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Protective effect of myo-inositol hexaphosphate (phytate) on bone mass loss in postmenopausal women

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Abstract

Introduction

The objective of this paper was to evaluate the relationship between urinary concentrations of InsP6, bone mass loss and risk fracture in postmenopausal women.

Materials and methods

A total of 157 postmenopausal women were included in the study: 70 had low (≤0.76 μM), 42 intermediate (0.76–1.42 μM) and 45 high (≥1.42 μM) urinary phytate concentrations. Densitometry values for neck were measured at enrollment and after 12 months (lumbar spine and femoral neck), and 10-year risk fracture was calculated using the tool FRAX®.

Results

Individuals with low InsP6 levels had significantly greater bone mass loss in the lumbar spine (3.08 ± 0.65 % vs. 0.43 ± 0.55 %) than did those with high phytate levels. Moreover, a significantly greater percentage of women with low than with high InsP6 levels showed more than 2 % of bone mass loss in the lumbar spine (55.6 vs. 20.7 %). The 10-year fracture probability was also significantly higher in the low-phytate group compared to the high-phytate group, both in hip (0.37 ± 0.06 % vs 0.18 ± 0.04 %) and major osteoporotic fracture (2.45 ± 0.24 % vs 1.83 ± 0.11 %).

Discussion

It can be concluded that high urinary phytate concentrations are correlated with reduced bone mass loss in lumbar spine over 12 months and with reduced 10-year probability of hip and major osteoporotic fracture, indicating that increased phytate consumption can prevent development of osteoporosis.

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Abbreviations

SERMs:

Selective estrogen receptor modulators

FDA:

US food and drug administration

RANKL:

Receptor activator for nuclear factor κ B ligand

HRT:

Hormone replacement therapy

InsP6:

Myo-inositol hexaphosphate, phytate

HAP:

Hydroxyapatite

BMD:

Bone mineral density

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Acknowledgments

F.T. thanks the Ministerio de Ciencia e Innovación de España for a Torres Quevedo contract. This work was supported by the Conselleria d’Innovacio i Energia del Govern de les Illes Balears and by project grant no. CTQ2010-18271 from the Ministerio de Ciencia y Tecnologia de España.

Conflict of interest

F.G. and J.P. declare that they are inventors of a pending patent application based on some aspects of this work. F.T. is employee at Laboratoris Sanifit. J.P. is employee and stockholder at Laboratoris Sanifit.

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Authors and Affiliations

  1. Servicio de Prevención de Riesgos Laborales de GESMA (Gestión Sanitaria de Mallorca), Palma de Mallorca, Spain

    Ángel A. López-González

  2. Laboratory of Renal Lithiasis Research, Faculty of Sciences, University Institute of Health Sciences Research (IUNICS), University of Balearic Islands, 07122, Palma de Mallorca, Spain

    Félix Grases, Fernando Tur & Joan Perelló

  3. Servicio de Prevención de Riesgos Laborales, Administración del Govern de les Illes Balears, Islas Baleares, Spain

    Nieves Monroy

  4. Servicio de Medicina del Deporte. Consell Insular de Mallorca, Balearic Islands, Spain

    Bartolome Marí

  5. Servicio Médico de Correos, Valencia-Castellón, Spain

    Mª Teófila Vicente-Herrero

Authors
  1. Ángel A. López-González
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  2. Félix Grases
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  3. Nieves Monroy
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  4. Bartolome Marí
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  6. Fernando Tur
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  7. Joan Perelló
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Correspondence to Félix Grases.

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López-González, Á.A., Grases, F., Monroy, N. et al. Protective effect of myo-inositol hexaphosphate (phytate) on bone mass loss in postmenopausal women. Eur J Nutr 52, 717–726 (2013). https://doi.org/10.1007/s00394-012-0377-6

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  • DOI: https://doi.org/10.1007/s00394-012-0377-6

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