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Prado P, Medel V, Gonzalez-Gomez R, Sainz-Ballesteros A, Vidal V, Santamaría-García H, Moguilner S, Mejia J, Slachevsky A, Behrens MI, Aguillon D, Lopera F, Parra MA, Matallana D, Maito MA, Garcia AM, Custodio N, Funes AÁ, Piña-Escudero S, Birba A, Fittipaldi S, Legaz A, Ibañez A. The BrainLat project, a multimodal neuroimaging dataset of neurodegeneration from underrepresented backgrounds. Sci Data 2023; 10:889. [PMID: 38071313 PMCID: PMC10710425 DOI: 10.1038/s41597-023-02806-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
The Latin American Brain Health Institute (BrainLat) has released a unique multimodal neuroimaging dataset of 780 participants from Latin American. The dataset includes 530 patients with neurodegenerative diseases such as Alzheimer's disease (AD), behavioral variant frontotemporal dementia (bvFTD), multiple sclerosis (MS), Parkinson's disease (PD), and 250 healthy controls (HCs). This dataset (62.7 ± 9.5 years, age range 21-89 years) was collected through a multicentric effort across five Latin American countries to address the need for affordable, scalable, and available biomarkers in regions with larger inequities. The BrainLat is the first regional collection of clinical and cognitive assessments, anatomical magnetic resonance imaging (MRI), resting-state functional MRI (fMRI), diffusion-weighted MRI (DWI), and high density resting-state electroencephalography (EEG) in dementia patients. In addition, it includes demographic information about harmonized recruitment and assessment protocols. The dataset is publicly available to encourage further research and development of tools and health applications for neurodegeneration based on multimodal neuroimaging, promoting the assessment of regional variability and inclusion of underrepresented participants in research.
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Affiliation(s)
- Pavel Prado
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Escuela de Fonoaudiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago, Chile
| | - Vicente Medel
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Raul Gonzalez-Gomez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | | | - Victor Vidal
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Hernando Santamaría-García
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
| | - Sebastian Moguilner
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jhony Mejia
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Departamento de Ingeniería Biomédica, Universidad de Los Andes, Bogotá, Colombia
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Andrea Slachevsky
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neurocience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Geroscience Center for Brain Health and Metabolism, (GERO), Santiago de Chile, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Servicio de Neurología, Departamento de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago de Chile, Chile
| | - Maria Isabel Behrens
- Centro de Investigación Clínica Avanzada (CICA), Facultad de Medicina-Hospital Clínico, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Neurocirugía, Hospital Clínico Universidad de Chile, Independencia, Santiago, 8380430, Chile
- Departamento de Neurociencia, Facultad de Medicina, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Psiquiatría, Clínica Alemana-Universidad del Desarrollo, Santiago, 8370065, Chile
| | - David Aguillon
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Francisco Lopera
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Diana Matallana
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Mental Health Department, Hospital Universitario Fundación Santa Fe de Bogotá, Memory Clinic, Bogotá, Colombia
| | - Marcelo Adrián Maito
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Adolfo M Garcia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - Nilton Custodio
- Unit Cognitive Impairment and Dementia Prevention, Peruvian Institute of Neurosciences, Lima, Peru
| | - Alberto Ávila Funes
- Geriatrics Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Stefanie Piña-Escudero
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Agustina Birba
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Instituto Universitario de Neurociencia, Universidad de La Laguna, Tenerife, Spain
- Facultad de Psicología, Universidad de La Laguna, Tenerife, Spain
| | - Sol Fittipaldi
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustina Legaz
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustín Ibañez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile.
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA.
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland.
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina.
