PMID- 30802499 OWN - NLM STAT- MEDLINE DCOM- 20200109 LR - 20200109 IS - 1095-953X (Electronic) IS - 0969-9961 (Linking) VI - 127 DP - 2019 Jul TI - Manipulation of microbiota reveals altered callosal myelination and white matter plasticity in a model of Huntington disease. PG - 65-75 LID - S0969-9961(18)30551-5 [pii] LID - 10.1016/j.nbd.2019.02.011 [doi] AB - Structural and molecular myelination deficits represent early pathological features of Huntington disease (HD). Recent evidence from germ-free (GF) animals suggests a role for microbiota-gut-brain bidirectional communication in the regulation of myelination. In this study, we aimed to investigate the impact of microbiota on myelin plasticity and oligodendroglial population dynamics in the mixed-sex BACHD mouse model of HD. Ultrastructural analysis of myelin in the corpus callosum revealed alterations of myelin thickness in BACHD GF compared to specific-pathogen free (SPF) mice, whereas no differences were observed between wild-type (WT) groups. In contrast, myelin compaction was altered in all groups when compared to WT SPF animals. Levels of myelin-related proteins were generally reduced, and the number of mature oligodendrocytes was decreased in the prefrontal cortex under GF compared to SPF conditions, regardless of genotype. Minor differences in commensal bacteria at the family and genera levels were found in the gut microbiota of BACHD and WT animals housed in standard living conditions. Our findings indicate complex effects of a germ-free status on myelin-related characteristics, and highlight the adaptive properties of myelination as a result of environmental manipulation. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Radulescu, Carola I AU - Radulescu CI AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore; Department of Psychology, The University of Sheffield, S1 2LT, UK. FAU - Garcia-Miralles, Marta AU - Garcia-Miralles M AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore. FAU - Sidik, Harwin AU - Sidik H AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore. FAU - Bardile, Costanza Ferrari AU - Bardile CF AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore. FAU - Yusof, Nur Amirah Binte Mohammad AU - Yusof NABM AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore. FAU - Lee, Hae Ung AU - Lee HU AD - Lee Kong Chian School of Medicine, Nanyang Technological University, 637551, Singapore. FAU - Ho, Eliza Xin Pei AU - Ho EXP AD - GIS Efficient Rapid Microbial Sequencing, Genome Institute of Singapore, A*STAR, 138672, Singapore. FAU - Chu, Collins Wenhan AU - Chu CW AD - GIS Efficient Rapid Microbial Sequencing, Genome Institute of Singapore, A*STAR, 138672, Singapore. FAU - Layton, Emma AU - Layton E AD - GIS Efficient Rapid Microbial Sequencing, Genome Institute of Singapore, A*STAR, 138672, Singapore. FAU - Low, Donovan AU - Low D AD - Singapore Immunology Network, A*STAR, 138648, Singapore. FAU - De Sessions, Paola Florez AU - De Sessions PF AD - GIS Efficient Rapid Microbial Sequencing, Genome Institute of Singapore, A*STAR, 138672, Singapore. FAU - Pettersson, Sven AU - Pettersson S AD - Lee Kong Chian School of Medicine, Nanyang Technological University, 637551, Singapore; Singapore Centre for Environmental Life Sciences Engineering, 60 Nanyang Drive, 637551, Singapore. FAU - Ginhoux, Florent AU - Ginhoux F AD - Singapore Immunology Network, A*STAR, 138648, Singapore. FAU - Pouladi, Mahmoud A AU - Pouladi MA AD - Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 138648, Singapore; Department of Medicine, National University of Singapore, 117597, Singapore; Department of Physiology, National University of Singapore, 117597, Singapore. Electronic address: map@pouladilab.org. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190223 PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 SB - IM RPI - Neurobiol Dis. 2020 Feb;135:104744. PMID: 31931139 MH - Animals MH - Corpus Callosum/*pathology MH - Disease Models, Animal MH - Gastrointestinal Microbiome/*physiology MH - Huntington Disease/*microbiology/pathology MH - Mice MH - Myelin Sheath/*pathology MH - Neuronal Plasticity/*physiology MH - White Matter/*pathology OTO - NOTNLM OT - BACHD OT - Germ-free OT - Huntington disease OT - Microbiome OT - Microbiota OT - Myelination OT - Oligodendrocytes OT - White matter EDAT- 2019/02/26 06:00 MHDA- 2020/01/10 06:00 CRDT- 2019/02/26 06:00 PHST- 2018/09/04 00:00 [received] PHST- 2019/02/02 00:00 [revised] PHST- 2019/02/20 00:00 [accepted] PHST- 2019/02/26 06:00 [pubmed] PHST- 2020/01/10 06:00 [medline] PHST- 2019/02/26 06:00 [entrez] AID - S0969-9961(18)30551-5 [pii] AID - 10.1016/j.nbd.2019.02.011 [doi] PST - ppublish SO - Neurobiol Dis. 2019 Jul;127:65-75. doi: 10.1016/j.nbd.2019.02.011. Epub 2019 Feb 23.