TY - JOUR

T1 - Blood platelet quantification by light scattering: from morphology to activation

AU - Litvinenko, Alena L.

AU - Nekrasov, Vyacheslav M.

AU - Strokotov, Dmitry I.

AU - Moskalensky, Alexander E.

AU - Chernyshev, Andrey V.

AU - Shilova, Anna N.

AU - Karpenko, Andrey A.

AU - Maltsev, Valeri P.

N1 - Publisher Copyright: © The Royal Society of Chemistry.

PY - 2021/8/7

Y1 - 2021/8/7

N2 - Analysis of blood platelets encounters a number of different preanalytical issues, which greatly decrease the reliability and accuracy of routine clinical analysis. Modern hematology analyzers determine only four parameters relating to platelets. Platelet shape and dose-dependent activation parameters are outside the scope of commercial instruments. We used the original scanning flow cytometer for measurement of angle-resolved light scattering and the discrete dipole approximation for simulation of light scattering from a platelet optical model, as an oblate spheroid, and global optimization with two algorithms: the DATABASE algorithm to retrieve platelet characteristics from light scattering and the DIRECT algorithm to retrieve dose-dependent activation parameters. We developed the original sampling protocol to decrease spontaneous platelet activation. The new protocol allows us to keep most of the platelets in resting and partially activated states before analysis. The analysis delivers 13 content and morphological parameters of the platelets. To analyze platelet shape change during ADP activation we developed a phenomenological model. This model was applied to the analysis of ADP activation of platelets to give 8 dose-dependent activation parameters. To demonstrate the applicability of the developed protocol and analytical method, we analyzed platelets from five donors. This novel approach to the analysis of platelets allows the determination of 21 parameters relating to their content, morphology and dose-dependent activation.

AB - Analysis of blood platelets encounters a number of different preanalytical issues, which greatly decrease the reliability and accuracy of routine clinical analysis. Modern hematology analyzers determine only four parameters relating to platelets. Platelet shape and dose-dependent activation parameters are outside the scope of commercial instruments. We used the original scanning flow cytometer for measurement of angle-resolved light scattering and the discrete dipole approximation for simulation of light scattering from a platelet optical model, as an oblate spheroid, and global optimization with two algorithms: the DATABASE algorithm to retrieve platelet characteristics from light scattering and the DIRECT algorithm to retrieve dose-dependent activation parameters. We developed the original sampling protocol to decrease spontaneous platelet activation. The new protocol allows us to keep most of the platelets in resting and partially activated states before analysis. The analysis delivers 13 content and morphological parameters of the platelets. To analyze platelet shape change during ADP activation we developed a phenomenological model. This model was applied to the analysis of ADP activation of platelets to give 8 dose-dependent activation parameters. To demonstrate the applicability of the developed protocol and analytical method, we analyzed platelets from five donors. This novel approach to the analysis of platelets allows the determination of 21 parameters relating to their content, morphology and dose-dependent activation.

KW - Blood Platelets

KW - Computer Simulation

KW - Flow Cytometry

KW - Humans

KW - Platelet Activation

KW - Reproducibility of Results

UR - http://www.scopus.com/inward/record.url?scp=85112002686&partnerID=8YFLogxK

U2 - 10.1039/d1ay00431j

DO - 10.1039/d1ay00431j

M3 - Article

C2 - 34184022

AN - SCOPUS:85112002686

VL - 13

SP - 3233

EP - 3241

JO - Analytical Methods

JF - Analytical Methods

SN - 1759-9660

IS - 29

ER -