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Saruta J, To M, Sakaguchi W, Kondo Y, Tsukinoki K. Brain-derived neurotrophic factor is related to stress and chewing in saliva and salivary glands. JAPANESE DENTAL SCIENCE REVIEW 2019; 56:43-49. [PMID: 31879531 PMCID: PMC6920199 DOI: 10.1016/j.jdsr.2019.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/07/2019] [Accepted: 11/21/2019] [Indexed: 12/13/2022] Open
Abstract
Chewing is one of the most important orofacial functions. During this process, food is reduced in size, while saliva moistens the food and binds it into a bolus that can be easily swallowed. Characteristics of the oral system, including the number of teeth, bite force, and salivary flow, influence the masticatory process. In addition, salivary glands produce several cell growth factors and play an important role in human health. The nerve growth factor (NGF) family consists of NGF, brain-derived neurotrophic factor (BDNF), and neurotrophins-3 to 7. BDNF is a well-studied neurotrophin involved in the neurogenesis, differentiation, and maintenance of select peripheral and central neuronal cell populations during development and adulthood. However, there has been no detailed description of the expression of neurotrophins other than NGF in the salivary gland. We previously studied the effect of immobilization stress + chewing on BDNF secretion and its receptor, tyrosine receptor kinase B, in rat submandibular glands and found increased BDNF expression in duct cells under these conditions. In this review, we describe recent advances in understanding the role of stress and chewing-related BDNF in the saliva and salivary glands.
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Affiliation(s)
- Juri Saruta
- Department of Oral Science, Division of Salivary Gland and Health Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
| | - Masahiro To
- Department of Oral Science, Division of Salivary Gland and Health Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
| | - Wakako Sakaguchi
- Department of Oral Science, Division of Salivary Gland and Health Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
| | - Yusuke Kondo
- Department of Pathology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Keiichi Tsukinoki
- Department of Oral Science, Division of Salivary Gland and Health Medicine, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
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Ma L, Xiao H, Wen J, Liu Z, He Y, Yuan F. Possible mechanism of Vitis vinifera L. flavones on neurotransmitters, synaptic transmission and related learning and memory in Alzheimer model rats. Lipids Health Dis 2018; 17:152. [PMID: 29973282 PMCID: PMC6030743 DOI: 10.1186/s12944-018-0708-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/12/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND This study explored the possible mechanism of flavones from Vitis vinifera L. (VTF) on neurotransmitters, synaptic transmission and related learning and memory in rats with Alzheimer disease (AD). METHODS The researchers injected amyloid-β(25-35) into the hippocampus to establish AD model rats. The Sprague-Dawley (SD) rats were divided into a control group, a donepezil group, an AD model group, a VTF low-dose group, a VTF medium-dose group and a VTF high-dose group. The researchers detected the activity of choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) according to kit instructions. The protein expression of brain-derived neurotrophic factor (BDNF), synaptotagmin-1 (SYT1) and cyclic adenosine monophosphate response element binding protein (CREB) in the rats' hippocampi was detected by immunohistochemistry and Western blot, and the gene expression of cAMP-regulated enhancer (CRE) was detected by real-time quantitative polymerase chain reaction (PCR). RESULTS VTF may enhance the protein expression of p-CREB, BDNF and SYT1 in rat hippocampi, depending on dose. The messenger RNA (mRNA) level of CREB was significantly higher in the VTF high-dose group than in the model group, which was consistent with the results of Western blotting. VTF may reduce the activity of AChE and increase that of ChAT in rat hippocampi. Finally, VTF effectively improved the learning and memory abilities of AD rats. CONCLUSIONS VTF can promote synaptic plasticity and indirectly affect the expression of cholinergic neurotransmitters, which may be one mechanism of VTF protection in AD rats.
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Affiliation(s)
- Lijuan Ma
- College of Basic Medical, Xinjiang Medical University, No.393, Xinyi Road, Urumqi, 830011, Xinjiang, People's Republic of China
| | - Hui Xiao
- College of Public Health, Xinjiang Medical University, Urumqi, 830054, People's Republic of China
| | - Juan Wen
- College of Basic Medical, Xinjiang Medical University, No.393, Xinyi Road, Urumqi, 830011, Xinjiang, People's Republic of China
| | - Zhan Liu
- College of HouBo, Xinjiang Medical University, Karamay, 834000, People's Republic of China
| | - Yi He
- College of HouBo, Xinjiang Medical University, Karamay, 834000, People's Republic of China
| | - Fang Yuan
- College of Basic Medical, Xinjiang Medical University, No.393, Xinyi Road, Urumqi, 830011, Xinjiang, People's Republic of China.
