Consulta: creatorFacets:"Lucion,A.B."
Registros recuperados: 8
Data/hora: 07/06/2024 02:12:18

Pup age and aggressive behavior in lactating rats
Provedor de dados: 56
Autores: Giovenardi,M.; Consiglio,A.R.; Barros,H.M.T.; Lucion,A.B.
High levels of aggressive behaviors against intruders in the nest area are displayed by female rats during the first 10 days after delivery, declining thereafter to very low levels, even though lactation continues. Cross-fostering experiments were undertaken to test the hypothesis that pup age may affect aggression in lactating rats. The behavior of females on the 8th day after delivery when raising fostered 8-day-old pups was compared to that of females on the 8th postpartum day raising older pups (18 days old) for the last 5 days, and females on the 18th day after delivery raising fostered 18-day-old pups were compared to females in the same postpartum period nursing younger pups (8 days of age at the time of the maternal aggression test) for 5 days. Pup...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maternal aggression; Mother-infant interaction; Cross-fostering; Prolactin.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000900015

Effect of 5-HT1B receptor agonists injected into the prefrontal cortex on maternal aggression in rats
Provedor de dados: 56
Autores: Veiga,C.P.; Miczek,K.A.; Lucion,A.B.; Almeida,R.M.M. de.
Serotonin (5-HT1B) receptors play an essential role in the inhibition of aggressive behavior in rodents. CP-94,253, a 5-HT1B receptor agonist, can reduce aggression in male mice when administered directly into the ventro-orbitofrontal (VO) prefrontal cortex (PFC). The objective of the current study was to assess the effects of two selective 5-HT1B receptor agonists (CP-94,253 and CP-93,129), microinjected into the VO PFC, on maternal aggressive behavior after social instigation in rats. CP-94,253 (0.56 µg/0.2 µL, N = 8, and 1.0 µg/0.2 µL, N = 8) or CP-93,129 (1.0 µg/0.2 µL, N = 9) was microinjected into the VO PFC of Wistar rats on the 9th day postpartum and 15 min thereafter the aggressive behavior by the resident female against a male intruder was...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Prefrontal cortex; 5-HT receptors; Serotonin; Maternal behavior; Aggression.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000600012

Neonatal handling induces anovulatory estrous cycles in rats
Provedor de dados: 56
Autores: Gomes,C.M.; Frantz,P.J.; Sanvitto,G.L.; Anselmo-Franci,J.A.; Lucion,A.B.
Since previous work has shown that stimulation early in life decreases sexual receptiveness as measured by the female lordosis quotient, we suggested that neonatal handling could affect the function of the hypothalamus-pituitary-gonadal axis. The effects of neonatal handling on the estrous cycle and ovulation were analyzed in adult rats. Two groups of animals were studied: intact (no manipulation, N = 10) and handled (N = 11). Pups were either handled daily for 1 min during the first 10 days of life or left undisturbed. At the age of 90 days, a vaginal smear was collected daily at 9:00 a.m. and analyzed for 29 days; at 9:00 a.m. on the day of estrus, animals were anesthetized with thiopental (40 mg/kg, ip), the ovaries were removed and the oviduct was...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Stress; Neonatal handling; Estrous cycle; Ovulation; Female rat.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001000010

Neonatal handling and the expression of immunoreactivity to tyrosine hydroxylase in the hypothalamus of adult male rats
Provedor de dados: 56
Autores: Hermel,E.E.S.; Severino,G.S.; Cecconello,A.L.; Pereira,F.M.; Sanvitto,G.L.; Lucion,A.B.
Neonatal handling has long-lasting effects on behavior and stress reactivity. The purpose of the present study was to investigate the effect of neonatal handling on the number of dopaminergic neurons in the hypothalamic nuclei of adult male rats as part of a series of studies that could explain the long-lasting effects of neonatal stimulation. Two groups of Wistar rats were studied: nonhandled (pups were left undisturbed, control) and handled (pups were handled for 1 min once a day during the first 10 days of life). At 75-80 days, the males were anesthetized and the brains were processed for immunohistochemistry. An anti-tyrosine hydroxylase antibody and the avidin-biotin-peroxidase method were used. Tyrosine hydroxylase-immunoreactive (TH-IR) neurons were...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Stress; Neonatal stimulation; Dopamine; Immunohistochemistry; Hypothalamus; Tyrosine hydroxylase.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900013

