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Compañ V, Tiemblo P, García F, García JM, Guzmán J, Riande E. A potentiostatic study of oxygen transport through poly(2-ethoxyethyl methacrylate-co-2,3-dihydroxypropylmethacrylate) hydrogel membranes. Biomaterials 2005; 26:3783-91. [PMID: 15626426 DOI: 10.1016/j.biomaterials.2004.09.061] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2004] [Accepted: 09/23/2004] [Indexed: 11/17/2022]
Abstract
The oxygen permeability and diffusion coefficients of hydrogel membranes prepared with copolymers of 2-ethoxyethyl methacrylate (EEMA)/2,3-dihydroxypropylmethacrylate (MAG) with mole fraction of the second monomer in the range between 0 and 0.75 are described. Values of the permeability and diffusion coefficients of oxygen are determined by using electrochemical procedures involving the measurement of the steady-state current in membranes prepared by radical polymerization of the monomers. The results obtained for the transport properties were analyzed taking into account the fractional free volumes, the cohesive energy densities and the glass transition temperatures of the hydrogels.
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Español T, Hernández M, Giner MT, Casas C, Gurbindo D, Marco T, Larramona H, García JM. [Directory of diagnostic tests in primary immunodeficiencies]. Allergol Immunopathol (Madr) 2005; 33:157-61. [PMID: 15946629 DOI: 10.1157/13075699] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The clinical and immunological characteristics that suggest diverse forms of primary immunodeficiency are discussed. Data on the hospitals that perform immunological, molecular and genetic tests for the diagnosis of most of the primary immunodeficiencies in Spain are presented.
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Alonso-Coello P, Solà I, García JM. [Values and preferences of patients: question pending]. Aten Primaria 2005; 35:379. [PMID: 15871803 PMCID: PMC7684474 DOI: 10.1157/13074300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sánchez-Quevedo MC, Ceballos G, García JM, Luna JD, Rodríguez IA, Campos A. Dentine structure and mineralization in hypocalcified amelogenesis imperfecta: a quantitative X-ray histochemical study. Oral Dis 2004; 10:94-8. [PMID: 14996279 DOI: 10.1111/j.1354-523x.2003.00988.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study was undertaken in order to establish the structural and mineralization pattern of the response of dentine to alterations in enamel in hypocalcified amelogenesis imperfecta (AI). DESIGN The images and data obtained with scanning electron microscopy and electron probe X-ray microanalysis in enamel and dentine specimens from control and affected teeth were compared in this study. PATIENTS AND METHODS We compared 46 fragments of permanent teeth from patients with clinically diagnosed hypocalcified AI and 20 normal permanent teeth. All specimens were prepared for electron probe X-ray microanalysis. RESULTS Dentine is characterized by thickening of the peritubular dentine and partial obliteration of the dentinal tubules that does not give rise to a compact sclerotic cast. In dentine, calcium levels were significantly higher in teeth with clinically hypocalcified AI in relation with control teeth (P < 0.001). CONCLUSIONS Dentine is affected in hypocalcified AI increasing mineralization (narrower tubules and higher content of calcium) in response to enamel disorder.
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Seral B, García JM, Cegoñino J, Doblaré M, Seral F. Finite element study of intramedullary osteosynthesis in the treatment of trochanteric fractures of the hip: Gamma and PFN. Injury 2004; 35:130-5. [PMID: 14736469 DOI: 10.1016/s0020-1383(03)00076-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The ongoing debate surrounding the surgical treatment of trochanteric hip fractures, particularly unstable fractures, has led to continuous changes in the design of well-established implants and to the development of new ones. The goal of this paper was to use a finite element simulation to compare the biomechanical behaviour of two intramedullary implants most often used at the University Hospital of Zaragoza: the standard Gamma nail (Howmedica) and the proximal femoral nail (PFN, Stratec). The main focus was on the displacements of the fracture focus and the stress distributions along the femur and the implant. Both nails produced an important redistribution of stress in the bone tissue, but the redistribution of peak stress was higher for the Gamma nail. On the other hand, with PFN there were smaller displacements at the fracture site. Finally, under the same workload, the Gamma nail supported higher stresses than the PFN.
