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Id: biblio-831338
Autor: Lillo G., Macarena; Saavedra B., Giannina; Concha C., Francisca; Ávila A., Alejandra; Codner D., Ethel; Araya Q., Magdalena; Oyarzún A., Amaya; Pérez B., Francisco.
Título: Frecuencia de anticuerpos anti-transglutaminasa y antiendomisio en pacientes con diabetes tipo 1 / Association of type 1 diabetes mellitus with celiac disease
Fonte: Rev. chil. endocrinol. diabetes;9(1):15-18, ene. 2016. tab.
Idioma: es.
Projeto: Fondecyt.
Resumo: Background: Type 1 diabetes mellitus and celiac disease share common genetic and immunological aspects and celiac disease is more common among type 1 diabetic patients. Aim: To determine the frequency of anti endomysial and anti transglutaminase antibodies among patients with type 1 diabetes. Material and Methods: Anti endomysialantibodies determined by indirect immunofluorescence an anti transglutaminase antibodies determined by ELISA were measured in 410 serum samples of patients with type 1 diabetes. Results: Seventy one samples (17 percent) had positive anti transglutaminase antibodies. Among these, 17 had also positive anti endomysial antibodies. In 11 of these 17 patients, the presence of celiac disease was confirmed. Conclusions: Among patients with type 1 diabetes mellitus, the frequency of celiac disease is three times higher than in the general population.
Responsável: CL1.1 - Biblioteca Central


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Id: lil-754751
Autor: Poitevin, Bernard.
Título: Las bases científicas de la homeopatía / The scientific basis of homeopathy
Fonte: Homeopatia Méx;83(693):31-40, nov.-dic. 2014.
Idioma: es.
Resumo: A través de un recorrido por los principios de la Homeopatía y la evolución de sus ideas es posible delimitar las líneas de investigación que podrían desarrollarse para responder las dudas e interrogantes que surgen de la aplicación de esta disciplina,situada entre las ciencias médicas, humanas, biológicas y físicas.A continuación se presenta el resumen de diversas investigaciones que han comprobado, por ejemplo, que los medicamentos homeopáticos sí actúan en células, modelos animales y seres humanos, aunque no se ha logrado explicarcómo; además, se pone de manifiesto que los criterios para evaluar no pueden ser idénticos a los que se emplean en la farmacología clásica, si bien existe cierta similitud.Se concluye que a pesar de que hay demasiados aspectos de la Homeopatía que siguen sin tener una explicación coherente en términos científicos clásicos, no deben rechazarse sin miramientos, sino estudiarse.

Through a tour of the principles of homeopathy and the evolution of his ideas is possible to delineate the lines of research that could be developed to answer the doubts and questions that arise from the application of this discipline, between the medical and social sciences, biological and physical.The summary of several studies that have found, for example is presented, that homeopathic medicines do act on cells, animal models and humans, but has not been able to explainhow; moreover, shows that the criteria for evaluating may not be identical to those used in classical pharmacology, while there is some similarity.We conclude that although there are too many aspects of homeopathy that still lack a coherent explanation in classical scientific terms, should not be rejected without consideration, but studied.
Responsável: BR926.1 - Biblioteca Artur de Almeida Rezende Filho


