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- Brandt, J., et al.
(författare)
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Acutely-dissociated Schwann cells used in tendon autografts for bridging nerve defects in rats: a new principle for tissue engineering in nerve reconstruction
- 2005
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Ingår i: Scand J Plast Reconstr Surg Hand Surg. - 0284-4311. ; 39:6, s. 321-5
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Tidskriftsartikel (refereegranskat)abstract
- A new method of acute dissociation of Schwann cells was used to study the effect of addition of such cells to a tendon autograft--a recently-described graft material--on peripheral nerve regeneration in rats. Autologous Schwann cells were obtained from enzymatic dissociation of predegenerated nerves. The tendon autografts were supplied with Schwann cells through brief in vitro coincubation. Schwann cell-free tendon autografts were used as controls. Axonal outgrowth was measured immunohistochemically after four, seven, and 10 days. At seven days, outgrowth was significantly longer in the pretreated autografts. The use of acutely-dissociated Schwann cells is a new approach to tissue engineering in nerve reconstruction, and may abolish the need for time-consuming culture of Schwann cells.
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- Dahlin, Lars, et al.
(författare)
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Sequelae following sural nerve biopsy in type 1 diabetic subjects.
- 2008
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Ingår i: Acta Neurologica Scandinavica. - : Hindawi Limited. - 1600-0404 .- 0001-6314. ; 118, s. 193-197
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Tidskriftsartikel (refereegranskat)abstract
- Objectives - To detect post-operative sequelae of sural nerve biopsy. Materials and methods-- A questionnaire mailed to type 1 diabetic patients (n = 24; male/female 23/1; reply n = 23) 2 years after biopsy. Results - Type 1 diabetic patients (age 56 [11]; median [interquartile range]) had a long duration of diabetes (DM; 20 [19] years) and all had neuropathy. Three out of 24 patients developed infection (two superficial and one deep) and one had a post-operative bleeding. Less frequent pain among the patients were reported from one centre. About one-third or more of the patients still complained of pain, mostly mild, in the biopsy area and paraesthesia in the foot 2 years after surgery. More than two-thirds of the patients were reluctant for further biopsy; a crucial information in drug trial planning. Conclusions - Sequelae of a sural nerve biopsy occur in type 1 DM. The risk for wound infections should be considered.
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- Salata, L.A., et al.
(författare)
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Osseointegration of oxidized and turned implants in circumferential bone defects with and without adjunctive therapies: an experimental study on BMP-2 and autogenous bone graft in the dog mandible
- 2007
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Ingår i: INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY. - : Elsevier BV. - 0901-5027. ; 36:1, s. 62-71
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to compare the integration and implant stability of turned and oxidized titanium implants when placed in experimental bone defects with autogenous bone graft, BMP-2 or without adjunctive therapy. Four defects were prepared on each side of the mandible of 12 mongrel dogs five months after tooth extractions. Implants with turned and oxidized surfaces were placed in the defects. The circumferential gaps were filled with either autogenous bone grafts, a BMP-allogeneic dog mixture in a thermoplastic carrier, carrier alone or left without any treatment (control). There were no statistically significant differences between control and treated sites, neither for turned nor for oxidized implants with regard to histomorphometric measurements in ground sections and to implant stability as measured with resonance frequency analysis (RFA) after 4 and 12 weeks of healing. However, oxidized implants showed a significantly higher stability after 4 weeks and a tendency (p < 0.1) of that after 12 weeks. Histomorphometry showed more bone contacts for oxidized than for turned implants. It is concluded that oxidized implants gain stability more rapidly and integrate with more bone contacts than implants with a turned surface when placed in bone defects.
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- Thrainsdottir, Soley, et al.
(författare)
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Sural nerve biopsy may predict future nerve dysfunction.
- 2009
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Ingår i: Acta Neurologica Scandinavica. - : Hindawi Limited. - 1600-0404 .- 0001-6314. ; 120, s. 38-46
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Tidskriftsartikel (refereegranskat)abstract
- Thrainsdottir S, Malik RA, Rosén I, Jakobsson F, Bakhtadze E, Petersson J, Sundkvist G, Dahlin LB. Sural nerve biopsy may predict future nerve dysfunction. Acta Neurol Scand: DOI: 10.1111/j.1600-0404.2008.01118.x. (c) 2008 The Authors Journal compilation (c) 2008 Blackwell Munksgaard.Objective - Sural nerve pathology in peripheral neuropathy shows correlation with clinical findings and neurophysiological tests. The aim was to investigate progression of nerve dysfunction over time in relation to a baseline nerve biopsy. Methods - Baseline myelinated nerve fiber density (MNFD) was assessed in sural nerve biopsies from 10 men with type 2 diabetes, 10 with impaired and 10 with normal glucose tolerance. Nerve conduction and quantitative perception thresholds were estimated at baseline and follow-up (7-10 years later). Results - Subjects with low MNFD (
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