运用单向灌流模型研究莪术油中三成分对大鼠在体肠的吸收

目的研究莪术油中三成分对大鼠在体肠的吸收情况。方法运用单向灌流模型并采用HPLC法(配备二极管阵列检测器)同时测定莪术油中三成分在灌流液中的浓度。结果灌流液中莪术油浓度为0.4,0.8和1.2 mg·mL^-1时,莪术醇、莪术二酮和吉玛酮表观吸收系数均较低,且均无显著性差异(P>0.05),各肠段的表观吸收系数也无显著性差异(P>0.05);吉玛酮和莪术二酮二者在体肠吸收情况无显著性差异(P>0.05),但均高于莪术醇,且存在显著性差异(P<0.01)。结论灌流液中莪术油在0.4-1.2 mg·mL^-1时,三成分的吸收无自身浓度抑制作用,在肠黏膜的转运均为被动扩散过程,且三成分无特殊的吸收窗。

Absorption of zedoary oil in rat intestine using in situ single pass perfusion model

AIM: To study the absorption of zedoary oil in intestine of rat. METHODS: In situ single pass perfusion model was used and the concentrations of three components in perfusate were determined by HPLC in combination with diode array detection. RESULTS: The P(app) s of curcumol, curdione and germacrone were all low and had no significant difference (P > 0.05) at zedoary oil concentration of 0.4, 0.8 and 1.2 mg x mL(-1) in transmucosal fluid or in four different regions of intestine of rat [duodenum, jejunum, ileum, colon]. The absorption rates of germacrone and curdione were faster than curcumol's in this study. CONCLUSION: The zedoary oil concentration in transmucosal fluid had no significant effect on the P(app) s within the scope of 0.4-1.2 mg x mL(-1). The absorption of curcumol, curdione and germacrone showed the passive diffusion process, and didn't contain a special absorption window.