151
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Sugawara T, Saraprug D, Sakamoto K. Soy sauce increased the oxidative stress tolerance of nematode via p38 MAPK pathway. Biosci Biotechnol Biochem 2019; 83:709-716. [PMID: 30626262 DOI: 10.1080/09168451.2018.1562873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 12/07/2018] [Indexed: 01/05/2023]
Abstract
Soy sauce - a fermented food made from soybeans and wheat - is considered a healthy seasoning, but little scientific evidence is available to support this. In this study, physiological effects of soy sauce were analyzed using Caenorhabditis elegans. When soy sauce was fed to C. elegans together with Escherichia coli OP50, fat accumulation decreased, and resistance to oxidative stress by H2O2 was greatly increased in the nematodes. qRT-PCR revealed that mRNA expression of oxidative stress tolerance genes, including sod, ctl, and gpx, was markedly increased in soy sauce-fed nematodes. Worms ingesting soy sauce showed high mitochondrial membrane potential and reactive oxygen species (ROS) and low intracellular ROS, suggesting that soy sauce induced mitohormesis and decreased cytoplasmic ROS. Therefore, soy sauce ingestion affects the mitochondria and may alter the fat metabolism in C. elegans. Furthermore, the increase in oxidative stress tolerance is mediated through p38 MAPK pathway.
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Affiliation(s)
- Takaya Sugawara
- a Graduate School of Life and Environmental Sciences , University of Tsukuba , Tsukuba , Japan
| | - Danaporn Saraprug
- b The College of Biological Sciences , University of Tsukuba , Tsukuba , Japan
| | - Kazuichi Sakamoto
- a Graduate School of Life and Environmental Sciences , University of Tsukuba , Tsukuba , Japan
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152
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Ponnampalam EN, Vahedi V, Giri K, Lewandowski P, Jacobs JL, Dunshea FR. Muscle Antioxidant Enzymes Activity and Gene Expression Are Altered by Diet-Induced Increase in Muscle Essential Fatty Acid (α-linolenic acid) Concentration in Sheep Used as a Model. Nutrients 2019; 11:E723. [PMID: 30925775 PMCID: PMC6521022 DOI: 10.3390/nu11040723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 12/30/2022] Open
Abstract
This study investigated the effect of dietary manipulations on muscle fatty acid composition, the activities and relative mRNA expressions of antioxidant enzymes and the relationship between muscle enzyme activity or mRNA expression and alpha linolenic acid (ALA) concentration in sheep. Eighty-four lambs blocked on liveweight were randomly allocated to four dietary treatments, lucerne pasture (Lucerne), annual ryegrass pasture (Ryegrass), feedlot pellets (Feedlot) or annual ryegrass plus feedlot pellets (RyeFeedlot). After six weeks of feeding, lambs were slaughtered and within 30 min post-mortem, samples collected from the longissimus lumborum (LL) muscle for RNA isolation and measurement of antioxidant enzyme activities. At 24 h post-mortem, LL samples were collected for determination of fatty acid concentrations. Feedlot treatment decreased ALA, eicosapentaenoic (EPA), docosapentaenoic (DPA) and docosahexaenoic (DHA) concentrations compared with other treatments and increased linoleic acid (LA) and arachidonic acid (AA) compared with Lucerne and Ryegrass (p < 0.001). The activity of Glutathione peroxidase (GPX1, p < 0.001) and Superoxide dismutase (SOD2, p < 0.001) enzymes in the muscle increased with Lucerne compared to other treatments. Lucerne increased muscle gpx1 mRNA expression by 1.74-fold (p = 0.01) and 1.68-fold (p = 0.05) compared with Feedlot and other diets, respectively. The GPX1 (r² = 0.319, p = 0.002) and SOD2 (r² = 0.244, p = 0.009) enzyme activities were positively related to ALA. There was a positive linear relationship between muscle gpx1 (r² = 0.102, p = 0.017) or sod2 (r² = 0.049, p = 0.09) mRNA expressions and ALA concentration. This study demonstrates that diet can affect concentrations of ALA and other fatty acids as well as change activities and gene expression of antioxidant enzymes in muscle. Increased antioxidant activity may, in turn, have beneficial effects on the performance, health and wellbeing of animals and humans.
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Affiliation(s)
- Eric N Ponnampalam
- Animal Production Sciences, Agriculture Victoria Research, Department of Jobs, Precincts and Regions, Bundoora VIC 3083, Australia.
| | - Vahid Vahedi
- Department of Animal Science, Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil 56971-94781, Iran.
| | - Khageswor Giri
- Animal Production Sciences, Agriculture Victoria Research, Department of Jobs, Precincts and Regions, Bundoora VIC 3083, Australia.
| | | | - Joe L Jacobs
- Animal Production Sciences, Agriculture Victoria Research, Department of Jobs, Precincts and Regions, Ellinbank VIC 3821, Australia.
| | - Frank R Dunshea
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville VIC 3010, Australia.
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153
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Dong S, Yang Y, Cheng B, Ren C, Zhang H, Xu H, Zhu N, Wang W, Dang Y, Li M, Chen J, Wang K, Zhang L, Fang Y. Responses of antioxidant defenses in the clam Mactra veneriformis to 2,2',4,4'‑tetrabromodiphenyl ether exposure. Comp Biochem Physiol C Toxicol Pharmacol 2019; 217:98-105. [PMID: 30528702 DOI: 10.1016/j.cbpc.2018.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/02/2018] [Accepted: 12/02/2018] [Indexed: 12/22/2022]
Abstract
Antioxidant enzymes play essential roles against oxidative stress caused by 2,2',4,4'-tetrabromodiphenyl ether (BDE-47), which is ubiquitous in marine environment and organisms. However, research on antioxidant responses to BDE-47 in marine bivalves is scarce. In this study, we identified the full-length cDNA of catalase (CAT), and glutathione peroxidase (GPx) in the clam Mactra veneriformis. Subsequently, the responses of CAT, GPx, and copper, zinc-superoxide dismutase (Cu, Zn-SOD) were investigated in the clams exposed to 0.1, 1, and 10 μg/L BDE-47 for 7 days, and then depurated in natural seawater for 3 days. MvCAT and MvGPx contained conserved sequences. The deduced amino acid sequences shared high similarity with CATs and GPxs in other mollusks. M. veneriformis accumulated BDE-47 in a dose-dependent manner and eliminated BDE-47 poorly. BDE-47 induced a time- and dose-dependent increase of malondialdehyde content. Both the dose and the duration had significant effect on mRNA expressions and activities of the three antioxidants. Cu, Zn-SOD responded to BDE-47 earlier than CAT and GPx. The antioxidant responses could recover after depuration. These results suggested that M. veneriformis could accumulate BDE-47 efficiently. Antioxidant enzymes were triggered to counter the oxidative stress generated by BDE-47. Cu, Zn-SOD acted as the first defense against oxidative stress, while CAT and GPx intervened later. This study is therefore helpful in understanding the antioxidant responses to PBDEs in marine bivalves.
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Affiliation(s)
- Shihang Dong
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Yanyan Yang
- Shandong Marine Resource and Environment Research Institute, Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Yantai 264006, China
| | - Bo Cheng
- Aquatic Products Quality and Standards Research Center, Chinese Academy of Fishery Sciences, Beijing 100141, China
| | - Chuanbo Ren
- Shandong Marine Resource and Environment Research Institute, Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Yantai 264006, China
| | - Huawei Zhang
- Shandong Marine Resource and Environment Research Institute, Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Yantai 264006, China
| | - Hua Xu
- Yantai Environmental Monitoring Center Station, Yantai 264000, China
| | - Na Zhu
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Wansheng Wang
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Yongjian Dang
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Mingzhu Li
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Jun Chen
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Kai Wang
- School of Agriculture, Ludong University, Yantai 264025, China
| | - Libin Zhang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yan Fang
- School of Agriculture, Ludong University, Yantai 264025, China.
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154
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Wang J, Jiang C, Zhang K, Lan X, Chen X, Zang W, Wang Z, Guan F, Zhu C, Yang X, Lu H, Wang J. Melatonin receptor activation provides cerebral protection after traumatic brain injury by mitigating oxidative stress and inflammation via the Nrf2 signaling pathway. Free Radic Biol Med 2019; 131:345-355. [PMID: 30553970 DOI: 10.1016/j.freeradbiomed.2018.12.014] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/09/2018] [Accepted: 12/12/2018] [Indexed: 01/20/2023]
Abstract
Traumatic brain injury (TBI) is a principal cause of death and disability worldwide. Melatonin, a hormone made by the pineal gland, is known to have anti-inflammatory and antioxidant properties. In this study, using a weight-drop model of TBI, we investigated the protective effects of ramelteon, a melatonin MT1/MT2 receptor agonist, and its underlying mechanisms of action. Administration of ramelteon (10 mg/kg) daily at 10:00 a.m. alleviated TBI-induced early brain damage on day 3 and long-term neurobehavioral deficits on day 28 in C57BL/6 mice. Ramelteon also increased the protein levels of interleukin (IL)-10, IL-4, superoxide dismutase (SOD), glutathione, and glutathione peroxidase and reduced the protein levels of IL-1β, tumor necrosis factor, and malondialdehyde in brain tissue and serum on days 1, 3, and 7 post-TBI. Similarly, ramelteon attenuated microglial and astrocyte activation in the perilesional cortex on day 3. Furthermore, ramelteon decreased Keap 1 expression, promoted nuclear factor erythroid 2-related factor 2 (Nrf2) nuclear accumulation, and increased levels of downstream proteins, including SOD-1, heme oxygenase-1, and NQO1 on day 3 post-TBI. However, in Nrf2 knockout mice with TBI, ramelteon did not decrease the lesion volume, neuronal degeneration, or myelin loss on day 3; nor did it mitigate depression-like behavior or most motor behavior deficits on day 28. Thus, timed ramelteon treatment appears to prevent inflammation and oxidative stress via the Nrf2-antioxidant response element pathway and might represent a potential chronotherapeutic strategy for treating TBI.
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Antioxidants/pharmacology
- Astrocytes/drug effects
- Astrocytes/metabolism
- Astrocytes/pathology
- Brain Edema/drug therapy
- Brain Edema/genetics
- Brain Edema/metabolism
- Brain Edema/pathology
- Brain Injuries, Traumatic/drug therapy
- Brain Injuries, Traumatic/genetics
- Brain Injuries, Traumatic/metabolism
- Brain Injuries, Traumatic/pathology
- Cerebral Cortex/drug effects
- Cerebral Cortex/metabolism
- Cerebral Cortex/pathology
- Disease Models, Animal
- Gene Expression Regulation
- Glutathione Peroxidase/genetics
- Glutathione Peroxidase/metabolism
- Indenes/pharmacology
- Inflammation
- Interleukin-10/genetics
- Interleukin-10/metabolism
- Interleukin-1beta/genetics
- Interleukin-1beta/metabolism
- Interleukin-4/genetics
- Interleukin-4/metabolism
- Kelch-Like ECH-Associated Protein 1/genetics
- Kelch-Like ECH-Associated Protein 1/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Microglia/drug effects
- Microglia/metabolism
- Microglia/pathology
- NF-E2-Related Factor 2/genetics
- NF-E2-Related Factor 2/metabolism
- Oxidative Stress/drug effects
- Receptor, Melatonin, MT1/agonists
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT1/metabolism
- Receptor, Melatonin, MT2/agonists
- Receptor, Melatonin, MT2/genetics
- Receptor, Melatonin, MT2/metabolism
- Signal Transduction
- Superoxide Dismutase/genetics
- Superoxide Dismutase/metabolism
- Tumor Necrosis Factor-alpha/genetics
- Tumor Necrosis Factor-alpha/metabolism
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Affiliation(s)
- Junmin Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China; The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China; Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Chao Jiang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Kun Zhang
- School of Life Science, Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Xi Lan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Xuemei Chen
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Weidong Zang
- Department of Anatomy, College of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Zhongyu Wang
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Fangxia Guan
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China; The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China; School of Life Science, Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Changlian Zhu
- The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China; Henan Key Laboratory of Child Brain Injury, Institute of Neuroscience, Zhengzhou University, Zhengzhou, Henan 450052, China; Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, University of Gothenburg, Göteborg 40530, Sweden
| | - Xiuli Yang
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Hong Lu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China.
| | - Jian Wang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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155
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Yang SH, Li P, Yu LH, Li L, Long M, Liu MD, He JB. Sulforaphane Protect Against Cadmium-Induced Oxidative Damage in mouse Leydigs Cells by Activating Nrf2/ARE Signaling Pathway. Int J Mol Sci 2019; 20:ijms20030630. [PMID: 30717178 PMCID: PMC6387384 DOI: 10.3390/ijms20030630] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/26/2019] [Accepted: 01/31/2019] [Indexed: 12/20/2022] Open
Abstract
Cadmium (Cd) is harmful for humans and animals, especially for the reproductive system. However, the mechanism of its toxicity has not been elucidated, and how to alleviate its toxicity is very important. This study aimed to explore the role and mechanism of action of sulforaphane (SFN) in protecting mouse Leydigs (TM3) cells from cadmium (Cd)-induced damage. The half-maximal inhibitory concentration (IC50) of Cd and the safe doses of SFN were determined using a methyl thiazolyl tetrazolium (MTT) assay. The testosterone secretion from TM3 cells was measured using the enzyme-linked immunosorbent assay. The intracellular oxidative stress was evaluated using corresponding kits. The cell apoptosis was detected using flow cytometry. The mRNA expression of genes associated with NF-E2-related factor 2 (Nrf2)/antioxidant response element (ARE) signaling was detected using reverse transcription–polymerase chain reaction, including Nrf2, heme oxygenase I (HO-1), glutathione peroxidase (GSH-Px), NAD(P)H:quinone acceptor oxidoreductase 1 (NQO1), and γ-glutamylcysteine synthetase (γ-GCS). The protein expression of Nrf2, GSH-Px, HO-1, γ-GCS, and NQO1 was detected using Western blot analysis. The results showed that the IC50 of Cd to TM3 cells was 51.4 µmol/L. SFN reduced the release of lactate dehydrogenase from Cd-exposed cells. Cd + SFN 2.5 treatment significantly elevated testosterone concentration compared with the Cd group (p < 0.05). SFN significantly increased total superoxide dismutase (T-SOD) and GSH-Px activity and GSH content in Cd-treated cells (p < 0.05; p < 0.01), inhibited the production of malondialdehyde or reactive oxygen species caused by Cd (p < 0.05; p < 0.01), and reduced the apoptotic rate of Cd-induced TM3 cells (p < 0.01). SFN upregulated the mRNA expression of Nrf2, GSH-Px, HO-1, NQO1, and γ-GCS in Cd-treated cells, indicating the protective effect of SFN against Cd-induced oxidative stress or cell apoptosis by activating the Nrf2/ARE signaling pathway.
