PURPOSE: The safety and efficacy of prescribing a single maternal course of corticosteroid during pregnancy has been documented in human trials. However, the current trend is to prescribe repeated courses of corticosteroid. We investigated an aspect of the safety of this practice in an animal model. METHODS: Date-mated ewes received saline, single or four corticosteroid injections between days 104 and 124 of gestation (term = 150). Lambs were delivered on day 125 or 145 by caesarian section after spinal anaesthesia. Eye diameters were measured and semi-thin toluidine-blue-stained transverse sections of retinae were analysed using an Optimus Image Analysis program. RESULTS: At 125 days, retinal measures in the ventral periphery and area centralis were significantly thinner than control (p = 0.0001). At 145 days, total eye size was significantly reduced compared with control (p = 0.03), and retinal measures in the ventral periphery (p = 0.0001), but not the area centralis (p = 0.19), remained significantly different from control. CONCLUSION: Repeated maternal administration of corticosteroid may affect retinal maturation in the fetus.
PURPOSE: The safety and efficacy of prescribing a single maternal course of corticosteroid during pregnancy has been documented in human trials. However, the current trend is to prescribe repeated courses of corticosteroid. We investigated an aspect of the safety of this practice in an animal model. METHODS: Date-mated ewes received saline, single or four corticosteroid injections between days 104 and 124 of gestation (term = 150). Lambs were delivered on day 125 or 145 by caesarian section after spinal anaesthesia. Eye diameters were measured and semi-thin toluidine-blue-stained transverse sections of retinae were analysed using an Optimus Image Analysis program. RESULTS: At 125 days, retinal measures in the ventral periphery and area centralis were significantly thinner than control (p = 0.0001). At 145 days, total eye size was significantly reduced compared with control (p = 0.03), and retinal measures in the ventral periphery (p = 0.0001), but not the area centralis (p = 0.19), remained significantly different from control. CONCLUSION: Repeated maternal administration of corticosteroid may affect retinal maturation in the fetus.
Authors: Michael W Church; Ronald J Wapner; Lisa M Mele; Francee Johnson; Donald J Dudley; Catherine Y Spong; Alan M Peaceman; Atef H Moawad; Mary J O'Sullivan; Menachem Miodovnik Journal: Neurotoxicol Teratol Date: 2010-05-27 Impact factor: 3.763
Authors: Nir Melamed; Elizabeth Asztalos; Kellie Murphy; Arthur Zaltz; Donald Redelmeier; Baiju R Shah; Jon Barrett Journal: BMJ Open Date: 2019-09-30 Impact factor: 2.692