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Hossen MS, Akter A, Azmal M, Rayhan M, Islam KS, Islam MM, Ahmed S, Abdullah-Al-Shoeb M. Unveiling the molecular basis of paracetamol-induced hepatotoxicity: Interaction of N-acetyl- p-benzoquinone imine with mitochondrial succinate dehydrogenase. Biochem Biophys Rep 2024; 38:101727. [PMID: 38766381 PMCID: PMC11098724 DOI: 10.1016/j.bbrep.2024.101727] [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: 12/20/2023] [Revised: 03/13/2024] [Accepted: 04/30/2024] [Indexed: 05/22/2024] Open
Abstract
Background and aim N-acetyl-p-benzoquinoneimine (NAPQI), a toxic byproduct of paracetamol (Acetaminophen, APAP), can accumulate and cause liver damage by depleting glutathione and forming protein adducts in the mitochondria. These adducts disrupt the respiratory chain, increasing superoxide production and reducing ATP. The goal of this study was to provide computational proof that succinate dehydrogenase (SDH), a subunit of complex II in the mitochondrial respiratory chain, is a favorable binding partner for NAPQI in this regard. Method Molecular docking, molecular dynamics simulation, protein-protein interaction networks (PPI), and KEGG metabolic pathway analysis were employed to identify binding characteristics, interaction partners, and their associations with metabolic pathways. A lipid membrane was added to the experimental apparatus to mimic the natural cellular environment of SDH. This modification made it possible to develop a context for investigating the role and interactions of SDH within a cellular ecosystem that was more realistic and biologically relevant. Result The molecular binding affinity score for APAP and NAPQI with SDH was predicted -6.5 and -6.7 kcal/mol, respectively. Furthermore, RMSD, RMSF, and Rog from the molecular dynamics simulations study revealed that NAPQI has slightly higher stability and compactness compared to APAP at 100 ns timeframe with mitochondrial SDH. Conclusion This study serves to predict the mechanistic process of paracetamol toxicity by using different computational approaches. In addition, this study will provide information about the drug target against APAP hepatotoxicity.
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Affiliation(s)
- Md Sahadot Hossen
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Adiba Akter
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Mahir Azmal
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Mostakim Rayhan
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Kazi Saiful Islam
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - Md Mahmodul Islam
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali 3814, Bangladesh
| | - Shamim Ahmed
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Mohammad Abdullah-Al-Shoeb
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
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2
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Akakpo JY, Olivos H, Shrestha B, Midey A, Jaeschke H, Ramachandran A. Spatial analysis of renal acetaminophen metabolism and its modulation by 4-methylpyrazole with DESI mass spectrometry imaging. Toxicol Sci 2024; 198:328-346. [PMID: 38291912 DOI: 10.1093/toxsci/kfae011] [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] [Indexed: 02/01/2024] Open
Abstract
Acute kidney injury (AKI) is a common complication in acetaminophen (APAP) overdose patients and can negatively impact prognosis. Unfortunately, N-acetylcysteine, which is the standard of care for the treatment of APAP hepatotoxicity does not prevent APAP-induced AKI. We have previously demonstrated the renal metabolism of APAP and identified fomepizole (4-methylpyrazole, 4MP) as a therapeutic option to prevent APAP-induced nephrotoxicity. However, the kidney has several functionally distinct regions, and the dose-dependent effects of APAP on renal response and regional specificity of APAP metabolism are unknown. These aspects were examined in this study using C57BL/6J mice treated with 300-1200 mg/kg APAP and mass spectrometry imaging (MSI) to provide spatial cues relevant to APAP metabolism and the effects of 4MP. We find that renal APAP metabolism and generation of the nonoxidative (APAP-GLUC and APAP-SULF) and oxidative metabolites (APAP-GSH, APAP-CYS, and APAP-NAC) were dose-dependently increased in the kidney. This was recapitulated on MSI which revealed that APAP overdose causes an accumulation of APAP and APAP GLUC in the inner medulla and APAP-CYS in the outer medulla of the kidney. APAP-GSH, APAP-NAC, and APAP-SULF were localized mainly to the outer medulla and the cortex where CYP2E1 expression was evident. Interestingly, APAP also induced a redistribution of reduced GSH, with an increase in oxidized GSH within the kidney cortex. 4MP ameliorated these region-specific variations in the formation of APAP metabolites in renal tissue sections. In conclusion, APAP metabolism has a distinct regional distribution within the kidney, the understanding of which provides insight into downstream mechanisms of APAP-induced nephrotoxicity.
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Affiliation(s)
- Jephte Yao Akakpo
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | | | | | - Anthony Midey
- Waters Corporation, Milford, Massachusetts 01757, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Anup Ramachandran
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
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3
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Ghosh P, Magee N, Akakpo JY, Ahamed F, Eppler N, Jones E, Yu Y, He L, Lebofsky M, Dai H, Jaeschke H, Ding WX, Zhang Y. Hepatocyte-specific deletion of small heterodimer partner protects mice against acetaminophen-induced hepatotoxicity via activation of Nrf2. Toxicol Sci 2023; 197:53-68. [PMID: 37792503 PMCID: PMC10734614 DOI: 10.1093/toxsci/kfad104] [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] [Indexed: 10/06/2023] Open
Abstract
Acetaminophen (APAP) overdose stands as the primary cause of acute liver failure in the United States. APAP hepatotoxicity involves hepatic glutathione (GSH) depletion and mitochondrial damage. To counteract the toxicity of APAP, the nuclear factor erythroid 2 like 2 (Nrf2) activates the expression of genes responsible for drug detoxification and GSH synthesis. In this study, we present evidence that the elimination of hepatocyte small heterodimer partner, a critical transcriptional repressor for liver metabolism, results in Nrf2 activation and protects mice from APAP-induced acute liver injury. Initial investigations conducted on wildtype (WT) mice revealed a swift downregulation of Shp mRNA within the first 24 h after APAP administration. Subsequent treatment of hepatocyte-specific Shp knockout (ShpHep-/-) mice with 300 mg/kg APAP for 2 h exhibited comparable bioactivation of APAP with that observed in the WT controls. However, a significant reduction in liver injury was observed in ShpHep-/- after APAP treatment for 6 and 24 h. The decreased liver injury correlated with a faster recovery of GSH, attributable to heightened expression of Nrf2 target genes involved in APAP detoxification and GSH synthesis. Moreover, in vitro studies revealed that SHP protein interacted with NRF2 protein, inhibiting the transcription of Nrf2 target genes. These findings hold relevance for humans, as overexpression of SHP hindered APAP-induced NRF2 activation in primary human hepatocytes. In conclusion, our studies have unveiled a novel regulatory axis involving SHP and NRF2 in APAP-induced acute liver injury, emphasizing SHP as a promising therapeutic target in APAP overdose-induced hepatotoxicity.
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Affiliation(s)
- Priyanka Ghosh
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Nancy Magee
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Jephte Y Akakpo
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Forkan Ahamed
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Natalie Eppler
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Elizabeth Jones
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yifan Yu
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Lily He
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Margitta Lebofsky
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hongyan Dai
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yuxia Zhang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
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4
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Li ZC, Xu FF, Fu JT, Ouyang SX, Cao Q, Yan YY, Li DJ, Shen FM, Ni M. Sting mutation attenuates acetaminophen-induced acute liver injury by limiting NLRP3 activation. Int Immunopharmacol 2023; 125:111133. [PMID: 38149573 DOI: 10.1016/j.intimp.2023.111133] [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: 07/17/2023] [Revised: 10/11/2023] [Accepted: 10/23/2023] [Indexed: 12/28/2023]
Abstract
Acetaminophen (N-acetyl-p-aminophenol; APAP), a widely used effective nonsteroidal anti-inflammatory drug, leads to acute liver injury at overdose worldwide. Evidence showed that the severity of liver injury associated with the subsequent involvement of inflammatory mediators and immune cells. The innate immune stimulator of interferon genes protein (STING) pathway was critical in modulating inflammation. Here, we show that STING was activated and inflammation was enhanced in the liver in APAP-overdosed C57BL/6J mice, and Sting mutation (Stinggt/gt) mice exhibited less liver damage. Multiplexing flow cytometry displayed that Sting mutation changed hepatic recruitment and replacement of macrophages/monocytes in APAP-overdosed mice, which was inclined to anti-inflammation. In addition, Sting mutation limited NLRP3 activation in the liver in APAP-overdosed mice, and inhibited the expression of inflammatory cytokines. Finally, MCC950, a potent and selective NLRP3 inhibitor, significantly ameliorated APAP-induced liver injury and inflammation. Besides, pretreatment of MCC950 in C57 mice resulted in changes of immune cells infiltration in the liver similar to Stinggt/gt mice. Our study revealed that STING played a crucial role in APAP-induced acute liver injury, possibly by maintaining liver immune cells homeostasis and inhibiting NLRP3 inflammasome activation, suggesting that inhibiting STING-NLRP3 pathway might be a potential therapeutic strategy for acute liver injury.
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Affiliation(s)
- Zi-Chen Li
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fang-Fang Xu
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiang-Tao Fu
- Department of Pharmacology, School of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Shen-Xi Ouyang
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qi Cao
- Department of Pharmacology, School of Pharmacy, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Yu-Ying Yan
- School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Dong-Jie Li
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fu-Ming Shen
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Min Ni
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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5
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Georgiou-Siafis SK, Tsiftsoglou AS. The Key Role of GSH in Keeping the Redox Balance in Mammalian Cells: Mechanisms and Significance of GSH in Detoxification via Formation of Conjugates. Antioxidants (Basel) 2023; 12:1953. [PMID: 38001806 PMCID: PMC10669396 DOI: 10.3390/antiox12111953] [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: 09/30/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
Glutathione (GSH) is a ubiquitous tripeptide that is biosynthesized in situ at high concentrations (1-5 mM) and involved in the regulation of cellular homeostasis via multiple mechanisms. The main known action of GSH is its antioxidant capacity, which aids in maintaining the redox cycle of cells. To this end, GSH peroxidases contribute to the scavenging of various forms of ROS and RNS. A generally underestimated mechanism of action of GSH is its direct nucleophilic interaction with electrophilic compounds yielding thioether GSH S-conjugates. Many compounds, including xenobiotics (such as NAPQI, simvastatin, cisplatin, and barbital) and intrinsic compounds (such as menadione, leukotrienes, prostaglandins, and dopamine), form covalent adducts with GSH leading mainly to their detoxification. In the present article, we wish to present the key role and significance of GSH in cellular redox biology. This includes an update on the formation of GSH-S conjugates or GSH adducts with emphasis given to the mechanism of reaction, the dependence on GST (GSH S-transferase), where this conjugation occurs in tissues, and its significance. The uncovering of the GSH adducts' formation enhances our knowledge of the human metabolome. GSH-hematin adducts were recently shown to have been formed spontaneously in multiples isomers at hemolysates, leading to structural destabilization of the endogenous toxin, hematin (free heme), which is derived from the released hemoglobin. Moreover, hemin (the form of oxidized heme) has been found to act through the Kelch-like ECH associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor-2 (Nrf2) signaling pathway as an epigenetic modulator of GSH metabolism. Last but not least, the implications of the genetic defects in GSH metabolism, recorded in hemolytic syndromes, cancer and other pathologies, are presented and discussed under the framework of conceptualizing that GSH S-conjugates could be regarded as signatures of the cellular metabolism in the diseased state.