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Affiliation(s)
- Shu-Hua Yang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
- College of Land and Environmental Sciences, Shenyang Agricultural University, Shenyang 110866, China.
| | - Peng Li
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Li-Hui Yu
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Lin Li
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Miao Long
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Ming-Da Liu
- College of Land and Environmental Sciences, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jian-Bin He
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
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156
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Mai HN, Nguyen LTT, Shin EJ, Kim DJ, Jeong JH, Chung YH, Lei XG, Sharma N, Jang CG, Nabeshima T, Kim HC. Astrocytic mobilization of glutathione peroxidase-1 contributes to the protective potential against cocaine kindling behaviors in mice via activation of JAK2/STAT3 signaling. Free Radic Biol Med 2019; 131:408-431. [PMID: 30592974 DOI: 10.1016/j.freeradbiomed.2018.12.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 12/13/2018] [Accepted: 12/21/2018] [Indexed: 02/07/2023]
Abstract
Compelling evidence indicates that oxidative stress contributes to cocaine neurotoxicity. The present study was performed to elucidate the role of the glutathione peroxidase-1 (GPx-1) in cocaine-induced kindling (convulsive) behaviors in mice. Cocaine-induced convulsive behaviors significantly increased GPx-1, p-IkB, and p-JAK2/STAT3 expression, and oxidative burdens in the hippocampus of mice. There was no significant difference in cocaine-induced p-IkB expression between non-transgenic (non-TG) and GPx-1 overexpressing transgenic (GPx-1 TG) mice, but significant differences were observed in cocaine-induced p-JAK2/STAT3 expression and oxidative stress between non-TG and GPx-1 TG mice. Cocaine-induced glial fibrillary acidic protein (GFAP)-labeled astrocytic level was significantly higher in the hippocampus of GPx-1 TG mice. Triple-labeling immunocytochemistry indicated that GPx-1-, p-STAT3-, and GFAP-immunoreactivities were co-localized in the same cells. AG490, a JAK2/STAT3 inhibitor, but not pyrrolidone dithiocarbamate, an NFκB inhibitor, significantly counteracted GPx-1-mediated protective potentials (i.e., anticonvulsant-, antioxidant-, antiapoptotic-effects). Genetic overexpression of GPx-1 significantly attenuated proliferation of Iba-1-labeled microglia induced by cocaine in mice. However, AG490 or astrocytic inhibition (by GFAP antisense oligonucleotide and α-aminoadipate) significantly increased Iba-1-labeled microglial activity and M1 phenotype microglial mRNA levels, reflecting that proinflammatory potentials were mediated by AG490 or astrocytic inhibition. This microglial activation was less pronounced in GPx-1 TG than in non-TG mice. Furthermore, either AG490 or astrocytic inhibition significantly counteracted GPx-1-mediated protective potentials. Therefore, our results suggest that astrocytic modulation between GPx-1 and JAK2/STAT3 might be one of the underlying mechanisms for protecting against convulsive neurotoxicity induced by cocaine.
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Affiliation(s)
- Huynh Nhu Mai
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Lan Thuy Ty Nguyen
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Eun-Joo Shin
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 24341, Republic of Korea.
| | - Dae-Joong Kim
- Department of Anatomy and Cell Biology, Medical School, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Yoon Hee Chung
- Department of Anatomy, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Xin Gen Lei
- Department of Animal Science, Cornell University, Ithaca, New York 14853, USA
| | - Naveen Sharma
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 24341, Republic of Korea
| | - Choon-Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Toshitaka Nabeshima
- Advanced Diagnostic System Research Laboratory, Fujita Health University Graduate School of Health Science, Aichi 470-1192, Japan; Aino University, Ibaraki 576-0012, Japan; Japanese Drug Organization of Appropriate and Research, Nagoya 468-0069, Japan
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon 24341, Republic of Korea.
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157
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Liljedahl L, Pedersen MH, McGuire JN, James P. The impact of the glucagon-like peptide 1 receptor agonist liraglutide on the streptozotocin-induced diabetic mouse kidney proteome. Physiol Rep 2019; 7:e13994. [PMID: 30806030 PMCID: PMC6389751 DOI: 10.14814/phy2.13994] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 01/02/2019] [Indexed: 11/24/2022] Open
Abstract
In diabetes mellitus (DM), the kidneys are exposed to increased levels of hyperglycemia-induced oxidative stress. Elevated amounts of reactive oxygen species (ROS) are believed to provoke ultrastructural changes in kidney tissue and can eventually result in DM late complications such as diabetic nephropathy. While it is reported that glucagon-like peptide 1 receptors (GLP-1R) are present in the kidney vasculature, the effects of GLP-1 on the kidney proteome in DM is not well described. Thus, we set out to investigate potential effects on the proteomic level. Here the effects of GLP-1R agonism using the GLP-1 analogue liraglutide are studied in the kidneys of streptozotocin (STZ)-treated mice (n = 6/group) by label-free shotgun mass spectrometry (MS) and targeted MS. Unsupervised and supervised multivariate analyses are followed by one-way ANOVA. Shotgun MS data of vehicle and liraglutide-treated mouse groups are separated in the supervised multivariate analysis and separation is also achieved in the subsequent unsupervised multivariate analysis using targeted MS data. The mouse group receiving the GLP-1R agonist liraglutide has increased protein abundances of glutathione peroxidase-3 (GPX3) and catalase (CATA) while the abundances of neuroplastin (NPTN) and bifunctional glutamate/proline-tRNA ligase (SYEP) are decreased compared to the STZ vehicle mice. The data suggest that GLP-1R agonism mainly influences abundances of structurally involved proteins and proteins involved in oxidative stress responses in the STZ mouse kidney. The changes could be direct effects of GLP-1R agonism in the kidneys or indirectly caused by a systemic response to GLP-1R activation.
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Affiliation(s)
| | | | | | - Peter James
- Department of ImmunotechnologyLund UniversityLundSweden
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158
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Ni H, Peng L, Gao X, Ji H, Ma J, Li Y, Jiang S. Effects of maduramicin on adult zebrafish (Danio rerio): Acute toxicity, tissue damage and oxidative stress. Ecotoxicol Environ Saf 2019; 168:249-259. [PMID: 30388543 DOI: 10.1016/j.ecoenv.2018.10.040] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Maduramicin, a potent polyether ionophore antibiotic, has been widely used to control coccidiosis in the poultry production. Nevertheless, incomplete metabolism of maduramicin in chicken may result in its accumulation in the aquatic environment, while maduramicin's threat to fish remains largely unknown. In the present study, we focused on acute toxicity, histopathological lesion and oxidative stress damage of maduramicin in adult zebrafish. Primarily, we obtained that the 96-h median lethal concentration (96 h LC50) of adult zebrafish exposure to maduramicin was 13.568 mg/L. On basis of that, adult zebrafish were separately exposed to 0.1 mg/L (1/125 LC50), 0.5 mg/L (1/25 LC50) and 2.5 mg/L (1/5 LC50) maduramicin for 14 days. On day 3, 0.1 mg/L maduramicin significantly increased the activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX) and glutathione s-transferase (GST) in the liver of zebrafish, while the activities of these antioxidant enzymes in the liver were significantly inhibited by 2.5 mg/L maduramicin. Moreover, the contents of malondialdehyde (MDA) in the liver of different dose groups were all significantly promoted after 14 days of exposure. For the gill of zebrafish, the increase in MDA contents was found after only 3 days of exposure to maduramicin. Furthermore, maduramicin treatment significantly up-regulated the mRNA levels of genes (sod1, gpx1a, gstr, nrf2 and keap1) in the liver of zebrafish after 3 days of exposure. On days 6, 9 and 14, maduramicin treatment significantly down-regulated the mRNA levels of these genes in the liver of zebrafish. Meanwhile, maduramicin significantly down-regulated the mRNA levels of genes (sod1, cat, gpx1a, gstr, nrf2 and keap1) in the gill of zebrafish during the 14-day of exposure. In addition, a dose-dependent induction in histopathological lesion was observed in multiple organs after 14 days of exposure, including lamellar fusion, epithelial lifting in the gill and vacuole formation in the liver as well as the fracture of intestinal villus in the intestine. Taken together, our findings demonstrated that waterborne maduramicin (2.5 mg/L) exposure can induce severe oxidative stress and tissue damage in adult zebrafish while this damage was not enough to kill them after 14 days of waterborne exposure.
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Affiliation(s)
- Han Ni
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Lin Peng
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Xiuge Gao
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Hui Ji
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Junxiao Ma
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Yanping Li
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China
| | - Shanxiang Jiang
- Laboratory of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, People's Republic of China.
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159
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Abstract
This research demonstrates fluctuation of glutathione peroxidase1 (Gpx1) throughout cell cycle progression with significant decreased expression at mitosis of HeLa cell. This was achieved with western blot (WB) analysis of target proteins from each phase of synchronized cells. The synchronizations were performed with double thymidine (T/T) for G1/S arrest and thymidine followed by nocodazole (T/N) for G2/M arrest. The G1/S arrested cells were released in fresh medium for 3, 6, 9, 10, and 15h to obtain cell at each phase such as gap1 (G1), synthesis (S), gap2 (G2), mitosis (M), and gap1 (G1) phase, respectively, for investigating Gpx1 expression throughout a complete cycle. The synchronizations were confirmed using fluorescence activated cell sorting (FACS) and WB analysis of phase-specific markers. The fluctuations of Gpx1 expression were verified with universal protein actin and peroxiredoxin1 (Prx1) which are stable throughout the cell cycle. Intriguingly, immunoblots showed the level of Gpx1 decreases at mitosis phase and increased during mitotic exit to G1 phase in HeLa cells, while Prx1 protein level remained constant. The fractionation experiments reveal that only the cytosolic Gpx1 was decreased while their levels at mitochondria remain constant. The highest levels of mitochondrial ROS were measured in mitosis phase with FACS analysis using Mito sox indicating that antioxidant activity of Gpx1 for detoxifying excessive induced endogenous reactive oxygen species (ROS) in the mitosis phase could be the reason for such decreasing level. For unfolding the molecular mechanism of such decreased expression, the Gpx1 was investigated at transcriptional, translational, and proteosomal level. The results revealed that translational mechanism is involve in the decreased expression rather than transcriptional or proteosomal degradation at mitosis phase. This finding supports that Gpx1 is involved in the cell cycle progression through regulation of endogenous ROS. Based on this observation, further research could uncover their possible association with the infinitive division of a cancer cell.
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Affiliation(s)
- Khudishta Aktar
- BEST group, School of Engineering, University of Glasgow, Glasgow, UK
- Department of Life Science, Ewha Womans University, Seoul, South Korea
| | - Abdul Kafi
- BEST group, School of Engineering, University of Glasgow, Glasgow, UK
| | - Ravinder Dahiya
- BEST group, School of Engineering, University of Glasgow, Glasgow, UK.
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Khole S, Mittal S, Jagadish N, Ghosh D, Gadgil V, Sinkar V, Ghaskadbi S. Andrographolide enhances redox status of liver cells by regulating microRNA expression. Free Radic Biol Med 2019; 130:397-407. [PMID: 30414976 DOI: 10.1016/j.freeradbiomed.2018.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/03/2018] [Accepted: 11/04/2018] [Indexed: 12/21/2022]
Abstract
Andrographis paniculata Nees and its principal compound andrographolide are well known for exerting beneficial effects by modulating signaling pathways in different biological systems. Our earlier studies have demonstrated the ability of andrographolide as well as andrographolide enriched extracts to activate Nrf2/HO-1 pathway through adenosine A2a receptor. Present study investigated ability of andrographolide to regulate Nrf2 induced antioxidant defense systems by miRNAs using HepG2 cells. Andrographolide strongly induced Nrf2 which in turn modulated enzymes of glutathione and thioredoxin antioxidant systems. It also regulated crucial transcription factors viz. hepatocyte nuclear factor alpha (HNF4A) and tumor suppressor protein 53 (p53). Downregulation of HNF4A by andrographolide led to decrease in miRNAs regulating Heme oxygenase-1 (miR-377) and glutathione cysteine ligase (miR-433). Upregulation of p53 on the other hand led to increase in miRNAs regulating thioredoxin interacting protein (miR-17, miR-224) and glutathione peroxidase (miR-181a). Involvement of p53 and HNF4A in modulation of these miRNAs was confirmed by chromatin immunoprecipitation assay. Overall, the work reveals that andrographolide through modulation of p53 and HNF4A, regulates miRNAs leading to upregulation of HO-1, glutathione and thioredoxin systems. Andrographolide thus, can play a beneficial role in modulating antioxidant defense in oxidative stress induced diseases such as diabetes, ageing etc.
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Affiliation(s)
- Swati Khole
- Department of Zoology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, Maharashtra, India
| | - Smriti Mittal
- Department of Zoology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, Maharashtra, India; Department of Biotechnology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, Maharashatra, India
| | - Nidhi Jagadish
- Strategic Science Group, Naturals and Traditional Medicine, Unilever R&D Bangalore, 64, Main Road, Whitefield, Bangalore 560066, Karnataka, India
| | - Debjani Ghosh
- Strategic Science Group, Naturals and Traditional Medicine, Unilever R&D Bangalore, 64, Main Road, Whitefield, Bangalore 560066, Karnataka, India
| | - Vijay Gadgil
- Strategic Science Group, Naturals and Traditional Medicine, Unilever R&D Bangalore, 64, Main Road, Whitefield, Bangalore 560066, Karnataka, India
| | - Vilas Sinkar
- Strategic Science Group, Naturals and Traditional Medicine, Unilever R&D Bangalore, 64, Main Road, Whitefield, Bangalore 560066, Karnataka, India
| | - Saroj Ghaskadbi
- Department of Zoology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, Maharashtra, India.
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161
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Cho HY, Miller-DeGraff L, Blankenship-Paris T, Wang X, Bell DA, Lih F, Deterding L, Panduri V, Morgan DL, Yamamoto M, Reddy AJ, Talalay P, Kleeberger SR. Sulforaphane enriched transcriptome of lung mitochondrial energy metabolism and provided pulmonary injury protection via Nrf2 in mice. Toxicol Appl Pharmacol 2018; 364:29-44. [PMID: 30529165 DOI: 10.1016/j.taap.2018.12.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/02/2018] [Accepted: 12/05/2018] [Indexed: 12/14/2022]
Abstract
Nrf2 is essential to antioxidant response element (ARE)-mediated host defense. Sulforaphane (SFN) is a phytochemical antioxidant known to affect multiple cellular targets including Nrf2-ARE pathway in chemoprevention. However, the role of SFN in non-malignant airway disorders remain unclear. To test if pre-activation of Nrf2-ARE signaling protects lungs from oxidant-induced acute injury, wild-type (Nrf2+/+) and Nrf2-deficient (Nrf2-/-) mice were given SFN orally or as standardized broccoli sprout extract diet (SBE) before hyperoxia or air exposure. Hyperoxia-induced pulmonary injury and oxidation indices were significantly reduced by SFN or SBE in Nrf2+/+ mice but not in Nrf2-/- mice. SFN upregulated a large cluster of basal lung genes that are involved in mitochondrial oxidative phosphorylation, energy metabolism, and cardiovascular protection only in Nrf2+/+ mice. Bioinformatic analysis elucidated ARE-like motifs on these genes. Transcript abundance of the mitochondrial machinery genes remained significantly higher after hyperoxia exposure in SFN-treated Nrf2+/+ mice than in SFN-treated Nrf2-/- mice. Nuclear factor-κB was suggested to be a central molecule in transcriptome networks affected by SFN. Minor improvement of hyperoxia-caused lung histopathology and neutrophilia by SFN in Nrf2-/- mice implies Nrf2-independent or alternate effector mechanisms. In conclusion, SFN is suggested to be as a preventive intervention in a preclinical model of acute lung injury by linking mitochondria and Nrf2. Administration of SFN alleviated acute lung injury-like pathogenesis in a Nrf2-dependent manner. Potential AREs in the SFN-inducible transcriptome for mitochondria bioenergetics provided a new insight into the downstream mechanisms of Nrf2-mediated pulmonary protection.
