Trial reportGrowth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society2018
The effect of growth hormone on bioactive IGF in overweight/obese women.
Trial report in Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00131378 (Growth Hormone, Cardiovascular Risk, and Visceral Adiposity), which is not on this map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Growth Hormone, Cardiovascular Risk, and Visceral Adiposity
Who cites it
4 citing papers in PubMed, 11 citations in OpenAlex.
- Sitagliptin Decreases Visceral Fat and Blood Glucose in Women With Polycystic Ovarian Syndrome.The Journal of clinical endocrinology and metabolism · 2020Trial
- The regulatory effects of growth hormone on adipose tissue at physiological and pathological levels and its relationship with obesity.International journal of obesity (2005) · 2026Review
- Reduced Growth Hormone Predicts Worsening Adipose Tissue Insulin Resistance in Adults with Obesity.Obesity facts · 2023Article
- Impact of BMI on peak growth hormone responses to provocative tests and therapeutic outcome in children with growth hormone deficiency.Scientific reports · 2019Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
Abstract
objectiveOverweight/obesity is characterized by decreased growth hormone (GH) secretion whereas circulating IGF-I levels are less severely reduced. Yet, the activity of the circulating IGF-system appears to be normal in overweight/obese subjects, as estimated by the ability of serum to activate the IGF-I receptor in vitro (bioactive IGF). We hypothesized that preservation of bioactive IGF in overweight/obese women is regulated by an insulin-mediated suppression of IGF-binding protein-1 (IGFBP-1) and IGFBP-2, and by suppression of IGFBP-3, mediated by low GH. We additionally hypothesized that increases in bioactive IGF would drive changes in body composition with low-dose GH administration.
designCross-sectional analysis and 3-month interim analysis of a 6-month randomized, placebo-controlled study of GH administration in 50 overweight/obese women without diabetes mellitus. Bioactive IGF (kinase receptor activation assay) and body composition (DXA) were measured.
resultsPrior to treatment, IGFBP-3 (r = -0.33, p = 0.02), but neither IGFBP-1 nor IGFBP-2, associated inversely with bioactive IGF. In multivariate analysis, lower IGFBP-3 correlated with lower peak stimulated GH (r = 0.45, p = 0.05) and higher insulin sensitivity (r = -0.74, p = 0.003). GH administration resulted in an increase in mean serum IGF-I concentrations (144 ± 56 to 269 ± 66 μg/L, p < 0.0001) and bioactive IGF (1.29 ± 0.39 to 2.60 ± 1.12 μg/L, p < 0.0001). The treatment-related increase in bioactive IGF, but not total IGF-I concentration, predicted an increase in lean mass (r = 0.31, p = 0.03) and decrease in total adipose tissue/BMI (r = -0.43, p = 0.003).
conclusionsOur data suggest that in overweight/obesity, insulin sensitivity and GH have opposing effects on IGF bioactivity through effects on IGFBP-3. Furthermore, increases in bioactive IGF, rather than IGF-I concentration, predicted GH administration-related body composition changes. CLINICAL TRIAL REGISTRATION NUMBER: NCT00131378.
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