Mechanical characteristics of mesenchymal stem cells under impact of silica-based nanoparticles

Table 1 Stiffness of cells (pN/nm)

Study groups/duration of cultivation		Control	Si	SiB
24 h	M ± D	1.20 ± 0.11 (n = 27)	1.95 ± 0.13* (n = 28)	2.83 ± 0.16*^/$ (n = 30)
24 h	M ± SE	1.20 ± 0.04 (n = 27)	1.95 ± 0.05* (n = 28)	2.83 ± 0.05*^/$ (n = 30)
1 h	M ± D	0.95 ± 0.08* (n = 31)	2.7 ± 0.7^@/$ (n = 27)	3.3 ± 1.1^@/#/% (n = 28)
	M ± SE	0.95 ± 0.04* (n = 31)	2.66 ± 0.11^@/$ (n = 27)	3.27 ± 0.14^@/#/% (n = 28)

n, number of cells investigated; M, mean value; D, dispersion; SE, standard error of the mean; *p < 0.05 as compared to Control 24 h group, ^$p < 0.05 as compared to Si 24 h group, ^@p < 0.05 as compared to Control 1 h group, ^#p < 0.05 as compared to Si 1 h group, ^%p < 0.05 as compared to SiB 24 h group.