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Paul P, Mahfoud ZR, Malik RA, Kaul R, Muffuh Navti P, Al-Sheikhly D, Chaari A. Knowledge, Awareness, and Attitude of Healthcare Stakeholders on Alzheimer's Disease and Dementia in Qatar. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4535. [PMID: 36901551 PMCID: PMC10002196 DOI: 10.3390/ijerph20054535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Dementia is characterized by progressive cognitive decline, memory impairment, and disability. Alzheimer's disease (AD) accounts for 60-70% of cases, followed by vascular and mixed dementia. Qatar and the Middle East are at increased risk owing to aging populations and high prevalence of vascular risk factors. Appropriate levels of knowledge, attitudes, and awareness amongst health care professionals (HCPs) are the need of the hour, but literature indicates that these proficiencies may be inadequate, outdated, or markedly heterogenous. In addition to a review of published quantitative surveys investigating similar questions in the Middle East, a pilot cross-sectional online needs-assessment survey was undertaken to gauge these parameters of dementia and AD among healthcare stakeholders in Qatar between 19 April and 16 May 2022. Overall, 229 responses were recorded between physicians (21%), nurses (21%), and medical students (25%), with two-thirds from Qatar. Over half the respondents reported that >10% of their patients were elderly (>60 years). Over 25% reported having contact with >50 patients with dementia or neurodegenerative disease annually. Over 70% had not undertake related education/training in the last 2 years. The knowledge of HCPs regarding dementia and AD was moderate (mean score of 5.3 ± 1.5 out of 7) and their awareness of recent advances in basic disease pathophysiology was lacking. Differences existed across professions and location of respondents. Our findings lay the groundwork for a call-to-action for healthcare institutions to improve dementia care within Qatar and the Middle East region.
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Affiliation(s)
| | - Ziyad Riyad Mahfoud
- Division of Medical Education, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
- Division of Epidemiology, Department of Population Health Sciences, Weill Cornell Medicine, NY 10065, New York, USA
| | - Rayaz A. Malik
- Division of Medicine, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9NT, UK
- Faculty of Science and Engineering, Manchester Metropolitan University, Manchester M15 6BH, UK
| | | | - Phyllis Muffuh Navti
- Division of Continuing Professional Development, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
| | - Deema Al-Sheikhly
- Division of Medical Education, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
- Division of Continuing Professional Development, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
| | - Ali Chaari
- Premedical Division, Weill Cornell Medicine-Qatar, Doha 24144, Qatar
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Wang Y, Li S, Zhou Q, Wang Y, Shi J. Vascular dementia has the highest hospitalisation rate in China: a nationwide hospital information system study. Stroke Vasc Neurol 2023; 8:59-68. [PMID: 36219569 PMCID: PMC9985804 DOI: 10.1136/svn-2022-001637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/16/2022] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Although vascular dementia (VaD) is not uncommon in the hospital, most studies on VaD are community based. This study on VaD is the first to use a national hospital information system (HIS) in China. METHODS This study was a hospital population-based cohort study, and data were acquired from the Hospital Quality Monitoring System, a Chinese national database that covers 1531 tertiary hospitals in China. The medical records in the HIS included demographic information, diagnoses, procedures, expenses, etc. VaD was diagnosed by hospital attending physicians and identified by the International Classification of Diseases (ICD) 10 code (F01.0-F01.9). RESULTS 1259 (82.23%) tertiary hospitals were included in this study, and 274 230 hospitalisation records of 123 700 VaD patients from 2016 to 2018 were identified for analysis. VaD (51.27%) was the most common type of dementia in hospitalised patients. The age-adjusted and sex-adjusted hospital incidence of VaD was estimated to be 2.97 per 100 000 person-years (95% CI 2.92 to 3.02). The mean age of VaD patients admitted to hospitals was 74.13±10.88, with more male (61.0%) patients. The main comorbidities were hypertension (67.2%), heart disease (63.6%) and cerebral infarction (55.5%). The mortality rate of VaD in hospital was 28.91‰ (95% CI 28.0 to 29.9) between 2016 and 2018. The top 1 cause of death due to VaD was pneumonia and other respiratory disorders. CONCLUSIONS VaD is the most common form of dementia in hospitalised patients. It casts huge burdens on affected patients and their caregivers. Vascular risk factors are prevalent in VaD patients. Reducing these factors is essential to improve patient care. The leading causes of death by VaD are pneumonia and other respiratory disorders. Hospital care and the management of respiratory illness are critical for VaD care in the hospital.
