Journal: BMC Complementary Medicine and Therapies
Article Title: Sweet orange essential oil and (+)-limonene prevent oxidative stress, reduce inflammation, and apoptosis in differentiated SH-SY5Y neuroblastoma/BV-2 microglia co-culture neurodegeneration models
doi: 10.1186/s12906-025-05215-z
Figure Lengend Snippet: Secreted TNF-α levels in 6-OHDA-treated differentiated SH-SY5Y cells after administration of SO EO and (+)-limonene, and TNF-α production in BV-2 cells in the co-cultures. TNF-α concentration was measured using the Human TNF-α ELISA kit for SH-SY5Y cells and the Mouse TNF-α ELISA kit for BV-2 cells. A TNF-α secretion in 6-OHDA-treated SH-SY5Y cells after the administration of SO EO, (+)-limonene, and rasagiline. B TNF-α levels in 6-OHDA- and FAC-treated SH-SY5Y cells after the administration of SO EO, (+)-limonene, and rasagiline. C TNF-α secretion in 6-OHDA-treated SH-SY5Y cells cultured and treated in the presence of microglia, SO EO, (+)-limonene, and rasagiline. D TNF-α levels in 6-OHDA- and FAC-treated SH-SY5Y cells cultured and treated in the presence of microglia and SO EO, (+)-limonene, and rasagiline. E TNF-α secretion by BV-2 microglia in the various treated co-cultures. F TNF-α production by BV-2 microglia in FAC-pretreated co-cultures. Columns represent the mean ± SD of three independent experiments. The asterisk indicates p < 0.05, compared to the DMSO-treated controls. Cross means p < 0.05, compared to the 6-OHDA treatment. Double-cross represents p < 0.05, compared to the SO treatment. Abbreviations: TNF-α, Tumor necrosis factor-α; FAC, ferric ammonium citrate; 6-OHDA, 6-hydroxidopamine; SO EO, sweet orange essential oil; Lim, (+)-limonene; Ras, rasagiline; ND, non-detectable
Article Snippet: Cytochrome c levels were determined using a Human Cytochrome c ELISA Kit (Thermo Fisher Scientific Inc., Waltham, MA, USA) according to the manufacturer’s protocol.
Techniques: Concentration Assay, Enzyme-linked Immunosorbent Assay, Cell Culture