Table 1.

Diameter of postcapillary mesenteric venules: LPS-treated animals and controls displayed no changes in capillary diameter

	Baseline	0.5 h	1 h	2 h
Control	25.61 ± 0.57	26.84 ± 1.30	27.88 ± 1.68	27.83 ± 1.50
LPS	25.61 ± 0.57	27.43 ± 0.88	25.33 ± 1.2	24.58 ± 1.20
Rolipram+LPS	25.61 ± 0.57	27.08 ± 2.03	31.38 ± 1.47	22.9 ± 1.0*
Roflumilast+LPS	25.61 ± 0.57	24.27 ± 0.66	28.07 ± 1.66	28.44 ± 1.11

PD-4-I treatment showed no consistent effect on microvascular vessels;

^*P < 0.05 vs. control.