Results 1 to 10 of about 25,801 (180)

Effects of niacin restriction on sirtuin and PARP responses to photodamage in human skin. [PDF]

PLoS ONE, 2012
Sirtuins (SIRTs) and poly(ADP-ribose) polymerases (PARPs), NAD(+)-dependent enzymes, link cellular energy status with responses to environmental stresses.
Claudia A Benavente, Stephanie A Schnell, Elaine L Jacobson   +2 more
doaj   +6 more sources

Coreopsis tinctoria Nutt. attenuates ultraviolet A photodamage by suppressing endoplasmic reticulum stress-induced apoptosis via Nrf2 crosstalk [PDF]

Frontiers in Pharmacology
BackgroundSolar ultraviolet A (UVA) induces skin photodamage primarily by triggering endoplasmic reticulum (ER) stress, leading to misfolded protein accumulation and apoptosis. Coreopsis tinctoria Nutt.
Ling Liang, Xin Nie, Nan Zhao, Menggeng Li, Mingjie Li, Zhiwei Li, Man Wu, Xuanmin Wu, Cheuk-Lun Lee, Peng Shu, Jiangming Zhong   +10 more
doaj   +2 more sources

miRNA-21-5p targeting PTEN to regulate PI3K/Akt/mTOR pathway in retinal pigment epithelial cell photodamage [PDF]

International Journal of Ophthalmology
AIM: To highlight the importance of microRNA (miRNA)-21-5p in directing the phosphatase and tensin homolog (PTEN) gene to control the phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway in retinal pigment ...
Juan Li, Ruo-Di Shi, Qing Li, Chen Xu, Yang Yu   +4 more
doaj   +2 more sources

Effect of different doses of UVA1 phototherapy on skin photodamage in immune-contact sensitized mice [PDF]

Xin yixue, 2023
Objective To evaluate the degree of skin injury caused by different doses of UVA1 irradiation and balance the relationship between UVA1 phototherapy and photodamage， aiming to maximize the therapeutic benefits. Methods Different doses of UVA1 irradiation
Deng Huiyan, Tian Xin, Li Huaping, Chen Jiaoquan, Zhu Huilan
doaj   +1 more source

Development of Modified Farquhar–von Caemmerer–Berry Model Describing Photodamage of Photosynthetic Electron Transport in C₃ Plants under Different Temperatures

Plants, 2023
Photodamage of photosynthetic electron transport is a key mechanism of disruption of photosynthesis in plants under action of stressors. This means that investigation of photodamage is an important task for basic and applied investigations.
Daria Ratnitsyna, Lyubov Yudina, Ekaterina Sukhova, Vladimir Sukhov   +3 more
doaj   +1 more source

Multiparametric Quantitative Analysis of Photodamage to Skin Using Optical Coherence Tomography

Sensors, 2023
Ultraviolet (UV) irradiation causes 90% of photodamage to skin and long-term exposure to UV irradiation is the largest threat to skin health. To study the mechanism of UV-induced photodamage and the repair of sunburnt skin, the key problem to solve is ...
Han Tang, Chen Xu, Yakun Ge, Mingen Xu, Ling Wang   +4 more
doaj   +1 more source

In Vivo Identification of Skin Photodamage Induced by Fractional CO₂ and Picosecond Nd:YAG Lasers with Optical Coherence Tomography

Diagnostics, 2022
Fractional laser treatment is commonly used for dermatological applications, enabling effective induction of collagen regeneration and significantly reducing recovery time.
Chau Yee Ng, Tai-Ang Wang, Hsiang-Chieh Lee, Bo-Huei Huang, Meng-Tsan Tsai   +4 more
doaj   +1 more source

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

Photosynthetica, 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

Awake chronic mouse model of targeted pial vessel occlusion via photothrombosis [PDF]

, 2020
Animal models of stroke are used extensively to study the mechanisms involved in the acute and chronic phases of recovery following stroke. A translatable animal model that closely mimics the mechanisms of a human stroke is essential in understanding ...
Boas, David A., Chen, Ichun Anderson, Cheng, Xiaojun, Erdener, Sefik Evren, Kılıç, Kıvılcım, Kura, Sreekanth, Lee, Blaire Ss, Postnov, Dmitry, Sunil, Smrithi, Tang, Jianbo   +9 more
core   +1 more source

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

Photosynthetica, 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, S. NAGAR, M. THAKUR, P. SURIYAKUMAR, S. KATARIA, A.K. SHANKER, M. LANDI, A. ANAND   +7 more
doaj   +1 more source