in rats. MATERIALS AND METHODS The experiment was divided into short-term treatment (45 days) and long-term treatment (90 days), with each group divided into nine sub-groups consisting of six animals each. Sub-groups 1 and 2 served as normal, and N-acetylcysteine (NAC) controls, respectively. Sub-groups 3-9 received sodium arsenite in drinking water (50 mg/L). In addition, sub-group 4 received NAC (210 mg/kg b.wt) orally once daily, sub-groups 5-7 received aqueous seed extract of M. pruriens (350 mg/kg b.wt, 530 mg/kg b.wt, and 700 mg/kg b.wt) orally once daily and sub-groups 8 and 9 received a combination of NAC and aqueous seed extract of M. pruriens (350 mg/kg b.wt and 530 mg/kg b.wt) orally once daily. Following the treatment, the blood was drawn retro-orbitally to assess the liver (serum alanine transaminase [ALT], serum aspartate transaminase, and serum alkaline phosphatase) and kidney (serum urea and serum creatinine) functions. Learning and memory were assessed by passive avoidance test. Animals were sacrificed by an overdose of ketamine, and their Nissl stained hippocampal sections were analyzed for alterations in neural cell numbers in CA1 and CA3 regions. RESULTS In the short-term treatment, groups administered with M. pruriens 530 mg/kg b.wt alone and combination of NAC + M. pruriens 350 mg/kg b.wt exhibited a significant improvement in memory retention, less severe neurodegeneration, and decrease in serum ALT levels. In long-term treatment, groups administered with M. pruriens 700 mg/kg b.wt alone and combination of NAC+M. pruriens 350 mg/kg b.wt, respectively, showed better memory retention, decreased neural deficits, and reduced levels of kidney and liver enzymes. CONCLUSION The seed extract of M. pruriens showed significant enhancement in memory and learning. The number of surviving neurons in the CA1 and CA3 regions also increased on treatment with M. pruriens. Serum ALT, serum urea, and serum creatinine levels showed significant improvement on long-term treatment with M. pruriens.
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Affiliation(s)
- Preethi Concessao
- Department of Physiology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Laxminarayana Kurady Bairy
- Department of Pharmacology, RAK College of Medical Sciences, RAK Medical and Health Sciences University, Ras Al Khaimah, United Arab Emirates
| | - Archana Parampalli Raghavendra
- Department of Physiology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Picropodophyllotoxin, an Epimer of Podophyllotoxin, Causes Apoptosis of Human Esophageal Squamous Cell Carcinoma Cells Through ROS-Mediated JNK/P38 MAPK Pathways. Int J Mol Sci 2020; 21:ijms21134640. [PMID: 32629820 PMCID: PMC7369713 DOI: 10.3390/ijms21134640] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 02/06/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC), a major histologic type of esophageal cancer, is one of the frequent causes of cancer-related death worldwide. Picropodophyllotoxin (PPT) is the main component of Podophyllum hexandrum root with antitumor activity via apoptosis-mediated mechanisms in several cancer cells. However, the underlying mechanism of the PPT effects in apoptosis induction in cancer remains ambiguous. Hence, in this study, we evaluate the anti-cancer effects of PPT in apoptotic signaling pathway-related mechanisms in ESCC cells. First, to verify the effect of PPT on ESCC cell viability, we employed an MTT assay. PPT inhibited the viability of ESCC cells in time- and dose-dependent manners. PPT induced G2/M phase cell cycle arrest and annexin V-stained cell apoptosis through the activation of the c-Jun N-terminal kinase (JNK)/p38 pathways. Furthermore, the treatment of KYSE 30 and KYSE 450 ESCC cells with PPT induced apoptosis involving the regulation of endoplasmic reticulum stress- and apoptosis-related proteins by reactive oxygen species (ROS) generation, the loss of mitochondrial membrane potential, and multi-caspase activation. In conclusion, our results indicate that the apoptotic effect of PPT on ESCC cells has the potential to become a new anti-cancer drug by increasing ROS levels and inducing the JNK/p38 signaling pathways.
