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1.
Materials (Basel) ; 16(12)2023 Jun 07.
Article in English | MEDLINE | ID: mdl-37374414

ABSTRACT

The historical stone heritage that we inherit must be passed on to future generations, not only in the same conditions that we found it but, if possible, in better ones. Construction also demands better and more durable materials, often stone. The protection of these materials requires knowledge of the types of rocks and their physical properties. The characterization of these properties is often standardized to ensure the quality and reproducibility of the protocols. These must be approved by entities whose purpose is to improve the quality and competitiveness of companies and to protect the environment. Standardized water absorption tests could be envisaged to test the effectiveness of certain coatings in protecting natural stone against water penetration, but we found that some steps of these protocols neglect any surface modification of the stones, and hence may not be completely effective when a hydrophilic protective coating (i.e., graphene oxide) is present. In this work, we analyze the UNE 13755/2008 standard for water absorption and propose alternative steps to adapt the norm for use with coated stones. The properties of coated stones may invalidate the interpretation of the results if the standard protocol is applied as is, so here we pay special attention to the characteristics of the coating applied, the type of water used for the test, the materials used, and the intrinsic heterogeneity of the specimens.

2.
Rev. cuba. reumatol ; 22(2): e761, mayo.-ago. 2020. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1126814

ABSTRACT

La deformidad de Madelung es una alteración poco común de la articulación de las muñecas. Se vincula a mutaciones del gen SHOX y se caracteriza por alteraciones en el radio, carpo y cúbito, con predominio bilateral. Afecta principalmente a pacientes de sexo femenino y aparece al inicio de la adolescencia. Se presenta una paciente de 15 años de edad, con antecedentes de problemas de salud. Al entrar en la adolescencia comenzó a presentar deformidad en ambas muñecas, más marcada en el lado derecho acompañado de dolor. El diagnóstico de deformidad de Madelung se concluyó mediante la clínica asociado a la positividad de los estudios imagenológicos, basados en los criterios radiográficos de Dannenberg y otros. Se decidió tratamiento quirúrgico, mediante osteotomía doble correctora para longitud y fijación externa de la mano derecha, con la resolución completa de la deformidad y seguimiento en la Consulta Externa de Ortopedia(AU)


Madelung's deformity is a rare alteration of the wrist joint. It is linked to mutations of the SHOX gene. It is characterized by alterations in the radius, carpus and ulna, predominantly bilateral. It mainly affects female patients; signs and symptoms are evident at the beginning of adolescence. To present a case of a patient with a diagnosis of Madelung deformity. The case of a 15-year-old female patient with a health history and family history of interest of an equine clubfoot father is presented. When she entered adolescence, she began to present deformity in both wrists, more marked in the right side accompanied by pain. This is a patient with a Madelung deformity. The diagnosis was concluded by the clinic associated with the positivity of the imaging studies(AU)


Subject(s)
Humans , Female , Adolescent , Congenital Abnormalities , Lipomatosis, Multiple Symmetrical/surgery , Lipomatosis, Multiple Symmetrical/congenital , Lipomatosis, Multiple Symmetrical/diagnostic imaging , Signs and Symptoms
3.
Enferm. glob ; 19(57): 479-492, ene. 2020. tab, graf
Article in Spanish | IBECS | ID: ibc-193659

ABSTRACT

INTRODUCCIÓN: Una estrategia que ha mostrado ser efectiva para promover el autocuidado en los pacientes con falla cardiaca es la formación de diadas y grupos que brinden apoyo de pares para favorecer el logro de metas individuales. OBJETIVO GENERAL: Determinar el efecto de un programa de paciente experto en falla cardiaca en los conocimientos relacionados con la adherencia al tratamiento y en la satisfacción. MÉTODO: Se realizó un estudio piloto descriptivo de corte transversal en pacientes con diagnósticos de falla cardiaca en una institución de cuarto nivel. El tamaño de la muestra correspondió a toda la población con los criterios de restricción (N: 20 sujetos). Se implementó un programa de paciente experto durante 6 meses y se midieron los desenlaces de nivel de conocimientos y satisfacción. Para la recolección de la información se utilizó un test de conocimientos sobre adherencia al tratamiento y una encuesta de satisfacción. La información se procesó a través del programa IBM SPSS Statistics 23.0, y se realizó un análisis descriptivo con distribución de frecuencias absolutas y relativas. RESULTADOS: Más del 95% de los pacientes mostró mejoría significativa en el nivel de conocimientos y el 85% refirió el nivel de satisfacción global más alto (muy satisfechos), reflejado en la dimensión de fidelización y efectividad. CONCLUSIONES: El programa del paciente experto en insuficiencia cardiaca se constituye en una intervención costo-efectiva que proporciona capacidades para ayudar a otros pacientes a adquirir autoconfianza y habilidades en el manejo de su condición de salud


