Thiolated chitosan nanoparticles enhance anti-inflammatory effects of intranasally delivered theophylline.

Abstract:

BACKGROUND:Chitosan, a polymer derived from chitin, has been used for nasal drug delivery because of its biocompatibility, biodegradability and bioadhesiveness. Theophylline is a drug that reduces the inflammatory effects of allergic asthma but is difficult to administer at an appropriate dosage without causing adverse side effects. It was hypothesized that adsorption of theophylline to chitosan nanoparticles modified by the addition of thiol groups would improve theophylline absorption by the bronchial epithelium and enhance its anti-inflammatory effects. OBJECTIVES:We sought to develop an improved drug-delivery matrix for theophylline based on thiolated chitosan, and to investigate whether thiolated chitosan nanoparticles (TCNs) can enhance theophylline's capacity to alleviate allergic asthma. METHODS:A mouse model of allergic asthma was used to test the effects of theophylline in vivo. BALB/c mice were sensitized to ovalbumin (OVA) and OVA-challenged to produce an inflammatory allergic condition. They were then treated intranasally with theophylline alone, chitosan nanoparticles alone or theophylline adsorbed to TCNs. The effects of theophylline on cellular infiltration in bronchoalveolar lavage (BAL) fluid, histopathology of lung sections, and apoptosis of lung cells were investigated to determine the effectiveness of TCNs as a drug-delivery vehicle for theophylline. RESULTS:Theophylline alone exerts a moderate anti-inflammatory effect, as evidenced by the decrease in eosinophils in BAL fluid, the reduction of bronchial damage, inhibition of mucus hypersecretion and increased apoptosis of lung cells. The effects of theophylline were significantly enhanced when the drug was delivered by TCNs. CONCLUSION:Intranasal delivery of theophylline complexed with TCNs augmented the anti-inflammatory effects of the drug compared to theophylline administered alone in a mouse model of allergic asthma. The beneficial effects of theophylline in treating asthma may be enhanced through the use of this novel drug delivery system.

journal_name

Respir Res

journal_title

Respiratory research

authors

Lee DW,Shirley SA,Lockey RF,Mohapatra SS

doi

10.1186/1465-9921-7-112

subject

Has Abstract

pub_date

2006-08-24 00:00:00

pages

112

eissn

1465-9921

issn

1465-993X

pii

1465-9921-7-112

journal_volume

7

pub_type

杂志文章
  • Impaired anti-inflammatory action of glucocorticoid in neutrophil from patients with steroid-resistant asthma.

    abstract:BACKGROUND:Steroid resistant (SR) asthma is characterized by persistent airway inflammation that fails to resolve despite treatment with high doses of corticosteroids. Furthermore, SR patient airways show increased numbers neutrophils, which are less responsive to glucocorticoid. The present study seeks to determine wh...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-016-0462-0

    authors: Wang M,Gao P,Wu X,Chen Y,Feng Y,Yang Q,Xu Y,Zhao J,Xie J

    更新日期:2016-11-16 00:00:00

  • Matrix metalloproteinases in lung biology.

    abstract::Despite much information on their catalytic properties and gene regulation, we actually know very little of what matrix metalloproteinases (MMPs) do in tissues. The catalytic activity of these enzymes has been implicated to function in normal lung biology by participating in branching morphogenesis, homeostasis, and r...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/rr33

    authors: Parks WC,Shapiro SD

    更新日期:2001-01-01 00:00:00

  • Withdrawal of inhaled corticosteroids in individuals with COPD--a systematic review and comment on trial methodology.

    abstract::Inhaled corticosteroids (ICS) reduce COPD exacerbation frequency and slow decline in health related quality of life but have little effect on lung function, do not reduce mortality, and increase the risk of pneumonia. We systematically reviewed trials in which ICS have been withdrawn from patients with COPD, with the ...

    journal_title:Respiratory research

    pub_type: 杂志文章,meta分析,评审

    doi:10.1186/1465-9921-12-107

    authors: Nadeem NJ,Taylor SJ,Eldridge SM

    更新日期:2011-08-12 00:00:00

  • Signaling and regulation of G protein-coupled receptors in airway smooth muscle.

