PMID- 12062469 OWN - NLM STAT- MEDLINE DCOM- 20020807 LR - 20190614 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 935 IP - 1-2 DP - 2002 May 10 TI - Alterations in hippocampal GAP-43, BDNF, and L1 following sustained cerebral ischemia. PG - 24-31 AB - Alterations in factors involved in the regeneration of the neuronal network in the hippocampus of rats with microsphere embolism (ME) were examined. Nine hundred microspheres (48 microm in diameter) were injected into the right hemisphere, and immunochemical and immunohistochemical studies on the hippocampus were performed on the seventh day thereafter. Hematoxylin-eosin staining showed progressive and severe degeneration of the hippocampus after ME. The protein levels of brain-derived neurotrophic factor (BDNF), 43-kDa growth-associated protein (GAP-43), and adhesion protein L1 (L1) in the ipsilateral hippocampus of the ME animal, determined by Western blot analysis or enzyme immunoassay, were increased, unaltered, and decreased, respectively. In contrast, the immunohistochemical study showed increases in a marker of axonal sprouting GAP-43, and a neurotrophic factor BDNF, and a decrease in an adhesion molecule L1 in some areas of the hippocampal ischemic penumbra of such animals. These results suggest that some factors for regeneration of the neuronal network in the ischemic penumbra responded to sustained cerebral ischemia for a certain period, although functional network of the nerve cells in the microsphere-injected hemisphere would be unlikely established after ME. FAU - Miyake, Keiko AU - Miyake K AD - Department of Pharmacology, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, 192-0392 Hachioji, Japan. FAU - Yamamoto, Wataru AU - Yamamoto W FAU - Tadokoro, Mina AU - Tadokoro M FAU - Takagi, Norio AU - Takagi N FAU - Sasakawa, Kyoko AU - Sasakawa K FAU - Nitta, Atsumi AU - Nitta A FAU - Furukawa, Shoei AU - Furukawa S FAU - Takeo, Satoshi AU - Takeo S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (GAP-43 Protein) RN - 0 (Leukocyte L1 Antigen Complex) RN - 0 (Membrane Glycoproteins) RN - 0 (Neural Cell Adhesion Molecules) SB - IM MH - Animals MH - Brain Ischemia/*metabolism/pathology/physiopathology MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Carotid Artery Thrombosis/metabolism/pathology/physiopathology MH - Cell Death/physiology MH - Cerebral Infarction/*metabolism/pathology/physiopathology MH - Cerebrovascular Circulation/physiology MH - Disease Models, Animal MH - Down-Regulation/physiology MH - GAP-43 Protein/*metabolism MH - Hippocampus/*metabolism/pathology/physiopathology MH - Immunohistochemistry MH - Leukocyte L1 Antigen Complex MH - Male MH - Membrane Glycoproteins/*metabolism MH - Microspheres MH - Nerve Degeneration/metabolism/pathology/physiopathology MH - Nerve Regeneration/*physiology MH - Neural Cell Adhesion Molecules/*metabolism MH - Rats MH - Rats, Wistar MH - Time Factors MH - Up-Regulation/physiology EDAT- 2002/06/14 10:00 MHDA- 2002/08/08 10:01 CRDT- 2002/06/14 10:00 PHST- 2002/06/14 10:00 [pubmed] PHST- 2002/08/08 10:01 [medline] PHST- 2002/06/14 10:00 [entrez] AID - S0006899302024204 [pii] AID - 10.1016/s0006-8993(02)02420-4 [doi] PST - ppublish SO - Brain Res. 2002 May 10;935(1-2):24-31. doi: 10.1016/s0006-8993(02)02420-4.