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Affiliation(s)
- Hye-Youn Cho
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.
| | - Laura Miller-DeGraff
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Terry Blankenship-Paris
- Comparative Medicine Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Xuting Wang
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Douglas A Bell
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Fred Lih
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Leesa Deterding
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Vijayalakshmi Panduri
- Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Daniel L Morgan
- National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | | | - Anita J Reddy
- Respiratory Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Paul Talalay
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, MD 21205, USA
| | - Steven R Kleeberger
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
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162
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Shin D, Kim EH, Lee J, Roh JL. Nrf2 inhibition reverses resistance to GPX4 inhibitor-induced ferroptosis in head and neck cancer. Free Radic Biol Med 2018; 129:454-462. [PMID: 30339884 DOI: 10.1016/j.freeradbiomed.2018.10.426] [Citation(s) in RCA: 303] [Impact Index Per Article: 50.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 09/15/2018] [Accepted: 10/13/2018] [Indexed: 01/01/2023]
Abstract
Glutathione peroxidase 4 (GPX4) is a regulator of ferroptosis (iron-dependent, non-apoptotic cell death); its inhibition can render therapy-resistant cancer cells susceptible to ferroptosis. However, some cancer cells develop mechanisms protective against ferroptosis; understanding these mechanisms could help overcome chemoresistance. In this study, we investigated the molecular mechanisms underlying resistance to ferroptosis induced by GPX4 inhibition in head and neck cancer (HNC). The effects of two GPX4 inhibitors, (1S, 3R)-RSL3 and ML-162, and of trigonelline were tested in HNC cell lines, including cisplatin-resistant (HN3R) and acquired RSL3-resistant (HN3-rslR) cells. The effects of the inhibitors and trigonelline, as well as of inhibition of the p62, Keap1, or Nrf2 genes, were assessed by cell viability, cell death, lipid ROS production, and protein expression, and in mouse tumor xenograft models. Treatment with RSL3 or ML-162 induced the ferroptosis of HNC cells to varying degrees. RSL3 or ML-162 treatment increased the expression of p62 and Nrf2 in chemoresistant HN3R and HN3-rslR cells, inactivated Keap1, and increased expression of the phospho-PERK-ATF4-SESN2 pathway. Transcriptional activation of Nrf2 was associated with resistance to ferroptosis. Overexpression of Nrf2 by inhibiting Keap1 or Nrf2 gene transfection rendered chemosensitive HN3 cells resistant to RSL3. However, Nrf2 inhibition or p62 silencing sensitized HN3R cells to RSL3. Trigonelline sensitized chemoresistant HNC cells to RSL3 treatment in a mouse model transplanted with HN3R. Thus, activation of the Nrf2-ARE pathway contributed to the resistance of HNC cells to GPX4 inhibition, and inhibition of this pathway reversed the resistance to ferroptosis in HNC.
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Affiliation(s)
- Daiha Shin
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Eun Hye Kim
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jaewang Lee
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jong-Lyel Roh
- Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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163
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Han L, Yang X, Sun W, Li Z, Ren H, Li B, Zhang R, Zhang D, Shi Z, Liu J, Cao J, Zhang J, Xiong Y. The study of GPX3 methylation in patients with Kashin-Beck Disease and its mechanism in chondrocyte apoptosis. Bone 2018; 117:15-22. [PMID: 30153510 DOI: 10.1016/j.bone.2018.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/06/2018] [Accepted: 08/23/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE Selenium deficiency is a risk factor for Kashin-Beck Disease (KBD), an endemic osteoarthropathy. Although promoter hypermethylation of glutathione peroxidase 3 (GPX3) (a selenoprotein) has been identified in several cancers, little is known about promoter methylation and expression of GPX3 and their relation to selenium in KBD. The present study was thus conducted to investigate this research question. METHODS Methylation and expressions of GPX3 in whole blood drawn from 288 KBD patients and 362 healthy controls and in chondrocyte cell line were evaluated using methylation-specific PCR and qRT-PCR, respectively. The protein levels of PI3K/Akt/c-fos signaling in the whole blood and chondrocyte cell line were determined with Western blotting. Chondrocytes apoptosis were detected by Hoechst 33342 and Annexin V-FITC/PI staining. RESULTS GPX3 methylation was increased, GPX3 mRNA was decreased, and protein levels in the PI3K/Akt/c-fos signaling pathway were up-regulated in the whole blood collected from KBD patients as compared with healthy controls. Similar results were obtained for chondrocytes injured by oxidative stress. There was a significant, decreasing trend in GPX3 expression across groups of unmethylation, partial methylation, and complete methylation for GPX3, in sequence. Compared with unmethylation group, protein levels in PI3K/Akt/c-fos pathway were enhanced in partial and complete methylation groups. Treatment of chondrocytes with sodium selenite resulted in reduced methylation and increased expression of GPX3 as well as down-regulated level of PI3K/Akt/c-fos proteins. CONCLUSIONS The methylation and expression of GPX3 and expression of PI3K/Akt/c-fos pathway are altered in KBD and these changes are reversible by selenium supplementation.
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Affiliation(s)
- LiXin Han
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - XiaoLi Yang
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - WenYan Sun
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - ZhaoFang Li
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - Hao Ren
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - BaoRong Li
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - RongQiang Zhang
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - DanDan Zhang
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - ZiYun Shi
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - JiFeng Liu
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - JunLing Cao
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China
| | - JianJun Zhang
- Department of Epidemiology, Indiana University Richard M. Fairbanks School of Public Health, Indianapolis, 1050 Wishard Boulevard, IN 46202, USA
| | - YongMin Xiong
- Institute of Endemic Diseases and Key Laboratory of Trace Elements and Endemic Diseases, National Health Commission of the People's Republic of China, School of Public Health, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, Shaanxi 710061, P.R. China.
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164
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Kaushal JB, Popli P, Sankhwar P, Shukla V, Dwivedi A. Sonic hedgehog protects endometrial hyperplasial cells against oxidative stress via suppressing mitochondrial fission protein dynamin-like GTPase (Drp1). Free Radic Biol Med 2018; 129:582-599. [PMID: 30347228 DOI: 10.1016/j.freeradbiomed.2018.10.427] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 10/12/2018] [Accepted: 10/14/2018] [Indexed: 02/07/2023]
Abstract
Hh/Gli1 cascade as well as Gsk3β-Gli1 crosstalk play crucial role in estrogen-dependent progression of endometrial hyperplasia (EH). However, the underlying mechanisms involved in progression of disease still remain unclear. In the present study, we explored the role of Hh signaling in protection of endometrial hyperplasial cells against oxidative stress and the underlying mechanism involved therein. EH cells were found to be more resistant towards H2O2-induced oxidative stress (IC50: ~ 3×) as compared with normal endometrial cells. Estrogen (E2) pre-treatment followed by cytotoxic dose of H2O2, almost rescued the EH cells from apoptosis and caused the increased expression of downstream Shh signaling molecules i.e., Smo, Ptch and Gli1. Whereas pretreatment with cyclopamine was not able to curtail H2O2-induced effects indicating that estrogen protects these cells via activation of Shh pathway. Further, H2O2-induced ROS and lipid peroxidation alongwith decreased activities of antioxidant enzymes glutathione peroxidase and superoxide dismutase were found to be reversed in EH cells pre-exposed to E2 or rShh. The rShh suppressed H2O2-induced cell death and caused attenuation of mitochondrial apoptotic mediators and prevented disruption in mitochondrial morphology and mitochondrial membrane potential in EH cells. The functional blockage of signaling by Shh siRNA or Gli1siRNA led to significantly increased expression of mitochondrial fission protein dynamin-like GTPase (Drp1). The H2O2-treated EH cells showed diminished Gli1 and increased Drp1 expression, concurrent with reduced p-Drp1-(serine637). Whereas rShh pre-treated EH cells presented normal mitochondrial dynamics with dense, long networks of mitochondria alongwith nuclear accumulation of Gli1 and the decreased expression of Drp1. Overall, our results implicated that Shh signaling modulates antioxidant defense system and stabilizes mitochondrial dynamics by suppressing Drp1 protein which maintains survival of EH cells against oxidative stress.
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Affiliation(s)
- Jyoti B Kaushal
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India
| | - Pooja Popli
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India
| | - Pushplata Sankhwar
- Department of Obstetrics & Gynaecology, King George's Medical University, Lucknow 226003, U.P., India
| | - Vinay Shukla
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India
| | - Anila Dwivedi
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India.
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165
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Shi Q, Sun N, Kou H, Wang H, Zhao H. Chronic effects of mercury on Bufo gargarizans larvae: Thyroid disruption, liver damage, oxidative stress and lipid metabolism disorder. Ecotoxicol Environ Saf 2018; 164:500-509. [PMID: 30145490 DOI: 10.1016/j.ecoenv.2018.08.058] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/08/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
Mercury is severely detrimental to organisms and is ubiquitous in both terrestrial and aquatic ecosystems. In the present study, we examined the effects of chronic mercury (Hg) exposure on metamorphosis, body size, thyroid microstructures, liver microstructural and ultrastructural features, and transcript levels of genes associated with lipid metabolism, oxidative stress and thyroid hormones signaling pathways of Chinese toad (Bufo gargarizans) tadpoles. Tadpoles were exposed to mercury concentrations at 0, 6, 12, 18, 24 and 30 µg/L from Gosner stage 26-42 of metamorphic climax. The present results showed that high dose mercury (24 and 30 µg/L) decelerated metamorphosis rate and inhibited body size of B. gargarizans larvae. Histological examinations have clearly exhibited that high mercury concentrations caused thyroid gland and liver damages. Moreover, degeneration and disintegration of hepatocytes, mitochondrial vacuolation, and endoplasmic reticulum breakdown were visible in the ultrastructure of liver after high dose mercury treatment. Furthermore, the larvae exposed to high dose mercury demonstrated a significant decrease in type II iodothyronine deiodinase (Dio2) and thyroid hormone receptor α and β (TRα and TRβ) mRNA levels. Transcript level of superoxide dismutase (SOD) and heat shock protein (HSP) were significantly up regulated in larvae exposed to high dose mercury, while transcript level of phospholipid hydroperoxide glutathione peroxidase (PHGPx) was significantly down regulated. Moreover, exposure to high dose mercury significantly down regulated mRNA expression of carnitine palmitoyltransferase (CPT), sterol carrier protein (SCP), acyl-CoA oxidase (ACOX) and peroxisome proliferator-activated receptor α (PPAPα), but significantly up regulated mRNA expression of fatty acid elongase (FAE), fatty acid synthetase (FAS) and Acetyl CoA Carboxylase (ACC). Therefore, we conclude that high dose mercury induced thyroid function disruption, liver oxidative stress and lipid metabolism disorder by damaging thyroid and liver cell structures and altering the expression levels of relevant genes.
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Affiliation(s)
- Qiang Shi
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119 China
| | - Nailiang Sun
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119 China
| | - Honghong Kou
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119 China
| | - Hongyuan Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119 China
| | - Hongfeng Zhao
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119 China.
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166
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Bao D, Wang J, Liu J, Qin T, Liu H. The attenuation of HIV-1 Tat-induced neurotoxicity by Salvianic acid A and Danshen granule. Int J Biol Macromol 2018; 124:863-870. [PMID: 30503790 DOI: 10.1016/j.ijbiomac.2018.11.146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 10/08/2018] [Accepted: 11/14/2018] [Indexed: 11/18/2022]
Abstract
The neurotoxicity of HIV-1 Tat protein contributes significantly to the pathogenesis of HAND, and hence the attractive therapeutic strategies focusing on Tat-induced neurotoxicity are warranted. Salvia miltiorrhiza have been known to antioxidant property and neuroprotective effects. The Danshen granule is the pharmaceutical dosage forms of Salvia miltiorrhiza and Salvianic acid A is an essential chemical constituent of Salvia miltiorrhiza. However, the protective effects of Salvianic acid A and Danshen granule on Tat-induced neurotoxicity remain unknown. Here, we found that Salvianic acid A and Danshen granule remarkable inhibited Tat-induced cell death, blocked LDH release and rescued dendritic spine loss. Furthermore, Salvianic acid A and Danshen granule significantly ameliorates Tat-induced intracellular ROS and MDA production, attenuates cell apoptosis. In addition, Salvianic acid A and Danshen granule pretreatment obviously increases antioxidant enzymatic activity of CAT, SOD and GSH-Px and inhibits apoptotic pathways. In conclusion, this study demonstrated that Salvianic acid A and Danshen granule provides substantial neuroprotection against Tat-induced neurotoxicity, which may be new therapeutic agent in Tat induced HAND or neurodegenerative diseases.
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Affiliation(s)
- Dengke Bao
- Henan Provincial People's Hospital, Henan University, Zhengzhou, Henan 450002, China; Laboratory of Cancer Biomarkers and Liquid Biopsy, Pharmaceutical College of Henan University, Kaifeng, Henan 475004, China
| | - Jingkai Wang
- Department of Nursing, Nanyang Medical College, Nan Yang, Henan 473000, China
| | - Junqi Liu
- Department of Radiation Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 453000, China
| | - Tao Qin
- Henan Provincial People's Hospital, Henan University, Zhengzhou, Henan 450002, China.
| | - Hongliang Liu
- Laboratory of Cancer Biomarkers and Liquid Biopsy, Pharmaceutical College of Henan University, Kaifeng, Henan 475004, China.
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167
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Li L, Wang Y, Qin X, Zhang J, Zhang Z. Echinacoside protects retinal ganglion cells from ischemia/reperfusion-induced injury in the rat retina. Mol Vis 2018; 24:746-758. [PMID: 30581281 PMCID: PMC6279312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 11/23/2018] [Indexed: 11/09/2022] Open
Abstract
Objective To investigate whether echinacoside (ECH) protects the retina against ischemia/reperfusion (I/R) injury and the underlying mechanisms. Methods Adult male Wistar rats were randomly divided into four groups: sham, sham plus ECH, I/R plus vehicle, and I/R plus ECH. Before the retinal I/R injury produced by high intraocular pressure (HOP), ECH was administered (20 mg/kg daily) for 7 days. The level of retinal cell damage was evaluated using Fluoro-Gold (FG) retrograde labeling and terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) analysis 7 days after I/R. Optic nerve histology was analyzed with transmission electron microscopy. Levels of retinal malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) were determined. The expression of apoptosis-associated factors (Apaf-1, Parp, and Bad) were analyzed with western blotting and quantitative real-time PCR (qPCR). The production of proinflammatory cytokines (tumor necrosis factor-α [TNFα], interleukin-1 beta [IL-1β], and IL-6) was analyzed with enzyme-linked immunosorbent assay (ELISA) 7 days after the I/R injury as well. Results The administration of ECH not only preserved retinal morphology but also attenuated retinal inflammation and apoptosis at 7 days after the I/R injury and decreased I/R-induced oxidative stress in the retina statistically significantly. Conclusions ECH protected against I/R-induced retinal injury, via activation of antioxidant enzymes and suppression of inflammation. Therefore, ECH could be a potential therapeutic candidate for the treatment and management of I/R retinal diseases.
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Affiliation(s)
- Lin Li
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - YeFei Wang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - XiuHong Qin
- Department of Ophthalmology, First Affiliated Hospital of Dalian Medical University, DaLian, Liaoning Province, China
| | - Jing Zhang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - ZhenZhen Zhang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Lin J, Xia J, Zhao HS, Hou R, Talukder M, Yu L, Guo JY, Li JL. Lycopene Triggers Nrf2-AMPK Cross Talk to Alleviate Atrazine-Induced Nephrotoxicity in Mice. J Agric Food Chem 2018; 66:12385-12394. [PMID: 30360616 DOI: 10.1021/acs.jafc.8b04341] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Atrazine (ATR), an environmental persistent and bioaccumulative herbicide, has been associated with environmental nephrosis. Lycopene (LYC) exhibits important properties of nephroprotection, but there are limited data on the specific underlying mechanism. The primary objective of this study was to explore the therapeutic effect of LYC on ATR-induced nephrotoxicity in mice. The mice were divided randomly into 6 groups and treated as follows: control group (C), 5 mg/kg LYC group (L), 50 mg/kg ATR group (A1), 200 mg/kg ATR group (A2), 50 mg/kg ATR plus 5 mg/kg LYC group (A1+L), and 200 mg/kg ATR plus 5 mg/kg LYC group (A2+L) by oral gavage administration for 21 days. We found that pretreatment with LYC significantly suppressed the ATR-induced renal tubular epithelial cell swelling. Furthermore, LYC mitigated ATR-induced dysregulation of oxidative stress markers by reducing MDA, H2O2 levels, and increasing SOD, GPx, CAT concentration, and Nrf2 activation. Moreover, LYC activated the autophagic flux by a detectable change in autophagy-related genes (Beclin-1 and ATGs) and proteins (p62/SQSTM) and by the formation of autophagic vacuole (AV) and LC3 aggregation, in parallel with AMPK activation (pAMPK/AMPK). Herein, ATR-up-regulated nuclear factor erythroid 2-related factor 2 (Nrf2) expression and Nrf2-regulated redox genes, including quinoneoxidoreductase-1 (NQO1) and heme oxidase-1 (HO1), whereas LYC down-regulated those of the above genes. In addition, LYC suppressed ATR-induced activation of autophagy (increased LC3II/LC3I, ATGs, Beclin1, and p62, in parallel with increased AMPK activation). Collectively, our findings identified a cross talk between AMPK-activated autophagy and the Nrf2 signaling pathway in LYC-mediated nephroprotection against ATR-induced toxicity in mice kidney.
