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Leukotriene antagonists

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https://www.readbyqxmd.com/read/28810625/inhaled-corticosteroids-improve-lung-function-airway-hyper-responsiveness-and-airway-inflammation-but-not-symptom-control-in-patients-with-mild-intermittent-asthma-a-meta-analysis
#1
Wei Du, Ling Zhou, Yingmeng Ni, Yuanyuan Yu, Fang Wu, Guochao Shi
It remains controversial whether inhaled corticosteroid (ICS) should be used in patients with intermittent asthma. The present study aimed to assess the effect of ICS compared with placebo or other therapies in patients with intermittent asthma. Medline, Embase and CNKI databases were searched up to June 2016 and a meta-analysis was conducted. The findings demonstrated that in adult patients, when compared with placebo, ICS increased forced expiratory volume in 1 sec FEV1 [standardized mean difference (SMD), 0...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28793336/a-systematic-review-of-adverse-drug-events-associated-with-administration-of-common-asthma-medications-in-children
#2
James S Leung, David W Johnson, Arissa J Sperou, Jennifer Crotts, Erik Saude, Lisa Hartling, Antonia Stang
OBJECTIVE: To systematically review the literature and determine frequencies of adverse drug events (ADE) associated with pediatric asthma medications. METHODS: Following PRISMA guidelines, we systematically searched six bibliographic databases between January 1991 and January 2017. Study eligibility, data extraction and quality assessment were independently completed and verified by two reviewers. We included randomized control trials (RCT), case-control, cohort, or quasi-experimental studies where the primary objective was identifying ADE in children 1 month- 18 years old exposed to commercial asthma medications...
2017: PloS One
https://www.readbyqxmd.com/read/28735623/genes-involved-in-leukotriene-synthesis-pathway-are-dynamically-regulated-during-lung-development-in-rhesus-monkeys
#3
Wanmin Xia, Liang Xie, Bangrong Cao, Shujun Cheng, Huajing Wan, Hanmin Liu
BACKGROUND: Leukotrienes play critical roles in many inflammatory lung diseases and several antagonists of their receptors have been used in the clinical settings. However, the physiological functions of leukotrienes in lung development are still unclear. METHOD: The expression levels of 34 genes involved in leukotriene synthesis and function pathway in the lungs of Rhesus monkey during different developmental time points were determined on a MiSeq platform and analyzed by the reads per kilobase of transcript per million mapped reads (RPKM) method...
July 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28718891/mk-reduces-inhaled-chlorine-triggered-ahr-and-airway-inflammation-in-the-mouse
#4
Yoichiro Hamamoto, Satoshi Ano, Benoit Allard, Michael O'Sullivan, Toby K McGovern, James G Martin
BACKGROUND AND PURPOSE: Cysteinyl leukotrienes (CysLTs) are pro-inflammatory lipid mediators that exacerbate disease state in several asthma phenotypes including asthma induced by allergen, virus and exercise. However, the role of CysLTs in irritant-induced airway disease is not well characterized. The purpose of the current study was to investigate the effect of montelukast (MK), a CysLT1R antagonist, on parameters of irritant-induced asthma (IIA) induced by inhalation of chlorine (Cl2 ) in the mouse...
July 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28696803/thai-pediatricians-current-practice-toward-childhood-asthma
#5
Harutai Kamalaporn, Pongpan Chawalitdamrong, Aroonwan Preutthipan
BACKGROUND: Childhood asthma is a substantial health burden in Thailand. Due to a lack of pediatric respiratory specialists (pediatric pulmonologists and allergists; RS), most Thai children are cared for by general pediatricians (pediatric primary care providers (PCP)). OBJECTIVES: We investigated whether current practices of Thai pediatricians complied with asthma guidelines and compared practices (diagnosis and treatments) provided by PCP and RS. METHODS: A cross-sectional study was conducted using electronic surveys including four case scenarios of different asthma phenotypes distributed to Thai pediatricians...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28696794/the-effects-of-asthma-medications-on-reactive-oxygen-species-production-in-human-monocytes
#6
Ming-Kai Tsai, Yi-Ching Lin, Ming-Yii Huang, Min-Sheng Lee, Chang-Hung Kuo, Po-Lin Kuo, Ching-Hsiung Lin, Chih-Hsing Hung
OBJECTIVE: Asthma is a chronic inflammatory airway disease induced by many environmental factors. The inhalation of allergens and pollutants promote the reactive oxygen species (ROS) production leading to airway inflammation, hyper-responsiveness and remodeling in allergic asthma. The effects of asthma medications on ROS production are unclear. The present study investigated the anti-ROS effects of current asthma medications including inhaled corticosteroid (ICS; budesonide and fluticasone), leukotriene receptor antagonist (LTRA; montelukast), long acting β2 agonists (LABAs; salmeterol and formoterol) and a new extra-LABA (indacaterol)...