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Texto completo SciELO Saúde Pública
Silva, Luciana Rodrigues
Assis, Ana Marlúcia Oliveira
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Id: lil-736438
Autor: Conceição-Machado, Maria Ester Pereira da; Santana, Mônica Leila Portela; Silva, Rita de Cássia Ribeiro; Silva, Luciana Rodrigues; Pinto, Elizabete Jesus; Couto, Ricardo David; Moraes, Lia Terezinha Lana Pimenta; Assis, Ana Marlúcia Oliveira.
Título: Triagem sorológica para doença celíaca em adolescentes / Serologic screening of celiac disease in adolescents
Fonte: Rev. bras. epidemiol;18(1):149-156, Jan-Mar/2015. graf.
Idioma: pt.
Projeto: Fundação de Amparo à Pesquisa do Estado da Bahia.
Resumo: OBJETIVO: Este estudo objetivou identificar a soroprevalência da doença celíaca em adolescentes de escolas públicas da cidade de Salvador, Bahia. MÉTODO: Trata-se de um estudo transversal com amostra probabilística de 1.213 adolescentes de 11 a 17 anos, de ambos os sexos. O índice de massa corporal foi utilizado para o diagnóstico do estado nutricional, adotando-se os percentis segundo idade e sexo, propostos pela World Health Organization. O anticorpo anti-transglutaminase humana da classe imunoglobulina A (anti-tTG-IgA) foi adotado como teste sorológico para triagem da doença celíaca e foi determinado pela técnica do ensaio imunoabsorvente ligado à enzima (ELISA). Foi realizada análise descritiva, utilizando-se a proporção e a média (desvio padrão). RESULTADOS: O sexo feminino predominou entre os adolescentes, e a maioria encontrava-se com adequado estado nutricional. O anticorpo anti-tTG-IgA foi positivo em 6/1.213 (0,49%) adolescentes. CONCLUSÃO: A soroprevalência de doença celíaca entre os adolescentes estudados foi 0,49%. Novas investigações são necessárias para confirmar a prevalência de doença celíaca nessa faixa etária. .

OBJECTIVE: This study aimed to identify the seroprevalence of celiac disease in adolescents from public schools in the city of Salvador, Bahia. METHODS: This was a cross-sectional study with probabilistic sample of 1,213 adolescents, aged 11 to 17 years old, of both genders. The body mass index was used to determine the participants' nutritional status based on the percentiles for age and gender recommended by the World Health Organization. Measurement of the anti-human transglutaminase immunoglobulin A (anti-tTG-IgA) antibody was established as the specific screening test for celiac disease, which involved an enzyme-linked immunosorbent assay (ELISA). Descriptive analysis was performed using proportions and means (standard deviation). RESULTS: The female gender prevailed in the sample, and most of the participants had normal weights. The anti-tTG-IgA antibody was positive in 6/1,213 (0.49%) adolescents. CONCLUSION: The seroprevalence of celiac disease was 0.49% in the investigated adolescents. Further studies are necessary to establish the prevalence of celiac disease in this age range. .
Responsável: BR1.1 - BIREME


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Texto completo SciELO Chile
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Id: lil-734856
Autor: Rodríguez, Graciela Rita; Zazzetti, Federico; da Representaçao, Silvia Raquel; Lencina, María Verónica; Barreira, Juan Carlos; Álvarez, Karina Elizabeth.
Título: Frecuencia de anticuerpos para diagnóstico de enfermedad celíaca en pacientes con enfermedades del tejido conectivo y artropatías inflamatorias / Serum anti endomysial and anti transglutaminase antibodies in patients with connective tissue diseases
Fonte: Rev. méd. Chile;142(12):1510-1516, dic. 2014. ilus, tab.
Idioma: es.
Resumo: Background: The detection of anti-transglutaminase IgA (tTG) and anti-endomysial (EMA) is used for screening of celiac disease (CD) with a sensitivity and specificity of 90 and 99% respectively. There is an association between CD and connective tissue diseases (CTD). Aim: To report the frequency of IgA tTG and EMA in patients with a definite diagnosis of CTD and inflammatory arthropathies (IA). Material and Methods: One hundred forty nine patients, aged 19 to 86 years (133 females) with CTD and IA were studied. tTG were determined by ELISA and EMA by indirect immunofluorescence. Results: Eight participants had at least one positive antibody (5.4%, confidence intervals (CI) = 1.8-9), six had both (4.0% CI = 0.9-7.2) and two had only tTG positive. An intestinal biopsy was performed in four of these participants, finding a marked villous atrophy in three and partial atrophy in one. Conclusions: Five percent of this group of patients with CTD or IA had positive antibodies for CD.
Responsável: CL1.1 - Biblioteca Central


