Ovarian stimulation perturbs methylation status of placental imprinting genes and reduces blood pressure in the second generation offspring.

Assisted reproductive technology (ART) is associated with DNA methylation dysfunction of offspring. However, it is unclear whether ovarian stimulation (OS) is responsible for DNA methylation dysfunction of offspring STUDY DESIGN: We built the first-generation (F1) and second-generation (F2) offspring mice model of ovarian stimulation. Bodyweight of F1 and F2 were measured. Expression levels of several imprinted genes (Impact, H19, Igf2, Plagl1, Mest, and Snrpn) in F1 placenta were tested. Methylation status of Plagl1 and H19 promoters was examined with bisulfite sequencing. Glucose tolerance, blood pressure, and heart rate were evaluated in F2 mice. The OS F1 showed elevated bodyweights in the 2nd, 3rd and 4th weeks, but the difference disappeared in the 5th week. Plagl1 was down-regulated in OS F1. Promoters of Plagl1 and H19 were also hypermethylated in OS F1. F2 of OS mice had the similar bodyweight and glucose tolerance compared with the control F2. However, F2 of OS ♂F1+OS♀ F1 showed the decreased systolic pressure, diastolic pressure, and heart rate. Ovarian stimulation perturbs expression levels and methylation status of imprinted genes in offspring. The effect of ovarian stimulation may be passed to F2. Copyright © 2017 Elsevier B.V. All rights reserved.

Citation

Gu-Feng Xu, Yun Liao, Jing-Yi Li, Yi-Feng Liu, Yun Huang, Yi-Qing Wu, Juan Liu, Ping-Ping Lv, Run-Jv Zhang, Dan Zhang. Ovarian stimulation perturbs methylation status of placental imprinting genes and reduces blood pressure in the second generation offspring. European journal of obstetrics, gynecology, and reproductive biology. 2017 Apr;211:140-145

Mesh Tags

Substances

PMID: 28259006

search → result