Table 4. Correlations between the number of T-cell subsets and serum miRNA expression (2^-DCt) at the EV and the FV (all P < 0.05).

Cells		miRNA-146a	miRNA-126a	miRNA-16	miRNA-21	miRNA-29a	miRNA-29b	miRNA-29c
EV
	CD4+IL4+(%CD4+)	NS	NS	NS	NS	NS	−0.48	NS
	CD4+IL17+(%CD4+)	−0.47	NS	NS	−0.53	−0.48	−0.54	NS
	CD4+IL22+(%CD4+)	NS	−0.45	−0.55	−0.53	−0.53	−0.58	−0.53
	CD4+INF+(%CD4+)	−0.63	−0.62	NS	−0.59	−0.57	−0.55	−0.48
	CD8+IL4+(%CD8+)	NS	NS	NS	−0.48	NS	−0.53	NS
	CD8+IL22+(%CD8+)	NS	−0.48	−0.52	−0.53	−0.56	−0.61	−0.60
FV
	CD4+CD25+(%CD4+)	NS	NS	−0.53	NS	NS	NS	NS
	CD4+CD45RA+/CD45RO−(%CD4+)	NS	NS	0.59	NS	NS	NS	NS
	CD4+CXCR5high/PD-1+(%CD4+)	0.46	NS	0.49	NS	NS	NS	NS
	CD4+IL4+(%CD4+)	−0.47	NS	NS	NS	NS	NS	NS
	CD8+IL9 +(%CD8+)	NS	NS	NS	0.47	NS	0.57	0.48

miRNA, micro RNA; EV, exacerbation visit; FV, follow-up visit; NS, not significant; CD, cluster of differentiation; IL, interleukin; INF, interferon; CXCR, CXC chemokine receptors; PD, programmed death.