{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T13:47:26Z","timestamp":1777470446594,"version":"3.51.4"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T00:00:00Z","timestamp":1505088000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100007904","name":"Texas A and M University","doi-asserted-by":"publisher","award":["NIH AA18166\u20102"],"award-info":[{"award-number":["NIH AA18166\u20102"]}],"id":[{"id":"10.13039\/100007904","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007904","name":"Texas A and M University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007904","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vet Pharm & Therapeutics"],"published-print":{"date-parts":[[2018,4]]},"abstract":"The purpose of this study was to determine if concentrations of chlortetracycline could be detected in fetal plasma or tissues after administering an oral dose of chlortetracycline (CTC<\/jats:styled-content>; 500\u00a0mg\/head\/day) reported to be effective in controlling Campylobacter<\/jats:italic> spp. abortions. Five pregnant ewes were administered 250\u00a0mg\/head twice a day (total dose 500\u00a0mg\/hd\/d) for 7\u00a0days. On the beginning of day 7, intravenous catheters were surgically implanted or inserted into the fetus and dam. Plasma samples were collected from the ewe and fetus at various time points before and up to 36\u00a0hr after the last dose of CTC<\/jats:styled-content>. All ewes were then sacrificed, and tissues were harvested from the fetus for drug analysis. Concentrations of CTC<\/jats:styled-content> in maternal plasma were consistent with our previous study and below the minimum inhibitory concentration of Campylobacter<\/jats:italic> abortion isolates. Concentrations of CTC<\/jats:styled-content> were below the limit of detection in three of five fetal plasma samples and all of the placenta, amniotic fluid, and fetal stomach contents. Low concentrations were detectable in fetal kidney and liver, suggesting that CTC<\/jats:styled-content> reaches the fetus, although at a variable and low ratio when compared to maternal concentrations.<\/jats:p>","DOI":"10.1111\/jvp.12454","type":"journal-article","created":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T14:55:27Z","timestamp":1505141727000},"page":"218-223","source":"Crossref","is-referenced-by-count":6,"title":["Pharmacokinetics of chlortetracycline in maternal plasma and in fetal tissues following oral administration to pregnant ewes"],"prefix":"10.1111","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5291-3328","authenticated-orcid":false,"given":"K.","family":"Washburn","sequence":"first","affiliation":[{"name":"Large Animal Clinical Sciences College of Veterinary Medicine and Biomedical Sciences Texas A&M University College Station TX USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V. 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