Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 13, Pages -Publisher
MDPI
DOI: 10.3390/ijms23137287
Keywords
children; molecular; inflammation; immunity; gut-lung axis; airways; pulmonary function tests
Funding
- German Research Foundation (DFG)
- Open Access Publication Fund of the University of Greifswald
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Pulmonary manifestation of inflammatory bowel disease in children is a rare condition with unclear pathogenesis. Different pathophysiological concepts have been proposed and case reports in children have been published. Most pediatric IBD patients with pulmonary manifestation are asymptomatic, but may show abnormalities in pulmonary function tests and breathing tests. Initial treatment is based on corticosteroids.
Pulmonary manifestation (PM) of inflammatory bowel disease (IBD) in children is a rare condition. The exact pathogenesis is still unclear, but several explanatory concepts were postulated and several case reports in children were published. We performed a systematic Medline search between April 1976 and April 2022. Different pathophysiological concepts were identified, including the shared embryological origin, miss-homing of intestinal based neutrophils and T lymphocytes, inflammatory triggering via certain molecules (tripeptide proline-glycine-proline, interleukin 25), genetic factors and alterations in the microbiome. Most pediatric IBD patients with PM are asymptomatic, but can show alterations in pulmonary function tests and breathing tests. In children, the pulmonary parenchyma is more affected than the airways, leading histologically mainly to organizing pneumonia. Medication-associated lung injury has to be considered in pulmonary symptomatic pediatric IBD patients treated with certain agents (i.e., mesalamine, sulfasalazine or infliximab). Furthermore, the risk of pulmonary embolism is generally increased in pediatric IBD patients. The initial treatment of PM is based on corticosteroids, either inhaled for the larger airways or systemic for smaller airways and parenchymal disease. In summary, this review article summarizes the current knowledge about PM in pediatric IBD patients, focusing on pathophysiological and clinical aspects.
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