Chronic bronchitis is a very acute problem not only in Russia, but also around the world. Recently, the literature describes the clinical and functional features of the combined course of chronic bronchitis and abdominal obesity, which is a predictor of an unfavorable prognosis of this pathology.
OBJECTIVE
To study the association of abdominal obesity with markers of lower respiratory tract damage such as surfactant proteins A and D, α1-antitrypsin, Clara cell protein, pulmonary and activation- regulated chemokine in patients with chronic bronchitis.
MATERIAL AND METHODS
The study included 64 patients who underwent a screening examination at the NIITPM branch of the ICiG SB RAS. The patients were interviewed for the detection of respiratory diseases, spirometry, and anthropometry. All patients were divided into two groups: 1—37 patients with chronic bronchitis (CKD) in combination with abdominal obesity, 2—27 patients with chronic bronchitis without abdominal obesity. Serum levels of serum surfactant protein A, serum surfactant protein D, α1-antitrypsin, Clara cell protein (CC16), and pulmonary and activation- regulated chemokine (PARC) were determined by enzyme immunoassay.
RESULTS
The level of serum surfactant protein D is significantly lower in the group of patients with CKD in combination with abdominal obesity. The content of PARC was 43% higher in the group of patients with abdominal obesity. In women, the level of PARC was increased by 1.42 times, and in men by 1.35 times. There were no statistically significant differences between the groups for serum surfactant protein A, α1-antitrypsin, and CC16. When conducting the correlation analysis revealed a connection between the level of lung CC chemokine regulated activation with BMI (r=0.499; p<0.01) and waist circumference (r=0.493; p<0.01).
CONCLUSION
In patients with chronic bronchitis, the presence of abdominal obesity is associated with a significant change in the levels of markers of lower respiratory tract damage, such as pulmonary and activation- regulated chemokine and surfactant protein D.