Reduced platelet activation and platelet aggregation in patients with alcoholic liver cirrhosis

Results from previous studies regarding platelet function in liver cirrhosis are discordant. The aim was to investigate platelet activation and platelet aggregation in patients with alcoholic liver cirrhosis. We included 27 patients with alcoholic liver cirrhosis and 22 healthy individuals. A recent...

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Vydáno v:Platelets (Edinburgh) Ročník 29; číslo 5; s. 520 - 527
Hlavní autoři: Vinholt, Pernille Just, Hvas, Anne-Mette, Nielsen, Christian, Söderström, Anna Cecilia, Sprogøe, Ulrik, Fialla, Annette Dam, Nybo, Mads
Médium: Journal Article
Jazyk:angličtina
Vydáno: England Taylor & Francis 04.07.2018
Taylor & Francis Group
Témata:
Alcohol
liver cirrhosis
platelet count
platelet function
platelet count
Alcohol
platelet function
liver cirrhosis
ISSN:0953-7104, 1369-1635, 1369-1635
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Shrnutí:Results from previous studies regarding platelet function in liver cirrhosis are discordant. The aim was to investigate platelet activation and platelet aggregation in patients with alcoholic liver cirrhosis. We included 27 patients with alcoholic liver cirrhosis and 22 healthy individuals. A recently established flow cytometric approach was used to measure platelet activation and platelet aggregation independent of sample platelet count. Platelet aggregation was further investigated using light transmission aggregometry (LTA) (for platelet count >100 × 10 9 /L). Platelet agonists were adenosine diphosphate, thrombin receptor-activating peptide, arachidonic acid, collagen, and collagen-related peptide. Patients had lower median platelet count than healthy individuals, 125 × 10 9 /L (interquartile range [IQR] 90˗185) versus 240 × 10 9 (IQR 204˗285), p < 0.001. Platelet activation levels in stimulated samples were lower in patients versus healthy individuals, e.g., after collagen-related peptide stimulation, the median percentage of platelets positive for activated glycoprotein IIb/IIIa was 85% (IQR 70-94) in patients versus 97% (IQR 94-99) in healthy individuals, p < 0.001; lower platelet activation capacity being associated with low platelet count and Child-Pugh class B/C cirrhosis. Flow cytometric platelet aggregation was reduced in patients for collagen-related peptide and for adenosine diphosphate, e.g., platelet aggregation (mean ± standard deviation) was 57% ± 4 in patients versus 70% ± 1 in healthy individuals for collagen-related peptide, p = 0.01. Light LTA showed reduced collagen-induced platelet aggregation in some patients compared with healthy individuals. In conclusion, platelet function was reduced in some patients with alcoholic liver cirrhosis and the severity was associated with platelet count and severity of liver cirrhosis.
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ISSN:0953-7104
1369-1635
1369-1635
DOI:10.1080/09537104.2017.1349308