معاضدی, احمد علی
استاد، گروه زیست شناسی، دانشکده علوم ، دانشگاه شهید چمران اهواز
[ 1 ] - اثر روی‌کلراید بر حافظه احترازی غیر فعال موش‌های صحرایی نر گنادکتومی شده در دوره قبل از بلوغ
Background & Aims: Previous research has shown that adult male rats’ castration reduces memory and learning. On the other hand, zinc chloride has a positive impact on memory and learning in some studies. Therefore, the aim of this study was to investigate effects of zinc chloride on passive avoidance memory of male rats, in gonadectomized peri-pubertaly. Materials & Methods: In this expe...
[ 2 ] - اثر روی‌کلراید بر رفتار‌های اضطرابی و افسردگی موش‌های صحرایی اواریکتومی شده در دوره قبل از بلوغ
در تحقیقات قبلی نشان داده شده که روی‌کلراید اثر ضد اضطرابی متفاوتی در موش‌های نر و ماده گنادکتومی شده بعد از بلوغ دارد. لذا این تحقیق به بررسی اثر روی‌کلراید بر اضطراب و افسردگی در موش‌های بالغ اواریکتومی شده قبل از بلوغ پرداخته است. در این آزمایش 50 سر موش ماده در روز 22-21 پس از تولد اواریکتومی شدند و در روز 75 پس از تولد، نیم ساعت قبل از تست اضطراب(دستگاه ماز بعلاوه مرتفع) و تست افسردگی(آزمو...
[ 3 ] - بررسی اثر عصاره هیدروالکلی گیاه اسطوخدوس (Lavandula officinalis) براعمال حرکتی در موش صحرایی نر مدل شبه بیماری پارکینسون
زمینه مطالعه: بیماری پارکینسون یک اختلال ناشی از تخریب عصبی است که در حدود 1% از جمعیت بالای 50 سال اثر می‌گذارد. به طور کلاسیک پارکینسون به عنوان یک بیماری مربوط به سیستم حرکتی در نظر گرفته می‌شود و تشخیص آن بر مبنای گروهی از علائم حرکتی نظیر سفتی عضلات، کندی حرکت و اختلال در رفلکس‌های حرکتی و وضعی بنا نهاده می‌شود. هدف: هدف از این مطالعه ارزیابی اثرات عصاره هیدروالکلی گیاه اسطوخدوس بر اختلالا...
[ 4 ] - Effect of zinc chloride on anxiety and its interaction with the androgenic system in adult male rats
Introduction: Previous studies have shown that zinc deficiency and castration could increase anxiety, while administration of zinc or testosterone has anxiolytic effects. This study examined the effect of zinc chloride administration on anxiety in gonadectomized male rats. Methods: For this purpose, adult male Wistar rats (weighing 200-250 g) were castrated. One month after surgery, differe...
[ 5 ] - Dual effect of dexamethasone administration on anxiety and depression in adult male rats
Introduction: Dexamethasone is a synthetic glucocorticoid with possible effects on anxiety and depression because it has direct effects on the hypothalamus-pituitary-adrenal (HPA) and interacts with several neurotransmitter systems such as GABA and glutamate. Methods: Levels of anxiety and depression in rats were measured 40 minutes and 24 hours, respectively, after subcutaneous injection o...
[ 6 ] - The effect of intrahippocampal microinjection of Naloxone on short –term and long-term memory in adult male rats
Introduction:The hippocampus is one for the major centers of learning and memory. Role of the opioid system has been investigated and on the other hand receptors related to this system such as mu-opioid receptors (MOR) are extended in the hippocampus. In this study the effect of Naloxone administration as a mu opioid receptor antagonist on passive avoidance memory in adult male rats was i...
[ 7 ] - Effect of sesame oil consumption on the passive avoidance memory of rat offspring during pregnancy
Introduction: Previous studies have shown that sesame oil affects memory and learning. In the present work, effect of a diet containing 10% sesame oil used during pregnancy was evaluated on short-term passive avoidance learning of offspring rats by Shuttle box. Methods: Female Wistar rats were divided into 2 groups (n = 9 each group). Control group consumed regular diet during pregnancy and...
[ 8 ] - The Effect of Estrogen on Passive Avoidence Memory in an Experimental Model of Alzheimer`s disease in Male Rats
Introduction: Estrogen is one of the gonadal hormones that has multiple beneficial actions in central nervous system and involves in learning and memory. Alzheimer's disease (AD) is a progressive neurodegenerative disorder that impairs patient memory. The human nucleus basalis of Meynert (nBM) is severely affected in Alzheimer's disease. So in this study the effect of peripheral (intramuscul...
[ 9 ] - Effects of different doses of zinc chloride on passive avoidance learning and memory in streptozotocin-induced diabetic adult male rats
Introduction: Zinc is an essential rare element that plays an important role in synaptic plasticity and modulation of the activity of central nervous system and is involved in learning and memory. Increasing zinc intake may protect against conditions associated with zinc deficiency, such as diabetes. Some studies have revealed that zinc deficiency in diabetic subjects is due to hogher excret...
[ 10 ] - The role of hippocampal (CA1) NMDA receptor on learning and memory in presence and absence of zinc chloride in adult male rats
Introduction: Zinc is an essential trace element that plays an important role in synaptic plasticity and modulating the activity of CNS and involve in learning and memory. Synaptic vesicle zinc in the hippocampus area exerting modulatory effects on NMDA glutamate receptor. Method: In this experiment the effects of NMDA agonist and antagonist administration intra hippocampus on passive avoidan...
[ 11 ] - The effect of zinc chloride on the passive avoidance memory of female rats ovariectomized in the pre-pubertal stage
Background: Many studies have shown that zinc has an important effect on learning, memory and cognition. On the other hand, ovariectomy in adult female rats reduces memory and learning. Also, regarding the contradictory reports on the effects of zinc chloride on memory and learning, this study aimed to examine the effect of zinc chloride on passive avoidance memory of ovariectomized female rats...
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