OTHERS_CITABLE
Brain Connectivity Reflected in Electroencephalogram Coherence in Individuals With Autism: A Meta-analysis
Introduction: Many theories have been proposed about the etiology of autism. One is related to brain connectivity in patients with autism. Several studies have reported brain connectivity changes in autism disease. This study was performed on Electroencephalogram (EEG) studies that evaluated patients with autism, using functional brain connectivity, and compared them with typically-developing individuals.
Methods: Three scientific databases of ScienceDirect, Medline (PubMed), and BioMed Central were systematically searched through their online search engines. Comprehensive Meta-analysis software analyzed the obtained data.
Results: The systematic search led to 10 papers, in which EEG coherence was used to obtain the brain connectivity of people with autism. To determine the effect size, Cohen’s d parameter was used. In the first meta-analysis, the study of the maximum effect size was considered, and all significant effect sizes were evaluated in the second meta-analysis. The effect size was assessed using a random-effects model in both meta-analyses. The results of the first meta-analysis indicated that heterogeneity was not present among the studies (Q=13.345, P>0.1). The evaluation of all effect sizes in the second meta-analysis showed a significant lack of homogeneity among the studies (Q=56.984, P=0.0001).
Conclusion: On the whole, autism was found to be related to neural connectivity, and the present research showed the difference in the EEG coherence of people with autism and healthy people. These conclusions require further studies with more extensive data, considering different brain regions, and novel analysis techniques for assessing brain connectivity.
http://bcn.iums.ac.ir/article-1-1171-en.pdf
2019-09-01
409
418
10.32598/bcn.9.10.375
Autism spectrum disorder
Electroencephalography
Coherence
Meta-analysis
Vida
Mehdizadehfar
mehdizadeh@aut.ac.ir
1
Department of Biomedical Engineering, School of Electrical, Computer & Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-1820-8873
Farnaz
Ghassemi
ghassemi@aut.ac.ir
2
Department of Biomedical Engineering, School of Electrical, Computer & Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-4997-5805
Ali
Fallah
afallah@aut.ac.ir
3
Department of Biomedical Engineering, School of Electrical, Computer & Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-5078-8391
OTHERS_CITABLE
Posterior Tibial Nerve Stimulation in Fecal Incontinence: A Systematic Review and Meta-analysis
Introduction: The present systematic review and meta-analysis aims to investigate the role of Posterior Tibial Nerve Stimulation (PTNS) in the control of fecal incontinence (FI).
Methods: Two independent reviewers extensively searched in the electronic databases of Medline, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), Web of Science, CINAHL, and Scopus for the studies published until the end of 2016. Only randomized clinical trials were included. The studied outcomes included FI episodes, FI score, resting pressure, squeezing pressure, and maximum tolerable pressure. The data were reported as Standardized Mean Differences (SMD) with 95% confidence interval.
Results: Five articles were included in the present study (249 patients under treatment with PTNS and 239 in the sham group). Analyses showed that PTNS led to a significant decrease in the number of FI episodes (SMD=-0.38; 95% CI: -0.67-0.10; P=0.009). Yet, it did not have an effect on FI score (SMD=0.13; 95% CI: -0.49-0.75; P=0.68), resting pressure (SMD=0.12; 95% CI: -0.14-0.37; P=0.67), squeezing pressure (SMD=-0.27; 95% CI: -1.03-0.50; P=0.50), and maximum tolerable pressure (SMD=-0.10; 95% CI: -0.40-0.24; P=0.52).
Conclusion: Based on the results, it seems that the prescription of PTNS alone cannot significantly improve FI.
http://bcn.iums.ac.ir/article-1-1173-en.pdf
2019-09-01
419
432
10.32598/bcn.9.10.290
Fecal incontinence
Tibial nerve
Electrical nerve stimulation
Tibial neuromodulation
Arash
Sarveazad
arashsarveazad@gmail.com
1
Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-9273-1940
Asrin
Babahajian
babahajian3@yahoo.com
2
Liver and Digestive Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
AUTHOR
https://orcid.org/0000-0003-0278-1560
Naser
Amini
aminon@iums.ac.ir
3
Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-8453-9342
Jebreil
Shamseddin
shams.jebreil@gmail.com
4
Molecular Medicine Research Center, Hormozgan Health Institute, Department of Parasitology, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
AUTHOR
https://orcid.org/0000-0003-3149-9564
Mahmoud
Yousefifard
yousefifard20@gmail.com
5
Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-5181-4985
OTHERS_CITABLE
Bumetanide Therapeutic Effect in Children and Adolescents With Autism Spectrum Disorder: A Review Study
Introduction: Autism Spectrum Disorder (ASD) is characterized by several impairments in communications and social interactions, as well as restricted interests or stereotyped behaviors. Interventions applied for this disorder are based on multi-modal approaches, including pharmacotherapy. No definitive cure or medication has been introduced so far; therefore, researchers still investigate potential drugs for treating ASD. One of the new medications introduced for this purpose is bumetanide. The present article aimed to review the efficacy of this drug on the core symptoms of ASD and its potential side effects.
Methods: We searched all papers reported on pharmacokinetics, pharmacodynamics, efficacy, and adverse effects of bumetanide on animal models and humans with ASD. The papers were extracted from the main databases of PubMed, Web of Science, and Scopus.
Results: The findings revealed that cortical neurons have high chloride ion (Cl−)i and excitatory actions of gamma-aminobutyric acid in the valproic acid animal model with ASD and mice with fragile X syndrome. Bumetanide, which has been introduced as a diuretic, is also a high-affinity-specific Na+-K+-Cl− cotransporter (NKCC1) antagonist that can reduce Cl− level. The results also indicate that bumetanide can attenuate behavioral features of autism in both animal and human models. Moreover, the studies showed that such medication could activate fusiform face area in individuals with ASD while viewing emotional faces. Also, recent findings suggest that a dose of 1 mg/d of this drug, taken twice daily, might be the best compromise between safety and efficacy.
Conclusion: Recent studies provided some evidence that bumetanide can be a novel pharmacological agent in treating core symptoms of ASD. Future studies are required to confirm the efficacy of this medication in individuals with ASD.
http://bcn.iums.ac.ir/article-1-1286-en.pdf
2019-09-01
433
442
10.32598/bcn.9.10.380
Bumetanide
Diuretics
Autism Spectrum Disorder (ASD)
Raheleh
Mollajani
rmollajani@yahoo.com
1
Cognitive Neuroscience Institute for Cognitive Science Studies, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-1431-6244
Mohamad Taghi
Joghataei
Mt.joghataei@yahoo.com, joghataei.mt@iums.ac.ir
2
Department of Anatomy and Neuroscience, Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-4254-6426
Mehdi
Tehrani-doost
Tehranid@tums.ac.ir
3
Research Center for Cognitive and Behavioral Sciences, Tehran university of Medial Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0002-5800-2338
OTHERS_CITABLE
An Algorithmic Model of Decision Making in the Human Brain
One of the interesting topics in neuroscience is problem solving and decision-making. In this area, everything gets more complicated when events occur sequentially. One of the practical methods for handling the complexity of brain function is to create an empirical model. Model Predictive Control (MPC) is known as a powerful mathematical-based tool often used in industrial environments. We proposed an MPC and its algorithm as a part of the functionalities of the brain to improve the performance of the decision-making process. It is well known that the decision-making process results from communication between the prefrontal cortex (working memory) and hippocampus (long-term memory). However, there are other regions of the brain that play essential roles in making decisions, but their exact mechanisms of action still are unknown. In this study, we modeled those mechanisms with MPC. We showed that MPC controls the stream of data between prefrontal cortex and hippocampus in a closed-loop system to correct actions.
http://bcn.iums.ac.ir/article-1-1502-en.pdf
2019-09-01
443
450
10.32598/bcn.9.10.395
Decision-making process
Model predictive control
Memory structure
Prefrontal cortex
Hippocampus
Sohrab
Saberi Moghadam
sohrab.saberimoghadam@gmail.com
1
Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies, Amol, Iran.
