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Table 4 Top 10 genes with the highest and lowest log 2 fold change when comparing young and old tendon

From: Transcriptome analysis of ageing in uninjured human Achilles tendon

Condition increased differential expression

Gene symbol

Gene name

Location

Function

Log 2 fold change

Old

CYP24A1

Cytochrome P450, family 24, subfamily A,1

Cytoplasm

Enzyme

9.3

FOLH1B

Folate hydrolase 1B

Cytoplasm

Enzyme

8.8

POU3F4

POU class 3 homeobox 4

Nucleus

Transcription regulator

8.3

FOLH1

Folate hydrolase 1

Plasma membrane

Peptidase

7.7

BRS3

Bombesin-like receptor 3

Plasma membrane

G-protein coupled receptor

7.6

XIST

X (inactive)-specific transcript (non-protein coding)

Variable

Long non-coding RNA

6.9

EGF

Epidermal growth factor

Extracellular space

Growth factor

6.5

BRINP3

Bone morphogenetic protein/retinoic acid inducible neural-specific 3

Secreted/mitochondria

Osteoblast differentiation factor

6.5

NXPH2

Neurexophilin 2

Extracellular space

Signalling molecules

6.5

MYF5

Myogenic factor 5

Nucleus

Transcription regulator

6.4

Young

CYP1A1

Cytochrome P450, family 1, subfamily A, polypeptide 1

Cytoplasm

Enzyme

−7.6

CLEC3A

C-type lectin domain family 3, member A

Secreted

Cell adhesion

−6.1

DIRAS1

DIRAS family, GTP-binding RAS-like 1

Plasma membrane

Enzyme

−5.9

SYT13

Synaptotagmin XIII

Plasma membrane

Transporter

−5.6

GPR143

G protein-coupled receptor 143

Plasma membrane

G-protein coupled receptor

−5.6

SLC7A14

Solute carrier family 7 member 14

Plasma membrane

Transporter

−5.4

HIST 1H3A

HISTONE 1H3A

Nucleus

Nucleosome

−5.4

PYCR1

Pyrroline-5-carboxylate reductase 1

Cytoplasm

Enzyme

−5.3

UTS2R

Urotensin 2 receptor

Plasma membrane

G-protein coupled receptor

−5.2

HBG1

Hemoglobin, gamma A

Cytoplasm

Fe carrier

−4.9

  1. Log2 fold change and q value (adjusted P value) were determined in edgeR. A logarithm to the base 2 of 9 is approximately a linear fold change of 3.2. Shown are the 10 genes with highest and lowest expression in old compared with young tendon samples.