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Id: lil-734416
Autor: Máspero, Jorge; Cabrera, Hugo; Ardusso, Ledit; De Gennaro, Mónica; Fernández Bussy, Ramón; Galimany, José; Galimberti, Daniel; Label, Marcelo; La Forgia, Marta; Medina, Iris; Neffen, Hugo; Troielli, Patricia.
Título: Guía Argentina de urticaria y angioedema
Fonte: Medicina (B.Aires);74(supl.1):1-53, ago. 2014. ilus, tab.
Idioma: es.
Resumo: Se actualiza el diagnóstico de la urticaria crónica (UC) y los conceptos, definiciones y sugerencias basados en la evidencia para su tratamiento. La urticaria ocurre en al menos 20% de la población en algún momento de la vida. Su etiología difiere en la forma aguda (menos de 6 semanas), y en la crónica. No es posible pronosticar si las formas agudas evolucionarán a UC, ya que todas son agudas al comienzo. La UC ocurre como espontánea (UCE) o inducible (UCI). El diagnóstico es sencillo, pero incluye un minucioso estudio para descartar diagnósticos diferenciales; para UCI son útiles las pruebas de provocación en la caracterización y manejo. Los estudios complementarios se deben limitar y orientar según sospecha clínica. El tratamiento se divide en tres enfoques: evitación, eliminación o tratamiento del estímulo desencadenante o de la causa, y tratamiento farmacológico. Recientemente éste se modificó, con empleo de antihistamínicos de segunda generación como primera línea y aumento de dosis de antihistamínicos H1 no sedantes, hasta 4 veces, como segunda línea. Los antihistamínicos son fundamentales para tratar la UC; sin embargo, un 40% de los pacientes no logra un buen control pese al aumento de dosis y requiere otro medicamento adicional. La evidencia más reciente considera que un grupo de fármacos puede utilizarse como tercera línea en estos casos, para mejorar la calidad de vida y limitar la toxicidad por el uso frecuente o crónico de esteroides sistémicos. Se recomiendan para esta tercera línea solo 3 fármacos: omalizumab, ciclosporina A o antileucotrienos.

This interdisciplinary paper summarizes the news in the diagnosis and treatment of chronic urticaria (CU), and provides concepts, definitions and evidence-based suggestions for its management. Urticaria occurs in at least 20% of the population at some point in their lives. Acute urticaria (less than 6 weeks' duration), differs from CU in its etiology, but the onset of this disease is always acute. CU may occur as spontaneous (SCU) or induced (ICU). The diagnosis is simple, although a careful evaluation is necessary for differential diagnosis. ICU´s diagnosis is mainly clinical, even if provocation tests can be useful. Supplementary studies should be limited and based on the clinical suspicion. Treatment may be divided into three approaches: avoidance, elimination or treatment of the cause, and pharmacological treatment. Recently treatment has been modified with the use of second-generation antihistamines as first-line and increased doses of nonsedating H1 antihistamines, up to 4 times, as second line. Antihistamines are essential to treat CU; however, 40% of patients do not achieve good control despite increased doses and require additional treatment. The most recent evidence indicates a group of drugs to be used as third line in these cases, to improve quality of life and to limit toxicity from frequent or chronic use of systemic steroids. Only 3 drugs are recommended as third line: omalizumab, cyclosporin A or anti-leukotrienes.
Responsável: AR1.2 - Instituto de Investigaciónes Epidemiológicas


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Id: lil-724702
Autor: León de González, Graciela; Cerdas Quesada, César.
Título: Grupo Cooperativo Iberoamericano de Medicina Transfusional. Programa Consulta al Experto. La prueba de antiglobulina directa: el dilema entre lo clínicamente significativo y lo no significativo / Ibero-American Cooperative Group on Transfusion Medicine. Consulting the Expert. The direct antiglobulin test: the dilemma between clinically significant and insignificant
Fonte: Rev. argent. transfus;39(1/2):55-61, 2013. ilus, tab.
Idioma: es.
Responsável: AR1.1 - Biblioteca Rafael Herrera Vegas


