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Mostajeran M, Alizadeh S, Rostami HR, Ghaffari A, Adibi I. Feasibility and efficacy of an early sensory-motor rehabilitation program on hand function in patients with stroke: a pilot, single-subject experimental design. Neurol Sci 2024; 45:2737-2746. [PMID: 38158472 DOI: 10.1007/s10072-023-07288-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
OBJECTIVE Hand and upper limb functional impairments following stroke lead to limitations in performing activities of daily living. We aimed to investigate feasibility and efficacy of an early sensory-motor rehabilitation program on hand and upper limb function in patients with acute stroke. DESIGN A pilot, single-subject experimental, A-B-A study. SETTING Stroke unit of an educational hospital and an outpatient occupational therapy clinic. PARTICIPANTS A convenience sample including five people with acute stroke. PROCEDURES Participants received 3 h of an intensive hand and upper limb sensory and motor rehabilitation program, 5 days per week for 3 months (15-min mental imagery, 15-min action observation, 30-min mirror therapy, 1.5-h constraint-induced movement therapy, and 30-min bilateral arm training). Activities were chosen based on the task-oriented occupational therapy approach. OUTCOME MEASURES An assessor blinded to intervention program measured sensory and motor functions using action research arm test, box and block test, Semmes-Weinstein monofilaments, and upper extremity section of Fugl-Meyer assessment. RESULTS Assessment data points in intervention and follow-up phases compared to baseline were in higher levels, sloped upwardly, and increased significantly for all participants in all outcome measures. CONCLUSIONS The present pilot study showed that a package of nowadays evidence-based rehabilitation methods including mental imagery, action observation, mirror therapy, modified constraint-induced movement therapy, bilateral arm training, and task-oriented occupational therapy approach is able to improve sensory and motor functions of the hand and upper limb in patients with acute stroke.
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Affiliation(s)
- Maryam Mostajeran
- Department of Cognitive Psychology, Faculty of Education and Psychology, University of Isfahan, Isfahan, Iran
| | - Saeed Alizadeh
- Department of Occupational Therapy, Faculty of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamid Reza Rostami
- Department of Occupational Therapy, Musculoskeletal Research Center, Faculty of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Amin Ghaffari
- Department of Occupational Therapy, Faculty of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Iman Adibi
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Kazemi F, Mostajeran M, Romanov G. Analysis of multipacting threshold sensitivity to the random distributions of the secondary electron yield parameters. Sci Rep 2024; 14:754. [PMID: 38191577 PMCID: PMC10774443 DOI: 10.1038/s41598-024-51289-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024] Open
Abstract
The way multipacting develops, depends strongly on the secondary emission property of the surface material. The knowledge of secondary electron yield is crucial for accurate prediction of the multipacting threshold. Variations in secondary electron yield parameters from experimental measurements create uncertainty, stemming from handling and surface preparation, and these uncertainties significantly affect multipacting threshold predictions. Despite their significance, the previous studies on the multipacting phenomenon did not adequately address the effect of an assumed random distribution of the secondary emission parameters on the multipacting threshold. Therefore, this paper aims to provide a comprehensive statistical study on how the different random distributions of the secondary emission parameters and, as a result, the uncertainty in the secondary electron yield affect multipacting thresholds. We focus on three commonly used distributions, namely uniform, normal, and truncated normal distributions, to define the uncertainty of random inputs. We use the chaos polynomial expansion method to determine how much each of the random parameters contributes to the multipacting threshold uncertainty. Additionally, we calculate Sobol sensitivity indices to evaluate the impact of the individual parameters or groups of parameters on the model outputs and study how different random distributions of these parameters affected the Sobol index results.