Aversive stimulation during the stress-hyporesponsive period does not affect the number of corticotroph cells in neonatal male rats
Provedor de dados: 56
Autores: Aguiar,C.E.; Cadore,L.P.; Padoin,M.J.; Barbosa-Coutinho,L.M.; Lucion,A.B.
Immunohistochemistry was used to evaluate the effects of neonatal handling and aversive stimulation during the first 10 days of life on the number of corticotrophs in the anterior lobe of the pituitary of 11-day-old male Wistar rats. Since adult rats handled during infancy respond with reduced corticosterone secretion in response to stressors and with less behavior inhibition in novel environments, we assumed that neonatal stimulation could affect pituitary morphology during this critical period of cell differentiation. Three groups of animals were studied: intact (no manipulation, N = 5), handled (N = 5) and stimulated (submitted to 3 different aversive stimuli, N = 5). The percentage of ACTH-immunoreactive cells in the anterior lobe of the pituitary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ACTH; Immunohistochemistry; Pituitary; Neonatal handling; Stress.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001200013

The neurobiology of infant maternal odor learning
Provedor de dados: 56
Autores: Raineki,C.; Pickenhagen,A.; Roth,T.L.; Babstock,D.M.; McLean,J.H.; Harley,C.W.; Lucion,A.B.; Sullivan,R.M.
Infant rats must learn to identify their mother’s diet-dependent odor. Once learned, maternal odor controls pups’ approach to the mother, their social behavior and nipple attachment. Here we present a review of the research from four different laboratories, which suggests that neural and behavioral responses to the natural maternal odor and neonatal learned odors are similar. Together, these data indicate that pups have a unique learning circuit relying on the olfactory bulb for neural plasticity and on the hyperfunctioning noradrenergic locus coeruleus flooding the olfactory bulb with norepinephrine to support the neural changes. Another important factor making this system unique is the inability of the amygdala to become incorporated into the infant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maternal odor; Olfactory bulb; Norepinephrine; Attachment; Locus coeruleus; Amygdala.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001000001

The brain decade in debate: VIII. Peptide hormones and behavior: cholecystokinin and prolactin
Provedor de dados: 56
Autores: Beinfeld,M.C.; Bittencourt,J.C.; Bridges,R.S.; Faris,P.L.; Lucion,A.B.; Nasello,A.G.; Weller,A.; Felicio,L.F.
This article is a transcription of an electronic symposium held on November 28, 2000 in which active researchers were invited by the Brazilian Society of Neuroscience and Behavior (SBNeC) to discuss the advances of the last decade in the peptide field with particular focus on central actions of prolactin and cholecystokinin. The comments in this symposium reflect the diversity of prolactin and cholecystokinin research and demonstrate how the field has matured. Since both peptides play a role in reproductive behaviors, particularly mother-infant interactions, this was the starting point of the discussion. Recent findings on the role of the receptor subtypes as well as interaction with other peptides in this context were also discussed. Another issue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CCK; PRL; Dopamine; Maternal behavior; Bulimia; Motivation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001001100002

Brief daily postpartum separations from the litter alter dam response to psychostimulants and to stress
Provedor de dados: 56
Autores: Silveira,P.P.; Benetti,C. da Silva; Portella,A.K.; Diehl,L.A.; Molle,R. Dalle; Lucion,A.B.; Dalmaz,C.
Neonatal handling induces several behavioral and neurochemical alterations in pups, including decreased responses to stress and reduced fear in new environments. However, there are few reports in the literature concerning the behavioral effects of this neonatal intervention on the dams during the postpartum period. Therefore, the aim of the current study was to determine if brief postpartum separation from pups has a persistent impact on the dam's stress response and behavior. Litters were divided into two neonatal groups: 1) non-handled and 2) handled [10 min/day, from postnatal day (PND) 1 to 10]. Weaning occurred at PND 21 when behavioral tasks started to be applied to the dams, including sweet food ingestion (PND 21), forced swimming test (PND 28), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding behavior; Neonatal handling; Psychostimulants; Stress response; Dam behavior.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500426