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. 2013 Aug 23;15(4):R98. doi: 10.1186/ar4278

Table 7.

Real-time PCR analysis of 14 selected genes using a different set of donors reveals similar correlation with RNA-Seq results

Gene name Differential expression Age P value

Young Old
DKK1 Higher in old 0.0004 ± 0.0006 0.008 ± 0.0006 0.04
COL10 Higher in old 7.66 × 10-5 ± 3.05 × 10-5 0.000148 ± 7.13 × 10-5 0.1
RUNX2 Lower in old 0.002 ± 0.0004 0.0005 ± 0.0004 0.02
SRPX Lower in old 0.0025 ± 0.0002 0.001 ± 0.002 0.05
ACSL5 Lower in old 0.004 ± 0.002 0.002 ± 0.02 0.13
IL7R Lower in old 0.001 ± 0.0002 0.0007 ± 0.0004 0.07
COL2A1 Lower in old 32.6 ± 24.5 0.2 ± 0.13 0.04
COL1A1 Lower in old 0.71 ± 0.11 0.02 ± 0.02 0.0003
MMP1 Lower in old 0.28 ± 0.17 0.07 ± 0.03 0.03
MMP13 Lower in old 0.08 ± 0.12 0.02 ± 0.02 0.28
ADAMTS-4 Lower in old 0.07 ± 0.05 0.03 ± 0.02 0.07
IL1β Lower in old 0.0001 ± 0.0002 2.66 × 10-5 ± 1.14 × 10-5 0.03
TNFα No change 0.0001 ± 7.7 × 10-5 9.8 × 10-5 ± 4.5 × 10-5 0.4
TBFβ No change 0.58 ± 0.14 1.06 ± 0.5 0.12

Values for real-time polymerase chain reaction (RT-PCR) are the mean ± standard deviation of relative expression levels normalised to expression of glyceraldehyde-3-phosphate dehydrogenase. Statistical significance was tested using Student's t test. DKK1, dickkopf homolog 1; COL10, collagen type X; RUNX2, Runt-related transcription factor 2; SRPX, Sushi repeat-containing protein; ACSL5, acyl-CoA synthetase long-chain family member 5; IL7R, interleukin 7 receptor; COL2A1, collagen type II, alpha 1; COL1A1, collagen type I, alpha 1; MMP1, matrix metalloproteinase 1; MMP-13, matrix metalloproteinase 13; ADAMTS4, a disintegrin and metalloproteinase with thrombospondin motifs 4; IL-1β, interleukin 1 beta; TNFα, tumour necrosis factor alpha; TGFβ, transforming growth factor beta.