Immunological aspects of necrotizing enterocolitis models: a review

Area of Science:

• Neonatal immunology
• Gastroenterology
• Pathogenesis research

Background:

• Necrotizing enterocolitis (NEC) is a severe intestinal disease affecting preterm infants.
• Its exact pathogenesis is multifactorial and not fully understood, involving microbiome, immune immaturity, feeding, and microcirculation issues.
• High mortality rates underscore the urgent need for better understanding and treatment.

Purpose of the Study:

• To review current animal and in vitro models used to study the immunological aspects of NEC pathogenesis.
• To provide insights into cellular and molecular mechanisms underlying NEC.

Main Methods:

• Review of existing literature on NEC models.
• Focus on models investigating immunological factors in NEC.
• Analysis of cellular and molecular pathways.

Main Results:

• The pathogenesis involves a pathological microbiome, immature immune response, enteral feeding, impaired microcirculation, and potential ischemia-reperfusion injury.
• Intestinal hyperinflammation is driven by mucosal barrier immaturity and increased Toll-like receptor 4 (TLR4) expression.
• Deficiency in counter-regulatory mediators exacerbates the condition.

Conclusions:

• Current NEC models are crucial for elucidating complex immunological mechanisms.
• Further research using these models may lead to improved therapeutic strategies for NEC.
• Understanding NEC pathogenesis at a cellular and molecular level is key to reducing infant mortality.