Objectives: neuromodulatory effects of limonin using an adult zebrafish model. Materials and Methods: The compound was evaluated for toxicity to zebrafish using the comet assay and phenotypic assessment. Through a series of assays encompassing behavioral, histological, and biochemical analyses, rescue from cell death was observed in adjacent regions despite the native regenerative background of a wild-type zebrafish. A novel brain cell suspension from adult zebrafish was also employed to discover rescue against necrotic cell death cues. Results: Lipid peroxidation-induced neuroinflammation and 2-fold reduction of free radicals, compared with TBI controls, were observed with 300 µM Limonin treatment. The cell viability assay performed, indicated at least 5-fold reduction in the cell damage due to brain injury. Histopathological sectioning and staining showed reduction in inflammatory cell infiltration and demyelination demonstrating the anti-inflammatory and neuroprotective properties of limonin. We also demonstrated behavioral changes associated with TBI that can be alleviated by limonin treatment. Conclusion: These findings underscore the potential of limonin as a potent neuromodulator and warrant further preclinical investigations to mitigate TBI-associated neurological deficits.
Malinika et al. (Thu,) studied this question.