    abstract::Signaling through G protein-coupled receptors (GPCRs) mediates numerous airway smooth muscle (ASM) functions including contraction, growth, and "synthetic" functions that orchestrate airway inflammation and promote remodeling of airway architecture. In this review we provide a comprehensive overview of the GPCRs that ...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:

    authors: Billington CK,Penn RB

    更新日期:2003-01-01 00:00:00

  • Clinical outcomes stratified by baseline functional class after initial combination therapy for pulmonary arterial hypertension.

    abstract:BACKGROUND:Initial combination therapy with ambrisentan and tadalafil reduced the risk of clinical failure events for treatment-naïve participants with pulmonary arterial hypertension (PAH) as compared to monotherapy. Previous studies in PAH have demonstrated greater treatment benefits in more symptomatic participants....

    journal_title:Respiratory research

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s12931-019-1180-1

    authors: White RJ,Vonk-Noordegraaf A,Rosenkranz S,Oudiz RJ,McLaughlin VV,Hoeper MM,Grünig E,Ghofrani HA,Chakinala MM,Barberà JA,Blair C,Langley J,Frost AE

    更新日期:2019-09-12 00:00:00

  • Local therapy with CpG motifs in a murine model of allergic airway inflammation in IFN-beta knock-out mice.

    abstract:BACKGROUND:CpG oligodeoxynucleotides (CpG-ODN) are capable of inducing high amounts of type I IFNs with many immunomodulatory properties. Furthermore, type-I IFNs have been proposed to play a key role in mediating effects of CpG-ODN. The precise role of IFN-beta in the immunomodulatory effects of CpG-ODN is not known. ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-25

    authors: Matheu V,Treschow A,Teige I,Navikas V,Issazadeh-Navikas S

    更新日期:2005-03-05 00:00:00

  • Sputum and blood transcriptomics characterisation of the inhaled PDE4 inhibitor CHF6001 on top of triple therapy in patients with chronic bronchitis.

    abstract:BACKGROUND:Although phosphodiesterase-4 (PDE4) inhibitors have been shown to reduce COPD exacerbation rate, their biological mechanism of action is not completely elucidated at the molecular level. We aimed to characterise the whole genome gene expression profile of the inhaled PDE4-inhibitor CHF6001 on top of triple t...

    journal_title:Respiratory research

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1186/s12931-020-1329-y

    authors: Govoni M,Bassi M,Vezzoli S,Lucci G,Emirova A,Nandeuil MA,Petruzzelli S,Jellema GL,Afolabi EK,Colgan B,Leaker B,Kornmann O,Beeh KM,Watz H,Singh D

    更新日期:2020-03-20 00:00:00

  • IL13 gene polymorphisms modify the effect of exposure to tobacco smoke on persistent wheeze and asthma in childhood, a longitudinal study.

    abstract:BACKGROUND:Tobacco smoke and genetic susceptibility are risk factors for asthma and wheezing. The aim of this study was to investigate whether there is a combined effect of interleukin-13 gene (IL13) polymorphisms and tobacco smoke on persistent childhood wheezing and asthma. METHODS:In the Isle of Wight birth cohort ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-9-2

    authors: Sadeghnejad A,Karmaus W,Arshad SH,Kurukulaaratchy R,Huebner M,Ewart S

    更新日期:2008-01-10 00:00:00

  • BARD1 mediates TGF-β signaling in pulmonary fibrosis.

    abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a rapid progressive fibro-proliferative disorder with poor prognosis similar to lung cancer. The pathogenesis of IPF is uncertain, but loss of epithelial cells and fibroblast proliferation are thought to be central processes. Previous reports have shown that BARD1 expre...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-015-0278-3

    authors: André PA,Prêle CM,Vierkotten S,Carnesecchi S,Donati Y,Chambers RC,Pache JC,Crestani B,Barazzone-Argiroffo C,Königshoff M,Laurent GJ,Irminger-Finger I

    更新日期:2015-09-29 00:00:00

  • Effects of cigarette smoke on barrier function and tight junction proteins in the bronchial epithelium: protective role of cathelicidin LL-37.

    abstract:BACKGROUND:Airway epithelial barrier function is maintained by the formation of tight junctions (TJs) and adherens junctions (AJs). Inhalation of cigarette smoke causes airway epithelial barrier dysfunction and may contribute to the pathogenesis of chronic lung diseases such as asthma and chronic obstructive pulmonary ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-1226-4

    authors: Tatsuta M,Kan-O K,Ishii Y,Yamamoto N,Ogawa T,Fukuyama S,Ogawa A,Fujita A,Nakanishi Y,Matsumoto K

