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Autor Alejandro Daniel Velásquez Urzola
Comentario :
Médico Pediatra con Énfasis en Endocrinología, Hospital Pablo Tobón Uribe
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Documentos disponibles escritos por este autor (3)
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Collision tumors of the sella: Craniopharyngioma and silent pituitary adenoma subtype 3: Case report / Luis Vicente Syro Moreno ; Alejandro Daniel Velásquez Urzola
Título : Collision tumors of the sella: Craniopharyngioma and silent pituitary adenoma subtype 3: Case report Tipo de documento : documento electrónico Autores : Luis Vicente Syro Moreno, ; Alejandro Daniel Velásquez Urzola, Fecha de publicación : 2009 Títulos uniformes : Endocrine Pathology Idioma : Inglés (eng) Palabras clave : sella turcica collision tumors craniopharyngioma silent pituitary adenoma subtype 3 Resumen : Collision tumors of the sella turcica are rare and consist mainly of more than one type of pituitary adenoma, usually a corticotropin- and a prolactin-producing adenoma. The association of a craniopharyngioma and a pituitary adenoma is rare. Herein, we report the first case of an association between craniopharyngioma and silent pituitary adenoma subtype 3. It involved a 12-year-old boy who underwent a frontal craniotomy with surgical removal of a calcified sellar tumor. Histology revealed an adamantinomatous craniopharyngioma; however, by electron microscopy, there was conclusive evidence of adenoma cells showing the ultrastructural features of silent pituitary adenoma subtype 3. Endocrine and neuroimaging as well as detailed immunohistochemical and ultrastructural studies were undertaken. The literature is also reviewed. Mención de responsabilidad : Olga Moshkin, Bernd W Scheithauer, Luis V Syro, Alejandro Velasquez, Eva Horvath, Kalman Kovacs Referencia : Endocr Pathol. Spring 2009;20(1):50-5. DOI (Digital Object Identifier) : 10.1007/s12022-009-9065-3 PMID : 19238590 En línea : https://link.springer.com/article/10.1007/s12022-009-9065-3 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4456 Collision tumors of the sella: Craniopharyngioma and silent pituitary adenoma subtype 3: Case report [documento electrónico] / Luis Vicente Syro Moreno, ; Alejandro Daniel Velásquez Urzola, . - 2009.
Obra : Endocrine Pathology
Idioma : Inglés (eng)
Palabras clave : sella turcica collision tumors craniopharyngioma silent pituitary adenoma subtype 3 Resumen : Collision tumors of the sella turcica are rare and consist mainly of more than one type of pituitary adenoma, usually a corticotropin- and a prolactin-producing adenoma. The association of a craniopharyngioma and a pituitary adenoma is rare. Herein, we report the first case of an association between craniopharyngioma and silent pituitary adenoma subtype 3. It involved a 12-year-old boy who underwent a frontal craniotomy with surgical removal of a calcified sellar tumor. Histology revealed an adamantinomatous craniopharyngioma; however, by electron microscopy, there was conclusive evidence of adenoma cells showing the ultrastructural features of silent pituitary adenoma subtype 3. Endocrine and neuroimaging as well as detailed immunohistochemical and ultrastructural studies were undertaken. The literature is also reviewed. Mención de responsabilidad : Olga Moshkin, Bernd W Scheithauer, Luis V Syro, Alejandro Velasquez, Eva Horvath, Kalman Kovacs Referencia : Endocr Pathol. Spring 2009;20(1):50-5. DOI (Digital Object Identifier) : 10.1007/s12022-009-9065-3 PMID : 19238590 En línea : https://link.springer.com/article/10.1007/s12022-009-9065-3 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4456 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000956 AC-2009-044 Archivo digital Producción Científica Artículos científicos Disponible Clinical and immunological characteristics of type 1 diabetes mellitus in a northwestern Colombian population / Verónica Abad Londoño ; Alejandro Daniel Velásquez Urzola
