Abstract
Surfactant protein D (SP-D) is an important component of pulmonary innate immunity. It is mainly produced by type 2 alveolar and bronchial epithelial cells, but is also found in extra pulmonary tissues and blood. It acts as a primary host defense against inhaled microorganisms. It also enhances adaptive immunity by activating T cells. SP-D deficiency can lead to upper and lower respiratory tract infections.
Obesity has reached global epidemic proportions in both adults and children and is associated with numerous co-morbidities and insulin resistance. Obesity & type 2 diabetes are highly associated with recurrent pulmonary & extra pulmonary infections.
The primary objective of this study was to determine the association of serum surfactant protein D levels with obesity and type 2 diabetes mellitus.