Results 31 to 40 of about 495 (140)

Characterization of Antioxidant Activity of Heated Mycosporine-like Amino Acids from Red Alga Dulse Palmaria palmata in Japan

Marine Drugs, 2022
We recently demonstrated the monthly variation and antioxidant activity of mycosporine-like amino acids (MAAs) from red alga dulse in Japan. The antioxidant activity of MAAs in acidic conditions was low compared to that in neutral and alkali conditions ...
Yuki Nishida, Wataru Saburi, Yoshikatsu Miyabe, Hideki Kishimura, Yuya Kumagai   +4 more
doaj   +1 more source

Amino Acid-Coupled Bromophenols and a Sulfated Dimethylsulfonium Lanosol from the Red Alga Vertebrata lanosa

Marine Drugs, 2022
Vertebrata lanosa is a red alga that can commonly be found along the shores of Europe and North America. Its composition of bromophenols has been studied intensely.
Joshua Jacobtorweihen, Marthe Schmitt, Verena Spiegler   +2 more
doaj   +1 more source

Extraction, Isolation and Characterization of Mycosporine-like Amino Acids from Four Species of Red Macroalgae

Marine Drugs, 2021
Marine macroalgae is known to be a good source of mycosporine-like amino acids (MAAs), especially red macroalgae. As a new type of active substance with commercial development prospects, the current progress in the extraction, isolation and ...
Yingying Sun, Xiu Han, Zhijuan Hu, Tongjie Cheng, Qian Tang, Hui Wang, Xiaoqun Deng, Xu Han   +7 more
doaj   +1 more source

Isolation of Mycosporine-like Amino Acids from Red Macroalgae and a Marine Lichen by High-Performance Countercurrent Chromatography: A Strategy to Obtain Biological UV-Filters

Marine Drugs, 2023
Marine organisms have gained considerable biotechnological interest in recent years due to their wide variety of bioactive compounds with potential applications.
Julia Vega, Daniela Bárcenas-Pérez, David Fuentes-Ríos, Juan Manuel López-Romero, Pavel Hrouzek, Félix López Figueroa, José Cheel   +6 more
doaj   +1 more source

A Method for the Isolation and Characterization of Mycosporine-Like Amino Acids from Cyanobacteria

Methods and Protocols, 2018
This report provides a broadly applicable and cost-effective method for the purification of mycosporine-like amino acids (MAAs) from cyanobacteria. As MAAs are known to have multiple bioactivities for health and beauty, a universal isolation method of ...
Siripat Ngoennet, Yasuhiro Nishikawa, Takashi Hibino, Rungaroon Waditee-Sirisattha, Hakuto Kageyama   +4 more
doaj   +1 more source

Anti-Inflammation Activities of Mycosporine-Like Amino Acids (MAAs) in Response to UV Radiation Suggest Potential Anti-Skin Aging Activity

Marine Drugs, 2014
Certain photosynthetic marine organisms have evolved mechanisms to counteract UV-radiation by synthesizing UV-absorbing compounds, such as mycosporine-like amino acids (MAAs).
Sung-Suk Suh, Jinik Hwang, Mirye Park, Hyo Hyun Seo, Hyoung-Shik Kim, Jeong Hun Lee, Sang Hyun Moh, Taek-Kyun Lee   +7 more
doaj   +1 more source

Stratum Corneum Hydration and Skin Surface pH Variation Indicate that Organ Blood Flow Is Regulated by Meridian Activity at Certain Hours

Medical Sciences, 2014
Day and night are regular occurrences in nature, and the organs and tissues in living bodies follow this cycle. The sympathetic nervous system (SNS) at various time points regulates organ excitation to maintain healthy functions in the living body.
Li-Fan Chuang, Hong-Nong Chou, Chin-Kong Hsu, Hung-Shih Chou, Ping-Jyun Sung, Fu-Gin Chen   +5 more
doaj   +1 more source

The Counterbalance of Skin Metabolism on Orbits and Diseases

Medical Sciences, 2015
Human organ functions are regulated by the nervous system. When human cells receive a message, this message is transmitted to the nervous system through a series of signal transmission processes.
Li-Fan Chuang, Chin-Kong Hsu, Hong-Nong Chou, Hung-Shih Chou, Ping-Jyun Sung, Chia-Ching Chen, Fu-Gin Chen   +6 more
doaj   +1 more source

The distribution of mycosporine-like amino acids in phytoplankton across a Southern Ocean transect

Frontiers in Marine Science, 2022
Interactions between phytoplankton and ultraviolet radiation (UVR: 280 – 400 nm) are undergoing changes dictated by variability in ocean temperature, the depth of mixed layers, nutrient availability, and the thickness of the ozone layer.
Elliot L. Weiss, Mattias Rolf Cape, B. Jack Pan, Maria Vernet, Chase C. James, Tim J. Smyth, Sun-Yong Ha, José L. Iriarte, B. Greg Mitchell   +8 more
doaj   +1 more source

The Protective Effect of Mycosporine-Like Amino Acids (MAAs) from Porphyra yezoensis in a Mouse Model of UV Irradiation-Induced Photoaging

Marine Drugs, 2019
The objective of this research was to extract and prepare mycosporine-like amino acids (MAAs) and investigate the mechanism by which they act against UV-induced skin photoaging in Institute of Cancer Research (ICR ) mice.
Rui Ying, Zhaohui Zhang, Huiying Zhu, Bafang Li, Hu Hou   +4 more
doaj   +1 more source