Carrageenan-induced subacromial bursitis caused changes in the rat's rotator cuff
2001 (English)In: Journal of Orthopaedic Research, ISSN 0736-0266, Vol. 19, no 3, 441-447 p.Article in journal (Refereed) Published
This study was designed to investigate the histologic expression of the rat's supra- and infraspinatus tendons in carrageenan-induced subacromial bursitis. Thirty-two rats received subacromial injections with carrageenan (n = 28) or saline (n = 4). The tendons were analysed microscopically after staining with hematoxyline eosin, Van Giesons hematoxyline and immunofluorescent staining of fibronectin and fibrinogen. In the controls (saline × 10) and group A (carrageenan × 5) there were no changes in the tendons. In group B (carrageenan × 10) 3/8 rats showed macrophages between the collagen fibres and an increased staining of fibronectin. In group C (double dosis carrageenan) all rats had signs of fibrocartilaginous metaplasia in the supraspinatus tendon. In eight of these specimens even bony metaplasia was seen. The infraspinatus tendon showed fibrosis but no fibro-cartilaginous metaplasia. The results showed that iatrogenic bursitis after carrageenan subacromial injections was associated with marked changes of the supraspinatus tendon.
Place, publisher, year, edition, pages
2001. Vol. 19, no 3, 441-447 p.
National CategoryMedical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-13705DOI: 10.1016/S0736-0266(00)90022-6OAI: oai:DiVA.org:liu-13705DiVA: diva2:21185