451
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Holen E, Araujo P, Xie S, Søfteland L, Espe M. Resveratrol inhibited LPS induced transcription of immune genes and secretion of eicosanoids in Atlantic salmon (Salmo salar), comparing mono-, co- and a novel triple cell culture model of head kidney leukocytes, liver cells and visceral adipocyte tissue. Comp Biochem Physiol C Toxicol Pharmacol 2019; 224:108560. [PMID: 31279083 DOI: 10.1016/j.cbpc.2019.108560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/17/2019] [Accepted: 06/25/2019] [Indexed: 01/07/2023]
Abstract
The aim was to study the effect of resveratrol on the interplay of inflammatory signals using three different cell models; a metabolic organ (liver), an endocrine organ (visceral adipose tissue, VAT) and an immune organ (head kidney leukocytes, HKL) following lipopolysaccharide challenge (LPS). Atlantic salmon HKL, liver cells and VAT were isolated from the same fish (n = 5). Each cell type was cultured either as mono-cultures, as co-cultures between HKL-liver cells, liver cells-VAT and HKL-VAT. Triple -cultures included all three tissues. In all cultures of HKL, LPS induced transcription of IL-1β, cox2, tnfα, IL-12, ccattβ and Ahr were significantly inhibited by resveratrol (100, 200 μM). Likewise, in all cultures of liver cells, the LPS induced expression of IL-1β was inhibited by resveratrol (100 and 200 μM). HKL, both mono-cultures and triple-cultures and VAT cocultured with liver cells, showed LPS induced cox2 transcription that was inhibited by resveratrol (100 and 200 μM). In contrast, VAT cultured as triple cultures, resveratrol 200 μM particularly, in the presence of LPS, seemed to increase the expression of IL-1β and ccattβ. Resveratrol did not significantly affect lox5 expression in any culture. HKL and VAT are the main producers of PGE2 in response to inflammatory stimuli. VAT showed high endogenous production of eicosanoids, particularly LTB4 and LTB5. Resveratrol inhibited bot LPS induced and endogenous eicosanoid production. Possible targets of resveratrol, Sirt1 and pAMPK were affected differently in the different cells and tissue studied.
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Affiliation(s)
- Elisabeth Holen
- Institute of Marine Research, PB 1870, Nordnes, 5817 Bergen, Norway.
| | - Pedro Araujo
- Institute of Marine Research, PB 1870, Nordnes, 5817 Bergen, Norway
| | - Shiwei Xie
- Institute of Marine Research, PB 1870, Nordnes, 5817 Bergen, Norway; Guangdong Provincial Key Laboratory of Improved Variety Reproduction in Aquatic Economic Animals, Institute of Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Liv Søfteland
- Institute of Marine Research, PB 1870, Nordnes, 5817 Bergen, Norway
| | - Marit Espe
- Institute of Marine Research, PB 1870, Nordnes, 5817 Bergen, Norway
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452
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Saito M, Saito M, Das BC. Involvement of AMP-activated protein kinase in neuroinflammation and neurodegeneration in the adult and developing brain. Int J Dev Neurosci 2019; 77:48-59. [PMID: 30707928 PMCID: PMC6663660 DOI: 10.1016/j.ijdevneu.2019.01.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/29/2018] [Accepted: 01/28/2019] [Indexed: 02/07/2023] Open
Abstract
Microglial activation followed by neuroinflammation is a defense mechanism of the brain to eliminate harmful endogenous and exogenous materials including pathogens and damaged tissues, while excessive or chronic neuroinflammation may cause or exacerbate neurodegeneration observed in brain injuries and neurodegenerative diseases. Depending on conditions/environments during activation, microglia acquire distinct phenotypes, such as pro-inflammatory, anti-inflammatory, and disease-associated phenotypes, and show their ability to phagocytose various objects and produce pro-and anti-inflammatory mediators. Prevention of excessive inflammation by regulating the microglia's pro/anti-inflammatory balance is important for alleviating progression of brain injuries and diseases. Among many factors involved in the regulation of microglial phenotypes, cellular energy status plays an important role. Adenosine monophosphate-activated protein kinase (AMPK), which serves as a master sensor and regulator of energy balance, is considered a candidate molecule. Accumulating evidence from adult rodent studies indicates that AMPK activation promotes anti-inflammatory responses in microglia exposed to danger signals or various stressors mainly through inhibition of the nuclear factor κB (NF-κB) signaling and activation of the nuclear factor erythroid-2-related factor-2 (Nrf2) pathway. However, AMPK activation in neurons exposed to stressors/insults may exacerbate neuronal damage if AMPK activation is excessive or prolonged. While AMPK affects microglial activation states and neuronal cell survival rates in both the adult and the developing brain, studies in the developing brain are still scarce, even though activated AMPK is highly expressed especially in the neonatal brain. More in depth studies in the developing brain are important, because neuroinflammation/neurodegeneration occurred during development can result in long-lasting brain damage.
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Affiliation(s)
- Mariko Saito
- Division of Neurochemistry, Nathan S. Kline Institute for Psychiatric Research 140 Old Orangeburg, Orangeburg, NY 10962, USA
- Department of Psychiatry, New York University Langone Medical Center 550 First Avenue, New York, NY 10016, USA
| | - Mitsuo Saito
- Division of Analytical Psychopharmacology, Nathan S. Kline Institute for Psychiatric Research 140 Old Orangeburg, Orangeburg, NY 10962, USA
| | - Bhaskar C. Das
- Departments of Medicine and Pharmacological Sciences, Icahn School of Medicine at Mount Sinai 1468 Madison Avenue, Annenberg 19-201, New York, NY 10029, USA
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453
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Acute fluoride exposure alters myocardial redox and inflammatory markers in rats. Mol Biol Rep 2019; 46:6155-6164. [DOI: 10.1007/s11033-019-05050-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/28/2019] [Indexed: 01/31/2023]
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454
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Dong YT, Cao K, Tan LC, Wang XL, Qi XL, Xiao Y, Guan ZZ. Stimulation of SIRT1 Attenuates the Level of Oxidative Stress in the Brains of APP/PS1 Double Transgenic Mice and in Primary Neurons Exposed to Oligomers of the Amyloid-β Peptide. J Alzheimers Dis 2019; 63:283-301. [PMID: 29614660 DOI: 10.3233/jad-171020] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In the study, we examined whether the silent information regulator 1 (SIRT1) can attenuate oxidative stress in the brains of mice carrying the APP/PS1 double mutation and/or in primary neonatal rat neurons exposed to oligomers of amyloid-β peptide (AβOs). Starting at 4 or 8 months of age, the transgenic mice were treated with resveratrol (RSV, a stimulator of SIRT1) or suramin (an inhibitor) (each 20 mg/kg BW/day) for two months. The primary neurons were exposed to AβOs (0.5 μM) for 48 h and thereafter RSV (20 μM) or suramin (300 mg/ml) for 24 h. Cell viability was assessed by the CCK-8 assay; SIRT1 protein and mRNA determined by western blotting and real-time PCR, respectively; senile plaques examined immunohistochemically; ROS monitored by flow cytometry; and the contents of OH-, H2O2, O2·-, and MDA, and the activities of SOD and GSH-Px measured by standard biochemical procedures. In comparison to wild-type mice or untreated primary neurons, the expression of SIRT1 was significantly lower in the brains of APP/PS1 mice or neurons exposed to AβOs. In these same systems, increased numbers of senile plaques and a high level of oxidative stress were apparent. Interestingly, these two latter changes were attenuated by treatment with RSV, but enhanced by suramin. These findings indicate that SIRT1 may be neuroprotective.
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Affiliation(s)
- Yang-Ting Dong
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China
| | - Kun Cao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China
| | - Long-Chun Tan
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Medical Molecular Biology, Guiyang, P. R. China
| | - Xiao-Ling Wang
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Medical Molecular Biology, Guiyang, P. R. China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Medical Molecular Biology, Guiyang, P. R. China
| | - Yan Xiao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China
| | - Zhi-Zhong Guan
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Endemic and Ethnic Diseases of the Ministry of Education, Guizhou Medical University, Guiyang, P. R. China.,Key Laboratory of Medical Molecular Biology, Guiyang, P. R. China
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455
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Assmann TS, Milagro FI, Martínez JA. Crosstalk between microRNAs, the putative target genes and the lncRNA network in metabolic diseases. Mol Med Rep 2019; 20:3543-3554. [PMID: 31485667 PMCID: PMC6755190 DOI: 10.3892/mmr.2019.10595] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/18/2019] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs/miRs) are small non-coding RNAs (ncRNAs) that regulate gene expression. Emerging knowledge has suggested that miRNAs have a role in the pathogenesis of metabolic disorders, supporting the hypothesis that miRNAs may represent potential biomarkers or targets for this set of diseases. However, the current evidence is often controversial. Therefore, the aim of the present study was to determine the associations between miRNAs-target genes, miRNA-long ncRNAs (lncRNAs), and miRNAs-small molecules in human metabolic diseases, including obesity, type 2 diabetes and non-alcoholic fatty liver disease. The metabolic disease-related miRNAs were obtained from the Human MicroRNA Disease Database (HMDD) and miR2Disease database. A search on the databases Matrix Decomposition and Heterogeneous Graph Inference (MDHGI) and DisGeNET were also performed. miRNAs target genes were obtained from three independent sources: Microcosm, TargetScan and miRTarBase. The interactions between miRNAs-lncRNA and miRNA-small molecules were performed using the miRNet web tool. The network analyses were performed using Cytoscape software. As a result, a total of 20 miRNAs were revealed to be associated with metabolic disorders in the present study. Notably, 6 miRNAs (miR-17-5p, miR-29c-3p, miR-34a-5p, miR-103a-3p, miR-107 and miR-132-3p) were found in the four resources (HMDD, miR2Disease, MDHGI, and DisGeNET) used for these analyses, presenting a stronger association with the diseases. Furthermore, the target genes of these miRNAs participate in several pathways previously associated with metabolic diseases. In addition, interactions between miRNA-lncRNA and miRNA-small molecules were also found, suggesting that some molecules can modulate gene expression via such an indirect way. Thus, the results of this data mining and integration analysis provide further information on the possible molecular basis of the metabolic disease pathogenesis as well as provide a path to search for potential biomarkers and therapeutic targets concerning metabolic diseases.
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Affiliation(s)
- Taís Silveira Assmann
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain
| | - Fermín I Milagro
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain
| | - José Alfredo Martínez
- Department of Nutrition, Food Science and Physiology, Center for Nutrition Research, University of Navarra, 31008 Pamplona, Spain
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456
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Park JY, Han S, Ka HI, Joo HJ, Soh SJ, Yoo KH, Yang Y. Silent mating-type information regulation 2 homolog 1 overexpression is an important strategy for the survival of adapted suspension tumor cells. Cancer Sci 2019; 110:2773-2782. [PMID: 31348594 PMCID: PMC6726698 DOI: 10.1111/cas.14147] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 07/02/2019] [Accepted: 07/10/2019] [Indexed: 12/16/2022] Open
Abstract
Characterization of circulating tumor cells (CTC) is important to prevent death caused by the metastatic spread of cancer cells because CTC are associated with distal metastasis and poor prognosis of breast cancer. We have previously developed suspension cells (SC) using breast cancer cell lines and demonstrated their high metastatic potential. As survival of CTC is highly variable from a few hours to decades, herein we cultured SC for an extended time and named them adapted suspension cells (ASC). Silent mating‐type information regulation 2 homolog 1 (SIRT1) expression increased in ASC, which protected the cells from apoptosis. High SIRT1 expression was responsible for the suppression of nuclear factor kappa B (NF‐κB) activity and downregulation of reactive oxygen species (ROS) in ASC. As the inhibition of NF‐κB and ROS production in SIRT1‐depleted ASC contributed to the development of resistance to apoptotic cell death, maintenance of a low ROS level and NF‐κB activity in ASC is a crucial function of SIRT1. Thus, SIRT1 overexpression may play an important role in growth adaptation of SC because SIRT1 expression is increased in long‐term rather than in short‐term cultures.
