The kynurenine metabolic pathway in the eye: studies on 3-hydroxykynurenine, a putative cataractogenic compound.
FEBS Lett
; 453(1-2): 197-200, 1999 Jun 18.
Article
em En
| MEDLINE
| ID: mdl-10403402
ABSTRACT
The rabbit lens has an elevated content of 3-hydroxykynurenine (30HKYN) in spite of a very low activity of the enzymes leading to its synthesis. The iris/ciliary body, on the contrary, has very high activity of 30HKYN synthesizing enzymes but a content of 30HKYN lower than that of the lens. These observations suggest that 30HKYN is formed in the iris/ ciliary body, released into the aqueous humor and then taken up into the lens where it may be used for the synthesis of UV filtering products. An excessive accumulation of 30HKYN in the lens has been associated with cataract formation. We found that available selective inhibitors of kynurenine hydroxylase reduced 30HKYN synthesis in both the lens and the iris/ciliary body.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Catarata
/
Olho
/
Cinurenina
/
Liases
Limite:
Animals
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
1999
Tipo de documento:
Article
País de afiliação:
Itália