Glial and axonal perikaryal coverage and somatic spines in the posterodorsal medial amygdala of male and cycling female rats

2015 ◽  
Vol 523 (14) ◽  
pp. 2127-2137 ◽  
Author(s):  
Mariana Zancan ◽  
Aline Dall'Oglio ◽  
Taís Malysz Sarzenski ◽  
Martin Ian Maher ◽  
Luis Miguel Garcia-Segura ◽  
...  
Keyword(s):  
Female Rats ◽  
Medial Amygdala ◽  
Somatic Spines

Excitotoxic Amino Acid Injections into the Medial Amygdala Facilitate Maternal Behavior in Virgin Female Rats

1993 ◽  
Vol 27 (1) ◽  
pp. 56-81 ◽  
Author(s):  
Michael Numan ◽  
Marilyn J. Numan ◽  
Jeffrey B. English
Keyword(s):  
Amino Acid ◽  
Maternal Behavior ◽  
Virgin Female ◽  
Female Rats ◽  
Medial Amygdala

scholarly journals Role of the posterodorsal medial amygdala in predator odour stress‐induced puberty delay in female rats

2019 ◽  
Vol 31 (6) ◽  
pp. e12719
Author(s):  
Xiao Feng Li ◽  
Daniel A. Adekunbi ◽  
Hussah M. Alobaid ◽  
Shengyun Li ◽  
Michel Pilot ◽  
...  
Keyword(s):  
Female Rats ◽  
Medial Amygdala ◽  
Predator Odour

Neurotrophic factors in the posterodorsal medial amygdala of male and cycling female rats

2020 ◽  
Vol 155 ◽  
pp. 92-101
Author(s):  
Mariana Zancan ◽  
Dinara J. Moura ◽  
Ana Moira Morás ◽  
Luiza Steffens ◽  
Ana Carolina de Moura ◽  
...  
Keyword(s):  
Neurotrophic Factors ◽  
Female Rats ◽  
Medial Amygdala

scholarly journals The Posterodorsal Medial Amygdala Regulates the Timing of Puberty Onset in Female Rats

Endocrinology ◽  
2015 ◽  
Vol 156 (10) ◽  
pp. 3725-3736 ◽  
Author(s):  
X. F. Li ◽  
M. H. Hu ◽  
B. P. Hanley ◽  
Y. S. Lin ◽  
L. Poston ◽  
...  
Keyword(s):  
Body Weight ◽  
Brain Region ◽  
Female Rats ◽  
Delayed Puberty ◽  
Calorie Intake ◽  
Medial Amygdala ◽  
Early Puberty ◽  
Receptor Antagonism ◽  
Play Fighting ◽  
Timing Of Puberty

Obesity is the major risk factor for early puberty, but emerging evidence indicates other factors including psychosocial stress. One key brain region notable for its role in controlling calorie intake, stress, and behavior is the amygdala. Early studies involving amygdala lesions that included the medial nucleus advanced puberty in rats. More recently it was shown that a critical site for lesion-induced hyperphagia and obesity is the posterodorsal subnucleus of the medial amygdala (MePD), which may explain the advancement of puberty. Glutamatergic activity also increases in the MePD during puberty without a corresponding γ-aminobutyric acid (GABA)ergic change, suggesting an overall activation of this brain region. In the present study, we report that neurotoxic lesioning of the MePD advances puberty and increases weight gain in female rats fed a normal diet. However, MePD lesioned rats fed a 25% nonnutritive bulk diet also showed the dramatic advancement of puberty but without the increase in body weight. In both dietary groups, MePD lesions resulted in an increase in socialization and a decrease in play fighting behavior. Chronic GABAA receptor antagonism in the MePD from postnatal day 21 for 14 days also advanced puberty, increased socialization, and decreased play fighting without altering body weight, whereas glutamate receptor antagonism delayed puberty and decreased socialization without affecting play fighting. In conclusion, our results suggest the MePD regulates the timing of puberty via a novel mechanism independent of change in body weight and caloric intake. MePD glutamatergic systems advance the timing of puberty whereas local GABAergic activation results in a delay.

Glial fibrillary acidic protein immunodetection and immunoreactivity in the anterior and posterior medial amygdala of male and female rats

2002 ◽  
Vol 58 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Alberto A Rasia-Filho ◽  
Léder L Xavier ◽  
Paula dos Santos ◽  
Günther Gehlen ◽  
Matilde Achaval
Keyword(s):  
Glial Fibrillary Acidic Protein ◽  
Acidic Protein ◽  
Female Rats ◽  
Medial Amygdala ◽  
Male And Female ◽  
Male And Female Rats

scholarly journals Inhibitory and multisynaptic spines, and hemispherical synaptic specialization in the posterodorsal medial amygdala of male and female rats

2014 ◽  
Vol 522 (9) ◽  
pp. 2075-2088 ◽  
Author(s):  
Janaina Brusco ◽  
Suélen Merlo ◽  
Érika T. Ikeda ◽  
Ronald S. Petralia ◽  
Bechara Kachar ◽  
...  
Keyword(s):  
Female Rats ◽  
Medial Amygdala ◽  
Male And Female ◽  
Male And Female Rats
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