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Affiliation(s)
- Ji Young Park
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Sora Han
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Hye In Ka
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Hyun Jeong Joo
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Su Jung Soh
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Kyung Hyun Yoo
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
| | - Young Yang
- Department of Biological Sciences, Research Center for Cellular Heterogeneity, Research Institute of Women's Health, Sookmyung Women's University, Seoul, Korea
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457
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Yang K, Yin Q, Mao Q, Dai S, Wang L, Dong J, Zuo J. Metabolomics Analysis Reveals Therapeutic Effects of α-Mangostin on Collagen-Induced Arthritis in Rats by Down-regulating Nicotinamide Phosphoribosyltransferase. Inflammation 2019; 42:741-753. [PMID: 30484004 DOI: 10.1007/s10753-018-0932-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
α-Mangostin (MAN) is a bioactive compound isolated from pericarp of mangosteen (Garcinia mangostana Linn.) with significant anti-rheumatic potentials. The purpose of this study was to explore the mechanisms underlying its therapeutic effects on collagen-induced arthritis (CIA) in rats with metabolomics approaches. Therapeutic effects of MAN on CIA were assessed by radiographic, histological, and immunohistochemical methods. Metabolic profiles of rats were characterized based on UPLC-MS/MS analysis of urine samples, followed by verification in HFLS-RA cells using a variety of toxicological and biochemical assays. We found that MAN treatment protected joint structures in CIA rats and caused a decrease of nicotinamide mononucleotide (NMN) in urine. The levels of nicotinamide phosphoribosyltransferase (NAMPT) were reduced in fibroblast-like synoviocytes by MAN both in vivo and in vitro, which was accompanied with a decline in nicotinamide adenine dinucleotide (NAD) production. Secretion of extracellular NAMPT (eNAMPT) in HFLS-RA cells was also decreased upon MAN treatment, which lagged behind the changes of its intracellular counterpart (iNAMPT). Co-treatment with NMN raised the secretion of eNAMPT and restored the decline of p-p65 and TNF-α induced by MAN in vitro. Sirt1 expression was down-regulated under MAN treatments too. These results suggest that MAN treatment suppressed NAD production by inhibiting iNAMPT expression, which in turn decreased eNAMPT secretion and alleviated NF-κB-mediated inflammations in CIA rats.
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Affiliation(s)
- Kui Yang
- Yijishan Hospital of Wannan Medical College, 2 West Zheshan Road, Wuhu, 241000, China
| | - Qin Yin
- The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, China
| | - Qingcheng Mao
- Department of Pharmaceutics, School of Pharmacy, University of Washington, Seattle, WA, 98195, USA
| | - Sheng Dai
- Anhui College of Traditional Chinese Medicine, Wuhu, 241000, China
| | - Lin Wang
- Yijishan Hospital of Wannan Medical College, 2 West Zheshan Road, Wuhu, 241000, China
| | - Jiyang Dong
- Department of Electronic Science, Xiamen University, Xiamen, 361005, China
| | - Jian Zuo
- Yijishan Hospital of Wannan Medical College, 2 West Zheshan Road, Wuhu, 241000, China.
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458
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Sirt1 inhibits gouty arthritis via activating PPARγ. Clin Rheumatol 2019; 38:3235-3242. [DOI: 10.1007/s10067-019-04697-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/25/2019] [Accepted: 07/15/2019] [Indexed: 12/16/2022]
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459
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Audrito V, Managò A, Gaudino F, Sorci L, Messana VG, Raffaelli N, Deaglio S. NAD-Biosynthetic and Consuming Enzymes as Central Players of Metabolic Regulation of Innate and Adaptive Immune Responses in Cancer. Front Immunol 2019; 10:1720. [PMID: 31402913 PMCID: PMC6671870 DOI: 10.3389/fimmu.2019.01720] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/09/2019] [Indexed: 12/15/2022] Open
Abstract
Cancer cells, particularly in solid tumors, are surrounded by non-neoplastic elements, including endothelial and stromal cells, as well as cells of immune origin, which can support tumor growth by providing the right conditions. On the other hand, local hypoxia, and lack of nutrients induce tumor cells to reprogram their metabolism in order to survive, proliferate, and disseminate: the same conditions are also responsible for building a tumor-suppressive microenvironment. In addition to tumor cells, it is now well-recognized that metabolic rewiring occurs in all cellular components of the tumor microenvironment, affecting epigenetic regulation of gene expression and influencing differentiation/proliferation decisions of these cells. Nicotinamide adenine dinucleotide (NAD) is an essential co-factor for energy transduction in metabolic processes. It is also a key component of signaling pathways, through the regulation of NAD-consuming enzymes, including sirtuins and PARPs, which can affect DNA plasticity and accessibility. In addition, both NAD-biosynthetic and NAD-consuming enzymes can be present in the extracellular environment, adding a new layer of complexity to the system. In this review we will discuss the role of the “NADome” in the metabolic cross-talk between cancer and infiltrating immune cells, contributing to cancer growth and immune evasion, with an eye to therapeutic implications.
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Affiliation(s)
- Valentina Audrito
- Department of Medical Sciences, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Turin, Italy
| | - Antonella Managò
- Department of Medical Sciences, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Turin, Italy
| | - Federica Gaudino
- Department of Medical Sciences, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Turin, Italy
| | - Leonardo Sorci
- Division of Bioinformatics and Biochemistry, Department of Materials, Environmental Sciences and Urban Planning, Polytechnic University of Marche, Ancona, Italy
| | - Vincenzo Gianluca Messana
- Department of Medical Sciences, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Turin, Italy
| | - Nadia Raffaelli
- Department of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Silvia Deaglio
- Department of Medical Sciences, University of Turin, Turin, Italy.,Italian Institute for Genomic Medicine, Turin, Italy
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460
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Jung TW, Ahn SH, Shin JW, Kim HC, Park ES, Abd El-Aty AM, Hacımüftüoğlu A, Song KH, Jeong JH. Protectin DX ameliorates palmitate-induced hepatic insulin resistance through AMPK/SIRT1-mediated modulation of fetuin-A and SeP expression. Clin Exp Pharmacol Physiol 2019; 46:898-909. [PMID: 31246318 DOI: 10.1111/1440-1681.13131] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/08/2019] [Accepted: 06/21/2019] [Indexed: 12/15/2022]
Abstract
The role as well as the molecular mechanisms of protectin DX (PDX) in the prevention of hepatic insulin resistance, a hallmark of type 2 diabetes, remains unknown. Therefore, the present study was designed to explore the direct impact of PDX on insulin resistance and to investigate the expression of fetuin-A and selenoprotein P (SeP), hepatokines that are involved in insulin signalling, in hepatocytes. Human serum levels of PDX as well as fetuin-A and SeP were determined by high-performance liquid chromatography (HPLC). Human primary hepatocytes were treated with palmitate and PDX. NF-κB phosphorylation as well as expression of insulin signalling associated genes and hepatokines were determined by Western blotting analysis. FOXO1 binding levels were measured by quantitative real-time PCR. Selected genes from candidate pathways were evaluated by small interfering (si) RNA-mediated gene suppression. Serum PDX levels were significantly (P < 0.05) downregulated, whereas serum fetuin-A and SeP levels were increased (P < 0.05) in obese subjects compared with healthy subjects. In in vitro experiments, PDX treatment increased AMP-activated protein kinase (AMPK) phosphorylation and SIRT1 expression and attenuated palmitate-induced fetuin-A and SeP expression and insulin resistance in hepatocytes. AMPK or SIRT1 siRNA mitigated the suppressive effects of PDX on palmitate-induced fetuin-A through NF-κB and SeP expression linked to FOXO1 and insulin resistance. Recombinant fetuin-A and SeP reversed the suppressive effects of fetuin-A and SeP expression on palmitate-mediated impairment of insulin signalling. The current finding provides novel insight into the underlying mechanism linking hepatokines to the pathogenesis of hepatic insulin resistance.
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Affiliation(s)
- Tae Woo Jung
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Sung Ho Ahn
- Department of Pathology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jong Wook Shin
- Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Hyoung-Chun Kim
- Neuropsychopharmacology and Toxicology Program, College of Pharmacy, Kangwon National University, Chunchon, Korea
| | - Eon Sub Park
- Department of Pathology, College of Medicine, Chung-Ang University, Seoul, Korea
| | - A M Abd El-Aty
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.,Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Ahmet Hacımüftüoğlu
- Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey
| | - Ki Hak Song
- Department of Urology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Korea
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461
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NLRP3 Inflammasome Modulation by Melatonin Supplementation in Chronic Pristane-Induced Lupus Nephritis. Int J Mol Sci 2019; 20:ijms20143466. [PMID: 31311094 PMCID: PMC6678949 DOI: 10.3390/ijms20143466] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/02/2019] [Accepted: 07/10/2019] [Indexed: 02/06/2023] Open
Abstract
Lupus nephritis (LN) is a kidney inflammatory disease caused by systemic lupus erythematosus (SLE). NLRP3 inflammasome activation is implicated in LN pathogenesis, suggesting its potential targets for LN treatment. Melatonin, an endogenous indoleamine, is considered an important multitasking molecule that has been reported to have anti-inflammatory effects by inhibiting nuclear factor-kappa B (NF-κB)-mediated inflammatory responses in vivo. This molecule has also protective effects against the activation of the inflammasomes and, in particular, the NLRP3 inflammasome. Thus, this work evaluated the effect of melatonin on morphological alteration and NLRP3 inflammasome activation in LN pristane mouse models. To evaluate the melatonin effects in these mice, we studied the renal cytoarchitecture by means of morphological analyses and immunohistochemical expression of specific markers related to oxidative stress, inflammation and inflammasome activation. Our results showed that melatonin attenuates pristane-induced LN through restoring of morphology and attenuation of oxidative stress and inflammation through a pathway that inhibited activation of NLRP3 inflammasome signaling. Our data clearly demonstrate that melatonin has protective activity on lupus nephritis in these mice that is highly associated with its effect on enhancing the Nrf2 antioxidant signaling pathway and decreasing renal NLRP3 inflammasome activation.
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462
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Lee H, Lim Y. Gamma-tocopherol ameliorates hyperglycemia-induced hepatic inflammation associated with NLRP3 inflammasome in alloxan-induced diabetic mice. Nutr Res Pract 2019; 13:377-383. [PMID: 31583056 PMCID: PMC6760984 DOI: 10.4162/nrp.2019.13.5.377] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/27/2019] [Accepted: 05/28/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND/OBJECTIVES Hyperglycemia-induced hepatic damage has been recognized as one of the major cause of complications in diabetes. Hepatic complications are associated with inflammation and oxidative stress in diabetes. In this study, we investigated the hypothesis that gamma-tocopherol (GT) supplementation ameliorates NLRP3 inflammasome associated hepatic inflammation in diabetes. MATERIALS/METHODS Diabetes was induced by the intraperitoneal injection of alloxan (150 mg/kg. BW) in ICR mice. All mice were fed with a control diet (AIN-76A). After diabetes was induced (fasting glucose level ≥ 250 mg/dL), the mice were treated with tocopherol-stripped corn oil or GT-supplemented (35 mg/kg) corn oil, respectively, by gavage for 2 weeks. RESULTS GT supplementation reduced fasting blood glucose levels in diabetic mice relative to non-treated diabetic mice. Moreover, GT supplementation ameliorated hyperglycemia-induced hepatic damage by regulation of NOD-like receptor protein 3 (NLRP3)-inflammasome associated inflammation represented by NLRP3, apoptosis-associated speck-like protein containing a caspase-recruitment domain, caspase-1, nuclear factor-κB pathway as well as oxidative stress demonstrated by nuclear factor erythroid 2-related factor 2, NAD(P)H dehydrogenase quinone 1, catalase and glutathione-dependent peroxidase in diabetic mice. CONCLUSION The findings suggested that GT supplementation ameliorated hepatic damage by attenuating inflammation and oxidative stress in alloxan-induced diabetic mice. Taken together, GT could be a beneficial nutrient that can ameliorate inflammatory responses associated with NLRP3 inflammasome in hyperglycemia-induced hepatic damage.
