ArticleInternational journal of nanomedicine2026
Thymoquinone-Loaded Hexosomal Nanoparticles Attenuate Neuroinflammation and Improve Cognitive Function in an Alzheimer's Disease Mouse Model.
Article in International journal of nanomedicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Alzheimer's disease (AD) involves neuroinflammation that worsens cognitive decline. Thymoquinone (TQ) has potent anti-inflammatory activity, but its therapeutic application is limited by poor solubility, stability, and systemic bioavailability, which may restrict effective brain exposure. This study developed TQ-loaded hexosomal nanoparticles (TQ-HNP) to enhance TQ delivery and therapeutic efficacy in a dizocilpine (MK-801)- induced mouse model of AD. Methods: TQ-HNP were prepared using glyceryl monooleate, oleic acid, and poloxamer 407, optimized to ~104 nm size, -31 mV zeta potential, and ~95% entrapment efficiency. Following intraperitoneal administration of free TQ and TQ-HNP, male C57BL/6 mice treated with dizocilpine received intraperitoneal injections of free TQ or TQ-HNP and were subsequently evaluated for cognitive function (Novel Object Recognition test), anxiety-like behavior (Open Field test), and brain levels of the pro-inflammatory cytokines IL-6, TNF-α, and IL-1β. Results: Dizocilpine impaired memory and increased anxiety-like behavior in assessed mice, while TQ-HNP significantly improved both outcomes compared to free TQ. TQ-HNP also reduced IL-6 in the hippocampus and cerebellum and lowered TNF-α and IL-1β in the cerebellum, confirming its anti-inflammatory efficacy. Discussion: TQ-HNP enhanced the brain delivery of thymoquinone, mitigated neuroinflammation, and restored cognitive function in the AD-like mouse model, supporting its potential as a nanocarrier-based therapeutic strategy for Alzheimer's disease and other neurodegenerative disorders.
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