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Dexamethasone asthma

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https://www.readbyqxmd.com/read/29777682/inhibition-of-bet-bromodomains-restores-corticosteroid-responsiveness-in-a-mixed-granulocytic-mouse-model-of-asthma
#1
Ahmed Nadeem, Sheikh F Ahmad, Naif O Al-Harbi, Nahid Siddiqui, Khalid E Ibrahim, Sabry M Attia
Asthma is a heterogeneous disease characterized by different endotypes/phenotypes. Th2/Th17 driven mixed granulocytic asthma is one of them and shows resistance to corticosteroid therapy. Bromodomain and extra-terminal (BET) proteins are required for differentiation of Th17 cells which play a pivotal role in neutrophilic inflammation. Therefore, we sought to characterize the differential effects of BET inhibitor versus corticosteroids, and their potential synergism in cockroach allergen extract (CE)-induced mixed granulocytic (eosinophilic and neutrophilic) mouse model of asthma having Th2/Th17 endotype...
May 16, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29772010/hypergravity-enhances-the-therapeutic-effect-of-dexamethasone-in-allergic-asthma-and-rhinitis-animal-model
#2
Tae Young Jang, Ah-Yeoun Jung, Soonjo Kwon, Young Hyo Kim
We investigated whether the therapeutic effects of dexamethasone for allergic asthma and rhinitis were enhanced in mice when exposed to hypergravity. Forty mice were divided into 5 groups (n = 8/group): Control group received saline intraperitoneally (i.p.) and intranasally (i.n.); Asthma group received i.p./i.n. ovalbumin (OVA) for inducing allergic asthma/rhinitis; Dexa group received i.n. dexamethasone (0.75 mg/kg) 30 minutes before each OVA challenge; Hypergravity group was subjected to allergic asthma/rhinitis as well as exposed to 5 G hypergravity for 30 days; Finally in Dexa/Hypergravity group, hypergravity and dexamethasone were used simultaneously during induction of allergic asthma/rhinitis...
2018: PloS One
https://www.readbyqxmd.com/read/29764909/ohio-pediatric-asthma-repository-opportunities-to-revise-care-practices-to-decrease-time-to-physiologic-readiness-for-discharge
#3
Jeffrey M Simmons, Jocelyn M Biagini Myers, Lisa J Martin, Carolyn M Kercsmar, Christine L Schuler, Valentina V Pilipenko, John W Kroner, Hua He, Stephen R Austin, Huyen-Tran Nguyen, Kristie R Ross, Karen S McCoy, Sherman J Alter, Samantha M Gunkelman, Pierre A Vauthy, Gurjit K Khurana Hershey
BACKGROUND: Large-scale, multisite studies in which researchers evaluate patient- and systems-level factors associated with pediatric asthma exacerbation outcomes are lacking. We sought to investigate patient-level risks and system-level practices related to physiologic readiness for discharge (PRD) in the prospective Ohio Pediatric Asthma Repository. METHODS: Participants were children ages 2 to 17 years admitted to an Ohio Pediatric Asthma Repository hospital for asthma exacerbation...
May 15, 2018: Hospital Pediatrics
https://www.readbyqxmd.com/read/29747740/auraptene-regulates-th-1-th-2-t-reg-balances-nf-%C3%AE%C2%BAb-nuclear-localization-and-nitric-oxide-production-in-normal-and-th-2-provoked-situations-in-human-isolated-lymphocytes
#4
Vahid Reza Askari, Vafa Baradaran Rahimi, Seyed Abdolrahim Rezaee, Mohammad Hossein Boskabady
BACKGROUND: Auraptene as member of dietary coumarins, is found in citrus fruits. Former studies have demonstrated its anti-inflammatory and anti-cancer activity. PURPOSE: The mechanism of action and immune-modulatory property of this compound on human lymphocytes are greatly unknown. STUDY DESIGN/METHODS: The effect of three concentrations (10, 30 and 90 µM) of auraptene or dexamethasone (0.1 mM) were evaluated on percentage of cell proliferation and nitric oxide (NO) production as well as secretion and gene expression of cytokines, and NF-κB level in PHA-stimulated and non-stimulated lymphocytes...