July 11, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28687195/%C3%AE-2-microglobulin-elicits-itch-related-responses-in-mice-through-the-direct-activation-of-primary-afferent-neurons-expressing-transient-receptor-potential-vanilloid-1
#7
Tsugunobu Andoh, Takahito Maki, Sikai Li, Daisuke Uta
Uremic pruritus is an unpleasant symptom in patients undergoing hemodialysis, and the underlying mechanisms remain unclear. β2-Microglobulin (β2-MG) is well-known as an MHC class I molecule and its level is increased in the plasma of patients undergoing hemodialysis. In this study, we investigated whether β2-MG was a pruritogen in mice. Intradermal injections of β2-MG into the rostral back induced scratching in a dose-dependent manner. Intradermal injection of β2-MG into the cheek also elicited scratching, but not wiping...
September 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28684647/hypersensitivity-to-antipyretics-pathogenesis-diagnosis-and-management
#8
REVIEW
Q U Lee
Antipyretics are commonly prescribed drugs and hypersensitivity occurs at rates of 0.01% to 0.3%. Hypersensitivity can be due to immune mechanisms that include type I to IV hypersensitivity. Type I hypersensitivity results from specific immunoglobulin E production following sensitisation on first exposure. Subsequent exposures elicit degranulation of mast cells, culminating an immediate reaction. Non-type I hypersensitivity is a delayed reaction that involves various effector cells, resulting in maculopapular rash, fixed drug eruptions, drug reaction with eosinophilia and systemic symptoms, and Stevens-Johnson syndrome/toxic epidermal necrolysis...
July 7, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28672809/montelukast-induces-apoptosis-inducing-factor-mediated-cell-death-of-lung-cancer-cells
#9
Ming-Ju Tsai, Wei-An Chang, Pei-Hsun Tsai, Cheng-Ying Wu, Ya-Wen Ho, Meng-Chi Yen, Yi-Shiuan Lin, Po-Lin Kuo, Ya-Ling Hsu
Developing novel chemo-prevention techniques and advancing treatment are key elements to beating lung cancer, the most common cause of cancer mortality worldwide. Our previous cohort study showed that cysteinyl leukotriene receptor antagonists, mainly montelukast, decreased the lung cancer risk in asthma patients. In the current study, we conducted in vivo and in vitro experiments to demonstrate the inhibiting effect of montelukast on lung cancer and to investigate the underlying mechanisms. Using Lewis lung carcinoma-bearing mice, we showed that feeding montelukast significantly delayed the tumor growth in mice (p < 0...
June 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28671445/acute-and-chronic-urticaria-evaluation-and-treatment
#10
REVIEW
Paul Schaefer
Urticaria commonly presents with intensely pruritic wheals, sometimes with edema of the subcutaneous or interstitial tissue. It has a lifetime prevalence of about 20%. Although often self-limited and benign, it can cause significant discomfort, continue for months to years, and uncommonly represent a serious systemic disease or life-threatening allergic reaction. Urticaria is caused by immunoglobulin E- and non-immunoglobulin E-mediated release of histamine and other inflammatory mediators from mast cells and basophils...
June 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28671166/effects-of-oral-montelukast-on-airway-function-in-acute-asthma-a-randomized-trial
#11
Alisha Chaudhury, Gajanan S Gaude, Jyothi Hattiholi
BACKGROUND: The role of leukotriene receptor antagonist is well known in the management of chronic asthma, but their efficacy in acute exacerbation of asthma is unknown. The present study was done to evaluate the clinical efficacy of oral montelukast as an add on therapy to the usual standard therapy of acute attack of bronchial asthma. MATERIALS AND METHODS: A randomized single-blinded controlled study was conducted in a tertiary care teaching hospital. A total of 162 patients with age >18 years of acute exacerbations due to bronchial asthma were included in the study...