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Affiliation(s)
| | - Asterios S. Tsiftsoglou
- Laboratory of Pharmacology, Department of Pharmaceutical Sciences, School of Health Sciences, Aristotle University of Thessaloniki (AUTh), 54124 Thessaloniki, Greece;
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6
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Cai C, Ma H, Peng J, Shen X, Zhen X, Yu C, Zhang P, Ji F, Wang J. USP25 regulates KEAP1-NRF2 anti-oxidation axis and its inactivation protects acetaminophen-induced liver injury in male mice. Nat Commun 2023; 14:3648. [PMID: 37339955 DOI: 10.1038/s41467-023-39412-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 06/13/2023] [Indexed: 06/22/2023] Open
Abstract
Nuclear factor erythroid 2-related factor 2 (NRF2) is a transcription factor responsible for mounting an anti-oxidation gene expression program to counter oxidative stress. Under unstressed conditions, Kelch-like ECH-associated protein 1 (KEAP1), an adaptor protein for CUL3 E3 ubiquitin ligase, mediates NRF2 ubiquitination and degradation. We show here that the deubiquitinase USP25 directly binds to KEAP1 and prevents KEAP1's own ubiquitination and degradation. In the absence of Usp25 or if the DUB is inhibited, KEAP1 is downregulated and NRF2 is stabilized, allowing the cells to respond to oxidative stress more readily. In acetaminophen (APAP) overdose-induced oxidative liver damage in male mice, the inactivation of Usp25, either genetically or pharmacologically, greatly attenuates liver injury and reduces the mortality rates resulted from lethal doses of APAP.
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Affiliation(s)
- Changzhou Cai
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China
| | - Huailu Ma
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310058, China
| | - Jin Peng
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China
| | - Xiang Shen
- Chaser Therapeutics, Inc., Hangzhou, Zhejiang, 310018, China
| | - Xinghua Zhen
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China
| | - Chaohui Yu
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China
| | - Pumin Zhang
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310058, China.
- Zhejiang Provincial Key Laboratory of Pancreatic Disease, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China.
- Cancer Center, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
| | - Feng Ji
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China.
| | - Jiewei Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310003, China.
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7
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Chilvery S, Yelne A, Khurana A, Saifi MA, Bansod S, Anchi P, Godugu C. Acetaminophen induced hepatotoxicity: An overview of the promising protective effects of natural products and herbal formulations. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 108:154510. [PMID: 36332383 DOI: 10.1016/j.phymed.2022.154510] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 08/06/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND The liver plays an important role in regulating the metabolic processes and is the most frequently targeted organ by toxic chemicals. Acetaminophen (APAP) is a well-known anti-allergic, anti-pyretic, non-steroidal anti-inflammatory drug (NSAID), which upon overdose leads to hepatotoxicity, the major adverse event of this over-the-counter drug. PURPOSE APAP overdose induced acute liver injury is the second most common cause that often requires liver transplantation worldwide, for which N-acetyl cysteine is the only synthetic drug clinically approved as an antidote. So, it was felt that there is a need for the novel therapeutic approach for the treatment of liver diseases with less adverse effects. This review provides detailed analysis of the different plant extracts; phytochemicals and herbal formulations for the amelioration of APAP-induced liver injury. METHOD The data was collected using different online resources including PubMed, ScienceDirect, Google Scholar, Springer, and Web of Science using keywords given below. RESULTS Over the past decades various reports have revealed that plant-based approaches may be a better treatment choice for the APAP-induced hepatotoxicity in pre-clinical experimental conditions. Moreover, herbal compounds provide several advantages over the synthetic drugs with fewer side effects, easy availability and less cost for the treatment of life-threatening diseases. CONCLUSION The current review summarizes the hepatoprotective effects and therapeutic mechanisms of various plant extracts, active phytoconstituents and herbal formulations with potential application against APAP induced hepatotoxicity as the numbers of hepatoprotective natural products are more without clinical relativity. Further, pre-clinical pharmacological research will contribute to the designing of natural products as medicines with encouraging prospects for clinical application.
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Affiliation(s)
- Shrilekha Chilvery
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Amit Yelne
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Amit Khurana
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Mohd Aslam Saifi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Sapana Bansod
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Pratibha Anchi
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India
| | - Chandraiah Godugu
- Department of Regulatory Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, India.
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8
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Rodrigues JA, Narasimhamurthy RK, Joshi MB, Dsouza HS, Mumbrekar KD. Pesticides Exposure-Induced Changes in Brain Metabolome: Implications in the Pathogenesis of Neurodegenerative Disorders. Neurotox Res 2022; 40:1539-1552. [PMID: 35781222 PMCID: PMC9515138 DOI: 10.1007/s12640-022-00534-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 11/25/2022]
Abstract
Pesticides have been used in agriculture, public health programs, and pharmaceuticals for many decades. Though pesticides primarily target pests by affecting their nervous system and causing other lethal effects, these chemical entities also exert toxic effects in inadvertently exposed humans through inhalation or ingestion. Mounting pieces of evidence from cellular, animal, and clinical studies indicate that pesticide-exposed models display metabolite alterations of pathways involved in neurodegenerative diseases. Hence, identifying common key metabolites/metabolic pathways between pesticide-induced metabolic reprogramming and neurodegenerative diseases is necessary to understand the etiology of pesticides in the rise of neurodegenerative disorders. The present review provides an overview of specific metabolic pathways, including tryptophan metabolism, glutathione metabolism, dopamine metabolism, energy metabolism, mitochondrial dysfunction, fatty acids, and lipid metabolism that are specifically altered in response to pesticides. Furthermore, we discuss how these metabolite alterations are linked to the pathogenesis of neurodegenerative diseases and to identify novel biomarkers for targeted therapeutic approaches.
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Affiliation(s)
- Joel Arvin Rodrigues
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India, 576104
| | - Rekha K Narasimhamurthy
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India, 576104
| | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India, 576104
| | - Herman Sunil Dsouza
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India, 576104
| | - Kamalesh Dattaram Mumbrekar
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India, 576104.
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9
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Myers AL. VOD/SOS and Alkylating Agents in the Hematopoietic Stem Cell Transplant Setting: New Insights and Further Questions. Transplant Cell Ther 2022; 28:179-180. [PMID: 35365336 DOI: 10.1016/j.jtct.2022.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Alan L Myers
- The University of Texas Health Science Center at Houston, Houston, TX, USA.
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10
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Huang Y, Xie Y, Yang D, Xiong M, Chen X, Wu D, Wang Q, Chen H, Zheng L, Huang K. Histone demethylase UTX aggravates acetaminophen overdose induced hepatotoxicity through dual mechanisms. Pharmacol Res 2022; 175:106021. [PMID: 34883214 DOI: 10.1016/j.phrs.2021.106021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/21/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022]
Abstract
Acetaminophen (APAP) overdose is a major cause of acute liver failure, while the underlying mechanisms of APAP hepatotoxicity are not fully understood. Recently, emerging evidence suggests that epigenetic enzymes play roles in APAP-induced liver injury. Here, we found that Utx (ubiquitously transcribed tetratricopeptide repeat, X chromosome, also known as KDM6A), a X-linked histone demethylase which removes the di- and tri-methyl groups from histone H3K27, was markedly induced in the liver of APAP-overdosed female mice. Hepatic deletion of Utx suppressed APAP overdose-induced hepatotoxicity in female but not male mice. RNA-sequencing analysis suggested that Utx deficiency in female mice upregulated antitoxic phase II conjugating enzymes, including sulfotransferase family 2 A member 1 (Sult2a1), thus reduces the amount of toxic APAP metabolites in injured liver; while Utx deficiency also alleviated ER stress through downregulating transcription of ER stress genes including Atf4, Atf3, and Chop. Mechanistically, Utx promoted transcription of ER stress related genes in a demethylase activity-dependent manner, while repressed Sult2a1 expression through mediating H3K27ac levels independent of its demethylase activity. Moreover, overexpression of Sult2a1 in the liver of female mice rescued APAP-overdose induced liver injury. Together, our results indicated a novel UTX-Sult2a1 axis for the prevention or treatment of APAP-induced liver injury.
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Affiliation(s)
- Yixue Huang
- Tongji School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yunhao Xie
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Dong Yang
- Tongji School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Mingrui Xiong
- Tongji School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xingrui Chen
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Di Wu
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Qing Wang
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Hong Chen
- Tongji School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ling Zheng
- Hubei Key Laboratory of Cell Homeostasis, Frontier Science Center for Immunology and Metabolism, College of Life Sciences, Wuhan University, Wuhan 430072, China.
| | - Kun Huang
- Tongji School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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11
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Kim SH, Choi HJ, Seo H, Kwon D, Yun J, Jung YS. Downregulation of Glutathione-Mediated Detoxification Capacity by Binge Drinking Aggravates Acetaminophen-Induced Liver Injury through IRE1α ER Stress Signaling. Antioxidants (Basel) 2021; 10:antiox10121949. [PMID: 34943052 PMCID: PMC8750905 DOI: 10.3390/antiox10121949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 11/16/2022] Open
Abstract
Overdose of acetaminophen (APAP) can cause severe liver injury. Although alcohol is considered a risk factor for APAP toxicity, the mechanism underlying the interaction between alcohol and APAP remains unclear. Binge alcohol (5 g/kg every 12 h, 3 doses) reduced the concentration of cysteine and glutathione (GSH) and decreased expression of cystathionine β-synthase (CβS), cystathionine γ-lyase (CγL), and glutamate cysteine ligase catalytic subunit (GCLC) in the livers of male C57BL/6 mice. Furthermore, the levels of GSH S-transferase (GST) and GSH peroxidase (GPx) were decreased. To evaluate the effect of binge drinking on APAP-induced liver injury, 300 mg APAP was administered following alcohol binges. APAP in the binge group significantly amplified the serum ALT more than two fold and enhanced the pro-apoptotic proteins with a severe centrilobular necrosis compared to APAP alone. APAP treatment after alcohol binges caused lower levels of hepatic cysteine and GSH than APAP alone over 24 h, indicating that alcohol binges reduced GSH regenerating potential. Exposure to APAP after binge treatment significantly increased oxidative stress (lipid peroxidation) and endoplasmic reticulum (ER) stress (Grp78 and ATF6) markers at 6 h after treatment. Notably, the IRE1α/ASK1/MKK4/JNK pathway was activated, whereas CHOP expression was reduced by APAP administration in mice with pre-exposed alcohol binges compared with APAP alone. Thus, pretreatment with binge alcohol decreases GSH-mediated antioxidant capacity and contributes to augmentation of liver injury caused by subsequent APAP administration through differential ER stress signaling pathway.
