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Showing 1 to 12 of 248 entries
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New platinum(II) complexes with benzo-thia-zole ligands.

Acta crystallographica. Section E, Crystallographic communications

Carmona-Negrón JA, Cádiz ME, Moore CE, Rheingold AL, Meléndez E.
PMID: 27006819
Acta Crystallogr E Crystallogr Commun. 2016 Feb 24;72:412-6. doi: 10.1107/S2056989016002826. eCollection 2016 Mar 01.

Four new platinum(II) complexes, namely tetra-ethyl-ammonium tri-bromido-(2-methyl-1,3-benzo-thia-zole-κN)platinate(II), [NEt4][PtBr3(C8H7NS)] (1), tetra-ethyl-ammonium tri-bromido-(6-meth-oxy-2-methyl-1,3-benzo-thia-zole-κN)platinate(II), [NEt4][PtBr3(C9H9NOS)] (2), tetra-ethyl-ammonium tri-bromido-(2,5,6-trimethyl-1,3-benzo-thia-zole-κN)platinate(II), [NEt4][PtBr3(C10H11NS)] (3), and tetra-ethyl-ammonium tri-bromido-(2-methyl-5-nitro-1,3-benzo-thia-zole-κN)platinate(II), [NEt4][PtBr3(C8H6N2O2S)] (4), have been synthesized and structurally characterized by single-crystal X-ray diffraction techniques. These species are precursors of compounds...

Septin remodeling is essential for the formation of cell membrane protrusions (microtentacles) in detached tumor cells.

Oncotarget

Østevold K, Meléndez AV, Lehmann F, Schmidt G, Aktories K, Schwan C.
PMID: 29100341
Oncotarget. 2017 Sep 11;8(44):76686-76698. doi: 10.18632/oncotarget.20805. eCollection 2017 Sep 29.

Microtentacles are mostly microtubule-based cell protrusions that are formed by detached tumor cells. Here, we report that the formation of tumor cell microtentacles depends on the presence and dynamics of guanine nucleotide-binding proteins of the septin family, which are...

Crystal structure of 16-ferrocenylmethyl-3β-hydroxy-estra-1,3,5(10)-trien-17-one: a potential chemotherapeutic drug.

Acta crystallographica. Section E, Crystallographic communications

Carmona-Negrón JA, Flores-Rivera MM, Díaz-Reyes Z, Moore CE, Rheigold AL, Meléndez E.
PMID: 27308062
Acta Crystallogr E Crystallogr Commun. 2016 May 27;72:868-71. doi: 10.1107/S2056989016008446. eCollection 2016 Jun 01.

A new ferrocene complex, 16-ferrocenylmethyl-3β-hy-droxy-estra-1,3,5(10)-trien-17-one dimethyl sulfoxide monosolvate, [Fe(C5H5)(C24H27O2)]·C2H6OS, has been synthesized and structurally characterized by single-crystal X-ray diffraction techniques. The mol-ecule crystallizes in the space group P21 with one mol-ecule of dimethyl sulfoxide. A hydrogen bond links the...

Two diffusion photopolymer for sharp diffractive optical elements recording.

Optics letters

Gallego S, Fernández R, Márquez A, Ortuño M, Neipp C, Gleeson MR, Sheridan JT, Beléndez A.
PMID: 26176434
Opt Lett. 2015 Jul 15;40(14):3221-4. doi: 10.1364/OL.40.003221.

Photopolymers as recording media are widely used in optical applications. In such materials, changes in the phase of the transmittance function are generated during exposure due to refractive index and thickness modulations. These changes arise primarily as a consequence...

Formulation and particle size reduction improve bioavailability of poorly water-soluble compounds with antimalarial activity.

Malaria research and treatment

Wang H, Li Q, Reyes S, Zhang J, Xie L, Melendez V, Hickman M, Kozar MP.
PMID: 23766925
Malar Res Treat. 2013;2013:769234. doi: 10.1155/2013/769234. Epub 2013 May 12.

Decoquinate (DQ) is highly effective at killing malaria parasites in vitro; however, it is extremely insoluble in water. In this study, solid dispersion method was used for DQ formulation which created a suitable physical form of DQ in aqueous...

