Table 4.

Passive mechanical wall properties in arteries at 100 mmHg

	Non-pregnant control				Non-pregnant restricted
Arteries	Uterine	Mesenteric	Renal	Femoral	Uterine	Mesenteric	Renal	Femoral
OD (μm)	473 ± 9	403 ± 15	522 ± 12	627 ± 5	479 ± 6	394 ± 6	540 ± 18	644 ± 7
ID (μm)	417 ± 11	377 ± 15	455 ± 12	539 ± 7	442 ± 7	364 ± 6	469 ± 17	559 ± 8
WT (μm)	28 ± 2	14 ± 1	34 ± 1	44 ± 3	19 ± 1†	16 ± 1	36 ± 2	43 ± 2
M-L ratio	0.068 ± 0.007	0.035 ± 0.002	0.075 ± 0.005	0.081 ± 0.006	0.042 ± 0.004 †	0.041 ± 0.003	0.077 ± 0.005	0.077 ± 0.004

	Pregnant control				Pregnant restricted
Arteries	Uterine	Mesenteric	Renal	Femoral	Uterine	Mesenteric	Renal	Femoral
OD (μm)	678 ± 10#	447 ± 23#	543 ± 21	652 ± 6	689 ± 22#	441 ± 20#	573 ± 28	631 ± 12
ID (μm)	617 ± 11#	416 ± 23#	474 ± 17	560 ± 8	626 ± 21#	414 ± 21#	504 ± 27	551 ± 11
WT (μm)	31 ± 3	17 ± 1	35 ± 3	47 ± 3	32 ± 2 §	14 ± 1	36 ± 3	40 ± 3
M-L ratio	0.050 ± 0.005 ‡	0.039 ± 0.005	0.073 ± 0.006	0.083 ± 0.006	0.050 ± 0.004	0.034 ± 0.003	0.070 ± 0.006	0.073 ± 0.006

Outside diameter (OD), internal diameter (ID), wall thickness (WT) and media-to-lumen (M-L) ratio in arteries from non-pregnant and pregnant (E20) animals. Values are expressed as means ± SEM; uterine (n = 8–10/group); mesenteric (n = 6–10/group); renal (n = 8–10/group); femoral (n = 6–10/group). #P < 0.05 vs. non-pregnant (main effect). †P < 0.05 vs. non-pregnant Control (following significant interaction). §P < 0.05 vs. non-pregnant Restricted (following significant interaction). ‡P < 0.05 vs. non-pregnant Control (following significant interaction). — indicates no response.