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Hazer Rosberg DB, Stenberg L, Mahlapuu M, Dahlin LB. PXL01 alters macrophage response with no effect on axonal outgrowth or Schwann cell response after nerve repair in rats. Regen Med 2024; 19:327-343. [PMID: 38957920 PMCID: PMC11346556 DOI: 10.1080/17460751.2024.2361515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/23/2024] [Indexed: 07/04/2024] Open
Abstract
Background: Adjunctive pharmacological treatment may improve nerve regeneration. We investigated nerve regeneration processes of PXL01 - a lactoferrin-derived peptide - after repair of the sciatic nerve in healthy Wistar rats.Materials & methods: PXL01, sodium hyaluronate (carrier) or sodium chloride was administered around the repair. After 6 days axonal outgrowth, Schwann cell response, pan- (CD68) and pro-healing (CD206) macrophages in sciatic nerve, sensory neuronal response in dorsal root ganglia (DRG) and expression of heat shock protein 27 (HSP27) in sciatic nerves and DRGs were analyzed.Results: Despite a lower number of pan-macrophages, other investigated variables in sciatic nerves or DRGs did not differ between the treatment groups.Conclusion: PLX01 applied locally inhibits inflammation through pan-macrophages in repaired sciatic nerves without any impact on nerve regeneration or pro-healing macrophages.
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Affiliation(s)
- Derya Burcu Hazer Rosberg
- Department of Translational Medicine – Hand Surgery, Lund University, Skåne University Hospital, SE-20502, Malmö, Sweden
- Department of Hand Surgery, Skåne University Hospital, MalmöSE-20502, Sweden
| | - Lena Stenberg
- Department of Translational Medicine – Hand Surgery, Lund University, Skåne University Hospital, SE-20502, Malmö, Sweden
| | - Margit Mahlapuu
- Department of Chemistry & Molecular Biology, Göteborg University , SE-40530, Göteborg, Sweden
| | - Lars B Dahlin
- Department of Translational Medicine – Hand Surgery, Lund University, Skåne University Hospital, SE-20502, Malmö, Sweden
- Department of Hand Surgery, Skåne University Hospital, MalmöSE-20502, Sweden
- Department of Biomedical & Clinical Sciences, Linköping University, LinköpingSE-58183, Sweden
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Dahlin LB. The Dynamics of Nerve Degeneration and Regeneration in a Healthy Milieu and in Diabetes. Int J Mol Sci 2023; 24:15241. [PMID: 37894921 PMCID: PMC10607341 DOI: 10.3390/ijms242015241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Appropriate animal models, mimicking conditions of both health and disease, are needed to understand not only the biology and the physiology of neurons and other cells under normal conditions but also under stress conditions, like nerve injuries and neuropathy. In such conditions, understanding how genes and different factors are activated through the well-orchestrated programs in neurons and other related cells is crucial. Knowledge about key players associated with nerve regeneration intended for axonal outgrowth, migration of Schwann cells with respect to suitable substrates, invasion of macrophages, appropriate conditioning of extracellular matrix, activation of fibroblasts, formation of endothelial cells and blood vessels, and activation of other players in healthy and diabetic conditions is relevant. Appropriate physical and chemical attractions and repulsions are needed for an optimal and directed regeneration and are investigated in various nerve injury and repair/reconstruction models using healthy and diabetic rat models with relevant blood glucose levels. Understanding dynamic processes constantly occurring in neuropathies, like diabetic neuropathy, with concomitant degeneration and regeneration, requires advanced technology and bioinformatics for an integrated view of the behavior of different cell types based on genomics, transcriptomics, proteomics, and imaging at different visualization levels. Single-cell-transcriptional profile analysis of different cells may reveal any heterogeneity among key players in peripheral nerves in health and disease.
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Affiliation(s)
- Lars B. Dahlin
- Department of Translational Medicine—Hand Surgery, Lund University, SE-205 02 Malmö, Sweden; ; Tel.: +46-40-33-17-24
- Department of Hand Surgery, Skåne University Hospital, SE-205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, SE-581 83 Linköping, Sweden
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3
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Bergsten E, Rydberg M, Dahlin LB, Zimmerman M. Carpal Tunnel Syndrome and Ulnar Nerve Entrapment at the Elbow Are Not Associated With Plasma Levels of Caspase-3, Caspase-8 or HSP27. Front Neurosci 2022; 16:809537. [PMID: 35310100 PMCID: PMC8931660 DOI: 10.3389/fnins.2022.809537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Nerve compression disorders, such as carpal tunnel syndrome (CTS) and ulnar entrapment at the elbow (UNE), may be associated with apoptosis and neuroprotective mechanisms in the peripheral nerve that may be detected by biomarkers in the blood. The relationships between CTS and UNE and two biomarkers of apoptosis, i.e., caspase-3 and caspase-8, and the neuroprotective factor Heat Shock Protein 27 (HSP27) in plasma were examined in a population-based cohort. Method The biomarkers caspase-3, caspase-8 and HSP27 were measured in plasma at inclusion of 4,284 study participants aged 46-68 years in the population-based Malmö Diet and Cancer study (MDCS). End-point retrieval was made from national registers concerning CTS and UNE. Independent t-test was used to examine the association between caspase-3, caspase-8 and HSP27 plasma levels and incidence of CTS and UNE. Cox proportional hazards regression was used to investigate if plasma levels of caspase-3, caspase-8 and HSP27 affected time to diagnosis of CTS or UNE. Results During the mean follow-up time of 22 years, 189/4,284 (4%) participants were diagnosed with CTS and 42/4,284 (1%) were diagnosed with UNE. No associations were found between incident CTS or UNE and the biomarkers caspase-3, caspase-8 and HSP27 in plasma. Conclusion The apoptotic biomarkers caspase-3 and caspase-8 and the neuroprotective factor HSP27 in plasma, factors conceivably related to a nerve injury, are not associated with the nerve compression disorders CTS and UNE in a general population.