July 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28656910/effectiveness-and-safety-of-levocetirizine-10-mg-versus-a-combination-of-levocetirizine-5-mg-and-montelukast-10-mg-in-chronic-urticaria-resistant-to-levocetirizine-5-mg-a-double-blind-randomized-controlled-trial
#12
Tushar Kanti Sarkar, Amrita Sil, Santasmita Pal, Chinmoy Ghosh, Nilay Kanti Das
BACKGROUND: Chronic urticaria is a vexing problem for patients and treating physicians alike. The EAACI/GA2LEN/EDF/WAO guidelines advocate an increased antihistamine dosage up to four times the standard, before adding leukotriene receptor antagonists. Patients are frequently intolerant of these higher dosages. We conducted this study to determine whether the addition of leukotriene receptor antagonists to the standard antihistamine dose was comparable to higher dosages of antihistamines alone, in terms of efficacy, safety and quality of life changes...
June 27, 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28647381/leukotriene-receptor-antagonist-attenuated-airway-inflammation-and-hyperresponsiveness-in-a-double-stranded-rna-induced-asthma-exacerbation-model
#13
Mariko Ujino, Naoya Sugimoto, Yuta Koizumi, Shoki Ro, Yasuhiro Kojima, Kamiyama-Hara Asae, Naomi Yamashita, Ken Ohta, Hiroyuki Nagase
BACKGROUND: Viral infections are the most common triggers of asthma exacerbation, but the key molecules involved in this process have not been fully identified. Although cysteinyl leukotrienes (cysLTs) have been postulated as the key mediators, their precise roles remain largely unclear. To investigate the roles of cysLTs in virus-induced asthma exacerbation, we developed a murine model using a viral double-stranded RNA analog, polyinosinic-polycytidylic acid (poly I:C), and analyzed the effect of leukotriene receptor antagonist (LTRA) administration...
June 21, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28639856/adverse-events-are-rare-after-single-dose-montelukast-exposures-in-children
#14
Donald H Arnold, Nena Bowman, Theodore F Reiss, Tina V Hartert, Donna L Seger
STUDY OBJECTIVE: Montelukast sodium is a leukotriene-receptor antagonist approved as a controller medication for chronic asthma and allergic rhinitis in children and adults. We sought to characterize adverse events associated with single montelukast exposures in children ages 5-17 years and to determine whether adverse events were dose related for all-dose and for ultra-high-dose (≥50 mg) exposures. METHODS: This is a retrospective analysis of data from the National Poison Data System for exposures that included montelukast in individuals aged 5-17 years for calendar years 2000-2016...
June 22, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28639121/montelukast-use-a-19-year-nationwide-drug-utilisation-study
#15
Daniel Pilsgaard Henriksen, Jesper Rømhild Davidsen, Christian B Laursen, Anders Christiansen, Per Damkier, Jesper Hallas, Anton Pottegård
PURPOSE: Montelukast is a leukotriene receptor antagonist used in asthma and rhinitis treatment. Despite being marketed nearly two decades ago, little is known about its utilisation pattern. METHODS: Using the Danish National Prescription Registry, we identified subjects filling a montelukast prescription between 1998 and 2017. Using descriptive statistics, we reported the development in incidence, and prevalence, as well as a measure of treatment duration, and concomitant use of asthma- or anti-allergic therapy...
June 22, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28637990/effect-of-the-leukotriene-receptor-antagonist-montelukast-on-orthodontic-tooth-movement
#16
Hossam Asaad, Rabab Al-Sabbagh, Darem Al-Tabba, Omar Kujan
Asthma is a chronic inflammatory disease, and its prevalence is relatively high among children. Optimal management of asthma often requires long-term pharmacotherapy; however, the effects of these medications on orthodontic treatment is uncertain. We evaluated the effects of the leukotriene LTD4 receptor antagonist montelukast on orthodontic tooth movement in an animal model. Eight mongrel dogs were given montelukast for periods up to 4 weeks. An orthodontic force of 150-200 g was applied to move the second and fourth premolars toward the site of the extracted third premolar...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28623130/leukotriene-signaling-via-alox5-and-cysteinyl-leukotriene-receptor-1-is-dispensable-for-in%C3%A2-vitro-growth-of-cd34-cd38-stem-and-progenitor-cells-in-chronic-myeloid-leukemia
#17
Monika Dolinska, Alexandre Piccini, Wan Man Wong, Eleni Gelali, Anne-Sofie Johansson, Johannis Klang, Pingnan Xiao, Elham Yektaei-Karin, Ulla Olsson Strömberg, Satu Mustjoki, Leif Stenke, Marja Ekblom, Hong Qian
Tyrosine kinase inhibitors targeting the BCR-ABL oncoprotein in chronic myeloid leukemia (CML) are remarkably effective inducing deep molecular remission in most patients. However, they are less effective to eradicate the leukemic stem cells (LSC), resulting in disease persistence. Therefore, there is great need to develop novel therapeutic strategies to specifically target the LSC. In an experimental mouse CML model system, the leukotriene pathway, and specifically, the expression ALOX5, encoding 5-lipoxygenase (5-LO), has been reported as a critical regulator of the LSC...
