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Culturing and Measuring Fetal and Newborn Murine Long Bones
Published on: April 26, 2019
PTHR1 polymorphisms influence BMD variation through effects on the growing skeleton
Carles Vilariño-Güell1, Lisa J Miles, Emma L Duncan
1Institute of Musculoskeletal Sciences, Botnar Research Centre, Nuffield Orthopaedic Centre, University of Oxford, Headington, Oxford, UK.
Calcified Tissue International
|September 22, 2007
Summary
Genetic variations in the PTHR1 gene are linked to bone mineral density (BMD) in younger adults. These PTHR1 gene polymorphisms influence peak bone mass attainment, impacting skeletal health.
Area of Science:
- Genetics
- Bone Biology
- Osteoporosis Research
Background:
- Bone mineral density (BMD) is a key determinant of skeletal health and fracture risk.
- Genetic factors play a significant role in regulating BMD and peak bone mass.
- The parathyroid hormone receptor 1 (PTHR1) gene is a potential candidate for influencing BMD.
Purpose of the Study:
- To investigate the association between polymorphisms in the PTHR1 gene and BMD.
- To determine if PTHR1 gene variations affect peak bone mass attainment or bone loss.
- To identify specific PTHR1 polymorphisms and haplotypes associated with BMD variations.
Main Methods:
- Screening of the PTHR1 gene (exons, intron-exon boundaries, promoter region) for polymorphisms using dHPLC and sequencing.
- Genotyping of selected single-nucleotide polymorphisms (SNPs) and a tetranucleotide repeat in an osteoporosis family cohort and the ALSPAC cohort.
- Statistical association analyses were performed to link genotypes and haplotypes with BMD measures and height.
Main Results:
- Eleven SNPs, one tetranucleotide repeat, and one tetranucleotide deletion were identified in the PTHR1 gene.
- Association between lumbar spine BMD and a functional tetranucleotide repeat (U4) in the PTHR1 promoter was observed (P = 0.042).
- Haplotypes of PTHR1 polymorphisms were associated with lumbar spine, femoral neck, and total hip BMD in younger individuals (16-39 years) and with height and BMD in the ALSPAC cohort.
Conclusions:
- PTHR1 gene variations are associated with BMD, particularly in younger adults.
- These findings suggest that PTHR1 plays a role in the attainment of peak bone mass.
- Further research into PTHR1's function in bone metabolism is warranted.
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