scholarly journals Role of amygdala and hippocampus in the neural circuit subserving conditioned defeat in Syrian hamsters

2010 ◽  
Vol 17 (2) ◽  
pp. 109-116 ◽  
Author(s):  
C. M. Markham ◽  
S. L. Taylor ◽  
K. L. Huhman
Keyword(s):  
Neural Circuit ◽  
Syrian Hamsters ◽  
Conditioned Defeat

Role of microRNAs in Semaphorin function and neural circuit formation

2013 ◽  
Vol 24 (3) ◽  
pp. 146-155 ◽  
Author(s):  
Marie-Laure Baudet ◽  
Anaïs Bellon ◽  
Christine E. Holt
Keyword(s):  
Neural Circuit ◽  
Circuit Formation

Regulatory Role of the Adrenergic Synapse Within a Neural Circuit

1996 ◽  
pp. 261-267
Author(s):  
R. Miftakhov ◽  
G. Abdusheva ◽  
A. Mougalli
Keyword(s):  
Neural Circuit ◽  
Regulatory Role

scholarly journals STAT2 Knockout Syrian Hamsters Support Enhanced Replication and Pathogenicity of Human Adenovirus, Revealing an Important Role of Type I Interferon Response in Viral Control

2015 ◽  
Vol 11 (8) ◽  
pp. e1005084 ◽  
Author(s):  
Karoly Toth ◽  
Sang R. Lee ◽  
Baoling Ying ◽  
Jacqueline F. Spencer ◽  
Ann E. Tollefson ◽  
...  
Keyword(s):  
Type I Interferon ◽  
Human Adenovirus ◽  
Interferon Response ◽  
Type I ◽  
Viral Control ◽  
Syrian Hamsters

scholarly journals Differences in chloride gradients allow for three distinct types of synaptic modulation by endocannabinoids

2016 ◽  
Vol 116 (2) ◽  
pp. 619-628 ◽  
Author(s):  
Yanqing Wang ◽  
Brian D. Burrell
Keyword(s):  
Neural Circuit ◽  
Critical Role ◽  
Low Frequency ◽  
Inhibitory Synapses ◽  
Primary Role ◽  
Synaptic Modulation ◽  
Hirudo Verbana ◽  
Frequency Stimulation ◽  
Circuit Output

Endocannabinoids can elicit persistent depression of excitatory and inhibitory synapses, reducing or enhancing (disinhibiting) neural circuit output, respectively. In this study, we examined whether differences in Cl−gradients can regulate which synapses undergo endocannabinoid-mediated synaptic depression vs. disinhibition using the well-characterized central nervous system (CNS) of the medicinal leech, Hirudo verbana. Exogenous application of endocannabinoids or capsaicin elicits potentiation of pressure (P) cell synapses and depression of both polymodal (Npoly) and mechanical (Nmech) nociceptive synapses. In P synapses, blocking Cl−export prevented endocannabinoid-mediated potentiation, consistent with a disinhibition process that has been indicated by previous experiments. In Nmechneurons, which are depolarized by GABA due to an elevated Cl−equilibrium potentials (ECl), endocannabinoid-mediated depression was prevented by blocking Cl−import, indicating that this decrease in synaptic signaling was due to depression of excitatory GABAergic input (disexcitation). Npolyneurons are also depolarized by GABA, but endocannabinoids elicit depression in these synapses directly and were only weakly affected by disruption of Cl−import. Consequently, the primary role of elevated EClmay be to protect Npolysynapses from disinhibition. All forms of endocannabinoid-mediated plasticity required activation of transient potential receptor vanilloid (TRPV) channels. Endocannabinoid/TRPV-dependent synaptic plasticity could also be elicited by distinct patterns of afferent stimulation with low-frequency stimulation (LFS) eliciting endocannabinoid-mediated depression of Npolysynapses and high-frequency stimulus (HFS) eliciting endocannabinoid-mediated potentiation of P synapses and depression of Nmechsynapses. These findings demonstrate a critical role of differences in Cl−gradients between neurons in determining the sign, potentiation vs. depression, of synaptic modulation under normal physiological conditions.

Sign in / Sign up

Export Citation Format

Share Document