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Ortiz PD, Castillo-Rodriguez J, Tapia J, Zarate X, Vallejos GA, Roa V, Molins E, Bustos C, Schott E. A novel series of pyrazole derivatives toward biological applications: experimental and conceptual DFT characterization. Mol Divers 2021; 26:2443-2457. [PMID: 34724138 DOI: 10.1007/s11030-021-10342-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/11/2021] [Indexed: 11/26/2022]
Abstract
A new series of 13 pyrazole-derivative compounds with potential antifungal activity were synthetized with good yields. The series have the (E)-2-((1-(R)-3,5-dimethyl-1H-pyrazol-4-yl)diazenyl)phenol general structure and were characterized by means of X-ray diffraction, UV-Vis, FTIR, 1H-NMR, 13C-NMR, and two-dimensional NMR experiments. This experimental characterization was complemented by DFT simulations. A deep insight regarding molecular reactivity was accomplished employing a conceptual DFT approach. In this sense, dual descriptors were calculated at HF and DFT level of theory and GGV spin-density Fukui functions. The main reactive region within the molecules was mapped through isosurface and condensed representations. Finally, chemical descriptors that have previously shown to be close related to biological activity were compared within the series. Thus, higher values of chemical potential ω and electrophilicity χ obtained for compounds 10, 9, 8, 6 and 7, in this order, suggest that these molecules are the better candidates as biological agents.
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Affiliation(s)
- Pedro D Ortiz
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Llano Subercaseaux, 2801, Santiago, Chile
| | - Judith Castillo-Rodriguez
- Departamento de Química Inorgánica, Facultad de Química y Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile
| | - Jorge Tapia
- Departamento de Ciencias Quı́micas y Biológicas, Universidad Bernardo O'Higgins, Facultad de Salud, General Gana, 1702, Santiago, Chile
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, Llano Subercaseaux, 2801, Santiago, Chile.
| | - Gabriel A Vallejos
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Las Encinas 220, Campus Isla Teja, Valdivia, Chile
| | - Vanesa Roa
- Departamento de Química Inorgánica, Facultad de Química y Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193, Bellaterra, Spain
| | - Carlos Bustos
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Las Encinas 220, Campus Isla Teja, Valdivia, Chile
| | - Eduardo Schott
- Departamento de Química Inorgánica, Facultad de Química y Farmacia, Centro de Energía UC, Centro de Investigación en Nanotecnología y Materiales Avanzados CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna, 4860, Santiago, Chile.
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2
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Gutiérrez M, Vallejos GA, Cortés MP, Bustos C. Bennett acceptance ratio method to calculate the binding free energy of BACE1 inhibitors: Theoretical model and design of new ligands of the enzyme. Chem Biol Drug Des 2019; 93:1117-1128. [PMID: 30693676 DOI: 10.1111/cbdd.13456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/02/2018] [Accepted: 11/24/2018] [Indexed: 11/29/2022]
Abstract
In recent years, the design, development, and evaluation of several inhibitors of the BACE1 enzyme, as part of Alzheimer's treatment, have gathered the scientific community's interest. Here, a linear regression model was built using binding free energy calculations through the Bennett acceptance ratio method for 20 known inhibitors of the BACE1 enzyme, with a Pearson coefficient of R = 0.88 and R2 = 0.78. The validation of this model was verified employing eight additional random inhibitors, which also gave a linear correlation with R = 0.97 and R2 = 0.93. Furthermore, this linear regression model was also used for proposing the structure of four potential BACE1 inhibitors, and the most active of them gave a theoretical Kd = 10 nM. However, these molecules have not been synthesized yet. Our team used a total time of more than 800 ns for the Molecular Dynamics to carry out this study, and all the software used were freely available.
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Affiliation(s)
- Margarita Gutiérrez
- Laboratorio de Síntesis Orgánica y Actividades Biológicas (LSO-Act-Bio), Instituto de Química de los Recursos Naturales, Universidad de Talca, Talca, Chile
| | - Gabriel A Vallejos
- Facultad de Ciencias, Instituto de Ciencias Químicas, Universidad Austral de Chile, Valdivia, Chile
| | - Magdalena P Cortés
- Escuela de Química y Farmacia, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso, Chile
| | - Carlos Bustos
- Facultad de Ciencias, Instituto de Ciencias Químicas, Universidad Austral de Chile, Valdivia, Chile
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3
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Gómez MA, Bonilla JM, Coronel MA, Martínez J, Morán-Trujillo L, Orellana SL, Vidal A, Giacaman A, Morales C, Torres-Gallegos C, Concha M, Oyarzun-Ampuero F, Godoy P, Lisoni JG, Henríquez-Báez C, Bustos C, Moreno-Villoslada I. Antibacterial activity against Staphylococcus aureus of chitosan/chondroitin sulfate nanocomplex aerogels alone and enriched with erythromycin and elephant garlic (Allium ampeloprasum L. var. ampeloprasum) extract. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2016-1112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Abstract
The antibacterial activity against Staphylococcus aureus of aerogels fabricated from colloidal suspensions of chitosan/chondroitin sulfate nanocomplexes is analyzed. Upon freeze-drying the colloidal suspensions, the aerogels presented a porous structure made of microsheets and microfibers. The aerogels could, in addition, be loaded with antimicrobial agents. Loaded with the antibiotic erythromycin, the aerogels showed crystalline deposits, affecting the topography of the samples as well as their mechanical properties, showing a decrease on the apparent Young’s modulus and hardness at 40% deformation. Loaded with elephant garlic (Allium ampeloprasum L. var. ampeloprasum) extract, the aerogels showed texturization of the microsheets and microfibers, and the higher relative mass allowed an increase on the apparent Young’s modulus and hardness at 40% deformation with respect to pristine aerogels. Unloaded aerogels showed activity against Staphylococcus aureus, including a methicillin-resistant strain. The release of erythromycin from the aerogels to an agar environment is governed by equilibrium forces with the polysaccharides, which allow modulating the load of antibiotic and its concomitant diffusion from the material. The diffusion of the active components of the elephant garlic extract did not show a dependence on the polysaccharide content, revealing a week interaction. The elephant garlic extract resulted active against the methicillin-resistant Staphylococcus aureus strain, while resistance was found for the antibiotic, revealing the therapeutic potential of the natural extract. The antimicrobial aerogels may be used for several therapeutic purposes, such as healing of infected chronic wounds.
