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Recent progress in congenital diarrheal disorders
Roberto Berni Canani1, Gianluca Terrin
1Department of Pediatrics and European Laboratory for the Investigation on Food Induced Diseases, University of Naples Federico II, Via Pansini 5, 80131, Naples, Italy. berni@unina.it
Insights
Congenital diarrheal disorders (CDD) are rare genetic enteropathies causing chronic diarrhea in infants. A new classification based on pathophysiology may improve clinical management of these complex conditions.
Area of Science:
- Pediatric Gastroenterology
- Genetics
- Molecular Biology
Background:
- Congenital diarrheal disorders (CDD) are rare genetic enteropathies.
- Infants present with chronic diarrhea, often requiring parenteral nutrition.
- Etiologies and prognoses for CDD are highly variable.
Purpose of the Study:
- To propose a novel classification system for congenital diarrheal disorders.
- To review recent advances in understanding CDD pathophysiology.
- To explore potential improvements in clinical approaches to CDD.
Main Methods:
- Literature review of recent advances in CDD research.
- Development of a new etiological and genetic classification system for CDD.
- Analysis of pathophysiological mechanisms underlying different CDD groups.
Main Results:
- Proposed classification categorizes CDD into four groups based on underlying defects: nutrient/electrolyte handling, enterocyte differentiation, enteroendocrine cell differentiation, and intestinal immune response.
- Highlights recent discoveries in the pathophysiology of these genetic enteropathies.
- Identifies areas for potential therapeutic and diagnostic advancements.
Conclusions:
- A refined classification of CDD based on genetic defects and pathophysiology is presented.
- Understanding these mechanisms is crucial for improving diagnosis and treatment.
- Further research into CDD pathophysiology promises better clinical outcomes for affected infants.
Abstract:
Congenital diarrheal disorders (CDD) are a group of rare enteropathies related to specific genetic defects. Infants with these disorders have chronic diarrhea, frequently requiring parenteral nutrition support. Etiologies and prognoses are variable. We propose a new classification of CDD into four groups, taking into account the specific etiology and genetic defect: 1) defects in digestion, absorption, and transport of nutrients and electrolytes; 2) disorders of enterocyte differentiation and polarization; 3) defects of enteroendocrine cell differentiation; and 4) dysregulation of the intestinal immune response. The present review focuses on the recent advances made in understanding the pathophysiology of CDD that could potentially improve the clinical approach to these conditions.
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