1
|
Hengeveld VS, Lammers N, van der Kamp MR, van der Palen J, Thio BJ. Can the response to a single dose of beclomethasone dipropionate predict the outcome of long-term treatment in childhood exercise-induced bronchoconstriction? Pediatr Allergy Immunol 2022; 33:e13808. [PMID: 35754119 DOI: 10.1111/pai.13808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/09/2022] [Accepted: 05/13/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Exercise-induced bronchoconstriction (EIB) is a frequent and highly specific symptom of childhood asthma. Inhaled corticosteroids (ICS) are the mainstay of controller therapy for EIB and asthma; however, a proportion of asthmatic children and adolescents is less responsive to ICS. We hypothesized that a single dose response to ICS could function as a predictor for individual long-term efficacy of ICS. OBJECTIVE To assess the predictive value of the bronchoprotective effect of a single-dose beclomethasone dipropionate (BDP) against EIB for the bronchoprotective effect of 4 weeks of treatment, using an exercise challenge test (ECT). METHODS Thirty-two steroid-naïve children and adolescents aged 6 to 18 years with EIB were included in this prospective cohort study. They performed an ECT at baseline, after a single-dose BDP (200µg) and after 4 weeks of BDP treatment (100 µg twice daily) to assess EIB severity. RESULTS The response to a single-dose BDP on exercise-induced fall in FEV1 showed a significant correlation with the response on exercise-induced fall in FEV1 after 4 weeks of BDP treatment (r = .38, p = .004). A reduction in post-exercise fall in FEV1 of more than 8% after a single-dose BDP could predict BDP efficacy against EIB after 4 weeks of treatment with a positive predictive value of 100% (CI: 86.1-100%) and a negative predictive value of 29.4% (CI: 11.7%-53.7%). CONCLUSION We found that the individual response to a single-dose BDP against EIB has a predictive value for the efficacy of long-term treatment with BDP. This could support clinicians in providing personalized management of EIB in childhood asthma.
Collapse
Affiliation(s)
- Vera S Hengeveld
- Department of Paediatrics, Medisch Spectrum Twente, Enschede, The Netherlands
| | - Natasja Lammers
- Department of Paediatrics, Medisch Spectrum Twente, Enschede, The Netherlands
| | - Mattienne R van der Kamp
- Department of Paediatrics, Medisch Spectrum Twente, Enschede, The Netherlands.,Department of Biomedical Signals and Systems, University of Twente, Enschede, The Netherlands
| | - Job van der Palen
- Clinical Epidemiology, Medisch Spectrum Twente, Enschede, The Netherlands.,Department of Research Methodology, Measurement and Data Analysis, University of Twente, Enschede, The Netherlands
| | - Bernard J Thio
- Department of Paediatrics, Medisch Spectrum Twente, Enschede, The Netherlands
| |
Collapse
|
2
|
A carbon dots-based ratiometric fluorescence probe for monitoring intracellular pH and bioimaging. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113129] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
3
|
Zhang S, Ji X, Liu J, Wang Q, Jin L. One-step synthesis of yellow-emissive carbon dots with a large Stokes shift and their application in fluorimetric imaging of intracellular pH. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117677. [PMID: 31675656 DOI: 10.1016/j.saa.2019.117677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 10/11/2019] [Accepted: 10/17/2019] [Indexed: 05/23/2023]
Abstract
A new nanoprobe based on yellow-emissive carbon dots (Y-CDs) was developed for sensing full-range intracellular pH values. By using o-phenylenediamine as the raw material, Y-CDs with a quantum yield of 31% were prepared through a one-pot solvothermal carbonization method. The Y-CDs exhibited a distinctive fluorescence emission peak at 570 nm with excitation at 450 nm, showing a very large Stokes shift (120 nm). Notably, the nanoprobe revealed a linear relationship between fluorescence intensity and pH value within the range of pH 4.0 to 8.2, exhibiting the ability of this probe to monitor full-range intracellular pH variations. In addition, the nanosensor possessed excellent photostability and fluorescence reversibility in pH measurements and showed excellent selective detection of the influences of other biological species. The CD-based nanoprobe was successfully used to perform quantitative fluorescence imaging of intracellular pH variation, demonstrating its promise for application in cellular systems.
