PMID- 17056224 OWN - NLM STAT- MEDLINE DCOM- 20070409 LR - 20151119 IS - 0887-2333 (Print) IS - 0887-2333 (Linking) VI - 21 IP - 1 DP - 2007 Feb TI - Oxidative stress status and development of late organogenesis stage rat whole embryos cultured from gestational days 13.5 to 14.5. PG - 53-62 AB - A new method for culturing rodent whole embryos at the late organogenesis stage was developed using a roller-bottle system with intermittent gassing. Rat embryos were cultured for 24 h from gestational day (GD) 13.5 to 14.5. Growth and metabolic comparisons were made between in vivo embryos and embryos of the same GD cultured under various media and conditions. Crown-rump length, head length and protein content were used as growth indicators. Biologic markers such as embryonic tissue concentration of glutathione (GSH), glutathione disulfide (GSSG) and lipid peroxidation were used as assessments of metabolic activity in terms of oxidative stress. Embryos cultured with media consisting of either 15% or 20% male rat serum and balanced with Dulbecco's Modified Eagle Medium (DMEM) were found to most closely match in vivo embryos. 6 h gassing intervals and 5 mL medium volume/embryo provided optimal conditions for cultured embryos. By shortening the 24 h embryo culture period to 12 h, embryonic haemorrhaging was avoided. Moreover, the 12-h cultured embryos showed similar redox GSH/GSSG ratios and similar GSH content to the in vivo embryos, which was not observed in the embryos cultured under 24 h culture conditions. The present work demonstrates the utility of late organogenesis stage embryo culture as a model for the assessment of in vivo embryonic growth and oxidative stress indices. FAU - Liu, Jiun-Ni AU - Liu JN AD - School of Dietetics and Human Nutrition, Macdonald Campus of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 3V9. FAU - Chan, Hing Man AU - Chan HM FAU - Kubow, Stan AU - Kubow S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060914 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 RN - 0 (Biomarkers) RN - 0 (Culture Media) RN - 0 (Thiobarbituric Acid Reactive Substances) RN - GAN16C9B8O (Glutathione) SB - IM MH - Animals MH - Biomarkers MH - Culture Media MH - Embryo, Mammalian/*metabolism MH - Embryonic Development/*physiology MH - Female MH - Gestational Age MH - Glutathione/metabolism MH - Head/growth & development MH - Hemorrhage/chemically induced/pathology MH - Lipid Peroxidation/physiology MH - Male MH - Organ Culture Techniques MH - Organogenesis/*physiology MH - Oxidative Stress/*physiology MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley MH - Thiobarbituric Acid Reactive Substances/metabolism EDAT- 2006/10/24 09:00 MHDA- 2007/04/10 09:00 CRDT- 2006/10/24 09:00 PHST- 2006/06/08 00:00 [received] PHST- 2006/08/19 00:00 [revised] PHST- 2006/08/21 00:00 [accepted] PHST- 2006/10/24 09:00 [pubmed] PHST- 2007/04/10 09:00 [medline] PHST- 2006/10/24 09:00 [entrez] AID - S0887-2333(06)00171-8 [pii] AID - 10.1016/j.tiv.2006.08.012 [doi] PST - ppublish SO - Toxicol In Vitro. 2007 Feb;21(1):53-62. doi: 10.1016/j.tiv.2006.08.012. Epub 2006 Sep 14.