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Affiliation(s)
- Elin Bergsten
- Department of Orthopedics, Helsingborg Hospital, Helsingborg, Sweden
- Department of Translational Medicine—Hand Surgery, Lund University, Lund, Sweden
| | - Mattias Rydberg
- Department of Translational Medicine—Hand Surgery, Lund University, Lund, Sweden
- Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
| | - Lars B. Dahlin
- Department of Translational Medicine—Hand Surgery, Lund University, Lund, Sweden
- Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Malin Zimmerman
- Department of Orthopedics, Helsingborg Hospital, Helsingborg, Sweden
- Department of Translational Medicine—Hand Surgery, Lund University, Lund, Sweden
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Stenberg L, Hazer Rosberg DB, Kohyama S, Suganuma S, Dahlin LB. Injury-Induced HSP27 Expression in Peripheral Nervous Tissue Is Not Associated with Any Alteration in Axonal Outgrowth after Immediate or Delayed Nerve Repair. Int J Mol Sci 2021; 22:ijms22168624. [PMID: 34445330 PMCID: PMC8395341 DOI: 10.3390/ijms22168624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/03/2021] [Accepted: 08/06/2021] [Indexed: 11/29/2022] Open
Abstract
We investigated injury-induced heat shock protein 27 (HSP27) expression and its association to axonal outgrowth after injury and different nerve repair models in healthy Wistar and diabetic Goto-Kakizaki rats. By immunohistochemistry, expression of HSP27 in sciatic nerves and DRG and axonal outgrowth (neurofilaments) in sciatic nerves were analyzed after no, immediate, and delayed (7-day delay) nerve repairs (7- or 14-day follow-up). An increased HSP27 expression in nerves and in DRG at the uninjured side was associated with diabetes. HSP27 expression in nerves and in DRG increased substantially after the nerve injuries, being higher at the site where axons and Schwann cells interacted. Regression analysis indicated a positive influence of immediate nerve repair compared to an unrepaired injury, but a shortly delayed nerve repair had no impact on axonal outgrowth. Diabetes was associated with a decreased axonal outgrowth. The increased expression of HSP27 in sciatic nerve and DRG did not influence axonal outgrowth. Injured sciatic nerves should appropriately be repaired in healthy and diabetic rats, but a short delay does not influence axonal outgrowth. HSP27 expression in sciatic nerve or DRG, despite an increase after nerve injury with or without a repair, is not associated with any alteration in axonal outgrowth.
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Affiliation(s)
- Lena Stenberg
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden; (D.B.H.R.); (L.B.D.)
- Correspondence: ; Tel.: +46-730-49-73-76
| | - Derya Burcu Hazer Rosberg
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden; (D.B.H.R.); (L.B.D.)
- Department of Neurosurgery, Faculty of Medicine, Mugla Sıtkı Kocman University, Mugla 48100, Turkey
| | - Sho Kohyama
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan;
| | - Seigo Suganuma
- Department of Orthopaedic Surgery, Ishikawa Prefectural Central Hospital, Kanazawa 920-8530, Japan;
| | - Lars B. Dahlin
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden; (D.B.H.R.); (L.B.D.)
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, 581 83 Linköping, Sweden
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Hazer Rosberg DB, Hazer B, Stenberg L, Dahlin LB. Gold and Cobalt Oxide Nanoparticles Modified Poly-Propylene Poly-Ethylene Glycol Membranes in Poly (ε-Caprolactone) Conduits Enhance Nerve Regeneration in the Sciatic Nerve of Healthy Rats. Int J Mol Sci 2021; 22:7146. [PMID: 34281198 PMCID: PMC8268459 DOI: 10.3390/ijms22137146] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 12/15/2022] Open
Abstract
Reconstruction of nerve defects is a clinical challenge. Autologous nerve grafts as the gold standard treatment may result in an incomplete restoration of extremity function. Biosynthetic nerve conduits are studied widely, but still have limitations. Here, we reconstructed a 10 mm sciatic nerve defect in healthy rats and analyzed nerve regeneration in poly (ε-caprolactone) (PCL) conduits longitudinally divided by gold (Au) and gold-cobalt oxide (AuCoO) nanoparticles embedded in poly-propylene poly-ethylene glycol (PPEG) membranes (AuPPEG or AuCoOPPEG) and compared it with unmodified PPEG-membrane and hollow PCL conduits. After 21 days, we detected significantly better axonal outgrowth, together with higher numbers of activated Schwann cells (ATF3-labelled) and higher HSP27 expression, in reconstructed sciatic nerve and in corresponding dorsal root ganglia (DRG) in the AuPPEG and AuCoOPPEG groups; whereas the number of apoptotic Schwann cells (cleaved caspase 3-labelled) was significantly lower. Furthermore, numbers of activated and apoptotic Schwann cells in the regenerative matrix correlated with axonal outgrowth, whereas HSP27 expression in the regenerative matrix and in DRGs did not show any correlation with axonal outgrowth. We conclude that gold and cobalt-oxide nanoparticle modified membranes in conduits improve axonal outgrowth and increase the regenerative performance of conduits after nerve reconstruction.
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Affiliation(s)
- Derya Burcu Hazer Rosberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Neurosurgery, Mugla Sitki Kocman University, Mugla 48100, Turkey
| | - Baki Hazer
- Department of Aircraft Airflame Engine Maintenance, Kapadokya University, Ürgüp 50420, Turkey;
- Department of Chemistry, Zonguldak Bülent Ecevit University, Zonguldak 67100, Turkey
| | - Lena Stenberg
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
| | - Lars B. Dahlin
- Department of Hand Surgery, Skåne University Hospital, 205 02 Malmö, Sweden; (L.S.); (L.B.D.)
- Department of Translational Medicine—Hand Surgery, Lund University, 205 02 Malmö, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, 581 83 Linköping, Sweden
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Ülger M, Sezer G, Özyazgan İ, Özocak H, Yay A, Balcıoğlu E, Yalçın B, Göç R, Ülger B, Özyazgan TM, Yakan B. The effect of erythropoietin and umbilical cord-derived mesenchymal stem cells on nerve regeneration in rats with sciatic nerve injury. J Chem Neuroanat 2021; 114:101958. [PMID: 33864937 DOI: 10.1016/j.jchemneu.2021.101958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/05/2021] [Accepted: 04/06/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVE We aimed to investigate the effects of umbilical cord-derived mesenchymal stem cells and erythropoietin on nerve regeneration in the sciatic nerve 'crush injury' in a rat model. METHODS Experimental animals were randomly divided into 5 groups: Crush Injury, Sham, Crush Injury + Erythropoietin, Crush Injury + Mesenchymal Stem Cell, Crush Injury + Erythropoietin + Mesenchymal Stem Cell groups. Crush injury made with bulldog clamp. Mesencyhmal stem cells delivered by enjection locally. Erythropoietin administered by intraperitoneally. On the 0th, 14th and 28th days, all groups underwent a sciatic functional index test. On 28th day, sciatic nerves were harvested and histopathological appearance, axon number and axon diameter of the sciatic nerves were evaluated with Oil Red O staining. Immunoreactivity of nerve growth factor, neurofilament-H and caspase-3 were determined by immunofluorescence staining in nerve tissue. RESULTS In histopathological examination, axons and nerve bundles exhibiting normal nerve architecture in the Sham group. Crush Injury + Mesenchymal Stem Cell group has similar histological appearance to the Sham group. The number of axons were higher in the Mesenchymal Stem Cell groups compared to the Crush Injury group. Nerve growth factor immunoreactivity intensity was significantly lower in Crush Injury + Mesenchymal Stem Cell group compared to Crush Injury group. Neurofilament-H density was higher in the treatment groups when compared to the Crush Injury group. CONCLUSIONS In this study, it was found that umbilical cord-derived mesenchymal stem cells and erythropoietin treatments effects positively regeneration of crush injury caused by bulldog clamp in the sciatic nerve of rats.