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Affiliation(s)
- Sou Hyun Kim
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.H.K.); (H.J.C.); (H.S.)
- Research Institute for Drug Development, Pusan National University, Busan 46241, Korea
| | - Hun Ji Choi
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.H.K.); (H.J.C.); (H.S.)
- Research Institute for Drug Development, Pusan National University, Busan 46241, Korea
| | - Hyeji Seo
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.H.K.); (H.J.C.); (H.S.)
- Research Institute for Drug Development, Pusan National University, Busan 46241, Korea
| | - Doyoung Kwon
- College of Pharmacy, Jeju National University, Jeju 63243, Korea;
| | - Jaesuk Yun
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea
- Correspondence: (J.Y.); (Y.-S.J.); Tel.: +82-43-261-2827 (J.Y.); +82-51-510-2816 (Y.-S.J.)
| | - Young-Suk Jung
- Department of Pharmacy, College of Pharmacy, Pusan National University, Busan 46241, Korea; (S.H.K.); (H.J.C.); (H.S.)
- Research Institute for Drug Development, Pusan National University, Busan 46241, Korea
- Correspondence: (J.Y.); (Y.-S.J.); Tel.: +82-43-261-2827 (J.Y.); +82-51-510-2816 (Y.-S.J.)
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12
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Göldner V, Fangmeyer J, Karst U. Development of an electrochemical flow-through cell for the fast and easy generation of isotopically labeled metabolite standards. Drug Test Anal 2021; 14:262-268. [PMID: 34634186 DOI: 10.1002/dta.3175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/30/2021] [Indexed: 02/06/2023]
Abstract
In drug development, metabolite standards of new chemical entities are required for a comprehensive safety evaluation. Stable isotope-labeled internal metabolite standards at the milligram scale, which are difficult and expensive to synthesize in common bottom-up approaches, are necessary for metabolite quantification using liquid chromatography/mass spectrometry. A preparative electrochemical flow-through cell is presented here as a powerful tool for the cheap and straightforward synthesis of milligram amounts of isotopically labeled metabolite standards. The developed cell scales up established, so-called "coulometric" electrochemical cells. Problems like electrode fouling and cross contamination between syntheses are addressed by the use of exchangeable working electrodes. The applicability of the developed cell for the synthesis of metabolite standards is demonstrated using isotopically labeled acetaminophen as a model system for the generation of a biologically relevant phase II metabolite.
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Affiliation(s)
- Valentin Göldner
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany.,International Graduate School for Battery Chemistry, Characterization, Analysis, Recycling and Application (BACCARA), University of Münster, Münster, Germany
| | - Jens Fangmeyer
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany.,International Graduate School for Battery Chemistry, Characterization, Analysis, Recycling and Application (BACCARA), University of Münster, Münster, Germany
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13
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Fukami T, Yokoi T, Nakajima M. Non-P450 Drug-Metabolizing Enzymes: Contribution to Drug Disposition, Toxicity, and Development. Annu Rev Pharmacol Toxicol 2021; 62:405-425. [PMID: 34499522 DOI: 10.1146/annurev-pharmtox-052220-105907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Most clinically used drugs are metabolized in the body via oxidation, reduction, or hydrolysis reactions, which are considered phase I reactions. Cytochrome P450 (P450) enzymes, which primarily catalyze oxidation reactions, contribute to the metabolism of over 50% of clinically used drugs. In the last few decades, the function and regulation of P450s have been extensively studied, whereas the characterization of non-P450 phase I enzymes is still incomplete. Recent studies suggest that approximately 30% of drug metabolism is carried out by non-P450 enzymes. This review summarizes current knowledge of non-P450 phase I enzymes, focusing on their roles in controlling drug efficacy and adverse reactions as an important aspect of drug development. Expected final online publication date for the Annual Review of Pharmacology and Toxicology, Volume 62 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Tatsuki Fukami
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
| | - Tsuyoshi Yokoi
- Department of Drug Safety Sciences, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550, Japan
| | - Miki Nakajima
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
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14
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Truong VL, Jun M, Jeong WS. Phytochemical and Over-The-Counter Drug Interactions: Involvement of Phase I and II Drug-Metabolizing Enzymes and Phase III Transporters. J Med Food 2021; 24:786-805. [PMID: 34382862 DOI: 10.1089/jmf.2021.k.0003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Consumption of plant-derived natural products and over-the-counter (OTC) drugs is increasing on a global scale, and studies of phytochemical-OTC drug interactions are becoming more significant. The intake of dietary plants and herbs rich in phytochemicals may affect drug-metabolizing enzymes (DMEs) and transporters. These effects may lead to alterations in pharmacokinetics and pharmacodynamics of OTC drugs when concomitantly administered. Some phytochemical-drug interactions benefit patients through enhanced efficacy, but many interactions cause adverse effects. This review discusses possible mechanisms of phytochemical-OTC drug interactions mediated by phase I and II DMEs and phase III transporters. In addition, current information is summarized for interactions between phytochemicals derived from fruits, vegetables, and herbs and OTC drugs, and counseling is provided on appropriate and safe use of OTC drugs.
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Affiliation(s)
- Van-Long Truong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
| | - Mira Jun
- Brain Busan 21 Plus Program, Department of Food Science and Nutrition, Graduate School, Center for Silver-Targeted Biomaterials, Dong-A University, Busan, Korea
| | - Woo-Sik Jeong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
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15
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Ogiso T, Fukami T, Zhongzhe C, Konishi K, Nakano M, Nakajima M. Human superoxide dismutase 1 attenuates quinoneimine metabolite formation from mefenamic acid. Toxicology 2020; 448:152648. [PMID: 33259822 DOI: 10.1016/j.tox.2020.152648] [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: 08/12/2020] [Revised: 11/13/2020] [Accepted: 11/25/2020] [Indexed: 10/22/2022]
Abstract
Mefenamic acid (MFA), one of the nonsteroidal anti-inflammatory drugs (NSAIDs), sometimes causes liver injury. Quinoneimines formed by cytochrome P450 (CYP)-mediated oxidation of MFA are considered to be causal metabolites of the toxicity and are detoxified by glutathione conjugation. A previous study reported that NAD(P)H:quinone oxidoreductase 1 (NQO1) can reduce the quinoneimines, but NQO1 is scarcely expressed in the human liver. The purpose is to identify enzyme(s) responsible for the decrease in MFA-quinoneimine formation in the human liver. The formation of MFA-quinoneimine by recombinant CYP1A2 and CYP2C9 was significantly decreased by the addition of human liver cytosol, and the extent of the decrease in the metabolite formed by CYP1A2 was larger than that by CYP2C9. By column chromatography, superoxide dismutase 1 (SOD1) was identified from the human liver cytosol as an enzyme decreasing MFA-quinoneimine formation. Addition of recombinant SOD1 into the reaction mixture decreased the formation of MFA-quinoneimine from MFA by recombinant CYP1A2. By a structure-activity relationship study, we found that SOD1 decreased the formation of quinoneimines from flufenamic acid and tolfenamic acid, but did not affect those produced from acetaminophen, amodiaquine, diclofenac, and lapatinib. Thus, SOD1 may selectively decrease the quinoneimine formation from fenamate-class NSAIDs. To examine whether SOD1 can attenuate cytotoxicity caused by MFA, siRNA for SOD1 was transfected into CYP1A2-overexpressed HepG2 cells. The leakage of lactate dehydrogenase caused by MFA treatment was significantly increased by knockdown of SOD1. In conclusion, we found that SOD1 can serve as a detoxification enzyme for quinoneimines to protect from drug-induced toxicity.
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Affiliation(s)
- Takuo Ogiso
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
| | - Tatsuki Fukami
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan.
| | - Cheng Zhongzhe
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
| | - Keigo Konishi
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masataka Nakano
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | - Miki Nakajima
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
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16
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McGill MR, Hinson JA. The development and hepatotoxicity of acetaminophen: reviewing over a century of progress. Drug Metab Rev 2020; 52:472-500. [PMID: 33103516 DOI: 10.1080/03602532.2020.1832112] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Acetaminophen (APAP) was first synthesized in the 1800s, and came on the market approximately 65 years ago. Since then, it has become one of the most used drugs in the world. However, it is also a major cause of acute liver failure. Early investigations of the mechanisms of toxicity revealed that cytochrome P450 enzymes catalyze formation of a reactive metabolite in the liver that depletes glutathione and covalently binds to proteins. That work led to the introduction of N-acetylcysteine (NAC) as an antidote for APAP overdose. Subsequent studies identified the reactive metabolite N-acetyl-p-benzoquinone imine, specific P450 enzymes involved, the mechanism of P450-mediated oxidation, and major adducted proteins. Significant gaps remain in our understanding of the mechanisms downstream of metabolism, but several events appear critical. These events include development of an initial oxidative stress, reactive nitrogen formation, altered calcium flux, JNK activation and mitochondrial translocation, inhibition of mitochondrial respiration, the mitochondrial permeability transition, and nuclear DNA fragmentation. Additional research is necessary to complete our knowledge of the toxicity, such as the source of the initial oxidative stress, and to greatly improve our understanding of liver regeneration after APAP overdose. A better understanding of these mechanisms may lead to additional treatment options. Even though NAC is an excellent antidote, its effectiveness is limited to the first 16 hours following overdose.
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Affiliation(s)
- Mitchell R McGill
- Department of Environmental and Occupational Health, Fay W. Boozman College of Public Health, Little Rock, AR, USA.,Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Jack A Hinson
- Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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17
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Umbaugh DS, Jaeschke H. Extracellular vesicles: Roles and applications in drug-induced liver injury. Adv Clin Chem 2020; 102:63-125. [PMID: 34044913 DOI: 10.1016/bs.acc.2020.08.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Extracellular vesicles (EV) are defined as nanosized particles, with a lipid bilayer, that are unable to replicate. There has been an exponential increase of research investigating these particles in a wide array of diseases and deleterious states (inflammation, oxidative stress, drug-induced liver injury) in large part due to increasing recognition of the functional capacity of EVs. Cells can package lipids, proteins, miRNAs, DNA, and RNA into EVs and send these discrete packages of molecular information to distant, recipient cells to alter the physiological state of that cell. EVs are innately heterogeneous as a result of the diverse molecular pathways that are used to generate them. However, this innate heterogeneity of EVs is amplified due to the diversity in isolation techniques and lack of standardized nomenclature in the literature making it unclear if one scientist's "exosome" is another scientist's "microvesicle." One goal of this chapter is to provide the contextual understanding of EV origin so one can discern between divergent nomenclature. Further, the chapter will explore the potential protective and harmful roles that EVs play in DILI, and the potential of EVs and their cargo as a biomarker. The use of EVs as a therapeutic as well as a vector for therapeutic delivery will be discussed.