AUTHOR
https://orcid.org/0000-0002-9889-6487
Farid
Samsami Khodadad
samsami@ausmt.ac.ir
2
Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies, Amol, Iran.
AUTHOR
https://orcid.org/0000-0002-6184-9919
Vahid
Khazaeinezhad
vahid.khazaeinezhad@gmail.com
3
Department of Computer Engineering, Faculty of Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran.
AUTHOR
https://orcid.org/0000-0003-1237-2461
OTHERS_CITABLE
Protective Effects of Nucleobinding-2 After Cerebral Ischemia Via Modulating Bcl-2/Bax Ratio and Reducing Glial Fibrillary Acid Protein Expression
Introduction: Nucleobinding-2 (NUCB2) or nesfatin-1, a newly identified anorexigenic peptide, has antioxidant, anti-inflammatory, and anti-apoptotic properties. Brain ischemia-reperfusion induces irreversible damages, especially in the hippocampus area. However, the therapeutic effects of NUCB2 have not been well investigated in cerebral ischemia. This study was designed for the first time to investigate the protective effects of NUCB2/Nesfatin-1 on the expression of apoptosis-related proteins and reactive astrogliosis level in the CA1 area of hippocampus in an experimental model of transient global cerebral ischemia.
Methods: The male Wistar rats were randomly allocated into 4 groups (sham, NUCB2, ischemia-reperfusion, and ischemia-reperfusion+NUCB21) (n =7). The model of cerebral ischemia was prepared by common carotid arteries occlusion for 20 minutes. Nesfatin-1 (20 µg/kg) and saline (as a vehicle) were injected (intraperitoneally) at the beginning of the reperfusion period. The assessment of the protein expression levels was performed by immunofluorescence and immunohistochemical staining.
Results: NUCB2 significantly reduced the Bax and GFAP protein levels in the CA1 area after ischemia (P<0.05). Also, NUCB2 increased Bcl-2 protein level (P<0.05). NUCB2 exerted protective effects against ischemic injury by the inhibition of astrocytes activation as an inflammatory response and decreased neuronal cell apoptosis.
Conclusion: The present study provides the possible neuroprotective view of nesfatin-1 in the treatment of ischemia injury model in rat hippocampus.
http://bcn.iums.ac.ir/article-1-1221-en.pdf
2019-09-01
451
460
10.32598/bcn.9.10.325
Nucleobinding-2 (NUCB2)
Nesfatin-1
Apoptosis
Astrogliosis
Hippocampus
Ischemia
Soheila
Erfani
sohailaerfani@gmail.com
1
Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
AUTHOR
https://orcid.org/0000-0001-5757-4361
Ali
Moghimi
moghimi@um.ac.ir
2
Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
AUTHOR
https://orcid.org/0000-0001-6105-3681
Nahid
Aboutaleb
dr.nabotaleb@gmail.com
3
Department of Physiology, Faculty of Medicine, Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0002-7514-5939
Mehdi
Khaksari
khaksari417@yahoo.com
4
Addiction Research Center, Shahroud University of Medical Sciences, Shahroud, Iran.
AUTHOR
https://orcid.org/0000-0002-2240-1521
OTHERS_CITABLE
Spatial Learning and Memory in Barnes Maze Test and Synaptic Potentiation in Schaffer Collateral-CA1 Synapses of Dorsal Hippocampus in Freely Moving Rats
Introduction: Synaptic plasticity has been suggested as the primary physiological mechanism underlying memory formation. Many experimental approaches have been used to investigate whether the mechanisms underlying Long-Term Potentiation (LTP) are activated during learning. Nevertheless, little evidence states that hippocampal-dependent learning triggers synaptic plasticity. In this study, we investigated if learning and memory in the Barnes maze test are accompanied by the occurrence of LTP in Schaffer collateral to CA1 synapses in freely moving rats.
