canthaxanthin/atrophy

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Canthaxanthin retinopathy. An investigation by light and electron microscopy and physicochemical analysis.

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The eyes of a patient with canthaxanthin retinopathy were obtained at autopsy and examined by light and electron microscopy. Various tissues of one eye were also studied by physicochemical methods. Morphologically, there were red, birefringent, lipid-soluble crystals in the inner layers of the

[Canthaxanthin retinopathy].

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The authors examined 32 patients with light-dermatosis or vitiligo who were being treated with orally administered Canthaxanthin and betacarotene. Eight had crystalline retinopathy with typical "gold dust" particles in the inner retinal layers, forming a band-shaped zone around the macula and, in

Astaxanthin analogs, adonixanthin and lycopene, activate Nrf2 to prevent light-induced photoreceptor degeneration.

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Carotenoids, in particular astaxanthin, possess potent antioxidant capabilities. Astaxanthin also induces NF-E2-related factor 2 (Nrf2), which plays a major regulatory role in the antioxidative response. However, little is known whether the carotenoid, by-products of astaxanthin, activate Nrf2.

Effect of domestic cooking methods on egg yolk xanthophylls.

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Xanthophylls are a class of bioactive compounds known to play an important role in preventing age-related macular degeneration. Egg yolk is a rich source of highly bioavailable xanthophylls including lutein and zeaxanthin. The effects of domestic cooking methods (boiling, frying, microwaving) on egg

Modern Breeding and Biotechnological Approaches to Enhance Carotenoid Accumulation in Seeds.

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There is an increasing demand for carotenoids, which are fundamental components of the human diet, for example as precursors of vitamin A. Carotenoids are also potent antioxidants and their health benefits are becoming increasingly evident. Protective effects against prostate cancer and age-related

Ligand-binding characterization of xanthophyll carotenoids to solubilized membrane proteins derived from human retina.

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The macula of the human retina contains extraordinarily high concentrations of lutein and zeaxanthin, xanthophyll carotenoids that appear to play an important role in protecting against age-related macular degeneration, the leading cause of blindness among the elderly. It is likely that the uptake

Microbial xanthophylls.

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Xanthophylls are oxygenated carotenoids abundant in the human food supply. Lutein, zeaxanthin, and cryptoxanthin are major xanthophyll carotenoids in human plasma. The consumption of these xanthophylls is directly associated with reduction in the risk of cancers, cardiovascular disease, age-related

Carotenoid content of chlorophycean microalgae: factors determining lutein accumulation in Muriellopsis sp. (Chlorophyta).

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Fifteen strains of chlorophycean microalgae have been investigated with regard to their carotenoid profile. Lutein, beta-carotene and violaxanthin were present in virtually all of the strains, lutein, in general, being the most abundant carotenoid, whereas canthaxanthin and astaxanthin were found in

Xanthophylls in commercial egg yolks: quantification and identification by HPLC and LC-(APCI)MS using a C30 phase.

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The xanthophylls lutein and zeaxanthin have attracted a lot of interest since it was presumed that an increased nutritional uptake may prevent adult macula degeneration (AMD). Although egg yolks serve as an important dietary source of lutein and zeaxanthin, data on xanthophyll concentrations in

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