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Affiliation(s)
- David S Umbaugh
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, KS, United States
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, KS, United States.
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18
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Stefanello ST, de Carvalho NR, Reis SB, Soares FAA, Barcelos RP. Acetaminophen Oxidation and Inflammatory Markers - A Review of Hepatic Molecular Mechanisms and Preclinical Studies. Curr Drug Targets 2020; 21:1225-1236. [PMID: 32386489 DOI: 10.2174/1389450121666200510014418] [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: 11/01/2019] [Revised: 01/06/2020] [Accepted: 02/21/2020] [Indexed: 11/22/2022]
Abstract
Acetaminophen is a widely used analgesic for pain management, especially useful in chronic diseases, such as rheumatoid arthritis. However, easy access to this medicine has increased the occurrence of episodes of poisoning. Patients often develop severe liver damage, which may quickly lead to death. Consequently, numerous studies have been conducted to identify new biomarkers that allow the prediction of the degree of acetaminophen intoxication and thus intervene in a timely manner to save patients' lives. This review highlights the main mechanisms of the induction and progression of liver damage arising from acetaminophen poisoning. In addition, we have discussed the possibility of using new clinical biomarkers for detecting acetaminophen poisoning.
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Affiliation(s)
- Silvio Terra Stefanello
- Programa de Pos-Graduacao em Bioquimica Toxicologica, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Brazil
| | | | - Simone Beder Reis
- Institudo de Ciencias Biologicas (ICB), Programa de Posgraduacao em Bioexperimentacao, Universidade de Passo Fundo, Passo Fundo, Brazil
| | - Felix Alexandre Antunes Soares
- Programa de Pos-Graduacao em Bioquimica Toxicologica, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Brazil
| | - Rômulo Pillon Barcelos
- Programa de Pos-Graduacao em Bioquimica Toxicologica, Centro de Ciencias Naturais e Exatas (CCNE), Universidade Federal de Santa Maria, Brazil
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19
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Li S, Leeming MG, O'Hair RAJ. What are the Potential Sites of DNA Attack by N-Acetyl-p-benzoquinone Imine (NAPQI)? Aust J Chem 2020. [DOI: 10.1071/ch19361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metabolic bioactivation of small molecules can produce electrophilic metabolites that can covalently modify proteins and DNA. Paracetamol (APAP) is a commonly used over-the-counter analgesic, and its hepatotoxic side effects have been postulated to be due to the formation of the electrophilic metabolite N-acetylbenzoquinone imine (NAPQI). It has been established that NAPQI reacts to form covalent bonds to the side-chain functional groups of cysteine, methionine, tyrosine, and tryptophan residues. While there have been scattered reports that APAP can form adducts with DNA the nature of these adducts have not yet been fully characterised. Here the four deoxynucleosides, deoxyguanosine (dG), deoxyadenosine (dA), deoxycytidine (dC), and deoxythymidine (dT) were reacted with NAPQI and the formation of adducts was profiled using liquid chromatography–mass spectrometry with positive-ion mode electrospray ionisation and collision-induced dissociation. Covalent adducts were detected for dG, dA, and dC and tandem mass spectrometry (MS/MS) spectra revealed common neutral losses of deoxyribose (116 amu) arising from cleavage of the glyosidic bond with formation of the modified nucleobase. Of the four deoxynucleosides, dC proved to be the most reactive, followed by dG and dA. A pH dependence was found, with greater reactivity being observed at pH 5.5. The results of density functional theory calculations aimed at understanding the relative reactivities of the four deoxynucleosides towards NAPQI are described.
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20
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SPHK1 deficiency protects mice from acetaminophen-induced ER stress and mitochondrial permeability transition. Cell Death Differ 2019; 27:1924-1937. [PMID: 31827236 DOI: 10.1038/s41418-019-0471-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 12/11/2022] Open
Abstract
Acetaminophen (APAP) is the leading cause of drug-induced acute liver failure. Sphingosine-1-phosphate (S1P), whose formation is catalyzed by sphingosine kinase (SPHK)-1 or -2, is a bioactive lipid implicated in human health and disease. Here, we show that APAP-treated sphK1-deficient (sphK1-/-) mice exhibited markedly less liver damage and reduced inflammation compared with the wild-type mice. SPHK1 deficiency alleviated APAP-induced endoplasmic reticulum (ER) stress by affecting the phosphorylation of inositol-requiring enzyme 1α (IRE1α) and protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK)-eukaryotic translation initiation factor 2α (eIF2α), levels of activating transcription factor 4 (ATF4), and activation of activating transcription factor 6 (ATF6). SPHK1 deficiency also inhibited mitochondrial permeability transition (MPT), as evidenced by the impaired phosphorylation of JNK, apoptosis signal-regulated kinase 1 (ASK1), and glycogen synthase kinase 3β (GSK3β). In addition, SPHK1 deficiency reduced the levels of histone deacetylase and promoted the acetylation of p65 and STAT1, thereby impairing the transcription of inflammatory genes. Supplementation with exogenous S1P significantly reversed the activation of the PERK-eIF2α-ATF4 pathway and ATF6 during ER stress as well as the activation of GSK3β, ASK1, and JNK during MPT. Both FTY720, a functional S1P receptor antagonist, and PF543, an SPHK1 inhibitor, significantly ameliorated APAP-induced liver injury and improved animal survival. Our study reveals a critical role for SPHK1 in mediating APAP-induced hepatotoxicity by promoting ER stress and MPT.
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21
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García-Román R, Francés R. Acetaminophen-Induced Liver Damage in Hepatic Steatosis. Clin Pharmacol Ther 2019; 107:1068-1081. [PMID: 31638270 DOI: 10.1002/cpt.1701] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/17/2019] [Indexed: 12/19/2022]
Abstract
One of the most used painkillers is acetaminophen (APAP), which is safe at the right dose. However, several studies have described populations susceptible to APAP-induced liver damage, mainly in livers with steatosis. Thus, clinicians should consider the presence of obesity and other chronic liver diseases like nonalcoholic fatty liver disease (NAFLD) when indicating treatment with APAP. Liver damage from this drug is generated through its metabolite N-acetyl-p-benzoquinone imine, which is detoxified with glutathione (GSH). Prior depletion of GSH in steatotic hepatocytes plays a key role in APAP-induced hepatotoxicity in people with obesity and NAFLD. The knowledge about the damage to the liver or APAP in susceptible people like the obese and those with NAFLD is of great relevance for the sanitary sector because it would imply strategies of different therapeutic approach in such patients. This paper reviews the role of APAP in liver damage in the presence of obesity, NAFLD, and nonalcoholic steatohepatitis.
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Affiliation(s)
| | - Rubén Francés
- Liver and Intestinal Immunobiology Group, Department of Clinical Medicine, Miguel Hernández University, San Juan Alicante, Spain.,ISABIAL-FISABIO Foundation, General University Hospital of Alicante, Alicante, Spain.,CIBERehd, Health Institute Carlos III, Madrid, Spain
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22
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Geib T, Lento C, Wilson DJ, Sleno L. Liquid Chromatography-Tandem Mass Spectrometry Analysis of Acetaminophen Covalent Binding to Glutathione S-Transferases. Front Chem 2019; 7:558. [PMID: 31457004 PMCID: PMC6700392 DOI: 10.3389/fchem.2019.00558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/22/2019] [Indexed: 01/12/2023] Open
Abstract
Acetaminophen (APAP)-induced hepatotoxicity is the most common cause of acute liver failure in the Western world. APAP is bioactivated to N-acetyl p-benzoquinone imine (NAPQI), a reactive metabolite, which can subsequently covalently bind to glutathione and protein thiols. In this study, we have used liquid chromatography-tandem mass spectrometry (LC-MS/MS) to characterize NAPQI binding to human glutathione S-transferases (GSTs) in vitro. GSTs play a crucial role in the detoxification of reactive metabolites and therefore are interesting target proteins to study in the context of APAP covalent binding. Recombinantly-expressed and purified GSTs were used to assess NAPQI binding in vitro. APAP biotransformation to NAPQI was achieved using rat liver microsomes or human cytochrome P450 Supersomes in the presence of GSTA1, M1, M2, or P1. Resulting adducts were analyzed using bottom-up proteomics, with or without LC fractionation prior to LC-MS/MS analysis on a quadrupole-time-of-flight instrument with data-dependent acquisition (DDA). Targeted methods using multiple reaction monitoring (MRM) on a triple quadrupole platform were also developed by quantitatively labeling all available cysteine residues with a labeling reagent yielding isomerically-modified peptides following enzymatic digestion. Seven modified cysteine sites were confirmed, including Cys112 in GSTA1, Cys78 in GSTM1, Cys115 and 174 in GSTM2, as well as Cys15, 48, and 170 in GSTP1. Most modified peptides could be detected using both untargeted (DDA) and targeted (MRM) approaches, however the latter yielded better detection sensitivity with higher signal-to-noise and two sites were uniquely found by MRM.
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Affiliation(s)
- Timon Geib
- Chemistry Department, Université du Québec à Montréal, Montréal, QC, Canada
| | - Cristina Lento
- Department of Chemistry, The Centre for Research in Mass Spectrometry, York University, Toronto, ON, Canada
| | - Derek J Wilson
- Department of Chemistry, The Centre for Research in Mass Spectrometry, York University, Toronto, ON, Canada
| | - Lekha Sleno
- Chemistry Department, Université du Québec à Montréal, Montréal, QC, Canada
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23
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Liu S, Ding R, Nie X. Assessment of oxidative stress of paracetamol to Daphnia magna via determination of Nrf1 and genes related to antioxidant system. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 211:73-80. [PMID: 30954018 DOI: 10.1016/j.aquatox.2019.03.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/21/2019] [Accepted: 03/21/2019] [Indexed: 06/09/2023]
Abstract
Paracetamol (APAP) is one of the most widely used anti-inflammatory and analgesic drugs in human being health care and has been universally detected in various aquatic environments. However, its potential adverse effects and toxic mechanisms on freshwater invertebrates still remain unclear. In the present study, the effects of APAP on the expressions of Nrf1 and the antioxidant related genes including GCLC, GST, GPX, CAT, TRX, TrxR and Prx1 in Daphnia magna (D. magna) were evaluated after 24, 48 and 96 h, and the changes of GPX, GST and CAT enzyme activities, as well as the GSH and MDA content under APAP exposure for 48 h were also determined. Results showed that paracetamol affected the expressions of Nrf1 and antioxidant related genes in D. magna, which were related to the exposure time and concentration of APAP. Nrf1 was inhibited at 48 h, but induced at 96 h under the APAP exposure, being about two fold of the control in 5.0 μg/L. CAT were significantly induced in all treatments. But Prx decreased in an concentration-dependent manner in all treatments. In comparison with the mRNA expression, antioxidant enzymes activity displayed less changes in D. magna. Overall, APAP exposure altered the expression of Nrf1 and genes related to antioxidant system and disturbed the redox homeostasis of D. magna.
