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Long‐lasting effects of perinatal asphyxia on exploration, memory and incentive downshift
Author(s) -
Galeano Pablo,
Calvo Eduardo Blanco,
Oliveira Diêgo Madureira,
Cuenya Lucas,
Kamenetzky Giselle Vanesa,
Mustaca Alba Elisabeth,
Barreto George Emilio,
GiraldezAlvarez Lisandro Diego,
Milei José,
Capani Francisco
Publication year - 2011
Publication title -
international journal of developmental neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 88
eISSN - 1873-474X
pISSN - 0736-5748
DOI - 10.1016/j.ijdevneu.2011.05.002
Subject(s) - open field , asphyxia , morris water navigation task , perinatal asphyxia , anesthesia , medicine , psychology , elevated plus maze , physiology , anxiety , developmental psychology , hippocampus , psychiatry
Perinatal asphyxia remains as one of the most important causes of death and disability in children, without an effective treatment. Moreover, little is known about the long‐lasting behavioral consequences of asphyxia at birth. Therefore, the main aim of the present study was to investigate the motor, emotional and cognitive functions of adult asphyctic rats. Experimental subjects consisted of rats born vaginally (CTL), by cesarean section (C+), or by cesarean section following 19 min of asphyxia (PA). At three months of age, animals were examined in a behavioral test battery including elevated plus maze, open field, Morris water maze, and an incentive downshift procedure. Results indicated that groups did not differ in anxiety‐related behaviors, although a large variability was observed in the asphyctic group and therefore, the results are not completely conclusive. In addition, PA and C+ rats showed a deficit in exploration of new environments, but to a much lesser extent in the latter group. Spatial reference and working memory impairments were also found in PA rats. Finally, when animals were downshifted from a 32% to a 4% sucrose solution, an attenuated suppression of consummatory behavior was observed in PA rats. These results confirmed and extended those reported previously about the behavioral alterations associated with acute asphyxia around birth.