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Sublette ME, Daray FM, Ganança L, Shaikh SR. The role of polyunsaturated fatty acids in the neurobiology of major depressive disorder and suicide risk. Mol Psychiatry 2024; 29:269-286. [PMID: 37993501 DOI: 10.1038/s41380-023-02322-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 10/19/2023] [Accepted: 11/07/2023] [Indexed: 11/24/2023]
Abstract
Long-chain polyunsaturated fatty acids (LC-PUFAs) are obtained from diet or derived from essential shorter-chain fatty acids, and are crucial for brain development and functioning. Fundamentally, LC-PUFAs' neurobiological effects derive from their physicochemical characteristics, including length and double bond configuration, which differentiate LC-PUFA species and give rise to functional differences between n(omega)-3 and n-6 LC-PUFAs. LC-PUFA imbalances are implicated in psychiatric disorders, including major depression and suicide risk. Dietary intake and genetic variants in enzymes involved in biosynthesis of LC-PUFAs from shorter chain fatty acids influence LC-PUFA status. Domains impacted by LC-PUFAs include 1) cell signaling, 2) inflammation, and 3) bioenergetics. 1) As major constituents of lipid bilayers, LC-PUFAs are determinants of cell membrane properties of viscosity and order, affecting lipid rafts, which play a role in regulation of membrane-bound proteins involved in cell-cell signaling, including monoaminergic receptors and transporters. 2) The n-3:n-6 LC-PUFA balance profoundly influences inflammation. Generally, metabolic products of n-6 LC-PUFAs (eicosanoids) are pro-inflammatory, while those of n-3 LC-PUFAs (docosanoids) participate in the resolution of inflammation. Additionally, n-3 LC-PUFAs suppress microglial activation and the ensuing proinflammatory cascade. 3) N-3 LC-PUFAs in the inner mitochondrial membrane affect oxidative stress, suppressing production of and scavenging reactive oxygen species (ROS), with neuroprotective benefits. Until now, this wealth of knowledge about LC-PUFA biomechanisms has not been adequately tapped to develop translational studies of LC-PUFA clinical effects in humans. Future studies integrating neurobiological mechanisms with clinical outcomes may suggest ways to identify depressed individuals most likely to respond to n-3 LC-PUFA supplementation, and mechanistic research may generate new treatment strategies.
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Affiliation(s)
- M Elizabeth Sublette
- Department of Psychiatry, Columbia University, New York, NY, USA.
- Molecular Imaging & Neuropathology Area, New York State Psychiatric Institute, New York, NY, USA.
| | - Federico Manuel Daray
- University of Buenos Aires, School of Medicine, Institute of Pharmacology, Buenos Aires, Argentina
- National Scientific and Technical Research Council, Buenos Aires, Argentina
| | - Licínia Ganança
- Clínica Universitária de Psiquiatria e Psicologia Médica, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Departamento de Psiquiatria e Saúde Mental, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal
| | - Saame Raza Shaikh
- Nutritional Obesity Research Center, Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Oda H, Tanaka S, Shinohara M, Morimura Y, Yokoyama Y, Kayawake H, Yamada Y, Yutaka Y, Ohsumi A, Nakajima D, Hamaji M, Menju T, Date H. Specialized Proresolving Lipid Meditators Agonistic to Formyl Peptide Receptor Type 2 Attenuate Ischemia-reperfusion Injury in Rat Lung. Transplantation 2022; 106:1159-1169. [PMID: 34873128 DOI: 10.1097/tp.0000000000003987] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Lung ischemia-reperfusion injury (IRI) is a form of acute lung injury characterized by nonspecific alveolar damage and lung edema due to robust inflammation. Little is known about the roles of specialized proresolving lipid mediators (SPMs) in lung IRI. Therefore, we aimed to evaluate the dynamic changes in endogenous SPMs during the initiation and resolution of lung IRI and to determine the effects of SPM supplementation on lung IRI. METHODS We used a rat left hilar clamp model with 90 min of ischemia, followed by reperfusion. Dynamic changes in endogenous SPMs were evaluated using liquid chromatography-tandem mass spectrometry. RESULTS Endogenous SPMs in the left lung showed a decreasing trend after 1 h of reperfusion. Oxygenation improved between 3 and 7 d following reperfusion; however, the level of endogenous SPMs remained low compared with that in the naïve lung. Among SPM receptors, only formyl peptide receptor type 2 (ALX/FPR2) gene expression in the left lung was increased 3 h after reperfusion, and the inflammatory cells were immunohistochemically positive for ALX/FPR2. Administration of aspirin-triggered (AT) resolvin D1 (AT-RvD1) and AT lipoxin A4 (AT-LXA4), which are agonistic to ALX/FPR2, immediately after reperfusion improved lung function, reduced inflammatory cytokine levels, attenuated lung edema, and decreased neutrophil infiltration 3 h after reperfusion. The effects of AT-RvD1 and AT-LXA4 were not observed after pretreatment with the ALX/FPR2 antagonist. CONCLUSIONS The level of intrapulmonary endogenous SPMs decreased during lung IRI process and the administration of AT-RvD1 and AT-LXA4 prevented the exacerbation of lung injury via ALX/FPR2.
