Expression of programmed death (PD)-1 and PD-1 ligands (PD-L1, PD-L2) in peripheral blood mononuclear cells of patients with systemic lupus erythematosus

Table 1

	Disease group
	Healthy controls		Systemic lupus erythematosus		Rheumatoid arthritis		Inflammatory disease
	Mean	SEM	Mean	SEM	Mean	SEM	Mean	SEM
PD-1⁺ (%)
in CD3⁺	0.6	0.2	0.4	0.1	1.6	0.6	0.5	0.1
in CD19⁺	1.7	0.9	1.4	0.3	0.9	0.4	1.1	0.4
in CD25⁺	3.0	1.0	2.4	0.7	3.3	1.6	8.5	3.4
PD-L1⁺ (%)
in CD3⁺	2.8	1.2	4.1	0.9	2.3	0.5	2.0	0.6
in CD19⁺	3.9	1.3	5.1	0.9	3.7	1.0	11.3	8.0
in CD14⁺	5.1	2.0	14.0	5.4	2.9	0.9	5.7	3.2
PD-L2⁺ (%)
in CD3⁺	0.6	0.2	0.5	0.1	0.5	0.2	0.4	0.0
in CD14⁺	2.0	0.5	1.4	0.3	1.1	0.5	1.2	0.1

SEM, standard error of the mean. No statistically significant differences were observed.

ISSN: 1478-6362