Abstract:
ETHNOPHARMACOLOGICAL RELEVANCE:Wan-Sheng-Hua-Feng-Dan (WSHFD) is a traditional Chinese medicine used for the treatment of neurological disorders. Cinnabar (HgS) and realgar (As(4)S(4)) are included in WSHFD. Are they remedies or poisons? AIM OF STUDY:To investigate the role of cinnabar and realgar in the protective effects of WSHFD on lipopolysaccharide (LPS)-induced neurotoxicity. MATERIALS AND METHODS:Rat primary midbrain neuron-glia cultures were used to explore the effects of WSHFD on LPS-induced dopamine (DA) neurodegeneration. The experiment was randomly divided into control, LPS, LPS+removed (cinnabar and realgar in WSHFD were removed), LPS+reduced (cinnabar and realgar in WSHFD were reduced by 65%) and LPS+original (10% cinnabar and 10% realgar in WSHFD) groups. Dopaminergic neurotoxicity was assessed by [(3)H]DA uptake assay and the quantification of tyrosine hydroxylase (TH)-positive neurons. Microglial activation was evaluated using an anti-OX-42 antibody. The release of intracellular reactive oxygen species (ROS) was quantified via the DCFH-DA probe. The transcripts and production of pro-inflammatory factors were examined by real-time RT-PCR analysis and ELISA, respectively. RESULTS:WSHFD (original) significantly attenuated LPS-induced decrease of DA uptake capacity and TH-positive neuron number, inhibited microglial activation, decreased LPS-induced ROS production, ameliorated LPS-induced elevations of the mRNA expressions of TNFα, iNOS, IL-1β and COX-2 and the subsequent production of TNFα, NO, IL-1β and PGE(2) in neuron-glia cultures. However, WSHFD (removed) and (reduced) failed to protect against LPS-induced neurotoxicity. CONCLUSION:Cinnabar and realgar were active ingredients of WSHFD in producing protective effects against LPS-induced neurotoxicity.
journal_name
J Ethnopharmacoljournal_title
Journal of ethnopharmacologyauthors
Zhang F,Lu Y,Wu Q,Yan J,Shi J,Liu Jdoi
10.1016/j.jep.2011.12.026subject
Has Abstractpub_date
2012-02-15 00:00:00pages
822-8issue
3eissn
0378-8741issn
1872-7573pii
S0378-8741(11)00904-4journal_volume
139pub_type
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