PMID- 18243551 OWN - NLM STAT- MEDLINE DCOM- 20080618 LR - 20161124 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 434 IP - 2 DP - 2008 Mar 28 TI - Comparison of blood-nerve barrier disruption and matrix metalloprotease-9 expression in injured central and peripheral nerves in mice. PG - 155-9 LID - 10.1016/j.neulet.2007.12.052 [doi] AB - To investigate the involvement of blood-born factors and extracellular proteases in axonal degeneration and regeneration in both PNS and CNS, we directly compared the differences of blood-nerve barrier (BNB) disruption and matrix metalloprotease-9 (MMP-9) induction between the sciatic nerve and optic nerve after crush injury in the same animal. In sciatic nerve, BNB disruption, fibrin(ogen) deposition and MMP-9 expression were observed only in the first week following injury. Neurofilament (NF) immunoreactivity dramatically decreased in the first 2 days, gradually recovered to the normal levels by day 28. In contrast, the immunoglobulin G deposits spanned from 4 h to 28 days in crushed optic nerves. Fibrin(ogen) deposition was only observed in the first 2 days, while MMP-9 induction did not occur until a week after injury but lasted for 3 weeks in the crushed optic nerves. The NF immunoreactivity did not change much until day 7 and almost completely disappeared on day 28. The decrease of NF immunoreactivity coincided with the induction of MMP-9 after optic nerve crush. These results show that BNB disruption and MMP-9 induction are differentially regulated in the PNS and CNS after injuries, and they may contribute to the different regeneration capacities of the two systems. FAU - Liu, Li-Yun AU - Liu LY AD - Department of Anatomy, Histology and Embryology, Shanghai Medical School, Fudan University, 200032 Shanghai, China. FAU - Zheng, Hua AU - Zheng H FAU - Xiao, Hong-Lei AU - Xiao HL FAU - She, Zhen-Jue AU - She ZJ FAU - Zhao, Shu-Min AU - Zhao SM FAU - Chen, Zu-Lin AU - Chen ZL FAU - Zhou, Guo-Min AU - Zhou GM LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080103 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Immunoglobulin G) RN - 0 (Neurofilament Proteins) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EC 3.4.24.35 (Mmp9 protein, mouse) SB - IM MH - Animals MH - Blood-Brain Barrier/*enzymology/pathology MH - Extracellular Matrix/enzymology MH - Immunoglobulin G/metabolism MH - Male MH - Matrix Metalloproteinase 9/*metabolism MH - Mice MH - Mice, Inbred C57BL MH - Nerve Crush MH - Neurofilament Proteins/metabolism MH - Optic Nerve/*enzymology/pathology MH - Optic Nerve Injuries/*metabolism/pathology MH - Sciatic Nerve/*enzymology/*injuries/pathology EDAT- 2008/02/05 09:00 MHDA- 2008/06/19 09:00 CRDT- 2008/02/05 09:00 PHST- 2007/08/28 00:00 [received] PHST- 2007/11/06 00:00 [revised] PHST- 2007/12/19 00:00 [accepted] PHST- 2008/02/05 09:00 [pubmed] PHST- 2008/06/19 09:00 [medline] PHST- 2008/02/05 09:00 [entrez] AID - S0304-3940(07)01324-9 [pii] AID - 10.1016/j.neulet.2007.12.052 [doi] PST - ppublish SO - Neurosci Lett. 2008 Mar 28;434(2):155-9. doi: 10.1016/j.neulet.2007.12.052. Epub 2008 Jan 3.