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ADRA2A is involved in neuro-endocrine regulation of bone resorption [Elektronski vir]Mlakar, Vid ...Adrenergic stimulation is important for osteoclast differentiation and bone resorption. Previous research shows that this happens through [alpha]2-adrenergic receptor (AR), but there are conflicting ... evidence on presence and role of [alpha]2A-AR in bone. The aim of this study was to investigate the presence of [alpha]2A-AR and its involvement in neuro-endocrine signalling of bone remodelling in humans. Real-time polymerase chain reaction (PCR) and immunohistochemistry were used to investigate [alpha]2A-AR receptor presence and localization in bone cells. Functionality of rs553668 and rs1800544 single nucleotide polymorphism SNPs located in [alpha]2A-AR gene was analysed by qPCR expression on bone samples and luciferase reporter assay in human osteosarcoma HOS cells. Using real-timePCR, genetic association study between rs553668 A>G and rs1800544 C>GSNPs and major bone markers was performed on 661 Slovenian patients with osteoporosis. [alpha2A-AR is expressed in osteoblasts and lining cells but not in osteocytes. SNP rs553668 has a significant influence on [alpha]2A-AR mRNA level in human bone samples through the stability of mRNA. [alpha]2A-AR gene locus associates with important bone remodelling markers (BMD, CTX, Cathepsin K and pOC). The results of this study are providing comprehensive new evidence that [alpha]2A-AR is involved in neuro-endocrine signalling of bone turnover and development of osteoporosis. As shown by our results the neurological signalling is mediated through osteoblasts and result in bone resorption. Genetic study showed association of SNPs in [alpha]2A-AR gene locus with bone remodelling markers, identifying the individuals with higher risk of development of osteoporosis.Source: Journal of Cellular and Molecular Medicine [Elektronski vir]. - ISSN 1582-4934 (Vol. 19, issue 7, 2015, str. 1520-1529)Type of material - e-article ; adult, seriousPublish date - 2015Language - englishCOBISS.SI-ID - 3887217
Author
Mlakar, Vid |
Jurković Mlakar, Simona, 1980- |
Zupan, Janja, farmacevtka |
Komadina, Radko |
Preželj, Janez |
Marc, Janja
Topics
Osteoporoza |
Kosti |
osteoblasti |
resorpcija |
adrenergični receptorji alfa |
ADRA2A
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Mlakar, Vid | 25809 |
Jurković Mlakar, Simona, 1980- | 27741 |
Zupan, Janja, farmacevtka | 32306 |
Komadina, Radko | 19380 |
Preželj, Janez | 01989 |
Marc, Janja | 12189 |
Source: Personal bibliographies
and: SICRIS
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