Cistanoside A possesses protective activities on CCl4 induced hepatotoxicity in mice, which is involved with increasing free radicals clearing activities, alleviating lipid-overoxidation damage, and improving respiratory chain function in mitochondria.
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Inhibition of nitric oxide by phenylethanoids in activated macrophages[Pubmed: 10913595
Nitric oxide (NO) is one of the pro-inflammatory molecules. Some phenylethanoids have been previously shown to possess anti-inflammatory effects. Seven phenylethanoids from the stems of Cistanche deserticola, viz. isoacteoside, tubuloside B, acteoside, 2'-O-acetylacteoside, echinacoside, Cistanoside A and tubuloside A, were tested for their effect on NO radical generation by activated murine macrophages. At the concentration of 100-200 microM, all the phenylethanoids reduced (6.3-62.3%) nitrite accumulation in lipopolysaccharide (0.1 microgram/ml)-stimulated J774.1 cells. At 200 microM, they inhibited by 32.2-72.4% nitrite accumulation induced by lipopolysaccharide (0.1 microgram/ml)/interferon-gamma (100 U/ml) in mouse peritoneal exudate macrophages. However, these compounds did not affect the expression of inducible nitric oxide (iNOS) mRNA, the iNOS protein level, or the iNOS activity in lipopolysaccharide-stimulated J774.1 cells. Instead, they showed a clear scavenging effect (6.9-43.9%) at the low concentrations of 2-10 microM of about 12 microM nitrite generated from an NO donor, 1-propanamine-3-hydroxy-2-nitroso-1-propylhydrazino (PAPA NONOate). These results indicate that the phenylethanoids have NO radical-scavenging activity, which possibly contributes to their anti-inflammatory effects.
Latin American Journal of Pharmacy; 2012 vol. 31, no. 3
Protective Activities of Cistanoside A on CCl4 Induced Hepatotoxicity in Mice[Reference: WebLink
METHODS AND RESULTS:
To evaluate the protective efficacy of Cistanoside A (C.A), a phenylethanol glycoside isolated from Cistanche deserticola, on CCl4 induced hepatotoxicity in mice, 50 animals were divided into five different protocols, and hepatic functional index were detected by diagnostic kits.To confirm the effect of Cistanoside A on free radical, tests on the free radical scavenging activities were also carried out in vitro. We found treatment with Cistanoside A (10, 20 mg/kg o.p. for 7 days) could signiﬁcantly ameliorated the levels of hepatic function indices (AST, ALT, ALP and LDH) (P < 0.05). The biochemical results were also conﬁrmed by histopathological examination. Cistanoside A treatment decreased the ballooning degeneration, moderated the hepatocytes apoptosis, and alleviated centrilobular and bridging necrosis which were observed in the CCl4 control group. Following experiments revealed that Cistanoside A could increase the activities of mitochondrial antioxidant enzymes (GST, SOD, and CAT) and respiratory marker enzymes (MDH, SDH, NADH dehydrogenase, and cytochrome c oxidases) (P < 0.05). In vitro, Cistanoside A exhibited strong scavenging activities for DPPH radical and superoxide anion radical.
Our results revealed that Cistanoside A possess protective activities on CCl4 induced hepatotoxicity in mice, which was involved with increasing free radicals clearing activities, alleviating lipid-overoxidation damage, and improving respiratory chain function in mitochondria.