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Affiliation(s)
- Jia Lin
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Jun Xia
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Hua-Shan Zhao
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Rui Hou
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Milton Talukder
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
- Department of Physiology and Pharmacology, Faculty of Animal Science and Veterinary Medicine , Patuakhali Science and Technology University , Barishal 8210 , Bangladesh
| | - Lei Yu
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Jian-Ying Guo
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
| | - Jin-Long Li
- College of Veterinary Medicine , ‡Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment , and §Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine , Northeast Agricultural University , Harbin 150030 , P.R. China
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Zhang S, Liao X, Ma X, Zhang L, Lu L, Luo X. Relative bioavailability of ultrafine sodium selenite for broilers fed a conventional corn-soybean meal diet. J Anim Sci 2018; 96:4755-4767. [PMID: 30215747 PMCID: PMC6247847 DOI: 10.1093/jas/sky333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 08/10/2018] [Indexed: 11/14/2022] Open
Abstract
The particle size of selenium (Se) sources could affect Se absorption and utilization, and thus it is hypothesized that the Se bioavailability might be higher in ultrafine sodium selenite (USSe) than in sodium selenite (SSe) for broilers because of USSe's smaller particle size. An experiment was conducted to investigate the relative bioavailability of Se as USSe relative to SSe for broiler chicks fed a conventional corn-soybean meal diet. A total of 504 one-d-old Arbor Acres commercial male broilers were randomly allotted to 1 of 7 treatments with 6 replicates per treatment in a completely randomized design involving in a 2 (Se sources) × 3 (added Se levels) factorial arrangement of treatments plus a Se-unsupplemented control diet containing 0.05 mg Se/kg by analysis for 21 d. The 2 Se sources were USSe and SSe, and the 3 added Se levels were 0.15, 0.30, or 0.45 mg Se/kg. The Se concentrations, glutathione peroxidase (GSH-Px) activities, and mRNA relative abundances in plasma, liver, or pancreas of broilers on day 14 and 21 were determined. The results showed that Se concentrations, GSH-Px activities in plasma, liver, and pancreas, and mRNA relative abundances in the liver and pancreas of broilers on day 14 and 21 increased linearly (P < 0.05) as the added Se-level increased. Furthermore, a difference (P < 0.05) between USSe and SSe was detected for GSH-Px mRNA relative abundance in the pancreas of broilers on day 14. On the basis of the slope ratios from the multiple linear regression of the pancreatic GSH-Px mRNA relative abundance of broilers at 14 d of age on daily dietary analyzed Se intake, the Se bioavailability of USSe relative to SSe (100%) was 158% (P < 0.05). The results from this study indicated that the Se from USSe was more available to broilers than the Se from SSe in enhancing the pancreatic GSH-Px mRNA expression.
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Affiliation(s)
- Shumin Zhang
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Xiudong Liao
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Xuelian Ma
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Liyang Zhang
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Lin Lu
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Xugang Luo
- Mineral Nutrition Research Division, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
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170
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Hughes DJ, Kunická T, Schomburg L, Liška V, Swan N, Souček P. Expression of Selenoprotein Genes and Association with Selenium Status in Colorectal Adenoma and Colorectal Cancer. Nutrients 2018; 10:nu10111812. [PMID: 30469315 PMCID: PMC6266908 DOI: 10.3390/nu10111812] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 12/13/2022] Open
Abstract
Dietary selenium (Se) intake is essential for synthesizing selenoproteins that are important in countering oxidative and inflammatory processes linked to colorectal carcinogenesis. However, there is limited knowledge on the selenoprotein expression in colorectal adenoma (CRA) and colorectal cancer (CRC) patients, or the interaction with Se status levels. We studied the expression of seventeen Se pathway genes (including fifteen of the twenty-five human selenoproteins) in RNA extracted from disease-normal colorectal tissue pairs, in the discovery phase of sixty-two CRA/CRC patients from Ireland and a validation cohort of a hundred and five CRC patients from the Czech Republic. Differences in transcript levels between the disease and paired control mucosa were assessed by the Mann-Whitney U-test. GPX2 and TXNRD3 showed a higher expression and GPX3, SELENOP, SELENOS, and SEPHS2 exhibited a lower expression in the disease tissue from adenomas and both cancer groups (p-values from 0.023 to <0.001). In the Czech cohort, up-regulation of GPX1, SELENOH, and SOD2 and down-regulation of SELENBP1, SELENON, and SELENOK (p-values 0.036 to <0.001) was also observed. We further examined the correlation of gene expression with serum Se status (assessed by Se and selenoprotein P, SELENOP) in the Irish patients. While there were no significant correlations with both Se status markers, SELENOF, SELENOK, and TXNRD1 tumor tissue expression positively correlated with Se, while TXNRD2 and TXNRD3 negatively correlated with SELENOP. In an analysis restricted to the larger Czech CRC patient cohort, Cox regression showed no major association of transcript levels with patient survival, except for an association of higher SELENOF gene expression with both a lower disease-free and overall survival. Several selenoproteins were differentially expressed in the disease tissue compared to the normal tissue of both CRA and CRC patients. Altered selenoprotein expression may serve as a marker of functional Se status and colorectal adenoma to cancer progression.
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Affiliation(s)
- David J Hughes
- Cancer Biology and Therapeutics Group, UCD Conway Institute, University College Dublin, D04 V1W8 Dublin, Ireland.
| | - Tereza Kunická
- Biomedical Centre, Medical and Teaching School Pilsen, Charles University in Prague, 323 00 Pilsen, Czech Republic.
| | - Lutz Schomburg
- Institute for Experimental Endocrinology, University Medical School Berlin, D-13353 Berlin, Germany.
| | - Václav Liška
- Biomedical Centre, Medical and Teaching School Pilsen, Charles University in Prague, 323 00 Pilsen, Czech Republic.
- Teaching Hospital and Medical School, Charles University in Prague, 306 05 Pilsen, Czech Republic.
| | - Niall Swan
- Department of Pathology and Laboratory Medicine, St. Vincent's University Hospital, D04 T6F4 Dublin, Ireland.
| | - Pavel Souček
- Biomedical Centre, Medical and Teaching School Pilsen, Charles University in Prague, 323 00 Pilsen, Czech Republic.
- Teaching Hospital and Medical School, Charles University in Prague, 306 05 Pilsen, Czech Republic.
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Sunde RA, Zemaitis ET, Blink AB, Lawinger JA. Impact of Glutathione Peroxidase-1 (Gpx1) Genotype on Selenoenzyme and Transcript Expression When Repleting Selenium-Deficient Mice. Biol Trace Elem Res 2018; 186:174-184. [PMID: 29502249 DOI: 10.1007/s12011-018-1281-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/20/2018] [Indexed: 10/17/2022]
Abstract
Glutathione peroxidase (Gpx1) is the major selenoprotein in most tissues in animals. Knockout (KO) of Gpx1 decreases Gpx1 activity to near zero and substantially reduces liver selenium (Se) levels, but has no overt effects in otherwise healthy mice. To investigate the impact of deletion of Gpx1 on Se metabolism, Se flux, and apparent Se requirements, KO, Gpx1 heterozygous (Het), and Gpx1 wild-type (WT) mice were fed Se-deficient diet for 17 weeks, then repleted with graded levels of Se (0-0.3 μg Se/g as Na2SeO3) for 7 days, and selenoprotein activities and transcripts were determined in blood, liver, and kidney. Se deficiency decreased the activities of plasma Gpx3, liver Gpx1, liver Txnrd, and liver Gpx4 to 3, 0.3, 11, and 50% of WT Se-adequate levels, respectively, but the Gpx1 genotype had no effect on growth or changes in activity or expression of selenoproteins other than Gpx1. Se repletion increased selenoprotein transcripts to Se-adequate levels after 7 days; Se response curves and apparent Se requirements for selenoprotein transcripts were similar to those observed in studies starting with Se-adequate mice. With short-term Se repletion, selenoenzyme activities resulted in three Se response curve patterns: (1) liver and kidney Gpx1, Gpx4, and Txnrd activities were sigmoidal or hyperbolic with breakpoints (0.08-0.19 μg Se/g) that were double those observed in studies starting with Se-adequate mice; (2) red blood cell Gpx1 activity was not significantly changed; and (3) plasma Gpx3 activity only increased substantially with 0.3 μg Se/g. Plasma Gpx3 is secreted from kidney. In this short-term study, kidney Gpx3 mRNA reached plateau levels at 0.1 μg Se/g, and other kidney selenoenzyme activities reached plateau levels at ≤ 0.2 μg Se/g, so sufficient Se should have been present in kidney. Thus, the delayed increase in plasma Gpx3 activity suggests that newly synthesized and secreted kidney Gpx3 is preferentially retained in kidney or rapidly cleared by binding to basement membranes in kidney or in other tissues. This repletion study shows that loss of capacity to incorporate Se into Gpx1 in Gpx1 KO mice does not dramatically alter expression of other Se biomarkers, nor the short-term flux of Se from intestine to liver to kidney.
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Affiliation(s)
- Roger A Sunde
- Department of Nutritional Sciences, University of Wisconsin, 1415 Linden Drive, Madison, WI, 53706, USA.
| | - Edward T Zemaitis
- Department of Nutritional Sciences, University of Wisconsin, 1415 Linden Drive, Madison, WI, 53706, USA
| | - Andrew B Blink
- Department of Nutritional Sciences, University of Wisconsin, 1415 Linden Drive, Madison, WI, 53706, USA
| | - Julia A Lawinger
- Department of Nutritional Sciences, University of Wisconsin, 1415 Linden Drive, Madison, WI, 53706, USA
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172
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Chen Y, Liu X, Jiang C, Liu L, Ordovas JM, Lai CQ, Shen L. Curcumin supplementation increases survival and lifespan in Drosophila under heat stress conditions. Biofactors 2018; 44:577-587. [PMID: 30488487 DOI: 10.1002/biof.1454] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 08/08/2018] [Accepted: 08/15/2018] [Indexed: 11/07/2022]
Abstract
Harsh climate induces physiological stress thus compromising organismal survival. Our previous studies demonstrated that curcumin (CUR) supplementation increased survival of turtle under heat stress (HS). Here, we span this work to investigate the survival and lifespan of HS Drosophila fed a diet supplemented with CUR. For this purpose, female and male flies were fed basal diet (N) and CUR diet (0.2 mg/g), and exposed to three conditions: 25°C and 29°C continuously, and 34 °C for 2 h at days 1, 4, and 7, then kept at 25 °C. Lifespan analysis showed that, compared to N-25 °C flies, the mean lifespans of N-29 °C and N-34 °C flies were decreased significantly by 8.5-15.7% in males, and 3.7-7.9% in females. Conversely, in the CUR-supplemented diet, mean lifespans of C-29 °C and C-34 °C flies were significantly extended by 8.7-16.4% in males, and by 8.9-12.8% in females, compared to that of temperature-matched flies fed basal diets. The MDA levels of C-34 °C flies were significantly lower than those of N-34 °C flies, indicating CUR reduced oxidative stress caused by HS. Furthermore, CUR palliated the increased oxidative stress caused by HS, by increasing the expression of SOD1, CAT, and PHGPx and decreasing the expression of Hsp70 and Hsp83. Our results indicated that CUR supplementation increases the survival rate of Drosophila by enhancing thermal tolerance. © 2018 BioFactors, 44(6):577-587, 2018.
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Affiliation(s)
- Yong Chen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Xin Liu
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Chenmin Jiang
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
| | - Liang Liu
- Department of Statistics, The University of Georgia, Athens, GA, USA
| | - Jose M Ordovas
- Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
- IMDEA Alimentacion, Madrid, Spain
| | - Chao-Qiang Lai
- USDA ARS, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Lirong Shen
- Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang University, Zhejiang, Hangzhou, China
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Oyagbemi AA, Omobowale TO, Ola-Davies OE, Asenuga ER, Ajibade TO, Adejumobi OA, Afolabi JM, Ogunpolu BS, Falayi OO, Saba AB, Adedapo AA, Yakubu MA. Luteolin-mediated Kim-1/NF-kB/Nrf2 signaling pathways protects sodium fluoride-induced hypertension and cardiovascular complications. Biofactors 2018; 44:518-531. [PMID: 30474894 DOI: 10.1002/biof.1449] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 07/31/2018] [Accepted: 08/02/2018] [Indexed: 12/13/2022]
Abstract
The use of sodium fluoride (NaF) as a major ingredient for tooth paste, mouth wash, and mouth rinse has become inevitable in our day-to-day life. However, flavonoids such as Luteolin might be of great value in the prevention of toxicity associated with accidental or inevitable ingestion of NaF. In the study, 40 male Wistar albino rats were randomly divided into four groups with 10 rats in a group. Group A was the control group and received normal saline, Group B was exposed to NaF at 300 ppm (300 mg/L) in drinking water daily for a week, Groups C and D were exposed to 300 ppm (300 mg/L) of NaF and coadministered with Luteolin orally daily at a dosage of 100 mg/kg and 200 mg/kg for the same time point. Our results indicated that NaF caused significant increases in systolic blood pressure, diastolic blood pressure, mean arterial pressure, malondialdehyde, protein carbonyl, myeloperoxidase, advanced oxidative protein products, together with significant reductions in glutathione peroxidase, superoxide dismutase, catalase, glutathione reductase, reduced glutathione, and nitric oxide (NO) bioavailability. The electrocardiogram results showed that NaF alone caused significant prolongation of QT and QTc intervals. Immunohistochemistry revealed that NaF caused increase expressions of Kidney injury marker 1 (Kim-1), nuclear factor kappa bet (NF-κB), nuclear factor erythroid 2-related factors 2 (Nrf2), and cardiac troponin I (CTnI). Together, Luteolin coadministration with NaF improved NO bioavailability, reduced high blood pressure, markers of oxidative stress, reversed prolongation of QT and QTc intervals, and lowered the expressions of Kim-1, NF-κB, and CTnI. © 2018 BioFactors, 44(6):518-531, 2018.
