Acute Administration of Lactate Exerts Antidepressant-like Effect Through cAMP-dependent Protein Synthesis

Copyright © 2024 IBRO. Published by Elsevier Inc. All rights reserved..

Lactate acts as an important metabolic substrate and signalling molecule modulating neural activities in the brain, and recent preclinical and clinical studies have revealed its antidepressant effect after acute or chronic peripheral administration. However, the neural mechanism underlying the antidepressant effect of lactate, in particular when lactate is acutely administered remains largely unknown. In the current study, we focused on forced swimming test (FST) to elucidate the neural mechanisms through which acute intracerebroventricular (ICV) infusion of lactate exerts antidepressant-like effect. A total of 238 male Sprague Dawley rats were used as experimental subjects. Results showed lactate produced antidepressant-like effect, as indicated by reduced immobility, in a dose- and time-dependent manner. Moreover, the antidepressant-like effect of lactate was dependent of new protein synthesis but not new gene expression, lactate's metabolic effect or hydroxy-carboxylic acid receptor 1 (HCAR1) activation. Furthermore, lactate rapidly promoted dephosphorylation of eukaryotic elongation factor 2 (eEF2) and increased brain-derived neurotrophic factor (BDNF) protein synthesis in the hippocampus in a cyclic adenosine monophosphate (cAMP)-dependent manner. Finally, inhibition of cAMP production blocked the antidepressant-like effect of lactate. These findings suggest that acute administration of lactate exerts antidepressant-like effect through cAMP-dependent protein synthesis.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:542

Enthalten in:

Neuroscience - 542(2024) vom: 26. März, Seite 11-20

Sprache:

Englisch

Beteiligte Personen:

Zhang, Liang [VerfasserIn]
Zheng, Jing [VerfasserIn]
Liu, Shi-Yan [VerfasserIn]
Hou, Li-Li [VerfasserIn]
Zhang, Bo [VerfasserIn]
Tian, Shao-Wen [VerfasserIn]

Links:

Volltext

Themen:

33X04XA5AT
Antidepressive Agents
Brain-Derived Neurotrophic Factor
CAMP
Cyclic AMP
Depression
E0399OZS9N
Eukaryotic elongation factor 2
Journal Article
Lactate
Lactic Acid
Protein synthesis

Anmerkungen:

Date Completed 18.03.2024

Date Revised 18.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.neuroscience.2024.02.003

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368255859