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Turmeric (Curcuma longa L.): evaluation of their nanoparticles in an animal model of depression The objectives of this study were to characterize validated experimental models for the evaluation of depression in animals; to evaluate the viability of the development of turmeric nanoparticles from the zein encapsulation by the liquid-liquid dispersion method; to evaluate its possible antidepressant activity in rats submitted to the chronic mild and unpredictable stress procedure (CMUS), considered a predictive model for induction of depression. In the experimental protocol, 40 Sprague-Dawley rats were divided into 5 groups (n = 8 rats / group): chronic mild and unpredictable stress procedure + nanoparticles (CMUS + NANO), Nanoparticle + Control (NANO), chronic mild and unpredictable stress procedure + Vehicle (CMUS), chronic mild and unpredictable stress procedure + fluoxetine (CMUS + FLUOX), Control + Vehicle (CONTROL) being a filtered water vehicle, also used to resuspend the nanoparticles. The evaluation of anhedonia, considered key to CMUS measurement, confirmed that the protocol was effective in evaluating this behavior. In TNF, it was observed that the stressed groups showed higher values of immobility, a behavior similar to learned helplessness. The administration of nanoparticles (10 mg kg) prevented the elevation of corticosterone levels in rats submitted to the CMUS protocol. These data suggest that turmericcontaining zein nanoparticles may contribute to a possible neuroprotective action of this functional food in depression. In addition, it was verified that the encapsulation allowed the elaboration of nanoparticles with good characteristics, presenting high encapsulation efficiency and low polydispersion index

Cúrcuma (<i>Curcuma longa L.</i>): avaliação de suas nanopartículas em um modelo animal de depressão