Collapse
Affiliation(s)
- Shengrui Zhang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, China
| | - Xiaohui Ji
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, China
| | - Jin Liu
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, China
| | - Qin Wang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, China.
| | - Lingxia Jin
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environment Science, Shaanxi University of Technology, Hanzhong, Shaanxi, 723000, China
| |
Collapse
|
4
|
Johnstone WM, Honeycutt JL, Deck CA, Borski RJ. Nongenomic glucocorticoid effects and their mechanisms of action in vertebrates. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2019; 346:51-96. [PMID: 31122395 DOI: 10.1016/bs.ircmb.2019.03.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Glucocorticoids (GC) act on multiple organ systems to regulate a variety of physiological processes in vertebrates. Due to their immunosuppressive and anti-inflammatory actions, glucocorticoids are an attractive target for pharmaceutical development. Accordingly, they are one of the most widely prescribed classes of therapeutics. Through the classical mechanism of steroid action, glucocorticoids are thought to mainly affect gene transcription, both in a stimulatory and suppressive fashion, regulating de novo protein synthesis that subsequently leads to the physiological response. However, over the past three decades multiple lines of evidence demonstrate that glucocorticoids may work through rapid, nonclassical mechanisms that do not require alterations in gene transcription or translation. This review assimilates evidence across the vertebrate taxa on the diversity of nongenomic actions of glucocorticoids and the membrane-associated cellular mechanisms that may underlie rapid glucocorticoid responses to include potential binding sites characterized to date.
Collapse
Affiliation(s)
- William M Johnstone
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States
| | - Jamie L Honeycutt
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States
| | - Courtney A Deck
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States
| | - Russell J Borski
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States.
| |
Collapse
|
5
|
Kusuda Y, Kondo Y, Miyagi Y, Munemasa T, Hori Y, Aonuma F, Tsuka S, Mukaibo T, Masaki C, Hosokawa R. Long-term dexamethasone treatment diminishes store-operated Ca 2+ entry in salivary acinar cells. Int J Oral Sci 2019; 11:1. [PMID: 30602784 PMCID: PMC6315037 DOI: 10.1038/s41368-018-0031-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 05/10/2018] [Accepted: 05/14/2018] [Indexed: 11/09/2022] Open
Abstract
Corticosteroids are used in the treatment of many diseases; however, they also induce various side effects. Dexamethasone is one of the most potent corticosteroids, and it has been reported to induce the side effect of impaired salivary gland function. This study aimed to evaluate the effects of dexamethasone on mouse submandibular gland function to gain insight into the mechanism of dexamethasone-induced salivary hypofunction. The muscarinic agonist carbachol (CCh) induced salivary secretion and was not affected by short-term dexamethasone treatment but was decreased following long-term dexamethasone administration. The expression levels of the membrane proteins Na+-K+-2Cl- cotransporter, transmembrane member 16A, and aquaporin 5 were comparable between the control and long-term dexamethasone treatment groups. The CCh-induced increase in calcium concentration was significantly lower in the presence of extracellular Ca2+ in the long-term dexamethasone treatment group compared to that in the control group. Furthermore, CCh-induced salivation in the absence of extracellular Ca2+ and Ca2+ ionophore A23187-induced salivation was comparable between the control and long-term dexamethasone treatment groups. Moreover, salivation induced by the Ca2+-ATPase inhibitor thapsigargin was diminished in the long-term dexamethasone treatment group. In summary, these results demonstrate that short-term dexamethasone treatment did not impair salivary gland function, whereas long-term dexamethasone treatment diminished store-operated Ca2+ entry, resulting in hyposalivation in mouse submandibular glands.
Collapse
Affiliation(s)
- Yuichiro Kusuda
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Yusuke Kondo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan.
| | - Yuta Miyagi
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Takashi Munemasa
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Yusuke Hori
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Fumiko Aonuma
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Shintaro Tsuka
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Taro Mukaibo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Chihiro Masaki
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| | - Ryuji Hosokawa
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Fukuoka, 803-8580, Japan
| |
Collapse
|
6
|
Dong B, Song W, Lu Y, Kong X, Mehmood AH, Lin W. An ultrasensitive ratiometric fluorescent probe based on the ICT-PET-FRET mechanism for the quantitative measurement of pH values in the endoplasmic reticulum (ER). Chem Commun (Camb) 2019; 55:10776-10779. [DOI: 10.1039/c9cc03114f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual-site ratiometric probe based on the ICT-PET-FRET mechanism for quantitatively measuring the pH values of the ER was developed.
