PMID- 10383120 OWN - NLM STAT- MEDLINE DCOM- 19990729 LR - 20091119 IS - 1059-910X (Print) IS - 1059-910X (Linking) VI - 45 IP - 4-5 DP - 1999 May 15-Jun 1 TI - Neurotrophin-mediated potentiation of neuronal injury. PG - 276-84 AB - The neurotrophins are a diverse family of peptides which activate specific tyrosine kinase-linked receptors. Over the past five decades, since the pioneering work of Levi-Montalcini and colleagues, the critical role that neurotrophins play in shaping the developing nervous system has become increasingly established. These molecules, which include the nerve growth factor (NGF)-related peptides, NGF, brain-derived neurotrophic factor (BDNF), NT-4/5 and NT-3, promote differentiation and survival in the developing nervous system, and to a lesser extent in the adult nervous system. As survival-promoting molecules, neurotrophins have been studied as potential neuroprotective agents, and have shown beneficial effects in many model systems. However, a surprising "dark side" to neurotrophin behavior has emerged from some of these studies implying that, under certain pathological conditions, neurotrophins may exacerbate, rather than alleviate, injury. How neurotrophins cause these deleterious consequences is a question which is only beginning to be answered, but initial work supports altered free radical handling or modification of glutamate receptor expression as possible mechanisms underlying these effects. This review will focus on evidence suggesting that neurotrophins may enhance injury under certain circumstances and on the mechanisms behind these injury-promoting aspects. FAU - Behrens, M M AU - Behrens MM AD - Center for the Study of the Nervous System Injury and Department of Neurology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. behrensm@neuro.wustl.edu FAU - Strasser, U AU - Strasser U FAU - Lobner, D AU - Lobner D FAU - Dugan, L L AU - Dugan LL LA - eng PT - Journal Article PT - Review PL - United States TA - Microsc Res Tech JT - Microscopy research and technique JID - 9203012 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Culture Media) RN - 0 (Nerve Growth Factors) RN - 0 (Receptor, Ciliary Neurotrophic Factor) RN - 0 (Receptors, Nerve Growth Factor) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Animals MH - Apoptosis/drug effects/physiology MH - Brain-Derived Neurotrophic Factor/pharmacology/physiology MH - Cell Hypoxia MH - Cells, Cultured MH - Culture Media/chemistry MH - Microscopy, Confocal MH - Mitochondria/metabolism MH - Necrosis MH - Nerve Growth Factors/pharmacology/*physiology MH - Neurons/drug effects/pathology/*physiology MH - Neutrophils/metabolism MH - Oxidative Stress/physiology MH - Receptor Protein-Tyrosine Kinases/metabolism MH - Receptor, Ciliary Neurotrophic Factor MH - Receptors, Nerve Growth Factor/metabolism MH - Time Factors RF - 162 EDAT- 1999/06/26 10:00 MHDA- 2000/06/22 10:00 CRDT- 1999/06/26 10:00 PHST- 1999/06/26 10:00 [pubmed] PHST- 2000/06/22 10:00 [medline] PHST- 1999/06/26 10:00 [entrez] AID - 10.1002/(SICI)1097-0029(19990515/01)45:4/5<276::AID-JEMT11>3.0.CO;2-4 [pii] AID - 10.1002/(SICI)1097-0029(19990515/01)45:4/5<276::AID-JEMT11>3.0.CO;2-4 [doi] PST - ppublish SO - Microsc Res Tech. 1999 May 15-Jun 1;45(4-5):276-84. doi: 10.1002/(SICI)1097-0029(19990515/01)45:4/5<276::AID-JEMT11>3.0.CO;2-4.