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Affiliation(s)
- Menekşe Ülger
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Gülay Sezer
- Department of Pharmacology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - İrfan Özyazgan
- Department of Plastic Reconstructive and Aesthetic Surgery, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Hakan Özocak
- Department of Plastic Reconstructive and Aesthetic Surgery, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Arzu Yay
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Esra Balcıoğlu
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Betül Yalçın
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Rümeysa Göç
- Department of Histology and Embryology, Cumhuriyet University, Faculty of Medicine, 058140, Sivas, Turkey.
| | - Birkan Ülger
- Department of Anesthesiology and Reanimation, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Tuğçe Merve Özyazgan
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
| | - Birkan Yakan
- Department of Histology and Embryology, Erciyes University, Faculty of Medicine, 38039, Kayseri, Turkey.
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Qu WR, Zhu Z, Liu J, Song DB, Tian H, Chen BP, Li R, Deng LX. Interaction between Schwann cells and other cells during repair of peripheral nerve injury. Neural Regen Res 2021; 16:93-98. [PMID: 32788452 PMCID: PMC7818858 DOI: 10.4103/1673-5374.286956] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Peripheral nerve injury (PNI) is common and, unlike damage to the central nervous system injured nerves can effectively regenerate depending on the location and severity of injury. Peripheral myelinating glia, Schwann cells (SCs), interact with various cells in and around the injury site and are important for debris elimination, repair, and nerve regeneration. Following PNI, Wallerian degeneration of the distal stump is rapidly initiated by degeneration of damaged axons followed by morphologic changes in SCs and the recruitment of circulating macrophages. Interaction with fibroblasts from the injured nerve microenvironment also plays a role in nerve repair. The replication and migration of injury-induced dedifferentiated SCs are also important in repairing the nerve. In particular, SC migration stimulates axonal regeneration and subsequent myelination of regenerated nerve fibers. This mobility increases SC interactions with other cells in the nerve and the exogenous environment, which influence SC behavior post-injury. Following PNI, SCs directly and indirectly interact with other SCs, fibroblasts, and macrophages. In addition, the inter- and intracellular mechanisms that underlie morphological and functional changes in SCs following PNI still require further research to explain known phenomena and less understood cell-specific roles in the repair of the injured peripheral nerve. This review provides a basic assessment of SC function post-PNI, as well as a more comprehensive evaluation of the literature concerning the SC interactions with macrophages and fibroblasts that can influence SC behavior and, ultimately, repair of the injured nerve.
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Affiliation(s)
- Wen-Rui Qu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Zhe Zhu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Jun Liu
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - De-Biao Song
- Department of Emergency and Critical Medicine, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Heng Tian
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Bing-Peng Chen
- Orthopedic Medical Center, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Rui Li
- Department of Hand Surgery, the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Ling-Xiao Deng
- Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
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Maggiore JC, Burrell JC, Browne KD, Katiyar KS, Laimo FA, Ali ZS, Kaplan HM, Rosen JM, Cullen DK. Tissue engineered axon-based "living scaffolds" promote survival of spinal cord motor neurons following peripheral nerve repair. J Tissue Eng Regen Med 2020; 14:1892-1907. [PMID: 33049797 DOI: 10.1002/term.3145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 09/11/2020] [Accepted: 10/02/2020] [Indexed: 12/19/2022]
Abstract
Peripheral nerve injury (PNI) impacts millions annually, often leaving debilitated patients with minimal repair options to improve functional recovery. Our group has previously developed tissue engineered nerve grafts (TENGs) featuring long, aligned axonal tracts from dorsal root ganglia (DRG) neurons that are fabricated in custom bioreactors using the process of axon "stretch-growth." We have shown that TENGs effectively serve as "living scaffolds" to promote regeneration across segmental nerve defects by exploiting the newfound mechanism of axon-facilitated axon regeneration, or "AFAR," by simultaneously providing haptic and neurotrophic support. To extend this work, the current study investigated the efficacy of living versus nonliving regenerative scaffolds in preserving host sensory and motor neuronal health following nerve repair. Rats were assigned across five groups: naïve, or repair using autograft, nerve guidance tube (NGT) with collagen, NGT + non-aligned DRG populations in collagen, or TENGs. We found that TENG repairs yielded equivalent regenerative capacity as autograft repairs based on preserved health of host spinal cord motor neurons and acute axonal regeneration, whereas NGT repairs or DRG neurons within an NGT exhibited reduced motor neuron preservation and diminished regenerative capacity. These acute regenerative benefits ultimately resulted in enhanced levels of functional recovery in animals receiving TENGs, at levels matching those attained by autografts. Our findings indicate that TENGs may preserve host spinal cord motor neuron health and regenerative capacity without sacrificing an otherwise uninjured nerve (as in the case of the autograft) and therefore represent a promising alternative strategy for neurosurgical repair following PNI.
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Affiliation(s)
- Joseph C Maggiore
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.,Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA
| | - Justin C Burrell
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.,Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA
| | - Kevin D Browne
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA
| | - Kritika S Katiyar
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA.,Axonova Medical LLC, Philadelphia, PA, USA
| | - Franco A Laimo
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA
| | - Zarina S Ali
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Hilton M Kaplan
- New Jersey Center for Biomaterials, Rutgers University, New Brunswick, NJ, USA
| | - Joseph M Rosen
- Dartmouth-Hitchcock Medical Center, Division of Plastic Surgery, Dartmouth College, Lebanon, NH, USA
| | - D Kacy Cullen
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, USA.,Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, USA.,Center for Neurotrauma, Neurodegeneration & Restoration, CMC VA Medical Center, Philadelphia, PA, USA.,Axonova Medical LLC, Philadelphia, PA, USA
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9
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Ultramicronized Palmitoylethanolamide and Paracetamol, a New Association to Relieve Hyperalgesia and Pain in a Sciatic Nerve Injury Model in Rat. Int J Mol Sci 2020; 21:ijms21103509. [PMID: 32429243 PMCID: PMC7278943 DOI: 10.3390/ijms21103509] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 12/20/2022] Open
Abstract
Inflammation is known to be an essential trigger of the pathological changes that have a critical impact on nerve repair and regeneration; moreover, damage to peripheral nerves can cause a loss of sensory function and produces persistent neuropathic pain. To date, various potential approaches for neuropathic pain have focused on controlling neuroinflammation. The aim of this study was to investigate the neuroprotective effects of a new association of ultramicronized Palmitoylethanolamide (PEAum), an Autacoid Local Injury Antagonist Amide (ALIAmide) with analgesic and anti-inflammatory properties, with Paracetamol, a common analgesic, in a rat model of sciatic nerve injury (SNI). The association of PEAum-Paracetamol, in a low dose (5 mg/kg + 30 mg/kg), was given by oral gavage daily for 14 days after SNI. PEAum-Paracetamol association was able to reduce hyperalgesia, mast cell activation, c-Fos and nerve growth factor (NGF) expression, neural histological damage, cytokine release, and apoptosis. Furthermore, the analgesic action of PEAum-Paracetamol could act in a synergistic manner through the inhibition of the NF-κB pathway, which leads to a decrease of cyclooxygenase 2-dependent prostaglandin E2 (COX-2/PGE2) release. In conclusion, we demonstrated that PEAum associated with Paracetamol was able to relieve pain and neuroinflammation after SNI in a synergistic manner, and this therapeutic approach could be relevant to decrease the demand of analgesic drugs.
