The Effect of Jujube Leaf Extract in Preventing Memory Scores Deficit in White Wistar Rat Hypertension Model

Abstract

Memory impairment is one of the effects caused by hypertension. Jujube leaves (Ziziphus mauritiana Lam) have active ingredients which are believed to control hypertension and, therefore, prevent memory deficit, especially spatial memory in white rats. The aim of the study was to determine the effect of jujube leaves extract (Ziziphus mauritiana Lam) on the memory score of white rats with hypertension induced by NaCl and Prednisone. The study was a true experimental with a post-test-only control group design. Rats were divided into five groups consisting of two control groups and three groups with jujube leaves extract: 200mg/KgBW/day, 400mg/KgBW/Day, and 800mg/KgBW/Day. Memory functions were measured by Radial Arm Maze to measure spatial memory function. Data were analyzed with One-Way ANOVA and then Post-hoc Bonferroni. All groups were found to be significant (p = 0.00) in One-Way ANOVA test. In a Post hoc test, only group 3 with a dose of 800mg/KgBW/day was found to be significant (p = 0.00) to prevent memory score deficit in white hypertensive Wistar rats induced by NaCl and Prednisone. Jujube leaves extract (Ziziphus mauritiana Lam) can prevent memory score deficit in white Wistar rats with hypertension.


Keywords: hypertension, memory function, jujube leaves

References
[1] Obisesan TO. Hypertension and cognitive function. Clin Geriatr Med. 2009 May;25(2):259–88.

[2] Ghavipanjeh GR, Alaei H, Khazaei M, Pourshanazari AA, Hoveida R. Effect of acute and chronic hypertension on short- and long-term spatial and avoidance memory in male rats. Pathophysiology. 2010 Feb;17(1):39–44.

[3] Golmohammadi F. Medicinal plant of Jujube (ziziphus jujuba) and its indigenous knowledge and economic importance in desert regions in east of Iran : situation and problems. Technical Journal of Engineering and Applied Sciences. 2013; 3 (6):493- 505.

[4] Elias MF, Elias PK, Sullivan LM, Wolf PA, D’Agostino RB. Lower cognitive function in the presence of obesity and hypertension: the Framingham heart study. Int J Obes. 2003 Feb;27(2):260–8.

[5] Faraco G, Park L, Zhou P, Luo W, Paul SM, Anrather J, et al. Hypertension enhances Aβ-induced neurovascular dysfunction, promotes β-secretase activity, and leads to amyloidogenic processing of APP. J Cereb Blood Flow Metab. 2016 Jan;36(1):241–52.

[6] Palumbo ML, Fosser NS, Rios H, Zorrilla Zubilete MA, Guelman LR, Cremaschi GA, et al. Loss of hippocampal neuronal nitric oxide synthase contributes to the stressrelated deficit in learning and memory. J Neurochem. 2007 Jul;102(1):261–74.

[7] Maltsev AV, Bystryak S, Galzitskaya OV. The role of β-amyloid peptide in neurodegenerative diseases. Ageing Res Rev. 2011 Sep;10(4):440–52.

[8] Kusriani R, Nawawi A, Machter E. Penetapan kadar senyawa fenolat total dan aktivitas antioksidan ekstrak daun, buah dan biji bidara (Ziziphus spina-christi l.). Psosiding SNapp2015 Kesehat., 2015;311–318.

[9] Jabeen Q, Aslam N. Hypotensive, angiotensin converting enzyme (ACE) inhibitory and diuretic activities of the aqueous-methanol extract of Ipomoea reniformis. Iran J Pharm Res. 2013;12(4):769–76.

[10] Dahiru D, Obidoa O. Evaluation of the antioxidant effects of Ziziphus mauritiana Lam. Leaf extracts against chronic ethanol-induced hepatotoxicity in rat liver. Afr J Tradit Complement Altern Med. 2007 Oct;5(1):39–45.

[11] Richter SH, Zeuch B, Lankisch K, Gass P, Durstewitz D, Vollmayr B. Where have I been? Where should I go? Spatial working memory on a radial arm maze in a rat model of depression. PLoS One. 2013 Apr;8(4):e62458.

[12] Schimidt HL, Vieira A, Altermann C, Martins A, Sosa P, Santos FW, et al. Memory deficits and oxidative stress in cerebral ischemia-reperfusion: neuroprotective role of physical exercise and green tea supplementation. Neurobiol Learn Mem. 2014 Oct;114:242–50.

[13] Bimonte-Nelson HA. The maze book: Theories, practice, and protocols for testing rodent cognition, 2015;94. https://doi.org/10.1007/978-1-4939-2159-1.

[14] Kumar V, Khan AA, Tripathi A, Dixit PK, Bajaj UK. Role of oxidative stress in various diseases: relevance of dietary antioxidants. J. Phytopharm. 2015;4(2):126–32.

[15] Ogura Y, Parsons WH, Kamat SS, Cravatt BF. 乳鼠心肌提取 HHS Public Access. Physiol Behav. 2017;176(10):139–48.

[16] Mahajan RT, Chopda MZ, Mill Z. PHCOG REV.: Review Article Phyto-Pharmacology of Ziziphus jujuba Mill – A Plant Review Distribution of Species,6:320–329, 2009.

[17] Peters R, Schuchman M, Peters J, Carlson MC, Yasar S. Relationship Between Antihypertensive Medications and Cognitive Impairment: Part II. Review of Physiology and Animal Studies. Curr Hypertens Rep. 2016 Aug;18(8):66.

[18] Chen M, Long Z, Wang Y, Liu J, Pian H, Wang L, et al. Protective effects of saponin on a hypertension target organ in spontaneously hypertensive rats. Exp Ther Med. 2013 Feb;5(2):429–32.