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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Hippocampus,Treadmill Training,Female rats,Mir-1b,Sleep deprivation
- چکیده:
- چکیده انگلیسی: Objective(s): The protective effect of regular running on sleep deprivation (SD)-induced cognitive impairment has been revealed. In this study, we focused on the effects of regular exercise, sleep deprivation and both of them together on the microRNA-1b (miR-1b) expression and their relation to the behavioral parameters and brain-derived neurotrophic factor (BDNF) expression.
Materials and Methods: We used ovariectomized (OVX) female rats. The exercise program was mild-moderate treadmill training for 4 weeks. 72 hr SD was achieved using the multiple platform method and the spatial learning and memory parameters have been evaluated by the Morris water maze (MWM) test. The levels of studied genes were quantified by real-time PCR.
Results: SD down-regulated pri-miR-1b, miR-1b (P˂0.05), and BDNF mRNA (P˂0.01) in the hippocampus. Furthermore, female rats under exercise conditions showed significant up-regulation of the miR-1b and BDNF mRNA (P˂0.001). In addition, miR-1b positively correlated with cognitive function (P˂0.05) and BDNF mRNA (P˂0.01).
Conclusion: Our data demonstrated that regular treadmill exercise could reverse the down-regulation of hippocampal miR-1b, which has a probable role in the SD-induced cognitive impairment.- انتشار مقاله: 06-03-1397
- نویسندگان: Lily Mohammadipoor-ghasemabad,Mohammad Hossein Sangtarash,Saeed Esmaeili-Mahani,Vahid Sheibani,Hosein Ali Sasan
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Hippocampus,Treadmill Training,Female rats,Mir-1b,Sleep deprivation
- چکیده:
- چکیده انگلیسی: Objective(s): The protective effect of regular running on sleep deprivation (SD)-induced cognitive impairment has been revealed. In this study, we focused on the effects of regular exercise, sleep deprivation and both of them together on the microRNA-1b (miR-1b) expression and their relation to the behavioral parameters and brain-derived neurotrophic factor (BDNF) expression.
Materials and Methods: We used ovariectomized (OVX) female rats. The exercise program was mild-moderate treadmill training for 4 weeks. 72 hr SD was achieved using the multiple platform method and the spatial learning and memory parameters have been evaluated by the Morris water maze (MWM) test. The levels of studied genes were quantified by real-time PCR.
Results: SD down-regulated pri-miR-1b, miR-1b (P˂0.05), and BDNF mRNA (P˂0.01) in the hippocampus. Furthermore, female rats under exercise conditions showed significant up-regulation of the miR-1b and BDNF mRNA (P˂0.001). In addition, miR-1b positively correlated with cognitive function (P˂0.05) and BDNF mRNA (P˂0.01).
Conclusion: Our data demonstrated that regular treadmill exercise could reverse the down-regulation of hippocampal miR-1b, which has a probable role in the SD-induced cognitive impairment.- انتشار مقاله: 06-03-1397
- نویسندگان: Lily Mohammadipoor-ghasemabad,Mohammad Hossein Sangtarash,Saeed Esmaeili-Mahani,Vahid Sheibani,Hosein Ali Sasan
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Neuropathic pain,Hyperalgesia,Allodynia,Neurotrophins,Spinal nerve ligation
- چکیده:
- چکیده انگلیسی: Objective(s): Neurotrophins (NTs) exert various effects on neuronal system. Growing evidence indicates that NTs are involved in the pathophysiology of neuropathic pain. However, the exact role of these proteins in modulating nociceptive signaling requires being defined. Thus, the aim of this study was to evaluate the effects of spinal nerve ligation (SNL) on NTs activation in the lumbar dorsal root.
Materials and Methods: Ten male Wistar rats were randomly assigned to two groups: tight ligation of the L5 spinal nerve (SNL: n=5) and Sham (n=5). In order to produce neuropathic pain, the L5 spinal nerve was tightly ligated (SNL). Then, allodynia and hyperalgesia tests were conducted weekly. After 4 weeks, tissue samples were taken from the two groups for laboratory evaluations. Here, Real-Time PCR quantity method was used for measuring NTs gene expression levels.
Results: SNL resulted in a significant weight loss in the soleus muscle (P<0.05), mechanical allodynia and thermal hyperalgesia thresholds (respectively, P<0.05; P<0.05). Also, NGF, NT-4, NT-3, TrkA, TrkB and TrkC expression were up-regulated following spinal nerve ligation group (respectively, P=0.025, P=0.013, P=0.001, P=0.002, P<0.001, P=001) (respectively, 4.7, 5.2, 7.5, 5.1, 7.2, 6.2 folds).
