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Induction of an Inflammatory Response in Primary Hepatocyte Cultures from Mice
Published on: March 10, 2017
Naturally occurring antioxidant nutrients reduce inflammatory response in mice
Elena G Novoselova1, Sergey M Lunin, Tatyana V Novoselova
1Institute of Cell Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation. elenanov_06@mail.ru
European Journal of Pharmacology
|May 26, 2009
Summary
Dietary coenzyme Q(9), alpha-tocopherol, and beta-carotene significantly reduced inflammation in mice by suppressing key signaling pathways. This antioxidant-rich diet shows potential for novel therapeutic combinations to modulate immune responses.
Area of Science:
- Immunology
- Nutrition Science
- Biochemistry
Background:
- Acute inflammation, induced by lipopolysaccharide (LPS), triggers pro-inflammatory cytokine release.
- Fat-soluble antioxidants play a role in modulating immune responses.
- Understanding the impact of dietary antioxidants on inflammatory pathways is crucial for therapeutic development.
Purpose of the Study:
- To investigate the effects of a mixed dietary antioxidant regimen (coenzyme Q(9), alpha-tocopherol, beta-carotene) on immune cell activity and cytokine profiles during LPS-induced inflammation.
- To explore the in vivo and in vitro activity of these antioxidants in various model systems.
- To elucidate the molecular mechanisms underlying the antioxidant-mediated modulation of inflammatory signaling pathways.
Main Methods:
- Mice were fed a diet supplemented with coenzyme Q(9), alpha-tocopherol, and beta-carotene for 15 days before LPS injection.
- Immune cell activity (peritoneal macrophages, spleen lymphocytes) and blood cytokine profiles were analyzed.
- Western blotting was used to assess the phosphorylation status of NF-kappaB, I kappaB kinase, and SAPK/JNK signaling proteins.
- Expression of heat-shock protein 70 was evaluated.
Main Results:
- LPS-induced inflammation led to increased pro-inflammatory cytokines (TNF-alpha, IL-1alpha, IL-1beta, IL-2, IL-6, IFN-gamma) and IL-10.
- Antioxidant-rich diet significantly attenuated the inflammatory response to LPS.
- The diet suppressed NF-kappaB and SAPK/JNK signaling pathway activation.
- Expression of inducible heat-shock protein 70 was reduced in antioxidant-pretreated mice.
Conclusions:
- Dietary coenzyme Q(9), alpha-tocopherol, and beta-carotene effectively reduce LPS-induced inflammation in mice.
- These antioxidants exert their effects by inhibiting key inflammatory signaling pathways, including NF-kappaB and SAPK/JNK.
- Naturally occurring antioxidant nutrients hold promise for developing novel therapeutic strategies to manage inflammatory conditions.
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