{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T11:27:58Z","timestamp":1790508478747,"version":"4.1.0"},"reference-count":56,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012545","name":"Foundation for Research in Science and the Humanities","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100012545","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Mol. Neurosci."],"abstract":"<jats:p>\n                    One important function of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors is the control of neuronal activity to prevent overexcitation and thereby excitotoxic death, which is a hallmark of cerebral ischemia. Consequently, sustained activation of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors with the selective agonist baclofen provides neuroprotection in\n                    <jats:italic>in vitro<\/jats:italic>\n                    and\n                    <jats:italic>in vivo<\/jats:italic>\n                    models of cerebral ischemia. However, excitotoxic conditions severely downregulate the receptors, which would compromise the neuroprotective effectiveness of baclofen. On the other hand, recent work suggests that sustained activation of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors stabilizes receptor expression. Therefore, we addressed the question whether sustained activation of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors reduces downregulation of the receptor under excitotoxic conditions and thereby preserves GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptor-mediated inhibition. In cultured neurons subjected to oxygen and glucose deprivation (OGD), to mimic cerebral ischemia, GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors were severely downregulated. Treatment of the cultures with baclofen after OGD restored GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptor expression and reduced loss of neurons. Restoration of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors was due to enhanced fast recycling of the receptors, which reduced OGD-induced sorting of the receptors to lysosomal degradation. Utilizing the middle cerebral artery occlusion (MCAO) mouse model of cerebral ischemia, we verified the severe downregulation of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors in the affected cortex and a partial restoration of the receptors after systemic injection of baclofen. Restored receptor expression recovered GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptor-mediated currents, normalized the enhanced neuronal excitability observed after MCAO and limited progressive loss of neurons. These results suggest that baclofen-induced restoration of GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors provides the basis for the neuroprotective activity of baclofen after an ischemic insult. Since GABA\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    receptors regulate multiple beneficial pathways, they are promising targets for a neuroprotective strategy in acute cerebral ischemia.\n                  <\/jats:p>","DOI":"10.3389\/fnmol.2021.726133","type":"journal-article","created":{"date-parts":[[2021,9,3]],"date-time":"2021-09-03T21:37:31Z","timestamp":1630705051000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":20,"title":["Sustained Baclofen-Induced Activation of GABAB Receptors After Cerebral Ischemia Restores Receptor Expression and Function and Limits Progressing Loss of Neurons"],"prefix":"10.3389","volume":"14","author":[{"given":"Mohammad","family":"Hleihil","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Markus","family":"Vaas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Musadiq A.","family":"Bhat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karthik","family":"Balakrishnan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dietmar","family":"Benke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2021,9,1]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"804","DOI":"10.1002\/jnr.10169","article-title":"Baclofen is neuroprotective and prevents loss of calcium\/calmodulin-dependent protein kinase II immunoreactivity in the ischemic gerbil hippocampus.","volume":"67","author":"Babcock","year":"2002","journal-title":"J. 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