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Abstract
Exposure to arsenic in contaminated drinking water is a worldwide public health problem that affects more than 200 million people. Protein quality control constitutes an evolutionarily conserved mechanism for promoting proper folding of proteins, refolding of misfolded proteins, and removal of aggregated proteins, thereby maintaining homeostasis of the proteome (i.e., proteostasis). Accumulating lines of evidence from epidemiological and laboratory studies revealed that chronic exposure to inorganic arsenic species can elicit proteinopathies that contribute to neurodegenerative disorders, cancer, and type II diabetes. Here, we review the effects of arsenic exposure on perturbing various elements of the proteostasis network, including mitochondrial homeostasis, molecular chaperones, inflammatory response, ubiquitin-proteasome system, autophagy, as well as asymmetric segregation and axonal transport of misfolded proteins. We also discuss arsenic-induced disruptions of post-translational modifications of proteins, for example, ubiquitination, and their implications in proteostasis. Together, studies in the past few decades support that disruption of protein quality control may constitute an important mechanism underlying the arsenic-induced toxicity.
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An K, Xue MJ, Zhong JY, Yu SN, Lan TS, Qi ZQ, Xia JJ. Arsenic trioxide ameliorates experimental autoimmune encephalomyelitis in C57BL/6 mice by inducing CD4 + T cell apoptosis. J Neuroinflammation 2020; 17:147. [PMID: 32375831 PMCID: PMC7201567 DOI: 10.1186/s12974-020-01829-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is an immune-mediated disease of the central nervous system characterized by severe white matter demyelination. Because of its complex pathogenesis, there is no definite cure for MS. Experimental autoimmune encephalomyelitis (EAE) is an ideal animal model for the study of MS. Arsenic trioxide (ATO) is an ancient Chinese medicine used for its therapeutic properties with several autoimmune diseases. It is also used to inhibit acute immune rejection due to its anti-inflammatory and immunosuppressive properties. However, it is unclear whether ATO has a therapeutic effect on EAE, and the underlying mechanisms have not yet been clearly elucidated. In this study, we attempted to assess whether ATO could be used to ameliorate EAE in mice. METHODS ATO (0.5 mg/kg/day) was administered intraperitoneally to EAE mice 10 days post-immunization for 8 days. On day 22 post-immunization, the spinal cord, spleen, and blood were collected to analyze demyelination, inflammation, microglia activation, and the proportion of CD4+ T cells. In vitro, for mechanistic studies, CD4+ T cells were sorted from the spleen of naïve C57BL/6 mice and treated with ATO and then used for an apoptosis assay, JC-1 staining, imaging under a transmission electron microscope, and western blotting. RESULTS ATO delayed the onset of EAE and alleviated the severity of EAE in mice. Treatment with ATO also attenuated demyelination, alleviated inflammation, reduced microglia activation, and decreased the expression levels of IL-2, IFN-γ, IL-1β, IL-6, and TNF-α in EAE mice. Moreover, the number and proportion of CD4+ T cells in the spinal cord, spleen, and peripheral blood were reduced in ATO-treated EAE mice. Finally, ATO induced CD4+ T cell apoptosis via the mitochondrial pathway both in vitro and in vivo. Additionally, the administration of ATO had no adverse effect on the heart, liver, or kidney function, nor did it induce apoptosis in the spinal cord. CONCLUSIONS Overall, our findings indicated that ATO plays a protective role in the initiation and progression of EAE and has the potential to be a novel drug in the treatment of MS.
