RGD Reference Report - Catalponol enhances dopamine biosynthesis and protects against L-DOPA-induced cytotoxicity in PC12 cells. - Rat Genome Database

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Catalponol enhances dopamine biosynthesis and protects against L-DOPA-induced cytotoxicity in PC12 cells.

Authors: Huang, HS  Han, XH  Hwang, BY  Park, JI  Yoo, SK  Choi, HS  Lim, SC  Lee, MK 
Citation: Huang HS, etal., J Asian Nat Prod Res. 2009 Oct;11(10):867-75.
RGD ID: 5128866
Pubmed: PMID:20183248   (View Abstract at PubMed)
DOI: DOI:10.1080/10286020903193094   (Journal Full-text)

The effects of catalponol (1) on dopamine biosynthesis and L-DOPA-induced cytotoxicity in PC12 cells were investigated. Catalponol at concentration ranges of 1-5 microM increased the intracellular levels of dopamine at 12-48 h. Catalponol at concentrations of up to 10 microM did not alter cell viability. Tyrosine hydroxylase (TH) activity was enhanced by 1 at 3 microM in a time-dependent manner, but aromatic L-amino acid decarboxylase activity was not. Catalponol also increased the intracellular levels of cyclic AMP and TH phosphorylation. In addition, catalponol at 3 microM associated with L-DOPA (20-50 microM) further enhanced the increases in dopamine levels induced by L-DOPA (50-100 microM) at 24 h. Catalponol at 2-5 microM inhibited L-DOPA (100-200 microM)-induced cytotoxicity at 48 h. These results suggest that 1 enhanced dopamine biosynthesis by inducing TH activity and protected against L-DOPA-induced cytotoxicity in PC12 cells, which was mediated by the increased levels of cyclic AMP.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
glycoside metabolic process  IEP 5128866catalponolRGD 

Objects Annotated

Genes (Rattus norvegicus)
Th  (tyrosine hydroxylase)


Additional Information