PMID- 18691639 OWN - NLM STAT- MEDLINE DCOM- 20090508 LR - 20231105 IS - 0306-4522 (Print) IS - 0306-4522 (Linking) VI - 158 IP - 3 DP - 2009 Feb 6 TI - Neuroprotection in stroke by complement inhibition and immunoglobulin therapy. PG - 1074-89 LID - 10.1016/j.neuroscience.2008.07.015 [doi] AB - Activation of the complement system occurs in a variety of neuroinflammatory diseases and neurodegenerative processes of the CNS. Studies in the last decade have demonstrated that essentially all of the activation components and receptors of the complement system are produced by astrocytes, microglia, and neurons. There is also rapidly growing evidence to indicate an active role of the complement system in cerebral ischemic injury. In addition to direct cell damage, regional cerebral ischemia and reperfusion (I/R) induces an inflammatory response involving complement activation and generation of active fragments, such as C3a and C5a anaphylatoxins, C3b, C4b, and iC3b. The use of specific inhibitors to block complement activation or their mediators such as C5a, can reduce local tissue injury after I/R. Consistent with therapeutic approaches that have been successful in models of autoimmune disorders, many of the same complement inhibition strategies are proving effective in animal models of cerebral I/R injury. One new form of therapy, which is less specific in its targeting of complement than monodrug administration, is the use of immunoglobulins. Intravenous immunoglobulin (IVIG) has the potential to inhibit multiple components of inflammation, including complement fragments, pro-inflammatory cytokine production and leukocyte cell adhesion. Thus, IVIG may directly protect neurons, reduce activation of intrinsic inflammatory cells (microglia) and inhibit transendothelial infiltration of leukocytes into the brain parenchyma following an ischemic stroke. The striking neuroprotective actions of IVIG in animal models of ischemic stroke suggest a potential therapeutic potential that merits consideration for clinical trials in stroke patients. FAU - Arumugam, T V AU - Arumugam TV AD - Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, 1300 Coulter Drive, Amarillo, TX 79106, USA. thiruma.arumugam@ttuhsc.edu FAU - Woodruff, T M AU - Woodruff TM FAU - Lathia, J D AU - Lathia JD FAU - Selvaraj, P K AU - Selvaraj PK FAU - Mattson, M P AU - Mattson MP FAU - Taylor, S M AU - Taylor SM LA - eng GR - Z01 AG000314-07/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20080712 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Anaphylatoxins) RN - 0 (Complement Inactivating Agents) RN - 0 (Immunoglobulins, Intravenous) RN - 9007-36-7 (Complement System Proteins) SB - IM MH - Anaphylatoxins/antagonists & inhibitors/metabolism MH - Animals MH - Brain Infarction/*drug therapy/*immunology/physiopathology MH - Chemotaxis, Leukocyte/drug effects/immunology MH - Complement Inactivating Agents/*therapeutic use MH - Complement System Proteins/drug effects/metabolism MH - Cytoprotection/drug effects/*immunology MH - Encephalitis/drug therapy/immunology/physiopathology MH - Humans MH - Immunoglobulins, Intravenous/pharmacology/*therapeutic use MH - Microglia/drug effects/immunology MH - Stroke/*drug therapy/*immunology/physiopathology PMC - PMC2639633 MID - NIHMS68910 EDAT- 2008/08/12 09:00 MHDA- 2009/05/09 09:00 PMCR- 2009/08/06 CRDT- 2008/08/12 09:00 PHST- 2008/05/13 00:00 [received] PHST- 2008/07/08 00:00 [revised] PHST- 2008/07/08 00:00 [accepted] PHST- 2008/08/12 09:00 [pubmed] PHST- 2009/05/09 09:00 [medline] PHST- 2008/08/12 09:00 [entrez] PHST- 2009/08/06 00:00 [pmc-release] AID - S0306-4522(08)01039-7 [pii] AID - 10.1016/j.neuroscience.2008.07.015 [doi] PST - ppublish SO - Neuroscience. 2009 Feb 6;158(3):1074-89. doi: 10.1016/j.neuroscience.2008.07.015. Epub 2008 Jul 12.