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10
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Gugliandolo E, D'amico R, Cordaro M, Fusco R, Siracusa R, Crupi R, Impellizzeri D, Cuzzocrea S, Di Paola R. Effect of PEA-OXA on neuropathic pain and functional recovery after sciatic nerve crush. J Neuroinflammation 2018; 15:264. [PMID: 30217164 PMCID: PMC6137737 DOI: 10.1186/s12974-018-1303-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/03/2018] [Indexed: 12/20/2022] Open
Abstract
Background Animal models of sciatic nerve injury are commonly used to study neuropathic pain as well as axon regeneration. Inflammation/immune response at the site of nerve lesion is known to be an essential trigger of the pathological changes that have a critical impact on nerve repair and regeneration; moreover, the damage to peripheral nerve can cause a loss of sensory function and produces a persistent neuropathic pain. N-Acylethanolamines (NAEs) involve a family of lipid molecules existent in animal and plant, of which is N-palmitoylethanolamide (PEA) that arouses great attention owing to its anti-inflammatory, analgesic, and neuroprotective activities. The modulation of specific amidases for NAEs (and in particular NAE-hydrolyzing acid amidase NAAA, which is more selective for PEA) could be a condition to preserve its levels. Here, we investigated, in a mice model of sciatic nerve crush, the effect of 2-pentadecyl-2-oxazoline (PEA-OXA) the oxazoline of PEA that reportedly modulates activity of NAAA. Methods In this experimental model, the mice, following the sciatic nerve crush, were treated daily with PEA-OXA at a dose of 10 mg\kg for 14 days. Therefore, we evaluated the effects of PEA-OXA on the degree of injury, on the inhibition of neuropathic pain, and on the inflammatory process, as in the improvement of reparative processes and therefore in the restoration of locomotor function. Results Our results showed that PEA-OXA (10 mg/kg) treatment, daily, for 14 days after sciatic nerve crush, have an anti-inflammatory and neuroprotective effect and moreover have an analgesic protective effect on hypersensitivity, and improve the functional recovery after nerve crush. Conclusions Therefore, treatment with PEA-OXA as a whole has shown a protective effect, which makes it a powerful candidate for the treatment of peripheral nerve injury and neuropathic pain.
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Affiliation(s)
- Enrico Gugliandolo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Ramona D'amico
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Marika Cordaro
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Roberta Fusco
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Rosalia Crupi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Daniela Impellizzeri
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy. .,Department of Pharmacological and Physiological Science, Saint Louis University, St. Louis, MO, USA.
| | - Rosanna Di Paola
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres, no 31, 98166, Messina, Italy
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11
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Gey M, Wanner R, Schilling C, Pedro MT, Sinske D, Knöll B. Atf3 mutant mice show reduced axon regeneration and impaired regeneration-associated gene induction after peripheral nerve injury. Open Biol 2017; 6:rsob.160091. [PMID: 27581653 PMCID: PMC5008009 DOI: 10.1098/rsob.160091] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 08/01/2016] [Indexed: 12/27/2022] Open
Abstract
Axon injury in the peripheral nervous system (PNS) induces a regeneration-associated gene (RAG) response. Atf3 (activating transcription factor 3) is such a RAG and ATF3's transcriptional activity might induce ‘effector’ RAGs (e.g. small proline rich protein 1a (Sprr1a), Galanin (Gal), growth-associated protein 43 (Gap43)) facilitating peripheral axon regeneration. We provide a first analysis of Atf3 mouse mutants in peripheral nerve regeneration. In Atf3 mutant mice, facial nerve regeneration and neurite outgrowth of adult ATF3-deficient primary dorsal root ganglia neurons was decreased. Using genome-wide transcriptomics, we identified a neuropeptide-encoding RAG cluster (vasoactive intestinal peptide (Vip), Ngf, Grp, Gal, Pacap) regulated by ATF3. Exogenous administration of neuropeptides enhanced neurite growth of Atf3 mutant mice suggesting that these molecules might be effector RAGs of ATF3's pro-regenerative function. In addition to the induction of growth-promoting molecules, we present data that ATF3 suppresses growth-inhibiting molecules such as chemokine (C-C motif) ligand 2. In summary, we show a pro-regenerative ATF3 function during PNS nerve regeneration involving transcriptional activation of a neuropeptide-encoding RAG cluster. ATF3 is a general injury-inducible factor, therefore ATF3-mediated mechanisms identified herein might apply to other cell and injury types.
