The concentrations of extracellular nucleic acids and acid-soluble precursors of nucleic acids in blood of patients with different forms and severity of chronic obstructive pulmonary disease (COPD) were evaluated. The significant increase of the content of extracellular RNA and acid-soluble precursors of nucleic acids in plasma of patients with COPD was detected. The decrease of extracellular RNA in plasma of patients with COPD worsening was diagnosed. Extracellular DNA in plasma and red blood cells of patients didn’t change significantly. The article examines the mechanisms of extracellular nucleic acids increase in blood of COPD patients, studies the possible role of extracellular RNA in development of coagulation disorders in COPD patients. The further research of the role of extracellular nucleic acids and their precursors in COPD progression is require
