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Wang D, Tediashvili G, Kim D, Hu X, Luikart H, Renne T, Tian A, Nadeau KC, Velden J, Schrepfer S, Khush KK. Leukotriene B4: A potential mediator and biomarker for cardiac allograft vasculopathy. J Heart Lung Transplant 2024; 43:1336-1347. [PMID: 38670297 DOI: 10.1016/j.healun.2024.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 04/06/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Cardiac allograft vasculopathy (CAV) remains the leading cause of long-term graft failure and mortality after heart transplantation. Effective preventive and treatment options are not available to date, largely because underlying mechanisms remain poorly understood. We studied the potential role of leukotriene B4 (LTB4), an inflammatory lipid mediator, in the development of CAV. METHODS We used an established preclinical rat CAV model to study the role of LTB4 in CAV. We performed syngeneic and allogeneic orthotopic aortic transplantation, after which neointimal proliferation was quantified. Animals were then treated with Bestatin, an inhibitor of LTB4 synthesis, or vehicle control for 30 days post-transplant, and evidence of graft CAV was determined by histology. We also measured serial LTB4 levels in a cohort of 28 human heart transplant recipients with CAV, 17 matched transplant controls without CAV, and 20 healthy nontransplant controls. RESULTS We showed that infiltration of the arterial wall with macrophages leads to neointimal thickening and a rise in serum LTB4 levels in our rat model of CAV. Inhibition of LTB4 production with the drug Bestatin prevents development of neointimal hyperplasia, suggesting that Bestatin may be effective therapy for CAV prevention. In a parallel study of heart transplant recipients, we found nonsignificantly elevated plasma LTB4 levels in patients with CAV, compared to patients without CAV and healthy, nontransplant controls. CONCLUSIONS This study provides key evidence supporting the role of the inflammatory cytokine LTB4 as an important mediator of CAV development and provides preliminary data suggesting the clinical benefit of Bestatin for CAV prevention.
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Affiliation(s)
- Dong Wang
- Transplant and Stem Cell Immunobiology (TSI) Lab, Department of Surgery, Division of Cardiothoracic Surgery, University of California, San Francisco, San Francisco, California
| | - Grigol Tediashvili
- Transplant and Stem Cell Immunobiology (TSI) Lab, Department of Surgery, Division of Cardiothoracic Surgery, University of California, San Francisco, San Francisco, California
| | - Daniel Kim
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Xiaomeng Hu
- Transplant and Stem Cell Immunobiology (TSI) Lab, Department of Surgery, Division of Cardiothoracic Surgery, University of California, San Francisco, San Francisco, California
| | - Helen Luikart
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Thomas Renne
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland; Center for Thrombosis and Hemostasis (CTH), Johannes Gutenberg University Medical Center, Mainz, Germany
| | - Amy Tian
- Pulmonary and Critical Medicine, Stanford University and Palo Alto Veteran Institute of Research (PAVIR), Stanford, California
| | - Kari C Nadeau
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | | | - Sonja Schrepfer
- Transplant and Stem Cell Immunobiology (TSI) Lab, Department of Surgery, Division of Cardiothoracic Surgery, University of California, San Francisco, San Francisco, California
| | - Kiran K Khush
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California.
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2
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Montague C, Holt Y, Vlok M, Dhanraj P, Boodhoo K, Maartens M, Buthelezi K, Niesler CU, van de Vyver M. Combined therapeutic use of umbilical cord blood serum and amniotic membrane in diabetic wounds. Biochimie 2024:S0300-9084(24)00171-8. [PMID: 39043358 DOI: 10.1016/j.biochi.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/21/2024] [Accepted: 07/18/2024] [Indexed: 07/25/2024]
Abstract
Diabetic wounds are hard-to-heal due to complex multifactorial dysregulation within the micro-environment, necessitating the development of novel regenerative approaches to stimulate healing. This study investigated whether the combined therapeutic application of two novel cellular tissue products, namely a decellularized collagen-rich amniotic membrane (AmR) and growth factor-rich umbilical cord blood serum (UCBS) could have a positive synergistic effect on long-term healing outcomes by stimulating both superficial wound closure and wound bed regeneration. Full thickness excisional wounds were induced on obese diabetic mice (B6.Cg-lepob/J, ob/ob, n = 23) and treated with either: 1) Standard wound care (control); 2) UCBS; 3) AmR or 4) UCBS + AmR. Macroscopic wound closure was assessed on days 0, 3, 7, 10 and 14 post wounding. To determine the potential impact on wound recurrence, endpoint analysis was performed to determine both the overall quality of healing histologically as well as the molecular state of the wounds on day 14 via proteomic analysis. The data demonstrated the presence of both healers and non-healers. Re-epithelization took place in the healers of all treatment groups, but underlying tissue regeneration was far more pronounced following application of the combined treatment (UCBS + AmR), suggesting improved quality of healing and potentially a reduced change of recurrence long term. In non-healers, wounds failed to heal due to excessive slough formation and a reduction in LTB4 expression, suggesting impaired antimicrobial activity. Care should thus be taken since the cellular tissue product therapy could pose an increased risk for infection in some patients.
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Affiliation(s)
| | - Y Holt
- Next Biosciences, Midrand, South Africa
| | - M Vlok
- Central Analytical Facility, Stellenbosch University, Cape Town, South Africa
| | - P Dhanraj
- Experimental Medicine Research Group, Department of Medicine, Faculty of Medicine & Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - K Boodhoo
- Experimental Medicine Research Group, Department of Medicine, Faculty of Medicine & Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - M Maartens
- Experimental Medicine Research Group, Department of Medicine, Faculty of Medicine & Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - C U Niesler
- Next Biosciences, Midrand, South Africa; Discipline of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (UKZN), Pietermaritzburg, South Africa
| | - M van de Vyver
- Experimental Medicine Research Group, Department of Medicine, Faculty of Medicine & Health Sciences, Stellenbosch University, Cape Town, South Africa.
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3
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Khan H, Abu-Raisi M, Feasson M, Shaikh F, Saposnik G, Mamdani M, Qadura M. Current Prognostic Biomarkers for Abdominal Aortic Aneurysm: A Comprehensive Scoping Review of the Literature. Biomolecules 2024; 14:661. [PMID: 38927064 PMCID: PMC11201473 DOI: 10.3390/biom14060661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Abdominal aortic aneurysm (AAA) is a progressive dilatation of the aorta that can lead to aortic rupture. The pathophysiology of the disease is not well characterized but is known to be caused by the general breakdown of the extracellular matrix within the aortic wall. In this comprehensive literature review, all current research on proteins that have been investigated for their potential prognostic capabilities in patients with AAA was included. A total of 45 proteins were found to be potential prognostic biomarkers for AAA, predicting incidence of AAA, AAA rupture, AAA growth, endoleak, and post-surgical mortality. The 45 proteins fell into the following seven general categories based on their primary function: (1) cardiovascular health, (2) hemostasis, (3) transport proteins, (4) inflammation and immunity, (5) kidney function, (6) cellular structure, (7) and hormones and growth factors. This is the most up-to-date literature review on current prognostic markers for AAA and their functions. This review outlines the wide pathophysiological processes that are implicated in AAA disease progression.
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Affiliation(s)
- Hamzah Khan
- Division of Vascular Surgery, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Mohamed Abu-Raisi
- Division of Vascular Surgery, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Manon Feasson
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Farah Shaikh
- Division of Vascular Surgery, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Gustavo Saposnik
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
- Division of Neurology, Department of Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada
| | - Muhammad Mamdani
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
| | - Mohammad Qadura
- Division of Vascular Surgery, St. Michael’s Hospital, Toronto, ON M5B 1W8, Canada
- Li Ka Shing Knowledge Institute, St Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1W8, Canada
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
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4
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Kahnt AS, Häfner AK, Steinhilber D. The role of human 5-Lipoxygenase (5-LO) in carcinogenesis - a question of canonical and non-canonical functions. Oncogene 2024; 43:1319-1327. [PMID: 38575760 PMCID: PMC11065698 DOI: 10.1038/s41388-024-03016-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/21/2024] [Accepted: 03/21/2024] [Indexed: 04/06/2024]
Abstract
5-Lipoxygenase (5-LO), a fatty acid oxygenase, is the central enzyme in leukotriene (LT) biosynthesis, potent arachidonic acid-derived lipid mediators released by innate immune cells, that control inflammatory and allergic responses. In addition, through interaction with 12- and 15-lipoxgenases, the enzyme is involved in the formation of omega-3 fatty acid-based oxylipins, which are thought to be involved in the resolution of inflammation. The expression of 5-LO is frequently deregulated in solid and liquid tumors, and there is strong evidence that the enzyme plays an important role in carcinogenesis. However, global inhibition of LT formation and signaling has not yet shown the desired success in clinical trials. Curiously, the release of 5-LO-derived lipid mediators from tumor cells is often low, and the exact mechanism by which 5-LO influences tumor cell function is poorly understood. Recent data now show that in addition to releasing oxylipins, 5-LO can also influence gene expression in a lipid mediator-independent manner. These non-canonical functions, including modulation of miRNA processing and transcription factor shuttling, most likely influence cancer cell function and the tumor microenvironment and might explain the low clinical efficacy of pharmacological strategies that previously only targeted oxylipin formation and signaling by 5-LO. This review summarizes the canonical and non-canonical functions of 5-LO with a particular focus on tumorigenesis, highlights unresolved issues, and suggests future research directions.
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Affiliation(s)
- Astrid S Kahnt
- Institute of Pharmaceutical Chemistry, Goethe University, Max-von-Laue-Straße 9, 60438, Frankfurt/Main, Germany.
| | - Ann-Kathrin Häfner
- Institute of Pharmaceutical Chemistry, Goethe University, Max-von-Laue-Straße 9, 60438, Frankfurt/Main, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry, Goethe University, Max-von-Laue-Straße 9, 60438, Frankfurt/Main, Germany
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Alvarez I, Ducatez M, Guo Y, Lion A, Widgren A, Dubourdeau M, Baillif V, Saias L, Zohari S, Bergquist J, Meyer G, Valarcher JF, Hägglund S. Proteomic and Lipidomic Profiling of Calves Experimentally Co-Infected with Influenza D Virus and Mycoplasma bovis: Insights into the Host-Pathogen Interactions. Viruses 2024; 16:361. [PMID: 38543727 PMCID: PMC10975297 DOI: 10.3390/v16030361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 05/23/2024] Open
Abstract
The role of Influenza D virus (IDV) in bovine respiratory disease remains unclear. An in vivo experiment resulted in increased clinical signs, lesions, and pathogen replication in calves co-infected with IDV and Mycoplasma bovis (M. bovis), compared to single-infected calves. The present study aimed to elucidate the host-pathogen interactions and profile the kinetics of lipid mediators in the airways of these calves. Bronchoalveolar lavage (BAL) samples collected at 2 days post-infection (dpi) were used for proteomic analyses by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Additionally, lipidomic analyses were performed by LC-MS/MS on BAL samples collected at 2, 7 and 14 dpi. Whereas M. bovis induced the expression of proteins involved in fibrin formation, IDV co-infection counteracted this coagulation mechanism and downregulated other acute-phase response proteins, such as complement component 4 (C4) and plasminogen (PLG). The reduced inflammatory response against M. bovis likely resulted in increased M. bovis replication and delayed M. bovis clearance, which led to a significantly increased abundance of oxylipids in co-infected calves. The identified induced oxylipids mainly derived from arachidonic acid; were likely oxidized by COX-1, COX-2, and LOX-5; and peaked at 7 dpi. This paper presents the first characterization of BAL proteome and lipid mediator kinetics in response to IDV and M. bovis infection in cattle and raises hypotheses regarding how IDV acts as a co-pathogen in bovine respiratory disease.
