علی اکبر ملکی راد
استادیار گروه زیست‌شناسی، دانشکدة علوم پایه، دانشگاه پیام نور، تهران، ایران
[ 1 ] - اثر محافظتی عصارة هیدروالکلی پسته بر میزان آنزیم‌های کبدی متعاقب القای مسمومیت کبدی در موش صحرایی
اهداف: علل برخی بیماری‌های کبدی ناشناخته است، ولی بی‌شک عوامل اکسیدکننده نقش مهمی در ایجاد تغییرات پاتولوژیکی کبد دارد. پسته با نام علمی Pistacia Vera دارای ترکیباتی با خواص آنتی‌اکسیدانی مثل کوآنزیم 10، ویتامین E و بتاکاروتن است. پژوهش حاضر، با هدف بررسی اثر عصارة هیدروالکلی پسته بر میزان آنزیم‌های کبدی متعاقب القای مسمومیت کبدی طراحی شده است. مواد و روش‌ها: این مطالعة تجربی، با تعداد 40 سرم...
[ 2 ] - Ginger extract modulates the expression of IL-12 and TGF-β in the central nervous system and serum of mice with experimental autoimmune encephalomyelitis
Objective: The main function of IL-12 is differentiation of naive T cells intoTh1 cells and TGF-β is a powerful immunoregulatory cytokine. The immunomodulatory and anti-inflammatory properties of ginger have also been reported in some studies. The aim of this study was to evaluate the effects of ginger extract on the expression of IL-12 and TGF-β in a model of experimental autoimmune encephalom...
[ 3 ] - The effect of Zataria multiflora Boiss hydroalcoholic extract and fractions in pentylenetetrazole-induced kindling in mice
Objective: At present, there are many antiepileptic drugs with a wide range of side effects on the human body. It was assumed that Zataria multiflora Boiss (Z. multiflora) with sedative, anti-spasmodic and anti-inflammatory activity may be effective in the treatment of epilepsy. The aim of the present study was to elucidate the effect of Z. multiflora hydroalcoholic extract and its fraction ext...
[ 4 ] - CX691 as an AMPA receptor positive modulator, improves the learning and memory in a rat model of Alzheimer’s disease
Objective(s): Growing evidence suggests that dysfunction of the glutamatergic system and α-amino-3-hydroxy-5-methyl-4-isoazolepropionic acid (AMPA) receptors are involved in pathology of Alzheimer’s disease (AD). Because AMPA receptors play a key role in plasticity synaptic regulation, positive modulation of these receptors may rescue the cognitive deficits in the AD. The aim of this study was ...
[ 5 ] - Protective effect of metformin on D-galactose-induced aging model in mice
Objective(s): Metformin (Met), an antidiabetic biguanide, reduces hyperglycemia via improving glucose utilization and reducing the gluconeogenesis. Met has been shown to exert neuroprotective, antioxidant and anti-inflammatory properties. The present study investigated the possible effect of Met on the D-galactose (D-gal)-induced aging in mice. Materials and Methods: Met (1 and 10 mg/kg/p.o.), ...
[ 6 ] - TRPV1 receptor-mediated expression of Toll-like receptors 2 and 4 following permanent middle cerebral artery occlusion in rats
Objective(s): Stroke is known as a main cause of mortality and prolonged disability in adults. Both transient receptor potential V1 (TRPV1) channels and toll-like receptors (TLRs) are involved in mediating the inflammatory responses. In the present study, the effects of TRPV1 receptor activation and blockade on stroke outcome and gene expression of TLR2 and TLR4 were assessed following permanen...
[ 7 ] - Bio-effectiveness of the main flavonoids of Achillea millefolium in the pathophysiology of neurodegenerative disorders- a review
The Achillea millefolium L. (Yarrow) is a common herb which is widely being used, worldwide. Achillea is being used for treatment of many disorders since centuries. It is considered safe for supplemental use and flavonoids such as kaempferol, luteolin and apigenin are of main constituents present in Achillea. Most of both antioxidant and anti-inflammatory properties of this herb have been attri...
[ 8 ] - Administration of orexin receptor 1 antagonist into the rostral ventromedial medulla increased swim stress-induced antinociception in rat
Objective(s): Intracerebroventricular injection of orexin-A (hypocretin-1) antagonist has been shown to inhibit stress-induced analgesia. However the locations of central sites that may mediate these effects have not been totally demonstrated. This study was performed to investigate the role of rostral ventromedial medulla (RVM) orexin receptor 1 in stress-induced analgesia (SIA). Materials and...
