Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Retina pigmentation

Photoreceptor outer segment layer Retina pigment epithelium layer Bruch s membrane Choroid layer... [Pg.300]

Retina pigment epithelial stem cells Retinoblastoma... [Pg.34]

Peripheral lymphocytes (rat) Chicken embryonic kidney muscle neural retina pigmented retina liver heart brain fibroblast Rat embryonic kidney liver... [Pg.189]

Expression, at least at the mRNA level, has also been reported in leukocytes [2545], skin fibroblasts [2546], kidney [2547] (and fetal liver and kidney [2547]), and the arterial wall [2548]. Other sites (in humans) include the male reproductive tract (round and elongated spermatids, vesicles within the caputepidii mis, glandular epithehmn of canda epididymis, seminal vesicles, prostate, and spermatozoa [2448] and retina pigment epithelial cells [2549, 2550]). P450 27A1 has been detected in human hver using LC-MS [635]. [Pg.660]

Taurine Is the predominant free amino acid in ox retina(48) where it is present at a concentration of 20-22 umoles/g w. w, tissue and of 16-18 /jmoles/100 mg protein.Sucn concentrations are higher in comparison to those reported in chick and rat retina by Pasantes-Morales et al.(6) and lower than that found in rat retina (4), In addition in the pigment epithelium of ox retina taurine is present at a concentration of 1.8-2.2 )jmoles/100 mg protein thus the retina/pigment epithelium ratio is about 8.5 1. [Pg.267]

George Wald medicine, physiology research on chemical processes that allow pigments in eye retina to convert light into vision... [Pg.4]

Disorder characterized by atrophy ofthe choroid (the thin membrane covering most of the posterior of the eye between the retina and sclera) and degeneration of the retinal pigment epithelium resulting in night blindness. The disease is caused by mutations in Rab escort protein Repl (component A of Rab geranylgeranyl transferase). [Pg.361]

A Retinol, p-carotene Visual pigments in the retina regulation of gene expression and cell differentiation p-carotene is an antioxidant Night blindness, xerophthalmia keratinization of skin... [Pg.482]

The retina comprises two principal components, the non-neural retinal pigment epithelium and the neural retina. The retinal pigment epithelium is an essential component of the visual system both structurally and functionally. It is important for the turnover and phagocytosis of photoreceptor outer segments, the metabolism of retinoids, the exchange of nutrients between the photoreceptors, and the choroidal blood vessels and the maintenance of an efficient outer blood-retinal barrier. [Pg.134]

Macula An oval, yellow-pigmented area on the central retina containing color-sensitive rods and the central point of sharpest vision. [Pg.1570]

Kltippel, M Beermann.F., Ruppert, S., Schmid, E Hummler, E., and Schiitz, G. (1991). The mouse tyrosinase promoter is sufficient for expression in melanocytes and in the pigmented epithelium of the retina. Proc. Natl. Acad. Sci. USA 88 3777-3781. [Pg.174]

The vertebrate retina contains two classes of light-sensitive receptor cells called rods and cones. The rod is an elongated cylindrical cell containing several hundred thylakoids which support the visual pigment. The pigment system in the rod is confined to internal membranes situated close to the outer membrane of the cell. In the other type of visual receptor, the cone, the pigment is situated in the external membrane itself. In the cone the external... [Pg.288]

Snodderly, D. M. et al. (1984). The macular pigment. II. Spatial distribution in primate retinas. Investigative Ophthalmology and Visual Science 25 674—685. [Pg.84]

Bernstein PS, Yoshida MD, Katz NB, McClane RW, and Gellermann W (1998), Raman detection of macular carotenoid pigments in intact human retina, Invest. Ophthal. Vis. Sci. 39 2003-2011. [Pg.108]

Ermakov IV, McClane RW, Gellermann W, and Bernstein PS (2001b), Resonant Raman detection of macular pigment levels in the living human retina, Opt. Lett. 26 202-204. [Pg.108]

Gellermann W, Ermakov IV, Ermakova MR, McClane RW, Zhao DY, and Bernstein PS (2002a), In vivo resonant Raman measurement of macular carotenoid pigments in the young and the aging human retina, J. Opt. Soc. Am. A 19 1172-1186. [Pg.108]

See other pages where Retina pigmentation is mentioned: [Pg.90]    [Pg.348]    [Pg.171]    [Pg.90]    [Pg.348]    [Pg.171]    [Pg.18]    [Pg.437]    [Pg.483]    [Pg.121]    [Pg.7]    [Pg.128]    [Pg.134]    [Pg.135]    [Pg.127]    [Pg.134]    [Pg.138]    [Pg.16]    [Pg.423]    [Pg.167]    [Pg.288]    [Pg.587]    [Pg.588]    [Pg.24]    [Pg.75]    [Pg.78]    [Pg.81]    [Pg.81]    [Pg.82]    [Pg.82]    [Pg.82]    [Pg.88]    [Pg.92]   


SEARCH



Retina

© 2024 chempedia.info