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Akula S, Tripathi SR, Franke K, Wernersson S, Babina M, Hellman L. Cultures of Human Skin Mast Cells, an Attractive In Vitro Model for Studies of Human Mast Cell Biology. Cells 2024; 13:98. [PMID: 38201301 PMCID: PMC10778182 DOI: 10.3390/cells13010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Studies of mast cell biology are dependent on relevant and validated in vitro models. Here, we present detailed information concerning the phenotype of both freshly isolated human skin mast cells (MCs) and of in vitro cultures of these cells that were obtained by analyzing their total transcriptome. Transcript levels of MC-related granule proteins and transcription factors were found to be remarkably stable over a 3-week culture period. Relatively modest changes were also seen for important cell surface receptors including the high-affinity receptor for IgE, FCER1A, the low-affinity receptor for IgG, FCGR2A, and the receptor for stem cell factor, KIT. FCGR2A was the only Fc receptor for IgG expressed by these cells. The IgE receptor increased by 2-5-fold and an approximately 10-fold reduction in the expression of FCGR2A was observed most likely due to the cytokines, SCF and IL-4, used for expanding the cells. Comparisons of the present transcriptome against previously reported transcriptomes of mouse peritoneal MCs and mouse bone marrow-derived MCs (BMMCs) revealed both similarities and major differences. Strikingly, cathepsin G was the most highly expressed granule protease in human skin MCs, in contrast to the almost total absence of this protease in both mouse MCs. Transcript levels for the majority of cell surface receptors were also very low compared to the granule proteases in both mouse and human MCs, with a difference of almost two orders of magnitude. An almost total absence of T-cell granzymes was observed in human skin MCs, indicating that granzymes have no or only a minor role in human MC biology. Ex vivo skin MCs expressed high levels of selective immediate early genes and transcripts of heat shock proteins. In validation experiments, we determined that this expression was an inherent property of the cells and not the result of the isolation process. Three to four weeks in culture results in an induction of cell growth-related genes accompanying their expansion by 6-10-fold, which increases the number of cells for in vitro experiments. Collectively, we show that cultured human skin MCs resemble their ex vivo equivalents in many respects and are a more relevant in vitro model compared to mouse BMMCs for studies of MC biology, in particular human MC biology.
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Affiliation(s)
- Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-75124 Uppsala, Sweden;
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Box 7011, SE-75007 Uppsala, Sweden;
| | - Shiva Raj Tripathi
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany; (S.R.T.); (K.F.)
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Kristin Franke
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany; (S.R.T.); (K.F.)
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Sara Wernersson
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Box 7011, SE-75007 Uppsala, Sweden;
| | - Magda Babina
- Institute of Allergology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany; (S.R.T.); (K.F.)
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-75124 Uppsala, Sweden;
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Eraky AM, Wright A, McDonald D. Pseudo-Allergies in the Emergency Department: A Common Misdiagnosis of Hypersensitivity Type 1 Allergic Reaction. Cureus 2023; 15:e46536. [PMID: 37927771 PMCID: PMC10625449 DOI: 10.7759/cureus.46536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/07/2023] Open
Abstract
Type-1 hypersensitivity reaction represents an acute IgE-mediated reaction that can cause life-threatening conditions, such as anaphylactic shock, angioedema, and airway obstruction. Other reactions that can mimic type-1 hypersensitivity reactions include IgE-independent mast cell degranulation, bradykinin-mediated reactions, leukotrienes-mediated reactions, and pseudo-allergies. We use the term pseudo-allergy in this article for histamine-mediated reactions that are mast cell-independent. We did not discuss pseudo-allergic reactions that are not acute or life-threatening, such as celiac disease, Heiner's syndrome, eosinophilic esophagitis, and food protein-induced enterocolitis in our article because the emergency department is not the primary location to diagnose or treat these reactions. Herein, we present some allergic-like reactions that can be life-threatening, such as scombroid food poisoning (SFP), bradykinin-induced angioedema, IgE-independent angioedema, opioid-induced angioedema, and non-steroidal anti-inflammatory drug (NSAID)-induced hypersensitivity and angioedema. These reactions may have different treatments based on their mechanism of reaction. Histamine-mediated reactions, such as SFP, histamine-mediated angioedema, and mast cell degranulation induced by NSAIDs, and opioids can be treated with antihistamines, epinephrine, and corticosteroids. Bradykinin-induced angioedema, including hereditary angioedema and acquired angioedema, can be treated with fresh frozen plasma. Hereditary angioedema can be treated with many FDA-approved targeted medications, such as plasma-derived C1-INH, plasma kallikrein inhibitor (Ecallantide), and selective bradykinin-2 receptor antagonist (Icatibant). However, these targeted agents are not well-studied enough to be used for acquired angioedema. It is crucial for emergency medicine physicians to be familiar with and predict these reactions to prevent misdiagnosis, be prepared to treat these life-threatening conditions appropriately without delay and eliminate patients' exposure to any unnecessary investigations or treatments.
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Affiliation(s)
- Akram M Eraky
- Emergency Medicine, Freeman Health System, Joplin, USA
- Emergency Medicine, Kansas City University of Medicine and Biosciences, Kansas, USA
| | - Alisha Wright
- Emergency Medicine, Freeman Health System, Joplin, USA
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Vorobjeva NV, Chelombitko MA, Sud’ina GF, Zinovkin RA, Chernyak BV. Role of Mitochondria in the Regulation of Effector Functions of Granulocytes. Cells 2023; 12:2210. [PMID: 37759432 PMCID: PMC10526294 DOI: 10.3390/cells12182210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Granulocytes (neutrophils, eosinophils, and basophils) are the most abundant circulating cells in the innate immune system. Circulating granulocytes, primarily neutrophils, can cross the endothelial barrier and activate various effector mechanisms to combat invasive pathogens. Eosinophils and basophils also play an important role in allergic reactions and antiparasitic defense. Granulocytes also regulate the immune response, wound healing, and tissue repair by releasing of various cytokines and lipid mediators. The effector mechanisms of granulocytes include the production of reactive oxygen species (ROS), degranulation, phagocytosis, and the formation of DNA-containing extracellular traps. Although all granulocytes are primarily glycolytic and have only a small number of mitochondria, a growing body of evidence suggests that mitochondria are involved in all effector functions as well as in the production of cytokines and lipid mediators and in apoptosis. It has been shown that the production of mitochondrial ROS controls signaling pathways that mediate the activation of granulocytes by various stimuli. In this review, we will briefly discuss the data on the role of mitochondria in the regulation of effector and other functions of granulocytes.
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Affiliation(s)
- Nina V. Vorobjeva
- Department Immunology, Biology Faculty, Lomonosov Moscow State University, 119234 Moscow, Russia;
| | - Maria A. Chelombitko
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.A.C.); (R.A.Z.)
- The Russian Clinical Research Center for Gerontology, Ministry of Healthcare of the Russian Federation, Pirogov Russian National Research Medical University, 129226 Moscow, Russia
| | - Galina F. Sud’ina
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.A.C.); (R.A.Z.)
| | - Roman A. Zinovkin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.A.C.); (R.A.Z.)
- The Russian Clinical Research Center for Gerontology, Ministry of Healthcare of the Russian Federation, Pirogov Russian National Research Medical University, 129226 Moscow, Russia
| | - Boris V. Chernyak
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.A.C.); (R.A.Z.)
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Rocha FAC, da Silva GFM, Nogueira IA, Nunes RDM, Martins CDS. Montelukast as a treatment for refractory cutaneous lupus: A case series. Int J Rheum Dis 2023; 26:1816-1820. [PMID: 36938851 DOI: 10.1111/1756-185x.14671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/25/2023] [Accepted: 03/04/2023] [Indexed: 03/21/2023]
Abstract
INTRODUCTION There are no drugs specifically approved to treat cutaneous lupus. Inflammatory cells in lupus skin lesions can produce leukotrienes (LT), which promote tissue damage. In addition to hypersensitivity reactions, LT are also associated with cardiovascular diseases and elevated serum LT levels have been linked to worse atherosclerotic disease in lupus. Targeting LT could thus be an alternative to treat lupus. We present 4 cases of cutaneous lupus successfully treated with montelukast (MLK), a Cys-LT antagonist. METHODS Four consecutive female systemic lupus erythematosus (SLE) patients with refractory skin lesions were treated with MLK (10 mg/d) in the Hospital Universitário Walter Cantídio of the Universidade Federal do Ceará. Skin lesions were scored using Revised Cutaneous LE Disease Area and Severity Index (RCLASI). Relative expression of the 5-lipoxigenase (ALOX5) and 15-lipoxigenase (ALOX15) genes was determined in peripheral blood cells (PBC) from lupus patients and 4 age-matched female controls. RESULTS All patients experienced improvement of skin lesions measured using RCLASI scores within 2-12 weeks following initiation of MLK. The response was sustained for at least 3 months follow-up and no adverse events were recorded. ALOX5 but not ALOX15 gene expression was significantly (P = 0.0425) increased in PBC from SLE patients vs controls. CONCLUSION This is the first report of a fast and sustained successful response of cutaneous lupus to MLK. Given its acceptable safety profile, our data encourage development of a randomized trial as an attempt to reposition MLK as a safe, affordable alternative to treat cutaneous lupus.
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Affiliation(s)
| | | | - Igor Albuquerque Nogueira
- Department of Internal Medicine-Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Rodolfo de Melo Nunes
- Department of Internal Medicine-Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Conceição da Silva Martins
- Postgraduate Program in Morphofunctional Sciences-Department of Morphology-Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, Brazil
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Dahlke P, Peltner LK, Jordan PM, Werz O. Differential impact of 5-lipoxygenase-activating protein antagonists on the biosynthesis of leukotrienes and of specialized pro-resolving mediators. Front Pharmacol 2023; 14:1219160. [PMID: 37680719 PMCID: PMC10481534 DOI: 10.3389/fphar.2023.1219160] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/08/2023] [Indexed: 09/09/2023] Open
Abstract
Lipoxygenases (LOX) transform arachidonic acid (AA, C20:4) and docosahexaenoic acid (DHA, C22:6) into bioactive lipid mediators (LMs) that comprise not only pro-inflammatory leukotrienes (LTs) but also the specialized pro-resolving mediators (SPMs) that promote inflammation resolution and tissue regeneration. The 5-LOX-activating protein (FLAP) is known to provide AA as a substrate to 5-LOX for generating LTs, such as LTB4, a potent chemoattractant and activator of phagocytes. Notably, 5-LOX is also involved in the biosynthesis of certain SPMs, namely, lipoxins and D-resolvins, implying a role of FLAP in SPM formation. FLAP antagonists have been intensively developed as LT biosynthesis inhibitors, but how they impact SPM formation is a matter of debate. Here, we show that FLAP antagonism suppresses the conversion of AA by 5-LOX to LT and lipoxins, while the conversion of DHA to SPM is unaffected. Screening of multiple prominent FLAP antagonists for their effects on LM formation in human M1- and M2-monocyte-derived macrophages by comprehensive LM profiling showed that all nine compounds reduced the production of 5-LOX-derived LTs but increased the formation of SPMs from DHA, e.g., resolvin D5. Some FLAP antagonists, especially those that contain an indole or benzimidazole moiety, even elicited SPM formation in resting M2-monocyte-derived macrophages. Intriguingly, in coincubations of human neutrophils and platelets that produce substantial AA-derived lipoxin and DHA-derived RvD5, FLAP antagonism abolished lipoxin formation, but resolvin D5 levels remained unaffected. Conclusively, antagonism of FLAP suppresses the conversion of AA by 5-LOX to LTs and lipoxins but not the conversion of DHA by 5-LOX to SPM, which should be taken into account for the development of such compounds as anti-inflammatory drugs.
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Affiliation(s)
- Philipp Dahlke
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, Jena, Germany
| | - Lukas K. Peltner
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, Jena, Germany
| | - Paul M. Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Jena, Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Jena, Germany
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Wachsmann-Maga A, Maga M, Polczyk R, Włodarczyk A, Pasieka P, Terlecki K, Maga P. Vascular Inflammatory Markers as Predictors of Peripheral Arterial Disease Patients' Quality-of-Life Changes after Endovascular Treatment. J Clin Med 2023; 12:jcm12103412. [PMID: 37240517 DOI: 10.3390/jcm12103412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/06/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
The association between chronic inflammation and depression, anxiety, anhedonia, and quality of life (QoL) has been recently emphasized. However, the pathophysiology of this relationship remains unsolved. This study aims to assess the dependence between vascular inflammation represented by eicosanoid concentration and quality of life in patients with peripheral arterial disease (PAD). A total of 175 patients undergoing endovascular treatment due to lower limbs ischemia were covered with eight years of observation after the endovascular procedure, including ankle-brachial index (ABI), color Doppler ultrasound examination, urinary leukotriene E4 (LTE4), thromboxane B2 (TXB2) and 5-Hydroxyeicosatetraenoic acid (5-HETE) measurement and quality-of-life assessment with VascuQol-6. The baseline concentrations of LTE4 and TXB2 reversely correlated with preoperative VascuQol-6 and were predictive of the postoperative values of VascuQol-6 at each follow-up. At every follow-up timepoint, the results of VascuQol-6 reflected the LTE4 and TXB2 concentrations. Higher concentrations of LTE4 and TXB2 were correlated with lower life quality during the next follow-up meeting. Changes in VascuQol-6 at eight years vs. preoperative values were reversely related to the preoperative concentrations of LTE4 and TXB2. This is the first study to confirm that changes in life quality in PAD patients undergoing endovascular treatment are highly dependent on eicosanoid-based vascular inflammation.
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Affiliation(s)
- Agnieszka Wachsmann-Maga
- Department of Angiology, Faculty of Medicine, Jagiellonian University Medical College, 31-008 Kraków, Poland
- Clinical Department of Angiology, University Hospital in Kraków, 30-688 Kraków, Poland
| | - Mikołaj Maga
- Clinical Department of Angiology, University Hospital in Kraków, 30-688 Kraków, Poland
- Department of Rehabilitation in Internal Diseases, Faculty of Health Sciences, Jagiellonian University Medical College, 31-008 Kraków, Poland
| | - Romuald Polczyk
- Institute of Psychology, Jagiellonian University, 30-060 Kraków, Poland
| | - Aleksandra Włodarczyk
- Department of Angiology, Faculty of Medicine, Jagiellonian University Medical College, 31-008 Kraków, Poland
| | - Patrycja Pasieka
- Department of Dermatology, Jagiellonian University Medical College, 31-008 Kraków, Poland
| | - Karol Terlecki
- Department of Vascular Surgery and Angiology, Medical University of Lublin, 20-081 Lublin, Poland
| | - Paweł Maga
- Department of Angiology, Faculty of Medicine, Jagiellonian University Medical College, 31-008 Kraków, Poland
- Clinical Department of Angiology, University Hospital in Kraków, 30-688 Kraków, Poland
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Mirra D, Esposito R, Spaziano G, Rafaniello C, Iovino P, Cione E, Gallelli L, D'Agostino B. Association between Sex-Related ALOX5 Gene Polymorphisms and Lung Atopy Risk. J Clin Med 2023; 12:jcm12082775. [PMID: 37109111 PMCID: PMC10145460 DOI: 10.3390/jcm12082775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Atopy is an exaggerated IgE-mediated immune response to foreign antigens in which metabolic abnormalities of the leukotrienes (LTs) pathway play a crucial role. Recent studies have described sex as a key variable in LT biosynthesis, partly explaining why treatment with anti-LT drugs in atopic subjects leads to better control of symptoms in women. In addition, variability in LT production is often associated with single nucleotide polymorphisms (SNPs) in the arachidonate 5-lipoxygenase (ALOX5) gene, which encodes the leukotriene-synthesizing enzyme machinery, 5-lipoxygenase (5-LO). This study aimed to investigate whether two SNPs of ALOX5 are implicated in sex differences in allergic diseases in a prospective cohort of 150 age- and sex-matched atopic and healthy subjects. Rs2029253 and rs2115819 were genotyped using allele-specific RT-PCR, and serum levels of 5-LO and LTB4 were measured by ELISA. Both polymorphisms are significantly more common in women than in men, and their influences on LT production vary as a function of sex, leading to a decrease in men's and an increase in women's serum levels of 5-LO and LTB4. These data represent a new resource for understanding sex-related differences in lung inflammatory diseases, partly explaining why women are more likely to develop allergic disorders than men.
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Affiliation(s)
- Davida Mirra
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Renata Esposito
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Giuseppe Spaziano
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Concetta Rafaniello
- Campania Regional Centre for Pharmacovigilance and Pharmacoepidemiology, 80138 Naples, Italy
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli", University of Campania "Luigi Vanvitelli", 80138 Naples, Italy
| | - Pasquale Iovino
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Erika Cione
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
| | - Luca Gallelli
- Clinical Pharmacology and Pharmacovigilance Unit, Department of Health Sciences, Mater Domini Hospital, University of Catanzaro, 88100 Catanzaro, Italy
| | - Bruno D'Agostino
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
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Röhrl J, Piqué-Borràs MR, Jaklin M, Werner M, Werz O, Josef H, Hölz H, Ammendola A, Künstle G. Anti-Inflammatory Activities of Arnica montana Planta Tota versus Flower Extracts: Analytical, In Vitro and In Vivo Mouse Paw Oedema Model Studies. Plants (Basel) 2023; 12:1348. [PMID: 36987036 PMCID: PMC10053944 DOI: 10.3390/plants12061348] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/22/2023] [Accepted: 03/08/2023] [Indexed: 06/19/2023]
Abstract
Arnica montana is well known for its anti-inflammatory properties. While the anti-inflammatory activity of Arnica flowers (Arnicae flos) has been extensively studied, that of the whole plant (Arnicae planta tota) is less characterized. We compared the ability of Arnicae planta tota and Arnicae flos extracts to inhibit the pro-inflammatory NF-κB-eicosanoid pathway, using several in vitro and in vivo assays. We showed that Arnicae planta tota inhibited NF-κB reporter activation, with an IC50 of 15.4 μg/mL (vs. 52.5 μg/mL for Arnicae flos). Arnicae planta tota also inhibited LPS-induced expression of ALOX5 and PTGS2 genes in human differentiated macrophages. ALOX5 and PTGS2 encode the 5-lipoxygenase (5-LO) and cyclooxygenase-2 (COX-2) enzymes that initialize the conversion of arachidonic acid into leukotrienes and prostaglandins, respectively. Arnicae planta tota inhibited 5-LO and COX-2 enzymatic activity in vitro and in human primary peripheral blood cells, with lower IC50 compared to Arnicae flos. Finally, Arnicae planta tota applied topically reduced carrageenan-induced mouse paw oedema more efficiently than Arnicae flos. Altogether, Arnicae planta tota displayed a superior anti-inflammatory activity compared to Arnicae flos, suggesting that Arnicae-planta-tota-containing products might be more effective in alleviating the manifestations of acute inflammation than those based on Arnicae flos alone.
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Affiliation(s)
- Johann Röhrl
- Preclinical Development, Weleda AG, 4144 Arlesheim, Switzerland
| | | | - Manuela Jaklin
- Preclinical Development, Weleda AG, 4144 Arlesheim, Switzerland
| | - Markus Werner
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Heinke Josef
- Quality Control, Weleda AG, 73525 Schwäbisch Gmünd, Germany
| | - Hubert Hölz
- Quality Control, Weleda AG, 73525 Schwäbisch Gmünd, Germany
| | - Aldo Ammendola
- Research and Development, Weleda AG, 4144 Arlesheim, Switzerland
| | - Gerald Künstle
- Preclinical Development, Weleda AG, 4144 Arlesheim, Switzerland
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Çelik GE, Aydin Ö, Güloğlu D, Seçil D, Melli M, Doğu F, Ikinciogullari A, Sin BA, Demirel Y, Misirligil Z. What happens to basophils and tryptase, LXA 4 and CysLTs during aspirin desensitization? J Asthma 2022:1-11. [PMID: 36472920 DOI: 10.1080/02770903.2022.2156352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Aspirin desensitization (AD) is an effective treatment in patients with non-steroidal anti-inflammatory drugs (NSAID)-exacerbated respiratory disease (NERD) by providing inhibitory effect on symptoms and polyp recurrence. However, limited data is available on how AD works. We aimed to study comprehensively the mechanisms underlying AD by examining basophil activation (CD203c upregulation), mediator-releases of tryptase, CysLT, and LXA4, and LTB4 receptor expression for the first 3 months of AD. METHODS The study was conducted in patients with NERD who underwent AD (group 1: n = 23), patients with NERD who received no desensitization (group 2: n = 22), and healthy volunteers (group 3, n = 13). All participants provided blood samples for flow cytometry studies (CD203c and LTB4 receptor), and mediator releases (CysLT, LXA4, and tryptase) for the relevant time points determined. RESULTS All baseline parameters of CD203c and LTB4 receptor expressions, tryptase, CysLT, and LXA4 releases were similar in each group (p > 0.05). In group 1, CD203c started to be upregulated at the time of reactions during AD, and continued to be high for 3 months when compared to controls. All other study parameters were comparable with baseline and at the other time points in each group (p > 0.05). CONCLUSION Although basophils are active during the first 3 months of AD, no releases of CysLT, tryptase or LXA4 exist. Therefore, our results suggest that despite active basophils, inhibition of mediators can at least partly explain underlying the mechanism in the first three months of AD.
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Affiliation(s)
- Gülfem E Çelik
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Ömür Aydin
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Deniz Güloğlu
- Division of Pediatric Allergy and Immunology, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Derya Seçil
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Mehmet Melli
- Department of Medical Pharmacology, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Figen Doğu
- Division of Pediatric Allergy and Immunology, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Aydan Ikinciogullari
- Division of Pediatric Allergy and Immunology, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Betül A Sin
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Yavuz Demirel
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
| | - Zeynep Misirligil
- Department of Chest Disease, Division of Immunology and Allergy, Ankara University School of Medicine, Dikimevi/Ankara, Turkey
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Lai J, Furgeson S, Bjornstad P, You Z, Tommerdahl KL, Kendrick J. Leukotriene Antagonist Use is Associated With Lower Systolic Blood Pressure in Adults. Kidney Int Rep 2022; 8:373-375. [PMID: 36815112 PMCID: PMC9939346 DOI: 10.1016/j.ekir.2022.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 11/26/2022] Open
Affiliation(s)
- Jennifer Lai
- Division of Renal Disease and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Seth Furgeson
- Division of Renal Disease and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Petter Bjornstad
- Division of Renal Disease and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Department of Pediatrics, Section of Pediatric Endocrinology, Children’s Hospital Colorado and University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Zhiying You
- Division of Renal Disease and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kalie L. Tommerdahl
- Department of Pediatrics, Section of Pediatric Endocrinology, Children’s Hospital Colorado and University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jessica Kendrick
- Division of Renal Disease and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Correspondence: Jessica Kendrick, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, 12700 East, 19th Avenue, C281, Aurora, Colorado 80045, USA.
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Bellou A, Sennoun N, Aburawi EH, Jayaraj RL, Alper SL, Alfaki IA, Yasin J, Sekar S, Shafiuallah M, Al-Salam S, Nemmar A, Kazzam E, Mertes PM, Al-Hammadi S. Combined Treatment with KV Channel Inhibitor 4-Aminopyridine and either γ-Cystathionine Lyase Inhibitor β-Cyanoalanine or Epinephrine Restores Blood Pressure, and Improves Survival in the Wistar Rat Model of Anaphylactic Shock. Biology (Basel) 2022; 11:1455. [PMID: 36290359 DOI: 10.3390/biology11101455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/25/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022]
Abstract
Simple Summary Allergic diseases are presenting a constant increase all over the world and caused by such different substances as food, drugs, and pollens. Anaphylactic shock is the more severe complication of allergy which can induce death if the treatment is not administered immediately. Some patients do not respond to the recommended treatment, intra venous or intramuscular epinephrine. The pathophysiology of anaphylactic shock is still under investigation. The mediators released after the activation of mast cells and basophiles act on endothelial cells and smooth muscle cells, inducing the vasodilation responsible for hypotension and shock. Nitric oxide and hydrogen sulphide are both intracellular mediators that induce vasodilation. The role of potassium voltage dependent channels is suspected. We aimed to demonstrate the ability of a blocker of potassium voltage dependent channels, 4-aminopyridine, alone or in combination with inhibitors of cystathionine γ-lyase to restore blood pressure and improve survival in an ovalbumin rat anaphylactic shock model. The blockade of potassium voltage dependent channels alone or combined with inhibitors of cystathionine γ-lyase, dl-propargylglycine, or β-cyanoalanine restored blood pressure and improved survival. These findings suggest possible investigative treatment pathways for research concerning epinephrine-refractory anaphylactic shock in patients. Abstract The mechanism of anaphylactic shock (AS) remains incompletely understood. The potassium channel blocker 4-aminopyridine (4-AP), the inhibitors of cystathionine γ-lyase (ICSE), dl-propargylglycine (DPG) or β-cyanoalanine (BCA), and the nitric oxide (NO) synthase produce vasoconstriction and could be an alternative for the treatment of AS. The aim of this study was to demonstrate the ability of L-NAME, ICSE alone or in combination with 4-AP to restore blood pressure (BP) and improve survival in ovalbumin (OVA) rats AS. Experimental groups included non-sensitized Wistar rats (n = 6); AS (n = 6); AS (n = 10 per group) treated i.v. with 4-AP (AS+4-AP), epinephrine (AS+EPI), AS+DPG, AS+BCA, or with L-NAME (AS+L-NAME); or AS treated with drug combinations 4-AP+DPG, 4-AP+BCA, 4-AP+L-NAME, or 4-AP+EPI. AS was induced by i.v. OVA (1 mg). Treatments were administered i.v. one minute after AS induction. Mean arterial BP (MAP), heart rate (HR), and survival were monitored for 60 min. Plasma levels of histamine, prostaglandin E2 (PGE2) and F2 (PGF2α), leukotriene B4 and C4, angiotensin II, vasopressin, oxidative stress markers, pH, HCO3, PaO2, PaCO2, and K+ were measured. OVA induced severe hypotension and all AS rats died. Moreover, 4-AP, 4-AP+EPI, or 4-AP+BCA normalized both MAP and HR and increased survival. All sensitized rats treated with 4-AP alone or with 4-AP+BCA survived. The time-integrated MAP “area under the curve” was significantly higher after combined 4-AP treatment with ICSE. Metabolic acidosis was not rescued and NO, ICSE, and Kv inhibitors differentially alter oxidative stress and plasma levels of anaphylactic mediators. The AS-induced reduction of serum angiotensin II levels was prevented by 4-AP treatment alone or in combination with other drugs. Further, 4-AP treatment combined with EPI or with BCA also increased serum PGF2α, whereas only the 4-AP+EPI combination increased serum LTB4. Serum vasopressin and angiotensin II levels were increased by 4-AP treatment alone or in combination with other drugs. Moreover, 4-AP alone and in combination with inhibition of cystathionine γ-lyase or EPI normalizes BP, increases serum vasoconstrictor levels, and improves survival in the Wistar rat model of AS. These findings suggest possible investigative treatment pathways for research into epinephrine-refractory anaphylactic shock in patients.
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12
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Noureddine N, Hartling I, Wawrzyniak P, Srikanthan P, Lou PH, Lucchinetti E, Krämer SD, Rogler G, Zaugg M, Hersberger M. Lipid emulsion rich in n-3 polyunsaturated fatty acids elicits a pro-resolution lipid mediator profile in mouse tissues and in human immune cells. Am J Clin Nutr 2022; 116:786-797. [PMID: 35849016 DOI: 10.1093/ajcn/nqac131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/07/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Lipid emulsions are a key component of total parenteral nutrition (TPN) and are administered to patients who are unable to ingest their daily required calories orally. Lipid emulsions rich with n-6 (ω-6) PUFAs are known to cause parenteral nutrition-associated liver disease and have inflammatory side effects, whereas n-3 PUFA-rich emulsions have favourable clinical outcomes. OBJECTIVES The present study used targeted lipid mediator analysis to investigate the metabolism of a n-3 PUFA-rich lipid emulsion and a n-6 PUFA-rich lipid emulsion in a mouse model of TPN and in primary human monocyte-derived macrophages (MDMs) and CD4+ T cells. RESULTS Mice given n-3 PUFA-based TPN for 7 d had a less proinflammatory lipid mediator profile compared with those receiving n-6 PUFA-based TPN. This was characterized by higher concentrations of specialized pro-resolving mediators (SPMs) and endocannabinoids, including resolvin D (RvD) 1, maresin (MaR) 1, MaR2, protectin D1 (PD1), protectin DX (PDX), and the endocannabinoids eicosapentaenoyl ethanolamide (EPEA) and docosahexaenoyl ethanolamide (DHEA) in the liver and RvD1, 17R-RvD1, RvD2, RvD3, RvD5, MaR1, MaR2, PD1, PDX, and EPEA and DHEA in the spleen. The spleen was identified as a source of high lipid mediator and SPM formation as lipid mediator concentrations were on average 25-fold higher than in the liver. Additionally, n-3 PUFA-treated primary human MDMs produced RvD5 and the endocannabinoids EPEA and DHEA, which was associated with an increased IL-10 secretion. In contrast, primary human CD4+ T cells showed only an increase in SPM precursors and an increase in the endocannabinoids EPEA and DHEA, which was associated with reduced cytokine expression. CONCLUSIONS This demonstrates that lipid mediators, particularly SPMs and endocannabinoids from spleen, could play a key role in facilitating the favorable clinical outcomes associated with the use of n-3 PUFA-rich lipid emulsions in TPN.