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Affiliation(s)
- Ademola Adetokunbo Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Temidayo Olutayo Omobowale
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olufunke Eunice Ola-Davies
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebunoluwa Racheal Asenuga
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Benin, Benin City, Nigeria
| | - Temitayo Olabisi Ajibade
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olumuyiwa Abiola Adejumobi
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | | | - Blessing Seun Ogunpolu
- Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Olufunke Olubunmi Falayi
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adebowale Bernard Saba
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adeolu Alex Adedapo
- Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Momoh Audu Yakubu
- Department of Environmental and Interdisciplinary Sciences, College of Science, Engineering and Technology, NSB303, Sr. Scientist & Head, Vascular Biology Unit, Center for Cardiovascular Diseases, COPHS, Texas Southern University, Houston, TX, USA
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Zhang C, Chen K, Zhao X, Geng Z. Protective effects of resveratrol against high ambient temperature-induced spleen dysplasia in broilers through modulating splenic redox status and apoptosis. J Sci Food Agric 2018; 98:5409-5417. [PMID: 29675963 DOI: 10.1002/jsfa.9084] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/25/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Resveratrol has been shown to prevent high ambient temperature (HT)-induced spleen dysplasia, but the mechanisms of action are not clear. This study aims to examine the hypothesis that HT-induced spleen dysplasia may be associated with HT-induced oxidative stress and apoptosis, and resveratrol may activate the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway, thus reducing oxidative stress and apoptosis. RESULTS Results showed that HT caused spleen dysplasia in broilers, reflecting the lower relative weight of the spleen (P < 0.05). Compared with birds in a normal ambient temperature group, birds in the HT group exhibited higher (P < 0.05) malondialdehyde (MDA), protein carbonyl (PC), 8-hydroxydeoxyguanosine (8-OHdG) and Bcl-2 associated X protein (Bax) content, higher Bax, caspase-3 and caspase-9 mRNA levels, and caspase-3 and caspase-9 activity, and a higher Bax/B-cell lympoma/leukemia-2 (Bcl-2) ratio, but they exhibited lower (P < 0.05) glutathione (GSH) and Bcl-2 content, and lower Nrf2, glutathione peroxidase (Gpx), MnSOD, heme oxygenase 1, glutathione reductase (GR) and Bcl-2 mRNA levels, and lower total antioxidant capacity (T-AOC), T-SOD and catalase and maganese superoixide dismutase (CAT) activity, indicating HT-induced oxidative stress and apoptosis. Compared with birds in the HT group, birds in the HT + Res group exhibited higher (P < 0.05) GSH and Bcl-2 content, higher Nrf2, CAT, MnSOD, GR and Bcl-2 mRNA levels, and higher T-AOC, T-SOD and CAT activity, but lower (P < 0.05) MDA content, and Bax and caspase-3 mRNA levels, lower caspase-3 and caspase-9 activities, and Bax/Bcl-2 ratio, indicating that resveratrol activated the Nrf2 signaling pathway and decreased apoptosis in the spleen. CONCLUSION Resveratrol was effective in ameliorating HT-induced spleen dysplasia in broilers through the activation of the Nrf2 signaling pathway, thereby decreasing apoptosis, suggesting that resveratrol may offer a potential nutritional strategy to protect against some HT-induced detriments. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Cheng Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Kaikai Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xiaohui Zhao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Zhaoyu Geng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
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175
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Kang B, Wang X, Xu Q, Wu Y, Si X, Jiang D. Effect of 3-nitropropionic acid inducing oxidative stress and apoptosis of granulosa cells in geese. Biosci Rep 2018; 38:BSR20180274. [PMID: 30042167 PMCID: PMC6131328 DOI: 10.1042/bsr20180274] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 07/03/2018] [Accepted: 07/10/2018] [Indexed: 02/07/2023] Open
Abstract
The mechanism of action by which oxidative stress induces granulosa cell apoptosis, which plays a vital role in initiating follicular atresia, is not well understood. In the present study, the effect of 3-nitropropionic acid (3-NPA) on oxidative stress and apoptosis in granulosa cells in geese was investigated. Our results showed that treatment with 3-NPA at 5.0 mmol/l for 24 h increased intracellular reactive oxygen species (ROS) production by 25.4% and decreased granulosa cell viability by 45.5% (P<0.05). Catalase and glutathione peroxidase gene expression levels in granulosa cells treated with 3-NPA were 1.32- and 0.49-fold compared with those of the control cells, respectively (P <0.05). A significant decrease in the expression level of B-cell lymphoma 2 (Bcl-2) protein and remarkable increases in the levels of Bax, p53 and cleaved-Caspase 3 proteins and the ratio of Bax/Bcl-2 expression in granulosa cells treated with 3-NPA were observed (P<0.05). Furthermore, a 38.43% increase in the percentage of early apoptotic cells was also observed in granulosa cells treated with 3-NPA (P<0.05). Moreover, the expression levels of NF-κB, Nrf2, Fhc, Hspa2 and Ho-1 in granulosa cells treated with 3-NPA were elevated 4.36-, 1.63-, 3.62-, 27.54- and 10.48-fold compared with those of the control cells (P<0.05), respectively. In conclusion, the present study demonstrates that treatment with 3-NPA induces ROS production and apoptosis and inhibits the viability of granulosa cells in geese. Furthermore, 3-NPA triggers increases in the expression of cleaved-Caspase 3 protein and the ratio of Bax/Bcl-2 expression, and induces the early apoptosis of granulosa cells.
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Affiliation(s)
- Bo Kang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, People's Republic of China
| | - Xinxing Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, People's Republic of China
| | - Qilin Xu
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, People's Republic of China
- Institute of Animal Science, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu, People's Republic of China
| | - Yongsheng Wu
- Institute of Animal Science, Chengdu Academy of Agriculture and Forestry Sciences, Chengdu, People's Republic of China
| | - Xiaohui Si
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, People's Republic of China
| | - Dongmei Jiang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, People's Republic of China
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176
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Zhang L, Wu M, Yu D, Teng Y, Wei T, Chen C, Song W. Identification of Glutathione Peroxidase (GPX) Gene Family in Rhodiola crenulata and Gene Expression Analysis under Stress Conditions. Int J Mol Sci 2018; 19:E3329. [PMID: 30366446 PMCID: PMC6274781 DOI: 10.3390/ijms19113329] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 01/14/2023] Open
Abstract
Glutathione peroxidases (GPXs) are important enzymes in the glutathione-ascorbate cycle for catalyzing the reduction of H₂O₂ or organic hydroperoxides to water. GPXs play an essential role in plant growth and development by participating in photosynthesis, respiration, and stress tolerance. Rhodiola crenulata is a popular traditional Chinese medicinal plant which displays an extreme energy of tolerance to harsh alpine climate. The GPXs gene family might provide R. crenulata for extensively tolerance to environment stimulus. In this study, five GPX genes were isolated from R. crenulata. The protein amino acid sequences were analyzed by bioinformation softwares with the results that RcGPXs gene sequences contained three conserve cysteine residues, and the subcellular location predication were in the chloroplast, endoplasmic reticulum, or cytoplasm. Five RcGPXs members presented spatial and temporal specific expression with higher levels in young and green organs. And the expression patterns of RcGPXs in response to stresses or plant hormones were investigated by quantitative real-time PCR. In addition, the putative interaction proteins of RcGPXs were obtained by yeast two-hybrid with the results that RcGPXs could physically interact with specific proteins of multiple pathways like transcription factor, calmodulin, thioredoxin, and abscisic acid signal pathway. These results showed the regulation mechanism of RcGPXs were complicated and they were necessary for R. crenulata to adapt to the treacherous weather in highland.
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Affiliation(s)
- Lipeng Zhang
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Mei Wu
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Deshui Yu
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Yanjiao Teng
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Tao Wei
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Chengbin Chen
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Wenqin Song
- College of Life Science, Nankai University, Tianjin, 300071 China.
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177
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Han L, Yang Q, Ma W, Li J, Qu L, Wang M. Protocatechuic Acid Ameliorated Palmitic-Acid-Induced Oxidative Damage in Endothelial Cells through Activating Endogenous Antioxidant Enzymes via an Adenosine-Monophosphate-Activated-Protein-Kinase-Dependent Pathway. J Agric Food Chem 2018; 66:10400-10409. [PMID: 30220205 DOI: 10.1021/acs.jafc.8b03414] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Protocatechuic acid (PCA, 3,4-dihydroxybenzoic acid), the main metabolite of anthocyanins, is widely distributed in fruits and vegetables and has been reported to possess a strong antioxidant activity. Herein, we aimed to investigate the protective effect of PCA against high palmitic-acid (PA)-induced oxidative damage and the underling molecular mechanisms in human umbilical vein endothelial cells (HUVECs). PCA reduced the levels of intracellular reactive oxygen species and malondialdehyde and increased the activities of endogenous antioxidant enzymes, including superoxide dismutase, glutathione peroxidase 1, and heme oxygenase 1 (HO-1). Metabolomic analysis showed that PCA affected numerous metabolites, especially some of which were related with energy metabolism. PCA also upregulated the phosphorylation of adenosine-monophosphate-activated protein kinase (AMPK) at Thr172 through activating liver kinase B1 and then promoted the expression of p-Nrf2 and HO-1. Moreover, PCA reversed the decreased expression of peroxisome proliferator-activated receptor γ coactivator 1α and significantly increased the mitochondrial density. Collectively, these results demonstrated that PCA attenuated PA-induced oxidative damage in HUVECs via an AMPK-dependent pathway.
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Affiliation(s)
- Lin Han
- The Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs, College of Biology and Food Engineering , Chongqing Three Gorges University , Chongqing 404100 , People's Republic of China
| | | | | | | | - Liuzhu Qu
- The Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area's Medicinal Herbs, College of Biology and Food Engineering , Chongqing Three Gorges University , Chongqing 404100 , People's Republic of China
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178
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Shin EJ, Hwang YG, Pham DT, Lee JW, Lee YJ, Pyo D, Jeong JH, Lei XG, Kim HC. Glutathione peroxidase-1 overexpressing transgenic mice are protected from neurotoxicity induced by microcystin-leucine-arginine. Environ Toxicol 2018; 33:1019-1028. [PMID: 30076769 DOI: 10.1002/tox.22580] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 05/15/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
Although it has been well-recognized that microcystin-leucine-arginine (MCLR), the most common form of microcystins, induces neurotoxicity, little is currently known about the underlying mechanism for this neurotoxicity. Here, we found that MCLR (10 ng/μL/mouse, i.c.v.) induces significant neuronal loss in the hippocampus of mice. MCLR-induced neurotoxicity was accompanied by oxidative stress, as shown by a significant increase in the level of 4-hydroxynonenal, protein carbonyl, and reactive oxygen species (ROS). Superoxide dismutase-1 (SOD-1) activity was significantly increased, but glutathione peroxidase (GPx) level was significantly decreased following MCLR insult. In addition, MCLR significantly inhibited GSH/GSSG ratio, and significantly induced NFκB DNA binding activity. Because reduced activity of GPx appeared to be critical for the imbalance between activities of SODs and GPx, we utilized GPx-1 overexpressing transgenic mice to ascertain the role of GPx-1 in this neurotoxicity. Genetic overexpression of GPx-1 or NFκB inhibitor pyrrolidine dithiocarbamate (PDTC) significantly attenuated MCLR-induced hippocampal neuronal loss in mice. However, PDTC did not exert any additive effect on neuroprotection mediated by GPx-1 overexpression, indicating that NFκB is a neurotoxic target of MCLR. Combined, these results suggest that MCLR-induced neurotoxicity requires oxidative stress associated with failure in compensatory induction of GPx, possibly through activation of the transcription factor NFκB.
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Affiliation(s)
- Eun-Joo Shin
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Yeong Gwang Hwang
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Duc Toan Pham
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Ji Won Lee
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Yu Jeung Lee
- Clinical Pharmacy, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Dongjin Pyo
- Department of Chemistry, College of Natural Sciences, Kangwon National University, Republic of Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Xin Gen Lei
- Department of Animal Science, Cornell University, New York
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Republic of Korea
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179
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Reddy AT, Lakshmi SP, Banno A, Reddy RC. Role of GPx3 in PPARγ-induced protection against COPD-associated oxidative stress. Free Radic Biol Med 2018; 126:350-357. [PMID: 30118830 PMCID: PMC6368849 DOI: 10.1016/j.freeradbiomed.2018.08.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/01/2018] [Accepted: 08/13/2018] [Indexed: 12/24/2022]
Abstract
Cigarette smoke, a source of numerous oxidants, produces oxidative stress and exaggerated inflammatory responses that lead to irreversible lung tissue damage. It is the single, most significant risk factor for chronic obstructive pulmonary disease (COPD). Although an intrinsic defense system that includes both enzymatic and non-enzymatic modulators exists to protect lung tissues against oxidative stress, impairment of these protective mechanisms has been demonstrated in smokers and COPD patients. The antioxidant enzyme GSH peroxidase (GPx) is an important part of this intrinsic defense system. Although cigarette smoke has been shown to downregulate its expression and activity, the underlying mechanism is not known. Peroxisome proliferator-activated receptor γ (PPARγ) is a nuclear hormone receptor with antioxidant effects. PPARγ activation has demonstrated protective effects against cigarette smoke-induced oxidative stress and inflammation. Molecular mechanisms for PPARγ's antioxidant function likewise remain to be elucidated. This study explored the link between PPARγ and GPx3 and found a positive association in cigarette smoke extract (CSE)-exposed human bronchial epithelial cells. Moreover, we provide evidence that identifies GPx3 as a PPARγ transcriptional target. Attenuation of antioxidant effects in the absence of GPx3 highlights the antioxidant's prominent role in mediating PPARγ's function. We also demonstrate that ligand-mediated PPARγ activation blocks CSE-induced reactive oxygen species and hydrogen peroxide production via upregulation of GPx3. In summary, our findings describing the molecular mechanisms involving GPx3 and PPARγ in CSE-induced oxidative stress and inflammation may provide valuable information for the development of more effective therapeutics for COPD.
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Affiliation(s)
- Aravind T Reddy
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Sowmya P Lakshmi
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA
| | - Asoka Banno
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Raju C Reddy
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.
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180
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Post M, Lubiński W, Lubiński J, Krzystolik K, Baszuk P, Muszyńska M, Marciniak W. Serum selenium levels are associated with age-related cataract. Ann Agric Environ Med 2018; 25:443-448. [PMID: 30260193 DOI: 10.26444/aaem/90886] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE The aim of the study is to analyse correlations between age-related cataract (ARC), serum selenium levels and glutathione peroxidase gene 1 and 4 (GPX-1 and GPX-4). MATERIAL AND METHODS A total sample of 275 participants were enrolled into the study: group A, 94 subjects elligible for ARC surgery, and group B, 181 volunteers without ocular symptoms, gender-, age-, and smoking- status and volume-matched at 1:2 with subjects in group A. All participants (n=275) were divided according to the Lens Opacities Classification System III (LOCS III) into: 1) study group (subjects with clinically significant cataract; N≥3 or C≥3 or P≥2), 2) control group (controls with clinically non-significant cataract; N<3 and C<3 and P<2). The single nucleotide polymorphisms of GPX-1 and GPX-4 were assessed using Real Time PCR. Serum selenium levels were assayed using Inductively Coupled Plasma Mass Spectrometry. RESULTS Low selenium levels significantly predicted any age-related cataract (OR 7.969; p<.01), nuclear cataract (OR 12.823; p<.01) and cortical cataract (OR 3.31; p<.01). There was no significant effect of gender, age, SNP GPX-1 and SNP GPX-4 on the prevalence of age-related nuclear, cortical and posterior sub-capsular cataract. Serum selenium levels of 75-85 µg/L were associated with the lowest prevalence of ARC. CONCLUSIONS Due to a confirmed association between serum selenium levels and age-related cataract, low serum selenium levels may constitute a potential risk factor of age-related cataract.
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Affiliation(s)
- Michał Post
- 2nd Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland.
| | - Wojciech Lubiński
- 2nd Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland.
| | - Jan Lubiński
- Department of Genetics and Pathomorphology, Pomeranian Medical University, Szczecin, Poland.
| | - Karol Krzystolik
- 1st Department of Ophthalmology, Pomeranian Medical University, Szczecin, Poland.
| | - Piotr Baszuk
- Department of Genetics and Pathomorphology, Pomeranian Medical University, Szczecin, Poland.
| | - Magdalena Muszyńska
- Department of Genetics and Pathomorphology, Pomeranian Medical University, Szczecin, Poland.
| | - Wojciech Marciniak
- Department of Genetics and Pathomorphology, Pomeranian Medical University, Szczecin, Poland.
