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Minagar A, Jabbour R, Jabbour H. The Human Gut Microbiota: A Dynamic Biologic Factory. Adv Biochem Eng Biotechnol 2024. [PMID: 38337077 DOI: 10.1007/10_2023_243] [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] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
The human body constitutes a living environment for trillions of microorganisms, which establish the microbiome and, the largest population among them, reside within the gastrointestinal tract, establishing the gut microbiota. The term "gut microbiota" refers to a set of many microorganisms [mainly bacteria], which live symbiotically within the human host. The term "microbiome" means the collective genomic content of these microorganisms. The number of bacterial cells within the gut microbiota exceeds the host's cells; collectively and their genes quantitatively surpass the host's genes. Immense scientific research into the nature and function of the gut microbiota is unraveling its roles in certain human health activities such as metabolic, physiology, and immune activities and also in pathologic states and diseases. Interestingly, the microbiota, a dynamic ecosystem, inhabits a particular environment such as the human mouth or gut. Human microbiota can evolve and even adapt to the host's unique features such as eating habits, genetic makeup, underlying diseases, and even personalized habits. In the past decade, biologists and bioinformaticians have concentrated their research effort on the potential roles of the gut microbiome in the development of human diseases, particularly immune-mediated diseases and colorectal cancer, and have initiated the assessment of the impact of the gut microbiome on the host genome. In the present chapter, we focus on the biological features of gut microbiota, its physiology as a biological factory, and its impacts on the host's health and disease status.
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Affiliation(s)
- Alireza Minagar
- Department of Biotechnology (Bioinformatics), University of Maryland Global Campus, Adelphi, MD, USA
| | - Rabih Jabbour
- University of Maryland Global Campus, Largo, MD, USA
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Zamanifekri B, Zamanifekri M, Babakoohi S, Whalen M, Minagar A. Leptomeningeal Metastatic Prostate Cancer Imitating a Subdural Hematoma. Cureus 2022; 14:e31380. [DOI: 10.7759/cureus.31380] [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] [Accepted: 11/11/2022] [Indexed: 11/13/2022] Open
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Schrott L, Yi P, Jackson K, Jackson GS, Webb C, Minagar A, Yun JW, Purdum G, Rios DJ, Tyler TA, Vizcanio MI, Castor JL, Castor T, Alexander JS. Nanoparticle-Encapsulated Bryostatin-1 Activates α-Secretase and PKC Isoforms In vitro and Facilitates Acquisition and Retention of Spatial Learning in an Alzheimer's Disease Mouse Model. Curr Alzheimer Res 2021; 17:1302-1310. [PMID: 33602091 DOI: 10.2174/1567205018666210218155835] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 03/08/2020] [Revised: 12/21/2020] [Accepted: 12/30/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) animal models have revealed neuroprotective actions of Bryostatin-1 mediated by activation of novel PKC isoforms, suppression of beta-amyloid and downregulation of inflammatory and angiogenic events, making Bryostatin-1 an attractive candidate for attenuating AD-associated neural, vascular, and cognitive disturbances. OBJECTIVE To further enhance Bryostatin-1 efficacy, nanoparticle-encapsulated Bryostatin-1 formulations were prepared. METHODS We compared nano-encapsulated and unmodified Bryostatin-1 in in vitro models of neuronal PKC-d, PKC-e isoforms, α-secretase and studied nano-encapsulated Bryostatin-1 in an AD mouse model of spatial memory (BC3-Tg (APPswe, PSEN1 dE9) 85Dbo/J mice). RESULTS We found that nanoencapsulated Bryostatin-1 formulations displayed activity greater or equal to that of unmodified Bryostatin-1 in PKC-δ and -ε and α-secretase activation assays. We next evaluated how treatment with a nanoencapsulated Bryostatin-1 formulation facilitated spatial learning in the Morris water maze. AD transgenic mice (6.5 to 8 months of age) were treated with nanoparticle encapsulated Bryostatin-1 formulation (1, 2.5, or 5 μg/mouse) three times the week before testing and then daily for each of the 5 days of testing. Across the acquisition phase, mice treated with nanoencapsulated Bryostatin-1 had shorter latencies, increased % time in the target zone and decreased % time in the opposite quadrant. The mice were given retention testing after a 2-week period without drug treatment. Mice treated with nanoencapsulated Bryostatin-1 had shorter latencies to find the escape platform, indicating retention of spatial memory. CONCLUSION These data suggest that cognitive deficits associated with AD could be treated using highly potent nanoparticle-encapsulated formulations of Bryostatin-1.
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Affiliation(s)
- Lisa Schrott
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
| | - Ping Yi
- Tongji Medical University - Medicine Wuhan, Hubei, China
| | - Kasey Jackson
- Astellas Innovation Management LLC, Cambridge, Massachusetts, MA, United States
| | - Gabriel S Jackson
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
| | - Christopher Webb
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
| | - Alireza Minagar
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
| | - J Winny Yun
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
| | - Geoffrey Purdum
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - David J Rios
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - Theodore A Tyler
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - Maria I Vizcanio
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - Judith L Castor
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - Trevor Castor
- Aphios Corporation - R&D, Woburn, Massachusetts, MA, United States
| | - Jonathan S Alexander
- LSU Health Sciences Center in Shreveport, Shreveport, Louisiana, LA, United States
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Wu CYC, Lopez-Toledano MA, Daak AA, Clemons GA, Citadin CT, Sancilio FD, Rabinowicz AL, Minagar A, Neumann JT, Lee RHC, Lin HW. SC411 treatment can enhance survival in a mouse model of sickle cell disease. Prostaglandins Leukot Essent Fatty Acids 2020; 158:102110. [PMID: 32447175 DOI: 10.1016/j.plefa.2020.102110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 02/02/2023]
Abstract
Sickle cell disease (SCD) is one of the most common inherited blood disorder among African Americans affecting 70,000-100,000 individuals in the United States. It is characterized by abnormal hemoglobin (HbS) which develops into severe hemolytic anemia and vaso-occlusive crisis. Therefore, patients with SCD suffer from a chronic state of inflammation, which is responsible for multiple organ damage, ischemic attacks, and premature death. Another major hallmark of SCD patients is the abnormally low levels of omega-3 fatty acids, especially docosahexaenoic acid (DHA) in their red blood cell membranes. Treatment with DHA can reduce red blood cell adhesion and enhance cerebral blood flow, thus, our main goal is to investigate the effect of SC411, which is a novel, highly purified DHA ethyl ester formulation with a proprietary delivery platform in SCD. Utilizing a transgenic mouse model of SCD (HbSS-Townes) and recurrent hypoxic challenges (10%O2, 0.5% CO2 and balance N2 for 3 h) to mimic ischemic-like conditions, our data suggest that SC411 can elevate blood DHA and eicosapentaenoic acid (EPA) levels after 8 weeks of treatment. SC411 can also decrease arachidonic acid (AA) and sickling of red blood cells. In addition, SC411-treated SCD mice showed presented with cerebral blood flow, alleviated neuroinflammation, and revived working memory which ultimately enhanced overall survival. In summary, this study suggests that treatment with SC411 improves cellular and functional outcomes in SCD mice. This finding may provide novel therapeutic opportunities in the treatment against ischemic injury elicited by SCD.
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Affiliation(s)
- Celeste Y C Wu
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Hwy Shreveport, LA, USA
| | - Miguel A Lopez-Toledano
- Sancilio & Company, Inc, Stuart, FL, USA; Center of Molecular Biology and Biotechnology (CMBB), Florida Atlantic University, USA
| | - Ahmed A Daak
- Sancilio & Company, Inc, Stuart, FL, USA; Center of Molecular Biology and Biotechnology (CMBB), Florida Atlantic University, USA
| | - Garrett A Clemons
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Cristiane T Citadin
- Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Frederick D Sancilio
- Sancilio & Company, Inc, Stuart, FL, USA; Center of Molecular Biology and Biotechnology (CMBB), Florida Atlantic University, USA
| | - Adrian L Rabinowicz
- Sancilio & Company, Inc, Stuart, FL, USA; Center of Molecular Biology and Biotechnology (CMBB), Florida Atlantic University, USA
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Hwy Shreveport, LA, USA
| | - Jake T Neumann
- Deaprtment of Biomedical Sciences, West Virginia School of Osteopathic Medicine, Lewisburg, WV, USA
| | - Reggie H C Lee
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Hwy Shreveport, LA, USA
| | - Hung Wen Lin
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Hwy Shreveport, LA, USA; Department of Cellular Biology and Anatomy, Louisiana State University Health Sciences Center, Shreveport, LA, USA.
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Cananzi SG, White LA, Barzegar M, Boyer CJ, Chernyshev OY, Yun JW, Kelley RE, Almendros I, Minagar A, Farré R, Alexander JS. Obstructive sleep apnea intensifies stroke severity following middle cerebral artery occlusion. Sleep Med 2020; 67:278-285. [PMID: 32057628 DOI: 10.1016/j.sleep.2020.01.014] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/02/2020] [Accepted: 01/06/2020] [Indexed: 11/29/2022]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) is a sleep disorder caused by transient obstruction of the upper airway and results in intermittent hypoxia, sleep fragmentation, sympathetic nervous system activation, and arousal which can have an adverse effect on cardiovascular disease. It is theorized that OSA might intensify stroke injury. Our goal here was to develop a new model of experimental OSA and test its ability to aggravate behavioral and morphological outcomes following transient brain ischemia/reperfusion. METHODS We used a 3D printed OSA device to expose C57BL6 mice to 3 h of OSA (obstructive apnea index of 20 events per hour) for three days. These mice were then subjected to ischemia/reperfusion using the middle cerebral artery occlusion model (MCAO) stroke and examined for overall survival, infarct size and neurological scoring. RESULTS We found that OSA transiently decreased respiration and reduced oxygen saturation with bradycardia and tachycardia typical of human responses during apneic events. Brain injury from MCAO was significantly increased by OSA as measured by infarct size and location as well as by intensification of neurological deficits; mortality following MCAO was also increased in OSA animals. CONCLUSIONS Our findings suggest that our new model of OSA alters respiratory and cardiovascular physiological functions and is associated with enhanced ischemia/reperfusion mediated injury in our non-invasive, OSA intensified model of stroke.
