Association of peripheral blood neutrophil gelatinase-associated lipocalin levels with bone marrow neutrophil gelatinase-associated lipocalin levels and neutrophil count in hematologic malignancy

Chi Hyun Cho, Jung Yoon, Deok Su Kim, Shin Jong Kim, Hwa Jung Sung, Se Ryeon Lee

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Background: Although neutrophil gelatinase-associated lipocalin (NGAL) is a biomarker for acute kidney injury, recently, high NGAL levels have been reported in hematologic malignancies. Given the mechanism underlying NGAL synthesis and secretion in neutrophilic series, it is speculated that NGAL levels are higher in bone marrow (BM) than in peripheral blood (PB). Additionally, PB NGAL levels are thought to be associated with neutrophilic parameters. We aimed to test both hypotheses in hematologic malignancies. Methods: Paired BM and PB samples were collected from 41 patients undergoing BM examination for hematologic malignancies. NGAL levels were measured using immunoassays. Data on hematologic parameters were collected from medical records. Single and multiple regression analyses were performed to analyze the relationship. Results: PB and BM NGAL (n = 41) levels were significantly different (163.0 ± 258.3 and 413.1 ± 616.2 ng/mL [mean ± standard deviation], respectively; P < 0.05). Simple regression analysis and multicollinearity assessment showed that BM NGAL levels, BM neutrophil%, and neutrophil count were significant predictors of PB NGAL. Two multiple regression models were developed (model 1, PB NGAL = 21.467* neutrophil count - 0.785*BM neutrophil%; model 2, PB NGAL = 21.202*neutrophil count- 0.915*BM neutrophil% +0.10*BM NGAL). Akaike's information criterion and adjusted R2 values showed that model 1 had higher predictive accuracy for PB NGAL. In both models, neutrophil count was the only significant predictor. Conclusion: BM NGAL was significantly higher than PB NGAL in hematologic malignancy. In addition, PB NGAL could be expressed as a multiple regression model including neutrophil count and BM neutrophil%, being significantly influenced by neutrophil count.

    Original languageEnglish
    Article numbere22920
    JournalJournal of Clinical Laboratory Analysis
    Volume33
    Issue number6
    DOIs
    Publication statusPublished - 2019 Jul

    Keywords

    • NGAL
    • bone marrow
    • hematologic
    • malignancy
    • neutrophil
    • peripheral blood

    ASJC Scopus subject areas

    • Immunology and Allergy
    • Hematology
    • Public Health, Environmental and Occupational Health
    • Clinical Biochemistry
    • Medical Laboratory Technology
    • Biochemistry, medical
    • Microbiology (medical)

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