Blood platelet quantification by light scattering: from morphology to activation
| Autor: | A.V. Chernyshev, Dmitry I. Strokotov, Alena L. Litvinenko, Valeri P. Maltsev, Anna N. Shilova, Andrey Karpenko, Vyacheslav M. Nekrasov, Alexander E. Moskalensky |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Blood Platelets
0303 health sciences Sampling protocol Shape change Materials science General Chemical Engineering General Engineering Reproducibility of Results Discrete dipole approximation Flow Cytometry Platelet Activation 01 natural sciences Light scattering Analytical Chemistry 010309 optics 03 medical and health sciences Hematology analyzer 0103 physical sciences Phenomenological model Humans Platelet Computer Simulation Platelet activation 030304 developmental biology Biomedical engineering |
| Zdroj: | Analytical methods : advancing methods and applications. 13(29) |
| ISSN: | 1759-9679 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|