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Affiliation(s)
- Heaji Lee
- Department of Food and Nutrition, Kyung Hee University, 26 Kyunghee-Daero, Dongdaemun-Gu, Seoul 02447, Republic of Korea
| | - Yunsook Lim
- Department of Food and Nutrition, Kyung Hee University, 26 Kyunghee-Daero, Dongdaemun-Gu, Seoul 02447, Republic of Korea
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463
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Jayawardena TU, Fernando IPS, Lee WW, Sanjeewa KKA, Kim HS, Lee DS, Jeon YJ. Isolation and purification of fucoidan fraction in Turbinaria ornata from the Maldives; Inflammation inhibitory potential under LPS stimulated conditions in in-vitro and in-vivo models. Int J Biol Macromol 2019; 131:614-623. [PMID: 30898597 DOI: 10.1016/j.ijbiomac.2019.03.105] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/01/2019] [Accepted: 03/17/2019] [Indexed: 12/22/2022]
Abstract
Fucoidan, referred to as fucose containing sulfated polysaccharides (FCSP), is a polymer from brown algae cell wall that is reported to exhibit potential anti-inflammatory activity. In the present study, the fucoidans are extracted from Turbinaria ornata (TO) from the Maldives. The method involves enzyme assisted extraction and is modified in order to improve the effectiveness and purity of final product. Purified fucoidan fraction was identified as F10, and its chemical properties were verified via FTIR, 1H NMR and monosaccharide analysis. Selected inflammatory mediators were studied to evaluate the anti-inflammatory potential using RAW 264.7 macrophages. F10 successfully inhibited NO production (IC50 = 30.83 ± 1.02 μg mL-1). F10 dose-dependently down-regulated iNOS, COX-2, and pro-inflammatory cytokines including PGE2 levels. The in vivo experiments were assisted by zebrafish embryo model. This exhibited reduction in ROS, NO expression levels. To our knowledge, this is the first report to illustrate potential anti-inflammatory activity of FCSPs' extracted from the brown algae T. ornata. Concisely, the results suggest that fucoidan purified from T. ornata increases the macrophage cellular and zebrafish embryo resistance against LPS-induced inflammation. Based on the observations, the fucoidans are promising candidates to be used in the pharmaceutical and cosmeceutical sectors.
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Affiliation(s)
- Thilina U Jayawardena
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | | | - Won Woo Lee
- Freshwater Bioresources Utilization Division, Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - K K Asanka Sanjeewa
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Hyun-Soo Kim
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea
| | - Dae-Sung Lee
- Department of Applied Research, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea.
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 690-756, Republic of Korea.
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464
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Wang X, Buechler NL, Long DL, Furdui CM, Yoza BK, McCall CE, Vachharajani V. Cysteine thiol oxidation on SIRT2 regulates inflammation in obese mice with sepsis. Inflammation 2019; 42:156-169. [PMID: 30203196 DOI: 10.1007/s10753-018-0881-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Obesity increases morbidity and mortality in acute illnesses such as sepsis and septic shock. We showed previously that the early/hyper-inflammatory phase of sepsis is exaggerated in obese mice with sepsis; sirtuin 2 (SIRT2) modulates sepsis inflammation in obesity. Evidence suggests that obesity with sepsis is associated with increased oxidative stress. It is unknown whether exaggerated hyper-inflammation of obesity with sepsis modulates the SIRT2 function in return. We showed recently that SIRT6 oxidation during hyper-inflammation of sepsis modulates its glycolytic function. This study tested the hypothesis that increased oxidative stress and direct SIRT2 oxidation exaggerate hyper-inflammation in obesity with sepsis. Using spleen and liver tissue from mice with diet-induced obesity (DIO) we studied oxidized vs. total SIRT2 expression during hyper- and hypo-inflammation of sepsis. To elucidate the mechanism of SIRT2 oxidation (specific modifications of redox-sensitive cysteines) and its effect on inflammation, we performed site-directed mutations of redox-sensitive cysteines Cys221 and Cys224 on SIRT2 to serine (C221S and C224S), transfected HEK293 cells with mutants or WT SIRT2, and studied SIRT2 enzymatic activity and NFĸBp65 deacetylation. Finally, we studied the effect of SIRT2 mutation on LPS-induced inflammation using RAW 264.7 macrophages. In an inverse relationship, total SIRT2 decreased while oxidized SIRT2 expression increased during hyper-inflammation and SIRT2 was unable to deacetylate NFĸBp65 with increased oxidative stress of obesity with sepsis. Mechanistically, both the mutants (C221S and C224S) show decreased (1) SIRT2 enzymatic activity, (2) deacetylation of NFĸBp65, and (3) anti-inflammatory activity in response to LPS vs. WT SIRT2. Direct oxidation modulates SIRT2 function during hyper-inflammatory phase of obesity with sepsis via redox sensitive cysteines.
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Affiliation(s)
- Xianfeng Wang
- Department of Anesthesiology, Section on Critical Care, Department of Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA
| | - Nancy L Buechler
- Department of Anesthesiology, Section on Critical Care, Department of Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.,Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - David L Long
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Cristina M Furdui
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Barbara K Yoza
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.,Department of Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Charles E McCall
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Vidula Vachharajani
- Department of Anesthesiology, Section on Critical Care, Department of Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA. .,Department of Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, 27157, USA.
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465
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Fahey JM, Korytowski W, Girotti AW. Upstream signaling events leading to elevated production of pro-survival nitric oxide in photodynamically-challenged glioblastoma cells. Free Radic Biol Med 2019; 137:37-45. [PMID: 30991141 PMCID: PMC6526063 DOI: 10.1016/j.freeradbiomed.2019.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 03/15/2019] [Accepted: 04/10/2019] [Indexed: 12/19/2022]
Abstract
Nitric oxide (NO) generated endogenously by inducible nitric oxide synthase (iNOS) promotes growth and migration/invasion of glioblastoma cells and also fosters resistance to chemotherapy and ionizing radiotherapy. Our recent studies revealed that glioblastoma cell iNOS/NO also opposes the cytotoxic effects of non-ionizing photodynamic therapy (PDT), and moreover stimulates growth/migration aggressiveness of surviving cells. These negative responses, which depended on PI3K/Akt/NF-κB activation, were strongly suppressed by blocking iNOS transcription with JQ1, a BET bromodomain inhibitor. In the present study, we sought to identify additional molecular events that precede iNOS transcriptional upregulation. Akt activation, iNOS induction, and viability loss in PDT-challenged glioblastoma U87 cells were all strongly inhibited by added l-histidine, consistent with primary involvement of photogenerated singlet oxygen (1O2). Transacetylase p300 not only underwent greater Akt-dependent activation after PDT, but greater interaction with NF-κB subunit p65, which in turn exhibited greater K310 acetylation. In addition, PDT promoted intramolecular disulfide formation and inactivation of tumor suppressor PTEN, thereby favoring Akt and p300 activation leading to iNOS upregulation. Importantly, deacetylase Sirt1 was down-regulated by PDT stress, consistent with the observed increase in p65-acK310 level, which fostered iNOS transcription. This study provides new mechanistic insights into how glioblastoma tumors can exploit iNOS/NO to not only resist PDT, but to attain a more aggressive survival phenotype.
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Affiliation(s)
- Jonathan M Fahey
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, 53226-3548, USA
| | | | - Albert W Girotti
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, 53226-3548, USA.
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466
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Li T, Chen X, Huang Z, Xie W, Tong C, Bao R, Sun X, Li W, Li S. Pectin oligosaccharide from hawthorn fruit ameliorates hepatic inflammation via NF-κB inactivation in high-fat diet fed mice. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.04.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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467
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Lin X, Liu C, Wang T, Wang H, Shao Z. Sirt1 in the Regulation of Interferon Gamma in Severe Aplastic Anemia. Acta Haematol 2019; 142:142-148. [PMID: 31141802 DOI: 10.1159/000497404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/26/2019] [Indexed: 12/22/2022]
Abstract
Recent studies have indicated that Sirt1 plays critical roles in the suppression of inflammation, T cell activation, and differentiation of hematopoietic progenitor cells. Severe aplastic anemia (SAA) is an immune-mediated disease that is characterized by elevated cytotoxic lymphocytes and type 1 cytokines. As a negative effector cytokine, interferon gamma (IFNγ) takes part in aplastic anemia through its inhibitory effect on hematopoiesis. In this study, we investigated the role of Sirt1 in the regulation of IFNγ in patients with SAA. A significant decrease in relative SIRT1 (p< 0.05) and increase in IFNG (p< 0.05) expression levels was observed in the sorted CD8+T cells of SAA patients compared to the controls. There was a significant negative correlation (r = -0.53, p < 0.05) between SIRT1 and IFNG expression in SAA patients. SRT3025, a Sirt1 activator, was shown to significantly reduce IFNγ (p < 0.01) and elevate Sirt1 (p < 0.05) expression in the CD8+T cells of SAA patients, and also showed a therapeutic role in an aplastic anemia mouse model. In conclusion, the defective Sirt1 may be correlated to the abnormal IFNγ expression in SAA patients, and activation of Sirt1 signaling may help improve the inflammatory status of SAA.
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Affiliation(s)
- Xiaoyun Lin
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Chunyan Liu
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Ting Wang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Huaquan Wang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Zonghong Shao
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin, China,
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468
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Jian M, Kwan JSC, Bunting M, Ng RCL, Chan KH. Adiponectin suppresses amyloid-β oligomer (AβO)-induced inflammatory response of microglia via AdipoR1-AMPK-NF-κB signaling pathway. J Neuroinflammation 2019; 16:110. [PMID: 31128596 PMCID: PMC6535190 DOI: 10.1186/s12974-019-1492-6] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 04/30/2019] [Indexed: 01/07/2023] Open
Abstract
Background Microglia-mediated neuroinflammation is important in Alzheimer’s disease (AD) pathogenesis. Extracellular deposition of β-amyloid (Aβ), a major pathological hallmark of AD, can induce microglia activation. Adiponectin (APN), an adipocyte-derived adipokine, exerts anti-inflammatory effects in the periphery and brain. Chronic APN deficiency leads to cognitive impairment and AD-like pathologies in aged mice. Here, we aim to study the role of APN in regulating microglia-mediated neuroinflammation in AD. Methods Inflammatory response of cultured microglia (BV2 cells) to AβO and effects of APN were studied by measuring levels of proinflammatory cytokines (tumor necrosis factor α [TNFα] and interleukin-1β [IL-1β]) in cultured medium before and after exposure to AβO, with and without APN pretreatment. Adiponectin receptor 1 (AdipoR1) and receptor 2 (AdipoR2) were targeted by small interference RNA. To study the neuroprotective effect of APN, cultured HT-22 hippocampal cells were treated with conditioned medium of AβO-exposed BV2 cells or were co-cultured with BV2 cells in transwells. The cytotoxicity of HT-22 hippocampal cells was assessed by MTT reduction. We generated APN-deficient AD mice (APN−/−5xFAD) by crossing APN-knockout mice with 5xFAD mice to determine the effects of APN deficiency on microglia-mediated neuroinflammation in AD. Results AdipoR1 and AdipoR2 were expressed in BV2 cells and microglia of mice. Pretreatment with APN for 2 h suppressed TNFα and IL-1β release induced by AβO in BV2 cells. Additionally, APN rescued the decrease of AMPK phosphorylation and suppressed nuclear translocation of nuclear factor kappa B (NF-κB) induced by AβO. Compound C, an inhibitor of AMPK, abolished these effects of APN. Knockdown of AdipoR1, but not AdipoR2 in BV2 cells, inhibited the ability of APN to suppress proinflammatory cytokine release induced by AβO. Moreover, pretreatment with APN inhibited the cytotoxicity of HT-22 cells co-cultured with AβO-exposed BV2 cells. Lastly, APN deficiency exacerbated microglia activation in 9-month-old APN−/−5xFAD mice associated with upregulation of TNFα and IL-1β in the cortex and hippocampus. Conclusions Our findings demonstrate that APN inhibits inflammatory response of microglia to AβO via AdipoR1-AMPK-NF-κB signaling, and APN deficiency aggravates microglia activation and neuroinflammation in AD mice. APN may be a novel therapeutic agent for inhibiting neuroinflammation in AD. Electronic supplementary material The online version of this article (10.1186/s12974-019-1492-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Min Jian
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 8/F, 21 Sassoon Road, Pokfulam, Hong Kong, Special Administrative Region of China
| | - Jason Shing-Cheong Kwan
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 8/F, 21 Sassoon Road, Pokfulam, Hong Kong, Special Administrative Region of China.,Neuroimmunology and Neuroinflammation Research Laboratory, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region of China
| | - Myriam Bunting
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 8/F, 21 Sassoon Road, Pokfulam, Hong Kong, Special Administrative Region of China
| | - Roy Chun-Laam Ng
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 8/F, 21 Sassoon Road, Pokfulam, Hong Kong, Special Administrative Region of China. .,Neuroimmunology and Neuroinflammation Research Laboratory, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region of China.
| | - Koon Ho Chan
- Department of Medicine, LKS Faculty of Medicine, The University of Hong Kong, 8/F, 21 Sassoon Road, Pokfulam, Hong Kong, Special Administrative Region of China. .,Neuroimmunology and Neuroinflammation Research Laboratory, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region of China. .,Research Center of Heart, Brain, Hormone and Healthy Aging, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region of China. .,Hong Kong University Alzheimer's Disease Research Network, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region of China. .,Department of Medicine, The University of Hong Kong, 4/F, Professorial Block, Queen Mary Hospital, 102 Pokfulam Road, Pokfulam, Hong Kong, Special Administrative Region of China.
