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https://www.readbyqxmd.com/read/28624884/age-at-menarche-and-lung-function-a-mendelian-randomization-study
#1
Dipender Gill, Nuala A Sheehan, Matthias Wielscher, Nick Shrine, Andre F S Amaral, John R Thompson, Raquel Granell, Bénédicte Leynaert, Francisco Gómez Real, Ian P Hall, Martin D Tobin, Juha Auvinen, Susan M Ring, Marjo-Riitta Jarvelin, Louise V Wain, John Henderson, Deborah Jarvis, Cosetta Minelli
A trend towards earlier menarche in women has been associated with childhood factors (e.g. obesity) and hypothesised environmental exposures (e.g. endocrine disruptors present in household products). Observational evidence has shown detrimental effects of early menarche on various health outcomes including adult lung function, but these might represent spurious associations due to confounding. To address this we used Mendelian randomization where genetic variants are used as proxies for age at menarche, since genetic associations are not affected by classical confounding...
June 17, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28624607/obese-asthmatics-have-decreased-surfactant-protein-a-levels-mechanisms-and-implications
#2
Njira Lugogo, Dave Francisco, Kenneth J Addison, Akarsh Manne, William Pederson, Jennifer L Ingram, Cynthia L Green, Benjamin T Suratt, James J Lee, Mary E Sunday, Monica Kraft, Julie G Ledford
BACKGROUND: Eosinophils are prominent in some individuals with asthma and are elevated in the submucosa in a subgroup of obese asthmatics. Surfactant protein-A (SP-A) modulates host responses to infectious and environmental insults. OBJECTIVE: To determine if SP-A levels are altered in obese asthma patients compared to a control group and to determine the implications of these alterations in SP-A levels in asthma. METHODS: Bronchoalveolar lavage fluid from 23 lean, 12 overweight and 20 obese subjects were examined for SP-A...
June 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28574698/ozone-exposure-cardiopulmonary-health-and-obesity-a-substantive-review
#3
Patricia D Koman, Peter Mancuso
From 1999-2014, obesity prevalence increased among adults and youth. Obese individuals may be uniquely susceptible to the proinflammatory effects of ozone because obese humans and animals have been shown to experience a greater decline in lung function than normal-weight subjects. Obesity is independently associated with limitations in lung mechanics with increased ozone dose. However, few epidemiologic studies have examined the interaction between excess weight and ozone exposure among adults. Using PubMed keyword searches and reference lists, we reviewed epidemiologic evidence to identify potential response-modifying factors and determine if obese or overweight adults are at increased risk of ozone-related health effects...
June 15, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28571133/influence-of-central-obesity-assessed-by-conicity-index-on-lung-age-in-young-adults
#4
Usha Shenoy, Jagadamba
INTRODUCTION: Central obesity is an emerging public health problem in young adults which compromises lung mechanics. Conicity Index (CI) is a simple anthropometric measure to assess central adiposity. The concept of lung age relates to a person's current lung function at which his/her lung function would be considered abnormal in relation to the present actual age. AIM: To determine the effect of central obesity by CI on lung age in young adults. MATERIALS AND METHODS: A total of 319 young adults in the age group 18-25 years were recruited for this cross-sectional observational study...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28570148/an-official-american-thoracic-society-workshop-report-obesity-and-metabolism-an-emerging-frontier-in-lung-health-and-disease
#5
Benjamin T Suratt, Niki D J Ubags, Deepa Rastogi, Kelan G Tantisira, Benjamin J Marsland, Irina Petrache, Janice B Allen, Jason H T Bates, Fernando Holguin, Meredith C McCormack, Evangelos D Michelakis, Stephen M Black, Manu Jain, Ana L Mora, Viswanathan Natarajan, Yury I Miller, Michael B Fessler, Konstantin G Birukov, Ross S Summer, Stephanie A Shore, Anne E Dixon
The world is in the midst of an unprecedented epidemic of obesity. This epidemic has changed the presentation and etiology of common diseases. For example, steatohepatitis, directly attributable to obesity, is now the most common cause of cirrhosis in the United States. Type 2 diabetes is increasingly being diagnosed in children. Pulmonary researchers and clinicians are just beginning to appreciate the impact of obesity and altered metabolism on common pulmonary diseases. Obesity has recently been identified as a major risk factor for the development of asthma and for acute respiratory distress syndrome...
