1
|
Bachtarzi N, Gomri MA, Meradji M, Gil-Cardoso K, Ortega N, Chomiciute G, Del Bas JM, López Q, Martínez V, Kharroub K. In vitro assessment of biofunctional properties of Lactiplantibacillus plantarum strain Jb21-11 and the characterization of its exopolysaccharide. Int Microbiol 2024; 27:239-256. [PMID: 37286917 DOI: 10.1007/s10123-023-00387-5] [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: 03/10/2023] [Revised: 05/25/2023] [Accepted: 06/01/2023] [Indexed: 06/09/2023]
Abstract
ABSTACT The microbiota of traditional food provides a rich reservoir of biodiversity to find new strains with interesting features for novel functional food formulation. Therefore, this study aimed to investigate the biofunctional potential of the lactic acid bacteria (LAB) strain Jb21-11 isolated from Jben, a traditional Algerian fresh cheese. This isolate was selected out of a collection of 154 LAB based on its exopolysaccharide (EPS) phenotype and was preliminarily identified by polyphasic characterization as Lactiplantibacillus plantarum (previously known as Lactobacillus plantarum) and its biofunctional properties were then assessed in vitro. The tested strain demonstrated good resistance to gastric juice, acidity around pH 2, and 2% (v/v) bile salts, which are important characteristics for potential biofunctional LAB candidates. It also showed a good production of ropy EPS with 674 mg/L on MRS medium. However, this ability appears to compromise the adhesion of the strain to Caco-2 cells (less than 1%), which according to our results, seems not to be related to autoaggregation and hydrophobicity (44.88 ± 0.028% and 16.59 ± 0.012%). Furthermore, promising antimicrobial activity against three pathogenic bacteria (Escherichia coli, Staphylococcus aureus, and Salmonella) was detected probably due to antimicrobial metabolites excreted during fermentation process into the medium. Moreover, the strain L. plantarum Jb21-11 displayed a therapeutic functionality with both anti-inflammatory and immunomodulatory action using RAW 264.7 cells. The chemical features of the novel ropy Jb21-11-EPS were also investigated revealing the presence of three monosaccharides, namely, mannose, galactose, and glucose, with a molar ratio of 5.42:1.00:4.52 linked together by α- and β-glycosidic bonds, presenting a relatively high molecular weight of 1.08 × 105 Da of interest for a texturing potential. Therefore, the new producing EPS strain Jb21-11 is a promising candidate for use as an adjunct culture for improving the texture of functional food.
Collapse
Affiliation(s)
- Nadia Bachtarzi
- Laboratory of Biotechnology and Food Quality (BIOQUAL), Institute of Nutrition, Food and Agri-Food Technologies (INATAA), University of Mentouri Brother's Constantine 1 (UFMC1), Road of Ain El Bey, 25000, Constantine, Algeria.
| | - Mohamed Amine Gomri
- Laboratory of Biotechnology and Food Quality (BIOQUAL), Institute of Nutrition, Food and Agri-Food Technologies (INATAA), University of Mentouri Brother's Constantine 1 (UFMC1), Road of Ain El Bey, 25000, Constantine, Algeria
| | - Meriem Meradji
- Laboratory of Biotechnology and Food Quality (BIOQUAL), Institute of Nutrition, Food and Agri-Food Technologies (INATAA), University of Mentouri Brother's Constantine 1 (UFMC1), Road of Ain El Bey, 25000, Constantine, Algeria
| | - Katherine Gil-Cardoso
- Eurecat, Centre Tecnològic de Catalunya, Technological Unit of Nutrition and Health, Reus, Spain
| | - Nàdia Ortega
- Eurecat, Centre Tecnològic de Catalunya, Technological Unit of Nutrition and Health, Reus, Spain
| | - Gertruda Chomiciute
- Eurecat, Centre Tecnològic de Catalunya, Technological Unit of Nutrition and Health, Reus, Spain
| | | | - Quiro López
- Creaciones Aromáticas Industriales SA, Cuatrecasas i Arimí, 2, 08192, Sant Quirze del Vallès, Barcelona, Spain
| | - Vanesa Martínez
- Creaciones Aromáticas Industriales SA, Cuatrecasas i Arimí, 2, 08192, Sant Quirze del Vallès, Barcelona, Spain
| | - Karima Kharroub
- Laboratory of Biotechnology and Food Quality (BIOQUAL), Institute of Nutrition, Food and Agri-Food Technologies (INATAA), University of Mentouri Brother's Constantine 1 (UFMC1), Road of Ain El Bey, 25000, Constantine, Algeria
| |
Collapse
|
2
|
Galán Carrillo I, Galbis Martínez L, Martínez V, Roca Meroño S, Ramos F, González Rodríguez JD, Piñero Fernández J, Guillén Navarro E. EL MANEJO MULTIDISCIPLINAR MEJORA EL DIAGNÓSTICO GENÉTICO DE LAS ENFERMEDADES RENALES HEREDITARIAS EN LA ERA DE NEXT GENERATION SEQUENCING (NGS). Nefrologia 2022. [DOI: 10.1016/j.nefro.2022.11.003] [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] Open
|
3
|
Yanes MIL, Diaz-Curiel M, Peris P, Vicente C, Marin S, Ramon-Krauel M, Hernandez J, Broseta JJ, Espinosa L, Mendizabal S, Perez-Sukia L, Martínez V, Palazón C, Piñero JA, Calleja MA, Espin J, Arborio-Pinel R, Ariceta G. Health-related quality of life of X-linked hypophosphatemia in Spain. Orphanet J Rare Dis 2022; 17:298. [PMID: 35906684 PMCID: PMC9336088 DOI: 10.1186/s13023-022-02452-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/17/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Health-related quality of life (HRQoL) of patients with X-linked hypophosphatemia (XLH) is lower than that of both the general population and the patients with other chronic diseases, mainly due to diagnostic delay, treatment difficulties, poor psychosocial support, and problems with social integration. Early diagnosis and optimal treatment are paramount to control the disease in patients with XLH, avoid complications, and maintain or improve their HRQoL. We, therefore, analyzed the HRQoL of pediatric and adult patients with XLH treated with conventional therapy in Spain. RESULTS We used several versions of the EuroQol-5 dimensions (EQ-5D) instrument according to the age of patients with XLH. Then we compared the HRQoL of patients to that of the general Spanish population. Children with XLH (n = 21) had moderate problems in walking about (61.9%), washing or dressing themselves (9.52%), and performing their usual activities (33.33%). They also felt moderate pain or discomfort (61.9%) and were moderately anxious or depressed (23.81%). Adults with XLH (n = 29) had lower HRQoL, with problems in walking (93%, with 3.45% unable to walk independently), some level of pain (86%, with 3.45% experiencing extreme pain), problems with their usual activities (80%) and self-care (> 50%), and reported symptoms of anxiety and/or depression (65%). There were important differences with the general Spanish population. CONCLUSIONS XLH impacts negatively on physical functioning and HRQoL of patients. In Spanish patients with XLH, the HRQoL was reduced despite conventional treatment, clearly indicating the need to improve the therapeutic approach to this disorder.
Collapse
Affiliation(s)
- M I Luis Yanes
- Hospital Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain.
| | | | - P Peris
- Hospital Clínic, Barcelona, Spain
| | - C Vicente
- Hospital Virgen de Arrixaca, Murcia, Spain
| | - S Marin
- Hospital Sant Joan de Déu, Esplugues de Llobregat (Barcelona), Spain
| | - M Ramon-Krauel
- Hospital Sant Joan de Déu, Esplugues de Llobregat (Barcelona), Spain
| | | | | | | | | | | | - V Martínez
- Hospital Virgen de Arrixaca, Murcia, Spain
| | - C Palazón
- Hospital Virgen de Arrixaca, Murcia, Spain
| | - J A Piñero
- Hospital Virgen de Arrixaca, Murcia, Spain
| | - M A Calleja
- Hospital Virgen de la Macarena, Seville, Spain
| | - J Espin
- Escuela Andaluza de Salud Pública, Granada, Spain
| | | | - G Ariceta
- Hospital Vall d'Hebron, Barcelona, Spain
| |
Collapse
|
4
|
Simões IT, Aranda F, Casadó-Llombart S, Velasco-de Andrés M, Català C, Álvarez P, Consuegra-Fernández M, Orta-Mascaró M, Merino R, Merino J, Alberola-Ila J, González-Aseguinolaza G, Carreras E, Martínez V, Lozano F. Multifaceted effects of soluble human CD6 in experimental cancer models. J Immunother Cancer 2020; 8:jitc-2019-000172. [PMID: 32217757 PMCID: PMC7174071 DOI: 10.1136/jitc-2019-000172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2020] [Indexed: 12/11/2022] Open
Abstract
Background CD6 is a lymphocyte surface co-receptor physically associated with the T-cell receptor (TCR)/CD3 complex at the center of the immunological synapse. There, CD6 assists in cell-to-cell contact stabilization and modulation of activation/differentiation events through interaction with CD166/ALCAM (activated leukocyte cell adhesion molecule), its main reported ligand. While accumulating evidence is attracting new interest on targeting CD6 for therapeutic purposes in autoimmune disorders, little is known on its potential in cancer. In an attempt to elucidate the in vivo relevance of blocking CD6-mediated interactions in health and disease, we explored the consequences of expressing high circulating levels of a soluble form CD6 (sCD6) as a decoy receptor. Methods High sCD6 serum levels were achieved by using transgenic C57BL/6 mice expressing human sCD6 under the control of lymphoid-specific transcriptional elements (shCD6LckEμTg) or wild type either transduced with hepatotropic adeno-associated virus coding for mouse sCD6 or undergoing repeated infusions of recombinant human sCD6 protein. Characterization of sCD6-induced changes was performed by ex vivo flow cytometry and functional analyses of mouse lymphoid organ cells. The in vivo relevance of those changes was explored by challenging mice with subcutaneous or metastatic tumors induced by syngeneic cancer cells of different lineage origins. Results Through a combination of in vitro and in vivo studies, we show that circulating sCD6 expression induces defective regulatory T cell (Treg) generation and function, decreased CD166/ALCAM-mediated tumor cell proliferation/migration and impaired galectin-induced T-cell apoptosis, supporting the fact that sCD6 modulates antitumor lymphocyte effector function and tumorigenesis. Accordingly, sCD6 expression in vivo resulted in delayed subcutaneous tumor growth and/or reduced metastasis on challenge of mice with syngeneic cancer cells. Conclusions Evidence is provided for the disruption of CD6 receptor–ligand interactions as a feasible immunomodulatory approach in cancer.
Collapse
Affiliation(s)
- Inês T Simões
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Fernando Aranda
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Sergi Casadó-Llombart
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - María Velasco-de Andrés
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Cristina Català
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Pilar Álvarez
- Departamento de Biología Molecular, Universidad de Cantabria-IDIVAL, Santander, Cantabria, Spain
| | - Marta Consuegra-Fernández
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Marc Orta-Mascaró
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Ramón Merino
- Instituto de Biomedicina y Biotecnología de Cantabria, CSIC-UC, Santander, Cantabria, Spain
| | - Jesús Merino
- Departamento de Biología Molecular, Universidad de Cantabria-IDIVAL, Santander, Cantabria, Spain
| | - José Alberola-Ila
- Arthritis and Clinical Immunology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | | | - Esther Carreras
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Vanesa Martínez
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain
| | - Francisco Lozano
- Immunoreceptors del Sistema Innat i Adaptatiu, Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Catalunya, Spain .,Departament de Biomedicina, Facultat de Medicina, Universitat de Barcelona, Barcelona, Barcelona, Spain.,Servei d'Immunologia, Hospital Clínic de Barcelona, Barcelona, Spain
| |
Collapse
|
5
|
González N, Zapata J, Martínez V, Gadow R, García J. Manufacturing parameter analysis for alumina coating on steel substrate by automated image processing of isolated splats samples. PLoS One 2020; 15:e0240928. [PMID: 33119624 PMCID: PMC7595332 DOI: 10.1371/journal.pone.0240928] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/05/2020] [Indexed: 11/29/2022] Open
Abstract
Thermal spray technology, which involves the Atmospheric Plasma Spraying (APS), encompasses a category of coating processes that supply surface properties to protect or improve the performance of a substrate or component. The coating produced by this technology is built by overlapped splats, whose morphology determines the coating properties. In the same way, the splats obtained in a separated distribution by interposing a perforated mask but using the same thermal spray parameters, has a relationship with the overlapped splats inside the coating. The samples with isolated splats have the advantage of being faster and cheaper to generate and analyse. This article analyses alumina plasma-sprayed splats on steel substrates by image processing techniques, which recognize individual splats and their corresponding morphology (doughnut and pancake) parameters. These parameters allow the user to efficiently classify the splats. After that classification, a quality control can be implemented by comparison between the original and checked sample of isolated splats and a new sample obtained during a small interruption in the normal operation. Additionally, these parameters obtained in an automated way can be used to evaluate the effect of different selections of spraying process parameters.
Collapse
Affiliation(s)
- N. González
- Departamento de Ingeniería Mecánica, Universidad Polite´cnica de Cartagena, Cartagena, Spain
| | - J. Zapata
- Departamento de Electrónica, Tecnología de Computadoras y Proyectos, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - V. Martínez
- Institute for Manufacturing Technologies of Ceramic Components and Composites (IMCCC), University of Stuttgart, Stuttgart, Germany
| | - R. Gadow
- Institute for Manufacturing Technologies of Ceramic Components and Composites (IMCCC), University of Stuttgart, Stuttgart, Germany
| | - J. García
- Departamento de Ingeniería Mecánica, Universidad Polite´cnica de Cartagena, Cartagena, Spain
| |
Collapse
|
6
|
Fernández I, Fernández M, Marín P, Martínez V, Molero F, Borrás A, Gómez M, Laínez E, Cruz P, Molo C, Recio M, Argudo C, Rodríguez C. P-08-9 Female Genital Self Image Scale: Adaptation and Validation INTO Spanish. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2020.04.371] [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: 12/01/2022]
|
7
|
Cerezuela P, Salgado M, Gallardo E, Muñoz-Langa J, Castellón V, Barbosa M, Beato C, Martínez de Castro E, Martínez V, García-Escobar I, Doménech P, Guijarro R, Hervás D, Merino M, de Miguel Y, Colomé E, Trujillo-Santos J. Characterization of thrombosis risk in patients with cancer. Thromb Res 2018. [DOI: 10.1016/j.thromres.2018.02.121] [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: 10/17/2022]
|
8
|
Coderch L, Oliver MA, Martínez V, Manich AM, Rubio L, Martí M. Exogenous and endogenous lipids of human hair. Skin Res Technol 2017; 23:479-485. [DOI: 10.1111/srt.12359] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2017] [Indexed: 11/27/2022]
Affiliation(s)
- L. Coderch
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| | - M. A. Oliver
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| | - V. Martínez
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| | - A. M. Manich
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| | - L. Rubio
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| | - M. Martí
- Institute of Advanced Chemistry of Catalonia; IQAC-CSIC; Barcelona Spain
| |
Collapse
|
9
|
Muñoz A, Ortega I, Font C, Pachón V, Castellón V, Martínez V, Salgado M, Martínez E, Calzas J, Souto J, Salas E, Soria Fernández J. OC-1b: A new genetic risk score for predicting venous thromboembolism events in cancer patients receiving chemotherapy. Thromb Res 2017. [DOI: 10.1016/s0049-3848(17)30080-4] [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: 11/26/2022]
|
10
|
García Angulo J, Martínez V, Escribá F, Argente P. Management of the difficult airway in the syndrome saethre chotzen. Trends in Anaesthesia and Critical Care 2017. [DOI: 10.1016/j.tacc.2017.01.032] [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: 10/20/2022]
|
11
|
Dueñas M, Martínez V, López F, Martínez M, Rubio C, Segovia C, Teijeira A, Villacampa F, Vicente Á, Paramio J. BMP-4 production by bladder cancer cells favors tumor progression and promotes the development of a pro-tumoral immune environment. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw525.32] [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: 11/12/2022] Open
|
12
|
Broto JM, Fumagalli E, Martínez V. Phase II, singlearm, nonrandomized, and multicenter clinical trial of regorafenib (REG) as a single agent in the firstline setting for patients with metastatic and/or unresectable KIT/PDGFR wild-type GIST. A GEIS and ISG study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw388.28] [Citation(s) in RCA: 1] [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: 11/13/2022] Open
|
13
|
Jardí F, Fernández-Blanco JA, Martínez V, Vergara P. Persistent alterations in colonic afferent innervation in a rat model of postinfectious gut dysfunction: Role for changes in peripheral neurotrophic factors. Neurogastroenterol Motil 2016; 28:693-704. [PMID: 26768324 DOI: 10.1111/nmo.12766] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/02/2015] [Indexed: 01/08/2023]
Abstract
BACKGROUND Visceral hypersensitivity in the inflamed gut is related partly to the effects of peripheral neurotrophic factors (NTFs) on local afferent neurons. However, alterations in sensory afferents of distant areas remain unexplored. Using the Trichinella spiralis infection model, which causes a jejunitis, we investigated the remodeling of colonic afferents and the potential role of NTFs. METHODS Rats were infected with T. spiralis. Inflammatory-like changes, mucosal mast cells (MMCs) dynamics, and expression of nerve growth factor and glial cell line-derived NTFs (glial cell-derived neurotrophic factor, artemin, and neurturin) were determined in the colon up to day 30 postinfection. Functional responses of colonic afferents were determined assessing changes in the expression of sensory-related markers in thoracolumbar (TL)/lumbosacral (LS) dorsal root ganglias (DRGs) following intracolonic capsaicin. KEY RESULTS Trichinella spiralis induced an inflammatory-like response within the colon, partly resolved at day 30 postinfection, except for a persistent MMC infiltrate. While the jejunum of infected animals showed an up-regulation in the expression of NTFs, a transitory down-regulation was observed in the colon. Overall, T. spiralis effects on DRGs gene expression were restricted to a transient down-regulation of TPRV1. Stimulation with intracolonic capsaicin induced a down-regulation of TRPV1 levels in TL and LS DRGs, an effect enhanced in LS DRGs of infected animals, regardless the postinfection time considered. CONCLUSIONS & INFERENCES During intestinal inflammation, spread morphological and functional alterations, including remodeling of visceral afferents, are observed outside the primary region affected by the insult. Similar mechanisms might be operating in states of widespread alterations of visceral sensitivity.
Collapse
Affiliation(s)
- F Jardí
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - J A Fernández-Blanco
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - V Martínez
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain.,Instituto de Neurociencias, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - P Vergara
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain.,Instituto de Neurociencias, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| |
Collapse
|
14
|
Rubio L, Alonso C, Martí M, Martínez V, Coderch L. Influence of vehicles on antioxidant efficacy in hair. RSC Adv 2016. [DOI: 10.1039/c5ra26815j] [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: 11/21/2022] Open
Abstract
Microspheres are the best vehicle to increase the antioxidant efficacy of gallic acid in hair.
Collapse
Affiliation(s)
- L. Rubio
- Instituto de Química Avanzada de Cataluña IQAC-CSIC
- 08034 Barcelona
- Spain
| | - C. Alonso
- Instituto de Química Avanzada de Cataluña IQAC-CSIC
- 08034 Barcelona
- Spain
| | - M. Martí
- Instituto de Química Avanzada de Cataluña IQAC-CSIC
- 08034 Barcelona
- Spain
| | - V. Martínez
- Instituto de Química Avanzada de Cataluña IQAC-CSIC
- 08034 Barcelona
- Spain
| | - L. Coderch
- Instituto de Química Avanzada de Cataluña IQAC-CSIC
- 08034 Barcelona
- Spain
| |
Collapse
|
15
|
Porta-Sales J, Pérez C, Escobar Y, Martínez V. Diagnosis and management of breakthrough cancer pain: Have all the questions been resolved? A Delphi-based consensus assessment (DOIRON). Clin Transl Oncol 2015; 18:945-54. [PMID: 26693731 DOI: 10.1007/s12094-015-1468-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 09/16/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To ascertain the level of agreement and achieve a consensus among cancer pain specialists in Spain with regard to the optimal definition, diagnosis, and management of breakthrough cancer pain (BTcP). DESIGN Two-round Delphi methodology survey (February-May 2013) using seven-point Likert scales (ranging from 1 "strongly disagree" to 7 "strongly agree") was carried out. Mean scores >5 or <3 indicated, respectively, agreement or disagreement. Scores from 3 to 5 indicated no consensus. RESULTS A total of 126 experienced specialists were surveyed. Response rates were 68 % in round 1 and 90 % in round 2. Agreement (mean Likert score) was strongest for the proposed BTcP definition (6.6), the use of oral (6.1), and intranasal (6.0) transmucosal fentanyl, the need for early assessment after BTcP treatment initiation, and the need to improve staff knowledge of BTcP. Broad agreement was also reached regarding the need to systematically screen all cancer patients for BTcP (5.9). Most respondents (82 %) considered strong opioids to be appropriate treatment. In contrast, no consensus was reached regarding strong opioid treatment for baseline pain as a prerequisite for BTcP diagnosis. CONCLUSIONS Consensus was strong for most treatment, and diagnostic aspects were evaluated in the study. However, several important issues remain unresolved, particularly whether the diagnostic criteria must include strong opioids for background pain. Nurses' awareness and understanding of BTcP was considered insufficient, and more training is needed in this area. Overall, agreement among specialists was good, but more work is needed to better define the optimal diagnostic features and treatments for this condition.
Collapse
Affiliation(s)
- J Porta-Sales
- Palliative Care Service, Institut Català d'Oncologia (ICO), Bellvitge Biomedical Research Institute (IDIBELL), WeCare Chair: End of Life Care, Institut Català d'Oncologia, Barcelona, Spain
| | - C Pérez
- Pain Clinic, Hospital Universitario de la Princesa, C/Diego de León 62, 28002, Madrid, Spain
| | - Y Escobar
- Department of Medical Oncology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | | |
Collapse
|
16
|
Castañeda S, Cantero J, Alegre C, Chamizo E, García A, García M, Garmendia E, Hernández M, Hidalgo C, Juan A, Martínez J, Martínez V, Monteagudo I, Naranjo A, Orte J, Pérez M, Rodríguez C, Rosas J, De Toro F. SAT0363 Agreement Degree on the Adherence to Disease-Modifying Antirrheumatic Drugs (DMARD) Treatment in Rheumatoid Arthritis in Spain. Results of the Observar Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3624] [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]
|
17
|
Dalmau J, Peña-Quintana L, Moráis A, Martínez V, Varea V, Martínez M, Soler B. Quantitative analysis of nutrient intake in children under 3 years old. ALSALMA study. Anales de Pediatría (English Edition) 2015. [DOI: 10.1016/j.anpede.2015.03.001] [Citation(s) in RCA: 1] [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: 01/11/2023] Open
|
18
|
Abstract
Alterations in the composition of the commensal microbiota (dysbiosis) seem to be a pathogenic component of functional gastrointestinal disorders, mainly irritable bowel syndrome (IBS), and might participate in the secretomotor and sensory alterations observed in these patients.We determined if a state antibiotics-induced intestinal dysbiosis is able to modify colonic pain-related and motor responses and characterized the neuro-immune mechanisms implicated in mice. A 2-week antibiotics treatment induced a colonic dysbiosis (increments in Bacteroides spp, Clostridium coccoides and Lactobacillus spp and reduction in Bifidobacterium spp). Bacterial adherence was not affected. Dysbiosis was associated with increased levels of secretory-IgA, up-regulation of the antimicrobial lectin RegIIIγ, and toll-like receptors (TLR) 4 and 7 and down-regulation of the antimicrobial-peptide Resistin-Like Molecule-β and TLR5. Dysbiotic mice showed less goblet cells, without changes in the thickness of the mucus layer. Neither macroscopical nor microscopical signs of inflammation were observed. In dysbiotic mice, expression of the cannabinoid receptor 2 was up-regulated, while the cannabinoid 1 and the mu-opioid receptors were down-regulated. In antibiotic-treated mice, visceral pain-related responses elicited by intraperitoneal acetic acid or intracolonic capsaicin were significantly attenuated. Colonic contractility was enhanced during dysbiosis. Intestinal dysbiosis induce changes in the innate intestinal immune system and modulate the expression of pain-related sensory systems, an effect associated with a reduction in visceral pain-related responses. Commensal microbiota modulates gut neuro-immune sensory systems, leading to functional changes, at least as it relates to viscerosensitivity. Similar mechanisms might explain the beneficial effects of antibiotics or certain probiotics in the treatment of IBS.
Collapse
Key Words
- AMP, antimicrobial peptide
- CB1/2, cannabinoid receptor type 1 or 2
- FGD, functional gastrointestinal disorder
- FISH, fluorescent in situ hybridization
- GCM, gut commensal microbiota
- GI, gastrointestinal
- IBS, irritable bowel syndrome
- MOR, mu-opioid receptor
- NGF, nerve growth factor
- PPR, pattern recognition receptor
- RELMβ, resistin-like molecule-β
- RT-qPCR, reverse transcription quantitative polymerase chain reaction
- Reg3γ, regenerating islet-derived protein 3 gamma
- SFB, segmented filamentous bacteria
- TLR, toll-like receptor
- TPH 1/2, tryptophan hydroxylase isoforms 1 or 2
- TRPV1/3, transient receptor potential vanilloid types 1 or 3
- cannabinoid receptors
- colonic motility
- gut commensal microbiota
- iNOS, inducible nitric oxide synthase
- innate immune system
- intestinal dysbiosis
- opioid receptors
- sIgA, secretory IgA
- visceral sensitivity
Collapse
Affiliation(s)
- M Aguilera
- Department of Cell Biology; Physiology and Immunology; Universitat Autònoma de Barcelona; Barcelona, Spain,Neuroscience Institute; Universitat Autònoma de Barcelona; Barcelona, Spain
| | - M Cerdà-Cuéllar
- Centre de Recerca en Sanitat Animal (CReSA); UAB-IRTA; Universitat Autònoma de Barcelona, and Institut de Recerca i Tecnologia Agroalimentàries (IRTA); Barcelona, Spain
| | - V Martínez
- Department of Cell Biology; Physiology and Immunology; Universitat Autònoma de Barcelona; Barcelona, Spain,Neuroscience Institute; Universitat Autònoma de Barcelona; Barcelona, Spain,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd); Instituto de Salud Carlos III; Madrid, Spain,Correspondence to: Vicente Martínez;
| |
Collapse
|
19
|
Gimeno V, Díaz-López L, Simón-Grao S, Martínez V, Martínez-Nicolás JJ, García-Sánchez F. Foliar potassium nitrate application improves the tolerance of Citrus macrophylla L. seedlings to drought conditions. Plant Physiol Biochem 2014; 83:308-15. [PMID: 25218731 DOI: 10.1016/j.plaphy.2014.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 08/11/2014] [Indexed: 05/18/2023]
Abstract
Scarcity of water is a severe limitation in citrus tree productivity. There are few studies that consider how to manage nitrogen (N) nutrition in crops suffering water deficit. A pot experiment under controlled-environment chambers was conducted to explore if additional N supply via foliar application could improve the drought tolerance of Citrus macrophylla L. seedlings under dry conditions. Two-month-old seedlings were subjected to a completely random design with two water treatments (drought stress and 100% water/field capacity). Plants under drought stress (DS) received three different N supplies via foliar application (DS: 0, DS + NH4NO3: 2% NH4NO3, DS + KNO3: 2% KNO3). KNO3-spraying increased leaf and stem DW as compared with DS + NH4NO3 and DS treatments. Leaf water potential (Ψw) was decreased by drought stress in all the treatments. However, in plants from DS + NH4NO and DS + KNO3, this was due to a decrease in the leaf osmotic potential, whereas the decrease in those from the DS treatment was due to a decrease in the leaf turgor potential. These responses were correlated with the leaf proline and K concentrations. DS + KNO3-treated plants had a higher leaf proline and K concentration than DS-treated plants. In terms of leaf gas exchange parameters, it was observed that net assimilation of CO2 [Formula: see text] was decreased by drought stress, but this reduction was much lower in DS + KNO3-treated plants. Thus, when all results are taken into account, it can be concluded that a 2% foliar-KNO3 application can enhance the tolerance of citrus plants to water stress by increasing the osmotic adjustment process.
Collapse
Affiliation(s)
- V Gimeno
- Department of Agronomy, ISA University, Av. Antonio Guzmán Fdez. Km 5½, PO Box 166 La Herradura, Santiago, Dominican Republic.
| | - L Díaz-López
- Centro de Bioplantas, Universidad de Ciego de Ávila, Ctra a Morón, Km 9½, Ciego De Ávila, Cuba
| | - S Simón-Grao
- Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, Espinardo, 30100 Murcia, Spain
| | - V Martínez
- Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, Espinardo, 30100 Murcia, Spain
| | - J J Martínez-Nicolás
- EPSO, Univ. Miguel Hernández, Ctra. Beniel Km 3.2, 03312 Orihuela, Alicante, Spain
| | - F García-Sánchez
- Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, Espinardo, 30100 Murcia, Spain
| |
Collapse
|
20
|
Dalmau J, Moráis A, Martínez V, Peña-Quintana L, Varea V, Martínez MJ, Soler B. [Evaluation of diet and nutrient intake in children under three years old. ALSALMA pilot study]. An Pediatr (Barc) 2013; 81:22-31. [PMID: 24182736 DOI: 10.1016/j.anpedi.2013.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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: 06/07/2013] [Revised: 10/01/2013] [Accepted: 10/04/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE The present study evaluates energy and nutrient intake in Spanish children under three years of age, and compares the results with the current recommendations in order to identify possible inadequate nutrient intake. PATIENTS AND METHODS A cross-sectional pilot study. The mothers completed a diet diary for four non-consecutive days, recording the products and amounts consumed by their children. Nutrient intake was calculated, and the results were compared with the dietary reference intakes (DRI) for each age group. RESULTS A total of 188 children (93 boys and 95 girls) aged 0-6 (n=41), 7-12 (n=24), 13-24 (n=57), and 25-36 months (n=66) were included. Statistically significant differences in DRI were observed for most of the nutrients analyzed. Protein intake, in particular was 376% of DRI in children between 1-3 years of age. By age groups, 96% of the children aged 7-12 months, 88% of the children aged 13-24 months, and 97% of the children aged 25-36 months showed protein intakes more than two-fold DRI. CONCLUSIONS Nutrient intake differed from the DRI, particularly as regards proteins. A new study is required to determine whether the observed study deviations could be representative of the national population of this age group, as well as the possible effects on child health.
Collapse
Affiliation(s)
- J Dalmau
- Unidad de Nutrición y Metabolopatías, Hospital Infantil La Fe, Valencia, España
| | - A Moráis
- Unidad de Nutrición Infantil y Enfermedades Metabólicas, Hospital Universitario La Paz, Madrid, España
| | - V Martínez
- Centro de Salud El Llano, Gijón, Asturias, España
| | - L Peña-Quintana
- Unidad de Gastroenterología y Nutrición Pediátrica, Hospital Universitario Materno Infantil, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, España
| | - V Varea
- Sección de Gastroenterología, Hepatología y Nutrición, Hospital Sant Joan de Déu, Unidad de Gastroenterología Pediátrica del Departament de Pediatría, Institut Dexeus, Barcelona, España
| | - M J Martínez
- Sección de Gastroenterología, Hepatología y Nutrición, Hospital Infantil Niño Jesús, Madrid, España
| | - B Soler
- Departamento médico, E-C-BIO, S.L., Madrid, España.
| |
Collapse
|
21
|
Aguilera M, Vergara P, Martínez V. Stress and antibiotics alter luminal and wall-adhered microbiota and enhance the local expression of visceral sensory-related systems in mice. Neurogastroenterol Motil 2013; 25:e515-29. [PMID: 23711047 DOI: 10.1111/nmo.12154] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 04/19/2013] [Indexed: 12/17/2022]
Abstract
BACKGROUND Stress leads to altered gastrointestinal neuro-immune responses. We characterized the interaction between stress and gut commensal microbiota and their role modulating colonic responses to stress, the induction of inflammation, the expression of sensory-related markers, and visceral sensitivity. METHODS C57BL/6N female mice were treated (7 days, PO) with non-absorbable-broad spectrum antibiotics (bacitracin/neomycin, 0.4 mg per mouse per day). Simultaneously, mice were subjected to a 1 h per day (7 days) session of psychological stress (water avoidance stress, WAS). Luminal and wall-adhered microbiota were characterized by fluorescent in situ hybridization. Cannabinoid receptors 1 and 2 (CB1/2), tryptophan hydroxylase 1 and 2 (TPH1/2), and inflammatory markers were quantified by reverse transcription-quantitative real-time PCR (RT-qPCR) and secretory-IgA (s-IgA) by ELISA. Visceral sensitivity was assessed after the intracolonic administration of capsaicin. KEY RESULTS Antibiotics did not affect the defecatory and endocrine responses to stress. However, antibiotics diminished by 2.5-folds total bacterial counts, induced a specific dysbiosis and favored bacterial wall adherence. Combining antibiotics and stress resulted in further reductions in bacterial counts and a dysbiosis, with enhanced bacterial wall adherence. Luminal s-IgA levels increased in dysbiotic mice. Nevertheless, no alterations consistent with the induction of colonic inflammation were observed. Dysbiosis upregulated CB2 expression and stress upregulated CB2 and TPH1 expression. Stress enhanced visceral pain-related responses, an effect prevented by antibiotic treatment. CONCLUSIONS & INFERENCES Manipulations of the commensal microbiota and the interaction host-microbiota are able to modulate the local expression of neuro-immune-endocrine systems within the colon, leading to a modulation of visceral sensitivity. These mechanisms might contribute to the pathogenic and protective roles of microbiota in gastrointestinal homeostasis.
Collapse
Affiliation(s)
- M Aguilera
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | | |
Collapse
|
22
|
Aguilera M, Vergara P, Martínez V. Environment-related adaptive changes of gut commensal microbiota do not alter colonic toll-like receptors but modulate the local expression of sensory-related systems in rats. Microb Ecol 2013; 66:232-243. [PMID: 23666270 DOI: 10.1007/s00248-013-0241-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 04/26/2013] [Indexed: 06/02/2023]
Abstract
Pathogenic and protective roles have been attributed to gut commensal microbiota (GCM) in gastrointestinal inflammatory and functional disorders. We have shown that the adaptation to a new environment implies specific changes in the composition of GCM. Here we assessed if environment-related adaptive changes of GCM modulate the expression of colonic Toll-like receptors (TLRs) and sensory-related systems in rats. Adult male SD rats were maintained under different environmental conditions: barrier-breed-and-maintained, barrier-breed adapted to conventional conditions or conventional-breed-and-maintained. Fluorescent in situ hybridization and real-time quantitative PCR (qPCR) were used to characterize luminal ceco-colonic microbiota. Colonic expression of TLR2, TLR4, TLR5, and TLR7, cannabinoid receptors (CB1/CB2), μ-opioid receptor (MOR), transient receptor potential vanilloid (TRPV1, TRPV3, and TRPV4), protease-activated receptor 2 (PAR-2), and calcitonin gene-related peptide were quantified by RT-qPCR. CB1, CB2 and MOR expression, was evaluated also by immunohistochemistry. In rats, housing-related environmental conditions induce specific changes of GCM, without impact on the expression of TLR-dependent bacterial recognition systems. Expression of sensory-related markers (MOR, TRPV3, PAR-2, and CB2) decreased with the adaptation to a conventional environment, correlating with changes in Bacteroides spp., Lactobacillus spp., and Bifidobacterium spp. counts. This suggests an interaction between GCM and visceral sensory mechanisms, which might be part of the mechanisms underlying the beneficial effects of some bacterial groups on functional and inflammatory gastrointestinal disorders.
Collapse
Affiliation(s)
- M Aguilera
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | | |
Collapse
|
23
|
Abstract
OBJECTIVES In an endemic area for leishmaniosis and filariasis, coinfection can occur and the immunomodulation triggered by Wolbachia infection might influence the clinical signs and progression of both diseases. The aims of this study were to determine the prevalence of Wolbachia in dogs infected with Dirofilaria immitis and other filarial nematodes, to evaluate the prevalence of coinfection of Leishmania infantum, filariae and Wolbachia and their association with clinical presentation. METHODS Polymerase chain reaction assays were performed to detect filarial species, Wolbachia species and Leishmania in 118 samples of dogs from southeastern Spain with leishmaniosis and/or filariasis. RESULTS Ninety-eight dogs were infected with Leishmania and 49 had filarial infection (29 were coinfected with both). Wolbachia DNA was detected in 30·6% of filariae-positive dogs (15/49). Dogs coinfected with Leishmania and filaria had more severe clinical signs. Wolbachia infection was significantly (P=0·026) more frequent in dogs that were not infected with Leishmania. There was no correlation between outcome and coinfection with these pathogens. CLINICAL SIGNIFICANCE This study highlights the increased sensitivity of polymerase chain reaction in the diagnosis of filariasis, confirms the presence of Wolbachia in dogs from the Mediterranean basin, shows the increased severity of clinical signs when Leishmania-filarial coinfection is present and suggests a protective role of Wolbachia in leishmaniosis.
Collapse
Affiliation(s)
- M D Tabar
- Hospital Veterinario San Vicente, San Vicente del Raspeig, Alicante, Spain
| | | | | | | |
Collapse
|
24
|
Jardí F, Martínez V, Vergara P. NGF is involved in oral ovalbumin-induced altered colonic contractility in rats: evidence from the blockade of TrkA receptors with K252a. Neurogastroenterol Motil 2012; 24:e580-90. [PMID: 23072452 DOI: 10.1111/nmo.12027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Nerve growth factor (NGF)-mucosal mast cell (MMC) interaction has been implicated in the remodeling of enteric circuitries and associated functional changes. We investigated the involvement of NGF and its receptor TrkA in the altered colonic contractile activity observed in the model of oral ovalbumin (OVA)-induced MMC hyperactivity in rats. We also studied the role of colonic MMCs as a source of NGF. METHODS Rats received oral OVA, alone or with the TrkA antagonist K252a. Colonic co-expression of NGF/TrkA and rat mast cell protease II (RMCPII) (double immunofluorescence), RMCPII content (ELISA) and expression of NGF, Brain-derived neurotrophic factor (BDNF) and TrkA/B (QT-PCR) were assessed. Colonic contractile activity was determined in vivo and in vitro. KEY RESULTS TrkA, but not NGF, was localized in colonic MMCs (RMCPII-positive). Oral ovalbumin exposure increased colonic RMCPII levels but did not change the percentage of TrkA-positive MMCs. Neither OVA nor K252a, alone or combined, altered NGF, BDNF or TrkA/B expression. Spontaneous colonic activity in vivo and in vitro was altered by OVA, an effect prevented by K252a. Electrical stimulation-induced contractile responses in vivo and carbachol responses in vitro were increased by OVA in a K252a-independent manner. In OVA-treated animals, inhibition of NO synthesis with l-NNA significantly enhanced spontaneous colonic activity in vitro, a response completely prevented by K252a. CONCLUSIONS & INFERENCES These results suggest that NGF-TrkA-dependent pathways are implicated in colonic contractile alterations observed during OVA exposure in rats. NGF-TrkA system might represent a potential target for treatment of gastrointestinal disorders characterized by colonic motor alterations.
Collapse
Affiliation(s)
- F Jardí
- Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | | | | |
Collapse
|
25
|
Martínez V, Ugartondo V, Vinardell MP, Torres JL, Mitjans M. Grape epicatechin conjugates prevent erythrocyte membrane protein oxidation. J Agric Food Chem 2012; 60:4090-4095. [PMID: 22480260 DOI: 10.1021/jf2051784] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Epicatechin conjugates obtained from grape have shown antioxidant activity in various systems. However, how these conjugates exert their antioxidant benefits has not been widely studied. We assessed the activity of epicatechin and epicatechin conjugates on the erythrocyte membrane in the presence and absence of a peroxyl radical initiator, to increase our understanding of their mechanisms. Thus, we studied cell membrane fluidity by fluorescence anisotropy measurements, morphology of erythrocytes by scanning electron microscopy, and finally, red cell membrane proteins by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Our data showed that incubation of red cells in the presence of epicatechin derivatives altered membrane fluidity and erythrocyte morphology but not the membrane protein pattern. The presence in the medium of the peroxyl radical initiator 2,2'-azobis(amidinopropane) dihydrochloride (AAPH) resulted in membrane disruptions at all levels analyzed, causing changes in membrane fluidity, cell morphology, and protein degradation. The presence of antioxidants avoided protein oxidation, indicating that the interaction of epicatechin conjugates with the lipid bilayer might reduce the accessibility of AAPH to membranes, which could explain in part the inhibitory ability of these compounds against hemolysis induced by peroxidative insult.
Collapse
Affiliation(s)
- V Martínez
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Spain
| | | | | | | | | |
Collapse
|
26
|
Fernández-Blanco JA, Barbosa S, Sánchez de Medina F, Martínez V, Vergara P. Persistent epithelial barrier alterations in a rat model of postinfectious gut dysfunction. Neurogastroenterol Motil 2011; 23:e523-33. [PMID: 21895877 DOI: 10.1111/j.1365-2982.2011.01777.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Mucosal mast cells (MMCs), epithelial barrier function (EBF) and the enteric nervous system (ENS) are interactive factors in the pathophysiology of functional gastrointestinal disorders. We characterized postinfectious EBF alterations in the Trichinella spiralis infection model of MMC-dependent intestinal dysfunction in rats. METHODS Sprague-Dawley rats were infected with T. spiralis. 30 ± 2 days postinfection, jejunal EBF (electrophysiological parameters, fluorescein isothiocyanate-dextran fluxes and responses to secretagogues and MMC degranulators) was evaluated (Ussing chamber). In some experiments, participation of secretomotor neurons was examined by tetrodotoxin (TTX) pretreatment. Jejunal histology and MMC count and activity were also assessed. KEY RESULTS 30 ± 2 days postinfection, when only a low grade inflammation was observed, increased MMC number and activity were associated with altered EBF. EBF alterations were characterized by increased mucosal permeability and ion secretion. In T. spiralis-infected animals, secretory responses to serotonin (5-HT) and immunoglobulin E (IgE)-dependent activation of MMCs were reduced. In contrast, responses to substance P (SP) and capsaicin were similar in infected and noninfected animals. Neuronal blockade with TTX altered secretory responses to SP and capsaicin only in infected rats. CONCLUSIONS & INFERENCES Trichinella spiralis infection in rats, at late stages, results in persistent postinfectious intestinal barrier dysfunctions and mucosal mastocytosis, with other signs suggestive of a low grade inflammation. The altered permeability and the TTX-independent hyporesponsiveness to 5-HT and IgE indicate epithelial alterations. Changes in responses to SP and capsaicin after neuronal blockade suggest an ENS remodeling during this phase. Similar long-lasting neuro-epithelial alterations might contribute to the pathophysiology of functional and postinfectious gastrointestinal disorders.
Collapse
Affiliation(s)
- J A Fernández-Blanco
- Department of Cell Biology, Physiology and Immunology, Veterinary School, Universidad Autónoma de Barcelona, Barcelona, Spain
| | | | | | | | | |
Collapse
|
27
|
Martínez V, Galbiati V, Vinardell M, Corsini E, Mitjans M. Establishment of an in vitro photoassay test using THP-1 cells and IL-8 to discriminate photoirritants from photoallergens. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.580] [Citation(s) in RCA: 1] [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: 11/26/2022]
|
28
|
Levchenko G, Bukin GV, Terekhov SA, Gaspar AB, Martínez V, Muñoz MC, Real JA. Pressure-induced cooperative spin transition in ironII 2D coordination polymers: room-temperature visible spectroscopic study. J Phys Chem B 2011; 115:8176-82. [PMID: 21599006 DOI: 10.1021/jp201585x] [Citation(s) in RCA: 13] [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: 11/28/2022]
Abstract
For the 2D coordination polymers [Fe(3-Fpy)(2)M(II)(CN)(4)] (M(II) = Ni, Pd, Pt), the pressure-induced spin crossover behavior has been investigated at 298 K by monitoring the distinct optical properties associated with each spin state. Cooperative first-order spin transition characterized by a piezohysteresis loop ca. 0.1 GPa wide was observed for the three derivatives. Application of the mean field regular solution theory has enabled estimation of the cooperative parameter, Γ(p), and the enthalpy, ΔH(HL)(p), associated with the spin transition for each derivative. These values, found in the intervals 6.8-7.9 and 18.6-20.8 kJ mol(-1), respectively, are consistent with those previously reported for thermally induced spin transition at constant pressure for the title compounds (Chem.-Eur. J.2009, 15, 10960). Relevance of the elastic energy, Δ(elast), as a corrective parameter accounting for the pressure dependence of the critical temperature of thermally induced spin transitions (Clausius-Clapeiron equation) is also demonstrated and discussed.
Collapse
Affiliation(s)
- G Levchenko
- Donetsk Physical & Technical Institute, The National Academy of Sciences of Ukraine, Donetsk, Ukraine.
| | | | | | | | | | | | | |
Collapse
|
29
|
López-Siguero JP, López-Canti LF, Espino R, Caro E, Fernández-García JM, Gutiérrez-Macías A, Rial JM, Lechuga JL, Macías F, Martínez-Aedo MJ, Rico S, Rodríguez I, Guillén J, Arroyo FJ, Bernal S, Espigares R, Núñez M, Escribano A, Barrionuevo JL, Gentil J, Barrios V, Fernández-Nistal A, Martos-Moreno GA, Martínez V, Argente J. Effect of recombinant growth hormone on leptin, adiponectin, resistin, interleukin-6, tumor necrosis factor-α and ghrelin levels in growth hormone-deficient children. J Endocrinol Invest 2011; 34:300-6. [PMID: 20634639 DOI: 10.1007/bf03347090] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [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: 12/14/2022]
Abstract
BACKGROUND Treatment with GH promotes linear growth and decreases body fat in patients with isolated GH deficiency (GHD). However, few studies have analyzed how GH replacement modifies ghrelin levels and the adipokine profile and the relationship of these modifications with the metabolic changes. AIMS To analyze the eventual differences between serum levels of leptin, leptin soluble receptor (sOBR), resistin, adiponectin, interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), total (TG) and acylated ghrelin (AG) and lipid and glycemic profiles in children with GHD, as well as to determine the effect of GH replacement on these parameters during the first year of therapy. SUBJECTS AND METHODS Thirty pre-pubertal (Tanner stage I) GHD children and 30 matched controls were enrolled. Children with GHD were studied before and after 6 and 12 months of GH treatment. Weight, height, BMI, fasting glucose, insulin, lipid profile and serum levels of adipokines and ghrelin were studied at every visit. Adi - pokines, insulin and ghrelin levels were determined by using commercial radio- and enzymoimmunoassays. RESULTS At baseline children with GHD had significantly higher sOBR (p<0.01) and adiponectin (p<0.01) levels than controls. Treatment with GH resulted in a decline in leptin (p<0.05) and TG (p<0.001) levels, an increase of homeostasis model assessment index and restored IGF-I levels (p<0.001). CONCLUSIONS These data indicate that GH replacement has a negative effect on leptin levels and may also produce a slight unfavorable effect on carbohydrate metabolism. In addition, the changes observed in the adipokine profile appear to be independent of body mass index.
Collapse
|
30
|
Feliu J, Borrega P, León A, López-Gómez L, López M, Castro J, Belda-Iniesta C, Barriuso J, Martínez V, González-Barón M. Phase II study of a fixed dose-rate infusion of gemcitabine associated with erlotinib in advanced pancreatic cancer. Cancer Chemother Pharmacol 2010; 67:215-21. [PMID: 20927525 DOI: 10.1007/s00280-010-1472-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 09/13/2010] [Indexed: 12/21/2022]
Abstract
PURPOSE To evaluate the feasibility, toxicity and efficacy of the combination regimen consisting of gemcitabine-FDR infusion plus erlotinib, in ACP patients. METHODS Forty-two patients with histologically confirmed, locally advanced or metastatic pancreatic cancer were included in this phase II trial. Main objectives were to assess the efficacy and safety of this regimen. Therapeutic regimen consisted of gemcitabine 1,200 mg/m(2) in 120-min infusion on days 1, 8 and 15, plus erlotinib 100 mg orally once daily. Cycles were repeated every 28 days. RESULTS A total of 160 courses of gemcitabine-FDR erlotinib were administered (median 3.8 courses per patient). The most common grade 3-4 AEs were neutropenia (21%), thrombocytopenia (10%), skin rash (10%) and asthenia (10%). Complete response was achieved in one patient (2%) and 11 (26%) achieved a partial response. Stable disease and progression disease were observed in 11 patients (26%) and 19 (45%), respectively. Median time to progression was 5 months (95%CI: 3.9-5.8 months) and median overall survival was 8 months (95% CI: 5.1-10.8). One-year survival rate was 35%. CONCLUSIONS A regimen consisting of gemcitabine-FDR infusion plus erlotinib is active and well tolerated in APC patients. However, the results do not justify the conduct of a Phase III trial.
Collapse
Affiliation(s)
- J Feliu
- Medical Oncology Department, Hospital Universitario La Paz, IDIPAZ, Pº de Castellana 261, 28046 Madrid, Spain.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
González-Del Angel A, Bermúdez-López C, Alcántara-Ortigoza MA, Vela-Amieva M, Castillo-Cruz RA, Martínez V, Torres-Espíndola L. Thiopurine S-methyltransferase (TPMT) genetic polymorphisms in Mexican newborns. J Clin Pharm Ther 2010; 34:703-8. [PMID: 20175804 DOI: 10.1111/j.1365-2710.2009.01058.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Thiopurine S-methyltransferase (TPMT) is involved in the toxicity and therapeutic efficacy of thiopurine drugs, and its gene exhibits genetic polymorphisms that differ across diverse populations. Four TPMT polymorphisms (TPMT*2, *3A, *3B and *3C) account for 80-95% of alleles that cause reduced enzyme activity. To date, only a single study in the Mexican population involving 108 individuals has been performed, but the regional and ethnic origin of this population was not described. Accordingly, information about the TPMT polymorphism in the Mexican population is limited. OBJECTIVE To determine the TPMT allele and genotype frequencies in a sample of newborns from Mexico City. METHODS Three hundred and sixty DNA samples from unrelated, anonymous individuals were obtained from dried blood spots collected on filter paper as part of the Newborn Screening National Program. Allele-specific polymerase chain reaction for the TPMT*2 allele and PCR restriction fragment length polymorphism for TPMT*3A, TPMT*3B, TPMT*3C alleles were used to determine the respective allelic and genotypic frequencies. RESULTS AND DISCUSSION Of 720 TPMT alleles analysed, 49 (6.81%) were deficiency alleles. The most common deficiency allele was TPMT*3A (5.69%), followed by TPMT*3C (0.56%), TPMT*3B (0.28%) and TPMT*2 (0.28%). Fourty-five newborns were heterozygous for one mutant allele (12.5%) and two showed a genotype with two deficiency alleles (0.56%). Despite its unique ethnic composition, our Mexican population exhibited variant allele frequencies that were similar to some Caucasian populations. CONCLUSION Our data suggest that approximately 1 in 180 persons born in Mexico City might have low or undetectable TPMT enzyme activity, a frequency that, overall, is somewhat higher than that reported for Caucasian populations generally (1 in 300).
Collapse
Affiliation(s)
- A González-Del Angel
- Molecular Biology Laboratory, Genetics Department, Instituto Nacional de Pediatría, DF, México.
| | | | | | | | | | | | | |
Collapse
|
32
|
Arévalo A, Da Cunha M, Piñón P, Bouzas B, Rivera S, Martínez V, Pombo J, Doval L. La importancia de un soplo tricuspídeo. Rev Clin Esp 2010; 210:e4-6. [DOI: 10.1016/j.rce.2009.11.011] [Citation(s) in RCA: 1] [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] [Received: 08/18/2009] [Revised: 11/19/2009] [Accepted: 11/27/2009] [Indexed: 11/30/2022]
|
33
|
Beretta V, Simeone A, Elizalde JC, Franco J, Bentancur O, Ferrés A, Ayçaguer S, Iriñiz J, Martínez V. Alternative fibre sources for steers and calves fed high-grain feedlot diets. Anim Prod Sci 2010. [DOI: 10.1071/an09173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An experiment was conducted to evaluate the effect of fibre source (FS) in high-grain feedlot diets on liveweight gain (LWG) of steers and calves and carcass traits of steers at slaughter. Eighteen steers (330 ± 27.3 kg) and 18 calves (153 ± 11.9 kg) were randomly allotted within animal category to one of three high-grain diets varying in the FS, including either grass hay (H, 66% neutral detergent fibre (NDF)), rice hulls (RH, 85% NDF) or wood chips (W, 90% NDF), and a total mixed ration formulated for equal levels of digestible DM, crude protein and NDF, within category. Animals were individually fed (3 kg DM/100 kg LW, distributed in four meals) during 56 days. The LW increased linearly with time in all treatments (P < 0.01). FS did not affect calves’ LWG (P > 0.05), but it resulted in differences in steers LWG (H: 1.77b; RH: 1.51c; W: 2.02a kg/day, P < 0.05). However, no differences were observed in hot carcass weight (P > 0.05), which resulted in higher carcass yield (P < 0.05) for steers fed RH (55.0%) compared with H (53.5%) and W (53.3%). There was a significant interaction (P < 0.05) for feed : gain ratio, with an improvement of this value observed only for steers fed the W diet. Although varying the FS affected rumination of calves and steers (P < 0.01) and the time spent eating of steers (P < 0.05), it did not represent any constraint for animal production. This study suggests by-products high in fibre content, such as RH and W, could be used in substitution to H in high-grain feedlot diets when fed at equal NDF concentration in the ration, both for calves and steers. Because calves are sometimes grown on a high-concentrate diet during winter before spring grazing, further research is needed to quantify potential residual effects on LWG after they return to pasture.
Collapse
|
34
|
Sotillo E, Montoya E, Martínez V, Paz G, Armas Á, Liscano C, Hernández G, Pérez M, Andrade A, Villasmil N, Mollegas L, Hernández E, Milanes C, Rivas P. Identification of Variables That Influence Brain-Dead Donors' Family Groups Regarding Refusal. Transplant Proc 2009; 41:3466-70. [DOI: 10.1016/j.transproceed.2009.09.014] [Citation(s) in RCA: 15] [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: 11/26/2022]
|
35
|
Lamas A, López-Herce J, Sancho L, Mencía S, Carrillo A, José Santiago M, Martínez V. Responsiveness to stimuli of bispectral index, middle latency auditory evoked potentials and clinical scales in critically ill children. Anaesthesia 2008; 63:1296-301. [PMID: 19032296 DOI: 10.1111/j.1365-2044.2008.05654.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
SUMMARY We performed simultaneous recordings of Bispectral Index (BIS) and middle latency auditory evoked potentials. We also recorded two clinical scales, the Modified Ramsay scale and the COMFORT scale. Heart rate and blood pressure were measured once a day, for a maximum of 5 days, in 81 critically ill children. Changes with tactile, auditory, and painful stimuli were analysed. All the stimuli significantly increased the BIS value, the painful stimulus having the greatest effect. The painful stimulus was the only one that altered the middle latency auditory evoked potentials. Although the responses of the clinical scales to stimuli were statistically significant, they were of little clinical relevance. None of the stimuli used significantly altered the heart rate or blood pressure. We conclude that tactile, auditory and painful stimuli produced changes of little relevance in the clinical scales, BIS or middle latency auditory evoked potentials. We found the BIS was the most sensitive method and the painful stimulus had the greatest effect.
Collapse
Affiliation(s)
- A Lamas
- Pediatric Intensive Care Unit, Gregorio Marañón University General Hospital, Madrid, Spain
| | | | | | | | | | | | | |
Collapse
|
36
|
Abstract
Region II of Chile is the most important copper mining area in the world and it shows the highest lung cancer mortality rate in the country (35/100,000). The population in Antofagasta, the main city of Region II, was exposed from 1958 to 1970 to 860 microg m(-3) arsenic (As) in drinking water and has currently been declining to 40 microg m(-3). Glutathione serves as a reducing agent and glutathione S-transferase (GST) may have an important role in As methylation capacity and body retention. In the current study, the null genotype of GSTM1 and the MspI polymorphism of CYP450 1A1 were investigated in lung cancer patients and in healthy volunteers of Region II. In males, the 2A genotype of MspI represented a highly significant estimated relative lung cancer risk (OR=2.60). Relative lung cancer risk for the combined 2A/null GSTM1 genotypes was 2.51, which increased with the smoking habit (OR=2.98). In Region II, the cancer mortality rate for As-associated cancers at least partly might be related to differences in As biotransformation. Genetic biomarkers such as 2A and GSTM1 polymorphisms in addition to DR70 as screening biomarkers might provide relevant information to identify individuals with a high risk for lung cancer as prevention and protection actions to protect public health.
