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Mg-Al LDH/Tryptophan Nanoparticle System Improves Depressive-like Behavior in Rats
Juliana P S Nascimento1,2, Taiana C V S Carvalheiro-Simas3, Arnold Ferreira Janssen1
1Laboratory of Natural Resources and Sustainability of the Amazon, Institute of Exact and Natural Sciences, Federal University of Pará, Belém 66075-110, Pará, Brazil.
A new nanohybrid, tryptophan-layered double hydroxide (TRP-LDH), enhances tryptophan bioavailability and brain delivery. This novel compound shows antidepressant effects in animal models, offering a promising approach for managing mood disorders.
Area of Science:
- Biomaterials Science
- Neuroscience
- Pharmacology
Background:
- COVID-19 pandemic exacerbated mental health issues like anxiety and depression.
- L-Tryptophan (TRP), a serotonin precursor, has therapeutic potential but faces bioavailability and blood-brain barrier challenges.
- Novel delivery systems are needed to improve TRP efficacy for mood disorders.
Purpose of the Study:
- To develop and characterize a novel nanohybrid for enhanced tryptophan delivery.
- To investigate the antidepressant effects of the TRP-LDH nanohybrid in vivo.
Main Methods:
- Synthesized TRP-LDH nanohybrid via coprecipitation.
- Characterized the nanohybrid using X-ray diffraction and FTIR spectroscopy.
- Assessed in vitro TRP release kinetics and in vivo antidepressant activity in a rat forced swimming test.
Main Results:
- Successful intercalation of TRP into magnesium-aluminum-layered double hydroxides confirmed by structural analysis.
- Sustained in vitro release of TRP from the nanohybrid over 48 hours.
- TRP-LDH significantly improved antidepressant-related behaviors in rats compared to TRP alone.
Conclusions:
- TRP-LDH nanohybrid enhances tryptophan bioavailability and brain delivery.
- The nanohybrid demonstrates significant antidepressant effects, suggesting potential for mood disorder management.
- TRP-LDH represents a promising therapeutic strategy for neurological and psychiatric conditions.