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469
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Han S, Li Z, Ji P, Jia Y, Bai X, Cai W, Li X, Yang C, Yang Y, Yang K, Wu G, Zhang W, Hu D. MCPIP1 alleviated lipopolysaccharide‐induced liver injury by regulating SIRT1 via modulation of microRNA‐9. J Cell Physiol 2019; 234:22450-22462. [PMID: 31099043 DOI: 10.1002/jcp.28809] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/22/2019] [Accepted: 04/24/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Shichao Han
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Zhenzhen Li
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Peng Ji
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Xiaozhi Bai
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Weixia Cai
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Xiaoqiang Li
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Chen Yang
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Yunshu Yang
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Kuan Yang
- Department of Plastic Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Wanfu Zhang
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery Xijing Hospital, Air Force Medical University Xi'an Shaanxi China
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470
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Baker JR. Sirtuin 1: A New Potential Therapeutic Target for Rhinosinusitis? Who "Nose"? Am J Respir Cell Mol Biol 2019; 59:412-414. [PMID: 29995434 DOI: 10.1165/rcmb.2018-0187ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jonathan R Baker
- 1 Airway Disease Section Imperial College London London, United Kingdom
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471
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Flores-León M, Pérez-Domínguez M, González-Barrios R, Arias C. Palmitic Acid-Induced NAD + Depletion is Associated with the Reduced Function of SIRT1 and Increased Expression of BACE1 in Hippocampal Neurons. Neurochem Res 2019; 44:1745-1754. [PMID: 31073968 DOI: 10.1007/s11064-019-02810-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/29/2019] [Accepted: 05/02/2019] [Indexed: 12/15/2022]
Abstract
Increased levels of circulating fatty acids, such as palmitic acid (PA), are associated with the development of obesity, insulin resistance, type-2 diabetes and metabolic syndrome. Furthermore, these diseases are linked to an increased risk of cancer, cardiovascular diseases, mild cognitive impairment and even Alzheimer's disease (AD). However, the precise actions of elevated PA levels on neurons and their association with neuronal metabolic disruption that leads to the expression of pathological markers of AD, such as the overproduction and accumulation of the amyloid-β peptide, represent an area of intense investigation. A possible molecular mechanism involved in the effects of PA may be through dysfunction of the NAD+ sensor enzyme, SIRT1. Therefore, the aim of the present study was to analyze the relationship between the effects of PA metabolism on the function of SIRT1 and the upregulation of BACE1 in cultured hippocampal neurons. PA reduced the total amount of NAD+ in neurons that caused an increase in p65 K310 acetylation due to inhibition of SIRT1 activity and low protein content. Furthermore, BACE1 protein and its activity were increased, and BACE1 was relocated in neurites after PA exposure.
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Affiliation(s)
- Manuel Flores-León
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70-228, 04510, México, DF, Mexico
| | - Martha Pérez-Domínguez
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70-228, 04510, México, DF, Mexico
| | - Rodrigo González-Barrios
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología (INCan)-Instituto de Investigaciones Biomédicas (IIB), Universidad Nacional Autónoma de México (UNAM), 14080, México, DF, Mexico
| | - Clorinda Arias
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, AP 70-228, 04510, México, DF, Mexico.
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472
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Han S, Li Z, Han F, Jia Y, Qi L, Wu G, Cai W, Xu Y, Li C, Zhang W, Hu D. ROR alpha protects against LPS-induced inflammation by down-regulating SIRT1/NF-kappa B pathway. Arch Biochem Biophys 2019; 668:1-8. [PMID: 31071300 DOI: 10.1016/j.abb.2019.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 04/15/2019] [Accepted: 05/05/2019] [Indexed: 02/07/2023]
Abstract
Systemic inflammatory response syndrome (SIRS) is associated with excessive inflammatory response, however, the pathophysiology of inflammation is poorly understood. The retinoid-related orphan receptor α (RORα) is a key inflammatory regulator, but the mechanisms underlying its role remain unclear. The aim of this study was to investigate how RORα was involved in the regulation of inflammatory response. Here we put forward a hypothesis that RORα might negatively regulate inflammatory response by controlling silent information regulator Sirtuin 1 (SIRT1) expression. Stimulation of macrophages in vitro with LPS and LPS administration in vivo were used to explore the function of RORα and the relationship between RORα and SIRT1. We found that the level of RORα was suppressed in macrophages stimulated with LPS and overexpression or knockdown of RORα by transfection with lentivirus or siRNAs significantly decreased or increased, respectively, the pro-inflammatory cytokines IL-1β, TNF, IL-6 and MCP-1. Importantly, overexpression of RORα suppressed inflammation and alleviated LPS-induced organ injury in vivo. Further study showed that RORα could regulate SIRT1 expression and, consequently, affect deacetyation and nuclear translocation of nuclear factor-kappa B (NF-κB) subunit p65. Moreover, the activation of SIRT1 by its specific agonist, SR1720, could reduce the expression of proinflammatory cytokines in RORα knockdown macrophages stimulated with LPS. In conclusion, we demonstrated that RORα could alleviate LPS-induced inflammation and organ injury both in vivo and in vitro by blocking NF-κB p65 nuclear translocation and restricting acetylation of NF-κB p65 at lysine 310 via the regulation of SIRT1 expression. Targeting RORα might be a promising therapeutic strategy to regulate inflammatory disorders.
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Affiliation(s)
- Shichao Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Zhenzhen Li
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Fu Han
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yanhui Jia
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Lijun Qi
- Department of Anesthesiology, Heze Municipal Hospital, Heze, 274031, Shandong, China
| | - Gaofeng Wu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Weixia Cai
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Yongqiang Xu
- Department of Radiology, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China
| | - Cong Li
- Department of Anesthesiology, Heze Municipal Hospital, Heze, 274031, Shandong, China
| | - Wanfu Zhang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China.
| | - Dahai Hu
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, No.169 Changle West Road, Xi'an, 710032, Shaanxi, China.
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473
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Xie Z, Wang Y, Huang J, Qian N, Shen G, Chen L. Anti-inflammatory activity of polysaccharides from Phellinus linteus by regulating the NF-κB translocation in LPS-stimulated RAW264.7 macrophages. Int J Biol Macromol 2019; 129:61-67. [DOI: 10.1016/j.ijbiomac.2019.02.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 11/28/2022]
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474
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Sanajou D, Nazari Soltan Ahmad S, Hosseini V, Kalantary-Charvadeh A, Marandi Y, Roshangar L, Bahrambeigi S, Mesgari-Abbasi M. β-Lapachone protects against doxorubicin-induced nephrotoxicity via NAD +/AMPK/NF-kB in mice. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2019; 392:633-640. [PMID: 30671613 DOI: 10.1007/s00210-019-01619-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 01/15/2019] [Indexed: 01/02/2023]
Abstract
β-Lapachone (B-LAP) is a natural naphtaquinone with established anti-oxidative stress and anti-cancer activities. We aimed to investigate B-LAP protective potential against doxorubicin (DOX)-induced nephrotoxicity in mice. The mice received an oral dose of B-LAP followed by a single intraperitoneal injection of 20 mg/kg DOX a day later. They were then treated for 4 days with 1.25 mg/kg, 2.5 mg/kg, and 5 mg/kg doses of B-LAP. Renal levels of NAD+/NADH ratios, p-AMPKα, p-NF-κB p65, inducible nitric oxide synthase (iNOS), tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6) along with renal expressions of TNF-α, IL-1β, and IL-6 were examined. Serum levels of kidney function markers as well as renal histopathology were also investigated. In addition to increasing the activities of p-AMPKα, B-LAP elevated NAD+/NADH ratios in the kidneys and decreased the renal levels of nuclear p-NF-κB and its correspondent downstream effectors TNF-α, IL-1β, IL-6, and iNOS in the kidneys. Also, B-LAP effectively ameliorated renal architectural changes and attenuated serum levels of urea, creatinine, and cystatin C. Collectively, these findings suggest the protective actions of B-LAP against DOX-induced nephrotoxicity in mice.
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Affiliation(s)
- Davoud Sanajou
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Nazari Soltan Ahmad
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Vahid Hosseini
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Yasser Marandi
- Department of Biochemistry, Faculty of Medicine, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Leila Roshangar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saman Bahrambeigi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Tabriz, Iran
| | - Mehran Mesgari-Abbasi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Golgasht Avenue, Tabriz, Iran.
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475
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Lee SJ, Baek SE, Jang MA, Kim CD. SIRT1 inhibits monocyte adhesion to the vascular endothelium by suppressing Mac-1 expression on monocytes. Exp Mol Med 2019; 51:1-12. [PMID: 31023999 PMCID: PMC6483987 DOI: 10.1038/s12276-019-0239-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 12/25/2018] [Accepted: 12/28/2018] [Indexed: 01/16/2023] Open
Abstract
SIRT1 signaling pathways modulate vascular inflammation; however, the precise role of SIRT1 in monocyte adhesion to the vascular endothelium, a key event initiating vascular inflammation, is unclear. Thus, this study investigated the roles and molecular interaction of SIRT1 and TLR2 in regulating monocyte adhesion to the vascular endothelium. In vitro, both Mac-1 expression and the endothelial adhesion of THP-1 cells stimulated with Pam3CSK4, a TLR2 ligand, were markedly increased in association with a decreased expression of SIRT1. In THP-1 cells stimulated with Pam3CSK4, the promoter activity and expression of SIRT1 were decreased. The TLR2-dependent suppression of SIRT1 expression in THP-1 cells was mediated by the transcription factors NF-κB and CREB, suggesting that the TLR2-mediated NF-κB and CREB signaling downregulated SIRT1 expression in monocytes. In peripheral blood monocytes (PBMCs) isolated from SIRT1 transgenic (TG) mice and THP-1 cells treated with recombinant SIRT1, both the increased Mac-1 expression and endothelial adhesion induced by Pam3CSK4 were significantly attenuated. In addition, the en face immunohistochemical study showed a marked increase in monocyte adhesion to the aortic endothelium of WT mice treated with Pam3CSK4, which was significantly attenuated in Pam3CSK4-treated SIRT1 TG mice. Moreover, a greater number of atherosclerotic plaques formed in WT mice fed a high-fat diet than in SIRT1 TG mice, indicating a pivotal role for SIRT1 in preventing vascular inflammation. Based on these results, SIRT1 might be a potential target for researchers aiming to develop therapeutic interventions for vascular inflammation, including atherosclerosis.
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Affiliation(s)
- Seung Jin Lee
- College of Pharmacy, Pusan National University, Busan, 46241, Republic of Korea
| | - Seung Eun Baek
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, 50612, Republic of Korea
| | - Min A Jang
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, 50612, Republic of Korea
| | - Chi Dae Kim
- Department of Pharmacology, School of Medicine and Gene & Cell Therapy Research Center for Vessel-associated Diseases, Pusan National University, Gyeongnam, 50612, Republic of Korea.
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476
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Activation of liver x receptors prevents the spinal LTP induced by skin/muscle retraction in the thigh via SIRT1/NF-Κb pathway. Neurochem Int 2019; 128:106-114. [PMID: 31018150 DOI: 10.1016/j.neuint.2019.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/03/2019] [Accepted: 04/05/2019] [Indexed: 01/31/2023]
Abstract
It has been reported that skin/muscle incision and retraction (SMIR) in the thigh, produces mechanical allodynia in the hind paw, far from the site of incision/retraction. The mechanical allodynia lasts about 22 days, indicating chronic post-operative pain develops. The precise mechanisms, however, are largely unclear. In the current study, we further found that SMIR surgery induced LTP of c-fiber evoked field potentials that lasted at least 4 h. The mRNA and protein level of tumor necrosis factor-alpha (TNFα) and acetylated nuclear factor-kappaB p65 (ac-NF-κB p65) in the lumbar spinal dorsal horn was gradually increased during LTP development, while pretreatment with either TNFα neutralization antibody or NF-κB inhibitor PDTC completely prevented the induction of LTP. Moreover, the expression of Silent information regulator 1 (SIRT1) in the lumbar spinal dorsal horn was decreased and activation of SIRT1 by SRT1720 also prevented the induction of LTP. Importantly, the spinal expression of Liver X receptors (LXRs) was increased, both at mRNA and protein level following SMIR. Application of LXRs agonist T0901317 to the spinal dorsal horn prevented LTP induction following SMIR. Mechanistically, T0901317 enhanced the expression of SIRT1 and decreased the expression of ac-NF-κB p65 and TNFα. Spinal application of SIRT1 antagonist EX-527, 30 min before T0901317 administration, completely blocked the inhibiting effect of T0901317 on LTP, and on expression of ac-NF-κB p65 and TNFα. These results indicated that activation of LXRs prevented SMIR-induced LTP by inhibiting NF-κB/TNFα pathway via increasing SIRT1 expression.
