Phytomedicine
Volume 17, Issue 3 , Pages 289-291, March 2010

Monoamine levels in rat striatum after acute intraperitoneal injection of strictosidinic acid isolated from Psychotria myriantha Mull. Arg. (Rubiaceae)

  • Farias F.M.

      Affiliations

    • Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
  • ,
  • Passos C.S.

      Affiliations

    • Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
  • ,
  • Arbo M.D.

      Affiliations

    • Laboratório de Toxicologia, Departamento de Análises, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul., Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
  • ,
  • Zuanazzi J.A.S.

      Affiliations

    • Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
  • ,
  • Steffen V.M.

      Affiliations

    • Laboratório de Toxicologia, Departamento de Análises, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul., Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
  • ,
  • Henriques A.T.

      Affiliations

    • Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul. Av. Ipiranga, 2752, CEP 90610-000 Porto Alegre, RS, Brazil
    • Corresponding Author InformationCorresponding author. Tel.: +555133085417; fax: +555133085437.

published online 24 July 2009.

Abstract 

Strictosidinic acid 10mg/kg, isolated from Psychotria myriantha leaves, were administered intraperitoneally to Wistar male rats (n=5-6). After 60minutes, striatum was dissected, homogenized and injected onto HPLC-ED chromatographic system. It was observed a 28.7% reduction in the 5-HT levels followed up by an increase of 5-HIAA levels (29.4%). Furthermore there was a decrease of 8.0% in DA levels and an increase in the levels of metabolites DOPAC (21.5%) and HVA (52.5%). The results indicate that strictosidinic acid has a promising effect in the central nervous system, justifying more studies about the central actions of Psychotria compounds.

Keywords: Psychotria myriantha, Strictosidinic acid, Monoamine levels, Striatum

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PII: S0944-7113(09)00130-5

doi:10.1016/j.phymed.2009.05.008

Phytomedicine
Volume 17, Issue 3 , Pages 289-291, March 2010