Results 11 to 20 of about 2,236 (202)
Pteridines, 2015 Folic acid and pterin derivatives are important heterocyclic compounds found in a variety of biological systems and have been shown to be photochemically active. Understanding the amount of binding that various pterins have with biological macromolecules
Christopher Martin, Michael Soniat
exaly +3 more sources
Insights into Molecular Structure of Pterins Suitable for Biomedical Applications [PDF]
International Journal of Molecular Sciences, 2022 Pterins are an inseparable part of living organisms. Pterins participate in metabolic reactions mostly as tetrahydropterins. Dihydropterins are usually intermediates of these reactions, whereas oxidized pterins can be biomarkers of diseases.
Yuliya Vechtomova +2 more
exaly +3 more sources
Pteridines, 2018 A concise account of pterins in chemistry and biology and their applications in molecular sensors including their optical spectroscopic properties are described.
Goswami Shyamaprosad +3 more
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Plasma levels of soluble VEGF receptor isoforms, circulating pterins and VEGF system SNPs as prognostic biomarkers in patients with acute coronary syndromes [PDF]
BMC Cardiovascular Disorders, 2018 Background Development of collateral circulation in coronary artery disease is cardio-protective. A key process in forming new blood vessels is attraction to occluded arteries of monocytes with their subsequent activation as macrophages. In patients from
Edward C. A. Marks +16 more
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Pterins as Sensors of Response to the Application of Fe3+-Dextran in Piglets
Sensors, 2010 The aim of the presented study was to assess the effect of a single administration of Fe3+-dextran on immune cell counts and pterin biomolecule production as novel sensors of the piglets' immune system activation, and to determine concentrations of ...
Klara Breinekova +2 more
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Investigation of Spectra and Ionization Constants of 8-Alkyl Pterins by Fluorimetry
Pteridines, 1993 Spectrofluorimetric studies of the properties of 8-alkyl-pterins arc reported, together with preliminary results on the use of fluorimetry in studying the binding of these new mechanism-based substrates to dihydrofolate reductase (DHFR).
Jill Gready, Paul Wormell
exaly +2 more sources
Segawa Syndrome, a Dramatic Response to Dopamine [PDF]
Case Reports in Neurological MedicineSegawa syndrome usually manifests as dystonia, disturbance of gait with fatigue, and may be confused with spasticity. Also known as dopamine-responsive dystonia (DRD), it should be considered in any child who presents with paroxysmal or progressive ...
Omkar Dhungel +4 more
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An Overview of Pterin Analysis in Biological Samples: From Occurrence and Properties to Sample Pretreatment Combined With Hyphenated Separation Techniques. [PDF]
J Sep SciABSTRACT Pterins are a structurally diverse group of biologically active compounds within the pteridine family, with key roles in pigmentation, redox metabolism, light sensing, and cellular signaling across a wide range of organisms. Their quantification in biological samples is analytically demanding due to their high polarity, chemical instability ...
Brejcha J, Bosakova Z.
europepmc +2 more sources
Synthesis, Redox and Spectroscopic Properties of Pterin of Molybdenum Cofactors
Molecules, 2022 Pterins are bicyclic heterocycles that are found widely across Nature and are involved in a variety of biological functions. Notably, pterins are found at the core of molybdenum cofactor (Moco) containing enzymes in the molybdopterin (MPT) ligand that ...
Kyle J. Colston, Partha Basu
doaj +1 more source
Pterin-based pigmentation in animals [PDF]
Biology Letters, 2021 Pterins are one of the major sources of bright coloration in animals. They are produced endogenously, participate in vital physiological processes and serve a variety of signalling functions. Despite their ubiquity in nature, pterin-based pigmentation has received little attention when compared to other major pigment classes.
Pedro Andrade, Miguel Carneiro
openaire +2 more sources