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Severe Asthma, An Issue of Immunology and Allergy Clinics of North America, E-Book

Severe Asthma, An Issue of Immunology and Allergy Clinics of North America, E-Book

Rohit K. Katial

(2016)

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Book Details

Abstract

This issue of Immunology and Allergy Clinics of North America, guest edited by Dr. Rohit Katial, is devoted to Severe Asthma. Articles in this issue include: Epidemiology and Pulmonary Physiology of Severe Asthma; Linkage and Genetic Associations in Severe Asthma; Asthma COPD Overlap Syndrome (ACOS); Biomarkers in Severe Asthma; Imaging in Severe Asthma; Eosinophilic Phenotype; Neutrophilic and Pauci-immune Phenotypes; Role of Sleep Apnea and Gastroesophageal Reflux Disease in Severe Asthma; Role of Small Airways in Severe Asthma; Chronic Infection and Severe Asthma; Chronic Rhinosinusitis and Aspirin Associated Respiratory Disease; Psychosocial Factors in Severe Asthma; Traditional Therapies for Severe Asthma; and Emerging Biologics for Severe Asthma.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Severe Asthma i
Copyright ii
Contributors iii
CONSULTING EDITOR iii
EDITOR iii
AUTHORS iii
Contents vii
Foreword: Severe Asthma - Chipping Away at the Unmet Need vii
Preface: Severe Asthma - A Heterogeneous Disease vii
Epidemiology and Pulmonary Physiology of Severe Asthma vii
Linkage and Genetic Association in Severe Asthma vii
Psychosocial Factors in Severe Pediatric Asthma vii
Role of Sleep Apnea and Gastroesophageal Reflux in Severe Asthma viii
Role of Small Airways in Asthma viii
Chronic Infection and Severe Asthma viii
Chronic Rhinosinusitis and Aspirin-Exacerbated Respiratory Disease viii
Asthma–Chronic Obstructive Pulmonary Disease Overlap Syndrome: Nothing New Under the Sun viii
Imaging of Asthma ix
Biomarkers in Severe Asthma ix
Eosinophilic Endotype of Asthma ix
Neutrophilic and Pauci-immune Phenotypes in Severe Asthma ix
Traditional Therapies for Severe Asthma x
Emerging Biologics in Severe Asthma x
IMMUNOLOGYAND ALLERGY\rCLINICS OF NORTH AMERICA xi
FORTHCOMING ISSUES xi
November 2016 xi
February 2017 xi
May 2017 xi
RECENT ISSUES xi
May 2016 xi
February 2016 xi
November 2015 xi
Foreword:\rSevere Asthma: Chipping Away at the Unmet Need xiii
Preface:\rSevere Asthma: A Heterogeneous Disease xv
Epidemiology and Pulmonary Physiology of Severe Asthma 425
Key points 425
INTRODUCTION 425
DEMOGRAPHICS OF SEVERE ASTHMA 425
COHORT CHARACTERISTICS OF SEVERE ASTHMA 426
FINANCIAL IMPACT 428
DISEASE HETEROGENEITY OF SEVERE ASTHMA 428
PULMONARY PHYSIOLOGY OF SEVERE ASTHMA 429
AIRFLOW 430
AIRWAY RESISTANCE 431
LOSS OF ELASTIC RECOIL 431
GAS TRAPPING 432
VENTILATION HETEROGENEITY 432
AIRWAY HYPERRESPONSIVENESS AND PERCEPTION OF DYSPNEA 433
SUMMARY 434
REFERENCES 434
Linkage and Genetic Association in Severe Asthma 439
Key points 439
INTRODUCTION 439
GENETIC VARIANTS ASSOCIATED WITH SEVERE ASTHMA 440
17q21 Region 440
Interleukin-33/IL1RL1 441
Tumor Growth Factor-β 442
CHI3L1 442
OTHER POTENTIAL VARIANTS 443
Current Controversies/Limitations 443
FUTURE CONSIDERATIONS/SUMMARY 445
REFERENCES 445
Psychosocial Factors in Severe Pediatric Asthma 449
Key points 449
RELATIONSHIP BETWEEN ASTHMA AND BEHAVIORAL DISTURBANCE 449
