Table 1.

Cellular competition study of P1-Gd-LP, P2-Gd-LP, and P3-Gd-LP, with P1, P2, and P3 respectively added to inhibit receptors in the competition groups. The data of all experiments were expressed by the mean ± standard deviation (n = 5)

Gd concentration (mmol/l)	HUVEC				A549
	Gd-LP		P1-Com		Gd-LP		P1-Com
P1-Gd-LP	1.15 ± 0.04	P < 0.001	1.26 ± 0.10	P = 0.001	1.12 ± 0.06	P < 0.001	1.19 ± 0.08	P < 0.001
	1.62 ± 0.16		1.62 ± 0.16		1.72 ± 0.07		1.72 ± 0.07
Gd-LP	–		1.26 ± 0.10	P = 0.227	–		1.19 ± 0.08	P = 0.029
			1.15 ± 0.04				1.12 ± 0.0
	Gd-LP		P2-Com		Gd-LP		P2-Com
P2-Gd-LP	0.95 ± 0.03	P < 0.001	1.05 ± 0.04	P < 0.001	0.85 ± 0.06	P = 0.001	0.90 ± 0.07	P = 0.007
	1.24 ± 0.05		1.24 ± 0.05		1.03 ± 0.06		1.03 ± 0.06
Gd-LP	–		1.05 ± 0.04	P = 0.045	–		0.90 ± 0.07	P = 0.202
			0.95 ± 0.03				0.85 ± 0.06
	Gd-LP		P3-Com		Gd-LP		P3-Com
P3-Gd-LP	0.92 ± 0.04	P < 0.001	1.02 ± 0.06	P < 0.001	0.88 ± 0.04	P < 0.001	0.92 ± 0.06	P = 0.002
	1.15 ± 0.4		1.15 ± 0.4		1.10 ± 0.10		1.10 ± 0.10
Gd-LP	–		1.02 ± 0.06	P = 0.075	–		0.92 ± 0.06	P = 0.401
			0.92 ± 0.04				0.88 ± 0.04