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Long-term neuropathological and/or neurobehavioral effects of antenatal corticosteroid therapy in animal models: a systematic review
Pediatric Research ( IF 3.1 ) Pub Date : 2019-12-10 , DOI: 10.1038/s41390-019-0712-1
Johannes L van der Merwe 1, 2 , Adalina Sacco 3 , Jaan Toelen 1, 4 , Jan Deprest 1, 2, 3
Affiliation  

Background Antenatal corticosteroids (ACSs) are recommended to all women at risk for preterm delivery; currently, there is controversy about the subsequent long-term neurocognitive sequelae. This systematic review summarizes the long-term neurodevelopmental outcomes after ACS therapy in animal models. Methods An electronic search strategy incorporating MeSH and keywords was performed using all known literature databases and in accordance with PRISMA guidance (PROSPERO CRD42019119663). Results Of the 669 studies identified, eventually 64 were included. The majority of studies utilized dexamethasone at relative high dosages and primarily involved rodents. There was a high risk of bias, mostly due to lack of randomization, allocation concealment, and blinding. The main outcomes reported on was neuropathological, particularly glucocorticoid receptor expression and neuron densities, and neurobehavior. Overall there was an upregulation of glucocorticoid receptors with lower neuron densities and a dysregulation of the dopaminergic and serotonergic systems. This coincided with various adverse neurobehavioral outcomes. Conclusions In animal models, ACSs consistently lead to deleterious long-term neurocognitive effects. This may be due to the specific agents, i.e., dexamethasone, or the repetitive/higher total dosing used. ACS administration varied significantly between studies and there was a high risk of bias. Future research should be standardized in well-characterized models.

中文翻译:

动物模型中产前皮质类固醇治疗的长期神经病理学和/或神经行为影响:系统评价

背景 向所有有早产风险的妇女推荐产前皮质类固醇 (ACS);目前,对于后续长期的神经认知后遗症存在争议。本系统综述总结了动物模型中 ACS 治疗后的长期神经发育结果。方法 使用所有已知文献数据库并根据 PRISMA 指南 (PROSPERO CRD42019119663) 执行结合 MeSH 和关键字的电子搜索策略。结果 在确定的 669 项研究中,最终纳入了 64 项。大多数研究使用相对高剂量的地塞米松,主要涉及啮齿动物。偏倚风险很高,主要是由于缺乏随机化、分配隐藏和盲法。报告的主要结果是神经病理学、特别是糖皮质激素受体表达和神经元密度,以及神经行为。总体而言,糖皮质激素受体上调,神经元密度降低,多巴胺能和血清素能系统失调。这与各种不利的神经行为结果相吻合。结论 在动物模型中,ACS 持续导致有害的长期神经认知影响。这可能是由于特定的药物,即地塞米松,或使用的重复/更高的总剂量。ACS 给药在不同研究之间差异很大,并且存在很高的偏倚风险。未来的研究应该在充分表征的模型中标准化。总体而言,糖皮质激素受体上调,神经元密度降低,多巴胺能和血清素能系统失调。这与各种不利的神经行为结果相吻合。结论 在动物模型中,ACS 持续导致有害的长期神经认知影响。这可能是由于特定的药物,即地塞米松,或使用的重复/更高的总剂量。ACS 给药在不同研究之间差异很大,并且存在很高的偏倚风险。未来的研究应该在充分表征的模型中标准化。总体而言,糖皮质激素受体上调,神经元密度降低,多巴胺能和血清素能系统失调。这与各种不利的神经行为结果相吻合。结论 在动物模型中,ACS 持续导致有害的长期神经认知影响。这可能是由于特定的药物,即地塞米松,或使用的重复/更高的总剂量。ACS 给药在不同研究之间差异很大,并且存在很高的偏倚风险。未来的研究应该在充分表征的模型中标准化。或使用重复/更高的总剂量。ACS 给药在不同研究之间差异很大,并且存在很高的偏倚风险。未来的研究应该在充分表征的模型中标准化。或使用重复/更高的总剂量。ACS 给药在不同研究之间差异很大,并且存在很高的偏倚风险。未来的研究应该在充分表征的模型中标准化。
更新日期:2019-12-10
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