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Affiliation(s)
- Ignacio Alvarez
- Division of Ruminant Medicine, Department of Clinical Sciences, Swedish University of Agriculture Sciences, 8 Almas Allé, 75007 Uppsala, Sweden (J.-F.V.); (S.H.)
| | - Mariette Ducatez
- IHAP, Université de Tolouse, INRAE, ENVT, 31076 Toulouse, France
| | - Yongzhi Guo
- Division of Ruminant Medicine, Department of Clinical Sciences, Swedish University of Agriculture Sciences, 8 Almas Allé, 75007 Uppsala, Sweden (J.-F.V.); (S.H.)
| | - Adrien Lion
- IHAP, Université de Tolouse, INRAE, ENVT, 31076 Toulouse, France
| | - Anna Widgren
- Department of Chemistry-BMC, Analytical Chemistry and Neurochemistry, Uppsala University, Husargatan 3, 75124 Uppsala, Sweden; (A.W.); (J.B.)
| | | | | | - Laure Saias
- Ambiotis SAS, 3 Rue des Satellites, 31400 Toulouse, France
| | - Siamak Zohari
- Department of Microbiology, Swedish Veterinary Agency, Ullsvägen 2B, 75189 Uppsala, Sweden;
| | - Jonas Bergquist
- Department of Chemistry-BMC, Analytical Chemistry and Neurochemistry, Uppsala University, Husargatan 3, 75124 Uppsala, Sweden; (A.W.); (J.B.)
- Department of Animal Biosciences, Swedish University of Agricultural Sciences, Ulls väg 26, 75007 Uppsala, Sweden
| | - Gilles Meyer
- IHAP, Université de Tolouse, INRAE, ENVT, 31076 Toulouse, France
| | - Jean-Francois Valarcher
- Division of Ruminant Medicine, Department of Clinical Sciences, Swedish University of Agriculture Sciences, 8 Almas Allé, 75007 Uppsala, Sweden (J.-F.V.); (S.H.)
| | - Sara Hägglund
- Division of Ruminant Medicine, Department of Clinical Sciences, Swedish University of Agriculture Sciences, 8 Almas Allé, 75007 Uppsala, Sweden (J.-F.V.); (S.H.)
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Tibbs TN, Donoghue LJ, Buzzelli AA, Misumi I, DeMonia M, Ferris MT, Kelada SN, Whitmire JK. Mice with FVB-derived sequence on chromosome 17 succumb to disseminated virus infection due to aberrant NK cell and T cell responses. iScience 2023; 26:108348. [PMID: 38026197 PMCID: PMC10665959 DOI: 10.1016/j.isci.2023.108348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 09/19/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Zoonotic arenavirus infections can result in viral hemorrhagic disease, characterized by platelet loss, petechia, and multi-organ injury. The mechanisms governing these outcomes are likely impacted by virus strain and infection dose, as well as an individual's genetic background and immune constitution. To better understand the processes leading to severe pathogenesis, we compared two strains of inbred mice, C57BL/6J (B6) and FVB/NJ (FVB), that have diametrically opposed outcomes during disseminated lymphocytic choriomeningitis virus (LCMV) infection. Infection caused minimal pathogenesis in B6 mice, whereas FVB mice developed acute hepatitis and perished due, in part, to aberrant NK cell and T cell responses. Susceptible mice showed an outgrowth of cytolytic CD4+ T cells and loss of Treg cells. B6 congenic mice with the FVB allele at a 25Mb locus on chromosome 17 recapitulated FVB pathogenesis upon infection. A locus containing a limited number of variants in immune-related genes greatly impacts survival during infection.
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Affiliation(s)
- Taylor N. Tibbs
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Lauren J. Donoghue
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Ashlyn A. Buzzelli
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Ichiro Misumi
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Maggie DeMonia
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Martin T. Ferris
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Samir N.P. Kelada
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Jason K. Whitmire
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
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Chen HC, Chang WC, Chuang JY, Chang KY, Liou JP, Hsu TI. The complex role of eicosanoids in the brain: Implications for brain tumor development and therapeutic opportunities. Biochim Biophys Acta Rev Cancer 2023; 1878:188957. [PMID: 37488051 DOI: 10.1016/j.bbcan.2023.188957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 07/26/2023]
Abstract
Eicosanoids are a family of bioactive lipids that play diverse roles in the normal physiology of the brain, including neuronal signaling, synaptic plasticity, and regulation of cerebral blood flow. In the brain, eicosanoids are primarily derived from arachidonic acid, which is released from membrane phospholipids in response to various stimuli. Prostaglandins (PGs) and leukotrienes (LTs) are the major classes of eicosanoids produced in the brain, and they act through specific receptors to modulate various physiological and pathological processes. Dysregulation of eicosanoids has been implicated in the development and progression of brain tumors, including glioblastoma (GBM), meningioma, and medulloblastoma. Eicosanoids have been shown to promote tumor cell proliferation, migration, invasion, angiogenesis, and resistance to therapy. Particularly, PGE2 promotes GBM cell survival and resistance to chemotherapy. Understanding the role of eicosanoids in brain tumors can inform the development of diagnostic and prognostic biomarkers, as well as therapeutic strategies that target eicosanoid pathways. Cyclooxygenase (COX)-2 and 5-lipoxygenase (LOX) inhibitors have been shown to reduce the growth and invasiveness of GBM cells. Moreover, eicosanoids have immunomodulatory effects that can impact the immune response to brain tumors. Understanding the role of eicosanoids in the immune response to brain tumors can inform the development of immunotherapy approaches for these tumors. Overall, the complex role of eicosanoids in the brain underscores the importance of further research to elucidate their functions in normal physiology and disease, and highlights the potential for developing novel therapeutic approaches that target eicosanoid pathways in brain tumors.
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Affiliation(s)
- Hsien-Chung Chen
- Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei 110, Taiwan; Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei 110, Taiwan; TMU Research Center of Neuroscience, Taipei Medical University, Taipei 110, Taiwan
| | - Wen-Chang Chang
- TMU Research Center of Neuroscience, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Jian-Ying Chuang
- Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei 110, Taiwan; TMU Research Center of Neuroscience, Taipei Medical University, Taipei 110, Taiwan; International Master Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan; TMU Research Center of Cancer Translational Medicine, Taipei 110, Taiwan; Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taiwan
| | - Kwang-Yu Chang
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan
| | - Jing-Ping Liou
- Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taiwan; School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei, Taiwan; TMU Research Center for Drug Discovery, Taipei Medical University, Taipei, Taiwan
| | - Tsung-I Hsu
- Ph.D. Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei 110, Taiwan; TMU Research Center of Neuroscience, Taipei Medical University, Taipei 110, Taiwan; International Master Program in Medical Neuroscience, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan; TMU Research Center of Cancer Translational Medicine, Taipei 110, Taiwan; Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taiwan.
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8
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Petean IBF, Silva-Sousa AC, da Silva RAB, Lucisano MP, da Silva LAB, de Castro GPA, Sousa-Neto MD, Faccioli LH, Paula-Silva FWG. Systemic inhibition of 5-lipoxygenase by MK-886 exacerbates apical periodontitis bone loss in a mouse model. BMC Oral Health 2023; 23:11. [PMID: 36624436 PMCID: PMC9830793 DOI: 10.1186/s12903-023-02712-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND To investigate if 5-LO selective inhibitor (MK-886) could be used for systemic treatment of experimentally induced apical periodontitis in a mouse model. METHODS Twenty-four C57BL/6 mice were used. After coronal opening, a solution containing Escherichia coli LPS (1.0 µg/µL) was inoculated into the root canals of the lower and upper right first molars (n = 72 teeth). After 30 days apical periodontitis was established, and the animals were treated with MK-886 (5 mg/kg), a 5-LO inhibitor, for 7 and 14 days. The tissues were removed for histopathological and histometric analyses, evaluation of osteoclast number and gene expression for receptor activator of nuclear factor kappa-B (Tnfrsf11a), receptor activator of nuclear factor kappa-B ligand (Tnfsf11), osteoprotegerin (Tnfrsf11b), tartrate-resistant acid phosphatase (Acp5), matrix metalloproteinase-9 (Mmp9), cathepsin K (Ctsk) and calcitonin receptor (Calcr). Statistical data analysis was performed using Kruskal Wallis followed by Dunn's tests (α = 0.05). RESULTS Administration of MK-886 for 7 days exerted no effect on apical periodontitis progression compared to LPS inoculation without treatment (p = 0.3549), while treatment for 14 days exacerbated bone loss (p < 0.0001). Administration of MK-886 enhanced osteoclastogenesis signaling and osteoclast formation within 7 days (p = 0.0005), but exerted no effect at 14 days (p > 0.9999). After 7 days of treatment, MK-886 induced mRNA expression for Acp5 (p = 0.0001), Calcr (p = 0.0003), Mmp9 (p = 0.0005) and Ctsk (p = 0.0008), however no effect in those gene expression was observed after 14 days (p > 0.05). CONCLUSION Systemic treatment with MK-886 exacerbated LPS-induced apical periodontitis in a mouse model.
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Affiliation(s)
- Igor Bassi Ferreira Petean
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Alice Corrêa Silva-Sousa
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Raquel Assed Bezerra da Silva
- grid.11899.380000 0004 1937 0722Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo Brazil
| | - Marília Pacífico Lucisano
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Léa Assed Bezerra da Silva
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Guilherme Piedade Assed de Castro
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Manoel Damião Sousa-Neto
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil
| | - Lúcia Helena Faccioli
- grid.11899.380000 0004 1937 0722Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo Brazil
| | - Francisco Wanderley Garcia Paula-Silva
- grid.11899.380000 0004 1937 0722School of Dentistry of Ribeirão Preto, University of São Paulo, Avenida do Café, s/n, Ribeirão Preto, São Paulo Brazil ,grid.11899.380000 0004 1937 0722Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo Brazil
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9
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Wang Y, Zheng W, Deng W, Fang H, Hu H, Zhu H, Yao W. Effect of fermented heat-treated rice bran on performance and possible role of intestinal microbiota in laying hens. Front Microbiol 2023; 14:1144567. [PMID: 37180244 PMCID: PMC10172586 DOI: 10.3389/fmicb.2023.1144567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/10/2023] [Indexed: 05/16/2023] Open
Abstract
Rice bran is a high-quality and renewable livestock feed material rich in nutrients and bioactive substances. To investigate the effects of dietary supplementation with fermented heat-treated rice bran on the performance, apparent digestibility of nutrients, cecal microbiota and metabolites in laying hens, a total of 128 18-week-old Hy-Line brown layers were randomly assigned to four treatment groups: 2.5% HRB (basal diet contained 2.5% heat-treated rice bran), 5.0% HRB (5.0% heat-treated rice bran), 2.5% FHRB (2.5% fermented heat-treated rice bran), 5.0% FHRB (5.0% fermented heat-treated rice bran). Results showed that FHRB supplementation significantly increased the average daily feed intake (ADFI) during 25-28 weeks, and improved apparent digestibility of dry matter (DM), crude protein (CP), ether extract (EE) and crude fiber (CF) in laying hens. Moreover, feeding 5.0% of HRB and FHRB resulted higher egg production (EP) and average egg weight (AEW) during the feeding period, and decreased the feed conversion ratio (FCR) during 21 to 28 weeks. The alpha and beta diversity indices indicated that FHRB altered the cecal microbiota. In particular, dietary supplementation with FHRB significantly increased the relative abundances of Lachnospira and Clostridium. Compared with the 2.5% level of supplementation, supplementing 5.0% HRB and 5.0% FHRB increased the relative abundances of Firmicutes, Ruminococcus and Peptococcus, and lowered the relative abundance of Actinobacteria. Furthermore, dietary FHRB supplementation significantly increased the concentration of short-chain fatty acids in cecum and changed the overall metabolome. The results of correlation analysis showed a close interaction between cecal microbiota, metabolites and apparent digestibility of nutrients. Taken together, we revealed that FHRB supplementation can induce characteristic structural and metabolic changes in the cecal microbiome, which could potentially promote nutrient digestion and absorption, and improve the production performance of laying hens.