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Affiliation(s)
- Sijia Liu
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Rui Ding
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Xiangping Nie
- Department of Ecology, Jinan University, Guangzhou, 510632, China; Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, Jinan University, Guangzhou, 510632, China.
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Han S, Ray JW, Pathak P, Sweet DR, Zhang R, Gao H, Jain N, Koritzinsky EH, Matoba K, Xu W, Chan ER, Simon DI, Jain MK. KLF15 regulates endobiotic and xenobiotic metabolism. Nat Metab 2019; 1:422-430. [PMID: 32694878 DOI: 10.1038/s42255-019-0054-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 03/08/2019] [Indexed: 01/06/2023]
Abstract
Hepatic metabolism and elimination of endobiotics (for example, steroids, bile acids) and xenobiotics (for example, drugs, toxins) is essential for health. While the enzymatic (termed phase I-II) and transport machinery (termed phase III) controlling endobiotic and xenobiotic metabolism (EXM) is known, understanding of molecular nodal points that coordinate EXM function in physiology and disease remains incomplete. Here we show that the transcription factor Kruppel-like factor 15 (KLF15) regulates all three phases of the EXM system by direct and indirect pathways. Unbiased transcriptomic analyses coupled with validation studies in cells, human tissues, and animals, support direct transcriptional control of the EXM machinery by KLF15. Liver-specific deficiency of KLF15 (Li-KO) results in altered expression of numerous phase I-III targets, and renders animals resistant to the pathologic effects of bile acid and acetaminophen toxicity. Furthermore, Li-KO mice demonstrate enhanced degradation and elimination of endogenous steroid hormones, such as testosterone and glucocorticoid, resulting in reduced male fertility and blood glucose levels, respectively. Viral reconstitution of hepatic KLF15 expression in Li-KO mice reverses these phenotypes. Our observations identify a previously unappreciated transcriptional pathway regulating metabolism and elimination of endobiotics and xenobiotics.
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Affiliation(s)
- Shuxin Han
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA.
| | - Jonathan W Ray
- Department of Physiology, Case Western Reserve University, Cleveland, OH, USA
- Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | - Preeti Pathak
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - David R Sweet
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Rongli Zhang
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Institute for Transformative Molecular Medicine Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Huiyun Gao
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Nisha Jain
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Erik H Koritzinsky
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Keiichiro Matoba
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Weixiong Xu
- Cleveland School of Science and Medicine at John Hay Campus, Cleveland, OH, USA
- College of Arts and Sciences, Ohio State University, Columbus, OH, USA
| | - E Ricky Chan
- Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, USA
| | - Daniel I Simon
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Mukesh K Jain
- Case Cardiovascular Research Institute Case Western Reserve University, Harrington Heart and Vascular Institute University Hospitals Cleveland Medical Center, Cleveland, OH, USA.
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Lakshmi T, Sri Renukadevi B, Senthilkumar S, Haribalan P, Parameshwari R, Vijayaraghavan R, Rajeshkumar S. Seed and bark extracts of Acacia catechu protects liver from acetaminophen induced hepatotoxicity by modulating oxidative stress, antioxidant enzymes and liver function enzymes in Wistar rat model. Biomed Pharmacother 2018; 108:838-844. [PMID: 30372895 DOI: 10.1016/j.biopha.2018.08.077] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/14/2018] [Accepted: 08/15/2018] [Indexed: 01/13/2023] Open
Abstract
In this study we investigated the hepatoprotective effects and possible mechanism of Acacia catechu in acetaminophen (APAP) induced hepatotoxicity using female Wistar rat model. Hepatotoxicity was induced by oral administration of acetaminophen (750 mg/kg body weight) for 24 h. The seed (400 mg/kg body weight) and bark (400 mg/kg body weight) extract's treated groups exhibited hepatoprotective effects and was compared with well-known clinical anti-dote N-acetylcysteine (NAC). When groups treated with acetaminophen, significant increase of liver weight/body weight ratio, liver function enzymes such as alanine aminotransferase (ALT), alkaline phosphatase (ALP) and aspartate aminotransferase (AST) and decrease of antioxidant enzymes such as glutathione (GSH) and superoxide dismutase (SOD) were observed. The histopathology of APAP treated groups also showed moderate degree of sinusoidal congestion, centrilobular necrosis with polymorph nuclear cells infiltration, marked vacuolations and congestion. However, pretreatment with seed or bark extract groups decreased LPO accumulation, reduced the liver function enzymes and increased antioxidant defense enzymes. Moreover, histopathology of seed extract treated groups showed normal architecture whereas bark extract treated groups exhibited mild degree of vacuolations in the hepatocytes with minimal sinusoidal congestion. Taken together, our study concludes that A. catechu seed extract to be a more promising agent for protecting liver from APAP induced hepatotoxicity.
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Affiliation(s)
- Thangavelu Lakshmi
- Department of Pharmacology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, India
| | - Balusamy Sri Renukadevi
- Department of Food Science and Biotechnology, Sejong University, Gwangjin-gu, Seoul 05006, Republic of Korea.
| | - Sivanesan Senthilkumar
- Department of Research & Development, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, India
| | - Perumalsamy Haribalan
- Research Institute for Agriculture and Life Science, Seoul National University, Seoul 08826, Republic of Korea
| | - R Parameshwari
- Department of Pharmacology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, India
| | - Rajagopalan Vijayaraghavan
- Department of Research & Development, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, India
| | - Shanmugam Rajeshkumar
- Department of Pharmacology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, India.
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Siegert M, Kranawetvogl A, Thiermann H, John H. Glutathione as an antidote for sulfur mustard poisoning: Mass spectrometric investigations of its potency as a chemical scavenger. Toxicol Lett 2018; 293:31-37. [DOI: 10.1016/j.toxlet.2017.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/08/2017] [Accepted: 12/20/2017] [Indexed: 11/16/2022]
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Sun Y, Li TY, Song L, Zhang C, Li J, Lin ZZ, Lin SC, Lin SY. Liver-specific deficiency of unc-51 like kinase 1 and 2 protects mice from acetaminophen-induced liver injury. Hepatology 2018; 67:2397-2413. [PMID: 29272037 DOI: 10.1002/hep.29759] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/17/2017] [Accepted: 12/18/2017] [Indexed: 12/12/2022]
Abstract
UNLABELLED unc-51-like autophagy activating kinase 1 and 2 (Ulk1/2) regulate autophagy initiation under various stress conditions. However, the physiological functions of these Ser/Thr kinases are not well characterized. Here, we show that mice with liver-specific double knockout (LDKO) of Ulk1 and Ulk2 (Ulk1/2 LDKO) are viable, but exhibit overt hepatomegaly phenotype. Surprisingly, Ulk1/2 LDKO mice display normal autophagic activity in hepatocytes upon overnight fasting, but are strongly resistant to acetaminophen (APAP)-induced liver injury. Further studies revealed that Ulk1/2 are also dispensable for APAP-induced autophagy process, but are essential for the maximum activation of c-Jun N-terminal kinase (JNK) signaling both in vivo and in isolated primary hepatocytes during APAP treatment. Mechanistically, APAP-induced inhibition of mechanistic target of rapamycin complex 1 releases Ulk1 from an inactive state. Activated Ulk1 then directly phosphorylates and increases the kinase activity of mitogen-activated protein kinase kinase 4 and 7 (MKK4/7), the upstream kinases and activator of JNK, and mediates APAP-induced liver injury. Ulk1-dependent phosphorylation of MKK7 was further confirmed by a context-dependent phosphorylation antibody. Moreover, activation of JNK and APAP-induced cell death was markedly attenuated in Mkk4/7 double knockdown hepatocytes reconstituted with an Ulk1-unphosphorylatable mutant of MKK7 compared to those in cells rescued with wild-type MKK7. CONCLUSION Together, these findings reveal an important role of Ulk1/2 for APAP-induced JNK activation and liver injury, and understanding of this regulatory mechanism may offer us new strategies for prevention and treatment of human APAP hepatotoxicity. (Hepatology 2018;67:2397-2413).
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Affiliation(s)
- Yu Sun
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Terytty Yang Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Lintao Song
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Cixiong Zhang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Jingyi Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Zhi-Zhong Lin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Sheng-Cai Lin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
| | - Shu-Yong Lin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian, China
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Wardman P. Nitroimidazoles as hypoxic cell radiosensitizers and hypoxia probes: misonidazole, myths and mistakes. Br J Radiol 2018; 92:20170915. [PMID: 29303355 DOI: 10.1259/bjr.20170915] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Nitroimidazoles have been extensively explored as hypoxic cell radiosensitizers but have had limited clinical success, with efficacy restricted by toxicity. However, they have proven clinically useful as probes for tumour hypoxia. Both applications, and probably much of the dose-limiting toxicities, reflect the dominant chemical property of electron affinity or ease of reduction, associated with the nitro substituent in an aromatic structure. This single dominant property affords unusual, indeed extraordinary flexibility in drug or probe design, suggesting further development is possible in spite of earlier limitations, in particular building on the benefit of hindsight and an appreciation of errors made in earlier studies. The most notable errors were: the delay in viewing cellular thiol depletion as a likely common artefact in testing in vitro; slow recognition of pH-driven concentration gradients when compounds were weak acids and bases; and a failure to explore the possible involvement of pH and ascorbate in influencing hypoxia probe binding. The experience points to the need to involve a wider range of expertise than that historically involved in many laboratories when studying the effects of chemicals on radiation response or using diagnostic probes.
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Affiliation(s)
- Peter Wardman
- Formerly of the Gray Cancer Institute, University of Oxford, CRUK/MRC Oxford Institute for Radiation Oncology, Oxford, UK
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Kim RO, Jo MA, Song J, Kim IC, Yoon S, Kim WK. Novel approach for evaluating pharmaceuticals toxicity using Daphnia model: analysis of the mode of cytochrome P450-generated metabolite action after acetaminophen exposure. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 196:35-42. [PMID: 29328974 DOI: 10.1016/j.aquatox.2017.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 12/22/2017] [Accepted: 12/30/2017] [Indexed: 06/07/2023]
Abstract
Because of its widespread use, the pharmaceutical acetaminophen (APAP) is frequently detected in aquatic environments. APAP can have serious physiological effects, such as reduced reproduction, low growth rates, and abnormal behavior, in aquatic organisms. However, the methods available for evaluation of the aquatic toxicity of APAP are of limited usefulness. The present study aimed to develop reliable and sensitive markers for evaluation of APAP toxicity using Daphnia as a model organism. We focused on N-acetyl-p-benzoquinoneimine (NAPQI) production from APAP via cytochrome P450 metabolism because NAPQI causes APAP toxicity. Daphnia magna were exposed to APAP (0, 50, or 100 mg/L for 12 h or 24 h), and the total metabolites were extracted and analyzed for NAPQI. Direct detection of NAPQI was difficult because of its high reactivity, and its peak was close to that for APAP. Therefore, we tried to identify molecular and biochemical indicators associated with NAPQI generation, elimination, and its interactions with macromolecules. We identified changes in CYP370A13 gene expression, glutathione depletion, inhibition of thioredoxin reductase activity, and production of reactive oxygen species as indicators of D. magna exposure to APAP. These indicators could be used to develop sensitive and accurate techniques to evaluate the environmental toxicity of APAP.
