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Клиническое значение иммунофенотипирования клеток костного мозга при множественной миеломе

Клиническое значение иммунофенотипирования клеток костного мозга при множественной миеломе

Abstract

Цель. Анализ взаимосвязи между экспрессией аберрантных маркеров CD45, CD19 и CD56 на плазматических клетках и клинико-лабораторными и прогностически значимыми показателями у больных множественной миеломой (ММ). Методы. В настоящее исследование включены данные клинического анализа и иммунофенотипирования клеток костного мозга 64 больных ММ, наблюдавшихся в ФГБУ «РОНЦ им. Н.Н. Блохина» МЗ РФ с 2004 по 2015 г. Проточную трехцветную цитометрию проводили с использованием диагностической панели первично меченных флюорохромами моноклональных антител (CD38-PerCP, CD138-FITC) и конъюгированных с РЕ-моноклональными антителами к CD45, CD19 и CD56. Результаты. При сравнении средних значений общего количества клеток плазмоцитарного ряда, числа плазмобластов, проплазмоцитов и зрелых плазматических клеток по данным миелограммы, а также сопоставлении этих данных с уровнем экспрессии маркера CD19 выявлены определенные закономерности. Отмечена статистически значимая взаимосвязь CD19-негативного иммунофен типа с более высоким уровнем как общего количества элементов плазмоцитарного ряда, так и молодых форм плазматических клеток. Выявлена статистически значимая корреляция CD19-негативного иммунофенотипа с более высоким уровнем С-реактивного белка — важного прогностического параметра при ММ. Кроме того, обнаружена взаимосвязь CD19-негативного фенотипа с более высоким числом (%) молодых форм нейтрофилов в крови, т. е. с более частым левым сдвигом в лейкоцитарной формуле. Для CD56-негативного фенотипа характерна плазмобластная морфология опухолевых клеток, а также наличие плазматических клеток в крови. Плазмоклеточный лейкоз чаще диагностируется у больных с СD56-негативным фенотипом опухолевых клеток. При CD45-негативном иммунофенотипе миеломных клеток в сравнении CD45-позитивным наблюдались более высокий уровень свободных легких цепей κ-типа, протеинурия Бенс-Джонса, а также более высокий уровень креатинина в сыворотке. Заключение. Исследование иммунофенотипа плазматических клеток при ММ имеет важное научно-практическое значение и требует дальнейшего изучения.

Aim. To analyze the relationship between expression of aberrant CD45, CD19, CD56 markers on the plasma cells and clinical and laboratory findings and prognostically significant parameters in patients with multiple myeloma (MM). Methods. This scientific research includes data on clinical investigation and immunophenotyping of bone marrow cells obtained from 64 MM patients treated in the N.N. Blokhin Russian Cancer Research Center over the period from 2004 to 2015. The three-color flow cytometry was performed using a direct immunofluorescence technique (CD38-PerCP, CD138FITC monoclonal antibodies) and PE-conjugated monoclonal antibodies against CD45, CD19, and CD56. Results. Comparison of average values of the total count of plasma cells, the number of plasmablasts, proplasmacyte and mature plasma cells (according to the myelogram) and comparison of these data with the level of expression of the CD19 marker demonstrated a significant relationship between the CD19 negative immunophenotype and both a higher level of the total count of plasma cells and immature plasma cells. There also was a significant correlation between the CD19 negative immunophenotype and a higher level of C-reactive protein, which is significant prognostic factor in MM. In addition, there was a significant relationship between the CD19 negative phenotype and a higher percentage of young neutrophils in blood, i.e. with a more frequent “left shift”. The CD56 negative phenotype is associated with plasmablastic morphology of plasma cells and with the presence of plasma cells in the peripheral blood. Plasma cell leukemia is more common in patients with СD56 negative phenotype of myeloma cells. The CD45 negative immunophenotype was associated with a higher level of κ-type FLCs, Bence-Jones proteinuria and with a higher serum creatinine, than in the cases of CD45 positive phenotype. Conclusion. The study of the immunophenotype of plasma cells in MM has important scientific and practical significance and requires further study.

Keywords

множественная миелома, аберрантный иммунофенотип плазматических клеток, маркеры CD45, CD19 и CD56, клинико-лабораторные показатели

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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