INTRODUCTION: One of the strategies that has shown improvement in self-care for patients with heart failure is the formation of dyads and groups to provide peer support and achieve individual goals. GENERAL OBJECTIVE: To determine the effect of an expert patient program on heart failure related to the knowledge about adherence to treatment and satisfaction. METHOD: A sectional-descriptive pilot study was conducted in patients with heart failure diagnoses in a fourth-level institution. The sample size represents the entire population with the restriction criteria (N: 20 subjects). An expert patient program was implemented for 6 months and the measured outcomes were level of knowledge and satisfaction. Data was gathered from a knowledge test on adherence to treatment and a satisfaction poll. Information was processed with IBM SPSS Statistics 23.0. The distribution of absolute and relative frequencies was performed by descriptive analysis. RESULTS: More than 95% of patients showed improvement in the level of knowledge and 85% reported a high global level of satisfaction (very satisfied), reflected in the dimension of loyalty and effectiveness. CONCLUSIONS: The expert patient in heart failure program is a cost-effective intervention, which provides capabilities to help other patients gain self-confidence and skills to manage their health condition


Subject(s)
Humans , Heart Failure/nursing , Self Care/methods , Patient Education as Topic/methods , Cross-Sectional Studies , Evaluation of the Efficacy-Effectiveness of Interventions , Cost-Benefit Analysis , Treatment Adherence and Compliance/statistics & numerical data , Health Knowledge, Attitudes, Practice , Patient Satisfaction/statistics & numerical data
4.
J Genet ; 992020.
Article in English | MEDLINE | ID: mdl-33622990

ABSTRACT

A relationship between the polymorphism in promoter region of the UGT1A1 gene and the development of jaundice has been demonstrated recently. This polymorphism leads to 30% of normal rate transcription initiation of UGT1A1 gene, thus decreasing the bilirubin glucuronidation. The combination of the G6PD deficiency and polymorphism in neonates and adults may causepronounced hyperbilirubinaemias. The aim of this study was to analyse the variations in the UGT1A1 gene promoter in Panamanians neonates with G6PD deficiency and its association with neonatal jaundice (NJ). We identified five different genotypes of TA repeats, in 17 neonates (42.5%) the normal variant TA6/TA6 and in the other 57.5% of the subjects: TA7/TA7 (12.5%), TA6/TA7 (40%), TA6/TA8 (2.5%) and TA6/TA5 (2.5%). Additionally 75% of the 16 newborns that showed NJ had an abnormal variant in the promotersequence, although, there was no significant difference (P = 0.068). The risk of jaundice in neonates with TA7 variant was thrice higher in subjects than with other alleles (P = 0.093, CI: 0.81-11.67). The TA7 allele frequency in this study (0.325) was consistent with the global frequency and similar to Caucasians. The results proved that there is no significant relationship between promoter polymorphism in UGT1A1 and NJ in G6PD deficient Panamanian newborns. Further studies with a greater number of subjects would determine the exact relationship between marked NJ and UGT1A promoter variations.


Subject(s)
Genetic Predisposition to Disease , Glucosephosphate Dehydrogenase Deficiency/genetics , Glucosephosphate Dehydrogenase/metabolism , Glucuronosyltransferase/genetics , Polymorphism, Genetic , Female , Genotype , Glucosephosphate Dehydrogenase Deficiency/enzymology , Glucosephosphate Dehydrogenase Deficiency/epidemiology , Glucosephosphate Dehydrogenase Deficiency/pathology , Humans , Infant, Newborn , Male , Panama/epidemiology , Prevalence , Promoter Regions, Genetic
5.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1408480