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Dravet-Gounot P, Morin C, Jacques S, Dumont F, Ely-Marius F, Vaiman D, Jarreau PH, Méhats C, Zana-Taïeb E. Lung microRNA deregulation associated with impaired alveolarization in rats after intrauterine growth restriction. PLoS One 2017; 12:e0190445. [PMID: 29287116 PMCID: PMC5747455 DOI: 10.1371/journal.pone.0190445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/14/2017] [Indexed: 12/14/2022] Open
Abstract
Intrauterine growth restriction (IUGR) was recently described as an independent risk factor of bronchopulmonary dysplasia, the main respiratory sequelae of preterm birth. We previously showed impaired alveolarization in rat pups born with IUGR induced by a low-protein diet (LPD) during gestation. We conducted a genome-wide analysis of gene expression and found the involvement of several pathways such as cell adhesion. Here, we describe our unbiased microRNA (miRNA) profiling by microarray assay and validation by qPCR at postnatal days 10 and 21 (P10 and P21) in lungs of rat pups with LPD-induced lung-alveolarization disorder after IUGR. We identified 13 miRNAs with more than two-fold differential expression between control lungs and LPD-induced IUGR lungs. Validated and predicted target genes of these miRNAs were related to “tissue repair” at P10 and “cellular communication regulation” at P21. We predicted the deregulation of several genes associated with these pathways. Especially, E2F3, a transcription factor involved in cell cycle control, was expressed in developing alveoli, and its mRNA and protein levels were significantly increased at P21 after IUGR. Hence, IUGR affects the expression of selected miRNAs during lung alveolarization. These results provide a basis for deciphering the mechanistic contributions of IUGR to impaired alveolarization.
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Affiliation(s)
- Pauline Dravet-Gounot
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Cécile Morin
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Sébastien Jacques
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Florent Dumont
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Fabiola Ely-Marius
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
| | - Daniel Vaiman
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
| | - Pierre-Henri Jarreau
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
| | - Céline Méhats
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Faculté de Médecine, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- * E-mail:
| | - Elodie Zana-Taïeb
- Université Paris Descartes, Faculté de Médecine, Paris, France
- AP-HP, Maternité Port Royal, Service de Médecine et Réanimation Néonatales, Paris, France
- DHU Risques et grossesse, Maternité Port-Royal, Paris, France
- Inserm U1141, Paris, France
- Premup, Paris, France
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Hartman W, Helan M, Smelter D, Sathish V, Thompson M, Pabelick CM, Johnson B, Prakash YS. Role of Hypoxia-Induced Brain Derived Neurotrophic Factor in Human Pulmonary Artery Smooth Muscle. PLoS One 2015; 10:e0129489. [PMID: 26192455 PMCID: PMC4507987 DOI: 10.1371/journal.pone.0129489] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 05/08/2015] [Indexed: 01/28/2023] Open
Abstract
Background Hypoxia effects on pulmonary artery structure and function are key to diseases such as pulmonary hypertension. Recent studies suggest that growth factors called neurotrophins, particularly brain-derived neurotrophic factor (BDNF), can influence lung structure and function, and their role in the pulmonary artery warrants further investigation. In this study, we examined the effect of hypoxia on BDNF in humans, and the influence of hypoxia-enhanced BDNF expression and signaling in human pulmonary artery smooth muscle cells (PASMCs). Methods and Results 48h of 1% hypoxia enhanced BDNF and TrkB expression, as well as release of BDNF. In arteries of patients with pulmonary hypertension, BDNF expression and release was higher at baseline. In isolated PASMCs, hypoxia-induced BDNF increased intracellular Ca2+ responses to serotonin: an effect altered by HIF1α inhibition or by neutralization of extracellular BDNF via chimeric TrkB-Fc. Enhanced BDNF/TrkB signaling increased PASMC survival and proliferation, and decreased apoptosis following hypoxia. Conclusions Enhanced expression and signaling of the BDNF-TrkB system in PASMCs is a potential mechanism by which hypoxia can promote changes in pulmonary artery structure and function. Accordingly, the BDNF-TrkB system could be a key player in the pathogenesis of hypoxia-induced pulmonary vascular diseases, and thus a potential target for therapy.