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Affiliation(s)
- Yamei Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Weijiang Zheng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Wei Deng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hua Fang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Heng Hu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - He Zhu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Wen Yao
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
- Key Lab of Animal Physiology and Biochemistry, Ministry of Agriculture and Rural Affairs of the People’s Republic of China, Nanjing Agricultural University, Nanjing, Jiangsu, China
- *Correspondence: Wen Yao,
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10
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Xu F, Zhou X, Lin L, Xu J, Feng Y, He Y, Hao H. BML-111, the agonist of lipoxin A4, suppresses epithelial-mesenchymal transition and migration of MCF-7 cells via regulating the lipoxygenase pathway. Int J Immunopathol Pharmacol 2023; 37:3946320231223826. [PMID: 38134963 DOI: 10.1177/03946320231223826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023] Open
Abstract
Introduction: Aberrant epithelial-mesenchymal transition (EMT) and migration frequently occur during tumour progression. BML-111, an analogue of lipoxin A4, has been implicated in inflammation in cancer research. Methods: 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, western blot, Reverse Transcription Polymerase Chain Reaction (RT-PCR), transwell assay, immunofluorescence, and immunohistochemistry were conducted in this study. Results: In vitro experiments revealed that BML-111 inhibited EMT and migration in CoCl2-stimulated MCF-7 cells. These effects were achieved by inhibiting MMP-2 and MMP-9, which are downregulated by 5-lipoxygenase (5-LOX). Moreover, BML-111 inhibited EMT and migration of breast cancer cells in BALB/c nude mice inoculated with MCF-7 cells. Conclusion: Our results suggest that BML-111 may be a potential therapeutic drug for breast cancer and that blocking the 5-LOX pathway could be a possible approach for mining effective drug targets.
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Affiliation(s)
- Fen Xu
- Department of General Medicine, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiaoyan Zhou
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang, China
| | - Lan Lin
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jing Xu
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yu Feng
- Department of Pathology, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuanqiao He
- Department of Laboratory Animal Science, Medical College of Nanchang University, Nanchang, China
| | - Hua Hao
- Department of Pathology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
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11
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Dufrusine B, Valentinuzzi S, Bibbò S, Damiani V, Lanuti P, Pieragostino D, Del Boccio P, D’Alessandro E, Rabottini A, Berghella A, Allocati N, Falasca K, Ucciferri C, Mucedola F, Di Perna M, Martino L, Vecchiet J, De Laurenzi V, Dainese E. Iron Dyshomeostasis in COVID-19: Biomarkers Reveal a Functional Link to 5-Lipoxygenase Activation. Int J Mol Sci 2022; 24:15. [PMID: 36613462 PMCID: PMC9819889 DOI: 10.3390/ijms24010015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) is characterized by a broad spectrum of clinical symptoms. After acute infection, some subjects develop a post-COVID-19 syndrome known as long-COVID. This study aims to recognize the molecular and functional mechanisms that occur in COVID-19 and long-COVID patients and identify useful biomarkers for the management of patients with COVID-19 and long-COVID. Here, we profiled the response to COVID-19 by performing a proteomic analysis of lymphocytes isolated from patients. We identified significant changes in proteins involved in iron metabolism using different biochemical analyses, considering ceruloplasmin (Cp), transferrin (Tf), hemopexin (HPX), lipocalin 2 (LCN2), and superoxide dismutase 1 (SOD1). Moreover, our results show an activation of 5-lipoxygenase (5-LOX) in COVID-19 and in long-COVID possibly through an iron-dependent post-translational mechanism. Furthermore, this work defines leukotriene B4 (LTB4) and lipocalin 2 (LCN2) as possible markers of COVID-19 and long-COVID and suggests novel opportunities for prevention and treatment.
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Affiliation(s)
- Beatrice Dufrusine
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Silvia Valentinuzzi
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Sandra Bibbò
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Verena Damiani
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Paola Lanuti
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Damiana Pieragostino
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Piero Del Boccio
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Ersilia D’Alessandro
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Alberto Rabottini
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Alessandro Berghella
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Nerino Allocati
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Katia Falasca
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Claudio Ucciferri
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Francesco Mucedola
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Marco Di Perna
- Pneumology Department, “SS Annunziata” Hospital, 66100 Chieti, Italy
| | - Laura Martino
- Pneumology Department, “SS Annunziata” Hospital, 66100 Chieti, Italy
| | - Jacopo Vecchiet
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Vincenzo De Laurenzi
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Enrico Dainese
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
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Reyes AWB, Kim H, Huy TXN, Nguyen TT, Min W, Lee D, Hur J, Lee JH, Kim S. The In Vitro and In Vivo Effect of Lipoxygenase Pathway Inhibitors Nordihydroguaiaretic Acid and Its Derivative Tetra- O-methyl Nordihydroguaiaretic Acid against Brucella abortus 544. J Microbiol Biotechnol 2022; 32:1126-1133. [PMID: 36039381 PMCID: PMC9628969 DOI: 10.4014/jmb.2207.07026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/09/2022] [Accepted: 08/25/2022] [Indexed: 12/15/2022]
Abstract
This study investigated the contribution of lipoxygenase (LOX) inhibitors, nordihydroguaiaretic acid (NDGA), tetra-O-methyl nordihydroguaiaretic acid (M4N) and zileuton (ZIL), and thromboxane A2 (TXA2) inhibitor 4,5-diphenylimidazole (DPI) in the proliferation of Brucella abortus infection. None of the compounds affected the uptake of Brucella into the macrophages. We determined the effect of neutralizing leukotriene B4 (LTB4) receptor and showed that the uptake of the bacteria was inhibited at 30 min post-infection. M4N treatment attenuated intracellular survival of Brucella at 2 h post-incubation but it was not observed in the succeeding time points. DPI treatment showed reduced survival of Brucella at 24 h post-incubation while blocking LTB4 receptor was observed to have a lower intracellular growth at 48 h post-incubation suggesting different action of the inhibitors in the course of the survival of Brucella within the cells. Reduced proliferation of the bacteria in the spleens of mice was observed in animals treated with ZIL or DPI. Increased serum cytokine level of TNF-α and MCP-1 was observed in mice treated with M4N or ZIL while a lower IFN-γ level in ZIL-treated mice and a higher IL-12 serum level in DPI-treated mice were observed at 7 d post-infection. At 14 d post-infection, ZIL-treated mice displayed reduced serum level of IL-12 and IL-10. Overall, inhibition of 5-LOX or TXA2 or a combination therapy promises a potential alternative therapy against B. abortus infection. Furthermore, strong ligands for LTB4 receptor could also be a good candidate for the control of Brucella infection.
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Affiliation(s)
- Alisha Wehdnesday Bernardo Reyes
- Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College, Laguna 4031, Philippines
| | - Heejin Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Tran Xuan Ngoc Huy
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Trang Thi Nguyen
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Wongi Min
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dongho Lee
- College of Medicine, Inje University, Busan, 47392, Republic of Korea
| | - Jin Hur
- College of Veterinary Medicine, Chonbuk National University, Iksan 54596, Republic of Korea
| | - John Hwa Lee
- College of Veterinary Medicine, Chonbuk National University, Iksan 54596, Republic of Korea
| | - Suk Kim
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea,Corresponding author Phone +82-55-772-2359 Fax: +82-55-772-2349 E-mail:
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13
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Españo E, Kim J, Kim JK. Utilization of Aloe Compounds in Combatting Viral Diseases. Pharmaceuticals (Basel) 2022; 15:ph15050599. [PMID: 35631425 PMCID: PMC9145703 DOI: 10.3390/ph15050599] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/04/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022] Open
Abstract
Plants contain underutilized resources of compounds that can be employed to combat viral diseases. Aloe vera (L.) Burm. f. (syn. Aloe barbadensis Mill.) has a long history of use in traditional medicine, and A. vera extracts have been reported to possess a huge breadth of pharmacological activities. Here, we discuss the potential of A. vera compounds as antivirals and immunomodulators for the treatment of viral diseases. In particular, we highlight the use of aloe emodin and acemannan as lead compounds that should be considered for further development in the management and prevention of viral diseases. Given the immunomodulatory capacity of A. vera compounds, especially those found in Aloe gel, we also put forward the idea that these compounds should be considered as adjuvants for viral vaccines. Lastly, we present some of the current limitations to the clinical applications of compounds from Aloe, especially from A. vera.
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14
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Callegari IOM, Oliveira AG. The Role of LTB4 in Obesity-Induced Insulin Resistance Development: An Overview. Front Endocrinol (Lausanne) 2022; 13:848006. [PMID: 35392132 PMCID: PMC8981522 DOI: 10.3389/fendo.2022.848006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/01/2022] [Indexed: 01/10/2023] Open
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15
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Salazar C, Galaz M, Ojeda N, Marshall SH. Expression of ssa-miR-155 during ISAV infection in vitro: Putative role as a modulator of the immune response in Salmo salar. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 122:104109. [PMID: 33930457 DOI: 10.1016/j.dci.2021.104109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Multiple cellular components are involved in pathogen-host interaction during viral infection; in this context, the role of miRNAs have become highly relevant. We assessed the expression of selected miRNAs during an in vitro infection of a Salmo salar cell line with Infectious Salmon Anemia Virus (ISAV), the causative agent of a severe disease by the same name. Salmon orthologs for miRNAs that regulate antiviral responses were measured using RT-qPCR in an in vitro time-course assay. We observed a modulation of specific miRNAs expression, where ssa-miR-155-5p was differentially over-expressed. Using in silico analysis, we identified the putative mRNA targets for ssa-miR-155-5p, finding a high prevalence of hosts immune response-related genes; moreover, several mRNAs involved in the viral infective process were also identified as targets for this miRNA. Our results suggest a relevant role for miR-155-5p in Salmo salar during an ISAV infection as a regulator of the immune response to the virus.
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Affiliation(s)
- Carolina Salazar
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Martín Galaz
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Nicolás Ojeda
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Sergio H Marshall
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile.
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16
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Kronstadt SM, Pottash AE, Levy D, Wang S, Chao W, Jay SM. Therapeutic Potential of Extracellular Vesicles for Sepsis Treatment. ADVANCED THERAPEUTICS 2021; 4:2000259. [PMID: 34423113 PMCID: PMC8378673 DOI: 10.1002/adtp.202000259] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Sepsis is a deadly condition lacking a specific treatment despite decades of research. This has prompted the exploration of new approaches, with extracellular vesicles (EVs) emerging as a focal area. EVs are nanosized, cell-derived particles that transport bioactive components (i.e., proteins, DNA, and RNA) between cells, enabling both normal physiological functions and disease progression depending on context. In particular, EVs have been identified as critical mediators of sepsis pathophysiology. However, EVs are also thought to constitute the biologically active component of cell-based therapies and have demonstrated anti-inflammatory, anti-apoptotic, and immunomodulatory effects in sepsis models. The dual nature of EVs in sepsis is explored here, discussing their endogenous roles and highlighting their therapeutic properties and potential. Related to the latter component, prior studies involving EVs from mesenchymal stem/stromal cells (MSCs) and other sources are discussed and emerging producer cells that could play important roles in future EV-based sepsis therapies are identified. Further, how methodologies could impact therapeutic development toward sepsis treatment to enhance and control EV potency is described.
