Results 41 to 50 of about 1,847 (196)

Triplet state magnetic resonance and fluorescence spectroscopy of metal-substituted hemoglobins.

, 1997
Fluorescence detected magnetic resonance (FDMR) spectra detected at 596 nm of zinc-substituted hemoglobins at 4.2 K show a split D-E transition, which is not observed for zinc protoporphyrins ligated by methylimidazole in glasses.
Schaafsma, T.J., Polm, M.W.
core   +1 more source

Clinical Trial: Predicting Response to Iron Therapy in Patients With Active Inflammatory Bowel Disease Using Hepcidin and Functional Iron Indices: A Multicentre Randomised Trial

Alimentary Pharmacology &Therapeutics, EarlyView.
Hepcidin levels predict response to iron therapy and support route selection for iron therapy in patients with active inflammatory bowel disease: higher levels favour IV iron, while lower levels indicate likely oral response. Ferritin‐based indices, particularly transferrin/log10(ferritin) and sTfR/log10(ferritin), offer reliable alternatives. ABSTRACT
Lola J. M. Koppelman, Roberta Loveikyte, Rogier L. Goetgebuer, Sander van der Marel, Annemarie C. de Vries, Gerard Dijkstra, Andrea E. van der Meulen‐de Jong, on behalf of the Dutch Iron Study Group, M. Duijvestein, M. van der Have, C. Horjus, W. G. N. Mares, Z. Mujagic, B. Oldenburg, R. West   +14 more
wiley   +1 more source

Optimisation of the formation and distribution of protoporphyrin IX in the urothelium: An in vitro approach

, 1999
PURPOSE: To optimize conditions for photodynamic detection (PDD) and photodynamic therapy (PDT) of bladder carcinoma, urothelial accumulation of protoporphyrin IX (PpIX) and conditions leading to cell photodestruction were studied. MATERIALS AND METHODS:
Sedmera, D., Jichlinski, P., Kucera, P., Marti, A., Van den Bergh, H., Lange, N.   +5 more
core   +1 more source

Afamelanotide improves quality of life and light tolerance in Austrian erythropoietic protoporphyria patients

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background Erythropoietic protoporphyria (EPP) is a rare genetic disorder characterized by severe phototoxic reactions that occur within minutes of light exposure. In clinical studies, afamelanotide has been shown to prolong pain‐free sun exposure, improve quality of life, and reduce the frequency and severity of phototoxic reactions ...
Magdalena Seidl‐Philipp, Hanna Schratter, Johanna Auer, Gerold Schwantzer, Maximilian Lammer, Philipp Hinteregger, Ines Vergeiner, Robert Gruber, Peter Wolf, Angelika Hofer   +9 more
wiley   +1 more source

Metalloprotoporphyrin Inhibition of HCV NS3-4A Protease: Structure–Activity Relationships

Drug Design, Development and Therapy, 2020
Katherine Hu, 1, 2 Zhaowen Zhu, 1, 2 Meleah M Mathahs, 1, 2 Huy Tran, 1, 2 Jerry Bommer, 3, 4 Charles A Testa, 5 Warren N Schmidt 1, 2 1Department of Internal Medicine and Research Service, Veterans Affairs Medical Center, Iowa City, IA 52246, USA ...
Hu K, Zhu Z, Mathahs MM, Tran H, Bommer J, Testa CA, Schmidt WN   +6 more
doaj  

Unraveling the active site cover of coproheme decarboxylase from Listeria monocytogenes

The FEBS Journal, EarlyView.
During heme biosynthesis in Gram‐positive bacteria, coproheme decarboxylase (ChdC) catalyzes the conversion of four‐propionate substrate coproheme to the two propionate product heme b. Its active site is universally covered by a flexible linking loop. This study identifies an important histidine residue, which stabilizes the loop in a ChdC homolog.
Nikolaus Falb, Dominik Hörtnagel, Chris Oostenbrink, Paul G. Furtmüller, Stefan Hofbauer   +4 more
wiley   +1 more source

Zinc Protoporphyrin: A Metabolite with a Mission [PDF]

Clinical Chemistry, 1999
AbstractZinc protoporphyrin (ZnPP) is a normal metabolite that is formed in trace amounts during heme biosynthesis. The final reaction in the biosynthetic pathway of heme is the chelation of iron with protoporphyrin. During periods of iron insufficiency or impaired iron utilization, zinc becomes an alternative metal substrate for ferrochelatase ...
R F, Labbé, H J, Vreman, D K, Stevenson
openaire   +2 more sources

Pentatricopeptide repeat proteins in crops: Advances in functional mechanisms and breeding applications

Journal of Integrative Plant Biology, EarlyView.
Pentatricopeptide repeat proteins coordinate nucleus‐organelle communication by modulating RNA metabolism within chloroplasts and mitochondria. This review highlights how they control critical processes like photosynthesis, seed development, fertility restoration, and stress survival in crops, and explores their potential as programmable tools for RNA ...
Mingming Wu, Maohong Cai, Rongrong Zhai, Jing Ye, Guofu Zhu, Faming Yu, Shenghai Ye, Xiaoming Zhang   +7 more
wiley   +1 more source

GmDOF3.1‐GmCPX Module Regulates Nodulation and Nitrogen Fixation Abilities in Soybean

Plant Biotechnology Journal, EarlyView.
ABSTRACT Soybean nodule nitrogen fixation is very important, which can provide a large amount of nitrogen supply for its own growth and that of other crops, but the mechanism is largely unclear. In the present study, a coproporphyrinogen oxidase gene, GmCPX, was identified to facilitate soybean nodulation and nitrogen‐fixation under the regulation of ...
Xinzhu Xing, Zhanwu Yang, Zhenqi Shao, Hui Du, Hua Zhang, Huantao Zhang, Xiaobo Huo, Wenlong Li, Youbin Kong, Xihuan Li, Caiying Zhang   +10 more
wiley   +1 more source

Vestigial Plastids in Parasitic Plants: Evolutionary Remnants or Adaptive Innovations?

Plant, Cell &Environment, EarlyView.
ABSTRACT Throughout the evolutionary history of plants, chloroplasts originating from a cyanobacterial endosymbiosis have undergone remarkable adaptation and specialization, giving rise to a multitude of plastid types. The evolution toward parasitism in plants represents a particularly extreme case of such specialization.
Laia Jené, Sergi Munné‐Bosch
wiley   +1 more source