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Affiliation(s)
- Ryeo-Ok Kim
- System Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, South Korea
| | - Min-A Jo
- System Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, South Korea
| | - Jinhaeng Song
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea
| | - Il-Chan Kim
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, South Korea
| | - Seokjoo Yoon
- System Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, South Korea
| | - Woo-Keun Kim
- System Toxicology Research Center, Korea Institute of Toxicology, Daejeon 34114, South Korea.
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Caparrotta TM, Antoine DJ, Dear JW. Are some people at increased risk of paracetamol-induced liver injury? A critical review of the literature. Eur J Clin Pharmacol 2017; 74:147-160. [PMID: 29067481 PMCID: PMC5765191 DOI: 10.1007/s00228-017-2356-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/15/2017] [Indexed: 12/18/2022]
Abstract
Purpose Paracetamol is one of the world’s most commonly used drugs. In overdose, it is well established to be hepatotoxic. The aim of this review was to identify factors that have been, or actually are, associated with the development of liver injury after paracetamol exposure in humans. Method Google Scholar and PubMed were searched on various dates between December 2016 and March 2017. Papers identified had their references analysed for further studies that might be relevant. Results At the time of writing, there was little good quality clinical evidence—from studies of paracetamol overdose or therapeutic use—to suggest that any groups of people are relatively protected from, or are at greater risk of, liver injury. The factors that were historically used to indicate higher risk in the UK have no good quality clinical evidence to support their re-introduction into clinical practice. The safe (and still effective) oral dose of paracetamol in patients weighing less than 50 kg has not been established. Conclusion There is no patient group that is unequivocally at elevated risk of paracetamol-induced liver toxicity. We propose two clinical scenarios that warrant further research. Firstly, there is a need to establish whether the dose of paracetamol should be reduced in patients with low body weight. Secondly, if or when genomic information regarding individual patients becomes readily available to inform prescribing, we propose the contribution of the genome to paracetamol toxicity should be re-investigated with robustly designed studies. Such studies could enhance the safe use of one of the most frequently taken drugs. Electronic supplementary material The online version of this article (10.1007/s00228-017-2356-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Thomas M Caparrotta
- Speciality Registrar Clinical Pharmacology and Therapeutics, NHS Lothian, Edinburgh, UK
| | - Daniel J Antoine
- MRC Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - James W Dear
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK.
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Nguyen NU, Stamper BD. Polyphenols reported to shift APAP-induced changes in MAPK signaling and toxicity outcomes. Chem Biol Interact 2017; 277:129-136. [PMID: 28918124 DOI: 10.1016/j.cbi.2017.09.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/09/2017] [Accepted: 09/11/2017] [Indexed: 12/20/2022]
Abstract
Due to its widespread availability, acetaminophen (APAP) is the leading cause for drug-induced liver injury in many countries including United States and United Kingdom. When used as recommended, APAP is relatively safe. However, in overdose cases, increased metabolism of APAP to N-acetyl-para-benzoquinoneimine (NAPQI), a reactive metabolite, leads to glutathione (GSH) depletion, oxidative stress, and cellular injury. Throughout this process, a variety of factors play important roles in propagating toxicity, including c-Jun N-terminal kinase (JNK), a member of the mitogen-activated protein kinase (MAPK) family. Because of its involvement in multiple cellular processes, biomarkers associated with MAPK signaling have generated interest as a mechanistic target for protecting against APAP-induced liver injury and hepatocellular injury, in general. This review summarizes mechanistic details by which natural products, specifically those containing polyphenolic moieties, are capable of attenuating APAP-induced toxicity, at least in part through an ability to modulate MAPKs. These compounds include carnosic acid, chlorogenic acid, davallialactone, extracts from Hibiscus sabdariffa, quercetin-based compounds, and resveratrol. Despite variations in the experimental designs across these studies, common pathways and biomarkers were implicated in cytoprotection when polyphenolic compounds were given with APAP, such as enhanced antioxidant gene expression and reversal of APAP-induced changes in oxidative stress markers and MAPK signaling. Overall, an emphasis should be placed on method standardization for future studies if we are to gain a more in-depth understanding of how polyphenolic moieties contribute to cytoprotection during an APAP overdose event.
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Affiliation(s)
- Ngoc Uy Nguyen
- Pacific University College of Arts & Sciences, 2043 College Way UC #4882, Forest Grove, OR 97116, USA.
| | - Brendan David Stamper
- Pacific University School of Pharmacy, 222 S.E. 8th Avenue #451, Hillsboro, OR 97123, USA.
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Myers AL, Kawedia JD, Champlin RE, Kramer MA, Nieto Y, Ghose R, Andersson BS. Clarifying busulfan metabolism and drug interactions to support new therapeutic drug monitoring strategies: a comprehensive review. Expert Opin Drug Metab Toxicol 2017; 13:901-923. [PMID: 28766962 DOI: 10.1080/17425255.2017.1360277] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Busulfan (Bu) is an alkylating agent with a limited therapeutic margin and exhibits inter-patient variability in pharmacokinetics (PK). Despite decades of use, mechanisms of Bu PK-based drug-drug interactions (DDIs), as well as the negative downstream effects of these DDIs, have not been fully characterized. Areas covered: This article provides an overview of Bu PK, with a primary focus on how known and potentially unknown drug metabolism pathways influence Bu-associated DDIs. In addition, pharmacogenomics of Bu chemotherapy and Bu-related DDIs observed in the stem cell transplant clinic (SCT) are summarized. Finally the increasing importance of Bu therapeutic drug monitoring is highlighted. Expert opinion: Mechanistic studies of Bu metabolism have shown that in addition to GST isoenzymes, other oxidative enzymes (CYP, FMO) and ABC/MDR drug transporters likely contribute to the overall clearance of Bu. Despite many insights, results from clinical studies, especially in polypharmacy settings and between pediatric and adult patients, remain conflicting. Further basic science and clinical investigative efforts are required to fully understand the key factors determining Bu PK characteristics and its effects on complications after SCT. Improved TDM strategies are promising components to further investigate, for instance DDI mechanisms and patient outcomes, in the highly complex SCT treatment setting.
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Affiliation(s)
- Alan L Myers
- a Department of Pharmacy Research, Division of Pharmacy , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
| | - Jitesh D Kawedia
- a Department of Pharmacy Research, Division of Pharmacy , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
| | - Richard E Champlin
- b Department of Stem Cell Transplantation , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
| | - Mark A Kramer
- a Department of Pharmacy Research, Division of Pharmacy , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
| | - Yago Nieto
- b Department of Stem Cell Transplantation , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
| | - Romi Ghose
- c Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy , The University of Houston , Houston , TX , USA
| | - Borje S Andersson
- b Department of Stem Cell Transplantation , The University of Texas M.D. Anderson Cancer Center , Houston , TX , USA
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Castañeda-Arriaga R, Galano A. Exploring Chemical Routes Relevant to the Toxicity of Paracetamol and Its meta-Analogue at a Molecular Level. Chem Res Toxicol 2017; 30:1286-1301. [DOI: 10.1021/acs.chemrestox.7b00024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Romina Castañeda-Arriaga
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina.
Iztapalapa, C. P. 09340, México D. F., México
| | - Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina.
Iztapalapa, C. P. 09340, México D. F., México
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Zhang Y, den Braver-Sewradj SP, Vos JC, Vermeulen NPE, Commandeur JNM. Human glutathione S-transferases- and NAD(P)H:quinone oxidoreductase 1-catalyzed inactivation of reactive quinoneimines of amodiaquine and N-desethylamodiaquine: Possible implications for susceptibility to amodiaquine-induced liver toxicity. Toxicol Lett 2017; 275:83-91. [PMID: 28478157 DOI: 10.1016/j.toxlet.2017.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 04/29/2017] [Accepted: 05/03/2017] [Indexed: 01/16/2023]
Abstract
Amodiaquine (AQ), an antimalarial drug, widely prescribed in endemic areas of Africa and Asia, is used in combination with artesunate as recommended by the WHO. However, due to its idiosyncratic hepatotoxicity and agranulocytosis, the therapeutic use has been discontinued in most countries. Oxidative bioactivation to protein-reactive quinonimines (QIs) by hepatic cytochrome P450s and myeloperoxidase (MPO) have been suggested to be important mechanisms underlying AQ idiosyncratic toxicity. However, the inactivation of the reactive QIs by detoxifying enzymes such as human glutathione S-transferases (GSTs) and NAD(P)H:quinone oxidoreducatase 1 (NQO1) has not been characterized yet. In the present study, the activities of 15 recombinant human GSTs and NQO1 in the inactivation of reactive QIs of AQ and its pharmacological active metabolite, N-desethylamodiaquine (DEAQ) were investigated. The results showed that GSTP1-1, GSTA4-4, GSTM4-4, GSTM2-2 and GSTA2-2 (activity in decreasing order) were active isoforms in catalyzing GSH conjugation of reactive QIs of AQ and DEAQ. Additionally, NQO1 was shown to inactivate these QIs by reduction. Simulation of the variability of cytosolic GST-activity based on the hepatic GST contents from 22 liver donors, showed a large variation in cytosolic inactivation of QIs by GSH, especially at a reduced GSH-concentration. In conclusion, the present study demonstrates that a low hepatic expression of the active GSTs and NQO1 may increase the susceptibility of patients to AQ idiosyncratic hepatotoxicity.
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Affiliation(s)
- Yongjie Zhang
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicines and Systems (AIMMS), Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Shalenie P den Braver-Sewradj
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicines and Systems (AIMMS), Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - J Chris Vos
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicines and Systems (AIMMS), Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Nico P E Vermeulen
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicines and Systems (AIMMS), Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Jan N M Commandeur
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicines and Systems (AIMMS), Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands.