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Affiliation(s)
| | - Luke A White
- Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - Mansoureh Barzegar
- Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - Christen J Boyer
- Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - Oleg Y Chernyshev
- Department of Neurology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - J Winny Yun
- Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - R E Kelley
- Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - Isaac Almendros
- Unit of Biophysics and Bioengineering. Department of Biomedicine, Faculty of Medicine and Health Sciences, C/ Casanova, 143, 08036, Barcelona, Spain
| | - Alireza Minagar
- Department of Neurology, LSU Health Sciences Center, Shreveport, LA, 71130, USA
| | - Ramon Farré
- Unit of Biophysics and Bioengineering. Department of Biomedicine, Faculty of Medicine and Health Sciences, C/ Casanova, 143, 08036, Barcelona, Spain
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Chernyshev OY, Bir SC, Maiti TK, Patra DP, Sun H, Guthikonda B, Kelley RE, Cuellar H, Minagar A, Nanda A. The Relationship Between Obstructive Sleep Apnea and Ruptured Intracranial Aneurysms. J Clin Sleep Med 2019; 15:1839-1848. [PMID: 31839111 PMCID: PMC7099178 DOI: 10.5664/jcsm.8096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 02/10/2017] [Revised: 06/02/2017] [Accepted: 07/12/2017] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES The role of obstructive sleep apnea (OSA) in the overall outcome of ruptured intracranial aneurysms (RIAs) is unknown. We have investigated the role of OSA in overall outcome of RIAs. METHODS Data from 159 consecutive patients were retrospectively reviewed. A chi-square test and regression analysis were performed to determine the significant difference. A value of P < .05 was considered significant. RESULTS The prevalence of OSA in RIAs was fivefold higher in the nonaneurysm patient group, P = .002. The number of patients with hypertension (P < .0001), body mass index ≥ 30 (P < .0001), hyperlipidemia (P = .018), chronic heart disease (P = .002) or prior ischemic stroke (P = .001) was significantly higher in the OSA group. Similarly, the number of wide-neck aneurysms (P < .0001) and aneurysm > 7 mm (P = .004), poor Hunt and Hess grade IV-V (P = .005), vasospasms, (P = .03), and patients with poor Modified Rankin Scale scores (3-6) was significantly higher in the OSA group (P < .0001). Interestingly, for the first time in univariate (P = .01) and multivariate (P = .003) regression analysis, OSA was identified as an individual predictor of unfavorable outcome of RIAs. In addition, hypertension (P = .04), smoking (P = .049), chronic heart disease (P = .01), and Hunt and Hess grade IV-V (P = .04) were revealed as predictors of poor outcome of RIAs. CONCLUSIONS This is a novel study to determine the association between OSA and ruptured cerebral aneurysm in terms of comorbidities, size of aneurysm, severity of symptoms, and outcomes after treatment. In addition, for the first time, OSA is identified as a positive predictor of unfavorable outcome of RIAs.
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Affiliation(s)
- Oleg Y Chernyshev
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
- Contributed equally
| | - Shyamal C Bir
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
- Contributed equally
| | - Tanmoy K Maiti
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Devi Prasad Patra
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Hai Sun
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Bharat Guthikonda
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Roger E Kelley
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
| | - Hugo Cuellar
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
| | - Alireza Minagar
- Department of Neurology and Sleep Medicine, LSU Health-Shreveport, Shreveport, Louisiana
| | - Anil Nanda
- Department of Neurosurgery, LSU Health-Shreveport, Shreveport, Louisiana
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Rahmanzadeh R, Brück W, Minagar A, Sahraian MA. Multiple sclerosis pathogenesis: missing pieces of an old puzzle. Rev Neurosci 2019; 30:67-83. [PMID: 29883325 DOI: 10.1515/revneuro-2018-0002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 01/13/2018] [Accepted: 03/30/2018] [Indexed: 11/15/2022]
Abstract
Traditionally, multiple sclerosis (MS) was considered to be a CD4 T cell-mediated CNS autoimmunity, compatible with experimental autoimmune encephalitis model, which can be characterized by focal lesions in the white matter. However, studies of recent decades revealed several missing pieces of MS puzzle and showed that MS pathogenesis is more complex than the traditional view and may include the following: a primary degenerative process (e.g. oligodendroglial pathology), generalized abnormality of normal-appearing brain tissue, pronounced gray matter pathology, involvement of innate immunity, and CD8 T cells and B cells. Here, we review these findings and discuss their implications in MS pathogenesis.
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Affiliation(s)
- Reza Rahmanzadeh
- MS Research Center, Neuroscience Institute, Tehran University of Medical Science, Department of Neurology, Sina Hospital, 1136746911 Tehran, Iran
| | - Wolfgang Brück
- Institute of Neuropathology, University Medical Center, D-37075 Göttingen, Germany
| | - Alireza Minagar
- Department of Neurology, LSU Health Sciences Center, Shreveport, LA 71130, USA
| | - Mohammad Ali Sahraian
- MS Research Center, Neuroscience Institute, Tehran University of Medical Science, Department of Neurology, Sina Hospital, 1136746911 Tehran, Iran.,Iranian Center for Neurological Research, Neuroscience Institute, Tehran University of Medical Science, 1136746890 Tehran, Iran
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8
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Yun JW, Barzegar M, Boyer CJ, Minagar A, Couraud PO, Alexander JS. Brain Endothelial Cells Release Apical and Basolateral Microparticles in Response to Inflammatory Cytokine Stimulation: Relevance to Neuroinflammatory Stress? Front Immunol 2019; 10:1455. [PMID: 31316509 PMCID: PMC6610500 DOI: 10.3389/fimmu.2019.01455] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/22/2019] [Accepted: 06/10/2019] [Indexed: 01/07/2023] Open
Abstract
Microparticles (MP) are regarded both as biomarkers and mediators of many forms of pathology, including neurovascular inflammation. Here, we characterized vectorial release of apical and basolateral MPs (AMPs and BMPs) from control and TNF-α/IFN-γ treated human brain endothelial monolayers, studied molecular composition of AMPs and BMPs and characterized molecular pathways regulating AMP and BMP release. The effects of AMPs and BMPs on blood-brain barrier properties and human brain microvascular smooth muscle tonic contractility in vitro were also evaluated. We report that human brain microvascular endothelial cells release MPs both apically and basolaterally with both AMP and BMP release significantly increased following inflammatory cytokine challenge (3.5-fold and 3.9-fold vs. control, respectively). AMPs and BMPs both carry proteins derived from parent cells including those in BBB junctions (Claudin−1, −3, −5, occludin, VE-cadherin). AMPs and BMPs represent distinct populations whose release appears to be regulated by distinctly separate molecular pathways, which depend on signaling from Rho-associated, coiled-coil containing protein kinase (ROCK), calpain as well as cholesterol depletion. AMPs and BMPs modulate functions of neighboring cells including BBB endothelial solute permeability and brain vascular smooth muscle contractility. While control AMPs enhanced brain endothelial barrier, cytokine-induced AMPs impaired BBB. Cytokine-induced but not control BMPs significantly impaired human brain smooth muscle contractility as early as day 1. Taken together these results indicate that AMPs and BMPs may contribute to neurovascular inflammatory disease progression both within the circulation (AMP) and in the brain parenchyma (BMP).
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Affiliation(s)
- J Winny Yun
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Mansoureh Barzegar
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Christen J Boyer
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | | | - Jonathan Steven Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, LA, United States.,Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
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Minagar A, Alexander JS. Cervical spinal cord atrophy impact on quality of life in MS: A neuroimaging study. J Neurol Sci 2019; 401:101-102. [PMID: 31075679 DOI: 10.1016/j.jns.2019.04.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Alireza Minagar
- Departments of Neurology, LSU Health Sciences Center, Shreveport, LA 71130, USA.