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Affiliation(s)
- Ke An
- Organ Transplantation Institute of Xiamen University, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Meng-Jiao Xue
- Organ Transplantation Institute of Xiamen University, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Jia-Ying Zhong
- Organ Transplantation Institute of Xiamen University, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Sheng-Nan Yu
- Organ Transplantation Institute of Xiamen University, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Department of Obstetrics and Gynecology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian, China
| | - Tian-Shu Lan
- Key Laboratory of Functional and Clinical Translational Medicine, Fujian Province University, Xiamen Medical College, Xiamen, Fujian, China
| | - Zhong-Quan Qi
- School of Medicine, Guangxi University, Nanning, Guangxi, China.
| | - Jun-Jie Xia
- Organ Transplantation Institute of Xiamen University, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China.
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Chang L, Zhang W, Shi S, Peng Y, Wang D, Zhang L, Zhang J. microRNA-195 attenuates neuronal apoptosis in rats with ischemic stroke through inhibiting KLF5-mediated activation of the JNK signaling pathway. Mol Med 2020; 26:31. [PMID: 32272873 PMCID: PMC7146986 DOI: 10.1186/s10020-020-00150-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 02/18/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Accumulating evidence has implicated the regulation of microRNAs (miRs) in ischemia stroke. The current study aimed to elucidate the role of microRNA-195 (miR-195) in neuronal apoptosis and brain plasticity in rats with ischemic stroke via the JNK signaling pathway/KLF5 axis. METHODS Ischemic stroke rat models were established by middle cerebral artery occlusion (MCAO), and oxygen deprivation (OGD) models were constructed in rat neuronal cells, followed by gain- or loss-of-function of miR-195 and/or KLF5 in rats and cells. Infarct volume, neuronal loss and ultrastructure, the expression of GAP-43, SYP and KLF5 protein as well as cell apoptosis were determined in the rats. Caspase-3 activity as well as the expression of miR-195, KLF5, GAP-43, SYP, JNK, phosphorylated JNK, Bax and Bcl-2 was measured in the cells. RESULTS The infarct size, expression of GAP-43 and SYP protein and apoptotic cells were increased in the miR-195-/- MCAO rats, while reductions were detected in the miR-195 mimic MCAO and KLF5-/- MCAO rats. Bcl-2 expression was increased, Bax and Caspase-3 expression as well as the ratio of phosphorylated JNK/JNK was decreased in response to miR-195 overexpression or KLF5 knockdown. Interestingly, the silencing of KLF5 reversed the effects exerted by the miR-195 inhibitor on the expression of Bcl-2, phosphorylated JNK/JNK, Bax and Caspase-3. CONCLUSIONS Collectively, our study unraveled that miR-195 could down-regulate KLF5 and block the JNK signaling pathway, ultimately inhibiting neuronal apoptosis in rats with ischemic stroke.
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Affiliation(s)
- Lisha Chang
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China
| | - Wan Zhang
- Quality Control Office, North China University of Science and Technology Affiliated Hospital, Tangshan, 063000, People's Republic of China
| | - Songxin Shi
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China
| | - Yanbo Peng
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China
| | - Dali Wang
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China
| | - Li Zhang
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China
| | - Jiang Zhang
- Department of Neurology, North China University of Science and Technology Affiliated Hospital, No. 73, Jianshe South Road, Tangshan, 063000, Hebei Province, People's Republic of China.
