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Updated: May 26, 2026

Comparative Analysis of Human Growth Hormone in Serum Using SPRi, Nano-SPRi and ELISA Assays
Published on: January 7, 2016
Insulin-like growth factor-1 (IGF-1) serum concentration among 7-year-old extremely low birth weight children--an
Przemko Kwinta1, Małgorzata Klimek, Małgorzata Wójcik
1Department of Pediatrics, Jagiellonian University Medical College, Cracow, Poland. kwintap@mp.pl
Insights
Short stature affects similar percentages of appropriate-for-gestational-age (AGA) and small-for-gestational-age (SGA) extremely low birth weight (ELBW) children at age 7. Lower weight and insulin growth factor-1 (IGF-1) levels are seen in short-stature ELBW children, indicating IGF-1
Area of Science:
- Pediatric Endocrinology
- Neonatology
- Growth and Development
Background:
- Extremely low birth weight (ELBW) infants are at risk for altered somatic development and metabolic profiles.
- Comparison of growth trajectories and metabolic markers between small-for-gestational-age (SGA) and appropriate-for-gestational-age (AGA) ELBW children is crucial.
Purpose of the Study:
- To compare somatic development, body composition, insulin growth factor-1 (IGF-1) serum concentration, and lipid profiles in 7-year-old SGA and AGA ELBW children versus full-term (FT) controls.
- To investigate the role of IGF-1 in growth restriction among ELBW survivors.
Main Methods:
- Evaluated 57 AGA ELBW, 24 SGA ELBW children, and 37 age- and sex-matched FT controls.
- Assessed somatic development (height, weight, head circumference), body composition (triceps skin fold, BMI), serum IGF-1, and lipid profiles.
Main Results:
- Short stature (< 3rd percentile) occurred in similar proportions of AGA and SGA ELBW children.
- Short-stature ELBW children (both AGA and SGA) exhibited significantly lower weight and IGF-1 levels compared to normal-stature peers.
- SGA short-stature children also showed significantly higher total and LDL cholesterol levels.
Conclusions:
- Short stature is prevalent in both AGA and SGA ELBW survivors at age 7.
- Significantly lower weight and IGF-1 levels in short-stature ELBW children suggest IGF-1's involvement in prolonged growth restriction.
- These findings highlight the importance of monitoring growth and IGF-1 in ELBW populations.
Background:
The study aim was to compare somatic development, body composition, insulin growth factor-1 (IGF-1) serum concentration and serum lipid profile between small-for-gestational-age (SGA) and appropriate-for-gestational-age (AGA) 7-year-old extremely low birth weight (ELBW) children and full-term (FT) controls.
Materials And Methods:
Fifty-seven AGA ELBW children [mean birth weight (BW) 850 g and mean gestational age (GA) 26.4 weeks] and 24 SGA ELBW children (mean BW 833 g, mean GA 29.5 weeks) were evaluated. The control group included 37 age- and sex-matched FT children from one outpatient center.
Results:
Nine AGA and four SGA were found to have short stature defined as height < 3rd percentile for chronological age (p = 0.9). In the AGA cohort, the results of weight, head circumference, triceps skin fold and body mass index (BMI) measurements were significantly reduced in the short-stature subgroup. IGF-1 serum concentrations differed significantly between short-stature and normal-stature subgroups (121 vs. 193 ng/mL; p = 0.02). In the SGA cohort, weight and serum concentrations of total cholesterol (5.03 vs. 4.26 mmol/L; p = 0.04), LDL cholesterol (3.24 vs. 2.38 mmol/L; p = 0.01) and IGF-1 (113 vs. 211 ng/mL; p = 0.01) differed significantly between the short-stature and normal-stature subgroups.
Conclusions:
Short stature at the age of 7 years was diagnosed in a similar percentage of AGA and SGA former ELBW infants. In both cohorts short-stature children have significantly lower weight and serum IGF-1 levels. IGF-1 seems to be involved in prolonged growth restriction among ELBW infants, regardless of whether they were AGA or SGA.
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