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Affiliation(s)
- Manuel Gey
- Institute of Physiological Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Renate Wanner
- Institute of Physiological Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Corinna Schilling
- Institute of Physiological Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Maria T Pedro
- Department of Neurosurgery, Bezirkskrankenhaus Günzburg, Ulm University, 89081 Ulm, Germany
| | - Daniela Sinske
- Institute of Physiological Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Bernd Knöll
- Institute of Physiological Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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12
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Stenberg L, Stößel M, Ronchi G, Geuna S, Yin Y, Mommert S, Mårtensson L, Metzen J, Grothe C, Dahlin LB, Haastert-Talini K. Regeneration of long-distance peripheral nerve defects after delayed reconstruction in healthy and diabetic rats is supported by immunomodulatory chitosan nerve guides. BMC Neurosci 2017; 18:53. [PMID: 28720074 PMCID: PMC5516317 DOI: 10.1186/s12868-017-0374-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 07/10/2017] [Indexed: 12/31/2022] Open
Abstract
Background Delayed reconstruction of transection or laceration injuries of peripheral nerves is inflicted by a reduced regeneration capacity. Diabetic conditions, more frequently encountered in clinical practice, are known to further impair regeneration in peripheral nerves. Chitosan nerve guides (CNGs) have recently been introduced as a new generation of medical devices for immediate peripheral nerve reconstruction. Here, CNGs were used for 45 days delayed reconstruction of critical length 15 mm rat sciatic nerve defects in either healthy Wistar rats or diabetic Goto-Kakizaki rats; the latter resembling type 2 diabetes. In short and long-term investigations, we comprehensively analyzed the performance of one-chambered hollow CNGs (hCNGs) and two-chambered CNGs (CFeCNGs) in which a chitosan film has been longitudinally introduced. Additionally, we investigated in vitro the immunomodulatory effect provided by the chitosan film. Results Both types of nerve guides, i.e. hCNGs and CFeCNGs, enabled moderate morphological and functional nerve regeneration after reconstruction that was delayed for 45 days. These positive findings were detectable in generally healthy as well as in diabetic Goto-Kakizaki rats (for the latter only in short-term studies). The regenerative outcome did not reach the degree as recently demonstrated after immediate reconstruction using hCNGs and CFeCNGs. CFeCNG-treatment, however, enabled tissue regrowth in all animals (hCNGs: only in 80% of animals). CFeCNGs did further support with an increased vascularization of the regenerated tissue and an enhanced regrowth of motor axons. One mechanism by which the CFeCNGs potentially support successful regeneration is an immunomodulatory effect induced by the chitosan film itself. Our in vitro results suggest that the pro-regenerative effect of chitosan is related to the differentiation of chitosan-adherent monocytes into pro-healing M2 macrophages. Conclusions No considerable differences appear for the delayed nerve regeneration process related to healthy and diabetic conditions. Currently available chitosan nerve grafts do not support delayed nerve regeneration to the same extent as they do after immediate nerve reconstruction. The immunomodulatory characteristics of the biomaterial may, however, be crucial for their regeneration supportive effects. Electronic supplementary material The online version of this article (doi:10.1186/s12868-017-0374-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lena Stenberg
- Department of Translational Medicine - Hand Surgery, Lund University, 20502, Malmö, Sweden
| | - Maria Stößel
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, 30625, Hannover, Germany.,Center for Systems Neuroscience (ZSN), 30559, Hannover, Germany
| | - Giulia Ronchi
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute, University of Turin, 10043, Orbassano, Turin, Italy
| | - Stefano Geuna
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute, University of Turin, 10043, Orbassano, Turin, Italy
| | - Yaobin Yin
- Department of Translational Medicine - Hand Surgery, Lund University, 20502, Malmö, Sweden
| | - Susanne Mommert
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, 30625, Hannover, Germany
| | - Lisa Mårtensson
- Department of Translational Medicine - Hand Surgery, Lund University, 20502, Malmö, Sweden
| | - Jennifer Metzen
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, 30625, Hannover, Germany
| | - Claudia Grothe
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, 30625, Hannover, Germany.,Center for Systems Neuroscience (ZSN), 30559, Hannover, Germany
| | - Lars B Dahlin
- Department of Translational Medicine - Hand Surgery, Lund University, 20502, Malmö, Sweden.,Department of Hand Surgery, Skåne University Hospital, 20502, Malmö, Sweden
| | - Kirsten Haastert-Talini
- Institute of Neuroanatomy and Cell Biology, Hannover Medical School, 30625, Hannover, Germany. .,Center for Systems Neuroscience (ZSN), 30559, Hannover, Germany.
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13
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Thomsen NOB, Andersson GS, Björk J, Dahlin LB. Neurophysiological recovery 5 years after carpal tunnel release in patients with diabetes. Muscle Nerve 2017; 56:E59-E64. [PMID: 28241376 DOI: 10.1002/mus.25633] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 02/18/2017] [Accepted: 02/22/2017] [Indexed: 11/05/2022]
Abstract
INTRODUCTION The long-term results of neurophysiological recovery after carpal tunnel release in patients with diabetes have not been studied. METHODS Thirty-five patients with diabetes and carpal tunnel syndrome (CTS) were matched with 31 patients without diabetes who had idiopathic CTS, and 27 and 30 patients, respectively, participated in this follow-up study. Nerve conduction results at 5 years were compared with previously published results at baseline and 1 year. RESULTS Significant neurophysiological improvement continued from 1 to 5 years after carpal tunnel release for patients with and without diabetes. However, wrist-palm sensory conduction velocity was still abnormal for 85% and 43% of patients with and without diabetes, respectively. Although diabetes had an impact on 4 of 10 measured neurophysiological parameters, the influence of peripheral neuropathy seemed insignificant. DISCUSSION After carpal tunnel release, significant long-term neurophysiological improvement is possible for patients with diabetes, and it is not influenced by the presence of peripheral neuropathy. Muscle Nerve 56: E59-E64, 2017.
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Affiliation(s)
- Niels O B Thomsen
- Department of Hand Surgery, Skåne University Hospital, SE-205 02, Malmö, Sweden.,Department of Translational Medicine, Hand Surgery, Lund University, Malmö, Sweden
| | - Gert S Andersson
- Department of Clinical Neurophysiology, Skåne University Hospital, Lund, Sweden.,Department of Clinical Sciences Lund, Clinical Neurophysiology, Lund University, Lund, Sweden
| | - Jonas Björk
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Lars B Dahlin
- Department of Hand Surgery, Skåne University Hospital, SE-205 02, Malmö, Sweden.,Department of Translational Medicine, Hand Surgery, Lund University, Malmö, Sweden
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14
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G-CSF prevents caspase 3 activation in Schwann cells after sciatic nerve transection, but does not improve nerve regeneration. Neuroscience 2016; 334:55-63. [PMID: 27497708 DOI: 10.1016/j.neuroscience.2016.07.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/11/2016] [Accepted: 07/28/2016] [Indexed: 10/21/2022]
Abstract
Exogenous granulocyte-colony stimulating factor (G-CSF) has emerged as a drug candidate for improving the outcome after peripheral nerve injuries. We raised the question if exogenous G-CSF can improve nerve regeneration following a clinically relevant model - nerve transection and repair - in healthy and diabetic rats. In short-term experiments, distance of axonal regeneration and extent of injury-induced Schwann cell death was quantified by staining for neurofilaments and cleaved caspase 3, respectively, seven days after repair. There was no difference in axonal outgrowth between G-CSF-treated and non-treated rats, regardless if healthy Wistar or diabetic Goto-Kakizaki (GK) rats were examined. However, G-CSF treatment caused a significant 13% decrease of cleaved caspase 3-positive Schwann cells at the lesion site in healthy rats, but only a trend in diabetic rats. In the distal nerve segments of healthy rats a similar trend was observed. In long-term experiments of healthy rats, regeneration outcome was evaluated at 90days after repair by presence of neurofilaments, wet weight of gastrocnemius muscle, and perception of touch (von Frey monofilament testing weekly). The presence of neurofilaments distal to the suture line was similar in G-CSF-treated and non-treated rats. The weight ratio of ipsi-over contralateral gastrocnemius muscles, and perception of touch at any time point, were likewise not affected by G-CSF treatment. In addition, the inflammatory response in short- and long-term experiments was studied by analyzing ED1 stainable macrophages in healthy rats, but in neither case was any attenuation seen at the injury site or distal to it. G-CSF can prevent caspase 3 activation in Schwann cells in the short-term, but does not detectably affect the inflammatory response, nor improve early or late axonal outgrowth or functional recovery.