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Zeman ME, García JM, Doblaré M. [Simulation through the method of finite element of alendronate in a model of bone remodeling based on damage mechanics]. ACTA CIENTIFICA VENEZOLANA 2003; 54:36-42. [PMID: 14515765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Mechanical loads are one of the main factors that affect bone remodelling process. This phenomenon is widely applied to the study of prosthetic replacement, for example hip prosthesis. Elderly people are the most common patient to receive a hip replacement surgery. Alendronate is a drug that is being used to increase bone mineral content in patients with poor bone quality. This work uses a mechanical model based on damage mechanics, which considers bone's porosity as the damage variable, a mechanical stimulus associated thermodynamically to this variable, a damage criterion and an evolution damage law. Our approach simulates the degree of mineralization changes as well as the decrease of BMU activation frequency due to Alendronate doses. The biological changes generated by the drug directly affect the damage's evolution law. As a first approach the two biological parameters to be modeled are the surface of remodelling as well as the degree of mineralization (ash fraction) of the bone. Results show a good correlation with experimental data from alendronate's treatments for short term simulations (1-2 years).
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Guillén S, Arredondo MT, Traver V, García JM, Fernández C. Multimedia telehomecare system using standard TV set. IEEE Trans Biomed Eng 2002; 49:1431-7. [PMID: 12542238 DOI: 10.1109/tbme.2002.805457] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Nowadays, there are a very large number of patients that need specific health support at home. The deployment of broadband communication networks is making feasible the provision of home care services with a proper quality of service. This paper presents a telehomecare multimedia platform that runs over integrated services digital network and internet protocol using videoconferencing standards H.320 and H.323, and standard TV set for patient interaction. This platform allows online remote monitoring: ECG, heart sound, blood pressure. Usability, affordability, and interoperability were considered for the design and development of its hardware and software components. A first evaluation of technical and usability aspects were carried forward with 52 patients of a private clinic and 10 students in the University. Results show a high rate (mean = 4.33, standard deviation--SD = 1.63 in a five-points Likert scale) in the global perception of users on the quality of images, voice, and feeling of virtual presence.
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Abstract
The purpose of this paper is to present and discuss a new model for internal bone remodelling. We state that the evolution of the internal variables of the bone microstructure and its incidence on the modification of the elastic constitutive parameters may be formulated following the exact principles of Continuum Damage Mechanics (CDM), although no actual damage is considered. A remodelling tensor, analogous to the standard damage tensor, is proposed which completely characterises the state of the homogenised bone microstructure and, therefore, its stiffness. This tensor is defined in terms of the apparent density and the "fabric tensor" associated with porosity and directionality of the trabeculae, respectively. Contrary to standard damage mechanics, its variation may be negative to allow for material "repair". The different elements that compose the theory are then established, such as the mechanical stimulus which, as is common in CDM, was chosen as the tensor that is thermodynamically associated to the remodelling one. The resorption and apposition criteria (similar to the damage criterion) were also expressed in terms of this mechanical stimulus and, finally, the evolution law, to define the change rate of the remodelling tensor. An associated flow rule is proposed that fulfils a principle of minimum mechanical dissipation for convex remodelling criteria (the case in question here). Some other important experimental features are deduced naturally from the model, such as the coincidence of the principal directions of the fabric tensor with those of the elasticity tensor, or the fact that the principal directions of the fabric tensor tend to align with the principal directions of stress. This model is applied to the study of the remodelling evolution of the proximal extremity of the femur, obtaining results very similar to experimental data.
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Pifarré R, Teixidó B, Vilá M, Duran M, García JM, Morera J. [Pulmonary nocardiosis as a cause of radiographic imaging of multiple pulmonary nodules]. Arch Bronconeumol 2001; 37:511-2. [PMID: 11734142 DOI: 10.1016/s0300-2896(01)75132-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lung nocardiosis is a rare disease affecting patients with lymphoreticular neoplasm, immunodeficiency or chronic obstructive pulmonary disease; it can also affect patients who have received transplants. We report a case of lung nocardiosis in which radiographic presentation was acute, with a pattern of multiple bilateral pulmonary nodules ("cannonballs"), requiring us to rule out metastatic disease to arrive at a diagnosis. The patient responded slowly to antibiotic treatment until full resolution.
