NDLI: Expression of xylosyltransferases I and II and their role in the pathogenesis of arthrofibrosis

Content Provider	Springer Nature : BioMed Central
Author	Bernstein, Anke Reichert, Sven N. A. Südkamp, Norbert P. Hernandez, Sergio Latorre Nerlich, Andreas G. Kühle, Jan Mayr, Hermann O.
Abstract	Background Arthrofibrosis is a painful and restraining complication that occurs after about 10% of total knee arthroplasty and cruciate ligament surgery. The pathogenesis of arthrofibrosis has not yet been fully understood. Stress signals stimulate immune cells, and fibroblast differentiates into myofibroblast, which produce a large amount of collagen. Xylosyltransferases also appear to be involved in these pathways. They catalyze proteoglycan biosynthesis, which is involved in tissue remodeling and myofibroblast differentiation. The aim of this study was to investigate the relationship between the disease arthrofibrosis and the expression of the two isoforms of xylosyltransferases I and II. Methods Tissue samples from 14 patients with arthrofibrosis were compared with tissue samples from seven healthy controls. The xylosyltransferases were detected by immunohistochemistry. The tissues were divided into four different areas of interest: vessels, synovialis, cell-poor and cell-rich fibrosis, or cell-poor and cell-rich areas in the control group. A quantification of the results was performed by modification of the immunoreactive score according to Remmele and Stegner. Results Xylosyltransferase I was expressed in the various tissue types at varying rates. Xylosyltransferase I expression was considerably and significantly stronger than that of xylosyltransferase II. The following sequences of xylosyltransferase I and xylosyltransferase II expression were determined as follows: vessels >> cell-rich fibrosis > cell-poor fibrosis > synovialis. A positive correlation between the number of positive fibroblasts and the immunoreactive scoring system (IRS) was documented. Conclusions The significant positive correlation of xylosyltransferase -I expression with increasing number of fibroblasts demonstrates a high myofibroblast differentiation rate, which implies a gradual event as the pathogenesis of arthrofibrosis.
Related Links	https://josr-online.biomedcentral.com/counter/pdf/10.1186/s13018-020-1544-8.pdf
Ending Page	11
Page Count	11
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s13018-020-1544-8
Journal	Journal of Orthopaedic Surgery and Research
Issue Number	1
Volume Number	15
Language	English
Publisher	BioMed Central
Publisher Date	2020-01-23
Access Restriction	Open
Subject Keyword	Orthopedics Surgical Orthopedics Xylosyltransferase Arthrofibrosis Pathogenesis Myofibroblast Immunohistology
Content Type	Text
Resource Type	Article
Subject	Surgery Orthopedics and Sports Medicine
Journal Impact Factor	2.8/2023
5-Year Journal Impact Factor	3/2023

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