PMID- 16267827 OWN - NLM STAT- MEDLINE DCOM- 20060428 LR - 20161124 IS - 0360-4012 (Print) IS - 0360-4012 (Linking) VI - 82 IP - 5 DP - 2005 Dec 1 TI - Differential role of tumor necrosis factor receptors in mouse brain inflammatory responses in cryolesion brain injury. PG - 701-16 AB - Tumor necrosis factor-alpha (TNF-alpha) is one of the mediators dramatically increased after traumatic brain injury that leads to the activation, proliferation, and hypertrophy of mononuclear, phagocytic cells and gliosis. Eventually, TNF-alpha can induce both apoptosis and necrosis via intracellular signaling. This cytokine exerts its functions via interaction with two receptors: type-1 receptor (TNFR1) and type-2 receptor (TNFR2). In this work, the inflammatory response after a freeze injury (cryolesion) in the cortex was studied in wild-type (WT) animals and in mice lacking TNFR1 (TNFR1 KO) or TNFR2 (TNFR2 KO). Lack of TNFR1, but not of TNFR2, significantly decreased the inflammatory response and tissue damage elicited by the cryolesion at both 3 and 7 days postlesion, with decreased gliosis, lower IL-1beta immunostaining, and a reduction of apoptosis markers. Cryolesion produced a clear induction of the proinflammatory cytokines interleukin (IL)-1alpha, IL-1beta, IL-6, and TNF-alpha; this induction was significantly lower in the TNFR1 KO mice. Host response genes (ICAM-1, A20, EB22/5, and GFAP) were also induced by the cryolesion, but to a lesser extent in TNFR1 KO mice. Lack of TNFR1 signaling also affected the expression of apoptosis/cell death-related genes (Fas, Rip, p53), matrix metalloproteinases (MMP3, MMP9, MMP12), and their inhibitors (TIMP1), suggesting a role of TNFR1 in extracellular matrix remodeling after injury. However, GDNF, NGF, and BDNF expression were not affected by TNFR1 deficiency. Overall, these results suggest that TNFR1 is involved in the early establishment of the inflammatory response and that its deficiency causes a decreased inflammatory response and tissue damage following brain injury. FAU - Quintana, Albert AU - Quintana A AD - Institute of Neurosciences and Department of Cellular Biology, Physiology and Immunology, Animal Physiology Unit, Faculty of Sciences, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain. FAU - Giralt, Mercedes AU - Giralt M FAU - Rojas, Santiago AU - Rojas S FAU - Penkowa, Milena AU - Penkowa M FAU - Campbell, Iain L AU - Campbell IL FAU - Hidalgo, Juan AU - Hidalgo J FAU - Molinero, Amalia AU - Molinero A LA - eng GR - MH62231/MH/NIMH NIH HHS/United States GR - NS36979/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci Res JT - Journal of neuroscience research JID - 7600111 RN - 0 (Cytokines) RN - 0 (Growth Substances) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Receptors, Tumor Necrosis Factor, Type I) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) RN - 0 (Tumor Necrosis Factor Decoy Receptors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 1IEO802L3J (recombinant human tumor necrosis factor-binding protein-1) SB - IM MH - Animals MH - Apoptosis/*physiology MH - Brain/*metabolism/physiopathology MH - Brain Injuries/genetics/*metabolism/physiopathology MH - Cold Temperature/adverse effects MH - Cytokines/metabolism MH - Denervation MH - Disease Models, Animal MH - Down-Regulation/physiology MH - Encephalitis/genetics/*metabolism/physiopathology MH - Female MH - Gene Expression Regulation/genetics MH - Genes, Immediate-Early/physiology MH - Gliosis/genetics/metabolism/physiopathology MH - Growth Substances/genetics MH - Mice MH - Mice, Knockout MH - Nerve Degeneration/genetics/*metabolism/physiopathology MH - Receptors, Tumor Necrosis Factor/*genetics MH - Receptors, Tumor Necrosis Factor, Type I MH - Receptors, Tumor Necrosis Factor, Type II/genetics MH - Tumor Necrosis Factor Decoy Receptors MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2005/11/04 09:00 MHDA- 2006/04/29 09:00 CRDT- 2005/11/04 09:00 PHST- 2005/11/04 09:00 [pubmed] PHST- 2006/04/29 09:00 [medline] PHST- 2005/11/04 09:00 [entrez] AID - 10.1002/jnr.20680 [doi] PST - ppublish SO - J Neurosci Res. 2005 Dec 1;82(5):701-16. doi: 10.1002/jnr.20680.