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Long Term Intravital Multiphoton Microscopy Imaging of Immune Cells in Healthy and Diseased Liver Using CXCR6.Gfp Reporter Mice
Published on: March 24, 2015
Postnatal development of hepatic innate immune response
Valerie Le Rouzic1, Jennifer Corona, Heping Zhou
1Department of Biological Sciences, Seton Hall University, 400 South Orange Avenue, South Orange, NJ 07079, USA.
Inflammation
|October 28, 2010
Summary
Hepatic innate immunity in neonatal rats is underdeveloped, showing delayed responses to LPS. Immune function significantly develops during early postnatal life, impacting infection response.
Area of Science:
- Immunology
- Hepatology
- Developmental Biology
Background:
- The liver is a crucial immune organ, but its early postnatal immune development is poorly understood.
- Understanding hepatic immune maturation is vital for addressing neonatal infections.
Purpose of the Study:
- To characterize the development of hepatic innate immunity in rats during early postnatal life.
- To analyze the expression of key immune factors and the response to lipopolysaccharide (LPS) stimulation at different postnatal stages.
Main Methods:
- Quantitative analysis of mRNA expression for complement factors (C3, C9) and pattern recognition receptors (CD14, TLR-4, LBP) in rat livers at postnatal days 1, 21, and 70.
- Assessment of cytokine and chemokine induction kinetics following LPS stimulation in postnatal day 1 and 21 rat livers.
Main Results:
- Neonatal (P1) rat livers exhibited lower mRNA levels of C3, C9, CD14, and TLR-4 compared to older rats.
- Higher mRNA levels of lipopolysaccharide binding protein (LBP) were observed in P1 livers.
- Cytokine and chemokine induction following LPS stimulation was significantly delayed in P1 livers compared to P21 livers.
Conclusions:
- Hepatic innate immunity is deficient in neonatal rats.
- Significant development of liver immune function occurs during early postnatal life.
- These findings highlight the vulnerability of neonates to infections due to immature hepatic immunity.
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