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Fluoxetine exhibits embrytoxicity. - GreenMedInfo Summary

Abstract Title:

Estimation of embryotoxic effect of fluoxetine using embryonic stem cell differentiation system.

Abstract Source:

Life Sci. 2008 Dec 19;83(25-26):871-7. Epub 2008 Oct 28. PMID: 18996131

Abstract Author(s):

Shinji Kusakawa, Junji Yamauchi, Yuki Miyamoto, Atsushi Sanbe, Akito Tanoue

Article Affiliation:

Department of Pharmacology, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya, Tokyo 157-8535, Japan.

Abstract:

AIMS: Fluoxetine is an antidepressant drug of the selective serotonin reuptake inhibitor (SSRI) class, which is commonly prescribed to treat a wide spectrum of mood disorders including depression during pregnancy and lactation. Recent studies have proposed a possible association between an increase in major malformations and the maternal use of SSRI drugs during pregnancy. Here, we assess the effects of fluoxetine using a mouse ES cell differentiation system to clarify the possible association. MAIN METHODS: Using a mouse embryonic stem (ES) cell differentiation system, we evaluated cell viability and differentiation affected by fluoxetine. KEY FINDINGS: Fluoxetine adversely affected cell viability and differentiation from undifferentiated ES cells to cardiomyocytes in a dose-dependent manner. The IC50 values of fluoxetine for ES cells and NIH-3T3 fibroblasts were 1.79 microM and 4.67 microM, respectively, and the ID50 value for ES cells was 3.79 microM. These results indicate that fluoxetine has strong toxicity evaluated by a mouse embryonic stem cell test (EST). Analysis of tissue-specific markers revealed that fluoxetine potently inhibits mesodermal development, although it promotes ectodermal differentiation in a lineage-specific manner. SIGNIFICANCE: These results using the in vitro ES cell assay system suggest a possible relationship between the teratogenicity of fluoxetine and its molecular mechanism.

Study Type : In Vitro Study

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