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Neurological Components in Coronavirus Induced Disease: A Review of the Literature Related to SARS, MERS, and COVID-19 冠状病毒诱导疾病的神经系统成分:SARS、MERS和COVID-19相关文献综述
IF 1.5
Neurology Research International Pub Date : 2020-09-18 DOI: 10.1155/2020/6587875
Jonathan Adrián Zegarra-Valdivia, B. Chino-Vilca, T. Tairo-Cerron, V. Munive, C. Lastarria-Perez, R. Ames-Guerrero
{"title":"Neurological Components in Coronavirus Induced Disease: A Review of the Literature Related to SARS, MERS, and COVID-19","authors":"Jonathan Adrián Zegarra-Valdivia, B. Chino-Vilca, T. Tairo-Cerron, V. Munive, C. Lastarria-Perez, R. Ames-Guerrero","doi":"10.1155/2020/6587875","DOIUrl":"https://doi.org/10.1155/2020/6587875","url":null,"abstract":"Background. COVID-19 has been declared the pandemic of the 21st century, causing more than 45,000 deaths worldwide. The abrupt release of SARS-CoV-2 demonstrated the potential infection, morbidity, and lethality of zoonotic viruses and human-to-human transmission. Fever, cough, and fatigue are reported as the most common symptoms of the disease, including acute respiratory distress syndrome, and also signs of severe illness, such as shock, acute cardiac injury, and renal lesions, are described. Considering the previous works related to human coronavirus and other zoonotic infections, it has been demonstrated that the neuroinvasive propensity is a common characteristic of coronaviruses, especially in SARS-CoV and MERS-CoV. Objective. In the present review, we analyzed the potential neurological components involved in coronavirus infections and detailed the neurological syndromes related to COVID-19. We also examined the mechanism of transmission and CNS pathology related to other viruses with similar structures such as SARS-CoV and MERS-CoV. Methods. A comprehensive search of different original articles and clinical, experimental, and review studies was conducted in MEDLINE/PubMed, Scopus, and Web of Science. We selected 92 articles that have been published in journals or preprints according to the search words and the inclusion and exclusion criteria. Results. COVID-19 patients may experience neurological symptoms such as headache, impaired mental status, confusion, dizziness, nausea and vomiting, anosmia/hyposmia, and dysgeusia/hypogeusia as initial symptoms, with more severe manifestations such as seizures or coma later on. The neurological signs shown are clinical symptoms similar to those reported for SARS-CoV and MERS-CoV. Given that both SARS-CoV and MERS-CoV have similar structures, these viruses may share comparable neurological symptoms and similar progression. Coronaviruses are linked to central nervous system dysfunction, and they are also reported as the probable cause of multiple sclerosis, encephalitis, and meningitis.","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2020-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88626449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Neurocognitive Functioning among Children with Sickle Cell Anemia Attending SCA Clinic at MNH, Dar es Salaam, Tanzania. 坦桑尼亚达累斯萨拉姆MNH SCA诊所镰状细胞性贫血患儿的神经认知功能
IF 1.5
Neurology Research International Pub Date : 2020-09-01 eCollection Date: 2020-01-01 DOI: 10.1155/2020/3636547
Limi O Matondo, Edward Kija, Karim P Manji
{"title":"Neurocognitive Functioning among Children with Sickle Cell Anemia Attending SCA Clinic at MNH, Dar es Salaam, Tanzania.","authors":"Limi O Matondo,&nbsp;Edward Kija,&nbsp;Karim P Manji","doi":"10.1155/2020/3636547","DOIUrl":"https://doi.org/10.1155/2020/3636547","url":null,"abstract":"<p><strong>Background: </strong>Children with sickle cell anemia are at a higher risk of developing neurological sequelae like abnormal intellectual functioning, poor academic performance, abnormal fine motor functioning, and attentional deficits. There is a paucity of data about neurocognitive impairment among children with sickle cell anemia in Tanzania. Recognition of the magnitude of neurocognitive impairment will help to provide insight in the causative as well as preventive aspects of the same. Therefore, this study was carried out to determine the prevalence and factors associated with neurocognitive impairment in children with sickle cell anemia.