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Hela Ben Nasr, Sarra Bchir, Amel Ben Anes, Asma Amri, Yosra Sakhana, Mohamed Benzarti, Abdelhamid Garrouch, Zouhair Tabka, Karim Chahed
OBJECTIVE: The goal of this study was to examine the role of G894T (rs1799983), -786T/C (rs3918161) and a 27 bp variable number of tandem repeats (VNTR) 4B/4A of NOS3 gene on the risk and severity of COPD. METHODS: The study included 194 controls and 138 COPD patients. NOS3 G894T, -786T/C and 4B/4A variants were determined by PCR analysis based on the banding pattern on gel electrophoresis. Pulmonary function was evaluated using body plethysmography. The levels of nitric oxide, peroxynitrite and lipid peroxides (T-BARS) were determined using spectrophotometric methods...
May 16, 2017: Cytokine
Matthias C Kugler, Cynthia A Loomis, Zhicheng Zhao, Jennifer C Cushman, Li Liu, John S Munger
Sonic Hedgehog (Shh) signaling regulates mesenchymal proliferation and differentiation during embryonic lung development. In the adult lung, Shh signaling maintains mesenchymal quiescence and is dysregulated in diseases such as idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease. Our previous data implicated a role for Shh in postnatal lung development. Here, we report a detailed analysis of Shh signaling during murine postnatal lung development. We show that Shh pathway expression and activity during alveolarization (postnatal day [P] 0-P14) are distinct from those during maturation (P14-P24)...
September 2017: American Journal of Respiratory Cell and Molecular Biology
Tiago Maricoto, Sofia Madanelo, Luís Rodrigues, Gilberto Teixeira, Carla Valente, Lília Andrade, Alcina Saraiva
To assess the impact that educational interventions to improve inhaler techniques have on the clinical and functional control of asthma and COPD, we evaluated 44 participants before and after such an intervention. There was a significant decrease in the number of errors, and 20 patients (46%) significantly improved their technique regarding prior exhalation and breath hold. In the asthma group, there were significant improvements in the mean FEV1, FVC, and PEF (of 6.4%, 8.6%, and 8.3% respectively). Those improvements were accompanied by improvements in Control of Allergic Rhinitis and Asthma Test scores but not in Asthma Control Test scores...
November 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
Asma Yaghi, Myrna B Dolovich
Airway epithelium is the first line of defense against exposure of the airway and lung to various inflammatory stimuli. Ciliary beating of airway epithelial cells constitutes an important part of the mucociliary transport apparatus. To be effective in transporting secretions out of the lung, the mucociliary transport apparatus must exhibit a cohesive beating of all ciliated epithelial cells that line the upper and lower respiratory tract. Cilia function can be modulated by exposures to endogenous and exogenous factors and by the viscosity of the mucus lining the epithelium...
November 11, 2016: Cells
Cleriston Farias Queiroz, Antonio Carlos Moreira Lemos, Maria de Lourdes Santana Bastos, Margarida Célia Lima Costa Neves, Aquiles Assunção Camelier, Natália Barbosa Carvalho, Edgar Marcelino de Carvalho
Objective: To determine whether COPD severity correlates with sputum cell counts, atopy, and asthma. Methods: This was a cross-sectional study involving 37 patients with COPD and 22 healthy subjects with normal lung function (controls). Sputum cell counts were determined by microscopy after centrifugation of samples. Skin prick tests were performed, and serum cytokines were determined by ELISA. Results: Patients were stratified by bronchodilator response: a non-reversible airflow limitation (nonRAL) group comprised 24 patients showing no significant post-bronchodilator change in FEV1; and a partially reversible airflow limitation (partialRAL) group comprised 13 patients showing FEV1 reversibility (post-bronchodilator FEV1 increase ≥ 12%)...
July 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
Marilyn Urrutia-Pereira, Jennifer Avila, Dirceu Solé
OBJECTIVE: To present the Programa Infantil de Prevenção de Asma (PIPA, Program for the Prevention of Childhood Asthma) and the characteristics of the patients followed in this program. METHODS: Implemented in the city of Uruguaiana, Brazil, PIPA has as its target population children and adolescents (< 18 years of age) with asthma or suspected asthma. Patients either enroll in PIPA spontaneously or are referred by pediatricians or primary care physicians. In this retrospective study, we use a standardized protocol to assess PIPA patients...