ABSTRACT

RESUMEN Introducción: El desescalamiento de las medidas para controlar la epidemia por la COVID-19 en Cuba no exonera la vigilancia permanente para evitar rebrotes. Objetivo: Mostrar el diseño de un sistema de vigilancia epidemiológica hospitalaria para la detección precoz de casos sospechosos en la etapa pos COVID-19. Métodos: Investigación cualitativa. Se localizó información en las bases de datos Lilacs, Ebsco e Hinari con los descriptores: vigilancia en salud, monitoreo epidemiológico y servicios de vigilancia epidemiológica. A partir de las definiciones de casos objeto de vigilancia, se definieron los objetivos del sistema, premisas, atributos y subsistemas. Se tuvo en cuenta la metodología utilizada en un sistema de vigilancia en Cuba desarrollado y modificado por especialistas cubanos. Resultados: El sistema se estructura a partir de cuatro componentes: entrada de datos, procesamiento de los datos obtenidos de encuestas epidemiológicas aplicadas a pacientes y acompañantes, salida de la información con la descripción del tipo de caso y retroalimentación; está conformado por cuatro subsistemas: Diagnóstico Clínico, de Laboratorio, Epidemiológico y Estadístico. El sistema ha detectado precozmente casos sospechosos en pacientes hospitalizados, previo a la intervención quirúrgica y a otros procederes mínimos invasivos. Conclusiones: Se muestra el diseño de un sistema de vigilancia epidemiológica hospitalaria, como herramienta de trabajo, conformado por cuatro subsistemas para obtener los datos que facilitan la detección precoz de casos sospechosos de COVID-19 y su confirmación y establecer acciones de prevención y control del riesgo tanto para el Centro Nacional de Cirugía de Mínimo Acceso como para las organizaciones involucradas


ABSTRACT Introduction: Cuba prepares for recovery and for keeping the COVID-19 epidemic under control in the national territory. Gradual de-escalation of measures until getting into the new normal does not exempt permanent surveillance to avoid new outbreaks. Objective: Show the procedure used in the design of a hospital epidemiological surveillance´s system for the early detection of suspected cases in the pos-COVID-19 stage. Methods: Qualitative research. It was located information in the databases Lilacs, Ebsco and Hinari with the descriptors: health surveillance, epidemiological monitoring, and services of epidemiological surveillance. From the definition of cases under surveillance, there were defined the objectives of the system, premises, attributes and subsystems. It was taken into account the methodology used in a surveillance system in Cuba which was developed and modified by Cuban specialists. Results: The system is structured from four components: data entry, processing of data collected in epidemiological surveys applied to patients and their companions, and data output with the description of the type of case and feedback. This is also formed by four subsystems: clinical diagnosis, laboratory diagnosis, epidemiological diagnosis and statistical diagnosis. The system has early detected suspicious cases in hospitalized patients before surgical interventions and other minimal invasive procedures. Conclusions: A hospital epidemiological surveillance system is designed as a working tool for obtaining information that facilitates the early detection of COVID-19 suspected cases and their confirmation, and to establish risk prevention and control actions for both the National Center of Minimal Access Surgery and the organizations involved.

6.
An. psicol ; 35(3): 405-416, oct. 2019. tab
Article in English | IBECS | ID: ibc-190028

ABSTRACT

The present case-control, double-blind, and prospective study investigated the effects of Numeracy Music Training (NMT) on cognitive skills of primary school children. Participating in the study were 42 children aged 8 to 10 years divided into two groups: Low Achievement in Math (n = 21), and Average Achievement in Math (n = 21). The children underwent two evaluations before and after NMT, where cognitive tests and behavior scales were applied that assessed variables such as school performance, IQ, working memory, numerical cognition, anxiety and stress. NMT was developed in eight group sessions and aimed to stimulate the systems of numerical cognition and integrate basic musical knowledge, and symbolic representations. After the intervention, through musical training, the children in both groups showed significant improvements in school performance, systems of numerical cognition and working memory, as well as the reduction of manifestation of mathematics anxiety


