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Retinoic acid (simplified nomenclature for all-trans-retinoic acid) is a metabolite of vitamin A 1 (all-trans-retinol) that is required for embryonic development, male fertility, regulation of bone growth and immune function. [2] All-trans-retinoic acid is required for chordate animal development, which includes all higher animals from fish to ...
For all-trans-retinoic acid as the metabolite of vitamin A, see Retinoic acid. Tretinoin, also known as all-trans retinoic acid (ATRA), is a medication used for the treatment of acne and acute promyelocytic leukemia. [ 8 ][ 9 ][ 10 ] For acne, it is applied to the skin as a cream, gel or ointment. [ 10 ]
First generation retinoids are produced naturally in the body and interact with their normal biological counterparts, such as retinol binding protein 4 for retinol, retinoid receptors for all-trans-retinoic acid or 9-cis-retinoic acid. [7] 13-cis retinoic acid has an unknown biological pathway but appears to act as a growth factor. [8]
Retinoic acid via the retinoic acid receptor influences the process of cell differentiation, hence, the growth and development of embryos. During development, there is a concentration gradient of retinoic acid along the anterior-posterior (head-tail) axis. Cells in the embryo respond to retinoic acid differently depending on the amount present.
Acitretin, sold under the brand names Neotigason[2] and Soriatane, [5] is a second-generation retinoid. It is taken orally, and is typically used for psoriasis. [6] Acitretin is an oral retinoid used in the treatment of severe resistant psoriasis. Because of the potential for problems and severe side effects it is generally used in only very ...
As for the risks of too much RA during embryogenesis, the prescription drugs tretinoin (all-trans-retinoic acid) and isotretinoin (13-cis-retinoic acid), used orally or topically for acne treatment, are labeled with block-box warnings for pregnant women or women who may become pregnant, as they are known human teratogens. [31] [32]
Isotretinoin, also known as 13-cis-retinoic acidand sold under the brand name Accutaneamong others, is a medication used to treat skin diseases like harlequin-type ichthyosis, and lamellar ichthyosis, and severe cystic acneor moderate acne that is unresponsive to antibiotics.[6] Isotretinoin is used off-label to treat basal cell carcinomaand ...
The retinoic acid receptor (RAR) is a type of nuclear receptor which can also act as a ligand-activated transcription factor [1] that is activated by both all-trans retinoic acid and 9-cis retinoic acid, retinoid active derivatives of Vitamin A. [2] They are typically found within the nucleus. [3] There are three retinoic acid receptors (RAR ...