Título : Clinical and immunological characteristics of type 1 diabetes mellitus in a northwestern Colombian population Tipo de documento : documento electrónico Autores : Verónica Abad Londoño, ; Alejandro Daniel Velásquez Urzola, Fecha de publicación : 2006 Títulos uniformes : Diabetes Research and Clinical Practice Idioma : Inglés (eng) Palabras clave : Type 1 diabetes GADA IA-2A IAA Colombia Resumen : We underwent a project aimed to define the clinical and immunological characteristics of type 1 diabetes (T1D) in a Colombian population. This was a multicenter and cross-sectional study. Patients were systematically interviewed and their medical records reviewed, using a questionnaire that sought information about demographic, clinical and immunological characteristics. Glutamic acid decarboxylase antibodies (GADA), tyrosine phosphatase antibodies (IA-2A) and insulin antibodies (IAA) were examined by radioimmunoassay. There were 107 patients with T1D. Male:female ratio was 1:1. Half of the patients developed diabetes ketoacidosis at onset. GADA, IA-2A, and IAA were detected in 45%, 40%, and 69% of the cases, respectively. GADA positive patients were older and had a less duration of disease than patients without these autoantibodies ( p Mención de responsabilidad : G J Tobon, A Arango, V Abad, J García, H Cuervo, A Velásquez, I D Angel, P Vega, A Abad, J-M Anaya Referencia : Diabetes Res Clin Pract. 2006 May;72(2):170-5. DOI (Digital Object Identifier) : 10.1016/j.diabres.2005.10.016 PMID : 16325957 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0168822705004225 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4420 Clinical and immunological characteristics of type 1 diabetes mellitus in a northwestern Colombian population [documento electrónico] / Verónica Abad Londoño, ; Alejandro Daniel Velásquez Urzola, . - 2006.
Obra : Diabetes Research and Clinical Practice
Idioma : Inglés (eng)
Palabras clave : Type 1 diabetes GADA IA-2A IAA Colombia Resumen : We underwent a project aimed to define the clinical and immunological characteristics of type 1 diabetes (T1D) in a Colombian population. This was a multicenter and cross-sectional study. Patients were systematically interviewed and their medical records reviewed, using a questionnaire that sought information about demographic, clinical and immunological characteristics. Glutamic acid decarboxylase antibodies (GADA), tyrosine phosphatase antibodies (IA-2A) and insulin antibodies (IAA) were examined by radioimmunoassay. There were 107 patients with T1D. Male:female ratio was 1:1. Half of the patients developed diabetes ketoacidosis at onset. GADA, IA-2A, and IAA were detected in 45%, 40%, and 69% of the cases, respectively. GADA positive patients were older and had a less duration of disease than patients without these autoantibodies ( p Mención de responsabilidad : G J Tobon, A Arango, V Abad, J García, H Cuervo, A Velásquez, I D Angel, P Vega, A Abad, J-M Anaya Referencia : Diabetes Res Clin Pract. 2006 May;72(2):170-5. DOI (Digital Object Identifier) : 10.1016/j.diabres.2005.10.016 PMID : 16325957 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0168822705004225 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=4420 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000920 AC-2006-018 Archivo digital Producción Científica Artículos científicos Disponible Familial clustering of autoimmune diseases in patients with type 1 diabetes mellitus / Alejandro Daniel Velásquez Urzola