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Park HR, Sun R, Panganiban RA, Christiani DC, Lu Q. MicroRNA-124 Reduces Arsenic-induced Endoplasmic Reticulum Stress and Neurotoxicity and is Linked with Neurodevelopment in Children. Sci Rep 2020; 10:5934. [PMID: 32246005 PMCID: PMC7125130 DOI: 10.1038/s41598-020-62594-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 03/09/2020] [Indexed: 12/11/2022] Open
Abstract
Arsenic (As) exposure adversely affects neurodevelopment in children. Accumulation of misfolded proteins in cells exposed to As leads to endoplasmic reticulum (ER) stress response, which, if not relieved, results in cell death. Despite the potential role of ER stress for As-induced neurotoxicity, the underlying mechanisms remain poorly understood. Here we aimed to investigate the roles of microRNA(miR)-124, a novel ER stress suppressor, in As-induced ER stress response and cytotoxicity in neural cells. We further aimed to link these in vitro findings to neurodevelopmental outcomes in children who were exposed to As. Using Quantitative RT-PCR and Cyquant assay, we showed that miR-124 protects against As-induced cytotoxicity in neural cells with concomitant suppression of As-induced ER stress. In addition, As-induced cytotoxicity was exacerbated in miR-124 knockout cells generated by CRISPR-based gene editing compared scramble control. Furthermore, we identified two miR-124 SNPs rs67543816 (p = 0.0003) and rs35418153 (p = 0.0004) that are significantly associated with a mental composite score calculated from the Bayley Scales of Infant Development III in Bangladesh children. Our study reveals As-induced ER stress as a crucial mechanism underlying the toxic effects of As on neural cell function and neurodevelopment and identifies miR-124 as a potential preventative and therapeutic target against detrimental effects of As exposure in children.
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Affiliation(s)
- Hae-Ryung Park
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Ryan Sun
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Ronald A Panganiban
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - David C Christiani
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA
| | - Quan Lu
- Program in Molecular and Integrative Physiological Sciences, Departments of Environmental Health, and Genetics & Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, 02115, USA.
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Cr(VI) induces ROS-mediated mitochondrial-dependent apoptosis in neuronal cells via the activation of Akt/ERK/AMPK signaling pathway. Toxicol In Vitro 2020; 65:104795. [PMID: 32061800 DOI: 10.1016/j.tiv.2020.104795] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/27/2020] [Accepted: 02/11/2020] [Indexed: 12/21/2022]
Abstract
Hexavalent chromium (Cr(VI)), a well-known toxic industrial and environmental pollutant, has been shown to cause serious toxic and health effects. However, limited information is available on Cr(VI)-induced neurotoxic potential, with the underlying toxicological mechanisms remain mostly unclear. The present study demonstrated that the mitochondria-dependent apoptosis pathway was involved in Cr(VI)-induced SH-SY5Y cell (the human neuroblastoma cell line) death, which was accompanied by the appearance of cell shrinkage, increased mitochondrial membrane potential (MMP) depolarization and cytochrome c release, and the activation of caspase cascades and poly (ADP-ribose) polymerase (PARP). Cr(VI) treatment also increased the generation of intracellular reactive oxygen species (ROS). Pretreatment of SH-SY5Y cells with antioxidant N-acetylcysteine (NAC) effectively attenuated ROS production and reversed these Cr(VI)-induced cytotoxicity and apoptotic responses. Furthermore, exposure to Cr(VI) significantly increased the phosphorylation levels of Akt, extracellular regulated kinase (ERK)1/2, and AMP-activated protein kinase (AMPK)α. NAC and the pharmacological inhibitor of Akt (LY294002), ERK1/2 (PD980590), and AMPKα (Compound C) markedly abrogated the Cr(VI)-induced activation of Akt, ERK1/2, and AMPKα signal, respectively, with the concomitant inhibition of mitochondrial dysfunction and caspase activation. Additionally, all these inhibitors suppressed Cr(VI)-induced phosphorylation of Akt, ERK1/2, and AMPKα and of each other. Collectively, these results suggest that Cr(VI) exerts its cytotoxicity on neuronal cells by inducing mitochondria-dependent apoptosis through the interdependent activation of Akt, ERK1/2, and AMPKα, which are mainly mediated by ROS generation.