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Affiliation(s)
- Nazek Noureddine
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.,Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Ivan Hartling
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.,Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Paulina Wawrzyniak
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Pakeerathan Srikanthan
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Phing-How Lou
- Department of Anesthesiology and Pain Medicine and Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Eliana Lucchinetti
- Department of Anesthesiology and Pain Medicine and Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Stefanie D Krämer
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Gerhard Rogler
- Department of Gastroenterology and Hepatology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Michael Zaugg
- Department of Anesthesiology and Pain Medicine and Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada.,Department of Pharmacology, University of Alberta, Edmonton, Alberta, Canada
| | - Martin Hersberger
- Division of Clinical Chemistry and Biochemistry, Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland.,Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Ley-Martínez JS, Ortega-Valencia JE, García-Barradas O, Jiménez-Fernández M, Uribe-Lam E, Vencedor-Meraz CI, Oliva-Ramírez J. Active Compounds in Zingiber officinale as Possible Redox Inhibitors of 5-Lipoxygenase Using an In Silico Approach. Int J Mol Sci 2022; 23:6093. [PMID: 35682770 PMCID: PMC9181373 DOI: 10.3390/ijms23116093] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 01/11/2023] Open
Abstract
5-Lipoxygenase (5-LOX) converts arachidonic acid to lipidic inflammatory mediators such as leukotrienes (LTs). In diseases such as asthma, LTs contribute to a physiopathology that could be reverted by blocking 5-LOX. Natural products with anti-inflammatory potential such as ginger have been used as nutraceuticals since ancient times. 6-Gingerol and 6-shogaol are the most abundant compounds in the ginger rhizome; they possess anti-inflammatory, antioxidant, and chemopreventive properties. In the present study, 6-gingerol and 6-shogaol structures were analyzed and compared with two commercial 5-LOX inhibitors (zileuton and atreleuton) and with other inhibitor candidates (3f, NDGA, CP 209, caffeic acid, and caffeic acid phenethyl ester (CAPE)). The pharmacokinetics and toxicological properties of 6-gingerol, 6-shogaol, and the other compounds were evaluated. Targeted molecular coupling was performed to identify the optimal catalytic pocket for 5-LOX inhibition. The results showed that 6-gingerol and 6-shogaol follow all of the recommended pharmacokinetic parameters. These compounds could be inhibitors of 5-LOX because they present specific interactions with the residues involved in molecular inhibition. The current study demonstrated the potential of 6-gingerol and 6-shogaol as anti-inflammatory agents that inhibit 5-LOX, as they present a high level of performance in the toxicological analysis and could be catabolized by the cytochrome p450 enzymatic complex; however, 6-gingerol was superior in safety compared to 6-shogaol.
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Affiliation(s)
- Jaqueline Stephanie Ley-Martínez
- Laboratorio de Ingeniería de Superficies, Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Lago de Guadalupe Km. 3.5, Margarita Maza de Juárez, Ciudad López Mateos 52926, Mexico, Mexico;
| | - Jose Erick Ortega-Valencia
- Laboratorio de Ingeniería de Superficies, Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Lago de Guadalupe Km. 3.5, Margarita Maza de Juárez, Ciudad López Mateos 52926, Mexico, Mexico;
| | - Oscar García-Barradas
- Instituto de Química Aplicada, Universidad Veracruzana, Av. Dr. Luis Castelazo s/n, Col. Industrial-Animas, Xalapa Enríquez 91190, Veracruz, Mexico;
| | - Maribel Jiménez-Fernández
- Centro de Investigación y Desarrollo en Alimentos, Universidad Veracruzana, Av. Dr. Luis Castelazo s/n, Col. Industrial-Animas, Xalapa Enríquez 91190, Veracruz, Mexico;
| | - Esmeralda Uribe-Lam
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, México, Epigmenio González 500, Fraccionamiento San Pablo, Querétaro 76130, Querétaro, Mexico;
| | - Carlos Iván Vencedor-Meraz
- Research and Development Department, Genolife-Información de vida S.A.P.I de C.V., Blvd. Paseo Rio Sonora, Hermosillo 83270, Sonora, Mexico;
| | - Jacqueline Oliva-Ramírez
- Laboratorio de Ingeniería de Superficies, Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Lago de Guadalupe Km. 3.5, Margarita Maza de Juárez, Ciudad López Mateos 52926, Mexico, Mexico;
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14
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Tang X, Teder T, Samuelsson B, Haeggström JZ. The IRE1α Inhibitor KIRA6 Blocks Leukotriene Biosynthesis in Human Phagocytes. Front Pharmacol 2022; 13:806240. [PMID: 35392553 PMCID: PMC8980214 DOI: 10.3389/fphar.2022.806240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 03/03/2022] [Indexed: 11/16/2022] Open
Abstract
The ER stress and Unfolded Protein Response (UPR) component inositol-requiring enzyme 1α (IRE1α) has been linked to inflammation and lipid mediator production. Here we report that the potent IRE1α inhibitor, KIRA6, blocks leukotriene biosynthesis in human phagocytes activated with lipopolysaccharide (LPS) plus N-formyl-methionyl-leucyl-phenylalanine (fMLP) or thapsigargin (Tg). The inhibition affects both leukotriene B4 (LTB4) and cysteinyl leukotriene (cys-LTs) production at submicromolar concentration. Macrophages made deficient of IRE1α were still sensitive to KIRA6 thus demonstrating that the compound’s effect on leukotriene production is IRE1α-independent. KIRA6 did not exhibit any direct inhibitory effect on key enzymes in the leukotriene pathway, as assessed by phospholipase A2 (PLA2), 5-lipoxygenase (5-LOX), LTA4 hydrolase (LTA4H), and LTC4 synthase (LTC4S) enzyme activity measurements in cell lysates. However, we find that KIRA6 dose-dependently blocks phosphorylation of p38 and ERK, mitogen-activated protein kinases (MAPKs) that have established roles in activating cytosolic PLA2α (cPLA2α) and 5-LOX. The reduction of p38 and ERK phosphorylation is associated with a decrease in cPLA2α phosphorylation and attenuated leukotriene production. Furthermore, KIRA6 inhibits p38 activity, and molecular modelling indicates that it can directly interact with the ATP-binding pocket of p38. This potent and unexpected, non-canonical effect of KIRA6 on p38 and ERK MAPKs and leukotriene biosynthesis may account for some of the immune-modulating properties of this widely used IRE1α inhibitor.
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Affiliation(s)
- Xiao Tang
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Tarvi Teder
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Bengt Samuelsson
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Jesper Z Haeggström
- Division of Physiological Chemistry II, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
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15
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Camera M, Canzano P, Brambilla M, Rovati GE. Montelukast Inhibits Platelet Activation Induced by Plasma From COVID-19 Patients. Front Pharmacol 2022; 13:784214. [PMID: 35211011 PMCID: PMC8863130 DOI: 10.3389/fphar.2022.784214] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/14/2022] [Indexed: 12/13/2022] Open
Abstract
Leukotrienes are important pro-inflammatory lipid mediators derived from the arachidonic acid metabolism. In particular, cysteinyl leukotrienes, namely LTC4, LTD4, and LTE4 are involved in many of the principal features of asthma, while more recently they have also been implicated in cardiovascular diseases. COVID-19 is characterized by an overwhelming state of inflammation, sometimes resulting in an acute respiratory distress syndrome. Furthermore, severe COVID-19 patients present an endothelial cell damage characterized by a hyperinflammatory/procoagulant state and a widespread thrombotic disease. Leukotriene receptor antagonists, such as montelukast, have long been proven to have an efficacy in asthma, while more recently they have been suggested to have a protective role also in cardiovascular diseases. As elevated levels of LTE4 have been detected in bronchoalveolar lavage of COVID-19 patients, and montelukast, in addition to its anti-inflammatory properties, has been suggested to have a protective role in cardiovascular diseases, we decided to investigate whether this drug could also affect the platelet activation characteristic of COVID-19 syndrome. In this contribution, we demonstrate that montelukast inhibits platelet activation induced by plasma from COVID-19 patients by preventing the surface expression of tissue factor (TF) and P-selectin, reducing the formation of circulating monocyte– and granulocyte–platelet aggregates, and, finally, in completely inhibiting the release of TFpos-circulating microvesicles. These data suggest the repurposing of montelukast as a possible auxiliary treatment for COVID-19 syndrome.
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Affiliation(s)
- Marina Camera
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy.,Centro Cardiologico Monzino IRCCS, Milan, Italy
| | | | | | - G Enrico Rovati
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
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16
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Park D, Ro M, Lee AJ, Kwak DW, Chung Y, Kim JH. Contributory Role of BLT2 in the Production of Proinflammatory Cytokines in Cecal Ligation and Puncture-Induced Sepsis. Mol Cells 2021; 44:893-899. [PMID: 34887363 PMCID: PMC8718367 DOI: 10.14348/molcells.2021.0159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/03/2021] [Accepted: 10/15/2021] [Indexed: 11/27/2022] Open
Abstract
BLT2 is a low-affinity receptor for leukotriene B4, a potent lipid mediator of inflammation generated from arachidonic acid via the 5-lipoxygenase pathway. The aim of this study was to investigate whether BLT2 plays any role in sepsis, a systemic inflammatory response syndrome caused by infection. A murine model of cecal ligation and puncture (CLP)-induced sepsis was used to evaluate the role of BLT2 in septic inflammation. In the present study, we observed that the levels of ligands for BLT2 (LTB4 [leukotriene B4] and 12(S)-HETE [12(S)-hydroxyeicosatetraenoic acid]) were significantly increased in the peritoneal lavage fluid and serum from mice with CLP-induced sepsis. We also observed that the levels of BLT2 as well as 5-LO and 12-LO, which are synthesizing enzymes for LTB4 and 12(S)-HETE, were significantly increased in lung and liver tissues in the CLP mouse model. Blockade of BLT2 markedly suppressed the production of sepsis-associated cytokines (IL-6 [interleukin-6], TNF-α [tumor necrosis factor alpha], and IL-1β [interleukin-1β] as well as IL-17 [interleukin-17]) and alleviated lung inflammation in the CLP group. Taken together, our results suggest that BLT2 cascade contributes to lung inflammation in CLP-induced sepsis by mediating the production of inflammatory cytokines. These findings suggest that BLT2 may be a potential therapeutic target for sepsis patients.
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Affiliation(s)
- Donghwan Park
- Department of Biotechnology, College of Life Sciences, Korea University, Seoul 02841, Korea
| | - MyungJa Ro
- Department of Biotechnology, College of Life Sciences, Korea University, Seoul 02841, Korea
| | - A-Jin Lee
- Department of Biotechnology, College of Life Sciences, Korea University, Seoul 02841, Korea
| | - Dong-Wook Kwak
- Department of Biotechnology, College of Life Sciences, Korea University, Seoul 02841, Korea
| | - Yunro Chung
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA
- Biodesign Center for Personalized Diagnostics, Arizona State University, Tempe, AZ 85281, USA
| | - Jae-Hong Kim
- Division of Life Sciences, College of Life Sciences, Korea University, Seoul 02841, Korea
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17
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Lessa RC, Alves FA, Fortunati E, Lu J. Oral Mucositis in Cancer and Potential Use of Omega-3 Free Fatty Acids in Its Management: A Review. Biomedicines 2021; 9:1531. [PMID: 34829760 DOI: 10.3390/biomedicines9111531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 12/01/2022] Open
Abstract
Oral mucositis (OM) is a painful condition caused by chemotherapeutic or radiotherapeutic cancer treatments, occurring in patients with different tumour characteristics and locations. OM greatly impacts a patient’s quality of life and cancer recovery. Current OM management strategies are not providing sufficient prevention and treatment; new approaches to injury management are needed. Studies on the benefit of omega-3 free fatty acids (FFA) in human health have increased significantly in recent years. FFA properties have been studied extensively, including their potential therapeutic use in inflammatory conditions. However, omega-3 FFA’s use as a supplementary treatment for OM has not been clinically tested. Preliminary evidence suggests that utilising FFA to manage OM could be a useful strategy for lesion management, assisting with healthy oral mucosa recovery. This review will describe the incidence, risk factors, biology of OM and the current treatment strategies, leading to a discussion of the utility of omega-3 FFA as a novel therapeutic agent for OM.
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18
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Ban GY, Kim SH, Park HS. Persistent Eosinophilic Inflammation in Adult Asthmatics with High Serum and Urine Levels of Leukotriene E 4. J Asthma Allergy 2021; 14:1219-1230. [PMID: 34675552 PMCID: PMC8520485 DOI: 10.2147/jaa.s325499] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/19/2021] [Indexed: 11/23/2022] Open
Abstract
Background Cysteinyl leukotrienes (CysLTs) are key mediators for bronchoconstriction, eosinophil recruitment and mucus production in the airways of asthmatic patients. To better understand the role of CysLTs in different asthma phenotypes, we compared the levels of arachidonic acid metabolites in relation to asthma control status and phenotypes in adult asthmatics on regular anti-asthma medications. Methods A total of 137 adult asthmatics (47 with aspirin-exacerbated respiratory disease [AERD] and 90 asthmatics with aspirin-tolerant asthma [ATA]) and 20 healthy controls were enrolled. Arachidonic acid metabolites in serum and urine were analyzed using LC-MS/MS methods, and clinical data, including asthma control status, exhaled NO (FeNO) and lung function tests, were collected. Results Urine LTE4 levels were significantly higher in AERD patients on inhaled corticosteroid-long-acting β2- agonist plus leukotriene receptor antagonist (LTRA) treatment than in ATA patients (P=0.001). No differences were found in the serum or urine levels of 15-HETE, TXB2, or PGF2α. High serum LTE4 levels were associated with lower FEV1% and uncontrolled status in AERD patients (P=0.006 and P=0.002, respectively), but not in ATA patients. Multivariate analysis demonstrated that blood eosinophil counts, FeNO levels and aspirin hypersensitivity were significant factors affecting urine LTE4 levels. Conclusion Despite LTRA treatment in AERD, the LTE4 levels remained high and showed close associations with blood eosinophilia, high FeNO levels and impaired disease control. Our real-world evidence indicates that control of asthma is not fully achieved by blocking the CysLT pathway with LTRA. Thus, introduction of treatment modalities targeting eosinophilia could be a better option for patients with high CysLTs.
