{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T20:52:22Z","timestamp":1771707142127,"version":"3.50.1"},"reference-count":29,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2005,9,9]],"date-time":"2005-09-09T00:00:00Z","timestamp":1126224000000},"content-version":"vor","delay-in-days":6461,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Teratog Carcinog Mutagen"],"published-print":{"date-parts":[[1988,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Benomyl, a benzimidazole fungicide, was administered by gavage to pregnant Sprague\u2010Dawley rats in a daily dose of 62.5 mg\/kg of maternal body weight beginning at gestational day (GD) 7. Fetuses examined histologically at GD16 or GD20 revealed a high incidence of craniocerebral anomalies\u201482.6% of those examined at GD16 and 100% of those examined at GD20. Hydrocephalus occurred in 65.2% of fetuses examined at GD16 and in 58.8% at GD20 but was more severe in the GD20 fetuses. A second common anomaly, termed periventricular \u201covergrowth\u201d (PVO), consisted of subependymal cell masses that in some fetuses obliterated normal subcortical structures. PVO occurred in 34.8% of fetuses examined at GD16 and 76.5% at GD20. The size of the subependymal masses and the regions involved were considerably greater in the GD20 than the GD16 fetuses. Less common anomalies in the GD20 fetuses were periventricular necrosis (41.2%), a single fetus with exencephaly and another with porencephaly.<\/jats:p><jats:p>In the majority of malformed fetuses, the severity of hydrocephalus did not parallel the severity of PVO around the lateral and third ventricles. PVO involved tissues surrounding the cerebral aqueduct in 17.4% of GD16 fetuses and 38.2% of GD20 fetuses. This \u201covergrowth\u201d distorted the cerebral aqueduct in a large number of fetuses with ventriculomegaly, and at GD20 moderate and severe ventriculomegaly was in every instance associated with a narrow or completely occluded cerebral aqueduct. These relationships suggest that PVO in the midbrain may play a role in the production of aqueductal stenosis and hydrocephalus in this experimental model.<\/jats:p>","DOI":"10.1002\/tcm.1770080607","type":"journal-article","created":{"date-parts":[[2006,2,4]],"date-time":"2006-02-04T12:25:13Z","timestamp":1139055913000},"page":"377-391","source":"Crossref","is-referenced-by-count":14,"title":["Relationship of periventricular overgrowth to hydrocephalus in brains of fetal rats exposed to benomyl"],"prefix":"10.1002","volume":"8","author":[{"given":"William G.","family":"Ellis","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francis","family":"De Roos","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert J.","family":"Kavlock","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frances 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