Maternal obesity and inflammatory mediators: A controversial association

Area of Science:

• Reproductive biology
• Immunology
• Metabolic disorders

Background:

• Maternal obesity is a growing concern in human pregnancy.
• The relationship between maternal obesity and systemic inflammation is not fully understood.
• Inflammatory mediators may play a role in pregnancy complications associated with obesity.

Purpose of the Study:

• To systematically review recent literature on maternal obesity and inflammatory mediators.
• To identify key inflammatory mediators investigated in relation to maternal obesity.
• To summarize current evidence on the association between maternal obesity and specific inflammatory markers.

Main Methods:

• Medline database search for studies published in recent years.
• Inclusion of studies focusing on obesity, human pregnancy, and inflammatory mediators.
• Analysis of 30 selected studies with varying designs and participant characteristics.

Main Results:

• Leptin, tumor necrosis factor-alpha (TNF-α), and interleukin (IL)-6 were most frequently studied.
• Consistent associations were found between maternal obesity and leptin and C-reactive protein (CRP) levels.
• Evidence for associations with IL-6, TNF-α, monocyte chemoattractant protein-1 (MCP-1), adiponectin, and resistin remains controversial.

Conclusions:

• While leptin and CRP show a clear link to maternal obesity, other inflammatory mediators present a more complex picture.
• Current research has limitations including varied study designs and sample collection timing.
• Further high-quality research is necessary to elucidate the physiopathological mechanisms linking maternal obesity and inflammation during pregnancy.