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Affiliation(s)
- Ga-Young Ban
- Department of Pulmonary, Allergy and Critical Care Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.,Allergy and Clinical Immunology Research Center, Hallym University College of Medicine, Chuncheon, Korea
| | - Seung-Hyun Kim
- Translational Research Laboratory for Inflammatory Disease, Clinical Trial Center, Ajou University Medical Center, Suwon, 16499, Korea
| | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
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Shin JW, Kim J, Ham S, Choi SM, Lee CH, Lee JC, Kim JH, Cho SH, Kang HR, Kim YM, Chung DH, Chung Y, Bae YS, Bae YS, Roh TY, Kim T, Kim HY. A unique population of neutrophils generated by air pollutant-induced lung damage exacerbates airway inflammation. J Allergy Clin Immunol 2021; 149:1253-1269.e8. [PMID: 34653517 DOI: 10.1016/j.jaci.2021.09.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 08/26/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Diesel exhaust particles (DEPs) are the main component of traffic-related air pollution and have been implicated in the pathogenesis and exacerbation of asthma. However, the mechanism by which DEP exposure aggravates asthma symptoms remains unclear. OBJECTIVE This study aimed to identify a key cellular player of air pollutant-induced asthma exacerbation and development. METHODS We examined the distribution of innate immune cells in the murine models of asthma induced by house dust mite and DEP. Changes in immune cell profiles caused by DEP exposure were confirmed by flow cytometry and RNA-Seq analysis. The roles of sialic acid-binding, Ig-like lectin F (SiglecF)-positive neutrophils were further evaluated by adoptive transfer experiment and in vitro functional studies. RESULTS DEP exposure induced a unique population of lung granulocytes that coexpressed Ly6G and SiglecF. These cells differed phenotypically, morphologically, functionally, and transcriptionally from other SiglecF-expressing cells in the lungs. Our findings with murine models suggest that intratracheal challenge with DEPs induces the local release of adenosine triphosphate, which is a damage-associated molecular pattern signal. Adenosine triphosphate promotes the expression of SiglecF on neutrophils, and these SiglecF+ neutrophils worsen type 2 and 3 airway inflammation by producing high levels of cysteinyl leukotrienes and neutrophil extracellular traps. We also found Siglec8- (which corresponds to murine SiglecF) expressing neutrophils, and we found it in patients with asthma-chronic obstructive pulmonary disease overlap. CONCLUSION The SiglecF+ neutrophil is a novel and critical player in airway inflammation and targeting this population could reverse or ameliorate asthma.
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Affiliation(s)
- Jae Woo Shin
- Laboratory of Mucosal Immunology in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jihyun Kim
- Laboratory of Mucosal Immunology in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seokjin Ham
- Department of Life Sciences and Division of Integrative Biosciences & Biotechnology, Pohang University of Science & Technology (POSTECH), Pohang, Republic of Korea
| | - Sun Mi Choi
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Chang-Hoon Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jung Chan Lee
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ji Hyung Kim
- College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Sang-Heon Cho
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hye Ryun Kang
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - You-Me Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Doo Hyun Chung
- Department of Pathology, Seoul National University College of Medicine, Seoul, Republic of Korea; Laboratory of Immune Regulation in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yeonseok Chung
- Laboratory of Immune Regulation, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Yoe-Sik Bae
- Department of Biological Sciences, SRC Center for Immune Research on Non-lymphoid Organs, Sungkyunkwan University, Suwon, Republic of Korea; Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Yong-Soo Bae
- Department of Biological Sciences, SRC Center for Immune Research on Non-lymphoid Organs, Sungkyunkwan University, Suwon, Republic of Korea; Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Tae-Young Roh
- Department of Life Sciences and Division of Integrative Biosciences & Biotechnology, Pohang University of Science & Technology (POSTECH), Pohang, Republic of Korea; SysGenLab Inc, Pohang, Republic of Korea
| | - Taesoo Kim
- Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
| | - Hye Young Kim
- Laboratory of Mucosal Immunology in Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Mandujano A, Méndez-Ramírez I, Silveira-Torre LH. Systemic Sclerosis: Elevated Levels of Leukotrienes in Saliva and Plasma Are Associated with Vascular Manifestations and Nailfold Capillaroscopic Abnormalities. Int J Environ Res Public Health 2021; 18:ijerph182010841. [PMID: 34682587 PMCID: PMC8536043 DOI: 10.3390/ijerph182010841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/07/2021] [Accepted: 10/13/2021] [Indexed: 11/16/2022]
Abstract
The role of leukotrienes (LTs) in the pathogenesis of systemic sclerosis (SSc) needs clarification. We analyzed the association of salivary (sa) and plasma (p) levels (pg/mL) of cysteinyl-leukotrienes (CysLT) and LTB4 with SSc vascular manifestations and nailfold capillaroscopy (NFC) in a cross-sectional study. Patients and healthy controls were evaluated for vascular manifestations and NFC. LTs were compared between groups as follows: SSc with or SSc without vascular features and controls, and by NFC parameters. Twenty SSc patients and 16 volunteers were recruited; Raynaud's phenomenon (RP) history (SSc: saCysLT 99.4 ± 21.8 vs. controls: 23.05 ± 23.7, p = 0.01), RP at examination (SSc: saCysLT 129.3 ± 24.6 vs. controls: 23.05 ± 22.46, p = 0.01; pCysLT SSc: 87.5 ± 11.2 vs. controls: 32.37 ± 10.75, p = 0.002), capillary loss (saCysLT 138.6 ± 26.7 vs. 23.05 ± 21.6, p = 0.0007; saLTB4 3380.9 ± 426.6 vs. 1216.33 ± 346.1, p = 0.0005), "late" scleroderma pattern vs. controls (saCysLT 205.6 ± 32 vs. 23 ± 19.6, p = 0.0002; saLTB4 4564.9 ± 503.6 vs. 1216.3 ± 308.3; p < 0.0001) were all significant. Late patterns had higher levels (saCysLT, p = 0.002; LTB4 p = 0.0006) compared to active and early patterns (LTB4, p = 0.0006), and giant capillaries (p = 0.01) showed higher levels of LTs. Levels of pCysLT were higher in patients with RP at examination vs. patients without RP; saCysLT and LTB4 were higher in SSc group with vs. without capillary loss. LTs could be involved in the pathophysiology of vascular abnormalities. Further research is required to determine if blocking LTs could be a therapeutic target for SSc vascular manifestations.
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Affiliation(s)
- Angélica Mandujano
- Departamento de Atención a la Salud, Universidad Autónoma Metropolitana-Xochimilco, Mexico City 04960, Mexico
- Correspondence: (A.M.); (L.H.S.-T.)
| | - Ignacio Méndez-Ramírez
- Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Luis Humberto Silveira-Torre
- Departamento de Reumatología, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico
- Correspondence: (A.M.); (L.H.S.-T.)
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Marbach-Breitrück E, Rohwer N, Infante-Duarte C, Romero-Suarez S, Labuz D, Machelska H, Kutzner L, Schebb NH, Rothe M, Reddanna P, Weylandt KH, Wieler LH, Heydeck D, Kuhn H. Knock-In Mice Expressing a 15-Lipoxygenating Alox5 Mutant Respond Differently to Experimental Inflammation Than Reported Alox5-/- Mice. Metabolites 2021; 11:698. [PMID: 34677413 DOI: 10.3390/metabo11100698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/14/2022] Open
Abstract
Arachidonic acid 5-lipoxygenase (ALOX5) is the key enzyme in the biosynthesis of pro-inflammatory leukotrienes. We recently created knock-in mice (Alox5-KI) which express an arachidonic acid 15-lipoxygenating Alox5 mutant instead of the 5-lipoxygenating wildtype enzyme. These mice were leukotriene deficient but exhibited an elevated linoleic acid oxygenase activity. Here we characterized the polyenoic fatty acid metabolism of these mice in more detail and tested the animals in three different experimental inflammation models. In experimental autoimmune encephalomyelitis (EAE), Alox5-KI mice displayed an earlier disease onset and a significantly higher cumulative incidence rate than wildtype controls but the clinical score kinetics were not significantly different. In dextran sodium sulfate-induced colitis (DSS) and in the chronic constriction nerve injury model (CCI), Alox5-KI mice performed like wildtype controls with similar genetic background. These results were somewhat surprising since in previous loss-of-function studies targeting leukotriene biosynthesis (Alox5−/− mice, inhibitor studies), more severe inflammatory symptoms were observed in the EAE model but the degree of inflammation in DSS colitis was attenuated. Taken together, our data indicate that these mutant Alox5-KI mice respond differently in two models of experimental inflammation than Alox5−/− animals tested previously in similar experimental setups.
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Mullol J, Boyce J, Dahlén SE, Dahlén B, Picado C, Bobolea I. Eicosanoid dysregulation and type 2 inflammation in AERD. J Allergy Clin Immunol 2021; 148:1157-1160. [PMID: 34464635 DOI: 10.1016/j.jaci.2021.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/02/2021] [Accepted: 08/05/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Joaquim Mullol
- Rhinology Unit & Smell Clinic, ENT Department, Hospital Clinic Barcelona, Barcelona, Spain; Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Barcelona, Spain.
| | - Joshua Boyce
- Allergy and Immunology Division, Brigham and Women's Hospital, Boston, Mass
| | - Sven-Erik Dahlén
- Experimental Asthma and Allergy Research, Institute of Environmental Medicine (IMM), Karolinska Institutet, Stockholm, Sweden; Department of Respiratory Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Barbro Dahlén
- Experimental Asthma and Allergy Research, Institute of Environmental Medicine (IMM), Karolinska Institutet, Stockholm, Sweden; Department of Respiratory Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Cesar Picado
- Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Barcelona, Spain; University of Barcelona, Barcelona, Spain
| | - Irina Bobolea
- Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, Barcelona, Spain; CIBER of Respiratory Diseases (CIBERES), Barcelona, Spain; Allergy Section, Pulmonology & Allergy Department, Hospital Clinic Barcelona, Barcelona, Spain
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23
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Giménez-Bastida JA, González-Sarrías A, Laparra-Llopis JM, Schneider C, Espín JC. Targeting Mammalian 5-Lipoxygenase by Dietary Phenolics as an Anti-Inflammatory Mechanism: A Systematic Review. Int J Mol Sci 2021; 22:7937. [PMID: 34360703 PMCID: PMC8348464 DOI: 10.3390/ijms22157937] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022] Open
Abstract
5-Lipoxygenase (5-LOX) plays a key role in inflammation through the biosynthesis of leukotrienes and other lipid mediators. Current evidence suggests that dietary (poly)phenols exert a beneficial impact on human health through anti-inflammatory activities. Their mechanisms of action have mostly been associated with the modulation of pro-inflammatory cytokines (TNF-α, IL-1β), prostaglandins (PGE2), and the interaction with NF-κB and cyclooxygenase 2 (COX-2) pathways. Much less is known about the 5-lipoxygenase (5-LOX) pathway as a target of dietary (poly)phenols. This systematic review aimed to summarize how dietary (poly)phenols target the 5-LOX pathway in preclinical and human studies. The number of studies identified is low (5, 24, and 127 human, animal, and cellular studies, respectively) compared to the thousands of studies focusing on the COX-2 pathway. Some (poly)phenolics such as caffeic acid, hydroxytyrosol, resveratrol, curcumin, nordihydroguaiaretic acid (NDGA), and quercetin have been reported to reduce the formation of 5-LOX eicosanoids in vitro. However, the in vivo evidence is inconclusive because of the low number of studies and the difficulty of attributing effects to (poly)phenols. Therefore, increasing the number of studies targeting the 5-LOX pathway would largely expand our knowledge on the anti-inflammatory mechanisms of (poly)phenols.
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Affiliation(s)
- Juan Antonio Giménez-Bastida
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
| | - Antonio González-Sarrías
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
| | - José Moisés Laparra-Llopis
- Group of Molecular Immunonutrition in Cancer, Madrid Institute for Advanced Studies in Food (IMDEA-Food), 28049 Madrid, Spain;
| | - Claus Schneider
- Division of Clinical Pharmacology, Department of Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN 37232, USA;
| | - Juan Carlos Espín
- Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Department Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Campus de Espinardo, 30100 Murcia, Spain;
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24
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Bottemanne P, Paquot A, Ameraoui H, Guillemot-Legris O, Alhouayek M, Muccioli GG. 25-Hydroxycholesterol metabolism is altered by lung inflammation, and its local administration modulates lung inflammation in mice. FASEB J 2021; 35:e21514. [PMID: 33734509 DOI: 10.1096/fj.202002555r] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/18/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022]
Abstract
Inflammation is a critical component of many lung diseases including asthma and acute lung injury (ALI). Using high-performance liquid chromatography-mass spectrometry, we quantified the levels of oxysterols in two different murine models of lung diseases. These are lipid mediators derived from cholesterol and known to modulate immunity and inflammation. Interestingly, 25-hydroxycholesterol (25-OHC) was the only oxysterol with altered levels during lung inflammation, and its levels were differently affected according to the model. Therefore, we sought to assess how this oxysterol would affect lung inflammatory responses. In a model of lipopolysaccharide (LPS)-induced acute lung inflammation, 25-OHC levels were increased, and most of the hallmarks of the model (eg, leukocyte recruitment, mRNA expression, and secretion of inflammatory cytokines) were decreased following its intratracheal administration. We also found that, when administered in the lung, 25-OHC is metabolized locally into 25-hydroxycholesterol-3-sulfate and 7α,25-dihydroxycholesterol. Their administration in the lungs did not recapitulate all the effects of 25-OHC. Conversely, in a model of allergic asthma induced by intranasal administration of house dust mites (HDM), 25-OHC levels were decreased, and when intranasally administered, this oxysterol worsened the hallmarks of the model (eg, leukocyte recruitment, tissue remodeling [epithelium thickening and peribranchial fibrosis], and cytokine expression) and induced changes in leukotriene levels. Ex vivo, we found that 25-OHC decreases LPS-induced primary alveolar macrophage activation while having no effect on neutrophil activation. Its sulfated metabolite, 25-hydroxycholesterol-3-sulfate, decreased neutrophil, but not macrophage activation. Taken together, our data support a differential role of 25-OHC in ALI and allergic inflammation models.