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Palomo C, Oiarbide M, Mielgo A, González A, García JM, Landa C, Lecumberri A, Linden A. Alkylation of chiral alpha-hydroxy ketones derived from (1R)-(+)-camphor. An asymmetric variant of the classical acetylene route to carbonyl compounds. Org Lett 2001; 3:3249-52. [PMID: 11594806 DOI: 10.1021/ol0163530] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text]. The asymmetric version of the traditional route for transforming acetylene into alpha-branched carbonyl compounds is now feasible for the first time. The method involves the temporary attachment of camphor to acetylene and gives a remarkably high diastereo- and enantioselectivity.
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Cancho ME, Oliver JM, Fernández MJ, Martínez MJ, García JM, Naverrete M. [Transesophageal echocardiographic diagnosis of a ruptured sinus of valsalva aneurysm with right atrium fistula]. Rev Esp Cardiol 2001; 54:1236-9. [PMID: 11591308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Congenital aneurysms of the sinus of Valsalva are relatively rare, tending to be most frequent in adults. Untreated, there is a substantial risk of complication due to bacterial endocarditis and, if rupture occurs, rapid and progressive cardiac insufficiency is fatal at short term. We report the case of a 53-year-old male with a ruptured right sinus of Valsalva aneurysm, resulting in an anomalous right atrium fistula. Symptoms presented, clinical diagnosis and, above all, transesophageal echocardiography were crucial in the final diagnosis leading to an early and satisfactory surgical intervention. Catheterization and angiography were not definitive. Echocardiographic data are described and a bibliography of relevant research articles is provided.
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García JM, Yousfi K, Mateos R, Olmo M, Cert A. Reduction of oil bitterness by heating of olive (Olea europaea) fruits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2001; 49:4231-4235. [PMID: 11559116 DOI: 10.1021/jf001302n] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Olives (Olea europaea) of the Manzanilla and Verdial varieties, harvested at the green mature stage of ripening, were heated at 30, 40, 45, and 50 degrees C during 24 h and at 40 degrees C during 24, 48, and 72 h, respectively. Just after treatments, oils were physically extracted from the olives. Olive heating promotes a reduction of oil bitterness in direct relationship to the time and temperature used. Fruit heating at < or =40 degrees C during 24 h did not produce significant changes of acidity, UV absorption, peroxide index, panel test score, or oxidative stability of the obtained oils. Both longer treatments at 40 degrees C and heating at >40 degrees C yielded oils with less oxidative stability. Oils obtained from olives heated at > or =40 degrees C showed higher concentrations of chlorophylls and carotenes. For each olive variety, a good correlation between oil bitterness and content of hydroxytyrosol secoiridoid derivatives was found.
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Doblaré M, García JM. Application of an anisotropic bone-remodelling model based on a damage-repair theory to the analysis of the proximal femur before and after total hip replacement. J Biomech 2001; 34:1157-70. [PMID: 11506786 DOI: 10.1016/s0021-9290(01)00069-0] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this work, a new model for internal anisotropic bone remodelling is applied to the study of the remodelling behaviour of the proximal femur before and after total hip replacement (THR). This model considers bone remodelling under the scope of a general damage-repair theory following the principles of continuum damage mechanics. A "damage-repair" tensor is defined in terms of the apparent density and Cowin's "fabric tensor", respectively, associated with porosity and directionality of the trabeculae. The different elements of a thermodynamically consistent damage theory are established, including resorption and apposition criteria, evolution law and rate of remodelling. All of these elements were introduced and discussed in detail in a previous paper (García, J. M., Martinez, M. A., Doblaré, M., 2001. An anisotrophic internal-external bone adaptation model based on a combination of CAO and continuum damage mechanics technologies. Computer Methods in Biomechanics and Biomedical Engineering 4(4), 355-378.), including the definition of the proposed mechanical stimulus and the qualitative properties of the model. In this paper, the fundamentals of the proposed model are briefly reviewed and the computational aspects of its implementation are discussed. This model is then applied to the analysis of the remodelling behaviour of the intact femur obtaining densities and mass principal values and directions very close to the experimental data. The second application involved the proximal femoral extremity after THR and the inclusion of an Exeter prosthesis. As a result of the simulation process, some well-known features previously detected in medical clinics were recovered, such as the stress yielding effect in the proximal part of the implant or the enlargement of the cortical layer at the distal part of the implant. With respect to the anisotropic properties, bone microstructure and local stiffness are known to tend to align with the stress principal directions. This experimental fact is mathematically proved in the framework of this remodelling model and clearly shown in the results corresponding to the intact femur. After THR the degree of anisotropy decreases tending, specifically in the proximal femur, to a more isotropic behaviour.
