Cerebrolysin improves cognitive performance in rats after mild traumatic brain injury
| Autor: | Yanlu Zhang, Edith Doppler, Stefan Winter, Asim Mahmood, Michael Chopp, Ye Xiong, Timothy J Schallert, Yuling Meng, Zheng G ang Zhang |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Male
medicine.medical_specialty Doublecortin Protein Traumatic brain injury Acceleration Morris water navigation task Poison control Cell Count chemistry.chemical_compound Neurotrophic factors medicine Animals Effects of sleep deprivation on cognitive performance Amino Acids Rats Wistar Maze Learning Social Behavior Amyloid beta-Peptides business.industry Neurogenesis Brain Recognition Psychology medicine.disease Rats Astrogliosis Surgery Neuroprotective Agents chemistry Astrocytes Brain Injuries Cerebrolysin Anesthesia Cognition Disorders business Psychomotor Performance |
| Zdroj: | Journal of Neurosurgery. 122:843-855 |
| ISSN: | 1933-0693 0022-3085 |
| Popis: | OBJECT Long-term memory deficits occur after mild traumatic brain injuries (mTBIs), and effective treatment modalities are currently unavailable. Cerebrolysin, a peptide preparation mimicking the action of neurotrophic factors, has beneficial effects on neurodegenerative diseases and brain injuries. The present study investigated the long-term effects of Cerebrolysin treatment on cognitive function in rats after mTBI. METHODS Rats subjected to closed-head mTBI were treated with saline (n = 11) or Cerebrolysin (2.5 ml/kg, n = 11) starting 24 hours after injury and then daily for 28 days. Sham animals underwent surgery without injury (n = 8). To evaluate cognitive function, the modified Morris water maze (MWM) test and a social odor–based novelty recognition task were performed after mTBI. All rats were killed on Day 90 after mTBI, and brain sections were immunostained for histological analyses of amyloid precursor protein (APP), astrogliosis, neuroblasts, and neurogenesis. RESULTS Mild TBI caused long-lasting cognitive memory deficits in the MWM and social odor recognition tests up to 90 days after injury. Compared with saline treatment, Cerebrolysin treatment significantly improved both long-term spatial learning and memory in the MWM test and nonspatial recognition memory in the social odor recognition task up to 90 days after mTBI (p < 0.05). Cerebrolysin significantly increased the number of neuroblasts and promoted neurogenesis in the dentate gyrus, and it reduced APP levels and astrogliosis in the corpus callosum, cortex, dentate gyrus, CA1, and CA3 regions (p < 0.05). CONCLUSIONS These results indicate that Cerebrolysin treatment of mTBI improves long-term cognitive function, and this improvement may be partially related to decreased brain APP accumulation and astrogliosis as well as increased neuroblasts and neurogenesis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|