The hindlimb hyperextension associated to the Urogenital response in newborn undefed rats
Arch. med. res
; 29(2): 125-32, abr.-jun. 1998. tab, ilus
Article
em En
| LILACS
| ID: lil-232626
Biblioteca responsável:
MX1.1
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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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Reflexo
/
Sistema Urogenital
/
Amplitude de Movimento Articular
/
Ratos Wistar
/
Extremidades
/
Membro Posterior
/
Animais Recém-Nascidos
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Arch. med. res
Assunto da revista:
MEDICINA
Ano de publicação:
1998
Tipo de documento:
Article