Collapse
Affiliation(s)
- Baoli Dong
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| | - Wenhui Song
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| | - Yaru Lu
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| | - Xiuqi Kong
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| | - Abdul Hadi Mehmood
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| | - Weiying Lin
- Institute of Fluorescent Probes for Biological Imaging
- School of Chemistry and Chemical Engineering
- School of Materials Science and Engineering
- University of Jinan
- Jinan
| |
Collapse
|
7
|
Sudheesh KV, Joseph MM, Philips DS, Samanta A, Kumar Maiti K, Ajayaghosh A. pH-Controlled Nanoparticles Formation and Tracking of Lysosomal Zinc Ions in Cancer Cells by Fluorescent Carbazole-Bipyridine Conjugates. ChemistrySelect 2018. [DOI: 10.1002/slct.201703131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Karivachery V. Sudheesh
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Manu M. Joseph
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Divya S. Philips
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Animesh Samanta
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Kaustabh Kumar Maiti
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| | - Ayappanpillai Ajayaghosh
- Chemical Sciences and Technology Division; CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum 695019 India
| |
Collapse
|
8
|
Bekhbat M, Rowson SA, Neigh GN. Checks and balances: The glucocorticoid receptor and NFĸB in good times and bad. Front Neuroendocrinol 2017; 46:15-31. [PMID: 28502781 PMCID: PMC5523465 DOI: 10.1016/j.yfrne.2017.05.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/21/2017] [Accepted: 05/09/2017] [Indexed: 01/23/2023]
Abstract
Mutual regulation and balance between the endocrine and immune systems facilitate an organism's stress response and are impaired following chronic stress or prolonged immune activation. Concurrent alterations in stress physiology and immunity are increasingly recognized as contributing factors to several stress-linked neuropsychiatric disorders including depression, anxiety, and post-traumatic stress disorder. Accumulating evidence suggests that impaired balance and crosstalk between the glucocorticoid receptor (GR) and nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB) - effectors of the stress and immune axes, respectively - may play a key role in mediating the harmful effects of chronic stress on mood and behavior. Here, we first review the molecular mechanisms of GR and NFκB interactions in health, then describe potential shifts in the GR-NFκB dynamics in chronic stress conditions within the context of brain circuitry relevant to neuropsychiatric diseases. Furthermore, we discuss developmental influences and sex differences in the regulation of these two transcription factors.
Collapse
Affiliation(s)
- Mandakh Bekhbat
- Emory University, Graduate Division of Biological Sciences, Neuroscience Graduate Program, United States
| | - Sydney A Rowson
- Emory University, Graduate Division of Biological Sciences, Molecular and Systems Pharmacology Graduate Studies Program, United States
| | - Gretchen N Neigh
- Virginia Commonwealth University, Department of Anatomy & Neurobiology, United States.
| |
Collapse
|
9
|
Mok HP, Lu F, Zhang HY, Gao Q. Perioperative corticosteroids for reducing postoperative complications following esophagectomy. Hippokratia 2015. [DOI: 10.1002/14651858.cd011955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hsiao-Pei Mok
- Southern Medical University; Department of Plastic and Cosmetic Surgery, Southern Hospital; Guangzhou Guangdong China
- Southern Medical University; Guangzhou China
| | - Feng Lu
- Southern Medical University; Department of Plastic and Cosmetic Surgery, Southern Hospital; Guangzhou Guangdong China
| | - Hong-Yu Zhang
- Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences; Department of Cardiovascular Surgery; Guangzhou China
| | - Qiang Gao
- Guangdong General Hospital, Guangdong Cardiovascular Institute, Guangdong Academy of Medical Sciences; Department of Cardiovascular Surgery; Guangzhou China
| |
Collapse
|
10
|
Reddy G U, A AH, Ali F, Taye N, Chattopadhyay S, Das A. FRET-Based Probe for Monitoring pH Changes in Lipid-Dense Region of Hct116 Cells. Org Lett 2015; 17:5532-5. [DOI: 10.1021/acs.orglett.5b02568] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Upendar Reddy G
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Anila H. A
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Firoj Ali
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Nandaraj Taye
- Chromatin
and Disease Biology Laboratory, National Centre for Cell Science, Pune 411007, India
| | - Samit Chattopadhyay
- Chromatin
and Disease Biology Laboratory, National Centre for Cell Science, Pune 411007, India
| | - Amitava Das
- Organic
Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| |
Collapse
|
11
|
Borah R, Mamidi N, Panda S, Gorai S, Pathak SK, Manna D. Elucidating the interaction of γ-hydroxymethyl-γ-butyrolactone substituents with model membranes and protein kinase C-C1 domains. MOLECULAR BIOSYSTEMS 2015; 11:1389-99. [PMID: 25820877 DOI: 10.1039/c5mb00100e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The protein kinase C (PKC) family of proteins is an attractive drug target. Dysregulation of PKC-dependent signalling pathways is related to several human diseases like cancer, immunological and other diseases. We approached the problem of altering PKC activities by developing C1 domain-based PKC ligands. In this report γ-hydroxymethyl-γ-butyrolactone (HGL) substituents were investigated in an effort to develop small molecule-based PKC regulators with higher specificity for C1 domain than the endogenous diacylglycerols (DAGs). Extensive analysis of membrane-ligands interaction measurements revealed that the membrane-active compounds strongly interact with the lipid bilayers and the hydrophilic parts of compounds localize at the bilayer/water interface. The pharmacophores like hydroxymethyl, carbonyl groups and acyl-chain length of the compounds are crucial for their interaction with the C1 domain proteins. The potent compounds showed more than 17-fold stronger binding affinity for the C1 domains than DAG under similar experimental conditions. Nonradioactive kinase assay confirmed that these potent compounds have similar or better PKC dependent phosphorylation capabilities than DAG under similar experimental conditions. Hence, our findings reveal that these HGL analogues represent an attractive group of structurally simple C1 domain ligands that can be further structurally altered to improve their potencies.