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Affiliation(s)
- Hiromi Oda
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Satona Tanaka
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masakazu Shinohara
- The Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Epidemiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuki Morimura
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuhei Yokoyama
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hidenao Kayawake
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoshito Yamada
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yojiro Yutaka
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akihiro Ohsumi
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Daisuke Nakajima
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Elmasry MF, Hassan E, Rashed LA, Abdel Halim DM. Role of resolvin D1 in psoriasis before and after narrowband ultraviolet B phototherapy: A case-control study. Dermatol Ther 2021; 34:e14879. [PMID: 33586174 DOI: 10.1111/dth.14879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/12/2020] [Accepted: 02/13/2021] [Indexed: 01/01/2023]
Abstract
Resolvin D1 (RvD1) is an endogenous lipid mediator that originated from docosahexaenoic acid that stimulates a bimodal mechanism in the anti-inflammatory activity in addition to regulation of the inflammatory reaction. The study aimed at assessing the tissue level of RvD1 in psoriasis to study its role in the etiopathogenesis of psoriasis, studying the action of NB-UVB on the level of resolvin D1 in psoriasis, and raising the possibility of using resolvin D1 as a new therapy for psoriasis in the future. This case-control study included 20 psoriasis patients and 20 healthy controls. Patients took narrowband ultraviolet B (NB-UVB) for 36 sessions. Skin biopsies were taken before and after treatment from patients and from controls to assess the expression of RvD1 by a quantitative real-time polymerase chain reaction. Our findings revealed a statistically significant difference (P < .001) between psoriasis patients (either before or after treatment) and controls with lower levels of RvD1 in psoriasis patients. On comparing the RvD1 levels in psoriasis patients before and after treatment, a statistically significant increase was detected after treatment (P < .001). Tissue RvD1 levels in psoriasis patients were lower than healthy controls and increased after NB-UVB treatment in psoriasis patients. Thus, it is suggested that RvD1 might have a role in the etiopathogenesis of psoriasis. Moreover, the significantly up-regulated tissue levels of RvD1 in patients after treatment with NB-UVB highlighted a novel mechanism of phototherapy-mediated response in psoriasis by up-regulating RvD1 level.
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Affiliation(s)
- Maha Fathy Elmasry
- Dermatology Department, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Eman Hassan
- Kobry ElKobba Military Hospital, Cairo, Egypt
| | - Laila Ahmed Rashed
- Medical Biochemistry and Molecular Biology Department, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, Egypt
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Petrillo F, Trotta MC, Bucolo C, Hermenean A, Petrillo A, Maisto R, Pieretti G, Pietropaolo M, Ferraraccio F, Gagliano C, Galdiero M, D'Amico M. Resolvin D1 attenuates the inflammatory process in mouse model of LPS-induced keratitis. J Cell Mol Med 2020; 24:12298-12307. [PMID: 33058526 PMCID: PMC7686975 DOI: 10.1111/jcmm.15633] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 05/20/2020] [Accepted: 05/29/2020] [Indexed: 01/29/2023] Open
Abstract
The aim of this study was to investigate the effects of the lipid mediator Resolvin D1 in experimental keratitis. C57BL/6J mice were injected with lipopolysaccharide (2 µg/eye), and after 24 hours, the corneal damage was assessed. Clinical score was quantified, and corneal inflammatory biomarkers were detected by immunohistochemistry. A robust accumulation of sub‐epithelial macrophages and polymorphonuclear leucocytes, chemokine (C‐X‐C motif) ligand 1 (also known as keratinocyte‐derived chemokine), interleukin‐10 and promoters of apoptosis was also observed in lipopolysaccharide‐treated mice. Formyl peptide receptor 2 corneal expression was also assessed. The corneal stroma treated with lipopolysaccharide was characterized by presence of macrophages of M1‐like subtype and immature fibroblastic cells, marked with Ki67, not fully differentiated in fibroblasts. Indeed, the staining of the cornea with anti‐vimentin antibodies, a marker of differentiated myofibroblasts, was very faint. Resolvin D1 attenuated all the inflammatory parameters assessed in the present study, except for IL‐10. In conclusion, the data presented here seem to be consistent with the hypothesis that Resolvin D1 protected the cornea from the lipopolysaccharide‐induced keratitis by acting on several inflammatory components of this damage, pivoted by Formyl peptide receptor 2 (FPR2) activation and macrophages‐leucocytes activity.