El presente estudio caso-control, doble ciego, y prospectivo investigó los efectos del entrenamiento musical numérico (NMT; Numeracy Musical Training), sobre habilidades cognitivas en niños de enseñanza primaria. Participaron 42 niños de 8 a 10 años divididos en dos grupos: con Bajo Rendimiento Aritmético (N= 21), y con Rendimiento Aritmético Medio (N = 21). Los niños pasaron por dos evaluaciones, antes y después de la realización del NMT, en las cuales se aplicaron pruebas cognitivas y escalas de comportamiento, que evaluaban variables como: rendimiento escolar, CI, memoria operativa, cognición numérica, ansiedad y estrés. El NMT fue desarrollado en ocho sesiones colectivas y tuvo como objetivo estimular los sistemas de la cognición numérica e integrar conocimientos musicales básicos y representaciones simbólicas. Después de la intervención por medio del entrenamiento musical los niños de ambos grupos obtuvieron mejoras significativas en el rendimiento académico, en los sistemas de la cognición numérica y en la memoria operativa, así como una disminución de la manifestación de ansiedad a las matemáticas


Subject(s)
Humans , Male , Female , Child , Underachievement , Mathematics/education , Double-Blind Method , Cognition/physiology , Music Therapy/methods , Dyscalculia/psychology , Case-Control Studies , Prospective Studies , Music/psychology , Memory, Short-Term/physiology
7.
J Acquir Immune Defic Syndr ; 79(4): 491-500, 2018 12 01.
Article in English | MEDLINE | ID: mdl-30371532

ABSTRACT

BACKGROUND: Physical impairment is highly prevalent in HIV-infected patients. We conducted a systematic review of published studies that included studies comparing muscle function in HIV-infected patients to matched healthy controls, and studies comparing aerobic capacity in HIV-infected patients with that observed in matched healthy controls. DESIGN: Systematic review and meta-analysis. METHODS: We searched for references on MEDLINE, SciELO, Cumulative Index to Nursing and Allied Health (CINAHL), and Scopus up to December 2017. Weighted mean differences and 95% confidence intervals (CIs) were calculated, and heterogeneity was assessed using the I test. RESULTS: A total of 30 studies, covering 2148 healthy controls and 2161 HIV-infected patients, fulfilled the inclusion criteria. The average muscle strength and aerobic capacity were significantly lower in HIV-infected patients. Meta-analysis revealed moderate-quality evidence of weaker muscle strength and aerobic capacity in HIV-infected patients. A significant difference in lower-body strength of 1.07 (95% CI: 0.29 to 1.84) was found for participants in the healthy control group compared with HIV group. A significant difference in aerobic capacity (peak VO2) of 8.4 (95% CI: 4.8 to 12.0) was found for participants in the healthy control group compared with HIV group. CONCLUSIONS: Muscle strength and aerobic capacity of HIV-infected patients are reduced in comparison with healthy controls. Additional studies are needed to define the best interventions to improve the physical function in HIV-infected patients.


Subject(s)
HIV Infections/pathology , Muscle Fatigue , Muscle Strength , Adolescent , Adult , Aerobiosis , Aged , Child , Exercise , Female , Humans , Male , Middle Aged , Young Adult
8.
Rev. psicol. organ. trab ; 18(1): 316-325, mar. 2018. tab
Article in Portuguese | LILACS | ID: biblio-903014

ABSTRACT

O propósito deste estudo foi analisar a relação entre Clima Organizacional (CO) e Gestão do Conhecimento (GC) partindo da revisão sistemática da literatura. A pesquisa bibliográfica foi realizada nas bases de dados Web of Science e Scopus, por meio dos descritores "organizational climate" e "knowledge management". Os resultados mostraram uma relação entre os termos nos diversos sistemas de produção (bens e serviços), não foram encontrados estudos dessa relação em países em desenvolvimento, nem no Brasil. Há um consenso na literatura, que aponta que o CO favorável (analisando variáveis como motivação, satisfação, comunicação, liderança, entre outros) promove benefícios sobre a GC e vice-versa. Estudos futuros devem analisar as relações entre fatores do CO e a GC: por exemplo, os fatores motivadores e as barreiras à intenção de partilhar o conhecimento avaliando os ambientes de trabalho, por meio de instrumentos de pesquisas e rigorosas análises de correlação. Estudar como as variáveis de CO e GC se relacionam em diferentes contextos e culturas.


