| Author |
Fortunato, Jucélia Jeremias da Rosa, Naiana Martins Laurentino, Ana Olívia Goulart, Marina Michalak, Camila Borges, Lidiane Pinto da Cruz Cittadin Soares, Evandro Reis, Patricia Alves de Castro Faria Neto, Hugo Caire Petronilho, Fabrícia |
| Description |
Author Affiliation: Fortunato JJ ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil); da Rosa N ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); Martins Laurentino AO ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); Goulart M ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); Michalak C ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); Borges LP ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); da Cruz Cittadin Soares E ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.); Reis PA ( Immunopharmacology Laboratory, Instituto Oswaldo Cruz/IOC/FIOCRUZ-Manguinhos, Rio de Janeiro, Brazil.); de Castro Faria Neto HC ( Immunopharmacology Laboratory, Instituto Oswaldo Cruz/IOC/FIOCRUZ-Manguinhos, Rio de Janeiro, Brazil.); Petronilho F ( Neurobiology Laboratory of Inflammatory and Metabolic Processes (NeuroIMet), Postgraduate Program in Health Sciences, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.) |
| Abstract |
OBJECTIVE: Supplementation with ω-3 polyunsaturated fatty acids (PUFAs) can positively contribute to neurologic development, modulating inflammatory responses, promoting homeostasis, and having a positive effect on animal behaviors associated with mental disorders. The aim of this study was to evaluate behavioral and biochemical effects of ω-3 fatty acid supplementation in an animal model for mental disorders by prenatal maternal exposure to lipopolysaccardies (LPS) from the maternal immune activation. METHODS: Twelve pregnant Wistar rats were used. Each rat received 100 µg/kg of LPS or saline solution on gestational day (GD) 9.5. The offspring remained with mothers until weaning and from postnatal day (PND) 30 were supplemented with ω-3 PUFA or saline solution by gavage at a dose of 0.8 g/kg orally for 21 d. On PND 52, the animals underwent behavioral tests; then, they were sacrificed, and the brain structures were dissected and analyzed by levels: neuron-specific enolase (NSE), brain-derived neurotrophic factor, and transforming growth factor (TGF)-ß. RESULT: Prenatal exposure to LPS significantly increased the episodes of stereotyped movements and decreased social interaction in the offspring (P = 0.009 and P = 0.001, respectively), after ω-3 PUFA supplementation these parameters reversed (P = 0.005 and P = 0.013, respectively). Significant changes also were identified in the biochemical analysis in NSE and TGF-ß in the brain structures; these conditions were reversed after ω-3 PUFA supplementation. CONCLUSION: Supplementation with ω-3 PUFA reversed animal behaviors that often are observed in autism and other mental disorders in rats prenatally exposed to LPS, and also exerted neuroprotective effects in marker levels of neuronal damage and expression of TGF-ß. |
