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Hipoglucemia reactiva y deficiencia de glucagón de células A ("pancreático") en el adulto
JAMA
|November 21, 1980
Resumen
Los adultos con hipoglucemia reactiva pueden tener una función insuficiente de las células A pancreáticas, indicada por niveles más bajos de glucagón en ayunas. Esta insuficiencia de células A podría ser un factor que contribuye a la hipoglucemia reactiva en adultos.
Área de la Ciencia:
- Endocrinología Endocrinología.
- Trastornos metabólicos Los trastornos metabólicos son trastornos metabólicos que se producen en el cuerpo.
- Regulación de las hormonas.
Sus antecedentes:
- La hipoglucemia reactiva es una condición caracterizada por niveles bajos de glucosa en sangre después de las comidas.
- El papel de la función de las células alfa pancreáticas (células A) en la hipoglucemia reactiva no se entiende completamente.
Objetivo del estudio:
- Para investigar la función de las células A pancreáticas en pacientes con hipoglucemia reactiva.
- Para comparar los patrones de secreción hormonal entre pacientes con hipoglucemia reactiva y sujetos normales.
Principales métodos:
- Se midió la glucosa sérica, la insulina, el glucagón (célula A y total), la hormona del crecimiento, el cortisol, la triiodotironina y la tiroxina.
- Se evaluaron los niveles hormonales en ayunas y la respuesta a la glucosa oral, la arginina y una comida de carne.
- Se incluyeron 31 pacientes sintomáticos (7 con hipoglucemia reactiva) y 11 sujetos normales.
Principales resultados:
- Los pacientes con hipoglucemia reactiva (grupo 2) tenían niveles de glucagón sérico de células A en ayunas (IRGA) significativamente más bajos en comparación con los sujetos normales (grupo 1).
- La glucosa oral, la arginina y la carne estimulan los niveles totales de glucagón (IRGT) de manera similar en ambos grupos.
- La secreción de insulina, hormona del crecimiento, cortisol, triiodotironina y tiroxina no difería significativamente entre los grupos.
Conclusiones:
- La insuficiencia de células A pancreáticas puede contribuir al desarrollo de hipoglucemia reactiva en adultos.
- Los niveles más bajos de glucagón en ayunas en pacientes con hipoglucemia reactiva sugieren una disminución de la reserva de células A.
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