The purpose of this study was to analyze the relationship between Organizational Climate (OC) and Knowledge Management (KM) based on systematic review of the literature in the Web of Science and Scopus databases, using the descriptors "organizational climate" and "knowledge management". The results showed a relationship between the terms, and no studies of this relationship were found in developing countries, nor in Brazil. There is a consensus in the literature, which points out that a favorable OC promotes benefits regarding KM and vice versa. Future studies should analyze relationships between OC and KM factors, for example, motivating factors and barriers to the intention to share knowledge, by evaluating work environments through research tools and rigorous correlation analyses. Also, study is needed on how OC and KM variables are related in different contexts and cultures.


El propósito de este estudio es analizar la relación entre Clima Organizacional (CO) y Gestión del Conocimiento (GC) a partir de la revisión sistemática de la literatura en las bases de datos Web of Science y Scopus, y por medio de los descriptores "organizational climate" and "knowledge management". Los resultados mostraron una relación entre estos términos y que noexisten estudios de esta relación en países en desarrollo, ni en Brasil. En la literatura hay un consenso que indica que el CO favorable promueve beneficios en la GC y viceversa. Los estudios futuros deben examinar las relaciones entre los factores CO y GC: por ejemplo, elementos motivadores y barreras a la intención de compartir conocimientos, evaluando los ambientes de trabajo a través de instrumentos de investigación y rigurosos análisis de correlación. Estudiar cómo las variables de CO y GC se relacionan en diferentes contextos y culturas.

9.
Blood ; 131(1): 108-120, 2018 01 04.
Article in English | MEDLINE | ID: mdl-29051183

ABSTRACT

Leukemia relapse remains the major cause of allogeneic hematopoietic stem cell transplantation (HCT) failure, and the prognosis for patients with post-HCT relapse is poor. There is compelling evidence that potent selective antileukemic effects can be delivered by donor T cells specific for particular minor histocompatibility (H) antigens. Thus, T-cell receptors (TCRs) isolated from minor H antigen-specific T cells represent an untapped resource for developing targeted T-cell immunotherapy to manage post-HCT leukemic relapse. Recognizing that several elements may be crucial to the efficacy and safety of engineered T-cell immunotherapy, we developed a therapeutic transgene with 4 components: (1) a TCR specific for the hematopoietic-restricted, leukemia-associated minor H antigen, HA-1; (2) a CD8 coreceptor to promote function of the class I-restricted TCR in CD4+ T cells; (3) an inducible caspase 9 safety switch to enable elimination of the HA-1 TCR T cells in case of toxicity; and (4) a CD34-CD20 epitope to facilitate selection of the engineered cell product and tracking of transferred HA-1 TCR T cells. The T-cell product includes HA-1 TCR CD4+ T cells to augment the persistence and function of the HA-1 TCR CD8+ T cells and includes only memory T cells; naive T cells are excluded to limit the potential for alloreactivity mediated by native TCR coexpressed by HA-1 TCR T cells. We describe the development of this unique immunotherapy and demonstrate functional responses to primary leukemia by CD4+ and CD8+ T cells transduced with a lentiviral vector incorporating the HA-1 TCR transgene construct.


Subject(s)
Hematopoietic Stem Cell Transplantation , Immunotherapy , Leukemia/therapy , T-Lymphocytes/immunology , Cells, Cultured , Humans , Leukemia/immunology , Minor Histocompatibility Antigens/metabolism , Oligopeptides/metabolism , Receptors, Antigen, T-Cell/metabolism
10.
Univ. psychol ; 16(3): 26-35, jul.-set. 2017. tab
Article in Spanish | LILACS, COLNAL | ID: biblio-963273

ABSTRACT

Resumen La presente investigación tuvo como objetivo caracterizar el perfil neurocognitivo de niños en relación con las habilidades cuantitativas, intelectuales, de memoria operativa y sus aspectos emocionales. La muestra fue de 42 niños de edad escolar de 8 a 10 años, divididos en dos grupos: con dificultades en aritmética (CDA = 21) y sin dificultades en aritmética (SDA = 21), que fueron evaluados a través de pruebas cognitivas y escalas de comportamiento, que analizaron variables como: rendimiento escolar, razonamiento abstracto, memoria operativa, cognición numérica, ansiedad y estrés. El perfil de los niños CDA se caracterizó por dificultades en el rendimiento escolar de forma general. Se encontraron síntomas de estrés compatibles con fases de alerta y resistencia, baja capacidad de memoria operativa y de cognición numérica, específicamente de procesamiento numérico y cálculo.