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Affiliation(s)
- Stephanie M Kronstadt
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Alex E Pottash
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Daniel Levy
- Fischell Department of Bioengineering, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
| | - Sheng Wang
- Translational Research Program, Department of Anesthesiology and Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Wei Chao
- Translational Research Program, Department of Anesthesiology and Center for Shock Trauma and Anesthesiology Research, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Steven M Jay
- Fischell Department of Bioengineering and Program in Molecular and, Cell Biology, University of Maryland, 3102 A. James Clark Hall, College Park, MD 20742, USA
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17
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Leyva‐Grado V, Pugach P, Sadeghi‐Latefi N. A novel anti-inflammatory treatment for bradykinin-induced sore throat or pharyngitis. Immun Inflamm Dis 2021; 9:1321-1335. [PMID: 34153179 PMCID: PMC8589389 DOI: 10.1002/iid3.479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Often thought of as a minor health concern, sore throat or pharyngitis is an important public health issue. It is one of the most common symptoms of upper respiratory diseases including COVID-19 and is a leading cause of physician visits and antibiotic prescriptions. However, few over-the-counter medications are proven to heal sore throat inflammation. METHODS Adenocarcinomic human alveolar basal epithelial cells (A549 cells) and three dimensional organotypic human respiratory tissues were used to study inflammation and various treatment effects on respiratory epithelia. The cells and tissues were studied both in the presence and absence of bradykinin, one of the first inflammatory mediators of pharyngitis. Inflammation was measured by analyzing the levels of prostaglandin E2 (PGE2), interleukin 8 (IL-8), and leukotriene B4 (LTB4), transepithelial electrical resistance (TEER), and lactate dehydrogenase (LDH) release. Tissue morphology was analyzed by immunohistochemistry. RESULTS In studying pharyngitis using organotypic human respiratory tissue stimulated with bradykinin, we saw an increase in PGE2 and interleukin-8 (IL-8) in response to bradykinin. Acetyl salicylic acid (ASA), a nonspecific COX inhibitor, was able to mitigate a bradykinin-induced increase in PGE2 in our studies. However, ASA was inflammatory above its therapeutic window, increasing the levels of PGE2 and IL-8 above those seen with bradykinin stimulation alone. We describe a novel, scientifically validated treatment for sore throat, that contains a low dose of ASA and other anti-inflammatory ingredients. CONCLUSION This study elucidates the complex mechanisms involved in healing pharyngitis, an inflammatory condition of the upper respiratory epithelia. An ASA-based formula (Biovanta) mitigated bradykinin-induced inflammation more strongly than ASA alone in organotypic human respiratory tissues. Surprisingly, we found that many of the most common over the counter sore throat therapies exacerbate inflammation and IL-8 in organotypic human respiratory tissues, suggesting these common treatments may increase the likelihood of further respiratory complications.
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Affiliation(s)
| | - Pavel Pugach
- Applied Biological LaboratoriesBrooklynNew YorkUSA
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18
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Al-Kuraishy HM, Al-Gareeb AI, Almulaiky YQ, Cruz-Martins N, El-Saber Batiha G. Role of leukotriene pathway and montelukast in pulmonary and extrapulmonary manifestations of Covid-19: The enigmatic entity. Eur J Pharmacol 2021; 904:174196. [PMID: 34004207 PMCID: PMC8123523 DOI: 10.1016/j.ejphar.2021.174196] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/28/2021] [Accepted: 05/12/2021] [Indexed: 02/06/2023]
Abstract
Severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), the responsible agent for the coronavirus disease 2019 (Covid-19), has its entry point through interaction with angiotensin converting enzyme 2 (ACE2) receptors, highly expressed in lung type II alveolar cells and other tissues, like heart, pancreas, brain, and vascular endothelium. This review aimed to elucidate the potential role of leukotrienes (LTs) in the pathogenesis and clinical presentation of SARS-CoV-2 infection, and to reveal the critical role of LT pathway receptor antagonists and inhibitors in Covid-19 management. A literature search was done in PubMed, Scopus, Web of Science and Google Scholar databases to find the potential role of montelukast and other LT inhibitors in the management of pulmonary and extra-pulmonary manifestations triggered by SARS-CoV-2. Data obtained so far underline that pulmonary and extra-pulmonary manifestations in Covid-19 are attributed to a direct effect of SARS-CoV-2 in expressed ACE2 receptors or indirectly through NF-κB dependent induction of a cytokine storm. Montelukast can ameliorate extra-pulmonary manifestations in Covid-19 either directly through blocking of Cys-LTRs in different organs or indirectly through inhibition of the NF-κB signaling pathway.
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Affiliation(s)
- Hayder M Al-Kuraishy
- Department of Clinical Pharmacology and Medicine, College of Medicine, ALmustansiriyia University, Baghdad, Iraq.
| | - Ali I Al-Gareeb
- Department of Clinical Pharmacology and Medicine, College of Medicine, ALmustansiriyia University, Baghdad, Iraq.
| | - Yaaser Q Almulaiky
- University of Jeddah, College of Sciences and Arts at Khulis, Department of Chemistry, Jeddah, Saudi Arabia.
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal; Institute for Research and Innovation in Health (i3S), University of Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal; Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences, University of Porto, Portugal.
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, AlBeheira, Egypt.
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19
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Han B, Zhang YY, Ye ZQ, Xiao Y, Rasouli J, Wu WC, Ye SM, Guo XY, Zhu L, Rostami A, Wang LB, Zhang Y, Li X. Montelukast alleviates inflammation in experimental autoimmune encephalomyelitis by altering Th17 differentiation in a mouse model. Immunology 2021; 163:185-200. [PMID: 33480040 DOI: 10.1111/imm.13308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 12/23/2020] [Accepted: 01/04/2021] [Indexed: 12/25/2022] Open
Abstract
Montelukast is a leukotriene receptor antagonist that is known to prevent allergic rhinitis and asthma. Blocking the Cysteinyl leukotriene receptor (CysLTR1), one of the primary receptors of leukotrienes, has been demonstrated to be efficacious in ameliorating experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS), through disrupting chemotaxis of infiltrating T cells. However, the role of CysLTR1 in the pathogenesis of MS is not well understood. Here, we show that MS patients had higher expression of CysLTR1 in the circulation and central nervous system (CNS). The majority of CD4+ T cells expressed CysLTR1 in MS lesions. Among T-cell subsets, Th17 cells had the highest expression of CysLTR1, and blocking CysLTR1 signalling abrogated their development in vitro. Inhibition of CysLTR1 by montelukast suppressed EAE development in both a prophylactic and therapeutic manner and inhibited myelin loss in EAE mice. Similarly, the in vivo results showed that montelukast inhibited Th17 response in EAE mice and that Th17 cells treated with montelukast had reduced encephalitogenic in adoptive EAE. Our findings strongly suggest that targeting Th17 response by inhibiting CysLTR1 signalling could be a promising therapeutic strategy for the treatment of MS and CNS inflammatory diseases.
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Affiliation(s)
- Bing Han
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yan-Yan Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Ze-Qing Ye
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yun Xiao
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Javad Rasouli
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Wen-Cheng Wu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Su-Min Ye
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Xin-Yue Guo
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Lin Zhu
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | | | - Li-Bin Wang
- The General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yuan Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Xing Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China
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20
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He R, Chen Y, Cai Q. The role of the LTB4-BLT1 axis in health and disease. Pharmacol Res 2020; 158:104857. [PMID: 32439596 DOI: 10.1016/j.phrs.2020.104857] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 04/03/2020] [Accepted: 04/20/2020] [Indexed: 12/16/2022]
Abstract
Leukotriene B4 (LTB4) is a major type of lipid mediator that is rapidly generated from arachidonic acid through sequential action of 5-lipoxygenase (5-LO), 5-lipoxygenase-activating protein (FLAP) and LTA4 hydrolase (LTA4H) in response to various stimuli. LTB4 is well known to be a chemoattractant for leukocytes, particularly neutrophils, via interaction with its high-affinity receptor BLT1. Extensive attention has been paid to the role of the LTB4-BLT1 axis in acute and chronic inflammatory diseases, such as infectious diseases, allergy, autoimmune diseases, and metabolic disease via mediating recruitment and/or activation of different types of inflammatory cells depending on different stages or the nature of inflammatory response. Recent studies also demonstrated that LTB4 acts on non-immune cells via BLT1 to initiate and/or amplify pathological inflammation in various tissues. In addition, emerging evidence reveals a complex role of the LTB4-BLT1 axis in cancer, either tumor-inhibitory or tumor-promoting, depending on the different target cells. In this review, we summarize both established understanding and the most recent progress in our knowledge about the LTB4-BLT1 axis in host defense, inflammatory diseases and cancer.
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Affiliation(s)
- Rui He
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China.
| | - Yu Chen
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
| | - Qian Cai
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China
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21
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Paula-Silva FWG, Ribeiro-Santos FR, Petean IBF, Manfrin Arnez MF, Almeida-Junior LAD, Carvalho FKD, Silva LABD, Faccioli LH. Root canal contamination or exposure to lipopolysaccharide differentially modulate prostaglandin E 2 and leukotriene B 4 signaling in apical periodontitis. J Appl Oral Sci 2020; 28:e20190699. [PMID: 32401938 PMCID: PMC7213784 DOI: 10.1590/1678-7757-2019-0699] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 02/28/2020] [Indexed: 12/18/2022] Open
Abstract
Purpose To evaluate the kinetics of apical periodontitis development
in vivo
, induced either by contamination of the root canals by microorganisms from the oral cavity or by inoculation of bacterial lipopolysaccharide (LPS) and the regulation of major enzymes and receptors involved in the arachidonic acid metabolism. Methodology Apical periodontitis was induced in C57BL6 mice (n=96), by root canal exposure to oral cavity (n=48 teeth) or inoculation of LPS (10 µL of a suspension of 0.1 µg/µL) from
E. coli
into the root canals (n= 48 teeth). Healthy teeth were used as control (n=48 teeth). After 7, 14, 21 and 28 days the animals were euthanized and tissues removed for histopathological and qRT-PCR analyses. Histological analysis data were analyzed using two-way ANOVA followed by Sidak’s test, and qRT-PCR data using two-way ANOVA followed by Tukey’s test (α=0.05). Results Contamination by microorganisms led to the development of apical periodontitis, characterized by the recruitment of inflammatory cells and bone tissue resorption, whereas inoculation of LPS induced inflammatory cells recruitment without bone resorption. Both stimuli induced mRNA expression for cyclooxygenase-2 and 5-lipoxygenase enzymes. Expression of prostaglandin E 2 and leukotriene B 4 cell surface receptors were more stimulated by LPS. Regarding nuclear peroxisome proliferator-activated receptors (PPAR), oral contamination induced the synthesis of mRNA for PPARδ, differently from inoculation of LPS, that induced PPARα and PPARγ expression. Conclusions Contamination of the root canals by microorganisms from oral cavity induced the development of apical periodontitis differently than by inoculation with LPS, characterized by less bone loss than the first model. Regardless of the model used, it was found a local increase in the synthesis of mRNA for the enzymes 5-lipoxygenase and cyclooxygenase-2 of the arachidonic acid metabolism, as well as in the surface and nuclear receptors for the lipid mediators prostaglandin E2 and leukotriene B4.
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Affiliation(s)
| | - Fernanda Regina Ribeiro-Santos
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Igor Bassi Ferreira Petean
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Maya Fernanda Manfrin Arnez
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | | | - Fabrício Kitazono de Carvalho
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Léa Assed Bezerra da Silva
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - Lúcia Helena Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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22
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Paula-Silva FWG, Arnez MFM, Petean IBF, Almeida-Junior LA, da Silva RAB, da Silva LAB, Faccioli LH. Effects of 5-lipoxygenase gene disruption on inflammation, osteoclastogenesis and bone resorption in polymicrobial apical periodontitis. Arch Oral Biol 2020; 112:104670. [DOI: 10.1016/j.archoralbio.2020.104670] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/23/2019] [Accepted: 01/27/2020] [Indexed: 01/18/2023]
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23
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Poirier SJ, Boudreau LH, Flamand N, Surette ME. LPS induces ALOX5 promoter activation and 5-lipoxygenase expression in human monocytic cells. Prostaglandins Leukot Essent Fatty Acids 2020; 154:102078. [PMID: 32120263 DOI: 10.1016/j.plefa.2020.102078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 11/24/2022]
Abstract
5-lipoxygenase (5-LO), coded by the ALOX5 gene, is expressed in leukocytes and catalyzes the formation of leukotrienes, pro-inflammatory lipid mediators. Leukotrienes are central to immune responses, but are also involved in inflammatory disorders and 5-LO expression is associated with leukemia stem cell survival. It is therefore important to understand mechanisms that control 5-LO expression. This study investigated the control of 5-LO expression and leukotriene biosynthesis following the maturation of human monocytic cells. MonoMac-1 (MM1) and THP-1 cells were incubated for up to 72 h with or without LPS and TGF-β. LPS, but not TGF-β, increased CD14 expression in both MM1 and THP-1 cells. Incubation with LPS (100 ng/ml) and TGF-β (1 ng/ml) synergistically increased the capacity of MM1 cells to produce 5-LO products from undetectable levels to 40±5 pmol/106 cells. 5-LO product biosynthesis in THP-1 cells increased 25-fold. A synergistic effect of LPS and TGF-β was measured with increases in 5-LO mRNA of 54- and 13-fold in MM1 and THP-1 cells, respectively. 5-LO protein expression increased significantly in both MM1 and THP-1 cells. ALOX5 promoter activity was significantly elevated >2-fold in both cell lines following LPS treatment, but TGF-β was without effect. The main 5-LO products were cysteinyl-leukotrienes, however LPS and TGF-β did not impact on the capacity of the cells to metabolize leukotriene A4. Overall, this study demonstrates that receptor-mediated stimulation of MM1 and THP-1 cells by LPS is associated with increased 5-LO expression. This represents a new mechanism by which leukotriene biosynthesis can be modulated by pathological agents.