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Affiliation(s)
- María Angélica Gómez
- Facultad de Ciencias de la Salud , Universidad Colegio Mayor de Cundinamarca , Bogotá , Colombia
| | - Jennifer Marcela Bonilla
- Facultad de Ciencias de la Salud , Universidad Colegio Mayor de Cundinamarca , Bogotá , Colombia
| | - María Alejandra Coronel
- Facultad de Ciencias de la Salud , Universidad Colegio Mayor de Cundinamarca , Bogotá , Colombia
| | - Jonathan Martínez
- Facultad de Ciencias de la Salud , Universidad Colegio Mayor de Cundinamarca , Bogotá , Colombia
| | - Luis Morán-Trujillo
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Sandra L. Orellana
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Alejandra Vidal
- Instituto de Anatomía, Histología y Patología, Facultad de Medicina , Universidad Austral de Chile , Valdivia , Chile
| | - Annesi Giacaman
- Instituto de Anatomía, Histología y Patología, Facultad de Medicina , Universidad Austral de Chile , Valdivia , Chile
| | - Carlos Morales
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - César Torres-Gallegos
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Miguel Concha
- Instituto de Anatomía, Histología y Patología, Facultad de Medicina , Universidad Austral de Chile , Valdivia , Chile
| | - Felipe Oyarzun-Ampuero
- Department of Sciences and Pharmaceutical Technologies , Universidad de Chile , Santiago , Chile
| | - Patricio Godoy
- Instituto de Microbiología Clínica, Facultad de Medicina , Universidad Austral de Chile , Valdivia , Chile
| | - Judit G. Lisoni
- Instituto de Ciencias Físicas y Matemáticas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Carla Henríquez-Báez
- Instituto de Ciencias Físicas y Matemáticas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Carlos Bustos
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Valdivia , Chile
| | - Ignacio Moreno-Villoslada
- Instituto de Ciencias Químicas, Facultad de Ciencias , Universidad Austral de Chile , Isla Teja, Casilla 567 , Valdivia , Chile , Tel.: +56 63 2293520
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Abstract
The objective of this study is to evaluate the treatment of high-strength acid mine drainage (AMD) from copper mining by nanofiltration (NF) and reverse osmosis (RO) at pilot scale. The performances of two commercial spiral-wound membranes - NF99 and RO98pHt, both from Alfa Laval - were compared. The effects of pressure and feed flow on ion rejection and permeate flux were evaluated. The results showed high ion removal under optimum pressure conditions, which reached 92% for the NF99 membrane and 98% for the RO98pHt membrane. Sulfate removal reached 97% and 99% for NF99 and RO98pHt, respectively. In the case of copper, aluminum, iron and manganese, the removal percentage surpassed 95% in both membranes. Although concentration polarization limited NF performance at higher pressures, permeate fluxes observed in NF were five times greater than those obtained by RO, with only slightly lower divalent ion rejection rates, making it a promising option for the treatment of AMD.
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Affiliation(s)
- K Ambiado
- Department of Chemical Engineering, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile
| | - C Bustos
- Department of Civil Engineering, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile E-mail:
| | - A Schwarz
- Department of Civil Engineering, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile E-mail:
| | - R Bórquez
- Department of Chemical Engineering, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile
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5
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Bustos C, Molins E, Cárcamo JG, Aguilar MN, Sánchez C, Moreno-Villoslada I, Nishide H, Zarate X, Schott E. A family of substituted hydrazonoisoxazolones with potential biological properties. NEW J CHEM 2016. [DOI: 10.1039/c5nj02604k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of a family of isoxazolones were performed. X-Ray diffraction over three structures was performed. All the compounds showed antineoplastic activity.
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Affiliation(s)
- Carlos Bustos
- Instituto de Ciencias Químicas
- Universidad Austral de Chile
- Valdivia
- Chile
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- 08193 Bellaterra
- Spain
| | | | - Marcelo N. Aguilar
- Instituto de Bioquímica y Microbiología
- Universidad Austral de Chile
- Valdivia
- Chile
| | - Christian Sánchez
- Instituto de Ciencias Químicas
- Universidad Austral de Chile
- Valdivia
- Chile
| | | | - Hiroyuki Nishide
- Department of Applied Chemistry
- School of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Ximena Zarate
- Theoretical and Computational Chemistry Center
- Instituto de Ciencias Químicas Aplicadas
- Facultad de Ingeniería
- Universidad Autónoma de Chile
- Santiago
| | - Eduardo Schott
- Departamento de Química Inorgánica
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago
- Chile
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6
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Baldoví JJ, Duan Y, Bustos C, Cardona-Serra S, Gouzerh P, Villanneau R, Gontard G, Clemente-Juan JM, Gaita-Ariño A, Giménez-Saiz C, Proust A, Coronado E. Single ion magnets based on lanthanoid polyoxomolybdate complexes. Dalton Trans 2016; 45:16653-16660. [DOI: 10.1039/c6dt02258h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic solubility of these POMs enhances the chemical processability into molecular spintronic devices.
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Affiliation(s)
- José J. Baldoví
- Instituto de Ciencia Molecular (ICMol)
- Universidad de Valencia
- E-46980 Paterna
- Spain
| | - Yan Duan
- Instituto de Ciencia Molecular (ICMol)
- Universidad de Valencia
- E-46980 Paterna
- Spain
| | - Carlos Bustos
- Facultad de Ciencia
- Instituto de Química
- Campus Isla Teja
- Universidad Austral de Chile
- Valdivia
| | | | - Pierre Gouzerh
- Sorbonne Universites
- UPMC-Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Richard Villanneau
- Sorbonne Universites
- UPMC-Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Geoffrey Gontard
- Sorbonne Universites
- UPMC-Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | | | | | - Carlos Giménez-Saiz
- Instituto de Ciencia Molecular (ICMol)
- Universidad de Valencia
- E-46980 Paterna
- Spain
| | - Anna Proust
- Sorbonne Universites
- UPMC-Paris 06
- UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris
| | - Eugenio Coronado
- Instituto de Ciencia Molecular (ICMol)
- Universidad de Valencia
- E-46980 Paterna
- Spain
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7
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Bustos C, Alvarez-Thon L, Baggio R. Structural aspects of two α-dihydrazones displaying a complete survey of intermolecular interactions. Acta Crystallogr C 2015; 71:1106-13. [DOI: 10.1107/s2053229615021944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/17/2015] [Indexed: 11/10/2022] Open
Abstract
The compounds (2′E,2′E)-2,2′-(propane-1,2-diylidene)bis[1-(2-nitrophenyl)hydrazine], C15H14N6O4, (I), and (2Z,3Z)-ethyl 3-[2-(2-nitrophenyl)hydrazinylidene]-2-[2-(4-nitrophenyl)hydrazinylidene]butanoate tetrahydrofuran hemisolvate, C18H18N6O6·0.5C4H8O, (II), are puzzling outliers deviating from a general synthetic route aimed at the preparation of substituted pyrazoles. Possible reasons for this outcome, which is exceptional in an otherwise firmly established synthetic procedure, are analyzed. Compound (I) is unsolvated, while compound (II) crystallizes with a tetrahydrofuran solvent molecule lying on an inversion centre. The ethoxycarbonyl chain of (II), in turn, appears disordered into two equally populated (50%) moieties. In both structures, a plethora of different commonly occurring weak intermolecular interactions [viz. π(phenyl)...π(phenyl), π(C=N)...π(C=N), π(phenyl)...π(C=N), N—H...O and C—H...O] appear responsible for the crystal stability. Much less common are the short O(nitro)...O(nitro) contacts which are observed in the structure of (I), an example of unusual `electron donor–acceptor' (EDA) interactions.