| | - J Steven Alexander
- Departments of Neurology, LSU Health Sciences Center, Shreveport, LA 71130, USA; Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport, LA 71130, USA
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Barzegar M, Wang Y, Yun JW, Boyer CJ, Minagar A, Gavins FN, Chernyshev OY, Kelley RE, Alexander JS. Human Placental Stem Cell Therapy in Stroke: Endothelial / Smooth Muscle Mechanisms Underlying Protection? FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.524.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mansoureh Barzegar
- Molecular and Cell PhysiologyLouisiana State University of Health Science CenterShreveportLA
| | - Yuping Wang
- MC Obstetric and GynecologyLouisiana State University of Health Science CenterShreveportLA
| | - Jungmi W. Yun
- Molecular and Cell PhysiologyLouisiana State University of Health Science CenterShreveportLA
| | - Christen J. Boyer
- Molecular and Cell PhysiologyLouisiana State University of Health Science CenterShreveportLA
| | - Alireza Minagar
- NeurologyLouisiana State University of Health Science CenterShreveportLA
| | - Felicity N.E. Gavins
- Molecular and Cell PhysiologyLouisiana State University of Health Science CenterShreveportLA
| | - Oleg Y Chernyshev
- NeurologyLouisiana State University of Health Science CenterShreveportLA
| | - Roger E Kelley
- NeurologyLouisiana State University of Health Science CenterShreveportLA
| | - Jonathan S. Alexander
- Molecular and Cell PhysiologyLouisiana State University of Health Science CenterShreveportLA
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Omura S, Sato F, Martinez NE, Park AM, Fujita M, Kennett NJ, Cvek U, Minagar A, Alexander JS, Tsunoda I. Bioinformatics Analyses Determined the Distinct CNS and Peripheral Surrogate Biomarker Candidates Between Two Mouse Models for Progressive Multiple Sclerosis. Front Immunol 2019; 10:516. [PMID: 30941144 PMCID: PMC6434997 DOI: 10.3389/fimmu.2019.00516] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 12/27/2018] [Accepted: 02/26/2019] [Indexed: 02/05/2023] Open
Abstract
Previously, we have established two distinct progressive multiple sclerosis (MS) models by induction of experimental autoimmune encephalomyelitis (EAE) with myelin oligodendrocyte glycoprotein (MOG) in two mouse strains. A.SW mice develop ataxia with antibody deposition, but no T cell infiltration, in the central nervous system (CNS), while SJL/J mice develop paralysis with CNS T cell infiltration. In this study, we determined biomarkers contributing to the homogeneity and heterogeneity of two models. Using the CNS and spleen microarray transcriptome and cytokine data, we conducted computational analyses. We identified up-regulation of immune-related genes, including immunoglobulins, in the CNS of both models. Pro-inflammatory cytokines, interferon (IFN)-γ and interleukin (IL)-17, were associated with the disease progression in SJL/J mice, while the expression of both cytokines was detected only at the EAE onset in A.SW mice. Principal component analysis (PCA) of CNS transcriptome data demonstrated that down-regulation of prolactin may reflect disease progression. Pattern matching analysis of spleen transcriptome with CNS PCA identified 333 splenic surrogate markers, including Stfa2l1, which reflected the changes in the CNS. Among them, we found that two genes (PER1/MIR6883 and FKBP5) and one gene (SLC16A1/MCT1) were also significantly up-regulated and down-regulated, respectively, in human MS peripheral blood, using data mining.
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Affiliation(s)
- Seiichi Omura
- Department of Microbiology, Kindai University Faculty of Medicine, Osakasayama, Japan.,Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Fumitaka Sato
- Department of Microbiology, Kindai University Faculty of Medicine, Osakasayama, Japan.,Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Nicholas E Martinez
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Ah-Mee Park
- Department of Microbiology, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Mitsugu Fujita
- Department of Microbiology, Kindai University Faculty of Medicine, Osakasayama, Japan
| | - Nikki J Kennett
- Department of Pathology, University of Utah, Salt Lake City, UT, United States
| | - Urška Cvek
- Department of Computer Science, Louisiana State University Shreveport, Shreveport, LA, United States
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - J Steven Alexander
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States.,Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Ikuo Tsunoda
- Department of Microbiology, Kindai University Faculty of Medicine, Osakasayama, Japan.,Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States.,Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
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12
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Omura S, Kawai E, Sato F, Martinez NE, Minagar A, Al-Kofahi M, Yun JW, Cvek U, Trutschl M, Alexander JS, Tsunoda I. Theiler's Virus-Mediated Immunopathology in the CNS and Heart: Roles of Organ-Specific Cytokine and Lymphatic Responses. Front Immunol 2018; 9:2870. [PMID: 30619258 PMCID: PMC6295469 DOI: 10.3389/fimmu.2018.02870] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 09/28/2018] [Accepted: 11/21/2018] [Indexed: 02/05/2023] Open
Abstract
Theiler's murine encephalomyelitis virus (TMEV) induces different diseases in the central nervous system (CNS) and heart, depending on the mouse strains and time course, with cytokines playing key roles for viral clearance and immune-mediated pathology (immunopathology). In SJL/J mice, TMEV infection causes chronic TMEV-induced demyelinating disease (TMEV-IDD) in the spinal cord about 1 month post-inoculation (p.i.). Unlike other immunopathology models, both pro- and anti-inflammatory cytokines can play dual roles in TMEV-IDD. Pro-inflammatory cytokines play beneficial roles in viral clearance while they are also detrimental in immune-mediated demyelination. Anti-inflammatory cytokines suppress not only protective anti-viral immune responses but also detrimental autoreactive immune responses. Conversely, in C3H mice, TMEV infection induces a non-CNS disease, myocarditis, with three distinctive phases: phase I, viral pathology with interferon and chemokine responses; phase II, immunopathology mediated by acquired immune responses; and phase III, cardiac fibrosis. Although the exact mechanism(s) by which a single virus, TMEV, induces these different diseases in different organs is unclear, our bioinformatics approaches, especially principal component analysis (PCA) of transcriptome data, allow us to identify the key factors contributing to organ-specific immunopathology. The PCA demonstrated that in vitro infection of a cardiomyocyte cell line reproduced the transcriptome profile of phase I in TMEV-induced myocarditis; distinct interferon/chemokine-related responses were induced in vitro in TMEV-infected cardiomyocytes, but not in infected neuronal cells. In addition, the PCA of the in vivo CNS transcriptome data showed that decreased lymphatic marker expressions were weakly associated with inflammation in TMEV infection. Here, dysfunction of lymphatic vessels is shown to potentially contribute to immunopathology by delaying the clearance of cytokines and immune cells from the inflammatory site, although this can also confine the virus at these sites, preventing virus spread via lymphatic vessels. On the other hand, in the heart, dysfunction of lymphatics was associated with reduced lymphatic muscle contractility provoked by pro-inflammatory cytokines. Therefore, TMEV infection may induce different patterns of cytokine expressions as well as lymphatic vessel dysfunction by rather different mechanisms between the CNS and heart, which might explain observed patterns of organ-specific immunopathology.
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Affiliation(s)
- Seiichi Omura
- Department of Microbiology, Kindai University Faculty of Medicine, Osaka, Japan.,Department of Microbiology and Immunology, Center for Molecular and Tumor Virology, Center for Cardiovascular Diseases and Sciences, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Eiichiro Kawai
- Department of Microbiology and Immunology, Center for Molecular and Tumor Virology, Center for Cardiovascular Diseases and Sciences, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Fumitaka Sato
- Department of Microbiology, Kindai University Faculty of Medicine, Osaka, Japan.,Department of Microbiology and Immunology, Center for Molecular and Tumor Virology, Center for Cardiovascular Diseases and Sciences, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Nicholas E Martinez
- Department of Microbiology and Immunology, Center for Molecular and Tumor Virology, Center for Cardiovascular Diseases and Sciences, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Mahmoud Al-Kofahi
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - J Winny Yun
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Urska Cvek
- Department of Computer Science, Louisiana State University Shreveport, Shreveport, LA, United States
| | - Marjan Trutschl
- Department of Computer Science, Louisiana State University Shreveport, Shreveport, LA, United States
| | - J Steven Alexander
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States.,Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
| | - Ikuo Tsunoda
- Department of Microbiology, Kindai University Faculty of Medicine, Osaka, Japan.,Department of Microbiology and Immunology, Center for Molecular and Tumor Virology, Center for Cardiovascular Diseases and Sciences, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States.,Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, United States
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13
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McGee JC, Minagar A. Medical students and brain death: An educational initiative. Clin Neurol Neurosurg 2018; 170:116. [DOI: 10.1016/j.clineuro.2018.04.031] [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] [Received: 02/11/2018] [Accepted: 04/28/2018] [Indexed: 10/17/2022]
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14
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McGee JC, Minagar A. Neuromyelitis optica spectrum disorder in the very young: An in depth review of the present data. J Neurol Sci 2018; 388:232. [DOI: 10.1016/j.jns.2018.02.027] [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] [Received: 02/11/2018] [Accepted: 02/16/2018] [Indexed: 10/18/2022]
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15
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Doosti R, Togha M, Moghadasi AN, Aghsaie A, Azimi AR, Khorramnia S, Moinfar Z, Ensani F, Harirchian MH, Minagar A, Sahraian MA. Evaluation of the risk of cervical cancer in patients with Multiple Sclerosis treated with cytotoxic agents: A cohort study. Iran J Neurol 2018; 17:64-70. [PMID: 30210730 PMCID: PMC6131331] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background: Since most patients with relapsing-remitting multiple sclerosis (RRMS) are women, the present study aimed to determine whether treatment of patients with MS by cytotoxic agents is associated with an increased risk of cervical dysplasia. Cancer screening is often neglected in the chronic diseases such as MS, so more attention in this field was needed. Decreasing morbidity and mortality due to cervical cancer is the most important goal of screening in female MS patients especially in child bearing age. Thus, it can be said that this is the first study which investigated this important issue. Methods: A total of 129 individuals participated in this cohort study. They were assigned into 3 groups including 43 patients with MS who were treated with cytotoxic drugs, 43 patients with MS on immunomodulators, and 43 normal healthy controls. Pap smears were performed following standard methods and the results obtained from the three groups were compared by statistical analysis. Demographic data, Expanded Disability Status Scale (EDSS), and Pap smear changes were analyzed by SPSS software. Results: The most commonly detected abnormality in all examined patients and healthy controls was inflammation. Five patients with MS who were treated with cytotoxic agents revealed benign cellular changes (BCC) in their Pap smear that were statistically significant in comparison with other groups (P = 0.03). Patients who took Mitoxantrone presented BCC more than other groups [Odds ratio (OR) = 9.44, 95% confidence interval (CI): 1.46-60.70]. There was no significant difference between mean duration of MS diagnosis (P = 0.12), mean duration of previous MS treatments (P = 0.25), and mean duration of current MS treatments (P = 0.21) in patients with BCC compared to normal healthy controls or inflammatory change. Conclusion: According to the results of present study, BCC is more frequently observed in patients with MS who were treated with cytotoxic agents with immunosuppressive effect. Since BCC is a 'premalignant condition', the authors suggest that mandatory annual Pap smear should be performed for patients with MS who are treated with cytotoxic agents irrespective of their age in order to detect early signs of malignancy.
