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Background: Centella asiatica is herbaceous plant that has medicinal value to improve learning and memory. Brainderived neurotrophic factor (BDNF) has a significant role in memory formation process, while oxidative stress causes memory impairment. Objective: This study aimed to investigate the effects of ethanol extracts of Centella asiatica leaf on memory performance and serum BDNF (neurotrophins) and Nitric Oxide(NO) concentration of rats following chronic electrical stress. Materials and Methods : Twenty male rats (Sprague Dawley) were divided into four groups: control/aquadest group and groups treated with three different doses (mg/kg) of Centella asiatica :150 (CeA150), 300 (CeA300) and 600 (CeA600). Memory performance was tested using probe test in Morris Water Maze before and after oral administration of ethanol extracts of Centella asiatica leaf followed by electrical stress for 28 days. At the last day of memory exercise following chronic stress, blood sample was taken from periorbital veins of all rats. Concentration of serum BDNF and total NO was assessed using ELISA. Data were analyzed using one way ANOVA. Results: Treatment groups had higher percentage in probe test water maze and serum BDNF concentration after chronic stress. Mean time percentage (%) of probe test in water maze performance for control group, CeA150, CeA300, and CeA600 were 53.33+2.43, 55.78+4.16, 63.33+4.07, and 73.55+3.29 (p<0.05). Mean concentration of serum BDNF (ng/ml) for control group, CeA150, CeA300, and CeA600 were 1.52+0.89, 1.49+0.20, 1.73+0.15, and 2.16+0.20 (p<0.05 vs control group). Control group had higher serum NO concentration compared to all treatments groups. Mean concentration of serum NO (µmol/L) for control group, CeA150, CeA300, and CeA600 were 5.94+0.52, 3.98+0.35, 3.06+0.33, and 2.82+0.21 (p<0.05). Conclusion: Ethanol extracts of Centella asiatica leaf increases memory performance and serum BDNF concentration, and also decreases Nitric Oxide levels in rats after chronic stress.

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Beberapa penelitian menunjukkan bahwa stres kronis meningkatkan produksi reactive oxygen species (ROS), dan /atau menekan mekanisme pertahanan antioksidan. Efek neuroprotektif dari Centella asiatica (L.). Urb telah dilaporkandapat melindungi neuron dari kerusakan oksidatif. Tujuan dari penelitian ini adalah untuk mengetahui efek ekstraketanol C. asiatica leaf terhadap ekspresi superoxide dismutase-2 sel (SOD- 2) pada sel Purkinje serebelum tikussetelah diberikan kejutan kronis di kaki. Sebanyak 25 tikus Sprague Dawley jantan dewasa muda diacak ke dalam limakelompok. Kelompok kontrol negatif terdiri dari tikus yang tidak stres; kelompok kontrol stres menerima aquadest; dankelompok lain diobati dengan dosis yang berbeda (mg / kg berat badan / hari, p.o.) ekstrak etanol daun C. asiatica: 150,300 dan 600, masing-masing diikuti oleh pemberian kejutan kronis di kaki selama dua puluh delapan hari. Ekspresi SOD-2 dari lapisan sel Purkinje diukur menggunakan metode imunohistokimia. Data dianalisis dengan one-way ANOVA (p<0,05). Kami menemukan bahwa ekspresi SOD-2 (%) dari lapisan sel Purkinje untuk kelompok kontrol negatif, kelompokkontrol stres, CeA150, CeA300 dan CeA600 kelompok adalah 22,38 ± 9,73, 9,81 ± 2,21, 10,29 ± 3,60, 14,72 ± 6,65, dan22,75 ± 10,93, masing-masing (p <0,05). Analisis post-hoc menunjukkan perbedaan yang signifikan antara kelompokkontrol negatif dan kelompok kontrol stres (p <0,05). Ada juga perbedaan yang signifikan antara kelompok kontrolstres dan kelompok CeA600 (p <0,05), tetapi tidak ada perbedaan yang signifikan antara kelompok perlakuan (p> 0,05).Penelitian ini menunjukkan bahwa ekstrak etanol daun C. asiatica meningkatkan ekspresi SOD-2 pada sel Purkinjecerebellar tikus setelah stres kronis.