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8
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Bustos C, Alvarez-Thon L, Oportus T, Mesías-Salazar A, Baggio R. On substituted pyrazole derivatives. II. ( E)-1-(4-{[1-(4-Fluorophenyl)-3,5-dimethyl-1 H-pyrazol-4-yl]diazenyl}phenyl)ethanone and ( E)-1-(4-chlorophenyl)-3,5-dimethyl-4-[2-(2-nitrophenyl)diazenyl]-1 H-pyrazole. Acta Crystallogr C 2015; 71:53-8. [DOI: 10.1107/s2053229614024619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 11/10/2014] [Indexed: 11/10/2022] Open
Abstract
The molecular structures of (E)-1-(4-{[1-(4-fluorophenyl)-3,5-dimethyl-1H-pyrazol-4-yl]diazenyl}phenyl)ethanone, C19H17FN4O, (III), and (E)-1-(4-chlorophenyl)-3,5-dimethyl-4-[2-(2-nitrophenyl)diazenyl]-1H-pyrazole, C17H14ClN5O2, (IV), prepared by reaction of the corresponding β-diketohydrazones with substituted arylhydrazines in acid media, are nonplanar, with the planes of the lateral phenyl rings forming dihedral angles with that of the central pyrazole ring varying from 2.71 (7) to 45.22 (7)°. The crystal structures are supported by C—H...O, C—H...π and π–π weak intermolecular interactions together with some unusual trifurcated C—Cl...Cl—C contacts, which are discussed in detail.
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9
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Bustos C, Molins E, Cárcamo JG, Aguilar MN, Sánchez C, Moreno-Villoslada I, Nishide H, Mesías-Salazar A, Zarate X, Schott E. New 3,4,5-trisubstituted isoxazole derivatives with potential biological properties. NEW J CHEM 2015. [DOI: 10.1039/c4nj02427c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eighteen new isoxazole derivatives were synthesized and fully characterized. Their biological activity against Bcl-2, Bax and p21WAF-1 was tested.
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Affiliation(s)
- Carlos Bustos
- Instituto de Ciencias Químicas
- Universidad Austral de Chile
- Valdivia
- Chile
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Campus de la Universitat Autònoma de Barcelona
- 08193 Bellaterra
- Spain
| | | | - Marcelo N. Aguilar
- Instituto de Bioquímica y Microbiología
- Universidad Austral de Chile
- Valdivia
- Chile
| | - Christian Sánchez
- Instituto de Ciencias Químicas
- Universidad Austral de Chile
- Valdivia
- Chile
| | | | - Hiroyuki Nishide
- Department of Applied Chemistry
- School of Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | | | - Ximena Zarate
- Dirección de Postgrado e Investigación
- Universidad Autónoma de Chile
- Santiago
- Chile
| | - Eduardo Schott
- Laboratorio de Bionanotecnologia
- Universidad Bernardo O'Higgins
- Santiago
- Chile
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10
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Faundez-Gutierrez R, Macleod-Carey D, Zarate X, Bustos C, Molins E, Schott E. Synthesis, characterization and DFT study of a new family of pyrazole derivatives. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Alvarez-Thon L, Bustos C, Molins E, Garland MT, Baggio R. On substituted pyrazole derivatives. I. 3-Methyl-4-[(Z)-2-(4-methylphenyl)hydrazin-1-ylidene]-1-(3-nitrophenyl)-1H-pyrazol-5(4H)-one and 3-methyl-4-[(Z)-2-(4-methylphenyl)hydrazin-1-ylidene]-1-[4-(trifluoromethyl)phenyl]-1H-pyrazol-5(4H)-one. Acta Crystallogr C Struct Chem 2014; 70:837-42. [PMID: 25186353 DOI: 10.1107/s2053229614017173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 07/24/2014] [Indexed: 11/11/2022]
Abstract
The title substituted pyrazole derivatives, C17H15N5O3 and C18H15F3N4O, share most of their molecular features, in particular the hydrazinylidene (-HN-N=) rather than the diazene (-N=N-) tautomeric form, and differ only in the substituents (NO2 and CF3) on one of the outer phenyl rings. The molecular units are basically planar, with the rotation of the phenyl rings being hindered by the presence of two intramolecular hydrogen bonds having the keto O atom as acceptor. In both structures, the packing is governed by weak C-H...O, C-H...π and π-π interactions. The subtle way in which minor structural differences lead to rather different supramolecular structures is analysed.
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Affiliation(s)
- Luis Alvarez-Thon
- Departamento de Ciencias Físicas, Universidad Andrés Bello, República 220, Santiago de Chile, Chile
| | - Carlos Bustos
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Avenida Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Elies Molins
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Maria Teresa Garland
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago de Chile, Chile
| | - Ricardo Baggio
- Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
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12
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Labrador N, Martínez JM, García M, Bustos C, Manzano FJ, Moya P. CP-088 Survival time of biological treatments in psoriasis. Eur J Hosp Pharm 2014. [DOI: 10.1136/ejhpharm-2013-000436.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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13
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Alvarez-Thon L, Bustos C, Espinoza-Santibañez K, Garland MT, Baggio R. Dimers linked by type-I C-F···F-C contacts in (Z)-3-methyl-4-[2-(4-methylphenyl)hydrazinylidene]-1-(pentafluorophenyl)-1H-pyrazol-5(4H)-one. Acta Crystallogr C 2013; 69:1200-4. [PMID: 24096516 DOI: 10.1107/s0108270113024943] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 09/06/2013] [Indexed: 11/10/2022] Open
Abstract
The title compound, C17H11F5N4O, is described and compared with two closely related analogues in the literature. There are two independent molecules in the asymmetric unit, linked by N-H···O hydrogen bonds and π-π interactions into dimeric entities, presenting a noticeable noncrystallographic C2 symmetry. These dimers are in turn linked by a medium-strength type-I C-F···F-C interaction into elongated tetramers. Much weaker C-H···F contacts link the tetramers into broad two-dimensional substructures parallel to (101).
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Affiliation(s)
- Luis Alvarez-Thon
- Departamento de Ciencias Físicas, Universidad Andrés Bello, República 220, Santiago de Chile, Chile
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14
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Meurice L, Vygen S, Gault G, Bustos C, Caserio-Schönemann C, Rolland P. Surveillance épidémiologique de l’absence scolaire à partir d’un réseau d’écoles sentinelles : SentEcole, Gironde. Rev Epidemiol Sante Publique 2013. [DOI: 10.1016/j.respe.2013.07.679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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15
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Alvarez Thon L, Bustos C, Diaz-Marín F, Garland MT, Baggio R. 3,5-Dimethyl-4-[(E)-(2-nitrophenyl)diazenyl]-1-(2,3,4,5,6-pentafluorophenyl)-1H-pyrazole. Acta Crystallogr C 2013; 69:101-4. [PMID: 23282925 DOI: 10.1107/s0108270112048573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 11/26/2012] [Indexed: 11/10/2022] Open
Abstract
The title compound, C(17)H(10)F(5)N(5)O(2), is described and compared with its 4-nitrophenyl isomer [Bustos, Sánchez, Schott, Alvarez-Thon & Fuentealba (2007). Acta Cryst. E63, o1138-o1139]. The title molecule presents its nitro group split into two rotationally disordered components, which in conjunction with the rotation of the `unclamped' rings constitute the main molecular differences. Packing is directed by a head-to-tail type `I' C-F...F-C interaction, generating double-chain strips running along [100]. These substructures are interlinked by a variety of weak F...F, O...F, F...π and O...π interactions.
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Affiliation(s)
- Luis Alvarez Thon
- Departamento de Ciencias Físicas, Universidad Andrés Bello, República 220, Santiago de Chile, Chile.
