Cerebrospinal fluid influx drives acute ischemic tissue swelling
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Cerebrospinal fluid influx drives acute ischemic tissue swelling. / Mestre, Humberto; Du, Ting; Sweeney, Amanda M.; Liu, Guojun; Samson, Andrew J.; Peng, Weiguo; Mortensen, Kristian Nygaard; Stæger, Frederik Filip; Bork, Peter A.R.; Bashford, Logan; Toro, Edna R.; Tithof, Jeffrey; Kelley, Douglas H.; Thomas, John H.; Hjorth, Poul G.; Martens, Erik A.; Mehta, Rupal I.; Solis, Orestes; Blinder, Pablo; Kleinfeld, David; Hirase, Hajime; Mori, Yuki; Nedergaard, Maiken.
In: Science, Vol. 367, No. 6483, eaaw7462, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Cerebrospinal fluid influx drives acute ischemic tissue swelling
AU - Mestre, Humberto
AU - Du, Ting
AU - Sweeney, Amanda M.
AU - Liu, Guojun
AU - Samson, Andrew J.
AU - Peng, Weiguo
AU - Mortensen, Kristian Nygaard
AU - Stæger, Frederik Filip
AU - Bork, Peter A.R.
AU - Bashford, Logan
AU - Toro, Edna R.
AU - Tithof, Jeffrey
AU - Kelley, Douglas H.
AU - Thomas, John H.
AU - Hjorth, Poul G.
AU - Martens, Erik A.
AU - Mehta, Rupal I.
AU - Solis, Orestes
AU - Blinder, Pablo
AU - Kleinfeld, David
AU - Hirase, Hajime
AU - Mori, Yuki
AU - Nedergaard, Maiken
PY - 2020
Y1 - 2020
N2 - Stroke affects millions each year. Poststroke brain edema predicts the severity of eventual stroke damage, yet our concept of how edema develops is incomplete and treatment options remain limited. In early stages, fluid accumulation occurs owing to a net gain of ions, widely thought to enter from the vascular compartment. Here, we used magnetic resonance imaging, radiolabeled tracers, and multiphoton imaging in rodents to show instead that cerebrospinal fluid surrounding the brain enters the tissue within minutes of an ischemic insult along perivascular flow channels. This process was initiated by ischemic spreading depolarizations along with subsequent vasoconstriction, which in turn enlarged the perivascular spaces and doubled glymphatic inflow speeds. Thus, our understanding of poststroke edema needs to be revised, and these findings could provide a conceptual basis for development of alternative treatment strategies.
AB - Stroke affects millions each year. Poststroke brain edema predicts the severity of eventual stroke damage, yet our concept of how edema develops is incomplete and treatment options remain limited. In early stages, fluid accumulation occurs owing to a net gain of ions, widely thought to enter from the vascular compartment. Here, we used magnetic resonance imaging, radiolabeled tracers, and multiphoton imaging in rodents to show instead that cerebrospinal fluid surrounding the brain enters the tissue within minutes of an ischemic insult along perivascular flow channels. This process was initiated by ischemic spreading depolarizations along with subsequent vasoconstriction, which in turn enlarged the perivascular spaces and doubled glymphatic inflow speeds. Thus, our understanding of poststroke edema needs to be revised, and these findings could provide a conceptual basis for development of alternative treatment strategies.
U2 - 10.1126/science.aax7171
DO - 10.1126/science.aax7171
M3 - Journal article
C2 - 32001524
AN - SCOPUS:85081917924
VL - 367
JO - Science
JF - Science
SN - 0036-8075
IS - 6483
M1 - eaaw7462
ER -
ID: 238530939