Levels of vasoactive intestinal peptide, cholecystokinin and calcitonin gene-related peptide in plasma and jejunum of rats following traumatic brain injury and underlying significance in gastrointestinal dysfunction

Figure 3 Alteration of CCK in plasma after TBI. Compared with control, plasma level of CCK was significantly increased postinjury, and peaked at 72 h, then declined to some degree on d 7, but was still significantly higher than that of control. ^bP < 0.01 vs control; ^dP < 0.01 vs 3 h. Mean ± SD of 6 animals, control: 2.1 ± 0.3 µg/L, 3 h: 5.8 ± 1.2 µg/L, 12 h: 6.7 ± 0.5 µg/L, 24 h: 8.3 ± 0.7 µg/L, 72 h: 10.8 ± 1.2 µg/L, 7 d: 4.8 ± 0.9 µg/L.