Search results

article

Ultraviolet and photosynthetically active radiation can both induce photoprotective capacity allowing barley to overcome high radiation stress

Karel Klem, Petr Holub, Michal Štroch, Jakub Nezval, more

Plant Physiology and Biochemistry > 2015 > 93 > Complete > 74-83

The main objective of this study was to determine the effects of acclimation to ultraviolet (UV) and photosynthetically active radiation (PAR) on photoprotective mechanisms in barley leaves. Barley plants were acclimated for 7 days under three combinations of high or low UV and PAR treatments ([UV−PAR−], [UV−PAR+], [UV+PAR+]). Subsequently, plants were exposed to short-term high radiation stress (HRS;...

article

Photosensibilité du lupus érythémateux

G. Bens

La Revue de medecine interne > 2009 > 30 > 10 > 857-865

La photosensibilité fait partie des critères diagnostiques de l’ARA du lupus érythémateux systémique. Une exposition solaire peut aussi déclencher des manifestations extracutanées du lupus. La photosensibilité est parfois difficile à mettre en évidence en raison d’un délai important entre l’exposition solaire et l’apparition des lésions, mais aussi parce que le photodéclenchement par le rayonnement...

article

Photoprotection de l’enfant et de l’adolescent

L. Meunier

Journal de pediatrie et de puericulture > 2009 > 22 > 1 > 19-22

Les coups de soleil pendant l’enfance et l’adolescence sont des facteurs de risque du mélanome. La prévention primaire repose sur la photoprotection de l’enfant et de l’adolescent. Les principales mesures comportent l’éviction solaire, la pratique des activités d’extérieur en dehors des heures d’exposition maximale, l’utilisation de vêtements photoprotecteurs et de produits de protection solaire (PPS)...

article

Chronic actinic dermatitis and photoprotection

M.-C. Marguery

Revue francaise d'allergologie et d'immunologie clinique > 2007 > 47 > Supplement 2 > S36-S40

Chronic actinic dermatitis is an uncommun and severe idiopathic photodermatosis. It especially occurs in male patients older than 50 years of age (medium age : 65 years). At the beginning, the patient presents an eczema on sun-exposed-areas, then covered areas may also become involved. When the condition becomes more chronic, the skin is more lichenified with papules on the nape of the neck, forehead,...

article

La photoprotection

J.C. Beani

Revue francaise d'allergologie et d'immunologie clinique > 1999 > 39 > 4 > 311-323

La plupart des effets du soleil et, plus particulièrement des ultraviolets (UV), sur la peau sont néfastes. Les études récentes ont clairement montré que les UVA pourraient être aussi délétères que les UVB par un mécanisme indirect impliquant la génération d'espèces réactives de l'oxygène. Le but de la photoprotection artificielle est de compléter et de pallier aux défaillances de la photoprotection...

article

Lupus et soleil

JP Lacour

La Revue de medecine interne > 1996 > 17 > 3 > 196-199

article

Intervening dark periods negatively affect the photosynthetic performance of Chlamydomonas reinhardtii during growth under fluctuating high light

Fritz Hemker, Nicolas Ammelburger, Peter Jahns

Plant, Cell & Environment > 47 > 11 > 4246 - 4258

The acclimation of the green algae Chlamydomoas reinhardtii to high light (HL) has been studied predominantly under continuous illumination of the cells. Here, we investigated the impact of fluctuating HL in alternation with either low light (LL) or darkness on photosynthetic performance and on photoprotective responses. Compared to intervening LL phases, dark phases led to (1) more pronounced reduction...

article

An important step towards the comprehensive sun protection: Blue‐light exposure inhibits DNA repair in reconstituted human skin and a broadband sunscreen avoids this inhibition

Paulo Newton Tonolli, Mauricio S. Baptista

Photochemistry and Photobiology > 100 > 5 > 1527 - 1530

The field of sun protection is quickly changing and the research article by Douki et al., published in the current issue of Photochemistry and Photobiology, reported key experimental data that will certainly help the development of better sun care products. Mutagenic photoproducts (CPDs, cyclobutane pyrimidine dimers and 6‐4PPs, pyrimidine‐6‐4‐pyrimidone photoproducts) were formed in the reconstructed...

article

Pediatric parenteral nutrition and hydroperoxide toxicity: Evaluation of the effectiveness of photoprotection medical devices