Collapse
Affiliation(s)
- Rituparna Borah
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | | | | | | | | | | |
Collapse
|
12
|
Bousquet J, Bachert C, Bernstein J, Canonica GW, Carr W, Dahl R, Demoly P, Devillier P, Hellings P, Fokkens W, Klimek L, Lieberman P, Meltzer E, Price D, Ryan D, Wahn U. Advances in pharmacotherapy for the treatment of allergic rhinitis; MP29-02 (a novel formulation of azelastine hydrochloride and fluticasone propionate in an advanced delivery system) fills the gaps. Expert Opin Pharmacother 2015; 16:913-28. [PMID: 25747125 DOI: 10.1517/14656566.2015.1020789] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION Effective pharmacologic treatment exists for most patients suffering from allergic rhinitis (AR). However, both in clinical trials and in real-life studies, many patients are dissatisfied with treatment. Physicians often use multiple therapies, in an attempt to improve symptom control, often with limited evidence of success. Novel treatment options are needed and must consider unmet medical needs. AREAS COVERED This article reviews the clinical data for a new AR treatment. MP29-02 (Dymista®, Meda, Solna, Sweden) contains azelastine hydrochloride (AZE) and fluticasone propionate (FP), in a novel formulation and delivered in an improved device as a single nasal spray. It has shown superior efficacy in AR patients than either commercially available AZE or FP monotherapy for both nasal and ocular symptom relief, regardless of disease severity. MP29-02 also provided more effective and rapid symptom relief than either AZE or FP monotherapy delivered in the MP29-02 formulation and device. However, the effect was less than that observed versus commercial comparators, suggesting the impact of formulation and device on clinical efficacy. EXPERT OPINION MP29-02 simplifies AR management, surpassing the efficacy of gold standard treatment, intranasal corticosteroids (INS), for the first time. It is indicated for the treatment of moderate-to-severe seasonal allergic rhinitis and perennial allergic rhinitis when monotherapy with either intranasal antihistamine or INS is NOT considered sufficient. Most patients present with moderate/severe disease, with evidence of current or previous treatment insufficiency. MP29-02 should be the treatment of choice for these patients.
Collapse
Affiliation(s)
- Jean Bousquet
- Hopital Arnaud de Villeneuve University Hospital and Inserm , Montpellier CSP1018 , France +33 467336105 ; +33 467416702 ;
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Bagar T, Benčina M. Antiarrhythmic drug amiodarone displays antifungal activity, induces irregular calcium response and intracellular acidification of Aspergillus niger - amiodarone targets calcium and pH homeostasis of A. niger. Fungal Genet Biol 2012; 49:779-91. [PMID: 22906851 DOI: 10.1016/j.fgb.2012.07.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 06/18/2012] [Accepted: 07/23/2012] [Indexed: 10/28/2022]
Abstract
The rapidly developing resistance of fungi to antifungal drugs is a serious health problem. Today's drugs mainly target cell membrane composition and synthesis. Moreover, some of them have serious side effects. New antifungal drugs targeting different molecular pathways are necessary. Amiodarone, an FDA approved antiarrhythmic drug displays antifungal activity. It targets calcium and pH homeostasis. In concentrations above 25 μM, it inhibits the growth of the filamentous fungi Aspergillus niger. It triggers a biphasic calcium response accompanied by a high [Ca(2+)](c) resting level and an intracellular acidification from 7.5 to 6.0, both of which are concentration dependent. Both extracellular calcium and calcium from intracellular organelles are sources of the transient second cytosolic calcium peak, whose amplitude is 0.12 μM for cells treated with 0.1mM amiodarone. In P-type ATPase deficient A. niger strains pmrAΔ and pmcAΔ, the [Ca(2+)](c) resting level after amiodarone treatment is at least twice as high as that of the wild type, which correlates with fungal viability and hypersensitivity to amiodarone. A combination of amiodarone and amphotericin B is additive in terms of cell viability and cytosolic calcium influx. In contrast, a combination of azole drugs and amiodarone has a synergistic effect on the viability of fungi.
