Effect of dietary ascorbic acid on the incidence of spontaneous mammary tumors in RIII mice

A study of the effect of different amounts of L-ascorbic acid (vitamin C), between 0.076% and 8.3%, contained in the food has been carried out with ten groups of RIII mice (seven ascorbic acid and three control groups), with 50 mice in each group. With an increase in the amount of ascorbic acid ther...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 1985-08, Vol.82 (15), p.5185-5189
Main Authors: Pauling, L, Nixon, J.C, Stitt, F, Marcuson, R, Dunham, W.B, Barth, R, Bensch, K, Herman, Z.S, Blaisdell, B.E, Tsao, C, Prender, M, Andrews, V, Willoughby, R, Zuckerkandl, E
Format: Article
Language:English
Subjects:
ACIDE ASCORBIQUE
ACIDO ASCORBICO
Animal tumors. Experimental tumors
Animals
ASCORBIC ACID
Ascorbic Acid - therapeutic use
Biological and medical sciences
Body Weight
Cancer
Control groups
DIET
DIETA
Energy Intake
Female
Food
Food intake
GLANDE MAMMAIRE
GLANDULAS MAMARIAS
MAMMARY GLANDS
Mammary Neoplasms, Experimental - pathology
Mammary Neoplasms, Experimental - prevention & control
Medical sciences
MICE
Mite Infestations - complications
Neoplasia
NEOPLASMAS
NEOPLASME
NEOPLASMS
RATON
REGIME ALIMENTAIRE
SOURIS
Spontaneous animal tumors
Statistics as Topic
Tumors
Vitamin C
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Summary:A study of the effect of different amounts of L-ascorbic acid (vitamin C), between 0.076% and 8.3%, contained in the food has been carried out with ten groups of RIII mice (seven ascorbic acid and three control groups), with 50 mice in each group. With an increase in the amount of ascorbic acid there is a highly significant decrease in the first-order rate constant for appearance of the first spontaneous mammary tumor after the lag time to detection by palpation. There is also an increase in the lag time. The mean body weight and mean food intake were not significantly different for the seven ascorbic acid groups. Striking differences were observed between the 0.076% ascorbic acid and the control groups (which synthesize the vitamin): smaller food intake, decreased lag time, and increased rate constant of appearance of the first mammary tumor. This comparison cannot be made experimentally for guinea pigs and primates because the control groups would develop scurvy.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.82.15.5185