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Magnesium sulfate increases intracellular magnesium reducing inflammatory cytokine release in neonates
Haruka Suzuki-Kakisaka1, Jun Sugimoto, Manas Tetarbe
1Department of Reproductive Biology, Case Western Reserve University School of Medicine, Cleveland, OH, USA.
Problem:
Magnesium sulfate (MgSO4 ) exposure reduces the risk of cerebral palsy. As neonatal inflammatory cytokine levels strongly correlate with neurologic outcome, we hypothesize that MgSO4 decreases inflammatory cytokine production.
Method Of Study:
We assessed the effect of MgSO4 on cellular magnesium levels, cytokine production, and release within THP-1 and cord blood mononuclear cells.
Results:
MgSO4 exposure increased intracellular magnesium levels, reducing the frequency of THP-1 cells producing IL-1β, IL-8, and TNF-α following LPS stimulation. Significant reductions in the frequency of neonatal monocytes producing TNF-α (48%) and IL-6 (37%) were seen following LPS stimulation, and MgSO4 also significantly decreased the frequency of monocytes producing TNF-α (35%) under basal conditions. Decreased cytokine production was confirmed via ELISA, demonstrating a sustained effect and dose response. Magnesium also reduced cytokine production following stimulation with TLR ligands representing obstetrical infections (group B Streptococcus and Mycoplasma) and in preterm neonatal monocytes.
Conclusion:
MgSO4 increases intracellular magnesium, reducing inflammatory cytokine production and release, potentially elucidating the mechanism by which MgSO4 prevents cerebral palsy, eclampsia, and preterm birth.
Insights
Magnesium sulfate (MgSO4) boosts intracellular magnesium, lowering inflammatory cytokine production. This may explain how MgSO4 reduces risks of cerebral palsy and preterm birth.
Area of Science:
- Neuroscience
- Immunology
- Pharmacology
Background:
- Neonatal inflammatory cytokine levels correlate with neurological outcomes.
- Magnesium sulfate (MgSO4) administration is linked to reduced cerebral palsy risk.
Purpose of the Study:
- To investigate the effect of MgSO4 on inflammatory cytokine production.
- To determine if MgSO4 influences intracellular magnesium levels and cytokine release.
Main Methods:
- Assessed MgSO4's impact on cellular magnesium in THP-1 and cord blood cells.
- Measured cytokine production (IL-1β, IL-8, TNF-α, IL-6) and release post-stimulation.
Main Results:
- MgSO4 increased intracellular magnesium, reducing inflammatory cytokine production in THP-1 cells.
- Significant reductions in TNF-α and IL-6 were observed in neonatal monocytes.
- Effect demonstrated sustained action and dose-dependency, even with infection-related stimuli.
Conclusions:
- MgSO4 enhances intracellular magnesium, suppressing inflammatory cytokine production and release.
- This mechanism may underlie MgSO4's protective effects against cerebral palsy, eclampsia, and preterm birth.
