[Comparison of an immature platelet fraction and reticulated platelet in liver cirrhosis].
BACKGROUND
The main causes of thrombocytopenia in cirrhosis are thought to be platelet destruction and the reduction of thrombopoietin (TPO) expression in the liver. Immature platelet fraction (IPF) has been measured by a fully automated analyzer (Sysmex XE-2100, Japan) as reticulated platelet (RP), which is reflected with thrombopoiesis in bone marrow. In this study, we tried to compare the percentage of IPF (IPF) with that of RP (RP) in patients with liver cirrhosis (LC) and controls.


METHODS
We compared IPF to RP in 72 liver cirrhosis patients and 30 healthy normal controls. RP was stained with acridine orange, followed by FC500 (Beckman Coulter, USA) analysis and the IPF was identified by flow cytometry with the use of a nucleic acid specific dye in the reticulocyte channel on the Sysmex XE-2100 (TOA Medical Electronics Co., Ltd., Japan).


RESULTS
IPF value in the healthy control was 2.2% (1.7-5.2). RP and IPF were significantly higher in the patients with liver cirrhosis (P<0.05). IPF appeared to be correlated with RP (y=0.19x+3.35, r=0.34, P<0.05). In ROC for diagnosis of LC, IPF was significantly more useful than RP.


CONCLUSIONS
This results show that a rapid, inexpensive automated method for measuring the IPF is feasible and should become a standard parameter in evaluating reticulated platelets.
Kim
Hye Ryoun
HR
Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
Park
Bo Rae G
BR
Lee
Mi Kyung
MK
Park
Ae Ja
AJ
Ahn
Jeong Yeal
JY
D000368:Aged; D005260:Female; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D010976:Platelet Count / Q000379:methods*; D013234:Stem Cells / Q000166:cytology*; D013921:Thrombocytopenia / Q000175:diagnosis* / Q000209:etiology