Collapse
Affiliation(s)
- M Adonis
- Laboratorio de Bioquímica y Toxicología Ambiental, Facultad de Medicina, ICBM, Universidad de Chile, Santiago, Chile
| | | | | | | |
Collapse
|
37
|
Ravnefjord A, Brusberg M, Larsson H, Lindström E, Martínez V. Effects of pregabalin on visceral pain responses and colonic compliance in rats. Br J Pharmacol 2008; 155:407-16. [PMID: 18574457 DOI: 10.1038/bjp.2008.259] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND PURPOSE Pregabalin, which binds to the alpha2-delta subunit of voltage-gated calcium channels, increased the threshold for pain during colorectal distension (CRD) in irritable bowel syndrome (IBS) patients. We tested the effects of oral pregabalin on the visceral pain-related viscerosomatic and autonomic cardiovascular responses to CRD and colonic compliance in rats. EXPERIMENTAL APPROACH The activity of the abdominal musculature (viscerosomatic response), monitored by electromyography and intracolonic manometry, and changes in blood pressure and heart rate, monitored by telemetry, were assessed simultaneously in conscious rats during CRD. KEY RESULTS Pregabalin (10-200 micromol kg(-1), p.o.) inhibited dose dependently the viscerosomatic response to phasic, noxious CRD (12 distensions at 80 mm Hg). At 200 mumol kg(-1), pregabalin also reduced the increase in blood pressure and heart rate associated with noxious CRD. Moreover, pregabalin (200 micromol kg(-1), p.o.) reduced the visceromotor response to ascending phasic CRD (10-80 mm Hg) and significantly increased the threshold pressure for response. During phasic CRD (2-20 mm Hg), pregabalin (200 micromol kg(-1), p.o.) increased intracolonic volume, resulting in a shift to the left of the pressure-volume relationship curve, indicative of an increase of compliance. CONCLUSIONS AND IMPLICATIONS Pregabalin reduced the viscerosomatic and autonomic responses associated with CRD-induced visceral pain and increased colonic compliance in rats. These observations confirm the analgesic activity of pregabalin on visceral pain and support the translational value of the CRD model to humans. Ligands for the alpha2-delta subunit might represent interesting compounds for the treatment of visceral pain disorders, such as IBS.
Collapse
Affiliation(s)
- A Ravnefjord
- AstraZeneca R&D, Integrative Pharmacology--GI Biology, Mölndal, Sweden
| | | | | | | | | |
Collapse
|
38
|
Hernández LC, Montoto G, Puente Rodríguez M, Galbán L, Martínez V. ‘Bone map’ for a safe placement of miniscrews generated by computed tomography. Clin Oral Implants Res 2008; 19:576-81. [DOI: 10.1111/j.1600-0501.2007.01507.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
39
|
Salleres S, Arbeloa FL, Martínez V, Arbeloa T, Arbeloa IL. Adsorption of fluorescent R6G dye into organophilic C12TMA laponite films. J Colloid Interface Sci 2008; 321:212-9. [DOI: 10.1016/j.jcis.2007.12.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Revised: 12/28/2007] [Accepted: 12/29/2007] [Indexed: 10/22/2022]
|
40
|
Wang L, Martínez V, Kimura H, Taché Y. 5-Hydroxytryptophan activates colonic myenteric neurons and propulsive motor function through 5-HT4 receptors in conscious mice. Am J Physiol Gastrointest Liver Physiol 2007; 292:G419-28. [PMID: 16990446 DOI: 10.1152/ajpgi.00289.2006] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Serotonin [5-hydroxytryptamine (5-HT)] acts as a modulator of colonic motility and secretion. We characterized the action of the 5-HT precursor 5-hydroxytryptophan (5-HTP) on colonic myenteric neurons and propulsive motor activity in conscious mice. Fos immunoreactivity (IR), used as a marker of neuronal activation, was monitored in longitudinal muscle/myenteric plexus whole mount preparations of the distal colon 90 min after an intraperitoneal injection of 5-HTP. Double staining of Fos IR with peripheral choline acetyltransferase (pChAT) IR or NADPH-diaphorase activity was performed. The injection of 5-HTP (0.5, 1, 5, or 10 mg/kg ip) increased fecal pellet output and fluid content in a dose-related manner, with a peak response observed within the first 15 min postinjection. 5-HTP (0.5-10 mg/kg) dose dependently increased Fos expression in myenteric neurons, with a maximal response of 9.9 +/- 1.0 cells/ganglion [P < 0.05 vs. vehicle-treated mice (2.3 +/- 0.6 cells/ganglion)]. There was a positive correlation between Fos expression and fecal output. Of Fos-positive ganglionic cells, 40 +/- 4% were also pChAT positive and 21 +/- 5% were NADPH-diaphorase positive in response to 5-HTP, respectively. 5-HTP-induced defecation and Fos expression were completely prevented by pretreatment with the selective 5-HT4 antagonist RS-39604. These results show that 5-HTP injected peripherally increases Fos expression in different populations of cholinergic and nitrergic myenteric neurons in the distal colon and stimulates propulsive colonic motor function through 5-HT4 receptors in conscious mice. These findings suggest an important role of activation of colonic myenteric neurons in the 5-HT4 receptor-mediated colonic propulsive motor response.
Collapse
Affiliation(s)
- L Wang
- Digestive Diseases Research Center and Center for Neurovisceral Sciences and Woman's Health, Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, USA.
| | | | | | | |
Collapse
|
41
|
Pascual-Castroviejo I, Pascual-Pascual SI, Velázquez R, Viaño J, Martínez V. [Moyamoya disease: follow-up of 12 patients]. Neurologia 2006; 21:695-703. [PMID: 17106822] [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: 05/12/2023] Open
Abstract
INTRODUCTION We present 12 patients with moyamoya disease and their evolution from an early age to adulthood in some cases. MATERIAL AND METHODS The patients (nine females and three males) were first studied before 10 years of age because of neurological disease. Bilateral carotid and vertebrobasilar arteriographies were performed during initial evaluation. In the patients who were followed-up during several or many years (in one, during 33 years and, in two, during 25 years), neuroimaging studies were done by magnetic resonance angiography (MRA). One patient also had neurofibromatosis type 1 (NF1). RESULTS All patients showed bilateral occlusion of the supraclinoid portion of the internal carotid arteries. The basilar artery was markedly narrowed in one patient. One patient with very early onset of symptoms also showed collateral vascularization through the Bernasconi- Cassinari artery. Cerebral multifocal cortical and subcortical lesions were seen in the patients who had very long follow-up, although these already had appeared in the first MR studies. One patient showed arterial moyamoya 31 images and fibromuscular dysplasia. She was the only patient treated surgically during childhood with death after a short time. Another patient had a pregnancy and vaginal delivery at 26 years of age without complications. Images of moyamoya did not disappear in any of the patients in this series. Seizures were controlled with antiepileptic medication in all patients except in one who had NF1 and severe cerebral lesions. Although it is difficult to demonstrate the efficacy of calcium-antagonist medication (nicardipine), we found that it improved the neurological symptoms in most of our patients. CONCLUSIONS Long-term follow-up of the patients in this series showed some neurological problems, although most of them did well, including those cases with early onset of symptoms. All adult patients in this series were working, although some of them in low qualified jobs. Collateral vascularization was very marked in all patients except in one who also showed fibromuscular dysplasia. Moyamoya images did not disappear in any patient. Ischemic cerebral lesions seem to be underlying the cause of the neurological sequelae. Seizures responded well to antiepileptic medication.
Collapse
|
42
|
Martínez V, Sánchez L, Busquets MA, Infante MR, Pilar Vinardell M, Mitjans M. Disturbance of erythrocyte lipid bilayer by amino acid-based surfactants. Amino Acids 2006; 33:459-62. [PMID: 17086480 DOI: 10.1007/s00726-006-0447-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 09/20/2006] [Indexed: 11/26/2022]
Abstract
In an attempt to increase our knowledge regarding the mechanisms of surfactant membrane interaction, we studied the action of several anionic and cationic amino acid-based surfactants on membrane fluidity using fluorescence anisotropy. Anisotropy measurements demonstrated that almost all of the surfactants studied disturbed the external region of the erythrocyte membrane without affecting the core of the bilayer. How the physico-chemical properties and structure of these compounds affect dynamics of the lipid bilayer is discussed in detail.
Collapse
Affiliation(s)
- V Martínez
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Spain
| | | | | | | | | | | |
Collapse
|
43
|
García-Sánchez F, Syvertsen JP, Martínez V, Melgar JC. Salinity tolerance of 'Valencia' orange trees on rootstocks with contrasting salt tolerance is not improved by moderate shade. J Exp Bot 2006; 57:3697-706. [PMID: 16980596 DOI: 10.1093/jxb/erl121] [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: 05/11/2023]
Abstract
The effects of shading in combination with salinity treatments were studied in citrus trees on two rootstocks with contrasting salt tolerance to determine if shading could reduce the negative effects of salinity stress. Well-nourished 2-year-old 'Valencia' orange trees grafted on Cleopatra mandarin (Cleo, relatively salt tolerant) or Carrizo citrange (Carr, relatively salt sensitive), were grown either under a 50% shade cloth or left unshaded in full sunlight. Half the trees received no salinity treatment and half were salinized with 50 mM Cl- during two 9 week salinity periods in the spring and autumn interrupted by an 11 week rainy period. The shade treatment reduced midday leaf temperature and leaf-to-air vapour pressure deficit regardless of salinity treatments. In non-salinized trees, shade increased midday CO2 assimilation rate (A(CO2)) and stomatal conductance, but had no effect on leaf transpiration (E(lf)). Shade also increased leaf chlorophyll and photosynthetic water use efficiency (A(CO2)/E(lf)) in leaves on both rootstocks and increased total plant dry weight in Cleo. The salinity treatment reduced leaf growth and leaf gas exchange parameters. Shade decreased Cl- concentrations in leaves of salinized Carr trees, but had no effect on leaf or root Cl- of trees on Cleo. There were no significant differences in leaf gas exchange parameters of shaded and unshaded salinized plants but the growth reduction from salinity stress was actually greater for shaded than for unshaded trees. Shaded trees on both rootstocks had higher leaf Na+ than unshaded trees after the first salinity period, and this shade-induced elevated leaf Na+ persisted after the second salinity period in trees on Carr. Thus, shading did not alleviate the negative effects of salinity on growth and Na+ accumulation.