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Affiliation(s)
- Yue Wang
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China.,National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Shiping Li
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China.,National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Qi Zhou
- National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Beijing, China
| | - Yongjun Wang
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China .,National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
| | - Jiong Shi
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China .,National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
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Bilches Medinas D, Malik S, Yıldız‐Bölükbaşı E, Borgonovo J, Saaranen MJ, Urra H, Pulgar E, Afzal M, Contreras D, Wright MT, Bodaleo F, Quiroz G, Rozas P, Mumtaz S, Díaz R, Rozas C, Cabral‐Miranda F, Piña R, Valenzuela V, Uyan O, Reardon C, Woehlbier U, Brown RH, Sena‐Esteves M, Gonzalez‐Billault C, Morales B, Plate L, Ruddock LW, Concha ML, Hetz C, Tolun A. Mutation in protein disulfide isomerase A3 causes neurodevelopmental defects by disturbing endoplasmic reticulum proteostasis. EMBO J 2022; 41:e105531. [PMID: 34904718 PMCID: PMC8762563 DOI: 10.15252/embj.2020105531] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 09/23/2021] [Accepted: 10/14/2021] [Indexed: 01/19/2023] Open
Abstract
Recessive gene mutations underlie many developmental disorders and often lead to disabling neurological problems. Here, we report identification of a homozygous c.170G>A (p.Cys57Tyr or C57Y) mutation in the gene coding for protein disulfide isomerase A3 (PDIA3, also known as ERp57), an enzyme that catalyzes formation of disulfide bonds in the endoplasmic reticulum, to be associated with syndromic intellectual disability. Experiments in zebrafish embryos show that PDIA3C57Y expression is pathogenic and causes developmental defects such as axonal disorganization as well as skeletal abnormalities. Expression of PDIA3C57Y in the mouse hippocampus results in impaired synaptic plasticity and memory consolidation. Proteomic and functional analyses reveal that PDIA3C57Y expression leads to dysregulation of cell adhesion and actin cytoskeleton dynamics, associated with altered integrin biogenesis and reduced neuritogenesis. Biochemical studies show that PDIA3C57Y has decreased catalytic activity and forms disulfide-crosslinked aggregates that abnormally interact with chaperones in the endoplasmic reticulum. Thus, rare disease gene variant can provide insight into how perturbations of neuronal proteostasis can affect the function of the nervous system.
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Wei W, Wang S, Xu C, Zhou X, Lian X, He L, Li K. Gut microbiota, pathogenic proteins and neurodegenerative diseases. Front Microbiol 2022; 13:959856. [PMID: 36466655 PMCID: PMC9715766 DOI: 10.3389/fmicb.2022.959856] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/07/2022] [Indexed: 12/20/2023] Open
Abstract
As the world's population ages, neurodegenerative diseases (NDs) have brought a great burden to the world. However, effective treatment measures have not been found to alleviate the occurrence and development of NDs. Abnormal accumulation of pathogenic proteins is an important cause of NDs. Therefore, effective inhibition of the accumulation of pathogenic proteins has become a priority. As the second brain of human, the gut plays an important role in regulate emotion and cognition functions. Recent studies have reported that the disturbance of gut microbiota (GM) is closely related to accumulation of pathogenic proteins in NDs. On the one hand, pathogenic proteins directly produced by GM are transmitted from the gut to the central center via vagus nerve. On the other hand, The harmful substances produced by GM enter the peripheral circulation through intestinal barrier and cause inflammation, or cross the blood-brain barrier into the central center to cause inflammation, and cytokines produced by the central center cause the production of pathogenic proteins. These pathogenic proteins can produced by the above two aspects can cause the activation of central microglia and further lead to NDs development. In addition, certain GM and metabolites have been shown to have neuroprotective effects. Therefore, modulating GM may be a potential clinical therapeutic approach for NDs. In this review, we summarized the possible mechanism of NDs caused by abnormal accumulation of pathogenic proteins mediated by GM to induce the activation of central microglia, cause central inflammation and explore the therapeutic potential of dietary therapy and fecal microbiota transplantation (FMT) in NDs.