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De-Miguel FF, Santamaría-Holek I, Noguez P, Bustos C, Hernández-Lemus E, Rubí JM. Biophysics of active vesicle transport, an intermediate step that couples excitation and exocytosis of serotonin in the neuronal soma. PLoS One 2012; 7:e45454. [PMID: 23056204 PMCID: PMC3463611 DOI: 10.1371/journal.pone.0045454] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 08/21/2012] [Indexed: 12/16/2022] Open
Abstract
Transmitter exocytosis from the neuronal soma is evoked by brief trains of high frequency electrical activity and continues for several minutes. Here we studied how active vesicle transport towards the plasma membrane contributes to this slow phenomenon in serotonergic leech Retzius neurons, by combining electron microscopy, the kinetics of exocytosis obtained from FM1-43 dye fluorescence as vesicles fuse with the plasma membrane, and a diffusion equation incorporating the forces of local confinement and molecular motors. Electron micrographs of neurons at rest or after stimulation with 1 Hz trains showed cytoplasmic clusters of dense core vesicles at 1.5±0.2 and 3.7±0.3 µm distances from the plasma membrane, to which they were bound through microtubule bundles. By contrast, after 20 Hz stimulation vesicle clusters were apposed to the plasma membrane, suggesting that transport was induced by electrical stimulation. Consistently, 20 Hz stimulation of cultured neurons induced spotted FM1-43 fluorescence increases with one or two slow sigmoidal kinetics, suggesting exocytosis from an equal number of vesicle clusters. These fluorescence increases were prevented by colchicine, which suggested microtubule-dependent vesicle transport. Model fitting to the fluorescence kinetics predicted that 52–951 vesicles/cluster were transported along 0.60–6.18 µm distances at average 11–95 nms−1 velocities. The ATP cost per vesicle fused (0.4–72.0), calculated from the ratio of the ΔGprocess/ΔGATP, depended on the ratio of the traveling velocity and the number of vesicles in the cluster. Interestingly, the distance-dependence of the ATP cost per vesicle was bistable, with low energy values at 1.4 and 3.3 µm, similar to the average resting distances of the vesicle clusters, and a high energy barrier at 1.6–2.0 µm. Our study confirms that active vesicle transport is an intermediate step for somatic serotonin exocytosis by Retzius neurons and provides a quantitative method for analyzing similar phenomena in other cell types.
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Affiliation(s)
- Francisco F De-Miguel
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City, México.
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Bustos C, Escobar-Fuentealba A, Alvarez-Thon L, Faundez-Gutierrez R, Garland MT. (Z)-1-(2-Chloro-phen-yl)-3-methyl-4-[2-(4-nitro-phen-yl)hydrazin-1-yl-idene]-1H-pyrazol-5(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2351-2. [PMID: 22904819 PMCID: PMC3414286 DOI: 10.1107/s1600536812029790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 06/29/2012] [Indexed: 11/10/2022]
Abstract
There are two independent molecules, A and B, in the asymmetric unit of the title compound, C16H12ClN5O3. The relative orientations of the chlorophenyl ring with respect to the pyrazole ring in the two crystallographically independent molecules are different, and their corresponding dihedral angles are −53.3 (2) and 114.09 (18)° in molecules A and B, respectively. There are two strong intramolecular N—H⋯O hydrogen bonds, and two weak intramolecular C—H⋯O and C—H⋯Cl hydrogen bonds. The crystal packing is constructed by weak C—H⋯O and N—H⋯O interactions, and two π–π stacking interactions [centroid–centroid distances = 3.7894 (9) and 3.5719 (10) Å], forming a molecular ladder along the a axis.
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Yuste JR, Alfonso M, Bustos C, Quintana J, Rubio M, Villas C, Del Pozo JL. Iliac bone Candida albicans osteomyelitis in a patient with iliac crest bone autograft: a case report and review of the literature. Infection 2012; 40:445-9. [DOI: 10.1007/s15010-012-0276-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Accepted: 05/25/2012] [Indexed: 10/28/2022]
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Del Pozo JL, Rodil R, Aguinaga A, Yuste JR, Bustos C, Montero A, Espinosa G, García-Fernández N. Daptomycin lock therapy for grampositive long-term catheter-related bloodstream infections. Int J Clin Pract 2012; 66:305-8. [PMID: 22340450 DOI: 10.1111/j.1742-1241.2011.02830.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION To evaluate the efficacy of Daptomycin (DPT) lock therapy in the treatment of Grampositive long-term catheter-related bloodstream infections (LT-CRBI). PATIENTS AND METHODS A retrospective review of all patients receiving DPT lock therapy for the treatment of LT-CRBI from December 2009 to May 2010 was conducted. The primary endpoint used in this study was failure to cure the episode of LT-CRBI. Cure was defined as fever disappearance, negative blood cultures within 1 month after the end of treatment, and catheter salvage. RESULTS Thirteen subjects (seven men, mean age 62 years) were evaluated. There were six Staphylococcus epidermidis, two Staphylococcus hominis, one Staphylococcus haemolyticus, two Enterococcus faecalis and two polymicrobial (S. epidermidis and S. hominis) bloodstream infections. DPT lock therapy was administered for a mean of 14 days (interquartilic range 10-14). Intravenous DPT was administered in nine patients for a mean of 10 days (interquartilic range 5-11). Clinical cure and blood culture sterilisation occurred in 11 of 13 patients (85%). Two patients had fever during treatment and catheters were removed. Median length of follow-up in patients with therapeutic success was 67 days (interquartilic range 14-88). CONCLUSION DPT lock therapy demonstrated good in vivo efficacy in LT-CRBI caused by coagulase negative staphylococci and Enterococcus species.
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Affiliation(s)
- J L Del Pozo
- Division of Infectious Diseases, Clinica Universidad de Navarra, Pamplona, Spain.
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Bustos C, Pérez-Cerda M, Alvarez-Thon L, Barrales-Salcedo E, Garland MT. (E)-3,5-Dimethyl-1-p-tolyl-4-(p-tolyl-diazen-yl)-1H-pyrazole. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o353-4. [PMID: 22346981 PMCID: PMC3275036 DOI: 10.1107/s1600536812000360] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 01/04/2012] [Indexed: 11/10/2022]
Abstract
There are two independent molecules, A and B, in the asymmetric unit of the title compound, C19H20N4, in each of which the N=N double bond has an E conformation. The dihedral angles between the pyrazole ring and the p-tolyl rings in the 1- and 4-positions are 22.54 (8) and 35.73 (7)°, respectively, in molecule A. The corresponding dihedral angles in molecule B are 28.13 (8) and 22.18 (8)°. In the crystal, the A and B molecules are linked by weak C—H⋯π interactions, leading to inversion dimers in each case.
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Bustos C, Barría D, Alvarez-Thon L, Cárcamo JG, Garland MT. 2-[2-(4-Acetyl-phen-yl)hydrazinyl-idene]-1,3-diphenyl-propane-1,3-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2048-o2049. [PMID: 22091075 PMCID: PMC3213496 DOI: 10.1107/s1600536811027590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 07/09/2011] [Indexed: 05/31/2023]
Abstract
In the title compound, C(23)H(18)N(2)O(3), the inter-planar angle between the benzoyl units is 80.51 (6)° while the dihedral angles between the hydrazinyl-idene and benzoyl groups are 43.43 (6) and 54.16 (6)°. In the crystal, a strong resonance-assisted intra-molecular N-H⋯O hydrogen bond is observed. The mol-ecules form an inversion dimer via a pair of weak C-H⋯O hydrogen bonds and a π-π inter-action [centroid-centroid distance of 3.5719 (10) Å]. These dimers are linked via weak C-H⋯O contacts, forming chains along the b axis.
