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 7 Alteration of CGRP levels in all layers of jejunum after TBI. Compared with control group, the level of CGRP was significantly increased at 3 h, then declined significantly at 12 h and 24 h, and significantly increased again at 72 h postinjury, then declined on d 7, but was still significantly higher than that of control. ^aP < 0.05 vs control; ^bP < 0.01 vs control; ^dP < 0.01 vs 3 h, 12 h, 24 h and 7 d.