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XB-ART-32252
Science 1977 May 06;1964290:664-6.
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Cyclic GMP accumulation causes degeneration of photoreceptor cells: simulation of an inherited disease.

Lolley RN , Farber DB , Rayborn ME , Hollyfield JG .


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Guanosine 3',5'-monophosphate (cyclic GMP) metabolism in developing eye rudiments of Xenopus laevis embryos in culture is disrupted by the phosphodiesterase inhibitor isobutylmethylxanthine. At low concentrations of inhibitor the rudiments develop normally, but at higher concentrations of the inhibitor, cyclic GMP accumulates in the rudiments and the retinal photoreceptor cells degenerate selectively. The isobutylmethylxanthine-induced photoreceptor degeneration is associated with an accumulation of cyclic GMP and, in this respect, it stimulates an early biochemical defect in the inherited degenerative disease of rd mice.

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