Sennoside A, a kind of irritant laxative isolated from rhei rhizome, causes purgative actions in the intestine, it and Sennoside B have protective effects on gastric lesion. Sennoside A also is a new dual HIV-1 inhibitor effective on HIV-1 replication.
Sennoside B, a major purgative component, has a potential utility in the treatment of proliferative diseases, through inhibiting PDGF-stimulated cell proliferation by binding to PDGF-BB and its receptor and by down-regulating the PDGFR-beta signaling pathway. It and sennoside A also possess significant gastroprotective activities .
1. Sennoside C , aloe-emodin anthrone and rhein anthrone which formed mainly by intraluminal bacterial action, synergistically exert their purgative effects on mice.
Plants containing aloin A, aloe emodin, and structurally related anthraquinones have long been used as traditional medicines and in the formulation of retail products such as laxatives, dietary supplements, and cosmetics; however, topically applied aloe emodin increases the sensitivity of skin to UV light, although aloin A is not directly photocytotoxic, but human skin fibroblasts can metabolize aloin A to aloe emodin. Aloin A and aloe emodin have antibacterial activity against Gram-positive and Gram-negative bacteria.