[ 9 ] - Permanent lesion in rostral ventromedial medulla potentiates swim stress-induced analgesia in formalin test
Objective(s): There are many reports about the role of rostral ventromedial medulla (RVM) in modulating stress-induced analgesia (SIA). In the previous study we demonstrated that temporal inactivation of RVM by lidocaine potentiated stress-induced analgesia. In this study, we investigated the effect of permanent lesion of the RVM on SIA by using formalin test as a model of acute inflammatory pa...
[ 10 ] - Endocannabinoid System and TRPV1 Receptors in the Dorsal Hippocampus of the Rats Modulate Anxiety-like Behaviors
Objective(s) Fatty acid is amide hydrolase which reduce endogenous anandamide. Transient receptor potential vanilloid-1 (TRPV1) channels have been reported to have a role in the modulation of anxiety-like behaviors in rodents. In the present study, the effects of either endocannabinoid system or TRPV1 channels and their possible interaction on anxiety-like behaviors of the rats were explored. ...
[ 11 ] - Effect of Morphine Withdrawal Syndrome on Cerebral Ischemia Outcome in Rats
Objective(s) Opioid abuse is still remained a major mental health problem, a criminal legal issue and may cause ischemic brain changes including stroke and brain edema. In the present study, we investigated whether spontaneously withdrawal syndrome might affect stroke outcomes. Materials and Methods Addiction was induced by progressive incremental doses of morphine over 7 days. Behavioral si...
[ 12 ] - Evaluation of Relation between IL-4 and IFN-y Polymorphisms and Type 2 Diabetes
Objective(s) Although, type 2 diabetes is the most frequent type of diabetes, its main cause is yet to be clarified. Several environmental and genetic parameters are believed to be involved in diabetes. It has also been established that cytokines play key roles in pathogenesis of diabetes. Expression of cytokines is different from person to person and in different societies. Several studies sh...
[ 13 ] - اثر متفورمین بر یادگیری لمسی و رفتار شبه اضطرابی در موش سوری اوارکتومی شده
Introduction: Estrogen regulates many processes in the brain such as synaptic formation, learning, and memory. Empirical evidence shows that there is a correlation among menopause, memory impairment, and anxiety due to Estrogen deficiency. In this study, we tested the effect of Metformin (Met) with antioxidant effect, which can improve the impairment of tactile learning and anxiety-like behavio...
[ 14 ] - بررسی اثر عصاره گیاه بومادران بر پیامد‌های ناشی از سکته مغزی در موش‌های صحرایی ماده بعد از برداشتن تخمدان‌ها
Introduction: Previous studies indicated estrogen as a protective factor in brain cells. In this study, effect of Yarrow extract (Achillea millefolium), containing a phytoestrogen, were examined on the consequences of stroke in the middle cerebral artery occlusion model in ovariectomized female rats. Methods: In the present study, 32 female Wistar rats weighing 200 to 250 g were randomly divi...
[ 15 ] - تفاوت شدت علایم سندرم قطع در بعضی از روش های ایجاد وابستگی به مرفین
Background and purpose: In the present study, we compared the intensity of physical dependency, mortality rate and weight changes in some common methods for inducing morphine dependency. Materials and methods: Six common different methods for morphine dependency were chosen in wistar rats. In all methods, morphine dependency was induced by repeated morphine injection. Precipitation of morp...
[ 16 ] - بررسی اثر تزریق تک‌دوز مرفین بر شاخص‌های خستگی عضلانی در موش‌های صحرایی نر
Background and Aim: Endogenous opioids and addictive opiate drugs change many body functions. . Previous studies have referred to the effects of morphine on smooth and pulmonary muscles ., but the effects of opioids on skeletal muscles is not known well. Thus, the current study aimed at assessing the effect of a single dose of morphine on muscle fatigue in male rats. Materials and Meth...
[ 17 ] - Effects of Dimethyl Sulfoxide on Neuronal Response Characteristics in Deep Layers of Rat Barrel Cortex
Introduction: Dimethyl sulfoxide (DMSO) is a chemical often used as a solvent for waterinsoluble drugs. In this study, we evaluated the effect of intracerebroventricular (ICV) administration of DMSO on neural response characteristics (in 1200–1500 μm depth) of the rat barrel cortex. Methods: DMSO solution was prepared in 10% v/v concentration and injected into the later...
