Table 2.

The Serum Levels of Growth Factors and EPCs

	Control	DR	PAD
NGF	243.56 ± 98.80	562.45 ± 125.78*	248.47 ± 102.32
Duncan's multiple range test	B	A	B
VEGF	365.61 ± 87.96	602.29 ± 138.01**	340.67 ± 142.82
Duncan's multiple range test	B	A	B
BDNF	16.76 ± 5.36	30.59 ± 9.93*	13.71 ± 4.19
Duncan's multiple range test	B	A	B
EPO	13.15 ± 3.20	11.89 ± 2.97	11.00 ± 3.95
Duncan's multiple range test	A	A	A
SDF_1	1105.94 ± 341.74	1305.14 ± 455.97	1107.99 ± 432.33
Duncan's multiple range test	A	A	A
EPC	0.05 ± 0.02	0.09 ± 0.05**
Duncan's multiple range test	B	A

Values are mean ± standard deviation.

Results with the same letters indicate no statistical difference.

GDNF was undetectable.

^*P < 0.05,

^**P < 0.01.