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Affiliation(s)
- Samuel J Poirier
- Département de chimie et biochimie, Université de Moncton, Moncton, NB, E1A 3E9, Canada; Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Département de médecine, Faculté de médecine, Université Laval, Québec City, QC, G1V 4G5, Canada
| | - Luc H Boudreau
- Département de chimie et biochimie, Université de Moncton, Moncton, NB, E1A 3E9, Canada
| | - Nicolas Flamand
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval, Département de médecine, Faculté de médecine, Université Laval, Québec City, QC, G1V 4G5, Canada
| | - Marc E Surette
- Département de chimie et biochimie, Université de Moncton, Moncton, NB, E1A 3E9, Canada.
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24
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Moreira V, Gutiérrez JM, Lomonte B, Vinolo MAR, Curi R, Lambeau G, Teixeira C. 12-HETE is a regulator of PGE 2 production via COX-2 expression induced by a snake venom group IIA phospholipase A 2 in isolated peritoneal macrophages. Chem Biol Interact 2019; 317:108903. [PMID: 31811862 DOI: 10.1016/j.cbi.2019.108903] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/03/2019] [Accepted: 11/17/2019] [Indexed: 02/07/2023]
Abstract
The snake venom miotoxin (MT)-III is a group IIA secreted phospholipase A2 (sPLA2) with pro-inflammatory activities. Previous studies have demonstrated that MT-III has the ability to stimulate macrophages to release inflammatory lipid mediators derived from arachidonic acid metabolism. Among them, we highlight prostaglandin (PG)E2 produced by the cyclooxygenase (COX)-2 pathway, through activation of nuclear factor (NF)-κB. However, the mechanisms coordinating this process are not fully understood. This study investigates the regulatory mechanisms exerted by other groups of bioactive eicosanoids derived from 12-lipoxygenase (12-LO), in particular 12-hydroxyeicosatetraenoic (12-HETE), on group IIA sPLA2-induced (i) PGE2 release, (ii) COX-2 expression, and (iii) activation of signaling pathways p38 mitogen-activated protein kinases(p38MAPK), protein C kinase (PKC), extracellular signal-regulated kinase 1/2 (ERK1/2), and NF-κB. Stimulation of macrophages with group IIA sPLA2 resulted in release of 12-HETE without modification of 12-LO protein levels. Pre-treatment of these cells with baicalein, a 12-LO inhibitor, decreased the sPLA2-induced PGE2 production, significantly reduced COX-2 expression, and inhibited sPLA2-induced ERK; however, it did not affect p38MAPK or PKC phosphorylation. In turn, sPLA2-induced PGE2 release and COX-2 expression, but not NF-κB activation, was attenuated by pre-treating macrophages with PD98059 an inhibitor of ERK1/2. These results suggest that, in macrophages, group IIA sPLA2-induced PGE2 release and COX-2 protein expression are distinctly mediated through 12-HETE followed by ERK1/2 pathway activation, independently of NF-κB activation. These findings highlight an as yet undescribed mechanism by which 12-HETE regulates one of the distinct signaling pathways for snake venom group IIA sPLA2-induced PGE2 release and COX-2 expression in macrophages.
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Affiliation(s)
- Vanessa Moreira
- Departamento de Farmacologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
| | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Bruno Lomonte
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Marco Aurélio Ramirez Vinolo
- Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade de Campinas, Campinas, SP, Brazil
| | - Rui Curi
- Departamento de Fisiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Gérard Lambeau
- Université Côte d'Azur, CNRS, IPMC, Valbonne Sophia Antipolis, France
| | - Catarina Teixeira
- Laboratório de Farmacologia, Instituto Butantan, São Paulo, SP, Brazil
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25
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Stevens JS, Gray MC, Morisseau C, Criss AK. Endocervical and Neutrophil Lipoxygenases Coordinate Neutrophil Transepithelial Migration to Neisseria gonorrhoeae. J Infect Dis 2019; 218:1663-1674. [PMID: 29905822 DOI: 10.1093/infdis/jiy347] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 06/06/2018] [Indexed: 12/13/2022] Open
Abstract
Background Infection with Neisseria gonorrhoeae (GC) is characterized by robust neutrophil influx that is insufficient to clear the bacteria. Sustained neutrophilic inflammation contributes to serious clinical sequelae that particularly affect women, including pelvic inflammatory disease and infertility. Methods We established a 3-component system using GC, End1 polarized human endocervical cells, and primary human neutrophils to investigate neutrophil transepithelial migration following infection. Results Neutrophil migration across endocervical monolayers increased with the infectious dose and required GC-epithelial cell contact. Epithelial protein kinase C, cytosolic phospholipase A2, 12R-lipoxygenase (LOX), and eLOX3 hepoxilin synthase were required for neutrophil transmigration to GC, and migration was abrogated by blocking the MRP2 efflux pump and by adding recombinant soluble epoxide hydrolase. These results are all consistent with epithelial cell production of the neutrophil chemoattractant hepoxilin A3 (HXA3). Neutrophil transmigration was also accompanied by increasing apical concentrations of leukotriene B4 (LTB4). Neutrophil 5-lipoxygenase and active BLT1 receptor were required for apical LTB4 and neutrophil migration. Conclusions Our data support a model in which GC-endocervical cell contact infection stimulates HXA3 production, driving neutrophil migration that is amplified by neutrophil-derived LTB4. Therapeutic targeting of these pathways could limit inflammation and deleterious clinical sequelae in women with gonorrhea.
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Affiliation(s)
- Jacqueline S Stevens
- Department of Microbiology, University of Virginia, Charlottesville.,Department of Immunology, University of Virginia, Charlottesville.,Department of Cancer Biology, University of Virginia, Charlottesville
| | - Mary C Gray
- Department of Microbiology, University of Virginia, Charlottesville.,Department of Immunology, University of Virginia, Charlottesville.,Department of Cancer Biology, University of Virginia, Charlottesville
| | - Christophe Morisseau
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Research Center, University of California, Davis
| | - Alison K Criss
- Department of Microbiology, University of Virginia, Charlottesville.,Department of Immunology, University of Virginia, Charlottesville.,Department of Cancer Biology, University of Virginia, Charlottesville
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26
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Kalia N, Singh J, Kaur M. Immunopathology of Recurrent Vulvovaginal Infections: New Aspects and Research Directions. Front Immunol 2019; 10:2034. [PMID: 31555269 PMCID: PMC6722227 DOI: 10.3389/fimmu.2019.02034] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 08/12/2019] [Indexed: 12/25/2022] Open
Abstract
Recurrent vulvovaginal infections (RVVI), a devastating group of mucosal infection, are severely affecting women's quality of life. Our understanding of the vaginal defense mechanisms have broadened recently with studies uncovering the inflammatory nature of bacterial vaginosis, inflammatory responses against novel virulence factors, innate Type 17 cells/IL-17 axis, neutrophils mediated killing of pathogens by a novel mechanism, and oxidative stress during vaginal infections. However, the pathogens have fine mechanisms to subvert or manipulate the host immune responses, hijack them and use them for their own advantage. The odds of hijacking increases, due to impaired immune responses, the net magnitude of which is the result of numerous genetic variations, present in multiple host genes, detailed in this review. Thus, by underlining the role of the host immune responses in disease etiology, modern research has clarified a major hypothesis shift in the pathophilosophy of RVVI. This knowledge can further be used to develop efficient immune-based diagnosis and treatment strategies for this enigmatic disease conditions. As for instance, plasma-derived MBL replacement, adoptive T-cell, and antibody-based therapies have been reported to be safe and efficacious in infectious diseases. Therefore, these emerging immune-therapies could possibly be the future therapeutic options for RVVI.
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Affiliation(s)
- Namarta Kalia
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, India
| | - Jatinder Singh
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, India
| | - Manpreet Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar, India
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27
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Chen CY, Lee YH, Chang SH, Tsai YF, Fang JY, Hwang TL. Oleic acid-loaded nanostructured lipid carrier inhibit neutrophil activities in the presence of albumin and alleviates skin inflammation. Int J Nanomedicine 2019; 14:6539-6553. [PMID: 31496699 PMCID: PMC6701617 DOI: 10.2147/ijn.s208489] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 07/16/2019] [Indexed: 12/24/2022] Open
Abstract
Aim This paper reports on the incorporation of oleic acid (OA) within nanostructured lipid carriers (OA-NLC) to improve the anti-inflammatory effects in the presence of albumin. Materials and methods NLCs produced via hot high-shear homogenization/ultrasonication were characterized in terms of particle size, zeta potential, and toxicity. We examined the effects of OA-NLC on neutrophil activities. Dermatologic therapeutic potential was also elucidated by using a murine model of leukotriene B4-induced skin inflammation. Results In the presence of albumin, OA-NLC but not free OA inhibited superoxide generation and elastase release. Topical administration of OA-NLC alleviated neutrophil infiltration and severity of skin inflammation. Conclusion OA incorporated within NLC can overcome the interference of albumin, which would undermine the anti-inflammatory effects of OA. OA-NLC has potential therapeutic effects in topical ointments.
