Anti-inflammatory activity of the aqueous extract from Rhizoma smilacis glabrae.
Our previous paper has reported that the aqueous extract from Rhizoma smilacis glabrae (RSG) (RSG ext) selectively inhibited the effector phase of delayed-type hypersensitivity (DTH) without suppressing humoral immune response. In the present study, a remarkable inhibitory activity was exhibited by the extract against both primary and secondary hind paw swelling of adjuvant arthritis in rats. RSG ext also significantly reduced the inflammatory edema induced by carrageenan in either naive or bilaterally adrenalectomized rats, suggesting the independence of the anti-inflammatory action on the function of pituitary-adrenal axis. The PGE2 content in the carrageenan-induced inflammatory tissue was also decreased remarkably by the extract. Furthermore, RSG ext showed a distinct inhibition on the formation of cotton-induced granuloma formation. However, as compared with a steroidal agent, prednisolone, the extract did not affect the vitamin C content in adrenal gland as well as the weights of some organs. These results suggest that RSG ext may act as a therapeutic agent of immunoinflammatory diseases through a selective suppression on the cellular immune response involved in inflammations as well as through a direct anti-inflammatory mechanism including inhibiting PGE2.
Jiang
J
J
Department of Pharmacology for Chinese Materia Medica, China Pharmaceutical University, Nanjing, People's Republic of China.
Wu
F
F
Lu
J
J
Lu
Z
Z
Xu
Q
Q
D000311:Adrenal Glands / Q000033:anatomy & histology / Q000187:drug effects / Q000378:metabolism; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use*; D001169:Arthritis, Experimental / Q000188:drug therapy; D001205:Ascorbic Acid / Q000378:metabolism; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D005260:Female; D015745:Granuloma, Foreign-Body / Q000188:drug therapy; D019668:Liliaceae / Q000627:therapeutic use*; D008297:Male; D009929:Organ Size / Q000187:drug effects; D008517:Phytotherapy; D010936:Plant Extracts / Q000627:therapeutic use; D051381:Rats; D017207:Rats, Sprague-Dawley; D013154:Spleen / Q000033:anatomy & histology / Q000187:drug effects; D013950:Thymus Gland / Q000033:anatomy & histology / Q000187:drug effects
D000893:Anti-Inflammatory Agents; D004365:Drugs, Chinese Herbal; D010936:Plant Extracts; D001205:Ascorbic Acid