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Affiliation(s)
- William Hartman
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
- * E-mail:
| | - Martin Helan
- International Clinical Research Center, Department of Cardiovascular Diseases, St. Anne's University Hospital, Brno, Czech Republic
- Department of Anesthesiology and Intensive Care, St. Anne's University Hospital, Masaryk University, Brno, Czech Republic
| | - Dan Smelter
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
| | - Venkatachalem Sathish
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
| | - Michael Thompson
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
| | - Christina M. Pabelick
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
| | - Bruce Johnson
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
- Department of Internal Medicine, Division of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
| | - Y. S. Prakash
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, 55905, United States of America
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Saruta J, To M, Hayashi T, Kawashima R, Shimizu T, Kamata Y, Kato M, Takeuchi M, Tsukinoki K. Relationship between brain-derived neurotrophic factor and stress in saliva and salivary glands. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY 2014. [DOI: 10.1016/j.ajoms.2013.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Helan M, Aravamudan B, Hartman WR, Thompson MA, Johnson BD, Pabelick CM, Prakash Y. BDNF secretion by human pulmonary artery endothelial cells in response to hypoxia. J Mol Cell Cardiol 2014; 68:89-97. [PMID: 24462831 PMCID: PMC3977651 DOI: 10.1016/j.yjmcc.2014.01.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/24/2013] [Accepted: 01/14/2014] [Indexed: 12/31/2022]
Abstract
Within human pulmonary artery, neurotrophin growth factors [NTs; e.g. brain-derived neurotrophic factor (BDNF)] and their high-affinity receptors (tropomyosin-related kinase; Trk) and low-affinity receptors p75 neurotrophin receptor (p75NTR) have been reported, but their functional role is incompletely understood. We tested the hypothesis that BDNF is produced by human pulmonary artery endothelial cells (PAECs). In the context of hypoxia as a risk factor for pulmonary hypertension, we examined the effect of hypoxia on BDNF secretion and consequent autocrine effects on pulmonary endothelium. Initial ELISA analysis of circulating BDNF in 30 healthy human volunteers showed that 72 h exposure to high altitude (~11,000 ft, alveolar PO2 = 100 mmHg) results in higher BDNF compared to samples taken at sea level. Separately, in human PAECs exposed for 24h to normoxia vs. hypoxia (1-3% O2), ELISA of extracellular media showed increased BDNF levels. Furthermore, quantitative PCR of PAECs showed 3-fold enhancement of BDNF gene transcription with hypoxia. In PAECs, BDNF induced NO production (measured using an NO-sensitive fluorescent dye DAF2-DA) that was significantly higher under hypoxic conditions, an effect also noted with the TrkB agonist 7,8-DHF. Importantly, hypoxia-induced NO was blunted by neutralization of secreted BDNF using the chimeric TrkB-Fc. Both hypoxia and BDNF increased iNOS (but not eNOS) mRNA expression. In accordance, BDNF enhancement of NO in hypoxia was not blunted by 50 nM L-NAME (eNOS inhibition) but substantially lower with 100 μM L-NAME (eNOS and iNOS inhibition). Hypoxia and BDNF also induced expression of hypoxia inducible factor 1 alpha (HIF-1α), a subunit of the transcription factor HIF-1, and pharmacological inhibition of HIF-1 diminished hypoxia effects on BDNF expression and secretion, and NO production. These results indicate that human PAECs express and secrete BDNF in response to hypoxia via a HIF-1-regulated pathway.