June 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28543872/pai-1-gain-of-function-genotype-factors-increasing-pai-1-levels-and-airway-obstruction-the-gala-ii-cohort
#6
Michael G Sherenian, Seong H Cho, Albert Levin, Jin-Young Min, Sam S Oh, Donglei Hu, Joshua Galanter, Saunak Sen, Scott Huntsman, Celeste Eng, Jose R Rodriguez-Santana, Denise Serebrisky, Pedro C Avila, Ravi Kalhan, Lewis J Smith, Luisa N Borrell, Max A Seibold, L Keoki Williams, Esteban G Burchard, Rajesh Kumar
BACKGROUND: PAI-1 gain of function variants promote airway fibrosis, and are associated with asthma and with worse lung function in subjects with asthma. OBJECTIVE: We sought to determine if the association of a gain-of-function polymorphism in Plasminogen Activator Inhibitor -1 (PAI-1) with airway obstruction is modified by asthma status, and whether any genotype effect persists after accounting for common exposures that increase PAI-1 level. METHODS: We studied 2070 Latino children (8-21y) with genotypic and pulmonary function data from the GALA II cohort...
May 24, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28530087/-the-association-between-obesity-and-chronic-obstructive-pulmonary-disease-copd
#7
Shahar Geva, Moria Yaakoby, Or Kalchiem-Dekel, Aya Talmor-Gozlan, Roi Westreich, Nimrod Maimon
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a preventable and treatable disease, with major respiratory and systemic expressions. Obesity is defined as a BMI>30 kg/ m2 and its prevalence has doubled in recent decades. The possible relationship of obesity to COPD, and its influence on respiratory pathophysiology, is considered a mystery. Studies show obesity to be a survival advantage among COPD patients, unlike in the general population, in which obesity correlates to decreased life expectancy...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28526439/-over-diagnosis-of-chronic-obstructive-pulmonary-disease-in-primary-care-prevalence-and-determining-factors
#8
R Golpe, M Díaz-Fernández, N Mengual-Macenlle, P Sanjuán-López, I Martín-Robles, E Cano-Jiménez
INTRODUCTION: COPD under-diagnosis is common in Primary Health Care medicine, due to the low use of spirometry, but there is less information about over-diagnosis of the disease in patients that have a clinical diagnosis of COPD. OBJECTIVE: The main objective of the study was to investigate the prevalence of COPD over-diagnosis in Primary Care medicine. Secondary objectives were to determine the factors associated with an incorrect clinical diagnosis of COPD and to analyse whether the pharmacological treatment is different for patients with correct or incorrect diagnosis...
May 17, 2017: Semergen
https://www.readbyqxmd.com/read/28497325/the-effect-of-pressure-controlled-inverse-ratio-ventilation-on-lung-protection-in-obese-patients-undergoing-gynecological-laparoscopic-surgery
#9
Lili Xu, Jianjun Shen, Min Yan
SPECIFIC AIM: To examine the effects of pressure-controlled inverse ratio ventilation (PCIRV) and volume-control ventilation (VCV) on arterial oxygenation, pulmonary function, hemodynamics, levels of surfactant protein A (SP-A), and tumor necrosis factor-α (TNF-α) in obese patients undergoing gynecological laparoscopic surgery. METHODS: Sixty patients, body mass index (BMI) ≥30 kg/m(2), scheduled for elective gynecological laparoscopic surgery were enrolled in the study...
May 11, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28489959/mood-disorders-in-adult-asthma-phenotypes
#10
Marina Labor, Slavica Labor, Iva Jurić, Vladimir Fijačko, Sanja Popović Grle, Davor Plavec
OBJECTIVE: Studies show high comorbidity of mood disorders in asthma. As asthma is a highly heterogeneous disease with different phenotypes it can be expected that there is a difference in this association with different asthma phenotypes. The aim of our cross-sectional study was to assess the association of specific asthma phenotypes with anxiety and/or depression and their impact on asthma control. METHODS: A cross-sectional study in 201 consecutive adult outpatients with asthma (≥18 years of age) was conducted...