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Affiliation(s)
- Firozeh Kazemi
- Faculty of Physics, Yazd University, P.O. Box 89195-741, Yazd, Iran
| | - Maryam Mostajeran
- Faculty of Physics, Yazd University, P.O. Box 89195-741, Yazd, Iran.
| | - Gennady Romanov
- Fermi National Accelerator Laboratory, Batavia, IL, 60510, USA
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Mostajeran M, Edvinsson L, Ahnstedt H, Arkelius K, Ansar S. Repair-related molecular changes during recovery phase of ischemic stroke in female rats. BMC Neurosci 2022; 23:23. [PMID: 35413803 PMCID: PMC9004052 DOI: 10.1186/s12868-022-00696-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 02/23/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Some degree of spontaneous recovery is usually observed after stroke. Experimental studies have provided information about molecular mechanisms underlying this recovery. However, the majority of pre-clinical stroke studies are performed in male rodents, and females are not well studied. This is a clear discrepancy when considering the clinical situation. Thus, it is important to include females in the evaluation of recovery mechanisms for future therapeutic strategies. This study aimed to evaluate spontaneous recovery and molecular mechanisms involved in the recovery phase two weeks after stroke in female rats. METHODS Transient middle cerebral artery occlusion was induced in female Wistar rats using a filament model. Neurological functions were assessed up to day 14 after stroke. Protein expression of interleukin 10 (IL-10), transforming growth factor (TGF)-β, neuronal specific nuclei protein (NeuN), nestin, tyrosine-protein kinase receptor Tie-2, extracellular signal-regulated kinase (ERK) 1/2, and Akt were evaluated in the peri-infarct and ischemic core compared to contralateral side of the brain at day 14 by western blot. Expression of TGF-β in middle cerebral arteries was evaluated by immunohistochemistry. RESULTS Spontaneous recovery after stroke was observed from day 2 to day 14 and was accompanied by a significantly higher expression of nestin, p-Akt, p-ERK1/2 and TGF-β in ischemic regions compared to contralateral side at day 14. In addition, a significantly higher expression of TGF-β was observed in occluded versus non-occluded middle cerebral arteries. The expression of Tie-2 and IL-10 did not differ between the ischemic and contralateral sides. CONCLUSION Spontaneous recovery after ischemic stroke in female rats was coincided by a difference observed in the expression of molecular markers. The alteration of these markers might be of importance to address future therapeutic strategies.
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Affiliation(s)
- Maryam Mostajeran
- Division of Experimental Vascular Research, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Lars Edvinsson
- Division of Experimental Vascular Research, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Hilda Ahnstedt
- Department of Neurology, McGovern Medical School at University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Kajsa Arkelius
- Applied Neurovascular Research, Neurosurgery, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden
| | - Saema Ansar
- Applied Neurovascular Research, Neurosurgery, Department of Clinical Sciences, Faculty of Medicine, Lund University, Lund, Sweden.
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Singh B, Mostajeran M, Su YC, Al-Jubair T, Riesbeck K. Assays for Studying the Role of Vitronectin in Bacterial Adhesion and Serum Resistance. J Vis Exp 2018. [PMID: 30394376 DOI: 10.3791/54653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Bacteria utilize complement regulators as a means of evading the host immune response. Here, we describe protocols for evaluating the role vitronectin acquisition at the bacterial cell surface plays in resistance to the host immune system. Flow cytometry experiments identified human plasma vitronectin as a ligand for the bacterial receptor outer membrane protein H of Haemophilus influenzae type f. An enzyme-linked immunosorbent assay was employed to characterize the protein-protein interactions between purified recombinant protein H and vitronectin, and binding affinity was assessed using bio-layer interferometry. The biological importance of the binding of vitronectin to protein H at the bacterial cell surface in evasion of the host immune response was confirmed using a serum resistance assay with normal and vitronectin-depleted human serum. The importance of vitronectin in bacterial adherence was analyzed using glass slides with and without vitronectin coating, followed by Gram staining. Finally, bacterial adhesion to human alveolar epithelial cell monolayers was investigated. The protocols described here can be easily adapted to the study of any bacterial species of interest.
