Effects of leukocyte- and platelet-rich plasma on tendon disorders based on in vitro and in vivo studies (Review)

xlomafota13 shared this article with you from Inoreader Effects of leukocyte- and platelet-rich plasma on tendon disorders based on <em>in vitro</em> and <em>in vivo</em> studies (Review) Via Experimental and therapeutic medicine Exp Ther Med. 2021 Jun;21(6):639. doi: 10.3892/etm.2021.10071. Epub 2021 Apr 16. ABSTRACT Tendon-related disorders are common musculoskeletal system disorders in clinical practice, accounting for 30-50% of all sports-related injuries, and they are difficult to treat due to the hypovascular structure of the tendons. Platelet-rich plasma (PRP), including pure PRP and leukocyte- and platelet-rich plasma (L-PRP), has been attracting increasing attention, as it may stimulate tissue regeneration through the release of growth factors and cytokines. The aim of the present review was to provide a summary of the effects of L-PRP on tendon disorders and the underlying mechanisms through a comprehensive examination of the published literature, including in vitro, animal and clinical studies. It has been demonstrated that L-PRP results in comparatively greater pain relief and improved function in patients suffering from tendon disorders. Fur thermore, L-PRP may exert its effects through a diverse range of mechanisms, such as neovascularization, cell proliferation and differentiation of tendon/progenitor stem cells into tenocytes, as well as extracellular matrix reorganization by transforming type III to type I collagen fibers. It has also been indicated that the effects of leukocytes in L-PRP depend on the biological state of the injured tissue and its surrounding microenvironment. L-PRP is beneficial and promotes tendon healing at the early stage, whereas it is likely detrimental to the repair of tendon at a later stage because of the risk of excessive catabolic and inflammatory responses. Overall, the application of L-PRP in tendon disorders appears to be a promising field that is worthy of further research. PMID:33968170 | PMC:PMC8097231 | DOI:10.3892/etm.2021.10071 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.