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Disrupted ventricular\/subventricular zone progenitors and stem cells lead to CNS maldevelopment. Exploring models, we organ cultured the CP and transplanted fresh CP into a lateral ventricle of postnatal hydrocephalic (hyHTx) and nonhydrocephalic (nHTx) rats. After 60\u2009days in vitro, the cultured choroid ependyma formed spherical rings with beating cilia. Cultured CP expressed endocytotic caveolin 1 and apical aquaporin 1 and absorbed horseradish peroxidase from medium. Transthyretin secretory protein was secreted by organ-cultured CP into medium throughout 60\u2009days in vitro. Fresh CP, surviving at 1\u2009week after lateral ventricle implantation of nHTx or hyHTx did not block CSF flow. Avascular 1-week transplants in vivo expressed caveolin 1, aquaporin 1, and transthyretin, indicating that grafted CP may secrete trophic proteins but not CSF. Our findings encourage further exploration on CP organ culture and grafting for translational strategies. Because transplanted CP, though not producing CSF, may secrete beneficial molecules for developing brain injured by hydrocephalus, we propose that upon CP removal in hydrocephalus surgery, the fractionated tissue could be transplanted back (ventricular autograft).<\/jats:p>","DOI":"10.1093\/jnen\/nlaa028","type":"journal-article","created":{"date-parts":[[2020,5,17]],"date-time":"2020-05-17T17:08:34Z","timestamp":1589735314000},"page":"626-640","source":"Crossref","is-referenced-by-count":6,"title":["Organ Culture and Grafting of Choroid Plexus into the Ventricular CSF of Normal and Hydrocephalic HTx Rats"],"prefix":"10.1093","volume":"79","author":[{"given":"Conrad E","family":"Johanson","sequence":"first","affiliation":[{"name":"Department of Neurosurgery , Alpert Medical School at Brown University, Providence, Rhode Island"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karin","family":"V\u00edo","sequence":"additional","affiliation":[{"name":"Instituto de 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