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Affiliation(s)
- Birendra Singh
- Clinical Microbiology, Department of Translational Medicine, Lund University; Department of Molecular Biology, Umea University
| | - Maryam Mostajeran
- Clinical Microbiology, Department of Translational Medicine, Lund University
| | - Yu-Ching Su
- Clinical Microbiology, Department of Translational Medicine, Lund University
| | - Tamim Al-Jubair
- Clinical Microbiology, Department of Translational Medicine, Lund University
| | - Kristian Riesbeck
- Clinical Microbiology, Department of Translational Medicine, Lund University;
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Mostajeran M, Wetterling F, W. Blixt F, Edvinsson L, Ansar S. Acute mitogen-activated protein kinase 1/2 inhibition improves functional recovery and vascular changes after ischaemic stroke in rat-monitored by 9.4 T magnetic resonance imaging. Acta Physiol (Oxf) 2018; 223:e12985. [PMID: 29055086 DOI: 10.1111/apha.12985] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/27/2017] [Accepted: 10/15/2017] [Indexed: 11/30/2022]
Abstract
AIM The aim was to evaluate the beneficial effect of early mitogen-activated protein kinase (MEK)1/2 inhibition administered at a clinical relevant time-point using the transient middle cerebral artery occlusion model and a dedicated rodent magnetic resonance imaging system (9.4T) to monitor cerebrovascular changes non-invasively for 2 weeks. METHOD Transient middle cerebral artery occlusion was induced in male rats for two hours followed by reperfusion. The specific MEK1/2 inhibitor U0126 was administered ip at 6 and 24 hours post-reperfusion. Neurological functions were evaluated by 6- and 28-point tests. 9.4 T magnetic resonance imaging was used to monitor morphological infarct changes at day 2, 8 and 14 after stroke and to evaluate cerebral perfusion at day 14. Immunohistochemistry evaluation of Ki67 was performed 14 days post-stroke. RESULTS U0126 improved long-term behavioural outcome and significantly reduced infarct size. In addition, cerebral perfusion in U0126-treated animals was improved compared to the vehicle group. Immunohistochemistry showed a significant increase in Ki67+ cells in U0126-treated animals compared to the vehicle group. CONCLUSION Early MEK1/2 inhibition improves long-term functional outcome, promotes recovery processes after stroke and most importantly provides a realistic time window for therapy.
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Affiliation(s)
- M. Mostajeran
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - F. Wetterling
- Trinity College Institute of Neuroscience; University of Dublin; Dublin Ireland
| | - F. W. Blixt
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - L. Edvinsson
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - S. Ansar
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
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Grell AS, Mostajeran M, Edvinsson L, Ansar S. Contractile Responses in Spontaneously Hypertensive Rats after Transient Middle Cerebral Artery Occlusion. Pharmacology 2017; 101:120-132. [PMID: 29190633 DOI: 10.1159/000481570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 09/12/2017] [Indexed: 11/19/2022]
Abstract
Stroke is one of the leading causes of mortality and morbidity worldwide, and few therapeutic treatments have shown beneficial effect clinically. One reason for this could be the lack of risk factors incorporated into the preclinical stroke research. We have previously demonstrated phenotypic receptor changes to be one of the injurious mechanisms occurring after stroke but mostly in healthy rats. The aim of this study was to investigate if hypertension has an effect on vasoconstrictive receptor responses to endothelin 1, sarafotoxin 6c and angiotensin II after stroke by inducing transient middle cerebral artery occlusion in spontaneously hypertensive rats and Wistar-Kyoto rats using the wire-myograph. We demonstrated an increased contractile response to endothelin 1 and extracellular potassium as well as an increased carbachol-induced dilator response in the middle cerebral arteries from hypertensive rats after stroke. This study demonstrates the importance of including risk factors in experimental stroke research.
