PMID- 24743889 OWN - NLM STAT- MEDLINE DCOM- 20141209 LR - 20211021 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 15 IP - 4 DP - 2014 Apr 16 TI - The role of pericytes in neurovascular unit remodeling in brain disorders. PG - 6453-74 LID - 10.3390/ijms15046453 [doi] AB - Neurons are extremely vulnerable cells that tightly rely on the brain's highly dynamic and complex vascular network that assures an accurate and adequate distribution of nutrients and oxygen. The neurovascular unit (NVU) couples neuronal activity to vascular function, controls brain homeostasis, and maintains an optimal brain microenvironment adequate for neuronal survival by adjusting blood-brain barrier (BBB) parameters based on brain needs. The NVU is a heterogeneous structure constituted by different cell types that includes pericytes. Pericytes are localized at the abluminal side of brain microvessels and contribute to NVU function. Pericytes play essential roles in the development and maturation of the neurovascular system during embryogenesis and stability during adulthood. Initially, pericytes were described as contractile cells involved in controlling neurovascular tone. However, recent reports have shown that pericytes dynamically respond to stress induced by injury upon brain diseases, by chemically and physically communicating with neighboring cells, by their immune properties and by their potential pluripotent nature within the neurovascular niche. As such, in this paper, we would like to review the role of pericytes in NVU remodeling, and their potential as targets for NVU repair strategies and consequently neuroprotection in two pathophysiologically distinct brain disorders: ischemic stroke and Alzheimer's disease (AD). FAU - ElAli, Ayman AU - ElAli A AD - Neuroscience Laboratory, CHU de Quebec Research Center and Department of Molecular Medicine, Faculty of Medicine, Laval University, 2705 Laurier boul., Quebec City, QC G1V 4G2, Canada. ayman.el-ali@crchuq.ulaval.ca. FAU - Theriault, Peter AU - Theriault P AD - Neuroscience Laboratory, CHU de Quebec Research Center and Department of Molecular Medicine, Faculty of Medicine, Laval University, 2705 Laurier boul., Quebec City, QC G1V 4G2, Canada. peter.theriault@crchuq.ulaval.ca. FAU - Rivest, Serge AU - Rivest S AD - Neuroscience Laboratory, CHU de Quebec Research Center and Department of Molecular Medicine, Faculty of Medicine, Laval University, 2705 Laurier boul., Quebec City, QC G1V 4G2, Canada. serge.rivest@crchul.ulaval.ca. LA - eng GR - Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20140416 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Extracellular Matrix Proteins) SB - IM MH - ATP-Binding Cassette Transporters/metabolism MH - Blood-Brain Barrier/metabolism MH - Brain Diseases/*metabolism/pathology MH - Extracellular Matrix Proteins/metabolism MH - Humans MH - Neurons/metabolism MH - Pericytes/cytology/*metabolism MH - Signal Transduction PMC - PMC4013640 EDAT- 2014/04/20 06:00 MHDA- 2014/12/15 06:00 PMCR- 2014/04/01 CRDT- 2014/04/19 06:00 PHST- 2014/02/17 00:00 [received] PHST- 2014/04/01 00:00 [revised] PHST- 2014/04/08 00:00 [accepted] PHST- 2014/04/19 06:00 [entrez] PHST- 2014/04/20 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] PHST- 2014/04/01 00:00 [pmc-release] AID - ijms15046453 [pii] AID - ijms-15-06453 [pii] AID - 10.3390/ijms15046453 [doi] PST - epublish SO - Int J Mol Sci. 2014 Apr 16;15(4):6453-74. doi: 10.3390/ijms15046453.