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Silva J, Domínguez G, Silva JM, García JM, Gallego I, Corbacho C, Provencio M, España P, Bonilla F. Analysis of genetic and epigenetic processes that influence p14ARF expression in breast cancer. Oncogene 2001; 20:4586-90. [PMID: 11494155 DOI: 10.1038/sj.onc.1204617] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2001] [Revised: 04/10/2001] [Accepted: 05/09/2001] [Indexed: 11/09/2022]
Abstract
The INK4a/ARF locus encodes two unrelated cell cycle-regulatory proteins that both function in tumor suppression, p16INK4a and p14ARF. In human tumors including breast cancer, alterations affecting selectively p14ARF have been poorly analysed. We have performed a comprehensive analysis of the inactivation mechanisms (mutation, homozygous and hemizygous deletion, and promoter hypermethylation) in a large series of 100 primary breast carcinomas. RT-PCR showed expression variable of the p14ARF transcript, with 17% demonstrating overexpression and 26% demonstrating decreased expression. No detectable alterations were observed in the majority of cases with overexpressed p14ARF mRNA, but 77% of tumors with decreased expression presented at least one of these genetic/epigenetic alterations. Nevertheless, a statistically significant correlation was observed between decreased p14ARF expression and several poor prognostic parameters.
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40
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Sánchez-Quevedo MC, Ceballos G, García JM, Rodríguez IA, Gómez de Ferraris ME, Campos A. Scanning electron microscopy and calcification in amelogenesis imperfecta in anterior and posterior human teeth. Histol Histopathol 2001; 16:827-32. [PMID: 11510973 DOI: 10.14670/hh-16.827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Teeth fragments from members of a family clinically and genetically diagnosed as having amelogenesis imperfecta were studied by scanning electron microscopy and X-ray microprobe analysis to establish the morphological patterns and the quantitative concentration of calcium in the enamel of anterior (canine, incisor) and posterior (premolar and molar) teeth. The prism patterns in the enamel of teeth from both regions were parallel or irregularly decussate, with occasional filamentous prisms accompanied by small, irregularly rounded formations. Prismless enamel showed the R- and P-type patterns. Calcium levels in enamel of amelogenesis imperfecta and control teeth differed significantly between anterior and posterior teeth, indicating that the factors that influence normal mineralization in different regions of the dental arch are not altered in the process of amelogenesis imperfecta.
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Domínguez G, Silva J, Silva JM, García JM, Larrondo FJ, Vargas J, Sanfrutos L, Provencio M, España P, Bonilla F. Different expression of P14ARF defines two groups of breast carcinomas in terms of TP73 expression and TP53 mutational status. Genes Chromosomes Cancer 2001; 31:99-106. [PMID: 11319797 DOI: 10.1002/gcc.1123] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
In 95 breast carcinomas, we investigated P14ARF and TP73 mRNA expression and their relationship to TP53 mutations, determined by an immunohistochemical method, studying several clinicopathologic features of the tumors. P14ARF and TP73 mRNA levels were determined by semiquantitative reverse transcription polymerase chain reaction (RT-PCR), using beta-actin as a control. P14ARF was overexpressed in 19% of the cases and underexpressed in 24%. TP73 was overexpressed in 22% of the tumors, and normal levels were found in the remaining 78%. The analysis of TP53 showed positive immunostaining in 38% of cases. The association of P14ARF and TP73 overexpression was statistically significant, as was the association between positive TP53 staining and TP73 overexpression. P14ARF was related to TP53 only in those cases in which there was low expression of P14ARF. Concomitant overexpression of P14ARF and TP73 was statistically related to positive TP53 immunostaining. The analysis of concomitant P14ARF and TP73 overexpression and clinicopathologic parameters of the tumors showed a statistically significant difference with respect to peritumoral vessel invasion (P = 0.01), lymph node metastasis (P = 0.03), negative ERBB2 expression (P = 0.005), and more advanced pathologic stages (P = 0.03). These results suggest that overexpression of P14ARF and TP73 could be implicated in breast carcinoma tumorigenesis and, ultimately, in the phenotypic features of these lesions.