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Affiliation(s)
- Chun-Yu Chen
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ying-Hsuan Lee
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Shih-Hsin Chang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.,Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan.,Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Yung-Fong Tsai
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Jia-You Fang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.,Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.,Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.,Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan.,Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan.,Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
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28
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Häfner AK, Kahnt AS, Steinhilber D. Beyond leukotriene formation—The noncanonical functions of 5-lipoxygenase. Prostaglandins Other Lipid Mediat 2019; 142:24-32. [DOI: 10.1016/j.prostaglandins.2019.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/14/2019] [Accepted: 03/25/2019] [Indexed: 01/17/2023]
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29
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Cheng Y, Rong J. Pro-resolving lipid mediators as therapeutic leads for cardiovascular diseases. Expert Opin Ther Targets 2019; 23:423-436. [DOI: 10.1080/14728222.2019.1599360] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yuanyuan Cheng
- School of Pharmaceutical Sciences, Guangzhou Univ Chinese Med, Guangzhou, China
| | - Jianhui Rong
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
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30
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Uppal K, Ma C, Go YM, Jones DP, Wren J. xMWAS: a data-driven integration and differential network analysis tool. Bioinformatics 2019; 34:701-702. [PMID: 29069296 DOI: 10.1093/bioinformatics/btx656] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 10/17/2017] [Indexed: 12/13/2022] Open
Abstract
Summary Integrative omics is a central component of most systems biology studies. Computational methods are required for extracting meaningful relationships across different omics layers. Various tools have been developed to facilitate integration of paired heterogenous omics data; however most existing tools allow integration of only two omics datasets. Furthermore, existing data integration tools do not incorporate additional steps of identifying sub-networks or communities of highly connected entities and evaluating the topology of the integrative network under different conditions. Here we present xMWAS, a software for data integration, network visualization, clustering, and differential network analysis of data from biochemical and phenotypic assays, and two or more omics platforms. Availability and implementation https://kuppal.shinyapps.io/xmwas (Online) and https://github.com/kuppal2/xMWAS/ (R). Contact kuppal2@emory.edu. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Karan Uppal
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Chunyu Ma
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Young-Mi Go
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Dean P Jones
- Clinical Biomarkers Laboratory, Department of Medicine, Emory University, Atlanta, GA 30322, USA
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31
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Archambault AS, Poirier S, Lefebvre JS, Robichaud PP, Larose MC, Turcotte C, Martin C, Provost V, Boudreau LH, McDonald PP, Laviolette M, Surette ME, Flamand N. 20-Hydroxy- and 20-carboxy-leukotriene (LT) B4
downregulate LTB4
-mediated responses of human neutrophils and eosinophils. J Leukoc Biol 2019; 105:1131-1142. [DOI: 10.1002/jlb.ma0718-306r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/30/2018] [Accepted: 12/15/2018] [Indexed: 12/24/2022] Open
Affiliation(s)
- Anne-Sophie Archambault
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Samuel Poirier
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
- Département de chimie et de biochimie; Université de Moncton; Moncton NB E1A 3E9 Canada
| | - Julie-S Lefebvre
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | | | - Marie-Chantal Larose
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Caroline Turcotte
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Cyril Martin
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Véronique Provost
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Luc H. Boudreau
- Département de chimie et de biochimie; Université de Moncton; Moncton NB E1A 3E9 Canada
| | - Patrick P. McDonald
- Centre de recherche du CHUS et Faculté de Médecine; Université de Sherbrooke; Sherbrooke QC J1H 5N4 Canada
| | - Michel Laviolette
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
| | - Marc E. Surette
- Département de chimie et de biochimie; Université de Moncton; Moncton NB E1A 3E9 Canada
| | - Nicolas Flamand
- Centre de recherche de l'Institut universitaire de cardiologie et pneumologie de Québec-Université Laval; Département de médecine; Faculté de médecine; Université Laval; Québec City QC G1V 4G5 Canada
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de Macedo CS, de Carvalho FM, Amaral JJ, de Mendonça Ochs S, Assis EF, Sarno EN, Bozza PT, Pessolani MCV. Leprosy and its reactional episodes: Serum levels and possible roles of omega-3 and omega-6-derived lipid mediators. Cytokine 2018; 112:87-94. [DOI: 10.1016/j.cyto.2018.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 01/27/2023]
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Sala A, Proschak E, Steinhilber D, Rovati GE. Two-pronged approach to anti-inflammatory therapy through the modulation of the arachidonic acid cascade. Biochem Pharmacol 2018; 158:161-173. [DOI: 10.1016/j.bcp.2018.10.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/09/2018] [Indexed: 12/11/2022]
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Brandt SL, Klopfenstein N, Wang S, Winfree S, McCarthy BP, Territo PR, Miller L, Serezani CH. Macrophage-derived LTB4 promotes abscess formation and clearance of Staphylococcus aureus skin infection in mice. PLoS Pathog 2018; 14:e1007244. [PMID: 30102746 PMCID: PMC6107286 DOI: 10.1371/journal.ppat.1007244] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 08/23/2018] [Accepted: 07/26/2018] [Indexed: 01/26/2023] Open
Abstract
The early events that shape the innate immune response to restrain pathogens during skin infections remain elusive. Methicillin-resistant Staphylococcus aureus (MRSA) infection engages phagocyte chemotaxis, abscess formation, and microbial clearance. Upon infection, neutrophils and monocytes find a gradient of chemoattractants that influence both phagocyte direction and microbial clearance. The bioactive lipid leukotriene B4 (LTB4) is quickly (seconds to minutes) produced by 5-lipoxygenase (5-LO) and signals through the G protein-coupled receptors LTB4R1 (BLT1) or BLT2 in phagocytes and structural cells. Although it is known that LTB4 enhances antimicrobial effector functions in vitro, whether prompt LTB4 production is required for bacterial clearance and development of an inflammatory milieu necessary for abscess formation to restrain pathogen dissemination is unknown. We found that LTB4 is produced in areas near the abscess and BLT1 deficient mice are unable to form an abscess, elicit neutrophil chemotaxis, generation of neutrophil and monocyte chemokines, as well as reactive oxygen species-dependent bacterial clearance. We also found that an ointment containing LTB4 synergizes with antibiotics to eliminate MRSA potently. Here, we uncovered a heretofore unknown role of macrophage-derived LTB4 in orchestrating the chemoattractant gradient required for abscess formation, while amplifying antimicrobial effector functions.
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Affiliation(s)
- Stephanie L. Brandt
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
| | - Nathan Klopfenstein
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, Tennessee, United States of America
| | - Soujuan Wang
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
| | - Seth Winfree
- Indiana Center for Biological Microscopy, Indianapolis, Indiana, United States of America
| | - Brian P. McCarthy
- Indiana Institute for Biomedical Imaging Sciences, Department of Radiology, Indianapolis, Indiana, United States of America
| | - Paul R. Territo
- Indiana Institute for Biomedical Imaging Sciences, Department of Radiology, Indianapolis, Indiana, United States of America
| | - Lloyd Miller
- Johns Hopkins University School of Medicine, Department of Dermatology, Baltimore, Maryland, United States of America
| | - C. Henrique Serezani
- Indiana University School of Medicine, Department of Microbiology & Immunology, Indianapolis, Indiana, United States of America
- Vanderbilt University Medical Center, Department of Medicine, Division of Infectious Disease, Nashville, Tennessee, United States of America
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, Nashville, Tennessee, United States of America
- Vanderbilt Institute of Infection, Immunology and Inflammation, Nashville, Tennessee, United States of America
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Shen L, Tenzer S, Hess M, Distler U, Tubbe I, Montermann E, Schimmer S, Dittmer U, Grabbe S, Bros M. Friend virus limits adaptive cellular immune responses by imprinting a maturation-resistant and T helper type 2-biased immunophenotype in dendritic cells. PLoS One 2018; 13:e0192541. [PMID: 29425215 PMCID: PMC5806892 DOI: 10.1371/journal.pone.0192541] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/25/2018] [Indexed: 12/28/2022] Open
Abstract
The murine Friend virus (FV) retrovirus model has been widely used to study anti-viral immune responses, and virus-induced cancer. Here we analyzed FV immune evasion mechanisms on the level of dendritic cells (DC) essential for the induction of primary adaptive immune responses. Comparative quantitative proteome analysis of FV-infected DC (FV-DC) of different genotypes (BALB/c, C57BL/6) and non-infected DC revealed numerous genotype-independently regulated proteins rergulating metabolic activity, cytoskeletal rearrangements, and antigen processing/presentation. These alterations may promote virion production in FV-DC. Stimulation of FV-DC with LPS resulted in strongly enhanced IL-10 production which was partially responsible for their attenuated T cell (CD4+, CD8+) stimulatory capacity. Stimulated FV-DC induced less IFN-γ production in T cells required for cellular anti-viral responses, but more T helper cell type 2 (Th2)-associated cytokines (IL-4, IL-5, IL-13). We conclude that FV reprograms DC to promote viral spreading and immune deviation by imprinting a largely maturation-resistant, Th2-biased immunophenotype.
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Affiliation(s)
- Limei Shen
- Department of Dermatology, University Medical Center, Mainz, Germany
| | - Stefan Tenzer
- Institute of Immunology, University Medical Center, Mainz, Germany
| | - Moritz Hess
- Institute for Medical Biometry, Epidemiology and Informatics, University Medical Center, Mainz, Germany
| | - Ute Distler
- Institute of Immunology, University Medical Center, Mainz, Germany
| | - Ingrid Tubbe
- Department of Dermatology, University Medical Center, Mainz, Germany
| | - Evelyn Montermann
- Department of Dermatology, University Medical Center, Mainz, Germany
| | - Simone Schimmer
- Institute for Virology of the University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Ulf Dittmer
- Institute for Virology of the University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stephan Grabbe
- Department of Dermatology, University Medical Center, Mainz, Germany
- * E-mail:
| | - Matthias Bros
- Department of Dermatology, University Medical Center, Mainz, Germany
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Boff D, Crijns H, Teixeira MM, Amaral FA, Proost P. Neutrophils: Beneficial and Harmful Cells in Septic Arthritis. Int J Mol Sci 2018; 19:E468. [PMID: 29401737 PMCID: PMC5855690 DOI: 10.3390/ijms19020468] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 12/17/2022] Open
Abstract
Septic arthritis is an inflammatory joint disease that is induced by pathogens such as Staphylococcus aureus. Infection of the joint triggers an acute inflammatory response directed by inflammatory mediators including microbial danger signals and cytokines and is accompanied by an influx of leukocytes. The recruitment of these inflammatory cells depends on gradients of chemoattractants including formylated peptides from the infectious agent or dying cells, host-derived leukotrienes, complement proteins and chemokines. Neutrophils are of major importance and play a dual role in the pathogenesis of septic arthritis. On the one hand, these leukocytes are indispensable in the first-line defense to kill invading pathogens in the early stage of disease. However, on the other hand, neutrophils act as mediators of tissue destruction. Since the elimination of inflammatory neutrophils from the site of inflammation is a prerequisite for resolution of the acute inflammatory response, the prolonged stay of these leukocytes at the inflammatory site can lead to irreversible damage to the infected joint, which is known as an important complication in septic arthritis patients. Thus, timely reduction of the recruitment of inflammatory neutrophils to infected joints may be an efficient therapy to reduce tissue damage in septic arthritis.
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Affiliation(s)
- Daiane Boff
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Helena Crijns
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Mauro M Teixeira
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
| | - Flavio A Amaral
- Imunofarmacologia, Department of Biochemistry and Immunology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil.
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
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Chistiakov DA, Melnichenko AA, Grechko AV, Myasoedova VA, Orekhov AN. Potential of anti-inflammatory agents for treatment of atherosclerosis. Exp Mol Pathol 2018; 104:114-124. [PMID: 29378168 DOI: 10.1016/j.yexmp.2018.01.008] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 12/30/2017] [Accepted: 01/17/2018] [Indexed: 12/23/2022]
Abstract
Chronic inflammation is a central pathogenic mechanism of atherosclerosis induction and progression. Vascular inflammation is associated with accelerated onset of late atherosclerosis complications. Atherosclerosis-related inflammation is mediated by a complex cocktail of pro-inflammatory cytokines, chemokines, bioactive lipids, and adhesion molecules, and blocking the key pro-atherogenic inflammatory mechanisms can be beneficial for treatment of atherosclerosis. Therapeutic agents that specifically target some of the atherosclerosis-related inflammatory mechanisms have been evaluated in preclinical and clinical studies. The most promising anti-inflammatory compounds for treatment of atherosclerosis include non-specific anti-inflammatory drugs, phospholipase inhibitors, blockers of major inflammatory cytokines, leukotrienes, adhesion molecules, and pro-inflammatory signaling pathways, such as CCL2-CCR2 axis or p38 MAPK pathway. Ongoing studies attempt evaluating therapeutic utility of these anti-inflammatory drugs for treatment of atherosclerosis. The obtained results are important for our understanding of atherosclerosis-related inflammatory mechanisms and for designing randomized controlled studies assessing the effect of specific anti-inflammatory strategies on cardiovascular outcomes.
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Affiliation(s)
- Dimitry A Chistiakov
- Department of Neurochemistry, Division of Basic and Applied Neurobiology, Serbsky Federal Medical Research Center of Psychiatry and Narcology, Moscow 119991, Russia
| | - Alexandra A Melnichenko
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia
| | - Andrey V Grechko
- Federal Scientific Clinical Center for Resuscitation and Rehabilitation, Moscow 109240, Russia
| | - Veronika A Myasoedova
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia
| | - Alexander N Orekhov
- Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow 125315, Russia; Institute for Atherosclerosis Research, Skolkovo Innovative Center, Moscow 121609, Russia.
