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Developmental exposure to near roadway pollution produces behavioral phenotypes relevant to neurodevelopmental disorders in juvenile rats.
Translational Psychiatry ( IF 6.8 ) Pub Date : 2020-08-17 , DOI: 10.1038/s41398-020-00978-0
Elizabeth L Berg 1 , Lauren R Pedersen 1 , Michael C Pride 1 , Stela P Petkova 1 , Kelley T Patten 2 , Anthony E Valenzuela 2 , Christopher Wallis 3 , Keith J Bein 3 , Anthony Wexler 3 , Pamela J Lein 2 , Jill L Silverman 1
Affiliation  

Epidemiological studies consistently implicate traffic-related air pollution (TRAP) and/or proximity to heavily trafficked roads as risk factors for developmental delays and neurodevelopmental disorders (NDDs); however, there are limited preclinical data demonstrating a causal relationship. To test the effects of TRAP, pregnant rat dams were transported to a vivarium adjacent to a major freeway tunnel system in northern California where they were exposed to TRAP drawn directly from the face of the tunnel or filtered air (FA). Offspring remained housed under the exposure condition into which they were born and were tested in a variety of behavioral assays between postnatal day 4 and 50. To assess the effects of near roadway exposure, offspring of dams housed in a standard research vivarium were tested at the laboratory. An additional group of dams was transported halfway to the facility and then back to the laboratory to control for the effect of potential transport stress. Near roadway exposure delayed growth and development of psychomotor reflexes and elicited abnormal activity in open field locomotion. Near roadway exposure also reduced isolation-induced 40-kHz pup ultrasonic vocalizations, with the TRAP group having the lowest number of call emissions. TRAP affected some components of social communication, evidenced by reduced neonatal pup ultrasonic calling and altered juvenile reciprocal social interactions. These findings confirm that living in close proximity to highly trafficked roadways during early life alters neurodevelopment.



中文翻译:

发育暴露于附近道路污染会产生与幼年大鼠神经发育障碍相关的行为表型。

流行病学研究始终将交通相关的空气污染 (TRAP) 和/或靠近交通繁忙的道路作为发育迟缓和神经发育障碍 (NDD) 的风险因素;然而,有限的临床前数据证明了因果关系。为了测试 TRAP 的影响,怀孕的大鼠水坝被运送到加利福尼亚北部主要高速公路隧道系统附近的饲养室,在那里它们暴露于直接从隧道表面抽取的 TRAP 或过滤空气 (FA)。后代仍被安置在其出生时所处的暴露条件下,并在出生后第 4 天至第 50 天之间在各种行为分析中进行了测试。为了评估靠近道路暴露的影响,安置在标准研究动物饲养箱中的水坝后代在实验室。另一组水坝被运送到该设施的中途,然后返回实验室以控制潜在的运输压力的影响。靠近道路的暴露延迟了精神运动反射的生长和发育,并在旷场运动中引发异常活动。靠近道路的暴露也减少了隔离引起的 40 kHz 幼犬超声波发声,其中 TRAP 组的呼叫发射数量最少。TRAP 影响了社会交流的某些组成部分,这可以通过减少新生幼犬的超声波呼叫和改变幼年互惠社会互动来证明。这些发现证实,在生命早期生活在交通繁忙的道路附近会改变神经发育。靠近道路的暴露延迟了精神运动反射的生长和发育,并在旷场运动中引发异常活动。靠近道路的暴露也减少了隔离引起的 40 kHz 幼犬超声波发声,其中 TRAP 组的呼叫发射数量最少。TRAP 影响了社会交流的某些组成部分,这可以通过减少新生幼犬的超声波呼叫和改变幼年互惠社会互动来证明。这些发现证实,在生命早期生活在交通繁忙的道路附近会改变神经发育。靠近道路的暴露延迟了精神运动反射的生长和发育,并在旷场运动中引发异常活动。靠近道路的暴露也减少了隔离引起的 40 kHz 幼犬超声波发声,其中 TRAP 组的呼叫发射数量最少。TRAP 影响了社会交流的某些组成部分,这可以通过减少新生幼犬的超声波呼叫和改变幼年互惠社会互动来证明。这些发现证实,在生命早期生活在交通繁忙的道路附近会改变神经发育。TRAP 组的呼叫发射数量最少。TRAP 影响了社会交流的某些组成部分,这可以通过减少新生幼犬的超声波呼叫和改变幼年互惠社会互动来证明。这些发现证实,在生命早期生活在交通繁忙的道路附近会改变神经发育。TRAP 组的呼叫发射数量最少。TRAP 影响了社会交流的某些组成部分,这可以通过减少新生幼犬的超声波呼叫和改变幼年互惠社会互动来证明。这些发现证实,在生命早期生活在交通繁忙的道路附近会改变神经发育。

更新日期:2020-08-18
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