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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Huang, Hai Shan Han, Xiang Hua Hwang, Bang Yeon Park, Jae In Yoo, Se Kuel Lee, Hak Ju Lim, Sung Cil Lee, Myung Koo |
| Description | Author Affiliation: Huang HS ( College of Pharmacy, Chungbuk National University, Cheongju 361-763, Republic of Korea.) |
| Abstract | The effects of catalpalactone on dopamine biosynthesis and L-DOPA-induced cytotoxicity in PC12 cells were investigated. Catalpalactone at 5-30µM decreased intracellular dopamine content with the IC(50) value of 22.1µM. Catalpalactone at 5-20µM, but not 30µM, did not alter cell viability. Catalpalactone at 20µM inhibited tyrosine hydroxylase (TH) and aromatic-l-amino acid decarboxylase (AADC) activities. Catalpalactone also decreased cyclic AMP levels and inhibited TH phosphorylation. In addition, catalpalactone at 20µM reduced the increases in dopamine levels induced by L-DOPA (20-50µM). Catalpalactone (5-30µM) associated with L-DOPA (50-100µM) enhanced L-DOPA-induced cytotoxicity at 48h, which was prevented by N-acetyl-l-cysteine. These results suggest that catalpalactone inhibited dopamine biosynthesis by reducing TH and AADC activities and enhanced L-DOPA-induced cytotoxiciy in PC12 cells. |
| File Format | HTM / HTML |
| ISSN | 13826689 |
| Issue Number | 1 |
| Journal | Environmental Toxicology and Pharmacology |
| Volume Number | 26 |
| e-ISSN | 18727077 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-07-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Health Discipline Pharmacology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Medicine Toxicology Pharmacology |
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