Treating age-related changes in somatotrophic hormones, sleep, and cognition
- PMID: 22034239
- PMCID: PMC3181657
- DOI: 10.31887/DCNS.2001.3.3/mvvitiello
Treating age-related changes in somatotrophic hormones, sleep, and cognition
Abstract
Many of the body's systems that function to maintain optimal health and well-being decline with advancing age. Aerobic capacity, muscle mass, and strength all progressively decline. Significant sleep disturbances are associated with increases in morbidity and mortality. Cognition declines, impacting an older individual's ability to function independently. Interventions that could at least stabilize or possibly improve functional capacity, sleep quality, and cognitive function have the theoretical potential to prolong an older individual's ability to live independently, and interest in their possible utility is growing rapidly. One such intervention may be stimulation of the "somatotrophic" axis via growth hormone-releasing hormone (GHRH). Here we review the evidence for such somatotrophic interventions. We also report preliminary findings on the effects of chronic GHRH treatment on the somatotrophic hormones, body composition, functional status, sleep, and cognitive function of healthy older men and women from two major GHRH intervention studies, one recently completed and the other ongoing.
Muchos de los sistemas del organismo que funcionan para mantener la salud y el bienestar en el óptimo declinan a medida que avanza la edad. La capacidad aeróbica, y la masa y la fuerza muscular declinan progresivamente. Las alteraciones significativas del sueño se asocian con aumentos en la morbilidad y en la mortalidad, La cognición declina, afectando la capacidad del individuo mayor para funcíonar independientemente. Las intervenciones que puedan al menos estabilizar o posiblemente mejorar la capacidad funcional, la calidad del sueño y la función cognitiva tienen teóricamente el potencial de prolongar la capacidad de un individuo mayor para vivir independientemente, por lo que el interés en su posible utilidad está creciendo rápidamente. Una de tales intervenciones puede ser la estimulación del eje “somatotrófico” a través de la hormona liberadora de hormona del crecimiento (GHRH), Aquí nosotros revisamos la evidencia de tales intervenciones somatotróficas. Nosotros también damos cuenta, a partir de dos grandes estudios de intervención con GHRH (uno recientemente terminado y otro en curso), acerca de los hallazgos preliminares de los efectos del tratamiento crónico con GHRH sobre las hormonas somatotróficas, la composición del organismo, el estado funcional, el sueño, y la función cognitiva del hombre y la mujer mayores sanos.
La plupart des systèmes du corps humain dont la fonction est de maintenir un état optimal de bonne santé et de bien-être déclinent avec l'âge. La capacité aérobie, la masse et la force musculaires déclinent progressivement. Les troubles significatifs du sommeil sont associés à une augmentation de la mortalité et de la morbidité. Les capacités cognitives diminuent, retentissant sur l'autonomie des personnes âgées. Les interventions thérapeutiques susceptibles de stabiliser voire d'améliorer la capacité fonctionnelle, la qualité du sommeil et les fonctions cognitives ont en théorie le pouvoir de prolonger la capacité des sujets âgés de vivre de façon indépendante et suscitent de ce fait un intérêt croissant. La stimulation de l'axe somatotrope par l'intermédiaire de la somatocrinine (growth hormone-releasing hormone, GHRH) constitue l'une des modalités d'intervention possibles. Cet article fait le point sur les données concernant ce type de traitement. Nous rapportons également les résultats préliminaires de deux études, l'une en cours et l'autre récemment achevée, portant sur les effets du traitement chronique par GHRH sur les hormones somatotropes, la composition corporelle, l'état fonctionnel, le sommeil et la fonction cognitive d'hommes et de femmes âgés en bonne santé.
Keywords: aging; chronic GHRH treatment; cognition; growth hormone-releasing hormone (GHRH); sleep; somatotrophic hormone.
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