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Affiliation(s)
- Anne-Sofie Grell
- Department of Clinical Experimental Research, Glostrup Research Institute, Glostrup, Denmark
| | - Maryam Mostajeran
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Lars Edvinsson
- Department of Clinical Experimental Research, Glostrup Research Institute, Glostrup, Denmark.,Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Saema Ansar
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
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Mostajeran M, Edvinsson L, Warfvinge K, Singh R, Ansar S. Inhibition of mitogen-activated protein kinase 1/2 in the acute phase of stroke improves long-term neurological outcome and promotes recovery processes in rats. Acta Physiol (Oxf) 2017; 219:814-824. [PMID: 26595054 DOI: 10.1111/apha.12632] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 10/30/2015] [Accepted: 11/16/2015] [Indexed: 01/11/2023]
Abstract
AIM Extracellular signal-regulated kinase (ERK) 1/2 is activated during acute phase of stroke and contributes to stroke pathology. We have found that acute treatment with MEK1/2 inhibitors decreases infarct size and neurological deficits 2 days after experimental stroke. However, it is not known whether benefits of this inhibition persist long-term. Therefore, the aim of this study was to assess neurological function, infarct size and recovery processes 14 days after stroke in male rats to determine long-term outcome following acute treatment with the MEK1/2 inhibitor U0126. METHODS Transient middle cerebral artery occlusion was induced in male rats. U0126 or vehicle was given at 0 and 24 h of reperfusion. Neurological function was assessed by staircase, 6-point and 28-point neuroscore tests up to 14 days after induction of stroke. At day 14, infarct volumes were determined and recovery processes were evaluated by measuring protein expression of the tyrosine kinase receptor Tie-2 and nestin. Levels of p-ERK1/2 protein were determined. RESULTS Acute treatment with U0126 significantly improved long-term functional recovery, reduced infarct size, and enhanced Tie-2 and nestin protein expression at 14 days post-stroke. There was no residual blockade of p-ERK1/2 at this time point. CONCLUSION It is demonstrated that benefits of early treatment with U0126 persist beyond subacute phase of ischaemic stroke in male rats. Prevention of ERK1/2 activation in the acute phase results in improved long-term functional outcome and enhances later-stage recovery processes. These results expand our understanding of the benefits and promise of using MEK1/2 inhibitors in stroke recovery.
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Affiliation(s)
- M. Mostajeran
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - L. Edvinsson
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - K. Warfvinge
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - R. Singh
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
| | - S. Ansar
- Division of Experimental Vascular Research; Department of Clinical Sciences; Lund University; Lund Sweden
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Jiang S, Robertson T, Mostajeran M, Robertson AJ, Qiu X. Differential gene expression of two extreme honey bee (Apis mellifera) colonies showing varroa tolerance and susceptibility. Insect Mol Biol 2016; 25:272-282. [PMID: 26919127 DOI: 10.1111/imb.12217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Varroa destructor, an ectoparasitic mite of honey bees (Apis mellifera), is the most serious pest threatening the apiculture industry. In our honey bee breeding programme, two honey bee colonies showing extreme phenotypes for varroa tolerance/resistance (S88) and susceptibility (G4) were identified by natural selection from a large gene pool over a 6-year period. To investigate potential defence mechanisms for honey bee tolerance to varroa infestation, we employed DNA microarray and real time quantitative (PCR) analyses to identify differentially expressed genes in the tolerant and susceptible colonies at pupa and adult stages. Our results showed that more differentially expressed genes were identified in the tolerant bees than in bees from the susceptible colony, indicating that the tolerant colony showed an increased genetic capacity to respond to varroa mite infestation. In both colonies, there were more differentially expressed genes identified at the pupa stage than at the adult stage, indicating that pupa bees are more responsive to varroa infestation than adult bees. Genes showing differential expression in the colony phenotypes were categorized into several groups based on their molecular functions, such as olfactory signalling, detoxification processes, exoskeleton formation, protein degradation and long-chain fatty acid metabolism, suggesting that these biological processes play roles in conferring varroa tolerance to naturally selected colonies. Identification of differentially expressed genes between the two colony phenotypes provides potential molecular markers for selecting and breeding varroa-tolerant honey bees.
