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Abstract Title:

Silybin, a new iron-chelating agent.

Abstract Source:

Fitoterapia. 2004 Jun;75(3-4):375-7. PMID: 11410232

Abstract Author(s):

M Borsari, C Gabbi, F Ghelfi, R Grandi, M Saladini, S Severi, F Borella

Abstract:

Silybin, a natural occurring flavolignan isolated from the fruits of Silibum marianum, has been reported to exert antioxidant and free radical scavenging abilities. It was suggested to act also as an iron chelator. The complexation and protonation equilibria of the ferric complex of this compound have been studied by potentiometric, spectrophotometric and electrochemical techniques. The formation of the complex silybin-Ga(III) in anhydrous DMSO-d6 has been studied by 1H NMR spectroscopy. Mass spectrometry and infrared spectroscopy on silybin-Fe(III) complex confirm all data obtained by 1H NMR spectroscopy. The experimental results show that silybin binds Fe(III) even at acidic pH. Different ternary complexes were observed at increasing methoxide ion concentration and their stability constants have been calculated. The results show the possible role of silybin in relation to the chelation therapy of chronic iron overload, as occurs in the treatment of Cooley's anemia.

Study Type : In Vitro Study

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Sayer Ji
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