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Eliraz A, Ramirez-Rivera A, Ferranti P, Holzer R, García JM, Turcotte C, Rapatz G, Pfister P, Overend T, Kottakis J. Similar efficacy following four weeks treatment of asthmatics with formoterol 12 micrograms b.d. delivered by two different dry powder inhalers: differences in inhaler handling. Int J Clin Pract 2001; 55:164-70. [PMID: 11351769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
This randomised, multicentre, parallel-group study compared the clinical efficacy and ease of handling of two dry powder inhalers delivering the long-acting beta 2-agonist formoterol. After run-in, 200 asthmatics on treatment with inhaled corticosteroids and still presenting with suboptimal asthma control were randomised to receive 12 micrograms formoterol twice daily via either the Aerolizer inhaler (Foradil Aerolizer) or the Turbuhaler inhaler (Oxis Turbuhaler) for four weeks. Study variables included the mean morning pre-medication peak expiratory flow (PEF) during the last seven days of treatment and the correct inhaler handling according to inhaler-specific checklists. The mean difference in the effect on morning pre-medication PEF was 13.86 l/min in favour of formoterol via the Aerolizer inhaler (90% confidence interval 2.50, 25.21) in the intent-to-treat population. Eighty-six per cent of the patients under treatment with formoterol via the Turbuhaler inhaler performed correctly all the essential inhalation manoeuvres, whereas 98% of those on the Aerolizer inhaler did so. These results strongly suggest similar clinical efficacy with twice daily treatment of formoterol 12 micrograms metered dose delivered either by the Aerolizer, or the Turbuhaler device. They also suggest that handling the Aerolizer is easier than that of the Turbuhaler.
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Dones JJ, Lea MC, Camacho MA, Gutiérrez G, Fernández JL, García JM. [Fever of unknown origin and retroperitoneal adenopathies in an immunocompetent woman]. Enferm Infecc Microbiol Clin 2001; 19:179-80. [PMID: 11333606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Grenier S, Proietti MG, Renevier H, Gonzalez L, García JM, Gérard JM, García J. Glancing-angle diffraction anomalous fine structure of InAs quantum dots and quantum wires. JOURNAL OF SYNCHROTRON RADIATION 2001; 8:536-538. [PMID: 11512842 DOI: 10.1107/s0909049500016678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2000] [Accepted: 11/08/2000] [Indexed: 05/23/2023]
Abstract
We have performed Diffraction Anomalous Fine Structure measurements at the As K-edge of self-growth InAs/InP(001) Quantum Wires and InAs/GaAs(001) Quantum Dots. The samples have been grown by Molecular Beam Epitaxy and their equivalent thickness is of 2.5 monolayers. We have measured the (440) and (420) Bragg reflections in glancing-angle scattering geometry, at incidence angles close to the substrate critical angle. We demonstrate the feasibility of the experiment reporting, for the first time. Diffraction Anomalous Fine Structure spectra of such low coverage epitaxial layers, and we show that the analysis of the Diffraction Anomalous Fine Structure lineshape together with the analysis of oscillatory part of the signal, can provide information about composition and strain of the nanostructures.
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García JM, Doblaré M, Seral B, Seral F, Palanca D, Gracia L. Three-dimensional finite element analysis of several internal and external pelvis fixations. J Biomech Eng 2000; 122:516-22. [PMID: 11091954 DOI: 10.1115/1.1289995] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Finite Element Method (FEM) can be used to analyze very complex geometries, such as the pelvis, and complicated constitutive behaviors, such as the heterogeneous, nonlinear, and anisotropic behavior of bone tissue or the noncompression, nonbending character of ligaments. Here, FEM was used to simulate the mechanical ability of several external and internal fixations that stabilize pelvic ring disruptions. A customized pelvic fracture analysis was performed by computer simulation to determine the best fixation method for each individual treatment. The stability of open-book fractures with external fixations at either the iliac crests or the pelvic equator was similar, and increased greatly when they were used in combination. However, external fixations did not effectively stabilize rotationally and vertically unstable fractures. Adequate stabilization was only achieved using an internal pubis fixation with two sacroiliac screws.
