PMID- 27554772 OWN - NLM STAT- MEDLINE DCOM- 20170828 LR - 20181202 IS - 1420-9071 (Electronic) IS - 1420-682X (Linking) VI - 74 IP - 2 DP - 2017 Jan TI - Disruption of calcitonin gene-related peptide signaling accelerates muscle denervation and dampens cytotoxic neuroinflammation in SOD1 mutant mice. PG - 339-358 LID - 10.1007/s00018-016-2337-4 [doi] AB - Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disease. Neuronal vacuolization and glial activation are pathologic hallmarks in the superoxide dismutase 1 (SOD1) mouse model of ALS. Previously, we found the neuropeptide calcitonin gene-related peptide (CGRP) associated with vacuolization and astrogliosis in the spinal cord of these mice. We now show that CGRP abundance positively correlated with the severity of astrogliosis, but not vacuolization, in several motor and non-motor areas throughout the brain. SOD1 mice harboring a genetic depletion of the betaCGRP isoform showed reduced CGRP immunoreactivity associated with vacuolization, while motor functions, body weight, survival, and astrogliosis were not altered. When CGRP signaling was completely disrupted through genetic depletion of the CGRP receptor component, receptor activity-modifying protein 1 (RAMP1), hind limb muscle denervation, and loss of muscle performance were accelerated, while body weight and survival were not affected. Dampened neuroinflammation, i.e., reduced levels of astrogliosis in the brain stem already in the pre-symptomatic disease stage, and reduced microgliosis and lymphocyte infiltrations during the late disease phase were additional neuropathology features in these mice. On the molecular level, mRNA expression levels of brain-derived neurotrophic factor (BDNF) and those of the anti-inflammatory cytokine interleukin 6 (IL-6) were elevated, while those of several pro-inflammatory cytokines found reduced in the brain stem of RAMP1-deficient SOD1 mice at disease end stage. Our results thus identify an important, possibly dual role of CGRP in ALS pathogenesis. FAU - Ringer, Cornelia AU - Ringer C AD - Department of Molecular Neurosciences, Institute of Anatomy and Cell Biology, Philipps-University, Robert-Koch-Strasse 8, 35037, Marburg, Germany. AD - Institute of Anatomy, University of Lubeck, Lubeck, Germany. FAU - Tune, Sarah AU - Tune S AD - Department of Physiology, University of Lubeck, Lubeck, Germany. FAU - Bertoune, Mirjam A AU - Bertoune MA AD - Department of Medical Cell Biology, Institute of Anatomy and Cell Biology, Philipps-University, Marburg, Germany. FAU - Schwarzbach, Hans AU - Schwarzbach H AD - Department of Medical Cell Biology, Institute of Anatomy and Cell Biology, Philipps-University, Marburg, Germany. FAU - Tsujikawa, Kazutake AU - Tsujikawa K AD - Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka, Suita, Osaka, Japan. FAU - Weihe, Eberhard AU - Weihe E AD - Department of Molecular Neurosciences, Institute of Anatomy and Cell Biology, Philipps-University, Robert-Koch-Strasse 8, 35037, Marburg, Germany. weihe@staff.uni-marburg.de. FAU - Schutz, Burkhard AU - Schutz B AD - Department of Molecular Neurosciences, Institute of Anatomy and Cell Biology, Philipps-University, Robert-Koch-Strasse 8, 35037, Marburg, Germany. schuetzb@staff.uni-marburg.de. LA - eng PT - Journal Article DEP - 20160823 PL - Switzerland TA - Cell Mol Life Sci JT - Cellular and molecular life sciences : CMLS JID - 9705402 RN - 0 (Chemokines) RN - 0 (Nerve Growth Factors) RN - 0 (Ramp1 protein, mouse) RN - 0 (Receptor Activity-Modifying Protein 1) RN - EC 1.15.1.1 (Superoxide Dismutase-1) RN - JHB2QIZ69Z (Calcitonin Gene-Related Peptide) SB - IM MH - Animals MH - Astrocytes/metabolism/pathology MH - Brain/metabolism/*pathology MH - Calcitonin Gene-Related Peptide/*metabolism MH - Cell Death MH - Chemokines/metabolism MH - Disease Progression MH - Gene Expression Regulation MH - Humans MH - Hybridization, Genetic MH - Inflammation/*metabolism/*pathology MH - Lymphocytes/pathology MH - Mice, Mutant Strains MH - Mice, Transgenic MH - Models, Biological MH - Motor Neurons/metabolism/pathology MH - *Muscle Denervation MH - Nerve Growth Factors/metabolism MH - Receptor Activity-Modifying Protein 1/deficiency/metabolism MH - *Signal Transduction MH - Superoxide Dismutase-1/*genetics/metabolism MH - Vacuoles/metabolism OTO - NOTNLM OT - Astrocyte OT - Chemokine OT - Microglia OT - Neuropeptide OT - Receptor activity-modifying protein 1 OT - Superoxide dismutase 1 EDAT- 2016/08/25 06:00 MHDA- 2017/08/29 06:00 CRDT- 2016/08/25 06:00 PHST- 2016/01/28 00:00 [received] PHST- 2016/08/08 00:00 [accepted] PHST- 2016/08/06 00:00 [revised] PHST- 2016/08/25 06:00 [pubmed] PHST- 2017/08/29 06:00 [medline] PHST- 2016/08/25 06:00 [entrez] AID - 10.1007/s00018-016-2337-4 [pii] AID - 10.1007/s00018-016-2337-4 [doi] PST - ppublish SO - Cell Mol Life Sci. 2017 Jan;74(2):339-358. doi: 10.1007/s00018-016-2337-4. Epub 2016 Aug 23.