Título : Familial clustering of autoimmune diseases in patients with type 1 diabetes mellitus Tipo de documento : documento electrónico Autores : Alejandro Daniel Velásquez Urzola, Fecha de publicación : 2006 Títulos uniformes : Journal of Autoimmunity Idioma : Inglés (eng) Palabras clave : Aggregation autoimmunity type 1 diabetes mellitus hypothyroidism genetics Resumen : We investigated the familial aggregation of autoimmune diseases (AIDs) among first-degree relatives (FDR) of patients with type 1 diabetes mellitus (T1D). Relatives of 98 T1D patients defined according to the guidelines diagnosis of the American Diabetes Association and 113 matched controls without any AID, were interviewed using a questionnaire that sought information about demographic and medical characteristics including a list of 18 AIDs. Genetic analysis was performed using the program ASSOC and by calculating recurrent risk ratios. In cases, 25.5% of the families had at least one member having an AID, while in controls there were 9% (odds ratio [OR]: 3.96, 95% confidence interval [CI] 1⁄4 1.74e9.0, p 1⁄4 0.0006). An AID was registered in 8.3% of 312 FDR of patients as compared with 2.4% of 362 FDR in controls (OR: 3.56, 95% CI 1⁄4 1.64e7.73, p 1⁄4 0.0008). The most frequent AIDs registered in FDR of cases were autoimmune thyroid disease (AITD) and T1D, which disclosed coefficients of aggregation. These results indicate that AIDs cluster within families of T1D patients adding further evidence to consider that clinically different autoimmune phenotypes may share common susceptibility gene variants, which may act pleiotropically as risk factors for autoimmunity. Mención de responsabilidad : Juan-Manuel Anaya, John Castiblanco, Gabriel J Tobón, Jorge García, Verónica Abad, Héctor Cuervo, Alejandro Velásquez, Ivan D Angel, Patricia Vega, Alvaro Arango Referencia : J Autoimmun. 2006 May;26(3):208-14. DOI (Digital Object Identifier) : 10.1016/j.jaut.2006.01.001 PMID : 16503115 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0896841106000096 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3439 Familial clustering of autoimmune diseases in patients with type 1 diabetes mellitus [documento electrónico] / Alejandro Daniel Velásquez Urzola, . - 2006.
Obra : Journal of Autoimmunity
Idioma : Inglés (eng)
Palabras clave : Aggregation autoimmunity type 1 diabetes mellitus hypothyroidism genetics Resumen : We investigated the familial aggregation of autoimmune diseases (AIDs) among first-degree relatives (FDR) of patients with type 1 diabetes mellitus (T1D). Relatives of 98 T1D patients defined according to the guidelines diagnosis of the American Diabetes Association and 113 matched controls without any AID, were interviewed using a questionnaire that sought information about demographic and medical characteristics including a list of 18 AIDs. Genetic analysis was performed using the program ASSOC and by calculating recurrent risk ratios. In cases, 25.5% of the families had at least one member having an AID, while in controls there were 9% (odds ratio [OR]: 3.96, 95% confidence interval [CI] 1⁄4 1.74e9.0, p 1⁄4 0.0006). An AID was registered in 8.3% of 312 FDR of patients as compared with 2.4% of 362 FDR in controls (OR: 3.56, 95% CI 1⁄4 1.64e7.73, p 1⁄4 0.0008). The most frequent AIDs registered in FDR of cases were autoimmune thyroid disease (AITD) and T1D, which disclosed coefficients of aggregation. These results indicate that AIDs cluster within families of T1D patients adding further evidence to consider that clinically different autoimmune phenotypes may share common susceptibility gene variants, which may act pleiotropically as risk factors for autoimmunity. Mención de responsabilidad : Juan-Manuel Anaya, John Castiblanco, Gabriel J Tobón, Jorge García, Verónica Abad, Héctor Cuervo, Alejandro Velásquez, Ivan D Angel, Patricia Vega, Alvaro Arango Referencia : J Autoimmun. 2006 May;26(3):208-14. DOI (Digital Object Identifier) : 10.1016/j.jaut.2006.01.001 PMID : 16503115 En línea : https://linkinghub.elsevier.com/retrieve/pii/S0896841106000096 Enlace permanente : https://hospitalpablotobon.cloudbiteca.com/pmb/opac_css/index.php?lvl=notice_display&id=3439 Reserva
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Código de barras Número de Ubicación Tipo de medio Ubicación Sección Estado DD000006 AC-2006-001 Archivo digital Producción Científica Artículos científicos Disponible