Thymoquinone & Insulin Signaling: Hepatic Gluconeogenesis & AMPK
The Metabolic Modulator of Ancient Kitchens
In clinical metabolic trials, daily administration of cold-pressed Nigella sativa oil consistently demonstrates significant reductions in fasting blood glucose, post-prandial glycemic excursions, and glycosylated hemoglobin ($HbA1c$).- AMPK Activation & GLUT4 Translocation: Thymoquinone triggers the phosphorylation of AMP-activated protein kinase (AMPK) in skeletal muscle cells, stimulating insulin-independent glucose uptake via GLUT4 translocation.
- Inhibition of Hepatic Gluconeogenesis: In the liver, thymoquinone downregulates key gluconeogenic enzymes: phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase), curbing excessive overnight hepatic glucose dumping into the bloodstream.
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Primary Scientific Citations
- Heshmati, J., et al. (2015). The effects of Nigella sativa on glycemic control, lipid profiles, and biomarkers of inflammation in type 2 diabetic patients: a randomized, double-blind, placebo-controlled trial. Journal of Functional Foods, 13, 240-249.
- Bamosa, A. O., et al. (2010). Effect of Nigella sativa seeds on the glycemic control of patients with type 2 diabetes mellitus. Indian Journal of Physiology and Pharmacology, 54(4), 344-354.
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