Methods: The rats were implanted with a recording electrode in stratum radiatum and stimulating electrodes in Schaffer collaterals of the CA1 region in the dorsal hippocampus of the right hemisphere. Following the recovery period of at least 10 days, field potentials were recorded in freely moving animals before and after training them in Barnes maze as a hippocampal-dependent spatial learning and memory test. The slope of extracellular field Excitatory Postsynaptic Potentials (fEPSPs) was measured before and after the Barnes maze test.
Results: The results showed that the fEPSP slope did not change after learning and memory in the Barnes maze test, and this spatial learning did not result in a change in synaptic potentiation in the CA1 region of the hippocampus.
Conclusion: Spatial learning and memory in the Barnes maze test are not accompanied by LTP induction in Schaffer collateral-CA1 synapses.
http://bcn.iums.ac.ir/article-1-2061-en.pdf
2019-09-01
461
468
10.32598/bcn.9.10.330
Synaptic plasticity
Hippocampus
Barnes maze test
Spatial memory
Azam
Sadeghian
1
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
aghoub
Fathollahi
2
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
Mohammad
Javan
3
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
Amir
Shojaei
4
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
Nastaran
Kosarmadar
5
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
Mahmoud
Rezaei
6
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
Javad
Mirnajafi-Zadeh
mirnajaf@modares.ac.ir
7
Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
AUTHOR
OTHERS_CITABLE
Psychometric Properties of the Persian Translation of Video Gaming Addiction Test
Introduction: The current study aims to measure the validity, reliability, and psychometric properties of the Persian translation of the Video Gaming Addiction Test (VAT).
Methods: A total of 280 young men (14-20 years old) (Mean±SD age: 17.22±1.8 years), including excessive gamers and normal subjects, entered the study. They answered VAT, Visual Analog Scale (VAS), and Conner-Davidson Resilience Scale (CD-RISC). The VAT was translated and then back-translated. For testing reliability, we used the Cronbach alpha, split-half method, and Guttman method. Also, convergent and discriminant validity were tested to examine the construct validity of the translated version of VAT.
Results: The Cronbach alpha for the total scale was 0.81. Also, after splitting questions in half, the Cronbach alpha values for these halves were 0.71 and 0.69. Six Guttman lambdas were calculated with 0.75 minimum and 0.82 maximum, all showing good reliability of the test. Convergent validity was tested by testing the correlation between VAT and VAS. The Pearson correlation was fond 0.73, showing a strong relationship between the two factors (P<0.001). For testing discriminant validity, the association of VAT with CD-RISC was tested, showing no correlation between these scales (r=-0.157; P=0.09).
Conclusion: The Persian translation of the VAT is valid and reliable, and it is appropriate for research and clinical use with acceptable properties, similar to the original version.
http://bcn.iums.ac.ir/article-1-992-en.pdf
2019-09-01
469
474
10.32598/bcn.9.10.345
Video gaming Addiction test
Reliability
Validity
Psychometric properties
Zahrasadat
Hosseini
zzhh1986@gmail.com
1
Institute for Cognitive Sciences Studies (ICSS), Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-1560-3587
Roya
Delpazirian
r.delpazirian@gmail.com
2
Institute for Cognitive Sciences Studies (ICSS), Tehran, Iran.
AUTHOR
Hosseini
Mohajeri
hosseinmohajeri19288@gmail.com
3
Psychology Department, Faculty of Psychology and Educational Sciences, Allameh Tabataba’i University, Tehran, Iran.
AUTHOR
Peyman
Hassani Abharian
abharian1972@yahoo.com
4
Brain and Cogntive Clinic, Insitute for Cognitive Sciences Studies (ICSS), Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-4683-066X
OTHERS_CITABLE
Neuropsychological Decomposing Stroop Interference Into Different Cognitive Monitoring: An Exploratory Factor Analysis
Introduction: There are two alternative explanations of the Stroop phenomenon. Several studies have revealed that the difference in performance on congruent and incongruent trials can arise from response interference. On the contrary, many authors have claimed that Stroop interference might occur at earlier processing stages related to semantic or conceptual encoding. The present study aims to determine the number and nature of the factors necessary to account for the multiple components of Stroop interference.