May 10, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28482650/obesity-and-perioperative-noninvasive-ventilation-in-bariatric-surgery
#11
Michele Carron, Francesco Zarantonello, Giovanna Ieppariello, Carlo Ori
The incidence and prevalence of obesity continues to increase globally. Physicians will therefore provide care for an increasing number of obese patients in their clinical practice. Optimal management of these patients is required to minimize the risk of perioperative complications that increase morbidity and mortality. Obesity affects the respiratory function. It is generally associated with reduced lung volume with increased atelectasis, decreased lung and chest wall compliance, increased airway resistance, and moderate to severe hypoxemia...
June 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28482008/the-microcirculation-a-key-player-in-obesity-associated-cardiovascular-disease
#12
Oana Sorop, T Dylan Olver, Jens van de Wouw, Ilkka Heinonen, Richard W van Duin, Dirk J Duncker, Daphne Merkus
It is increasingly recognized that obesity is a risk factor for microvascular disease, i.e. results in structural and functional changes in the microvasculature. This review aims to describe how obesity impacts the microvasculature of visceral adipose tissue, skeletal muscle, heart, brain, kidneys and lungs. These changes involve endothelial dysfunction, which in turn impacts control of vascular tone, contributes to development of microvascular insulin resistance, alters secretion of paracrine factors like nitric oxide and endothelin, but also influences vascular structure and perivascular inflammation...
May 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28465382/pulmonary-function-and-respiratory-health-of-military-personnel-before-southwest-asia-deployment
#13
Andrew J Skabelund, Frederic A Rawlins, Edward T McCann, Joshua A Lospinoso, Lorraine Burroughs, Roger A Gallup, Michael J Morris
BACKGROUND: Significant concern exists regarding the respiratory health of military personnel deployed to Southwest Asia, given their exposures to numerous environmental hazards. Although the deployed military force is generally assumed to be fit, the pre-deployment respiratory health of these individuals is largely unknown. METHODS: Soldiers deploying to Southwest Asia were recruited from the pre-deployment processing center at Fort Hood, Texas. Participants completed a general and respiratory health questionnaire and performed baseline spirometry...
May 2, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28461292/defining-asthma-copd-overlap-syndrome-a-population-based-study
#14
Tobias N Bonten, Marise J Kasteleyn, Renee de Mutsert, Pieter S Hiemstra, Frits R Rosendaal, Niels H Chavannes, Annelies M Slats, Christian Taube
Asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) seems an important clinical phenotype, but multiple definitions have been proposed. This study's objectives were to assess the effect of different ACOS definitions on prevalence, patient characteristics and exacerbations.5675 individuals aged 45-65 years, with 846 asthma/COPD patients, were included in the Netherlands Epidemiology of Obesity study between 2008 and 2012, and followed-up for a median of 1.8 years. ACOS was defined by recent consensus criteria and five other definitions, based on registry, questionnaires and lung function...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28454590/protective-intraoperative-ventilation-with-higher-versus-lower-levels-of-positive-end-expiratory-pressure-in-obese-patients-probese-study-protocol-for-a-randomized-controlled-trial
#15
T Bluth, R Teichmann, T Kiss, I Bobek, J Canet, G Cinnella, L De Baerdemaeker, C Gregoretti, G Hedenstierna, S N Hemmes, M Hiesmayr, M W Hollmann, S Jaber, J G Laffey, M J Licker, K Markstaller, I Matot, G Müller, G H Mills, J P Mulier, C Putensen, R Rossaint, J Schmitt, M Senturk, A Serpa Neto, P Severgnini, J Sprung, M F Vidal Melo, H Wrigge, M J Schultz, P Pelosi, M Gama de Abreu
BACKGROUND: Postoperative pulmonary complications (PPCs) increase the morbidity and mortality of surgery in obese patients. High levels of positive end-expiratory pressure (PEEP) with lung recruitment maneuvers may improve intraoperative respiratory function, but they can also compromise hemodynamics, and the effects on PPCs are uncertain. We hypothesized that intraoperative mechanical ventilation using high PEEP with periodic recruitment maneuvers, as compared with low PEEP without recruitment maneuvers, prevents PPCs in obese patients...
