1
|
Nonato DTT, Aragão GF, Craveiro RMCB, Pereira MG, Vasconcelos SMM, Wong DVT, Júnior RCPL, Soares PMG, Lima MADS, Assreuy AMS, Chaves EMC. Polysaccharide-rich extract of Genipa americana leaves protects seizures and oxidative stress in the mice model of pentylenetetrazole-induced epilepsy. Biomed Pharmacother 2024; 172:116212. [PMID: 38364734 DOI: 10.1016/j.biopha.2024.116212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/18/2024] Open
Abstract
Plant polysaccharides have biological activities in the brain and those obtained from Genipa americana leaves present antioxidant and anticonvulsant effects in the mice model of pentylenetetrazole (PTZ)-induced acute seizures. This study aimed to evaluate the polysaccharide-rich extract of Genipa americana leaves (PRE-Ga) in the models of acute seizures and chronic epilepsy (kindling) induced by PTZ. In the acute seizure model, male Swiss mice (25-35 g) received PRE-Ga (1 or 9 mg/kg; intraperitoneal- IP), alone or associated with diazepam (0.01 mg/kg), 30 min before induction of seizures with PTZ (70 mg/kg; IP). In the chronic epilepsy model, seizures were induced by PTZ (40 mg/kg) 30 min after treatment and in alternated days up to 30 days and evaluated by video. Brain areas (prefrontal cortex, hippocampus, striatum) were assessed for inflammatory and oxidative stress markers. Diazepam associated to PRE-Ga (9 mg/kg; i.p.) increased the latency of seizures in acute (222.4 ± 47.57 vs. saline: 62.00 ± 4.709 s) and chronic models (6.267 ± 0.502 vs. saline: 4.067 ± 0.407 s). In hippocampus, PRE-Ga (9 mg/kg) inhibited TNF-α (105.9 ± 5.38 vs. PTZ: 133.5 ± 7.62 pmol/g) and malondialdehyde (MDA) (473.6 ± 60.51) in the chronic model. PTZ increased glial fibrillar acid proteins (GFAP) and Iba-1 in hippocampus, which was reversed by PRE-Ga (GFAP: 1.9 ± 0.23 vs PTZ: 3.1 ± 1.3 and Iba-1: 2.2 ± 0.8 vs PTZ: 3.2 ± 1.4). PRE-Ga presents neuroprotector effect in the mice model of epilepsy induced by pentylenetetrazole reducing seizures, gliosis, inflammatory cytokines and oxidative stress.
Collapse
Affiliation(s)
| | - Gislei Frota Aragão
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | | | - Maria Gonçalves Pereira
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | | | - Deysi Viviana Tenazoa Wong
- Department of Physiology and Pharmacology, Federal University of Ceará, 60455-760 Fortaleza, Ceará, Brazil
| | | | - Pedro Marcos Gomes Soares
- Department of Physiology and Pharmacology, Federal University of Ceará, 60455-760 Fortaleza, Ceará, Brazil
| | | | - Ana Maria Sampaio Assreuy
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil
| | - Edna Maria Camelo Chaves
- Superior Institute of Biomedical Sciences, State University of Ceará, 60714-903 Fortaleza, Ceará, Brazil.
| |
Collapse
|