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Development of GPCR Modulation of GABAergic Transmission in Chicken Nucleus Laminaris Neurons

Overview of attention for article published in PLOS ONE, April 2012
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Title
Development of GPCR Modulation of GABAergic Transmission in Chicken Nucleus Laminaris Neurons
Published in
PLOS ONE, April 2012
DOI 10.1371/journal.pone.0035831
Pubmed ID
Authors

Zheng-Quan Tang, Yong Lu

Abstract

Neurons in the nucleus laminaris (NL) of birds act as coincidence detectors and encode interaural time difference to localize the sound source in the azimuth plane. GABAergic transmission in a number of CNS nuclei including the NL is subject to a dual modulation by presynaptic GABA(B) receptors (GABA(B)Rs) and metabotropic glutamate receptors (mGluRs). Here, using in vitro whole-cell patch clamp recordings from acute brain slices of the chick, we characterized the following important but unknown properties pertaining to such a dual modulation: (1) emergence of functional GABA synapses in NL neurons; (2) the temporal onset of neuromodulation mediated by GABA(B)Rs and mGluRs; and (3) the physiological conditions under which GABA(B)Rs and mGluRs are activated by endogenous transmitters. We found that (1) GABA(A)R-mediated synaptic responses were observed in about half of the neurons at embryonic day 11 (E11); (2) GABA(B)R-mediated modulation of the GABAergic transmission was detectable at E11, whereas the modulation by mGluRs did not emerge until E15; and (3) endogenous activity of GABA(B)Rs was induced by both low- (5 or 10 Hz) and high-frequency (200 Hz) stimulation of the GABAergic pathway, whereas endogenous activity of mGluRs was induced by high- (200 Hz) but not low-frequency (5 or 10 Hz) stimulation of the glutamatergic pathway. Furthermore, the endogenous activity of mGluRs was mediated by group II but not group III members. Therefore, autoreceptor-mediated modulation of GABAergic transmission emerges at the same time when the GABA synapses become functional. Heteroreceptor-mediated modulation appears at a later time and is receptor type dependent in vitro.

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Geographical breakdown

Country Count As %
Germany 1 8%
Australia 1 8%
Unknown 11 85%

Demographic breakdown

Readers by professional status Count As %
Other 3 23%
Student > Ph. D. Student 3 23%
Student > Bachelor 2 15%
Researcher 2 15%
Student > Master 1 8%
Other 1 8%
Unknown 1 8%
Readers by discipline Count As %
Agricultural and Biological Sciences 6 46%
Biochemistry, Genetics and Molecular Biology 3 23%
Neuroscience 2 15%
Environmental Science 1 8%
Unknown 1 8%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 April 2012.
All research outputs
#17,656,460
of 22,664,644 outputs
Outputs from PLOS ONE
#146,218
of 193,509 outputs
Outputs of similar age
#121,847
of 163,178 outputs
Outputs of similar age from PLOS ONE
#2,781
of 3,747 outputs
Altmetric has tracked 22,664,644 research outputs across all sources so far. This one is in the 19th percentile – i.e., 19% of other outputs scored the same or lower than it.
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