January 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
Achraf Al Faraj, Asma Sultana Shaik, Sibtain Afzal, Baraa Al Sayed, Rabih Halwani
PURPOSE: Targeting and noninvasive imaging of a specific alveolar macrophage subpopulation in the lung has revealed the importance for early and better diagnosis and therapy of chronic obstructive pulmonary disease (COPD). In this study, the in vivo effect of pulmonary administration of iron oxide nanoparticles on the polarization profile of macrophages was assessed, and a noninvasive free-breathing magnetic resonance imaging (MRI) protocol coupled with the use of biocompatible antibody-conjugated superparamagnetic iron oxide (SPIO) nanoparticles was developed to enable specific targeting and imaging of a particular macrophage subpopulation in lipopolysaccharide-induced COPD mice model...
2014: International Journal of Nanomedicine
Achraf Al Faraj, Asma Sultana Shaik, Mary Angeline Pureza, Mohammad Alnafea, Rabih Halwani
Noninvasive imaging of macrophages activity has raised increasing interest for diagnosis of chronic obstructive respiratory diseases (COPD), which make them attractive vehicles to deliver contrast agents for diagnostic or drugs for therapeutic purposes. This study was designed to monitor and evaluate the migration of differently polarized M1 and M2 iron labeled macrophage subsets to the lung of a LPS-induced COPD animal model and to assess their polarization state once they have reached the inflammatory sites in the lung after intravenous injection...
2014: PloS One
Jose Gregorio Soto-Campos, Vicente Plaza, Joan B Soriano, Carlos Cabrera-López, Carlos Almonacid-Sánchez, Rosa Vazquez-Oliva, Jose Serrano, Aitor Ballaz-Quincoces, Alicia Padilla-Galo, Vanessa Santos
BACKGROUND: There is limited information on the causes of death in asthma patients.To determine the causes of death in hospitalized asthmatic patients and to compare with those observed in COPD patients and non-respiratory individuals, with a particular interest in associations with previous cardiovascular disease. METHODS: Retrospective case-control study which analyzed the deaths of all hospitalized patients admitted for any reason during January, April, July and October of 2008 in 13 Spanish centers...
2013: BMC Pulmonary Medicine
Asma Althani, Sumbul Bushra, Noor Shaath, Hisham A Sattar
Respiratory viruses in patients with chronic obstructive pulmonary disease (COPD) or asthma have not been characterised in Qatar. This study aimed to identify the most common viral strains responsible for respiratory tract infections in asthma/COPD patients (without exacerbations) in Qatar during the winter season (2008-2009). Nasal swabs from patients with asthma/COPD and respiratory symptoms were evaluated for 15 common viruses. 200 adult patients (190 with asthma and 10 with COPD) were enrolled. Viral infections were present in 36 out of 200 patients (18 %)...
May 2013: Archives of Virology
Berna D L Broekhuizen, Alfred P E Sachs, Theo J Verheij, Kristel J M Janssen, Gerard Asma, Jan-Willem J Lammers, René Hage, Ernst Lammers, Arno W Hoes, Karel G Moons
BACKGROUND: Guidelines recommend detection of early chronic obstructive pulmonary disease (COPD), but evidence on the diagnostic work-up for COPD only concerns advanced and established COPD. AIM: To quantify the accuracy of symptoms and signs for early COPD, and the added value of C-reactive protein (CRP), in primary care patients presenting with cough. DESIGN AND SETTING: Cross-sectional diagnostic study of 73 primary care practices in the Netherlands...
September 2012: British Journal of General Practice: the Journal of the Royal College of General Practitioners
Asma Yaghi, Aisha Zaman, Gerard Cox, Myrna B Dolovich
UNLABELLED: COPD is characterized by increased cough, mucus production, and airway inflammation. Beating epithelial cell cilia contribute to mucociliary clearance with ciliary beat frequency (CBF) an important measure of cilia function. However, whether CBF varies with COPD severity is unknown. AIMS: 1) to compare nasal cilia samples and their CBF from healthy non-smokers (Control), COPD and At Risk (cough and sputum production) subjects. 2) to determine the effect of pharmacologic agents that modulate mediators implicated in the pathogenesis of COPD on nasal CBF...
August 2012: Respiratory Medicine
Basit Saleem Qazi, Kai Tang, Asma Qazi
Interleukin-8 has long been recognized to have anti-inflammatory activity, which has been established in various models of infection, inflammation, and cancer. Several cell types express the receptor for the cytokine IL-8 and upon its recognition produce molecules that are active both locally and systemically. Many different types of cells, in particular monocytes, neutrophils, epithelial, fibroblast, endothelial, mesothelial, and tumor cells, secrete IL-8. Increased expression of IL-8 and/or its receptors has been characterized in many chronic inflammatory conditions, including psoriasis, ARDS, COPD, and RA as well as many cancers, and its upregulation often correlates with disease activity...
