SERUM AND BAL YKL-40 LEVELS IN DIFFERENT INFLAMMATORY LUNG DISEASES: AN UPDATE

Area of Science:

• Biochemistry
• Immunology
• Pulmonology

Background:

• YKL-40 (chitinase 3-like-1) is a glycosyl hydrolase family 18 protein.
• It functions as a pro-inflammatory cytokine involved in tissue remodeling and fibrosis.
• Its specific role in pulmonary diseases remains largely undetermined.

Purpose of the Study:

• To review the literature on YKL-40's function in lung diseases.
• To assess YKL-40 as a potential biomarker for pulmonary inflammation and fibrosis.
• To consolidate current understanding of YKL-40 in respiratory pathology.

Main Methods:

• Comprehensive literature search of PubMed database.
• Keywords: YKL-40, chitinase 3-like-1, pulmonary diseases, inflammation, fibrosis.
• Inclusion criteria: English articles published since 1997, search conducted in October 2014.

Main Results:

• YKL-40 is implicated in pathological tissue remodeling and fibrosis in various diseases.
• Evidence suggests YKL-40's involvement in inflammatory processes.
• The precise pathophysiological significance of YKL-40 in lung diseases requires further elucidation.

Conclusions:

• YKL-40 shows potential as a biomarker for diagnosing and monitoring lung diseases.
• Its role in inflammation and fibrosis in pulmonary conditions warrants continued investigation.
• Further studies are essential to validate YKL-40's utility in clinical practice for respiratory diseases.