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Affiliation(s)
- Rozita Doosti
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mansoureh Togha
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran, Department of Neurology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Abdorreza Naser Moghadasi
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran, Department of Neurology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Aida Aghsaie
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Reza Azimi
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran, Department of Neurology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeideh Khorramnia
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Moinfar
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Fereshteh Ensani
- Department of Pathology, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Harirchian
- Iranian Center for Neurological Research, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Mohammad Ali Sahraian
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran, Iranian Center for Neurological Research, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
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16
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Barzegar M, Minagar A, Wang Y, Yun WJ, Boyer C, Cananzi SG, Alexander SJ. Human Placental Stem Cell Therapy in Stroke: Endothelial/Smooth Muscle Mechanisms Underlying Protection. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.575.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mansoureh Barzegar
- Molecular and Cell PhysiologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Alireza Minagar
- NeurologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Yuping Wang
- MC Obstetrics & GynecologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Winny Jungmi Yun
- Molecular and Cell PhysiologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Christen Boyer
- Molecular and Cell PhysiologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Sergio Giuseppe Cananzi
- Molecular and Cell PhysiologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
| | - Steven Jonathan Alexander
- Molecular and Cell PhysiologyLouisiana State University of Health Science Center‐ShreveportShreveportLA
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17
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Yun JW, Boyer C, Minagar A, Alexander JS. Brain Microvascular Endothelial Derived Microparticles as a Non‐Invasive Diagnostic Tool for Multiple Sclerosis. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.710.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- J. Winny Yun
- PhysiologyLSU Health Sciences Center‐ShreveportShreveportLA
| | - Chris Boyer
- PhysiologyLSU Health Sciences Center‐ShreveportShreveportLA
| | | | - J. Steven Alexander
- PhysiologyLSU Health Sciences Center‐ShreveportShreveportLA
- NeurologyLSU Health Sciences Center‐ShreveportShreveportLA
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18
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Abstract
Cerebral ischemia is one of the leading causes of morbidity and mortality worldwide. Although stroke (a form of cerebral ischemia)-related costs are expected to reach 240.67 billion dollars by 2030, options for treatment against cerebral ischemia/stroke are limited. All therapies except anti-thrombolytics (i.e., tissue plasminogen activator) and hypothermia have failed to reduce neuronal injury, neurological deficits, and mortality rates following cerebral ischemia, which suggests that development of novel therapies against stroke/cerebral ischemia are urgently needed. Here, we discuss the possible mechanism(s) underlying cerebral ischemia-induced brain injury, as well as current and future novel therapies (i.e., growth factors, nicotinamide adenine dinucleotide, melatonin, resveratrol, protein kinase C isozymes, pifithrin, hypothermia, fatty acids, sympathoplegic drugs, and stem cells) as it relates to cerebral ischemia.
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Affiliation(s)
- Reggie H. C. Lee
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
- Center for Brain Health, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Michelle H. H. Lee
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan, China
| | - Celeste Y. C. Wu
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
- Center for Brain Health, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Alexandre Couto e Silva
- Department of Cellular Biology and Anatomy, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Harlee E. Possoit
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
- Center for Brain Health, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Tsung-Han Hsieh
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
- Center for Brain Health, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
| | - Hung Wen Lin
- Department of Neurology, Louisiana State University Health Science Center, Shreveport, LA, USA
- Center for Brain Health, Louisiana State University Health Science Center, Shreveport, LA, USA
- Department of Cellular Biology and Anatomy, Louisiana State University Health Science Center, Shreveport, LA, USA
- Cardiovascular and Metabolomics Research Center, Hualien Tzu Chi Hospital, Hualien, Taiwan, China
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19
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Bir SC, Konar SK, Patra DP, Maiti TK, Minagar A, Nanda A. Management of a complex intracranial arteriovenous malformation with gamma knife radiosurgery: A case report with review of literature. J Clin Neurosci 2018; 49:26-31. [DOI: 10.1016/j.jocn.2017.10.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 10/23/2017] [Indexed: 11/25/2022]
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20
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Omura S, Sato F, Martinez NE, Range T, Ekshyyan L, Minagar A, Alexander JS, Tsunoda I. Immunoregulation of Theiler's virus-induced demyelinating disease by glatiramer acetate without suppression of antiviral immune responses. Arch Virol 2018; 163:1279-1284. [PMID: 29362931 DOI: 10.1007/s00705-018-3729-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/03/2018] [Indexed: 02/05/2023]
Abstract
While most disease-modifying drugs (DMDs) regulate multiple sclerosis (MS) by suppressing inflammation, they can potentially suppress antiviral immunity, causing progressive multifocal leukoencephalopathy (PML). The DMD glatiramer acetate (GA) has been used for MS patients who are at high risk of PML. We investigated whether GA is safe for use in viral infections by using a model of MS induced by infection with Theiler's murine encephalomyelitis virus (TMEV). Treatment of TMEV-infected mice with GA neither enhanced viral loads nor suppressed antiviral immune responses, while it resulted in an increase in the Foxp3/Il17a ratio and IL-4/IL-10 production. This is the first study to suggest that GA could be safe for MS patients with a proven viral infection.
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Affiliation(s)
- Seiichi Omura
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Department of Microbiology, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Fumitaka Sato
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Department of Microbiology, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Nicholas E Martinez
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Tierra Range
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Lesya Ekshyyan
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - J Steven Alexander
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.,Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Ikuo Tsunoda
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA. .,Center for Molecular and Tumor Virology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA. .,Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA. .,Department of Microbiology, Kindai University Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan.
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21
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Wu CYC, Lerner FM, Couto E Silva A, Possoit HE, Hsieh TH, Neumann JT, Minagar A, Lin HW, Lee RHC. Utilizing the Modified T-Maze to Assess Functional Memory Outcomes After Cardiac Arrest. J Vis Exp 2018:56694. [PMID: 29364254 PMCID: PMC5908446 DOI: 10.3791/56694] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2024] Open
Abstract
BACKGROUND Evaluating mild to moderate cognitive impairment in a global cerebral ischemia (i.e. cardiac arrest) model can be difficult due to poor locomotion after surgery. For example, rats who undergo surgical procedures and are subjected to the Morris water maze may not be able to swim, thus voiding the experiment. New Method: We established a modified behavioral spontaneous alternation T-maze test. The major advantage of the modified T-maze protocol is its relatively simple design that is powerful enough to assess functional learning/memory after ischemia. Additionally, the data analysis is simple and straightforward. We used the T-maze to determine the rats' learning/memory deficits both in the presence or absence of mild to moderate (6 min) asphyxial cardiac arrest (ACA). Rats have a natural tendency for exploration and will explore the alternate arms in the T-maze, whereas hippocampal-lesioned rats tend to adopt a side-preference resulting in decreased spontaneous alternation ratios, revealing the hippocampal-related functional learning/memory in the presence or absence of ACA. RESULTS ACA groups have higher side-preference ratios and lower alternations as compared to control. Comparison with Existing Method(s): The Morris water and Barnes maze are more prominent for assessing learning/memory function. However, the Morris water maze is more stressful than other mazes. The Barnes maze is widely used to measure reference (long-term) memory, while ACA-induced neurocognitive deficits are more closely related to working (short-term) memory. CONCLUSIONS We have developed a simple, yet effective strategy to delineate working (short-term) memory via the T-maze in our global cerebral ischemia model (ACA).