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The Role of Reactive Oxygen Species in Arsenic Toxicity. Biomolecules 2020; 10:biom10020240. [PMID: 32033297 PMCID: PMC7072296 DOI: 10.3390/biom10020240] [Citation(s) in RCA: 149] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 01/28/2020] [Accepted: 01/29/2020] [Indexed: 12/13/2022] Open
Abstract
Arsenic poisoning is a global health problem. Chronic exposure to arsenic has been associated with the development of a wide range of diseases and health problems in humans. Arsenic exposure induces the generation of intracellular reactive oxygen species (ROS), which mediate multiple changes to cell behavior by altering signaling pathways and epigenetic modifications, or cause direct oxidative damage to molecules. Antioxidants with the potential to reduce ROS levels have been shown to ameliorate arsenic-induced lesions. However, emerging evidence suggests that constructive activation of antioxidative pathways and decreased ROS levels contribute to chronic arsenic toxicity in some cases. This review details the pathways involved in arsenic-induced redox imbalance, as well as current studies on prophylaxis and treatment strategies using antioxidants.
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Ren Z, Yao L, Liu J, Qi Z, Li J. Silencing NOB1 Can Affect Cell Proliferation and Apoptosis Via the C-Jun N-Terminal Kinase Pathway in Colorectal Cancer. J INVEST SURG 2020; 34:819-825. [PMID: 31906747 DOI: 10.1080/08941939.2019.1697401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES To investigate the bio-functions and the molecular mechanisms of NIN1/proteasome 26S subunit non-ATPase 8 binding protein 1 homolog (NOB1) in colorectal cancer cells. METHODS NOB1 expression was silenced using si-RNA in SW480 and LoVo cells. The transfection efficiency was measured by western blotting and RT-qPCR. Subsequently, the proliferation of SW480 and LoVo cells was determined using both MTT assay and colony-formation assay. Apoptosis and cell cycle analysis were determined using flow cytometry. RESULTS Compared with the normal control (NC) and scramble cells, si-NOB1 could significantly attenuate the proliferation, colony-formation ability and cell percentage of S stage (p < 0.05). Additionally, at the phosphorylation level, si-NOB1 could notably increase the expression of c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK) and p38. CONCLUSIONS Inhibition of NOB1 expression suppressed the proliferation, and promoted the apoptosis through regulation of the JNK signaling pathway.
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Affiliation(s)
- Zhong Ren
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liqing Yao
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jingzheng Liu
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhipeng Qi
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jian Li
- Endoscopy Center, Zhongshan Hospital, Fudan University, Shanghai, China
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Adedara IA, Fabunmi AT, Ayenitaju FC, Atanda OE, Adebowale AA, Ajayi BO, Owoeye O, Rocha JB, Farombi EO. Neuroprotective mechanisms of selenium against arsenic-induced behavioral impairments in rats. Neurotoxicology 2020; 76:99-110. [DOI: 10.1016/j.neuro.2019.10.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/20/2019] [Accepted: 10/24/2019] [Indexed: 12/13/2022]
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Jiménez-Vidal L, Espitia-Pérez P, Torres-Ávila J, Ricardo-Caldera D, Salcedo-Arteaga S, Galeano-Páez C, Pastor-Sierra K, Espitia-Pérez L. Nuclear factor erythroid 2 - related factor 2 and its relationship with cellular response in nickel exposure: a systems biology analysis. BMC Pharmacol Toxicol 2019; 20:78. [PMID: 31852525 PMCID: PMC6921378 DOI: 10.1186/s40360-019-0360-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Nickel and nickel-containing compounds (NCC) are known human carcinogens. However, the precise molecular mechanisms of nickel-induced malignant transformation remain unknown. Proposed mechanisms suggest that nickel and NCC may participate in the dual activation/inactivation of enzymatic pathways involved in cell defenses against oxidative damage, where Nuclear factor-erythroid 2 related factor 2 (Nrf2) plays a central role. Methods For assessing the potential role of proteins involved in the Nrf2-mediated response to nickel and NCC exposure, we designed an interactome network using the STITCH search engine version 5.0 and the STRING software 10.0. The major NCC-protein interactome (NCPI) generated was analyzed using the MCODE plugin, version 1.5.1 for the detection of interaction modules or subnetworks. Main centralities of the NCPI were determined with the CentiScape 2.2 plugin of Cytoscape 3.4.0 and main biological processes associated with each cluster were assessed using the BiNGO plugin of Cytoscape 3.4.0. Results Water-soluble NiSO4 and insoluble Ni3S2 were the most connected to proteins involved in the NCPI network. Nfr2 was detected as one of the most relevant proteins in the network, participating in several multifunctional protein complexes in clusters 1, 2, 3 and 5. Ontological analysis of cluster 3 revealed several processes related to unfolded protein response (UPR) and response to endoplasmic reticulum (ER) stress. Conclusions Cellular response to NCC exposure was very comparable, particularly concerning oxidative stress response, inflammation, cell cycle/proliferation, and apoptosis. In this cellular response, Nfr2 was highly centralized and participated in several multifunctional protein complexes, including several related to ER-stress. These results add evidence on the possible Ni2+ induced – ER stress mainly associated with insoluble NCC. In this scenario, we also show how protein degradation mediated by ubiquitination seems to play key roles in cellular responses to Ni.
