Sustained leves of ascorbic acid are toxic and immunosuppressive for human T cells
P. R. health sci. j
; 15(1): 21-6, mar. 1996. tab, graf
Article
en En
| LILACS
| ID: lil-212510
Biblioteca responsable:
BR1.1
ABSTRACT
Ascorbate (vitamin C) can protect from oxidative damage to DNA and lipids that may lead to aging, cancer, and other dysfunctions. However, we find that purified human T cells deteriorate if maintained in ascorbate in culture for 18 hrs. or more; viability and Il-2 synthesis are over 90 percent curtailed by scorbate at 50 micrograms/ml. T cell proliferation and adhesion are severely suppressed at 10-25 micrograms/ml. Dihydro-ascorbate was much less toxic or suppressive. The suppressive effect of ascorbate appears irreversible, since removal of ascorbate after 18 hrs. did not restore the mitogenic response. Although moderate dietary levels of ascorbate often reach 250-1000 mg or more daily and appear beneficial, our data caution against sustained megadoses of ascorbate for treatment of patients with AIDS and cancer
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Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Ácido Ascórbico
/
Linfocitos T
Límite:
Humans
Idioma:
En
Revista:
P. R. health sci. j
Asunto de la revista:
MEDICINA
Año:
1996
Tipo del documento:
Article
Pais de publicación:
Puerto Rico