Table 2.

Quantitative measurements of total and phos-phorylated CPI-17 in rat mesenteric artery and aorta

	Total CPI-17		Phosphorylated CPI-17		Contraction
	Concentration (μm)	n	Concentration (μm)	n	% of maximum	n
MA	12.1 ± 1.0*	13	4.1 ± 0.3*	5	80 ± 2*	12
Aorta	4.7 ± 0.3*	12	0.3 ± 0.1*	4	54 ± 2*	11

Phosphorylation of CPI-17 and contraction were measured at a freezing point 30 s after PE stimulation in both artery types. To calculate the CPI-17 concentration in smooth muscle cells, the protein content of a mammalian cell was assumed to be 18% of the total cell weight (Dimopoulos et al. 2007).

^*Significant difference (P < 0.05) from that of MA.