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Affiliation(s)
- Carlos Bustos
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Daniela Barría
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Luis Alvarez-Thon
- Departamento de Ciencias Físicas, Universidad Andres Bello, Avda. República 220, Santiago de Chile, Chile
| | - Juan-Guillermo Cárcamo
- Instituto de Ciencias Moleculares y Microbiología, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Maria Teresa Garland
- Laboratorio de Cristalografía, Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Av. Blanco Encalada 2008, Santiago de Chile, Chile
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Bustos C, Alvarez-Thon L, Barría D, Cárcamo JG, Garland MT. A second monoclinic polymorph of 2-[2-(4-methoxyphenyl)hydrazinylidene]-1,3-diphenylpropane-1,3-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1830-1. [PMID: 21837198 PMCID: PMC3151915 DOI: 10.1107/s1600536811024445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 06/21/2011] [Indexed: 11/10/2022]
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Bustos C, Alvarez-Thon L, Barría D, Garland MT, Sánchez C. 2-[2-(4-Nitrophenyl)hydrazinylidene]-1,3-diphenylpropane-1,3-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1587. [PMID: 21836996 PMCID: PMC3151834 DOI: 10.1107/s1600536811021143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 06/01/2011] [Indexed: 11/27/2022]
Abstract
In the molecular structure of the title compound, C21H15N3O4, the interplanar angle between the benzoyl units is 89.7 (1)°. The corresponding angles between the phenylhydrazono and the benzoyl groups are 31.4 (3) and 60.8 (2)°, respectively. In the crystal, a strong resonance-assisted intramolecular hydrogen bond (N—H⋯O) and a weak intramolecular hydrogen bond (C—H⋯N) strongly affect the observed conformation of the molecule. The crystal packing is determined by a strong intermolecular hydrogen bond (N—H⋯O), giving rise to a helical chain along the a axis. In addition, two weak intermolecular contacts (C—H⋯O) are observed.
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Bustos C, Alvarez-Thon L, Ibañez A, Sánchez C. (Acetylacetonato)dibromido[2,2-diphenylhydrazin-1-ido(1−)][2,2-diphenylhydrazin-1-ido(2−)]molybdenum(VI). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m675-6. [PMID: 21754584 PMCID: PMC3120344 DOI: 10.1107/s1600536811015881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 04/26/2011] [Indexed: 11/16/2022]
Abstract
In the title compound, [MoBr2(C12H11N2)(C12H10N2)(C5H7O2)], the MoVI atom is six-coordinated in a distorted octahedral geometry by two N atoms from the diphenylhydrazide(1−) and diphenylhydrazide(2−) ligands, two O atoms from a bidentate acetylacetonate ligand and two Br− ions. The molecules form an inversion dimer via a pair of weak C—H⋯O hydrogen bonds and a π–π stacking interaction with a centroid–centroid distance of 3.7401 (12) Å. Weak intramolecular C—H⋯Br interactions and an intramolecular π–π stacking interaction with a centroid–centroid distance of 3.8118 (15) Å are also observed.
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Bustos C, Alvarez-Thon L, Cárcamo JG, Ibañez A, Sánchez C. 2-[2-(3-Chloro-phen-yl)hydrazinyl-idene]-1,3-diphenyl-propane-1,3-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1450-o1451. [PMID: 21754825 PMCID: PMC3120543 DOI: 10.1107/s1600536811017909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 05/11/2011] [Indexed: 05/31/2023]
Abstract
The mol-ecular structure of the title compound, C(21)H(15)ClN(2)O(2), features one strong intra-molecular N-H⋯O resonance-assisted hydrogen bond (RAHB). In the crystal, mol-ecules form inversion-related dimers via pairs of weak inter-molecular N-H⋯O contacts. These dimers are further stabilized via three weak C-H⋯O contacts, developing the three-dimensional structure.
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Affiliation(s)
- Carlos Bustos
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Luis Alvarez-Thon
- Departamento de Ciencias Físicas, Universidad Andres Bello, Avda. República 220, Santiago de Chile, Chile
| | - Juan-Guillermo Cárcamo
- Instituto de Ciencias Moleculares y Microbiología, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Andrés Ibañez
- Laboratorio de Cristalografía, Difracción de Rayos-X, Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Av. Blanco Encalada 2008, Santiago, Chile
| | - Christian Sánchez
- Instituto de Ciencias Químicas, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
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Bustos C, Alvarez-Thon L, Cárcamo JG, Garland MT, Sánchez C. 2-[2-(4-Bromo-phen-yl)hydrazinyl-idene]-1,3-diphenyl-propane-1,3-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1426. [PMID: 21754806 PMCID: PMC3120580 DOI: 10.1107/s1600536811017557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 05/10/2011] [Indexed: 11/20/2022]
Abstract
The conformation of the title molecule, C21H15BrN2O2, is stabilized by a weak intramolecular C—H⋯N hydrogen bond and a strong resonance-assisted N—H⋯O intramolecular hydrogen bond. In the crystal, the molecules are linked by weak intermolecular C—H⋯O interactions, forming zigzag chains along the b axis.
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Bustos C, Carey DML, Boubekeur K, Thouvenot R, Proust A, Gouzerh P. Aryldiazenido derivatives: A new entry to the functionalization of Keggin polyoxometalates. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.06.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zárate X, Schott E, Mac-Leod Carey D, Bustos C, Arratia-Pérez R. DFT study on the electronic structure, energetics and spectral properties of several bis(organohydrazido(2-)) molybdenum complexes containing substituted phosphines and chloro atoms as ancillary ligands. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.07.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sánchez CO, Díaz FR, Gatica N, Bustos C, Espiñeira K, Huaquimilla D. Synthesis and study of the effect of carboxyvinyl group position on the properties of polyamides. Crosslinked polymers. Polym Bull (Berl) 2010. [DOI: 10.1007/s00289-010-0356-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bohn U, Pavcovich M, Jimenez P, Hernandez M, Lloret M, Cazorla M, Reyes I, Baratta T, Bustos C. Effect of primary polychemotherapy after sentinel lymph node biopsy on the necessity for lymphadenectomy in stage II breast cancer patients. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e11589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e11589 Background: Sentinel lymph node (SLN) biopsy is the standard procedure for assessing axillary status in stage I-II breast cancer patients. Realizing this procedure before the administration of primary polichemotherapy would reduce the number of unnecesary lymphadenectomy in patients with negative sentinel lymph node. Methods: From January 2006 to May 2008, twenty-one patients with breast cancer on stage II-IIIA were included in the study. The median age was of 49 years (range 22–74y). The median palpable tumour size was of 3.5cm (range 1.8–6.0) and by ultrasonography 2.0cm (range 1.8–5.0cm.). Stage II:19 and Stage III:2 (cT:6.0cm.). Breast biopsy was performed in all cases with: IDC:20. G1:9 (42,8%), G:2:11(52%) and G3:1(4,76%). ER+:18 (85,7%), PR+:13 (61,9%), HER2 (+):6 (28,5) and triple negative:3 (14,2%).The scheme of treatment was: 4Epi: 90mg/M2 and Cyclophosphamide 600mg/M2 day 1/3w/4cycles, followed by paclitaxel (P) 100mg/M2 day 1/wekly/8. Trastuzumab was given during one year 4/2mg/Kg and started with (P). Tumorectomy and limphadenectomy was planned, followed by radiotherapy ± Hormonotherapy ± trastuzumab. Results: The 21 patients were evaluable for the analysis. The median sentinel lymph nodes resected was of 2 (range 2–6). The SLN biopsy was positive in 12 (57,1%) cases and negative in 9 (42,8%). Followed the primary chemotherapy, tumorectomy and axillary lymphadenectomy (AL) were performed in all 21 cases. The 12 positive SLN showed in the AL 9/12 (75%) pN0 and the 9 negative SLN showed in the AL 0/9 (0%) pN1. There were 4/20 (20%) completely pathological tumour response and 4/20 (20%) cases with only isolated malignant cells. The treatment was well tolerated with not a case of grade 3–4 toxicity. Conclusions: The primary chemotherapy given after the biopsy of sentinel lymph node was very effective showing in the lymphadenectomy a high percentage of pathologic negative lymph nodes (9/12) and an overall tumour response of 40% (8/20) with 4/20 (20%) completely pathological response and 4/20 (20%) cases with only isolated malignant cells. No significant financial relationships to disclose.
