| Autor: |
Negreiros HA; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil., Fontele SBC; Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Brazil., Batista FA; Department of Biophysics and Physiology, Laboratory of Experimental Cancerology (LabCancer), Federal University of Piauí, Teresina, Brazil., Farias MG; Department of Nutrition, Federal University of Piauí, Teresina, Brazil., Silva FCCD; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil., Nascimento MLLBD; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil., Moura KG; Department of Nutrition, Federal University of Piauí, Teresina, Brazil., Correa LS; Department of Nutrition, Federal University of Piauí, Teresina, Brazil., Pereira ARS; Department of Nutrition, Federal University of Piauí, Teresina, Brazil., Lopes LO; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil., Ferreira PMP; Department of Biophysics and Physiology, Laboratory of Experimental Cancerology (LabCancer), Federal University of Piauí, Teresina, Brazil.; Postgraduation Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil., Mendes AN; Department of Biophysics and Physiology, Laboratory of Experimental Cancerology (LabCancer), Federal University of Piauí, Teresina, Brazil.; Postgraduation Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil., Gonçalves JCR; Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa, Brazil., Melo-Cavalcante AAC; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil., Sousa JMCE; Postgraduation Program in Pharmaceutical Sciences, Laboratory of Research in Toxicological Genetics (LAPGENIC), Federal University of Piauí, Teresina, Brazil.; Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina, Brazil.; Postgraduation Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil. |
| Abstrakt: |
Alpha-terpineol is a monoterpene alcohol found in essential oils from medicinal plants with some well-known pharmacological activities and widely used in cosmetics. However, the toxicological effects and additional pharmacological activities need to be clarified. Thus, the study evaluated the toxic, cytotoxic, genotoxic, hemolytic, and oxidative potential of alpha-terpineol in non-clinical bioassays. Different concentrations of alpha-terpineol were used in bioassays, including MTT (50, 100, 200, and 400 μg/mL), Artemia salina (6.25-400 μg/mL), Allium cepa (10, 50, and 100 μg/mL), comet assay (100, 200, and 500 μg/mL), cytokinesis-block micronucleus (100, 250, and 500 μg/mL), confocal microscopy for apoptosis quantification (100 and 500 μg/mL), hemolysis and Saccharomyces cerevisiae central disk test (10, 35, and 75 μg/mL). For the MTT test, alpha-terpineol was more cytotoxic on melanoma murine B16-F10 cells rather than macrophages. For A. salina test, alpha-terpineol showed LC 50 of 68.29 and 76.36 μg/mL for 24 h and 48 h of exposure time, respectively. Meanwhile, alpha-terpineol was also cytotoxic to meristematic cells, which revealed inhibition of cellular division and mutagenic action by formation of bridges and delayed anaphases. The compound increased damage index and frequency of damage corroborated by the presence of micronuclei, bridges and nuclear buds at 500 μg/mL, but it caused neither hemolysis, oxidative damage on the S. cerevisiae nor cell death in normal fibroblasts. The findings indicate alpha-terpineol has cytotoxic potential by cytogenetic and molecular mechanisms associated with apoptosis and probable target effects against melanoma cells. |
