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Reduced myelinated nerve fibre and endoneurial capillary densities in the forearm of diabetic and non-diabetic patients with carpal tunnel syndrome.

Thomsen, Niels LU ; Mojaddidi, Moaz; Malik, Rayaz and Dahlin, Lars LU (2009) In Acta Neuropathologica 118. p.785-791
Abstract
The underlying basis of carpal tunnel syndrome (CTS) and the basis of its increased incidence in diabetes are unknown. We have quantified pathology in an uncompressed nerve (posterior interosseous nerve, PIN) in the forearm between diabetic and non-diabetic patients with CTS and control subjects. In an age- and gender-matched series, 26 diabetic patients with CTS and 20 non-diabetic patients with CTS underwent biopsy of the PIN at the time of surgical carpal tunnel release. Control subjects consisted of ten PIN biopsies taken postmortem and three biopsies taken at the time of wrist surgery. We found PIN myelinated nerve fibre density significantly reduced in diabetic (mean 5,373/mm(2) [95% confidence interval, 4,835-5,911]) and... (More)
The underlying basis of carpal tunnel syndrome (CTS) and the basis of its increased incidence in diabetes are unknown. We have quantified pathology in an uncompressed nerve (posterior interosseous nerve, PIN) in the forearm between diabetic and non-diabetic patients with CTS and control subjects. In an age- and gender-matched series, 26 diabetic patients with CTS and 20 non-diabetic patients with CTS underwent biopsy of the PIN at the time of surgical carpal tunnel release. Control subjects consisted of ten PIN biopsies taken postmortem and three biopsies taken at the time of wrist surgery. We found PIN myelinated nerve fibre density significantly reduced in diabetic (mean 5,373/mm(2) [95% confidence interval, 4,835-5,911]) and non-diabetic (6,617/mm(2) [5,697-7,537]) patients with CTS compared to control subjects (9,109/mm(2) [7,967-10,250], P < 0.001). Furthermore, diabetic patients had a significantly lower density than non-diabetic patients (P < 0.03). Endoneurial capillary density was also reduced in diabetic (58/mm(2) [50-66]) and non-diabetic (67/mm(2) [55-78]) patients compared to control subjects (86/mm(2) [72-101], P < 0.02) with no difference between diabetic and non-diabetic patients with CTS. Our results suggest that a reduction in myelinated nerve fibre and capillary densities may predispose patients, particularly those with diabetes, to develop CTS. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Neuropathologica
volume
118
pages
785 - 791
publisher
Springer
external identifiers
  • WOS:000271808600007
  • PMID:19641929
  • Scopus:71449119702
ISSN
1432-0533
DOI
10.1007/s00401-009-0578-0
language
English
LU publication?
yes
id
a5de77fb-ea05-4d8d-aea1-018979a22cc2 (old id 1470225)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19641929?dopt=Abstract
date added to LUP
2009-09-04 10:45:28
date last changed
2017-01-01 07:47:04
@article{a5de77fb-ea05-4d8d-aea1-018979a22cc2,
  abstract     = {The underlying basis of carpal tunnel syndrome (CTS) and the basis of its increased incidence in diabetes are unknown. We have quantified pathology in an uncompressed nerve (posterior interosseous nerve, PIN) in the forearm between diabetic and non-diabetic patients with CTS and control subjects. In an age- and gender-matched series, 26 diabetic patients with CTS and 20 non-diabetic patients with CTS underwent biopsy of the PIN at the time of surgical carpal tunnel release. Control subjects consisted of ten PIN biopsies taken postmortem and three biopsies taken at the time of wrist surgery. We found PIN myelinated nerve fibre density significantly reduced in diabetic (mean 5,373/mm(2) [95% confidence interval, 4,835-5,911]) and non-diabetic (6,617/mm(2) [5,697-7,537]) patients with CTS compared to control subjects (9,109/mm(2) [7,967-10,250], P &lt; 0.001). Furthermore, diabetic patients had a significantly lower density than non-diabetic patients (P &lt; 0.03). Endoneurial capillary density was also reduced in diabetic (58/mm(2) [50-66]) and non-diabetic (67/mm(2) [55-78]) patients compared to control subjects (86/mm(2) [72-101], P &lt; 0.02) with no difference between diabetic and non-diabetic patients with CTS. Our results suggest that a reduction in myelinated nerve fibre and capillary densities may predispose patients, particularly those with diabetes, to develop CTS.},
  author       = {Thomsen, Niels and Mojaddidi, Moaz and Malik, Rayaz and Dahlin, Lars},
  issn         = {1432-0533},
  language     = {eng},
  pages        = {785--791},
  publisher    = {Springer},
  series       = {Acta Neuropathologica},
  title        = {Reduced myelinated nerve fibre and endoneurial capillary densities in the forearm of diabetic and non-diabetic patients with carpal tunnel syndrome.},
  url          = {http://dx.doi.org/10.1007/s00401-009-0578-0},
  volume       = {118},
  year         = {2009},
}