PMID- 26775747 OWN - NLM STAT- MEDLINE DCOM- 20170411 LR - 20181202 IS - 1532-6500 (Electronic) IS - 1058-2746 (Linking) VI - 25 IP - 6 DP - 2016 Jun TI - Association of synovial inflammation and inflammatory mediators with glenohumeral rotator cuff pathology. PG - 989-97 LID - S1058-2746(15)00582-0 [pii] LID - 10.1016/j.jse.2015.10.011 [doi] AB - HYPOTHESIS: We hypothesized that patients with full-thickness rotator cuff tears would have greater synovial inflammation compared with those without rotator cuff tear pathology, with gene expression relating to histologic findings. METHODS: Synovial sampling was performed in 19 patients with full-thickness rotator cuff tears (RTC group) and in 11 patients without rotator cuff pathology (control group). Cryosections were stained and examined under light microscopy and confocal fluorescent microscopy for anti-cluster CD45 (common leukocyte antigen), anti-CD31 (endothelial), and anti-CD68 (macrophage) cell surface markers. A grading system was used to quantitate synovitis under light microscopy, and digital image analysis was used to quantify the immunofluorescence staining area. Quantitative polymerase chain reaction was performed for validated inflammatory markers. Data were analyzed with analysis of covariance, Mann-Whitney U, and Spearman rank order testing, with significance set at alpha = .05. RESULTS: The synovitis score was significantly increased in the RTC group compared with controls. Immunofluorescence demonstrated significantly increased staining for CD31, CD45, and CD68 in the RTC vs control group. CD45+/68- cells were found perivascularly, with CD45+/68+ cells toward the joint lining edge of the synovium. Levels of matrix metalloproteinase-3 (MMP-3) and interleukin-6 were significantly increased in the RTC group, with a positive correlation between the synovitis score and MMP-3 expression. CONCLUSIONS: Patients with full-thickness rotator cuff tears have greater levels of synovial inflammation, angiogenesis, and MMP-3 upregulation compared with controls. Gene expression of MMP-3 correlates with the degree of synovitis. CI - Published by Elsevier Inc. FAU - Abrams, Geoffrey D AU - Abrams GD AD - Department of Orthopedic Surgery, Stanford University, Stanford, CA, USA; VA Palo Alto Healthcare System, Palo Alto, CA, USA. Electronic address: gabrams@stanford.edu. FAU - Luria, Ayala AU - Luria A AD - VA Palo Alto Healthcare System, Palo Alto, CA, USA. FAU - Carr, Rebecca A AU - Carr RA AD - VA Palo Alto Healthcare System, Palo Alto, CA, USA. FAU - Rhodes, Christopher AU - Rhodes C AD - VA Palo Alto Healthcare System, Palo Alto, CA, USA. FAU - Robinson, William H AU - Robinson WH AD - VA Palo Alto Healthcare System, Palo Alto, CA, USA; Division of Immunology/Rheumatology, Stanford University, Stanford, CA, USA. FAU - Sokolove, Jeremy AU - Sokolove J AD - VA Palo Alto Healthcare System, Palo Alto, CA, USA; Division of Immunology/Rheumatology, Stanford University, Stanford, CA, USA. LA - eng PT - Journal Article DEP - 20160114 PL - United States TA - J Shoulder Elbow Surg JT - Journal of shoulder and elbow surgery JID - 9206499 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (Biomarkers) RN - 0 (CD68 antigen, human) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) RN - 0 (Platelet Endothelial Cell Adhesion Molecule-1) RN - EC 3.1.3.48 (Leukocyte Common Antigens) RN - EC 3.4.24.17 (MMP3 protein, human) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Adult MH - Aged MH - Antigens, CD/analysis/genetics MH - Antigens, Differentiation, Myelomonocytic/analysis/genetics MH - Biomarkers/analysis MH - Case-Control Studies MH - Female MH - *Gene Expression MH - Humans MH - Inflammation Mediators/analysis MH - Interleukin-6/metabolism MH - Leukocyte Common Antigens/analysis/genetics MH - Male MH - Matrix Metalloproteinase 3/*genetics/metabolism MH - Middle Aged MH - Platelet Endothelial Cell Adhesion Molecule-1/analysis/genetics MH - Rotator Cuff Injuries/*complications MH - Severity of Illness Index MH - Synovial Membrane/chemistry/pathology MH - Synovitis/etiology/*genetics/*metabolism/pathology MH - Up-Regulation OTO - NOTNLM OT - MMP OT - Rotator cuff OT - cytokine OT - inflammation OT - synovitis OT - synovium EDAT- 2016/01/19 06:00 MHDA- 2017/04/12 06:00 CRDT- 2016/01/19 06:00 PHST- 2015/07/29 00:00 [received] PHST- 2015/10/06 00:00 [revised] PHST- 2015/10/18 00:00 [accepted] PHST- 2016/01/19 06:00 [entrez] PHST- 2016/01/19 06:00 [pubmed] PHST- 2017/04/12 06:00 [medline] AID - S1058-2746(15)00582-0 [pii] AID - 10.1016/j.jse.2015.10.011 [doi] PST - ppublish SO - J Shoulder Elbow Surg. 2016 Jun;25(6):989-97. doi: 10.1016/j.jse.2015.10.011. Epub 2016 Jan 14.