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Activation of type-1 cannabinoid receptor shifts the balance between excitation and inhibition towards excitation in layer II/III pyramidal neurons of the rat prelimbic cortex

Overview of attention for article published in Pflügers Archiv - European Journal of Physiology, August 2014
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Title
Activation of type-1 cannabinoid receptor shifts the balance between excitation and inhibition towards excitation in layer II/III pyramidal neurons of the rat prelimbic cortex
Published in
Pflügers Archiv - European Journal of Physiology, August 2014
DOI 10.1007/s00424-014-1586-z
Pubmed ID
Authors

Femke S. den Boon, Taco R. Werkman, Qiluan Schaafsma-Zhao, Kas Houthuijs, Tania Vitalis, Chris G. Kruse, Wytse J. Wadman, Pascal Chameau

Abstract

Activation of the endocannabinoid (eCB) system by exogenous cannabinoids (drug abuse) can alter the physiology of the brain circuits involved in higher-order cognitive functions such as the medial prefrontal cortex (mPFC). A proper balance between excitation and inhibition (E/I balance) is critical for neuronal network oscillations underlying cognitive functions. Since type-1 cannabinoid receptors (CB1Rs), expressed in many brain areas including the mPFC, can modulate excitatory and inhibitory neurotransmission, we aimed to determine whether CB1R activation results in modifications of the E/I balance. We first confirm the presence of functional presynaptic CB1Rs that can modulate both excitatory and inhibitory inputs to layer II/III pyramidal neurons of the prelimbic (PL) area of the mPFC. By decomposing the synaptic response evoked by layer I stimulation into its excitatory and inhibitory components, we show that in vitro CB1R activation with the cannabinoid receptor agonists WIN55,212-2 (WIN) and CP-55940 (CP) modulates the balance between excitation and inhibition (E/I balance) of layer II/III pyramidal neurons. This treatment caused a significant shift of the E/I balance towards excitation, from 18/82 % to 25/75 % (WIN) and from 17/83 to 30/70 % (CP). Finally, when animals were injected with a cannabinoid receptor agonist, we observed a shift of the E/I balance (measured in vitro) towards excitation 1 h after WIN (24/76 %) or after CP injection (30/70 %) when compared to vehicle-injected animals (18/82 %). This modulation of the E/I balance by CB1Rs may thus be fundamental in the regulation of local PL cortical network excitability and could be the mechanism through which excessive CB1R activation (cannabis abuse) affects cognitive functions.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 76 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 4%
Netherlands 1 1%
Unknown 72 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 15 20%
Researcher 13 17%
Student > Bachelor 8 11%
Student > Master 6 8%
Professor 5 7%
Other 11 14%
Unknown 18 24%
Readers by discipline Count As %
Neuroscience 29 38%
Agricultural and Biological Sciences 13 17%
Biochemistry, Genetics and Molecular Biology 3 4%
Medicine and Dentistry 3 4%
Mathematics 1 1%
Other 4 5%
Unknown 23 30%
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 05 August 2014.
All research outputs
#21,162,249
of 23,815,455 outputs
Outputs from Pflügers Archiv - European Journal of Physiology
#1,798
of 1,973 outputs
Outputs of similar age
#195,652
of 231,320 outputs
Outputs of similar age from Pflügers Archiv - European Journal of Physiology
#23
of 30 outputs
Altmetric has tracked 23,815,455 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,973 research outputs from this source. They receive a mean Attention Score of 5.0. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 231,320 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 30 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.