Preventive effect of hesperidin against inflammation in CD-1 mouse skin caused by tumor promoter.

Our earlier studies have shown that the flavonoid hesperidin inhibits tumor promotion in a two stage skin tumorigenesis protocol in CD-1 mice. In this study hesperidin's significant protection (p < 0.0001) against 12-0-tetradecanoylphorbol-13-acetate (TPA) induced edema in CD-1 mouse ear will be presented.

Inhibitory effect of Hesperidin on tumour initiation and promotion in mouse skin.

A flavonoid, Hesperidin was evaluated for its ability to inhibit tumour initiation by a polycyclic aromatic hydrocarbon and tumour promotion by a phorbol ester in the skin of CD-1 mice. Subcutaneous application of Hesperidin did not inhibit 7,12-dimethylbenz(a)anthracene-induced tumour initiation but did inhibit 12-O-tetradecanoyl-13-phorbol acetate-induced tumour promotion. Results provide evidence for a potential chemopreventive activity of Hesperidin.

The uranyl-chloro-substituted benzoic acid-rhodamine b-benzene extraction system.

Of the chloro-substituted benzoic acids, the 2-chloro and 2,4-dichloro compounds yield higher effective molar absorptivities than benzoic acid does in the Rhodamine B-benzene extractive spectrophotometric procedure for determination of uranium(VI). Carbonyl compounds (especially acetone) in the organic phase enhance the extraction of the ion associate. The stoichiometry of the complexes has been determined, and a method of computing the extraction constants of the ion-associates developed.