He lower (green) boundary; and the changed genes closely linked to the acute pancreatitis were shown in the clustering patterns (Fig. 3B). It was obvious that in the expression profile, the genes with significantly differential expressions ( 2-fold, P,0.05) are mainly those which were related with the pancreatic ASP015K digestive enzymes, inflammatory mediators and the signal transduction pathways, which 
were singled out and listed with their Gene Name and Genebank ID in Table 1. Changes of IL-6, KC and LPS levels in AP serum. Both IL-6 and KC levels in the serum of AP rats displayed significant increases as compared to those of control rats, with upsurges of 145 and 186 , respectively (P,0.05; Fig. 4). A similar but more prominent increase was seen in the LPS level in the serum of AP rats, with an upsurge as much as 231 times of that of the control group (P,0.01; Fig. 4A).Changes of gastrin and somatostatin levels in the serum of AP rats. In the serum of AP rats, gastrin and 
somatostatinto those of control rats, with upsurges of 177 and 347 , respectively (Fig. 4C).Expression of CB1 and CB2 receptors in rat pancreas and stomach. The expression characteristics of CB1 and CBreceptors in rat pancreas and stomach were investigated. The results demonstrated that the specimens from animals in control group presented only weak immunohistological staining for CB1 and CB2 receptors in the pancreas, whereas specimens from AP rats had exhibited increased expressions of CB1 and CB2 receptors. Mainly, the strong positive signs of brown dyeing clustered in the pancreatic acini (Fig. 5 A arrowheads). The upregulations of CB1 and CB2 receptors in the pancreatic tissues of AP rats were further demonstrated by western blot analysis and presented in Fig.5 B. The similar expression characteristics of CB1 and CB2 receptors 23977191 were also found in the stomach of the AP rats, as demonstrated by both immunohistological staining and western blot assay (Fig. 5 C and 5 D). The strong positive signs of brown dyeing were mainly in the gastric mucosa (Fig. 5 C, arrowheads).Results from Experiment In VitroEffect of cannabinoids on gastric pathological changes and on gastrin and somatostatin release. To investigate thelevels increased significantly as compared to those of control rats, with upsurges of 169 and 147 , respectively (in both cases, P,0.05; Fig. 4B). assays for pepsin level and [H+] were performed by using the gastric juice of AP and control rats. Both pepsin level and [H+] in the gastric juice showed a distinct increase in AP rats as comparedChanges of pepsin levels and [H+] in gastric juice of AP rats. To evaluate the changes of gastric exocrine function,effect of CB1 receptor agonist HU210 on the endocrine function of the isolated rat stomach stimulated with AP rat serum, we examined the alterations of gastrin and somatostatin levels in the venous effluent of the stomach, with or without intervention of CB1 receptor agonist HU210 and antagonist AM251. The results showed that compared to the control group, the rat stomach treated with AP serum provoked an increased gastrin Sudan I biological activity release (P,0.05), but a decreased somatostatin release (P,0.05), HU210 reversed the gastrin and somatostatin changes induced by serum of AP rats (P,0.05), while AM251 did not exhibit detectable impact on the release of the two hormones (Fig. 6). AM251 on pepsin activity and [H+] in the gastric lumen effluent of the isolated rat stomach were presented in Fig. 7. Compared to the counterparts of t.He lower (green) boundary; and the changed genes closely linked to the acute pancreatitis were shown in the clustering patterns (Fig. 3B). It was obvious that in the expression profile, the genes with significantly differential expressions ( 2-fold, P,0.05) are mainly those which were related with the pancreatic digestive enzymes, inflammatory mediators and the signal transduction pathways, which were singled out and listed with their Gene Name and Genebank ID in Table 1. Changes of IL-6, KC and LPS levels in AP serum. Both IL-6 and KC levels in the serum of AP rats displayed significant increases as compared to those of control rats, with upsurges of 145 and 186 , respectively (P,0.05; Fig. 4). A similar but more prominent increase was seen in the LPS level in the serum of AP rats, with an upsurge as much as 231 times of that of the control group (P,0.01; Fig. 4A).Changes of gastrin and somatostatin levels in the serum of AP rats. In the serum of AP rats, gastrin and somatostatinto those of control rats, with upsurges of 177 and 347 , respectively (Fig. 4C).Expression of CB1 and CB2 receptors in rat pancreas and stomach. The expression characteristics of CB1 and CBreceptors in rat pancreas and stomach were investigated. The results demonstrated that the specimens from animals in control group presented only weak immunohistological staining for CB1 and CB2 receptors in the pancreas, whereas specimens from AP rats had exhibited increased expressions of CB1 and CB2 receptors. Mainly, the strong positive signs of brown dyeing clustered in the pancreatic acini (Fig. 5 A arrowheads). The upregulations of CB1 and CB2 receptors in the pancreatic tissues of AP rats were further demonstrated by western blot analysis and presented in Fig.5 B. The similar expression characteristics of CB1 and CB2 receptors 23977191 were also found in the stomach of the AP rats, as demonstrated by both immunohistological staining and western blot assay (Fig. 5 C and 5 D). The strong positive signs of brown dyeing were mainly in the gastric mucosa (Fig. 5 C, arrowheads).Results from Experiment In VitroEffect of cannabinoids on gastric pathological changes and on gastrin and somatostatin release. To investigate thelevels increased significantly as compared to those of control rats, with upsurges of 169 and 147 , respectively (in both cases, P,0.05; Fig. 4B). assays for pepsin level and [H+] were performed by using the gastric juice of AP and control rats. Both pepsin level and [H+] in the gastric juice showed a distinct increase in AP rats as comparedChanges of pepsin levels and [H+] in gastric juice of AP rats. To evaluate the changes of gastric exocrine function,effect of CB1 receptor agonist HU210 on the endocrine function of the isolated rat stomach stimulated with AP rat serum, we examined the alterations of gastrin and somatostatin levels in the venous effluent of the stomach, with or without intervention of CB1 receptor agonist HU210 and antagonist AM251. The results showed that compared to the control group, the rat stomach treated with AP serum provoked an increased gastrin release (P,0.05), but a decreased somatostatin release (P,0.05), HU210 reversed the gastrin and somatostatin changes induced by serum of AP rats (P,0.05), while AM251 did not exhibit detectable impact on the release of the two hormones (Fig. 6). AM251 on pepsin activity and [H+] in the gastric lumen effluent of the isolated rat stomach were presented in Fig. 7. Compared to the counterparts of t.