Abstract
Background Ferrum phosphoricum (FP) is prescribed as a homeopathic remedy to treat the early stages of fever and
inflammation in cases of colds or flu, muscle fatigue and anemia. We aimed to analyze
the molecular mechanisms of action of FP D12 on cell proliferation and mRNA expression
of iron metabolism, antioxidant defense and inflammation-related genes in mouse J774A.1
macrophages.
Methods Cell proliferation was examined using the MTT test. RT-qPCR analyses were performed
to estimate gene expression changes. Relative gene expression levels were calculated
using the 2–ΔΔCt method. The effect of treatment using FP D12 tablets was compared with that using
placebo tablets (PT).
Results FP D12 in low concentrations (0.0125 mg/mL to 0.025 mg/mL) significantly stimulated
proliferation of J774A.1 cells by up to 11% (p < 0.01) versus control untreated cells and by up to 40% (p < 0.01) versus PT-treated cells in the respective concentration. FP D12 versus PT
induced a significant increase in mRNA expression of ferritin light chain (Ftl1) (by 8-fold, p < 0.01), β-2-microglobulin (B2m) (by 2.5-fold, p < 0.05) and iron-responsive element binding protein 2 (Ireb2) (by 4-fold, p < 0.05), and induced a slight decrease in myosin IE (Myo1e) mRNA expression levels
(by 0.4-fold, p < 0.01) in macrophages. A highly significant (r2 = 0.99, p < 0.05) correlation was observed between Ireb2 and B2m transcription levels. Significant
stimulation of antioxidant enzyme Gpx-1 (by 1.27-fold, p < 0.01) in cells by 0.025 mg/mL FP D12, but a slight decrease (by 0.12-fold, p < 0.05) in 0.0125 mg/mL-treated cells, was observed. A significant increase in the
gene expression of IL-1β (by 3.5-fold, р < 0.05) in macrophages was also detected.
Conclusion Ferrum phosphoricum in D12 dilution potentially exhibits iron retention, antioxidant and immunomodulation
activities, possibly by modulating transcription levels of related genes in non-stimulated
mouse macrophages.
Keywords
ferrum phosphoricum
- high dilution - macrophages - proliferation - gene expression