Platelet Extracellular Vesicles in Cord Blood of Term and Preterm Newborns Assayed by Flow Cytometry: the Effect of Delay in Sample Preparation and of Sample Freezing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11110%2F20%3A10429016" target="_blank" >RIV/00216208:11110/20:10429016 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pHUlJMBqeD" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pHUlJMBqeD</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Platelet Extracellular Vesicles in Cord Blood of Term and Preterm Newborns Assayed by Flow Cytometry: the Effect of Delay in Sample Preparation and of Sample Freezing

Popis výsledku v původním jazyce

Plasma levels of circulating platelet extracellular vesicles (PEVs) are an emerging marker of platelet activation, thrombosis, inflammation, and endothelial dysfunction. Analysis of PEVs in cord blood of preterm newborns may reflect the underlying pathology and possibly serve as a new diagnostic and prognostic tool. However, collection, preparation and analysis of cord blood samples in clinical settings is a logistically complex process. We have studied the effect of delay in sample preparation and sample freezing on the PEV analysis by flow cytometry. PEVs in the cord blood plasma were identified after double labelling with monoclonal antibodies CD36+CD41 or CD41+CD62. Both, the delay and the freezing significantly affected the count and often also fluorescence of the detected PEVs. Additionally, our pilot study utilizing fresh cord blood samples of term and preterm newborns demonstrated significantly decreased CD36 and CD62 PEV fluorescence in preterm newborns. Our data highlight the importance of pre-analytical steps in the analysis of cord blood PEVs and suggest that not only the count, but also the level of PEV fluorescence may have possible diagnostic potential.

Název v anglickém jazyce

Platelet Extracellular Vesicles in Cord Blood of Term and Preterm Newborns Assayed by Flow Cytometry: the Effect of Delay in Sample Preparation and of Sample Freezing

Popis výsledku anglicky

Plasma levels of circulating platelet extracellular vesicles (PEVs) are an emerging marker of platelet activation, thrombosis, inflammation, and endothelial dysfunction. Analysis of PEVs in cord blood of preterm newborns may reflect the underlying pathology and possibly serve as a new diagnostic and prognostic tool. However, collection, preparation and analysis of cord blood samples in clinical settings is a logistically complex process. We have studied the effect of delay in sample preparation and sample freezing on the PEV analysis by flow cytometry. PEVs in the cord blood plasma were identified after double labelling with monoclonal antibodies CD36+CD41 or CD41+CD62. Both, the delay and the freezing significantly affected the count and often also fluorescence of the detected PEVs. Additionally, our pilot study utilizing fresh cord blood samples of term and preterm newborns demonstrated significantly decreased CD36 and CD62 PEV fluorescence in preterm newborns. Our data highlight the importance of pre-analytical steps in the analysis of cord blood PEVs and suggest that not only the count, but also the level of PEV fluorescence may have possible diagnostic potential.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

30209 - Paediatrics

Projekt

<a href="/cs/project/NV17-31403A" target="_blank" >NV17-31403A: Diagnostický potenciál buněčných mikropartikulí v patogenezi systémové zánětlivé odpovědi plodu.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Folia Biologica

ISSN

0015-5500

e-ISSN

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Svazek periodika

66

Číslo periodika v rámci svazku

5-6

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

204-211

Kód UT WoS článku

000669523700006

EID výsledku v databázi Scopus

2-s2.0-85107811825