Sputum-to-serum hydrogen sulphide ratio as a novel biomarker of predicting future risks of asthma exacerbation

Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology
Y SuzukiM Munakata

Abstract

Increased level of hydrogen sulphide (H2 S) in sputum is reported to be a new biomarker of neutrophilic airway inflammation in chronic airway disorders. However, the relationship between H2 S and disease activity remains unclear. We investigated whether H2 S levels could vary during different conditions in asthma. H2 S levels in sputum and serum were measured using a sulphide-sensitive electrode in 47 stable asthmatic subjects (S-BA), 21 uncontrolled asthmatic subjects (UC-BA), 26 asthmatic subjects with acute exacerbation (AE-BA) and 15 healthy subjects. Of these, H2 S levels during stable, as well as exacerbation states, were obtained in 13 asthmatic subjects. Sputum H2 S levels were significantly higher in the AE-BA subjects compared to the UC-BA and healthy subjects (P < .05). However, serum H2 S levels in the AE-BA subjects were lower than in the S-BA subjects (P < .001) and similar to those in healthy subjects. Thus, the sputum-to-serum ratio of H2 S (H2 S ratio) in the AE-BA subjects was significantly higher than in the S-BA, UC-BA and healthy subjects (P < .05). Among all subjects, sputum H2 S levels showed a trend to decrease with FEV1 %predicted and significantly positive correlations with sputum neutrophils (%), sput...Continue Reading

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Citations

Aug 31, 2018·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·G Roberts
Dec 14, 2019·Clinical and Experimental Allergy : Journal of the British Society for Allergy and Clinical Immunology·Graham RobertsJ A Woodfolk
Nov 21, 2020·Allergology International : Official Journal of the Japanese Society of Allergology·Yasuhito SuzukiYoko Shibata
Aug 12, 2020·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Nahzli DilekCsaba Szabo

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