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syringaldehyde exerts neuroprotective effect on cerebral ischemia injury in rats through anti-oxidative and anti-apoptotic properties

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Neural Regeneration Research 2014年第21期9卷 1884-1890页

作者： Aras Adem Bozkurt Guven Mustafa Akman Tar?k Ozkan Adile Sen Halil Murat K?l?coglu Mesut Kalkan Y?ld?ray Silan Coskun Cosar Murat Department of Neurosurgery ?anakkale Onsekiz Mart UniversityCanakkaleTurkey Department of Neurology ?anakkale Onsekiz Mart UniversityCanakkaleTurkey Department of Medical Biochemistry Ondokuz May?s UniversitySamsunTurkey Deparment of Histology and Embryology Faculty of MedicineRecep Tayyip Erdo?an UniversityRizeTurkey Department of Pharmacology ?anakkale Onsekiz Mart UniversityCanakkaleTurkey

There are few studies on the neuroprotective effects of syringaldehyde in a rat model of cerebral ischemia. The study aimed to elucidate the mechanisms underlying the neuroprotective effects of syringaldehyde on ischemic brain cells. Rat models of cerebral ischemia were intraperitoneally administered syringaldehyde. At 6 and 24 hours after syringaldehyde administration, cell damage in the brain of cerebral ischemia rats was obviously reduced, superoxide dismutase activity and nuclear respiratory factor 1 expression in the brain tissue were markedly increased, malondi-adehyde level was obviously decreased, apoptosis-related cysteine peptidase caspase-3 and -9 immunoreactivity was obviously decreased, and neurological function was markedly improved. These ifndings suggest that syringaldehyde exerts neuroprotective effects on cerebral ischemia injury through anti-oxidation and anti-apoptosis.

关键词： nerve regeneration syringaldehyde brain ischemia neuroprotective effects inflammatory oxidative stress apoptosis neural regeneration

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“Cachacas”(Sugarcane Spirit)Aged Quantitation of Phenolic Compounds,Antibacterial and Antioxidant Activity

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American Journal of Plant Sciences 2014年第20期5卷 2935-3942页

作者： Leonardo Milani Avelar Rodrigues Maria das Gracas Cardoso Luís Roberto Batista Wilder Douglas Santiago Juliana Maria Valério Resende Juliana de Andrade Santiago Marcos de Souza Gomes Milene Aparecida Andrade Maria Luisa Teixeira Fabiana Reinis Franca Passamani Department of Food Science Federal University of LavrasLavrasBrazil Department of Chemistry Federal University of LavrasLavrasBrazil

The “cachaça” is currently one of the fastest growing agro-industrial industries in the country as the drink considered as a symbol of Brazilian nationality. This study aimed to quantify the phenolic compounds, evaluate the antioxidant and antibacterial activity of different samples of aged “cachaça”. The physic-chemical analysis was performed at the Brandy Quality Laboratory of the Federal University of Lavras, and the determination of phenolic compounds was performed by High Performance Liquid Chromatography (HPLC). The antimicrobial activity evaluation was held at the Food Mycology Laboratory through the cavity agar diffusion technique and by steam using the micro-organisms Escherichia coli, Staphylococcus aureus, Salmonella choleraesuis, Listeria monocytogenes and Pseudomonas aeruginosa. The antioxidant activity was evaluated using the DPPH radical sequestering method. The values obtained for the phenolic compounds ranged from 0.41 to 9.69 mg/L, observing the predominance of syringaldehyde, gallic acid and vanillic acid. The phenolic extracts showed a satisfactory antibacterial activity for both Gram-negative and Gram-positive but did not show inhibition against the bacteria Pseudomonas aeruginosa. The antioxidant activity was evidenced by the DPPH test for cachaças tested and the “cachaça” aged in oak barrel showed the highest activity, followed by “cachaça” aged in jequitibá, amburana and balm barrels.

关键词： syringaldehyde Gallic Acid Vanillic Acid Bacteria DPPH Test

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