Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Más filtros











Intervalo de año de publicación
1.
Rev Endocr Metab Disord ; 22(1): 59-70, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-33047268

RESUMEN

The Ecuadorian cohort of subjects with LS has taught us valuable lessons since the late 80's. We have learned about migration of Sephardic Jews to our country, their isolation in remote hamlets and further inbreeding. These geographical, historical and social determinants induced dissemination of a growth hormone (GH) receptor mutation which widely occurred in those almost inaccessible villages. Consequently, the world's largest Laron syndrome (LS) cohort emerged in Loja and El Oro, two of the southern provinces of Ecuador. We have been fortunate to study these patients since 1987. New clinical features derived from GH insensitivity, their growth patterns as well as treatment with exogenous insulin-like growth factor I (IGF-I) have been reported. Novel biochemical characteristics in the field of GH insensitivity, IGFs, IGF binding proteins (BP) and their clinical correlates have also been described. In the last few years, studies on the morbidity and mortality of Ecuadorian LS adults surprisingly demonstrated that despite obesity, they had lower incidence of diabetes and cancer than their relatives. These events were linked to their metabolic phenotype of elevated but ineffective GH concentrations and low circulating IGF-I and IGFBP-3. It was also noted that absent GH counter-regulation induces a decrease in insulin resistance (IR), which results in low but highly efficient insulin levels which properly handle metabolic substrates. We propose that the combination of low IGF-I signaling, decreased IR, and efficient serum insulin concentrations are reasonable explanations for the diminished incidence of diabetes and cancer in these subjects.


Asunto(s)
Síndrome de Laron , Ecuador/epidemiología , Humanos , Proteínas de Unión a Factor de Crecimiento Similar a la Insulina , Factor I del Crecimiento Similar a la Insulina/metabolismo , Síndrome de Laron/epidemiología , Síndrome de Laron/genética , Fenotipo , Receptores de Somatotropina/genética
2.
Metro cienc ; 26(1): 21-26, jun. 2018.
Artículo en Español | LILACS | ID: biblio-981562

RESUMEN

La fístula aortoentérica (FAE) es la solución de continuidad entre la arteria aorta y una porción del sistema digestivo; su incidencia va del 0.04 al 0.07% y su mortalidad alcanza hasta 79%, lo que la convierte en un verdadero reto a la hora de establecer su manejo por la efectividad con la cual se debe efectuar su manejo. Existen diversas manifestaciones de la enfermedad que pueden distraer su diagnóstico, sin embargo es común el dolor abdominal y el sangrado digestivo acompañado o no de signos de inestabilidad hemodinámica. Actualmente, no existe un consenso para el manejo de las FAE; sin embargo, los pilares fundamentales son: control de la infección, reparación vascular y reconstrucción entérica; para esto es indispensable un equipo multidisciplinario de gran experiencia. Se presenta el caso de una paciente de 76 años con varias comorbilidades, portadora de bypass aorto-bi-femoral por enfermedad aterosclerótica de la aorta. Acudió por dolor abdominal, sangrado digestivo alto e inestabilidad hemodinámica. Luego de la valoración inicial fue diagnosticada de FAE y sepsis. Tomando en cuenta las recomendaciones mundiales, se realizó un procedimiento en 2 tiempos que incluían: a) reparo vascular: bypass extra-anatómico, exéresis de prótesis y cierre del muñón aórtico y, b) reparo entérico (por la magnitud anatómica de la lesión intestinal y luego de haber descartado la factibilidad de una rafia o derivación intestinal): como último recurso un procedimiento de Whipple


Aortoenteric fistulas are defined as a communication between the aorta and a portion of the digestive system. This pathology has a 0.04-0.07% incidence with a mortality rate of up to 79% making it's management a true challenge. Clinical manifestations vary thus common symptoms include abdominal pain and digestive bleeding and may or may not include signs of hemodynamic instability. Until now there is no consensus regarding the management of FAE hence the pillars of treatment include: infection control, vascular reparation and enteric reconstruction. A multidisciplinary team is imperative. We are presenting the case of a 76-year-old female with various comorbidities and a history of an aortic bifemoral bypass reconstruction due to aortic sclerosis disease; that presented with abdominal pain, upper digestive bleeding and hemodynamic instability. She was diagnosed with a FAE and sepsis. Taking into consideration international recommendations she was treated with a single procedure in two times. For the vascular correction: an extra-anatomical bypass; removal of previous prosthetic aortic implant and closure of the aortic stump. Due to the magnitude of the intestinal damage simple closure and intestinal derivation were discarded as options for enteric repair and a Whipple procedure was used as a last resource.


Asunto(s)
Humanos , Femenino , Anciano , Enfermedades de la Aorta , Derivación Gástrica , Fístula del Sistema Digestivo , Fístula Intestinal , Dolor Abdominal , Sepsis , Hemorragia Gastrointestinal
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA