Results 61 to 70 of about 3,246,007 (207)

Orthodentine‐osteodentine and osteocytic‐anosteocytic transition inferred from Silurian stem chondrichthyan dermal jawbones with ever‐white teeth overgrown by brown denticles

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background The dentigerous jawbones of a 423‐million‐year‐old stem chondrichthyan (ischnacanthid acanthodian) carry a characteristic combination of multi‐row non‐shedding white teeth with brownish overgrowing denticles. The color distinction makes it a good model for observing the interaction between two odontode lineages, but the nature of ...
Jia‐Cih Kang   +3 more
wiley   +1 more source

Pentosidine accumulates in the aging vitreous body: A gender effect

open access: yes, 2009
The human vitreous body undergoes structural changes with aging. This can be followed by a posterior vitreous detachment, which can result in ocular pathology.
Worp, R.J. van der   +14 more
core   +2 more sources

LPCAT3 as a Potential Drug Target for Ultraviolet Radiation–Induced Cataract: Insights From Multiomics Analysis

open access: yesThe Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Ultraviolet B (UVB) radiation is a major risk factor for cataract development, but the molecular mechanisms underlying this process, particularly the involvement of regulated cell death pathways such as ferroptosis, remain unclear. Transcriptomic, proteomic, and metabolomic analyses were performed on lens tissues from UVB‐induced cataract rat ...
Fei Xu   +4 more
wiley   +1 more source

Current surgery of retinal detachment recurrence. Review

open access: yesOftalʹmologiâ, 2014
this review presents a detailed analysis and an experience of surgical treatment of retinal detachment recurrence associated with light silicone oil tamponade of vitreous cavity.
V. D. Zakharov   +3 more
doaj   +1 more source

Neurotrophic Signaling, Sleep Physiology, and Retinal Neuroprotection: Integrative Mechanisms and Therapeutic Implications for Glaucoma

open access: yesSensory Neuroscience, EarlyView.
Glaucoma is increasingly understood as a neurodegenerative disorder shaped by sleep and circadian physiology, not intraocular pressure alone. Sleep loss and obstructive sleep apnea suppress BDNF–TrkB neurotrophic signaling, impair sleep‐dependent glymphatic clearance, and trigger microglial neuroinflammation and vascular insult at the optic nerve head,
Karyme M. Alemán‐Villa   +5 more
wiley   +1 more source

Presence of Nationally Banned Carbamates and Organophosphate Pesticides in Wild Carnivores, Southeastern Brazil

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT As top predators, terrestrial carnivores face great risk of pesticide exposure and serve as sentinels of environmental contamination. Additionally, terrestrial carnivores are frequently threatened by intentional or secondary poisoning with highly toxic compounds, such as carbamates and organophosphates.
Marina Pellegrino da Silva   +10 more
wiley   +1 more source

Emergency management: vitreous loss [PDF]

open access: yes, 2018
The most common mistake when managing vitreous loss is to leave some of it behind in the anterior chamber or up to the wound. Knowing when to stop using the vitrector, and how to tell whether there is any vitreous remaining, is ...
William Dean
core  

25G Ultrasonic Vitrectomy in Surgical Treatment of Idiopathic Macular Hole

open access: yesКреативная хирургия и онкология, 2019
Introduction. Idiopathic macular hole (IMH) is a frequent disorder of the posterior segment of the eye that impacts on visual functions leading to the reduction of visual acuity and the manifestation of metamorphopsia.
B. M. Aznabaev   +2 more
doaj   +1 more source

The elasticity of the vitreous body [PDF]

open access: yesProceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character, 1933
Abstract In a series of previous papers (Duke-Elder, 1929) evidence has been presented that the vitreous body of the eye is an elastic protein gel in a state of high turgescence. About the physical nature of the system and the conditions which determine its stability little is known; and since these questions, in addition to being of ...
E. B. Robertson   +1 more
openaire   +1 more source

Gut microbiota dysbiosis in the inflammatory pathogenesis of diabetic retinopathy

open access: yesVIEW, EarlyView.
This graphical abstract illustrates how gut dysbiosis drives diabetic retinopathy through the gut‐retina axis, a process unfolding in three interconnected stages. First, in the gut, a decrease in beneficial bacteria and an increase in pro‐inflammatory taxa compromise the intestinal barrier, causing a “leaky gut” that allows LPS to translocate into the ...
Junyan Hu, Jingxiang Zhong
wiley   +1 more source

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