</p><p><strong>Methods: </strong>This is a cross-sectional comparative study between children with SCA and a control group of the hemoglobin AA sibling. It was carried out in Muhimbili National Hospital during a five-month period. The Rey-Osterrieth Complex Figure test (ROCF) which is used to test memory and visual special functions and KOH block design tools that have been previously validated through another study locally were used. Additional information on demographic characteristics was also collected using a predetermined questionnaire. Proportions and comparisons of means were used to examine associations between neurocognitive impairment and independent variables for associated factors.</p><p><strong>Results: </strong>A total of 313 children were included in the final analysis. Among all the participants, the majority of the participants in the sickle cell group were of the age group 14-15 years (45.9%). In the comparison group, the majority were of the age group 9-10 years (43.8%). The neurocognitive scores in children with sickle cell anemia were significantly different from the normal siblings. In the copy ROCF, the neurocognitive function in SCA participants was 68.2% below the mean as compared to 45% of their counterparts, <i>p</i> ≤ 0.001. Additionally, there was no difference in memory in children with SCA compared to normal siblings (14.8% vs. 12.5%, respectively, <i>p</i>=0.606). Children with SCA had a higher proportion of impaired IQ (85.4%) as compared to children without SCA (72.5%), and the difference was statistically significant, <i>p</i>=0.009. Factors associated with neurocognitive impairment were age above 13 years, BMI, and absenteeism from school. <i>Conclusion and Recommendation</i>. Children with SCA had more impairment in terms of copying and IQ. We recommend assessment at the younger age group, increased sample size in future studies, and long-term cohort follow-up.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"3636547"},"PeriodicalIF":1.5,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/3636547","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38399828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Pattern-Reversal Visual Evoked Potentials Tests in Persons with Type 2 Diabetes Mellitus with and without Diabetic Retinopathy. 伴有和不伴有糖尿病视网膜病变的2型糖尿病患者的模式逆转视觉诱发电位试验
IF 1.5
Neurology Research International Pub Date : 2020-08-24 eCollection Date: 2020-01-01 DOI: 10.1155/2020/1014857
Raghda S Al-Najjar, Nehaya M Al-Aubody, Salah Z Al-Asadi, Majid Alabbood
{"title":"Pattern-Reversal Visual Evoked Potentials Tests in Persons with Type 2 Diabetes Mellitus with and without Diabetic Retinopathy.","authors":"Raghda S Al-Najjar,&nbsp;Nehaya M Al-Aubody,&nbsp;Salah Z Al-Asadi,&nbsp;Majid Alabbood","doi":"10.1155/2020/1014857","DOIUrl":"https://doi.org/10.1155/2020/1014857","url":null,"abstract":"<p><strong>Background: </strong>Currently, diabetic retinopathy (DR) has a wide recognition as a neurovascular rather than a microvascular diabetic complication with an increasing need for enhanced detection approaches. Pattern-reversal visual evoked potentials (PRVEPs) test, as an objective electrophysiological measure of the optic nerve and retinal function, can be of great value in the detection of diabetic retinal changes.</p><p><strong>Objectives: </strong>The use of two sizes of checkerboard PRVEPs testing to detect any neurological changes in persons with type 2 diabetes mellitus (T2DM) with and without a clinically detected DR. Also, to compare the results according to the candidate age, duration, and glycemic status of T2DM.</p><p><strong>Methods: </strong>This study included 50 candidates as group A with T2DM and did not have a clinically detected DR and 50 candidates as group B with T2DM and had a clinically detected early DR and 50 candidates as controls who were neither diabetic nor had any other medical or ophthalmic condition that might affect PRVEPs test results. The PRVEPs were recorded in the consultant unit of ophthalmology in Almawani Teaching Hospital. Monocular PRVEPs testing of both eyes was done by using large (60 min) and small (15 min) checks to measure N75 latency and P100 latency and amplitude.