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Nemati M, Malla N, Yadav M, Khorramdelazad H, Jafarzadeh A. Humoral and T cell-mediated immune response against trichomoniasis. Parasite Immunol 2018; 40. [PMID: 29266263 DOI: 10.1111/pim.12510] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 11/29/2017] [Indexed: 12/13/2022]
Abstract
Trichomonas vaginalis (T. vaginalis) infection leads to the synthesis of specific antibodies in the serum and local secretions. The profile of T. vaginalis-specific antibodies and T cell-mediated immune responses may influence the outcome of infection, towards parasite elimination, persistence or pathological reactions. Studies have indicated that Th1-, Th17- and Th22 cell-related cytokines may be protective or pathogenic, whereas Th2- and Treg cell-related cytokines can exert anti-inflammatory effects during T. vaginalis infection. A number of T. vaginalis-related components such as lipophosphoglycan (TvLPG), α-actinin, migration inhibitory factor (TvMIF), pyruvate:ferredoxin oxidoreductase (PFO), legumain-1 (TvLEGU-1), adhesins and cysteine proteases lead to the induction of specific antibodies. T. vaginalis has acquired several strategies to evade the humoral immune responses such as degradation of immunoglobulins by cysteine proteases, antigenic variation and killing of antibody-producing B cells. The characterization of the T. vaginalis-specific antibodies to significant immunogenic molecules and formulation of strategies to promote their induction in vaginal mucosa may reveal their potential protective effects against trichomoniasis. In this review, we discuss the current understanding of antibody and T cell-mediated immune responses to T. vaginalis and highlight novel insights into the possible role of immune responses in protection against parasite.
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Affiliation(s)
- M Nemati
- Department of Immunology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.,Department of Laboratory Sciences, School of Para-Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - N Malla
- Department of Medical Parasitology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - M Yadav
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - H Khorramdelazad
- Immunology of Infectious Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - A Jafarzadeh
- Immunology of Infectious Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.,Department of Immunology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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Lopes DEM, Jabr CL, Dejani NN, Saraiva AC, de Aquino SG, Medeiros AI, Rossa Junior C. Inhibition of 5-lipoxygenase attenuates inflammation and BONE resorption in lipopolysaccharide-induced periodontal disease. J Periodontol 2017; 89:235-245. [PMID: 29381190 DOI: 10.1902/jop.2017.170210] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/14/2017] [Indexed: 01/09/2023]
Abstract
BACKGROUND Arachidonate-5-lipoxygenase (5-LO) activity and increased leukotriene B4 (LTB4) production have been implicated in various inflammatory conditions. Increased production of leukotrienes has been associated with periodontal diseases; however, their relative contribution to tissue destruction is unknown. In this study, an orally active specific 5-LO inhibitor is used to assess its role in inflammation and bone resorption in a murine model of lipopolysaccharide (LPS)-induced periodontal disease. METHODS Periodontal disease was induced in Balb/c mice by direct injections of LPS into the palatal gingival tissues adjacent to the maxillary first molars three times per week for 4 weeks. Animals were treated with biochemical inhibitor (2 mg/kg/daily) or the same volume of the vehicle by oral gavage. Microcomputed tomography analysis was used to assess bone resorption. Enzyme immunoassay determined LTB4, and enzyme-linked immunosorbent assays quantified tumor necrosis factor (TNF), interleukin (IL)-12, and IL-10 in gingival tissues. Histologic sections were used for the morphometric analysis (number of neutrophils and mononuclear cells). Osteoclasts were counted in tartrate-resistant acid phosphatase-stained sections. RESULTS Administration of 5-LO inhibitor effectively reduced production of LTB4 (23.7% decrease) and significantly reduced TNF and IL-12 levels in gingival tissues. Moreover, reduction of LTB4 levels in gingival tissues was associated with a significant decrease in bone resorption and a marked reduction in number of osteoclasts and inflammatory cells. CONCLUSION 5-LO activity plays a relevant role in inflammation and bone resorption associated with the LPS model of experimental periodontal disease.
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Affiliation(s)
- Debora E M Lopes
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Sao Paulo, Brazil
| | - Camila L Jabr
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Sao Paulo, Brazil
| | - Naiara N Dejani
- Department of Biological Sciences, School of Pharmaceutical Sciences, Sao Paulo State University
| | - Amanda C Saraiva
- Department of Biological Sciences, School of Pharmaceutical Sciences, Sao Paulo State University
| | - Sabrina G de Aquino
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Sao Paulo, Brazil
- Health Sciences Center, School of Dentistry, Federal University of Paraiba, Joao Pessoa, Paraíba, Brazil
| | - Alexandra I Medeiros
- Department of Biological Sciences, School of Pharmaceutical Sciences, Sao Paulo State University
| | - Carlos Rossa Junior
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, Sao Paulo State University, Araraquara, Sao Paulo, Brazil
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Kupa LDVK, Drewes CC, Barioni ED, Neves CL, Sampaio SC, Farsky SHP. Role of Translocator 18 KDa Ligands in the Activation of Leukotriene B4 Activated G-Protein Coupled Receptor and Toll Like Receptor-4 Pathways in Neutrophils. Front Pharmacol 2017; 8:766. [PMID: 29163156 PMCID: PMC5664262 DOI: 10.3389/fphar.2017.00766] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 10/11/2017] [Indexed: 12/13/2022] Open
Abstract
TSPO (Translocator 18 KDa; tryptophan-rich sensory protein oxygen sensor) is a constitutive outer mitochondrial membrane protein overexpressed in inflammatory cells during local or systemic processes. Despite its expression is characterized, role of TSPO in inflammation remains elusive. For this study, we investigated the role of TSPO ligands on neutrophil functions elicited by two different inflammatory pathways. Peritoneal neutrophils were isolated from male Balb-C mice, treated with TSPO ligand diazepam, Ro5-4864 or PK11195 (1,100 or 1000 nM; 2 h) and further stimulated with lipopolysaccharide from Escherichia coli (LPS), a binding for Toll-Like Receptor-4 (TLR4), or leukotriene B4 (LTB4), a G-protein coupled receptor (GPCR) ligand. LPS treatment did not lead to overexpression of TSPO on neutrophils, and pre-treatment with any TSPO ligand did not alter cytokine expression, adhesion molecule expression, or the production of reactive oxygen and nitrogen species caused by LPS stimulation. Conversely, all TSPO ligands impaired LTB4’s actions, as visualized by reductions in L-selectin shedding, β2 integrin overexpression, neutrophil chemotaxis, and actin filament assembly. TSPO ligands showed distinct intracellular effects on LTB4-induced neutrophil locomotion, with diazepam enhancing cofilin but not modifying Arp2/3 expression, and Ro5-4864 and PK11195 reducing both cofilin and Arp2/3 expression. Taken together, our data exclude a direct role of TSPO ligands in TLR4-elicited pathways, and indicate that TSPO activation inhibits GPCR inflammatory pathways in neutrophils, with a relevant role in neutrophil influx into inflammatory sites.
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Affiliation(s)
- Léonard de Vinci Kanda Kupa
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Carine C Drewes
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Eric D Barioni
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Camila L Neves
- Laboratory of Pathophysiology, Institute Butantan, São Paulo, Brazil
| | | | - Sandra H P Farsky
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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Percher F, Curis C, Pérès E, Artesi M, Rosewick N, Jeannin P, Gessain A, Gout O, Mahieux R, Ceccaldi PE, Van den Broeke A, Duc Dodon M, Afonso PV. HTLV-1-induced leukotriene B4 secretion by T cells promotes T cell recruitment and virus propagation. Nat Commun 2017; 8:15890. [PMID: 28639618 PMCID: PMC5489682 DOI: 10.1038/ncomms15890] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 05/11/2017] [Indexed: 01/20/2023] Open
Abstract
The human T-lymphotropic virus type 1 (HTLV-1) is efficiently transmitted through cellular contacts. While the molecular mechanisms of viral cell-to-cell propagation have been extensively studied in vitro, those facilitating the encounter between infected and target cells remain unknown. In this study, we demonstrate that HTLV-1-infected CD4 T cells secrete a potent chemoattractant, leukotriene B4 (LTB4). LTB4 secretion is dependent on Tax-induced transactivation of the pla2g4c gene, which encodes the cytosolic phospholipase A2 gamma. Inhibition of LTB4 secretion or LTB4 receptor knockdown on target cells reduces T-cell recruitment, cellular contact formation and virus propagation in vitro. Finally, blocking the synthesis of LTB4 in a humanized mouse model of HTLV-1 infection significantly reduces proviral load. This results from a decrease in the number of infected clones while their expansion is not impaired. This study shows the critical role of LTB4 secretion in HTLV-1 transmission both in vitro and in vivo.
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Affiliation(s)
- Florent Percher
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris F-75013, France
| | - Céline Curis
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris F-75013, France
| | - Eléonore Pérès
- Laboratoire de Biologie et Modélisation de la Cellule, ENS de Lyon, INSERM U1210 CNRS-UCBL UMR 5239, UMS 3444 SFR Biosciences-Lyon, Lyon F-69007, France
| | - Maria Artesi
- Unit of Animal Genomics, Groupe Interdisciplinaire Génoprotéomique Appliquée (GIGA), Université de Liège, Liège B-4000, Belgium
| | - Nicolas Rosewick
- Unit of Animal Genomics, Groupe Interdisciplinaire Génoprotéomique Appliquée (GIGA), Université de Liège, Liège B-4000, Belgium
- Laboratory of Experimental Hematology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels B-1000, Belgium
| | - Patricia Jeannin
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
| | - Antoine Gessain
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
| | - Olivier Gout
- Service de Neurologie, Fondation Ophtalmologique Adolphe de Rothschild, Paris F-75019, France
| | - Renaud Mahieux
- Equipe Oncogenèse Rétrovirale, ENS de Lyon, and Equipe Labélisée Ligue Nationale Contre le Cancer, Centre International de Recherche en Infectiologie, INSERM U1111, CNRS UMR 5308, Lyon F-69007, France
| | - Pierre-Emmanuel Ceccaldi
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
- Université Paris Diderot, Sorbonne Paris Cité, Paris F-75013, France
| | - Anne Van den Broeke
- Unit of Animal Genomics, Groupe Interdisciplinaire Génoprotéomique Appliquée (GIGA), Université de Liège, Liège B-4000, Belgium
- Laboratory of Experimental Hematology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels B-1000, Belgium
| | - Madeleine Duc Dodon
- Laboratoire de Biologie et Modélisation de la Cellule, ENS de Lyon, INSERM U1210 CNRS-UCBL UMR 5239, UMS 3444 SFR Biosciences-Lyon, Lyon F-69007, France
| | - Philippe V. Afonso
- Unité d'Epidémiologie et Physiopathologie des Virus Oncogènes, Département de Virologie, Institut Pasteur, Paris F-75015, France
- Centre National de la Recherche Scientifique (CNRS) UMR 3569, Paris F-75015, France
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Buechler C, Pohl R, Aslanidis C. Pro-Resolving Molecules-New Approaches to Treat Sepsis? Int J Mol Sci 2017; 18:ijms18030476. [PMID: 28241480 PMCID: PMC5372492 DOI: 10.3390/ijms18030476] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 02/06/2023] Open
Abstract
Inflammation is a complex response of the body to exogenous and endogenous insults. Chronic and systemic diseases are attributed to uncontrolled inflammation. Molecules involved in the initiation of inflammation are very well studied while pathways regulating its resolution are insufficiently investigated. Approaches to down-modulate mediators relevant for the onset and duration of inflammation are successful in some chronic diseases, while all of them have failed in sepsis patients. Inflammation and immune suppression characterize sepsis, indicating that anti-inflammatory strategies alone are inappropriate for its therapy. Heme oxygenase 1 is a sensitive marker for oxidative stress and is upregulated in inflammation. Carbon monoxide, which is produced by this enzyme, initiates multiple anti-inflammatory and pro-resolving activities with higher production of omega-3 fatty acid-derived lipid metabolites being one of its protective actions. Pro-resolving lipids named maresins, resolvins and protectins originate from the omega-3 fatty acids eicosapentaenoic acid and docosahexaenoic acid while lipoxins are derived from arachidonic acid. These endogenously produced lipids do not simply limit inflammation but actively contribute to its resolution, and thus provide an opportunity to combat chronic inflammatory diseases and eventually sepsis.
