Title : Protection by dimethylthiourea against retinal light damage in rats.

Pub. Date : 1992 Apr

PMID : 1559759






5 Functional Relationships(s)
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1 For rats reared in the weak cyclic light environment, DMTU (two injections) provided complete protection against rhodopsin loss after intense light exposures of up to 16 hr. 1,3-dimethylthiourea rhodopsin Rattus norvegicus
2 Only 15% rhodopsin loss was found in cyclic-light DMTU-treated rats after 24 hr of intermittent or continuous light. 1,3-dimethylthiourea rhodopsin Rattus norvegicus
3 For rats reared in darkness, DMTU treatment resulted in a rhodopsin loss of less than 20% after 8-16 hr of continuous light and approximately 40% after similar exposure to intermittent light. 1,3-dimethylthiourea rhodopsin Rattus norvegicus
4 Irrespective of the type of light exposure, rhodopsin loss in the dark-reared DMTU-treated rats was nearly identical to that found in uninjected cyclic light-reared animals. 1,3-dimethylthiourea rhodopsin Rattus norvegicus
5 As measured by rhodopsin levels 2 weeks later, DMTU was most effective when given as two doses administered 24 hr before and just before intense light exposure. 1,3-dimethylthiourea rhodopsin Rattus norvegicus