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Affiliation(s)
- U. Bohn
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - M. Pavcovich
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - P. Jimenez
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - M. Hernandez
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - M. Lloret
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - M. Cazorla
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - I. Reyes
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - T. Baratta
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
| | - C. Bustos
- Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain; Hospital Universitario Materno Infantil, Las Palmas, Spain; Hospital Universitario Insular, Las Palmas, Spain; Hospital Universitario Dr. Negrin, Las Palmas, Spain; Servicio Canario de Salud, Las Palmas, Spain
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Greig D, Castro P, Gabrielli L, Miranda R, Verdejo H, Alcaíno H, Bustos C, Chiong M, Godoy I, Mellado R, García L, Salas D, Vivar R, Vukasovic JL, Concepción R, Díaz-Araya G. Inflamación y disfunción endotelial en pacientes con insuficiencia cardiaca crónica. Rev Med Chil 2008. [DOI: 10.4067/s0034-98872008000600001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Greig D, Castro P, Gabrielli L, Miranda R, Verdejo H, Alcaíno H, Bustos C, Chiong M, Godoy I, Mellado R, García L, Salas D, Vivar R, Vukasovic JL, Concepción R, Díaz-Araya G. [Inflammation and endothelial dysfunction in patients with chronic heart failure]. Rev Med Chil 2008; 136:687-693. [PMID: 18769823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND In chronic heart failure (CHF), endothelial dysfunction (ED) is a consequence of an imbalance of vascular tone regulating substances. The relationship between ED and inflammation has not been fully investigated. AIM To assess the association between inflammation and ED in CHF. MATERIAL AND METHODS Forty two patients aged 56+/-14 years (80% male) with a CHF in functional capacity II-III (New York Heart Association) and an ejection fraction (FE) <40% were consecutively studied. Patients were classified according to the presence or absence of ED, evaluated by reactive vasodilation measured by ultrasound, after brachial artery compression. Circulating levels of highly sensitive C reactive protein (usCRP), tumor necrosis factor a (TNFá) and interleukin-6 (IL-6) were determined by ELISA. A group of 15 healthy subjects of similar age, were studied as controls. RESULTS Sixty seven percent of patients had ED. Compared to controls, patients with CHF had higher usCRP (0.58+/-0.4 and 4.9+/-7.1 mg/dl respectively, p <0.01) and IL-6 (1.38+/-0.06 and 3.1+/-1.7 mg/dl respectively, p <0.01). Compared to patients without ED, patients with CHF and ED had higher levels of usCRP (3.0+/-0.4 and 6.0+/-5.7 mg/dl respectively, p <0.01) and TNFá (0.31+/-0.26 and 1.0+/-1.1 pg/ml, p =0.02). No differences in IL-6 were found between CHF groups. CONCLUSIONS In CHF patients, the presence of ED was associated with increased levels of inflammatory markers.
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Affiliation(s)
- Douglas Greig
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Marcoleta 367, Santiago, Chile
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Castro PF, Miranda R, Verdejo HE, Greig D, Gabrielli LA, Alcaino H, Chiong M, Bustos C, Garcia L, Mellado R, Vukasovic JL, Godoy I, Lavandero S. Pleiotropic Effects of Atorvastatin in Heart Failure: Role in Oxidative Stress, Inflammation, Endothelial Function, and Exercise Capacity. J Heart Lung Transplant 2008; 27:435-41. [DOI: 10.1016/j.healun.2008.01.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Revised: 12/12/2007] [Accepted: 01/08/2008] [Indexed: 11/16/2022] Open
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Nacheva PM, Moeller Chávez G, Bustos C, Garzón Zúñiga MA, Hornelas Orozco Y. Comparison of bioreactors with different kinds of submerged packed beds for domestic wastewater treatment. Water Sci Technol 2008; 58:29-36. [PMID: 18653933 DOI: 10.2166/wst.2008.321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The performance of aerobic submerged packed bed reactors was studied for the treatment of domestic wastewater using different kinds of packing materials with high specific areas (760-1,200 m(2)/m(3)). The tested materials were ceramic spheres, crushed tezontle, grains of high density polyethylene (HDPE), of low density polyethylene (LDPE) and of polypropylene (PP), cubes of polyurethane (PU) and polyethylene tape (SESSIL). The bioreactors were operated in continuous regime, applying organic loads in the range of 0.8-6.0 g COD.m(-2).d(-1). The obtained specific COD removal rates were very similar in all the reactors when they were operated at organic loads up to 2.0 g COD.m(-2).d(-1), after which differences in effectiveness appeared and the best results were determined in the reactors with SESSIL, LDPE and PU. Very low TSS, O&G and turbidity were obtained in all the effluents. The NH(3)-N and TN removals were dependent on the dissolved oxygen (DO) concentration and the removals at DO of 5 mg/l were 84-99% and 61-74% respectively. The best removals were determined in the reactors with PU, SESSIL and LDPE. The reactor with tezontle had also a good performance when operated with loads up to 1.0 g TN.m(-2).d(-1). The best phosphate removals (38-49%) were obtained in the reactors with PU, tezontle, ceramic sheres and SESSIL.
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Affiliation(s)
- P Mijaylova Nacheva
- Mexican Institute of Water Technology, Paseo Cuauhnáhuac 8532, Col. Progreso, Jiutepec, Morelos, México.
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Sánchez C, Bustos C, Alvarado F, Schott E, Gatica N, Bernede JC. Synthesis, characterization and properties of polymers containing simultaneously the imine and amide moieties. e-Polymers 2007. [DOI: 10.1515/epoly.2007.7.1.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract We present the synthesis of polymers by means of self-condensation of ethyl 3-aminophenyl acetate, using HCl as catalyst at high temperature and reduced pressure. This polymer was fractionated by successive precipitation from mixtures of methanol/diethylether of different polarity, yielding three polymeric fractions: Poly A, Poly B and Poly C. Likewise, under the same conditions, 3- aminophenyl acetic acid yields only one polymeric fraction, Poly D. These polymers were characterized by elemental analysis, IR and, in some cases, by 1H-NMR and X-Ray Photoelectron Spectroscopy (XPS). The obtained results show that polymers can be classified as hybrid materials, because in the backbone, they contain simultaneously the amide and imine groups and, at the end of the chain, they have amine and carboxylic acid functions. High solubility of some of these polymers in DMF or methanol has permitted the determination of viscosities and the preparation of films. Poly B and Poly C films exhibit amorphous morphology; and Poly D display spherullitic-type semi-crystallization pattern. The polymers can absorb solvents and they can swell up forming large-sized gels in DMF and methanol. Besides these polymers have high thermal stability that reaches a weight loss of 11.60% at 353 °C.
