Antileishmanial activity of the essential oil from Tetradenia riparia obtained in different seasons

Memórias do Instituto Oswaldo Cruz

Bruna Muller Cardoso¹  Tatiane França Perles De Mello¹  Sara Negrão Lopes¹  Izabel Galhardo Demarchi¹  Daniele Stefani Lopes Lera¹  Raíssa Bocchi Pedroso¹  Diogenes Aparício Cortez¹  Zilda Cristiani Gazim¹  Sandra Mara Alessi Aristides¹  Thais Gomes Verzignassi Silveira¹  Maria Valdrinez Campana Lonardoni¹ 

关键词: Tetradenia riparia;    essential oil;    Leishmania (Leishmania) amazonensis;    antileishmanial activity;    nitric oxide;   

DOI  :  10.1590/0074-02760150290

来源: SciELO

【 摘 要 】

The herbaceous shrub Tetradenia riparia has been traditionally used to treat inflammatory and infectious diseases. Recently, a study showed that T. riparia essential oil (TrEO) obtained in summer has antileishmanial effects, although these results could be influenced by seasonal variation. This study evaluated the activity of the TrEO obtained in different seasons against Leishmania (Leishmania) amazonensis, in vitro and in vivo. The compounds in the TrEO were analysed by gas chromatography-mass spectrometry; terpenoids were present and oxygenated sesquiterpenes were the majority compounds (55.28%). The cytotoxicity and nitric oxide (NO) production were also tested after TrEO treatment. The TrEO from all seasons showed a 50% growth inhibitory concentration for promastigotes of about 15 ng/mL; at 30 ng/mL and 3 ng/mL, the TrEO reduced intracellular amastigote infection, independently of season. The TrEO from plants harvested in summer had the highest 50% cytotoxic concentration, 1,476 ng/mL for J774.A1 macrophages, and in spring (90.94 ng/mL) for murine macrophages. NO production did not change in samples of the TrEO from different seasons. The antileishmanial effect in vivo consisted of a reduction of the parasite load in the spleen. These results suggest that the TrEO has potential effects on L. (L.) amazonensis, consonant with its traditional use to treat parasitic diseases.

【 授权许可】

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