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Affiliation(s)
- Celeste Y C Wu
- Department of Neurology, Louisiana State University Health Science Center; Center for Brain Health, Louisiana State University Health Science Center
| | - Francesca M Lerner
- Department of Neurology, Cerebral Vascular Disease Research Laboratories, University of Miami Miller School of Medicine
| | - Alexandre Couto E Silva
- Department of Cellular Biology and Anatomy, Louisiana State University Health Science Center
| | - Harlee E Possoit
- Department of Neurology, Louisiana State University Health Science Center; Center for Brain Health, Louisiana State University Health Science Center
| | - Tsung-Han Hsieh
- Department of Neurology, Louisiana State University Health Science Center; Center for Brain Health, Louisiana State University Health Science Center
| | - Jake T Neumann
- Department of Biomedical Sciences, West Virginia School of Osteopathic Medicine
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Science Center
| | - Hung Wen Lin
- Department of Neurology, Louisiana State University Health Science Center; Center for Brain Health, Louisiana State University Health Science Center; Department of Cellular Biology and Anatomy, Louisiana State University Health Science Center
| | - Reggie H C Lee
- Department of Neurology, Louisiana State University Health Science Center; Center for Brain Health, Louisiana State University Health Science Center;
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22
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McGee JC, Minagar A. A case of neuromyelitis optica spectrum disorder presenting with undiagnosed Sjogren's syndrome and a single, atypical tumefactive lesion: A diagnostic challenge. J Neurol Sci 2017; 383:219-220. [DOI: 10.1016/j.jns.2017.10.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 10/26/2017] [Indexed: 11/17/2022]
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23
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Connor DE, Chaitanya GV, Chittiboina P, McCarthy P, Scott LK, Schrott L, Minagar A, Nanda A, Alexander JS. Variations in the cerebrospinal fluid proteome following traumatic brain injury and subarachnoid hemorrhage. Pathophysiology 2017; 24:169-183. [PMID: 28549769 PMCID: PMC7303909 DOI: 10.1016/j.pathophys.2017.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 04/06/2017] [Accepted: 04/28/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Proteomic analysis of cerebrospinal fluid (CSF) has shown great promise in identifying potential markers of injury in neurodegenerative diseases [1-13]. Here we compared CSF proteomes in healthy individuals, with patients diagnosed with traumatic brain injury (TBI) and subarachnoid hemorrhage (SAH) in order to characterize molecular biomarkers which might identify these different clinical states and describe different molecular mechanisms active in each disease state. METHODS Patients presenting to the Neurosurgery service at the Louisiana State University Hospital-Shreveport with an admitting diagnosis of TBI or SAH were prospectively enrolled. Patients undergoing CSF sampling for diagnostic procedures were also enrolled as controls. CSF aliquots were subjected to 2-dimensional gel electrophoresis (2D GE) and spot percentage densities analyzed. Increased or decreased spot expression (compared to controls) was defined in terms of in spot percentages, with spots showing consistent expression change across TBI or SAH specimens being followed up by Matrix-Assisted Laser Desorption/Ionization mass spectrometry (MALDI-MS). Polypeptide masses generated were matched to known standards using a search of the NCBI and/or GenPept databases for protein matches. Eight hundred fifteen separately identifiable polypeptide migration spots were identified on 2D GE gels. MALDI-MS successfully identified 13 of 22 selected 2D GE spots as recognizable polypeptides. RESULTS Statistically significant changes were noted in the expression of fibrinogen, carbonic anhydrase-I (CA-I), peroxiredoxin-2 (Prx-2), both α and β chains of hemoglobin, serotransferrin (Tf) and N-terminal haptoglobin (Hp) in TBI and SAH specimens, as compared to controls. The greatest mean fold change among all specimens was seen in CA-I and Hp at 30.7 and -25.7, respectively. TBI specimens trended toward greater mean increases in CA-I and Prx-2 and greater mean decreases in Hp and Tf. CONCLUSIONS Consistent CSF elevation of CA-I and Prx-2 with concurrent depletion of Hp and Tf may represent a useful combination of biomarkers for the prediction of severity and prognosis following brain injury.
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Affiliation(s)
- David E Connor
- Baptist Health Neurosurgery Arkansas, Little Rock, AR, United States.
| | - Ganta V Chaitanya
- Cardiovascular Research Center, University of Virginia, Charlottesville, VA, United States.
| | - Prashant Chittiboina
- Surgical Neurology Branch, National Institute of Neurological Diseases and Stroke, Bethesda, MD, United States.
| | - Paul McCarthy
- Department of Medicine, Sect. of Nephrology, University of Maryland, Baltimore, MD, United States.
| | - L Keith Scott
- Department of Critical Care Medicine, Louisiana State University Health Sciences Center-Shreveport, LA, United States.
| | - Lisa Schrott
- Department of Pharmacology, Toxicology and Neuroscience, Louisiana State University Health Sciences Center-Shreveport, LA, United States.
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center-Shreveport, LA, United States.
| | - Anil Nanda
- Department of Neurosurgery, Louisiana State University Health Sciences Center-Shreveport, LA, United States.
| | - J Steven Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center-Shreveport, LA, United States.
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24
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Bir SC, Nanda A, Patra DP, Maiti TK, Liendo C, Minagar A, Chernyshev OY. Atypical presentation and outcome of cervicogenic headache in patients with cervical degenerative disease: A single-center experience. Clin Neurol Neurosurg 2017; 159:62-69. [DOI: 10.1016/j.clineuro.2017.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/05/2017] [Accepted: 05/09/2017] [Indexed: 11/16/2022]
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25
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Affiliation(s)
- Mahmoud Al-Kofahi
- Department of Experimental and Clinical Pharmacology; College of Pharmacy; University of Minnesota; Minneapolis MN USA
| | - J. Winny Yun
- Department of Molecular and Cellular Physiology; Louisiana State University Health Sciences Center Shreveport; Shreveport LA USA
| | - Alireza Minagar
- Department of Neurology; Louisiana State University Health Sciences Center Shreveport; Shreveport LA USA
| | - J. Steven Alexander
- Department of Molecular and Cellular Physiology; Louisiana State University Health Sciences Center Shreveport; Shreveport LA USA
- Department of Neurology; Louisiana State University Health Sciences Center Shreveport; Shreveport LA USA
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26
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Jakimovski D, Weinstock-Guttman B, Ramanathan M, Kolb C, Hojnacki D, Minagar A, Zivadinov R. Ocrelizumab: a B-cell depleting therapy for multiple sclerosis. Expert Opin Biol Ther 2017; 17:1163-1172. [PMID: 28658986 DOI: 10.1080/14712598.2017.1347632] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Multiple sclerosis (MS) is the most common neurological disease responsible for early disability in the young working population. In the last two decades, based on retrospective/prospective data, the use of disease-modifying therapies has been shown to slow the rate of disability progression and prolonged the time to conversion into secondary-progressive MS (SPMS). However, despite the availability of several approved therapies, disability progression cannot be halted significantly in all MS patients. Areas covered: This article reviews the immunopathology of the B-cells, and their role in pathogenesis of MS and their attractiveness as a potential therapeutic target in MS. The review focuses on the recently published ocrelizumab phase III trials in terms of its efficacy, safety, and tolerability as well as its future considerations. Expert opinion: B lymphocyte cell depletion therapy offers a compelling and promising new option for MS patients. Nonetheless, there is a need for heightened vigilance and awareness in detecting potential long-term consequences that currently remain unknown.
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Affiliation(s)
- Dejan Jakimovski
- a Buffalo Neuroimaging Analysis Center, Department of Neurology , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
| | - Bianca Weinstock-Guttman
- b Jacobs MS Center, Department of Neurology , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
| | - Murali Ramanathan
- c Department of Pharmaceutical Sciences , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
| | - Channa Kolb
- b Jacobs MS Center, Department of Neurology , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
| | - David Hojnacki
- b Jacobs MS Center, Department of Neurology , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
| | - Alireza Minagar
- d Department of Neurology , Louisiana State University Health Sciences Center , Shreveport , LA , USA
| | - Robert Zivadinov
- a Buffalo Neuroimaging Analysis Center, Department of Neurology , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA.,e Translational Imaging Center at Clinical Translational Science Institute , Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York , Buffalo , NY , USA
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Bir SC, Nanda A, Cuellar H, Liendo C, Minagar A, Chernyshev OY. 1018 RUPTURED CEREBRAL ANEURYSM AND OBSTRUCTIVE SLEEP APNEA: IS ANY LINK THERE? Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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McGee JC, Minagar A. Study of SOCS gene family expression profile in MS patients: Another step forward. J Neurol Sci 2017; 375:479-480. [PMID: 28259352 DOI: 10.1016/j.jns.2017.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 02/07/2017] [Indexed: 10/20/2022]
Affiliation(s)
- Jeanie C McGee
- Dept. Neurology, LSU Health Sciences Center, Shreveport, LA 71130, United States
| | - Alireza Minagar
- Dept. Neurology, LSU Health Sciences Center, Shreveport, LA 71130, United States.
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Bir SC, Nanda A, Cuellar H, Sun H, Guthikonda B, Liendo C, Minagar A, Chernyshev OY. Coexistence of obstructive sleep apnea worsens the overall outcome of intracranial aneurysm: a pioneer study. J Neurosurg 2017; 128:735-746. [PMID: 28338434 DOI: 10.3171/2016.10.jns162316] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Obstructive sleep apnea (OSA) is associated with the progression of abdominal and thoracic aortic aneurysms. However, the role of OSA in the overall outcome of intracranial aneurysms (IAs) has not yet been established. Authors of this report investigated the role of OSA in the overall outcome of IAs. METHODS Radiological and clinical data on patients (from 2010 through 2015) with confirmed IA were retrospectively reviewed. Significant differences between the OSA and non-OSA groups were determined using a chi-square test. Logistic regression analysis was performed to identify the predictors of an unfavorable IA outcome. RESULTS Among the 283 patients with confirmed IAs, 45 patients (16%) were positively screened for OSA, a proportion that was significantly higher than the prevalence of OSA in nonaneurysmal neurosurgical patients (4%, p = 0.008). The percentage of patients with hypertension (p = 0.018), a body mass index ≥ 30 kg/m2 (p < 0.0001), hyperlipidemia (p = 0.034), diabetes mellitus (p = 0.005), chronic heart disease (CHD; p = 0.024), or prior stroke (p = 0.03) was significantly higher in the OSA group than in the non-OSA group. Similarly, the percentage of wide-necked aneurysms (p = 0.00001) and patients with a poor Hunt and Hess Grade IV-V (p = 0.01) was significantly higher in the OSA group than in the non-OSA group. In addition, the percentage of ruptured aneurysms (p = 0.03) and vasospasms (p = 0.03) was significantly higher in the OSA group. The percentage of patients with poor modified Rankin Scale (mRS) scores (3-6) was significantly higher in the OSA group (p = 0.03). A separate cohort of patients with ruptured IAs showed similar results. In both univariate (p = 0.01) and multivariate (p = 0.04) regression analyses, OSA was identified as an individual predictor of an unfavorable outcome. In addition, hypertension and prior stroke were revealed as predictors of a poor IA outcome. CONCLUSIONS Complications of IA such as rupture and vasospasm are often the consequence of uncontrolled OSA. Overall outcome (mRS) of IAs is also affected by the co-occurrence of OSA. Therefore, the coexistence of OSA with IA affects the outcome of IAs. Obstructive sleep apnea is a risk factor for a poor outcome in IA patients.
