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Exogenous growth hormone levels predict attentional performance: a preliminary report.
Journal of Developmental and Behavioral Pediatrics : JDBP
|October 1, 1985
Summary
Synthetic human growth hormone (GH) did not directly improve attention in GH-deficient children. However, higher GH levels 12 hours post-injection correlated with improved attention, suggesting potential benefits with prolonged use.
Area of Science:
- Pediatric Endocrinology
- Neuroscience
Background:
- Synthetic human growth hormone (GH) is nearing commercial availability, raising concerns about its widespread use and potential adverse effects.
- Understanding the impact of GH on cognitive functions like attention is crucial for assessing its therapeutic benefits and risks.
Purpose of the Study:
- To investigate the effects of human growth hormone (GH) administration on the attention of GH-deficient children.
- To determine if GH levels correlate with attention performance in pediatric patients.
Main Methods:
- A double-blind, placebo-controlled study involving eight GH-deficient children (ages 8.7-14.1 years).
- Baseline attention was established after suspending GH treatment.
- Participants received GH (0.1 units/kg) or placebo in counterbalanced 2-week periods.
- GH levels were measured 12 hours post-injection, and attention was assessed at the end of each period.
Main Results:
- GH treatment did not significantly alter attention scores compared to baseline or placebo.
- Children with high GH levels (14 +/- 2.12 ng/ml) 12 hours post-injection demonstrated superior attention compared to those with low GH levels (3.5 +/- 1.12 ng/ml).
- Attention performance under GH treatment varied significantly based on individual GH levels.
Conclusions:
- Short-term GH administration may not directly enhance attention in GH-deficient children.
- Sustained higher levels of exogenous GH, indicated by 12-hour post-injection measurements, may be associated with improved attention.
- The findings suggest that the duration of GH's effect (half-life) could be a key factor in its potential cognitive benefits, warranting further investigation into prolonged therapeutic use.