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2015 ; 2015
(ä): 309042
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Evaluation of Serum Cystatin C as a Marker of Early Renal Impairment in Patients
with Liver Cirrhosis
#MMPMID26550493
Omar M
; Abdel-Razek W
; Abo-Raia G
; Assem M
; El-Azab G
Int J Hepatol
2015[]; 2015
(ä): 309042
PMID26550493
show ga
Background. Serum cystatin C (CysC) was proposed as an effective reflection of
the glomerular filtration rate (GFR). However, its role in patients with liver
cirrhosis has not been extensively verified especially in the detection of early
RI. Patients and Methods. Seventy consecutive potential candidates for living
donor liver transplantation with serum creatinine (Cr) <1.5?mg/dL were included.
CysC, Cr, and estimated GFR [creatinine clearance (CCr), Cockcroft-Gault formula
(C-G), MDRD equations with 4 and 6 variables, CKD-EPI-Cr, CKD-EPI-CysC, and
CKD-EPI-Cr-CysC] were all correlated to isotopic GFR. Early RI was defined as GFR
of 60-89?mL/min/1.73?m(2). Results. Patients were 25.7% and 74.3% Child-Pugh
classes B and C, respectively. GFR was ?90, 60-89, and 30-59?mL/min/1.73?m(2) in
31.4%, 64.3%, and 4.3% of the patients, respectively. All markers and equations,
except C-G, were significantly correlated to GFR with CKD-EPI-Cr-CysC formula
having the highest correlation (r = 0.474) and the largest area under the ROC
curve (0.808) for discriminating early RI. At a cutoff value of 1.2?mg/L, CysC
was 89.6% sensitive and 63.6% specific in detecting early RI. Conclusion. In
patients with liver cirrhosis, CysC and CysC-based equations showed the highest
significant correlation to GFR and were measures that best discriminated early
RI.