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Hosiasson M, Rigotti-Thompson M, Appelgren-Gonzalez JP, Covarrubias-Escudero F, Urzua B, Barria P, Aguilar R. Biomechanical Gait Effects of a Single Intervention with Wearable Closed Loop Control FES System in Chronic Stroke Patients. A Proof-of-Concept Pilot Study. IEEE Int Conf Rehabil Robot 2023; 2023:1-6. [PMID: 37941278 DOI: 10.1109/icorr58425.2023.10304779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Foot drop is a gait disturbance characterized by difficulty in performing ankle dorsiflexion during the swing phase of the gait cycle. Current available evidence shows that functional electrical stimulation (FES) on the musculature responsible for dorsal ankle flexion during gait can have positive effects on walking ability. This study aims to present a proof of concept for a novel easy-to-use FES system and evaluates the biomechanical effects during gait in stroke patients, compared to unassisted walking. Gait was quantitatively evaluated in a movement analysis laboratory for five subjects with chronic stroke, in basal condition without assistance and in gait assisted with FES. Improvements were found in all temporospatial parameters during FES-assisted gait, evidenced by statistically significant differences only in gait speed (p=0.02). Joint kinematics showed positive changes in hip abduction and ankle dorsiflexion variables during the swing phase of the gait cycle. No significant differences were found in the Gait Deviation Index. In conclusion, the present pilot study demonstrates that the use of this FES system in the tibialis anterior muscle can cause gait functional improvements in subjects with foot drop due to chronic stroke.
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Carbone LM, Cascone G, Aguilar R. Fire frequency effects on cleistogamy expression and progeny performance in Cologania broussonetii. Plant Biol (Stuttg) 2021; 23:285-292. [PMID: 33179367 DOI: 10.1111/plb.13212] [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] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
Increased fire frequency usually erodes microenvironmental conditions, causing a drastic limitation of edaphic resources. Thus, the production of permanently closed-small flowers (cleistogamous, CL) should increase in sites with high fire frequency as this implies a less expensive reproductive assurance strategy. However, because open, insect-pollinated flowers (chasmogamous, CH) have the potential capacity to outcross via pollinators, CH progeny produced at any site should outperform selfed CL progeny. We evaluate the effect of fire frequency on the relative production of CL/CH flowers and fruits, and their seed set, along with several progeny performance parameters in Cologania broussonetii (Fabaceae), a resprouting herb with dimorphic cleistogamy native to the Chaco Serrano. Fire frequency increased cleistogamy expression, reaching extreme levels in high fire frequency sites. Seed set was similarly high for both CH and CL flowers in the unburned condition, while in burned sites the few developed CH flowers set more seeds than CL flowers. However, progeny performance was similar between CH and CL progeny at each and across all fire frequency conditions. Cleistogamy expression in C. broussonetii is maximized in abiotically degraded frequently burned habitats, although the selfed CL progeny is as successful as potentially outcrossed CH progeny. Fire frequency may decreased floral size and abundance, selecting for autogamous reproduction, which restricts not only the genetic potential of plant populations but also the resources offered to pollinators. At the community level, increased cleistogamy expression may potentially have negative implications for non-cleistogamous, more outcrossing species surviving in frequently burned environments.
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Affiliation(s)
- L M Carbone
- Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal, Córdoba, Argentina
- Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina
| | - G Cascone
- Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - R Aguilar
- Consejo Nacional de Investigaciones Científicas y Técnicas - Universidad Nacional de Córdoba, Instituto Multidisciplinario de Biología Vegetal, Córdoba, Argentina
- Laboratorio Nacional de Análisis y Síntesis Ecológica (LANASE), Universidad Nacional Autónoma de México, Morelia, México
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Aiyer I, Ghamande G, Anjam H, Aguilar R, Surani S. CHARACTERIZING THE HIGH PERIODIC LIMB INDEX PHENOTYPE IN PATIENTS WITH SLEEP APNEA. Chest 2020. [DOI: 10.1016/j.chest.2020.05.491] [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: 10/24/2022] Open
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Velez R, Domenech E, Rodríguez-Cortés A, Barrios D, Tebar S, Fernández-Arévalo A, Aguilar R, Dobaño C, Alberola J, Cairó J, Gállego M. Evaluation of canine leishmaniosis vaccine CaniLeish® under field conditions in native dog populations from an endemic Mediterranean area-A randomized controlled trial. Acta Trop 2020; 205:105387. [PMID: 32035053 DOI: 10.1016/j.actatropica.2020.105387] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 11/26/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 12/26/2022]
Abstract
Dog vaccination is considered an effective way of reducing Leishmania infantum infection incidence in the canine population, as well as its transmission to humans. However, the use of partially effective vaccines can have the detrimental effect of "masking" vaccinated asymptomatic carriers, capable of harbouring the parasite and transmitting it to naïve individuals. After eight years on the European market, few studies have been released on CaniLeish® vaccine safety and efficacy. The present study, a one-year randomized CaniLeish® vaccine field trial, was performed in a canine leishmaniosis endemic area and included animals selected from a native dog population (n = 168). No severe adverse reactions were observed in vaccinated dogs (n = 85). Cases of active L. infantum infection were detected by serological, molecular and clinical follow-up of dogs. One-year post-vaccination, no differences in number or severity of L. infantum active infections were observed between study groups (n = 4 in each group). Vaccine-induced cellular immunity, assessed through interferon-γ quantification, showed significantly higher levels of this cytokine one-month post-vaccination in the vaccine group (p < 0.001), but no differences were observed after nine months between trial groups (p = 0.078). These results fail to support the reported CaniLeish® efficacy in the prevention of active L. infantum infection in dogs from endemic areas and naturally exposed to the parasite.
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Affiliation(s)
- R Velez
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain; Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.
| | - E Domenech
- Hospital Veterinari Canis, Girona, Spain
| | - A Rodríguez-Cortés
- Departament de Farmacologia, de Terapèutica i de Toxicologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.
| | - D Barrios
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
| | - S Tebar
- Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.
| | - A Fernández-Arévalo
- Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain; Servei de Microbiologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - R Aguilar
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
| | - C Dobaño
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
| | - J Alberola
- Departament de Farmacologia, de Terapèutica i de Toxicologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.
| | - J Cairó
- Hospital Veterinari Canis, Girona, Spain.
| | - M Gállego
- ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain; Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, Spain.