    更新日期:2019-11-09 00:00:00

  • Heterogeneous burden of lung disease in smokers with borderline airflow obstruction.

    abstract:BACKGROUND:The identification of smoking-related lung disease in current and former smokers with normal FEV1 is complex, leading to debate regarding using a ratio of forced expiratory volume in 1 s to forced vital capacity (FEV1/FVC) of less than 0.70 versus the predicted lower limit of normal (LLN) for diagnosis of ai...

    journal_title:Respiratory research

    pub_type: 杂志文章,多中心研究

    doi:10.1186/s12931-018-0911-z

    authors: Pirozzi CS,Gu T,Quibrera PM,Carretta EE,Han MK,Murray S,Cooper CB,Tashkin DP,Kleerup EC,Barjaktarevic I,Hoffman EA,Martinez CH,Christenson SA,Hansel NN,Graham Barr R,Bleecker ER,Ortega VE,Martinez FJ,Kanner RE,Paine

    更新日期:2018-11-20 00:00:00

  • Tissue fibrocytes in patients with mild asthma: a possible link to thickness of reticular basement membrane?

    abstract:BACKGROUND:Myofibroblasts, proposed as being derived from circulating fibrocytes, are considered to be important cells in thickening of the basement membrane in patients with asthma. We have studied the correlation of tissue fibrocyte levels to basement membrane thickness and the presence of fibrocytes in bronchoalveol...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-7-50

    authors: Nihlberg K,Larsen K,Hultgårdh-Nilsson A,Malmström A,Bjermer L,Westergren-Thorsson G

    更新日期:2006-03-29 00:00:00

  • Arginine deficiency augments inflammatory mediator production by airway epithelial cells in vitro.

    abstract:BACKGROUND:Previously we showed that reduced availability of the essential amino acid tryptophan per se attenuates post-transcriptional control of interleukin (IL)-6 and IL-8 leading to hyperresponsive production of these inflammatory mediators by airway epithelial cells. Availability of the non-essential amino acid ar...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-10-62

    authors: Fan XY,van den Berg A,Snoek M,van der Flier LG,Smids B,Jansen HM,Liu RY,Lutter R

    更新日期:2009-07-03 00:00:00

  • Regenerative defect in vastus lateralis muscle of patients with chronic obstructive pulmonary disease.

    abstract:BACKGROUND:Impaired skeletal muscle regeneration could contribute to the progression of muscle atrophy in patients with chronic obstructive pulmonary disease (COPD). METHODS:Satellite cells and myogenesis-related proteins were compared between healthy subjects and patients with COPD, with or without muscle atrophy. Sa...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-15-35

    authors: Thériault ME,Paré MÈ,Lemire BB,Maltais F,Debigaré R

    更新日期:2014-03-25 00:00:00

  • Real world evaluation of a novel lateral flow assay (AlphaKit® QuickScreen) for the detection of alpha-1-antitrypsin deficiency.

    abstract:BACKGROUND:Alpha-1-Antitrypsin (AAT) deficiency (AATD) is a hereditary disorder that manifests primarily as pulmonary emphysema and liver cirrhosis. The clinically most relevant mutation causing AATD is a single nucleotide polymorphism Glu342Lys (Z-mutation). Despite the recommendation to test every COPD patient, the c...

    journal_title:Respiratory research

    pub_type: 杂志文章,多中心研究

    doi:10.1186/s12931-018-0826-8

    authors: Greulich T,Rodríguez-Frias F,Belmonte I,Klemmer A,Vogelmeier CF,Miravitlles M

    更新日期:2018-08-13 00:00:00

  • Marked alveolar apoptosis/proliferation imbalance in end-stage emphysema.

    abstract:BACKGROUND:Apoptosis has recently been proposed to contribute to the pathogenesis of emphysema. METHODS:In order to establish if cell fate plays a role even in end-stage disease we studied 16 lungs (9 smoking-associated and 7 alpha1antitrypsin (AAT)-deficiency emphysema) from patients who had undergone lung transplant...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-14

    authors: Calabrese F,Giacometti C,Beghe B,Rea F,Loy M,Zuin R,Marulli G,Baraldo S,Saetta M,Valente M

    更新日期:2005-02-10 00:00:00

  • Whole blood RNA sequencing reveals a unique transcriptomic profile in patients with ARDS following hematopoietic stem cell transplantation.