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Affiliation(s)
| | - Maria Consiglia Trotta
- Department of Experimental Medicine, University of Campania 'L.Vanvitelli', Naples, Italy
| | - Claudio Bucolo
- Department of Biomedical and Biotechnological Sciences, School of Medicine, University of Catania, Catania, Italy
| | - Anca Hermenean
- Institute of Life Science, Vasile Goldis Western University, Arad, Romania
| | - Arianna Petrillo
- Department of Experimental Medicine, University of Campania 'L.Vanvitelli', Naples, Italy
| | - Rosa Maisto
- Department of Experimental Medicine, University of Campania 'L.Vanvitelli', Naples, Italy
| | - Gorizio Pieretti
- Multidisciplinary Department of Surgical and Dental Specialties, University of Campania'L. Vanvitelli', Naples, Italy
| | - Michela Pietropaolo
- General Directorate of the University Polyclinic 'L. Vanvitelli', Naples, Italy
| | - Franca Ferraraccio
- Department of Clinical, Public and Preventive Medicine, University of Campania 'L. Vanvitelli', Naples, Italy
| | - Caterina Gagliano
- Eye Clinic, University of Catania and Santa Marta Hospital, Catania, Italy
| | - Marilena Galdiero
- Department of Experimental Medicine, University of Campania 'L.Vanvitelli', Naples, Italy
| | - Michele D'Amico
- Department of Experimental Medicine, University of Campania 'L.Vanvitelli', Naples, Italy
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Joffre C, Dinel AL, Chataigner M, Pallet V, Layé S. n-3 Polyunsaturated Fatty Acids and Their Derivates Reduce Neuroinflammation during Aging. Nutrients 2020; 12:nu12030647. [PMID: 32121189 PMCID: PMC7146513 DOI: 10.3390/nu12030647] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 12/15/2022] Open
Abstract
: Aging is associated to cognitive decline, which can lead to loss of life quality, personal suffering, and ultimately neurodegenerative diseases. Neuroinflammation is one of the mechanisms explaining the loss of cognitive functions. Indeed, aging is associated to the activation of inflammatory signaling pathways, which can be targeted by specific nutrients with anti-inflammatory effects. Dietary n-3 polyunsaturated fatty acids (PUFAs) are particularly attractive as they are present in the brain, possess immunomodulatory properties, and are precursors of lipid derivates named specialized pro-resolving mediators (SPM). SPMs are crucially involved in the resolution of inflammation that is modified during aging, resulting in chronic inflammation. In this review, we first examine the effect of aging on neuroinflammation and then evaluate the potential beneficial effect of n-3 PUFA as precursors of bioactive derivates, particularly during aging, on the resolution of inflammation. Lastly, we highlight evidence supporting a role of n-3 PUFA during aging.
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Affiliation(s)
- Corinne Joffre
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
- Correspondence:
| | - Anne-Laure Dinel
- NutriBrain Research and Technology Transfer, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France
| | - Mathilde Chataigner
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
- Abyss Ingredients, 56850 Caudan, France
| | - Véronique Pallet
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
| | - Sophie Layé
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, 146 rue Léo Saignat, 33076 Bordeaux, France; (M.C.); (V.P.); (S.L.)