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Affiliation(s)
- Martin Helan
- Department of Anesthesiology, Mayo Clinic, Rochester
- ICRC, International Clinical Research Center, Brno, Czech Republic
- Department of Anesthesiology and Intensive Care, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | | | - William R. Hartman
- Department of Anesthesiology, Mayo Clinic, Rochester
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester
| | | | | | - Christina M. Pabelick
- Department of Anesthesiology, Mayo Clinic, Rochester
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester
| | - Y.S. Prakash
- Department of Anesthesiology, Mayo Clinic, Rochester
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester
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Wollen EJ, Sejersted Y, Wright MS, Bik-Multanowski M, Madetko-Talowska A, Günther CC, Nygård S, Kwinta P, Pietrzyk JJ, Saugstad OD. Transcriptome profiling of the newborn mouse lung after hypoxia and reoxygenation: hyperoxic reoxygenation affects mTOR signaling pathway, DNA repair, and JNK-pathway regulation. Pediatr Res 2013; 74:536-44. [PMID: 23999071 DOI: 10.1038/pr.2013.140] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 04/01/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND The use of oxygen in acute treatment of asphyxiated term newborns is associated with increased mortality. It is unclear how hyperoxic reoxygenation after hypoxia affects transcriptional changes in the newborn lung. METHODS On postnatal day 7, C57BL/6 mice (n = 62) were randomized to 120-min hypoxia (fraction of inspired oxygen (FiO2) 0.08) or normoxia. The hypoxia group was further randomized to reoxygenation for 30 min with FiO2 0.21, 0.40, 0.60, or 1.00, and the normoxia group to FiO2 0.21 or 1.00. Transcriptome profiling was performed on homogenized lung tissue using the Affymetrix 750k expression array, and validation was carried out by real-time polymerase chain reaction and enzyme-linked immunosorbent assay. RESULTS The hypoxia-reoxygenation model induced hypoxia-inducible factor 1 (HIF-1) targets like Vegfc, Adm, and Aqp1. In total, ~70% of the significantly differentially expressed genes were detected in the two high hyperoxic groups (FiO2 0.60 and 1.00). Reoxygenation with 100% oxygen after hypoxia uniquely upregulated Gadd45g, Dusp1, Peg3, and Tgm2. Pathway analysis identified mammalian target of rapamycin (mTOR) signaling pathway, DNA repair, c-jun N-terminal kinase (JNK)-pathway regulation, and cell cycle after hyperoxic reoxygenation was applied. CONCLUSION Acute hypoxia induces HIF-1 targets independent of the reoxygenation regime applied. Hyperoxic reoxygenation affects pathways regulating cell growth and survival. DNA-damage-responsive genes are restricted to reoxygenation with 100% oxygen.
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Affiliation(s)
- Embjørg J Wollen
- Department of Pediatric Research, Women and Children's Division, Oslo University Hospital, Rikshospitalet, University of Oslo, Oslo, Norway
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Meuchel LW, Thompson MA, Cassivi SD, Pabelick CM, Prakash YS. Neurotrophins induce nitric oxide generation in human pulmonary artery endothelial cells. Cardiovasc Res 2011; 91:668-76. [PMID: 21498417 DOI: 10.1093/cvr/cvr107] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIMS Members of the growth factor family of neurotrophins [NTs; e.g. brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT3)] and their high-affinity receptors (tropomyosin-related kinase; Trk) and low-affinity receptors p75 neurotrophin receptor (p75NTR) have been localized to pulmonary artery (PA) in humans. However, their role is unclear. Based on previous findings of NTs and their receptors within the pulmonary endothelium, we tested the hypothesis that NTs induce nitric oxide (NO) production in pulmonary endothelial cells (ECs), thus contributing to vasodilation. METHODS AND RESULTS In human pulmonary artery ECs loaded with the NO-sensitive fluorescent dye diaminofluorescein-2, both BDNF and NT3 (100 pM, 1 nM, and 10 nM) acutely (<10 min) and substantially increased fluorescence levels in a concentration-dependent fashion (to levels comparable to that induced by 1 μM acetylcholine). NT-induced elevation of NO levels was blunted by the tyrosine kinase inhibitor K252a, the nitric oxide synthase (NOS) inhibitor N(G)-nitro-L-arginine methyl ester, the Ca(2+) chelator 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid, and the NO scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide. Suppression of TrkB or TrkC expression via siRNA as well as functional blockade of p75NTR prevented NT-induced NO elevation. Both BDNF and NT3 increased phosphorylation of Akt and endothelial NO synthase (eNOS). In endothelium-intact porcine PA rings, NTs increased cGMP and induced vasodilation in pre-contracted arteries. CONCLUSION These results indicate that NTs acutely modulate pulmonary endothelial NO production and contribute to relaxation of the pulmonary vasculature.
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Affiliation(s)
- Lucas W Meuchel
- Department of Physiology, Mayo Clinic College of Medicine, 4-184 W. Jos SMH, Rochester, MN 55905, USA
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