Results 91 to 100 of about 34,452 (261)

CHARACTERIZATION OF A MODIFIED GRAPHITE ELECTRODE OBTAINED BY HEMIN ELECTROPOLYMERISATION

Studia Universitatis Babes-Bolyai Chemia, 2015
A new modified electrode (G/polyHm) was obtained by electropolymerisation of iron (III) protoporphyrin (IX) (hemin, Hm) at the surface of a graphite electrode (G), by repetitive scanning the potential between -0.85 and 0 V vs. Ag/AgCl,KClsat.
Graziella Liana TURDEAN
doaj  

Human IDO2 exhibits unique binding affinities distinct to those of human IDO1

The FEBS Journal, EarlyView.
Although indoleamine 2,3‐dioxygenase 2 (IDO2) is highly homologous to IDO1, it displays markedly lower catalytic activity. We found that IDO2 binds L‐tryptophan (L‐Trp) in a flipped orientation stabilized by the IDO2‐specific residue His143. Replacement of His143 with the IDO1‐equivalent tyrosine restored an IDO1‐like binding mode and increased ...
Shunsuke Nogi, Ayumu Takahashi, So Murakami, Nami Adachi, Tina Fujimoto, Yohta Fukuda, Taku Yamashita, Tsuyoshi Inoue, Hirofumi Tsujino   +8 more
wiley   +1 more source

A Comparative Analysis of Maillard‐Derived α‐Dicarbonyl Compounds and Advanced Glycation End Products in Fresh, Wet, Kibble, and Freeze‐Dried Dog Foods

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Thermal processing of pet foods can lead to the formation of harmful Maillard reaction products (MRPs), which may compromise nutritional quality and pose health risks to companion animals. This study compared the levels of MRPs in 41 commercial dog foods, including fresh (n = 15), kibble (n = 13), wet (n = 10), freeze‐dried (n = 2), and cold ...
Tolgahan Kocadağlı, Ciara Clarke, Vural Gökmen   +2 more
wiley   +1 more source

The Hemoprotein Hhy1 Promotes Heme‐Dependent Catalase Activity of Ctt1

Molecular Microbiology, EarlyView.
A Schizosaccharomyces pombe strain deficient in heme (hem1Δ) and siderophore (Fc) biosynthesis, as well as high‐affinity iron (Fe) uptake (blue), was used to uncover the hemoprotein Hhy1 that promotes the heme‐dependent activity of the catalase Ctt1. In contrast, hhy1Δ cells exhibit reduced Ctt1 activity and increased sensitivity to oxidative stress ...
Tobias Vahsen, Samuel Plante, Berthy Mbuya, Simon Labbé   +3 more
wiley   +1 more source

The Outcome of Intracellular Selenomonas sputigena and its Impact on Gingival Keratinocytes

Molecular Oral Microbiology, EarlyView.
ABSTRACT Selenomonas sputigena is an understudied oral pathobiont associated with periodontitis and dental caries. We recently demonstrated that S. sputigena binds to gingival epithelial cells (GECs), where afterwards the bacterium causes robust in vitro pro‐inflammatory cytokine production and migration of monocytes and neutrophils.
Colin G. Hawkes, Travis J. Chiarelli, Doaa N. Abdallah, Grayson Way, Huiping Zhou, Jason A. Carlyon, Daniel P. Miller   +6 more
wiley   +1 more source

N‐methylation of histidine to tune tautomeric preferences in histidine‐heme coordination and enzyme‐mimetic catalysis

Smart Molecules
Enzymes with active sites involving histidine selectively utilize either the δ‐ or ε‐nitrogen atom (Nδ or Nε) of the histidine imidazole for catalysis.
Ruikai Du, Yunbo Lv, Haifeng Wu, Baoli Zhang, Yuanxi Liu, Shichao Xu, Shan Li, Zhen‐Gang Wang   +7 more
doaj   +1 more source

Hemin enhances the 5-aminolevulinic acid-photodynamic therapy effect through the changes of cellular iron homeostasis

Photodiagnosis and Photodynamic Therapy
Background: Photodynamic therapy (PDT) has been utilized as a promising alternative cancer treatment due to its minimum invasiveness over the years. Exogenous 5-aminolevulinic acid (ALA) triggers protoporphyrin IX (PpIX) accumulation, which happens in ...
Anantya Pustimbara, Chenhan Li, Shun-ichiro Ogura   +2 more
doaj   +1 more source

Random Mutagenesis in Porphyromonas gingivalis Enables Isolation of Mutants With Enhanced Secreted Protease Activity

Molecular Oral Microbiology, EarlyView.
ABSTRACT Porphyromonas gingivalis is a key pathogen in periodontitis, with secreted proteases as major virulence factors. We developed a screening method to generate and identify P. gingivalis mutants with elevated protease activity. Mutations were induced using the mutagens 2,6‐diaminopurine (2,6‐DAP) or ethyl methanesulfonate (EMS), and the ...
Takeru Nakabayashi, Satoshi Yuhara, Kosei Tanaka   +2 more
wiley   +1 more source

The MdERF17–MdbHLH149 Module Mediates Ethylene‐Induced Starch Degradation Through the Transcriptional Repression of α‐Amylase MdAMY1 in Apple

Plant Biotechnology Journal, EarlyView.
ABSTRACT The ripening of climacteric fruits is characterised by a sharp increase in ethylene production, coinciding with the conversion of starch into soluble sugars. However, the regulatory interplay between ethylene and starch degradation in apple remains largely unclear. Here, we report a negative correlation between starch accumulation and ethylene
Fan Xiao, Chu‐Kun Wang, Jiu‐Cheng Zhang, Xin‐Yue Jian, Ying Xiang, Wang‐Jiang Zhang, Jin‐Chao Meng, Wen‐Yan Wang, Da‐Gang Hu   +8 more
wiley   +1 more source

Novel and emerging antimicrobial strategies in the management of oral infections

Periodontology 2000, EarlyView.
Abstract Background Antibiotics marked a pivotal turning point in human civilization, enhancing social interactions and extending human life expectancy. In addition to their success in treating systemic infectious diseases, they have significantly improved periodontal treatment outcomes as an adjunct therapy.
Ozge Unlu, Nil Yakar, Alpdogan Kantarci
wiley   +1 more source