Relationship between the antidiarrhoeal effects of Hange-Shashin-To and its active components.
This study was designed to examine the relationship between the antidiarrhoeal effects of Hange-Shashin-To (TJ-14) and its active components. Oral treatment with TJ-14 at 1000 mg/kg significantly inhibited castor oil-induced diarrhoea. Both the 50% methanol eluate fraction (fraction III) and the methanol eluate fraction (fraction IV) showed antidiarrhoeal effects at oral doses of 68 mg/kg and 63 mg/kg, respectively, corresponding to 1000 mg/kg of TJ-14. TJ-14 (1000 mg/kg, p.o.) showed a significant increase in blood corticosterone levels. Increased blood corticosterone was noted after the oral administration of 63 mg/kg of fraction IV. The inhibitory activity of TJ-14 on cyclooxygenase-2 (COX-2) was also observed in fractions III and IV. The main component of fraction III was Scutellariae Radix-derived baicalin. Fraction IV contained Glycyrrhizae Radix-derived glycyrrhizin and isoliquiritin, Coptidis Rhizoma-derived berberine, coptisine and palmitine. Ginseng Radix-derived saponins were also present in fraction IV. These compounds inhibited castor-oil induced diarrhoea at oral doses of 10 or 30 mg/kg. Thus, the present results indicate that Scutellariae Radix, Glycyrrhizae Radix, Ginseng radix and Coptidis Rhizoma-derived components are involved in the antidiarrhoeal action of TJ-14.
Kase
Y
Y
Kampo and Pharmacognosy Laboratory, Central Research Laboratories, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan.
Saitoh
K
K
Makino
B
B
Hashimoto
K
K
Ishige
A
A
Komatsu
Y
Y
D000818:Animals; D000930:Antidiarrheals / Q000494:pharmacology*; D002368:Castor Oil; D003345:Corticosterone / Q000097:blood / Q000494:pharmacology; D051546:Cyclooxygenase 2; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors / Q000494:pharmacology; D003967:Diarrhea / Q000139:chemically induced / Q000517:prevention & control*; D007213:Indomethacin / Q000494:pharmacology; D007527:Isoenzymes / Q000378:metabolism; D007564:Japan; D008139:Loperamide / Q000494:pharmacology; D008297:Male; D020835:Medicine, Kampo; D051379:Mice; D008813:Mice, Inbred ICR; D010936:Plant Extracts / Q000494:pharmacology*; D011451:Prostaglandin-Endoperoxide Synthases / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar
D000930:Antidiarrheals; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors; D007527:Isoenzymes; D010936:Plant Extracts; D008139:Loperamide; D002368:Castor Oil; D051546:Cyclooxygenase 2; D011451:Prostaglandin-Endoperoxide Synthases; D003345:Corticosterone; D007213:Indomethacin