Results 11 to 20 of about 12,816 (241)

Mitochondrial alternative oxidase pathway acts as an electron sink during photosynthetic induction in Rumex K-1 leaves

open access: yesPhotosynthetica, 2021
Chloroplast PSII photochemical efficiency is upregulated more rapidly than CO2 assimilation during photosynthesis induction, suggesting the existence of other electron sinks than that of CO2 assimilation.
D.D. CHENG, L.T. ZHANG
doaj   +1 more source

Photosystems under high light stress: throwing light on mechanism and adaptation

open access: yesPhotosynthetica, 2023
High light stress decreases the photosynthetic rate in plants due to photooxidative damage to photosynthetic apparatus, photoinhibition of PSII, and/or damage to PSI.
N. SHARMA   +7 more
doaj   +1 more source

Cross-sectional study on clinical profile and quality of life of individuals with occulocutaneous albinism in Lagos, Nigeria

open access: yesPigment International, 2023
Introduction: Albinism is a genetic disorder of pigmentation with variable phenotypic presentations. Albinism occurs all over the world, with highest prevalence in sub-Saharan Africa.
Olusola O Ayanlowo   +5 more
doaj   +1 more source

Special issue in honour of Prof. Reto J. Strasser - Analysis of OJIP transients during photoinactivation of photosystem II indicates the presence of multiple photosensitizers in vivo and in vitro

open access: yesPhotosynthetica, 2020
Generally, excessive excitation absorbed by the pigments is considered the cause of PSII photodamage. Previous studies of action spectra of PSII photodamage concluded that shorter wavelengths induce more damage, supporting the hypothesis of the existence
I. IERMAK, M. SZABÓ, A. ZAVAFER
doaj   +1 more source

Hydrogen sulfide protects retina from blue light-induced photodamage and degeneration via inhibiting ROS-mediated ER stress-CHOP apoptosis signal

open access: yesRedox Report, 2022
Background: Hydrogen sulfide (H2S) is a small reducing gas molecule with various biological functions such as anti-oxidative, anti-apoptotic and anti-inflammatory activities.
Sen Zhu   +6 more
doaj   +1 more source

Retinal photodamage

open access: yesJournal 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   +2 more
openaire   +3 more sources

MURIN: Multimodal Retinal Imaging and Navigated-laser-delivery for dynamic and longitudinal tracking of photodamage in murine models

open access: yesFrontiers in Ophthalmology, 2023
IntroductionLaser-induced photodamage is a robust method for investigating retinal pathologies in small animals. However, aiming of the photocoagulation laser is often limited by manual alignment and lacks real-time feedback on lesion location and ...
Jose J. Rico-Jimenez   +12 more
doaj   +1 more source

Interventions for photodamaged skin [PDF]

open access: yesCochrane Database of Systematic Reviews, 2005
Photodamage describes skin changes such as fine and coarse wrinkles, roughness, freckles and pigmentation changes that occur as a result of prolonged exposure to the sun. Many treatments are available to reverse the damage, but it is unclear which work and at what cost in terms of unwanted side effects.To assess the effects of topically applied ...
Samuel, Miny   +3 more
openaire   +3 more sources

Intrinsic indicator of photodamage during label-free multiphoton microscopy of cells and tissues.

open access: yesPLoS ONE, 2014
Multiphoton imaging has evolved as an indispensable tool in cell biology and holds prospects for clinical applications. When addressing endogenous signals such as coherent anti-Stokes Raman scattering (CARS) or second harmonic generation, it requires ...
Roberta Galli   +7 more
doaj   +1 more source

Actinic keratosis in vitiligo after oral PUVAsol therapy with review

open access: yesPigment International, 2018
Vitiligo is an acquired disorder characterised by depigmentation. The etiopathogenesis is still unclear and many theories have been proposed for the same.
Saumya Sankhwar, Sunil K Gupta
doaj   +1 more source

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