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15
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Stenberg L, Kodama A, Lindwall-Blom C, Dahlin LB. Nerve regeneration in chitosan conduits and in autologous nerve grafts in healthy and in type 2 diabetic Goto-Kakizaki rats. Eur J Neurosci 2015; 43:463-73. [PMID: 26355640 DOI: 10.1111/ejn.13068] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 09/06/2015] [Indexed: 12/26/2022]
Abstract
Knowledge about nerve regeneration after nerve injury and reconstruction in appropriate diabetic animal models is incomplete. Short-term nerve regeneration after reconstruction of a 10-mm sciatic nerve defect with either a hollow chitosan conduit or an autologous nerve graft was investigated in healthy Wistar and diabetic Goto-Kakizaki (GK) rats. After 21 days, axonal outgrowth, the presence of activated and apoptotic Schwann cells and the thickness of the formed matrix in the conduits were measured. In general, nerve regeneration was superior in autologous nerve grafts. In chitosan conduits, a matrix, which was thicker in diabetic rats, was formed and was positively correlated with length of axonal outgrowth. Axonal outgrowth in conduits and in nerve grafts extended further in diabetic rats than in healthy rats. There was a higher percentage of activating transcription factor 3 (ATF3)-immunostained cells in nerve segments from healthy rats than in diabetic rats after autologous nerve graft reconstruction. In chitosan conduits, more cleaved caspase 3-stained Schwann cells were generally observed in the matrix from the diabetic rats than in healthy rats. However, there were fewer apoptotic cells in the distal segment in diabetic rats reconstructed with a chitosan conduit. Preoperative glucose levels were positively correlated with axonal outgrowth after both reconstruction methods. Axonal regeneration was better in autologous nerve grafts than in hollow chitosan conduits and was enhanced in diabetic GK rats compared to healthy rats after reconstruction. This study provides insights into the nerve regeneration process in a clinically relevant diabetic animal model.
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Affiliation(s)
- Lena Stenberg
- Department of Translational Medicine - Hand Surgery, Lund University, Jan Waldenströms gata 5, 205 02, Malmö, Sweden.,Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
| | - Akira Kodama
- Department of Orthopaedic Surgery, Integrated Health Sciences, Institute of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | | | - Lars B Dahlin
- Department of Translational Medicine - Hand Surgery, Lund University, Jan Waldenströms gata 5, 205 02, Malmö, Sweden.,Department of Hand Surgery, Skåne University Hospital, Malmö, Sweden
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16
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Meyer C, Stenberg L, Gonzalez-Perez F, Wrobel S, Ronchi G, Udina E, Suganuma S, Geuna S, Navarro X, Dahlin LB, Grothe C, Haastert-Talini K. Chitosan-film enhanced chitosan nerve guides for long-distance regeneration of peripheral nerves. Biomaterials 2015; 76:33-51. [PMID: 26517563 DOI: 10.1016/j.biomaterials.2015.10.040] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/13/2015] [Accepted: 10/18/2015] [Indexed: 01/15/2023]
Abstract
Biosynthetic nerve grafts are developed in order to complement or replace autologous nerve grafts for peripheral nerve reconstruction. Artificial nerve guides currently approved for clinical use are not widely applied in reconstructive surgery as they still have limitations especially when it comes to critical distance repair. Here we report a comprehensive analysis of fine-tuned chitosan nerve guides (CNGs) enhanced by introduction of a longitudinal chitosan film to reconstruct critical length 15 mm sciatic nerve defects in adult healthy Wistar or diabetic Goto-Kakizaki rats. Short and long term investigations demonstrated that the CNGs enhanced by the guiding structure of the introduced chitosan film significantly improved functional and morphological results of nerve regeneration in comparison to simple hollow CNGs. Importantly, this was detectable both in healthy and in diabetic rats (short term) and the regeneration outcome almost reached the outcome after autologous nerve grafting (long term). Hollow CNGs provide properties likely leading to a wider clinical acceptance than other artificial nerve guides and their performance can be increased by simple introduction of a chitosan film with the same advantageous properties. Therefore, the chitosan film enhanced CNGs represent a new generation medical device for peripheral nerve reconstruction.
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Affiliation(s)
- Cora Meyer
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany and Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Lena Stenberg
- Department of Translational Medicine - Hand Surgery, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Francisco Gonzalez-Perez
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - Sandra Wrobel
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany and Center for Systems Neuroscience (ZSN), Hannover, Germany
| | - Giulia Ronchi
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute, University of Turin, Turin, Italy
| | - Esther Udina
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - Seigo Suganuma
- Department of Orthopaedic Surgery, Kanazawa University Hospital, Kanazawa, Japan
| | - Stefano Geuna
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute, University of Turin, Turin, Italy
| | - Xavier Navarro
- Department of Cell Biology, Physiology, and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona and CIBERNED, Bellaterra, Spain
| | - Lars B Dahlin
- Department of Translational Medicine - Hand Surgery, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Claudia Grothe
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany and Center for Systems Neuroscience (ZSN), Hannover, Germany.
