Wiley
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Immediate early gene (ZENK) responses to song in juvenile female and male zebra finches: Effects of rearing environment
Wiley - Tập 66 Số 11 - Trang 1175-1182 - 2006
AbstractAccurate song perception is likely to be as important for female
songbirds as it is for male songbirds. Male zebra finches (Taeniopygia guttata)
show differential ZENK expression to conspecific and heterospecific songs by day
30 posthatch in auditory perceptual brain regions such as the caudomedial
nidopallium (NCM) and the caudomedial mesopallium (CMM). The current study
examined ZENK exp...
Effects of early song experience on song preferences and song control and auditory brain regions in female house finches (Carpodacus mexicanus)
Wiley - Tập 59 Số 2 - Trang 247-258 - 2004
AbstractWe examined the effects of song tutoring on adult song preferences,
volume of song‐control brain regions, and activity of auditory brain regions in
female house finches (Carpodacus mexicanus). Hand‐reared females were tutored
with local songs, foreign songs, or no song. We then examined adult song
preferences, determined the Nissl‐defined volume of the song‐control nuclei HVc,
Area X, and ...
Multiple forms of acetylcholinesterase and their distribution in endplate and non‐endplate regions of rat diaphragm muscle
Wiley - Tập 4 Số 4 - Trang 343-361 - 1973
AbstractThe properties of the cholinesterase activity in homogenates of whole
rat diaphragm and of innervated (+EP) and non‐innervated (−EP) regions of the
muscle have been investigated. Under standard assay conditions, over 90% of the
cholinesterase activity of whole muscle homogenates was due to specific
acetylcholinesterases. The specific activity of acetylcholinesterase was higher
in +EP regio...
Neurotrophic control of 16S acetylcholinesterase from mammalian skeletal muscle in organ culture
Wiley - Tập 11 Số 6 - Trang 557-570 - 1980
AbstractThe effects of rat obturator nerve extracts on total and 16S
acetylcholinesterase (AChE) activity were studied in endplate regions of
denervated anterior gracilis muscles maintained in organ culture for 48 hr. The
decrease of total AChE activity in cultured muscles was similar to that observed
in denervated muscles in vivo. This decrease in activity was partly prevented by
addition of eith...
Subcellular fractionation of cultured glial cells
Wiley - Tập 2 Số 2 - Trang 169-180 - 1971
AbstractWe have studied the subcellular fractionation of a clonal line of glial
cells from rat brain. In comparison to rat brain, more of the total protein is
collected in the crude nuclear fraction following differential centrifugation.
When a crude mitochondrial fraction is prepared and resolved on a density
gradient, we find that like brain the glial cell crude mitochondrial fraction is
also he...
Seasonal regulation of NMDA receptor NR2B mRNA in the adult canary song system
Wiley - Tập 54 Số 4 - Trang 593-603 - 2003
AbstractDevelopmental changes in the composition and function of
N‐methyl‐D‐aspartate receptors (NMDARs) are believed to regulate neural
plasticity. For example, in songbirds, vocal learning entails NMDAR activation,
and the sensitive period for such learning in zebra finches (ZFs) parallels
developmental changes in NMDAR density and phenotype within several song‐related
brain regions. In contrast...
Seasonal changes in song nuclei and song behavior in Gambel's white‐crowned sparrows
Wiley - Tập 28 Số 1 - Trang 114-125 - 1995
AbstractIn males of several songbird species, the morphology of forebrain nuclei
that control song changes seasonally. The only seasonally breeding songbird in
which seasonal changes in the structure of song control nuclei have been
reported not to occur is the nonmigratory Nuttall's subspecies of white‐crowned
sparrow. In the present study, we manipulated photoperiod and plasma
testosterone conce...
The canary androgen receptor mRNA is localized in the song control nuclei of the brain and is rapidly regulated by testosterone
Wiley - Tập 26 Số 2 - Trang 213-224 - 1995
AbstractSinging in canaries is an androgen‐inducible behavior, under the control
of an identified motor pathway, which includes several discrete “song nuclei” in
the telencephalon. To determine whether the mRNA for the canary androgen
receptor (cAR) is expressed in these song control nuclei, we synthesized probes
from the recently cloned cAR cDNA and used in situ hybridization to examine
spring ma...
Brain aromatase, 5α‐reductase, and 5β‐reductase change seasonally in wild male song sparrows: Relationship to aggressive and sexual behavior
Wiley - Tập 56 Số 3 - Trang 209-221 - 2003
AbstractIn many species, territoriality is expressed only during the breeding
season, when plasma testosterone (T) is elevated. In contrast, in song sparrows
(Melospiza melodia morphna), males are highly territorial during the breeding
(spring) and nonbreeding (autumn) seasons, but not during molt (late summer). In
autumn, plasma sex steroids are basal, and castration has no effect on
aggression. ...
Long‐term culture of mouse cortical neurons as a model for neuronal development, aging, and death
Wiley - Tập 51 Số 1 - Trang 9-23 - 2002
AbstractA long‐term cell culture system was used to study maturation, aging, and
death of cortical neurons. Mouse cortical neurons were maintained in culture in
serum‐free medium (Neurobasal supplemented with B27) for 60 days in vitro (DIV).
The levels of several proteins were evaluated by immunoblotting to demonstrate
that these neurons matured by developing dendrites and synapses and remained
co...
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