Asthma is a heterogeneous pulmonary disease characterized by airway hyperresponsiveness and chronic inflammation, and affects from 1% to 29% of the population in different countries. The pathogenesis of this disease is multifaceted; in addition to the crucial role of the immune system, its development involves environmental and genetic factors. Asthma is manifested by wheezing, shortness of breath, and chest tightness, and characteristic of this disease is that symptoms vary over time and in intensity. Studies have suggested that the special communication, lung-brain axis, has a potential role in the course of pulmonary diseases, including asthma. This term relates to the bidirectional relationship between the brain and the lung, which has communication comprising the central and peripheral nervous systems, the endocrine system, the immunological systems, and microbiota. These elements cooperate to create a complex system of bilateral interactions between the lung and the central nervous system. Our aim of this article was to summarize and organize knowledge about the role of the lung-brain axis during asthma exacerbation, a state which is defined as the worsening of a patient's symptoms and lung function parameters over a defined period.
Citation: Kamil Marszałek, Klaudia Dobrowolska, Natalia Krupińska. The role of the lung-brain axis in asthma exacerbations[J]. AIMS Allergy and Immunology, 2026, 10(2): 52-70. doi: 10.3934/Allergy.2026006
Asthma is a heterogeneous pulmonary disease characterized by airway hyperresponsiveness and chronic inflammation, and affects from 1% to 29% of the population in different countries. The pathogenesis of this disease is multifaceted; in addition to the crucial role of the immune system, its development involves environmental and genetic factors. Asthma is manifested by wheezing, shortness of breath, and chest tightness, and characteristic of this disease is that symptoms vary over time and in intensity. Studies have suggested that the special communication, lung-brain axis, has a potential role in the course of pulmonary diseases, including asthma. This term relates to the bidirectional relationship between the brain and the lung, which has communication comprising the central and peripheral nervous systems, the endocrine system, the immunological systems, and microbiota. These elements cooperate to create a complex system of bilateral interactions between the lung and the central nervous system. Our aim of this article was to summarize and organize knowledge about the role of the lung-brain axis during asthma exacerbation, a state which is defined as the worsening of a patient's symptoms and lung function parameters over a defined period.
Anterior cingulate cortex
Asthma control test
Asthma exacerbations
Adenosine triphosphate
Bronchoalveolar lavage fluid
Blood–brain barrier
Brain-derived neurotrophic factor
C-C motif chemokine ligand 11, eotaxin-1
Colony-forming unit
Calcitonin gene-related peptide
Cytomegalovirus
Central nervous system
Chronic rhinosinusitis with nasal polyps
Cytokine storm
Chemokine (C-X-C motif) ligand -1, -2, -8, -9, -10
Epinephrine
European Academy of Allergy and Clinical Immunology
Extracellular matrix protein 1
European Respiratory Society
Forced Expiratory Flow 25–75%
Forced Expiratory Volume in 1 second
Functional Residual Capacity
Gastroesophageal reflux disease
Global Initiative for Asthma
Hypoxic brain injury
Hypothalamic–pituitary–adrenal axis
Inhaled corticosteroids
Interferon
Immunoglobulin E
Interleukin-1α
Interleukin-1β
Interleukin-4
Interleukin-5
Interleukin-6
Interleukin-8
Interleukin-13
Interleukin-17
Interleukin-22
Interleukin-1 receptor type 1
Invasive mechanical ventilation
Lung–brain axis
Lipopolysaccharide
Major depressive disorder
Middle East respiratory syndrome coronavirus-1
Macrophage inflammatory protein-1 beta
Matrix metalloproteinase 9
Norepinephrine
Nerve growth factor
Non-invasive ventilation
Natural killer cells
N-methyl-D-aspartate
Nitric oxide
Nitric oxide synthetase
Notch receptor 1
Neuropeptide Y
Neurotrophin 3
Neurotrophin 4
Neurotrophins
Outer-membrane vesicles
Bronchopulmonary C-fibres (PCFs)
Programmed death-ligand 1
PDZ and LIM domain protein 4
Peak Expiratory Flow
Prostaglandin D2
Pulmonary neuroendocrine cells
Reactive oxygen species
Respiratory system
Sepsis-associated encephalopathy
Severe Acute Respiratory Syndrome coronavirus 1
Severe Acute Respiratory Syndrome coronavirus 2
Staphylococcal bacterial protein antigen
Substance P
Peripheral Capillary Oxygen Saturation
Regulatory T cells
Tumour necrosis factor alpha
Transient receptor potential vanilloid 1
ventilation-perfusion ratio
Vascular endothelial growth factor A
Vasoactive intestinal peptide
Vagus nerve
Vagus nerve stimulation
World Health Organization
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