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Table 1 Correlation analysis concerning the relationships between age and the expression of cellular protective proteins

From: NKT-like (CD3 + CD56+) cells differ from T cells in expression level of cellular protective proteins and sensitivity to stimulation in the process of ageing

CD3+ cells
Compared parameters
Parameter Stimulation type SIRT1 [%] SIRT1 [MFI] SOD2 [%] SOD2 [MFI] HSP70 [%] HSP70 [MFI]
Age none 0.352*** 0.307** Ns Ns 0.277* 0.287**
IL-2 Ns Ns Ns Ns Ns Ns
LPS 0.433*** 0.414*** −0.327** −0.231* 0.367*** 0.392***
PMA/ion Ns 0.396*** Ns 0.25* Ns 0.242*
CD3 + CD56+ cells
Compared parameters
  Parameter Stimulation type SIRT1 [%] SIRT1 [MFI] SOD2 [%] SOD2 [MFI] HSP70 [%] HSP70 [MFI]
  Age none 0.353*** 0.297** Ns Ns 0.269* 0.233*
IL-2 Ns Ns Ns Ns Ns Ns
LPS 0.382*** 0.383*** Ns Ns 0.345** 0.39***
PMA/ion Ns 0.242* Ns Ns Ns Ns
  1. All values are presented as statistically significant Spearman’s correlation coefficients (Rs). ‘Ns’ denotes statistically not significant, the respective symbols denote * < 0.05, ** < 0.01, *** < 0.001