Degradome expression profiling in human articular cartilage

Table 2 Number of genes in each catalytic class showing differential expression between osteoarthritis and fracture groups

	P < 0.05	P < 0.01	P < 0.001	P < 0.0001
Aspartic proteases	1	3	3	1
Cysteine proteases	17	15	6	6
Metalloproteases	19	25	23	9
Serine proteases	19	11	6	10
Threonine proteases	3	2	0	0

Numbers of genes showing statistical significance between the two groups (osteoarthritis versus fracture to the neck of femur (NOF)) in each catalytic class. Pairwise statistical analysis between groups was performed using the Mann-Whitney U test.

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