RT Journal Article SR Electronic T1 Glutathione level in community-acquired pneumonia patients JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP PA988 DO 10.1183/1393003.congress-2017.PA988 VO 50 IS suppl 61 A1 Voskresenska, Natalja A1 Voicehovska, Julija A1 Babikovs, Sergejs A1 Voicehovskis, Vladimirs A1 Lejnieks, Aivars A1 Skesters, Andrejs A1 Silova, Alise YR 2017 UL http://erj.ersjournals.com/content/50/suppl_61/PA988.abstract AB Glutathione, in its thiol-reduced form (GSH), is the most abundant antioxidant in the airway epithelial lining fluid. It acts as a vital intra- and extracellular antioxidant protecting oxidative/nitrosative stress, interceding the pro-inflammatory processes in the lungs.Aim: Relationship between pneumonia severity and GSH level have been studied.Methods: A case-conrol study took place at P. Stradins Clinical University hospital, Riga, Latvia. Community-acquired pneumonia (CAP) patients with no underlying chronic heart failure (n=32), both males and females of average age 69,0+7,2 and healthy control patients matched for age (n=20) were recruited. CURB 65 (confusion, uremia, respiratory rate, BP, age ≥ 65 years) score was used for CAP severity assessment. The level of plasma GSH was determined. CAP clinical pattern was followed up for 3 weeks.Results: Being compared to control group, GSH level was reduced in CAP patients (mean GSH was 1.12+ 0,22 mmol/L versus 1.60+0,16 mmol/L accordingly). There was no correlation between GSH level and CAP severity by CURB65. However, in 8 patients respiratory failure (RF) has developed. All the patients, in whom RF has developed, demonstrated GSH level below 1,1 mmol/L on admission.Conclusions: A low concentration of plasma GSH indicating low antioxidant capacity could act as a marker for inflammation-related OS in CAP patients for its management and/or risk of complications stratification.