Collapse
Affiliation(s)
- Tanja Bagar
- Department of Biotechnology, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | | |
Collapse
|
14
|
Zhang Y, Sheng H, Qi J, Ma B, Sun J, Li S, Ni X. Glucocorticoid acts on a putative G protein-coupled receptor to rapidly regulate the activity of NMDA receptors in hippocampal neurons. Am J Physiol Endocrinol Metab 2012; 302:E747-58. [PMID: 22146309 DOI: 10.1152/ajpendo.00302.2011] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucocorticoids (GCs) have been demonstrated to act through both genomic and nongenomic mechanisms. The present study demonstrated that corticosterone rapidly suppressed the activity of N-methyl-D-aspartate (NMDA) receptors in cultured hippocampal neurons. The effect was maintained with corticosterone conjugated to bovine serum albumin and blocked by inhibition of G protein activity with intracellular GDP-β-S application. Corticosterone increased GTP-bound G(s) protein and cyclic AMP (cAMP) production, activated phospholipase Cβ(3) (PLC-β(3)), and induced inositol-1,4,5-triphosphate (IP(3)) production. Blocking PLC and the downstream cascades with PLC inhibitor, IP(3) receptor antagonist, Ca(2+) chelator, and protein kinase C (PKC) inhibitors prevented the actions of corticosterone. Blocking adenylate cyclase (AC) and protein kinase A (PKA) caused a decrease in NMDA-evoked currents. Application of corticosterone partly reversed the inhibition of NMDA currents caused by blockage of AC and PKA. Intracerebroventricular administration of corticosterone significantly suppressed long-term potentiation (LTP) in the CA1 region of the hippocampus within 30 min in vivo, implicating the possibly physiological significance of rapid effects of GC on NMDA receptors. Taken together, our results indicate that GCs act on a putative G protein-coupled receptor to activate multiple signaling pathways in hippocampal neurons, and the rapid suppression of NMDA activity by GCs is dependent on PLC and downstream signaling.
Collapse
MESH Headings
- Animals
- Blotting, Western
- CA1 Region, Hippocampal/cytology
- CA1 Region, Hippocampal/drug effects
- CA1 Region, Hippocampal/metabolism
- Cells, Cultured
- Cyclic AMP/metabolism
- Excitatory Postsynaptic Potentials
- Female
- Glucocorticoids/pharmacology
- Hippocampus/cytology
- Hippocampus/drug effects
- Hippocampus/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/metabolism
- Long-Term Potentiation/drug effects
- Male
- Neurons/drug effects
- Neurons/metabolism
- Patch-Clamp Techniques
- Pregnancy
- Radioimmunoassay
- Rats
- Rats, Sprague-Dawley
- Receptors, G-Protein-Coupled/drug effects
- Receptors, Glucocorticoid/drug effects
- Receptors, N-Methyl-D-Aspartate/metabolism
- Signal Transduction/drug effects
- Synapses/drug effects
- Synapses/physiology
- Type C Phospholipases/metabolism
Collapse
Affiliation(s)
- Yanmin Zhang
- Department of Physiology, Second Military Medical University, Shanghai, China
| | | | | | | | | | | | | |
Collapse
|
15
|
Nino G, Baloglu O, Gutierrez MJ, Schwartz M. Scientific rationale for the use of alpha-adrenergic agonists and glucocorticoids in the therapy of pediatric stridor. Int J Otolaryngol 2011; 2011:575018. [PMID: 22220172 PMCID: PMC3246738 DOI: 10.1155/2011/575018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 08/26/2011] [Indexed: 11/18/2022] Open
Abstract
Purpose. The most common pharmacological therapies used in the treatment of stridor in children are glucocorticosteroids (GC) and alpha-adrenergic (αAR) agonists. Despite the long-standing reported efficacy of these medications, there is a paucity of data relating to their actual mechanisms of action in the upper airway. Summary. There is compelling scientific evidence supporting the use of αAR-agonists and GCs in pediatric stridor. αAR signaling and GCs regulate the vasomotor tone in the upper airway mucosa. The latter translates into better airflow dynamics, as delineated by human and nonhuman upper airway physiological models. In turn, clinical trials have demonstrated that GCs and the nonselective αAR agonist, epinephrine, improve respiratory distress scores and reduce the need for further medical care in children with stridor. Future research is needed to investigate the role of selective αAR agonists and the potential synergism of GCs and αAR-signaling in the treatment of upper airway obstruction and stridor.