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Affiliation(s)
| | - Anil Nanda
- 2Neurosurgery, LSU Health-Shreveport, Louisiana
| | | | - Hai Sun
- 2Neurosurgery, LSU Health-Shreveport, Louisiana
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Bir S, Nanda A, Cuellar H, Sun H, Liendo C, Minagar A, Chernyshev O. Abstract WP84: Obstructive Sleep Apnea May Worsen the Overall Outcome of Intracranial Aneurysms. Stroke 2017. [DOI: 10.1161/str.48.suppl_1.wp84] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Obstructive sleep apnea (OSA) is associated with the progression of abdominal and thoracic aortic aneurysms. However, the role of OSA in the overall outcome of intracranial aneurysms (IAs) has not yet been established. We have investigated the role of OSA in the progression and outcome of intracranial aneurysms.
Methods:
Radiological and clinical data of 283 patients (from 2010 through 2015) were retrospectively reviewed. Significant differences between the OSA and non-OSA groups were determined by a chi-square test. Logistic regression analysis was performed to identify the predictors of unfavorable outcome.
Results:
Among the 283 patients with IAs, 45 (16%) patients were positively screened for OSA, a proportion that was significantly higher than the prevalence of OSA in the general population (4%), p=0.008. Number of patients with hypertension (p=0.018), BMI ≥ 30 (p<0.0001), hyperlipidemia (p=0.034), diabetes mellitus (DM, p=0.005), chronic heart disease (CHD, p=0.024), cerebrovascular accident (CVA, p=0.03) was significantly higher in the OSA group compared to the non-OSA group. Similarly, the number of wide neck aneurysms (p=0.00001) and poor Hunt and Hess grade 4-5 (p=0.01) was significantly higher in the OSA group compared to the non-OSA group. In addition, the number of ruptured aneurysms (p=0.03) and vasospasms (p=0.02) was significantly higher in the OSA group. The number of the patients with poor modified Rankin scale (mRS) scores (3-6) was significantly higher in the OSA group (p=0.03). Both in univariate (p=0.01) and multivariate (p=0.04) regression analysis, OSA was identified as an individual predictor of unfavorable outcome. In addition, hypertension, smoking, CHD and CVA were revealed as positive predictors of poor outcome of IAs.
Conclusions:
The complications of IAs such as rupture and vasospasms are influenced by presence of OSA. Overall outcome (mRS) of IAs is also affected by the concurrence of OSA. Therefore, coexistence of OSA in patients with IAs affects progression as well as outcome of IAs. Lastly, OSA serves as an individual risk factor for poor outcome in these patients.
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Affiliation(s)
- Shyamal Bir
- Neurosurgery, LSU Health Sciences Cntr, Shreveport, LA
| | - Anil Nanda
- Neurosurgery, LSU Health Sciences Cntr, Shreveport, LA
| | - Hugo Cuellar
- Neurosurgery, LSU Health Sciences Cntr, Shreveport, LA
| | - Hai Sun
- Neurosurgery, LSU Health Sciences Cntr, Shreveport, LA
| | - Cesar Liendo
- Neurology, LSU Health Sciences Cntr, Shreveport, LA
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Hussein O, Cajavilca C, Aachi R, Minagar A. NEW INSIGHTS ON NEUROMYELITIS OPTICA. J Neurol Psychiatry 2016. [DOI: 10.1136/jnnp-2016-315106.134] [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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Lee RH, Couto E Silva A, Lerner FM, Wilkins CS, Valido SE, Klein DD, Wu CY, Neumann JT, Della-Morte D, Koslow SH, Minagar A, Lin HW. Interruption of perivascular sympathetic nerves of cerebral arteries offers neuroprotection against ischemia. Am J Physiol Heart Circ Physiol 2016; 312:H182-H188. [PMID: 27864234 DOI: 10.1152/ajpheart.00482.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 07/08/2016] [Revised: 11/11/2016] [Accepted: 11/16/2016] [Indexed: 11/22/2022]
Abstract
Sympathetic nervous system activity is increased after cardiopulmonary arrest, resulting in vasoconstrictor release from the perivascular sympathetic nerves of cerebral arteries. However, the pathophysiological function of the perivascular sympathetic nerves in the ischemic brain remains unclear. A rat model of global cerebral ischemia (asphyxial cardiac arrest, ACA) was used to investigate perivascular sympathetic nerves of cerebral arteries via bilateral decentralization (preganglionic lesion) of the superior cervical ganglion (SCG). Decentralization of the SCG 5 days before ACA alleviated hypoperfusion and afforded hippocampal neuroprotection and improved functional outcomes. These studies can provide further insights into the functional mechanism(s) of the sympathetic nervous system during ischemia. NEW & NOTEWORTHY Interruption of the perivascular sympathetic nerves can alleviate CA-induced hypoperfusion and neuronal cell death in the CA1 region of the hippocampus to enhance functional learning and memory.
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Affiliation(s)
- Reggie H Lee
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Alexandre Couto E Silva
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Francesca M Lerner
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Carl S Wilkins
- Florida International University Herbert Wertheim College of Medicine, Miami, Florida
| | - Stephen E Valido
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Daniel D Klein
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - Celeste Y Wu
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Jake T Neumann
- Department of Biomedical Sciences, West Virginia School of Osteopathic Medicine, Lewisburg, West Virginia
| | - David Della-Morte
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Department of Systems Medicine, University of Rome Tor Vergata; and.,IRCCS San Raffaele Pisana, Rome, Italy
| | - Stephen H Koslow
- Department of Psychiatry and Behavioral Sciences, University of Miami Miller School of Medicine, Miami, Florida
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Hung Wen Lin
- Cerebral Vascular Disease Laboratories, University of Miami Miller School of Medicine, Miami, Florida; .,Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida.,Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
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White LA, Stevenson EV, Yun JW, Eshaq R, Harris NR, Mills DK, Minagar A, Couraud PO, Alexander JS. The Assembly and Application of 'Shear Rings': A Novel Endothelial Model for Orbital, Unidirectional and Periodic Fluid Flow and Shear Stress. J Vis Exp 2016. [PMID: 27842359 DOI: 10.3791/54632] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Deviations from normal levels and patterns of vascular fluid shear play important roles in vascular physiology and pathophysiology by inducing adaptive as well as pathological changes in endothelial phenotype and gene expression. In particular, maladaptive effects of periodic, unidirectional flow induced shear stress can trigger a variety of effects on several vascular cell types, particularly endothelial cells. While by now endothelial cells from diverse anatomic origins have been cultured, in-depth analyses of their responses to fluid shear have been hampered by the relative complexity of shear models (e.g., parallel plate flow chamber, cone and plate flow model). While these all represent excellent approaches, such models are technically complicated and suffer from drawbacks including relatively lengthy and complex setup time, low surface areas, requirements for pumps and pressurization often requiring sealants and gaskets, creating challenges to both maintenance of sterility and an inability to run multiple experiments. However, if higher throughput models of flow and shear were available, greater progress on vascular endothelial shear responses, particularly periodic shear research at the molecular level, might be more rapidly advanced. Here, we describe the construction and use of shear rings: a novel, simple-to-assemble, and inexpensive tissue culture model with a relatively large surface area that easily allows for a high number of experimental replicates in unidirectional, periodic shear stress studies on endothelial cells.
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Affiliation(s)
- Luke A White
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport
| | - Emily V Stevenson
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport
| | - J Winny Yun
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport
| | - Randa Eshaq
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport
| | - Norman R Harris
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport
| | | | - Alireza Minagar
- Neurology, Louisiana State University Health Sciences Center in Shreveport
| | | | - J Steven Alexander
- Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport;
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Maghzi H, Shaygannejad V, Minagar A, Hassanzadeh A, Maghzi AH. Consanguinity and multiple sclerosis susceptibility: A case control study. Mult Scler Relat Disord 2016; 10:179-180. [PMID: 27919486 DOI: 10.1016/j.msard.2016.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 04/21/2016] [Revised: 09/13/2016] [Accepted: 09/30/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Several lines of evidence point towards the importance of genetic risk factors in the susceptibility to multiple sclerosis (MS). We aimed to compare the rates of consanguineous marriages between first cousins among parents of MS patients and a healthy unrelated control group. METHOD This study is a cross-sectional hospital registry based study, which was performed by analyzing the clinical records of patients registered with the Kashani hospital database, and also a control group of randomly selected healthy individuals. RESULT MS patients were significantly less an offspring of a consanguineous union than the control group (MS patients=26.1%, vs Control=32.7%, p=0.03; OR=0.730 95%CI: 0.55-0.97) CONCLUSION: Offspring of consanguineous unions seems to have a lower risk of MS compared to offspring of unrelated parents. This may have implications for inheritance mode of protective alleles in MS.
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Affiliation(s)
- Helia Maghzi
- Department of Neurology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Vahid Shaygannejad
- Department of Neurology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Akbar Hassanzadeh
- Department of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Amir-Hadi Maghzi
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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Yun JW, Xiao A, Tsunoda I, Minagar A, Alexander JS. From trash to treasure: The untapped potential of endothelial microparticles in neurovascular diseases. Pathophysiology 2016; 23:265-274. [PMID: 27531185 DOI: 10.1016/j.pathophys.2016.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 05/27/2016] [Revised: 08/04/2016] [Accepted: 08/12/2016] [Indexed: 02/08/2023] Open
Abstract
Discovered in 1947, microparticles (MP) represent a group of sub-micron cell-derived particles isolated by high speed centrifugation. Once regarded as cellular 'trash', in the past decade MP have gained tremendous attention in both basic sciences and medical research both as biomarkers and mediators of infection, injury and response to therapy. Because MP bear cell surface markers derived from parent cells, accumulate in extracellular fluids (plasma, serum, milk, urine, cerebrospinal fluid) MP based tests are being developed commercially as important components in 'liquid biopsy' approaches, providing valuable readouts in cardiovascular disease and cancer, as well as stroke, Alzheimer's disease and Multiple Sclerosis. Importantly, MP have been reported as mobile transport vectors in the intercellular transfer of mRNAs, microRNAs, lipids and proteins. Here we discuss MP structure, properties and functions with particular relevance to neurological and neurovascular diseases.
