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Articles by Hamid Ejtehadi
Total Records ( 2 ) for Hamid Ejtehadi
  Mehrdad Lahouti , Samaneh Jamshidi , Hamid Ejtehadi , Mina Rowshani and Homa Mahmoodzadeh
  Ultrastructural studies of root cortical cells of Raphanus sativus L. seedlings experimentally exposed to 0-7 mg L1 Cr3+ revealed small electron dense granules especially in preplasmic zone. Root cortical cells of control seedlings grown in the absence of Cr3+ additions were void of any granules. X-ray microanalysis of the granules provided evidence that Cr was the predominant element while lower amounts of Fe, Zn and Mn were also measured in the granules. Presence of chromium deposit inclusions in the cells may be regarded as plant detoxifying mechanism to maintain relatively low cytoplasmic concentration of the element.
  Roohollah Ramezani , Ali Moghimi , Hassan Rakhshandeh , Hamid Ejtehadi and Masoumeh Kheirabadi
  We investigated the effect of Rosa damascena Mill, essential oil on the development of induced amygdala kindling seizures. Male Wistar rats were implanted with one tripolar and two monopolar electrodes in right basolateral amygdala and dura surface, respectively. The control group was injected solvent of essential oil and two experimental groups were injected 750 and 1000 mg kg-1 of essential oil (ip), 30 min before a daily kindling stimulation. The number of stimulations required for the first appearance of seizure stages was significantly larger in two experimental groups than in control group. Mean after discharge duration was significantly different and essential oil reduced the increase of after discharge duration. Mean after discharge amplitude was also shorter in the groups treated with essential oil than in control group. Duration time for 5th stage of seizure at fully-kindled rats was significantly shorter in two experimental groups than control group. These results suggest that Rosa damascena essential oil significantly retarded the development of seizure stages and possesses the ability to counteract kindling acquisition. The flavonoids of Rosa damascena may act via GABAA receptors as previous studies have proposed for flavonoids of other medicinal plants. More detailed studies are recommended to define the effective component(s) of Rosa on different types of epilepsy.
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