Collapse
Affiliation(s)
- Gustavo Nino
- Division of Pediatric Pulmonary Medicine, Penn State Hershey Children's Hospital, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
- Penn State Sleep Research and Treatment Center, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
| | - Orkun Baloglu
- Division of Pediatric Pulmonary Medicine, Penn State Hershey Children's Hospital, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Maria J. Gutierrez
- Division of Allergy and Immunology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| | - Michael Schwartz
- Division of Pediatric Pulmonary Medicine, Penn State Hershey Children's Hospital, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
| |
Collapse
|
16
|
Abstract
Meconium aspiration syndrome is a serious neonatal disease with complex pathophysiology. With respect to the contribution of meconium-induced lung edema, inflammation and vasoconstriction on the course of the disease, glucocorticoids are increasingly used in the treatment of MAS despite the fact that principal questions on the choice of GCs derivative, mode of delivery and dosing have not been answered yet. To bring a complex insight into the topic, this article reviews the pathomechanisms of MAS, mechanisms of action of GCs, as well as the advantages and disadvantages of GCs administration in experimental models and newborns with MAS.
Collapse
|
17
|
Abstract
Mineralocorticoids and glucocorticoids are steroid hormones that are released by the adrenal cortex in response to stress and hydromineral imbalance. Historically, adrenocorticosteroid actions are attributed to effects on gene transcription. More recently, however, it has become clear that genome-independent pathways represent an important facet of adrenal steroid actions. These hormones exert nongenomic effects throughout the body, although a significant portion of their actions are specific to the central nervous system. These actions are mediated by a variety of signalling pathways, and lead to physiologically meaningful events in vitro and in vivo. We review the nongenomic effects of adrenal steroids in the central nervous system at the levels of behaviour, neural system activity, individual neurone activity and subcellular signalling activity. A clearer understanding of adrenal steroid activity in the central nervous system will lead to a better ability to treat human disease as well as reduce the side-effects of the steroid treatments already in use.
Collapse
Affiliation(s)
- N K Evanson
- Department of Psychiatry, University of Cincinnati, OH 45237, USA.
| | | | | | | |
Collapse
|
18
|
Grzanka A, Misiołek M, Golusiński W, Jarząb J. Molecular mechanisms of glucocorticoids action: implications for treatment of rhinosinusitis and nasal polyposis. Eur Arch Otorhinolaryngol 2010; 268:247-53. [PMID: 20628753 PMCID: PMC3021186 DOI: 10.1007/s00405-010-1330-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 06/25/2010] [Indexed: 01/09/2023]
Abstract
Intra-nasal glucocorticoids are the most effective drugs available for rhinosinusitis and nasal polyposis treatment. Their effectiveness depends on many factors and not all of them have been well recognized so far. The authors present the basic information on molecular mechanisms of glucocorticoid action, direct and indirect effects of glucocorticoids on transcription of genes encoding inflammatory mediators. They focus on recently proved nongenomic mechanisms which appear quickly, from several seconds to minutes after glucocorticoid administration and discuss clinical implications resulting from this knowledge. Discovery of nongenomic glucocorticoid actions allows for better use of these drugs in clinical practice.
Collapse
Affiliation(s)
- Alicja Grzanka
- Clinical Department of Internal Diseases, Dermatology and Allergology, Zabrze, Medical University of Silesia, M.C.Skłodowskiej 10, 41-800 Katowice, Poland.
| | | | | | | |
Collapse
|
19
|
Mastruzzo C, Contrafatto MR, Crimi C, Palermo F, Vancheri C, Crimi N. Acute additive effect of montelukast and beclomethasone on AMP induced bronchoconstriction. Respir Med 2010; 104:1417-24. [PMID: 20471234 DOI: 10.1016/j.rmed.2010.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Revised: 04/13/2010] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
Abstract
Bronchial hyperresponsiveness to 5-adenosine mono-phosphate (AMP) is a marker of airway inflammation. Inhaled corticosteroids and antileukotrienes are used as anti-inflammatory drugs for the treatment of asthma. To find out if these two drugs exert their protection in an additive fashion, we compared the effects of acute treatment with inhaled beclomethasone (BDP) and montelukast (ML), alone or in combination, on methacholine and AMP induced bronchoconstriction. 15 asthmatic patients undertook methacholine and AMP challenges at baseline and after receiving ML or BDP, alone or in combination, in a randomized, double-blind, double-dummy placebo-controlled, crossover design. BDP pretreatment significantly increased the AMP PC(20) value (68.34+/-15.9mg/mL) as compared to placebo (22.87+/-5.7mg/mL). Combined treatment, BDP plus ML, afforded a further significant increase of AMP PC(20) (154.57+/-55.0mg/mL) as compared to each single treatment. The significant protection exerted by combined treatment as compared to each single active treatment was also demonstrated by the change of AMP PC(20) doubling dose as compared to placebo and each single active treatment. Our findings suggest that these two agents exert their acute additive protection against AMP induced bronchoconstriction acting on distinct inflammatory pathways and their combined use might provide greater protection against inflammatory response elicited by AMP than either drug alone.
