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Effects of nigella sativa (Linn.) seeds extract treatment on the hippocampal MAP2 and GFAP mRNA expressions in the experimental neurodegeneration

Azzubaidi, Marwan Saad and Babar, Z.M. and Saxena, Anil Kumar and Talib, Norlelawati A. (2014) Effects of nigella sativa (Linn.) seeds extract treatment on the hippocampal MAP2 and GFAP mRNA expressions in the experimental neurodegeneration. International Journal os Stroke, 9 (Supp.1). p. 29. ISSN 1747-4949

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Abstract

Background: Experimental neurodegeneration can be induced by two vessel occlusion intervention (2VO). Nigella sativa (Linn.) seeds extract (NSSE) has recently shown to enhance memory and learning task performances in rats with 2VO. Prevention of neuroinflammation and/or of toxic free radical formation are possible mechanisms. The glial fibrillary acidic protein (GFAP) is a vital neuroinflammatory marker in neuroscience researches. GFAP was found to be up-regulated in 2VO rats indicating astrogliosis. Microtubule associated protein type II (MAP2) is an important marker for neuroprotection during and after ischemic brain injury or hypoxia. It was found to be down-regulated in 2VO rats. Aim: The current study aimed to compare the hippocampal MAP-2 and GFAP mRNA expressions of 2VO (untreated) male rats in the experimental neurodegeneration with other groups of healthy control and NSSE treated rats. Method: 18 adult male Sprague Dawley rats were randomly divided into 3 groups (n = 6); Healthy Control (HC); 2VO- without treatment (2VO); 2VO + NSSE-treated (NSSE). The NSSE group was pre-treated (2 ml/kg/day, orally) for 10 days prior to 2VO surgery and continued until all animals were sacrificed at the end of 10th postoperative week. Hippocampal samples were then collected; total RNA was extracted, purified and relatively quantified via reverse transcribed cDNAasperΔΔCq of RT-qPCR assay. Results: There was a significant 3 folds difference of GFAP mRNA expression in both HC and NSSE groups as compared to that of 2VO. However, GFAP mRNA expression difference was not significant (P = 0.52) of for NSSE vs. HC. Hippocampal MAP2 mRNA expression of NSSE group appeared to be insignificantly different from the untreated 2VO group. Conclusion: Prolonged treatment with NSSE has the potential to prevent hypoperfusion-induced neuroinflammation within the hippocampus. This may be a potential mechanism for neuroprotection against mild cerebral ischemic injuries. However, NSSE was unable to prevent loss of neuronal plasticity.

Item Type: Article (Journal)
Additional Information: 6809/38536
Uncontrolled Keywords: nigella sativa (Linn.) seeds
Subjects: Q Science > QP Physiology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
R Medicine > RM Therapeutics. Pharmacology > RM300 Drugs and their action
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Medicine > Department of Basic Medical
Kulliyyah of Pharmacy > Department of Basic Medical Sciences
Depositing User: Dr. Marwan Saad Azzubaidi
Date Deposited: 02 Oct 2014 16:31
Last Modified: 19 Jun 2018 14:13
URI: http://irep.iium.edu.my/id/eprint/38536

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