Methods: The sample consisted of 247 undergraduate and postgraduate students. We employed the computerized version of the Stroop task adapted to the Iranian population. An exploratory principal components analysis was conducted on the correlations of 6 variables (reaction time under congruent and incongruent conditions, omission error under congruent and incongruent conditions, and commission error under congruent and incongruent conditions).
Results: Two factors were extracted. The first factor may be semantic interference, and the second factor may be response interference.
Conclusion: The findings of this research are consistent with the multiple-stage account, claiming that Stroop interference is because of both semantic and response interferences.
http://bcn.iums.ac.ir/article-1-1012-en.pdf
2019-09-01
475
484
10.32598/bcn.9.10.265
Stroop
Stroop interference
Semantic interference
Response interference
Mazaher
Rezaei
mazrez@zums.ac.ir
1
Departments of Clinical Psychology, Shahid Beheshti Hospital, Zanjan University of Medical Sciences, Zanjan, Iran.
AUTHOR
https://orcid.org/0000-0002-3568-1796
Fardin
Azizian
2
Department of Psychiatry, Imam Hossein Hospital, Alborz University of Medical Sciences, Karaj, Iran.
AUTHOR
https://orcid.org/0000-0001-7517-1638
OTHERS_CITABLE
A 6-step Approach to Gain Higher Quality Results From Organotypic Hippocampal Brain Slices in a Traumatic Brain Injury Model
Introduction: Organotypic Hippocampal Brain Slices (OHBS) provide an advantageous alternative to in vivo models to scrutinize Traumatic Brain Injury (TBI). We followed a well-established TBI protocol, but noticed that several factors may influence the results in such a set-up. Here, we describe a structured approach to generate more comparable results and discuss why specific eligibility criteria should be applied.
Methods: We defined necessary checkpoints and developed inclusion and exclusion criteria that take the observed variation in such a model into consideration. Objective measures include the identification and exclusion of pre-damaged slices and outliers. Six steps were outlined in this study.
Results: A six-step approach to enhance comparability is proposed and summarized in a flowchart. We applied the suggested measures to data derived from our TBI-experiments examining the impact of three different interventions in 1459 OHBS. Our exemplary results show that through equal requirements set for all slices more precise findings are ensured.
Conclusion: Results in a TBI experiment on OHBS should be analyzed critically as inhomogeneities may occur. In order to ensure more precise findings, a structured approach of comparing the results should be followed. Further research is recommended to confirm and further develop this framework.
http://bcn.iums.ac.ir/article-1-1019-en.pdf
2019-09-01
485
498
10.32598/bcn.9.10.235
Organotypic hippocampal brain slices
In vitro model
Traumatic Brain Injury (TBI)
Propidium Iodide (PI)
Eligibility
Framework
Linda
Grüßer
linda.gruesser@googlemail.com
1
Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
https://orcid.org/0000-0002-1274-5611
Rosmarie
Blaumeiser-Debarry
Rblaumeiser-debarry@ukaachen.de
2
Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
Rolf
Rossaint
rrossaint@ukaachen.de
3
Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
https://orcid.org/0000-0001-7587-1693
Matthias
Krings
matthias.krings@rwth-aachen.de
4
Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
Benedikt
Kremer
benedikt.kremer@rwth-aachen.de
5
Department of Neurosurgery, RWTH Aachen University Hospital, Pauwelsstr. 30, 52074 Aachen, Germany
AUTHOR
Anke
Höllig
ahoellig@ukaachen.de
6
Department of Neurosurgery, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
https://orcid.org/0000-0002-1507-0904
Mark
Coburn
mcoburn@ukaachen.de
7
Department of Anesthesiology, RWTH Aachen University Hospital, Aachen, Germany.