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181
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Strauss E, Tomczak J, Staniszewski R, Oszkinis G. Associations and interactions between variants in selenoprotein genes, selenoprotein levels and the development of abdominal aortic aneurysm, peripheral arterial disease, and heart failure. PLoS One 2018; 13:e0203350. [PMID: 30188935 PMCID: PMC6126836 DOI: 10.1371/journal.pone.0203350] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/20/2018] [Indexed: 11/25/2022] Open
Abstract
Background Little is known on the role of selenoprotein genes in cardiovascular disease. This study examines the associations of the SEPP1, SELENOS, TXNRD1, TXNRD2, GPX4, and SOD2 polymorphisms and selenoprotein P (SeP) and thioredoxin concentrations with the development of abdominal aortic aneurysm (AAA) and aortoiliac occlusive disease (AOID), as well as their influence on cardiac phenotype. Methods 564 patients with AAA, 400 patients with AIOD, and 543 controls were enrolled and characterized for coronary artery disease, myocardial infarction, and systolic heart failure (HF) occurrence. In AAA, the coexistence of peripheral arterial disease (PAD) was examined. Genotypes were determined using TaqMan-based assays. Selenoprotein concentration was assessed using the ELISA method. Results The SELENOS rs34713741T, SEPP1 rs3877899A, and GPX4 rs713041T alleles were related to a 30–60% increase in the AIOD/PAD risk in the recessive or dominant model (all associations at P < .05). The SEPP1 rs3877899A allele was a protective factor for the development of AAA without concomitant PAD (OR = 0.68 for the dominant model, P = .014), but not AAA with concomitant PAD. The cumulative two-locus effects of selenoprotein genes on the AAA/AIOD risk were observed, including the multiplicative interaction between the SELENOS rs34713741T and GPX4 rs713041T alleles (both in the recessive model) affecting the AIOD risk (OR = 5.27, P = .001) and its clinical phenotype. Coexistence of HF in aortic diseases was related to both the SEPP1 rs7579A allele (OR = 1.83 for carriers, P = .013) and increased SeP concentrations; SeP level ≥8.5 mg/mL caused a 3.5-fold increase in the risk of HF. In AAA, SeP levels were correlated with BMI (r = -0.575, P < .0001). Conclusions Our results provide evidence that selenoprotein polymorphisms constitute a risk factor for HF and peripheral atherosclerosis, but prevent the development of AAA. Excessive weight might result in reduced antioxidant reserve efficiency in AAA. Validation studies are required to establish whether SeP concentration may be a marker for HF.
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Affiliation(s)
- Ewa Strauss
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
- Department of General and Vascular Surgery, Poznan University of Medical Sciences, Poznan, Poland
- * E-mail:
| | - Jolanta Tomczak
- Department of General and Vascular Surgery, Poznan University of Medical Sciences, Poznan, Poland
| | - Ryszard Staniszewski
- Department of Vascular and Endovascular Surgery, Angiology and Phlebology, Poznan University of Medical Sciences, Poznan, Poland
| | - Grzegorz Oszkinis
- Department of General and Vascular Surgery, Poznan University of Medical Sciences, Poznan, Poland
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182
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Wang H, Pan L, Si L, Miao J. The role of Nrf2-Keap1 signaling pathway in the antioxidant defense response induced by PAHs in the calm Ruditapes philippinarum. Fish Shellfish Immunol 2018; 80:325-334. [PMID: 29920381 DOI: 10.1016/j.fsi.2018.06.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 06/10/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
The NF-E2-related factor 2 (Nrf2) is a master regulator of cellular responses against environmental stresses. In this study we cloned the full-length cDNAs of the RpNrf2 encompassed 2823 bp from the clam Ruditapes philippinarum (R. philippinarum). Sequences alignment and phylogenetic analysis showed that Nrf2 was highly specific in the clams. RpNrf2 expression was detected in gill, digestive gland, mantle and adductor, which the highest transcription level was observed in gill and digestive gland. The gene expressions of RpNrf2, Kelch-like-ECH-associated Protein 1 (Keap1), Cul3-based E3 Ubiquitin Ligase (E3), Glutathione S-transferase (GST-pi), Superoxide Dismutase (SOD), Catalase (CAT) and Glutathione Peroxidase (GPx) in digestive gland was evaluated by real-time PCR after being exposed to benzo(a)pyrene (BaP) (0.25, 1and 4 μg/L) for 15 days, which showed that the expression of Nrf2 significantly increased at day 1 and day 6 after exposure (p < 0.05), and there was a negative relationship between the mRNA levels of Nrf2 and Keap1 that indicates the enhancement of Keap1 expression stimulating Nrf2 degradation. RNA interference experiments were conducted to examine the expression profiles of RpNrf2, antioxidant and detoxification genes (GST-pi, Cu/Zn-SOD, CAT and GPx) and Lipid Peroxidase (LPO) level in digestive gland exposed to BaP. The results showed that the mRNA level of Nrf2 was significantly decreased by 63.2%, and the changes of antioxidant and detoxification genes expression were consistent with the Nrf2 gene suggesting that Nrf2 is required for the induction of antioxidant and detoxification genes. Besides, the LPO levels expressed by malondialdehyde (MDA) contents were significant higher compared with the control group at 72 h post dsRNA-Nrf2 injection. In conclusion, our data demonstrated that Keap1 can sense nucleophilic or oxidative stress factors to regulate the Nrf2 signaling pathway together with E3 and Nrf2 signaling pathway plays an important role in modulating gene expression of antioxidant enzymes in bivalve mollusks.
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Affiliation(s)
- Hongdan Wang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China.
| | - Lingjun Si
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Jingjing Miao
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
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183
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Abstract
Selenium (Se) is an essential micronutrient involved in important metabolic functions for all vertebrate species. As Se is reported to have a narrow margin between essentiality and toxicity, there is growing concern surrounding the adverse effects of elevated Se exposure caused by anthropogenic activities. Recent studies have reported that elevated dietary exposure of fish to selenomethionine (Se-Met) can alter aerobic metabolic capacity, energetics and swimming performance. This study aims to further investigate mechanisms of sublethal Se-Met toxicity, particularly potential underlying cardiovascular implications of chronic exposure to environmentally relevant concentrations of dietary Se-Met in adult zebrafish (Danio rerio). Adult zebrafish were fed either control food (1.1 μg Se/g dry mass [d.m.]) or Se-Met spiked food (10.3 or 28.8 μg Se/g d.m.) for 90 d at 5% body weight per day. Following exposure, ultrahigh resolution B-mode and Doppler ultrasound was used to characterize cardiac function. Chronic dietary exposure to elevated Se-Met significantly reduced ventricular contractile rate, stroke volume, and cardiac output. Exposure to Se-Met significantly decreased mRNA expression of methionine adenosyltransferase 1 alpha and glutathione-S-transferase pi class in liver, and a key cardiac remodelling enzyme, matrix metalloproteinase 2, in adult zebrafish heart. Se-Met significantly increased echodensity at the junction between atrium and ventricle, and these results combined with increased matrix metalloproteinase 2 expression are consistent with cardiac remodelling and fibrosis. The results of this study suggest that chronic exposure to dietary Se-Met can negatively impact cardiac function, and such physiological consequences could reduce the aerobic capacity and survivability of fish.
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Affiliation(s)
- Connor M Pettem
- Toxicology Graduate Program University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Lynn P Weber
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B4, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - David M Janz
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B4, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
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184
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Liu J, Zheng F, Cheng R, Li S, Rozovsky S, Wang Q, Wang L. Site-Specific Incorporation of Selenocysteine Using an Expanded Genetic Code and Palladium-Mediated Chemical Deprotection. J Am Chem Soc 2018; 140:8807-8816. [PMID: 29984990 PMCID: PMC6082430 DOI: 10.1021/jacs.8b04603] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Selenoproteins containing the 21st amino acid selenocysteine (Sec) exist in all three kingdoms of life and play essential roles in human health and development. The distinct low p Ka, high reactivity, and redox property of Sec also afford unique routes to protein modification and engineering. However, natural Sec incorporation requires idiosyncratic translational machineries that are dedicated to Sec and species-dependent, which makes it challenging to recombinantly prepare selenoproteins with high Sec specificity. As a consequence, the function of half of human selenoproteins remains unclear, and Sec-based protein manipulation has been greatly hampered. Here we report a new general method enabling the site-specific incorporation of Sec into proteins in E. coli. An orthogonal tRNAPyl-ASecRS was evolved to specifically incorporate Se-allyl selenocysteine (ASec) in response to the amber codon, and the incorporated ASec was converted to Sec in high efficiency through palladium-mediated cleavage under mild conditions compatible with proteins and cells. This approach completely obviates the natural Sec-dedicated factors, thus allowing various selenoproteins, regardless of Sec position and species source, to be prepared with high Sec specificity and enzyme activity, as shown by the preparation of human thioredoxin and glutathione peroxidase 1. Sec-selective labeling in the presence of Cys was also demonstrated on the surface of live E. coli cells. The tRNAPyl-ASecRS pair was further used in mammalian cells to incorporate ASec, which was converted into Sec by palladium catalyst in cellulo. This robust and versatile method should greatly facilitate the study of diverse natural selenoproteins and the engineering of proteins in general via site-specific introduction of Sec.
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Affiliation(s)
- Jun Liu
- University of California, San Francisco, Department of Pharmaceutical Chemistry, 555 Mission Bay Blvd. South, San Francisco, CA, 94158
| | - Feng Zheng
- Hangzhou Research Institute of Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China, 310018
| | - Rujin Cheng
- University of Delaware, Department of Chemistry and Biochemistry, Newark, DE, 19716
| | - Shanshan Li
- University of California, San Francisco, Department of Pharmaceutical Chemistry, 555 Mission Bay Blvd. South, San Francisco, CA, 94158
- Department of Chemistry and Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, Georgia 30302, United States
| | - Sharon Rozovsky
- University of Delaware, Department of Chemistry and Biochemistry, Newark, DE, 19716
| | - Qian Wang
- Hangzhou Research Institute of Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China, 310018
| | - Lei Wang
- University of California, San Francisco, Department of Pharmaceutical Chemistry, 555 Mission Bay Blvd. South, San Francisco, CA, 94158
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185
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Kang R, Zeng L, Zhu S, Xie Y, Liu J, Wen Q, Cao L, Xie M, Ran Q, Kroemer G, Wang H, Billiar TR, Jiang J, Tang D. Lipid Peroxidation Drives Gasdermin D-Mediated Pyroptosis in Lethal Polymicrobial Sepsis. Cell Host Microbe 2018; 24:97-108.e4. [PMID: 29937272 PMCID: PMC6043361 DOI: 10.1016/j.chom.2018.05.009] [Citation(s) in RCA: 356] [Impact Index Per Article: 59.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/25/2018] [Accepted: 05/18/2018] [Indexed: 12/18/2022]
Abstract
Sepsis is a life-threatening condition caused by pathogen infection and associated with pyroptosis. Pyroptosis occurs upon activation of proinflammatory caspases and their subsequent cleavage of gasdermin D (GSDMD), resulting in GSDMD N-terminal fragments that form membrane pores to induce cell lysis. Here, we show that antioxidant defense enzyme glutathione peroxidase 4 (GPX4) and its ability to decrease lipid peroxidation, negatively regulate macrophage pyroptosis, and septic lethality in mice. Conditional Gpx4 knockout in myeloid lineage cells increases lipid peroxidation-dependent caspase-11 activation and GSDMD cleavage. The resultant N-terminal GSDMD fragments then trigger macrophage pyroptotic cell death in a phospholipase C gamma 1 (PLCG1)-dependent fashion. Administration of the antioxidant vitamin E that reduces lipid peroxidation, chemical inhibition of PLCG1, or genetic Caspase-11 deletion or Gsdmd inactivation prevents polymicrobial sepsis in Gpx4-/- mice. Collectively, this study suggests that lipid peroxidation drives GSDMD-mediated pyroptosis and hence constitutes a potential therapeutic target for lethal infection.
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Affiliation(s)
- Rui Kang
- The Third Affiliated Hospital, Center for DAMP Biology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Protein Modification and Degradation Laboratory of Guangdong Higher Education Institutes, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510510, China; Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Ling Zeng
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Research Institute for Traffic Medicine of People's Liberation Army, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Shan Zhu
- The Third Affiliated Hospital, Center for DAMP Biology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Protein Modification and Degradation Laboratory of Guangdong Higher Education Institutes, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510510, China
| | - Yangchun Xie
- Department of Oncology, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410008, China
| | - Jiao Liu
- The Third Affiliated Hospital, Center for DAMP Biology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Protein Modification and Degradation Laboratory of Guangdong Higher Education Institutes, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510510, China
| | - Qirong Wen
- The Third Affiliated Hospital, Center for DAMP Biology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Protein Modification and Degradation Laboratory of Guangdong Higher Education Institutes, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510510, China
| | - Lizhi Cao
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Min Xie
- Department of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qitao Ran
- Department of Cell Systems and Anatomy, University of Texas Health Science Center, Research Service, South Texas Veterans Health Care System, San Antonio, TX 78229, USA
| | - Guido Kroemer
- Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; Equipe 11 Labellisée Ligue Nationale Contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; Institut National de La Santé et de La Recherche Médicale, U1138 Paris, France; Université Pierre et Marie Curie, 75006 Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, 94800 Villejuif, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France; Department of Women's and Children's Health, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Haichao Wang
- Laboratory of Emergency Medicine, North Shore University Hospital, The Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Jianxin Jiang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Research Institute for Traffic Medicine of People's Liberation Army, Daping Hospital, Third Military Medical University, Chongqing 400042, China.
| | - Daolin Tang
- The Third Affiliated Hospital, Center for DAMP Biology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory of Protein Modification and Degradation Laboratory of Guangdong Higher Education Institutes, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510510, China; Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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186
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Nikic P, Dragicevic D, Savic-Radojevic A, Pljesa-Ercegovac M, Coric V, Jovanovic D, Bumbasirevic U, Pekmezovic T, Simic T, Dzamic Z, Matic M. Association between GPX1 and SOD2 genetic polymorphisms and overall survival in patients with metastatic urothelial bladder cancer: a single-center study in Serbia. J BUON 2018; 23:1130-1135. [PMID: 30358222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE Purpose: Urothelial bladder cancer (UBC) is the most common malignancy of urinary tract in the developed world. In metastatic UBC, systemic chemotherapy still remains the mainstay of initial treatment. Inter-individual differences in treatment outcome partially may be the consequence of genetic variations in enzymes that modulate oxidative stress. Therefore, we aimed to determine the potential prognostic role of single nucleotide polymorphism (SNP) of the two antioxidant enzymes glutathione peroxidase 1 (GPX1) and superoxide dismutase 2 (SOD2) in metastatic UBC patients treated with cisplatin-based chemotherapy. METHODS Methods: This prospective single-center hospital-based case-control study included 33 patients with metastatic UBC treated with cisplatin-based chemotherapy and 227 healthy controls. GPX1 SNP (rs1050450) was assessed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and SOD2 SNP (rs4880) was determined by quantitative PCR (q-PCR). Overall survival (OS) was evaluated using Kaplan–Meier survival analysis during 2-year follow up period, with the log-rank test for prognostic significance. RESULTS Results: No significant difference was observed in the distributions of GPX1 and SOD2 gene variants between patients and controls (p˃0.05). Regarding GPX1 polymorphism, no impact of GPX1 polymorphism on OS could be demonstrated (p˃0.05). Finally, Kaplan-Meier survival analysis showed no association between SOD2 polymorphism and OS (p˃0.05). CONCLUSIONS Conclusions: No association was found between polymorphism of GPX1 and SOD2 and OS in patients with metastatic urothelial bladder cancer treated with cisplatin-based chemotherapy.