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Mastrototaro F, Aguilar R, Alvarez H, Blanco J, García S, Montesanto F, Perry AL, Chimienti G. Mesophotic rocks dominated by Diazona violacea: a Mediterranean codified habitat. The European Zoological Journal 2020. [DOI: 10.1080/24750263.2020.1837972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] Open
Affiliation(s)
- F. Mastrototaro
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
| | | | | | | | | | - F. Montesanto
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
| | | | - G. Chimienti
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
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Mastrototaro F, Chimienti G, Montesanto F, Perry AL, García S, Alvarez H, Blanco J, Aguilar R. Finding of the macrophagous deep-sea ascidian Dicopia antirrhinum Monniot, 1972 (Chordata: Tunicata) in the Tyrrhenian Sea and updating of its distribution. The European Zoological Journal 2019. [DOI: 10.1080/24750263.2019.1616838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- F. Mastrototaro
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
| | - G. Chimienti
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
| | - F. Montesanto
- Department of Biology, University of Bari, Bari, Italy
- CoNISMa, Roma, Italy
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Vera Sainz A, Aguilar R, Maruri R, Garcia Guimaraes M, Rivero F, Jimenez Borreguero LJ, Alfonso F. P93Cardiac magnetic resonance beyond coronariography in spontaneus coronary artery dissection. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez110.037] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Vera Sainz
- University Hospital De La Princesa, Madrid, Spain
| | - R Aguilar
- University Hospital De La Princesa, Madrid, Spain
| | - R Maruri
- University Hospital De La Princesa, Madrid, Spain
| | | | - F Rivero
- University Hospital De La Princesa, Madrid, Spain
| | | | - F Alfonso
- University Hospital De La Princesa, Madrid, Spain
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Vera Sainz A, De La Cuerda F, Navarrete G, Antuna P, Nogales MT, Salamanca J, Rivero F, Jimenez Borreguero LJ, Alfonso F, Aguilar R. 487Predictors of CMR confirmed microvascular damage after successfully reperfused STEMI. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez123.001] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Vera Sainz
- University Hospital De La Princesa, Madrid, Spain
| | | | - G Navarrete
- University Hospital De La Princesa, Madrid, Spain
| | - P Antuna
- University Hospital De La Princesa, Madrid, Spain
| | - M T Nogales
- University Hospital De La Princesa, Madrid, Spain
| | - J Salamanca
- University Hospital De La Princesa, Madrid, Spain
| | - F Rivero
- University Hospital De La Princesa, Madrid, Spain
| | | | - F Alfonso
- University Hospital De La Princesa, Madrid, Spain
| | - R Aguilar
- University Hospital De La Princesa, Madrid, Spain
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9
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Mastrototaro F, Chimienti G, Acosta J, Blanco J, Garcia S, Rivera J, Aguilar R. Isidella elongata (Cnidaria: Alcyonacea) facies in the western Mediterranean Sea: visual surveys and descriptions of its ecological role. The European Zoological Journal 2017. [DOI: 10.1080/24750263.2017.1315745] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- F. Mastrototaro
- Department of Biology and CoNISMa LRU, University of Bari, Bari, Italy
| | - G. Chimienti
- Department of Biology and CoNISMa LRU, University of Bari, Bari, Italy
| | - J. Acosta
- Instituto Espanõl de Oceanografia, Madrid, Spain
| | | | | | - J. Rivera
- Instituto Espanõl de Oceanografia, Madrid, Spain
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Díez-Villanueva P, Antuña P, Múgica M, Belver M, Aguilar R, Alfonso F. Desensibilización a la aspirina en pacientes con síndrome coronario agudo. Med Intensiva 2016; 40:452-4. [DOI: 10.1016/j.medin.2015.12.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/19/2015] [Accepted: 12/24/2015] [Indexed: 11/15/2022]
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Nogué S, Miró O, Aguilar R. Antídotos y servicios de urgencias. An Pediatr (Barc) 2015; 82:e260-1. [DOI: 10.1016/j.anpedi.2014.11.004] [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] [Received: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 11/30/2022] Open
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12
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Sanz-Viedma S, Moya Espinosa P, Martínez López P, Martínez del Valle M, Aguilar R, Jiménez-Hoyuela J. Neumonía por aspiración diagnosticada mediante gammagrafía SPECT/TAC de tránsito esofágico. Rev Esp Med Nucl Imagen Mol 2015; 34:75-6. [DOI: 10.1016/j.remn.2014.03.011] [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] [Received: 01/20/2014] [Revised: 03/28/2014] [Accepted: 03/28/2014] [Indexed: 11/27/2022]
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Sanz-Viedma S, Moya Espinosa P, Martínez López P, Martínez del Valle M, Aguilar R, Jiménez-Hoyuela J. Aspiration pneumonia diagnosed by esophageal transit SPECT/CT scintigraphy. Rev Esp Med Nucl Imagen Mol 2015. [DOI: 10.1016/j.remnie.2014.07.001] [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: 10/24/2022]
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14
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Affiliation(s)
- F. A. Rivera-Ortíz
- Centro de Investigaciones en Ecosistemas; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
- Escuela Nacional de Estudios Superiores (ENES) Unidad Morelia; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
| | - R. Aguilar
- Instituto Multidisciplinario de Biología Vegetal; Universidad Nacional de Córdoba CONICET; Córdoba Argentina
| | - M. D. C. Arizmendi
- Facultad de Estudios Superiores Iztacala; Universidad Nacional Autónoma de México (UNAM); Tlalnepantla Estado de México México
| | - M. Quesada
- Centro de Investigaciones en Ecosistemas; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
- Escuela Nacional de Estudios Superiores (ENES) Unidad Morelia; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
| | - K. Oyama
- Centro de Investigaciones en Ecosistemas; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
- Escuela Nacional de Estudios Superiores (ENES) Unidad Morelia; Universidad Nacional Autónoma de México (UNAM); Morelia Michoacán México
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Luna-Jorquera G, Wilson RP, Culik BM, Aguilar R, Guerra C. Observations on the thermal conductance of Adélie (Pygoscelis adeliae) and Humboldt (Spheniscus humboldti) penguins. Polar Biol 2014. [DOI: 10.1007/s003000050106] [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] [Indexed: 10/28/2022]
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16
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Perez F, Huguet J, Aguilar R, Lara L, Larrabide I, Villa-Uriol MC, López J, Macho JM, Rigo A, Rosselló J, Vera S, Vivas E, Fernàndez J, Arbona A, Frangi AF, Herrero Jover J, González Ballester MA. RADStation3G: a platform for cardiovascular image analysis integrating PACS, 3D+t visualization and grid computing. Comput Methods Programs Biomed 2013; 110:399-410. [PMID: 23357405 DOI: 10.1016/j.cmpb.2012.12.002] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 08/27/2012] [Accepted: 12/11/2012] [Indexed: 06/01/2023]
Abstract
RADStation3G is a software platform for cardiovascular image analysis and surgery planning. It provides image visualization and management in 2D, 3D and 3D+t; data storage (images or operational results) in a PACS (using DICOM); and exploitation of patients' data such as images and pathologies. Further, it provides support for computationally expensive processes with grid technology. In this article we first introduce the platform and present a comparison with existing systems, according to the platform's modules (for cardiology, angiology, PACS archived enriched searching and grid computing), and then RADStation3G is described in detail.
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Affiliation(s)
- F Perez
- Alma IT Systems, Barcelona, Spain.
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Sebastià C, Evangelista A, Quiroga S, Cuellar H, Aguilar R, Muntanyà X. Predictive value of small ulcers in the evolution of acute type B intramural hematoma. Eur J Radiol 2012; 81:1569-74. [DOI: 10.1016/j.ejrad.2011.04.055] [Citation(s) in RCA: 12] [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] [Received: 02/21/2011] [Accepted: 04/21/2011] [Indexed: 11/26/2022]
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18
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De La Torre CA, Hernández F, Sanabria P, Vázquez J, Miguel M, Luis AL, Barrena S, Aguilar R, Ramírez M, Hernández S, Borches D, Lassaletta L, Tovar JA. [Noninvasive positive pressure ventilation in postoperative period of tracheal surgery]. Cir Pediatr 2011; 24:75-78. [PMID: 22097652] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES Reconstructive surgery of the airway often means prolonged periods of intubation during the post-operatory period, increasing the needs for drugs and favoring the appearance of infectious complications. We present an original system of ventilatory support with non-invasive positive pressure ventilation (NIPPV) using in patients subjected to reconstructive surgery of the airway. PATIENTS AND METHODS A retrospective study in patients undergoing reconstructive procedures of the airway in the year 2009 was carried out. We exclude those treated endoscopically and those who had vascular rings. The positive pressure mechanism used in the Surgery Critical Care Unit was a design made by the unit based on the circuit devised by Mapleson that provides optimum levels of ventilation without need for connection to a respiratory. We analyze the results, postoperatory intubation time, time dependent on NIPPV and medical treatment received. RESULTS A total of 7 patients (1 Female and 6 Males) with median age of 1.6 (0.1-7.5) years were included. The diagnoses were: 4 subglottic stenosis, 2 had tracheal stenosis and 1 subcarinal stenosis with involvement of both principal bronchioles. The techniques used were: laryngotracheoplasty with costal cartilage graft (4), tracheoplasty with costal cartilage (1) and sliding tracheoplasty (2) with bilateral bronchoplasty in one of them. The mean time of nasotracheal intubation was 3 days, and mean time of NIPPV was 2.3. No patient required reintubation and none had infectious complications. CONCLUSIONS Ventilatory support by VPPNI allows effective extubation in these patients, it being possible to maintain a safe airway. Infectious complications, frequent in prolonged intubations, were not observed in any of the cases.
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Affiliation(s)
- C A De La Torre
- Departamento de Cirugía Pediátrica, Hospital Universitario La Paz, Madrid.
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Aguilar R, Muñoz V, González E, Noda M, Bruno A, Moreno L. Fuzzy and MultiAgent Instructional Planner for an Intelligent Tutorial System. Appl Soft Comput 2011. [DOI: 10.1016/j.asoc.2010.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Evangelista A, Aguilar R, Cuellar H, Thomas M, Laynez A, Rodriguez-Palomares J, Mahia P, Gonzalez-Alujas T, Garcia-Dorado D. Usefulness of real-time three-dimensional transoesophageal echocardiography in the assessment of chronic aortic dissection. European Journal of Echocardiography 2011; 12:272-7. [DOI: 10.1093/ejechocard/jeq191] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Linares N, Guil-Luna S, Millán Y, Aguilar R, García-Monterde J, Martín de las Mulas J. Oestrogen Receptor Modulators in the Treatment of Smooth Muscle Tumours of the Genital Tract of the Bitch: The Model of the Ovariectomized Rat. J Comp Pathol 2010. [DOI: 10.1016/j.jcpa.2010.09.105] [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: 11/29/2022]
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Gordon A, Aguilar R, Garrido-Gracia JC, Bellido C, Millán Y, Guil-Luna S, García-Velasco JA, Bellido-Muñoz E, de las Mulas JM, Sánchez-Criado JE. Human follicular fluid from superovulated women inhibits progesterone receptor-dependent gonadotropin-releasing hormone self-priming in an estrous cycle-dependent manner in the rat. J Endocrinol Invest 2010; 33:564-70. [PMID: 20479571 DOI: 10.1007/bf03346649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/25/2022]
Abstract
These experiments investigated the involvement of gonadotrope progesterone receptor (PR) in the effects of the putative gonadotropin surge-attenuating factor (GnSAF) on gonadotropin (LH and FSH) secretion. Human follicular fluids (hFF) used in this study were aspirated from follicles in gonadotropin-treated women for in vitro fertilization. Samples were subjected to two-fold charcoal extraction of steroid hormones and two-fold inhibin immunoprecipitation. Gonadotropin secretion parameters were assessed by specific radioimmunoassays. In the first experiment, the effects of hFF on both basal and GnRH-stimulated gonadotropin secretion and GnRH self-priming were studied in incubated hemipituitaries from rats on each day of the 4-day estrous cycle. hFF inhibited only GnRH self-priming in pituitaries from rats in diestrus. In the second experiment, immunohistochemical PR expression and action were evaluated in pituitaries from rats in diestrus. PR-positive (PR10A9 antibody) gonadotropes were detected (4-5/field 40x), and antiprogestins added to the incubation media blocked the ligand-independent (GnRH) activation of PR effects on GnRH selfpriming. Finally, the third experiment evaluated the effects of hFF on P-induced potentiation of GnRH-stimulated LH secretion. GnSAF bioactivity, as evidenced by inhibition of PR-induced potentiation of GnRH-stimulated LH secretion, was found in diestrous pituitaries incubated with hFF. The results indicate that GnSAF attenuated GnRH-dependent LH secretion in diestrus through the inhibition of PR-dependent GnRH self-priming.
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Affiliation(s)
- A Gordon
- Department of Cell Biology, Physiology and Immunology, University of Córdoba, Córdoba, Spain
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De La Torre CA, Miguel M, Martínez L, Aguilar R, Barrena S, Lassaletta L, Tovar JA. [The risk of necrotizing enterocolitis in newborns with congenital heart disease. a single institution-cohort study]. Cir Pediatr 2010; 23:103-106. [PMID: 21298920] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND/AIM Necrotizing enterocolitis (NEC) is the most common gastrointestinal surgical disease among neonates. Congenital heart disease (CHD) is also a significant cause of infant morbidity and mortality and it is usually associated with prematurity, low birth weight, pulmonary and gastrointestinal disease, conditions that also account for the development of NEC. Our aim is to analyze the incidence and the risk factors for NEC in neonates with CDH admitted to the Neonatal Intensive Care Unit (NICU) in a 6 years period. METHODS All patients admitted in the NICU for any type of CDH from January 2003 to December 2008 comprised the cohort of this study. The primary outcome measure was the development of NEC in any stage. Sixteen independent variables were selected to include those factors previously correlated with NEC. Uni and multivariate statistical analysis were performed with SPSS 15.0 for Windows. Relative Risks (RR) are presented with 95% confidence intervals. RESULTS 935 out of the 7803 neonates admitted during this period, 935 (11.9%) presented a CHD. Among them, 70 also had NEC (RR 8.4-17.8), 31 requiring surgical treatment (Bell stages III and IV). The risk for NEC was specially increased if CHD needed surgical correction (2.1-5.1) and among babies with very low birth weight (VLBW, <1,500 g) (2-4.8). After multivariate analysis the only independent variables associated with an increased risk of NEC were birth weight less than 1,500 g (2.2-7.4), the need of surgical correction of CHD (2.2-7.1) and a clinical picture of septicaemia (1.1-3.9). CONCLUSIONS The incidence of NEC is greater in neonates with CDH than in the normal newborn population. Early recognition of NEC should be warranted among CHD patients, specially in those with VLBW, surgical treatment of CHD and sepsis. In this sub-cohort of patients an increased risk of NEC should be suspected.
