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Определение субпопуляций В-лимфоцитов периферической крови методом проточной цитофлуорометрии у здоровых лиц и больных ревматическими заболеваниями

Определение субпопуляций В-лимфоцитов периферической крови методом проточной цитофлуорометрии у здоровых лиц и больных ревматическими заболеваниями

Abstract

The study was carried out to apply technique of flow cytofluorometry for immunofenotyping of sub-populations of B-cells ofperipheral blood in healthy persons and patients with rheumatoid diseases. The samples included 27 healthy donors, 16 patients with rheumatoid arthritis and 9 patients with systemic lupus erythematosus. The peripheral blood of all participants was analyzed for relative number of CD19+B-cells, total population of memory B-cells (CD19+CD27+); unswitched (GD19+IgD+CD27+) and switched (GD19+IgD-CD27+) memory B-cells, naive (CD19+IgD+CD27-) and transitory (CD19+IgD+CD10+CD38++CD27-) B-cells, plasmablasts (CD19+CD38+++IgD-CD27+CD20+) and long-lived plasmatic cells (CD19+CD138+). The sub-populations of B-cells were identified by technique of multicolorflow cytofluorometry using panel of monoclonal antibodies to surface membrane markers of B-lymphocytes. In normal state, relative number (median-Me; interquartile range 25-75 percentiles) of CD19+B-lymphocytes amounted to 9.1 (6.6-11.6)%; CD19+CD27+ memory B-cells 2.2 (1.6-3.3)%; unswitched and switched memory B-cells 10 (6.4-12.7)% and 17.7 (14.9-27.0)%; naive B-cells 65.8 (55.1-73.4)%; transitory B-cells 0.1 (0.1-0.3)%; plasmablasts 7.0 (5.0-9.4)%. The long-lived plasmatic cells in peripheral blood were absent. In patients with rheumatoid arthritis percentage of content of total population ofmemory B-cells were lower than in donors (1.6; 1.00-2.3%; p=0.038). Under systemic lupus erythematosus was detected decreasing of number of naive B-cells (40.2; 19.7-58.2) and increasing of level of switched memory B-cells (34.2; 21.0-52.7) as compared with donors (p=0.003 in both cases). The study established no reliable differences between healthy donors and patients with rheumatoid arthritis and systemic lupus erythematosus in the rest of sub-populations of B-lymphocytes. The developed technique of multi-parametric flow cytofluorometry can be recommended for studying homeostasis of B-cells ofperipheral blood in healthy persons and patients with auto-immune rheumatoid diseases and also for evaluating and forecasting effectiveness of anti-B-cells therapy.

Цель использовать методику проточной цитофлуорометрии для иммунофенотипирования субпопуляций В-клеток периферической крови у здоровых лиц и больных ревматическими заболеваниями (РЗ). В периферической крови 27 здоровых доноров, 16 пациентов с ревматоидным артритом (РА) и 9 пациентов с системной красной волчанкой (СКВ) изучали относительное количество CD19 +В-клеток, общей популяции В-клеток памяти (CD19 +CD27 +); непереключенных (CD19 +IgD +CD27 +) и переключенных (CD19 +IgD -CD27 +) В-клеток памяти, наивных (CD19 +IgD +CD27 -) и транзиторных (CD19 +IgD +CD10 +CD38 ++CD27 -) В-клеток, плазмобластов (CD19 +CD38 +++IgD -CD27 +CD20 -) и долгоживущих плазматических клеток (CD19 +CD138 +). Субпопуляции В-клеток определялись методом многоцветной проточной цитофлуорометрии с использованием панели моноклональных антител к поверхностным мембранным маркерам В-лимфоцитов. В норме относительное количество (медиана -Ме; интерквартильный размах 25-75 процентили) CD19 +В-лимфоцитов составило 9,1 (6,6-11,6)%; CD19 +CD27 +В-клеток памяти 2,2 (1,6-3,3)%; непереключенных и переключенных В-клеток памяти 10 (6,4-12,7) и 17,7 (14,9-27,0)%; наивных В-клеток 65,8 (55,1-73,4)%; транзиторных 0,1 (0,1-0,3)%; плазмобластов 7,0 (5,0-9,4)%. Долгоживущие плазматические клетки в периферической крови отсутствовали. У больных РА процентное содержание общей популяции В-клеток памяти было ниже, чем у доноров (1,6; 1,00-2,3%, р=0,038). При СКВ отмечено уменьшение количества наивных В-клеток (40,2; 19,7-58,2) и повышение уровня переключенных В-клеток памяти (34,2; 21,0-52,7) по сравнению с донорами (р=0,003 в обоих случаях). Достоверных различий в остальных субпопуляциях В-лимфоцитов между здоровыми донорами и пациентами с РА и СКВ не обнаружено (р>0,05). Разработанную методику многопараметрической проточной цитофлуорометрии можно рекомендовать для изучения гомеостаза В-клеток периферической крови у здоровых лиц и больных аутоиммунными РЗ, а также для оценки и прогнозирования эффективности анти-В-клеточной терапии.

Keywords

ПРОТОЧНАЯ ЦИТОФЛУОРОМЕТРИЯ, CD19+В-КЛЕТКИ, В-КЛЕТКИ ПАМЯТИ, НАИВНЫЕ В-КЛЕТКИ, ТРАНЗИТОРНЫЕ В-КЛЕТКИ, ПЛАЗМОБЛАСТЫ, ДОЛГОЖИВУЩИЕ ПЛАЗМАТИЧЕСКИЕ КЛЕТКИ, РЕВМАТОИДНЫЙ АРТРИТ, СИСТЕМНАЯ КРАСНАЯ ВОЛЧАНКА, CD19+CELLS

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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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