期刊
CELLS
卷 11, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/cells11040663
关键词
subacromial bursa; bursitis; progenitor cells; inflammation; pain; augmentation
类别
资金
- German Research Foundation [KL 2983/3-1]
The subacromial bursa, previously considered as friction-reducing tissue, is now recognized for its stem cell potential and ability to enhance the regeneration of adjacent tissues. This review explores the role of bursal inflammation as a pain generator and a potential initiator of healing. Therapeutic targets to overcome bursal inflammation and pain are discussed, and further research is needed to fully understand the interplay between the subacromial bursa and rotator cuff tendons.
The subacromial bursa has long been demolded as friction-reducing tissue, which is often linked to shoulder pain and, therefore, partially removed during shoulder surgery. Currently, the discovery of the stem cell potential of resident bursa-derived cells shed a new light on the subacromial bursa. In the meanwhile, this neglected tissue is gaining more attention as to how it can augment the regenerative properties of adjacent tissues such as rotator cuff tendons. Specifically, the tight fibrovascular network, a high growth factor content, and the large progenitor potential of bursa-derived cells could complement the deficits that a nearby rotator cuff injury might experience due to the fact of its low endogenous regeneration potential. This review deals with the question of whether bursal inflammation is only a pain generator or could also be an initiator of healing. Furthermore, several experimental models highlight potential therapeutic targets to overcome bursal inflammation and, thus, pain. More evidence is needed to fully elucidate a direct interplay between subacromial bursa and rotator cuff tendons. Increasing attention to tendon repair will help to guide future research and answer open questions such that novel treatment strategies could harvest the subacromial bursa's potential to support healing of nearby rotator cuff injuries.
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