Desarrollo de los ritmos biológicos en el recién nacido.

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Bibliographic Details
Title:	Desarrollo de los ritmos biológicos en el recién nacido.
Alternate Title:	Development of biological rhythms in the newborn child.
Authors:	Ángeles-Castellanos, Manuel¹, Ruiz, Samuel Vázquez², Palma, Madahi¹, Ubaldo, Laura¹, Cervantes, Gabriela¹, Rojas-Granados, Adelina¹, Escobar, Carolina¹
Source:	Revista de la Facultad de Medicina de la UNAM. may/jun2013, Vol. 56 Issue 3, p26-35. 10p.
Subjects:	BIOLOGICAL rhythms, NEWBORN infant health, GESTATIONAL age, HUMAN physiology, SLEEP-wake cycle, DEVELOPMENTAL biology
Abstract (English):	Circadian rhythms are endogenously generated with a period length of approximately 24 hours. Studies performed during the past decade indicate that the circadian timing system develops prenatally and the suprachiasmatic nucleus, considered the site of the circadian clock, is present by midgestation in primates. Recent evidence also shows that the circadian system of primate infants is responsive to light since very early stages of development and that low-intensity lighting can regulate the developing clock. After birth, there is progressive maturation of the circadian system outputs, with pronounced rhythms on sleep-wake phenomena and hormone secretion; showing the importance of photic regulation on infants. Thus, exposure of premature infants to light/dark cycles results in the fast establishment of rest-activity patterns, which are in phase with the light-dark cycle. The continual study of circadian system development and its influence on human physiology and illness, it is foreseen that the application of circadian biology will become increasingly important for neonatal care. [ABSTRACT FROM AUTHOR]
Abstract (Spanish):	Los ritmos circadianos se generan de forma endógena con un período de aproximadamente 24 h. Estudios realizados durante la última década indican que el sistema circadiano se desarrolla antes del nacimiento y que el núcleo supraquiasmático, estructura que se considera el reloj circadiano del mamífero, está presente en los primates desde la mitad de la gestación. Evidencias recientes muestran que el sistema circadiano de los infantes es sensible a la luz desde etapas muy tempranas del desarrollo; también se ha propuesto que la iluminación de baja intensidad puede regular el reloj en desarrollo. Después del nacimiento se presenta una maduración progresiva de las salidas del sistema circadiano con marcados ritmos en los fenómenos de sueño-vigilia y secreción de hormonas. Estos hechos expresan la importancia de la regulación fótica circadiana en los lactantes. Así, la exposición de los bebés prematuros a ciclos de luz/oscuridad tiene como resultado un rápido establecimiento de patrones de actividad/reposo, los que se encuentran en el ciclo luz-oscuridad. Con el continuo estudio del desarrollo del sistema circadiano y la influencia sobre la fisiología humana y la enfermedad, se prevé que la aplicación de la biología circadiana se convertirá en un componente cada vez más importante en la atención neonatal. [ABSTRACT FROM AUTHOR]
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Database:	MedicLatina

Description
Abstract:	Circadian rhythms are endogenously generated with a period length of approximately 24 hours. Studies performed during the past decade indicate that the circadian timing system develops prenatally and the suprachiasmatic nucleus, considered the site of the circadian clock, is present by midgestation in primates. Recent evidence also shows that the circadian system of primate infants is responsive to light since very early stages of development and that low-intensity lighting can regulate the developing clock. After birth, there is progressive maturation of the circadian system outputs, with pronounced rhythms on sleep-wake phenomena and hormone secretion; showing the importance of photic regulation on infants. Thus, exposure of premature infants to light/dark cycles results in the fast establishment of rest-activity patterns, which are in phase with the light-dark cycle. The continual study of circadian system development and its influence on human physiology and illness, it is foreseen that the application of circadian biology will become increasingly important for neonatal care. [ABSTRACT FROM AUTHOR]
ISSN:	00261742