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European Spine Journal

, Volume 27, Issue 7, pp 1614–1622 | Cite as

Diabetes mellitus is associated with increased elastin fiber loss in ligamentum flavum of patients with lumbar spinal canal stenosis: results of a pilot histological study

  • Shai Shemesh
  • Eliezer Sidon
  • Efrat Kaisler
  • Dimitry Sheinis
  • Steven Velkes
  • Nissim Ohana
  • Dafna Benayahu
Original Article

Abstract

Purpose

Lumbar spinal canal stenosis (LSCS) is associated with fibrosis, decreased elastin-to-collagen ratio, and hypertrophy of the ligamentum flavum (LF). Diabetes mellitus (DM) is known to cause metabolic disturbances within the extracellular matrix in multiple tissues. These alterations may play a major role in the severity of clinical symptoms of LSCS affecting diabetic patients. We aimed to examine the hypothesis that DM may contribute to the LF changes seen in patients with LSCS.

Methods

The study cohort included 29 patients: 23 with LSCS (10 with DM vs. 13 without DM) as well as six patients with lumbar disc herniation (LDH). Surgical LF specimens were retrieved for histological assessment. Morphologic quantification of confocal microscopy images using fast Fourier transform analysis allowed us to compare anisotropy and elastin fiber orientation between groups.

Results

There was a significant positive correlation between fasting plasma glucose values and degree of elastin degradation (r = 0.36, p = 0.043). The diabetic patients with LSCS showed a significantly greater loss of elastic fibers (2.3 ± 0.9 vs. 1.5 ± 0.55, p = 0.009), although fibrosis was shown to be similar (1.44 ± 0.7 vs. 1.43 ± 0.88, p = 0.98). There was no significant difference in the degree of calcification in the LSCS group between patients with and without diabetes (1.71 vs. 2.05%, p = 0.653). Fiber orientation was found to be less homogenous in the LSCS compared with the LDH group, although not significantly affected by DM.

Conclusions

The present study points to a significant contribution of DM to the loss of elastin fibers that occurs in the LF of patients with LSCS.

Keywords

Ligamentum flavum Elastin Diabetes mellitus Lumbar spinal stenosis 

Notes

Acknowledgements

The study was supported by a research grant obtained from the research authority at the Rabin Medical Center.

Author contributions

All authors have demonstrated (1) substantial contributions to research design, or the acquisition, analysis or interpretation of data; (2) drafting the paper or revising it critically; (3) approval of the submitted and final versions.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Orthopedic SurgeryBeilinson Campus, Rabin Medical CenterPetach TikvaIsrael
  2. 2.Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
  3. 3.Department of Cell and Developmental Biology, Sackler School of MedicineTel Aviv UniversityTel AvivIsrael

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