</p><p><strong>Results: </strong>There was a statistically significant P100 latency delay and P100 amplitude reduction in both groups A and B in comparison with the controls. The difference between groups A and B was also significant. In both test results of groups A and B, the proportions of abnormal P100 latency were higher than those of P100 amplitude with a higher abnormal proportions in 15 min test.</p><p><strong>Conclusions: </strong>The PRVEP test detected neurological changes, mainly as conductive alterations affecting mostly the foveal region prior to any overt DR clinical changes, and these alterations were heightened by the presence of DR clinical changes.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"1014857"},"PeriodicalIF":1.5,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/1014857","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38363747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Corrigendum to "Effects of Number of Repetitions and Number of Hours of Shaping Practice during Constraint-Induced Movement Therapy: A Randomized Controlled Trial". 对“在约束诱导运动治疗中重复次数和塑形练习小时数的影响:一项随机对照试验”的更正。
IF 1.5
Neurology Research International Pub Date : 2020-08-24 eCollection Date: 2020-01-01 DOI: 10.1155/2020/1256231
Auwal Abdullahi
{"title":"Corrigendum to \"Effects of Number of Repetitions and Number of Hours of Shaping Practice during Constraint-Induced Movement Therapy: A Randomized Controlled Trial\".","authors":"Auwal Abdullahi","doi":"10.1155/2020/1256231","DOIUrl":"https://doi.org/10.1155/2020/1256231","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1155/2018/5496408.].</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"1256231"},"PeriodicalIF":1.5,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/1256231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38363748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Minimizing the Diagnostic Delay in Amyotrophic Lateral Sclerosis: The Role of Nonneurologist Practitioners. 最大限度地减少肌萎缩侧索硬化症的诊断延迟:非神经科医生的作用。
IF 1.5
Neurology Research International Pub Date : 2020-05-11 eCollection Date: 2020-01-01 DOI: 10.1155/2020/1473981
Martin Matharan, Stéphane Mathis, Sarah Bonabaud, Louis Carla, Antoine Soulages, Gwendal Le Masson
{"title":"Minimizing the Diagnostic Delay in Amyotrophic Lateral Sclerosis: The Role of Nonneurologist Practitioners.","authors":"Martin Matharan,&nbsp;Stéphane Mathis,&nbsp;Sarah Bonabaud,&nbsp;Louis Carla,&nbsp;Antoine Soulages,&nbsp;Gwendal Le Masson","doi":"10.1155/2020/1473981","DOIUrl":"https://doi.org/10.1155/2020/1473981","url":null,"abstract":"<p><strong>Introduction: </strong>Amyotrophic lateral sclerosis (ALS), usually fatal in a few years, is a neurodegenerative disorder where the diagnostic delay, although variable according to the studies, remains too long. The main objective of this study was to determine the average time to diagnose ALS and the role of each physician, general practitioner (GP), or specialist (neurologist or not) involved in the management of these patients. The secondary objective was to propose some simple schemes to quickly identify an ALS suspicion with the aim to reduce this delay. <i>Patients and Methods</i>. This retrospective study evaluated the diagnostic delay (and other intermediate delays) of 90 ALS patients registered in the ALS Center of Bordeaux (France) in 2013. The main clinical signs encountered (and their order of appearance) were studied.</p><p><strong>Results: </strong>The average diagnostic delay was 17 months, with a median diagnostic delay of 12 months. The average diagnostic delay was 2.7 months between the first symptoms and the first complaint to GP, followed by an additional 6.5 month delay before the patient's first visit to a neurologist. This period could be shortened, especially if GP performed additional tests quickly (<i>p</i>=0.01), as the time spent consulting various specialists often extends this crucial step. Overall, diagnostic delay accounted for 40% of the total duration of the disease progression.