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Estrogen receptor α and G-protein coupled estrogen receptor 1 are localized to GABAergic neurons in the dorsal striatum.

Author(s): Almey A, Milner TA, Brake WG

Neurosci Lett. 2016 05 27;622:118-23 Authors: Almey A, Milner TA, Brake WG

Article GUID: 27080432
17β-estradiol locally increases phasic dopamine release in the dorsal striatum.

Author(s): Shams WM, Cossette MP, Shizgal P, Brake WG

Neurosci Lett. 2018 02 05;665:29-32 Authors: Shams WM, Cossette MP, Shizgal P, Brake WG

Article GUID: 29175028
Dopamine suppresses persistent firing in layer III lateral entorhinal cortex neurons.

Author(s): Batallán-Burrowes AA, Chapman CA

Neurosci Lett. 2018 05 01;674:70-74 Authors: Batallán-Burrowes AA, Chapman CA

Article GUID: 29524644
Title:17β-estradiol locally increases phasic dopamine release in the dorsal striatum.
Authors:Shams WM,  Cossette MP,  Shizgal P,  Brake WG
Link:https://www.ncbi.nlm.nih.gov/pubmed/29175028?dopt=Abstract
DOI:10.1016/j.neulet.2017.11.039
Category:Neurosci Lett
PMID:29175028
Dept Affiliation: CSBN
1 Department of Psychology, Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, H4B 1R6, Canada. Electronic address: waqqas.shams@gmail.com.
2 Department of Psychology, Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, H4B 1R6, Canada. Electronic address: mpy_cossette@hotmail.com.
3 Department of Psychology, Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, H4B 1R6, Canada. Electronic address: peter.shizgal@concordia.ca.
4 Department of Psychology, Centre for Studies in Behavioral Neurobiology, Concordia University, Montreal, Quebec, H4B 1R6, Canada. Electronic address: wayne.brake@concordia.ca.

Description:

17ß-estradiol locally increases phasic dopamine release in the dorsal striatum.

Neurosci Lett. 2018 02 05;665:29-32

Authors: Shams WM, Cossette MP, Shizgal P, Brake WG

Abstract

Studies using in vivo microdialysis have shown that 17ß-estradiol (E2) increases dopamine (DA) transmission in the dorsal striatum. Both systemic administration of E2 and local infusion into the dorsal striatum rapidly enhance amphetamine-induced DA release. However, it is not known to what degree these effects reflect tonic and/or phasic DA release. It was hypothesized that E2 acts directly within the DS to rapidly increase phasic DA transmission. In urethane-anesthetized (1.5mL/kg) female rats, we used fast-scan cyclic voltammetry to study the effects of E2 on phasic, electrically-evoked release of DA in the dorsal striatum. Rats were ovariectomized and implanted with a silastic tube containing 5% E2 in cholesterol, previously shown to mimic low physiological serum concentrations of~20-25pg/mL. DA release was evoked every 1min by delivering biphasic electrical stimulation in the substantia nigra. Local infusions of E2 (244.8pg/µl) into the dorsal striatum increased the amplitude of the electrically evoked DA transients. Behaviorally significant stimuli and events trigger phasic release of DA. The present findings predict that E2 would boost such signaling in behaving subjects.

PMID: 29175028 [PubMed - indexed for MEDLINE]