Increased systemic microbial translocation is associated with depression during early pregnancy

Area of Science:

• Immunology
• Microbiology
• Reproductive Health

Background:

• Microbial translocation, a marker of mucosal permeability, is linked to systemic inflammation.
• Depression in pregnancy is associated with elevated inflammatory markers.
• The relationship between depression during pregnancy and microbial translocation remains unexplored.

Purpose of the Study:

• To investigate plasma levels of lipopolysaccharide (LPS), a marker of microbial translocation, in pregnant women with depression.
• To compare LPS levels in depressed pregnant women with healthy controls during early gestation, late gestation, and postpartum.

Main Methods:

• Plasma samples were collected from depressed pregnant women and healthy controls at 8-12 weeks gestation, 24-28 weeks gestation, and 6-8 weeks postpartum.
• Plasma levels of lipopolysaccharide (LPS) were measured.
• Plasma levels of pro-inflammatory cytokines, including TNF-α and MCP/CCL2, were assessed.

Main Results:

• Plasma LPS levels were significantly elevated in depressed mothers during 8-12 weeks gestation compared to healthy controls.
• LPS levels decreased significantly at 24-28 weeks gestation and 6-8 weeks postpartum in both groups.
• Pro-inflammatory cytokines (TNF-α and MCP/CCL2) were significantly increased in depressed subjects during early pregnancy.

Conclusions:

• Microbial translocation is increased in depressed women during early pregnancy.
• This elevation is associated with higher levels of pro-inflammatory cytokines.
• These findings suggest a potential link between depression, gut permeability, and inflammation in early pregnancy.