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Affiliation(s)
- J Winny Yun
- Departments of Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, United States
| | - Adam Xiao
- Departments of Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, United States
| | - Ikuo Tsunoda
- Departments of Neurology, LSU Health Sciences Center, Shreveport, LA, United States; Department of Microbiology, Kindai University, Faculty of Medicine, 377-2 Ohnohigashi, Osakasayama, Osaka, 589-8511, Japan
| | - Alireza Minagar
- Departments of Neurology, LSU Health Sciences Center, Shreveport, LA, United States
| | - J Steven Alexander
- Departments of Molecular & Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, United States; Departments of Neurology, LSU Health Sciences Center, Shreveport, LA, United States.
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Affiliation(s)
- Kanika Sharma
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport
| | - Hai Sun
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport
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Abstract
C ortical speech disorders rarely occur in multiple sclerosis (MS). We report a patient with relapsing-remitting MS, who presented with acute verbal dyspraxia. Magnetic resonance imaging (MRI) demonstrated an acute T2/Flair hyperintense, primarily white matter lesion underlying the middle third of the inferior frontal gyrus. The verbal dyspraxia cleared beginning 48 hours after the initiation of iv dexamethasone. Follow-up MRI demonstrated qualitative and quantitative diminution of the hyperintensity. This is the first report of a clinically definite MS patient with acute verbal dyspraxia. Moreover, there was a suggestive localization of verbal praxis to Brodmann areas 44/45.
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Affiliation(s)
- Stephen L Jaffe
- Department of Neurology, Louisiana State University School of Medicine Shreveport, 1501 Kings Highway, Shreveport, LA 71130, USA
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Jimenez J, Jy W, Mauro LM, Horstman LL, Ahn ER, Ahn YS, Minagar A. Elevated endothelial microparticle—monocyte complexes induced by multiple sclerosis plasma and the inhibitory effects of interferon-β1b on release of endothelial microparticles, formation and transendothelial migration of monocyte-endothelial microparticle complexes. Mult Scler 2016; 11:310-5. [PMID: 15957513 DOI: 10.1191/1352458505ms1184oa] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Monocyte migration through the disrupted cerebral endothelial cell (EC) junctions plays an essential role in formation of multiple sclerosis (MS) demyelinating lesions. During pathogenesis of MS, activated ECs release endothelial microparticles (EMP), which possibly facilitate transendothelial migration (TEMIG) of monocytes. To assess functional roles of EMP in MS, specifically, their (i) interaction with monocytes, (ii) effect on monocyte TEMIG in an in vitro model of the brain microvascular endothelial cells (BMVEC), (iii) phenotypic profiles of EMP elicited by MS plasma and (iv) the effects of IFN-b1b on release of EMP and on TEMIG of monocytes (mono) and monocytes:EMP complexes (mono:EMP) through the BMVEC. The effect of IFN-b1b on the release of EMP and the TEMIG of mono and mono:EMP was assessed by preincubating BMVEC cultures of IFN-b1b prior to addition of plasma. Three EMP phenotypes, CD54, CD62E and CD31 were assayed. Plasma specimens from 20 patients with relapsing—remitting MS (11 in exacerbation, MS-E, and 9 in remission, ME-R) and 10 healthy controls were studied. Incubation of BMVEC with MS-E plasma yielded elevated levels of EMPCD54, EMP62E and EMPCD31 relative to MS-R and control plasmas. MS-E but not MS-R or control plasma also augmented TEMIG of monocytes, respectively. Mono:EMP complexes further augmented TEMIG relative to mono alone, but only in the presence of MS-E plasma; there was no significant effect with MS-R or control plasmas. The presence of IFN-b1b inhibited TEMIG of mono and mono:EMP by 20% and 30%, respectively. MS-E but not MS-R plasma elicited release of activation-derived EMP and enhanced TEMIG of mono and mono:EMP. IFN-b1b inhibited TEMIG and release of EMP, suggesting a role of EMP and a novel therapeutic mechanism for IFN-β1b in MS.
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Affiliation(s)
- Joaquin Jimenez
- Wallace H Coulter Platelet Laboratory, Division of Hematology/Oncology, University of Miami School of Medicine, Miami, FL 33136, USA
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Nasr Z, Majed M, Rostami A, Sahraian MA, Minagar A, Amini A, McGee JC, Etemadifar M. Prevalence of multiple sclerosis in Iranian emigrants: review of the evidence. Neurol Sci 2016; 37:1759-1763. [PMID: 27351545 DOI: 10.1007/s10072-016-2641-7] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 06/17/2016] [Indexed: 12/21/2022]
Abstract
Iran has the highest prevalence of multiple sclerosis (MS) in the Middle East and Asia. Rate of emigration has been significantly raised among Iranians and though, multiple studies have been published on prevalence of MS among Iranian emigrants. Here we systematically reviewed these publications. We performed a comprehensive literature search was performed on April 30, 2015 in data bases of MEDLINE, EMBASE, Scopus and Google Scholar for the terms 'multiple sclerosis', 'incidence', 'prevalence', 'epidemiology', 'migration', 'emigrant', 'immigrant', 'Iran', 'Parsis' and 'Persian'. Study location, prevalence day or period, and age of at disease onset were recorded for all the included publications. Nine publications from Sweden, Canada, Norway, UK, and India were included. Only three reported age-adjusted prevalence and six reported age of disease onset. MS prevalence among Iranian emigrants varied from 21 per 100,000 people in Bombay, India in 1985 to 433 per 100,000 people in British Columbia, Canada in 2012. Five studies reported the prevalence in the region of interest, ranging from 1.33 in Bombay, India to 240 in British Columbia, Canada. Five studies also reported the prevalence of MS in the population of the destination country, and in all of them, the prevalence of MS was higher in Iranian immigrants compared to native people. Prevalence studies performed in Iran and also on Iranian emigrants indicate roles for both genetic and environmental factors in MS susceptibility. Data might indicate that living in a high-risk area increases the susceptibility to MS.
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Affiliation(s)
- Zahra Nasr
- Isfahan Research Committee of Multiple Sclerosis, Isfahan University of Medical Sciences, Isfahan, Iran. .,Medical Students' Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Masoud Majed
- Department of Neurology, Mayo Clinic, Rochester, MN, USA.,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | | | - Mohamad Ali Sahraian
- Department of Neurology and MS Research Center, Neuroscience Institute, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Arman Amini
- Department of Neuroscience, Physiology and Pharmacology, Faculty of Life Sciences, University College London, London, UK
| | - Jeanine C McGee
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71130, USA
| | - Masoud Etemadifar
- Isfahan Research Committee of Multiple Sclerosis, Isfahan University of Medical Sciences, Isfahan, Iran
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Sharma K, Kalakoti P, Shaughnessy JE, De La Cruz N, Dossani RH, Zhu P, Gonzalez-Toledo E, Ledbetter C, Pinskton JB, Nanda A, Riel-Romero RM, Minagar A, Notarianni C, Sun H. Psammomatous Cavernous Malformation Presenting as Drug-Resistant Epilepsy: Case Illustration and Review of Literature. World Neurosurg 2016; 93:120-6. [PMID: 27283183 DOI: 10.1016/j.wneu.2016.05.093] [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: 04/14/2016] [Revised: 05/26/2016] [Accepted: 05/27/2016] [Indexed: 11/25/2022]
Abstract
BACKGROUND Psammoma bodies (PBs) are whorled, laminated hyaline spherules containing calcium deposits. Intracranially, the presence of PBs is associated with variants of meningioma and pituitary lesions, as well as aging choroid plexus. Limited information exists on their presence in vascular malformation. RESULTS In this report, we describe a case of an adolescent male with drug-resistant epilepsy that was surgically managed at our regional epilepsy center. The epileptogenic focus was determined to be emanating from an indolent right insular lesion. Histopathologic evaluation showed the abundance of intravascular and perivascular PBs. Immunohistochemical evaluation confirmed the vascular origin using vascular markers. The unusual presence of PBs in a vascular lesion was unanticipated. CONCLUSIONS Based on our case, we present the clinicoradiologic characteristics, supplemented with intraoperative findings, for this unusual lesion. In addition, because of the unusual presence of PBs in vascular lesions, we provide the findings of a systematic literature review to show the association of PBs with intracranial vascular lesions.
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Affiliation(s)
- Kanika Sharma
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Piyush Kalakoti
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - John E Shaughnessy
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Nestor De La Cruz
- Department of Pathology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Rimal H Dossani
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Peimin Zhu
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Eduardo Gonzalez-Toledo
- Department of Neuro-radiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Christina Ledbetter
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - James B Pinskton
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Anil Nanda
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Rosario Maria Riel-Romero
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Alireza Minagar
- Department of Neurology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Christina Notarianni
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
| | - Hai Sun
- Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA.