| | - Kirsten Haastert-Talini
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany and Center for Systems Neuroscience (ZSN), Hannover, Germany
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17
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Yu L, Wu X, Wei J, Liao Q, Xu L, Luo S, Zeng X, Zhao Y, Lv Z, Wu Z. Preliminary expression profile of cytokines in brain tissue of BALB/c mice with Angiostrongylus cantonensis infection. Parasit Vectors 2015; 8:328. [PMID: 26070790 PMCID: PMC4476182 DOI: 10.1186/s13071-015-0939-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 06/05/2015] [Indexed: 12/05/2022] Open
Abstract
Background Angiostrongylus cantonensis (A. cantonensis) infection can result in increased risk of eosinophilic meningitis. Accumulation of eosinophils and inflammation can result in the A. cantonensis infection playing an important role in brain tissue injury during this pathological process. However, underlying mechanisms regarding the transcriptomic responses during brain tissue injury caused by A. cantonensis infection are yet to be elucidated. This study is aimed at identifying some genomic and transcriptomic factors influencing the accumulation of eosinophils and inflammation in the mouse brain infected with A. cantonensis. Methods An infected mouse model was prepared based on our laboratory experimental process, and then the mouse brain RNA Libraries were constructed for deep Sequencing with Illumina Genome Analyzer. The raw data was processed with a bioinformatics’ pipeline including Refseq genes expression analysis using cufflinks, annotation and classification of RNAs, lncRNA prediction as well as analysis of co-expression network. The analysis of Refseq data provides the measure of the presence and prevalence of transcripts from known and previously unknown genes. Results This study showed that Cys-Cys (CC) type chemokines such as CCL2, CCL8, CCL1, CCL24, CCL11, CCL7, CCL12 and CCL5 were elevated significantly at the late phase of infection. The up-regulation of CCL2 indicated that the worm of A. cantonensis had migrated into the mouse brain at an early infection phase. CCL2 could be induced in the brain injury during migration and CCL2 might play a major role in the neuropathic pain caused by A. cantonensis infection. The up-regulated expression of IL-4, IL-5, IL-10, and IL-13 showed Th2 cell predominance in immunopathological reactions at late infection phase in response to infection by A. cantonensis. These different cytokines can modulate and inhibit each other and function as a network with the specific potential to drive brain eosinophilic inflammation. The increase of ATF-3 expression at 21 dpi suggested the injury of neuronal cells at late phase of infection. 1217 new potential lncRNA were candidates of interest for further research. Conclusions These cytokine networks play an important role in the development of central nervous system inflammation caused by A. cantonensis infection. Electronic supplementary material The online version of this article (doi:10.1186/s13071-015-0939-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Liping Yu
- Department of Preventive Medicine, School of Medicine, Three Gorges University, Yichang, China. .,Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
| | - Xiaoying Wu
- Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Jie Wei
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Qi Liao
- Department of Preventive Medicine, School of Medicine, Ningbo University, Ningbo, China.
| | - Lian Xu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Siqi Luo
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Xin Zeng
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Yi Zhao
- Advanced Computing Research Laboratory, Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China.
| | - Zhiyue Lv
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
| | - Zhongdao Wu
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China. .,Key Laboratory for Tropical Diseases Control, The Ministry of Education, Sun Yat-sen University, Guangzhou, China.
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18
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Stenberg L, Dahlin LB. Gender differences in nerve regeneration after sciatic nerve injury and repair in healthy and in type 2 diabetic Goto-Kakizaki rats. BMC Neurosci 2014; 15:107. [PMID: 25216784 PMCID: PMC4169809 DOI: 10.1186/1471-2202-15-107] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 09/09/2014] [Indexed: 11/10/2022] Open
Abstract
Background In view of the global increase in diabetes, and the fact that recent findings indicate that diabetic neuropathy is more frequently seen in males, it is crucial to evaluate any gender differences in nerve regeneration in diabetes. Our aim was to evaluate in short-term experiments gender dissimilarities in axonal outgrowth in healthy and in genetically developed type 2 diabetic Goto-Kakizaki (GK) rats, and also to investigate the connection between activated (i.e. ATF-3, Activating Transcription Factor 3) and apoptotic (cleaved caspase 3) Schwann cells after sciatic nerve injury and repair. Female and male diabetic GK rats, spontaneously developing type 2 diabetes, were compared with corresponding healthy Wistar rats. The sciatic nerve was transected and instantly repaired. After six days the nerve was harvested to measure axonal outgrowth (i.e. neurofilament staining), and to quantify the number of ATF-3 (i.e. activated) and cleaved caspase 3 (i.e. apoptotic) stained Schwann cells using immunohistochemistry. Results Axonal outgrowth was generally longer in male than in female rats and also longer in healthy than in diabetic rats. Differences were observed in the number of activated Schwann cells both in the distal nerve segment and close to the lesion site. In particular the female diabetic rats had a lower number. There were no gender differences in number of cleaved caspase 3 stained Schwann cells, but rats with diabetes exhibited more (such cleaved caspase 3 stained Schwann) cells both at the lesion site and in the distal part of the sciatic nerve. Axonal outgrowth correlated with the number of ATF3 stained Schwann cells, but not with blood glucose levels or the cleaved caspase 3 stained Schwann cells. However, the number of cleaved caspase 3 stained Schwann cells correlated with the blood glucose level. Conclusions We conclude that there are gender differences in nerve regeneration in healthy rats and in type 2 diabetic GK rats.
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Affiliation(s)
- Lena Stenberg
- Department of Clinical Sciences - Hand Surgery, Lund University, Skane University Hospital, Malmö, Sweden.
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19
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Wang D, Fan Y, Zhang J. Transplantation of Nogo-66 receptor gene-silenced cells in a poly(D,L-lactic-co-glycolic acid) scaffold for the treatment of spinal cord injury. Neural Regen Res 2014; 8:677-85. [PMID: 25206713 PMCID: PMC4146076 DOI: 10.3969/j.issn.1673-5374.2013.08.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Accepted: 01/07/2013] [Indexed: 01/22/2023] Open
Abstract
Inhibition of neurite growth, which is in large part mediated by the Nogo-66 receptor, affects neural regeneration following bone marrow mesenchymal stem cell transplantation. The tissue engineering scaffold poly(D,L-lactide-co-glycolic acid) has good histocompatibility and can promote the growth of regenerating nerve fibers. The present study used small interfering RNA to silence Nogo-66 receptor gene expression in bone marrow mesenchymal stem cells and Schwann cells, which were subsequently transplanted with poly(D,L-lactide-co-glycolic acid) into the spinal cord lesion regions in rats. Simultaneously, rats treated with scaffold only were taken as the control group. Hematoxylin-eosin staining and immunohistochemistry revealed that at 4 weeks after transplantation, rats had good motor function of the hind limb after treatment with Nogo-66 receptor gene-silenced cells plus the poly(D,L-lactide-co-glycolic acid) scaffold compared with rats treated with scaffold only, and the number of bone marrow mesenchymal stem cells and neuron-like cells was also increased. At 8 weeks after transplantation, horseradish peroxidase tracing and transmission electron microscopy showed a large number of unmyelinated and myelinated nerve fibers, as well as intact regenerating axonal myelin sheath following spinal cord hemisection injury. These experimental findings indicate that transplantation of Nogo-66 receptor gene-silenced bone marrow mesenchymal stem cells and Schwann cells plus a poly(D,L-lactide-co-glycolic acid) scaffold can significantly enhance axonal regeneration of spinal cord neurons and improve motor function of the extremities in rats following spinal cord injury.