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Id: lil-700468
Autor: Díez, Libia Susana; Tamayo, Liliana María; Cardona, Ricardo.
Título: Omalizumab: opción terapéutica para la urticaria crónica espontánea de difícil control con vasculitis asociada, reporte de tres casos / Omalizumab: therapeutic option in chronic spontaneous urticaria difficult to control with associated vasculitis, report of three cases
Fonte: Biomédica (Bogotá);33(4):503-512, Dec. 2013. ilus, tab.
Idioma: es.
Resumo: Introducción. Aproximadamente el 50 % de los casos de urticaria crónica no mejoran adecuadamente con las dosis convencionales de antihistamínicos, por lo cual se han planteado múltiples opciones terapéuticas, entre las cuales el omalizumab es una herramienta novedosa que ahora cuenta con evidencia de alta calidad que soporta su uso en los casos difíciles, que mejora rápidamente el índice sintomático y el uso de medicamentos, y cuenta con un buen perfil de seguridad. Objetivo. Presentar tres casos de mujeres adultas con urticaria crónica espontánea de más de ocho años de evolución, que no mejoraron con el tratamiento con altas dosis de antihistamínicos, asociados a antileucotrienos e inmunomoduladores y en quienes se combinaban varios mecanismos fisiopatológicos: urticaria crónica espontánea con componente de autoinmunidad, componente de presión y urticaria vasculítica. Materiales y métodos. Se reportan los casos con sus respectivas evaluaciones clínicas y de laboratorio, los medicamentos usados y la respuesta después del inicio de omalizumab y se hace una revisión de la literatura científica sobre uso de este medicamento en la urticaria crónica. Resultados. En los tres casos presentados se obtuvo una mejoría completa de los síntomas tras el inicio del omalizumab. Conclusión. El omalizumab es una opción terapéutica exitosa en casos de urticaria crónica de difícil control con vasculitis asociada, cuando se han agotado las opciones propuestas por las guías internacionales.

Introduction: Approximately 50% of chronic urticaria cases do not respond adequately to conventional doses of antihistamines, so a number of other therapeutic options have been suggested. Among these, omalizumab is an innovative tool, which now has high-quality evidence that supports its use in difficult cases, rapidly improving the symptom index and the use of medications with a good safety profile. Objective: To report three cases of adult women with spontaneous chronic urticaria with an evolution of more than eight years, which did not improve with high doses of antihistamines and leukotriene receptor blockers, associated with immunomodulatory therapy in which several etiologic mechanisms were combined: chronic spontaneous urticaria with autoimmune and pressure components, and vasculitis. Materials and methods: We report the cases with their clinical and laboratory evaluations, used medication, the response after the start of omalizumab and we performed a review of the literature on the use of this drug in chronic urticaria. Results: In all the presented cases, we obtained complete improvement of symptoms after starting omalizumab. Conclusion: Omalizumab is a successful treatment option in cases of difficult to control chronic urticaria with associated vasculitis in which the options proposed by international guidelines have been exhausted.
Responsável: CO332 - Facultad de Medicina