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Zhang L, Yang J, Jin C, Wu S, Lu X, Hu X, Sun Y, Cai Y. The effect of nuclear factor erythroid 2-related factor/antioxidant response element signalling pathway in the lanthanum chloride-induced impairment of learning and memory in rats. J Neurochem 2017; 140:463-475. [PMID: 27861875 DOI: 10.1111/jnc.13895] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/20/2016] [Accepted: 10/28/2016] [Indexed: 02/06/2023]
Abstract
Lanthanum exerts adverse effects on the central nervous system. However, the mechanism underlying these adverse effects has not been clarified. It is known that oxidative stress plays an important role in neurological injuries induced by harmful factors. Nuclear factor erythroid 2-related factor (Nrf2) is very important in the response to oxidative stress in tissues and cells. The purpose of this study was to explore the effect of lanthanum chloride (LaCl3 ) on the spatial learning and memory of rats and to determine whether the Nrf2/antioxidant response element pathway acts in the hippocampus. Four groups of Wistar rats were exposed to 0 mM, 9 mM, 18 mM or 36 mM LaCl3 through their drinking water from the day of birth to 2 months after weaning. The results showed that LaCl3 impaired the spatial learning and memory of the rats, damaged the neuronal ultrastructure, increased reactive oxygen species levels and significantly down-regulated Nrf2 as well as the mRNA and protein expression of Nrf2-regulated genes, including NADP(H): dehydrogenase quinone 1, haeme oxygenase-1, superoxide dismutase 2, glutathione peroxidase 1, glutathione-S-transferase, γ-glutamine cysteine synthase and glutathione reductase, in the hippocampus. This study suggests that LaCl3 can impair the spatial learning and memory of rats, possibly by perturbing the Nrf2/antioxidant response element signalling pathway.
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Affiliation(s)
- Lijin Zhang
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Jinghua Yang
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Cuihong Jin
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Shengwen Wu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Xiaobo Lu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Xiaoyu Hu
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Yaling Sun
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
| | - Yuan Cai
- Department of Toxicology, School of Public Health, China Medical University, Shenyang, Liaoning, China
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Kumagai Y, Abiko Y. Environmental Electrophiles: Protein Adducts, Modulation of Redox Signaling, and Interaction with Persulfides/Polysulfides. Chem Res Toxicol 2016; 30:203-219. [DOI: 10.1021/acs.chemrestox.6b00326] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yoshito Kumagai
- Environmental Biology Section, Faculty
of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Yumi Abiko
- Environmental Biology Section, Faculty
of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
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37
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Evidence-based selection of training compounds for use in the mechanism-based integrated prediction of drug-induced liver injury in man. Arch Toxicol 2016; 90:2979-3003. [PMID: 27659300 PMCID: PMC5104805 DOI: 10.1007/s00204-016-1845-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 08/29/2016] [Indexed: 12/16/2022]
Abstract
The current test systems employed by pharmaceutical industry are poorly predictive for drug-induced liver injury (DILI). The ‘MIP-DILI’ project addresses this situation by the development of innovative preclinical test systems which are both mechanism-based and of physiological, pharmacological and pathological relevance to DILI in humans. An iterative, tiered approach with respect to test compounds, test systems, bioanalysis and systems analysis is adopted to evaluate existing models and develop new models that can provide validated test systems with respect to the prediction of specific forms of DILI and further elucidation of mechanisms. An essential component of this effort is the choice of compound training set that will be used to inform refinement and/or development of new model systems that allow prediction based on knowledge of mechanisms, in a tiered fashion. In this review, we focus on the selection of MIP-DILI training compounds for mechanism-based evaluation of non-clinical prediction of DILI. The selected compounds address both hepatocellular and cholestatic DILI patterns in man, covering a broad range of pharmacologies and chemistries, and taking into account available data on potential DILI mechanisms (e.g. mitochondrial injury, reactive metabolites, biliary transport inhibition, and immune responses). Known mechanisms by which these compounds are believed to cause liver injury have been described, where many if not all drugs in this review appear to exhibit multiple toxicological mechanisms. Thus, the training compounds selection offered a valuable tool to profile DILI mechanisms and to interrogate existing and novel in vitro systems for the prediction of human DILI.
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38
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Glutathione - From antioxidant to post-translational modifier. Arch Biochem Biophys 2016; 595:64-7. [PMID: 27095218 DOI: 10.1016/j.abb.2015.11.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 04/24/2015] [Accepted: 09/14/2015] [Indexed: 01/16/2023]
Abstract
Helmut Sies is one of the leading investigators in the multiple roles of glutathione (GSH) in biology. He has pioneered work on the role of GSH in preventing oxidative stress, in transport of GSSG, in protection of protein thiols from irreversible oxidation through mixed disulfide formation and demonstrated a role of protein glutathionylation in response to hormonal stimulation well before redox signaling became a major subject of investigation. Here I will describe the roles of GSH in several aspects of biology, the work of my laboratory in those findings, and how Helmut Sies work influenced our studies.
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Signolet I, Chenouard R, Oca F, Barth M, Reynier P, Denis MC, Simard G. Recurrent Isolated Neonatal Hemolytic Anemia: Think About Glutathione Synthetase Deficiency. Pediatrics 2016; 138:peds.2015-4324. [PMID: 27581854 DOI: 10.1542/peds.2015-4324] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/15/2016] [Indexed: 11/24/2022] Open
Abstract
Hemolytic anemia (HA) of the newborn should be considered in cases of rapidly developing, severe, or persistent hyperbilirubinemia. Several causes of corpuscular hemolysis have been described, among which red blood cell enzyme defects are of particular concern. We report a rare case of red blood cell enzyme defect in a male infant, who presented during his first months of life with recurrent and isolated neonatal hemolysis. All main causes were ruled out. At 6.5 months of age, the patient presented with gastroenteritis requiring hospitalization; fortuitously, urine organic acid chromatography revealed a large peak of 5-oxoproline. Before the association between HA and 5-oxoprolinuria was noted, glutathione synthetase deficiency was suspected and confirmed by a low glutathione synthetase concentration and a collapse of glutathione synthetase activity in erythrocytes. Moreover, molecular diagnosis revealed 2 mutations in the glutathione synthetase gene: a previously reported missense mutation (c.[656A>G]; p.[Asp219Gly]) and a mutation not yet described in the binding site of the enzyme (c.[902T>C]; p.[Leu301Pro]). However, 15 days later, a control sample revealed no signs of 5-oxoprolinuria and the clinical history discovered administration of acetaminophen in the 48 hours before hospitalization. Thus, in this patient, acetaminophen exposure allowed the diagnosis of a mild form of glutathione synthetase deficiency, characterized by isolated HA. Early diagnosis is important because treatment with bicarbonate, vitamins C and E, and elimination of trigger factors are recommended to improve long-term outcomes. Glutathione synthetase deficiency should be screened for in cases of unexplained newborn HA.
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Affiliation(s)
- Isabelle Signolet
- Department of Biochemistry and Genetics, University Hospital, Angers, France
| | - Rachel Chenouard
- Department of Biochemistry and Genetics, University Hospital, Angers, France
| | - Florine Oca
- Department of Biochemistry and Genetics, University Hospital, Angers, France
| | - Magalie Barth
- Department of Biochemistry and Genetics, University Hospital, Angers, France
| | - Pascal Reynier
- Department of Biochemistry and Genetics, University Hospital, Angers, France
| | | | - Gilles Simard
- Department of Biochemistry and Genetics, University Hospital, Angers, France
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Simulation of interindividual differences in inactivation of reactive para -benzoquinone imine metabolites of diclofenac by glutathione S -transferases in human liver cytosol. Toxicol Lett 2016; 255:52-62. [DOI: 10.1016/j.toxlet.2016.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 01/11/2023]
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41
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den Braver-Sewradj SP, den Braver MW, Vermeulen NP, Commandeur JN, Richert L, Vos JC. Inter-donor variability of phase I/phase II metabolism of three reference drugs in cryopreserved primary human hepatocytes in suspension and monolayer. Toxicol In Vitro 2016; 33:71-9. [DOI: 10.1016/j.tiv.2016.02.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/18/2016] [Accepted: 02/21/2016] [Indexed: 12/20/2022]
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42
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PharmGKB summary: pathways of acetaminophen metabolism at the therapeutic versus toxic doses. Pharmacogenet Genomics 2016; 25:416-26. [PMID: 26049587 DOI: 10.1097/fpc.0000000000000150] [Citation(s) in RCA: 181] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Protective Activity of Total Polyphenols from Genista quadriflora Munby and Teucrium polium geyrii Maire in Acetaminophen-Induced Hepatotoxicity in Rats. Nutrients 2016; 8:193. [PMID: 27043622 PMCID: PMC4848662 DOI: 10.3390/nu8040193] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/13/2016] [Accepted: 03/21/2016] [Indexed: 02/06/2023] Open
Abstract
Oxidative stress is a major cause of drug-induced hepatic diseases and several studies have demonstrated that diet supplementation with plants rich in antioxidant compounds provides a variety of health benefits in these circumstances. Genista quadriflora Munby (Gq) and Teucrium polium geyrii Maire (Tp) are known to possess antioxidant and numerous biological properties and these endemic plants are often used for dietary or medicinal applications. Herein, we evaluated the beneficial effect of rich-polyphenol fractions of Gq and Tp to prevent Acetaminophen-induced liver injury and investigated the mechanisms involved in this protective action. Rats were orally administered polyphenolic extracts from Gq or Tp (300 mg/kg) or N-acetylcysteine (NAC: 200 mg/kg) once daily for ten days prior to the single oral administration of Acetaminophen (APAP: 1 g/kg). The results show that preventive administration of polyphenolic extracts from Gq or Tp exerts a hepatoprotective influence during APAP treatment by improving transaminases leakage and liver histology and stimulating antioxidant defenses. Besides, suppression of liver CYP2E1, GSTpi and TNF-α mRNA levels, with enhancement of mitochondrial bioenergetics may contribute to the observed hepatoprotection induced by Gq and Tp extracts. The effect of Tp extract is significantly higher (1.5–2 fold) than that of Gq extract and NAC regarding the enhancement of mitochondrial functionality. Overall, this study brings the first evidence that pretreatment with these natural extracts display in vivo protective activity against APAP hepatotoxicity through improving mitochondrial bioenergetics, oxidant status, phase I and II enzymes expression and inflammatory processes probably by virtue of their high total polyphenols content.
