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Table 1 Protease Inhibitors used in ex vivo collagen assay

From: N-α-PGP and PGP, potential biomarkers and therapeutic targets for COPD

Enzyme Inhibited

Chemical Composition( Source)

Efficacy

Ref.

PE

Z-prolyl prolinal (Calbiochem)

Ki = 500 pM

[36]

MMP-9

C27H33N3O5S (Calbiochem)

IC50 = 5 nM

[37]

MMP-1

(4-(4-(Methanesulfonamido)phenoxy)phenylsulfonyl) methyloxirane (Calbiochem)

Ki = 45 μM

[38]

HNE

N-(2-(4-(2,2-dimethylpropionyloxy)phenylsulfonylamino)benzoyl)

aminoacetic acid N-(o-(p-pivaloyloxybenzene)sulfonylamino benzoyl)glycine (Calbiochem)

IC50 = 50 nM

[39]