April 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29729496/progressive-increase-in-allergen-concentration-abrogates-immune-tolerance-in-ovalbumin-induced-murine-model-of-chronic-asthma
#5
Gurupreet S Sethi, Amarjit S Naura
Persistent inflammation and remodeling of airways are the major hallmarks of asthma. Though airway inflammation diminishes in ovalbumin (OVA)-based mouse model of chronic asthma owing to immune-tolerance linked with repeated allergen exposure, which limits the application of the disease model. Accordingly, the present study was designed to develop a murine model of chronic asthma which presents persistent airway inflammation coupled with remodeling traits. Herein, OVA-sensitized BALB/c mice were challenged with increasing (modified protocol) or constant concentration (conventional protocol) of the allergen for 6 weeks; 3 times/week...
May 2, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29693459/evaluating-the-effectiveness-of-systemic-corticosteroids-to-mitigate-relapse-in-children-assessed-and-treated-for-acute-asthma-a-network-meta-analysis
#6
Scott W Kirkland, Ben Vandermeer, Sandy Campbell, Cristina Villa-Roel, Amanda Newton, Francine M Ducharme, Brian H Rowe
OBJECTIVE: The objective of this systematic review was to explore the effectiveness of various systemic corticosteroid (SCS) regimens to mitigate relapse in children with asthma discharged from an acute care setting. DATA SOURCES: Medline, EMBASE, Global Health, International Pharmaceutical Abstracts, EMB ALL, CINAHL, SCOPUS, Proquest Dissertations and Theses Global, and LILACS were searched using controlled vocabulary and key words. Additional citations were searched via clinical trial registries, Google Scholar, bibliographies, a SCOPUS forward search of a sentinel paper, and hand searching conference abstracts...
April 25, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29624776/trpc3-overexpression-and-intervention-in-airway-smooth-muscle-of-ovalbumin-induced-hyperresponsiveness-and-remodeling
#7
Bo-Ming Xu, Jia-Hua Zhang, Jia-Ling Wang, Jun-Hua Xiao
Transient receptor potential canonical channel 3 (TRPC3) proteins function as non-voltage-gated Ca2+ -permeable channels and play divergent roles in many processes of pathophysiology. The purpose of this study was to determine the relationship between TRPC3 expression and airway hyperresponsiveness and remodeling in ovalbumin-induced asthmatic Kunming mice. Mice were sensitized and challenged by ovalbumin to establish asthmatic model. Hematoxylin-eosin staining, hydroxyproline assay and isometric tracheal ring force measurement were used to evaluate airway remodeling and hyperresponsiveness in asthmatic mice...
April 6, 2018: Cell Biology International
https://www.readbyqxmd.com/read/29609011/relaxant-effect-of-lippia-origanoides-essential-oil-in-guinea-pig-trachea-smooth-muscle-involves-potassium-channels-and-soluble-guanylyl-cyclase
#8
Pedro Modesto Nascimento Menezes, Mariana Coelho Brito, Gabriela Olinda de Paiva, Carine Oliveira Dos Santos, Lenaldo Muniz de Oliveira, Luciano Augusto de Araújo Ribeiro, Julianeli Tolentino de Lima, Angélica Maria Lucchese, Fabrício Souza Silva
ETHNOPHARMACOLOGICAL RELEVANCE: Lippia origanoides H.B.K. is an aromatic species used in folk medicine to treat respiratory diseases, including asthma. AIM OF THE STUDY: The aim of this work was to evaluate the relaxing potential and mechanism of action of the L. origanoides (LOO) essential oil in isolated guinea-pig trachea MATERIALS AND METHODS: Leaves from L. origanoides were collected at experimental fields under organic cultivation, at the Forest Garden of Universidade Estadual de Feira de Santana...
March 30, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29579542/nicorandil-alleviates-ovalbumin-induced-airway-inflammation-in-a-mouse-model-of-asthma
#9
Dalia H El-Kashef
Nicorandil is an antianginal drug that has anti-inflammatory property. This study aimed to investigate the effects of nicorandil on allergic asthma induced by ovalbumin (OVA) in mice in comparison with dexamethasone. Mice were sensitized to OVA (on days 0 and 7) and challenged with OVA three times (on days 14, 15 and 16). Nicorandil was given orally for 5 days 1 h before OVA treatment in days of challenge. Progression of asthma was accompanied by significant elevation in the lung/body weight index, LDH, total protein, IL-13 and NF-κB levels besides inflammatory cell counts in BALF; Also pulmonary MDA and NO contents were significantly increased but GSH and SOD levels were decreased...