Epidemiological Associations 449
Internalizing symptoms 450
Externalizing symptoms 451
Psychosocial Risk Factors for Poor Outcomes 451
Child psychopathology 451
Caregiver functioning 451
Family functioning 452
Life stress 453
BEHAVIORAL INTERVENTIONS FOR CHILDREN WITH SEVERE ASTHMA AND THEIR FAMILIES 453
Patient and Family Education 453
Cognitive-Behavioral Interventions 454
FUTURE CONSIDERATIONS 455
REFERENCES 456
Role of Sleep Apnea and Gastroesophageal Reflux in Severe Asthma 461
Key points 461
INTRODUCTION 461
IS THERE A LINK BETWEEN ASTHMA AND GASTROESOPHAGEAL REFLUX? 462
DOES GASTROESOPHAGEAL REFLUX IMPACT ASTHMA CONTROL OR DOES ASTHMA CONTRIBUTE TO GASTROESOPHAGEAL REFLUX? 462
DOES TREATMENT OF GASTROESOPHAGEAL REFLUX WITH PROTON PUMP INHIBITORS HELP CONTROL ASTHMA? 463
UNRESOLVED ISSUES SURROUNDING THE RELATIONSHIP BETWEEN GASTROESOPHAGEAL REFLUX AND ASTHMA 463
WHAT IS THE RELATIONSHIP BETWEEN OBSTRUCTIVE SLEEP APNEA SYNDROME AND ASTHMA? 465
PATHOPHYSIOLOGY OF THE INTERRELATIONSHIP BETWEEN ASTHMA AND OBSTRUCTIVE SLEEP APNEA SYNDROME 466
DOES TREATMENT WITH CONTINUOUS POSITIVE AIRWAY PRESSURE WITH OR WITHOUT OBSTRUCTIVE SLEEP APNEA SYNDROME IMPACT ASTHMA CONTROL? 467
REFERENCES 468
Role of Small Airways in Asthma 473
Key points 473
INTRODUCTION 473
INFLAMMATION 474
PHYSIOLOGY 475
OTHER MODALITIES 477
THERAPEUTICS 478
SUMMARY 479
REFERENCES 480
Chronic Infection and Severe Asthma 483
Key points 483
INTRODUCTION 483
MYCOPLASMA PNEUMONIAE 483
Mycoplasma pneumoniae Pathogenicity 484
Experimental and Mechanistic Models of Mycoplasma pneumoniae and Asthma 484
Mycoplasma pneumoniae and Asthma in Humans 485
Onset of wheeze or asthma 485
Chronic asthma, exacerbations, and severity 485
CHLAMYDOPHILA PNEUMONIAE 488
Chlamydophila pneumoniae Pathogenicity 488
Experimental and Mechanistic Models of Chlamydophila pneumoniae and Asthma 488
Chlamydophila pneumoniae and Asthma in Humans 489
Onset of wheeze or asthma 489
Chronic asthma, exacerbations, and severity 489
MACROLIDES FOR ASTHMA 489
Use of Macrolides in Asthma, Irrespective of Atypical Infection 489
Macrolides as Steroid-Sparing Agents for Asthma 489
Use of Macrolides in Asthma, with Respect to Atypical Infection 492
MICROBIOME OF THE ASTHMATIC LUNG 492
SUMMARY 494
REFERENCES 494
Chronic Rhinosinusitis and Aspirin-Exacerbated Respiratory Disease 503
Key points 503
INTRODUCTION 503
DEFINITIONS 503
UNIFIED AIRWAY HYPOTHESIS 504
PATHOPHYSIOLOGY 505
ALLERGIC FUNGAL RHINOSINUSITIS 505
BACTERIA IN CHRONIC RHINOSINUSITIS 505
ATOPY 506
ASPIRIN-EXACERBATED RESPIRATORY DISEASE 506
EVALUATION AND TREATMENT 507
Imaging 507
Corticosteroids 508
Antibiotics 508
Leukotriene Modifiers 508
Surgery 508
BIOLOGIC THERAPY 509
SUMMARY 509
REFERENCES 509
Asthma–Chronic Obstructive Pulmonary Disease Overlap Syndrome 515
Key points 515
INTRODUCTION 515
PREVALENCE AND EPIDEMIOLOGY OF ASTHMA–CHRONIC OBSTRUCTIVE PULMONARY DISEASE OVERLAP SYNDROME 516
CONSENSUS STATEMENTS 518
Spanish Statement 518
Combined Global Initiative for Asthma/Global Initiative of Chronic Obstructive Lung Disease Statement 519
PROPOSED PATHWAYS TO ASTHMA CHRONIC OBSTRUCTIVE PULMONARY DISEASE OVERLAP SYNDROME, PRESENTED AS 4 PHENOTYPES 519
Smokers with Eosinophilic Inflammation 519
