Results 181 to 190 of about 8,569 (252)
Scientific Reports, 2020 Determining the age of free-living insects, particularly of blood-sucking species, is important for human health because such knowledge critically influences the estimates of biting frequency and vectoring ability.
Jana Křemenov +2 more
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Тhio‐containing pteridines: Synthesis, modification, and biological activity
Archiv Der Pharmazie, 2022The present article is devoted to searching for biologically active agents among novel thio‐containing pteridines. Synthetic protocols based on the condensation of 5,6‐diamino‐2‐thioxo‐2,3‐dihydropyrimidin‐4(1H)‐ones with dicarbonyl compounds were ...
Maksym S Kazunin +2 more
exaly +2 more sources
Analytical Chemistry, 2013
Recent preliminary studies have implicated urinary pteridines as candidate biomarkers in a growing number of malignancies including breast cancer. While the developments of capillary electrophoresis-laser induced fluorescence (CE-LIF), high performance ...
Honglan Shi, Casey Burton, Yinfa Ma
exaly +2 more sources
Recent preliminary studies have implicated urinary pteridines as candidate biomarkers in a growing number of malignancies including breast cancer. While the developments of capillary electrophoresis-laser induced fluorescence (CE-LIF), high performance ...
Honglan Shi, Casey Burton, Yinfa Ma
exaly +2 more sources
Metabolic profiling of pteridines for determination of potential biomarkers in cancer diseases
Electrophoresis, 2011Piotr Kośliński +1 more
exaly +2 more sources
Journal of Separation Science, 2011
A simple liquid chromatographic method has been developed to achieve the complete separation and determination of a wide range of pteridinic compounds and creatinine (CREA) in urine samples, in just one run. The influences of mobile phase composition and
Anunciación Espinosa-mansilla +1 more
exaly +2 more sources
A simple liquid chromatographic method has been developed to achieve the complete separation and determination of a wide range of pteridinic compounds and creatinine (CREA) in urine samples, in just one run. The influences of mobile phase composition and
Anunciación Espinosa-mansilla +1 more
exaly +2 more sources
Determination of Pteridines in Biological Samples with an Emphasis on Their Stability
Bioanalysis, 2013Pteridines are a group of endogenous heterocyclic compounds whose concentrations in biological fluids may be increased in some disorders, such as infections, autoimmune disorders and cancer.
Lucie Novákov
exaly +2 more sources
Journal of Separation Science, 2010
Retention characteristics of ultra-HPLC (UHPLC) hybrid stationary phases (bridged ethyl hybrid (BEH) and BEH Amide) were studied in hydrophilic interaction chromatography system in the group of polar basic pteridines (neopterin, biopterin ...
Lucie Novákov
exaly +2 more sources
Retention characteristics of ultra-HPLC (UHPLC) hybrid stationary phases (bridged ethyl hybrid (BEH) and BEH Amide) were studied in hydrophilic interaction chromatography system in the group of polar basic pteridines (neopterin, biopterin ...
Lucie Novákov
exaly +2 more sources
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1975
Summary Over the pH range 1–12, pteridine is reduced at the dropping mercury electrode (DME) and pyrolytic graphite electrode (PGE) by way of three polarographic or voltammetric processes. The first, least negative process, is a reversible 2 e -2H + reduction of pteridine to 5,8-dihydropteridine.
David L. McAllister, Glenn Dryhurst
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Summary Over the pH range 1–12, pteridine is reduced at the dropping mercury electrode (DME) and pyrolytic graphite electrode (PGE) by way of three polarographic or voltammetric processes. The first, least negative process, is a reversible 2 e -2H + reduction of pteridine to 5,8-dihydropteridine.
David L. McAllister, Glenn Dryhurst
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Pteridines and affective disorders
Acta Neuropsychiatrica, 2002The pteridine tetrahydrobiopterin (BH4) is an essential cofactor in the biosynthesis of dopamine, (nor)epinephrine, serotonin and nitric oxide (NO). Furthermore, BH4 has a direct influence on release mechanisms of these neurotransmitters and on serotonin receptor binding activityimmunology.
Durk Fekkes, R. Hoekstra
openaire +4 more sources