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477
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ALSUntangled no. 49: resveratrol. Amyotroph Lateral Scler Frontotemporal Degener 2019; 20:619-624. [PMID: 30945567 DOI: 10.1080/21678421.2019.1593596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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478
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Pons DG, Vilanova-Llompart J, Gaya-Bover A, Alorda-Clara M, Oliver J, Roca P, Sastre-Serra J. The phytoestrogen genistein affects inflammatory-related genes expression depending on the ERα/ERβ ratio in breast cancer cells. Int J Food Sci Nutr 2019; 70:941-949. [DOI: 10.1080/09637486.2019.1597025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Daniel Gabriel Pons
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
| | - Joana Vilanova-Llompart
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
| | - Auba Gaya-Bover
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
| | - Marina Alorda-Clara
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
| | - Jordi Oliver
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
- Ciber Fisiopatología Obesidad y Nutrición (CB06/03) Instituto Salud Carlos III, Madrid, Spain
| | - Pilar Roca
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
- Ciber Fisiopatología Obesidad y Nutrición (CB06/03) Instituto Salud Carlos III, Madrid, Spain
| | - Jorge Sastre-Serra
- Grupo Multidisciplinar de Oncología Traslacional Institut, Universitari d´Investigació en Ciències de la Salut (IUNICS) Universitat de les Illes Balears, Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de las Islas Baleares (IdISBa), Hospital Universitario Son Espases, edificio S, Palma de Mallorca, Spain
- Ciber Fisiopatología Obesidad y Nutrición (CB06/03) Instituto Salud Carlos III, Madrid, Spain
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479
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Liu HW, Kao HH, Wu CH. Exercise training upregulates SIRT1 to attenuate inflammation and metabolic dysfunction in kidney and liver of diabetic db/db mice. Nutr Metab (Lond) 2019; 16:22. [PMID: 30988688 PMCID: PMC6446356 DOI: 10.1186/s12986-019-0349-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/26/2019] [Indexed: 02/06/2023] Open
Abstract
Background Chronic inflammation and metabolic dysregulation may eventually cause tissue damage in obesity-related diseases such as type 2 diabetes. The effects of SIRT1 on integration of metabolism and inflammation may provide a therapeutic target for treatment of obesity-related diseases. We examined the underlying mechanism of moderate intensity aerobic exercise on kidney and liver in obese diabetic db/db mice, mainly focusing on inflammation and metabolic dysfunction. Methods Functional and morphological alterations and metabolic and inflammatory signaling were examined in type 2 diabetic db/db mice with or without exercise training (5.2 m/min, 1 h/day, and 5 days/week for a total of 8 weeks). Results Exercise training prevented weight gain in db/db + Ex mice, but it did not reduce glucose and insulin levels. Exercise lowered serum creatinine, urea, and triglyceride levels and hepatic AST and ALT activity in db/db + Ex mice. Reduced kidney size and morphological alterations including decreased glomerular cross-sectional area and hepatic macrovesicles were observed in db/db + Ex mice compared with untrained db/db mice. Mechanistically, preventing loss of SIRT1 through exercise was linked to reduced acetylation of NF-κB in kidney and liver of db/db + Ex mice. Exercise increased citrate synthase and mitochondrial complex I activity, subunits of mitochondrial complexes (I, II, and V) and PGC1α at protein level in kidney of db/db + Ex mice compared with non-exercise db/db mice. Changes in enzyme activity and subunits of mitochondrial complexes were not observed in liver among three groups. Conclusion Exercise-induced upregulation of SIRT1 attenuates inflammation and metabolic dysfunction, thereby alleviating the progression of diabetic nephropathy and hepatic steatosis in type 2 diabetes mellitus.
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Affiliation(s)
- Hung-Wen Liu
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
| | - Hao-Han Kao
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
| | - Chi-Hang Wu
- Department of Physical Education, National Taiwan Normal University, 162, Section 1, Heping E. Rd, Taipei City, Taiwan
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480
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Morris G, Maes M, Berk M, Puri BK. Myalgic encephalomyelitis or chronic fatigue syndrome: how could the illness develop? Metab Brain Dis 2019; 34:385-415. [PMID: 30758706 PMCID: PMC6428797 DOI: 10.1007/s11011-019-0388-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 01/23/2019] [Indexed: 12/19/2022]
Abstract
A model of the development and progression of chronic fatigue syndrome (myalgic encephalomyelitis), the aetiology of which is currently unknown, is put forward, starting with a consideration of the post-infection role of damage-associated molecular patterns and the development of chronic inflammatory, oxidative and nitrosative stress in genetically predisposed individuals. The consequences are detailed, including the role of increased intestinal permeability and the translocation of commensal antigens into the circulation, and the development of dysautonomia, neuroinflammation, and neurocognitive and neuroimaging abnormalities. Increasing levels of such stress and the switch to immune and metabolic downregulation are detailed next in relation to the advent of hypernitrosylation, impaired mitochondrial performance, immune suppression, cellular hibernation, endotoxin tolerance and sirtuin 1 activation. The role of chronic stress and the development of endotoxin tolerance via indoleamine 2,3-dioxygenase upregulation and the characteristics of neutrophils, monocytes, macrophages and T cells, including regulatory T cells, in endotoxin tolerance are detailed next. Finally, it is shown how the immune and metabolic abnormalities of chronic fatigue syndrome can be explained by endotoxin tolerance, thus completing the model.
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Affiliation(s)
- Gerwyn Morris
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
| | - Michael Maes
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
- Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Michael Berk
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Victoria, Australia
- Department of Psychiatry, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
- Florey Institute for Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
- Orygen, The National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia
| | - Basant K Puri
- Department of Medicine, Imperial College London, Hammersmith Hospital, London, England, W12 0HS, UK.
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481
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Teissier T, Quersin V, Gnemmi V, Daroux M, Howsam M, Delguste F, Lemoine C, Fradin C, Schmidt AM, Cauffiez C, Brousseau T, Glowacki F, Tessier FJ, Boulanger E, Frimat M. Knockout of receptor for advanced glycation end-products attenuates age-related renal lesions. Aging Cell 2019; 18:e12850. [PMID: 30794349 PMCID: PMC6413655 DOI: 10.1111/acel.12850] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 09/04/2018] [Accepted: 09/09/2018] [Indexed: 01/10/2023] Open
Abstract
Pro‐aging effects of endogenous advanced glycation end‐products (AGEs) have been reported, and there is increasing interest in the pro‐inflammatory and ‐fibrotic effects of their binding to RAGE (the main AGE receptor). The role of dietary AGEs in aging remains ill‐defined, but the predominantly renal accumulation of dietary carboxymethyllysine (CML) suggests the kidneys may be particularly affected. We studied the impact of RAGE invalidation and a CML‐enriched diet on renal aging. Two‐month‐old male, wild‐type (WT) and RAGE−/− C57Bl/6 mice were fed a control or a CML‐enriched diet (200 μg CML/gfood) for 18 months. Compared to controls, we observed higher CML levels in the kidneys of both CML WT and CML RAGE−/− mice, with a predominantly tubular localization. The CML‐rich diet had no significant impact on the studied renal parameters, whereby only a trend to worsening glomerular sclerosis was detected. Irrespective of diet, RAGE−/− mice were significantly protected against nephrosclerosis lesions (hyalinosis, tubular atrophy, fibrosis and glomerular sclerosis) and renal senile apolipoprotein A‐II (ApoA‐II) amyloidosis (p < 0.001). A positive linear correlation between sclerosis score and ApoA‐II amyloidosis score (r = 0.92) was observed. Compared with old WT mice, old RAGE−/− mice exhibited lower expression of inflammation markers and activation of AKT, and greater expression of Sod2 and SIRT1. Overall, nephrosclerosis lesions and senile amyloidosis were significantly reduced in RAGE−/− mice, indicating a protective effect of RAGE deletion with respect to renal aging. This could be due to reduced inflammation and oxidative stress in RAGE−/− mice, suggesting RAGE is an important receptor in so‐called inflamm‐aging.
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Affiliation(s)
- Thibault Teissier
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Valentine Quersin
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Nephrology; CHU Lille; Lille France
| | - Viviane Gnemmi
- Department of Pathology; U1172 - Jean-Pierre Aubert Research Center, INSERM, CHU Lille, University of Lille; Lille France
| | - Maité Daroux
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Mike Howsam
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Florian Delguste
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Cécile Lemoine
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Chantal Fradin
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Ann-Marie Schmidt
- Department of Medicine, Diabetes Research Center; NYU Langone Medical Center; New York New York
| | - Christelle Cauffiez
- EA4483 IMPECS-IMPact of Environmental ChemicalS on Human Health; CHU Lille, University of Lille; Lille France
| | - Thierry Brousseau
- UF8832 - Biochimie Automatisée; Pôle de Biologie Pathologie Génétique; CHU Lille; Lille France
| | - François Glowacki
- Department of Nephrology; CHU Lille; Lille France
- EA4483 IMPECS-IMPact of Environmental ChemicalS on Human Health; CHU Lille, University of Lille; Lille France
| | - Frédéric J. Tessier
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
| | - Eric Boulanger
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Geriatrics; CHU Lille; Lille France
| | - Marie Frimat
- U995 - Lille Inflammation Research International Center; INSERM, CHU Lille, University of Lille; Lille France
- Department of Nephrology; CHU Lille; Lille France
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482
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Apoptosis Induction byHistone Deacetylase Inhibitors in Cancer Cells: Role of Ku70. Int J Mol Sci 2019; 20:ijms20071601. [PMID: 30935057 PMCID: PMC6480544 DOI: 10.3390/ijms20071601] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 01/02/2023] Open
Abstract
Histone deacetylases (HDACs) are a group of enzymes that regulate gene transcription by controlling deacetylation of histones and non-histone proteins. Overexpression of HDACs is found in some types of tumors and predicts poor prognosis. Five HDAC inhibitors are approved for the treatment of cutaneous T-cell lymphoma, peripheral T-cell lymphoma, and multiple myeloma. Treatment with HDAC inhibitors regulates gene expression with increased acetylated histones with unconfirmed connection with therapy. Apoptosis is a key mechanism by which HDAC inhibitors selectively kill cancer cells, probably due to acetylation of non-histone proteins. Ku70 is a protein that repairs DNA breaks and stabilizes anti-apoptotic protein c-FLIP and proapoptotic protein Bax, which is regulated by acetylation. HDAC inhibitors induce Ku70 acetylation with repressed c-FLIP and activated Bax in cancer cells. Current studies indicate that Ku70 is a potential target of HDAC inhibitors and plays an important role during the induction of apoptosis.
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483
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Abstract
Macrophages are the primary targets of Mycobacterium tuberculosis infection; the early events of macrophage interaction with M. tuberculosis define subsequent progression and outcome of infection. M. tuberculosis can alter the innate immunity of macrophages, resulting in suboptimal Th1 immunity, which contributes to the survival, persistence, and eventual dissemination of the pathogen. Macrophages are the primary targets of Mycobacterium tuberculosis infection; the early events of macrophage interaction with M. tuberculosis define subsequent progression and outcome of infection. M. tuberculosis can alter the innate immunity of macrophages, resulting in suboptimal Th1 immunity, which contributes to the survival, persistence, and eventual dissemination of the pathogen. Recent advances in immunometabolism illuminate the intimate link between the metabolic states of immune cells and their specific functions. In this review, we describe the little-studied biphasic metabolic dynamics of the macrophage response during progression of infection by M. tuberculosis and discuss their relevance to macrophage immunity and M. tuberculosis pathogenicity. The early phase of macrophage infection, which is marked by M1 polarization, is accompanied by a metabolic switch from mitochondrial oxidative phosphorylation to hypoxia-inducible factor 1 alpha (HIF-1α)-mediated aerobic glycolysis (also known as the Warburg effect in cancer cells), as well as by an upregulation of pathways involving oxidative and antioxidative defense responses, arginine metabolism, and synthesis of bioactive lipids. These early metabolic changes are followed by a late adaptation/resolution phase in which macrophages transition from glycolysis to mitochondrial oxidative metabolism, with a consequent dampening of macrophage proinflammatory and antimicrobial responses. Importantly, the identification of upregulated metabolic pathways and/or metabolic regulatory mechanisms with immunomodulatory functions during M1 polarization has revealed novel mechanisms of M. tuberculosis pathogenicity. These advances can lead to the development of novel host-directed therapies to facilitate bacterial clearance in tuberculosis by targeting the metabolic state of immune cells.
