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Updated: Aug 22, 2026
The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
Published on: November 19, 2008
Effect of propentofylline on hypoxic-ischaemic brain damage in newborn rat
Xiao-yan Xia1, Hiroshi Sameshima, Arturo Ota
1Beijing Obstetrics and Gynaecology Hospital, Beijing 100006, China. natus420@hotmail.com
Insights
Propentofylline administration after hypoxic-ischaemic brain injury in neonatal rats significantly reduced brain damage. This treatment also improved body mass gain and behavioral outcomes in the young rats.
Area of Science:
- Neuroscience
- Neonatal Research
- Pharmacology
Background:
- Propentofylline enhances adenosine action and protects against cerebral ischemia.
- Neonatal hypoxic-ischaemic brain damage is a significant clinical concern.
Purpose of the Study:
- To investigate the neuroprotective effects of propentofylline in a neonatal rat model of hypoxic-ischaemic brain damage.
Main Methods:
- Seven-day-old Wistar rats underwent unilateral carotid artery ligation and hypoxia.
- Propentofylline (10 mg/kg) was administered intraperitoneally one hour post-insult.
- Outcomes assessed included body mass gain, behavioral alterations, and neurohistological changes at 72 hours.
Main Results:
- Propentofylline treatment significantly improved body mass gain and behavioral performance compared to saline controls.
- A notable reduction in brain damage to the cerebral cortex and dentate gyrus was observed in the treated group.
- Specific improvements included enhanced body mass gain at 24h (100.2%) and 48h (110.3%) post-insult.
Conclusions:
- Propentofylline effectively attenuates hypoxic-ischaemic brain damage in neonatal rats.
- The drug administration post-insult improved both physical and neurological recovery.
- Findings suggest propentofylline as a potential therapeutic agent for neonatal brain injury.
Background:
Studies showed that propentofylline enhances the action of adenosine and protects hippocampal neuronal damage against transient global cerebral ischaemia. Our study was to investigate the effect of propentofylline on hypoxic-ischaemic brain damage in neonatal rat.
Methods:
Seven-day-old Wistar rats were subjected to unilateral common carotid artery ligation and hypoxia in oxygen 8 kPa for two hours at 37 degrees C. Propentofylline (10 mg/kg) was administered intraperitoneally one hour after hypoxia-ischaemia (treated group). Control group rats were received an equivalent volume of saline. The effects of propentofylline were assessed by observing the body mass gain, behavioural alteration and neurohistological changes. The rats were sacrificed at 72 hours after hypoxia-ischaemia, and the brain sections were examined after haematoxylin and eosin staining.
Results:
The propentofylline-treated rats had better body mass gain and better behavioural response than the paired saline-controls did. In the control group, the rats either lost body mass or had little mass gain after the insult, their average body mass gain was 97.3% at 24 h, 100.3% at 48 h, and 114.1% at 72 h of recovery. In propentofylline-treated group, there was a significant improvement of body mass gain at 24 h (100.2%, P < 0.05) and 48 h (110.3%, P < 0.01) of recovery; the percentage of rats that performed well on behavioural test was significantly higher from 48 h to 72 h of recovery (P < 0.05); the incidence of severe brain damage to the cerebral cortex and dentate gyrus was significantly reduced in propentofylline-treated rats (cortex, 93% - 70.8%, P < 0.01; dentate gyrus 95% - 66.7%, P < 0.01) as compared with control rats.
Conclusions:
Administration of propentofylline 1 hour after hypoxia-ischaemia significantly attenuates brain damage in both the cerebral cortex and dentate gyrus, and also improves the body mass gain as well as behavioural disturbance in 7-day-old rats.
