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Emerging roles for ...
Emerging roles for dynamic aquaporin-4 subcellular relocalization in CNS water homeostasis
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- Salman, Mootaz M. (författare)
- University of Oxford
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- Kitchen, Philip (författare)
- Aston University
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- Halsey, Andrea (författare)
- University of Birmingham
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- Wang, Marie Xun (författare)
- Washington University School of Medicine
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- Törnroth-Horsefield, Susanna (författare)
- Lund University,Lunds universitet,Biokemi och Strukturbiologi,Centrum för Molekylär Proteinvetenskap,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biochemistry and Structural Biology,Center for Molecular Protein Science,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Conner, Alex C. (författare)
- University of Birmingham
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Badaut, Jerome (författare)
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- Iliff, Jeffrey J. (författare)
- Washington University School of Medicine,VA Puget Sound Health Care System
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- Bill, Roslyn M. (författare)
- Aston University
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(creator_code:org_t)
- 2021-09-09
- 2022
- Engelska.
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Ingår i: Brain. - : Oxford University Press (OUP). - 0006-8950 .- 1460-2156. ; 145:1, s. 64-75
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http://dx.doi.org/10... (free)
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https://academic.oup...
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Abstract
Ämnesord
Stäng
- Aquaporin channels facilitate bidirectional water flow in all cells and tissues. AQP4 is highly expressed in astrocytes. In the CNS, it is enriched in astrocyte endfeet, at synapses, and at the glia limitans, where it mediates water exchange across the blood-spinal cord and blood-brain barriers (BSCB/BBB), and controls cell volume, extracellular space volume, and astrocyte migration. Perivascular enrichment of AQP4 at the BSCB/BBB suggests a role in glymphatic function. Recently, we have demonstrated that AQP4 localization is also dynamically regulated at the subcellular level, affecting membrane water permeability. Ageing, cerebrovascular disease, traumatic CNS injury, and sleep disruption are established and emerging risk factors in developing neurodegeneration, and in animal models of each, impairment of glymphatic function is associated with changes in perivascular AQP4 localization. CNS oedema is caused by passive water influx through AQP4 in response to osmotic imbalances. We have demonstrated that reducing dynamic relocalization of AQP4 to the BSCB/BBB reduces CNS oedema and accelerates functional recovery in rodent models. Given the difficulties in developing pore-blocking AQP4 inhibitors, targeting AQP4 subcellular localization opens up new treatment avenues for CNS oedema, neurovascular and neurodegenerative diseases, and provides a framework to address fundamental questions about water homeostasis in health and disease.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Cellbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Cell Biology (hsv//eng)
Nyckelord
- neurodegeneration
- regulation
- traumatic brain and spinal cord injury
- water channel
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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