Table 6.
Principal component analysis of nonexpanded chondrocytes
| Mediator | Cluster | ||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| OSM | 0.954 | ||||
| IL-10 | 0.932 | ||||
| IL-1β | 0.889 | ||||
| MCP1 | 0.859 | ||||
| IL-1α | 0.804 | ||||
| IL-1RA | 0.700 | ||||
| Leptin | 0.880 | ||||
| HGF | 0.857 | ||||
| IL-13 | 0.817 | ||||
| IL-4 | 0.772 | ||||
| IL-7 | 0.754 | ||||
| IFNγ | 0.661 | ||||
| IL-8 | −0.856 | ||||
| IL-6 | 0.808 | ||||
| RANTES | 0.682 | ||||
| bFGF | 0.764 | ||||
| Adiponectin | 0.750 | ||||
| TNFα | 0.667 | ||||
| VEGF | 0.741 | ||||
| LIF | 0.619 | ||||
| IL-6R | 0.588 | ||||
| Eigenvalues | 7.1 | 3.9 | 2.5 | 1.6 | 1.1 |
| Variance explained (%) | 34 | 19 | 12 | 8 | 5 |
| Cronbach’s alpha | 0.152 | 0.392 | −3.235 | 0.032 | 0.068 |
bFGF, basic fibroblast growth factor; HGF, hepatocyte growth factor; IFNγ, interferon gamma; IL, interleukin; LIF, leukaemia inhibitory factor; MCP1, monocyte chemotactic factor 1; OSM, oncostatin M; RANTES, regulated upon activation normal T cell expressed and presumably secreted; TNFα, tumour necrosis factor alpha; VEGF, vascular endothelial growth factor.