Conclusion: The present study provides new evidence that neuropathic pain induced by spinal nerve ligation probably activates NTs and Trk receptors expression in DRG. However, further studies are needed to better elucidate the role of NTs in a neuropathic pain.- انتشار مقاله: 11-10-1395
- نویسندگان: Abdolreza Kazemi,Masoud Rahmati,Rasoul Eslami,Vahid Sheibani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Opium,Morphine,Learning,Morris Water Maze,Co-administration,Nicotine dependency
- چکیده:
- چکیده انگلیسی: Objective(s): Smoking opium/cigarette is a global health concern. The aim of this study was to examine learning and memory of rat male offsprings whose mothers had been exposed to either opium or morphine with nicotine during pregnancy. Materials and Methods: Wistar rats were used for the experiments. In the female rats, opium, morphine and nicotine dependencies were induced by daily injections of drug solution for 10 days before mating. Spatial memory was tested by Morris water maze test in male pups at the postnatal day 60. The duration that took until the rats found the platform in the maze and also their swimming speed were recorded. Results: An increase in the platform finding duration was observed for the pups of dependent mothers in comparison with the control in the training trial (P<0.05). Prenatal exposure to opium/morphine and nicotine significantly decreased the time spent in the trigger zone to find the hidden platform (P<0.05) but had no significant effect on the swimming speed in the probe test. However, no significant difference was observed in the learning and memory behavior of offspring whose mothers received morphine, opium, nicotine or the co-administration of either morphine or opium with nicotine. Conclusion: The present study showed that the opium, morphine and nicotine abuse and co-administration of opium/morphine with nicotine during pregnancy may cause deficits in spatial learning of male rat offspring. Based on our data, no synergistic effects of co-drug administration were observed on learning and memory in male rat offspring.
- انتشار مقاله: 02-07-1393
- نویسندگان: Gholamreza Sepehri,Shahrnaz Parsania,Mousa‐Al‐Reza Hajzadeh,Tahereh Haghpanah,Vahid Sheibani,Kouros Divsalar,Shahnaz Shekarforoush,Mohammad Reza Afarinesh
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Medicinal plant,Spatial learning,Origanum vulgare,Antioxidant assay,Long term potentiation,T-maze
- چکیده:
- چکیده انگلیسی: Objective(s)
The objective of this study was to determine the effect of aqueous extract of Origanum vulgare L. ssp. Viridis (ORG) on discrimination learning and long term potentiation (LTP) in CA1 region of the rat hippocampus.
Materials and Methods
A group of adult male Wistar rats weighing 275±25 g received aqueous extract of ORG (150, 300, 450 mg/kg/day) by intraperitoneal injection for one week, and the other group received saline (n= 6). A wooden T-maze was used to evaluate the discrimination learning. In electrophysiological experiments, the effect of ORG leaves extract on induction and maintenance of long term potentiation (LTP) in CA1 hippocampus area was determined. LTP was evaluated in CA1 region after high-frequency stimulation (200 Hz) of the Schaffer collaterals. Also, serum antioxidant levels were analyzed in the two groups (n= 4).
Results
Statistical analysis showed significant decreases in the number of total (significantly at the dose of 300 and 450 mg/kg) and wrong (significantly at the dose of 300 mg/kg) entrance into opposite box of T-maze procedure in ORG-treated animals (P< 0.05). In electrophysiological study, the rats which had received ORG (150, 300, and 450 mg/kg) showed an increase in both population spike amplitude (59.7±14.1%, 85±14.7% and 49.3±8.7% respectively, compared to 39±9.2% increase in saline group) and maintenance of LTP in hippocampus CA1 after high frequency stimulation in Schaffer collateral pathway. In serum antioxidant assay, level of antioxidants in ORG groups (300 and 450 mg/kg) remarkably increased in comparison to saline group (P< 0.05 and P< 0.001, in turn).
Conclusion
Our results suggest that Origanum aqueous extract can improve the learning criteria in rats.- انتشار مقاله: 30-06-1394
- نویسندگان: Vahid Sheibani,Mohammadreza Afarinesh,Zahra Hajializadeh,Mehdi Abbasnejad,Tahereh Haghpanah,Razieh Arabnezhad,Gholamreza Sepehri
- مشاهده
- جایگاه : پژوهشی
- مجله: Avicenna Journal of Phytomedicine
- نوع مقاله: Journal Article
- کلمات کلیدی: Walnut,Rat,Memory,Learning,Morris Water Maze
- چکیده:
- چکیده انگلیسی: Objective: Walnut (Juglans Regia) is a domestic fruit of Iran. Walnut kernel (WK) has many beneficial constituents such as unsaturated fatty acids, antioxidants, and vitamin E. Scientific studies have shown that fatty acids and vitamin E can modulate learning and memory processes. The aim of the present work was to study effects of walnut consumption by mothers during pregnancy and lactation on learning and memory in adult rat offsprings.
Materials and Methods: The animals were divided into three groups: control (fed with ordinary food, 20 g daily), gestation (fed with WK, 6% of food intake during pregnancy), and gestation and lactation (fed with WK, 6% of food intake during gestation and lactation). Morris water maze test was performed for their adult offsprings.
Results: The results showed that there was a significant difference in learning and memory of rat offsprings between experimental and control groups.