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Affiliation(s)
- Pauline Bottemanne
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Adrien Paquot
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Hafsa Ameraoui
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Owein Guillemot-Legris
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Mireille Alhouayek
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Giulio G Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
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Sehanobish E, Asad M, Barbi M, Porcelli SA, Jerschow E. Aspirin Actions in Treatment of NSAID-Exacerbated Respiratory Disease. Front Immunol 2021; 12:695815. [PMID: 34305932 PMCID: PMC8297972 DOI: 10.3389/fimmu.2021.695815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/07/2021] [Indexed: 12/21/2022] Open
Abstract
Non-steroidal Anti-inflammatory drugs (NSAID)-exacerbated respiratory disease (N-ERD) is characterized by nasal polyposis, chronic rhinosinusitis, adult-onset asthma and hypersensitive reactions to cyclooxygenase-1 (COX-1) inhibitors. Among the available treatments for this disease, a combination of endoscopic sinus surgery followed by aspirin desensitization and aspirin maintenance therapy has been an effective approach. Studies have shown that long-term aspirin maintenance therapy can reduce the rate of nasal polyp recurrence in patients with N-ERD. However, the exact mechanism by which aspirin can both trigger and suppress airway disease in N-ERD remains poorly understood. In this review, we summarize current knowledge of aspirin effects in N-ERD, cardiovascular disease, and cancer, and consider potential mechanistic pathways accounting for the effects of aspirin in N-ERD.
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Affiliation(s)
- Esha Sehanobish
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Mohammad Asad
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Mali Barbi
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Steven A. Porcelli
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Elina Jerschow
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, United States
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26
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Jin J, Boeglin WE, Brash AR. Analysis of 12/15-lipoxygenase metabolism of EPA and DHA with special attention to authentication of docosatrienes. J Lipid Res 2021; 62:100088. [PMID: 34022182 PMCID: PMC8219989 DOI: 10.1016/j.jlr.2021.100088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 11/14/2022] Open
Abstract
A proposed beneficial impact of highly unsaturated “fish oil” fatty acids is their conversion by lipoxygenase (LOX) enzymes to specialized proresolving lipid mediators, including 12/15-LOX products from EPA and DHA. The transformations of DHA include formation of docosatrienes, named for the distinctive conjugated triene of the double bonds. To further the understanding of biosynthetic pathways and mechanisms, herein we meld together biosynthesis and NMR characterization of the unstable leukotriene A (LTA)-related epoxide intermediates formed by recombinant human 15-LOX-1, along with identification of the stable enzymatic products, and extend the findings into the 12/15-LOX metabolism in resident murine peritoneal macrophages. Oxygenation of EPA by 15-LOX-1 converts the initial 15S-hydroperoxide to 14S,15S-trans-epoxy-5Z,8Z,10E,12E,17Z-EPA (appearing as its 8,15-diol hydrolysis products) and mixtures of dihydroperoxy fatty acids, while mainly the epoxide hydrolysis products are evident in the murine cells. DHA also undergoes transformations to epoxides and dihydroperoxides by 15-LOX-1, resulting in a mixture of 10,17-dihydro(pero)xy derivatives (docosatrienes) and minor 7S,17S- and 14,17S-dihydroperoxides. The 10,17S-dihydroxy hydrolysis products of the LTA-related epoxide intermediate dominate the product profile in mouse macrophages, whereas (neuro)protectin D1, the leukotriene B4-related derivative with trans,trans,cis conjugated triene, was undetectable. In this study, we emphasize the utility of UV spectral characteristics for product identification, being diagnostic of the different double bond configurations and hydroxy fatty acid functionality versus hydroperoxide. LC-MS is not definitive for configurational isomers. Secure identification is based on chromatographic retention times, comparison with authentic standards, and the highly distinctive UV spectra.
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Affiliation(s)
- Jing Jin
- Department of Pharmacology and the Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - William E Boeglin
- Department of Pharmacology and the Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA
| | - Alan R Brash
- Department of Pharmacology and the Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, USA.
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Anderson CS, Chirkova T, Slaunwhite CG, Qiu X, Walsh EE, Anderson LJ, Mariani TJ. CX3CR1 Engagement by Respiratory Syncytial Virus Leads to Induction of Nucleolin and Dysregulation of Cilia-related Genes. J Virol 2021; 95:JVI. [PMID: 33731455 DOI: 10.1128/JVI.00095-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Respiratory syncytial virus (RSV) contains a conserved CX3C motif on the ectodomain of the G-protein. The motif has been indicated as facilitating attachment of the virus to the host initiating infection via the human CX3CR1 receptor. The natural CX3CR1 ligand, CX3CL1, has been shown to induce signaling pathways resulting in transcriptional changes in the host cells. We hypothesize that binding of RSV to CX3CR1 via CX3C leads to transcriptional changes in host epithelial cells. Using transcriptomic analysis, the effect of CX3CR1 engagement by RSV was investigated. Normal human bronchial epithelial (NHBE) cells were infected with RSV virus containing either wildtype G-protein, or a mutant virus containing a CX4C mutation in the G-protein. RNA sequencing was performed on mock and 4-days-post-infected cultures. NHBE cultures were also treated with purified recombinant wild-type A2 G-protein. Here we report that RSV infection resulted in significant changes in the levels 766 transcripts. Many nuclear associated proteins were upregulated in the WT group, including nucleolin. Alternatively, cilia-associated genes, including CC2D2A and CFAP221 (PCDP1), were downregulated. The addition of recombinant G-protein to the culture lead to the suppression of cilia-related genes while also inducing nucleolin. Mutation of the CX3C motif (CX4C) reversed these effects on transcription decreasing nucleolin induction and lessening the suppression of cilia-related transcripts in culture. Furthermore, immunohistochemical staining demonstrated decreases in in ciliated cells and altered morphology. Therefore, it appears that engagement of CX3CR1 leads to induction of genes necessary for RSV entry as well as dysregulation of genes associated with cilia function.ImportanceRespiratory Syncytial Virus (RSV) has an enormous impact on infants and the elderly including increased fatality rates and potential for causing lifelong lung problems. Humans become infected with RSV through the inhalation of viral particles exhaled from an infected individual. These virus particles contain specific proteins that the virus uses to attach to human ciliated lung epithelial cells, initiating infection. Two viral proteins, G-protein and F-protein, have been shown to bind to human CX3CR1and nucleolin, respectively. Here we show that the G-protein induces nucleolin and suppresses gene transcripts specific to ciliated cells. Furthermore, we show that mutation of the CX3C-motif on the G-protein, CX4C, reverses these transcriptional changes.
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Knuplez E, Sturm EM, Marsche G. Emerging Role of Phospholipase-Derived Cleavage Products in Regulating Eosinophil Activity: Focus on Lysophospholipids, Polyunsaturated Fatty Acids and Eicosanoids. Int J Mol Sci 2021; 22:4356. [PMID: 33919453 PMCID: PMC8122506 DOI: 10.3390/ijms22094356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
Eosinophils are important effector cells involved in allergic inflammation. When stimulated, eosinophils release a variety of mediators initiating, propagating, and maintaining local inflammation. Both, the activity and concentration of secreted and cytosolic phospholipases (PLAs) are increased in allergic inflammation, promoting the cleavage of phospholipids and thus the production of reactive lipid mediators. Eosinophils express high levels of secreted phospholipase A2 compared to other leukocytes, indicating their direct involvement in the production of lipid mediators during allergic inflammation. On the other side, eosinophils have also been recognized as crucial mediators with regulatory and homeostatic roles in local immunity and repair. Thus, targeting the complex network of lipid mediators offer a unique opportunity to target the over-activation and 'pro-inflammatory' phenotype of eosinophils without compromising the survival and functions of tissue-resident and homeostatic eosinophils. Here we provide a comprehensive overview of the critical role of phospholipase-derived lipid mediators in modulating eosinophil activity in health and disease. We focus on lysophospholipids, polyunsaturated fatty acids, and eicosanoids with exciting new perspectives for future drug development.
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Affiliation(s)
| | | | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (E.K.); (E.M.S.)
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29
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Soni KK, Meshram D, Lawal TO, Patel U, Mahady GB. Fractions of Boswellia Serrata Suppress LTA 4, LTC 4, Cyclooxygenase-2 Activities and mRNA in HL-60 Cells and Reduce Lung Inflammation in BALB/c Mice. Curr Drug Discov Technol 2021; 18:95-104. [PMID: 31985381 DOI: 10.2174/1570163817666200127112928] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/04/2019] [Accepted: 10/28/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Purified fractions from a Boswellia serrata Roxb. Ex. Colebr. (Burseraceae) extract (ETOH and DCM) contain biologically active compounds that are well known for having inflammation inhibitory properties. In this work, the purified fractions were tested in-vitro for LTC4, LTA4 and COX-2 activities using ELISA and qPCR was performed to determine gene regulation in human leukemia (HL-60) Cells. Two D-imaging tomography was performed to determine the anti-inflammatory activities of the fractions in BALB/c mouse model of lung inflammation. OBJECTIVE To evaluate anti-inflammatory activities of bioactive compounds of Boswellia serrata purified fractions. METHODS In-vitro MTT assay was performed in HL-60 cell lines for measuring the toxicity/ viability of the cells. ELISA tests were performed for evaluating LTA4, LTC4 and COX-2 activities. qPCR was performed to evaluate the expression of mRNA in HL-60 cells. In-vivo experiments were performed in OVA sensitized and challenged BALB/c mice at two doses of Boswellia serrata purified fraction containing 6% Boswellic acid of 50 and 100mg/kg body weight were given orally and the standard drug dexamethasone (DXA, 4 mg/kg body weight) and reduction in lung inflammation was assessed by using an IVIS Xenogen in-vivo fluorescence imaging system. RESULTS A purified fraction of Boswellia serrata ETOH extracts reduced leukotriene-C4-synthase activity by 52%, leuktotriene-A4-hydrolase activity by 22% and COX-2 activity by 99% with an IC50 of 12.5μg/ml. Intragastric administration of the purified fraction of Boswellia serrata at two doses of 50mg/kg b.w. and 100mg/kg b.w., respectively along with 2-3% HPMC resulted in a ~51% (P value <0.01) reduction in OVA induced lung inflammation in BALB/c mice as observed by imaging tomography. Treatment of the OVA challenged mice with standard drug dexamethasone (DXA) reduced inflammation by ~66% with significant value (P<0.0001). CONCLUSION The present study describes that Boswellia serrata ethanolic extracts purified fraction (ETOH-BS) possess significant anti-inflammatory activities in HL-60 and in BALB/c and further supports for its use as Ayurvedic medicines traditionally in the treatment of lung disorders including allergy and asthma.
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Affiliation(s)
- Kapil K Soni
- Clinical Pharmacognosy Lab., Department of Pharmacy Practice, WHO/PAHO Collaborating Centre for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, IL 60612, United States
| | - Deepak Meshram
- Pharmacogenomics Lab., Department of Biosciences, Barkatullah University, Bhopal, Madhya Pradesh 462026, India
| | - Temitope O Lawal
- Clinical Pharmacognosy Lab., Department of Pharmacy Practice, WHO/PAHO Collaborating Centre for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, IL 60612, United States
| | - Udeshi Patel
- Clinical Pharmacognosy Lab., Department of Pharmacy Practice, WHO/PAHO Collaborating Centre for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, IL 60612, United States
| | - Gail B Mahady
- Clinical Pharmacognosy Lab., Department of Pharmacy Practice, WHO/PAHO Collaborating Centre for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, IL 60612, United States
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Gorica E, Calderone V. Arachidonic Acid Derivatives and Neuroinflammation. CNS Neurol Disord Drug Targets 2021; 21:118-129. [PMID: 33557740 DOI: 10.2174/1871527320666210208130412] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/29/2020] [Accepted: 09/29/2020] [Indexed: 11/22/2022]
Abstract
Neuroinflammation is characterized by dysregulated inflammatory responses localized within the brain and spinal cord. Neuroinflammation plays a pivotal role in the onset of several neurodegenerative disorders and is considered a typical feature of these disorders. Microglia perform primary immune surveillance and macrophage-like activities within the central nervous system. Activated microglia are predominant players in the central nervous system response to damage related to stroke, trauma, and infection. Moreover, microglial activation per se leads to a proinflammatory response and oxidative stress. During the release of cytokines and chemokines, cyclooxygenases and phospholipase A2 are stimulated. Elevated levels of these compounds play a significant role in immune cell recruitment into the brain. Cyclic phospholipase A2 plays a fundamental role in the production of prostaglandins by releasing arachidonic acid. In turn, arachidonic acid is biotransformed through different routes into several mediators that are endowed with pivotal roles in the regulation of inflammatory processes. Some experimental models of neuroinflammation exhibit an increase in cyclic phospholipase A2, leukotrienes, and prostaglandins such as prostaglandin E2, prostaglandin D2, or prostacyclin. However, findings on the role of the prostacyclin receptors have revealed that their signalling suppresses Th2-mediated inflammatory responses. In addition, other in vitro evidence suggests that prostaglandin E2 may inhibit the production of some inflammatory cytokines, attenuating inflammatory events such as mast cell degranulation or inflammatory leukotriene production. Based on these conflicting experimental data, the role of arachidonic acid derivatives in neuroinflammation remains a challenging issue.
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Affiliation(s)
- Era Gorica
- Department of Pharmacy, University of Pisa, Pisa. Italy
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Phillips OA, Bosso MA, Ezeamuzie CI. Synthesis and structure-activity relationships of novel 5-(hydroxamic acid)methyl oxazolidinone derivatives as 5-lipoxygenase inhibitors. J Enzyme Inhib Med Chem 2021; 35:1471-1482. [PMID: 32635785 PMCID: PMC7470027 DOI: 10.1080/14756366.2020.1786082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Oxazolidinone hydroxamic acid derivatives were synthesised and evaluated for inhibitory activity against leukotriene (LT) biosynthesis in three in vitro cell-based test systems and on direct inhibition of recombinant human 5-lipoxygenase (5-LO). Thirteen of the 19 compounds synthesised were considered active ((50% inhibitory concentration (IC50) ≤ 10 µM in two or more test systems)). Increasing alkyl chain length on the hydroxamic acid moiety enhanced activity and morpholinyl-containing derivatives were more active than N-acetyl-piperizinyl derivatives. The IC50 values in cell-based assay systems were comparable to those obtained by direct inhibition of 5-LO activity, confirming that the compounds are direct inhibitors of 5-LO. Particularly, compounds PH-249 and PH-251 had outstanding potencies (IC50 < 1 µM), comparable to that of the prototype 5-LO inhibitor, zileuton. Pronounced in vivo activity was demonstrated in zymosan-induced peritonitis in mice. These novel oxazolidinone hydroxamic acid derivatives are, therefore, potent 5-LO inhibitors with potential application as anti-allergic and anti-inflammatory agents.