Abstract This study aimed to characterize the neurocognitive profile of children regarding quantitative, intellectual, and mnemonic skills; and their emotional state. The sample consisted of 42 school children 8-10 years old, divided into two groups: those with difficulties in arithmetic (CDA = 21) and without difficulties in arithmetic (SDA = 21). The children were evaluated through cognitive tests and behaviour scales, which analysed variables such as scholar achievement, abstract reasoning, working memory, numerical cognition, anxiety and stress. The profile of CDA children was characterized by global difficulties in schooling achievement. Also they had stress symptoms compatible with alert and resistance phases, low capacity in working memory and numerical cognition, specifically for numerical processing and calculation.


Subject(s)
Humans , Memory, Short-Term , Child Development , Cognition , Learning
11.
Arch. méd. Camaguey ; 20(2)mar.-abr. 2016.
Article in Spanish | CUMED | ID: cum-66311

ABSTRACT

Fundamento: se menciona lo frecuente de los fenómenos trombóticos y hemorrágicos en el mesotelioma pleural maligno, siempre relacionados a la hipercoagulabilidad multifactorial de la sangre propia de las neoplasias malignas.Objetivo: conocer las causas de los eventos tromboembólicos y hemorrágicos en mesotelioma pleural maligno y su relación con el asbesto.Desarrollo: se hace un breve recuento de los últimos cuatro casos tratados con este diagnóstico que tuvieron estas complicaciones. Se mencionan la hipercoagulabilidad de la sangre, la tríada de Virchow y los fenómenos paraneoplásicos en los tumores malignos o síndrome de Trousseau. Se señala que no siempre el asbesto está ligado al mesotelioma pleural maligno y que las tres causas principales son: la trombocitosis, la coagulación intravascular diseminada con el consumo de los factores de la coagulación y las plaquetas y la liberación por las células endoteliales del vasoconstrictor endotelina-1.Conclusiones: se insiste en las causas para comprender el origen de estas complicaciones donde se involucran la trombocitosis, la CID y el vasoconstrictor endotelina-1 del endotelio vascular. Se considera que este tema ha sido poco abordado en la literatura médica nacional.(AU)


Background: the frequency of thrombotic and hemorrhagic phenomena in malignant pleural mesothelioma. The presentation´s purpose is to deepen the causes and its relation to asbesto.Objective: to know the causes of these phenomena in this malignant disease.Development: a brief analysis of the last four treated and diagnosed cases which had the same complications is performed. Hypercoagulability of blood, Virchow´s triad and paraneoplastic manifestations in malignant tumors or Trousseau´s syndrome are mentioned. It is pointed out that the three main causes established are thrombocytosis, disseminated intravascular coagulation with the consumption of coagulation factors and platelets, and the endothelial cells of the vasoconstrictor endothelin-1 release. In addition, asbesto is not always related to malignant pleural mesothelioma.Conclusions: it is insisted on the causes for understanding the origin of these complications like thrombocytosis, DIC, and vasoconstrictor endothelin-1. It is considered that this subject has not been tackled enough in national medical literature.(AU)


Subject(s)
Humans , Mesothelioma , Pleural Neoplasms , Pulmonary Embolism , Thromboembolism
12.
Gen Dent ; 61(6): 52-5, 2013.
Article in English | MEDLINE | ID: mdl-24064164

ABSTRACT

Most root canal treatments are performed over multiple appointments. The temporary sealing material used between sessions must have sealing properties capable of preventing microleakage. This study assessed the degree of microleakage of temporary sealing materials according to time spent blocking the access cavity. Endodontic treatments with a standardized protocol were performed on 63 healthy, single-rooted, caries-free human teeth. The teeth were divided randomly into 5 groups. Groups 1-3 were each treated with 1 of 3 sealing materials, while Group 4 and 5 served as positive and negative controls, respectively. Data was obtained and analyzed with nonparametric tests (Kruskal-Wallis and Chi-square). Results indicated statistically significant differences between materials and the degree of microleakage (P = 0.000). All 3 sealing materials allowed microleakage within 48 hours, with glass ionomer cement demonstrating the most microleakage.