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Affiliation(s)
- S Jiang
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - T Robertson
- Meadow Ridge Enterprises Ltd, Saskatoon, SK, Canada
| | - M Mostajeran
- Meadow Ridge Enterprises Ltd, Saskatoon, SK, Canada
| | | | - X Qiu
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
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Ahnstedt H, Mostajeran M, Blixt FW, Warfvinge K, Ansar S, Krause DN, Edvinsson L. U0126 attenuates cerebral vasoconstriction and improves long-term neurologic outcome after stroke in female rats. J Cereb Blood Flow Metab 2015; 35:454-60. [PMID: 25492115 PMCID: PMC4348385 DOI: 10.1038/jcbfm.2014.217] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/28/2014] [Accepted: 10/31/2014] [Indexed: 11/09/2022]
Abstract
Sex differences are well known in cerebral ischemia and may impact the effect of stroke treatments. In male rats, the MEK1/2 inhibitor U0126 reduces ischemia-induced endothelin type B (ETB) receptor upregulation, infarct size and improves acute neurologic function after experimental stroke. However, responses to this treatment in females and long-term effects on outcome are not known. Initial experiments used in vitro organ culture of cerebral arteries, confirming ERK1/2 activation and increased ETB receptor-mediated vasoconstriction in female cerebral arteries. Transient middle cerebral artery occlusion (tMCAO, 120 minutes) was induced in female Wistar rats, with U0126 (30 mg/kg intraperitoneally) or vehicle administered at 0 and 24 hours of reperfusion, or with no treatment. Infarct volumes were determined and neurologic function was assessed by 6-point and 28-point neuroscores. ETB receptor-mediated contraction was studied with myograph and protein expression with immunohistochemistry. In vitro organ culture and tMCAO resulted in vascular ETB receptor upregulation and activation of ERK1/2 that was prevented by U0126. Although no effect on infarct size, U0126 improved the long-term neurologic function after experimental stroke in female rats. In conclusion, early prevention of the ERK1/2 activation and ETB receptor-mediated vasoconstriction in the cerebral vasculature after ischemic stroke in female rats improves the long-term neurologic outcome.
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Affiliation(s)
- Hilda Ahnstedt
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Maryam Mostajeran
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Frank W Blixt
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Karin Warfvinge
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Saema Ansar
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Diana N Krause
- Department of Pharmacology, School of Medicine, University of California, Irvine, California, USA
| | - Lars Edvinsson
- Division of Experimental Vascular Research, Department of Clinical Sciences, Lund University, Lund, Sweden
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Meshkati M, Mostajeran M, Hajariyan A, Nematolahi S, Hosseyni L. P3.340 Study of Knowledge and Attitudes of Married Women Aged 10 to 49 Referred to Health Centres Affiliated to Isfahan University of Medical Sciences and Health Providers Employed at These Centres About AIDS and Some Factors Related to –2011. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ghiaci M, Mostajeran M, Gil A. Synthesis and Characterization of Co–Mn Nanoparticles Immobilized on a Modified Bentonite and Its Application for Oxidation of p-Xylene to Terephthalic Acid. Ind Eng Chem Res 2012. [DOI: 10.1021/ie3021939] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Ghiaci
- Department of Chemistry, Isfahan University of Technology, Isfahan, 8415683111,
Iran
| | - M. Mostajeran
- Department of Chemistry, Isfahan University of Technology, Isfahan, 8415683111,
Iran
| | - A. Gil
- Department of Applied
Chemistry, Public University of Navarra, 31006 Pamplona, Spain
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Komijani M, Bouzari M, Etemadifar M, Zarkesh-Esfahani H, Shaykh-Baygloo N, Ghazimorad A, Mostajeran M, Nasr-Azadani A, Maghzi AH. Torque teno mini virus infection and multiple sclerosis. Int J Neurosci 2011; 121:437-41. [PMID: 21545307 DOI: 10.3109/00207454.2011.569039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Multiple sclerosis (MS) is a disease of young adults which is characterized by autoimmune demyelination of the central nervous system. Interaction of genetics and environmental factors are required to cause MS. Among the proposed environmental factors for MS, viral infections are thought to play a role in the pathogenesis of the disease. Torque teno mini virus (TTMV), which has recently been shown to infect humans, is a member of circoviridae, and has a circular DNA with 2860 nucleotides. Since there are a few data about the pathogenicity of this virus, this study sought to investigate the presence of TTMV in sera from MS patients and healthy individuals. We studied 149 serum samples from MS patients and 150 sera of healthy individuals. Serum DNA was extracted using phenol-chloroform and was subjected to nested polymerase chain reaction. TTMV-DNA was detected in 24 (16%) sera of the healthy blood donors and in 21 (14.1%) samples of the MS patients, where the difference did not reach significance (p > .05). The result of this study could not establish an association between TTMV infection and MS.
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Affiliation(s)
- Majid Komijani
- Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran
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