In airway remodeling of asthma, sub-basement membrane changes include which process?

Prepare for your CVP and GI Pathology Exam. Study using flashcards and multiple choice questions with hints and explanations to excel in your test.

Airway remodeling in asthma centers on subepithelial fibrosis beneath the basement membrane. Chronic inflammation drives fibroblasts and myofibroblasts to lay down excess extracellular matrix, especially collagen, under the basement membrane. This fibrotic deposition thickens the lamina reticularis and stiffens the airway wall, contributing to fixed airflow limitation. Edema represents acute fluid leakage, not a long-term structural remodeling change, and necrosis is tissue death, not a remodeling process. Thickening describes the outcome, but the underlying process causing that change is fibrosis, making it the best description of sub-basement membrane alterations.