Abstract:
:Catalpol is a natural iridoid glycoside with diverse bioactivities that is found in abundance in Rehmannia glutinosa Libosch. (Scrophulariaceae). The present study assessed whether catalpol treatment (5, 10, or 20 mg/kg for 14 days by intragastric administration (i.g.)) has an antidepressant-like effect on mice performing the forced swim test (FST), tail suspension test (TST), open field test (OFT), and tests for reversal of reserpine-induced ptosis, akinesia, and hypothermia. This study also examined the potential role that catalpol plays in the cerebral monoaminergic system. Results indicated that catalpol administration produced an antidepressant-like effect in mice, as indicated by the reduced duration of immobility in the FST and TST, but it had no effect on locomotor activity in the OFT. Catalpol treatment significantly counteracted the decrease in rectal temperature, akinesia, and eyelid ptosis induced by reserpine. Moreover, catalpol increased levels of serotonin (5-HT) and its metabolite 5-hydroxyindoleacetic acid (5-HIAA) in the brains of mice, but it did not affect levels of norepinephrine (NE) or dopamine (DA). These antidepressant-like effects of catalpol are essentially similar to the effects of the clinical antidepressant fluoxetine hydrochloride (FH). This is the first study to indicate that catalpol has an antidepressant-like effect and that its action may be mediated by the central serotonergic system, and not by noradrenergic or dopaminergic systems.
journal_name
Biosci Trendsjournal_title
Bioscience trendsauthors
Wang J,Cui Y,Feng W,Zhang Y,Wang G,Wang X,Zhou Gdoi
10.5582/bst.2014.01029subject
Has Abstractpub_date
2014-10-01 00:00:00pages
248-52issue
5eissn
1881-7815issn
1881-7823pii
DN/JST.JSTAGE/bst/2014.01029journal_volume
8pub_type
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