2011: International Journal of Inflammation
Ramzi Lakhdar, Sabri Denden, Asma Kassab, Nadia Leban, Jalel Knani, Gérard Lefranc, Abelhadi Miled, Jemni Ben Chibani, Amel Haj Khelil
Chronic obstructive pulmonary disease (COPD) is characterized by systemic and local chronic inflammation and oxidative stress. The sources of the increased oxidative stress in COPD patients derive from the increased burden of inhaled oxidants such as cigarette smoke and other forms of particulate or gaseous air pollution and from the increase in reactive oxygen species (ROS) generated by several inflammatory, immune, and structural airways cells. There is increasing evidence that genetic factors may also contribute to the pathogenesis if COPD, particularly antioxidant genes, which may confer a susceptibility to environmental insults such as cigarette smoke and thereafter development of COPD...
August 2011: Experimental Lung Research
Luis Alejandro Pérez De Llano, Francisco Carballada González, Olalla Castro Añón, Marlies Pizarro Perea, Manuel Vázquez Caruncho, Adolfo Baloira Villar
INTRODUCTION: The coexistence of potentially aggravating processes is common in asthmatics, particularly in patients with difficult control. The primary aim of this study is to ascertain whether comorbidity id more common in uncontrolled patients. As a secondary aim, we propose to evaluate the correlation between the asthma control test (ACT) and the fraction of exhaled nitric oxide (FENO). PATIENT AND METHODS: A prospective, observational study comparing the function and clinical picture of two groups of asthmatics: controlled (ACT≥20) and uncontrolled (ACT<20)...
October 2010: Archivos de Bronconeumología
Walid Ben-Selma, Imen Ben-Kahla, Manel Marzouk, Asma Ferjeni, Samira Ghezal, Moncef Ben-Said, Jalel Boukadida
The usefulness of a new rapid diagnostic test (Patho-TB) using antibodies specific to mycobacterial antigens was evaluated for the rapid discrimination between pulmonary tuberculosis (TB) and non-TB pulmonary diseases on sputa. One hundred sputa collected from 79 active TB patients and from 21 patients with non-TB pulmonary diseases (asthma and chronic obstructive pulmonary disease) were enrolled into the study and tested for the presence of Mycobacterium tuberculosis by Ziehl-Neelsen smear, Patho-TB kit, and Löwenstein-Jensen culture...
November 2009: Diagnostic Microbiology and Infectious Disease
Nadia Aït-Khaled, Donald A Enarson, Salah Ottmani, Asma El Sony, Mai Eltigani, Ricardo Sepulveda
Respiratory disease has never received priority in relation to its impact on health. Estimated DALYs lost in 2002 were 12% globally (similar for industrialized and developing countries). Chronic airflow limitation (due mainly to asthma and COPD) alone affects more than 100 million persons in the world and the majority of them live in developing countries. International guidelines for management of asthma (GINA) and COPD (GOLD) have been adopted and their cost-effectiveness demonstrated in industrialized countries...
2007: International Journal of Chronic Obstructive Pulmonary Disease
E D Pereira, S M Farensin, A L Fernandes
BACKGROUND: We wanted to determine the postoperative pulmonary complication after upper abdominal surgery in patients with pulmonary obstrutive syndrome. METHODS: We have studied 196 patients prospectively analyzed in preoperative period with spirometry and followed for observation of PPC. The patients were divided in four groups: COPD - those with chronic bronchitis or emphysema and VEF1/CVF< 70% (27 patients). ASMA - patients with obstruction of the airway in response to provoking stimuli (44 patients)...
January 2000: Revista da Associação Médica Brasileira
J J Guillén Pérez, F Guillén Grima, J Medrano Tortosa, L García-Marcos Alvarez, I Aguinaga Ontoso, J C Níguez Carbonell
BACKGROUND: The objective of this investigation is to determine the influence of air pollution (SO2 and particulate matter) on the existence of days of unusual attendance at emergency services for asthma and chronic obstructive pulmonary lung disease (COPD). A registry of attendances for these diseases and the daily mean concentrations of SO2 and particles were used (1989-1991). RESULTS: Unusual attendance days are establish by the fortnightly movable mean of the period that has that day as central one, under the hypothesis of a Poisson distribution with equal mean as the calculated one...
May 1995: Revista Española de Salud Pública
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