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Affiliation(s)
- Luisa Jiménez-Vidal
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia
| | - Pedro Espitia-Pérez
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia
| | - José Torres-Ávila
- Unit for Development and Innovation in Genetics and Molecular Biology, Universidad Simón Bolívar, Barranquilla, Atlántico, Colombia
| | - Dina Ricardo-Caldera
- Facultad de Ciencias de la Salud, Grupo de Investigación en Enfermedades Tropicales y Resistencia Bacteriana, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Shirley Salcedo-Arteaga
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia
| | - Claudia Galeano-Páez
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia
| | - Karina Pastor-Sierra
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia
| | - Lyda Espitia-Pérez
- Facultad de Ciencias de la Salud, Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Calle 38 Cra 1W, Barrio Juan XXIII, Montería, Córdoba, Colombia.
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Garza-Lombó C, Pappa A, Panayiotidis MI, Gonsebatt ME, Franco R. Arsenic-induced neurotoxicity: a mechanistic appraisal. J Biol Inorg Chem 2019; 24:1305-1316. [PMID: 31748979 DOI: 10.1007/s00775-019-01740-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 10/24/2019] [Indexed: 12/19/2022]
Abstract
Arsenic is a metalloid found in groundwater as a byproduct of soil/rock erosion and industrial and agricultural processes. This xenobiotic elicits its toxicity through different mechanisms, and it has been identified as a toxicant that affects virtually every organ or tissue in the body. In the central nervous system, exposure to arsenic can induce cognitive dysfunction. Furthermore, iAs has been linked to several neurological disorders, including neurodevelopmental alterations, and is considered a risk factor for neurodegenerative disorders. However, the exact mechanisms involved are still unclear. In this review, we aim to appraise the neurotoxic effects of arsenic and the molecular mechanisms involved. First, we discuss the epidemiological studies reporting on the effects of arsenic in intellectual and cognitive function during development as well as studies showing the correlation between arsenic exposure and altered cognition and mental health in adults. The neurotoxic effects of arsenic and the potential mechanisms associated with neurodegeneration are also reviewed including data from experimental models supporting epidemiological evidence of arsenic as a neurotoxicant. Next, we focused on recent literature regarding arsenic metabolism and the molecular mechanisms that begin to explain how arsenic damages the central nervous system including, oxidative stress, energy failure and mitochondrial dysfunction, epigenetics, alterations in neurotransmitter homeostasis and synaptic transmission, cell death pathways, and inflammation. Outlining the specific mechanisms by which arsenic alters the cell function is key to understand the neurotoxic effects that convey cognitive dysfunction, neurodevelopmental alterations, and neurodegenerative disorders.
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Affiliation(s)
- Carla Garza-Lombó
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.,Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - María E Gonsebatt
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico
| | - Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA. .,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA.
