PMID- 8843599 OWN - NLM STAT- MEDLINE DCOM- 19961230 LR - 20220321 IS - 0166-2236 (Print) IS - 0166-2236 (Linking) VI - 19 IP - 8 DP - 1996 Aug TI - Microglia: a sensor for pathological events in the CNS. PG - 312-8 AB - The most characteristic feature of microglial cells is their rapid activation in response to even minor pathological changes in the CNS. Microglia activation is a key factor in the defence of the neural parenchyma against infectious diseases, inflammation, trauma, ischaemia, brain tumours and neurodegeneration. Microglia activation occurs as a graded response in vivo. The transformation of microglia into potentially cytotoxic cells is under strict control and occurs mainly in response to neuronal or terminal degeneration, or both. Activated microglia are mainly scavenger cells but also perform various other functions in tissue repair and neural regeneration. They form a network of immune alert resident macrophages with a capacity for immune surveillance and control. Activated microglia can destroy invading micro-organisms, remove potentially deleterious debris, promote tissue repair by secreting growth factors and thus facilitate the return to tissue homeostasis. An understanding of intercellular signalling pathways for microglia proliferation and activation could form a rational basis for targeted intervention on glial reactions to injuries in the CNS. FAU - Kreutzberg, G W AU - Kreutzberg GW AD - Dept of Neuromorphology, Max-Planck-Institute of Psychiatry, Martinsried near Munich, Germany. LA - eng PT - Journal Article PT - Review PL - England TA - Trends Neurosci JT - Trends in neurosciences JID - 7808616 SB - IM MH - Animals MH - Central Nervous System/*injuries/pathology MH - Central Nervous System Diseases/*pathology MH - Humans MH - Microglia/*physiology RF - 75 EDAT- 1996/08/01 00:00 MHDA- 1996/08/01 00:01 CRDT- 1996/08/01 00:00 PHST- 1996/08/01 00:00 [pubmed] PHST- 1996/08/01 00:01 [medline] PHST- 1996/08/01 00:00 [entrez] AID - 0166-2236(96)10049-7 [pii] AID - 10.1016/0166-2236(96)10049-7 [doi] PST - ppublish SO - Trends Neurosci. 1996 Aug;19(8):312-8. doi: 10.1016/0166-2236(96)10049-7.