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Published in: Metabolic Brain Disease 4/2024

14-02-2024 | Amnesia | Original Article

New curcumin-loaded nanocapsules as a therapeutic alternative in an amnesia model

Authors: Karline da Costa Rodrigues, Manoel Rodrigues da Silva Neto, Victor dos Santos Barboza, Sandra Elisa Hass, Rodrigo de Almeida Vaucher, Janice Luehring Giongo, Ricardo Frederico Schumacher, Ethel Antunes Wilhelm, Cristiane Luchese

Published in: Metabolic Brain Disease | Issue 4/2024

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Abstract

This study aimed to investigate the action of two different formulations of curcumin (Cur)-loaded nanocapsules (Nc) (Eudragit [EUD] and poly (ɛ-caprolactone) [PCL]) in an amnesia mice model. We also investigated the formulations’ effects on scopolamine-induced (SCO) depressive- and anxiety-like comorbidities, the cholinergic system, oxidative parameters, and inflammatory markers. Male Swiss mice were randomly divided into five groups (n = 8): group I (control), group II (Cur PCL Nc 10 mg/kg), group III (Cur EUD Nc 10 mg/kg), group IV (free Cur 10 mg/kg), and group V (SCO). Treatments with Nc or Cur (free) were performed daily or on alternate days. After 30 min of treatment, the animals received the SCO and were subjected to behavioral tests 30 min later (Barnes maze, open-field, object recognition, elevated plus maze, tail suspension tests, and step-down inhibitory avoidance tasks). The animals were then euthanized and tissue was removed for biochemical assays. Our results demonstrated that Cur treatment (Nc or free) protected against SCO-induced amnesia and depressive-like behavior. The ex vivo assays revealed lower acetylcholinesterase (AChE) and catalase (CAT) activity, reduced thiobarbituric species (TBARS), reactive species (RS), and non-protein thiols (NSPH) levels, and reduced interleukin-6 (IL-6) and tumor necrosis factor (TNF) expression. The treatments did not change hepatic markers in the plasma of mice. After treatments on alternate days, Cur Nc had a more significant effect than the free Cur protocol, implying that Cur may have prolonged action in Nc. This finding supports the concept that it is possible to achieve beneficial effects in nanoformulations, and treatment on alternate days differs from the free Cur protocol regarding anti-amnesic effects in mice.

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Metadata
Title
New curcumin-loaded nanocapsules as a therapeutic alternative in an amnesia model
Authors
Karline da Costa Rodrigues
Manoel Rodrigues da Silva Neto
Victor dos Santos Barboza
Sandra Elisa Hass
Rodrigo de Almeida Vaucher
Janice Luehring Giongo
Ricardo Frederico Schumacher
Ethel Antunes Wilhelm
Cristiane Luchese
Publication date
14-02-2024
Publisher
Springer US
Keywords
Amnesia
Cytokines
Published in
Metabolic Brain Disease / Issue 4/2024
Print ISSN: 0885-7490
Electronic ISSN: 1573-7365
DOI
https://doi.org/10.1007/s11011-023-01329-w

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