- Gelatinase activity of matrix metalloproteinases in the cerebrospinal fluid of various patient populations. Valenzuela, M.A., Cartier, L., Collados, L., Kettlun, A.M., Araya, F., Concha, C., Flores, L., Wolf, M.E., Mosnaim, A.D. Res. Commun. Mol. Pathol. Pharmacol. (1999)