Results 11 to 20 of about 17,008 (279)
, 2023 Although light is required for photosynthesis, excess light can cause photo-oxidative damage that decreases the efficiency and rate of photosynthesis, a phenomenon known as photoinhibition. Like all photosynthetic organisms, Chlamydomonas reinhardtii cells employ a variety of photoprotective mechanisms, antioxidant defenses, and signaling pathways to ...
Iwai, M, Wakao, S, Niyogi, KK
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Light-independent regulation of algal photoprotection by CO2 availability [PDF]
Nature Communications, 2023 Photosynthetic algae have evolved mechanisms to cope with suboptimal light and CO2 conditions. When light energy exceeds CO2 fixation capacity, Chlamydomonas reinhardtii activates photoprotection, mediated by LHCSR1/3 and PSBS, and the CO2 Concentrating ...
M. Águila Ruiz-Sola +18 more
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Systemic photoprotection in 2021 [PDF]
Clinical and Experimental Dermatology, 2021 Systemic photoprotection aims to negate the negative effects of ultraviolet radiation-induced DNA damage. Systemic supplements may be used as a monotherapy or in combination with topical sunscreens. Using the keywords 'carotenoids', 'flavonoids', 'systemic photoprotection', 'polyphenols' and 'polypodium leucotomos extract', we searched the databases ...
T. Searle, F. R. Ali, F. Al‐Niaimi
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Historical perspective on sunscreens: Shift towards worldwide individualized photoprotection
Journal of Photochemistry and PhotobiologyToday's Western lifestyle leads to increasing rates of skin cancers. Photoprotection behavior has become a hot topic in the last decades. This historical review aims at understanding modern photoprotection advice, considering decades of dermatological ...
Morgane Burq, Michèle Verschoore
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Oral Photoprotection: Effective Agents and Potential Candidates
Frontiers in Medicine, 2018 Electromagnetic radiation in the ultraviolet, visible, and infrared ranges produces biologic effects in humans. Where some of these effects are beneficial, others are harmful to the skin, particularly those stemming from ultraviolet radiation (UVR ...
Concepción Parrado +5 more
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Implications of visible light and means of photoprotection
Journal of Photochemistry and Photobiology, 2023 Visible light (VL) has been shown to promote genotoxicity through free radical generation and structural protein degradation. These stressful events promote cellular vulnerability, which manifests clinically as erythema, hyperpigmentation, and photoaging.
Brittany Lane +4 more
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Unravelling the Photoprotection Properties of Garden Cress Sprout Extract [PDF]
Molecules, 2021 Plants, as with humans, require photoprotection against the potentially damaging effects of overexposure to ultraviolet (UV) radiation. Previously, sinapoyl malate (SM) was identified as the photoprotective agent in thale cress. Here, we seek to identify
Temitope T. Abiola +5 more
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PHOTOPROTECTION IN ERYTHROPOIETIC PROTOPHYRIA: MECHANISM OF PHOTOPROTECTION BY BETA CAROTENE
Journal of Investigative Dermatology, 1977 Erythropoietic protoporphyria is a genetic disease caused by the accumulation of protoporphyrin IX. This molecule absorbs 400-nm light and its presence is at times associated with severe cutaneous photosensitivity. The only effective treatment for this disease is oral administration of beta carotene.
Moshell, Alan N, Bjornson, Loring
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Superior Photoprotection of Cyanine Dyes with Thio-imidazole Amino Acids
, 2023 Preventing fluorophore photobleaching and unwanted blinking is crucial for singlemolecule fluorescence studies. Reductants achieve photoprotection via quenching excited tripletstates, yet either require counteragents, or for popular alkyl-thiols, are ...
Viktorija, Glembockyte +7 more
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Iatreia, 2023 Background: Frequent and indiscriminate sun exposure has determined an increase in skin cancer rates globally. In Venezuela, reports evaluating sun exposure practices and the use of photoprotection measures are limited.
Aguasanta González-Delatorre +3 more
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