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Increased mast cell degranulation and co-localization of mast cells with the NMDA receptor-1 during healing after Achilles tendon rupture
Uppsala University, Sweden; Karolinska Institute, Sweden; Uppsala University, Sweden.
Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences.
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2017 (English)In: Cell and Tissue Research, ISSN 0302-766X, E-ISSN 1432-0878, Vol. 370, no 3, p. 451-460Article in journal (Refereed) Published
Abstract [en]

The role of inflammation and the mechanism of tendon healing after rupture has historically been a matter of controversy. The purpose of the present study is to investigate the role of mast cells and their relation to the NMDA receptor-1 (a glutamate receptor) during healing after Achilles tendon rupture. Eight female Sprague Dawley rats had their right Achilles tendon transected. Three weeks after rupture, histological quantification of mast cell numbers and their state of degranulation was assessed by histochemistry. Co-localization of mast cell tryptase (a mast cell marker) and NMDA receptor-1 was determined by immunofluorescence. The intact left Achilles tendon was used as control. An increased number of mast cells and a higher proportion of degranulated mast cells were found in the healing Achilles tendon compared to the intact. In addition, increased co-localization of mast cell tryptase and NMDA receptor-1 was seen in the areas of myotendinous junction, mid-tendon proper and bone tendon junction of the healing versus the intact tendon. These findings introduce a possible role for mast cells in the healing phase after Achilles tendon rupture.

Place, publisher, year, edition, pages
SPRINGER , 2017. Vol. 370, no 3, p. 451-460
Keywords [en]
Achilles tendon healing; NMDA; Mast cells; Tryptase; Rats
National Category
Cell and Molecular Biology
Identifiers
URN: urn:nbn:se:liu:diva-143611DOI: 10.1007/s00441-017-2684-yISI: 000416358400010PubMedID: 28975451OAI: oai:DiVA.org:liu-143611DiVA, id: diva2:1165632
Note

Funding Agencies|AFA Forsakring; Swedish Research Council

Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2018-04-19

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Eliasson, Pernilla

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