retinal

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retinal

[′ret·ən·əl]
(biochemistry)
A carotenoid, produced as an intermediate in the bleaching of rhodopsin and decomposition to vitamin A. Also known as vitamin A aldehyde.
References in periodicals archive ?
Genetic evidence that retinaldehyde dehydrogenase Raldh1 (Aldhtat) functions downstream of alcohol dehydrogenase Adh1 in metabolism of retinol to retinoic acid.
inactivation of retinaldehyde dehydrogenase type 3 is prevented by maternal retinoic acid treatment.
One factor reducing the production of ATRA could be limiting amounts of the enzymes involved in the conversion of retinol to retinaldehyde (ROLDH) and retinaldehyde to ATRA (RALDH) (Figure 1).
Researchers at the Hebrew University in Israel have found that shutting down a molecule needed to produce retinoic acid, known as retinaldehyde dehydrogenase (RALDH2), increases sensitivity of developing embryos to low doses of alcohol.
Retinol can be oxidised by epidermal cells to retinaldehyde and then to all-trans-retinoic acid, which is regarded as the biologically active form of vitamin A.
Vitamin A (retinol) is sequentially metabolized to retinaldehyde, retinoic acid for its functions in animals (Hofman & Eichele 1994, Saari 1994).
The product contains Retinaldehyde, the strongest cosmeceutical form of Vitamin A available without a prescription, the brand says, as well as ceramide 3 and plant stem cells.