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Lee KI, Lin JW, Su CC, Fang KM, Yang CY, Kuo CY, Wu CC, Wu CT, Chen YW. Silica nanoparticles induce caspase-dependent apoptosis through reactive oxygen species-activated endoplasmic reticulum stress pathway in neuronal cells. Toxicol In Vitro 2019; 63:104739. [PMID: 31756540 DOI: 10.1016/j.tiv.2019.104739] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/07/2019] [Accepted: 11/18/2019] [Indexed: 01/10/2023]
Abstract
Human exposure to silica nanoparticles (SiNPs) has been widely applied as vehicles for drug delivery and cellular manipulations in nanoneuromedicine. SiNPs may cause adverse effects in the brain, but potential mechanisms underlying SiNPs-induced neurotoxicity are remained unclear. Here, we examined cytotoxic effects and the cellular mechanisms of SiNPs-induced neuronal cell death. In this study, the results showed that SiNPs significantly decreased cell viability and induced apoptosis in Neuro-2a cells as evidenced by the increase caspase-3 activity and the activation of caspase cascades and poly (ADP-ribose) polymerase (PARP). In addition, endoplasmic reticulum (ER) stress was triggered as indicated by several key molecules including glucose-regulated protein (GRP)78 and 94, C/EBP homologous protein (CHOP), activation transcription factor (ATF)-4, and caspase-12. Pretreatment of Neuro-2a cells with specific pharmacological inhibitor of ER stress (4-phenylbutyric acid (4-PBA)) effectively alleviated the SiNPs-induced ER stress and apoptotic related signals. Furthermore, 2',7'-Dichlorofluorescein fluorescence as an indicator of reactive oxygen species (ROS) formation after exposure of Neuro-2a cells to SiNPs significantly increased ROS levels. Antioxidant N-acetylcyseine (NAC) effectively reversed SiNPs-induced cellular responses. Taken together, these results suggest that SiNPs exposure exerts its neurotoxicity in cultured neuronal cells by inducing apoptosis via a ROS generation-activated downstream ER stress signaling pathway.
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Affiliation(s)
- Kuan-I Lee
- Department of Emergency, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427, Taiwan
| | - Jhe-Wei Lin
- Department of Physiology, Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Chin-Chuan Su
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan
| | - Kai-Min Fang
- Department of Otolaryngology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan
| | - Ching-Yao Yang
- Department of Surgery, National Taiwan University Hospital, Department of Surgery, College of Medicine, National Taiwan University, Taipei 100, Taiwan
| | - Chun-Ying Kuo
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua County 500, Taiwan
| | - Chin-Ching Wu
- Department of Public Health, China Medical University, Taichung 404, Taiwan
| | - Cheng-Tien Wu
- Department of Nutrition and Master Program of Food and Drug Safety, China Medical University, Taichung 40402, Taiwan
| | - Ya-Wen Chen
- Department of Physiology, Graduate Institute of Basic Medical Science, School of Medicine, College of Medicine, China Medical University, Taichung 404, Taiwan.
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Khin PP, Po WW, Thein W, Sohn UD. Apoptotic effect of fluoxetine through the endoplasmic reticulum stress pathway in the human gastric cancer cell line AGS. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:537-549. [PMID: 31707450 DOI: 10.1007/s00210-019-01739-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 09/20/2019] [Indexed: 12/23/2022]
Abstract
Gastric cancer is the fourth most common cancer in the world. Fluoxetine (FLX), a selective serotonin reuptake inhibitor, can inhibit the growth of cancer cells by inducing apoptotic cell death through various signaling pathways. This study was aimed to determine the mechanism of apoptotic cell death induced by FLX in AGS cells. MTT assay for cell viability test and colony forming assay was performed for detection of cell proliferation. Western blot analysis was conducted for protein expression. Increased fluorescence intensity and chromatin condensation were observed using DAPI staining. Production of reactive oxygen species (ROS) was measured by DCFDA assay. AGS cell proliferation was remarkedly inhibited by FLX in a dose-dependent manner starting at a concentration of 20 μM. The expression of death receptors was increased, which resulted in elevated expression of activated caspases and cleaved PARP, leading to FLX-induced apoptosis. Moreover, FLX significantly increased production of ROS, and N-acetyl cysteine, which scavenges ROS, attenuated the cytotoxic effects of FLX. In addition, treatment with FLX increased the expression of the endoplasmic reticulum (ER) stress marker, CHOP. P53 protein expression in AGS cells also decreased significantly with FLX treatment. Inhibition of ER stress significantly decreased the expressions of death receptor 5 (DR5), cleaved caspase 3, and cleaved PARP, but not to control levels. FLX-induced apoptosis in AGS involved upregulation of death receptors, ROS generation, and activation of ER stress.
