Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society, 2017; doi:10.1016/j.jcf.2017.10.013
Affiliation: University of British Columbia, Canada; Prevention of Organ Failure (PROOF) Centre of Excellence, Vancouver, BC, Canada; Prevention of Organ Failure (PROOF) Centre of Excellence, Vancouver, BC, Canada; University of British Columbia, Canada; Prevention of Organ Failure (PROOF) Centre of Excellence, Vancouver, BC, Canada (show more (9))
Abstract: BACKGROUND: Systemic inflammation decreases with IV antibiotics during the treatment of CF pulmonary exacerbations (PEx). We used multiple reaction monitoring mass spectrometry and immunoassays to monitor blood proteins during PEx treatment to determine if early changes could be used to predict PEx outcomes following treatment.
METHODS: Blood samples from 25 PEx (22 unique adults) were collected within 24h of admission, day 5, day 10, and at IV antibiotic completion. Ninety-two blood proteins involved in host immunity and inflammation were measured.
RESULTS: Levels of several blood proteins changed from admission to end of IV antibiotics, most increasing with treatment. Early changes (admission to day 5) in fibrinogen levels had the strongest correlation with overall improvement in CFRSD-CRISS and FEV1% predicted by the end of treatment.
CONCLUSIONS: Several plasma proteins changed significantly with IV antibiotics. Future studies will evaluate fibrinogen as an early biomarker of PEx treatment response in CF.
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