Biomaterial Database

The role of the epidermal 12-hydroxyeicosatetraenoic acid receptor in the skin. 1992

T Ruzicka

Department of Dermatology, University of Munich, FRG.

The epidermal layer of the skin is the site of active arachidonic acid metabolism. The main product of epidermal keratinocytes is the 12-lipoxygenase derivative 12(S)-hydroxy-eicosatetraenoic acid (12(S)-HETE). Its biological effects in skin are mediated via specific, high affinity binding sites present on both keratinocytes and epidermal antigen presenting Langerhans cells. The main biological effect is chemotaxis of keratinocytes suggesting a physiological role of 12-HETE in cutaneous wound healing. Analysis of 12-HETE receptors in various cutaneous disease states revealed a dramatic defect in lesional and uninvolved psoriatic skin which may represent a central molecular defect in the pathophysiology of the disease.

UI	MeSH Term	Description	Entries
D011565	Psoriasis	A common genetically determined, chronic, inflammatory skin disease characterized by rounded erythematous, dry, scaling patches. The lesions have a predilection for nails, scalp, genitalia, extensor surfaces, and the lumbosacral region. Accelerated epidermopoiesis is considered to be the fundamental pathologic feature in psoriasis.	Palmoplantaris Pustulosis,Pustular Psoriasis of Palms and Soles,Pustulosis Palmaris et Plantaris,Pustulosis of Palms and Soles,Psoriases
D011956	Receptors, Cell Surface	Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands.	Cell Surface Receptor,Cell Surface Receptors,Hormone Receptors, Cell Surface,Receptors, Endogenous Substances,Cell Surface Hormone Receptors,Endogenous Substances Receptors,Receptor, Cell Surface,Surface Receptor, Cell
D002455	Cell Division	The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.	M Phase,Cell Division Phase,Cell Divisions,Division Phase, Cell,Division, Cell,Divisions, Cell,M Phases,Phase, Cell Division,Phase, M,Phases, M
D002633	Chemotaxis	The movement of cells or organisms toward or away from a substance in response to its concentration gradient.	Haptotaxis
D004817	Epidermis	The external, nonvascular layer of the skin. It is made up, from within outward, of five layers of EPITHELIUM: (1) basal layer (stratum basale epidermidis); (2) spinous layer (stratum spinosum epidermidis); (3) granular layer (stratum granulosum epidermidis); (4) clear layer (stratum lucidum epidermidis); and (5) horny layer (stratum corneum epidermidis).
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006893	Hydroxyeicosatetraenoic Acids	Eicosatetraenoic acids substituted in any position by one or more hydroxy groups. They are important intermediates in a series of biosynthetic processes leading from arachidonic acid to a number of biologically active compounds such as prostaglandins, thromboxanes, and leukotrienes.	HETE,Acids, Hydroxyeicosatetraenoic
D018055	Receptors, Eicosanoid	Cell surface proteins that bind eicosanoids with high affinity and trigger intracellular changes influencing the behavior of cells. Among the eicosanoid receptors are receptors for the prostaglandins, thromboxanes, and leukotrienes.	Eicosanoid Receptors,Eicosanoid Receptor,Receptor, Eicosanoids,Eicosanoids Receptor,Receptor, Eicosanoid
D019377	12-Hydroxy-5,8,10,14-eicosatetraenoic Acid	A lipoxygenase metabolite of ARACHIDONIC ACID. It is a highly selective ligand used to label mu-opioid receptors in both membranes and tissue sections. The 12-S-HETE analog has been reported to augment tumor cell metastatic potential through activation of protein kinase C. (J Pharmacol Exp Ther 1995; 274(3):1545-51; J Natl Cancer Inst 1994; 86(15):1145-51)	12-HETE,12-R-HETE,12-S-HETE,12-S-Hydroxyeicosatetraenoic Acid,12 S Hydroxyeicosatetraenoic Acid,Acid, 12-S-Hydroxyeicosatetraenoic