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Affiliation(s)
- C A De La Torre
- Departamento de Cirugía Pediátrica, Hospital Universitario La Paz, Madrid.
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Barrena S, Aguilar R, Olivares P, Lobato R, López Pereira P, Martínez Urrutia MJ, Jaureguizar E. [Laparoscopic resection of the prostatic utricle in children]. Cir Pediatr 2010; 23:15-18. [PMID: 20578571] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
INTRODUCTION The prostatic utricle is an embryological remnant from Müllerian duct tissue. Most prostatic utricles are asympomatic, but they may manifest as a urinary tract infection or an incontinence. MATERIAL AND METHOD Surgery consists in a cysto-urethroscopy and cannulation of the prostatic utricle with a ureteral catheter (Fogarty ner 4) and the cystoscopy left in situ to facilitate identification and mobilization. A 10 mm port through a umbilical incision and two more 5 mm working ports were inserted. After mobilization, the ureteral defect was closed by an absorbable suture and ultrasonic coagulation. RESULTS Five boys with symptomatic prostatic utricles underwent surgery at a mean (range) age of 7 (2-11) years. The laparoscopic excision was successful in all but one due to a bleeding. The mean (range) operative duration was 165 (120-240) min. CONCLUSION Laparoscopic excision under cystoscopic guidance offers a good surgical view and allowing easy dissection.
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Affiliation(s)
- S Barrena
- Unidad de Urología Pediátrica, Hospital Universitario La Paz, Madrid.
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Evangelista A, Avegliano G, Aguilar R, Cuellar H, Igual A, Gonzalez-Alujas T, Rodriguez-Palomares J, Mahia P, Garcia-Dorado D. Impact of contrast-enhanced echocardiography on the diagnostic algorithm of acute aortic dissection. Eur Heart J 2009; 31:472-9. [DOI: 10.1093/eurheartj/ehp505] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Habib G, Hoen B, Tornos P, Thuny F, Prendergast B, Vilacosta I, Moreillon P, de Jesus Antunes M, Thilen U, Lekakis J, Lengyel M, Müller L, Naber CK, Nihoyannopoulos P, Moritz A, Zamorano JL, Vahanian A, Auricchio A, Bax J, Ceconi C, Dean V, Filippatos G, Funck-Brentano C, Hobbs R, Kearney P, McDonagh T, McGregor K, Popescu BA, Reiner Z, Sechtem U, Sirnes PA, Tendera M, Vardas P, Widimsky P, Vahanian A, Aguilar R, Bongiorni MG, Borger M, Butchart E, Danchin N, Delahaye F, Erbel R, Franzen D, Gould K, Hall R, Hassager C, Kjeldsen K, McManus R, Miro JM, Mokracek A, Rosenhek R, San Roman Calvar JA, Seferovic P, Selton-Suty C, Uva MS, Trinchero R, van Camp G. Guidelines on the prevention, diagnosis, and treatment of infective endocarditis (new version 2009): the Task Force on the Prevention, Diagnosis, and Treatment of Infective Endocarditis of the European Society of Cardiology (ESC). Endorsed by the European Society of Clinical Microbiology and Infectious Diseases (ESCMID) and the International Society of Chemotherapy (ISC) for Infection and Cancer. Eur Heart J 2009; 30:2369-413. [PMID: 19713420 DOI: 10.1093/eurheartj/ehp285] [Citation(s) in RCA: 1213] [Impact Index Per Article: 80.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Gilbert Habib
- Service de Cardiologie, CHU La Timone, Bd Jean Moulin, 13005 Marseille, France.
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Gordon A, Aguilar R, Garrido-Gracia JC, Guil-Luna S, Sanchez-Cespedes R, Millan Y, Martin de las Mulas J, Sanchez-Criado JE. Activation of estrogen receptor- induces gonadotroph progesterone receptor expression and action differently in young and middle-aged ovariectomized rats. Hum Reprod 2009; 24:2618-28. [DOI: 10.1093/humrep/dep237] [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: 11/13/2022] Open
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Gaytan F, Bellido C, Aguilar R, Aguilar E. Balano-Preputial Separation as an External Sign of Puberty in the Rat: Correlation with Histologic Testicular Data/Balano-praeputial-Trennung als ein äußeres Zeichen der Pubertät für die Ratte: Korrelation mit histologischen Daten. Andrologia 2009. [DOI: 10.1111/j.1439-0272.1988.tb00724.x] [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: 11/30/2022] Open
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Arévalo F, Aguilar R, Ramos C, Arias J, Castillo S, Monge E. [Inflamatory polyps of the colon an evaluation]. Rev Gastroenterol Peru 2009; 29:40-43. [PMID: 19424407] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM We report our experience with Inflammatory Polyps of the Colon. METHODS Retrospective study including all polyps diagnosed at the Arias Stella Pathology Institute, Lima in the year 2008. Inflammatory polyps were diagnosed as polyp composed of reactive epithelium without dysplasia, inflamed granulation tissue. RESULTS We found 887 polyps of which 2.3% were inflammatory polyps. One out of three were located in the sigmoid colon, and 63% had no underlying colonic disease. CONCLUSION Inflammatory polyps are rare among colonic polyps and most patients have no accompanying colonic disease.
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Affiliation(s)
- F Arévalo
- Medico anatomo patologo "Instituto Anatomia y Biologia Molecular Arias Stella", Peru.
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Barrena S, Avila LF, Aguilar R, Andrés AM, Burgos L, Suárez O, Luis AL, Soto C, Elorza D, Martínez L, Lassaletta L, Tovar JA. [Morbility and mortality associated with prosthetic patch in congenital diaphragmatic hernia]. Cir Pediatr 2008; 21:157-161. [PMID: 18756870] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM To analyze morbility, mortality and neonatal intensive care management in CDH patients who required a prosthetic patch to close the diaphragmatic defects, and to compare these results with those who were made a primary closure. MATERIAL AND METHODS We reviewed the clinical charts of CDH patients managed at our institution between January 1994 and December 2006, including demographic data, clinical management, treatment options, complications and mortality. Appropriate statistical tests were used to evaluate the data: mortality, need of high frequency oscillatory ventilation (HFOV), days of intubation, days of total parenteral nutrition (TPN), days of admission, reherniation, need of Nissen funduplication and intestinal obstruction; a p value less than 0.05 was considered statistically significant. RESULTS Eighty-seven CDH patients were reviewed, 68 right, 17 left and 2 bilateral defects. Seventeen died before surgery (19.5%). Among the 70 operated patients, 21 (24.1%) required a prosthetic patch, 18 in the left and 3 in the right side. Overall mortality, need of HFOV, intubation days, need of TPN, days of admission, reherniation rate and need of Nissen funduplication were all significantly worse in the group who required a patch. Rate of intestinal obstruction was similar in both groups. CONCLUSIONS Patients who required a prosthetic patch to close the diaphragmatic defect suffered from higher morbidity and presented a higher mortality than those who did not required the patch.
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Affiliation(s)
- S Barrena
- Departamento de Cirugía Pediátrica, Hospital Universitario la Paz, Madrid.
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Aguilar R, Soto C, Barrena S, Díaz M, López JC, Ros Z, Tovar J. [A satisfaction survey of the evolution of 238 otoplasty]. Cir Pediatr 2008; 21:104-106. [PMID: 18624280] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
PURPOSE The prominent ear is a frequent problem that can be a source of important psychosocial troubles. The aim of this paper has been to evaluate the psychosocial repercussion, cosmetic result and degree of satisfaction in patients treated at our Institution for prominent ears in the last 4 years. MATERIAL AND METHODS A questionnaire has been sent to 127 patients. All of them underwent Mustarde's otoplasty. RESULTS 238 otoplasty were performed in 127 patients (87% bilateral procedures). The mean age was 8.15 +/- 3.25 years (range: 1-15 years), with a follow-up of 27.15 +/- 13.62 months (range: 4-52 months). Sixty-two % of the patients underwent otoplasty without having self-image affected while 38% of the group were patients older enough to see surgery to correct a long-standing defect. Patients did not require a period of postoperative psychosocial adjustment to their new appearance. Two patients described their results of surgery as little improvement. Three undergo partial recurrence and 5 suffered from total recurrence. All of the patients resume their lives with an improved level of self confidence. Conclusions. Otoplasty is a safe procedure for prominent ears to be considered in children with psycosocial, emotional or behavioural effects.
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Affiliation(s)
- R Aguilar
- Departamento de Cirugía Pediátrica, Hospital Infantil La Paz, Madrid.
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Aguilar R, Andrés A, Barrena S, Burgos L, Suárez O, Lassaletta L, Tovar J. [Reoperations in gastroesophageal reflux disease]. Cir Pediatr 2008; 21:92-95. [PMID: 18624277] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
PURPOSE The purpose was to determinate the indications in which the failure of the surgical treatment of the gastroesophageal reflux disease (GERD) is more frequent and to analyze the results of the reinterventions. PATIENTS AND METHOD We made a restrospective review of the patients who underwent reoperation at our Institution during 1992-2006. RESULTS 19 of 252 Nissen underwent reoperation. In one case was the fourth fundoplication, in another was the third and the second in the rest of them. The reflux was confirmed by upper gastrointestinal contrast study, endoscopy, pH monitoring and, in some cases, manometry. 5 cases have surgical comorbidity (3 Esophageal Atresia (EA), 2 Congenital diaphragmatic hernia (CDH), 4 patients was neurologically impaired, 1 had caustic stenosis (CS), and 9 only symptoms of GERD. 8.7% of the patients with GERD, 5.8% of the neurologically impaired children, 10% of the EA, 20% of the CDH and 50% of the CS underwent redo Nissen. The mean time between first and second fundoplication was 1.6 years (range = 1 m-5.5 y). It was 11.2 in neurologically impaired patients, 5 m in CS, 11.5 m in CDH, 2.4 y in EA and 2.8 y in the rest. In patients with respiratory disease, the mean was 1.1 y and 1.9 y in the rest. The mechanism of failure was herniation of the fundoplication through the hiatus in 8 cases, wrap incompetence in 4 and wrap dehiscence in 2. In 5 patients it couldn't be determined. There were 2 postoperative complications. The mean follow-up was 5.3 years (range = 6-151.5 m). There was no cases of mortality. 17 of the 19 patients (89.4%) are free of symptoms and don't need more treatments. The child with CS continuous periodic esophageal dilatations and 1 of the patients with EA has dysphagia to solid foods.
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Affiliation(s)
- R Aguilar
- Departamento de Cirugía Pediátrica, Hospital Infantil La Paz, Madrid.
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Garc Iacute A G, Heras J, Aguilar R. [Enfermedad de Creutzfeldt-Jacob: hiperseñal cortical y en ganglios basales en la resonancia magnética.]. Neurologia 2008:200810903326. [PMID: 18307059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
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Evangelista A, Flachskampf F, Lancellotti P, Badano L, Aguilar R, Monaghan M, Zamorano J, Nihoyannopoulos P. European Association of Echocardiography recommendations for standardization of performance, digital storage and reporting of echocardiographic studies. European Journal of Echocardiography 2008; 9:438-48. [DOI: 10.1093/ejechocard/jen174] [Citation(s) in RCA: 265] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Ojeda Burgos G, Cuenca A, de la Cruz Cosme C, Pérez E, Vicioso L, Aguilar R, Rivas E. Síndrome confusional en paciente con hiponatremia severa. Rev Clin Esp 2008; 208:49-51. [DOI: 10.1157/13115008] [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]
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Suárez O, López-Gutiérrez JC, Burgos L, Aguilar R, Luis A, Encinas JL, Soto-Bauregard C, Díaz M, Ros Z. [Surgical treatment in severe dog bites injures in pediatric children]. Cir Pediatr 2007; 20:148-150. [PMID: 18018741] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
INTRODUCTION We report a retrospective study of dog-bitten-children who underwent surgical treatment in our department between 1995 and 2005. We checked the different surgical techniques used to cover the defect as well as short and long-term functional and aesthetic results, considering also infection and hospital stay. MATERIALS AND METHODS During this period of time, 21 patients received surgical treatment because of dogs bites. Surgical approach was decided considering location and severity of lessions. RESULTS Our serie consists of 12 males and 9 females. Head (71%) and extremities (23%) were the most frequent affected areas. Primary closure was carried out in 18 cases and in the remaining 3 artificial skin or tissue flaps were needed; in these 3 cases the resulting scar was later removed. Surgical infection occurred in less than 10% of the children and in all cases, long-term aesthetic results were considered excellent. CONCLUSIONS Primary closure of dog-bites-injures improves functional and aesthetic results and reduces the surgical procedures in those patients.