AUTHOR
https://orcid.org/0000-0002-7930-0270
OTHERS_CITABLE
Correlation Analysis of the Tinnitus Handicap Inventory and Distress Network in Chronic Tinnitus: An EEG Study
Introduction: Tinnitus is a common disorder with a considerable amount of distress that affects the patient`s daily life. No objective tools were approved for measuring tinnitus distress. It can be estimated only by subjective scales and questionnaires, albeit, the Electroencephalography (EEG) studies have reported some alterations regarding tinnitus distress network. This study aimed to investigate the correlation between Tinnitus Handicap Inventory (THI) and the recorded EEG data.
Methods: A total of 33 chronic tinnitus cases (9 females) with the mean age of 42.67 years were recruited. Their THI scores were collected, and a 3-minute EEG recorded with eye closed at resting-state. The correlation analysis was performed on THI scores and the current density in the selected Region of Interests (ROIs) concerning the distress network for the eight frequency bands. The patients grouped depending on the THI cutoff point of 56 into low and high THI groups, and then the groups were compared for source analysis and functional connectivity between ROIs using standardized low-resolution brain electromagnetic tomography.
Results: A significant positive correlation was seen between THI scores and the electrical activity in the Anterior Cingulate Cortex (ACC), the prefrontal cortex, and the parahippocampus for an alpha band (P<0.05) and in the ACC for beta (P<0.01). Source analysis showed significant differences with increased activity in the high THI group for alpha, beta and gamma bands. Functional connectivity was also elevated in the high THI group between the ROIs in alpha and beta bands.
Conclusion: THI can be a useful tool for measuring tinnitus distress, and it has a high correlation with EEG data.
http://bcn.iums.ac.ir/article-1-1111-en.pdf
2019-09-01
499
514
10.32598/bcn.9.10.215
Tinnitus
Tinnitus-related distress
Tinnitus Handicap Inventory (THI)
Correlation
Electroencephalography
Functional connectivity
Samer
Mohsen
Mohsen.s@tak.iums.ac.ir
1
Department of Otolaryngology, School of Medicine, Damascus University, Damascus, Syria.
AUTHOR
https://orcid.org/0000-0003-1853-9445
Saeid
Mahmoudian
saeid.mahmodian@gmail.com
2
ENT and Head & Neck Research Center, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0002-6908-7605
Saeed
Talbian
talebian@tums.ac.ir
3
School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
AUTHOR
Akram
Pourbakht
Pourbakht.a@iums.ac.ir
4
Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0002-9779-3558
OTHERS_CITABLE
Combined Effect of Noise and Smoking on the Cognitive Performance of Automotive Industry Workers
Introduction: Noise is an environmental stressor and can cause or exacerbate mental disorders, and affect the individual performance in certain conditions. This study aimed to evaluate the combined effects of noise and smoking on the cognitive performance of the workers in the automotive industry.
Methods: This research is a descriptive-analytical study with a cross-sectional design conducted on 300 workers randomly assigned into two groups of noise-exposed and nonexposed. They were examined using computerized tests, including the Tower of London test (TOL), Continuous Performance test (CPT), and Stroop test. The sound pressure levels were measured based on an 8-hour equal-loudness contour in each group according to ISO 9612 standard, using the Testo CEL-815 sound level meter.
Results: The study of combined effects of noise and smoking on 12 CPT indicators using the 2-way Analysis of Variance (ANOVA) indicate that noise and smoking factors had a significant impact on the mean number of errors and correct responses in the third 50-stimuli stage, the mean number of errors and correct responses in the second 50-stimuli stage with P<0.001, P<0.001, P=0.012 and P<0.001 for smoking respectively, but only noise affected the other 7 indicators (P<0.001).