August 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28602936/allergic-rhinitis-and-its-impact-on-asthma-aria-guidelines-2016-revision
#18
Jan L Brożek, Jean Bousquet, Ioana Agache, Arnav Agarwal, Claus Bachert, Sinthia Bosnic-Anticevich, Romina Brignardello-Petersen, G Walter Canonica, Thomas Casale, Niels H Chavannes, Jaime Correia de Sousa, Alvaro A Cruz, Carlos A Cuello-Garcia, Pascal Demoly, Mark Dykewicz, Itziar Etxeandia-Ikobaltzeta, Ivan D Florez, Wytske Fokkens, Joao Fonseca, Peter W Hellings, Ludger Klimek, Sergio Kowalski, Piotr Kuna, Kaja-Triin Laisaar, Désirée E Larenas-Linnemann, Karin C Lødrup Carlsen, Peter J Manning, Eli Meltzer, Joaquim Mullol, Antonella Muraro, Robyn O'Hehir, Ken Ohta, Petr Panzner, Nikolaos Papadopoulos, Hae-Sim Park, Gianni Passalacqua, Ruby Pawankar, David Price, John J Riva, Yetiani Roldán, Dermot Ryan, Behnam Sadeghirad, Boleslaw Samolinski, Peter Schmid-Grendelmeier, Aziz Sheikh, Alkis Togias, Antonio Valero, Arunas Valiulis, Erkka Valovirta, Matthew Ventresca, Dana Wallace, Susan Waserman, Magnus Wickman, Wojtek Wiercioch, Juan José Yepes-Nuñez, Luo Zhang, Yuan Zhang, Mihaela Zidarn, Torsten Zuberbier, Holger J Schünemann
BACKGROUND: Allergic rhinitis affects 10 to 40% of the population. It reduces quality of life, school and work performance, and is a frequent reason for office visits in general practice. Medical costs are large but avoidable costs associated with lost work productivity are even larger than those incurred by asthma. New evidence has accumulated since the last revision of the Allergic Rhinitis and its Impact on Asthma - ARIA guidelines in 2010 prompting its update. OBJECTIVE: To provide a targeted update of the ARIA guidelines...
June 8, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28600709/cysteinyl-leukotriene-receptor-antagonists-inhibit-migration-invasion-and-expression-of-mmp-2-9-in-human-glioblastoma
#19
Pannaree Piromkraipak, Kant Sangpairoj, Wuttipong Tirakotai, Kulathida Chaithirayanon, Supeenun Unchern, Porntip Supavilai, Christopher Power, Pornpun Vivithanaporn
Glioblastoma is one of the most malignant and aggressive types of brain tumors. 5-lipoxygenase and cysteinyl leukotriene receptor 1 (CysLT1) play a role in human carcinogenesis. Leukotriene receptor antagonists (LTRAs), anti-asthmatic drugs with mild side effects, have anti-metastatic activity in epidermoid carcinoma, lung carcinoma, and colon cancers as well as neuroprotective effects. Herein, anti-migratory effects of two LTRAs, montelukast and zafirlukast, were investigated in glioblastoma cells. The level of CysLT1 in A172 cells was increased by 3...
June 9, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28600286/lipopolysaccharide-tlr4-stimulates-il-13-production-through-a-myd88-blt2-linked-cascade-in-mast-cells-potentially-contributing-to-the-allergic-response
#20
A-Jin Lee, MyungJa Ro, Kyung-Jin Cho, Jae-Hong Kim
In an experimental asthma model, the activation of TLR4 by bacterial LPS occasionally exacerbates allergic inflammation through the production of Th2 cytokines, and mast cells have been suggested to play a central role in this response. However, the detailed mechanism underlying how LPS/TLR4 stimulates the production of Th2 cytokines, especially IL-13, remains unclear in mast cells. In the current study, we observed that the expression levels of leukotriene B4 receptor-2 (BLT2) and the synthesis of its ligands were highly upregulated in LPS-stimulated bone marrow-derived mast cells and that BLT2 blockade with small interfering RNA or a pharmacological inhibitor completely abolished IL-13 production, suggesting a mediatory role of the BLT2 ligand-BLT2 axis in LPS/TLR4 signaling to IL-13 synthesis in mast cells...
June 9, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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