</p><p><strong>Conclusion: </strong>In relation to total survival time, the diagnostic delay of ALS appears to be proportionately very long, sometimes longer than that observed in previous studies (because it also included the total delay to diagnostic or treatment initiation). The rapid execution of useful additional tests by the first medical doctor, often GP (with the help of a neurologist), considerably reduces the diagnostic delay. The central role of GP seems to be crucial in the management of patients with ALS. The main objective is, of course, to initiate appropriate treatment and care as soon as possible. Finally, based on our results, we also provide a short practical diagram to help nonneurologist practitioners to quickly discuss the diagnosis of ALS in case of some specific symptoms (\"red flags\").</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"1473981"},"PeriodicalIF":1.5,"publicationDate":"2020-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/1473981","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37977168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Electricity, Neurology, and Noninvasive Brain Stimulation: Looking Back, Looking Ahead. 电、神经学和无创脑刺激:回顾过去,展望未来。
IF 1.5
Neurology Research International Pub Date : 2020-04-13 eCollection Date: 2020-01-01 DOI: 10.1155/2020/5260820
Vijay Renga
{"title":"Electricity, Neurology, and Noninvasive Brain Stimulation: Looking Back, Looking Ahead.","authors":"Vijay Renga","doi":"10.1155/2020/5260820","DOIUrl":"https://doi.org/10.1155/2020/5260820","url":null,"abstract":"<p><p>Electricity and neurology evolved synchronously over the past few centuries. This article looks at their origins and their journey into noninvasive brain stimulation technique of transcranial direct current stimulation (tDCS), which is now popular in neuroscience research.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"5260820"},"PeriodicalIF":1.5,"publicationDate":"2020-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/5260820","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37867189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Epilepsy Treatment Outcome and Its Predictors among Ambulatory Patients with Epilepsy at Mizan-Tepi University Teaching Hospital, Southwest Ethiopia. 埃塞俄比亚西南部Mizan-Tepi大学教学医院门诊癫痫患者的治疗结果及其预测因素
IF 1.5
Neurology Research International Pub Date : 2020-04-08 eCollection Date: 2020-01-01 DOI: 10.1155/2020/8109858
Ameha Zewudie, Yitagesu Mamo, Desalegn Feyissa, Mohammed Yimam, Gosaye Mekonen, Ahmed Abdela
{"title":"Epilepsy Treatment Outcome and Its Predictors among Ambulatory Patients with Epilepsy at Mizan-Tepi University Teaching Hospital, Southwest Ethiopia.","authors":"Ameha Zewudie,&nbsp;Yitagesu Mamo,&nbsp;Desalegn Feyissa,&nbsp;Mohammed Yimam,&nbsp;Gosaye Mekonen,&nbsp;Ahmed Abdela","doi":"10.1155/2020/8109858","DOIUrl":"https://doi.org/10.1155/2020/8109858","url":null,"abstract":"<p><strong>Background: </strong>Epilepsy is among the most common neurological disorders which is highly treatable with currently available antiepileptic drugs at a reasonable price. In Ethiopia, despite a number of studies revealed high prevalence of epilepsy, little is known on predictors of poorly controlled seizures. Thus, the aim of this study was to assess epilepsy treatment outcome and its predictors among patients with epilepsy on follow-up at the ambulatory care unit of Mizan-Tepi University Teaching Hospital, Southwest Ethiopia.</p><p><strong>Methods: </strong>A hospital-based cross-sectional study involving patient interview and chart review was conducted from March 10 to April 10, 2018. Drug use patterns and sociodemographic data of the study participants were accustomed to descriptive statistics. Backward logistic regression analysis was done to identify predictors of poor seizure control. Statistical significance was considered at <i>p</i> value <0.05.</p><p><strong>Results: </strong>From a total of 143 studied patients with epilepsy, 60.8% had uncontrolled seizures. Monotherapy (79%) was commonly used for the treatment of seizures, of which phenobarbital was the most commonly utilized single anticonvulsant drug (62.9%). The majority (72.7%) of the patients had developed one or more antiepileptic-related adverse effects. Medium medication adherence (adjusted odds ratio (AOR) = 5.4; 95% CI = 1.52-19.23; <i>p</i>=0.009), poor medication adherence (AOR = 8.16; 95% CI = 3.04-21.90; <i>p</i>=0.001), head injury before seizure occurrence (AOR = 4.9; 95% CI = 1.25-19.27; <i>p</i>=0.02), and seizure attacks ≥4 episodes/week before AEDs initiation (AOR = 8.52; % CI = 2.41-13.45; <i>p</i>=0.001) were the predictors of uncontrolled seizure.