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Affiliation(s)
- Predrag Nikic
- Clinic of Urology, Clinical Center of Serbia, Belgrade, Serbia
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187
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Xie X, Chen M, Zhu A. Molecular characterization and functional analysis of two phospholipid hydroperoxide isoforms from Larimichthys crocea under Vibrio parahaemolyticus challenge. Fish Shellfish Immunol 2018; 78:259-269. [PMID: 29702237 DOI: 10.1016/j.fsi.2018.04.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
Glutathione peroxidases family is a key role in the antioxidant system in oxybiotic organisms for cell redox homeostasis. One of their members, phospholipid hydroperoxide glutathione peroxidase (GPx4) have unique monomeric structure and can directly react with complex lipid and membrane-bound peroxides under the presence of glutathione(GSH). In this paper, two complete GPx4 cDNAs (designated as LcGPx4a and LcGPx4b) from Larimichthys crocea are identified by rapid amplification of cDNA ends. The cDNA of LcGPx4a was consisted of a 5'-untranslated region (UTR) of 258 bp, a 3'-UTR of 330 bp, and an open reading frame (ORF) of 561 bp encoding 186 amino acid (aa) polypeptides. And the full-length sequence of LcGPx4b was 1164 bp with a 5'-UTR of 34 bp, a 3'-UTR of 551 bp and an ORF of 576 bp encoding a polypeptide of 191 aa residues with a predicted signal peptide of 15 aa. The characteristic selenocysteine insertion (SECIS) sequence was detected in the 3'UTR of the two sequences with 78 bp in length. The conserved active site of selenocysteine (Sec) encoded by TGA was also identified and formed a tetrad functional structure with glutamine, tryptophan, and asparagine in LcGPx4a and LcGPx4b. Two signature site motifs ("LRILAFPSNQFGNQEPG" and "LRILGFPCNQFGGQEPG") were both conserved in the deduced amino acid of LcGPx4a and LcGPx4b. The genomic structure analysis revealed that the two sequences both had 7 exons and 6 introns, and the Sec opal codon and SECIS element were located at the third and seventh exons, respectively. LcGPx4a and LcGPx4b both have a wide distribution in 9 tissues with various relative expression levels and a highest expression pattern in the liver. Under Vibrio parahaemolyticus challenge, their relative expression levels were altered in the liver, spleen, kidney, and head kidney but with different magnitudes and response time. LcGPx4a and LcGPx4b showed a significantly up-regulated trend in the spleen during experimental period. Above results suggested that LcGPx4a and LcGPx4b were two conserved immune molecules and might play a role in the immune response of fish with a tissue-depemdent manners.
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Affiliation(s)
- Xiaoze Xie
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Mengnan Chen
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Aiyi Zhu
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China.
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188
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Yu P, Liu Z, Wu D, Chen M, Lv W, Zhao Y. Accumulation of polystyrene microplastics in juvenile Eriocheir sinensis and oxidative stress effects in the liver. Aquat Toxicol 2018; 200:28-36. [PMID: 29709883 DOI: 10.1016/j.aquatox.2018.04.015] [Citation(s) in RCA: 313] [Impact Index Per Article: 52.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/09/2018] [Accepted: 04/22/2018] [Indexed: 05/06/2023]
Abstract
As a widespread and ubiquitous pollutant of marine ecosystems, microplastic has the potential to become an emerging global threat for aquatic organisms. The present study aims to elucidate the effects of microplastics on the growth, accumulation and oxidative stress response in the liver of Eriocheir sinensis. Fluorescent microplastic particles (diameter = 0.5 μm) accumulated in the gill, liver and gut tissues of E. sinensis were investigated when crabs were exposed to a concentration of 40000 μg/L for 7 days. A 21 day toxicity test suggested that the rate of weight gain, specific growth rate, and hepatosomatic index of E. sinensis decreased with increasing microplastic concentration (0 μg/L, 40 μg/L, 400 μg/L, 4000 μg/L and 40000 μg/L). The activities of AChE and GPT in crabs exposed to microplastics were lower than those in control group. GOT activity increased significantly after exposure to a low concentration of microplastics and then decreased continuously with increasing microplastic concentrations. The activities of superoxide dismutase (SOD), aspartate transaminase (GOT), glutathione (GSH), and glutathione peroxidase (GPx) increased in specimens exposed to low concentrations of microplastics (40 and 400 μg/L) compared to the control and decreased in organisms exposed to high concentrations (4000 and 40000 μg/L). In contrast, the activities of acetylcholinesterase, catalase (CAT), and alanine aminotransferase were significantly lower in the organisms exposed to microplastics compared to control animals. Upon exposure to increasing microplastic concentrations, the expression of genes encoding the antioxidants SOD, CAT, GPx and glutathione S-transferase in the liver decreased after first increasing. Exposure to microplastics increased the expression of the gene encoding p38 in the MAPK signaling pathway and significantly decreased the expressions of genes encoding ERK, AKT, and MEK. The results of this study demonstrate that microplastics can accumulate in the tissues of E. sinensis and negatively affect growth. In addition, exposure to microplastics causes damage and induces oxidative stress in the hepatopancreas of E. sinensis. The findings provide basic biological data for environmental and human risk assessments of microplastics of high concern.
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Affiliation(s)
- Ping Yu
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Zhiquan Liu
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Donglei Wu
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Minghai Chen
- School of Life Science, East China Normal University, Shanghai, 200241, China
| | - Weiwei Lv
- Institute of Eco-Environment and Plant Protection, Shanghai Academy of Agriculture Sciences, Shanghai, 201403, China
| | - Yunlong Zhao
- School of Life Science, East China Normal University, Shanghai, 200241, China.
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189
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Liu D, Liu L, Hu Z, Song Z, Wang Y, Chen Z. Evaluation of the oxidative stress-related genes ALOX5, ALOX5AP, GPX1, GPX3 and MPO for contribution to the risk of type 2 diabetes mellitus in the Han Chinese population. Diab Vasc Dis Res 2018; 15:336-339. [PMID: 29383971 DOI: 10.1177/1479164118755044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIM Type 2 diabetes mellitus is a polygenic metabolic disorder resulting from oxidative stress, the root cause of insulin resistance, β-cell dysfunction and impaired glucose tolerance. The aim of this study was to investigate the role of oxidative stress-related genes ALOX5, ALOX5AP, GPX1, GPX3 and MPO in type 2 diabetes mellitus susceptibility in the Chinese Han population. METHODS A total of 396 type 2 diabetes mellitus patients and 678 controls were recruited. The ALOX5 rs10900213, ALOX5AP rs4293222, GPX1 rs1050450, GPX3 rs3828599 and MPO rs2107545 gene polymorphisms were genotyped. RESULTS We found one single-nucleotide polymorphism in the MPO gene was associated with type 2 diabetes mellitus susceptibility [rs2107545: odds ratio = 1.563 (1.166-2.096); p = 0.003], after adjusting for covariates. Furthermore, we also considered the likely complexity of effects of genetic and conventional risk factors in type 2 diabetes mellitus-related vascular complications, such as carotid plaques. Our analysis revealed that the GPX1 rs1050450 and MPO rs2107545 were significantly associated with increased risk of carotid plaques in type 2 diabetes mellitus patients. CONCLUSION Our study presents novel evidence for main effects of MPO gene on type 2 diabetes mellitus susceptibility. Furthermore, our study supported the association between variants of oxidative stress-related genes ( GPX1 and MPO) and carotid plaques in type 2 diabetes mellitus patients, which indicated a modulation of type 2 diabetes mellitus-related vascular complication susceptibility by genetic predisposition.
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Affiliation(s)
- Ding Liu
- 1 Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Lei Liu
- 2 Department of Health Management Centre, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Zhongyang Hu
- 1 Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Zhi Song
- 1 Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Yaqin Wang
- 2 Department of Health Management Centre, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
| | - Zhiheng Chen
- 2 Department of Health Management Centre, The Third Xiangya Hospital, Central South University, Changsha, P.R. China
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190
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Long M, Chen X, Wang N, Wang M, Pan J, Tong J, Li P, Yang S, He J. Proanthocyanidins Protect Epithelial Cells from Zearalenone-Induced Apoptosis via Inhibition of Endoplasmic Reticulum Stress-Induced Apoptosis Pathways in Mouse Small Intestines. Molecules 2018; 23:molecules23071508. [PMID: 29933637 PMCID: PMC6099583 DOI: 10.3390/molecules23071508] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/17/2018] [Accepted: 06/19/2018] [Indexed: 12/20/2022] Open
Abstract
This study evaluated the protective effect of proanthocyanidins (PCs) on reducing apoptosis in the mouse intestinal epithelial cell model MODE-K exposed to zearalenone (ZEA) through inhibition of the endoplasmic reticulum stress (ERS)-induced apoptosis pathway. Our results showed that PCs could reduce the rate of apoptosis in MODE-K cells exposed to ZEA (p < 0.01). PCs significantly increased the ZEA-induced antioxidant protective effects on the enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) and on the content of GSH. PCs also significantly decreased the ZEA-induced increase in the content of malondialdehyde (MDA). The analysis indicated that ZEA increased both mRNA and protein expression levels of C/EBP homologous protein (CHOP), GRP78, c-Jun N-terminal kinase (JNK), and cysteinyl aspartate specific proteinase 12 (caspase-12) (p < 0.05), which are related to the ERS-induced apoptosis pathway. ZEA decreased levels of the pro-apoptotic related protein Bcl-2 (p < 0.05) and increased the anti-apoptotic related protein Bax (p < 0.05). Co-treatment with PCs was also shown to significantly reverse the expression levels of these proteins in MODE-K cells. The results demonstrated that PCs could protect MODE-K cells from oxidative stress and apoptosis induced by ZEA. The underlying mechanism may be that PCs can alleviate apoptosis in mouse intestinal epithelial cells by inhibition of the ERS-induced apoptosis pathway.
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Affiliation(s)
- Miao Long
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Xinliang Chen
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Nan Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Mingyang Wang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jiawen Pan
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jingjing Tong
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Peng Li
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Shuhua Yang
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jianbin He
- Key Laboratory of Zoonosis of Liaoning Province, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China.
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191
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Falkowski M, Maciejczyk M, Koprowicz T, Mikołuć B, Milewska A, Zalewska A, Car H. Whey Protein Concentrate WPC-80 Improves Antioxidant Defense Systems in the Salivary Glands of 14-Month Wistar Rats. Nutrients 2018; 10:nu10060782. [PMID: 29914217 PMCID: PMC6024865 DOI: 10.3390/nu10060782] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/14/2018] [Accepted: 06/15/2018] [Indexed: 12/30/2022] Open
Abstract
Whey protein concentrate (WPC) is characterized by powerful antioxidant properties, but its effect on redox homeostasis of salivary glands of aging organisms is still unknown. In this study, we are the first to evaluate the antioxidant barrier of salivary glands of 14-month Wistar rats fed WPC-80. Total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), activities of glutathione peroxidase (GPx), superoxide dismutase (SOD), catalase (CAT) as well as concentrations of reduced glutathione (GSH) are estimated in the submandibular and parotid glands of rats administered WPC-80 intragastrically for a period of 7 and 14 days. We demonstrate a significant increase in GSH, GPx and SOD in the salivary glands of rats fed WPC-80 for 14 days and a significant increase in TAS, GPx and SOD in the parotid glands of rats fed WPC-80 for 7 days compared to control rats. The beneficial effects of WPC-80 on salivary glands are also demonstrated by lower TOS and OSI in the parotid glands of rats fed WPC-80 compared to the submandibular glands. In summary, we demonstrate that WPC-80 improves redox homeostasis in salivary glands, particularly in the parotid glands of old rats.
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Affiliation(s)
- Mateusz Falkowski
- Department of Experimental Pharmacology, Medical University of Bialystok, 37 Szpitalna Street, 15-767 Bialystok, Poland.
- ZOZ Clinic of Dentistry and Medicine, E. and B. Falkowscy CLP., 17B Zarzecze Street, 16-300 Augustów, Poland.
| | - Mateusz Maciejczyk
- Department of Experimental Pharmacology, Medical University of Bialystok, 37 Szpitalna Street, 15-767 Bialystok, Poland.
- Department of Physiology, Medical University of Bialystok, 2c Mickiewicza Street, 15-233 Bialystok, Poland.
| | - Tomasz Koprowicz
- Department of Experimental Pharmacology, Medical University of Bialystok, 37 Szpitalna Street, 15-767 Bialystok, Poland.
- Servier Polska LTD, 10 Jana Kazimierza Street, 01-248 Warszawa, Poland.
| | - Bożena Mikołuć
- Department of Pediatrics, Rheumatology, Immunology and Metabolic Bone Diseases, Medical University of Bialystok, 17 Waszyngtona Street, 15-274 Białystok, Poland.
| | - Anna Milewska
- Department of Statistics and Medical Informatics, Medical University of Bialystok, 37 Szpitalna Street, 15-767 Bialystok, Poland.
| | - Anna Zalewska
- Department of Conservative Dentistry, Medical University of Bialystok, 24a M. Sklodowskiej-Curie Street, 15-274 Bialystok, Poland.
| | - Halina Car
- Department of Experimental Pharmacology, Medical University of Bialystok, 37 Szpitalna Street, 15-767 Bialystok, Poland.
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192
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Sultan CS, Saackel A, Stank A, Fleming T, Fedorova M, Hoffmann R, Wade RC, Hecker M, Wagner AH. Impact of carbonylation on glutathione peroxidase-1 activity in human hyperglycemic endothelial cells. Redox Biol 2018; 16:113-122. [PMID: 29499564 PMCID: PMC5952877 DOI: 10.1016/j.redox.2018.02.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 02/19/2018] [Indexed: 12/14/2022] Open
Abstract
AIMS High levels of glucose and reactive carbonyl intermediates of its degradation pathway such as methylglyoxal (MG) may contribute to diabetic complications partly via increased generation of reactive oxygen species (ROS). This study focused on glutathione peroxidase-1 (GPx1) expression and the impact of carbonylation as an oxidative protein modification on GPx1 abundance and activity in human umbilical vein endothelial cells (HUVEC) under conditions of mild to moderate oxidative stress. RESULTS High extracellular glucose and MG enhanced intracellular ROS formation in HUVECs. Protein carbonylation was only transiently augmented pointing to an effective antioxidant defense in these cells. Nitric oxide synthase expression was decreased under hyperglycemic conditions but increased upon exposure to MG, whereas superoxide dismutase expression was not significantly affected. Increased glutathione peroxidase (GPx) activity seemed to compensate for a decrease in GPx1 protein due to enhanced degradation via the proteasome. Mass spectrometry analysis identified Lys-114 as a possible carbonylation target which provides a vestibule for the substrate H2O2 and thus enhances the enzymatic reaction. INNOVATION Oxidative protein carbonylation has so far been associated with functional inactivation of modified target proteins mainly contributing to aging and age-related diseases. Here, we demonstrate that mild oxidative stress and subsequent carbonylation seem to activate protective cellular redox signaling pathways whereas severe oxidative stress overwhelms the cellular antioxidant defense leading to cell damage. CONCLUSIONS This study may contribute to a better understanding of redox homeostasis and its role in the development of diabetes and related vascular complications.
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Affiliation(s)
- Cheryl S Sultan
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg D-69120, Germany
| | - Andrea Saackel
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg D-69120, Germany
| | - Antonia Stank
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies (HITS), Heidelberg D-69118, Germany; Heidelberg Graduate School of Mathematical and Computational Methods for the Sciences, Heidelberg D-69120, Germany
| | - Thomas Fleming
- Department of Medicine I and Clinical Chemistry, University Hospital Heidelberg, Heidelberg D-69120, Germany
| | - Maria Fedorova
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Center for Biotechnology and Biomedicine, Leipzig University, Leipzig D-04103, Germany
| | - Ralf Hoffmann
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy, Center for Biotechnology and Biomedicine, Leipzig University, Leipzig D-04103, Germany
| | - Rebecca C Wade
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies (HITS), Heidelberg D-69118, Germany; Interdisciplinary Center for Scientific Computing (IWR), Heidelberg D-69120, Germany; Center for Molecular Biology of the University of Heidelberg (ZMBH), DKFZ-ZMBH Alliance, Heidelberg D-69120, Germany
| | - Markus Hecker
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg D-69120, Germany
| | - Andreas H Wagner
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg D-69120, Germany.
