{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T22:42:32Z","timestamp":1778712152868,"version":"3.51.4"},"reference-count":59,"publisher":"The Endocrine Society","issue":"6","license":[{"start":{"date-parts":[[2018,4,10]],"date-time":"2018-04-10T00:00:00Z","timestamp":1523318400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["23659772"],"award-info":[{"award-number":["23659772"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["15K20127"],"award-info":[{"award-number":["15K20127"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,6,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Brain damage caused by hypoxic ischemic insult during the perinatal period causes hypoxic ischemic encephalopathies (HIEs). Therapeutic hypothermia is indicated for HIE, but because the therapeutic burden is large for its limited therapeutic effectiveness, another strategy is needed. Progesterone (P4) plays a neuroprotective role through the actions of its metabolite, allopregnanolone (Allo), on P4 receptor, \u03b3-aminobutyric acid type A receptors or both. We examined the therapeutic potential of P4 using a newborn rat model of HIE. Fetal rats were exposed to transient ischemic hypoxia by 30-minute bilateral uterine artery clamping on gestational day 18. After spontaneous birth, newborn pups were subcutaneously injected with P4 (0.10 or 0.01 mg), medroxyprogesterone acetate (MPA; 0.12 mg), or Allo (0.10 mg) through postnatal days (PDs) 1 to 9. Brain damage in the rats was assessed using the rotarod test at PD50. The HIE insult reduced the rats\u2019 ability in the rotarod task, which was completely reversed by P4 and Allo, but not by MPA. Histological examination revealed that the HIE insult decreased neuronal (the cortex and the hippocampal CA1 region) and oligodendroglial cell density (the corpus callosum) through PD0 to PD50. The axon fiber density and myelin sheath thickness in the corpus callosum were also reduced at PD50. The time-course study revealed that P4 restored oligodendroglial cells by PD5, which was followed by neuroprotective action of P4 that lasted long over the injection period. These results suggest that P4 protects the neonatal brain from HIE insult via restoration of oligodendroglial cells.<\/jats:p>","DOI":"10.1210\/en.2018-00148","type":"journal-article","created":{"date-parts":[[2018,4,10]],"date-time":"2018-04-10T18:03:58Z","timestamp":1523383438000},"page":"2264-2274","source":"Crossref","is-referenced-by-count":13,"title":["Progesterone as a Postnatal Prophylactic Agent for Encephalopathy Caused by Prenatal Hypoxic Ischemic Insult"],"prefix":"10.1210","volume":"159","author":[{"given":"Yoshimasa","family":"Kawarai","sequence":"first","affiliation":[{"name":"Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hirokazu","family":"Tanaka","sequence":"additional","affiliation":[{"name":"Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan"},{"name":"Department of Obstetrics and Gynecology, School of Medicine, International University of Health and Welfare, Narita, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tatsuya","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Makio","family":"Shozu","sequence":"additional","affiliation":[{"name":"Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"80","published-online":{"date-parts":[[2018,4,10]]},"reference":[{"issue":"10","key":"2020071621292810100_B1","doi-asserted-by":"crossref","first-page":"1235","DOI":"10.1177\/0883073816650039","article-title":"Association between perinatal hypoxic-ischemic conditions and attention-deficit\/hyperactivity disorder: a 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