Conclusion: These data may indicate that feeding mothers with WK results in improvement in learning and memory of their offsprings.- انتشار مقاله: 23-11-1391
- نویسندگان: Majid Asadi-Shekaari,Abuzar Karimi,Mohammad Shabani,Vahid Sheibani,Khadije Esmaeilpour
- مشاهده
- جایگاه : پژوهشی
- مجله: Addiction and Health
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: Abstract Background: Psychedelic drugs can cause one to get out of normal status and permanent cerebral defects, via affecting central nervous system. Consumption of theses drugs seems to be increasing nowadays especially among the youth and university educated population. We conducted a study to evaluate the awareness of medical science students of Kerman University of medical science who are going to be the future medical population. Methods:This cross-sectional study was carried out on 471 of students of medicine, dentistry and pharmacy which were in the first to forth year of their education about psychedelic drugs (Ecstasy, LSD, Ice, crack and Yaba). To evaluate the students' awareness of drugs we used questionnaire with reliability and validity proven via pilot study. Statistics analysis was performed using SPSS13 software. Findings: Average of their age was 3.2 ± 20.4. Overall among the students, 56.7% were in the low level of insight, 34.3% in medium and 6.9% in good level and 2.2% had best insight of the drugs. Also only 32.2% of students had the full information about the name of drug, 25.7 % had information about the form of them, 24% about the addiction with them, 7% about their complication and only 5% about the origin of drugs. The information about all psychedelic drugs was higher among pharmacy students, students of the third year and males. Conclusion: Our study showed a low insight about psychedelic drugs like Ecstasy, LSD, Ice, Crack, and Yaba among the students. According to this lack of information of these groups, it is suggested that educational courses about the complication, signs and symptoms of these drugs be held. Keywords: Knowledge, Professional PhD students, Psychedelic drugs, Ecstasy, LSD, Ice, Crack, Yaba.
- انتشار مقاله: 18-08-1389
- نویسندگان: Akram Nakhaee,Amir Reza Ghassemi,Zahra Torshizi,Nazanin Ebrahimi,Najmeh Rostami,Zohreh Karimzadeh,Asieh Sanjaripoor,Vahid Sheibani
- مشاهده
- جایگاه : پژوهشی
- مجله: Addiction and Health
- نوع مقاله: Journal Article
- کلمات کلیدی: Early life stress,Maternal deprivation,Addiction
- چکیده:
- چکیده انگلیسی: Maternal separation (MS) is defined as the termination of the continuity of mother-child relationship after the relationship is established. Although MS and maternal deprivation are different in terms of their definitions, these two terms are usually used interchangeably. This review aims to investigate the effect of MS on drug intake in adulthood. It has been proved that animal models are helpful in evaluating the effects of MS on drug intake risk in adulthood. There are relatively acceptable studies in this field on some drugs such as morphine, ethanol, and cocaine. However, very few animal studies, or even no animal study, have been conducted on some other drugs. The majority of these studies have considered MS as a risk factor for drug intake in adulthood. Different mechanisms are proposed for this phenomenon. Brain reward pathways are one of the main exploratory pathways of this process. Despite the importance of the issue, no human study with a specific concentration on investigating the relationship between MS and drug abuse in later life was found. Causal studies are warranted on humans to investigate the effect of MS on drug intake in later life.
- انتشار مقاله: 24-12-1394
- نویسندگان: Fatemeh Delavari,Vahid Sheibani,Saeed Esmaeili-Mahani,Nouzar Nakhaee
- مشاهده
- جایگاه : پژوهشی
- مجله: Addiction and Health
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: Abstract Background: Psychedelic drugs can cause one to get out of normal status and permanent cerebral defects, via affecting central nervous system. Consumption of theses drugs seems to be increasing nowadays especially among the youth and university educated population. We conducted a study to evaluate the awareness of medical science students of Kerman University of medical science who are going to be the future medical population. Methods:This cross-sectional study was carried out on 471 of students of medicine, dentistry and pharmacy which were in the first to forth year of their education about psychedelic drugs (Ecstasy, LSD, Ice, crack and Yaba). To evaluate the students' awareness of drugs we used questionnaire with reliability and validity proven via pilot study. Statistics analysis was performed using SPSS13 software. Findings: Average of their age was 3.2 ± 20.4. Overall among the students, 56.7% were in the low level of insight, 34.3% in medium and 6.9% in good level and 2.2% had best insight of the drugs. Also only 32.2% of students had the full information about the name of drug, 25.7 % had information about the form of them, 24% about the addiction with them, 7% about their complication and only 5% about the origin of drugs. The information about all psychedelic drugs was higher among pharmacy students, students of the third year and males. Conclusion: Our study showed a low insight about psychedelic drugs like Ecstasy, LSD, Ice, Crack, and Yaba among the students. According to this lack of information of these groups, it is suggested that educational courses about the complication, signs and symptoms of these drugs be held. Keywords: Knowledge, Professional PhD students, Psychedelic drugs, Ecstasy, LSD, Ice, Crack, Yaba.
- انتشار مقاله: 18-08-1389
- نویسندگان: Akram Nakhaee,Amir Reza Ghassemi,Zahra Torshizi,Nazanin Ebrahimi,Najmeh Rostami,Zohreh Karimzadeh,Asieh Sanjaripoor,Vahid Sheibani
- مشاهده