Collapse
Affiliation(s)
- F García-Sánchez
- University of Florida, IFAS, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
| | | | | | | |
Collapse
|
44
|
Bodet E, Martínez V, Romeu C. [Cochlear involvement in acute otitis media]. Acta Otorrinolaringol Esp 2005; 56:396-9. [PMID: 16353784 DOI: 10.1016/s0001-6519(05)78636-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE An experimental design with mice has been realized to understand the origin of sensorial hearing loss related to infectious processes in the middle ear. Our aim is to study if the cilliated cells in the Corti organ's are lost after one or more acute otitis media. MATERIAL AND METHODS For that, thirty Sprague-Dawley mice have been divided in two groups. In the first one, we have induced one acute otitis media, in the second group we have induced two infections of this kind. RESULTS The statistic study shows that the loss of the cilliated cells is greater in the basal turn of the mice is cochlea, in the first group (alpha=0,020) and also in the second (alpha=0,038). We've noticed in the first group the near absence of injury in the middle turn, but in all samples of the second group we found that injury (alpha=0,002). CONCLUSIONS In acute otitis media, the loss of ciIliated cells are mainly in the basal turn of the mice is cochlea, and affects the middle turn when the infection is repeated.
Collapse
Affiliation(s)
- E Bodet
- Unidad de Otorrinolaringología Hospital Nostra Senyora de Meritxell Avinguda Fiter i Rossell, 1-13 Escaldes-Engordany.
| | | | | |
Collapse
|
45
|
García-Fontecha C, Paz P, Peiró JL, Barceló C, Martínez V, Torán N, Oria M, Rosal M, Aguirre M. Myelomeningocele in fetal rabbit: effect of preterm delivery and corticosteroid treatment. Cerebrospinal Fluid Res 2005. [DOI: 10.1186/1743-8454-2-s1-s3] [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: 11/10/2022] Open
|
46
|
Adonis M, Martínez V, Marín P, Berrios D, Gil L. Smoking habit and genetic factors associated with lung cancer in a population highly exposed to arsenic. Toxicol Lett 2005; 159:32-7. [PMID: 16099114 DOI: 10.1016/j.toxlet.2005.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2004] [Revised: 04/07/2005] [Accepted: 04/14/2005] [Indexed: 10/25/2022]
Abstract
In order to find some relationship between genetic differences in metabolic activation and detoxification of environmental carcinogens and host susceptibility to chemically induced cancers, we have investigated the distribution of the GSTM1 null genotype and CYP450 *1A1 MspI polymorphism in lung cancer patients and healthy volunteers of the second region in the north of Chile highly exposed to arsenic. The main sources of environmental arsenic exposure in Chile are copper smelting and drinking water, specially in the second region, the most important copper mining region in the world that shows the highest lung cancer mortality rate in the country (35/100.00). The population of Antofagasta, the main city of the region was exposed between 1958 and 1970 to arsenic concentrations in drinking water of 860 microg/m3, presently declining to 40 microg/m3. For men the MspI CYP1A1 *2A genotype was associated with a highly significant estimated relative lung cancer risk (O.R. = 2.60), but not GSTM1 by itself. The relative lung cancer risk for the combined 2A/null GSTM1 genotypes was 2.51, which increased with the smoking habits (O.R. = 2.98). In the second region the cancer mortality rate for As associated cancers, might be related at least part to differences in As biotransformation. In this work we demonstrate that genetic biomarkers such as CYP1A1 2A and GSTM1 polymorphisms in addition to DR70 as screening biomarkers might provide relevant information to identify individuals with higher risk for lung cancer, due to arsenic exposure.
Collapse
Affiliation(s)
- M Adonis
- Laboratorio de Bioquímica y Toxicología Ambiental, Facultad de Medicina, ICBM, Universidad de Chile, Independencia 1027, P.O. Box 70087, Santiago 7, Chile
| | | | | | | | | |
Collapse
|
47
|
Gaspar A, Agustí G, Martínez V, Muñoz M, Levchenko G, Real JA. Spin crossover behaviour in the iron(II)-2,2-dipyridilamine system: Synthesis, X-ray structure and magnetic studies. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2005.06.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
48
|
Pascual-Castroviejo I, Pascual-Pascual SI, Velázquez-Fragua R, García L, López-Gutiérrez JC, Viaño-López J, Martínez V, Palencia R. [Cutaneous hemangiomas and vascular malformations and associated pathology (Pascual-Castroviejo type II syndrome). Study of 41 patients]. Rev Neurol 2005; 41:223-36. [PMID: 16075401] [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: 05/03/2023]
Abstract
AIM To describe the clinical, diagnostic and therapeutic features of this angiomatous neurocutaneous syndrome, which is the most frequent one, and to report a personal series of 41 patients. PATIENTS AND METHODS Forty one patients--31 females and 10 males--were studied during childhood and then, several patients were followed during many years, which allowed us to learn about the evolution of the abnormalities. The cutaneous lesions were classified as hemangiomas in 30 patients (73%) and as vascular malformations in 11 patients (27%). RESULTS A cerebellar anomaly (unilateral hemispheric hypoplasia and Dandy-Walker malformation) was seen in 13 patients (31.5%) cerebral cortical dysplasia in 4 patients (10%), aortic arch coarctation in 6 patients (15%), and congenital cardiopathy in 5 patients (12%). The most frequent abnormalities were intracranial and/or extracranial vascular malformations. Persistence of the trigeminal artery was observed in 7 patients (17%), absence or severe hypoplasia of an internal carotid artery in 13 patients (32%), absence of a vertebral artery in 7 patients (17%), hypoplasia of intracranial arteries in 6 patients (15%) and aneurysmal enlargement of carotid or vertebral arteries in 5 patients (12%). Also were observed 4 patients (10%) with intracranial hemangioma, 2 (5%) with hemangioma in mediastinum, and 3 (7.5%) with intestinal hemangioma, all of which disappeared during the first years of life. Aneurysmal enlargement of the carotid and vertebral arteries and intracranial branches also disappeared after a process of progressive narrowing of the arterial lumen that caused complete obstruction of these arteries. At the same time the cutaneous hemangioma regressed. During this process, collateral vascularization through branches of the external carotid artery and of the non-affected branches of the contralateral intracranial arteries developed. CONCLUSION This neurocutaneous syndrome is the most frequent one and it is associated with several types of vascular and non-vascular abnormalities which can involve any organ of the body. Internal and external hemangiomas and hemangiomatous lesions progress and tend to regress concomitantly.
Collapse
|
49
|
Losa F, Mesia C, Domenech M, Heras L, Español I, Perez-Oleguer J, Miguel A, Gay M, Martínez V, Janártz J. P-527 Phase II trial of sequential treatment with cisplatin-gemcitabinefollowed by weekly paclitaxel in the treatment of advanced lung cancer. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81020-7] [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: 11/30/2022]
|
50
|
Rodriguez de la Rúa E, Pastor JC, Aragón J, Mayo-Iscar A, Martínez V, García-Arumí J, Giraldo A, Sanabria-Ruiz Colmenares MR, Miranda I. Interaction between surgical procedure for repairing retinal detachment and clinical risk factors for proliferative vitreoretinopathy. Curr Eye Res 2005; 30:147-53. [PMID: 15814473 DOI: 10.1080/02713680490904142] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE To asses risk factors of proliferative vitreoretinopathy (PVR) and a model for predicting it. METHODS Observational, case-control. 335 patients with non-complicated retinal detachment (RD) were included: 134 developed PVR (Cases); 201 patients did not (Controls). Risk factors for PVR were identified by multivariate analysis. Influence of variables was assayed according to the surgical approach. By logistic regression analysis a model to predict the risk of developing PVR and odds ratio (OR) values for each clinical factor were estimated. RESULTS Risk was higher in patients > 70 years and with intraocular pressure lower than 14 (OR: 3.84; CI 95%: 2.04-7.30) and in retinal breaks larger than "1 clock hour" (OR: 2.54; CI: 1.28-5.05), extended retinal detachments (OR: 4.01; CI: 1.98-8.10) and reinterventions (OR: 1.55; CI: 1.14-9.22). Scleral surgery also was a risk factor (OR: 3.89; CI: 2.12-7.14) and aphakia/pseudophakia when scleral surgery is performed (OR: 3.33; CI: 1.54-7.22). A model to predict PVR was proposed with these results. CONCLUSIONS Surgical approach modifies risk factors of PVR, and should be taken into account to improve the models for predicting it.
Collapse
Affiliation(s)
- E Rodriguez de la Rúa
- Retina Group, Instituto Universitario de Oftalmobiología Aplicada (IOBA), University of Valladolid, Valladolid, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|