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Differences of IL-1β Receptors Expression by Immunocompetent Cells Subsets in Rheumatoid Arthritis.

Alshevskaya AA, Lopatnikova JA, Shkaruba NS, Chumasova OA, Sizikov AE, Karaulov AV, Kozlov VA, Sennikov SV - Mediators Inflamm. (2015)

Bottom Line: The effectiveness of the cytokine depends not only on the percentage of receptor-positive cells in an immunocompetent subset but also on the density of receptor expression.The objective of this study was to investigate the expression of IL-1β membrane-bound receptors (IL-1R1 and IL-1R2) in terms of the percentage of receptor-positive cells and the number of receptors per cell in different subsets of immune cells in RA patients before and after a course of basic (excluding anticytokine) therapy and in healthy individuals.The importance of determining both the relative percentage of cells expressing receptors to immunomodulatory cytokines and the number of membrane-bound receptors per cell is highlighted by evidence of unidirectional or multidirectional changing of these parameters according to cell subset and health status.

View Article: PubMed Central - PubMed

Affiliation: Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Street 14, Novosibirsk 630099, Russia.

ABSTRACT
IL-1β is involved in the induction and maintenance of chronic inflammation in rheumatoid arthritis (RA). Its activity is regulated and induced by soluble and membrane-bound receptors, respectively. The effectiveness of the cytokine depends not only on the percentage of receptor-positive cells in an immunocompetent subset but also on the density of receptor expression. The objective of this study was to investigate the expression of IL-1β membrane-bound receptors (IL-1R1 and IL-1R2) in terms of the percentage of receptor-positive cells and the number of receptors per cell in different subsets of immune cells in RA patients before and after a course of basic (excluding anticytokine) therapy and in healthy individuals. The resulting data indicate differences in the expression of IL-1β receptors among T cells, B cells, and monocytes in healthy volunteers and in rheumatoid arthritis patients. The importance of determining both the relative percentage of cells expressing receptors to immunomodulatory cytokines and the number of membrane-bound receptors per cell is highlighted by evidence of unidirectional or multidirectional changing of these parameters according to cell subset and health status.

No MeSH data available.


Related in: MedlinePlus

Density of IL-1R1 and IL-1R2 expression on monocytes in unstimulated and LPS-stimulated MNCs cultured for 24 h from healthy individuals (n = 150) and RA patients in the acute phase (n = 33) and after response to treatment (n = 21). The data are presented as the median and interquartile range. The arrows denote significance of intergroup differences and asterisks denote significance of stimulation, p < 0.05.
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fig4: Density of IL-1R1 and IL-1R2 expression on monocytes in unstimulated and LPS-stimulated MNCs cultured for 24 h from healthy individuals (n = 150) and RA patients in the acute phase (n = 33) and after response to treatment (n = 21). The data are presented as the median and interquartile range. The arrows denote significance of intergroup differences and asterisks denote significance of stimulation, p < 0.05.

Mentions: Expression of IL-1 receptors on monocytes (CD14+) in unstimulated and LPS-stimulated human PBMC cultures was assessed in a more detailed study of changes in the system of IL-1β receptors under a simulated proinflammatory response. To study the ability of cells to respond to stimulation, we assessed the expression of IL-1β receptors types 1 and 2 on monocytes of PBMC cultured for 24 h in the presence and absence of LPS (O55 : B5). We determined the percentage of monocytes expressing types 1 and 2 receptors (Figure 3) and calculated the absolute number of receptors per cell (Figure 4).


Differences of IL-1β Receptors Expression by Immunocompetent Cells Subsets in Rheumatoid Arthritis.

Alshevskaya AA, Lopatnikova JA, Shkaruba NS, Chumasova OA, Sizikov AE, Karaulov AV, Kozlov VA, Sennikov SV - Mediators Inflamm. (2015)

Density of IL-1R1 and IL-1R2 expression on monocytes in unstimulated and LPS-stimulated MNCs cultured for 24 h from healthy individuals (n = 150) and RA patients in the acute phase (n = 33) and after response to treatment (n = 21). The data are presented as the median and interquartile range. The arrows denote significance of intergroup differences and asterisks denote significance of stimulation, p < 0.05.
© Copyright Policy - open-access
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4581579&req=5

fig4: Density of IL-1R1 and IL-1R2 expression on monocytes in unstimulated and LPS-stimulated MNCs cultured for 24 h from healthy individuals (n = 150) and RA patients in the acute phase (n = 33) and after response to treatment (n = 21). The data are presented as the median and interquartile range. The arrows denote significance of intergroup differences and asterisks denote significance of stimulation, p < 0.05.
Mentions: Expression of IL-1 receptors on monocytes (CD14+) in unstimulated and LPS-stimulated human PBMC cultures was assessed in a more detailed study of changes in the system of IL-1β receptors under a simulated proinflammatory response. To study the ability of cells to respond to stimulation, we assessed the expression of IL-1β receptors types 1 and 2 on monocytes of PBMC cultured for 24 h in the presence and absence of LPS (O55 : B5). We determined the percentage of monocytes expressing types 1 and 2 receptors (Figure 3) and calculated the absolute number of receptors per cell (Figure 4).

Bottom Line: The effectiveness of the cytokine depends not only on the percentage of receptor-positive cells in an immunocompetent subset but also on the density of receptor expression.The objective of this study was to investigate the expression of IL-1β membrane-bound receptors (IL-1R1 and IL-1R2) in terms of the percentage of receptor-positive cells and the number of receptors per cell in different subsets of immune cells in RA patients before and after a course of basic (excluding anticytokine) therapy and in healthy individuals.The importance of determining both the relative percentage of cells expressing receptors to immunomodulatory cytokines and the number of membrane-bound receptors per cell is highlighted by evidence of unidirectional or multidirectional changing of these parameters according to cell subset and health status.

View Article: PubMed Central - PubMed

Affiliation: Federal State Budgetary Scientific Institution "Research Institute of Fundamental and Clinical Immunology", Yadrintsevskaya Street 14, Novosibirsk 630099, Russia.

ABSTRACT
IL-1β is involved in the induction and maintenance of chronic inflammation in rheumatoid arthritis (RA). Its activity is regulated and induced by soluble and membrane-bound receptors, respectively. The effectiveness of the cytokine depends not only on the percentage of receptor-positive cells in an immunocompetent subset but also on the density of receptor expression. The objective of this study was to investigate the expression of IL-1β membrane-bound receptors (IL-1R1 and IL-1R2) in terms of the percentage of receptor-positive cells and the number of receptors per cell in different subsets of immune cells in RA patients before and after a course of basic (excluding anticytokine) therapy and in healthy individuals. The resulting data indicate differences in the expression of IL-1β receptors among T cells, B cells, and monocytes in healthy volunteers and in rheumatoid arthritis patients. The importance of determining both the relative percentage of cells expressing receptors to immunomodulatory cytokines and the number of membrane-bound receptors per cell is highlighted by evidence of unidirectional or multidirectional changing of these parameters according to cell subset and health status.

No MeSH data available.


Related in: MedlinePlus