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Solution equilibrium and redox properties of metal complexes with 2-formylpyridine guanylhydrazone derivatives: Effect of morpholine and piperazine substitutions.
J Inorg Biochem
March 2025
Department of Molecular and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7-8, H-6720 Szeged, Hungary. Electronic address:
Schiff bases derived from aminoguanidine are extensively investigated for their structural versatility. The tridentate 2-formylpyridine guanylhydrazones act as analogues of 2-formyl or 2-acetylpyridine thiosemicarbazones, where the thioamide unit is replaced by the guanidyl group. Six derivatives of 2-formylpyridine guanylhydrazone were synthesized and their proton dissociation and complex formation processes with Cu(II), Fe(II) and Fe(III) ions were studied using pH-potentiometry, UV-visible, NMR and electron paramagnetic resonance spectroscopic methods.
View Article and Find Full Text PDFAncient genomes reveal Avar-Hungarian transformations in the 9th-10th centuries CE Carpathian Basin.
Sci Adv
December 2024
Institute of Archaeogenomics, HUN-REN Research Centre for the Humanities, Budapest, Hungary.
Article Synopsis
- The Carpathian Basin experienced significant demographic changes during the Early Medieval period, influenced by Avar rule for about 250 years and the arrival of early Hungarians in the late 9th century CE.
- This study analyzes 296 ancient genetic samples from Western Hungary, providing insights into the population structure and dynamics between the 5th and 11th centuries CE, focusing on specific microregions.
- The research uncovers distinct historical developments in Transdanubia, emphasizing the complex interactions and genetic integration among Hun, Avar, and Hungarian groups during and after the conquest period.
Epigenetic modulation via the C-terminal tail of H2A.Z.
Nat Commun
October 2024
Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
H2A.Z-nucleosomes are present in both euchromatin and heterochromatin and it has proven difficult to interpret their disparate roles in the context of their stability features. Using an in situ assay of nucleosome stability and DT40 cells expressing engineered forms of the histone variant we show that native H2A.
View Article and Find Full Text PDFTautology explains evolution without variation and selection. A Comment on: 'An evolutionary process without variation and selection' (2021), by Gabora .
J R Soc Interface
September 2024
CSS-RECENS, Centre for Social Science, Tóth Kálmán u. 4, H-1097 , Budapest, Hungary.
Gabora and Steel (Gabora L, Steel M. 2021 An evolutionary process without variation and selection. 18, 20210334.
View Article and Find Full Text PDFOsteopontin predicts late-time salience network-related functional connectivity in multiple sclerosis.
PLoS One
August 2024
Department of Neurology, Medical School, University of Pecs, Pecs, Hungary.
Resting-state functional magnetic resonance imaging (rs-fMRI) has been widely utilized to investigate plasticity mechanisms and functional reorganization in multiple sclerosis (MS). Among many resting state (RS) networks, a significant role is played by the salience network (SN, ventral attention network). Previous reports have demonstrated the involvement of osteopontin (OPN) in the pathogenesis of MS, which acts as a proinflammatory cytokine ultimately leading to neurodegeneration.
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