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Calcified Tissue International

, Volume 97, Issue 5, pp 495–505 | Cite as

Serum Circulating MicroRNAs as Biomarkers of Osteoporotic Fracture

  • Layla Panach
  • Damián Mifsut
  • Juan J. Tarín
  • Antonio Cano
  • Miguel Ángel García-PérezEmail author
Original Research

Abstract

Osteoporosis is a common skeletal disorder characterized by increased risk of bone fracture (BF) due to fragility. BFs, particularly hip fracture, are a major concern in health care because of the associated morbidity and mortality, mainly in the elderly. Lately the involvement of epigenetic mechanisms in the pathophysiology of many diseases has been recognized. In this context, the identification of microRNAs (miRNAs) specific to BF should represent a substantial step forward in diagnostics and therapeutics. The present study aimed to identify specific miRNAs in osteoporotic BF patients compared to those in osteoarthritic controls. In the profiling stage, total RNA was extracted from serum, two pools were prepared, and then retro-transcribed in triplicate. Levels of 179 serum miRNAs were analyzed by real-time PCR, and 42 of them showed significance (P < 0.05), and 12 passed the false discovery rate test for multiple comparisons. Six miRNAs were selected for the replication stage and individually analyzed in sera from 15 BF patients and 12 controls. Results showed that 3 miRNAs (miR-122-5p, miR-125b-5p, and miR-21-5p) were valuable upregulated biomarkers in BF with respect to controls and, significantly, their levels were not affected by hemolysis. For miR-21-5p, the difference detected between groups was independent of age (P = 0.005) and its levels correlated to those of CTx (r = 0.76; P < 0.00001), a marker of bone resorption. In conclusion, several miRNAs may be biomarkers of BF, particularly miR-21-5p. Further studies are needed in order to better characterize the levels of these miRNAs in other bone diseases and to elucidate the mechanism involved in the association of these three miRNAs with osteoporotic BF.

Keywords

miRNA Bone fracture Osteoporosis Biomarker 

Notes

Acknowledgments

The authors are indebted to Mrs. R. Aliaga and Dr. V. Ballester for their technical assistance in management of the patients and biochemical assays. Likewise, the authors are indebted to Drs. A. López Castel and JM Fernández-Costa, both from Valentia Biopharma (Valencia, Spain) for their excellent technical assistance regarding miRNA profiling and validation experiments. This work was supported by grant PI12/02582 from the Fondo de Investigación Sanitaria (FIS, Madrid, Spain), including funds from EU’s FEDER Program. Layla Panach is a predoctoral fellow from the Ministerio de Educación, Cultura y Deporte (Programa de Formación del Profesorado Universitario).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Human and Animal Rights and Informed Consent

The study was conducted according to the Helsinki Declaration of 2000 and was approved by the Clinical Research Ethics Committee of the Institute of Health Research, INCLIVA. All participants in the study read and signed an informed consent according to the regulations of INCLIVA.

Supplementary material

223_2015_36_MOESM1_ESM.docx (28 kb)
Supplementary material 1 (DOCX 27 kb)

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Layla Panach
    • 1
  • Damián Mifsut
    • 2
  • Juan J. Tarín
    • 3
  • Antonio Cano
    • 4
  • Miguel Ángel García-Pérez
    • 1
    • 5
    Email author
  1. 1.Research FoundationInstitute of Health Research INCLIVAValenciaSpain
  2. 2.Orthopedic Surgery and Traumatology, Clinic HospitalInstitute of Health Research INCLIVAValenciaSpain
  3. 3.Department of Functional Biology and Physical AnthropologyUniversity of ValenciaBurjassotSpain
  4. 4.Department of Pediatrics, Obstetrics and GynecologyUniversity of ValenciaValenciaSpain
  5. 5.Department of GeneticsUniversity of ValenciaBurjassotSpain

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