</p><p><strong>Conclusions: </strong>Based on our findings, more than half of the patients with epilepsy had poorly controlled seizures. Nonadherence to antiepileptic drugs, high frequency of seizure attack before AEDs initiation, and history of a head injury before the occurrence of seizure were predictors of uncontrolled seizure. Patient medication adherence should be increased by the free access of antiepileptic drugs and attention should be given for the patients with a history of head injury and high frequency of seizure attacks before AEDs initiation.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"8109858"},"PeriodicalIF":1.5,"publicationDate":"2020-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/8109858","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37867190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Validation of an Individualized Measure of Quality of Life, Patient Generated Index, for Use with People with Parkinson's Disease. 用于帕金森病患者的个性化生活质量测量的验证,患者生成指数。
IF 1.5
Neurology Research International Pub Date : 2020-03-30 eCollection Date: 2020-01-01 DOI: 10.1155/2020/6916135
Ayse Kuspinar, Kedar K V Mate, Anne-Louise Lafontaine, Nancy Mayo
{"title":"Validation of an Individualized Measure of Quality of Life, Patient Generated Index, for Use with People with Parkinson's Disease.","authors":"Ayse Kuspinar,&nbsp;Kedar K V Mate,&nbsp;Anne-Louise Lafontaine,&nbsp;Nancy Mayo","doi":"10.1155/2020/6916135","DOIUrl":"https://doi.org/10.1155/2020/6916135","url":null,"abstract":"<p><strong>Methods: </strong>Patients with PD completed the PGI and various standard patient-reported outcome (PRO) measures. The PGI and standard PRO measures were compared at the total score, domain, and item levels. Pearson's correlations and independent <i>t</i>-tests were used, as well as positive and negative predictive values.</p><p><strong>Results: </strong>The sample (<i>n</i> = 76) had a mean age of 69 (standard deviation 9) and were predominantly men (59%). The PGI was moderately correlated (<i>r</i> = -0.35) with the standardized disease-specific QOL measure Parkinson's Disease Questionnaire (PDQ-8). Within one severity rating, agreement between the PGI and different standard outcome measures ranged from 85 to 100% for walking, 69 to 100% for fatigue, 38 to 75% for depression, and 20 to 80% for memory/concentration.</p><p><strong>Conclusion: </strong>This study demonstrates that nominated areas of QOL on the PGI provide comparable results to standard PRO measures, and provides evidence in support of the validity of this individualized measure in PD.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"6916135"},"PeriodicalIF":1.5,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/6916135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37837526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
HMGB1 is a Potential Mediator of Astrocytic TLR4 Signaling Activation following Acute and Chronic Focal Cerebral Ischemia. HMGB1是急性和慢性局灶性脑缺血后星形细胞TLR4信号激活的潜在介质。
IF 1.5
Neurology Research International Pub Date : 2020-02-20 eCollection Date: 2020-01-01 DOI: 10.1155/2020/3929438
Bolanle M Famakin, Orest Tsymbalyuk, Natalia Tsymbalyuk, Svetlana Ivanova, Seung Kyoon Woo, Min Seong Kwon, Volodymyr Gerzanich, J Marc Simard
{"title":"HMGB1 is a Potential Mediator of Astrocytic TLR4 Signaling Activation following Acute and Chronic Focal Cerebral Ischemia.","authors":"Bolanle M Famakin,&nbsp;Orest Tsymbalyuk,&nbsp;Natalia Tsymbalyuk,&nbsp;Svetlana Ivanova,&nbsp;Seung Kyoon Woo,&nbsp;Min Seong Kwon,&nbsp;Volodymyr Gerzanich,&nbsp;J Marc Simard","doi":"10.1155/2020/3929438","DOIUrl":"https://doi.org/10.1155/2020/3929438","url":null,"abstract":"<p><p>Limited, and underutilized, therapeutic options for acute stroke require new approaches to treatment. One such potential approach involves better understanding of innate immune response to brain injury such as acute focal cerebral ischemia. This includes understanding the temporal profile, and specificity, of Toll-like receptor 4 (TLR4) signaling in brain cell types, such as astrocytes, following focal cerebral ischemia. This study evaluated TLR4 signaling, and downstream mediators, in astrocytes, during acute and chronic phases post transient middle cerebral artery occlusion (MCAO). We also determined whether high mobility group box 1 (HMGB1), an endogenous TLR4 ligand, was sufficient to induce TLR4 signaling activation in astrocytes <i>in vivo and in vitro.