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El extracto acuoso de Phyllanthus orbicularis K protege al ADN plasmídico del daño inducido por las radiaciones ultravioletas

Authors: Vernhes, M.; González-Pumariega, M.; Passaglia, A.; Martins, F. C.; Sánchez-Lamar, A.;

El extracto acuoso de Phyllanthus orbicularis K protege al ADN plasmídico del daño inducido por las radiaciones ultravioletas

Abstract

Objetivo: Evaluar el efecto protector del extracto acuoso de Phyllanthus orbicularis, K ante el daño inducido por las radiaciones UVB y UVC. Material y métodos: Se empleó el ensayo con ADN plasmídico (pBluescript SK II) libre de célula. Se evaluó la capacidad del extracto acuoso de P. orbicularis de inducir roturas de cadenas en el plásmido, a las concentraciones 0,0001-2,0 mg/ml. Se realizaron estudios de protección del extracto frente a las radiaciones UVB y UVC a las concentraciones de 0,1-2,0 mg/ml. Se cuantificó la transmitancia del extracto frente ambos tipos de radiaciones. Resultados: Ninguna de las concentraciones evaluadas resultó genotóxica en 30 min de exposición. Las concentraciones ≥ 1 mg/ml de P. orbicularis sí indujeron roturas de cadenas a tiempos mayores de evaluación. El extracto de P. orbicularis protegió al ADN frente a las radiaciones UVB y UVC a concentraciones ≥ 0,1 mg/ml y 0,5 mg/ml respectivamente. Conclusiones: En nuestras condiciones experimentales, el extracto acuoso de P.orbicularis protege al ADN frente al daño inducido por las radiaciones UV.

Aim: The aim of this work was to evaluate the protective effect of aqueous extract of Phyllanthus orbicularis, K from the damage induced by UV radiation. Material and methods: The plasmid-based non cellular system was used. The extract capacity to induce DNA strand breaks was evaluated at 0.0001- 2.0 mg/ml concentrations. The protective effect of extract against UVB and UVC radiation was evaluated at 0.1- 2.0 mg/ml concentrations. The transmittance of extract was measured for both UV radiations. Results: The P. orbicularis aqueous extract was not genotoxic even after 30 min of exposure. Concentrations ≥ 1 mg/ml of extract induced strand breaks at major times of exposition. P.orbicularis extract protected DNA against UVB and UVC radiation at concentrations ≥ 0.1 mg/ml and 0.5 mg/ml respectively. Conclusions: In our experimental conditions, P.orbicularis aqueous extract protects DNA from damage induced by UV radiation.

Este trabajo fue realizado por el proyecto de colaboración internacional CAPES (Brasil)- MES (Cuba).El financiamiento y soporte fue brindado por CAPES (São Paulo, Brazil), FAPESP (São Paulo, Brazil) y CNPq (Brasília, Brazil).

AGRADECIMIENTOS Agradecemos a la Dr. Rosalina Berazain por la autenticación de las especies Phyllanthus orbicularis K colectadas.

Country
Spain
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Keywords

Photoprotection, Phyllanthus orbicularis, Eextracto vegetal, Pyrimidine dimers, Fotoprotección, Vegetal extract, Dímero de pirimidina, UV

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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