[Status cataplecticus induced by abrupt withdrawal of clomipramine].

Neurologia (Barcelona, Spain)

Martínez-Rodríguez JE, Iranzo A, Santamaría J, Genís D, Molins A, Silva Y, Meléndez R.
PMID: 11864561
Neurologia. 2002 Feb;17(2):113-6.

INTRODUCTION: Cataplexy is one of the main narcoleptic symptoms and is characterized by sudden loss of muscle tone triggered by emotional stimuli while consciousness is mantained. Clomipramine is an effective treatment of cataplexy. Cataplexy that occurs repeatedly for hours...

Synthesis, Solution and Solid State Structure of Titanium-Maltol Complex.

Inorganica chimica acta

Lamboy JL, Pasquale A, Rheingold AL, Meléndez E.
PMID: 18425211
Inorganica Chim Acta. 2007 Apr 20;360(6):2115-2120. doi: 10.1016/j.ica.2006.10.042.

The reaction of Cp(2)TiCl(2) with two equivalents of maltol (3-hydroxy-2-methyl-4-pyrone) in water, at room temperature and pH of 5.4, leads to a complete replacement of Cp and chloride ligands affording, Ti(maltolato)(2)(OH)(2.) The complex has been characterized by IR, NMR...

Accurate control of a liquid-crystal display to produce a homogenized Fourier transform for holographic memories.

Optics letters

Márquez A, Gallego S, Méndez D, Alvarez ML, Fernández E, Ortuño M, Neipp C, Beléndez A, Pascual I.
PMID: 17767288
Opt Lett. 2007 Sep 01;32(17):2511-3. doi: 10.1364/ol.32.002511.

We show an accurate procedure to obtain a Fourier transform (FT) with no dc term using a commercial twisted-nematic liquid-crystal display. We focus on the application to holographic storage of binary data pages, where a drastic decrease of the...

Effects of overmodulation in fixation-free rehalogenating bleached holograms.

Applied optics

Neipp C, Pascual I, Beléndez A.
PMID: 18360366
Appl Opt. 2001 Jul 10;40(20):3402-8. doi: 10.1364/ao.40.003402.

The mechanism for hologram formation by fixation-free rehalogenating bleaching has been treated by several authors. Experiments carried out with Kodak and Agfa photographic plates have led to the conclusion that the transfer of material from the exposed to the...

Temporal evolution of the angular response of a holographic diffraction grating in PVA/acrylamide photopolymer.

Optics express

Gallego S, Ortuno M, Neipp C, Garcia C, Belendez A, Pascual I.
PMID: 19461722
Opt Express. 2003 Jan 27;11(2):181-90. doi: 10.1364/oe.11.000181.

In this paper we evaluate the temporal evolution, after exposure, of a diffraction grating stored in a PVA/acrylamide photopolymer. We also study the overmodulation of the refractive index inside the hologram, which gives rise to a particular behaviour of...

3-dimensional characterization of thick grating formation in PVA/AA based photopolymer.

Optics express

Gallego S, Ortuño M, Neipp C, Márquez A, Beléndez A, Fernández E, Pascual I.
PMID: 19516676
Opt Express. 2006 Jun 12;14(12):5121-8. doi: 10.1364/oe.14.005121.

Large thickness is required in holographic recording materials to be used as holographic memories. Photopolymers have proved to be a good alternative to construct holographic memories. Nevertheless, modeling the behavior of thick layers poses some problems due to high...

Diffuse-object holograms in silver halide emulsions: influence of the beam ratio on the efficiency and the signal-to-noise ratio.

Applied optics

Fimia A, Fuentes R, Beléndez A.
PMID: 21069068
Appl Opt. 1996 Feb 10;35(5):782-6. doi: 10.1364/AO.35.000782.

The influence of the beam ratio between reference and object beam intensities on the characteristics of diffuse-object holograms recorded as volume phase holograms in bleached silver halide emulsion is experimentally analyzed. Measurements of the diffraction efficiency and the signal-to-noise...

Showing 1 to 12 of 248 entries