» Articles » PMID: 31402860

Endogenous HCN Channels Modulate the Firing Activity of Globus Pallidus Neurons in Parkinsonian Animals

Overview
Specialty Geriatrics
Date 2019 Aug 13
PMID 31402860
Citations 6
Authors
Affiliations
Soon will be listed here.
Abstract

The globus pallidus occupies a critical position in the indirect pathway of the basal ganglia motor control system. Hyperpolarization-activated cyclic-nucleotide gated (HCN) channels play an important role in the modulation of neuronal excitability. extracellular single unit recording, behavioral test and immunohistochemistry were performed to explore the possible modulation of endogenous HCN channels in the globus pallidus under parkinsonian states. In MPTP parkinsonian mice, micro-pressure application of the selective HCN channel antagonist, ZD7288, decreased the firing rate in 10 out of the 28 pallidal neurons, while increased the firing rate in another 15 out of the 28 neurons. In 6-OHDA parkinsonian rats, ZD7288 also bidirectionally regulated the spontaneous firing activity of the globus pallidus neurons. The proportion of pallidal neurons with ZD7288-induced slowing of firing rate tended to reduce in both parkinsonian animals. Morphological studies revealed a weaker staining of HCN channels in the globus pallidus under parkinsonian state. Finally, behavioral study demonstrated that intrapallidal microinjection of ZD7288 alleviated locomotor deficits in MPTP parkinsonian mice. These results suggest that endogenous HCN channels modulate the activities of pallidal neurons under parkinsonian states.

Citing Articles

Daphnetin modulates GLP-1R to alleviate cognitive dysfunction in diabetes: implications for inflammation and oxidative stress.

Liang F, Tian X, Ding L Front Pharmacol. 2024; 15:1438926.

PMID: 39257395 PMC: 11384579. DOI: 10.3389/fphar.2024.1438926.


Role of HCN channels in the functions of basal ganglia and Parkinson's disease.

Qi Z, Yan Q, Fan X, Peng J, Zhu H, Jiang Y Cell Mol Life Sci. 2024; 81(1):135.

PMID: 38478096 PMC: 10937777. DOI: 10.1007/s00018-024-05163-w.


Physiology and Therapeutic Potential of SK, H, and M Medium AfterHyperPolarization Ion Channels.

Dwivedi D, Bhalla U Front Mol Neurosci. 2021; 14:658435.

PMID: 34149352 PMC: 8209339. DOI: 10.3389/fnmol.2021.658435.


Characterization of Inhibitory Effectiveness in Hyperpolarization-Activated Cation Currents by a Group of -Kaurane-Type Diterpenoids from .

Kuo P, Liu Y, Lo Y, Wu S Int J Mol Sci. 2020; 21(4).

PMID: 32070065 PMC: 7072998. DOI: 10.3390/ijms21041268.


Characterization of Effectiveness in Concerted Inhibition and Stimulation by Pterostilbene (Trans-3,5-dimethoxy-4'-hydroxystilbene), a Stilbenoid.

So E, Gao Z, Ko S, Wu S Int J Mol Sci. 2020; 21(1).

PMID: 31948124 PMC: 6981816. DOI: 10.3390/ijms21010357.


References
1.
Williams S, Stuart G . Site independence of EPSP time course is mediated by dendritic I(h) in neocortical pyramidal neurons. J Neurophysiol. 2000; 83(5):3177-82. DOI: 10.1152/jn.2000.83.5.3177. View

2.
Southan A, Morris N, Stephens G, Robertson B . Hyperpolarization-activated currents in presynaptic terminals of mouse cerebellar basket cells. J Physiol. 2000; 526 Pt 1:91-7. PMC: 2270001. DOI: 10.1111/j.1469-7793.2000.t01-1-00091.x. View

3.
Santoro B, Chen S, Luthi A, Pavlidis P, Shumyatsky G, Tibbs G . Molecular and functional heterogeneity of hyperpolarization-activated pacemaker channels in the mouse CNS. J Neurosci. 2000; 20(14):5264-75. PMC: 6772310. View

4.
Raz A, Vaadia E, Bergman H . Firing patterns and correlations of spontaneous discharge of pallidal neurons in the normal and the tremulous 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine vervet model of parkinsonism. J Neurosci. 2000; 20(22):8559-71. PMC: 6773163. View

5.
Notomi T, Shigemoto R . Immunohistochemical localization of Ih channel subunits, HCN1-4, in the rat brain. J Comp Neurol. 2004; 471(3):241-76. DOI: 10.1002/cne.11039. View