Pierre Nizet, Nicolas Guillard, Lionel Chabaud, Kamel‐Olivier Sellal, more

Photochemistry and Photobiology > 100 > 5 > 1467 - 1474

Exposure of parenteral nutrition (PN) to light induces hydroperoxide (HPO) formation whose toxicity, especially in pediatrics, is documented. In this context, we evaluated the efficacy of photoprotection medical devices used in our institution to protect PN from degradation after two different exposures to light. A mixed oil lipid emulsion (Smoflipid®) in standard or opaque syringes and a ternary...

article

Blue light impairs the repair of UVB‐induced pyrimidine dimers in a human skin model

Thierry Douki, Daniel Bacqueville, Carine Jacques, Camille Geniès, more

Photochemistry and Photobiology > 100 > 5 > 1359 - 1364

In recent years, interest is growing in the biological cutaneous effects of high‐energy visible light (400–450 nm). In the present study, we explored the impact of blue light (BL) on the repair of pyrimidine dimers, the major class of premutagenic DNA damage induced by exposure to sunlight. We unambiguously demonstrate that the exposure of in vitro reconstructed human epidermis to environmentally...

article

Challenges of tinted sunscreen in skin of color

Gloria R. Xue, Iltefat H. Hamzavi, Indermeet Kohli, Tasneem F. Mohammad

International Journal of Dermatology > 63 > 9 > e221 - e222

article

The photosynthetic performance and photoprotective role of carotenoids response to light stress in intertidal red algae Neoporphyra haitanensis

Yongbo Huang, Ziyu Weng, Shuang Li, Shuyu Zhang, more

Journal of Phycology > 60 > 4 > 942 - 955

Neoporphyra haitanensis, a red alga harvested for food, thrives in the intertidal zone amid dynamic and harsh environments. High irradiance represents a major stressor in this habitat, posing a threat to the alga's photosynthetic apparatus. Interestingly, N. haitanensis has adapted to excessive light despite the absence of a crucial xanthophyll cycle‐dependent photoprotection pathway. Thus, it is...

article

Sunscreens prescribed to patients with skin of color and/or with melasma: A survey of 221 dermatologists and dermatology residents in Spain

Daniel Morgado‐Carrasco, Jesús Delgado, Ludmila Prudkin‐Silva, Júlia Santamaria, more

Photodermatology, Photoimmunology & Photomedicine > 40 > 5 > n/a - n/a

Background Dark‐skinned individuals (DSI) present high rates of melasma and post‐inflammatory hyperpigmentation. The use of sunscreens with mineral filters is essential for prevention and treatment. Our objective was to determine the preferences of dermatologists and dermatology residents in the prescription of sunscreens for DSI. Methods An anonymous survey of attendees at an online photoprotection...

article

Psb28 protein is indispensable for stable accumulation of PSII core complexes in Arabidopsis

Yuwei Zhao, Linbin Deng, Robert L. Last, Wei Hua, more

The Plant Journal > 119 > 3 > 1226 - 1238

Enhancing the efficiency of photosynthesis represents a promising strategy to improve crop yields, with keeping the steady state of PSII being key to determining the photosynthetic performance. However, the mechanisms whereby the stability of PSII is maintained in oxygenic organisms remain to be explored. Here, we report that the Psb28 protein functions in regulating the homeostasis of PSII under...

article

Redox regulation in chloroplast thylakoid lumen: The pmf changes everything, again

Donghee Hoh, John E. Froehlich, David M. Kramer

Plant, Cell & Environment > 47 > 8 > 2749 - 2765

Photosynthesis is the foundation of life on Earth. However, if not well regulated, it can also generate excessive reactive oxygen species (ROS), which can cause photodamage. Regulation of photosynthesis is highly dynamic, responding to both environmental and metabolic cues, and occurs at many levels, from light capture to energy storage and metabolic processes. One general mechanism of regulation...

article

Sunproofing from within: A deep dive into oral photoprotection strategies in dermatology

Dan Hartmann, Fernando Valenzuela

Photodermatology, Photoimmunology & Photomedicine > 40 > 4 > n/a - n/a

Background Photoprotection is the first measure in the prevention and treatment of the deleterious effects that sunlight can cause on the skin. It is well known that prolonged exposure to solar radiation leads to acute and chronic complications, such as erythema, accelerated skin aging, proinflammatory and procarcinogenic effects, and eye damage, among others. Methods A better understanding of...