</i> We injected HMGB1 into normal cortex, <i>in vivo,</i> and stimulated cultured astrocytes with HMGB1, <i>in vitro,</i> and determined TLR4, and downstream mediator, expression by immunohistochemistry. We found that expression of TLR4, and downstream mediators, such as inducible nitric oxide synthase (iNOS), occurs in penumbral astrocytes in acute and chronic phases after focal cerebral ischemia, but was undetectable in cortical astrocytes in the contralateral hemisphere. In addition, cortical injection of recombinant HMGB1 led to a trend towards an almost 2-fold increase in TLR4 expression in astrocytes surrounding the injection site. Consistent with these results, <i>in vitro</i> stimulation of the DI TNC1 astrocyte cell line, with recombinant HMGB1, led to increased TLR4 and iNOS message levels. These findings suggest that HMGB1, an endogenous TLR4 ligand, is an important physiological ligand for TLR4 signaling activation, in penumbral astrocytes, following acute and chronic ischemia and HMGB1 amplifies TLR4 signaling in astrocytes.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"3929438"},"PeriodicalIF":1.5,"publicationDate":"2020-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/3929438","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37717978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Structural Equation Modeling of Parkinson's Caregiver Social Support, Resilience, and Mental Health: A Strength-Based Perspective. 帕金森病护理者社会支持、复原力和心理健康的结构方程模型:基于力量的视角
IF 1.5
Neurology Research International Pub Date : 2020-02-14 eCollection Date: 2020-01-01 DOI: 10.1155/2020/7906547
Carmen M Tyler, Richard S Henry, Paul B Perrin, Jack Watson, Teresita Villaseñor, Sarah K Lageman, Erin R Smith, Genoveva Rizo Curiel, Judith Avila, Miriam E Jimenez Maldonado, Jose A Soto-Escageda
{"title":"Structural Equation Modeling of Parkinson's Caregiver Social Support, Resilience, and Mental Health: A Strength-Based Perspective.","authors":"Carmen M Tyler, Richard S Henry, Paul B Perrin, Jack Watson, Teresita Villaseñor, Sarah K Lageman, Erin R Smith, Genoveva Rizo Curiel, Judith Avila, Miriam E Jimenez Maldonado, Jose A Soto-Escageda","doi":"10.1155/2020/7906547","DOIUrl":"10.1155/2020/7906547","url":null,"abstract":"<p><p>Only scant literature has focused on social support in Parkinson's disease (PD) caregivers, and no studies to date have examined resilience in this population, despite both variables having been shown to be important in other caregiving populations. As a result, the purpose of the current study was to construct and validate a theoretical structural equation model whereby social support is associated with higher levels of resilience in PD caregivers and increased resilience is related to decreased mental health symptoms. Two hundred fifty three PD caregivers from two clinics in the United States and Mexico completed self-report measures of these constructs. Results suggested that the hypothesized pattern was robustly supported with the structural equation model showing generally good fit indices. Higher levels of social support were associated with increased resilience, which in turn was associated with reduced mental health symptoms. Resilience partially mediated social support's effect on mitigating mental health symptoms. The model explained 11% of the variance in resilience and 35% in mental health symptoms. These findings have implications for future research on the development and tailoring of interventions to improve social support, resilience, and mental health in PD caregivers.</p>","PeriodicalId":19124,"journal":{"name":"Neurology Research International","volume":"2020 ","pages":"7906547"},"PeriodicalIF":1.5,"publicationDate":"2020-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7042552/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37687708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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