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484
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Poly(ADP-ribose) Polymerase (PARP) and PARP Inhibitors: Mechanisms of Action and Role in Cardiovascular Disorders. Cardiovasc Toxicol 2019; 18:493-506. [PMID: 29968072 DOI: 10.1007/s12012-018-9462-2] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Poly(ADP-ribosyl)ation is an immediate cellular repair response to DNA damage and is catalyzed primarily by poly(ADP-ribose)polymerase-1 (PARP1), which is the most abundant of the 18 different PARP isoforms and accounts for more than 90% of the catalytic activity of PARP in the cell nucleus. Upon detection of a DNA strand break, PARP1 binds to the DNA, cleaves nicotinamide adenine dinucleotide between nicotinamide and ribose and then modifies the DNA nuclear acceptor proteins by formation of a bond between the protein and the ADP-ribose residue. This generates ribosyl-ribosyl linkages that act as a signal for other DNA-repairing enzymes and DNA base repair. Extensive DNA breakage in cells results in excessive activation of PARP with resultant depletion of the cellular stores of nicotinamide adenine dinucleotide (NAD+) which slows the rate of glycolysis, mitochondrial electron transport, and ultimately ATP formation in these cells. This paper focuses on PARP in DNA repair in atherosclerosis, acute myocardial infarction/reperfusion injury, and congestive heart failure and the role of PARP inhibitors in combating the effects of excessive PARP activation in these diseases. Free oxygen radicals and nitrogen radicals in arteries contribute to disruption of the vascular endothelial glycocalyx, which increase the permeability of the endothelium to inflammatory cells and also low-density lipoproteins and the accumulation of lipid in the vascular intima. Mild inflammation and DNA damage within vascular cells promote PARP1 activation and DNA repair. Moderate DNA damage induces caspase-dependent PARP cleavage and vascular cell apoptosis. Severe DNA damage due to vascular inflammation causes excessive activation of PARP1. This causes endothelial cell depletion of NAD+ and ATP, downregulation of atheroprotective SIRT1, necrotic cell death, and ultimately atherosclerotic plaque disruption. Inhibition of PARP decreases vascular endothelial cell adhesion P-selectin and ICAM-1 molecules, inflammatory cells, pro-death caspase-3, and c-Jun N-terminal kinase (JNK) activation and upregulates prosurvival extracellular signal-regulated kinases and AKT, which decrease vascular cell apoptosis and necrosis and limit atherosclerosis and plaque disruption. In myocardial infarction with coronary occlusion then reperfusion, which occurs with coronary angioplasty or thrombolytic therapy, reperfusion injury occurs in as many as 31% of patients and is caused by inflammatory cells, free oxygen and nitrogen radicals, the rapid transcriptional activation of inflammatory cytokines, and the activation of PARP1. Inhibition of PARP attenuates neutrophil infiltration and inflammatory cytokine expression in the reperfused myocardium and preserves myocardial NAD+ and ATP. In addition, PARP inhibition increases the activation of myocyte survival enzymes protein kinase B (Akt) and protein kinase C epsilon (PKCε), and decreases the activity of myocardial ventricular remodeling enzymes PKCα/β, PKCζ/λ, and PKCδ. As a consequence, cardiomyocyte and vascular endothelial cell necrosis is decreased and myocardial contractility is preserved. In heart failure and circulatory shock in animal models, PARP inhibition significantly attenuates decreases in left ventricular systolic pressure, ventricular contractility and relaxation, stroke volume, and increases survival by limiting or preventing upregulation of adhesion molecules, proinflammatory cytokines, myocardial mononuclear cell infiltration, and PKCα/β and PKC λ/ζ. In this manner, PARP inhibition partially restores the myocardial concentrations of NAD+, limits ventricular remodeling and fibrosis, and prevents significant decreases in myocardial contractility. Based primarily on investigations in preclinical models of atherosclerosis, myocardial infarction, and heart failure, PARP inhibition appears to be beneficial in limiting or inhibiting cardiovascular dysfunction. These studies indicate that investigations of acute and chronic PARP inhibition are warranted in patients with atherosclerotic coronary artery disease.
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485
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Gong Z, Huang J, Xu B, Ou Z, Zhang L, Lin X, Ye X, Kong X, Long D, Sun X, He X, Xu L, Li Q, Xuan A. Urolithin A attenuates memory impairment and neuroinflammation in APP/PS1 mice. J Neuroinflammation 2019; 16:62. [PMID: 30871577 PMCID: PMC6417212 DOI: 10.1186/s12974-019-1450-3] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/05/2019] [Indexed: 12/30/2022] Open
Abstract
Background Alzheimer’s disease (AD) is a progressive neurodegenerative disorder characterized by an abnormal accumulation of amyloid-β (Aβ) plaques, neuroinflammation, and impaired neurogenesis. Urolithin A (UA), a gut-microbial metabolite of ellagic acid, has been reported to exert anti-inflammatory effects in the brain. However, it is unknown whether UA exerts its properties of anti-inflammation and neuronal protection in the APPswe/PS1ΔE9 (APP/PS1) mouse model of AD. Methods Morris water maze was used to detect the cognitive function. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay was performed to detect neuronal apoptosis. Immunohistochemistry analyzed the response of glia, Aβ deposition, and neurogenesis. The expression of inflammatory mediators were measured by enzyme-linked immunosorbent assay (ELISA) and quantitative real-time polymerase chain reaction (qRT-PCR). The modulating effects of UA on cell signaling pathways were assayed by Western blotting. Results We demonstrated that UA ameliorated cognitive impairment, prevented neuronal apoptosis, and enhanced neurogenesis in APP/PS1 mice. Furthermore, UA attenuated Aβ deposition and peri-plaque microgliosis and astrocytosis in the cortex and hippocampus. We also found that UA affected critical cell signaling pathways, specifically by enhancing cerebral AMPK activation, decreasing the activation of P65NF-κB and P38MAPK, and suppressing Bace1 and APP degradation. Conclusions Our results indicated that UA imparted cognitive protection by protecting neurons from death and triggering neurogenesis via anti-inflammatory signaling in APP/PS1 mice, suggesting that UA might be a promising therapeutic drug to treat AD.
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Affiliation(s)
- Zhuo Gong
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Jingyi Huang
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Biao Xu
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Zhenri Ou
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Le Zhang
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Xiaohong Lin
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Xiujuan Ye
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Xuejian Kong
- Department of Neurology of the Sixth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511518, China
| | - Dahong Long
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Xiangdong Sun
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Xiaosong He
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Liping Xu
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Qingqing Li
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China
| | - Aiguo Xuan
- Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, 510260, China.
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486
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Xu L, Huang G, Guo X, Zhou Q, He S. Total flavonoids, extracted from Polygonum knotweed L, exert beneficial hepatoprotection against liver injury. J Cell Biochem 2019; 120:12677-12683. [PMID: 30854697 DOI: 10.1002/jcb.28535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/30/2018] [Accepted: 01/09/2019] [Indexed: 12/14/2022]
Abstract
Hepatic function is of great concern in metabolic and immunological homeostasis. Traditionally, medical management to liver damage may benefit from phytomedicine, such as Chinese herbs. In southern China, Polygonum perfoliatum L can contribute to alleviating pathological symptoms of liver disease, such as hepatitis. However, bioactive compounds of hepatoprotection in this herb are still less to be investigated. In this study, clinical data of patients with drug-induced liver injury were collected on the basis of serological analyses. In addition, we extracted and identified total flavonoids from Polygonum perfoliatum L (TFPPL) before implementing biochemical experiments in vivo. In human data, the blood contents of liver function enzymes were visibly elevated, and the percentage of immune cells were abnormally changed. The data from the animal study showed that TFPPL-treated carbon tetrachloride-exposed mice resulted in reduced absolute liver mass and lowered blood levels of liver functional enzymes (alanine transaminase and aspartate transaminase). In enzyme-linked immunosorbent assay, the comparable data indicated that serological tumor necrosis factor α (TNF-α), interleukin 6, and heat shock protein 90 (Hsp90) contents were reduced in TFPPL-treated mice. In histopathological observations, TFPPL-treated mice exhibited reduced hepatocellular Hsp90, TNF-α, nuclear factor κ-light-chain-enhancer of activated B cells-p65 positive cells, and lowered Bax and caspase-3-labeled cells in the livers. Further, intrasplenic integrin β1, 5'-nucleotidase, and antigen KI-67 positive cells were increased after TFPPL treatments. Taken together, our present findings demonstrate that herb-extracted TFPPL exert potential hepatoprotective activities against chemical-induced liver damage in mice, possibly through the pharmacological mechanisms of inhibiting inflammatory stress and apoptosis, inactivating Hsp90 bioactivity in the liver, and improving splenic immunocompetence.
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Affiliation(s)
- Lingyuan Xu
- Department of Pharmacy, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Guikun Huang
- College of Pharmacy, Youjiang Medical University for Nationalities, Baise, China
| | - Xiaobao Guo
- Department of Pharmacy, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Qiji Zhou
- Department of Pharmacy, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Silu He
- Department of Pharmacy, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
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487
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Yu H, Zhang F, Guan X. Baicalin reverse depressive-like behaviors through regulation SIRT1-NF-kB signaling pathway in olfactory bulbectomized rats. Phytother Res 2019; 33:1480-1489. [PMID: 30848526 DOI: 10.1002/ptr.6340] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 02/02/2019] [Accepted: 02/15/2019] [Indexed: 11/08/2022]
Abstract
Depression is a common and detrimental illness that affects up to 120 million people worldwide. The present study was designed to evaluate the antidepressant-like effects and mechanisms of baicalin on olfactory bulbectomized model of depression. Baicalin treatment (20 and 40 mg/kg) significantly reversed the abnormal levels of sucrose consumption, open field test, and forced swimming test. Treatments with baicalin reversed the olfactory bulbectomized-induced alterations of serum corticosterone levels to a great extent. Our results further demonstrated that baicalin administration negatively regulated the expression of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF-α) in the hippocampus and hypothalamus. Furthermore, baicalin regulated Sirtuin 1 (SIRT1) and decreased the levels of p65 acetylation (ac-p65) in the hippocampus and hypothalamus. Moreover, in lipopolysaccharides-induced BV-2 cells, the levels of inflammatory factors (IL-1β), p65 acetylation at lysine 310, and SIRT1 expression were different in the group treated with both baicalin and nicotinamide compared with the group treated with baicalin, which suggests that baicalin regulates SIRT1 and thereby inhibits p65 acetylation. In summary, administration of baicalin reduces the levels of pro-inflammatory cytokines, possibly through regulation of SIRT1-NF-kB pathway. Our findings suggest a support into the potential of baicalin in therapeutic effect for depression.
