Browsing by Subject "Magnetic Resonance Spectroscopy"

Article

Authenticity of the traditional Cypriot spirit "zivania" on the basis of 1H NMR spectroscopy diagnostic parameters and statistical analysis

Petrakis, Panos V.; Touris, Ioannis; Liouni, Maria; Zervou, Maria; Kyrikou, Ioanna; Kokkinofta, Rebecca I.; Theocharis, Charis R.; Mavromoustakos, Thomas M. (2005)

A previous publication (Kokkinofta et al. J. Agric. Food Chem. 2003, 51, 6233-6239) discussed the use of inductively coupled plasma spectroscopy to differentiate between the traditional Cypriot alcoholic beverage zivania ...

Article

Chemometric characterization of the cypriot spirit "Zivania"

Kokkinofta, Rebecca I.; Theocharis, Charis R. (2005)

In 42 alcoholic beverages produced in Cyprus and other countries, 26 chemical and physical-chemical variables were determined by HPLC and GC chromatography, 1H NMR and ICP spectroscopy, and other techniques. Data were ...

Article

Glucose-based spiro-isoxazolines: A new family of potent glycogen phosphorylase inhibitors

Benltifa, Mahmoud; Hayes, Joseph M.; Vidal, Sébastien; Gueyrard, David; Goekjian, Peter G.; Praly, Jean Pierre; Kizilis, Gregory; Tiraidis, Costas; Alexacou, Kyra Melinda; Chrysina, Evangelia D.; Zographos, Spyros E.; Leonidas, Demetres D.; Archontis, Georgios Z.; Oikonomakos, Nikos G. (2009)

A series of glucopyranosylidene-spiro-isoxazolines was prepared through regio- and stereoselective [3+2]-cycloaddition between the methylene acetylated exo-glucal and aromatic nitrile oxides. The deprotected cycloadducts ...

Article

Hydrophilic cationic star homopolymers based on a novel diethanol-n-methylamine dimethacrylate cross-linker for sirna transfection: Synthesis, characterization, and evaluation

Pafiti, Kyriaki S.; Mastroyiannopoulos, Nikolaos P.; Phylactou, Leonidas A.; Patrickios, Costas S. (2011)

Four cationic hydrophilic star homopolymers based on the novel hydrophilic, positively ionizable cross-linker bis(methacryloyloxyethyl)methylamine (BMEMA) were synthesized using sequential group transfer polymerization ...

Article

In vivo high-resolution magic angle spinning magnetic and electron paramagnetic resonance spectroscopic analysis of mitochondria-targeted peptide in Drosophila melanogaster with trauma-induced thoracic injury

Constantinou, Constantina; Apidianakis, Yiorgos; Psychogios, N.; Righi, V.; Mindrinos, M. N.; Khan, N.; Swartz, H. M.; Szeto, H. H.; Tompkins, R. G.; Rahme, L. G.; Aria Tzika, A. (2016)

Trauma is the most common cause of mortality among individuals aged between 1 and 44 years and the third leading cause of mortality overall in the US. In this study, we examined the effects of trauma on the expression of ...

Article

Insulin-mimetic action of vanadium compounds on osteoblast-like cells in culture

Etcheverry, S. B.; Crans, D. C.; Keramidas, Anastasios D.; Cortizo, A. M. (1997)

Vanadium compounds mimic insulin actions in different cell types. The present study concerns the insulin-like effects of three vanadium(V) derivatives and one vanadium(IV) complex on osteoblast-like (UMR106 and MC3T3E1) ...

Article

Magnetic resonance spectroscopy of live Drosophila melanogaster using magic angle spinning.

Righi, V.; Apidianakis, Yiorgos; Rahme, L. G.; Tzika, A. A. (2010)

High-Resolution Magic Angle Spinning (HRMAS) proton magnetic resonance spectroscopy ((1)H-MRS) is a novel non-destructive technique that improves spectral line-widths and allows high-resolution spectra to be obtained from ...

Article

Nanoscopic cationic methacrylate star homopolymers: Synthesis by group transfer polymerization, characterization and evaluation as transfection reagents

Georgiou, Theoni K.; Vamvakaki, Maria; Patrickios, Costas S.; Yamasaki, E. N.; Phylactou, Leonidas A. (2004)

Seven star polymers with degrees of polymerization (DPs) of the arms from 10 to 100 and dimensions in the nanometer range were prepared using sequential group transfer polymerization of 2-(dimethylamino)-ethyl methacrylate ...

Article

New antimony(III) halide complexes with dithiocarbamate ligands derived from thiuram degradation: The effect of the molecule's close contacts on in vitro cytotoxic activity

Urgut, O. S.; Ozturk, I. I.; Banti, Christina N.; Kourkoumelis, Nikolaos; Manoli, Maria; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K. (2016)

Antimony(III) halide complexes of the formulae {[SbBr(Me2DTC)2]n} (1), {[SbI(Me2DTC)2]n} (2) and {[(Me2DTC)2Sb(μ2-I)Sb(Me2DTC)2]+.I3-} (3) (Me2DTC = dimethyldithiocarbomate) were synthesized from SbX3, (X = Br or I) and ...

Article

Nitrogen mustard up-regulates Bcl-2 and GSH and increases NTP and PCr in HT-29 colon cancer cells

Boddie Jr., A. W.; Constantinou, Andreas I.; Williams, C.; Reed, A. (1998)

We hypothesized that unexplained increases in nucleoside triphosphates (NTP) observed by 31P magnetic resonance spectroscopy (MRS) after treatment of tumours by DNA-damaging agents were related to chemotherapy-induced ...