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Affiliation(s)
- Oludotun A Phillips
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Kuwait University, Safat, Kuwait
| | - Mira A Bosso
- Faculty of Medicine, Department of Pharmacology & Toxicology, Kuwait University, Safat, Kuwait
| | - Charles I Ezeamuzie
- Faculty of Medicine, Department of Pharmacology & Toxicology, Kuwait University, Safat, Kuwait
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Sokolowska M, Rovati GE, Diamant Z, Untersmayr E, Schwarze J, Lukasik Z, Sava F, Angelina A, Palomares O, Akdis CA, O’Mahony L, Sanak M, Dahlen S, Woszczek G. Current perspective on eicosanoids in asthma and allergic diseases: EAACI Task Force consensus report, part I. Allergy 2021; 76:114-130. [PMID: 32279330 DOI: 10.1111/all.14295] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/13/2020] [Accepted: 03/25/2020] [Indexed: 12/25/2022]
Abstract
Eicosanoids are biologically active lipid mediators, comprising prostaglandins, leukotrienes, thromboxanes, and lipoxins, involved in several pathophysiological processes relevant to asthma, allergies, and allied diseases. Prostaglandins and leukotrienes are the most studied eicosanoids and established inducers of airway pathophysiology including bronchoconstriction and airway inflammation. Drugs inhibiting the synthesis of lipid mediators or their effects, such as leukotriene synthesis inhibitors, leukotriene receptors antagonists, and more recently prostaglandin D2 receptor antagonists, have been shown to modulate features of asthma and allergic diseases. This review, produced by an European Academy of Allergy and Clinical Immunology (EAACI) task force, highlights our current understanding of eicosanoid biology and its role in mediating human pathology, with a focus on new findings relevant for clinical practice, development of novel therapeutics, and future research opportunities.
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Affiliation(s)
- Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Christine Kühne ‐ Center for Allergy Research and Education (CK‐CARE) Davos Switzerland
| | - G. Enrico Rovati
- Department of Pharmaceutical Sciences University of Milan Milan Italy
| | - Zuzana Diamant
- Department of Respiratory Medicine & Allergology Skane University Hospital Lund Sweden
- Department of Respiratory Medicine First Faculty of Medicine Charles University and Thomayer Hospital Prague Czech Republic
| | - Eva Untersmayr
- Institute of Pathophysiology and Allergy Research Center for Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Jargen Schwarze
- Child Life and Health and Centre for Inflammation Research The University of Edinburgh Edinburgh UK
| | - Zuzanna Lukasik
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
| | - Florentina Sava
- London North Genomic Laboratory Hub Great Ormond Street Hospital for Children NHS Foundation Trust London UK
| | - Alba Angelina
- Department of Biochemistry and Molecular Biology School of Chemistry Complutense University Madrid Spain
| | - Oscar Palomares
- Department of Biochemistry and Molecular Biology School of Chemistry Complutense University Madrid Spain
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Christine Kühne ‐ Center for Allergy Research and Education (CK‐CARE) Davos Switzerland
| | - Liam O’Mahony
- Departments of Medicine and Microbiology APC Microbiome Ireland University College Cork Cork Ireland
| | - Marek Sanak
- Department of Medicine Jagiellonian University Medical College Krakow Poland
| | - Sven‐Erik Dahlen
- Institute of Environmental Medicine Karolinska Institute Stockholm Sweden
- Centre for Allergy Research Karolinska Institute Stockholm Sweden
| | - Grzegorz Woszczek
- MRC/Asthma UK Centre in Allergic Mechanisms of Asthma School of Immunology & Microbial Sciences King's College London London UK
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Aigner L, Pietrantonio F, Bessa de Sousa DM, Michael J, Schuster D, Reitsamer HA, Zerbe H, Studnicka M. The Leukotriene Receptor Antagonist Montelukast as a Potential COVID-19 Therapeutic. Front Mol Biosci 2020; 7:610132. [PMID: 33392263 PMCID: PMC7773944 DOI: 10.3389/fmolb.2020.610132] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/17/2020] [Indexed: 01/08/2023] Open
Abstract
The emergence and global impact of COVID-19 has focused the scientific and medical community on the pivotal influential role of respiratory viruses as causes of severe pneumonia, on the understanding of the underlying pathomechanisms, and on potential treatment for COVID-19. The latter concentrates on four different strategies: (i) antiviral treatments to limit the entry of the virus into the cell and its propagation, (ii) anti-inflammatory treatment to reduce the impact of COVID-19 associated inflammation and cytokine storm, (iii) treatment using cardiovascular medication to reduce COVID-19 associated thrombosis and vascular damage, and (iv) treatment to reduce the COVID-19 associated lung injury. Ideally, effective COVID-19 treatment should target as many of these mechanisms as possible arguing for the search of common denominators as potential drug targets. Leukotrienes and their receptors qualify as such targets: they are lipid mediators of inflammation and tissue damage and well-established targets in respiratory diseases like asthma. Besides their role in inflammation, they are involved in various other aspects of lung pathologies like vascular damage, thrombosis, and fibrotic response, in brain and retinal damages, and in cardiovascular disease. In consequence, leukotriene receptor antagonists might be potential candidates for COVID-19 therapeutics. This review summarizes the current knowledge on the potential involvement of leukotrienes in COVID-19, and the rational for the use of the leukotriene receptor antagonist montelukast as a COVID-19 therapeutic.
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Affiliation(s)
- Ludwig Aigner
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University Salzburg, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University Salzburg, Salzburg, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | | | - Diana Marisa Bessa de Sousa
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University Salzburg, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Johanna Michael
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University Salzburg, Salzburg, Austria.,Spinal Cord Injury and Tissue Regeneration Center Salzburg (SCI-TReCS), Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Daniela Schuster
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Herbert Anton Reitsamer
- Department of Ophthalmology and Optometry, University Clinic Salzburg, Paracelsus Medical University, Salzburg, Austria.,Research Program of Experimental Ophthalmology and Glaucoma Research, Paracelsus Medical University Salzburg, Salzburg, Austria
| | | | - Michael Studnicka
- Department of Pulmonary Medicine, University Clinic Salzburg, Paracelsus Medical University Salzburg, Salzburg, Austria
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YALÇIN KEHRİBAR D, CİHANGİROĞLU M, SEHMEN E, AVCI B, ÇAPRAZ M, BORAN M, GÜNAYDIN C, ÖZGEN M. The assessment of the serum levels of TWEAK and prostaglandin F2α in COVID – 19. Turk J Med Sci 2020; 50:1786-1791. [PMID: 32979900 PMCID: PMC7778458 DOI: 10.3906/sag-2006-96] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/26/2020] [Indexed: 01/13/2023] Open
Abstract
Background/aim It is claimed that aberrant immune response has a more important role than the cytopathic effect of the virus in the morbidity and mortality of the coronavirus disease 2019 (COVID-19). We aimed to investigate the possible roles of tumor necrosis factor-like weak inducer of apoptosis (TWEAK)/Fn14 pathway and leukotrienes (LT) in uncontrolled immune response that occurs in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Materials and methods This study included 25 asymptomatic patients and 35 patients with lung involvement who were diagnosed with COVID-19 as well as 22 healthy volunteers. Lung involvement was determined using computed-tomography. Serum TWEAK, LTE4, and prostaglandin F2α (PGF2α) levels were determined. Results Compared with the healthy control group, TWEAK, LTE4, and PGF2α levels were higher in the group of SARS-CoV-2 infection without lung involvement. In the group of SARS-CoV-2 infection with lung involvement, age, fibrinogen, sedimentation, C-reactive protein and ferritin, TWEAK, LTE4, and PGF2α levels were higher, and lymphocyte levels were lower compared with the asymptomatic group. Conclusions In the study, TWEAK and LTE4 levels increased in cases with COVID-19. These results support that TWEAK/Fn14 pathway and LT may involved in the pathology of aberrant immune response against SARS-CoV-2. Inhibition of each of these pathways may be a potential target in the treatment of COVID-19.
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Affiliation(s)
- Demet YALÇIN KEHRİBAR
- Department of Internal Medicine, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
| | - Mustafa CİHANGİROĞLU
- Department of Infection Diseases and Clinical Microbiology, Faculty of Medicine, Amasya University, AmasyaTurkey
| | - Emine SEHMEN
- Department of Infection Diseases, Gazi State Hospital, SamsunTurkey
| | - Bahattin AVCI
- Department of Medical Biochemistry, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
| | - Mustafa ÇAPRAZ
- Department of Internal Medicine, Faculty of Medicine, Amasya University, AmasyaTurkey
| | - Maruf BORAN
- Department of Intensive Care Unit, Faculty of Medicine, Amasya University, AmasyaTurkey
| | - Caner GÜNAYDIN
- Department of Pharmacology, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
| | - Metin ÖZGEN
- Department of Rheumatology, Faculty of Medicine, Ondokuz Mayıs University, SamsunTurkey
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Meshram D, Bhardwaj K, Rathod C, Mahady GB, Soni KK. The Role of Leukotrienes Inhibitors in the Management of Chronic Inflammatory Diseases. ACTA ACUST UNITED AC 2020; 14:15-31. [PMID: 32000655 DOI: 10.2174/1872213x14666200130095040] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 12/19/2019] [Accepted: 01/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Leukotrienes are powerful mediators of inflammation and interact with specific receptors in target cell membrane to initiate an inflammatory response. Thus, Leukotrienes (LTs) are considered to be potent mediators of inflammatory diseases including allergic rhinitis, inflammatory bowel disease and asthma. Leukotriene B4 and the series of cysteinyl leukotrienes (C4, D4, and E4) are metabolites of arachidonic acid metabolism that cause inflammation. The cysteinyl LTs are known to increase vascular permeability, bronco-constriction and mucus secretion. OBJECTIVES To review the published data for leukotriene inhibitors of plant origin and the recent patents for leukotriene inhibitors, as well as their role in the management of inflammatory diseases. METHODS Published data for leukotrienes antagonists of plant origin were searched from 1938 to 2019, without language restrictions using relevant keywords in both free text and Medical Subject Headings (MeSH terms) format. Literature and patent searches in the field of leukotriene inhibitors were carried out by using numerous scientific databases including Science Direct, PubMed, MEDLINE, Google Patents, US Patents, US Patent Applications, Abstract of Japan, German Patents, European Patents, WIPO and NAPRALERT. Finally, data from these information resources were analyzed and reported in the present study. RESULTS Currently, numerous anti-histaminic medicines are available including chloropheneremine, brompheniramine, cetirizine, and clementine. Furthermore, specific leukotriene antagonists from allopathic medicines are also available including zileuton, montelukast, pranlukast and zafirlukast and are considered effective and safe medicines as compared to the first generation medicines. The present study reports leukotrienes antagonistic agents of natural products and certain recent patents that could be an alternative medicine in the management of inflammation in respiratory diseases. CONCLUSION The present study highlights recent updates on the pharmacology and patents on leukotriene antagonists in the management of inflammation respiratory diseases.
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Affiliation(s)
- Deepak Meshram
- Pharmacogenomics Lab., Department of Biosciences, Barkatullah University, Bhopal (MP) 462026, India
| | - Khushbo Bhardwaj
- Pharmacogenomics Lab., Department of Biosciences, Barkatullah University, Bhopal (MP) 462026, India
| | - Charulata Rathod
- Department of Zoology, Government P.G. College, BHEL, Bhopal (MP) 462022, India
| | - Gail B Mahady
- Clinical Pharmacognosy Lab., Department of Pharmacy Practice, PAHO, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Kapil K Soni
- Pharmacogenomics Lab., Department of Biosciences, Barkatullah University, Bhopal (MP) 462026, India
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Liu T, Barrett NA, Nagai J, Lai J, Feng C, Boyce JA. Leukotriene D 4 paradoxically limits LTC 4-driven platelet activation and lung immunopathology. J Allergy Clin Immunol 2021; 148:195-208.e5. [PMID: 33285161 DOI: 10.1016/j.jaci.2020.10.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 10/07/2020] [Accepted: 10/14/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The 3 cysteinyl leukotrienes (cysLTs), leukotriene (LT) C4 (LTC4), LTD4, and LTE4, have different biologic half-lives, cellular targets, and receptor specificities. CysLT2R binds LTC4 and LTD4in vitro with similar affinities, but it displays a marked selectivity for LTC4in vivo. LTC4, but not LTD4, strongly potentiates allergen-induced pulmonary eosinophilia in mice through a CysLT2R-mediated, platelet- and IL-33-dependent pathway. OBJECTIVE We sought to determine whether LTD4 functionally antagonizes LTC4 signaling at CysLT2R. METHODS We used 2 different in vivo models of CysLT2R-dependent immunopathology, as well as ex vivo activation of mouse and human platelets. RESULTS LTC4-induced CD62P expression; HMGB1 release; and secretions of thromboxane A2, CXCL7, and IL-33 by mouse platelets were all were blocked by a selective CysLT2R antagonist and inhibited by LTD4. These effects did not depend on CysLT1R. Inhaled LTD4 blocked LTC4-mediated potentiation of ovalbumin-induced eosinophilic inflammation; recruitment of platelet-adherent eosinophils; and increases in IL-33, IL-4, IL-5, and IL-13 levels in lung tissue. In contrast, the effect of administration of LTE4, the preferred ligand for CysLT3R, was additive with LTC4. The administration of LTD4 to Ptges-/- mice, which display enhanced LTC4 synthesis similar to that in aspirin-exacerbated respiratory disease, completely blocked the physiologic response to subsequent lysine-aspirin inhalation challenges, as well as increases in levels of IL-33, type 2 cytokines, and biochemical markers of mast cell and platelet activation. CONCLUSION The conversion of LTC4 to LTD4 may limit the duration and extent of potentially deleterious signaling through CysLT2R, and it may contribute to the therapeutic properties of desensitization to aspirin in aspirin-exacerbated respiratory disease.