Resistant Asthmatic 522
Elderly Asthmatic with Irreversible Airflow Obstruction 522
Childhood Asthmatic Who Smokes and Develops Chronic Obstructive Pulmonary Disease 523
OTHER CONSIDERATIONS 524
Genetic Overlap 524
Therapeutic Options and Targets 524
FUTURE CONSIDERATIONS/SUMMARY 525
REFERENCES 525
Imaging of Asthma 529
Key points 529
INTRODUCTION 529
CHEST RADIOGRAPHY 529
COMPUTED TOMOGRAPHY 531
ASSOCIATED CONDITIONS 534
COMPLICATIONS 535
MIMICS 538
SUMMARY 542
REFERENCES 542
Biomarkers in Severe Asthma 547
Key points 547
INTRODUCTION 547
BIOMARKERS OF TYPE 2 INFLAMMATION 548
Sputum Eosinophils 548
Fractional Exhaled Nitric Oxide Concentration 548
Blood Eosinophils 549
Periostin 549
OTHER BIOMARKERS OF TYPE 2 INFLAMMATION 549
BIOMARKERS UNRELATED TO TYPE 2 INFLAMMATION 549
Sputum Neutrophil 549
Interleukin-17 550
Other Non–Type 2 Inflammatory Biomarkers 550
Special Considerations in Children 550
UTILITY IN SEVERE ASTHMA 550
Diagnosis 550
Prognosis 550
Establishing a Baseline and Monitoring Control 551
Endotyping 551
Guiding Choice of Therapy in Severe Asthma 551
Guide Dosing of Inhaled Corticosteroid 552
Assess Adherence 552
SUMMARY 552
REFERENCES 553
Eosinophilic Endotype of Asthma 559
Key points 559
DEFINITION OF EOSINOPHILIC ASTHMA 560
DIAGNOSIS OF EOSINOPHILIC ASTHMA 560
Bronchial Mucosal and BAL Eosinophils 560
Sputum Eosinophil 561
Blood Eosinophil Counts 561
Other Methods to Identify the Eosinophilic Phenotype 561
Periostin 562
Metabolomics 562
Gene Expression Biomarkers 562
PREVALENCE, STABILITY, AND NATURAL HISTORY OF THE EOSINOPHILIC ASTHMA PHENOTYPE 563
MECHANISMS THAT MAY CONTRIBUTE TO A PERSISTENT EOSINOPHILIC ENDOTYPE 564
The Clinical Relevance of Identifying an Eosinophilic Endotype 565
SUMMARY 565
REFERENCES 566
Neutrophilic and Pauci-immune Phenotypes in Severe Asthma 569
Key points 569
INTRODUCTION 569
PATHOPHYSIOLOGY 570
Neutrophilic Asthma 570
Pauci-immune Asthma 571
Therapeutic Approaches 573
Current Controversies 575
FUTURE CONSIDERATIONS/SUMMARY 575
REFERENCES 576
Traditional Therapies for Severe Asthma 581
Key points 581
INTRODUCTION 581
COMBINATION INHALED CORTICOSTEROID AND LONG-ACTING β-AGONIST THERAPY 583
LONG-ACTING ANTICHOLINERGIC/MUSCARINIC ANTAGONIST THERAPY 588
OMALIZUMAB 588
SYSTEMIC CORTICOSTEROIDS 589
ADDITIONAL ADD-ON THERAPIES 590
Theophylline 591
Antileukotrienes 591
Allergen Immunotherapy 594
Macrolide Antibiotics 594
Bronchial Thermoplasty 594
Small-Particle Inhaled Corticosteroids 597
SPECIAL POPULATIONS 597
Pediatrics 597
Pregnancy and Lactation 598
Obesity 600
Specific Racial and Ethnic Groups 600
SUMMARY AND FUTURE CONSIDERATIONS 600
REFERENCES 601
Emerging Biologics in Severe Asthma 609
Key points 609
INTRODUCTION 609
Definition of severe asthma for patients 6 years old and older 610
T-HELPER 2 CYTOKINES AS POTENTIAL TREATMENT TARGETS 611
T-HELPER 2 CYTOKINE BLOCKERS 612
Anti-Interleukin-5 or Anti-Interleukin-5R 612
Alternative Anti-Interleukin-5 Treatments 615
Anti-Interleukin-13 617
Interleukin-4 Receptor-αBlockers 618
PROSPECTS FOR T-HELPER 2 LOW DISEASE 618
AN APPROACH TO ASSESSMENT OF PATIENTS WITH SEVERE ASTHMA POTENTIALLY SUITABLE FOR BIOLOGICAL TREATMENT 619
Diagnosis 619
THE IDENTIFICATION OF THE PATTERN OF AIRWAY INFLAMMATION 620
SUMMARY 620
REFERENCES 621