    abstract:BACKGROUND:The acute respiratory distress syndrome (ARDS) is characterized by the acute onset of hypoxemia and bilateral lung infiltrates in response to an inciting event, and is associated with high morbidity and mortality. Patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) are at increased ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-0981-6

    authors: Englert JA,Cho MH,Lamb AE,Shumyatcher M,Barragan-Bradford D,Basil MC,Higuera A,Isabelle C,Vera MP,Dieffenbach PB,Fredenburgh LE,Kang JB,Bhatt AS,Antin JH,Ho VT,Soiffer RJ,Howrylak JA,Himes BE,Baron RM

    更新日期:2019-01-21 00:00:00

  • Toll-like receptor 2 expression is decreased on alveolar macrophages in cigarette smokers and COPD patients.

    abstract:BACKGROUND:Cigarette smoke exposure including biologically active lipopolysaccharide (LPS) in the particulate phase of cigarette smoke induces activation of alveolar macrophages (AM) and alveolar epithelial cells leading to production of inflammatory mediators. This represents a crucial mechanism in the pathogenesis of...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-6-68

    authors: Droemann D,Goldmann T,Tiedje T,Zabel P,Dalhoff K,Schaaf B

    更新日期:2005-07-08 00:00:00

  • Trends in prevalence and incidence of chronic respiratory diseases from 1990 to 2017.

    abstract:BACKGROUND:Chronic respiratory diseases (CRDs) are leading causes of morbidity worldwide. However, the spatial and temporal trends in prevalence and incidence of CRDs have not been estimated. METHODS:Based on data from the Global Burden of Diseases, Injuries, and Risk Factors Study 2017, we analyzed the prevalence and...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-1291-8

    authors: Xie M,Liu X,Cao X,Guo M,Li X

    更新日期:2020-02-11 00:00:00

  • AIDS patients have increased surfactant protein D but normal mannose binding lectin levels in lung fluid.

    abstract:BACKGROUND:Surfactant protein D (SP-D) and Mannose Binding Lectin (MBL) are collectins that have opsonic and immunoregulatory functions, are found in lung fluid and interact with the human immunodeficiency virus (HIV). We compared collectin levels in lung fluid and serum from HIV infected and normal subjects to determi...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-8-42

    authors: Jambo KC,French N,Zijlstra E,Gordon SB

    更新日期:2007-06-13 00:00:00

  • Epigenetics dysfunction in morbid obesity with or without obstructive sleep apnoea: the EPIMOOSA study.

    abstract:BACKGROUND:Obstructive sleep apnoea (OSA) and morbid obesity (MO), defined by a body mass index ≥35 kg/m2, are two closely related conditions. Recent studies suggest that circulating microRNA (miRNA) plays a potential role in the physiopathology of both conditions. To date, circulating miRNA expression has been studied...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-1302-9

    authors: Lázaro J,Clavería P,Cabrejas C,Fernando J,Daga B,Ordoñez B,Segura S,Sanz-Rubio D,Marín JM

    更新日期:2020-02-04 00:00:00

  • Association of time-to-treatment with outcomes of Pneumocystis pneumonia with respiratory failure in HIV-negative patients.

    abstract:BACKGROUND:The prevalence of pneumocystis pneumonia (PCP) and associated hypoxic respiratory failure is increasing in human immunodeficiency virus (HIV)-negative patients. However, no prior studies have evaluated the effect of early anti-PCP treatment on clinical outcomes in HIV-negative patient with severe PCP. Theref...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-1188-6

    authors: Ko RE,Na SJ,Huh K,Suh GY,Jeon K

    更新日期:2019-09-26 00:00:00

  • Exchange protein directly activated by cAMP (Epac) protects against airway inflammation and airway remodeling in asthmatic mice.

    abstract:BACKGROUND:β2 receptor agonists induce airway smooth muscle relaxation by increasing intracellular cAMP production. PKA is the traditional downstream signaling pathway of cAMP. Exchange protein directly activated by cAMP (Epac) was identified as another important signaling molecule of cAMP recently. The role of Epac in...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-1260-2

    authors: Chen YF,Huang G,Wang YM,Cheng M,Zhu FF,Zhong JN,Gao YD

    更新日期:2019-12-18 00:00:00

  • Macrophage derived chemokine (CCL22), thymus and activation-regulated chemokine (CCL17), and CCR4 in idiopathic pulmonary fibrosis.

