Results 201 to 210 of about 7,318 (257)

Enhancing transdermal delivery of retinyl acetate via transethosomes with emphasis on the impact of edge activators on penetration, safety, and efficacy. [PDF]

Sci Rep
Wongsirojkul N, Takagi M, Wongngam Y, Sattayakhom A, Prachongsai I, Chunglok W, Opaprakasit P, Polpanich D.   +7 more
europepmc   +1 more source

Quantification of All-Trans Retinoic Acid and Cytokine Levels After Fungal, Viral and Bacterial Infections in the Lung. [PDF]

J Cell Mol Med
Krug SA, Singh R, Yu J, Witt WT, Pilli NR, Wilks A, Barbier M, Robinson KM, Kane MA.   +8 more
europepmc   +1 more source

Editorial: Insights in bone research: 2023. [PDF]

Front Endocrinol (Lausanne)
Brunetti G, Tobias JH.
europepmc   +1 more source

Vitamin A - discovery, metabolism, receptor signaling and effects on bone mass and fracture susceptibility. [PDF]

Front Endocrinol (Lausanne)
Lerner UH.
europepmc   +1 more source

LX-2 Stellate Cells Are a Model System for Investigating the Regulation of Hepatic Vitamin A Metabolism and Respond to Tumor Necrosis Factor α and Interleukin 1β. [PDF]

Drug Metab Dispos
Czuba LC, Isoherranen N.
europepmc   +1 more source

Orally ingested (13)C(2)-retinol is incorporated into hepatic retinyl esters in a nonhuman primate (Macaca mulatta) model of hypervitaminosis A.

, 2010
Anne L. Escaron, Sherry A. Tanumihardjo
openalex   +1 more source

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Retinyl esters in the vertebrate neuroretina

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1989
High-performance liquid chromatography (HPLC) was employed to measure retinyl esters in the vertebrate retina. Both retina and retinal pigment epithelium (RPE) from frog, chicken, and bovine eyes were studied. In comparison to the RPE, the retina possessed a significant level of 11-cis and all trans retinyl palmitate.
K A, Rodriguez, A T, Tsin
openaire   +2 more sources

Retinyl esterase activity of purified rat liver retinyl ester lipoprotein complex

Archives of Biochemistry and Biophysics, 1979
Abstract Retinyl ester lipoprotein complex from rat liver was shown to possess a retinyl esterase activity toward its own ligand complement. In the presence of serum albumin the retinyl esterase activity at 30 °C was about fivefold larger than the activity at 4 °C, while higher temperatures than 30 °C led to some degradation of retinyl compounds. The
C C, Chen, J, Heller
openaire   +2 more sources

Retinyl Esters Are the Substrate for Isomerohydrolase

Biochemistry, 2003
Regeneration of 11-cis retinal from all-trans retinol in the retinal pigment epithelium (RPE) is a critical step in the visual cycle. The enzyme(s) involved in this isomerization process has not been identified and both all-trans retinol and all-trans retinyl esters have been proposed as the substrate.
Gennadiy, Moiseyev, Rosalie K, Crouch, Patrice, Goletz, John, Oatis, T Michael, Redmond, Jian-xing, Ma   +5 more
openaire   +2 more sources

Retinyl ester hydrolases in retinal pigment epithelium

Archives of Biochemistry and Biophysics, 1991
In bovine retinal pigment epithelium membranes we have found three hydrolases which were active against trans-retinyl palmitate. This was possible by assaying different subcellular fractions as a function of pH in the range 3-9. Detection of these activities has been favored by the use in the enzyme assay of Triton X-100, which has an activating effect
M C, Gueli, C M, Nicotra, A M, Pintaudi, A, Paganini, L, Pandolfo, G, De Leo, M A, Di Bella   +6 more
openaire   +2 more sources