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da Silva Sergio LP, Mencalha AL, de Souza da Fonseca A, de Paoli F. DNA repair and genomic stability in lungs affected by acute injury. Biomed Pharmacother 2019; 119:109412. [PMID: 31514069 PMCID: PMC9170240 DOI: 10.1016/j.biopha.2019.109412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/26/2019] [Accepted: 08/28/2019] [Indexed: 12/28/2022] Open
Abstract
Acute pulmonary injury, or acute respiratory distress syndrome, has a high incidence in elderly individuals and high mortality in its most severe degree, becoming a challenge to public health due to pathophysiological complications and increased economic burden. Acute pulmonary injury can develop from sepsis, septic shock, and pancreatitis causing reduction of alveolar airspace due to hyperinflammatory response. Oxidative stress acts directly on the maintenance of inflammation, resulting in tissue injury, as well as inducing DNA damages. Once the DNA is damaged, enzymatic DNA repair mechanisms act on lesions in order to maintain genomic stability and, consequently, contribute to cell viability and homeostasis. Although palliative treatment based on mechanical ventilation and antibiotic using have a kind of efficacy, therapies based on modulation of DNA repair and genomic stability could be effective for improving repair and recovery of lung tissue in patients with acute pulmonary injury.
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Affiliation(s)
- Luiz Philippe da Silva Sergio
- Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Boulevard Vinte e Oito de Setembro, 87, Vila Isabel, Rio de Janeiro, 20551030, Brazil.
| | - Andre Luiz Mencalha
- Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Boulevard Vinte e Oito de Setembro, 87, Vila Isabel, Rio de Janeiro, 20551030, Brazil
| | - Adenilson de Souza da Fonseca
- Departamento de Biofísica e Biometria, Instituto de Biologia Roberto Alcantara Gomes, Universidade do Estado do Rio de Janeiro, Boulevard Vinte e Oito de Setembro, 87, Vila Isabel, Rio de Janeiro, 20551030, Brazil; Departamento de Ciências Fisiológicas, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro, Rua Frei Caneca, 94, Rio de Janeiro, 20211040, Brazil; Centro de Ciências da Saúde, Centro Universitário Serra dos Órgãos, Avenida Alberto Torres, 111, Teresópolis, Rio de Janeiro, 25964004, Brazil
| | - Flavia de Paoli
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer - s/n, Campus Universitário, São Pedro, Juiz de Fora, Minas Gerais, 36036900, Brazil
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7
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Joffre C, Rey C, Layé S. N-3 Polyunsaturated Fatty Acids and the Resolution of Neuroinflammation. Front Pharmacol 2019; 10:1022. [PMID: 31607902 PMCID: PMC6755339 DOI: 10.3389/fphar.2019.01022] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 08/12/2019] [Indexed: 12/22/2022] Open
Abstract
In the past few decades, as a result of their anti-inflammatory properties, n-3 long chain polyunsaturated fatty acids (n-3 LC-PUFAs), have gained greater importance in the regulation of inflammation, especially in the central nervous system (in this case known as neuroinflammation). If sustained, neuroinflammation is a common denominator of neurological disorders, including Alzheimer’s disease and major depression, and of aging. Hence, limiting neuroinflammation is a real strategy for neuroinflammatory disease therapy and treatment. Recent data show that n-3 LC-PUFAs exert anti-inflammatory properties in part through the synthesis of specialized pro-resolving mediators (SPMs) such as resolvins, maresins and protectins. These SPMs are crucially involved in the resolution of inflammation. They could be good candidates to resolve brain inflammation and to contribute to neuroprotective functions and could lead to novel therapeutics for brain inflammatory diseases. This review presents an overview 1) of brain n-3 LC-PUFAs as precursors of SPMs with an emphasis on the effect of n-3 PUFAs on neuroinflammation, 2) of the formation and action of SPMs in the brain and their biological roles, and the possible regulation of their synthesis by environmental factors such as inflammation and nutrition and, in particular, PUFA consumption.