    abstract:BACKGROUND:Idiopathic pulmonary fibrosis (IPF) is a chronically progressive interstitial lung disease of unknown etiology. Previously, we have demonstrated the selective upregulation of the macrophage-derived chemokine CCL22 and the thymus activation-regulated chemokine CCL17 among chemokines, in a rat model of radiati...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-10-80

    authors: Yogo Y,Fujishima S,Inoue T,Saito F,Shiomi T,Yamaguchi K,Ishizaka A

    更新日期:2009-08-29 00:00:00

  • Electronic cigarette vapour increases virulence and inflammatory potential of respiratory pathogens.

    abstract:INTRODUCTION:Bacteria have been extensively implicated in the development of smoking related diseases, such as COPD, by either direct infection or bacteria-mediated inflammation. In response to the health risks associated with tobacco exposure, the use of electronic cigarettes (e-cigs) has increased. This study compare...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-019-1206-8

    authors: Gilpin DF,McGown KA,Gallagher K,Bengoechea J,Dumigan A,Einarsson G,Elborn JS,Tunney MM

    更新日期:2019-12-18 00:00:00

  • Predictive factors of severe coronavirus disease 2019 in previously healthy young adults: a single-center, retrospective study.

    abstract:BACKGROUND:Several previously healthy young adults have developed Coronavirus Disease 2019 (COVID-19), and a few of them progressed to the severe stage. However, the factors are not yet determined. METHOD:We retrospectively analyzed 123 previously healthy young adults diagnosed with COVID-19 from January to March 2020...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-020-01412-1

    authors: Zhou C,Huang Z,Tan W,Li X,Yin W,Xiao Y,Tao Z,Geng S,Hu Y

    更新日期:2020-06-22 00:00:00

  • Acquired defects in CFTR-dependent β-adrenergic sweat secretion in chronic obstructive pulmonary disease.

    abstract:RATIONALE:Smoking-induced chronic obstructive pulmonary disease (COPD) is associated with acquired systemic cystic fibrosis transmembrane conductance regulator (CFTR) dysfunction. Recently, sweat evaporimetry has been shown to efficiently measure β-adrenergic sweat rate and specifically quantify CFTR function in the se...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/1465-9921-15-25

    authors: Courville CA,Tidwell S,Liu B,Accurso FJ,Dransfield MT,Rowe SM

    更新日期:2014-02-25 00:00:00

  • Surfactant proteins, SP-A and SP-D, in respiratory fungal infections: their role in the inflammatory response.

    abstract::Pulmonary surfactant is a complex fluid that comprises phospholipids and four proteins (SP-A, SP-B, SP-C, and SP-D) with different biological functions. SP-B, SP-C, and SP-D are essential for the lungs' surface tension function and for the organization, stability and metabolism of lung parenchyma. SP-A and SP-D, which...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/s12931-016-0385-9

    authors: Carreto-Binaghi LE,Aliouat el M,Taylor ML

    更新日期:2016-06-01 00:00:00

  • Weighing the evidence for pharmacological treatment interventions in mild COPD; a narrative perspective.

    abstract::There is increasing focus on understanding the nature of chronic obstructive pulmonary disease (COPD) during the earlier stages. Mild COPD (Global Initiative for Chronic Obstructive Lung Disease [GOLD] stage 1 or the now-withdrawn GOLD stage 0) represents an early stage of COPD that may progress to more severe disease...

    journal_title:Respiratory research

    pub_type: 杂志文章,评审

    doi:10.1186/s12931-019-1108-9

    authors: Singh D,D'Urzo AD,Donohue JF,Kerwin EM

    更新日期:2019-07-08 00:00:00

  • Role of ATP-sensitive potassium channels on hypoxic pulmonary vasoconstriction in endotoxemia.

    abstract:BACKGROUND:ATP-regulated potassium channels (KATP) regulate pulmonary vascular tone and are involved in hypoxic pulmonary vasoconstriction (HPV). In patients with inflammation like sepsis or ARDS, HPV is impaired, resulting in a ventilation-perfusion mismatch and hypoxia. Since increase of vascular KATP channel Kir6.1 ...

    journal_title:Respiratory research

    pub_type: 杂志文章

    doi:10.1186/s12931-018-0735-x

    authors: Turzo M,Vaith J,Lasitschka F,Weigand MA,Busch CJ

    更新日期:2018-02-13 00:00:00