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Ríos M, García JM, Sánchez JA, Pérez D. A statistical analysis of the seasonality in pulmonary tuberculosis. Eur J Epidemiol 2000; 16:483-8. [PMID: 10997837 DOI: 10.1023/a:1007653329972] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The present study examines whether pulmonary tuberculosis (PTB) has an annual seasonal pattern. A mathematical model is also obtained to forecast the pattern of incidence. The data for the study are the cases of PTB reported throughout Spain, published in the Epidemiology Bulletin by the Carlos III Health Center of the Spanish Ministry of Health in a 26-year period, 1971-1996. The analytical results show that the low rates in tuberculosis notifications over the period 1971-1981 have changed, halting in 1982 and reversing with high incidence from 1983 onwards. An annual seasonal pattern was also shown with higher incidence during summer and autumn. With the mathematical model we predicted the disease behaviour in 1997 and the results were compared to the reported cases. In Spain, as in several industrialised countries, the reason for this recent increase in the number of reported cases is, mainly, the human immunodeficiency virus (HIV) infection. The seasonal trend, with higher incidence in winter, can be attributed to the increase in indoor activities, much more common than in a warm climate. The tubercle bacilli expelled from infected persons in a room with closed windows may remain infectious for a long time, increasing the risk of exposure of healthy persons to the bacilli. As the preclinical period, from exposure to clinical onset, may be of several weeks, the high incidence in spring would be explained. Moreover, in winter and spring the infections of viral aetiology, like flu, are more frequent and cause immunological deficiency which is another reason for the seasonal trend observed. An incidence greater than that foreseen by the mathematical model would express a failure in epidemiologic surveillance, and thus the results of this study may be used to assess a quality of the preventive measures.
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Hernández Echebarría LE, Saiz A, Graus F, Tejada J, García JM, Clavera B, Fernández F. Detection of 14-3-3 protein in the CSF of a patient with Hashimoto's encephalopathy. Neurology 2000; 54:1539-40. [PMID: 10751278 DOI: 10.1212/wnl.54.7.1539] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sánchez J, Serrano J, Román J, García JM, Nomdedéu J, Torres A. A case of atypical myelodysplastic syndrome with a novel reciprocal translocation t(1;12)(q21;p13). Haematologica 2000; 85:434-5. [PMID: 10756375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
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49
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Campos A, Rodriguez IA, Sánchez-Quevedo MC, García JM, Nieto-Albano OH, Gómez de Ferraris ME. Mineralization of human premolar occlusal fissures. A quantitative histochemical microanalysis. Histol Histopathol 2000; 15:499-502. [PMID: 10809371 DOI: 10.14670/hh-15.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanisms of cariogenesis in occlusal fissures remain elusive because of limited information about fissure structure and wall mineralization. The purpose of the present study was to determine the correlation between morphological patterns in occlusal fissures in human premolars and quantitative histochemical patterns of mineralization in the walls of these formations. We used scanning electron microscopy and quantitative X-ray microanalysis with the peak-to-local background ratio method and microcrystalline calcium salts as standards. We distinguished three morphological patterns of fissures in scanning electron microscopic images. The wall of the fissures was less mineralized than the control enamel in all three types of fissures. Because the fissure walls are hypomineralized, we suggest that practicing dentists should take into account the degree of mineralization when they are preparing the fissures for the application of sealant.
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Palomo C, Oiarbide M, González-Rego MC, Sharma AK, García JM, González A, Landa C, Linden A. alpha-Oxymethyl Ketone Enolates for the Asymmetric Mannich Reaction. From Acetylene and N-Alkoxycarbonylimines to beta-Amino Acids This work was supported by the University of the Basque Country, the Basque Government (Projects UPV 170.215-G47/98, EX-1998-124) and in part by M. E. C. (Project PB 98-0549). Grants to A.S. and M.C.G. from the Basque Government, and to C.L. from the Government of Navarra and M.E.C. are acknowledged. Angew Chem Int Ed Engl 2000; 39:1063-1066. [PMID: 10760923 DOI: 10.1002/(sici)1521-3773(20000317)39:6<1063::aid-anie1063>3.0.co;2-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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