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Affiliation(s)
- Christian Sánchez
- 1Instituto de Química, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Carlos Bustos
- 1Instituto de Química, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Fabiola Alvarado
- 1Instituto de Química, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Eduardo Schott
- 1Instituto de Química, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile
| | - Nicolas Gatica
- 2Departamento de Polímeros, Facultad de Química, Universidad de Concepción, Avda. Edmundo Larenas 129, Concepción, Chile
| | - Jean-Christian Bernede
- 3Laboratoire de Matériaux Photovoltaiques, Faculté de Sciences, Université de Nantes, BP 92208, 2, Rue de la Houssinière 44322, Nantes Cedex 3, France
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Bustos C, Sánchez C, Ugarte R, Schott E, Carey DML, Carrillo D. Reactivity of [Mo(NHNRPh)(NNRPh)(acac)X2] (R=Ph, Me; X=Br, I) toward tertiary phosphines. J COORD CHEM 2007. [DOI: 10.1080/00958970601103027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Carlos Bustos
- a Instituto de Química, Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Christian Sánchez
- a Instituto de Química, Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Ricardo Ugarte
- a Instituto de Química, Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Eduardo Schott
- a Instituto de Química, Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Desmond Mac-Leod Carey
- b Departamento de Química Inorgánica , Pontificia Universidad Católica de Chile , Avda, Vicuña Mackenna 4860, Santiago de Chile, Chile
| | - David Carrillo
- c Instituto de Química , Pontificia Universidad Católica de Valparaíso , Avda Brasil 2950, Valparaíso, Chile
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Bustos C, sánchez C, Ugarte R, Schott E, Carey DM, Carrillo D. Reactivity of organohydrazidomolybdenum(VI) complexes toward tertiary phosphines. J COORD CHEM 2007. [DOI: 10.1080/00958970600853317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Carlos Bustos
- a Instituto de Química , Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Christian sánchez
- a Instituto de Química , Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Ricardo Ugarte
- a Instituto de Química , Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Eduardo Schott
- a Instituto de Química , Universidad Austral de Chile , Casilla 567, Valdivia, Chile
| | - Desmond Macleod Carey
- b Departamento de Química , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860, Santiago de Chile, Chile
| | - David Carrillo
- c Instituto de Química , Pontificia Universidad Católica de Valparaíso , Avenida Brasil 2950, Valparaíso, Chile
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Salgado G, Navarrete J, Bustos C, Sánchez C, Ugarte R. Quimioluminiscencia electrogenerada del luminol usando electrodos de bajo costo. QUIM NOVA 2006. [DOI: 10.1590/s0100-40422006000200033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Díaz-Tapia V, Billeke P, Bustos C, López M, Segovia D. [Seasonal variations in the symptoms of cerebrovascular disease. A study of hospital admission rates]. Rev Neurol 2004; 39:1196-7. [PMID: 15625642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Affiliation(s)
- V Díaz-Tapia
- Departamento de Neurología y Neurocirugía, Hospital Clínico de la Universidad de Chile, Santiago de Chile, Chile.
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Bustos C, Hasenknopf B, Thouvenot R, Vaissermann J, Proust A, Gouzerh P. Cover Picture: Lindqvist‐Type (Aryldiazenido)polyoxomolybdates − Synthesis, and Structural and Spectroscopic Characterization of Compounds of the Type (
n
Bu
4
N)
3
[Mo
6
O
18
(N
2
Ar)] (Eur. J. Inorg. Chem. 15/2003). Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Carlos Bustos
- Instituto de Quimica, Universidad Austral de Chile, Casilla 567, Valdivia, Chile
| | - Bernold Hasenknopf
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
| | - René Thouvenot
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
| | - Jacqueline Vaissermann
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
| | - Anna Proust
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
| | - Pierre Gouzerh
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR CNRS 7071, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
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Bustos C, Hasenknopf B, Thouvenot R, Vaissermann J, Proust A, Gouzerh P. Lindqvist-Type (Aryldiazenido)polyoxomolybdates − Synthesis, and Structural and Spectroscopic Characterization of Compounds of the Type (nBu4N)3[Mo6O18(N2Ar)]. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300112] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Martínez AM, Medina CJ, Bustos C, Hernández JAG. Assessment of breast lesions using Doppler with contrast agents. EUR J GYNAECOL ONCOL 2003; 24:527-30. [PMID: 14658595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
OBJECTIVE To evaluate the use of contrast agents on ultrasound examination of breast lesions and to analyse the capacity of this technique to achieve a differential diagnosis of benign and malignant lesions, using as a pattern a histological study of the lesions. MATERIALS AND METHODS Seventy-two women with suspected malignant breast lesions participated in this randomised prospective study, undergoing a colour Doppler ultrasound (US). The results of the study were measured before and after the use of US contrast agents and were compared with the ones obtained from the histological study of the pieces. RESULTS Malignant breast tumours showed, when using US Doppler with contrast agent, a hypervascularity pattern in 78.1% of the cases. The predominant pattern in benign tumours was avascular (11 cases, 64.7%). The intensity of the signal in the first minute was intense in 43.7% or moderate in 40.6% of the cases with malignant tumours versus the benign tumours where no signal was registered in 64.7% of the cases. A marked increase in the sensitivity and the predictive negative value of the ultrasound signal was noted with the use of potentiating substances. CONCLUSIONS The use of contrast agents in colour Doppler US studies improve the differential diagnosis of benign and malignant breast lesions.
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Affiliation(s)
- A M Martínez
- The Breast Pathology Unit of the University Hospital of the Canaries, Department of Obstetrics and Gynecology, Maternal University Hospital of the Canaries, Las Palmas de Gran Canaria, Spain
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Araya MV, Madariaga C, Ureta C, Tomé M, Bustos C. [Major depression as a new risk factor for coronary heart disease in Chile]. Rev Med Chil 2002; 130:1249-56. [PMID: 12587507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
BACKGROUND Major depression, a frequent psychiatric disease, is associated with ischemic heart disease. It is usually subdiagnosed and subtreated. AIM To study the prevalence of major depression among survivors of an acute myocardial infarction. PATIENTS AND METHODS Retrospective study of 42 survivors of an acute myocardial infarction treated at a regional Chilean Hospital. The presence of major depression in the 6 months previous to the acute myocardial infarction, was investigated using the diagnostic instruments CIDI (Composite International Diagnostic Interview) and DIS (Diagnostic Interview Schedule), psychiatric diagnoses were based on DSMIII-R. The prevalence of depression was compared with that observed in a group of 156 healthy subjects participating in a psychiatric epidemiological study. RESULTS Major depression was diagnosed in 12 male subjects with an acute myocardial infarction. The prevalence in the control group was significantly lower (15%, p < 0.049). Patients with depression were older and required longer hospital stay than patients without depression. CONCLUSIONS Patients with acute myocardial infarction, had a significantly greater prevalence of major depression in the previous 6 months, than the general population. Thus, major depression could be an independent and modifiable coronary risk factor.
