Neuroprotective effects of sea buckthorn leaf extract against hypobaric hypoxia and post-hypoxic reoxygenation induced hippocampal damage in rats.

作者: Govindasamy Ilavazhagan , Satya Narayan Deep , Iswar Baitharu

DOI:

关键词: Hypoxia (medical)GCLCOxidative stressBiochemistryBiologyOxidative phosphorylationHippocampal formationPharmacologyDownregulation and upregulationGlutathioneNeuroprotection

摘要: Exposure to hypobaric hypoxia (HBH) and reoxygenation (H/R) causes hippocampal neuronal damage leading memory dysfunction mood state alteration. The present study aimed at investigating the potential neuroprotective effect of seabuckthorn leaf extract ((SBTLE)) against HBH induced injury in brain. Six groups male sprague dawley rats were taken exposed simulated equivalent an altitude 7600m animal decompression chamber for 7 days followed by reoxygenation. Rats supplemented with SBTLE (100mg/kgBW) 20 prior during hypoxic exposure. Recovery from injuries following exposure subsequent was carried out separate group animals. Our revealed that stress enhanced oxidative neurons which reversed supplementation. restored Hypoxia/Reoxygenation(H/R) downregulation  γ-glutamylcysteine synthetase (GCLC) enzymes responsible glutathione biosynthesis. Post supplementation decreased markers, however, administration conjunction inhibitor GCLC resulted slow recovery H/R injuries. These results provide first evidence   induced increase biosynthesis upregulating enzyme expression hence can be used as a promising drug cure damages.

参考文章(31)
Lu Rongsen, Seabuckthorn: a multipurpose plant species for fragile mountains Kathmandu (Nepal) ICIMOD. ,(1992)
Y Zhang, O Marcillat, C Giulivi, L Ernster, K J Davies, The oxidative inactivation of mitochondrial electron transport chain components and ATPase. Journal of Biological Chemistry. ,vol. 265, pp. 16330- 16336 ,(1990) , 10.1016/S0021-9258(17)46227-2
B. R. Shivakumar, Vijayalakshmi Ravindranath, S. V. R. Kolluri, Glutathione and protein thiol homeostasis in brain during reperfusion after cerebral ischemia. Journal of Pharmacology and Experimental Therapeutics. ,vol. 274, pp. 1167- 1173 ,(1995)
K Nakanishi, F Tajima, A Nakamura, S Yagura, T Ookawara, H Yamashita, K Suzuki, N Taniguchi, H Ohno, EFFECTS OF HYPOBARIC HYPOXIA ON ANTIOXIDANT ENZYMES IN RATS The Journal of Physiology. ,vol. 489, pp. 869- 876 ,(1995) , 10.1113/JPHYSIOL.1995.SP021099
Carl P. LeBel, Syed F. Ali, Monique McKee, Stephen C. Bondy, Organometal-induced increases in oxygen reactive species: The potential of 2′,7′-dichlorofluorescin diacetate as an index of neurotoxic damage Toxicology and Applied Pharmacology. ,vol. 104, pp. 17- 24 ,(1990) , 10.1016/0041-008X(90)90278-3
Barbara Shukitt-Hale, Louis E. Banderet, Harris R. Lieberman, Elevation-dependent symptom, mood, and performance changes produced by exposure to hypobaric hypoxia. The International Journal of Aviation Psychology. ,vol. 8, pp. 319- 334 ,(1998) , 10.1207/S15327108IJAP0804_1
Iswar Baitharu, Satya Narayan Deep, Vishal Jain, Dipti Prasad, G. Ilavazhagan, Inhibition of glucocorticoid receptors ameliorates hypobaric hypoxia induced memory impairment in rat. Behavioural Brain Research. ,vol. 240, pp. 76- 86 ,(2013) , 10.1016/J.BBR.2012.11.005
Ralf Baumgartner, Urs Eichenberger, Peter Bärtsch, Postural ataxia at high altitude is not related to mild to moderate acute mountain sickness. European Journal of Applied Physiology. ,vol. 86, pp. 322- 326 ,(2002) , 10.1007/S00421-001-0534-8
Sunil K. Hota, Kalpana Barhwal, Koushik Ray, Shashi B. Singh, G. Ilavazhagan, Ceftriaxone rescues hippocampal neurons from excitotoxicity and enhances memory retrieval in chronic hypobaric hypoxia Neurobiology of Learning and Memory. ,vol. 89, pp. 522- 532 ,(2008) , 10.1016/J.NLM.2008.01.003
Sangu Muthuraju, Panchanan Maiti, Preeti Solanki, Alpesh Kumar Sharma, Shashi Bala Singh, Dipti Prasad, Govindasamy Ilavazhagan, None, Cholinesterase inhibitors ameliorate spatial learning deficits in rats following hypobaric hypoxia Experimental Brain Research. ,vol. 203, pp. 583- 592 ,(2010) , 10.1007/S00221-010-2266-7