Obesity and preterm birth: additive risks in the progression of kidney disease in children

Area of Science:

• Pediatric Nephrology
• Renal Disease Research
• Public Health

Background:

• Preterm birth is linked to reduced nephron mass, a risk factor for future kidney disease.
• Obesity is an emerging concern for pediatric kidney disease progression.
• Understanding the combined impact of preterm birth and obesity is crucial for early intervention.

Purpose of the Study:

• To investigate the independent and combined risks of obesity and preterm birth on kidney disease progression in children.
• To compare disease progression and renal histomorphometry in different pediatric groups.

Main Methods:

• Retrospective cohort study of 80 children with proteinuric kidney disease.
• Categorization into obese/non-obese and term/preterm birth groups.
• Analysis of disease progression, renal histomorphometry, and insulin resistance (HOMA-IR).

Main Results:

• Obese preterm children had a significantly higher risk of renal demise compared to obese term children (HR 2.4, P=0.04).
• Preterm birth was associated with reduced renal mass (OR 4.7, P=0.006), but obesity was not.
• Obesity led to glomerulomegaly in all obese children, irrespective of birth weight.

Conclusions:

• Obesity and preterm birth act as additive risk factors for kidney disease progression in children.
• Early identification and management of these risk factors are essential for improving long-term kidney health outcomes.
• The findings highlight the critical interplay between birth status and metabolic health in pediatric renal disease.