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Affiliation(s)
- Dong Wang
- Department of Neurosurgery, Tianjin Fourth Central Hospital, Tianjin 300140, China
| | - Yuhong Fan
- Department of Stomatology, First Clinical College, Hebei North University, Zhangjiakou 075000, Hebei Province, China
| | - Jianjun Zhang
- Department of Neurosurgery, Tianjin Fourth Central Hospital, Tianjin 300140, China
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20
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Chitosan tubes of varying degrees of acetylation for bridging peripheral nerve defects. Biomaterials 2013; 34:9886-904. [DOI: 10.1016/j.biomaterials.2013.08.074] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 08/27/2013] [Indexed: 11/19/2022]
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Traditional chinese medicine tang-luo-ning ameliorates sciatic nerve injuries in streptozotocin-induced diabetic rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:989670. [PMID: 24288572 PMCID: PMC3830865 DOI: 10.1155/2013/989670] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 09/01/2013] [Indexed: 12/27/2022]
Abstract
Diabetic peripheral neuropathy (DPN) is a common microvascular complication of diabetes associated with high disability rate and low quality of life. Tang-Luo-Ning (TLN) is an effective traditional Chinese medicine for the treatment of DPN. To illustrate the underlying neural protection mechanisms of TLN, the effect of TLN on electrophysiology and sciatic nerve morphology was investigated in a model of streptozotocin-induced DPN, as well as the underlying mechanism. Sciatic motor nerve conduction velocity and digital sensory nerve conduction velocity were reduced in DPN and were significantly improved by TLN or α-lipoic acid at 10 and 20 weeks after streptozotocin injection. It was demonstrated that TLN intervention for 20 weeks significantly alleviated pathological injury as well as increased the phosphorylation of ErbB2, Erk, Bad (Ser112), and the mRNA expression of neuregulin 1 (Nrg1), GRB2-associated binding protein 1 (Gab1), and mammalian target of rapamycin (Mtor) in injured sciatic nerve. These novel therapeutic properties of TLN to promote Schwann cell survival may offer a promising alternative medicine for the patients to delay the progression of DPN. The underlying mechanism may be that TLN exerts neural protection effect after sciatic nerve injury through Nrg1/ErbB2→Erk/Bad Schwann cell survival signaling pathway.
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Kato N, Matsumoto M, Kogawa M, Atkins GJ, Findlay DM, Fujikawa T, Oda H, Ogata M. Critical role of p38 MAPK for regeneration of the sciatic nerve following crush injury in vivo. J Neuroinflammation 2013. [PMID: 23282009 DOI: 10.1186/1742–2094-10-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The physiological function of p38α, which is an isoform of p38 MAPK, has been investigated previously in several studies using pharmacological inhibitors. However, the results regarding whether p38α promotes or inhibits nerve regeneration in vivo have been controversial. METHODS We generated novel p38α mutant mice (sem mice) with a point mutation in the region encoding the p38α substrate-docking-site, which serves as a limited loss-of-function model of p38α. In the present study, we utilized sem mice and wild-type littermates (wt mice) to investigate the physiological role of p38α in nerve regeneration following crush injuries. RESULTS At four weeks after crush injury, the average axon diameter and the average axon area in sem mice were significantly smaller than those in wt mice. The average myelin sheath thickness in sem mice was reduced compared to wt mice, but no significant difference was observed in the G-ratio between the two groups. The sciatic functional index value demonstrated that functional nerve recovery in sem mice following crush injury was delayed, which is consistent with the histological findings. To investigate the underlying mechanisms of these findings, we examined inflammatory responses of the sciatic nerve by immunohistochemistry and western blotting. At an early phase following crush injury, sem mice showed remarkably lower expression of inflammatory cytokines, such as TNF-α and IL-1β, than wt mice. The expression of Caspase-3 and Tenascin-C were also lower in sem mice. Conversely, at a late phase of the response, sem mice showed considerably higher expression of TNF-α and of IL-1β with lower expression of S-100 than wt mice. CONCLUSIONS This is the first study of the physiological role of p38 MAPK in nerve regeneration that does not rely on the use of pharmacological inhibitors. Our results indicate that p38α insufficiency may cause an inflammatory disorder, resulting in a delay of histological and functional nerve recovery following crush injury. We conclude that p38 MAPK has an important physiological role in nerve regeneration and may be important for controlling both initiation of inflammation and recovery from nerve injury.
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Affiliation(s)
- Naoki Kato
- Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan.
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Kato N, Matsumoto M, Kogawa M, Atkins GJ, Findlay DM, Fujikawa T, Oda H, Ogata M. Critical role of p38 MAPK for regeneration of the sciatic nerve following crush injury in vivo. J Neuroinflammation 2013; 10:1. [PMID: 23282009 PMCID: PMC3541116 DOI: 10.1186/1742-2094-10-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Accepted: 12/10/2012] [Indexed: 01/29/2023] Open
Abstract
Background The physiological function of p38α, which is an isoform of p38 MAPK, has been investigated previously in several studies using pharmacological inhibitors. However, the results regarding whether p38α promotes or inhibits nerve regeneration in vivo have been controversial. Methods We generated novel p38α mutant mice (sem mice) with a point mutation in the region encoding the p38α substrate-docking-site, which serves as a limited loss-of-function model of p38α. In the present study, we utilized sem mice and wild-type littermates (wt mice) to investigate the physiological role of p38α in nerve regeneration following crush injuries. Results At four weeks after crush injury, the average axon diameter and the average axon area in sem mice were significantly smaller than those in wt mice. The average myelin sheath thickness in sem mice was reduced compared to wt mice, but no significant difference was observed in the G-ratio between the two groups. The sciatic functional index value demonstrated that functional nerve recovery in sem mice following crush injury was delayed, which is consistent with the histological findings. To investigate the underlying mechanisms of these findings, we examined inflammatory responses of the sciatic nerve by immunohistochemistry and western blotting. At an early phase following crush injury, sem mice showed remarkably lower expression of inflammatory cytokines, such as TNF-α and IL-1β, than wt mice. The expression of Caspase-3 and Tenascin-C were also lower in sem mice. Conversely, at a late phase of the response, sem mice showed considerably higher expression of TNF-α and of IL-1β with lower expression of S-100 than wt mice. Conclusions This is the first study of the physiological role of p38 MAPK in nerve regeneration that does not rely on the use of pharmacological inhibitors. Our results indicate that p38α insufficiency may cause an inflammatory disorder, resulting in a delay of histological and functional nerve recovery following crush injury. We conclude that p38 MAPK has an important physiological role in nerve regeneration and may be important for controlling both initiation of inflammation and recovery from nerve injury.
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Affiliation(s)
- Naoki Kato
- Department of Orthopaedic Surgery, Saitama Medical University, Saitama, Japan.
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