Sedigheh Siahkoohi; Mortez Anvari; Mahmood Akhavan Tafti; Mohammad Hosseini-sharifabad
Volume 9, Issue 2 , April 2014, , Pages 89-98
Abstract
Background and Objectives: Acrylamide is a monomer which is formed in foodstuffs containing carbohydrates altered to asparagine during thermal processing. Vitamin E is a component in human diet considered as the most effective lipid-soluble antioxidant found in the biological system. It prevents ...
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Background and Objectives: Acrylamide is a monomer which is formed in foodstuffs containing carbohydrates altered to asparagine during thermal processing. Vitamin E is a component in human diet considered as the most effective lipid-soluble antioxidant found in the biological system. It prevents initiation of oxidative tissue damage. The aim of this study was to investigate the potential role of vitamin E on hepatic biochemical and histological integrity in male mice fed with acrylamide. Materials and Methods: Twenty-eight adult male mice were randomly divided into four groups comprised of seven mice each. The first group served as control fed on ad-libitum diet; second group received 10 mg/kg/day acrylamide in drinking water; in third group, 100 mg/kg/day vitamin E was injected intraperitoneal, and fourth received a combination of acrylamide/vitamin E for 35 days. After cutting liver, liver injury was assessed by hematoxylin and eosin, and reticulin staining. Results: Following acrylamide consumption, the serum levels of liver enzymes significantly increased and light microscopy showed lymphocytes infiltration, inflammation of portal space and central vein, apoptosis, chromatolysis and fibrous expansion in some portal areas in acrylamide-treated mice. There was a statistically considerable difference between biochemical parameters, index apoptosis and histological features when the acrylamide plus vitamin E-treated group was compared with acrylamide-treated group. Conclusion: Acrylamide induced disturbance in hepatocytes activity and increased the serum levels of liver and structural changes in the liver. Administration of vitamin E significantly reduced the increased level of serum aminotransferase and the pathological changes, also effectively suppressed the acrylamide–induced liver injury.
Zahra Kiasalari; Mohsen Khalili; Mehrdad Roghani; Abbas Ahmadi; Monireh Mireie
Volume 9, Issue 2 , April 2014, , Pages 138-148
Abstract
Background and Objective: N-Methyl-D-aspartate (NMDA) antagonists such as piperidines are the most important antiepileptic drugs. Considering the fact that piperidine derivatives such as phencyclidine (PCP) and its new derivative, 1-[1-(3-methoxyphenyl) (tetralyl)] piperidine (PCP1), have different potencies, ...
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Background and Objective: N-Methyl-D-aspartate (NMDA) antagonists such as piperidines are the most important antiepileptic drugs. Considering the fact that piperidine derivatives such as phencyclidine (PCP) and its new derivative, 1-[1-(3-methoxyphenyl) (tetralyl)] piperidine (PCP1), have different potencies, the antiepileptic effects of mentioned drugs were investigated in the present study.
Methods: Fifty male mice weighing 25-30 g were randomly selected and divided into five experimental groups: 1- Control 2- Pentylentetrazole-kindled mice, 3- Positive control group which received valproate, and groups 4 and 5, which received PCP and PCP1, respectively. Kindling was down by 11 periods injection of PTZ every second day for 22 days. At the 12th injection, all kindled group were tested for PTZ challenge dose. The exhibited phases of seizure (0-6) were observed and noted till 30 minutes after PTZ injection. Finally, the malondialdehyde, superoxide dismutase and nitric oxide levels of the animal’s brain tissues were determined and compared with others.
Results: PCP1 could have a prominent anti-convulsion effect compared to PCP, especially in the reduction of phase 2 duration time and seizure score in challenge dose. Our additional experiments showed that there was a significant reduction in NO level in PCP1 treated animals.
Conclusion: Administration of the new piperidine derivate, PCP1 could have yielded a prominent anti-convulsion effect in grand epilepsy. Regarding to the changes in conformation of PCP1 as a non-competitive antagonist of NMDA receptor, it may block the NMDA receptors potentially more effectively than phencyclidine.
