mitochondria superoxide anion production contributes to geranylgeraniol-induced death in leishmania amazonensis
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ID: 223032
2012
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Abstract
Here we demonstrate the activity of geranylgeraniol, the major bioactive constituent from seeds of Bixa orellana, against Leishmania amazonensis. Geranylgeraniol was identified through 1H and 13C nuclear magnetic resonance imaging and DEPT. The compound inhibited the promastigote and intracellular amastigote forms, with IC50 of 11±1.0 and 17.5±0.7 μg/mL, respectively. This compound was also more toxic to parasites than to macrophages and did not cause lysis in human blood cells. Morphological and ultrastructural changes induced by geranylgeraniol were observed in the protozoan by electronic microscopy and included mainly mitochondria alterations and an abnormal chromatin condensation in the nucleus. These alterations were confirmed by Rh 123 and TUNEL assays. Additionally, geranylgeraniol induces an increase in superoxide anion production. Collectively, our in vitro studies indicate geranylgeraniol as a selective antileishmanial that appears to be mediated by apoptosis-like cell death.
| Reference Key |
lopes2012evidence-basedmitochondria
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|---|---|
| Authors | ;Milene Valéria Lopes;Vânia Cristina Desoti;Angelo de Oliveira Caleare;Tânia Ueda-Nakamura;Sueli Oliveira Silva;Celso Vataru Nakamura |
| Journal | ACS applied materials & interfaces |
| Year | 2012 |
| DOI |
10.1155/2012/298320
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| URL | |
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