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Affiliation(s)
- Haiyang Yu
- School of Pharmaceutical Sciences, Taishan Medical University, Taian, China.,Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, The State University of New York, Buffalo, New York
| | - Fangfang Zhang
- School of Pharmaceutical Sciences, Taishan Medical University, Taian, China
| | - Xidong Guan
- School of Pharmaceutical Sciences, Taishan Medical University, Taian, China
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488
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Gehrke N, Biedenbach J, Huber Y, Straub BK, Galle PR, Simon P, Schattenberg JM. Voluntary exercise in mice fed an obesogenic diet alters the hepatic immune phenotype and improves metabolic parameters - an animal model of life style intervention in NAFLD. Sci Rep 2019; 9:4007. [PMID: 30850619 PMCID: PMC6408519 DOI: 10.1038/s41598-018-38321-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Reproducible animal models to recapitulate the pathophysiology of non-alcoholic fatty liver disease (NAFLD) are urgently required to improve the understanding of the mechanisms of liver injury and to explore novel therapeutic options. Current guidelines recommend life-style interventions as first-line therapy for NAFLD and these types of intervention are considered standard-of-care. The current study establishes a reproducible mouse model of a life-style intervention in NAFLD using voluntary wheel running (VWR). Male C57BL/6J mice were fed a high-fat, high-carbohydrate diet (HFD) to induce NAFLD or a corresponding control diet for 12 weeks. Starting at week 9 of the obesogenic NAFLD diet, mice were randomized to either free access to a running wheel or being single caged resembling a sedentary (SED) life-style. VWR induced a transient weight reduction in HFD-fed mice up until week 10. In contrast to the SED mice, VWR mice exhibited normal ALT at the end of the intervention, while the metabolic alterations including elevated fasting glucose, insulin, triglyceride, and total cholesterol levels remained almost unchanged. Additionally, VWR prevented HFD-induced hepatic steatosis by alterations in key liver metabolic processes including the induction of fatty acid β-oxidation and lipogenesis inhibition following increased AMP-activated protein kinase (AMPK)-α activity. Phosphorylation of the serine kinase Akt in hepatic tissue was enhanced following VWR. Furthermore, VWR mice were protected from HFD-induced expression of pro-inflammatory cytokines, chemokines and liver macrophage infiltration. The SED/HFD group exhibited increasing activity of hepatic nuclear factor (NF)-κB p65, which was absent following exercise in the VWR/HFD group. In summary, in an obesogenic mouse model of NAFLD physical exercise improves fatty acid and glucose homeostasis and protects from macrophage-associated hepatic inflammation.
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Affiliation(s)
- Nadine Gehrke
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Jana Biedenbach
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Yvonne Huber
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Beate K Straub
- Institute of Pathology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Peter R Galle
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Perikles Simon
- Department of Sports Medicine, Rehabilitation and Prevention, Johannes Gutenberg University, Mainz, Germany
| | - Jörn M Schattenberg
- I. Department of Medicine, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
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489
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Effects of Ultraviolet Irradiation on Cellular Senescence in Keratinocytes Versus Fibroblasts. J Craniofac Surg 2019; 30:270-275. [PMID: 30444781 DOI: 10.1097/scs.0000000000004904] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aging is a biologic process characterized by time-dependent functional declines that are influenced by oxidative stress-induced inflammatory reactions. In particular, ultraviolet (UV) irradiation plays a key role in cellular senescence in photo-aged skin. However, the cellular senescence of epidermal keratinocytes and dermal fibroblasts by UV irradiation may differ depending on the exposure time and dosage of UV irradiation. Therefore, the purpose of the study was to evaluate and compare the effects of UV irradiation on cellular senescence in human epidermal keratinocytes (HaCaT) and human dermal fibroblasts (HDFs). After cell viability test, 200 mJ/cm UV irradiation was used in this study. To evaluate the reactive oxygen species and reactive nitrogen species production, the levels of glutathione (GSH) and nitrite (NO2) were measured. We also performed reverse transcription-polymerase chain reaction, Western blot analysis, and senescence-associated beta-galactosidase assay. An overall decrease in GSH and an increase in NO2 were observed in the HaCaT and HDF cells. However, the time-line and dose-dependent effects varied. Higher expressions of tumor necrosis factor-α, inducible nitric oxide synthase, and interleukin-1β than that of the control group were observed in both cells. The HDF cells showed high levels of matrix metallopeptidase 9 and neutral endopeptidase protein but low levels of SIRT1 and procollagen I. The expression of nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB) was increased in the HaCaT cells, but not in the HDF cells. The NF-κB peaked at 1 hour after UV irradiation in the HaCaT cells. The "turning-on" signal was faster in the irradiated HaCaT cells.
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490
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Travelli C, Consonni FM, Sangaletti S, Storto M, Morlacchi S, Grolla AA, Galli U, Tron GC, Portararo P, Rimassa L, Pressiani T, Mazzone M, Trovato R, Ugel S, Bronte V, Tripodo C, Colombo MP, Genazzani AA, Sica A. Nicotinamide Phosphoribosyltransferase Acts as a Metabolic Gate for Mobilization of Myeloid-Derived Suppressor Cells. Cancer Res 2019; 79:1938-1951. [PMID: 30777853 DOI: 10.1158/0008-5472.can-18-1544] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 12/31/2018] [Accepted: 02/13/2019] [Indexed: 11/16/2022]
Abstract
Cancer induces alteration of hematopoiesis to fuel disease progression. We report that in tumor-bearing mice the macrophage colony-stimulating factor elevates the myeloid cell levels of nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme in the NAD salvage pathway, which acts as negative regulator of the CXCR4 retention axis of hematopoietic cells in the bone marrow. NAMPT inhibits CXCR4 through a NAD/Sirtuin 1-mediated inactivation of HIF1α-driven CXCR4 gene transcription, leading to mobilization of immature myeloid-derived suppressor cells (MDSC) and enhancing their production of suppressive nitric oxide. Pharmacologic inhibition or myeloid-specific ablation of NAMPT prevented MDSC mobilization, reactivated specific antitumor immunity, and enhanced the antitumor activity of immune checkpoint inhibitors. Our findings identify NAMPT as a metabolic gate of MDSC precursor function, providing new opportunities to reverse tumor immunosuppression and to restore clinical efficacy of immunotherapy in patients with cancer. SIGNIFICANCE: These findings identify NAMPT as a metabolic gate of MDSC precursor function, providing new opportunities to reverse tumor immunosuppression and to restore clinical efficacy of immunotherapy in cancer patients.
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Affiliation(s)
- Cristina Travelli
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy.,Department of Pharmaceutical Sciences, University of Pavia, Pavia, Italy
| | - Francesca Maria Consonni
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Sabina Sangaletti
- Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Mariangela Storto
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Sara Morlacchi
- Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Ambra A Grolla
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy
| | - Ubaldina Galli
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy
| | - Gian Cesare Tron
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy
| | - Paola Portararo
- Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Lorenza Rimassa
- Medical Oncology and Hematology Unit, Humanitas Cancer Center, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Tiziana Pressiani
- Medical Oncology and Hematology Unit, Humanitas Cancer Center, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, Vesalius Research Center, VIB, Leuven, Belgium
| | - Rosalinda Trovato
- Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Stefano Ugel
- Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Vincenzo Bronte
- Department of Medicine, Section of Immunology, University of Verona, Verona, Italy
| | - Claudio Tripodo
- Human Pathology Section, Department of Health Sciences, University of Palermo, Palermo, Italy.,Tumor and Microenvironment Histopathology Unit, the FIRC Institute of Molecular Medicine (IFOM), Milan, Italy
| | - Mario P Colombo
- Department of Research, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - Armando A Genazzani
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy.
| | - Antonio Sica
- Department of Pharmaceutical Sciences, University of Eastern Piedmont, Novara, Italy. .,Department of Inflammation and Immunology, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
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491
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Mechanisms of Aerobic Exercise Upregulating the Expression of Hippocampal Synaptic Plasticity-Associated Proteins in Diabetic Rats. Neural Plast 2019; 2019:7920540. [PMID: 30911292 PMCID: PMC6398012 DOI: 10.1155/2019/7920540] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 11/21/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
We investigated the effects of aerobic exercise on the expression of hippocampal synaptic plasticity-associated proteins in rats with type 2 diabetes and their possible mechanisms. A type 2 diabetes rat model was established with 8 weeks of high-fat diet combined with a single intraperitoneal injection of streptozotocin (STZ). Then, a 4-week aerobic exercise intervention was conducted. Memory performance was measured with Y maze tests. The expression and activity of synaptic plasticity-associated proteins and of proteins involved in the PI3K/Akt/mTOR, AMPK/Sirt1, and NFκB/NLRP3/IL-1β signaling pathways were evaluated by western blot. Our results show that aerobic exercise promotes the expression of synaptic plasticity-associated proteins in the hippocampus of diabetic rats. Aerobic exercise also activates the PI3K/Akt/mTOR and AMPK/Sirt1 signaling pathways and inhibits the NFκB/NLRP3/IL-1β signaling pathway in the hippocampus of diabetic rats. Therefore, modulating the PI3K/Akt/mTOR, AMPK/Sirt1, and NFκB/NLRP3/IL-1β signaling pathways is probably the mechanism of aerobic exercise upregulating the expression of hippocampal synaptic plasticity-associated proteins in diabetic rats.
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492
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Solanki A, Bhatt LK, Johnston TP, Prabhavalkar KS. Targeting Matrix Metalloproteinases for Diabetic Retinopathy: The Way Ahead? Curr Protein Pept Sci 2019; 20:324-333. [DOI: 10.2174/1389203719666180914093109] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/15/2018] [Accepted: 08/29/2018] [Indexed: 12/21/2022]
Abstract
Diabetic retinopathy (DR) is a severe sight-threatening complication of diabetes. It causes
progressive damage to the retina and is the most common cause of vision impairment and blindness
among diabetic patients. DR develops as a result of various changes in the ocular environment. Such
changes include accelerated mitochondrial dysfunction, apoptosis, reactive oxygen species production,
and formation of acellular capillaries. Matrix metalloproteinases (MMPs) are one of the major culprits in
causing DR. Under physiological conditions, MMPs cause remodeling of the extracellular matrix in the
retina, while under pathological conditions, they induce retinal cell apoptosis. This review focuses on
the roles of various MMPs, primarily MMP-2 and MMP-9 in DR and also their participation in oxidative
stress, mitochondrial dysfunction, and apoptosis, along with their involvement in various signaling
pathways. This review also underscores different strategies to inhibit MMPs, thus suggesting that MMPs
may represent a putative therapeutic target in the treatment of DR.
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Affiliation(s)
- Ankita Solanki
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (W), Mumbai, India
| | - Lokesh K. Bhatt
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (W), Mumbai, India
| | - Thomas P. Johnston
- Division of Pharmaceutical Sciences, University of Missouri-Kansas City, Kansas City, MO, United States
| | - Kedar S. Prabhavalkar
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Vile Parle (W), Mumbai, India
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493
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Wu H, Wang X, Gao S, Dai L, Tong H, Gao H, Lei Z, Han Y, Wang Z, Han L, Qi D. Yiqi-Huoxue Granule (YQHX) Downregulates Prothrombotic Factors by Modulating KLF2 and NF- κB in HUVECs following LPS Stimulation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:9425183. [PMID: 30881601 PMCID: PMC6381561 DOI: 10.1155/2019/9425183] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/27/2018] [Accepted: 11/27/2018] [Indexed: 12/31/2022]
Abstract
The Yiqi-Huoxue granule (YQHX) is a traditional Chinese medication widely used in the therapy of the traditional Chinese medicine diagnosis "Qi deficiency" or "blood stasis" in China. Both these symptoms are related to inflammation, but the mechanisms of YQHX against inflammation are largely unknown. Thus, our present study investigated the effects of YQHX on regulating inflammatory responses induced by lipopolysaccharides (LPS) in HUVECs. Our data found that YQHX remarkably inhibits the production of prothrombotic factors, plasminogen activator inhibitor-1 (PAI-1) and tissue factor (TF), while it upregulates the protein expression of Kruppel-like factor 2 (KLF2). The increase in PAI-1 and TF was significantly attenuated through a transgenic knockdown in KLF2 with a Lenti-shKLF2 vector. YQHX also decreases the phosphorylation of nuclear factor-κB (NF-κB) p65 and IκB following LPS stimulation, and it effectively suppresses PAI-1 and TF via a NF-κB-dependent mechanism. Taken together, our results suggest that YQHX provides a notable antithrombotic activity via regulating the KLF2 expression and NF-κB signaling pathway in HUVECs. The KLF2 and NF-κB may be potential therapeutic targets for interventions of inflammation associated with atherosclerosis.
