Results 31 to 40 of about 712,970 (307)

Epigenetics and cell death: DNA hypermethylation in programmed retinal cell death. [PDF]

, 2013
BackgroundVertebrate genomes undergo epigenetic reprogramming during development and disease. Emerging evidence suggests that DNA methylation plays a key role in cell fate determination in the retina.
Enke, Raymond A, Fuller, John A, Kalesnykas, Giedrius, Merbs, Shannath L, Wahlin, Karl J, Zack, Donald J   +5 more
core   +5 more sources

Retinal Vibrations in Bacteriorhodopsin are Mechanically Harmonic but Electrically Anharmonic: Evidence From Overtone and Combination Bands

Frontiers in Molecular Biosciences, 2021
Fundamental vibrations of the chromophore in the membrane protein bacteriorhodopsin (BR), a protonated Schiff base retinal, have been studied for decades, both by resonance Raman and by infrared (IR) difference spectroscopy.
Victor A. Lorenz-Fonfria, Kiyoshi Yagi, Shota Ito, Hideki Kandori, Hideki Kandori   +4 more
doaj   +1 more source

Age and diabetes related changes of the retinal capillaries: an ultrastructural and immunohistochemical study [PDF]

, 2015
Normal human aging and diabetes are associated with a gradual decrease of cerebral flow in the brain with changes in vascular architecture. Thickening of the capillary basement membrane and microvascular fibrosis are evident in the central nervous system
ARTICO, Marco, BATTAGLIONE, Ezio, BIANCHI, ENRICA, Feher, Janos, Kovacs, Illes, MAGLIULO, Giuseppe, Micera, Alessandra, ORLANDO, Maria Patrizia, PLATEROTI, Rocco, Ripandelli, Guido, TAURONE, SAMANTA   +10 more
core   +1 more source

Rhegmatogenous retinal detachment masquerading as exudative panuveitis with intense anterior chamber inflammatory reaction. [PDF]

, 2020
Purpose:This is a retrospective case report illustrating the diagnostic and therapeutic challenges associated with a chronic rhegmatogenous retinal detachment masquerading as a severe panuveitis with intense anterior chamber inflammation.
Bhisitkul, Robert B, Gonzales, John A, Joye, Ashlin S, Pereira, Daniel DS   +3 more
core  

The Effect of Cone Opsin Mutations on Retinal Structure and the Integrity of the Photoreceptor Mosaic [PDF]

, 2012
Purpose. To evaluate retinal structure and photoreceptor mosaic integrity in subjects with OPN1LW and OPN1MW mutations. Methods. Eleven subjects were recruited, eight of whom have been previously described.
Banin, Eyal, Carroll, Joseph, Connor, Thomas B., Jr., Cooper, Robert F., Dubis, Adam M., Dubra, Alfredo, Fishman, Gerald, Gardner, Jessica C., Genead, Mohamed, Hardcastle, Alison J., Hunt, David M., Michaelides, Michel, Mizrahi-Meissonnier, Liliana, Moore, Anthony T., Neitz, Jay, Neitz, Maureen, Nordgren, Rick, Sharon, Dror, Stepien, Kimberly E., Williams, David R.   +19 more
core   +2 more sources

Retinal photodamage

Journal of Photochemistry and Photobiology B: Biology, 2001
The retina represents a paradox, in that, while light and oxygen are essential for vision, these conditions also favour the formation of reactive oxygen species leading to photochemical damage to the retina. Such light damage seems to be multi-factorial and is dependent on the photoreactivity of a variety of chromophores (e.g., vitamin A metabolites ...
Boulton, Mike, Różanowska, Małgorzata, Różanowski, Bartosz   +2 more
openaire   +3 more sources

Severity Grading and Early Retinopathy Lesion Detection through Hybrid Inception-ResNet Architecture

Sensors, 2021
Diabetic retinopathy (DR) is a diabetes disorder that disturbs human vision. It starts due to the damage in the light-sensitive tissues of blood vessels at the retina.
Sana Yasin, Nasrullah Iqbal, Tariq Ali, Umar Draz, Ali Alqahtani, Muhammad Irfan, Abdul Rehman, Adam Glowacz, Samar Alqhtani, Klaudia Proniewska, Frantisek Brumercik, Lukasz Wzorek   +11 more
doaj   +1 more source

Comparison of the Fixation Effects of Six Composite Fixatives on Retinal Tissue of Golden Hamsters

Shiyan dongwu yu bijiao yixue
Objective To compare the effects of six composite fixatives on paraffin sections of golden hamster retinal tissue, and to optimize the fixation methods for retinal tissue paraffin sections of golden hamsters.
WU Haifeng, ZHOU Xiaojiang, LI Chenjiang, LI Huaiyin, GAO Ming   +4 more
doaj   +1 more source

Optical Coherence Tomography Angiography Characteristics of Polypoidal Lesions in Caucasians

Journal of Ophthalmology, 2023
Purpose. The aim of the study is to analyze the swept source-optical coherence tomography angiography (SS-OCTA) characteristics of polypoidal lesions in Caucasian patients. Methods.
Daniel Ahmed-Balestra, Alexandra Graf, Martin Stattin, Anna-Maria Haas, Stefan Kickinger, Michael Jacob, Claus Zehetner, Katharina Krepler, Siamak Ansari-Shahrezaei   +8 more
doaj   +1 more source

Molecular Properties of β-Carotene Oxygenases and Their Potential in Industrial Production of Vitamin A and Its Derivatives

Antioxidants, 2022
β-Carotene 15,15′-oxygenase (BCO1) and β-carotene 9′,10′-oxygenase (BCO2) are potential producers of vitamin A derivatives, since they can catalyze the oxidative cleavage of dietary provitamin A carotenoids to retinoids and derivative such as ...
Kyung-Chul Shin, Min-Ju Seo, Yeong-Su Kim, Soo-Jin Yeom   +3 more
doaj   +1 more source