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Published on: March 1, 2011
High-magnesium concentration and cytokine production in human whole blood model
Wojciech Nowacki1, Corinne Malpuech-Brugère, Edmond Rock
1Department of Veterinary Prevention and Immunology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland.
Abstract:
The potential influence of magnesium (Mg) on inflammatory responses was assessed using an ex vivo model--human whole blood incubated with and without lipopolysaccharide (LPS). Addition of LPS leads to higher levels of cytokines including TNF-alpha and IL-6. No significant effect of Mg was observed following LPS stimulation whereas high concentration of Mg inhibited the baseline level (without LPS) of TNF-alpha and IL-6 production. This observation contrasts with that of a previous one on Mg-deficient animals. Therefore, the weak efficiency of increasing Mg concentration in this study on the whole blood from healthy volunteers suggests that the efficiency of Mg supplementation on cytokine production induced by endotoxin challenge depends on Mg status.
Insights
Magnesium (Mg) did not affect inflammatory cytokine production after endotoxin stimulation in healthy volunteers. However, high Mg concentrations reduced baseline levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-6 (IL-6).
Area of Science:
- Immunology
- Nutritional Science
- Biochemistry
Background:
- Inflammatory responses are critical in various physiological and pathological processes.
- Cytokines like TNF-alpha and IL-6 play key roles in mediating inflammation.
- Magnesium's role in modulating inflammatory pathways is not fully elucidated, with conflicting reports.
Purpose of the Study:
- To investigate the effect of magnesium (Mg) on inflammatory responses in an ex vivo human whole blood model.
- To determine if Mg influences cytokine production, specifically TNF-alpha and IL-6, in the presence or absence of lipopolysaccharide (LPS) stimulation.
Main Methods:
- Human whole blood samples were incubated ex vivo.
- Lipopolysaccharide (LPS) was used to stimulate inflammatory responses.
- Magnesium (Mg) was added at various concentrations.
- Levels of cytokines, including TNF-alpha and IL-6, were measured.
Main Results:
- LPS stimulation significantly increased TNF-alpha and IL-6 levels.
- Magnesium (Mg) did not significantly alter cytokine levels following LPS stimulation.
- High concentrations of Mg inhibited baseline (without LPS) production of TNF-alpha and IL-6.
- These findings contrast with studies involving Mg-deficient animals.
Conclusions:
- The impact of magnesium supplementation on endotoxin-induced cytokine production may depend on an individual's magnesium status.
- In healthy individuals with adequate Mg status, Mg supplementation may not significantly enhance the response to endotoxin challenge.
- Further research is needed to clarify the complex relationship between magnesium status and inflammatory responses.
