Baseline Body Composition in Prepubertal Short Stature Children with Severe and Moderate Growth Hormone Deficiency

Area of Science:

• Pediatric Endocrinology
• Body Composition Analysis
• Growth Hormone Deficiency

Background:

• Growth hormone deficiency (GHD) affects children's growth and development.
• Body composition changes are associated with hormonal imbalances.
• Differentiating severity of GHD is crucial for appropriate treatment.

Purpose of the Study:

• To compare body composition in short children with severe GHD versus moderate and no GHD.
• To assess the utility of body composition parameters in distinguishing GHD severity.

Main Methods:

• Evaluated 61 short children using height SDS, BMI Z-score, waist/height ratio, and body composition analysis (BIA).
• Measured GH secretion via overnight profile and stimulation tests, along with IGF-1 levels.
• Categorized children into severe GHD (GH ≤ 7.0 ng/mL) and moderate GHD (7.0 < peak GH < 10 ng/mL) groups.

Main Results:

• Severe GHD was diagnosed in 18% and moderate GHD in 26% of children.
• Children with severe GHD exhibited higher BMI Z-score, waist/height ratio, and fat percentage.
• Fat-free mass, predicted muscle mass, and total body water were significantly lower in severe GHD compared to moderate and no GHD groups.

Conclusions:

• Severe GHD, but not moderate GHD, is linked to significant body composition impairments.
• Body composition analysis serves as a valuable tool for differentiating between severe and moderate forms of GHD.