Results 21 to 30 of about 495 (140)

Protective effect of porphyra-334 on UVA-induced photoaging in human skin fibroblasts. [PDF]

Int J Mol Med, 2014
The significant increase in life expectancy is closely related to the growing interest in the impact of aging on the function and appearance of the skin. Skin aging is influenced by several factors, and solar ultraviolet (UV) irradiation is considered one of the most important causes of skin photoaging.
Ryu J, Park SJ, Kim IH, Choi YH, Nam TJ.
europepmc   +4 more sources

Acceleration of somatic cell reprogramming into the induced pluripotent stem cell using a mycosporine-like amino acid, Porphyra 334. [PDF]

Sci Rep, 2020
AbstractPorphyra 334 (P334), a mycosporine-like amino acid (MAA), is a secondary metabolite found in diverse marine and terrestrial organisms and has several beneficial effects on fibroblast proliferation, wound healing, and antioxidant activity. Here, we report that P334 accelerates the cell reprogramming process of mouse tail-tip fibroblasts (TTFs ...
Yoo J, Kim J, Lee JH, Kim H, Jang SJ, Seo HH, Oh ST, Hyeon SJ, Ryu H, Kim J, Moh SH.   +10 more
europepmc   +4 more sources

The mycosporine-like amino acids porphyra-334 and shinorine are antioxidants and direct antagonists of Keap1-Nrf2 binding.

Biochimie, 2018
Mycosporine-like amino acids (MAAs) are UVR-absorbing metabolites typically produced by cyanobacteria and marine algae, but their properties are not limited to direct sun screening protection. Herein, we examine the antioxidant activities of porphyra-334 and shinorine and demonstrate that these MAAs are prospective activators of the cytoprotective ...
Gacesa R, Lawrence KP, Georgakopoulos ND, Yabe K, Dunlap WC, Barlow DJ, Wells G, Young AR, Long PF.   +8 more
europepmc   +6 more sources

Occurrence of Mycosporine-like Amino Acids (MAAs) from the Bloom-Forming Cyanobacteria Aphanizomenon Strains

Molecules, 2022
Mycosporine-like amino acids (MAAs) are widespread in various microbes and protect them against harsh environments. Here, four different Aphanizomenon species were isolated from severely eutrophic waterbodies, Lake Dianchi and the Guanqiao fishpond ...
Hang Zhang, Yongguang Jiang, Chi Zhou, Youxin Chen, Gongliang Yu, Liping Zheng, Honglin Guan, Renhui Li   +7 more
doaj   +1 more source

Efficient Isolation of Mycosporine-Like Amino Acids from Marine Red Algae by Fast Centrifugal Partition Chromatography

Marine Drugs, 2022
Marine rhodophyta are known to synthesize specific secondary metabolites, mycosporine-like amino acids (MAAs), to protect themselves from harmful UV-radiation. Shinorine and porphyra-334 are among the most abundant representatives of this compound class.
Michael Zwerger, Stefan Schwaiger, Markus Ganzera   +2 more
doaj   +1 more source

Comprehensive Expression Profiling and Functional Network Analysis of Porphyra-334, One Mycosporine-Like Amino Acid (MAA), in Human Keratinocyte Exposed with UV-radiation. [PDF]

Mar Drugs, 2017
Mycosporine-like amino acids (MAAs) have been highlighted as pharmacologically active secondary compounds to protect cells from harmful UV-radiation by absorbing its energy. Previous studies have mostly focused on characterizing their physiological properties such as antioxidant activity and osmotic regulation.
Suh SS, Lee SG, Youn UJ, Han SJ, Kim IC, Kim S.   +5 more
europepmc   +4 more sources

Broad-spectrum sun-protective action of Porphyra-334 derived from Porphyra vietnamensis.

Pharmacognosy Res, 2010
There are enormous UV-protective compounds present in the current world market, out of which 98% give protection against UV-B range and the remaining 2% are potent against far UV-A range only. Furthermore, these synthetic compounds have various problems related to photo-stability and cross-stability.
Bhatia S, Sharma K, Namdeo AG, Chaugule BB, Kavale M, Nanda S.   +5 more
europepmc   +4 more sources

Optimization of Extraction Process, Isolation and Characterization of Mycosporine-Like Amino Acids from Four Species of Marine Red Macroalgaes

Shipin gongye ke-ji, 2022
Marine macroalgae is one of the good sources of mycosporine-like amino acids (MAAs), especially red macroalgae. As a new type of active substances with commercial development prospect, extraction, isolation and characterization of MAAs are far from ...
Xiu HAN, Liangliang QIAN, Tongjie CHENG, Yan SHEN, Xiaoqun DENG, Wenxuan ZHU, Yingying SUN   +6 more
doaj   +1 more source

The Interplay of Mycosporine-like Amino Acids between Phytoplankton Groups and Northern Krill (Thysanoessa sp.) in a High-Latitude Fjord (Kongsfjorden, Svalbard)

Marine Drugs, 2022
We investigated pigment and mycosporine-like amino acid (MAA) concentrations of phytoplankton and Northern krill (Thysanoessa sp.) in sub-Arctic Kongsfjorden. Chlorophyll a (Chl-a) concentrations in the surface and middle-layer water were 0.44 μg L−1 (±0.
Bo Kyung Kim, Mi-Ok Park, Jun-Oh Min, Sung-Ho Kang, Kyung-Hoon Shin, Eun Jin Yang, Sun-Yong Ha   +6 more
doaj   +1 more source

Predicting a New Δ‐Proton Sponge‐Base of 4,12‐Dihydrogen‐4,8,12‐triazatriangulene through Proton Affinity, Aromatic Stabilization Energy, and Aromatic Magnetism

ChemPhysChem, Volume 24, Issue 16, August 15, 2023., 2023
The newly designed Δ proton sponge base (4,12‐dihydrogen‐4,8,12‐triazatriangulene) is a strong base with proton affinity higher than that of pyridine, quinoline, or acridine. The protonation was examined via multidimensional off‐nucleus magnetic shielding (σzz(r) and σiso(r)), NICS and NICSzz scan, NBO, electron density, and Laplacian of electron ...
Muntadar A. H. Al‐Yassiri, Ralph Puchta   +1 more
wiley   +1 more source