[ 18 ] - Vitex Agnus Castus Extract Improves Learning and Memory and Increases the Transcription of Estrogen Receptor α in Hippocampus of Ovariectomized Rats
Introduction: Lower level of estrogen hormone is considered as an important factor for loss of learning and memory in postmenopausal women. Although estrogen replacement therapy is used for compensation, but long-term usage of estrogen is associated with a higher risk of hormonedependent cancers. Phytoestrogens, due to fewer side effects, have been proposed to prevent menopause-related co...
[ 19 ] - Effect of the hydroalcoholic extract of pistachio on avoidance learning in male Wistar rats
Background: Pistachio is a plant that has long been cultivated in different parts of Iran. Pistachios are very nutritious and contain vitamins E and B, flavonoids, antioxidants, and carotenoids. Since the pistachio is effective in the treatment of some neurological disorders and is indigenous to Iran and considering the substantial use of this nut, it is necessary to investigate its effects on ...
[ 20 ] - Occupational Exposure to pesticides and spontaneous abortion among female pistachio farmers: a case-control study
Introduction: The majoritiy of abortion risk factors has been classified as environmental and vary from one place to another. This study aimed to explore the relationship between exposure to pesticides and spontaneous abortion among female pistachio farmers in Rafsanjan, Iran. Materials and Methods: In this case-control study, 50 women with spontaneous abortion and 50 women w...
[ 21 ] - Investigate the effect of TRPV1 receptor antagonist (AMG9810) on stroke outcome in the permanent middle cerebral artery occlusion in male rat
Introduction: TRPV1 is a non-selective cation channel with high permeability to calcium ions, and is also involved in the development of neurogenic and inflammatory pain. The increase in intracellular calcium plays a role in worsening of stroke. In the present study we investigated the effect of (AMG9810) TRPV1 receptor antagonist on stroke outcome in the permanent middle cerebral artery occlus...
[ 22 ] - Effect of transient inactivation of rostral ventromedial medulla on swim stress induced analgesia in formalin test in rats
Introduction: Despite significant progress in understanding pain control mechanism, there are numerous questions about central nervous mechanisms underlying stress-induced analgesia. The rostral ventromedial medulla (RVM) in the brainstem integrates a variety of functions, including pain modulation and pain perception. In the present study, we investigated the effect of temporary inactivatio...
[ 23 ] - Morphine Reduces Expression of TRPV1 Receptors in the Amygdala but not in the Hippocampus of Male Rats
Background: Chronic use of opioids usually results in physical dependence. The underlying mechanisms for this dependence are still being evaluated. Transient receptor potential vanilloid type 1 (TRPV1) are important receptors of pain perception. Their role during opioid dependence has not been studied well. The aim of this study was to evaluate the effect of morphine-dependence on the expressio...
[ 24 ] - The role of locus coeruleus nucleus TRPV1 receptors in the development and expression of morphine dependence
Objective(s): This study investigated the role of locus coeruleus (LC) nucleus TRPV1 receptors (TRPV1r) in the expression and development of morphine physical dependence by intra-LC administration of AMG9810 (selective TRPV1r antagonist) in male Wistar rats. Materials and Methods: For assessing the development of morphine dependence, AMG9810 (0.0...
[ 25 ] - Sumatriptan ameliorates renal injury induced by cisplatin in mice
Objective(s): Cisplatin (Cis) is an anticancer compound, which is used for the treatment of various cancers. Sumatriptan (Suma) is a selective agonist of 5-hydroxytryptamine 1B/1D (5HT1B/1D) receptor, which is prescribed for the management of migraine. It is well-established that Suma has anti-inflammatory and antioxidant properties. We have explored the protective effe...
[ 26 ] - Ceftriaxone improves senile neurocognition damages induced by D-galactose in mice
Objective(s): Ceftriaxone (Cef), a beta-lactam antibiotic, is accompanied by antioxidant and anti-inflammatory properties. It has been shown that Cef has beneficial effects on Alzheimer’s disease. In the current investigation, the effect of Cef in a mice model of aging was investigated. Materials and Methods: Forty male mice were equally...
[ 27 ] - Modulatory Effects of Memantine on Neuronal Response Properties in Rat Barrel Cortex
Introduction: Memantine as N-Methyl-D-aspartic acid (NMDA) receptor antagonist is used in some neurological disorders. It has been reported that memantine has modulatory effects on the somatosensory information processing in healthy subjects. This study investigated the effect of memantine on electrophysiological properties of barrel cortex neurons in male rats. Methods: Single unit recording ...