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Affiliation(s)
- Hong Wu
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
- Institute of Cardiovascular Disease, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Xinzhou Wang
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Shuibo Gao
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Liping Dai
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Haixia Gao
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Zhen Lei
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Yongjun Han
- Laboratory of Cell Imaging, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Zhentao Wang
- Institute of Cardiovascular Disease, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Lihua Han
- Institute of Cardiovascular Disease, Henan University of Chinese Medicine, Zhengzhou 450002, China
| | - Dake Qi
- Memorial University of Newfoundland, Division of Biomedical Sciences, Faculty of Medicine, Newfoundland, Canada A1B 3V6
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494
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Arbutin attenuates LPS-induced lung injury via Sirt1/ Nrf2/ NF-κBp65 pathway. Pulm Pharmacol Ther 2019; 54:53-59. [DOI: 10.1016/j.pupt.2018.12.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 11/29/2018] [Accepted: 12/05/2018] [Indexed: 12/30/2022]
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495
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Tan S, Shan Y, Lin Y, Liao S, Zhang B, Zeng Q, Wang Y, Deng Z, Chen C, Hu X, Peng L, Qiu W, Lu Z. Neutralization of interleukin-9 ameliorates experimental stroke by repairing the blood-brain barrier via down-regulation of astrocyte-derived vascular endothelial growth factor-A. FASEB J 2019; 33:4376-4387. [PMID: 30694693 DOI: 10.1096/fj.201801595rr] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Astrocytes mediate the destruction of the blood-brain barrier (BBB) during ischemic stroke (IS). IL-9 is a pleiotropic cytokine that we previously found to be highly expressed in peripheral blood mononuclear cells from patients with IS, and the presence of IL-9 receptors on astrocytes has been reported in the literature. Here, we detected the effect of IL-9 on astrocytes using an anti-IL-9-neutralizing antibody to treat rats with experimental stroke. Supernatants from astrocytes treated with or without oxygen-glucose deprivation and/or IL-9 were incubated with bEnd.3 cell monolayers after blocking the IL-9 receptor on the endothelium. Immunofluorescence staining and Western blot analyses were conducted to observe the change in tight junction proteins (TJPs) in bEnd.3 cells as well as the level of VEGF-A and possible signal pathways in astrocytes. We also applied middle cerebral artery occlusion (MCAO) models to determine the effect of anti-IL-9-neutralizing antibodies on IS. As a result, astrocyte-conditioned medium treated with IL-9 aggravated the disruption of the BBB accomplished by the degradation of TJPs in endothelial cells. In addition, IL-9 increased the level of VEGF-A in astrocytes, and blocking the effect of VEGF-A reversed the breakdown of the BBB. In the MCAO model, anti-IL-9-neutralizing antibody reduced the infarct volume and BBB destruction. Mechanistically, the anti-IL-9-neutralizing antibody repaired the damaged TJPs (zonula occludens 1, occludin, and claudin-5) and induced a decrease in VEGF-A expression in ischemic lateral brain tissue. In contrast, a local injection of recombinant murine IL-9 to the brain resulted in a marked up-regulation of VEGF-A in the striatum. In conclusion, anti-IL-9-neutralizing antibody can reduce the severity of IS partially by alleviating the destruction of the BBB via down-regulation of astrocyte-derived VEGF-A. This finding suggests that targeting IL-9 or VEGF-A could provide a new direction for the treatment of IS.-Tan, S., Shan, Y., Lin, Y., Liao, S., Zhang, B., Zeng, Q., Wang, Y., Deng, Z., Chen, C., Hu, X., Peng, L., Qiu, W., Lu, Z. Neutralization of IL-9 ameliorates experimental stroke by repairing the blood-brain barrier via down-regulation of astrocyte-derived vascular endothelial growth factor-A.
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Affiliation(s)
- Sha Tan
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yilong Shan
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yinyao Lin
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Siyuan Liao
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Bingjun Zhang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Qin Zeng
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yuge Wang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhezhi Deng
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Chen Chen
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xueqiang Hu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lisheng Peng
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wei Qiu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhengqi Lu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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496
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Xu HC, Lv W, Wang LM, Ye P, Hu J. Early Protection by Resveratrol in Rat Lung Transplantation. Med Sci Monit 2019; 25:760-770. [PMID: 30684444 PMCID: PMC6359885 DOI: 10.12659/msm.912345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Resveratrol is a multifunctional bioactive substance that has effects in anti-inflammation and prevention of ischemia-reperfusion injury. This study compared the inflammation and expression of related proteins during the early stages after transplantation to explore the effects and mechanisms of resveratrol on transplanted lung. MATERIAL AND METHODS Sprague-Dawley rats were randomized to receive pretreatment of resveratrol suspension (60 mg/kg; RES group), dexamethasone (1 mg/kg; DEM group), or normal saline solution (2 mL/kg; control group) 1 h before lung transplantation. The cytokine concentration in the serum and bronchoalveolar lavage fluid (BALF) of the recipients was determined 24 h after transplantation. Histopathologic evaluation, including lung injury score, and the expression of necroptosis-associated proteins was assessed. RESULTS Histopathologic evaluation showed pneumocyte damage and endothelialitis associated with hemorrhage in the alveoli in the control group, the severity of which was greater than that in the other 2 groups. The levels of interleukin-6 and tumor necrosis factor-a in the serum and BALF of the RES and DEM groups were lower than those in the control group. The expression of necroptosis-associated proteins in the RES group was lower than that in the control group, and was inversely proportional to lung injury. CONCLUSIONS Pretreatment with resveratrol protected rat lung in the early stages after transplantation. We determined a relationship between necroptosis-associated proteins and transplanted lung injury, which suggests that the mechanism of lung transplantation-associated ischemia-reperfusion injury may be related to necroptosis.
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Affiliation(s)
- Hai-Chao Xu
- Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Wang Lv
- Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Lu-Ming Wang
- Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Peng Ye
- Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
| | - Jian Hu
- Department of Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China (mainland)
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497
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Cannabisin F from Hemp ( Cannabis sativa) Seed Suppresses Lipopolysaccharide-Induced Inflammatory Responses in BV2 Microglia as SIRT1 Modulator. Int J Mol Sci 2019; 20:ijms20030507. [PMID: 30691004 PMCID: PMC6387064 DOI: 10.3390/ijms20030507] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 12/15/2022] Open
Abstract
Hemp seed (Fructus cannabis) is rich in lignanamides, and initial biological screening tests showed their potential anti-inflammatory and anti-oxidative capacity. This study investigated the possible effects and underlying mechanism of cannabisin F, a hempseed lignanamide, against inflammatory response and oxidative stress in lipopolysaccharide (LPS)-stimulated BV2 microglia cells. Cannabisin F suppressed the production and the mRNA levels of pro-inflammatory mediators such as interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α) in a concentration-dependent manner in LPS-stimulated BV2 microglia cell. Furthermore, cannabisin F enhanced SIRT1 expression and blocked LPS-induced NF-κB (Nuclear factor kappa B) signaling pathway activation by inhibiting phosphorylation of IκBα (Inhibit proteins of nuclear factor kappaB) and NF-κB p65. And the SIRT1 inhibitor EX527 significantly inhibited the effect of cannabisin F on pro-inflammatory cytokines production, suggesting that the anti-inflammatory effects of cannabisin F are SIRT1-dependent. In addition, cannabisin F reduced the production of cellular reactive oxygen species (ROS) and promoted the expression of Nrf2 (Nuclear factor erythroid-2 related factor 2) and HO-1 (Heme Oxygenase-1), suggesting that the anti-oxidative effects of cannabisin F are related to Nrf2 signaling pathway. Collectively, these results suggest that the neuro-protection effect of cannabisin F against LPS-induced inflammatory response and oxidative stress in BV2 microglia cells involves the SIRT1/NF-κB and Nrf2 pathway.
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498
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Resolvin D1 Promotes SIRT1 Expression to Counteract the Activation of STAT3 and NF-κB in Mice with Septic-Associated Lung Injury. Inflammation 2019; 41:1762-1771. [PMID: 30014231 DOI: 10.1007/s10753-018-0819-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Resolvin D1 (RvD1) is a novel endogenous docosahexaenoic acid (DHA)-derived lipid mediators, which possesses a dual role of anti-inflammation and promotes inflammation resolution. The aim of the present study was to assess the effects of RvD1 on cecal ligation and puncture (CLP) model of sepsis and explore the underlying mechanism. Six-to-eight-week-old male C57BL/6 mice were randomly divided into following three groups: sham-operated group (SO), CLP model group (CLP), and CLP+RvD1 group (RvD1). The SO group underwent the sham operation. The RvD1 groups were administered RvD1 (10-ng/g body weight) by penile vein injection, but the CLP groups were administered the same volume of vehicle (PBS) after CLP. We assessed the survival benefit of RvD1 in CLP-induced septic mice for 7 days. After 24 h, mice were sacrificed, bronchoalveolar lavage fluids (BALF) was collected for proinflammatory cytokines assay, and albumin assay and the lung tissues were harvested for histologic analysis, myeloperoxidase (MPO) activity and the expression of Sirtuin 1 (SIRT1), signal transducers, and activators of transcription 3 (STAT3), nuclear factor-κB (NF-κB), and mitogen-activated protein kinases (MAPKs). RvD1 treatment increased the survival time in mice with sepsis induced by CLP, reducing the MPO activity and albumin level at 24 h. The levels of inflammatory cytokines, including tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), and interleukin-6 (IL-6) in BALF were significantly decreased by RvD1. RvD1 promoted SIRT1 expression and suppressed the activation of NF-κB, STAT3, ERK, and p38 in lung tissues of septic mice. These results suggest that RvD1 may improve survival and attenuate the degree of lung inflammation reaction in mice with CLP by suppressing STAT3, NF-κB, ERK, and p38 expressions through a mechanism partly dependent on SIRT1.
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499
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Galbraith AR, Seabloom DE, Wuertz BR, Antonides JD, Steele VE, Wattenberg LW, Ondrey FG. Chemoprevention of Lung Carcinogenesis by Dietary Nicotinamide and Inhaled Budesonide. Cancer Prev Res (Phila) 2019; 12:69-78. [PMID: 30606719 DOI: 10.1158/1940-6207.capr-17-0402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 05/17/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022]
Abstract
Nicotinamide, the amide form of vitamin B3, and budesonide, a synthetic glucocorticoid used in the treatment of asthma, were evaluated to determine their individual and combinational chemopreventive efficacy on benzo(a)pyrene-induced lung tumors in female A/J mice. Nicotinamide fed at a dietary concentration of 0.75% significantly inhibited tumor multiplicity. Nicotinamide by aerosol inhalation at doses up to 15 mg/kg/day did not result in a statistically significant reduction in tumor multiplicity. Finally, dietary nicotinamide was administered with aerosol budesonide and tumor multiplicity reduced by 90% at 1 week and 49% at 8 weeks post last carcinogen dose. We conclude nicotinamide is an effective and safe agent for lung cancer dietary prevention at both early- and late-stage carcinogenesis and that efficacy is increased with aerosol budesonide. Combination chemoprevention with these agents is a well-tolerated and effective strategy which could be clinically advanced to human studies.
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Affiliation(s)
- Arthur R Galbraith
- Carcinogenesis and Chemoprevention Research Program, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Donna E Seabloom
- AeroCore Testing Services, Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota.,Department of Otolaryngology, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Beverly R Wuertz
- AeroCore Testing Services, Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota.,Department of Otolaryngology, Medical School, University of Minnesota, Minneapolis, Minnesota
| | - Jennifer D Antonides
- Carcinogenesis and Chemoprevention Research Program, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Vernon E Steele
- Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
| | - Lee W Wattenberg
- Carcinogenesis and Chemoprevention Research Program, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Frank G Ondrey
- Carcinogenesis and Chemoprevention Research Program, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota. .,AeroCore Testing Services, Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota.,Department of Otolaryngology, Medical School, University of Minnesota, Minneapolis, Minnesota
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500
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Oocyte Aging: The Role of Cellular and Environmental Factors and Impact on Female Fertility. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1247:109-123. [PMID: 31802446 DOI: 10.1007/5584_2019_456] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Female aging is one of the most important factors that impacts human reproduction. With aging, there is a natural decline in female fertility. The decrease in fertility is slow and steady in women aged 30-35 years; however, this decline is accelerated after the age of 35 due to decreases in the ovarian reserve and oocyte quality. Human oocyte aging is affected by different environmental factors, such as dietary habits and lifestyle. The ovarian microenvironment contributes to oocyte aging and longevity. The immediate oocyte microenvironment consists of the surrounding cells. Crosstalk between the oocyte and microenvironment is mediated by direct contact with surrounding cells, the extracellular matrix, and signalling molecules, including hormones, growth factors, and metabolic products. In this review, we highlight the different microenvironmental factors that accelerate human oocyte aging and decrease oocyte function. The ovarian microenvironment and the stress that is induced by environmental pollutants and a poor diet, along with other factors, impact oocyte quality and function and contribute to accelerated oocyte aging and diseases of infertility.
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