Open AccessOffspring of rats with cerebral hypoxia-ischemia manifest cognitive dysfunction in learning and memory abilities
Author(s) -
LuLu Xue,
Fang Wang,
RuiZe Niu,
YaXin Tan,
Lingyun Jia,
Jing Yuan,
Zheng Ma,
Zibin Zhang,
Ya Jiang,
Li Chen,
Qingjie Xia,
Junjie Chen,
TingHua Wang,
LiuLin Xiong
Publication year - 2020
Publication title -
neural regeneration research/neural regeneration research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.93
H-Index - 38
eISSN - 1876-7958
pISSN - 1673-5374
DOI - 10.4103/1673-5374.276359
Subject(s) - offspring , hypoxic ischemic encephalopathy , medicine , encephalopathy , hypoxia (environmental) , brain damage , ischemia , pediatrics , anesthesia , physiology , pregnancy , chemistry , genetics , organic chemistry , oxygen , biology
Neonatal hypoxic-ischemic encephalopathy is a serious neurological disease, often resulting in long-term neurodevelopmental disorders among surviving children. However, whether these neurodevelopmental issues can be passed to offspring remains unclear. The right common carotid artery of 7-day-old parental-generation rats was subjected to permanent ligation using a vessel electrocoagulator. Neonatal hypoxic-ischemic rat models were established by subjecting the rats to 8% O 2 -92% N 2 for 2 hours. The results showed that 24 hours after hypoxia and ischemia, pathological damage, cerebral atrophy, liquefaction, and impairment were found, and Zea-Longa scores were significantly increased. The parental-generation rats were propagated at 3 months old, and offspring were obtained. No changes in the overall brain structures of these offspring rats were identified by magnetic resonance imaging. However, the escape latency was longer and the number of platform crossings was reduced among these offspring compared with normal rats. These results indicated that the offspring of hypoxic-ischemic encephalopathy model rats displayed cognitive impairments in learning and memory. This study was approved by the Animal Care & Welfare Committee of Kunming Medical University, China in 2018 (approval No. kmmu2019072).