article

Skeletonema marinoi ecotypes show specific habitat‐related responses to fluctuating light supporting high potential for growth under photobioreactor light regime

Charlotte Volpe, Marianne Nymark, Tom Andersen, Per Winge, more

New Phytologist > 243 > 1 > 145 - 161

Diatoms are a diverse group of phytoplankton usually dominating areas characterized by rapidly shifting light conditions. Because of their high growth rates and interesting biochemical profile, their biomass is considered for various commercial applications. This study aimed at identifying strains with superior growth in a photobioreactor (PBR) by screening the natural intraspecific diversity of...

article

Interplay among photoreceptors determines the strategy of coping with excess light in tomato

Aida Shomali, Sasan Aliniaeifard, Yousef Yari Kamrani, Mahmoud Lotfi, more

The Plant Journal > 118 > 5 > 1423 - 1438

This study investigates photoreceptor's role in the adaption of photosynthetic apparatus to high light (HL) intensity by examining the response of tomato wild type (WT) (Solanum lycopersicum L. cv. Moneymaker) and tomato mutants (phyA, phyB1, phyB2, cry1) plants to HL. Our results showed a photoreceptor‐dependent effect of HL on the maximum quantum yield of photosystem II (F_v/F_m) with phyB1 exhibiting...

article

Evaluation of human skin response to solar‐simulated radiation in an ex vivo model: Effects and photoprotection of L‐Carnosine

Cristina Girardi, Francesca Benato, Marco Massironi, Vincenzo Vindigni, more

Photochemistry and Photobiology > 100 > 3 > 733 - 745

Sunlight, and more specifically the UV component, induces several skin damages, including sunburns, erythema and photoaging. The purpose of this work is to set up an ex vivo human skin model to assess the capacity of active principles in protecting skin from the deleterious effects of solar radiation. Ex vivo human skin biopsies were cultured in an air–liquid interface and exposed to solar‐simulated...

article

New trends on personalized sunscreens

Tamara Gracia‐Cazaña, José Aguilera, Alba Navarro‐Bielsa, Salvador González, more

Photodermatology, Photoimmunology & Photomedicine > 40 > 3 > n/a - n/a

Background/Purpose Nowadays, there are emerging trends in customized and personalized photoprotection, focusing on the innovative approaches to enhance sun protection efficacy tailored to individual needs. Methods We conducted an electronic search of the following databases: MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, Cochrane Skin Group Specialised Skin Register, and TESEO. Specific...

INFONA - science communication portal

Search results

Ultraviolet and photosynthetically active radiation can both induce photoprotective capacity allowing barley to overcome high radiation stress

Photosensibilité du lupus érythémateux

Photoprotection de l’enfant et de l’adolescent

Chronic actinic dermatitis and photoprotection

La photoprotection

Lupus et soleil

Intervening dark periods negatively affect the photosynthetic performance of Chlamydomonas reinhardtii during growth under fluctuating high light

An important step towards the comprehensive sun protection: Blue‐light exposure inhibits DNA repair in reconstituted human skin and a broadband sunscreen avoids this inhibition

Pediatric parenteral nutrition and hydroperoxide toxicity: Evaluation of the effectiveness of photoprotection medical devices

Blue light impairs the repair of UVB‐induced pyrimidine dimers in a human skin model

Challenges of tinted sunscreen in skin of color

The photosynthetic performance and photoprotective role of carotenoids response to light stress in intertidal red algae Neoporphyra haitanensis

Sunscreens prescribed to patients with skin of color and/or with melasma: A survey of 221 dermatologists and dermatology residents in Spain

Psb28 protein is indispensable for stable accumulation of PSII core complexes in Arabidopsis

Redox regulation in chloroplast thylakoid lumen: The pmf changes everything, again

Sunproofing from within: A deep dive into oral photoprotection strategies in dermatology

Skeletonema marinoi ecotypes show specific habitat‐related responses to fluctuating light supporting high potential for growth under photobioreactor light regime

Interplay among photoreceptors determines the strategy of coping with excess light in tomato

Evaluation of human skin response to solar‐simulated radiation in an ex vivo model: Effects and photoprotection of L‐Carnosine

New trends on personalized sunscreens

Filter options

Publication date

Content availability

Publication type

Publication language

Keywords

Data set

INFONA - science communication portal

Search results

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Publication language

Keywords

Data set

Reporting an error / abuse

Sending the report failed

Accessibility options