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Cefotaxime is a broad-spectrum antibiotic targeting Gram-negative bacteria used for diverse infections, but it can be toxic to the stomach, liver, and kidneys. This study explored the protective effects of geranium oil against cefotaxime-induced hepatotoxicity and nephrotoxicity in rats, employing biochemical, histopathological, and immunohistochemical evaluations. Thirty rats were divided into five groups of six animals each one. Group 1 received orally normal saline for 14 days, Group 2 was given orally 2.5% DMSO for 14 days, Group 3 received cefotaxime (200 mg/kg/day IM) for 14 days, Group 4 received with cefotaxime (200 mg/kg/day IM) and geranium oil (67 mg/kg b. w./day orally in DMSO) for 14 days, and Group 5 received geranium oil alone (67 mg/kg b. w./day orally in DMSO) for 14 days. Geranium oil significantly reduced cefotaxime-induced damage, evidenced by lower serum levels of liver enzymes (AST, ALT), renal markers (urea, creatinine), and other indicators (alkaline phosphatase, TNF-alpha, IL-1Beta, MAPK, nitric oxide, MDA). It also increased levels of protective tissue biomarkers such as NrF2, albumin, catalase, Beclin 1, and reduced glutathione (GSH). Histopathological and immunohistochemical analyses revealed significant protective effects in liver and renal tissues in rats treated with Geranium oil. These results suggest that Geranium oil is effective in mitigating cefotaxime-induced hepatotoxicity and renal toxicity. [ABSTRACT FROM AUTHOR]

India and Ethiopia employ Guizotia abyssinica (niger plant) as a source of edible vegetable oil. Previous studies have documented the niger plant's antioxidant properties and dietary benefits. Here, G. abyssinica extract was obtained and ten known bioactive components (1–10) were isolated. The antioxidant, antidiabetic, and prebiotic properties of whole extract and isolated components of niger and the plant's ability to cooperate symbiotically with probiotic strains were examined. Compound 10, myricetin-3-O-L-rhamnoside, had the highest antioxidant capacity measured in the 2,2-diphenylpicrylhydrazyl (DPPH, 4629.76 ± 6.02 µmol Trolox equivalent/g compound) and ferric-reducing antioxidant power (FRAP, 2667.62 ± 7.5 mol Trolox equivalent/g compound) assays. The lowest α-amylase and glycogen phosphorylase activities and glucose diffusion were obtained with whole G. abyssinica extracts, whereas compounds 8–10 had moderate inhibitory effects. G. abyssinica extract also induced the highest glucose absorption by yeast cells in the presence of 5 mM of glucose. Moreover, Lactobacillus plantarum and L. rhamnosus incubated with β-sitosterol 3-O-D-glucoside (compound 7) showed the highest prebiotic activity score. The levels of L-(+)-lactic acid isomer in the probiotic strains were the highest in presence of the whole extract and decreased progressively in the presence of flavonoid glycosides (compounds 8–10) and β-sitosterol 3-O-D-glucoside. The enzymatic profile of the probiotic strains was unaffected by the niger extract and compounds 7–10. The findings revealed that the biological activities of G. abyssinica extract are mediated by the compounds 1–10, and it may be considered as a promising plant for the treatment of diabetes mellitus. [ABSTRACT FROM AUTHOR]