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Affiliation(s)
- María Virginia Araya
- Centro de Cardiología Cardiokines Clinics, Servicio de Psiquiatría, Unidad de Epidemiología, Hospital Dr. E Torres G. Iquique, Chile.
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Bustos C, Manzur C, Carrillo D, Robert F, Gouzerh P. Synthesis and Characterization of Molybdenum Complexes Containing both End-on Organohydrazido(1-) and Organohydrazido(2-) Ligands. X-Ray Crystal Structures of [Mo(NHNPh2)(NNPh2)(acac)Cl2] and [Mo(NHNMePh)(NNMePh)(acac)Cl2]. Inorg Chem 2002. [DOI: 10.1021/ic00085a035] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bustos C, Manzur C, Carrillo D, Robert F, Gouzerh P. Synthesis, Characterization, and Reactivity of Molybdenum Organohydrazido(2-) Complexes with Phosphines as Ancillary Ligands. X-ray Structures of [Mo(NNPh2)2Cl2(PPh3)] and [Mo(NNMePh)2Cl2(PPh3)2].cntdot.0.5CH2Cl2. Inorg Chem 2002. [DOI: 10.1021/ic00100a017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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Bustos C, Burckhardt O, Schrebler R, Carrillo D, Arif AM, Cowley AH, Nunn CM. Synthesis, characterization, and electrochemistry of cis-dioxomolybdenum(VI) complexes of Schiff bases derived from carbohydrazide, thiocarbohydrazide, and salicylaldehyde. Crystal structures of [MoO2(o-OC6H4CH:NN:CSNHN:CHC6H4OH-o)Me2SO] and [(MoO2)2(o-OC6H4CH:NN:CONN:CHC6H4O-o)(Me2SO)2].cntdot.0.5Me2SO. Inorg Chem 2002. [DOI: 10.1021/ic00345a017] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Millán J, Blanco-Colio L, Valderrama M, Álvarez-Sala L, Bustos C, Ortego M, Cancelas P, Hernández-Presa M, Gerique J, Egido J. Postprandial lipemia activates NF-KB in peripheral blood mononuclear cells of healthy volunteers. Protective effect of red wine intake. ATHEROSCLEROSIS SUPP 2001. [DOI: 10.1016/s1567-5688(01)80038-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Blanco-Colio LM, Valderrama M, Alvarez-Sala LA, Bustos C, Ortego M, Hernández-Presa MA, Cancelas P, Gómez-Gerique J, Millán J, Egido J. Red wine intake prevents nuclear factor-kappaB activation in peripheral blood mononuclear cells of healthy volunteers during postprandial lipemia. Circulation 2000; 102:1020-6. [PMID: 10961967 DOI: 10.1161/01.cir.102.9.1020] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Several epidemiological studies have demonstrated the beneficial effect of red wine intake in reducing total and cardiovascular mortality. This effect has been attributed in part to its antioxidant properties. Because the monocytes/macrophages and the nuclear transcription factor kappaB (NF-kappaB) are implicated in the pathogenesis of atherosclerotic lesions, we examined the effect of red wine intake on the activation of NF-kappaB in peripheral blood mononuclear cells. METHODS AND RESULTS Sixteen healthy volunteers were studied 3 times each: after a moderate dose, a low dose, and no wine with a fat-enriched breakfast. Lipid profile and NF-kappaB activation (electrophoretic mobility shift assay) were examined in blood samples taken before and 3, 6, and 9 hours after wine intake. In addition, mononuclear cells were incubated with VLDL in the presence of some antioxidants (quercetin and alpha-tocopherol succinate) contained in red wine to study their effects on NF-kappaB activation. Subjects receiving a fat-enriched breakfast had increased NF-kappaB activation in peripheral blood mononuclear cells coinciding with the augmentation in total triglycerides and chylomicrons. Red wine intake prevented NF-kappaB activity even though it induced a certain increase in serum lipids, particularly VLDL, that did not increase after the fat ingestion alone. However, another form of alcohol intake (vodka) did not modify the NF-kappaB activation provided by postprandial lipemia. In cultured mononuclear cells, isolated human VLDL caused NF-kappaB activation in a time-dependent manner that did not occur in the presence of the red wine antioxidants quercetin and alpha-tocopherol. CONCLUSIONS Our results provide a new potential mechanism to explain the beneficial effects of red wine intake in the reduction of cardiovascular mortality.
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Affiliation(s)
- L M Blanco-Colio
- Research Laboratory, Instituto de Investigación Médica, Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Spain
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Bustos C, Salgado G, Martínez R, Carrière F. Determinacion de la configuracion E-Z de los acidos Fumarico y Maleico. Un experimento orientado a incentivar el desarrollo de la investigacion cientifica en alumnos de Pregrado. QUIM NOVA 2000. [DOI: 10.1590/s0100-40422000000400023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Ortego M, Bustos C, Hernández-Presa MA, Tuñón J, Díaz C, Hernández G, Egido J. Atorvastatin reduces NF-kappaB activation and chemokine expression in vascular smooth muscle cells and mononuclear cells. Atherosclerosis 1999; 147:253-61. [PMID: 10559511 DOI: 10.1016/s0021-9150(99)00193-8] [Citation(s) in RCA: 255] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cardiovascular mortality, mainly due to the rupture of unstable atherosclerotic plaques, is reduced by 3-hydroxy-methyl-glutaryl-coenzyme A (HMG-CoA) reductase inhibitors. Inflammatory cells, attracted to the vascular lesion by chemokines, have been implicated in the process of the plaque rupture. In cultured vascular smooth muscle cells (VSMC) and U937 mononuclear cells we have studied the effect of Atorvastatin (Atv) on nuclear factor kappaB (NF-kappaB) activity, an inducer of the mRNA expression of chemokines such as interferon-inducible protein 10 (IP-10) and monocyte chemoattractant protein 1 (MCP-1). Angiotensin II (Ang II) and tumor necrosis factor alpha (TNF-alpha) increased NF-kappaB activity in VSMC (2 and 5-fold, respectively). Preincubation of cells with 10(-7) mol/l Atv diminished this activation (44 and 53%). The inhibition was reversed by mevalonate, farnesylpyrophosphate (FPP) and geranylgeranylpyrophosphate (GGPP), but not by other isoprenoids. Coinciding with the NF-kappaB activation in VSMC, there was a diminution of cytoplasmic IkappaB levels that was recovered by pretreatment with Atv. Ang II and TNF-alpha induced the expression of IP-10 (1.5 and 3.4-fold) and MCP-1 (2.4 and 4-fold) in VSMC. Atv reduced this overexpression around 38 and 35% (IP-10), and 54 and 39% (MCP-1), respectively. Our results strongly suggest that Atv, through the inhibition of NF-kappaB activity and chemokine gene expression, could reduce the inflammation within the atherosclerotic lesion and play a role in the stabilization of the lesion.
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Affiliation(s)
- M Ortego
- Research Laboratory, Fundación Jiménez Díaz, Autonoma University, Avda Reyes Católicos 2, 28040, Madrid, Spain
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