Results 41 to 50 of about 47,716 (256)

Electric Field Stimulation of Stem Cell Culture Media Increases Oxygen Radical Uptake Capacity

Indonesian Biomedical Journal, 2023
BACKGROUND: Stem cell culture medium is garnering attention because it comprises growth factors and exosomes secreted by stem cells. In this study, stem cell culture medium was subjected to electric field stimulation using the cells alive system (CAS) to
Maki Yoshikawa, Masatoshi Oshita, Tomomi Gotoh, Yukina Tawa, Katsuaki Dan   +4 more
doaj   +1 more source

Synthesis, oxygen radical absorbance capacity, and tyrosinase inhibitory activity of glycosides of resveratrol, pterostilbene, and pinostilbene [PDF]

Bioscience, Biotechnology, and Biochemistry, 2017
Abstract The stilbene compound resveratrol was glycosylated to give its 4′-O-β-D-glucoside as the major product in addition to its 3-O-β-D-glucoside by a plant glucosyltransferase from Phytolacca americana expressed in recombinant Escherichia coli.
Daisuke, Uesugi, Hiroki, Hamada, Kei, Shimoda, Naoji, Kubota, Shin-Ichi, Ozaki, Naoki, Nagatani   +5 more
openaire   +2 more sources

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

FEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento, Danniel Pereira‐Figueiredo, Gabriella Grossi de Lima Dias, Gabriel Ferreira dos Santos, Mariana Rodrigues Pereira, Rafael Brito, Karin C Calaza   +6 more
wiley   +1 more source

Malnutrition is associated with lower oxygen radical absorbance capacity in older adults: a cross-sectional study

BMC Geriatrics
Background Reactive oxygen species may play a significant role in the aging process, and there is currently limited research that assesses the correlation between oxygen radical absorbance capacity (ORAC) and malnutrition.
Yasemin Polat, Pelin Polat, Arzu Okyar Baş, Cafer Balcı, Burcu Balam Doğu, Mustafa Cankurtaran, Meltem Gülhan Halil   +6 more
doaj   +1 more source

Effect of Gamma Irradiation on Free Radicals and the Antioxidant Properties of Walnuts

Chemistry
The present work represented results from a comprehensive study of free radicals and the antioxidant properties of irradiated walnuts. The effects of gamma irradiation on free radical generation and their stability, as well as on the antioxidant activity
Katerina Aleksieva, Ralitsa Mladenova, Sabina Taneva, Petko Denev, Yordanka Karakirova   +4 more
doaj   +1 more source

Antioxidant activity of the giant jellyfish Nemopilema�nomurai measured by the oxygen radical absorbance capacity and hydroxyl radical averting capacity methods

Molecular Medicine Reports, 2011
The giant jellyfish Nemopilema nomurai (reaching sizes of up to 2 m diameter and 150 kg), which forms dense blooms, has caused extensive damage to fisheries by overloading trawl nets, while its toxic nematocysts cause dermatological symptoms. Giant jellyfish are currently discarded on the grounds of pest control.
Kazuki, Harada, Toshimichi, Maeda, Yoshiro, Hasegawa, Takushi, Tokunaga, Shinya, Ogawa, Kyoko, Fukuda, Norie, Nagatsuka, Keiko, Nagao, Shunshiro, Ueno   +8 more
openaire   +3 more sources

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Antioxidant and Nitrite-Scavenging Capacities of Phenolic Compounds from Sugarcane (Saccharum officinarum L.) Tops

Molecules, 2014
Sugarcane tops were extracted with 50% ethanol and fractionated by petroleum ether, ethyl acetate (EtOAc), and n-butyl alcohol successively. Eight phenolic compounds in EtOAc extracts were purified through silica gel and Sephadex LH-20 column ...
Jian Sun, Xue-Mei He, Mou-Ming Zhao, Li Li, Chang-Bao Li, Yi Dong   +5 more
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

The Galloyl Catechins Contributing to Main Antioxidant Capacity of Tea Made from Camellia sinensis in China

The Scientific World Journal, 2014
Total polyphenol content, catechins content, and antioxidant capacities of green, dark, oolong, and black teas made from Camellia sinensis in China were evaluated. The total polyphenol content of 20 samples of tea was in the range of 7.82–32.36%.
Chunjian Zhao, Chunying Li, Shuaihua Liu, Lei Yang   +3 more
doaj   +1 more source