Subject(s)
Dental Leakage/prevention & control , Dental Restoration, Temporary/methods , Root Canal Therapy/methods , Dental Cements/therapeutic use , Dental Restoration, Temporary/adverse effects , Humans , In Vitro Techniques , Root Canal Filling Materials , Root Canal Therapy/adverse effects , Zinc Oxide/therapeutic use , Zinc Phosphate Cement/therapeutic use
13.
GEN ; 58(4): 200-203, oct.-dic. 2004. tab, graf
Article in Spanish | LILACS | ID: lil-421182

ABSTRACT

Durante el tratamiento de la Hepatitis C crónica, el interferón alfa es capaz de inducir disfunción tiroidea con variadas manifestaciones clínicas. El hipotiroidismo es más común que el hipertiroidismo. Se ha descrito también hipertiroidismo seguido por hipotiroidismo. Los síntomas clínicos varían desde ser subclínico hasta mostrar manifestaciones severas de la enfermedad. La disfunción puede persistir después de descontinuar el tratamiento con interferón. Hipotiroidismo es fácilmente controlable con reemplazo con L-thyronina, si es necesario, y la regresión se puede observar luego de omitir el tratamiento con interferón. Los casos de hipertiroidismo deben ser bien evaluados. El desarrollo de anticuerpos anti tiroideos o incremento de los títulos de dichos anticuerpos ha sido observado durante el tratamiento con interferon alfa, sugiriendo la existencia de mecanismo inmunológico para el origen de ésta disfunción. Se necesitan estudios clínicos para aclarar la asociación entre la infección por el virus de la hepatitis C y la autoinmunidad tiroidea, y determinar4 factores de riesgo para el desarrollo de disfunción de ésta glándula durante el tratamiento con interferón


Subject(s)
Adult , Male , Humans , Female , Middle Aged , Thyroid Gland/pathology , Hepatitis C, Chronic/therapy , Interferons , Gastroenterology , Venezuela
14.
Mol Immunol ; 40(11): 773-83, 2004 Jan.
Article in English | MEDLINE | ID: mdl-14687934

ABSTRACT

The zebrafish genomic sequence database was analysed for the presence of genes encoding members of the Toll-like receptors (TLR) and interleukin receptors (IL-R) and associated adaptor proteins containing a TIR domain. The resulting predictions show the presence of one or more counterparts for the human TLR1, TLR2, TLR3, TLR4, TLR5, TLR7, TLR8, TLR9, IL-1R and IL-18R genes and one copy of the adaptor genes MyD88, MAL, TRIF and SARM. In contrast to data for the pufferfish Fugu rubripes, zebrafish has two genes that are highly similar to human TLR4. In addition, one fish-specific TLR group can be distinguished that is closely related to the Drosophila melanogaster Toll-9 gene. The sequence of cloned cDNAs for TLR4, TLR2 and MyD88 show the same intron-exon organisation as in the human counterparts. Expression analysis using reverse transcriptase-PCR (RT-PCR) shows that 17 of the predicted zebrafish TLR genes and all the genes encoding adaptor proteins are expressed in the adult stage. A subset of the TLR genes are expressed at higher levels in fish infected with the pathogen Mycobacterium marinum. The induced genes include the homologues of the human TLR1 and TLR2 genes, whose functions are associated with mycobacterial infections, underscoring the suitability of zebrafish as a model for analysis of the vertebrate innate immune system.


Subject(s)
Membrane Glycoproteins/genetics , Multigene Family , Receptors, Cell Surface/genetics , Zebrafish/genetics , Animals , Gene Expression Profiling , Interleukin-18 Receptor alpha Subunit , Membrane Glycoproteins/biosynthesis , Phylogeny , Protein Structure, Tertiary , Receptors, Cell Surface/biosynthesis , Receptors, Interleukin/genetics , Receptors, Interleukin-1/genetics , Receptors, Interleukin-18 , Reverse Transcriptase Polymerase Chain Reaction , Sequence Alignment , Sequence Analysis, DNA , Sequence Analysis, Protein , Sequence Homology , Toll-Like Receptor 1 , Toll-Like Receptor 2 , Toll-Like Receptor 3 , Toll-Like Receptor 4 , Toll-Like Receptor 5 , Toll-Like Receptor 7 , Toll-Like Receptor 8 , Toll-Like Receptors , Zebrafish/metabolism
15.
GEN ; 57(4): 226-228, oct.-dic. 2003. tab, graf
Article in Spanish | LILACS | ID: lil-396400