Collapse
Affiliation(s)
- Claudio Mastruzzo
- Department of Internal and Specialistic Medicine, Section of Respiratory and Section of Infectious Diseases, University of Catania, Via Passo Gravina 187, Catania, Italy.
| | | | | | | | | | | |
Collapse
|
20
|
Kippelen P, Larsson J, Anderson SD, Brannan JD, Delin I, Dahlen B, Dahlen SE. Acute effects of beclomethasone on hyperpnea-induced bronchoconstriction. Med Sci Sports Exerc 2010; 42:273-80. [PMID: 19927031 DOI: 10.1249/mss.0b013e3181b541b1] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE The aim of this study was to assess whether a single high dose of beclomethasone dipropionate (BDP) could blunt mast cell activation and bronchoconstriction after eucapnic voluntary hyperpnea (EVH). METHODS In this model of exercise-induced bronchoconstriction (EIB), seven athletes with EIB and eight untrained subjects with mild asthma performed two EVH tests 5.5 h apart on the same day; the first challenge after inhalation of a placebo aerosol and the second 4 h after inhalation of BDP (1500 microg). Prechallenge and postchallenge pulmonary function and urinary excretion of the mast cell mediator 9alpha, 11beta-prostaglandin (PG) F2 were followed, as well as urinary excretion of the bronchoconstrictor leukotriene (LT) E4. RESULTS The EVH-induced bronchoconstriction was inhibited by BDP in both groups (P < 0.001): in athletes, mean +/- SEM percent fall in forced expiratory volume in 1 s was 22% +/- 4% after placebo versus 13% +/- 3% after BDP; in subjects with asthma, 23% +/- 4% after placebo versus 14 +/- 3% after BDP. This inhibition of airway response was associated with a significant reduction in the urinary excretion of 9alpha,11beta-PGF2 (P = 0.039) and LTE4 (P = 0.003) in both groups. Significant correlations were found between the percent fall in forced expiratory volume in 1 s and the increase in urinary excretion of both mediators 9alpha,11beta-PGF2 (r = 0.544, P = 0.002) and LTE4 (r = 0.380, P = 0.038) after EVH. CONCLUSIONS We conclude that a single dose of BDP has an acute protective effect on the bronchial response to hyperpnea in both untrained subjects with asthma and athletes with EIB. This effect was associated with decreased excretion of urinary mediators, suggesting that BDP blunted the mast cell activation.
Collapse
Affiliation(s)
- Pascale Kippelen
- Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Camperdown, NSW Australia.
| | | | | | | | | | | | | |
Collapse
|
21
|
Chang CP, Wang SW, Huang ZL, Wang OYH, Huang MIT, Lu LM, Tarng DC, Chien CH, Chien EJ. Non-genomic rapid inhibition of Na+/H+-exchange 1 and apoptotic immunosuppression in human T cells by glucocorticoids. J Cell Physiol 2010; 223:679-86. [PMID: 20143335 DOI: 10.1002/jcp.22070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Glucocorticoids (GCs) have been employed as immunosuppressive agents for many years. However, it is still unclear how GCs instantly uncouple T cells from acute stressful inflammatory. In terms of time scale, the genomic activity of the classic GC receptor cannot fulfill this role under crisis; but a rapid non-genomic response can. In a previous study, intracellular acidification was found to be due to a rapid non-genomic inhibition of Na(+)/H(+)-exchange 1 (NHE1) and this event led to the immunosuppression of T cell proliferation by progesterone. The aim of this study was to examine whether there is a rapid acidification response caused by an inhibition of NHE1 activity and to explore the differential non-genomic effect on immunosuppression of hydrocortisone and dexamethasone. The IC(50) values for NHE1-dependent pH(i) recovery by hydrocortisone and dexamethasone are 250 and 1 nM, respectively. Co-stimulation of GCs with phytohemagglutinin (PHA) is able to inhibit PHA-induced IL-2 secretion, IL-4 secretion, and T-cell proliferation. Furthermore, apoptosis in PHA-activated T cells is not induced by hydrocortisone but by dexamethasone. The mechanism of immunosuppression on proliferation by dexamethasone was found to be different of hydrocortisone and seems to involve cytotoxicity against T cells. Moreover, apoptosis induced by dexamethasone and impermeable dexamethasone-bovine serum albumin suggests that the apoptotic immunosuppression occurs through both the plasma membrane and cytoplasmic sites. The rapid inhibitory responses triggered by GCs would seem to release T cells instantly when an acute stress-related response is needed. Nonetheless, the apoptotic immunosuppression by dexamethasone is attributable to its severe cytotoxicity.