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Affiliation(s)
- Phyu Phyu Khin
- Laboratory of Signaling and Pharmacological Activity, Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Wah Wah Po
- Laboratory of Signaling and Pharmacological Activity, Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Wynn Thein
- Laboratory of Signaling and Pharmacological Activity, Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Uy Dong Sohn
- Laboratory of Signaling and Pharmacological Activity, Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea.
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Masjosthusmann S, Siebert C, Hübenthal U, Bendt F, Baumann J, Fritsche E. Arsenite interrupts neurodevelopmental processes of human and rat neural progenitor cells: The role of reactive oxygen species and species-specific antioxidative defense. CHEMOSPHERE 2019; 235:447-456. [PMID: 31272005 DOI: 10.1016/j.chemosphere.2019.06.123] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 06/15/2019] [Accepted: 06/16/2019] [Indexed: 05/10/2023]
Abstract
Arsenic exposure disturbs brain development in humans. Although developmental neurotoxicity (DNT) of arsenic has been studied in vivo and in vitro, its mode-of-action (MoA) is not completely understood. Here, we characterize the adverse neurodevelopmental effects of sodium arsenite on developing human and rat neural progenitor cells (hNPC, rNPC). Moreover, we analyze the involvement of reactive oxygen species (ROS) and the role of the glutathione (GSH)-dependent antioxidative defense for arsenite-induced DNT in a species-specific manner. We determined IC50 values for sodium arsenite-dependent (0.1-10 μM) inhibition of hNPC and rNPC migration (6.0 μM; >10 μM), neuronal (2.7 μM; 4.4 μM) and oligodendrocyte (1.1 μM; 2.0 μM) differentiation. ROS involvement was studied by quantifying the expression of ROS-regulated genes, measuring glutathione (GSH) levels, inhibiting GSH synthesis and co-exposing cells to the antioxidant N-acetylcysteine. Arsenite reduces NPC migration, neurogenesis and oligodendrogenesis of differentiating hNPC and rNPC at sub-cytotoxic concentrations. Species-specific arsenite cytotoxicity and induction of antioxidative gene expression is inversely related to GSH levels with rNPC possessing >3-fold the amount of GSH than hNPC. Inhibition of GSH synthesis increased the sensitivity towards arsenite in rNPC > hNPC. N-acetylcysteine antagonized arsenite-mediated induction of HMOX1 expression as well as reduction of neuronal and oligodendrocyte differentiation in hNPC suggesting involvement of oxidative stress in arsenite DNT. hNPC are more sensitive towards arsenite-induced neurodevelopmental toxicity than rNPC, probably due to their lower antioxidative defense capacities. This species-specific MoA data might be useful for adverse outcome pathway generation and future integrated risk assessment strategies concerning DNT.
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Affiliation(s)
- Stefan Masjosthusmann
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany
| | - Clara Siebert
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany
| | - Ulrike Hübenthal
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany
| | - Farina Bendt
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany
| | - Jenny Baumann
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany
| | - Ellen Fritsche
- IUF - Leibniz Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225, Duesseldorf, Germany; Heinrich-Heine University, Universitätsstr. 1, 40225, Düsseldorf, Germany.
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