ABSTRACT

Durante el tratamiento de la Hepatitis C crónica, el interferón alfa es capaz de inducir disfunción tiroidea con varias manifestaciones clinicas. El hipotiroidismo es más común que el hipertiroideismo. Se ha descrito también hipertoroidismo seguido por hipotiroidismo. Los síntomas clínicos varían desde ser subclínico hasta mostrar manifestaciones severas de la enfermedad. La disfunción puede persistir después de descontinar el tratamiento con interferón. Hipotiroidismo es fácilmente controlable con reemplazo con L-thyronina, si es necesario, y la regresión se puede observar luego de omitir el tratamiento con interferón. Los casos casos de hipertiroidismo deben ser bien evaluados. El desarrollo de anticuerpos anti tiroideos o incremento de títulos de dichos anticuerpos ha sido observado durante el tratamiento con interferón alfa, sugiriendo la existencia de mecanismo inmunológico para aclarar la asociación entre la infección por el virus de la hepatitis C y la autoinmunidad tiroidea, y determinar factores de riesgo para el desarrollo de disfunción de ésta glándula durante el tratamiento con interferón


Subject(s)
Hepatitis C, Chronic/metabolism , Hepatitis C, Chronic/therapy , Interferon-alpha , Thyroid Gland , Gastroenterology , Venezuela
16.
GEN ; 57(3): 162-164, jul.-sept. 2003. tab
Article in Spanish | LILACS | ID: lil-396394

ABSTRACT

La cirugía puede ofrecer una paliación efectiva a pacientes con obstrucción gastrointestinal causada por lesiones malignas irresecables o metastásicas. Existen otros métodos no quirúrgicos, endoscópicos que pueden dar una paliación efectiva, que incluyen las dilataciones, Nd:YAG laser, fotoablación, electrocoagulación, crioterapia y tratamiento fotodinámico. Todas éstas modalidades son eficaces para restaurar la luz del órgano, pero su efectividad está limitada si se considera que requieren tratamiento repetido que consumen tiempo y aumentan las molestias al paciente, los costos y complicaciones. La inserción endosopica de prótesis metálicas autoexpansibles para restaurar y mantener la luz del tracto gastrointestinal ha sido descrita previamente. Los carcinomas situados en diferentes áreas del sistema han sido tratados por éste método. Aquí reportamos nuestra experiencia con prótesis metálicas autoexpansibles en 9 pacientes inoperables con diferentes tipos de tumores gastrointestinales, las prótesis metálicas autoexpansibles pueden ser consideradas una solución simple y efectiva para paliación a largo plazo de estenosis malignas del tracto gastrointestinal


Subject(s)
Humans , Male , Female , Middle Aged , Constriction, Pathologic/surgery , Gastrointestinal Neoplasms , Intestinal Obstruction/surgery , Intestinal Obstruction/diagnosis , Prostheses and Implants , Gastroenterology , Venezuela
17.
Med. interna (Caracas) ; 14(4): 209-13, 1998. ilus
Article in Spanish | LILACS | ID: lil-261460

ABSTRACT

Se presenta un caso de leishmaniasis visceral complicada con síndrome de hipertensión portal, en una paciente femenina, de 55 años de edad, diabética y desnutrida, con hepatoesplenomegalia leve y pancitopenia severa en qien fue difícil el diagnóstico de leismaniasis visceral. esto se logró en una segunda biopsia de médula ósea, y debido a complicaciones atribuibles a su enfermedad, como el síndrome de hipertensión portal fue necesario sustituir el trataminento con glucantime (100 mg/kg/día) por anfotericina B (0,25mg/kg/día), con una buena evolución


Subject(s)
Humans , Female , Adult , Amphotericin B/administration & dosage , Hypertension/complications , Hypertension/diagnosis , Leishmaniasis, Visceral/classification , Leishmaniasis, Visceral/diagnosis , Leishmaniasis, Visceral/prevention & control
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