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Affiliation(s)
- Christa Buechler
- Department of Internal Medicine I, Regensburg University Hospital, 93042 Regensburg, Germany.
| | - Rebekka Pohl
- Department of Internal Medicine I, Regensburg University Hospital, 93042 Regensburg, Germany.
| | - Charalampos Aslanidis
- Institute of Clinical Chemistry and Laboratory Medicine, Regensburg University Hospital, 93042 Regensburg, Germany.
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Lütkecosmann S, Warsinke A, Tschöpe W, Eichler R, Hanack K. A novel monoclonal antibody suitable for the detection of leukotriene B4. Biochem Biophys Res Commun 2016; 482:1054-1059. [PMID: 27913298 DOI: 10.1016/j.bbrc.2016.11.157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 11/28/2016] [Indexed: 12/20/2022]
Abstract
Leukotriene B4 as an inflammatory mediator is an important biomarker for different respiratory diseases like asthma, chronic obstructive pulmonary disease or cystic lung fibrosis. Therefore the detection of LTB4 is helpful in the diagnosis of these pulmonary diseases. However, until now its determination in exhaled breath condensates suffers from problems of accuracy. Reasons for that could be improper sample collection and preparation methods of condensates and the lack of consistently assay specificity and reproducibility of the used immunoassay detection system. In this study we describe the development and the characterization of a specific monoclonal antibody (S27BC6) against LTB4, its use as molecular recognition element for the development of an enzyme-linked immunoassay to detect LTB4 and discuss possible future diagnostic applications.
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Affiliation(s)
- Steffi Lütkecosmann
- Chair of Immunotechnology, Department of Biotechnology, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam, Germany
| | - Axel Warsinke
- FILT GmbH, Robert-Rössle-Str. 10, 13125 Berlin, Germany
| | | | | | - Katja Hanack
- Chair of Immunotechnology, Department of Biotechnology, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam, Germany.
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Li T, Ke Y, Cheng H. [Reasearch progress on the role of neutrophils in asthma]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2016; 45:544-549. [PMID: 28087917 PMCID: PMC10397077 DOI: 10.3785/j.issn.1008-9292.2016.09.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 07/17/2016] [Indexed: 06/06/2023]
Abstract
Asthma is a phenotypically heterogeneous chronic disease of the airways. Studies have found that neutrophils are crucial to airway inflammation in acute asthma, persistent asthma, particularly in asthma of poor response to glucocorticoid treatment. The role of neutrophils in development of bronchial asthma is complex, as they can release a potent source of cytokines and inflammatory mediators participating in asthma. Differing from eosinophilic inflammatory asthma, neutrophilic inflammatory asthma is not depend on helper T (Th)2 cells, but may be related to Th1 and Th17 cells. This review highlights the role of neutrophils in the development of asthma, and the treatment of neutrophilic asthma with biological agents and novel small molecules.
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Affiliation(s)
- Tingting Li
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yuehai Ke
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Hongqiang Cheng
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou 310058, China.
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45
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Paula-Silva FWG, Petean IBF, da Silva LAB, Faccioli LH. Dual Role of 5-Lipoxygenase in Osteoclastogenesis in Bacterial-induced Apical Periodontitis. J Endod 2016; 42:447-54. [DOI: 10.1016/j.joen.2015.12.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 11/11/2015] [Accepted: 12/03/2015] [Indexed: 01/07/2023]
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Leukotriene B4 Enhances NOD2-Dependent Innate Response against Influenza Virus Infection. PLoS One 2015; 10:e0139856. [PMID: 26444420 PMCID: PMC4596707 DOI: 10.1371/journal.pone.0139856] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 09/16/2015] [Indexed: 12/13/2022] Open
Abstract
Leukotriene B4 (LTB4), a central mediator of inflammation, is well known for its chemoattractant properties on effectors cells of the immune system. LTB4 also has the ability to control microbial infection by improving host innate defenses through the release of antimicrobial peptides and modulation of intracellular Toll-like receptors (TLRs) expression in response to agonist challenge. In this report, we provide evidences that LTB4 acts on nucleotide-binging oligomerization domain 2 (NOD2) pathway to enhance immune response against influenza A infection. Infected mice receiving LTB4 show improved survival, lung architecture and reduced lung viral loads as compared to placebo-treated animals. NOD2 and its downstream adaptor protein IPS-1 have been found to be essential for LTB4-mediated effects against IAV infection, as absence of NOD2 or IPS-1 diminished its capacity to control viral infection. Treatment of IAV-infected mice with LTB4 induces an increased activation of IPS-1-IRF3 axis leading to an enhanced production of IFNβ in lungs of infected mice. LTB4 also has the ability to act on the RICK-NF-κB axis since administration of LTB4 to mice challenged with MDP markedly increases the secretion of IL-6 and TNFα in lungs of mice. TAK1 appears to be essential to the action of LTB4 on NOD2 pathway since pretreatment of MEFs with TAK1 inhibitor prior stimulation with IAV or MDP strongly abrogated the potentiating effects of LTB4 on both IFNβ and cytokine secretion. Together, our results demonstrate that LTB4, through its ability to activate TAK1, potentiates both IPS-1 and RICK axis of the NOD2 pathway to improve host innate responses.
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EETs Attenuate Ox-LDL-Induced LTB4 Production and Activity by Inhibiting p38 MAPK Phosphorylation and 5-LO/BLT1 Receptor Expression in Rat Pulmonary Arterial Endothelial Cells. PLoS One 2015; 10:e0128278. [PMID: 26035589 PMCID: PMC4452698 DOI: 10.1371/journal.pone.0128278] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/23/2015] [Indexed: 11/30/2022] Open
Abstract
Cytochrome P-450 epoxygenase (EPOX)-derived epoxyeicosatrienoic acids (EETs), 5-lipoxygenase (5-LO), and leukotriene B4 (LTB4), the product of 5-LO, all play a pivotal role in the vascular inflammatory process. We have previously shown that EETs can alleviate oxidized low-density lipoprotein (ox-LDL)-induced endothelial inflammation in primary rat pulmonary artery endothelial cells (RPAECs). Here, we investigated whether ox-LDL can promote LTB4 production through the 5-LO pathway. We further explored how exogenous EETs influence ox-LDL-induced LTB4 production and activity. We found that treatment with ox-LDL increased the production of LTB4 and further led to the expression and release of both monocyte chemoattractant protein-1 (MCP-1/CCL2) and intercellular adhesion molecule-1 (ICAM-1). All of the above ox-LDL-induced changes were attenuated by the presence of 11,12-EET and 14,15-EET, as these molecules inhibited the 5-LO pathway. Furthermore, the LTB4 receptor 1 (BLT1 receptor) antagonist U75302 attenuated ox-LDL-induced ICAM-1 and MCP-1/CCL2 expression and production, whereas LY255283, a LTB4 receptor 2 (BLT2 receptor) antagonist, produced no such effects. Moreover, in RPAECs, we demonstrated that the increased expression of 5-LO and BLT1 following ox-LDL treatment resulted from the activation of nuclear factor-κB (NF-κB) via the p38 mitogen-activated protein kinase (MAPK) pathway. Our results indicated that EETs suppress ox-LDL-induced LTB4 production and subsequent inflammatory responses by downregulating the 5-LO/BLT1 receptor pathway, in which p38 MAPK phosphorylation activates NF-κB. These results suggest that the metabolism of arachidonic acid via the 5-LO and EPOX pathways may present a mutual constraint on the physiological regulation of vascular endothelial cells.
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48
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Herwald H, Egesten A. All that glisters is not gold - Staphylococcus aureus and innate immunity. J Innate Immun 2015; 7:113-115. [PMID: 25732123 DOI: 10.1159/000371822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Naviaux JC, Wang L, Li K, Bright AT, Alaynick WA, Williams KR, Powell SB, Naviaux RK. Antipurinergic therapy corrects the autism-like features in the Fragile X (Fmr1 knockout) mouse model. Mol Autism 2015; 6:1. [PMID: 25705365 PMCID: PMC4334917 DOI: 10.1186/2040-2392-6-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 12/16/2014] [Indexed: 02/07/2023] Open
Abstract
Background This study was designed to test a new approach to drug treatment of autism spectrum disorders (ASDs) in the Fragile X (Fmr1) knockout mouse model. Methods We used behavioral analysis, mass spectrometry, metabolomics, electron microscopy, and western analysis to test the hypothesis that the disturbances in social behavior, novelty preference, metabolism, and synapse structure are treatable with antipurinergic therapy (APT). Results Weekly treatment with the purinergic antagonist suramin (20 mg/kg intraperitoneally), started at 9 weeks of age, restored normal social behavior, and improved metabolism, and brain synaptosomal structure. Abnormalities in synaptosomal glutamate, endocannabinoid, purinergic, and IP3 receptor expression, complement C1q, TDP43, and amyloid β precursor protein (APP) were corrected. Comprehensive metabolomic analysis identified 20 biochemical pathways associated with symptom improvements. Seventeen pathways were shared with human ASD, and 11 were shared with the maternal immune activation (MIA) model of ASD. These metabolic pathways were previously identified as functionally related mediators of the evolutionarily conserved cell danger response (CDR). Conclusions The data show that antipurinergic therapy improves the multisystem, ASD-like features of both the environmental MIA, and the genetic Fragile X models. These abnormalities appeared to be traceable to mitochondria and regulated by purinergic signaling. Electronic supplementary material The online version of this article (doi:10.1186/2040-2392-6-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jane C Naviaux
- Department of Psychiatry, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA
| | - Lin Wang
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA
| | - Kefeng Li
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA
| | - A Taylor Bright
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA
| | - William A Alaynick
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA
| | - Kenneth R Williams
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; General Atomics, Inc, San Diego, CA USA
| | - Susan B Powell
- Department of Psychiatry, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Research Service, VA San Diego Healthcare System, La Jolla, CA USA
| | - Robert K Naviaux
- The Mitochondrial and Metabolic Disease Center, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Medicine, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Pediatrics, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Department of Pathology, University of California, San Diego School of Medicine, 214 Dickinson St., Bldg CTF, Rm C102, San Diego, CA 92103-8467 USA ; Veterans Affairs Center for Excellence in Stress and Mental Health (CESAMH), La Jolla, CA USA
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Kuhn H, Banthiya S, van Leyen K. Mammalian lipoxygenases and their biological relevance. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1851:308-30. [PMID: 25316652 DOI: 10.1016/j.bbalip.2014.10.002] [Citation(s) in RCA: 419] [Impact Index Per Article: 41.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 09/30/2014] [Accepted: 10/03/2014] [Indexed: 02/07/2023]
Abstract
Lipoxygenases (LOXs) form a heterogeneous class of lipid peroxidizing enzymes, which have been implicated not only in cell proliferation and differentiation but also in the pathogenesis of various diseases with major public health relevance. As other fatty acid dioxygenases LOXs oxidize polyunsaturated fatty acids to their corresponding hydroperoxy derivatives, which are further transformed to bioactive lipid mediators (eicosanoids and related substances). On the other hand, lipoxygenases are key players in the regulation of the cellular redox homeostasis, which is an important element in gene expression regulation. Although the first mammalian lipoxygenases were discovered 40 years ago and although the enzymes have been well characterized with respect to their structural and functional properties the biological roles of the different lipoxygenase isoforms are not completely understood. This review is aimed at summarizing the current knowledge on the physiological roles of different mammalian LOX-isoforms and their patho-physiological function in inflammatory, metabolic, hyperproliferative, neurodegenerative and infectious disorders. This article is part of a Special Issue entitled "Oxygenated metabolism of PUFA: analysis and biological relevance".
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Affiliation(s)
- Hartmut Kuhn
- Institute of Biochemistry, University Medicine Berlin - Charite, Chariteplatz 1, CCO-Building, Virchowweg 6, D-10117 Berlin, Germany.
| | - Swathi Banthiya
- Institute of Biochemistry, University Medicine Berlin - Charite, Chariteplatz 1, CCO-Building, Virchowweg 6, D-10117 Berlin, Germany
| | - Klaus van Leyen
- Neuroprotection Research Laboratory, Department of Radiology, Massachusetts Genrel Hospital and Harvard Medical School, Charlestown, MA, USA
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