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Nore KG, Jørgensen MJ, Dyrhol-Riise AM, Jenum S, Tonby K. Elevated Levels of Anti-Inflammatory Eicosanoids and Monocyte Heterogeneity in Mycobacterium tuberculosis Infection and Disease. Front Immunol 2020; 11:579849. [PMID: 33304347 PMCID: PMC7693556 DOI: 10.3389/fimmu.2020.579849] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/19/2020] [Indexed: 12/21/2022] Open
Abstract
Eicosanoids modulate both innate and adaptive immune responses in Mycobacterium tuberculosis (Mtb) infection and have been suggested as possible Host Directed Therapy (HDT) targets, but more knowledge of eicosanoid dynamics in Mtb infection is required. We investigated the levels and ratios of eicosanoid mediators and their cellular sources, monocyte subsets and CD4 T cells in Tuberculosis (TB) patients with various clinical states of Mtb infection. Patients consenting to prospective enrolment in a TB quality registry and biorepository, 16 with pulmonary TB (before and at-end-of treatment), 14 with extrapulmonary TB and 17 latently infected (LTBI) were included. Plasma levels of Prostaglandin E2 (PGE2), Lipoxin A4 (LXA4), and Leukotriene B4 (LTB4) were measured by enzyme-linked immunosorbent assay. Monocyte subsets and CD4 T cells and their expression of Cyclooxygenase-2 (COX-2), Prostaglandin receptor EP2 (EP2), and 5-Lipoxygenase (5-LOX) were analyzed by flow cytometry with and without Purified Protein Derivate (PPD)-stimulation. Pulmonary TB patients had elevated levels of the anti-inflammatory mediator LXA4 at diagnosis compared to LTBI (p < 0.01), while levels of PGE2 and LTB4 showed no difference between clinical states of Mtb infection. LTB4 was the only mediator to be reduced upon treatment (p < 0.05), along with the ratio LTB4/LXA4 (p < 0.01). Pulmonary TB patients had higher levels of total monocytes at diagnosis compared to end-of-treatment and LTBI (both p < 0.05), and a relative increase in the classical monocyte subset. All monocyte subsets had low basal expression of COX-2 and 5-LOX, which were markedly increased upon PPD stimulation. By contrast, the expression of EP2 was reduced upon stimulation. CD4 T cells expressed low basal COX-2 activity that increased modestly upon stimulation, whereas their basal expression of 5-LOX was considerable. In conclusion, the level of eicosanoids in plasma seem to vary between clinical states of Mtb infection. Mediators in the eicosanoid system are present in monocytes and CD4 T cells. The expression of eicosanoids in monocytes are responsive to mycobacterial stimulation independent of Mtb disease state, but subsets are heterogeneous with regard to eicosanoid-mediator expression. Further exploration of eicosanoid mediators as targets for HDT in TB are warranted.
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Affiliation(s)
- Kristin Grotle Nore
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Marthe Jøntvedt Jørgensen
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Anne Ma Dyrhol-Riise
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Synne Jenum
- Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
| | - Kristian Tonby
- Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Infectious Diseases, Oslo University Hospital, Oslo, Norway
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Martin-Martin I, Smith LB, Chagas AC, Sá-Nunes A, Shrivastava G, Valenzuela-Leon PC, Calvo E. Aedes albopictus D7 Salivary Protein Prevents Host Hemostasis and Inflammation. Biomolecules 2020; 10:E1372. [PMID: 32992542 DOI: 10.3390/biom10101372] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 11/29/2022] Open
Abstract
Mosquitoes inject saliva into the host skin to facilitate blood meal acquisition through active compounds that prevent hemostasis. D7 proteins are among the most abundant components of the mosquito saliva and act as scavengers of biogenic amines and eicosanoids. Several members of the D7 family have been characterized at the biochemical level; however, none have been studied thus far in Aedes albopictus, a permissive vector for several arboviruses that causes extensive human morbidity and mortality. Here, we report the binding capabilities of a D7 long form protein from Ae. albopictus (AlboD7L1) by isothermal titration calorimetry and compared its model structure with previously solved D7 structures. The physiological function of AlboD7L1 was demonstrated by ex vivo platelet aggregation and in vivo leukocyte recruitment experiments. AlboD7L1 binds host hemostasis agonists, including biogenic amines, leukotrienes, and the thromboxane A2 analog U-46619. AlboD7L1 protein model predicts binding of biolipids through its N-terminal domain, while the C-terminal domain binds biogenic amines. We demonstrated the biological function of AlboD7L1 as an inhibitor of both platelet aggregation and cell recruitment of neutrophils and eosinophils. Altogether, this study reinforces the physiological relevance of the D7 salivary proteins as anti-hemostatic and anti-inflammatory molecules that help blood feeding in mosquitoes.
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Hoxha M, Spahiu E, Prendi E, Zappacosta B. A Systematic Review on the Role of Arachidonic Acid Pathway in Multiple Sclerosis. CNS Neurol Disord Drug Targets 2020; 21:160-187. [PMID: 32842948 DOI: 10.2174/1871527319666200825164123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/28/2020] [Accepted: 07/17/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND & OBJECTIVE Multiple sclerosis (MS) is an inflammatory neurodegenerative disease characterized by destruction of oligodendrocytes, immune cell infiltration and demyelination. Inflammation plays a significant role in MS, and the inflammatory mediators such as eicosanoids, leukotrienes, superoxide radicals are involved in pro-inflammatory responses in MS. In this systematic review we tried to define and discuss all the findings of in vivo animal studies and human clinical trials on the potential association between arachidonic acid (AA) pathway and multiple sclerosis. METHODS A systematic literature search across Pubmed, Scopus, Embase and Cochrane database was conducted. This systematic review was performed according to PRISMA guidelines. RESULTS A total of 146 studies were included, of which 34 were conducted in animals, 58 in humans, and 60 studies reported the role of different compounds that target AA mediators or their corresponding enzymes/ receptors, and can have a therapeutic effect in MS. These results suggest that eicosanoids have significant roles in experimental autoimmune encephalomyelitis (EAE) and MS. The data from animal and human studies elucidated that PGI2, PGF2α, PGD2, isoprostanes, PGE2, PLA2, LTs are increased in MS. PLA2 inhibition modulates the progression of the disease. PGE1 analogues can be a useful option in the treatment of MS. CONCLUSIONS All studies reported the beneficial effects of COX and LOX inhibitors in MS. The hybrid compounds, such as COX-2 inhibitors/TP antagonists and 5-LOX inhibitors can be an innovative approach for multiple sclerosis treatment. Future work in MS should shed light in synthesizing new compounds targeting arachidonic acid pathway.
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Affiliation(s)
- Malvina Hoxha
- Department of Chemical-Toxicological and Pharmacological Evaluations of Drugs, Faculty of Pharmacy, Catholic University Our Lady of Good Counsel, Rruga Dritan Hoxha, Tirana. Albania
| | | | - Emanuela Prendi
- Catholic University Our Lady of Good Counsel, Department of Biomedical Sciences, Rruga Dritan Hoxha, Tirana. Albania
| | - Bruno Zappacosta
- Department of Chemical-Toxicological and Pharmacological Evaluations of Drugs, Faculty of Pharmacy, Catholic University Our Lady of Good Counsel, Rruga Dritan Hoxha, Tirana. Albania
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40
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Abstract
Leukotrienes are biologically active eicosanoid lipid mediators that originate from oxidative metabolism of arachidonic acid. Biosynthesis of leukotrienes involves a set of soluble and membrane-bound enzymes that constitute a machinery complex primarily expressed by cells of myeloid origin. Leukotrienes and their synthetic enzymes are critical immune modulators for leukocyte migration. Increased concentrations of leukotrienes are implicated in a number of inflammatory disorders. More recent work indicates that leukotrienes may also interact with a variety of tissue cells, contributing to the low-grade inflammation of cardiovascular, neurodegenerative, and metabolic conditions, as well as that of cancer. Leukotriene signaling contributes to the active tumor microenvironment, promoting tumor growth and resistance to immunotherapy. This review summarizes recent insights into the intricate roles of leukotrienes in promoting tumor growth and metastasis through shaping the tumor microenvironment. The emerging possibilities for pharmacological targeting of leukotriene signaling in tumor metastasis are considered.
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Affiliation(s)
- Wen Tian
- Department of Medicine, VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Xinguo Jiang
- Department of Medicine, VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Dongeon Kim
- Department of Medicine, VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Torrey Guan
- Department of Medicine, VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Mark R Nicolls
- Department of Medicine, VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Stanley G Rockson
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States
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41
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Funk CD, Ardakani A. A Novel Strategy to Mitigate the Hyperinflammatory Response to COVID-19 by Targeting Leukotrienes. Front Pharmacol 2020; 11:1214. [PMID: 32848802 PMCID: PMC7424064 DOI: 10.3389/fphar.2020.01214] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/24/2020] [Indexed: 02/06/2023] Open
Abstract
SARS-CoV-2 causing coronavirus disease 2019 (COVID-19) has wreaked havoc during the global pandemic of 2020 infecting millions and leaving over a half million dead. As a new virus, not previously in the human population, but with similarities to other coronaviruses causing severe acute respiratory distress syndrome (SARS/ARDS), and no known treatments, the race to re-purpose existing drugs and to enlist novel therapeutics is underway. In the half-year since the first cases, we have acquired substantial knowledge of this virus and the clinical course of COVID-19 progression. Results from early clinical trials have revealed two treatments (remdesivir, dexamethasone) that mitigate disease progression but clearly, there is much room for improvement. Initial case reports indicated many succumb to COVID-19 of hypoxic respiratory failure due to ARDS. However, ensuing studies revealed an atypical, immune cell-sequestered, vasculature-inflamed state leading to multiorgan thrombotic complications and end organ failure likely due to hyperinflammatory host responses. This Perspective focuses on a potential mechanism for a key COVID-19 disease progression turning point related to vascular and airway inflammation. The leukotriene lipid mediators have been overlooked with discussion centering on cytokine storms unleashing the deadly form of COVID-19. Leukotrienes possess some of the most potent known activities on immune cell trafficking and vascular leakage. We offer a simple treatment paradigm using two generic drugs targeting the hyperinflammatory response that characterizes the turning point from mild to severe/critical COVID-19 by targeting leukotriene biosynthesis with zileuton (Zyflo® controlled release formulation) and antagonism of the cysteinyl leukotriene 1 receptor with montelukast (Singulair®).
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Affiliation(s)
- Colin D Funk
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada.,Scientific Research Division, Novateur Ventures Inc., Vancouver, BC, Canada
| | - Ali Ardakani
- Scientific Research Division, Novateur Ventures Inc., Vancouver, BC, Canada
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42
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Woo SD, Luu QQ, Park HS. NSAID-Exacerbated Respiratory Disease (NERD): From Pathogenesis to Improved Care. Front Pharmacol 2020; 11:1147. [PMID: 32848759 PMCID: PMC7399220 DOI: 10.3389/fphar.2020.01147] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 07/14/2020] [Indexed: 12/12/2022] Open
Abstract
Nonsteroidal antiinflammatory drug (NSAID)-exacerbated respiratory disease (NERD) is characterized by moderate-to-severe asthma and a higher prevalence of chronic rhinosinusitis/nasal polyps, but is a highly heterogeneous disorder with various clinical manifestations. Two major pathogenic mechanisms are: (1) overproduction of cysteinyl leukotrienes with dysregulation of arachidonic acid metabolism and (2) increased type 2 eosinophilic inflammation affected by genetic mechanisms. Aspirin challenge is the gold standard to diagnose NERD, whereas reliable in vitro biomarkers have yet not been identified. Therapeutic approaches have been done on the basis of disease severity with the avoidance of culprit and cross-reacting NSAIDs, and when indicated, aspirin desensitization is an effective treatment option. Biologic approaches targeting Type 2 cytokines are emerging as potential therapeutic options. Here, we summarize the up-to-date evidence of pathophysiologic mechanisms and diagnosis/management approaches to the patients with NERD with its phenotypic classification.
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Affiliation(s)
- Seong-Dae Woo
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
| | - Quoc Quang Luu
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea.,Department of Biomedical Sciences, Ajou University School of Medicine, Suwon, South Korea
| | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea.,Department of Biomedical Sciences, Ajou University School of Medicine, Suwon, South Korea
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43
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Abstract
Arachidonic acid (ARA), an n-6 essential fatty acid, plays an important role in human and animal growth and development. The ARA presents in the membrane phospholipids can be released by phospholipase A2. These free arachidonic acid molecules are then used to produce eicosanoids through three different pathways. Previous studies have demonstrated that eicosanoids have a wide range of physiological functions. Although they are generally considered to be pro-inflammatory molecules, recent advances have elucidated they have an effect on innate immunity via regulating the development, and differentiation of innate immune cells and the function of the intestinal epithelial barrier. Here, we review eicosanoids generation in intestine and their role in intestinal innate immunity, focusing on intestinal epithelial barrier, innate immune cell in lamina propria (LP) and their crosstalk.
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Affiliation(s)
- Ningning Huang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Miaomiao Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Jian Peng
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, PR China
| | - Hongkui Wei
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, PR China
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44
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Boyce JA. Aspirin sensitivity: Lessons in the regulation (and dysregulation) of mast cell function. J Allergy Clin Immunol 2019; 144:875-81. [PMID: 31587797 DOI: 10.1016/j.jaci.2019.08.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 08/21/2019] [Accepted: 08/23/2019] [Indexed: 10/25/2022]
Abstract
The idiosyncratic activation of mast cells (MCs) in response to administration of nonselective COX inhibitors is a cardinal feature of aspirin-exacerbated respiratory disease (AERD). Older studies using MC-stabilizing drugs support a critical role for MCs and their products in driving the severe eosinophilic inflammation and respiratory dysfunction that is typical of AERD. Because patients with AERD react to all nonselective COX inhibitors regardless of their chemical structure, the mechanism of MC activation is not caused by classical, antigen-induced cross-linking of IgE receptors. Recent studies in both human subjects and animal models have revealed a complex and multifactorial process culminating in dysregulation of MC function and an aberrant dependency on COX-1-derived prostaglandin E2 to maintain a tenuous homeostasis. This article reviews the factors most likely to contribute to MC dysregulation in patients with AERD and the potential diagnostic and therapeutic implications.
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45
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Liparulo A, Esposito R, Santonocito D, Muñoz-Ramírez A, Spaziano G, Bruno F, Xiao J, Puglia C, Filosa R, Berrino L, D'Agostino B. Formulation and Characterization of Solid Lipid Nanoparticles Loading RF22-c, a Potent and Selective 5-LO Inhibitor, in a Monocrotaline-Induced Model of Pulmonary Hypertension. Front Pharmacol 2020; 11:83. [PMID: 32180715 PMCID: PMC7059131 DOI: 10.3389/fphar.2020.00083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/27/2020] [Indexed: 02/05/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a rare but fatal disease characterized by persistent elevated blood pressure in the pulmonary circulation, due to increased resistance to blood flow, through the lungs. Advances in the understanding of the pathobiology of PAH clarify the role of leukotrienes (LTs) that appear to be an exciting new target for disease intervention. Over the years, our group has long investigated this field, detecting the 1,2-benzoquinone RF-22c as the most powerful and selective competitive inhibitor of the enzyme 5-lipoxygenase (5-LO). With the aim to improve the bioavailability of RF-22c and to confirm the role of 5-LO as therapeutic strategy for PAH treatment, we developed a solid lipid nanoparticle (SLN) loaded with drug. Therefore, in monocrotaline (MCT) rat model of PAH, the role of 5-LO has been investigated through the formulation of RF-22c-SLN. The rats were randomly grouped into control group, MCT group, and MCT + RF22-c group. After 21 days, all the animals were sacrificed to perform functional and histological evaluations. RF22-c-SLN treatment was able to significantly reduce the mean pulmonary arterial pressure (mPAP) and precapillary resistance (R-pre) compared to the MCT group. The MCT induced rise in medial wall thickness of pulmonary arterioles, and the cardiomyocytes width were significantly attenuated by RF22-c-SLN formulation upon treatment. The results showed that the selective inhibition of 5-LO improved hemodynamic parameters as well as vascular and cardiac remodeling by preventing induced pulmonary hypertension. The improved sustained release properties and targeting abilities achieved with the innovative nanotechnological approach may be therapeutically beneficial for PAH patients as a consequence of the increase of pharmacological effects and of the possible reduction and/or optimization of the drug frequency of administration.
