Hepcidin and GDF-15 are potential biomarkers of iron deficiency anaemia in chronic kidney disease patients in South Africa

ABSTRACT: Background Anaemia is a common presenting feature among patients with chronic kidney disease (CKD) and it is associated with poor clinical outcomes and quality of life. It is not clear if growth differentiation factor-15 (GDF-15) or hepcidin are useful as early markers of iron deficiency anaemia (IDA) among non-dialysis CKD patients. We therefore evaluated the diagnostic validity of GDF-15 and hepcidin as biomarkers of IDA among non-dialysis CKD patients in Johannesburg, South Africa. Method An analytic cross-sectional study was conducted among non-dialysis CKD patients (n?=?312) and apparently healthy controls (n?=?184) from June to December 2016 at an Academic Hospital, in Johannesburg, South Africa. An interviewer administered proforma was used to obtain the socio-biological and clinical characteristics of the participants. Serum levels of GDF-15 and hepcidin were determined. Predictive logistic regression models were built and post estimation receiver operator characteristics were determined to evaluate diagnostic validity of hepcidin and GDF-15 for absolute and functional iron deficiency anaemia. Results About half (50.6%) of the participants were female while the participants’ mean age was 49.7?±?15.8?years. The predictive value of diagnosing absolute IDA among CKD patients using GDF-15 was 74.02% (95% CI: 67.62–80.42%) while the predictive value of diagnosing functional IDA among CKD patients using hepcidin was 70.1% (95% CI: 62.79–77.49%).There was a weak negative correlation between hepcidin levels and GFR (r?=???0.19, p?=?0.04) in anaemic CKD patients, and between serum GDF-15 and haemoglobin (r?=???0.34, p?=?0.001). Serum ferritin (??=?0.00389, P-value

SUBMITTER: Nalado A 

PROVIDER: S-EPMC7523312 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature