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Aim
To explore the phenotype and response to growth hormone in patients with heterozygous mutations in the insulin‐like growth factor I receptor gene (IGF1R).
Methods
Children with short stature, microcephaly, born SGA combined with biochemical sign of IGF‐I insensitivity were analysed for IGF1R mutations or deletions using Sanger sequencing and Multiple ligation‐dependent probe amplification analysis...
Growth plates are spatially polarized and structured into three histologically and functionally distinct layers—the resting zone (RZ), proliferative zone (PZ), and hypertrophic zone (HZ). With age, growth plates undergo functional and structural senescent changes including declines of growth rate, proliferation rate, growth plate height and cell number. To explore the mechanisms responsible for spatially-associated...
In mammals, the somatic growth rate is rapid during fetal and early postnatal life and then gradually declines and eventually stops. In search of the fundamental biological mechanism causing coordinated growth deceleration in multiple tissues, a network of imprinted genes was recently identified based on a coordinated decline in expression in several organs during postnatal growth. To explore a possible...
Longitudinal growth of long bones occurs at the growth plate by endochondral ossification. In the embryonic mouse, this process is regulated by Wnt signaling. Little is known about which members of the Wnt family of secreted signaling proteins might be involved in the regulation of the postnatal growth plate. We used microdissection and real-time PCR to study mRNA expression of Wnt genes in the mouse...
Fibroblast growth factor (FGF) signaling is essential for endochondral bone formation. Mutations cause skeletal dysplasias including achondroplasia, the most common human skeletal dysplasia. Most previous work in this area has focused on embryonic chondrogenesis. To explore the role of FGF signaling in the postnatal growth plate, we quantitated expression of FGFs and FGF receptors (FGFRs) and examined...
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