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Wank, Isabel ; Niedermair, Tanja ; Kronenberg, Daniel ; Stange, Richard ; Brochhausen, Christoph ; Hess, Andreas ; Grässel, Susanne

Influence of the Peripheral Nervous System on Murine Osteoporotic Fracture Healing and Fracture-Induced Hyperalgesia

Wank, Isabel, Niedermair, Tanja, Kronenberg, Daniel, Stange, Richard, Brochhausen, Christoph , Hess, Andreas und Grässel, Susanne (2022) Influence of the Peripheral Nervous System on Murine Osteoporotic Fracture Healing and Fracture-Induced Hyperalgesia. International Journal of Molecular Sciences 24 (1), S. 510.

Veröffentlichungsdatum dieses Volltextes: 15 Feb 2023 12:23
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.53780


Zusammenfassung

Osteoporotic fractures are often linked to persisting chronic pain and poor healing outcomes. Substance P (SP), alpha-calcitonin gene-related peptide (alpha-CGRP) and sympathetic neurotransmitters are involved in bone remodeling after trauma and nociceptive processes, e.g., fracture-induced hyperalgesia. We aimed to link sensory and sympathetic signaling to fracture healing and fracture-induced ...

Osteoporotic fractures are often linked to persisting chronic pain and poor healing outcomes. Substance P (SP), alpha-calcitonin gene-related peptide (alpha-CGRP) and sympathetic neurotransmitters are involved in bone remodeling after trauma and nociceptive processes, e.g., fracture-induced hyperalgesia. We aimed to link sensory and sympathetic signaling to fracture healing and fracture-induced hyperalgesia under osteoporotic conditions. Externally stabilized femoral fractures were set 28 days after OVX in wild type (WT), alpha-CGRP- deficient (alpha-CGRP -/-), SP-deficient (Tac1-/-) and sympathectomized (SYX) mice. Functional MRI (fMRI) was performed two days before and five and 21 days post fracture, followed by mu CT and biomechanical tests. Sympathectomy affected structural bone properties in the fracture callus whereas loss of sensory neurotransmitters affected trabecular structures in contralateral, non-fractured bones. Biomechanical properties were mostly similar in all groups. Both nociceptive and resting-state (RS) fMRI revealed significant baseline differences in functional connectivity (FC) between WT and neurotransmitter-deficient mice. The fracture-induced hyperalgesia modulated central nociception and had robust impact on RS FC in all groups. The changes demonstrated in RS FC in fMRI might potentially be used as a bone traumata-induced biomarker regarding fracture healing under pathophysiological musculoskeletal conditions. The findings are of clinical importance and relevance as they advance our understanding of pain during osteoporotic fracture healing and provide a potential imaging biomarker for fracture-related hyperalgesia and its temporal development. Overall, this may help to reduce the development of chronic pain after fracture thereby improving the treatment of osteoporotic fractures.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftInternational Journal of Molecular Sciences
Verlag:MDPI
Ort der Veröffentlichung:BASEL
Band:24
Nummer des Zeitschriftenheftes oder des Kapitels:1
Seitenbereich:S. 510
Datum28 Dezember 2022
InstitutionenMedizin > Lehrstuhl für Orthopädie
Medizin > Lehrstuhl für Pathologie
Projekte
Gefördert von: Bundesministerium für Bildung und Forschung (BMBF) (01EC1403B)
Identifikationsnummer
WertTyp
10.3390/ijms24010510DOI
Stichwörter / KeywordsGENE-RELATED PEPTIDE; RESTING-STATE NETWORKS; CEREBRAL-BLOOD-FLOW; SUBSTANCE-P; FUNCTIONAL CONNECTIVITY; BONE LOSS; DESCENDING CONTROL; INBRED STRAINS; PAIN; MICE; osteoporosis; fracture healing; bone-brain nervous system interactions; fMRI sensory and sympathetic nervous system
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie
600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenZum Teil
URN der UB Regensburgurn:nbn:de:bvb:355-epub-537804
Dokumenten-ID53780

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