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Texto completo SciELO Chile
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Id: lil-699689
Autor: Uribe S.M, Reinaldo; Suárez H, Felipe; Sandoval R, Patricio; Mellado T, Patricio.
Título: Síndrome anti-GQ1b: Descripción de cuatro pacientes y revisión de la literatura / Anti-GQ1b syndrome: Report of four cases
Fonte: Rev. méd. Chile;141(9):1211-1215, set. 2013. tab.
Idioma: es.
Resumo: Anti-GQ1b syndrome includes Miller Fisher Syndrome (MFS), Guillain Barré Syndrome (GBS), Bickerstaff`s brain stem encephalitis (BBE) and Acute Ophtamoplegia (AO). We report four patients aged 16 to 76 years, with anti-GQ1b syndrome. All presented with MFS, one of them evolved to GBS pharyngeal-cervical-brachial variant and other to GBS with BBE. All had a previous history of diarrhea or upper respiratory tract infection. All had positive anti-GQ1b serum antibodies. Both brain magnetic resonance imaging and cerebrospinal fluid analysis were normal. Electrophysiology studies were compatible with a demyelinating disease. Two patients needed airway protection with an orotracheal tube and developed dysautonomia. All four patients were treated with immunomodulation. On the sixth month follow-up, patients had only minimal alterations in the neurological examination.
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Cuba
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Id: lil-675502
Autor: Obregón Fuentes, Ana Margarita; Fernández Molina, Carmen; Rodríguez González, Islay; Rodríguez Olivera, Yaindrys; Echevarria Pérez, Eduardo; Rodríguez Silveira, José; Baños Morales, Yoanna.
Título: Detección de anticuerpos IgM contra leptospiras por un sistema comercial ELISA-IgM / Detection of IgM antibodies to leptospires by using a commercial ELISA-IgM system
Fonte: Rev. cuba. med. trop;65(2):202-210, abr.-jun. 2013.
Idioma: es.
Resumo: Introducción: la leptospirosis humana es una zoonosis sistémica y transmisible producida por bacterias invasivas del complejo Leptospira interrogans sensu lato. Numerosos métodos se utilizan para el serodiagnóstico de esta entidad clínica, dentro de los cuales se encuentra ELISA. Objetivos: aplicar un nuevo sistema serológico comercial de ELISA, para la pesquisa de anticuerpos IgM contra leptospiras e identificar los serogrupos de leptospiras presentes en los sueros positivos por este sistema. Métodos: de pacientes sospechosos de leptospirosis se estudiaron 27 y 61 sueros con anticuerpos contra leptospiras y sin estos, respectivamente. La técnica de microaglutinación con antígenos vivos (MAT) se utilizó como método de referencia. Los sistemas comerciales de SD Leptospira ELISA-IgM, SD flujo lateral Leptospira IgM y la hemoaglutinación indirecta (HAT) fueron comparativamente empleados. Resultados: 27 sueros con anticuerpos contra leptospiras resultaron positivos por SD Leptospira ELISA-IgM, 20 por SD flujo lateral Leptospira IgM y 9 por hemoaglutinación indirecta. De 61 sueros sin anticuerpos contra leptospiras, 9 y 8 resultaron positivos, respectivamente, por SD Leptospira ELISA-IgM y por SD flujo lateral Leptospira IgM. Los serogrupos Ballum y Canicola predominaron en los sueros positivos por el sistema comercial. La coincidencia entre SD Leptospira ELISA-IgM y la técnica de microaglutinación con antígenos vivos fue de 89,77 porciento. Conclusiones: SD Leptospira ELISA-IgM muestra una mayor positividad en los sueros estudiados, lo que avalaría su posible introducción en Cuba. Se confirma la amplia reactividad del antígeno usado en SD Leptospira ELISA-IgM, lo cual sugiere mantener una activa vigilancia de laboratorio sobre los serogrupos de leptospiras, a nivel nacional

Introduction: human leptospirosis is a communicable systemic zoonosis caused by the invasive bacteria Leptospira interrogans sensu lato complex. Numerous methods are used for serodiagnosis of this disease, including the ELISA tests. Objectives: to implement a new commercial serological ELISA test (SD Leptospira ELISA-IgM, SD Bioline, Korea) for screening of IgM antibodies and for identification of Leptospira serogroups in positive sera. Methods: twenty seven and sixty one sera, with/without IgM antibodies to leptospires, respectively, were studied. They had been taken from patients suspected of having leptospirosis. The microscopic agglutination test with live antigens (MAT) was the reference method. In addition, other commercial systems such as SD Leptospira IgM Lateral Flow and indirect hemagglutination (HAT) tests were comparatively used. Results: all the 27 sera with antibodies against Leptospira were positive according to SD Leptospira ELISA-IgM, 20 sera were found positive by SD Lateral Flow Igm test and 9 sera by the indirect HAT test. Of the 61 sera without antibodies to leptospires, 9 and 8 were positive by SD Leptospira ELISA-IgM and SD Leptospira IgM Lateral Flow test, respectively. Serogroups Canicola and Ballum were predominant in positive sera tested by the commercial system under evaluation. The agreement coefficient between SD Leptospira ELISA-IgM and MAT was 89.77 percent. Conclusions: SD Leptospira ELISA-IgM showed higher positivity rate than the other systems in the studied sera; this aspect would support its possible introduction in Cuba. The great reactivity of the antigen used in the system was confirmed, which indicates that active laboratory surveillance of leptospiral serogroups should be kept nationwide
Responsável: CU1.1 - Biblioteca Médica Nacional