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Eskandarieh S, Heydarpour P, Minagar A, Pourmand S, Sahraian MA. Multiple Sclerosis Epidemiology in East Asia, South East Asia and South Asia: A Systematic Review. Neuroepidemiology 2016; 46:209-21. [PMID: 26901651 DOI: 10.1159/000444019] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 01/14/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is one of the most common chronic immune-mediated diseases of the human central nervous system and an important cause of non-traumatic neurologic disability among young population in several countries. Recent reports from East Asia, South East Asia and South Asia have proposed a low to moderate prevalence of MS in these countries. METHODS A literature review search was carried out in December 2014 in Medline, Embase, Scopus and Cochrane library to recover original population-based studies on MS epidemiology in East Asia, South East Asia and South Asia countries published between January 1, 1950 and December 30, 2014. We intended search strategies using the key words: multiple sclerosis, prevalence, incidence and epidemiology. Based on our inclusion criteria, 68 epidemiologic studies were included in this systematic review. RESULTS The most extensively used diagnostic criteria in the studies were McDonald's criteria. Most studies were performed in a multi-center hospital setting. The female to male ratio varied and ranged from 0.7 in India to 9.0 in China. The mean age at disease onset ranged from the lowest age of 25.3 in Iran to the highest age of 46.4 in China. MS prevalence ranged from 0.77 in 100,000 populations in Hong Kong (1999) to 85.80 in 100,000 in Iran (2013). CONCLUSIONS Advances in MS registries around the globe allow nationwide population-based studies and will allow worldly comparisons between the prevalence and incidence in different regions that are provided to monitor estimation.
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Affiliation(s)
- Sharareh Eskandarieh
- MS Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
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Minagar A, Finney GR, Heilman KM. Neurobehavioral Manifestations of Neurological Diseases: Diagnosis and Treatment. Neurol Clin 2016; 34:xiii-xiv. [DOI: 10.1016/j.ncl.2015.10.001] [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: 11/30/2022]
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McGee J, Minagar A. Thalamus and MS: Role of thalamic atrophy in daily living and employment activities of MS patients. J Neurol Sci 2015; 358:1-2. [PMID: 26362337 DOI: 10.1016/j.jns.2015.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 09/01/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Jeanie McGee
- Department of Neurology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Alireza Minagar
- Department of Neurology, LSU Health Sciences Center, Shreveport, LA, USA.
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Noroozian M, Azadfar P, Akbari L, Sadeghi A, Houshmand M, Vousooghi N, Zarrindast MR, Minagar A. Early-onset Alzheimer's disease in two Iranian families: a genetic study. Dement Geriatr Cogn Disord 2015; 38:330-6. [PMID: 25138979 DOI: 10.1159/000358232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/20/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Early-onset Alzheimer's disease (EOAD) represents less than 5% of all AD cases. Autosomal dominant EOAD has been defined as the occurrence of at least three cases in three generations. Mutations in the amyloid precursor protein (APP), presenilin-1 and presenilin-2 genes have been recognized to be the cause of EOAD. OBJECTIVE We investigated the genotype of EOAD in two generations of two families with EOAD living in an Iranian village. METHODS The polymerase chain reaction method was used to study the presenilin-1 and APP genes in 25 subjects of these generations. RESULTS A guanine-to-adenine transition in exon 17 of the APP gene resulting in a valine-to-isoleucine substitution at codon 717 was detected in 14 subjects including 6 patients with EOAD. CONCLUSION This mutation demonstrates the importance of γ-secretase, the necessity of early detection of patients with memory decline in the susceptible population and raising public awareness of consanguinity marriages.
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Affiliation(s)
- Maryam Noroozian
- Memory and Behavioral Neurology Department (MBND), Roozbeh Hospital, Tehran, Iran
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Alexander JS, Chervenak R, Weinstock-Guttman B, Tsunoda I, Ramanathan M, Martinez N, Omura S, Sato F, Chaitanya GV, Minagar A, McGee J, Jennings MH, Monceaux C, Becker F, Cvek U, Trutschl M, Zivadinov R. Blood circulating microparticle species in relapsing-remitting and secondary progressive multiple sclerosis. A case-control, cross sectional study with conventional MRI and advanced iron content imaging outcomes. J Neurol Sci 2015; 355:84-9. [PMID: 26073484 DOI: 10.1016/j.jns.2015.05.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 10/29/2014] [Revised: 05/12/2015] [Accepted: 05/20/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND Although multiple sclerosis (MS) is thought to represent an excessive and inappropriate immune response to several central nervous system (CNS) autoantigens, increasing evidence also suggests that MS may also be a neurovascular inflammatory disease, characterized by endothelial activation and shedding of cell membrane microdomains known as 'microparticles' into the circulation. OBJECTIVE To investigate the relationships between these endothelial biomarkers and MS. METHODS We examined the relative abundance of CD31(+)/PECAM-1, CD51(+)CD61(+) (αV-β3) and CD54(+) (ICAM-1) bearing microparticles in sera of healthy individuals, patients with relapsing-remitting MS, and secondary-progressive MS. We also investigated the correlation among circulating levels of different microparticle species in MS with conventional MRI (T2- and T1-lesion volumes and brain atrophy), as well as novel MR modalities [assessment of iron content on susceptibility-weighted imaging (SWI)-filtered phase]. RESULTS Differences in circulating microparticle levels were found among MS groups, and several microparticle species (CD31(+)/CD51(+)/CD61(+)/CD54(+)) were found to correlate with conventional MRI and SWI features of MS. CONCLUSION These results indicate that circulating microparticles' profiles in MS may support mechanistic roles for microvascular stress and injury which is an underlying contributor not only to MS initiation and progression, but also to pro-inflammatory responses.
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Affiliation(s)
- J S Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health-Shreveport, LA, USA
| | - R Chervenak
- Department Microbiology & Immunology, Center for Molecular and Tumor Virology, Louisiana State University Health-Shreveport, LA, USA
| | - B Weinstock-Guttman
- The Jacobs Neurological Institute, Department of Neurology, University of Buffalo, Buffalo, NY, USA
| | - I Tsunoda
- Department Microbiology & Immunology, Center for Molecular and Tumor Virology, Louisiana State University Health-Shreveport, LA, USA
| | - M Ramanathan
- Department of Pharmaceutical Sciences, State University of New York, Buffalo, NY, USA
| | - N Martinez
- Department Microbiology & Immunology, Center for Molecular and Tumor Virology, Louisiana State University Health-Shreveport, LA, USA
| | - S Omura
- Department Microbiology & Immunology, Center for Molecular and Tumor Virology, Louisiana State University Health-Shreveport, LA, USA
| | - F Sato
- Department Microbiology & Immunology, Center for Molecular and Tumor Virology, Louisiana State University Health-Shreveport, LA, USA
| | - G V Chaitanya
- Department of Molecular and Cellular Physiology, Louisiana State University Health-Shreveport, LA, USA
| | - A Minagar
- Department of Neurology, Louisiana State University Health-Shreveport, LA, USA.
| | - J McGee
- Department of Neurology, Louisiana State University Health-Shreveport, LA, USA
| | - M H Jennings
- Department of Molecular and Cellular Physiology, Louisiana State University Health-Shreveport, LA, USA
| | - C Monceaux
- Department of Molecular and Cellular Physiology, Louisiana State University Health-Shreveport, LA, USA
| | - F Becker
- Department of Molecular and Cellular Physiology, Louisiana State University Health-Shreveport, LA, USA; Department for General and Visceral Surgery, Muenster, Germany
| | - U Cvek
- Computer Sciences Department, Louisiana State University-Shreveport, LA, USA
| | - M Trutschl
- Computer Sciences Department, Louisiana State University-Shreveport, LA, USA
| | - R Zivadinov
- The Jacobs Neurological Institute, Department of Neurology, University of Buffalo, Buffalo, NY, USA; Buffalo Neuroimaging Analysis Center, Department of Neurology, University of Buffalo, Buffalo, NY, USA
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Sahraian MA, Moghadasi AN, Owji M, Naghshineh H, Minagar A. Neuromyelitis optica with linear enhancement of corpus callosum in brain magnetic resonance imaging with contrast: a case report. J Med Case Rep 2015; 9:137. [PMID: 26059535 PMCID: PMC4487970 DOI: 10.1186/s13256-015-0613-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 05/05/2015] [Indexed: 11/10/2022] Open
Abstract
Introduction Neuromyelitis optica is a demyelinating disease of the central nervous system with various patterns of brain lesions. Corpus callosum may be involved in both multiple sclerosis and neuromyelitis optica. Previous case reports have demonstrated that callosal lesions in neuromyelitis optica are usually large and edematous and have a heterogeneous intensity showing a “marbled pattern” in the acute phase. Their size and intensity may reduce with time or disappear in the chronic stages. Case presentation In this report, we describe a case of a 25-year-old Caucasian man with neuromyelitis optica who presented clinically with optic neuritis and myelitis. His brain magnetic resonance imaging demonstrated linear enhancement of the corpus callosum. Brain images with contrast agent added also showed linear ependymal layer enhancement of the lateral ventricles, which has been reported in this disease previously. Conclusions Linear enhancement of corpus callosum in magnetic resonance imaging with contrast agent could help in diagnosing neuromyelitis optica and differentiating it from other demyelinating disease, especially multiple sclerosis.
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Affiliation(s)
- Mohammad Ali Sahraian
- MS Research Center, Neuroscience Institute, Tehran University of Medical Science, Tehran, Iran.
| | | | - Mahsa Owji
- MS Research Center, Neuroscience Institute, Tehran University of Medical Science, Tehran, Iran.
| | - Hoda Naghshineh
- MS Research Center, Neuroscience Institute, Tehran University of Medical Science, Tehran, Iran.
| | - Alireza Minagar
- Department of Neurology, LSU Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71103, USA.
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McGee J, Minagar A. MR imaging and cognitive impairment in MS: A neuroimaging-based mechanistic view. Clin Neurol Neurosurg 2015; 132:52-3. [DOI: 10.1016/j.clineuro.2015.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 02/10/2015] [Indexed: 11/29/2022]
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