Article

Plaque imaging using ultrasound, magnetic resonance and computer tomography: A review

Suri, J. S.; Pattichis, Constantinos S.; Li, C.; Macione, J.; Yang, Z.; Fox, M. D.; Wu, D.; Laxminarayan, S. (2005)

Different classifications have been proposed in the literature for the characterization of atherosclerotic plaque morphology, resulting in considerable confusion. For example plaques containing medium of high level uniform ...

Article

Solid state and aqueous solution characterization of rectangular tetranuclear VIV/V-p-semiquinonate/hydroquinonate complexes exhibiting a proton induced electron transfer

Drouza, Chryssoula; Keramidas, Anastasios D. (2008)

Reaction of the non-innocent dinucleating ligand 2,5-bis[N,N- bis(carboxymethyl) arninomethyl]hydroquinone (H6bicah) with VO 2+ and VO43- salts in water in the pH range 2 to 4.5 provides a series of novel tetranuclear VIV ...

Article

Superhelices of poly[2-(acetoacetoxy)ethyl methacrylate]

Schlaad, H.; Krasia-Christoforou, T.; Antonietti, M. (2004)

Poly[2-(acetoacetoxy) ethyl methacrylate] (PAEMA) homopolymers were found to self-assemble into hierarchical superstructures, that is, double-stranded helical tubes of either screw sense (scanning force microscopy). Both ...

Article

Synthesis and study of the cancer cell growth inhibitory properties of α-, γ-tocopheryl and γ-tocotrienyl 2-phenylselenyl succinates

Vraka, Panayiota S.; Drouza, Chryssoula; Rikkou, Maria P.; Odysseos, Andreani D.; Keramidas, Anastasios D. (2006)

Vitamin E succinate selenium-conjugated molecules were synthesized and their apoptogenic properties were evaluated. 4-Methyl-2-phenylselenyl succinate (4) was prepared by the reaction of sodium benzeneselenolate with ...

Article

Synthesis of fused 1,2,4-dithiazines and 1,2,3,5-trithiazepines

Koyioni, Maria G.; Manoli, Maria; Koutentis, Panayiotis Andreas (2014)

Reacting ( Z)-N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-1H-pyrazol-5-amines 5 with Et2NH and then with concd H2SO4 gives 5H-pyrazolo[3,4-e ][1,2,4]dithiazine-3-carbonitriles 7 in good yields (74-85%) and 6H-pyrazolo-[3,4 ...

Article

Synthesis, characterization and biological studies of new antimony(III) halide complexes with ω-thiocaprolactam

Ozturk, I. I.; Banti, Christina N.; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Kourkoumelis, Nikolaos; Charalabopoulos, Konstantinos A.; Hadjikakou, Sotiris K. (2012)

Three new antimony(III) halide complexes (SbX 3, X = Cl, Br and I) with the heterocyclic thione ω-thiocaprolactam (1-azacycloheptane-2- thione, (Hthcl)) of formulae {[SbCl 2(μ 2-Cl)(Hthcl) 2] n} (1), {[(SbBr 2(μ 2-Br)(Hthcl) ...

Article

Synthesis, characterization, and study of octanuclear iron-oxo clusters containing a redox-active Fe4O4-cubane core

Baran, P.; Boča, R.; Chakraborty, I.; Giapintzakis, John; Herchel, R.; Huang, Q.; McGrady, J. E.; Raptis, R. G.; Sanakis, Y.; Simopoulos, A. (2008)

A one-pot synthetic procedure yields the octanuclear FeIII complexes Fe8(μ4-O)4(μ-pz*) 12X4, where X = Cl and pz* = pyrazolate anion (pz = C3H3N2-) (1), 4-Cl-pz (2), and 4-Me-pz (3) or X = Br and pz* = pz (4). The crystal ...

Article

Synthetic analogs for oxovanadium(IV/V)-glutathione interaction: An NMR, EPR, synthetic and structural study of oxovanadium(IV/V) compounds with sulfhydryl-containing pseudopeptides and dipeptides

Tasiopoulos, Anastasios J.; Troganis, Anastassios N.; Deligiannakis, Yiannis G.; Evangelou, Angelos M.; Kabanos, Themistoklis A.; Woollins, J. D.; Slawin, A. (2000)

The reaction of [VO(CH3COO)2(phen)] (phen = 1,10-phenanthroline) with the sulfhydryl-containing pseudopeptides (scp), N-(2-mercaptopropionyl)glycine (H3mpg), N-(2-mercaptopropionyl)cysteine (H4m2pc), N-(3-mercaptopropion ...

Article

Vanadium(V) compounds with the bis-(hydroxylamino)-1,3,5-triazine ligand, H2bihyat: Synthetic, structural, and physical studies of [V 2VO3(bihyat)2] and of the enhanced hydrolytic stability species cis-[VVO2(bihyat)] -

Nikolakis, Vladimiros A.; Tsalavoutis, John T.; Stylianou, Marios; Evgeniou, E.; Jakusch, T.; Melman, A.; Sigalas, Michael P.; Kiss, Tamás; Keramidas, Anastasios D.; Kabanos, Themistoklis A. (2008)

Reaction of the ligand 2,6-bis[hydroxy(methyl)amino]-4-morpholino-1,3,5- triazine (H2bihyat) with NaVVO3 in aqueous solution followed by addition of either Ph4PCl or C(NH 2)3Cl, respectively, gave the mononuclear vanadium(V) ...