Conclusion: Smoking and noise have negative impacts on concentration, attention, and cognitive processing speed, which can lead to an individual’s mistakes and delayed decision making at the workplace.
http://bcn.iums.ac.ir/article-1-1261-en.pdf
2019-09-01
515
526
10.32598/bcn.10.5.513
Stroop test
Smoking
Noise
Occupational
Cognitive science
Iraj
Alimohammadi
alimohammadi.i@iums.ac.ir
1
Department of Occupational Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-8353-6051
Fakhradin
Ahmadi kanrash
f_ahmadi1367@yahoo.com
2
Department of Occupational Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-3257-9128
Jamileh
Abolaghasemi
Abolghasemi.j@iums.ac.ir
3
Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0003-3898-2217
Ali
Shahbazi
shahbazial@yahoo.com
4
Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0001-5222-4792
Hanieh
Afrazandehh
kazem3293@yahoo.com
5
Department of Internal Medicine, School of medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
AUTHOR
Kazem
Rahmani
kazem3293@yahoo.com
6
Department of Epidemiology and Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
AUTHOR
https://orcid.org/0000-0002-6940-7947
OTHERS_CITABLE
Curcumin Effects on Memory Impairment and Restoration of Irregular Neuronal Distribution in the Hippocampal CA1 Region After Global Cerebral Ischemia in Male Rats
Introduction: Global Cerebral Ischemia (GCI) causes neuronal damage with subsequent neurological and cognitive impairments. Curcumin has anti-inflammatory, antioxidant, and neuroprotective properties, which makes it a potential candidate for improving GCI-induced impairments. This study aimed to investigate the effects of curcumin on the neurological and memory deficits, as well as spatial neuronal distribution in the CA1 region after GCI in rats.
Methods: 56 Sprague-Dawley male rats were randomly assigned into 4 groups of sham (n=14), control (n=14), curcumin 50 mg/kg (n=14), and curcumin 100 mg/kg (n=14). Each group was divided into the two subgroups of short-term (7 days) and long-term (28 days) treatment periods. The neurological severity score (NSS), passive avoidance task, and the traction test were performed at postoperative days of 0, 1, 2, 3, 7, 14, 21, and 28. The novel object recognition test and Voronoi tessellation were carried out on days 7 and 28 after GCI.
Results: Curcumin 100 mg/kg significantly decreased neurological severity score on postoperative days of 7 and 28 compared with the control (P<0.001) and curcumin 50 mg/kg groups (P<0.05-P<0.001). Also, curcumin 100 mg/kg significantly increased step-through latency times on postoperative days of 3-28 and 14-28 compared with the control (P<0.05-P<0.001) and curcumin 50 mg/kg groups (P<0.01-P<0.001). Moreover, it increased the novelty preference index during the novel object recognition test in the 28-day treatment subgroup after GCI. Curcumin (100 mg/kg) could maintain the neuronal aggregation in the CA1 region after GCI at a level near to what is generally observed in normal rats.
Conclusion: Curcumin could improve memory and neurological deficits and restore irregular neuronal distribution in the CA1 region after GCI in a time-dependent manner, and its higher dose was more effective than its lower dose. Curcumin may have beneficial effects on reducing brain complications after ischemia.
http://bcn.iums.ac.ir/article-1-1144-en.pdf
2019-09-01
527
540
10.32598/bcn.9.10.365
Curcumin
Global cerebral ischemia
Memory
Neurological deficit
Tessellation
Brain
Rat
Leila
Kamali Dolatabadi
leili_kamali@yahoo.com
1
Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
AUTHOR
https://orcid.org/0000-0001-7848-6897
Masoumeh
Emamghoreishi
emamm@sums.ac.ir
2
2-1.Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran; 2-2. Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; 2-3.Research Center for Psychiatry and Behavior Science, Shiraz University of Medical Sciences, Shiraz, Iran.
AUTHOR
https://orcid.org/0000-0001-6388-3689
Mohammad Reza
Namavar
namavarm@sums.ac.ir
3
3-1.Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; 3-2. Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; 3-3.Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
AUTHOR
Hamze
Badeli Sarkala
hamzebadeli@gmail.com
4
Department of Anatomy, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
AUTHOR
https://orcid.org/0000-0002-4264-1071