Expression of cellular protective proteins SIRT1, HSP70 and SOD2 correlates with age and is significantly higher in NK cells of the oldest seniors

Table 2 Correlation analysis of the study population

Spearman’s correlation coefficient (R)	SIRT1	SOD2	HSP70^{intracellular}	HSP70^surface	TNF	IFN-γ	CRP
SOD2	0.517
HSP70^{intracellular}	0.705	0.466
HSP70^surface	0.439	0.669	0.418
TNF	0.262	ns	0.263	ns
IFN-γ	ns	ns	ns	ns	ns
CRP	ns	0.274	0.292	ns	−0.262	ns
Age	0.455	0.520	0.402	0.320	ns	−0.254	0.507

All values are presented as statistically significant Spearman’s correlation coefficients (R). ‘ns’ denotes statistically not significant

ISSN: 1742-4933