March 19, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29561171/dexamethasone-for-pediatric-asthma-exacerbations-a-quality-improvement-intervention
#10
Santiago Mintegi, Natalia Paniagua, Jose-Ignacio Pijoan, Zaloa Gorostizaga, Maria Gonzalez, Javier Benito
No abstract text is available yet for this article.
March 1, 2018: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/29512368/regulatory-effect-of-xiaoqinglong-decoction-on-thymic-stromal-lymphopoietin-tslp-inflammation-promoter-in-mice-with-cold-asthma
#11
Guihua Song, Yan Zhang, Kun Zhao, Mengmeng Sun, Pengju Cheng, Jing Wang
Allergic asthma is a complex and chronic inflammatory airway disease. The thymic stromal lymphopoietin (TSLP) signaling pathway plays an important role in asthma. Xiaoqinglong Decoction (XQL) is the first choice to treat cold asthma in clinical settings. In this study, the role of the TSLP pathway in the onset of asthma and the protective mechanism of XQL were investigated. A total of 50 female mice were randomly divided into the following groups: the blank group (A), the model group (B), the XQL group (C), the dexamethasone group (D), and the XQL + dexamethasone group (E)...
February 2018: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29503615/metabolomics-based-profiling-of-dexamethasone-side-effects-in-rats
#12
Abeer K Malkawi, Karem H Alzoubi, Minnie Jacob, Goran Matic, Asmaa Ali, Achraf Al Faraj, Falah Almuhanna, Majed Dasouki, Anas M Abdel Rahman
Dexamethasone (Dex) is a synthetic glucocorticoid that has anti-inflammatory and immunosuppressant effects and is used in several conditions such as asthma and severe allergy. Patients receiving Dex, either at a high dose or for a long time, might develop several side effects such as hyperglycemia, weight change, or osteoporosis due to its in vivo non-selectivity. Herein, we used liquid chromatography-tandem mass spectrometry-based comprehensive targeted metabolomic profiling as well as radiographic imaging techniques to study the side effects of Dex treatment in rats...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29503272/oral-dexamethasone-versus-oral-prednisolone-in-acute-asthma-a-new-randomized-controlled-trial-and-updated-meta-analysis-pediatric-pulmonologist-s-viewpoint
#13
COMMENT
Mandeep Kaur Walia
No abstract text is available yet for this article.
February 15, 2018: Indian Pediatrics
https://www.readbyqxmd.com/read/29503271/oral-dexamethasone-versus-oral-prednisolone-in-acute-asthma-a-new-randomized-controlled-trial-and-updated-meta-analysis-evidence-based-medicine-viewpoint
#14
COMMENT
https://www.readbyqxmd.com/read/29498549/potential-of-serum-soluble-cd93-as-a-biomarker-for-asthma-in-an-ovalbumin-induced-asthma-murine-model
#15
Hye Jung Park, Eun-Yi Oh, Yoon Hee Park, Misuk Yang, Kyung Hee Park, Jung-Won Park, Jae-Hyun Lee
BACKGROUND: CD93 is a membrane-associated glycoprotein, which can be released in a soluble form (sCD93) into the serum. CD93 has received renewed attention as a candidate biomarker of inflammation in various inflammatory and immune-mediated diseases, including asthma. OBJECTIVE: We aimed to evaluate the effects of airway inflammation on CD93 levels in murine models. METHODS: We established an ovalbumin (OVA)-induced acute asthma murine model (OVA model) and a lipopolysaccharide (LPS)-induced airway inflammation murine model (LPS model)...