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Affiliation(s)
- Corinne Joffre
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux, France.,Université de Bordeaux 2, Bordeaux, France
| | - Charlotte Rey
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux, France.,Université de Bordeaux 2, Bordeaux, France.,ITERG, Nutrition Health and Lipid Biochemistry Department, Canéjan, France
| | - Sophie Layé
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, Bordeaux, France.,Université de Bordeaux 2, Bordeaux, France
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8
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Low-power laser alters mRNA levels from DNA repair genes in acute lung injury induced by sepsis in Wistar rats. Lasers Med Sci 2018; 34:157-168. [DOI: 10.1007/s10103-018-2656-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/30/2018] [Indexed: 01/08/2023]
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9
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Tao L, Cao F, Xu G, Xie H, Zhang M, Zhang C. Mogroside IIIE Attenuates LPS-Induced Acute Lung Injury in Mice Partly Through Regulation of the TLR4/MAPK/NF-κB Axis via AMPK Activation. Phytother Res 2017; 31:1097-1106. [DOI: 10.1002/ptr.5833] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/24/2017] [Accepted: 04/19/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Lijun Tao
- Research Department of Pharmacognosy; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Fengyan Cao
- Research Department of Pharmacognosy; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Gonghao Xu
- Research Department of Pharmacognosy; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Haifeng Xie
- Chengdu Biopurity Chengdu Biopurity Phytochemicals Ltd; Chengdu 611131 People's Republic of China
| | - Mian Zhang
- Research Department of Pharmacognosy; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Chaofeng Zhang
- Research Department of Pharmacognosy; China Pharmaceutical University; Nanjing 211198 People's Republic of China
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Jouan Y, Si-Tahar M, Guillon A. Immunité de la muqueuse respiratoire : physiologie et implications en réanimation. MEDECINE INTENSIVE REANIMATION 2016. [DOI: 10.1007/s13546-016-1245-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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Yu J, Wang Y, Li Z, Dong S, Wang D, Gong L, Shi J, Zhang Y, Liu D, Mu R. Effect of Heme Oxygenase-1 on Mitofusin-1 protein in LPS-induced ALI/ARDS in rats. Sci Rep 2016; 6:36530. [PMID: 27830717 PMCID: PMC5103207 DOI: 10.1038/srep36530] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 10/18/2016] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) is a common and important oxidative stress in the lung. Mitochondrial fusion responds to the normal morphology and function of cells and is finely regulated by mitochondrial fusion proteins, such as mitofusin-1 protein (Mfn1), mitofusin-2 protein (Mfn2) and optical atrophy 1 (OPA1). Additionally, Mfn1 has been identified as the most important protein in mitochondrial fusion. Heme oxygenase-1 (HO-1) is a stress-inducible protein that plays a critical role in protecting against oxidative stress. However, whether the protection of HO-1 is related to mitochondrial fusion is still a question. Thus, our in vitro and in vivo experiments aimed to identify the relationship between HO-1 and Mfn1. Here, we used Hemin and ZnPP-IX as treatments in an in vivo experiment. Then, HO-1 and Mfn1 were measured using RT-PCR and Western blotting. Supernatants were analyzed for MDA, SOD, and ROS. Our results implied that HO-1 upregulation suppressed oxidative stress induced by LPS, and the possible mechanism could be associated with Mfn1 and the PI3K/Akt pathway.
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Affiliation(s)
- Jianbo Yu
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Ying Wang
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Zhen Li
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Shuan Dong
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Dan Wang
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Lirong Gong
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Jia Shi
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Yuan Zhang
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
| | - Daquan Liu
- Institute of Acute Abdominal Diseases of Integrated Traditional Chinese and Western Medicine, Tianjin, 300100, China
| | - Rui Mu
- Department of Anesthesiology, Tianjin Nan Kai Hospital, Tianjin Medical University, Tianjin, 300100, China
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Phloretin attenuates LPS-induced acute lung injury in mice via modulation of the NF-κB and MAPK pathways. Int Immunopharmacol 2016; 40:98-105. [PMID: 27588909 DOI: 10.1016/j.intimp.2016.08.035] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 08/11/2016] [Accepted: 08/26/2016] [Indexed: 12/29/2022]
Abstract
Phloretin, which can be isolated from apple trees, has demonstrable anti-inflammatory and anti-oxidant effects in macrophages. We previously reported that phloretin could inhibit the inflammatory response and reduce intercellular adhesion molecule 1 (ICAM-1) expression in interleukin (IL)-1β-activated human lung epithelial cells. In the present study we now evaluate whether phloretin exposure could ameliorate lipopolysaccharide (LPS)-induced acute lung injury in mice. Intra-peritoneal injections of phloretin were administered to mice for 7 consecutive days, prior to the induction of lung injury by intra-tracheal administration of LPS. Our subsequent analyses demonstrated that phloretin could significantly suppress LPS-induced neutrophil infiltration of lung tissue, and reduce the levels of IL-6 and tumor necrosis factor (TNF)-α in serum and bronchoalveolar lavage fluid. We also found that phloretin modulated myeloperoxidase activity and superoxide dismutase activity, with decreased gene expression levels for chemokines, proinflammatory cytokines, and ICAM-1 in inflamed lung tissue. Phloretin also significantly reduced the phosphorylation of nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPK), thus limiting the inflammatory response, while promoting expression of heme oxygenase (HO)-1 and nuclear factor erythroid 2-related factor 2, both of which are cytoprotective. Our findings suggest that, mechanistically, phloretin attenuates the inflammatory and oxidative stress pathways that accompany lung injury in mice via blockade of the NF-κB and MAPK pathways.