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Affiliation(s)
- O Suárez
- Servicio de Cirugía Plástica, Departamento de Cirugía Pediátrica, Hospital Universitario La Paz, Madrid.
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Wilson SC, Holder HW, Martin JM, Brasel TL, Andriychuk LA, Wu C, Straus DC, Aguilar R. An indoor air quality study of an alligator (Alligator mississippiensis) holding facility. J Zoo Wildl Med 2007; 37:108-15. [PMID: 17312787 DOI: 10.1638/05-030.1] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An environmental microbiologic investigation was conducted in an alligator (Alligator mississippiensis) holding facility in a zoo in the southeastern U.S. The facility had housed five alligators between March 1999 and February 2005. In the exhibit, one alligator died and all experienced poor health. It was hypothesized that environmental microbial contamination was associated with these issues. Samples were collected for fungal identification and quantification, microcystin analysis, and airborne mycotoxins. Analyses of air and water were conducted and an examination of the heating, ventilation, and air-conditioning system (HVAC) for design, maintenance, and operating issues was made. Two control sites, a facility for false gharials (Tomistoma schlegelii) and an off-site alligator breeding facility, were also tested. Morbidity and mortality records were examined for all sites. Results showed that, compared to the control sites, the test alligator facility and its HVAC system were extensively contaminated with a range of fungi. Nearly all sampled surfaces featured fungal growth. There were also significantly higher counts of Penicillium/Aspergillus-like and Chrysosporium-like spores in the air (P < 0.004). The design, maintenance, and operation of the HVAC system were all inadequate, resulting in poorly conditioned and mold-contaminated air being introduced to the facility. Morbidity records revealed solitary pulmonary disorders over time in three alligators, with one dying as a result. The other two alligators suffered from general malaise and a range of nonspecific symptoms. The control facilities had no morbidity or mortality issues. In conclusion, although no causal links could be demonstrated because of the nature of the morbidity data, environmental mold contamination appeared to be associated with the history of morbidity and mortality in the alligator exhibit.
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Affiliation(s)
- S C Wilson
- Center for Indoor Air Research, Department of Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, Texas 79430, USA
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Aguilar R, Bellido C, Garrido-Gracia JC, Alonso R, Sánchez-Criado JE. Estradiol and its membrane-impermeable conjugate estradiol-BSA inhibit tamoxifen-stimulated prolactin secretion in incubated rat pituitaries. Reproduction 2006; 131:763-9. [PMID: 16595727 DOI: 10.1530/rep.1.00807] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/08/2022]
Abstract
In the absence of estrogen (E), the selective E receptor modulator tamoxifen (TX) has two agonist effects in the rat pituitary: induction of progesterone receptor (PR)-dependent GnRH self-priming in the gonadotrope, and stimulation of prolactin (PRL) secretion in the lactotrope. TX-induced gonadotropin (GnRH) self-priming is absent when 10(-8) M estradiol-17beta (E2) is added to the incubation medium of pituitaries from TX-treated rats. The present experiments investigated whether PR-independent PRL release into the incubation medium of pituitaries from TX-treated ovariectomized (OVX) rats was affected by E2, and the effect of different ER ligands (ICI182780, TX, estradiol-17alpha, E2 -BSA) on TX-stimulated PRL secretion. Moreover, the effect of E2 on TRH-stimulated PRL secretion in pituitaries collected from estradiol benzoate- and TX-treated OVX rats was studied. It was found that: i) incubation with E2 supressed the PRL releasing effect of injected TX; ii) whereas coincubation with the pure anti-E type II ICI182780 antagonized the inhibitory effect of E2, coincubation with the anti-E type I TX did not; iii) estradiol-17alpha lacked inhibitory action, whereas a dose-dependent inhibitory effect of both E2 and E2 -BSA was noticed; and iv) TRH stimulatory effect on PRL release in pituitaries from TX-treated rats was blocked by addition of E2 to the medium. Taken together, these data argue in favor of the presence of specific membrane recognition sites for E in the lactotrope involved in steroid-specific E2 inhibition of TX-stimulated PRL secretion.
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Affiliation(s)
- R Aguilar
- Department of Cellular Biology, Physiology and Immunology, University of Córdoba Avda, Menendez Pidal s/n, 14004 Córdoba, Spain
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Garrido-Gracia JC, Bellido C, Aguilar R, Sánchez-Criado JE. Protein kinase C cross-talk with gonadotrope progesterone receptor is involved in GnRH-induced LH secretion. J Physiol Biochem 2006; 62:35-42. [PMID: 16909930 DOI: 10.1007/bf03165804] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/25/2022]
Abstract
In the absence of progesterone (P), the anti-P at the receptor RU486 reduces basal and GnRH-stimulated LH secretion both in vivo and in vitro, demonstrating the existence of a ligand-independent activation of progesterone receptor (LIAPR). The aim of the present study was to determine which component of the intracellular LH secretory pathway activated by GnRH is responsible for LIAPR. To do this, anterior pituitary dispersed cells from female rats in proestrus, cultured in the presence of 17beta-estradiol, were incubated with activators or inhibitors of PKC, cAMP-PKA signalling pathways or intracellular calcium (Ca2+) traffic, in the presence or absence of RU486. Results showed that RU486 reduced both GnRH- and the PKC activator PMA-induced LH secretion. In GnRH-stimulated cells incubated with the PKC inhibitor BIS-I or treated with PMA "overnight", RU486 had no effect on reduced LH secretion, nor on stimulated LH secretion elicited by the Ca2+ ionophore ionomycin. Moreover, when GnRH- or PMA-treated cells were co-incubated with 1 microM of the L-type Ca2+ channel blocker nifedipine or the intracellular Ca2+ chelator BAPTA-AM, RU486 potentiated the expected inhibition of these drugs on LH secretion. Activation (forskolin, 8-Br-cAMP) or inhibition (MDL-12,330A) of the cAMP-PKA signalling cascade affected neither the GnRH- and PMA-induced increase of LH secretion nor the reduction of LH secretion due to RU486. Taken together, the data point to the existence of a Ca2+ -independent PKC-PR cross-talk mechanism as part of the intracellular signalling of GnRH-stimulated LH secretion.
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Affiliation(s)
- J C Garrido-Gracia
- Department of Cell Biology, Physiology and Immunology, University of Córdoba, Avda. Menéndez Pidal s/n, 14004 Córdoba, Spain.
