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testosterone in utero increases dendrites

James Michael Howard jmhoward at anthropogeny.com
Wed Apr 6 11:56:28 EST 2005


Ontogenez. 2005 Jan-Feb;36(1):64-7


[The effects of sex and neonatal androgenization on neuron
dendroarchitectonics in amygdala posterior cortical nucleus]

[Article in Russian]

[No authors listed]

Sex differences in neuron dendroarchitectonics of the amygdala
posterior cortical nucleus of adult rats were described for the first
time using the Golgi method. Long-axon sparse-branched neurons in male
rats possessed a larger number of primary dendrites, while female rats
had long-axon dense-branched neurons with longer dendrites. Injection
of testosterone propionate at 1250 g to females on day 5 after birth
resulted in a greater number of primary dendrites of long-axon sparse
branched neurons in adults, as compared to that in the control.
Dendrites of long-axon sparse-branched neurons became much longer,
thus enlarging the dendrite area.





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