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Li Z, Xiao X, Yang M. Asiatic Acid Inhibits Lipopolysaccharide-Induced Acute Lung Injury in Mice. Inflammation 2016; 39:1642-8. [DOI: 10.1007/s10753-016-0398-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Beneficial effects of vitamin C treatment on pregnant rats exposed to formaldehyde: Reversal of immunosuppression in the offspring. Toxicol Appl Pharmacol 2016; 300:77-81. [DOI: 10.1016/j.taap.2016.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/25/2016] [Accepted: 03/21/2016] [Indexed: 01/15/2023]
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Abstract
The immune response comprises not only pro-inflammatory and anti-inflammatory pathways but also pro-resolution mechanisms that serve to balance the need of the host to target microbial pathogens while preventing excess inflammation and bystander tissue damage. Specialized pro-resolving mediators (SPMs) are enzymatically derived from essential fatty acids to serve as a novel class of immunoresolvents that limit acute responses and orchestrate the clearance of tissue pathogens, dying cells and debris from the battlefield of infectious inflammation. SPMs are composed of lipoxins, E-series and D-series resolvins, protectins and maresins. Individual members of the SPM family serve as agonists at cognate receptors to induce cell-type specific responses. Important regulatory roles for SPMs have been uncovered in host responses to several microorganisms, including bacterial, viral, fungal and parasitic pathogens. SPMs also promote the resolution of non-infectious inflammation and tissue injury. Defects in host SPM pathways contribute to the development of chronic inflammatory diseases. With the capacity to enhance host defence and modulate inflammation, SPMs represent a promising translational approach to enlist host resolution programmes for the treatment of infection and excess inflammation.
Here, the authors detail our current understanding of specialized pro-resolving mediators (SPMs), a family of endogenous mediators that have important roles in promoting the resolution of inflammation. With a focus on the lungs, they discuss the contribution of SPMs to infectious and chronic inflammatory diseases and their emerging therapeutic potential. Specialized pro-resolving mediators (SPMs) are enzymatically derived from essential fatty acids and have important roles in orchestrating the resolution of tissue inflammation — that is, catabasis. Host responses to tissue infection elicit acute inflammation in an attempt to control invading pathogens. SPMs are lipid mediators that are part of a larger family of pro-resolving molecules, which includes proteins and gases, that together restrain inflammation and resolve the infection. These immunoresolvents are distinct from immunosuppressive molecules as they not only dampen inflammation but also promote host defence. Here, we focus primarily on SPMs and their roles in lung infection and inflammation to illustrate the potent actions these mediators play in restoring tissue homeostasis after an infection.
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Abstract
Acute respiratory disease syndrome (ARDS) is a common complication of critical illness, associated with significant morbidity, prolonged intensive care unit (ICU) and hospital stay, and increased mortality. Inflammation plays a central role in ARDS, with inflammatory eicosanoid mediators produced from the ω-6 fatty acid arachidonic acid, such as leukotriene B4, being involved. The ω-3 fatty acids found in fish oil exert anti-inflammatory effects, including decreasing production of inflammatory eicosanoids from arachidonic acid. The ω-3 fatty acids are effective in models relevant to ARDS. Several randomized controlled trials of enteral formulas rich in ω-3 fatty acids, often in combination with other bioactive substances, have been conducted in patients with ARDS. Four of these trials reported marked clinical benefits, 2 reported no effect, and 1 reported a negative impact. A systematic review and meta-analysis of these 7 trials identified no overall effect on ventilator-free days or on ICU-free days. There was a small reduction in ICU length of stay and no overall effect on mortality. However, the authors formally identified that trials that used high fat in both treatment and control groups showed a significant reduction in mortality, while trials that used a high, or higher, fat treatment and a low-fat control group showed a trend toward an increase in mortality. It is concluded that differences in outcome reported among these studies largely relate to the relative fat contents of the treatment and control formulas. Further, it is concluded that high-fat enteral formulas should not be used in this patient group.
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Affiliation(s)
- Philip C Calder
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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