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Siegmund W, Modess C, Scheuch E, Methling K, Keiser M, Nassif A, Rosskopf D, Bednarski PJ, Borlak J, Terhaag B. Metabolic activation and analgesic effect of flupirtine in healthy subjects, influence of the polymorphic NAT2, UGT1A1 and GSTP1. Br J Clin Pharmacol 2015; 79:501-13. [PMID: 25264565 DOI: 10.1111/bcp.12522] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 09/20/2014] [Indexed: 12/19/2022] Open
Abstract
AIMS The rare association of flupirtine with liver injury is most likely caused by reactive quinone diimines and their oxidative formation may be influenced by the activities of N-acetyltransferases (NAT) that conjugate the less toxic metabolite D13223, and by glucuronosyltransferases (UGT) and glutathione S-transferases (GST) that generate stable terminal glucuronides and mercapturic acid derivatives, respectively. The influence of genetic polymorphisms of NAT2, UGT1A1 and GSTP1 on generation of the terminal mercapturic acid derivatives and analgesic effects was evaluated to identify potential genetic risk factors for hepatotoxicity of flupirtine. METHODS Metabolic disposition of flupirtine was measured after intravenous administration (100 mg), after swallowing an immediate-release (IR) tablet (100 mg) and after repeated administration of modified release (MR) tablets (400 mg once daily 8 days) in 36 selected healthy subjects. Analgesic effects were measured using pain models (delayed onset of muscle soreness, electric pain). RESULTS Flupirtine IR was rapidly but incompletely absorbed (∼ 72%). Repeated administration of flupirtine MR showed lower bioavailability (∼ 60%). Approximately 12% of bioavailable flupirtine IR and 8% of bioavailable flupiritine MR was eliminated as mercapturic acid derivatives into the urine independent of the UGT1A1, NAT2 and GSTP1 genotype. Carriers of variant GSTP1 alleles showed lower bioavailability but increased intestinal secretion of flupirtine and increased efficiency in experimental pain. Flupirtine was not a substrate for ABCB1 and ABCC2. CONCLUSIONS Formation of mercapturic acid derivatives is a major elimination route for flupirtine in man. However, the theoretically toxic pathway is not influenced by the frequent polymorphisms of UGT1A1, NAT2 and GSTP1.
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Affiliation(s)
- Werner Siegmund
- Department of Clinical Pharmacology, University Medicine Greifswald, Greifswald, Germany
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45
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Klopčič I, Poberžnik M, Mavri J, Dolenc MS. A quantum chemical study of the reactivity of acetaminophen (paracetamol) toxic metabolite N-acetyl-p-benzoquinone imine with deoxyguanosine and glutathione. Chem Biol Interact 2015; 242:407-14. [DOI: 10.1016/j.cbi.2015.11.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 10/16/2015] [Accepted: 11/03/2015] [Indexed: 12/17/2022]
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46
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Leeming MG, Gamon LF, Wille U, Donald WA, O'Hair RAJ. What Are the Potential Sites of Protein Arylation by N-Acetyl-p-benzoquinone Imine (NAPQI)? Chem Res Toxicol 2015; 28:2224-33. [PMID: 26523953 DOI: 10.1021/acs.chemrestox.5b00373] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acetaminophen (paracetamol, APAP) is a safe and widely used analgesic medication when taken at therapeutic doses. However, APAP can cause potentially fatal hepatotoxicity when taken in overdose or in patients with metabolic irregularities. The production of the electrophilic and putatively toxic compound N-acetyl-p-benzoquinone imine (NAPQI), which cannot be efficiently detoxicated at high doses, is implicated in APAP toxicity. Numerous studies have identified that excess NAPQI can form covalent linkages to the thiol side chains of cysteine residues in proteins; however, the reactivity of NAPQI toward other amino acid side chains is largely unexplored. Here, we report a survey of the reactivity of NAPQI toward 11 N-acetyl amino acid methyl esters and four peptides. (1)H NMR analysis reveals that NAPQI forms covalent bonds to the side-chain functional groups of cysteine, methionine, tyrosine, and tryptophan residues. Analogous reaction products were observed when NAPQI was reacted with synthetic model peptides GAIL-X-GAILR for X = Cys, Met, Tyr, and Trp. Tandem mass spectrometry peptide sequencing showed that the NAPQI modification sites are located on the "X" residue in each case. However, when APAP and the GAIL-X-GAILR peptide were incubated with rat liver microsomes that contain many metabolic enzymes, NAPQI formed by oxidative metabolism reacted with GAIL-C-GAILR exclusively. For the peptides where X = Met, Tyr, and Trp, competing reactions between NAPQI and alternative nucleophiles precluded arylation of the target peptide by NAPQI. Although Cys residues are favorably targeted under these conditions, these data suggest that NAPQI can, in principle, also damage proteins at Met, Tyr, and Trp residues.
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Affiliation(s)
- Michael G Leeming
- School of Chemistry and ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Bio21 Institute of Molecular Science and Biotechnology, University of Melbourne , Parkville, Victoria 3010, Australia
| | - Luke F Gamon
- School of Chemistry and ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Bio21 Institute of Molecular Science and Biotechnology, University of Melbourne , Parkville, Victoria 3010, Australia
| | - Uta Wille
- School of Chemistry and ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Bio21 Institute of Molecular Science and Biotechnology, University of Melbourne , Parkville, Victoria 3010, Australia
| | - William A Donald
- School of Chemistry, University of New South Wales , Sydney, NSW 2052, Australia
| | - Richard A J O'Hair
- School of Chemistry and ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Bio21 Institute of Molecular Science and Biotechnology, University of Melbourne , Parkville, Victoria 3010, Australia
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Abiko Y, Ishii I, Kamata S, Tsuchiya Y, Watanabe Y, Ihara H, Akaike T, Kumagai Y. Formation of Sulfur Adducts of N-Acetyl-p-benzoquinoneimine, an Electrophilic Metabolite of Acetaminophen in Vivo: Participation of Reactive Persulfides. Chem Res Toxicol 2015; 28:1796-802. [DOI: 10.1021/acs.chemrestox.5b00245] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yumi Abiko
- Environmental
Biology Section, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai,
Tsukuba, Ibaraki 305-8575, Japan
| | - Isao Ishii
- Department
of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo 105-8512, Japan
| | - Shotaro Kamata
- Department
of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo 105-8512, Japan
| | - Yukihiro Tsuchiya
- Laboratory
of Pharmacology, Showa Pharmaceutical University, Tokyo 194-8543, Japan
| | - Yasuo Watanabe
- Laboratory
of Pharmacology, Showa Pharmaceutical University, Tokyo 194-8543, Japan
| | - Hideshi Ihara
- Department
of Biological Science, Graduate School of Science, Osaka Prefecture University, Osaka 599-8531, Japan
| | - Takaaki Akaike
- Department
of Environmental Health Sciences and Molecular Toxicology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Yoshito Kumagai
- Environmental
Biology Section, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai,
Tsukuba, Ibaraki 305-8575, Japan
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48
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Investigation of acetaminophen toxicity in HepG2/C3a microscale cultures using a system biology model of glutathione depletion. Cell Biol Toxicol 2015; 31:173-85. [PMID: 25956491 DOI: 10.1007/s10565-015-9302-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/24/2015] [Indexed: 12/30/2022]
Abstract
We have integrated in vitro and in silico information to investigate acetaminophen (APAP) and its metabolite N-acetyl-p-benzoquinone imine (NAPQI) toxicity in liver biochip. In previous works, we observed higher cytotoxicity of HepG2/C3a cultivated in biochips when exposed to 1 mM of APAP for 72 h as compared to Petri cultures. We complete our investigation with the present in silico approach to extend the mechanistic interpretation of the intracellular kinetics of the toxicity process. For that purpose, we propose a mathematical model based on the coupling of a drug pharmacokinetic model (PK) with a systemic biology model (SB) describing the reactive oxygen species (ROS) production by NAPQI and the subsequent glutathione (GSH) depletion. The SB model was parameterized using (i) transcriptomic data, (ii) qualitative results of time lapses ROS fluorescent curves for both control and 1-mM APAP-treated experiments, and (iii) additional GSH literature data. The PK model was parameterized (i) using the in vitro kinetic data (at 160 μM, 1 mM, 10 mM), (ii) using the parameters resulting from a physiologically based pharmacokinetic (PBPK) literature model for APAP, and (iii) by literature data describing NAPQI formation. The PK-SB model predicted a ROS increase and GSH depletion due to the NAPQI formation. The transition from a detoxification phase and NAPQI and ROS accumulation was predicted for a NAPQI concentration ranging between 0.025 and 0.25 μM in the cytosol. In parallel, we performed a dose response analysis in biochips that shows a reduction of the final hepatic cell number appeared in agreement with the time and doses associated with the switch of the NAPQI detoxification/accumulation. As a result, we were able to correlate in vitro extracellular APAP exposures with an intracellular in silico ROS accumulation using an integration of a coupled mathematical and experimental liver on chip approach.
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Igami K, Shimojo Y, Ito H, Miyazaki T, Kashiwada Y. Hepatoprotective effect of fermented ginseng and its major constituent compound K in a rat model of paracetamol (acetaminophen)-induced liver injury. J Pharm Pharmacol 2014; 67:565-72. [DOI: 10.1111/jphp.12342] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 08/19/2014] [Indexed: 12/26/2022]
Abstract
Abstract
Objectives
This work aimed at evaluating the effect of fermented ginseng (FG) and fermented red ginseng (FRG) against rat liver injury caused by paracetamol (acetaminophen (APAP)).
Methods
Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in the serum and histopathological changes in the liver were analysed to determine the degree of liver injury. Deoxyribonucleic acid (DNA) microarray analysis was performed to compare gene expression levels altered in the rat livers. Phosphorylated Jun-N-terminal kinase (JNK) in human hepatocellular carcinoma (HepG2) cells were detected using western blot analysis to investigate the anti-inflammatory activity of compound K.
Key findings
Pretreatment with FG, containing compound K at high concentration, attenuated AST as well as ALT levels in rats, while no obvious effect was observed in the group that received FRG, whose content of compound K was lower than that of FG. In addition, the results of our histopathological analysis were consistent with changes in the serum biochemical analysis. DNA microarray analysis indicated that JNK- and glutathione S-transferase (GST)-related genes were involved in the hepatotoxicity. Notably, compound K, a major ginsenoside in FG, inhibited the phosphorylation of JNK in HepG2 cells.
Conclusions
FG was shown to possess hepatoprotective activity against paracetamol (APAP)-induced liver injury better than FRG. Compound K might play an important role for an anti-inflammatory activity of FG by inhibiting JNK signalling in the liver.
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Affiliation(s)
- Kentaro Igami
- Research & Development Center, Nagase and CO., LTD, Kobe, Hyogo, Japan
| | - Yosuke Shimojo
- Research & Development Center, Nagase and CO., LTD, Kobe, Hyogo, Japan
| | - Hisatomi Ito
- Research & Development Center, Nagase and CO., LTD, Kobe, Hyogo, Japan
| | | | - Yoshiki Kashiwada
- Graduate School of Pharmaceutical Sciences, University of Tokushima, Shomachi, Tokushima, Japan
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Jennings P, Schwarz M, Landesmann B, Maggioni S, Goumenou M, Bower D, Leonard MO, Wiseman JS. SEURAT-1 liver gold reference compounds: a mechanism-based review. Arch Toxicol 2014; 88:2099-133. [DOI: 10.1007/s00204-014-1410-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/01/2014] [Indexed: 12/20/2022]
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