April 28, 2017: Trials
https://www.readbyqxmd.com/read/28442632/effect-of-aerobic-exercise-training-on-ventilatory-efficiency-and-respiratory-drive-in-obese-subjects
#16
Mehdi Chlif, Anis Chaouachi, Said Ahmaidi
BACKGROUND: Obese patients show a decline in exercise capacity and diverse degrees of dyspnea in association with mechanical abnormalities, increased ventilatory requirements secondary to the increased metabolic load, and a greater work of breathing. Consequently, obese patients may be particularly predisposed to the development of respiratory muscle fatigue during exercise. The aim of this study was to assess inspiratory muscle performance during incremental exercise in 19 obese male subjects (body mass index 41 ± 6 kg/m(2)) after aerobic exercise training using the noninvasive, inspiratory muscle tension-time index (TT0...
April 25, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28439091/abdominal-adiposity-intensifies-the-negative-effects-of-ambient-air-pollution-on-lung-function-in-korean-men
#17
H-J Kim, J-H Park, J-Y Min, K-B Min, Y-S Seo, J M Yun, H Kwon, J-I Kim, B Cho
BACKGROUND: Some studies have provided the possibility that adipose tissue may mediate air pollution-induced lung dysfunction. Studies using quantified fat mass data are needed to understand the biological mechanisms between adipocyte and air pollution in lung function. We aimed to investigate whether abdominal adiposity measured by computed tomography (CT) modifies the effects of air pollution on lung function in Korean men. METHODS: A total of 1876 men who visited one of two health checkup centers were recruited for this study...
April 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28436715/controlled-invasive-mechanical-ventilation-strategies-in-obese-patients-undergoing-surgery
#18
Lígia de Albuquerque Maia, Pedro Leme Silva, Paolo Pelosi, Patricia Rieken Macedo Rocco
The obesity prevalence is increasing in surgical population. As the number of obese surgical patients increases, so does the demand for mechanical ventilation. Nevertheless, ventilatory strategies in this population are challenging, since obesity results in pathophysiological changes in respiratory function. Areas covered: We reviewed the impact of obesity on respiratory system and the effects of controlled invasive mechanical ventilation strategies in obese patients undergoing surgery. To date, there is no consensus regarding the optimal invasive mechanical ventilation strategy for obese surgical patients, and no evidence that possible intraoperative beneficial effects on oxygenation and mechanics translate into better postoperative pulmonary function or improved outcomes...
April 28, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28432861/spirometry-and-volumetric-capnography-in-lung-function-assessment-of-obese-and-normal-weight-individuals-without-asthma
#19
Mariana S Ferreira, Roberto T Mendes, Fernando A L Marson, Mariana P Zambon, Maria A R G M Antonio, Ilma A Paschoal, Adyléia A D C Toro, Silvana D Severino, Maria A G O Ribeiro, José D Ribeiro
OBJECTIVE: To analyze and compare lung function of obese and healthy, normal-weight children and adolescents, without asthma, through spirometry and volumetric capnography. METHODS: Cross-sectional study including 77 subjects (38 obese) aged 5-17 years. All subjects underwent spirometry and volumetric capnography. The evaluations were repeated in obese subjects after the use of a bronchodilator. RESULTS: At the spirometry assessment, obese individuals, when compared with the control group, showed lower values of forced expiratory volume in the first second by forced vital capacity (FEV1/FVC) and expiratory flows at 75% and between 25 and 75% of the FVC (p<0...
April 19, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28424066/short-term-exposure-to-pm2-5-and-vanadium-and-changes-in-asthma-gene-dna-methylation-and-lung-function-decrements-among-urban-children
#20
Kyung Hwa Jung, David Torrone, Stephanie Lovinsky-Desir, Matthew Perzanowski, Joshua Bautista, Jacqueline R Jezioro, Lori Hoepner, Jamie Ross, Frederica P Perera, Steven N Chillrud, Rachel L Miller
BACKGROUND: Both short and long-term exposure to traffic-related air pollutants have been associated with asthma and reduced lung function. We hypothesized that short-term indoor exposure to fine particulate matter <2.5 μm (PM2.5) and vanadium (V) would be associated with altered buccal cell DNA methylation of targeted asthma genes and decreased lung function among urban children in a nested subcohort of African American and Dominican children. METHODS: Six day integrated levels of air pollutants were measured from children's homes (age 9-14; n = 163), repeated 6 months later (n = 98)...
April 19, 2017: Respiratory Research
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