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Affiliation(s)
- Angela Liparulo
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli," University of Campania "L. Vanvitelli," Naples, Italy
| | - Renata Esposito
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli," University of Campania "L. Vanvitelli," Naples, Italy
| | | | - Alejandra Muñoz-Ramírez
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago, Casilla, Correo, Chile.,Institute of Food Safety and Nutrition, Jinan University, Guangzhou, China.,Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli," Naples, Italy
| | - Giuseppe Spaziano
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli," University of Campania "L. Vanvitelli," Naples, Italy
| | - Ferdinando Bruno
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli," Naples, Italy
| | - Jianbo Xiao
- Institute of Food Safety and Nutrition, Jinan University, Guangzhou, China
| | - Carmelo Puglia
- Department of Drug Sciences, University of Catania, Catania, Italy
| | - Rosanna Filosa
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies, University of Campania "L. Vanvitelli," Naples, Italy.,Consorzio Sannio Tech-AMP Biotec, Apollosa, Italy
| | - Liberato Berrino
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli," University of Campania "L. Vanvitelli," Naples, Italy
| | - Bruno D'Agostino
- Department of Experimental Medicine, Section of Pharmacology "L. Donatelli," University of Campania "L. Vanvitelli," Naples, Italy
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46
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Golenkina EA, Viryasova GM, Dolinnaya NG, Bannikova VA, Gaponova TV, Romanova YM, Sud’ina GF. The Potential of Telomeric G-quadruplexes Containing Modified Oligoguanosine Overhangs in Activation of Bacterial Phagocytosis and Leukotriene Synthesis in Human Neutrophils. Biomolecules 2020; 10:E249. [PMID: 32041263 PMCID: PMC7072695 DOI: 10.3390/biom10020249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/28/2020] [Accepted: 02/04/2020] [Indexed: 12/14/2022] Open
Abstract
Human neutrophils are the first line of defense against bacterial and viral infections. They eliminate pathogens through phagocytosis, which activate the 5-lipoxygenase (5-LOX) pathway resulting in synthesis of leukotrienes. Using HPLC analysis, flow cytometry, and other biochemical methods, we studied the effect of synthetic oligodeoxyribonucleotides (ODNs) able to fold into G-quadruplex structures on the main functions of neutrophils. Designed ODNs contained four human telomere TTAGGG repeats (G4) including those with phosphorothioate oligoguanosines attached to the end(s) of G-quadruplex core. Just modified analogues of G4 was shown to more actively than parent ODN penetrate into cells, improve phagocytosis of Salmonella typhimurium bacteria, affect 5-LOX activation, the cytosol calcium ion level, and the oxidative status of neutrophils. As evident from CD and UV spectroscopy data, the presence of oligoguanosines flanking G4 sequence leads to dramatic changes in G-quadruplex topology. While G4 folds into a single antiparallel structure, two main folded forms have been identified in solutions of modified ODNs: antiparallel and dominant, more stable parallel. Thus, both the secondary structure of ODNs and their ability to penetrate into the cytoplasm of cells are important for the activation of neutrophil cellular effects. Our results offer new clues for understanding the role of G-quadruplex ligands in regulation of integral cellular processes and for creating the antimicrobial agents of a new generation.
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Affiliation(s)
- Ekaterina A. Golenkina
- Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow 119234, Russia; (E.A.G.); (G.M.V.)
| | - Galina M. Viryasova
- Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow 119234, Russia; (E.A.G.); (G.M.V.)
| | - Nina G. Dolinnaya
- Lomonosov Moscow State University, Department of Chemistry, Moscow 119234, Russia; (N.G.D.); (V.A.B.)
| | - Valeria A. Bannikova
- Lomonosov Moscow State University, Department of Chemistry, Moscow 119234, Russia; (N.G.D.); (V.A.B.)
| | - Tatjana V. Gaponova
- National Research Center for Hematology, Russia Federation Ministry of Public Health, Moscow 125167, Russia;
| | - Yulia M. Romanova
- Gamaleya National Research Centre of Epidemiology and Microbiology, Moscow 123098, Russia;
| | - Galina F. Sud’ina
- Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Moscow 119234, Russia; (E.A.G.); (G.M.V.)
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47
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Voelkel NF, Peters-Golden M. A new treatment for severe pulmonary arterial hypertension based on an old idea: inhibition of 5-lipoxygenase. Pulm Circ 2020; 10:2045894019882635. [PMID: 32257113 PMCID: PMC7103594 DOI: 10.1177/2045894019882635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 09/24/2019] [Indexed: 12/17/2022] Open
Abstract
It has been generally accepted that severe forms of pulmonary arterial hypertension are associated with inflammation. Plasma levels in patients with severe pulmonary arterial hypertension show elevated levels of interleukins and mediators of inflammation and histologically the diseased small pulmonary arterioles show infiltrates of inflammatory and immune cells. Here, we review the literature that connects pulmonary hypertension with the arachidonic acid/5-lipoxygenase-derived leukotriens. This mostly preclinical background data together with the availability of 5-lipoxygenase inhibitors and leukotriene receptor blockers provide the rationale for testing the hypothesis that 5-lipoxygenase products contribute to the pathobiology of severe pulmonary arterial hypertension in a subgroup of patients.
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Affiliation(s)
- Norbert F. Voelkel
- Department of Pulmonary Medicine,
University of Amsterdam Medical Centers, Amsterdam, the Netherlands
| | - Marc Peters-Golden
- Pulmonary and Critical Care Medicine
Division,
University
of Michigan Medical School, Ann Arbor, MI,
USA
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48
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Marbach-Breitrück E, Kutzner L, Rothe M, Gurke R, Schreiber Y, Reddanna P, Schebb NH, Stehling S, Wieler LH, Heydeck D, Kuhn H. Functional Characterization of Knock-In Mice Expressing a 12/15-Lipoxygenating Alox5 Mutant Instead of the 5-Lipoxygenating Wild-Type Enzyme. Antioxid Redox Signal 2020; 32:1-17. [PMID: 31642348 DOI: 10.1089/ars.2019.7751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aims: Most mammalian genomes involve several genes encoding for functionally distinct arachidonate lipoxygenase (ALOX isoforms). Proinflammatory leukotrienes are formed via the ALOX5 pathway, but 12/15-lipoxygenating ALOX isoforms have been implicated in the biosynthesis of pro-resolving mediators. In vitro mutagenesis of the triad determinants abolished the leukotriene synthesizing activity of ALOX5, but the biological consequences of these alterations have not been studied. To fill this gap, we created Alox5 knock-in mice, which express the 12/15-lipoxygenating Phe359Trp + Ala424Ile + Asn425Met Alox5 triple mutant and characterized its phenotypic alterations. Results: The mouse Alox5 triple mutant functions as arachidonic acid 15-lipoxygenating enzyme, which also forms 12S-hydroxy and 8S-hydroxy arachidonic acid. In contrast to the wild-type enzyme, the triple mutant effectively oxygenates linoleic acid to 13S-hydroxy linoleic acid (13S-HODE), which functions as activating ligand of the type-2 nuclear receptor peroxisome proliferator-activated receptor gamma (PPARγ). Knock-in mice expressing the mutant enzyme are viable, fertile, and develop normally. The mice cannot synthesize proinflammatory leukotrienes but show significantly attenuated plasma levels of lipolytic endocannabinoids. When aging, the animals gained significantly more body weight, which may be related to the fivefold higher levels of 13-HODE in the adipose tissue. Innovation: These data indicate for the first time that in vivo mutagenesis of the triad determinants of mouse Alox5 abolished the biosynthetic capacity of the enzyme for proinflammatory leukotrienes and altered the catalytic properties of the protein favoring the formation of 13-HODE. Conclusion:In vivo triple mutation of the mouse Alox5 gene impacts the body weight homeostasis of aging mice via augmented formation of the activating PPARγ ligand 13-HODE.
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Affiliation(s)
- Eugenia Marbach-Breitrück
- Institute of Biochemistry, Charité-University Medicine Berlin, Corporate Member of Free University Berlin, Humboldt-University zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Laura Kutzner
- Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | | | - Robert Gurke
- Pharmazentrum Frankfurt (ZAFES), Institute of Clinical Pharmacology, Goethe University, Frankfurt am Main, Germany.,Branch for Translational Medicine and Pharmacology (TMP), Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt am Main, Germany
| | - Yannick Schreiber
- Branch for Translational Medicine and Pharmacology (TMP), Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Frankfurt am Main, Germany
| | - Pallu Reddanna
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad India
| | - Nils-Helge Schebb
- Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Sabine Stehling
- Institute of Biochemistry, Charité-University Medicine Berlin, Corporate Member of Free University Berlin, Humboldt-University zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Lothar H Wieler
- Robert Koch Institute, Berlin, Germany.,Institute of Microbiology and Epizootics, Center of Infection Medicine, Free University of Berlin, Berlin, Germany
| | - Dagmar Heydeck
- Institute of Biochemistry, Charité-University Medicine Berlin, Corporate Member of Free University Berlin, Humboldt-University zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Hartmut Kuhn
- Institute of Biochemistry, Charité-University Medicine Berlin, Corporate Member of Free University Berlin, Humboldt-University zu Berlin, Berlin Institute of Health, Berlin, Germany
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49
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Surmiak M, Gielicz A, Stojkov D, Szatanek R, Wawrzycka-Adamczyk K, Yousefi S, Simon HU, Sanak M. LTB 4 and 5-oxo-ETE from extracellular vesicles stimulate neutrophils in granulomatosis with polyangiitis. J Lipid Res 2020; 61:1-9. [PMID: 31740445 PMCID: PMC6939603 DOI: 10.1194/jlr.m092072] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 11/08/2019] [Indexed: 12/11/2022] Open
Abstract
Activation of neutrophils is an important mechanism in the pathology of granulomatosis with polyangiitis (GPA). In this study, we evaluated whether extracellular vesicles (EVs) circulating in the plasma of GPA patients could contribute to this process. EVs from the plasma of GPA patients in the active stage of the disease (n = 10) and healthy controls (n = 10) were isolated by ultracentrifugation and characterized by flow cytometry (CD63, CD8) and nanoparticle tracking analysis. Targeted oxylipin lipidomics of EVs was performed by HPLC-MS/MS. EV/oxylipin-induced neutrophil extracellular traps (NETs) were analyzed by confocal microscopy, and released double-stranded DNA (dsDNA) was quantified by PicoGreen fluorescent dye. Reactive oxygen species (ROS) production and neutrophils' EV binding/uptake were evaluated by flow cytometry. Brief priming with granulocyte-macrophage colony-stimulating factor was required for EV-mediated ROS production and dsDNA release. It was observed that priming also increased EV binding/uptake by neutrophils only for EVs from GPA patients. EVs from GPA patients had higher concentrations of leukotriene (LT)B4 and 5-oxo-eicosatetraenoic acid (5-oxo-ETE) as compared with EVs from healthy controls. Moreover, neutrophils stimulated with LTB4 or 5-oxo-ETE produced ROS and released dsDNA in a concentration-dependent manner. These results reveal the potential role of EVs containing oxylipin cargo on ROS production and NET formation by activated neutrophils.
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Affiliation(s)
- Marcin Surmiak
- Departments of Internal Medicine Jagiellonian University Medical College, Krakow, Poland
| | - Anna Gielicz
- Departments of Internal Medicine Jagiellonian University Medical College, Krakow, Poland
| | - Darko Stojkov
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Rafał Szatanek
- Clinical Immunology, Jagiellonian University Medical College, Krakow, Poland
| | | | - Shida Yousefi
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Marek Sanak
- Departments of Internal Medicine Jagiellonian University Medical College, Krakow, Poland.
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50
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Pal K, Feng X, Steinke JW, Burdick MD, Shim YM, Sung SS, Teague WG, Borish L. Leukotriene A4 Hydrolase Activation and Leukotriene B4 Production by Eosinophils in Severe Asthma. Am J Respir Cell Mol Biol 2019; 60:413-419. [PMID: 30352167 DOI: 10.1165/rcmb.2018-0175oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Asthma is associated with the overproduction of leukotrienes (LTs), including LTB4. Patients with severe asthma can be highly responsive to 5-lipoxygenase (5-LO) inhibition, which blocks production of both the cysteinyl LTs and LTB4. Production of LTB4 has traditionally been ascribed to neutrophils, mononuclear phagocytes, and epithelial cells, and acts as a chemoattractant for inflammatory cells associated with asthma. The source of LTB4 is unclear, especially in eosinophilic asthma. We speculated that the benefit of 5-LO inhibition could be mediated in part by inhibition of eosinophil-derived LTB4. LTB4 concentrations were assayed in BAL fluid from patients with severe asthma characterized by isolated neutrophilic, eosinophilic, and paucigranulocytic inflammation. Expression of LTA4 hydrolase (LTA4H) by airway eosinophils was determined by immunohistochemistry (IHC). Subsequently, peripheral blood eosinophils were activated and secreted LTB4 was quantified by enzyme immunoassay. Blood eosinophil LTA4H expression was determined by flow cytometry, qPCR, and IHC. LTB4 concentrations were elevated in BAL fluid from patients with severe asthma, including those with isolated eosinophilic inflammation, and these eosinophils displayed LTA4H via IHC. LTA4H expression by blood eosinophils was confirmed by flow cytometry, IHC, and qPCR. Robust LTB4 production by blood eosinophils was observed in response to some, but not all, stimuli. We demonstrated that eosinophils express LTA4H transcripts and protein, and can be stimulated to secrete LTB4. We speculate that in many patients with asthma, eosinophil-derived LTB4 is increased, and this may contribute to the efficacy of 5-LO inhibition.
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Affiliation(s)
- Kavita Pal
- 1 Division of Pulmonary and Critical Care Medicine
| | - Xin Feng
- 2 Department of Otorhinolaryngology, QiLu Hospital of Shandong University, Jinan, Shandong, China
| | | | | | - Yun M Shim
- 1 Division of Pulmonary and Critical Care Medicine
| | | | | | - Larry Borish
- 3 Division of Asthma Allergy and Immunology, and.,6 Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia; and
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