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Texto completo SciELO Chile
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Id: lil-660025
Autor: García, Patricia; Bahamondes, Laura; Reyes, Paula; Román, Juan C; Poblete, Haydé; Balcells, M. Elvira.
Título: Comparación de adenosina deaminasa y detección de anticuerpos anti-antígeno A60 para el diagnóstico de meningitis tuberculosa / A comparative study for adenosine deaminase and anti-antigen A-60 antibodies detection for the diagnosis of tuberculous meningitis
Fonte: Rev. chil. infectol;29(5):521-526, oct. 2012. ilus, tab.
Idioma: es.
Resumo: Background: Diagnosis of tuberculous meningitis (TBM) is hampered by the lack of rapid and accurate diagnostic tools. We evaluated the immunological response to Mycobacterium tuberculosis anti-A60 antibodies in cerebrospinal fluid (CSF) in comparison to adenosine deaminase (ADA) determination, for the diagnosis of TBM. Methods: A total of 63 CSF samples were analyzed by indirect ELISA for the detection of anti- A60 IgG, IgM and IgA. These include samples from 17 patients with confirmed TBM and 46 control patients with other infections. Results: The mean individual anti-A60 IgM, IgG and IgA CSF antibody titers were significantly higher in TBM in comparison with control groups (p < 0.01). The best discriminatory CSF antibody for confirming TBM diagnosis was IgM, with an area under the receiver operating characteristic curve of 0.928 (95%CI 0.834-0.978), compared to 0.863 (95% CI: 0.752-0.936) for ADA testing (p = NS). The sensitivity of anti- A60 IgM CSF antibody titers (cutoff > 0.06 U/ml) was 94.1% compared to 88.2% for ADA (cutoff > 6.2 U/ml), p = NS. Both anti A60 IgM and ADA showed the same moderate specificity (80.4%). Two cases of TBM were correctly identified by anti-A60 IgM but missed by ADA. Conclusion: The ELISA test for anti-antigen A60 antibodies (IgM) is a rapid and sensitive tool for the rapid diagnosis of TBM that can be a complement to ALDA determination. The specificity of both tests is still a limitation in TBM diagnosis.

Antecedentes: El diagnóstico de meningitis tuberculosa (MTBC) se ve limitado por la ausencia de técnicas diagnósticas rápidas y precisas en líquido cefalorraquídeo (LCR). En este estudio evaluamos la respuesta inmunoló-gica de anticuerpos anti-antígeno A60 de Mycobacterium tuberculosis en LCR en comparación a la determinación de adenosina deaminasa (ADA). Métodos: Un total de 63 muestras de LCR fueron estudiadas mediante ELISA indirecto para detección de IgG, IgM e IgA anti-A60. Estas muestras incluyeron 17 casos de MTBC confirmada y 46 controles con otras infecciones. Resultados: Los títulos de IgG, IgM e IgA anti A-60 resultaron significativamente superiores en casos de MTBC versus controles (p > 0,01). El anticuerpo con mej or poder discriminatorio resultó IgM, con un área bajo la curva ROC de 0,928 (95%IC 0,8340,978), comparado a 0,863 (95% IC: 0,752-0,936) para ADA (p = NS). La sensibilidad de IgM anti-A60 (nivel de corte > 0,06 U/ml) fue de 94,1% versus 88,2% para ADA (nivel de corte > 6,2 U/ml), p = NS. Ambos IgM anti-A60 y ADA presentaron la misma especificidad baja-moderada (80,4%). Dos casos de MMTBC fueron correctamente identificados por IgM anti-A60 pero no por ALDA. Conclusión: La detección de anticuerpos anti-A60 (IgM) puede ser de ayuda en el diagnostico de MTBC en forma complementaria a la determinación de ALDA. La baja especificidad de ambos tests constituye su principal limitante.
Responsável: CL1.1 - Biblioteca Central



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