Study summary · research use only
[ANTIINFLAMMATORY AND REGENERATIVE EFFECT OF PEPTIDE THERAPY IN THE MODEL OF OBSTRUCTIVE LUNG PATHOLOGY]
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
In this rat study, the effect of the tetrapeptide bronchogen on bronchial epithelium structure/function and lung inflammation was examined in a model of chronic obstructive pulmonary disease (COPD) created by 60-day intermittent exposure to nitrogen dioxide. The authors measured cell composition and the cytokine-enzyme profile of bronchoalveolar lavage fluid (BALF), along with levels of secretory immunoglobulin A and surfactant protein B in BALF. Following the course of peptide treatment, decreased neutrophilic inflammation activity was observed, with normalization of cellular composition and the profile of pro-inflammatory cytokines and enzymes in the bronchoalveolar space. The bronchial epithelium structure, disturbed during formation of the COPD model, was reported as restored, accompanied by restoration of its functional activity as shown by an increase in secretory immunoglobulin A and surfactant protein B.
Abstract
The effect of the tetrapeptide bronchogen on the structural and functional state of the bronchial epithelium and inflammatory activity in the lungs was studied in the chronic obstructive pulmonary disease (COPD) model, created in rats by a 60-day intermittent exposure to nitrogen dioxide. The cell composition and cytokine-enzyme profile of bronchoalveolar lavage fluid (BALF), the content of secretory immunoglobulin A and surfactant protein B in BALF were determined. Following the course of peptide treatment the decreased activity of neutrophilic inflammation with the normalization of cellular composition and profile of pro-inflammatory cytokines and enzymes in the bronchoalveolar space was observed. The structure of bronchial epithelium, disturbed during formation of COPD model, was restored and accompanied by restoration of its functional activity as evidenced by an increase of secretory immunoglobulin A (local immunity marker) and surfactant protein B, responsible for reducing the alveolar surface tension.
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