ArticleClinical endocrinology2012
The consequences of growth hormone-releasing hormone receptor haploinsufficiency for bone quality and insulin resistance.
Article in Clinical endocrinology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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.
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1 citing paper in PubMed, 4 citations in OpenAlex.
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10 authors at 3 institutions in 2 countries.
Funding
Abstract
objectiveGrowth hormone (GH)/insulin-like growth factor (IGF) axis and insulin are key determinants of bone remodelling. Homozygous mutations in the GH-releasing hormone receptor (GHRHR) gene (GHRHR) are a frequent cause of genetic isolated GH deficiency (IGHD). Heterozygosity for GHRHR mutation causes changes in body composition and possibly an increase in insulin sensitivity, but its effects on bone quality are still unknown. The objective of this study was to assess the bone quality and metabolism and its correlation with insulin sensitivity in subjects heterozygous for a null mutation in the GHRHR. PATIENTS AND
methodsA cross-sectional study was performed on 76 normal subjects (68·4% females) (N/N) and 64 individuals (64·1% females) heterozygous for a mutation in the GHRHR (MUT/N). Anthropometric features, quantitative ultrasound (QUS) of the heel, bone markers [osteocalcin (OC) and CrossLaps], IGF-I, glucose and insulin were measured, and homeostasis model assessment of insulin resistance (HOMA(IR) ) was calculated.
resultsThere were no differences in age or height between the two groups, but weight (P = 0·007) and BMI (P = 0·001) were lower in MUT/N. There were no differences in serum levels of IGF-I, glucose, T-score or absolute values of stiffness and OC, but insulin (P = 0·01), HOMA(IR) (P = 0·01) and CrossLaps (P = 0·01) were lower in MUT/N. There was no correlation between OC and glucose, OC and HOMA(IR) in the 140 individuals as a whole or in the separate MUT/N or N/N groups.
conclusionsThis study suggests that one allele mutation in the GHRHR gene has a greater impact on energy metabolism than on bone quality.
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