The hindlimb hyperextension associated to the Urogenital response in newborn undefed rats
Arch. med. res
;
29(2): 125-32, abr.-jun. 1998. tab, ilus
Artículo
en Inglés
| LILACS
| ID: lil-232626
ABSTRACT
Background. The aim of the study was to investigate how neonatal undernutrition interacts with mother-infant relationship to interfere with the expression of the urogenital response in the newborn. Methods. The hyperextensive reflex components associated to the urogenital response (HUR) were measured between postnatal days 1-21, in control and neonatally undernourished rats with or without fullness of the bladder. Results. In Experiment 1, both male and female underfed rats with different degress of bladder fullness exhibited an increment in HUR latency and vertical hindlimb displacement, reduced transversal separation and prolonged performance of hindlimb relaxation. Experiment 2 was performed in rats after urine elicitation provoked only reduced hindlimb transversal separation in males, and prolonged latency to HUR in females. Discussion. These findings may be related to the vulneability to neonatal undernutrition of the maturational processes which take place in the spinal cord, the condition of the bladder, and hinleg muscle maturation during this period of life. Conclusions. Data suggest that neonatal undernutrition may play a role in mother-infant interaction by interfering with HUR responses to maternal anogenital licking of pups
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Índice:
LILACS (Américas)
Asunto principal:
Reflejo
/
Sistema Urogenital
/
Rango del Movimiento Articular
/
Ratas Wistar
/
Extremidades
/
Miembro Posterior
/
Animales Recién Nacidos
Tipo de estudio:
Factores de riesgo
Límite:
Animales
Idioma:
Inglés
Revista:
Arch. med. res
Asunto de la revista:
Medicina
Año:
1998
Tipo del documento:
Artículo
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