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Fernández-Teruel A, Blázquez G, Pérez M, Aguilar R, Cañete T, Guitart M, Giménez-Llort L, Tobeña A. [Latent inhibition threshold in Roman high-avoidance rats: a psychogenetic model of abnormalities in attentional filter?]. Actas Esp Psiquiatr 2006; 34:257-63. [PMID: 16823687] [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] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
INTRODUCTION Basic research devoted to the study of the psychobiological anomalies of schizophrenia, as well as of its treatments, has used animal models in which some psychotic-like symptoms are induced by administration of psychostimulant drugs. There is, however, a growing necessity of having animal models presenting better construct validity, i.e., animal lines spontaneously showing phenotypes associated to the psychotic spectrum (for instance, enhanced sensitivity to psychostimulants, or cognitive and attentional anomalies characteristic of schizophrenic disorders). Several lines of evidence suggest that the RHA (Roman high-avoidance) rat strain presents a neurobehavioral profile which is consistent with such goals. METHODS RHA rats were compared to Sprague-Dawley (SD) rats (as a standard control strain) for the expression of latent inhibition (in a 100-trial session of two-way active avoidance) under threshold conditions (i.e., only 15 preexposures to the conditioned stimulus were administered). RESULTS Under such experimental conditions SD rats showed significant latent inhibition of the two-way active avoidance response (both during the first 50 trials and in the whole 100-trial session), while that attentional phenomenon did not appear in the RHA strain. CONCLUSIONS The experimental results obtained here indicate that RHA rats display a deficit of latent inhibition at threshold conditions, an information processing (or attentional) anomaly which typically appears in schizophrenic patients. It is proposed that RHA rats might be an useful animal model for the study of vulnerability to some schizophrenic symptoms. This conclusion is supported by data that indicate that latent inhibition deficits are a characteristic attentional abnormality of these diseases.
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Affiliation(s)
- A Fernández-Teruel
- Unidad de Psicología Médica, Departamento de Psiquiatría y Medicina Legal, Instituto de Neurociencias, Facultad de Medicina, Universidad Autónoma de Barcelona, Bellaterra (Barcelona).
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Sánchez-Criado JE, de Las Mulas JM, Bellido C, Navarro VM, Aguilar R, Garrido-Gracia JC, Malagón MM, Tena-Sempere M, Blanco A. Gonadotropin-secreting cells in ovariectomized rats treated with different oestrogen receptor ligands: a modulatory role for ERbeta in the gonadotrope? J Endocrinol 2006; 188:167-77. [PMID: 16461544 DOI: 10.1677/joe.1.06377] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [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: 11/27/2022]
Abstract
In the rat, oestrogen is a key regulator of gonadotrophin synthesis and release through activation of oestrogen receptors (ERs). Gonadotropes express alpha and beta isoforms of ER and both can activate transcription in response to oestrogen. These experiments were aimed at evaluating the relative contribution of ERalpha and ERbeta on gonadotrope morphology, progesterone receptor (PR) expression and LH secretion. Ovariectomized rats were daily injected over 3 days with 25 microg oestradiol benzoate, 0.3 or 1.5 mg of the selective ERalpha agonist propylpyrazole triol (PPT) with or without 1.5, 3.0 or 4.5 mg of the selective ERbeta agonist diarylpropionitrile (DPN), DPN alone, and 0.3 or 3 mg of tamoxifen. Controls were given 0.2 ml oil. Serum concentration and pituitary content of LH, gonadotrope PR expression, pituitary PR content, and gonadotrope morphology were analyzed by RIA, immunohistochemistry, Western blotting and light and electron microscopy, respectively. Results showed that PPT reversed all consequences of ovariectomy, DPN mimicked the effects of PPT except for its LH-releasing action and tamoxifen had ERalpha-like responses. When combined with PPT, DPN attenuated ERalpha effects without interfering with its LH-releasing activity. Oestradiol benzoate had similar effects to those of combined PPT and DPN. It is suggested that (i) the structural reorganization of the cytoplasmic organelles provided by oestrogen, and the shrinkage of the ovariectomy-induced hypertrophy of gonadotropes, which precedes the expression of PR, are evoked by ERalpha and modulated, in a ying-yang fashion, by ERbeta; and (ii) the oestrogen-dependent exocytosis of LH, the final step in the secretory process, is dependent on ERalpha exclusively.
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Affiliation(s)
- J E Sánchez-Criado
- Department of Cell Biology, Physiology and Immunology, University of Córdoba, Spain.
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Estévez J, Alayón S, Moreno L, Sigut J, Aguilar R. Cytological image analysis with a genetic fuzzy finite state machine. Comput Methods Programs Biomed 2005; 80 Suppl 1:S3-S15. [PMID: 16520142 DOI: 10.1016/s0169-2607(05)80002-1] [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] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The objective of this research is to design a pattern recognition system based on a Fuzzy Finite State Machine (FFSM). We try to find an optimal FFSM with Genetic Algorithms (GA). In order to validate this system, the classifier has been applied to a real problem: distinction between normal and abnormal cells in cytological breast fine needle aspirate images and cytological peritoneal fluid images. The characteristic used in the discrimination between normal and abnormal cells is a texture measurement of the chromatin distribution in cellular nuclei. Furthermore, the effectiveness of this method as a pattern classifier is compared with other existing supervised and unsupervised methods and evaluated with Receiver Operating Curves (ROC) methodology.
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Affiliation(s)
- J Estévez
- Departamento de Física Fundamental y Experimental, Electrónica y Sistemas, University of La Laguna, Tenerife, Spain.
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Abstract
Gray gulls, Larus modestus, nest 1500 m above sea level in northern Chile's Atacama Desert, one of the driest in the world. Their eggshell gas permeability, one third of that found in other Larus species, is an adaptation that reduces water loss, but at the expense of oxygen diffusion into the air cell with resultant hypoxia and reduced metabolic rate. This contrasts with characteristics found in birds nesting at very high altitudes where oxygen diffusion across the egg shell is maximized at the expense of water conservation. The oxygen consumption (MO2) of Larus modestus is 66% that of Larus argentatus; the oxygen conductance (GO2) is equivalent to 48% of that obtained in 5 other bird species. The oxygen partial pressure (PAO2) in the air chamber of Larus modestus (84 Torr) is lower than that of 10 other bird species whose average (PAO2) is 106 Torr. The CO2 partial pressure (PACO2) in the air chamber of Larus modestus is 68 Torr, a higher value than that found in 9 other bird species whose average (PACO2) is 39 Torr.
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Affiliation(s)
- C C Monge
- Departamento de Transporte de Oxígeno, Universidad Peruana Cayetano Heredia, Lima, Perú
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Aguilar R, Garay J, Villatoro M, Ramirez M, Villatoro F, Abarca H, Caminero JA. Results of a national study on anti-mycobacterial drug resistance in El Salvador. Int J Tuberc Lung Dis 2005; 9:514-20. [PMID: 15875922] [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: 05/02/2023] Open
Abstract
SETTING The DOTS strategy was introduced in El Salvador in 1997 and had become fully implemented countrywide by 2001. Previously, many deficiencies were identified in the management of patients with tuberculosis (TB). OBJECTIVE To ascertain the prevalence of Mycobacterium tuberculosis resistant to first-line drugs. DESIGN A national prospective survey was carried out in 2001 using the standardised World Health Organization/ International Union Against Tuberculosis and Lung Disease model. RESULTS A total of 711 cultures were analysed (59% of total smear-positive cases); 611 were never treated and 100 were previously treated patients. The study showed resistance rates to isoniazid and rifampicin, either alone or combined (multidrug resistance, MDR), of 1.3%, 1.1% and 0.3%, respectively, in never treated patients, and 12%, 13% and 7%, respectively, in previously treated patients. CONCLUSION The low rates of MDR-TB in El Salvador are puzzling, as out-patient DOTS was introduced only recently and fixed-dose combination tablets have not been used.
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Affiliation(s)
- R Aguilar
- Department of Pulmonary Medicine, Hospital Rosales, San Salvador
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Sánchez-Criado JE, de Las Mulas JM, Bellido C, Aguilar R, Garrido-Gracia JC. Gonadotrope oestrogen receptor-alpha and -beta and progesterone receptor immunoreactivity after ovariectomy and exposure to oestradiol benzoate, tamoxifen or raloxifene in the rat: correlation with LH secretion. J Endocrinol 2005; 184:59-68. [PMID: 15642783 DOI: 10.1677/joe.1.05748] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The selective oestrogen receptor modulator (SERM) tamoxifen (TX) has agonist/antagonist actions on LH secretion in the rat. Whereas in the absence of oestrogens TX elicits progesterone receptor (PR)-dependent GnRH self-priming, it antagonizes oestrogen-stimulatory action on LH secretion. The aim of these experiments was to explore whether TX treatment-induced differential expression of oestrogen receptor (ER)alpha and ERbeta in the gonadotrope may determine its agonist effect on LH secretion. In the first experiment, basal LH secretion, GnRH-stimulated LH secretion and PR-dependent GnRH self-priming were determined in incubated pituitaries from ovariectomized (OVX) rats treated with oestradiol benzoate (EB), TX or raloxifene (RX). Cycling rats in metoestrus or pro-oestrus were used as basic controls. As in pro-oestrus, pituitaries from OVX rats treated with EB exhibited GnRH-stimulated LH secretion, immunohistochemical PR expression and GnRH self-priming. While RX had no effect on these parameters, TX induced PR expression and GnRH self-priming. GnRH self-priming was absent in pituitaries incubated with the antiprogestin ZK299. In the second experiment, we evaluated the immunohistochemical expression of ERalpha and ERbeta in gonadotropes of cycling rats and OVX rats treated with EB, TX or RX. We found that while ERalpha expression was similar in all six groups, ERalpha expression was oestrous cycle dependent. Moreover, ERalpha expression in gonadotropes of TX-treated rats was as high as that found in pro-oestrus, while ERalpha expression in the gonadotropes of RX-treated rats was lower than in metoestrous or pro-oestrous pituitaries. These results suggest that, in the absence of the cognate ligand, TX, unlike RX, may regulate LH secretion through the ERalpha subtype in gonadotropes.
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Aguilar R, Garay J, Villatoro M, Billo NE, Caminero JA. Impact of a model training course for private and public specialist physicians in El Salvador. Int J Tuberc Lung Dis 2004; 8:473-9. [PMID: 15141741] [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: 04/29/2023] Open
Abstract
BACKGROUND Private and non-private specialist practitioners are often considered an obstacle to the performance of the National Tuberculosis Control Programme (NTP). OBJECTIVE To evaluate the impact of an intensive refresher course directed at specialist physicians in El Salvador, a questionnaire was sent to all course participants on their basic knowledge of tuberculosis (TB) control. RESULTS Of 64 participants, 55 were assessed (86%); 33 were chest physicians and 22 belonged to other related specialities. The evaluation showed a considerable improvement in both groups in their ability to suspect the disease, in their tendency to avoid hospitalising patients and instead refer them to out-patient clinics, and in their adherence to the recommendations of the NTP manual (diagnostic procedures, treatment guidelines, case notification and cohort studies). Improvements were more noticeable, in all the parameters evaluated, among the non-chest physicians. CONCLUSION The intervention model succeeded in improving the collaboration of private and non-private specialist practitioners with the NTP.
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Affiliation(s)
- R Aguilar
- National Hospital Rosales, San Salvador, El Salvador
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Aguilar R, Dávila M, Elizalde M, Mattusch J, Wennrich R. Capability of a carbon–polyvinylchloride composite electrode for the detection of dopamine, ascorbic acid and uric acid. Electrochim Acta 2004. [DOI: 10.1016/j.electacta.2003.10.002] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.5] [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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Damasceno DC, Volpato GT, Calderon IDMP, Aguilar R, Rudge MVC. Effect of Bauhinia forficata extract in diabetic pregnant rats: maternal repercussions. Phytomedicine 2004; 11:196-201. [PMID: 15070172 DOI: 10.1078/0944-7113-00348] [Citation(s) in RCA: 28] [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] [Indexed: 05/24/2023]
Abstract
Bauhinia forficata, commonly known as "paw-of-cow", is widely used in Brazil folk medicine for the treatment of Diabetes mellitus. The purposes of present study were to determine the repercussions of diabetes on the defense system against oxidative stress in pregnant female rats and to characterize the influence of the treatment with Bauhinia forficata extract on the antioxidant system, glycemic control, hepatic glycogen, cholesterol, triglycerides, total proteins and lipids. Virgin female Wistar rats were injected with 40 mg/kg streptozotocin (STZ) before mating. Oral administration of an aqueous extract of Bauhinia forficata leaves was given to non-diabetic and diabetic pregnant rats in 3 doses: 500 mg/kg from 0 to 4th day of pregnancy, 600 mg/kg from 5th to 14th day and 1000 mg/kg from 15th to 20th day. All the females were killed on the day 21 of pregnancy. A maternal blood sample was collected by venous puncture and the maternal liver was removed for biochemical measurement. The diabetic pregnant rats presented hyperglycemia, hyperlipemia, hypertriglyceridemia, hypercholesterolemia, hyperuricemia, decreased determinations of reduced glutathione (GSH) and superoxide dismutase (SOD). Treatment with B. forficata extract did not interfere in the albumin, total protein and lipid, triglyceride, cholesterol and SOD determinations. Increased hepatic glycogen, decreased uric acid concentration and increased GSH activity was observed. This last fact suggests that the plant may have some action on antioxidant defense system. However, the demonstration of the active component present in B. forficata responsible for its antioxidant effect and the increase in hepatic glycogen deserve further investigation.
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Affiliation(s)
- D C Damasceno
- Discipline of Human Embryology, School of Medicine of Marilia, São Paulo State, Brazil.
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