April 12, 2018: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/29456654/establishment-of-different-experimental-asthma-models-in-mice
#16
Qian-Lin Yu, Zhangbo Chen
Asthma is a complex disease. The heterogeneity of airway inflammation during asthma indicates there are different mechanisms involved. In order to further study the mechanisms of asthma, different mouse models were established to mimic corresponding subtypes of asthma in clinic. Eosinophilic asthma was established by intraperitoneal injections of ovalbumin (OVA) on day 0 and day 7, followed by inhalation of aerosolized OVA on days 14-17. Neutrophilic asthma was established by transtracheal administration of a high dose of lipopolysaccharide (LPS; 10 µg) on days 15 and 17 in combination with OVA sensitization and challenge as described previously...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29435713/incidence-of-infusion-hypersensitivity-reaction-after-withholding-dexamethasone-premedication-in-early-breast-cancer-patients-not-experiencing-two-previous-cycles-of-infusion-hypersensitivity-reaction-for-weekly-paclitaxel-chemotherapy
#17
Napa Parinyanitikul, Walailuk Tanpipattanakul, Nattaya Poovorawan, Thanapoom Rattananupong, Poranee Laoitthi, Piyada Sithidetphaiboon, Suebpong Thanasanvimon, Virote Sriuranpong
BACKGROUND: Premedication with dexamethasone is an essential part of the prevention of hypersensitivity reaction (HSR) associated with taxane administration. However, the possibility of stopping dexamethasone premedication has been investigated in previous studies to reduce the steroid's adverse events; however, either the result or the particular protocol was limited. Thus, our study aimed to evaluate the incidence of HSR after dexamethasone premedication discontinuation after lack of HSR in two previous weekly paclitaxel infusions...
February 12, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29432856/aqueous-extracts-from-uncaria-tomentosa-willd-ex-schult-dc-reduce-bronchial-hyperresponsiveness-and-inflammation-in-a-murine-model-of-asthma
#18
Bruna Cestari Azevedo, Lucas Junqueira Freitas Morel, Fábio Carmona, Thiago Mattar Cunha, Silvia Helena Taleb Contini, Piero Giuseppe Delprete, Fernando Silva Ramalho, Eduardo Crevelin, Bianca Waléria Bertoni, Suzelei Castro França, Marcos Carvalho Borges, Ana Maria Soares Pereira
ETHNOPHARMACOLOGICAL RELEVANCE: Uncaria tomentosa (Willd. Ex Schult) DC is used by indigenous tribes in the Amazonian region of Central and South America to treat inflammation, allergies and asthma. The therapeutic properties of U. tomentosa have been attributed to the presence of tetracyclic and pentacyclic oxindole alkaloids and to phenolic acids. AIMS OF THE STUDY: To characterize aqueous bark extracts (ABE) and aqueous leaf extracts (ALE) of U. tomentosa and to compare their anti-inflammatory effects...
May 23, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29428392/mer-mediated-eosinophil-efferocytosis-regulates-resolution-of-allergic-airway-inflammation
#19
Jennifer M Felton, Christopher D Lucas, David A Dorward, Rodger Duffin, Tiina Kipari, Sonja Vermeren, Calum T Robb, Kenneth G MacLeod, Bryan Serrels, Jürgen Schwarze, Christopher Haslett, Ian Dransfield, Adriano G Rossi
BACKGROUND: Eosinophils play a central role in propagation of allergic diseases, including asthma. Both recruitment and retention of eosinophils regulate pulmonary eosinophilia, but the question of whether alterations in apoptotic cell clearance by phagocytes contributes directly to resolution of allergic airway inflammation remains unexplored. OBJECTIVES: In this study we investigated the role of the receptor tyrosine kinase Mer in mediating apoptotic eosinophil clearance and allergic airway inflammation resolution in vivo to establish whether apoptotic cell clearance directly affects the resolution of allergic airway inflammation...
February 8, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29410046/systems-biology-and-in-vitro-validation-identifies-family-with-sequence-similarity-129-member-a-fam129a-as-an-asthma-steroid-response-modulator
#20
Michael J McGeachie, George L Clemmer, Boris Hayete, Heming Xing, Karl Runge, Ann Chen Wu, Xiaofeng Jiang, Quan Lu, Bruce Church, Iya Khalil, Kelan Tantisira, Scott Weiss
BACKGROUND: Variation in response to the most commonly used class of asthma controller medication, inhaled corticosteroids, presents a serious challenge in asthma management, particularly for steroid-resistant patients with little or no response to treatment. OBJECTIVE: We applied a systems biology approach to primary clinical and genomic data to identify and validate genes that modulate steroid response in asthmatic children. METHODS: We selected 104 inhaled corticosteroid-treated asthmatic non-Hispanic white children and determined a steroid responsiveness endophenotype (SRE) using observations of 6 clinical measures over 4 years...
February 27, 2018: Journal of Allergy and Clinical Immunology
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