Modulation of arsenic induced cytotoxicity by tea.
Artigo
em Inglês
| IMSEAR
| ID: sea-37368
ABSTRACT
Arsenic, a naturally ocurring chemical element, is considered hazardous to human health. Inorganic arsenic compounds were found to induce cytotoxicity in Chinese hamster V-79 cells in culture. The arsenite form was more toxic than arsenate. Extracts of green and two varieties of black tea, as well as their principal polyphenols, (-)-epigallocatechingallate and theaflavin, efficiently counteracted the cytotoxic effects of arsenic compounds. On the basis of the amount of tea extract that afforded 50% protection to the cells from arsenic induced cytotoxicity, black tea was found to be as effective as green tea. The protective effect was attributable to the contents of not only (-)-epigallocatechingallate but also of theaflavin, the latter being a predominant polyphenol present in black tea.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Arsênio
/
Chá
/
Masculino
/
Cricetulus
/
Cricetinae
/
Quimioprevenção
/
Citotoxinas
/
Linhagem Celular Tumoral
/
Animais
Idioma:
Inglês
Ano de publicação:
2003
Tipo de documento:
Artigo
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