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193
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El Ayed M, Kadri S, Mabrouk M, Aouani E, Elkahoui S. Protective effect of grape seed and skin extract against high-fat diet-induced dyshomeostasis of energetic metabolism in rat lung. Lipids Health Dis 2018; 17:109. [PMID: 29747667 PMCID: PMC5944164 DOI: 10.1186/s12944-018-0754-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 04/23/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Obesity is currently one of the major epidemics of this millennium and affects poeples throughout the world. It causes multiple systemic complications as it significantly interferes with respiratory function. OBJECTIVE We aimed in the present work to study the effect of high fat diet (HFD) on lung oxidative stress and energy metabolism alterations, as well as the putative protection afforded by grape seed and skin extract (GSSE). METHODS We started by characterizing the GSSE and its composition using gas chromatography coupled to mass spectrometry (GC-MS). We used a rat model of high-fat-diet and we evaluated the effect of GSSE on oxidative stress and energetic disturbances induced by HFD. We analyzed the effect of HFD on lung oxidative status by assessing lipid oxidation level, non-protein thiols (NPSH) and superoxide anion level… We also evaluated the effect of HFD on creatine kinase (CK), malate dehydrogenase (MDH) and mitochondrial complex IV. RESULTS HFD induced body weight gain, increased lung weight and lipid content without affecting insulinemia and dropped adiponectemia. HFD also provoked on lung oxidative stress characterized by increased carbonylation (+ 95%; p = 0.0045), decreased of NPSH (- 32%; p = 0.0291) and inhibition of antioxidant enzyme activities such as glutathione peroxidase (- 25%; p = 0.0074). HFD also altered lung intracellular mediators as superoxide anion O2¯ (+ 59%; p = 0.0027) and increased lung xanthine oxidase activity (+ 27%; p = 0.0122). HFD induced copper depletion (- 24%; p = 0.0498) and lead (- 51%: p = 0.0490) from the lung. Correlatively HFD decreased the copper associated enzyme tyrosinase (- 29%; p = 0.0500) and decreased glutamine synthetase activity (- 31%; p = 0.0027). HFD altered also lung energy metabolism by increasing CK activity (+ 22%; p = 0.0108) and decreasing MDH and mitochondrial complex IV activities (- 28%; p = 0.0120, - 31%; p = 0.0086 respectively). Importantly all these alterations were efficiently corrected with GSSE treatment. CONCLUSION In conclusion, GSSE has the potential to alleviate the deleterious lipotoxic effect of HFD on lung and it could find potential application in the protection against HFD-induced lung complications.
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Affiliation(s)
- Mohamed El Ayed
- Bioactive Substance Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunis, Tunisia
| | - Safwen Kadri
- Bioactive Substance Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunis, Tunisia.
| | - Maha Mabrouk
- Bioactive Substance Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunis, Tunisia
| | - Ezzedine Aouani
- Bioactive Substance Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunis, Tunisia
| | - Salem Elkahoui
- Bioactive Substance Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050 Hammam-Lif, Tunis, Tunisia
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194
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Hu X, Chandler JD, Orr ML, Hao L, Liu K, Uppal K, Go YM, Jones DP. Selenium Supplementation Alters Hepatic Energy and Fatty Acid Metabolism in Mice. J Nutr 2018; 148:675-684. [PMID: 29982657 PMCID: PMC6454983 DOI: 10.1093/jn/nxy036] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/16/2017] [Accepted: 02/09/2018] [Indexed: 12/11/2022] Open
Abstract
Background Human and animal studies have raised concerns that supplemental selenium can increase the risk of metabolic disorders, but underlying mechanisms are unclear. Objective We used an integrated transcriptome and metabolome analysis of liver to test for functional pathway and network responses to supplemental selenium in mice. Methods Male mice (8-wk-old, C57BL/6J) fed a standard diet (0.41 ppm Se) were given selenium (Na2SeO4, 20 μmol/L) or vehicle (drinking water) for 16 wk. Livers were analyzed for selenium concentration, activity of selenoproteins, reduced glutathione (GSH) redox state, gene expression, and high-resolution metabolomics. Transcriptomic and nontargeted metabolomic data were analyzed with biostatistics, bioinformatics, pathway enrichment analysis, and combined transcriptome-metabolome-wide association study (TMWAS). Results Mice supplemented with selenium had greater body mass gain from baseline to 16 wk (55% ± 5%) compared with controls (40% ± 3%) (P < 0.05); however, no difference was observed in liver selenium content, selenoenzyme transcripts, or enzyme activity. Selenium was higher in the heart, kidney, and urine of mice supplemented with selenium. Gene enrichment analysis showed that supplemental selenium altered pathways of lipid and energy metabolism. Integrated transcriptome and metabolome network analysis showed 2 major gene-metabolite clusters, 1 centered on the transcript for the bidirectional glucose transporter 2 (Glut2) and the other centered on the transcripts for carnitine-palmitoyl transferase 2 (Cpt2) and acetyl-CoA acyltransferase (Acaa1). Pathway analysis showed that highly associated metabolites (P < 0.05) were enriched in fatty acid metabolism and bile acid biosynthesis, including acylcarnitines, triglycerides and glycerophospholipids, long-chain acyl-coenzyme As, phosphatidylcholines, and sterols. TMWAS of body weight gain confirmed changes in the same pathways. Conclusions Supplemental selenium in mice alters hepatic fatty acid and energy metabolism and causes increases in body mass. A lack of effect on hepatic selenium content suggests that signaling involves an extrahepatic mechanism.
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Affiliation(s)
- Xin Hu
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Joshua D Chandler
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Michael L Orr
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Li Hao
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Ken Liu
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Karan Uppal
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Young-Mi Go
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Dean P Jones
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
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195
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Bo X, Mu D, Wu M, Xiao H, Wang H. The morphological changes and molecular biomarker responses in the liver of fluoride-exposed Bufo gargarizans larvae. Ecotoxicol Environ Saf 2018; 151:199-205. [PMID: 29367176 DOI: 10.1016/j.ecoenv.2018.01.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
The goal of the current study was to evaluate the negative influences of fluoride on liver of Bufo gargarizans larvae. B. gargarizans larvae were treated with 42.4mgF-/L for 0, 24, 48 and 72h at Gosner stage 37. The morphological changes and responses of molecular biomarkers involved in lipid metabolism, oxidative stress and apoptosis were examined in liver. Disappearance of cell boundaries, degeneration of hepatic parenchyma cells and significant increase in the number of melanomacrophage centres and the quantity of lipid droplets were found in the liver treated with 42.4mgF-/L for 72h. In addition, in the relative expression of acetyl CoA carboxylase 1 (ACC-1), fatty acid elongase 1 (FAE-1), sterol carrier protein 2 (SCP-2), and carnitine palmitoyltransferase-1 (CPT-1), decrease was observed after 24, 48 and 72h of 42.4mgF-/L exposure. Furthermore, the transcript levels of superoxide dismutase (SOD) and glutathione peroxidase (GPx) were downregulated in tadpoles exposed for 24, 48 and 72h to 42.4mgF-/L, while the transcript level of heat shock protein 90 (HSP90) was upregulated at 42.4mgF-/L for 72h. Also, mRNA expression of Bcl-2-associated transcription factor 1(BCLAF1) and thyroid hormone receptors (TRα and TRβ) was significantly upregulated in tadpoles treated with 42.4mgF-/L for 72h. Therefore, our results suggested that the liver injury induced by fluoride might result from disruption of lipid metabolism, oxidative damage and apoptosis.
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Affiliation(s)
- Xiaoxue Bo
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Danyang Mu
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Minyao Wu
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Hui Xiao
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China.
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196
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Liu C, He X, Wu X, Wang Z, Zuo W, Hu G. Clinicopathological and prognostic significance of GPx2 protein expression in nasopharyngeal carcinoma. Cancer Biomark 2018; 19:335-340. [PMID: 28453466 DOI: 10.3233/cbm-160542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE This study was designed to evaluate the relation between GPx2 (glutathione peroxidase 2) expressions and clinicopathological features as well as prognosis of patients with nasopharyngeal carcinoma (NPC). METHODS A total of 89 cases of NPC were investigated to examine the immunohistochemical expression of GPx2. Fourteen pairs of NPC and the control samples were analyzed respectively by qRT-PCR and Western blot. The correlations of GPx2 expressions with the clinicopathologic features and the prognosis of NPC patients were also analyzed. RESULTS The expression of GPx2 in NPC tissues was elevated immunohistochemically when compared with normal nasopharyngeal tissues (P< 0.05). The mRNA expression of GPx2 in carcinoma tissues was highly elevated compared with the control tissues (P< 0.05). GPx2 protein in carcinoma tissues was also over expressed than in control tissues (P< 0.05). Also GPx2 expression was significantly higher in the late clinical stage (P= 0.02). While there was no significant association between GPx2 expression and patient age, sex, T-stage, N-stage and the metastasis. CONCLUSIONS GPx2 may play an important role in the development of nasopharyngeal carcinoma. Furthermore, GPx2 may serve as a prognostic biomarker for NPC patient.
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197
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Zhang Y, Li L, Yu C, Senyuk V, Li F, Quigley JG, Zhu T, Qian Z. miR-9 upregulation leads to inhibition of erythropoiesis by repressing FoxO3. Sci Rep 2018; 8:6519. [PMID: 29695725 PMCID: PMC5916915 DOI: 10.1038/s41598-018-24628-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 04/04/2018] [Indexed: 12/20/2022] Open
Abstract
MicroRNAs (miRNAs) are emerging as critical regulators of normal and malignant hematopoiesis. In previous studies of acute myeloid leukemia miR-9 overexpression was commonly observed. Here, we show that ectopic expression of miR-9 in vitro and in vivo significantly blocks differentiation of erythroid progenitor cells with an increase in reactive oxygen species (ROS) production. Consistent with this observation, ROS scavenging enzymes, including superoxide dismutase (Sod2), Catalase (Cat), and glutathine peroxidase (Gpx1), are down-regulated by miR-9. In addition, miR-9 suppresses expression of the erythroid transcriptional regulator FoxO3, and its down-stream targets Btg1 and Cited 2 in erythroid progenitor cells, while expression of a constitutively active form of FoxO3 (FoxO3-3A) reverses miR-9-induced suppression of erythroid differentiation, and inhibits miR-9-induced ROS production. Thus, our findings indicate that aberrant expression of miR-9 blocks erythropoiesis by deregulating FoxO3-mediated pathways, which may contribute to the ineffective erythropoiesis observed in patients with hematological malignancies.
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Affiliation(s)
- Yunyuan Zhang
- Department of Clinical laboratory, The Affiliated Hospital of Qingdao University Medical College, Qingdao, 266003, China
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | - Liping Li
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- Fudan University ZhongShan Hospital, Shanghai, China
| | - Chunjie Yu
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | - Vitalyi Senyuk
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | - Fuxing Li
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - John G Quigley
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | - Tongyu Zhu
- Fudan University ZhongShan Hospital, Shanghai, China
| | - Zhijian Qian
- Department of Medicine and Cancer Research Center, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA.
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Matoušková P, Hanousková B, Skálová L. MicroRNAs as Potential Regulators of Glutathione Peroxidases Expression and Their Role in Obesity and Related Pathologies. Int J Mol Sci 2018; 19:ijms19041199. [PMID: 29662007 PMCID: PMC5979329 DOI: 10.3390/ijms19041199] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 12/19/2022] Open
Abstract
Glutathione peroxidases (GPxs) belong to the eight-member family of phylogenetically related enzymes with different cellular localization, but distinct antioxidant function. Several GPxs are important selenoproteins. Dysregulated GPx expression is connected with severe pathologies, including obesity and diabetes. We performed a comprehensive bioinformatic analysis using the programs miRDB, miRanda, TargetScan, and Diana in the search for hypothetical microRNAs targeting 3′untranslated regions (3´UTR) of GPxs. We cross-referenced the literature for possible intersections between our results and available reports on identified microRNAs, with a special focus on the microRNAs related to oxidative stress, obesity, and related pathologies. We identified many microRNAs with an association with oxidative stress and obesity as putative regulators of GPxs. In particular, miR-185-5p was predicted by a larger number of programs to target six GPxs and thus could play the role as their master regulator. This microRNA was altered by selenium deficiency and can play a role as a feedback control of selenoproteins’ expression. Through the bioinformatics analysis we revealed the potential connection of microRNAs, GPxs, obesity, and other redox imbalance related diseases.
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Affiliation(s)
- Petra Matoušková
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
| | - Barbora Hanousková
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
| | - Lenka Skálová
- Faculty of Pharmacy, Department of Biochemical Sciences, Charles University, 500 05, Hradec Králové, Czech Republic.
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Khan AZ, Kumbhar S, Liu Y, Hamid M, Pan C, Nido SA, Parveen F, Huang K. Dietary Supplementation of Selenium-Enriched Probiotics Enhances Meat Quality of Broiler Chickens (Gallus gallus domesticus) Raised Under High Ambient Temperature. Biol Trace Elem Res 2018; 182:328-338. [PMID: 28702872 DOI: 10.1007/s12011-017-1094-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 07/03/2017] [Indexed: 01/16/2023]
Abstract
We investigated the effects of selenium-enriched probiotics (SP) on broiler meat quality under high ambient temperature and explore their underlying mechanisms. A total of 200 1-day-old male broiler chicks (Ross 308) were randomly allotted to four treatment groups, each with five replicates, in groups of ten birds. These birds were fed a corn-soybean basal diet (C), a basal diet plus probiotics supplementation (P), a basal diet plus Se supplementation in the form of sodium selenite (SS, 0.30 mg Se/kg), and a basal diet with the addition of selenium-enriched probiotics (SP, 0.30 mg Se/kg). The experiment lasted for 42 days. The birds were sacrificed by cervical dislocation, and the breast muscles were removed for further process. Our results showed that SP diet significantly increased (p < 0.05) the physical (pH, colors, water holding capacity, drip loss, shear force) and sensory characteristics of breast meat. All P, SS, and SP supplementation enhanced the antioxidant system by increasing (p < 0.05) the Se concentrations, glutathione (GSH) levels, activities of glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) whereas decreasing (p < 0.05) malondialdehyde (MDA) levels, with SP being higher than P and SS. Moreover, SP diet significantly upregulated (p < 0.05) the mRNA levels of glutathione peroxidase genes (GPx1, GPx4) while it downregulated heat stress biomarkers such as heat shock protein (HSP) 70 as compared to C, P, and SS diets. In conclusion, our findings suggest that SP may function as beneficial nutritive supplement that is capable of improving meat quality during the summer season.
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Affiliation(s)
- Alam Zeb Khan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
- Gomal College of Veterinary Sciences, Gomal University, Dera Ismail Khan, 29050, Pakistan
| | - Shahnawaz Kumbhar
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yunhuan Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mohammad Hamid
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Cuiling Pan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Sonia Agostinho Nido
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fahmida Parveen
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China
- Institute of Nutritional and Metabolic Disorders of Domestic Animals and Fowls, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kehe Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 7 Jiangsu Province, 210095, China.
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Tyagi S, Sembi JK, Upadhyay SK. Gene architecture and expression analyses provide insights into the role of glutathione peroxidases (GPXs) in bread wheat (Triticum aestivum L.). J Plant Physiol 2018; 223:19-31. [PMID: 29471272 DOI: 10.1016/j.jplph.2018.02.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 05/05/2023]
Abstract
Glutathione peroxidases (GPXs) are redox sensor proteins that maintain a steady-state of H2O2 in plant cells. They exhibit distinct sub-cellular localization and have diverse functionality in response to different stimuli. In this study, a total of 14 TaGPX genes and three splice variants were identified in the genome of Triticum aestivum and evaluated for various physicochemical properties. The TaGPX genes were scattered on the various chromosomes of the A, B, and D sub-genomes and clustered into five homeologous groups based on high sequence homology. The majority of genes were derived from the B sub-genome and localized on chromosome 2. The intron-exon organization, motif and domain architecture, and phylogenetic analyses revealed the conserved nature of TaGPXs. The occurrence of both development-related and stress-responsive cis-acting elements in the promoter region, the differential expression of these genes during various developmental stages, and the modulation of expression in the presence of biotic and abiotic stresses suggested their diverse role in T. aestivum. The majority of TaGPX genes showed higher expression in various leaf developmental stages. However, TaGPX1-A1 was upregulated in the presence of each abiotic stress treatment. A co-expression analysis revealed the interaction of TaGPXs with numerous development and stress-related genes, which indicated their vital role in numerous biological processes. Our study revealed the opportunities for further characterization of individual TaGPX proteins, which might be useful in designing future crop improvement strategies.
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Affiliation(s)
- Shivi Tyagi
- Department of Botany, Panjab University, Chandigarh,160014, India
| | - Jaspreet K Sembi
- Department of Botany, Panjab University, Chandigarh,160014, India
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