Collapse
Affiliation(s)
- Ching-Pang Chang
- Institute of Physiology, School of Medicine, National Yang-Ming University, Taipei, Taiwan, Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Aldosterone and Cortisol Acutely Stimulate Na+/H+ Exchanger Activity in the Syncytiotrophoblast of the Human Placenta: Effect of Fetal Sex. Placenta 2010; 31:289-94. [DOI: 10.1016/j.placenta.2009.12.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 12/21/2009] [Accepted: 12/23/2009] [Indexed: 11/18/2022]
|
23
|
Suzuki K, Kosho I, Namiki H. Characterization of the unique regulatory mechanisms of phorbol ester-induced polymorphonuclear leukocyte spreading in an acidified environment. Eur J Pharmacol 2008; 588:301-8. [DOI: 10.1016/j.ejphar.2008.04.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Revised: 04/02/2008] [Accepted: 04/09/2008] [Indexed: 11/28/2022]
|
24
|
Malcher-Lopes R, Franco A, Tasker JG. Glucocorticoids shift arachidonic acid metabolism toward endocannabinoid synthesis: a non-genomic anti-inflammatory switch. Eur J Pharmacol 2008; 583:322-39. [PMID: 18295199 DOI: 10.1016/j.ejphar.2007.12.033] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2007] [Revised: 12/12/2007] [Accepted: 12/16/2007] [Indexed: 11/24/2022]
Abstract
Glucocorticoids are capable of exerting both genomic and non-genomic actions in target cells of multiple tissues, including the brain, which trigger an array of electrophysiological, metabolic, secretory and inflammatory regulatory responses. Here, we have attempted to show how glucocorticoids may generate a rapid anti-inflammatory response by promoting arachidonic acid-containing endocannabinoids biosynthesis. According to our hypothesized model, non-genomic action of glucocorticoids results in the global shift of membrane lipid metabolism, subverting metabolic pathways toward the synthesis of the anti-inflammatory endocannabinoids, anandamide (AEA) and 2-arachidonoyl-glycerol (2-AG), and away from arachidonic acid production. Post-transcriptional inhibition of cyclooxygenase-2 (COX(2)) synthesis by glucocorticoids assists this mechanism by suppressing the synthesis of pro-inflammatory prostaglandins as well as endocannabinoid-derived prostanoids. In the central nervous system (CNS) this may represent a major neuroprotective system, which may cross-talk with leptin signaling in the hypothalamus allowing for the coordination between energy homeostasis and the inflammatory response.
Collapse
|
25
|
Wang D, Zhang H, Lang F, Yun CC. Acute activation of NHE3 by dexamethasone correlates with activation of SGK1 and requires a functional glucocorticoid receptor. Am J Physiol Cell Physiol 2006; 292:C396-404. [PMID: 16971495 PMCID: PMC2695591 DOI: 10.1152/ajpcell.00345.2006] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucocorticoids stimulate the intestinal absorption of Na(+) and water partly by regulation of the Na(+)/H(+) exchanger 3 (NHE3). Previous studies have shown both genomic and nongenomic regulation of NHE3 by glucocorticoids. Serum and glucocorticoid-inducible kinase 1 (SGK1) has been shown to be part of this cascade, where phosphorylation of NHE3 by SGK1 initiates the translocation of NHE3 to the cell surface. In the present work, we examined a series of changes in SGK1 and NHE3 induced by glucocorticoids using human colonic Caco-2 and opossum kidney cells. We found that dexamethasone rapidly stimulated SGK1 mRNAs, but a significant change in protein abundance was not detected. Instead, there was an increase in SGK1 kinase activity as early as at 2 h. An increase in NHE3 protein abundance was not detected until 12 h of dexamethasone exposure, although the transport activity was significantly stimulated at 4 h. These data demonstrate that the changes of SGK1 precede those of NHE3. Chronic regulation (24 h) of NHE3 was blocked completely by prevention of protein synthesis with cycloheximide or actinomycin D and by the glucocorticoid receptor blocker RU486. The acute effect of dexamethasone was similarly abrogated by RU486, but was insensitive to cycloheximide and actinomycin D. Similarly, the stimulation of SGK1 activity by dexamethasone was blocked by RU486 but not by actinomycin D. Together, these data show that the acute effect of glucocorticoids on NHE3 is mediated by a glucocorticoid receptor dependent mechanism that activates SGK1 in a nongenomic manner.
Collapse
Affiliation(s)
- Dongsheng Wang
- Department of Physiology, Emory University School of Medicine, 615 Michael Street, Atlanta, GA 30322, USA
| | | | | | | |
Collapse
|