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Affiliation(s)
- Wei Wei
- The Mental Hospital of Yunnan Province, Mental Health Center Affiliated to Kunming Medical University, Kunming, China
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Shixu Wang
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Chongchong Xu
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Xuemei Zhou
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Xinqing Lian
- School of Forensic Medicine, Kunming Medical University, Kunming, China
| | - Lin He
- The Mental Hospital of Yunnan Province, Mental Health Center Affiliated to Kunming Medical University, Kunming, China
| | - Kuan Li
- School of Forensic Medicine, Kunming Medical University, Kunming, China
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Rinaldo N, Gualdi‐Russo E, Khyatti M, Lakhoua C, Toselli S. Psychosocial health and quality of life among North African women. HEALTH & SOCIAL CARE IN THE COMMUNITY 2022; 30:1827-1837. [PMID: 34519114 PMCID: PMC9544681 DOI: 10.1111/hsc.13562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/16/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Studies on relationships between psychosocial factors and health among North African (NA) women are scarce. This research investigated the self-perceived psychosocial well-being of NA women by a structured questionnaire and anthropometric survey examining the possible explanatory variables of their mental health in comparison to a sample of NA migrants. The association of endogenous stress, psychological well-being, discomfort, and quality of life with migrant/non-migrant status, demographic characteristics, and adiposity indices was examined. Moreover, the internal consistency of the questionnaire was tested using Cronbach's alpha. A sample of 228 women living in Tunis and Casablanca participated in a survey in Tunisia and Morocco. According to multiple regression models, migrant/non-migrant status was the best explanatory variable of well-being and quality of life, marital status, educational level and the number of children were explanatory variables of discomfort and endogenous stress. Among anthropometric variables, central adiposity was a significant explanatory variable of well-being. The comparison with women who migrated mainly from Morocco and Tunisia to Italy (NA migrants) exhibited higher weight status and central adiposity in NA migrants. The perceived stress and discomfort were the same in the two groups; the migrants, despite reporting lower psychological well-being, presented a higher quality of life than residents. Our findings emphasise the potential to promote monitoring of the psychosocial health of NA women, planning effective interventions.
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Affiliation(s)
- Natascia Rinaldo
- Department of Neuroscience and RehabilitationUniversity of FerraraFerraraItaly
| | | | | | | | - Stefania Toselli
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaBolognaItaly
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7
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Zhang H, Chen Y, Wang Z, Xie G, Liu M, Yuan B, Chai H, Wang W, Cheng P. Implications of Gut Microbiota in Neurodegenerative Diseases. Front Immunol 2022; 13:785644. [PMID: 35237258 PMCID: PMC8882587 DOI: 10.3389/fimmu.2022.785644] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/19/2022] [Indexed: 12/12/2022] Open
Abstract
The morbidity associated with neurodegenerative diseases (NDs) is increasing, posing a threat to the mental and physical quality of life of humans. The crucial effect of microbiota on brain physiological processes is mediated through a bidirectional interaction, termed as the gut–brain axis (GBA), which is being investigated in studies. Many clinical and laboratory trials have indicated the importance of microbiota in the development of NDs via various microbial molecules that transmit from the gut to the brain across the GBA or nervous system. In this review, we summarize the implications of gut microbiota in ND, which will be beneficial for understanding the etiology and progression of NDs that may in turn help in developing ND interventions and clinical treatments for these diseases.
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Affiliation(s)
- Haoming Zhang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yijia Chen
- School of Life Science, Fudan University, Shanghai, China
| | - Zifan Wang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Gaijie Xie
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Mingming Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
| | - Boyu Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Hongxia Chai
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Wei Wang
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
- *Correspondence: Wei Wang, ; Ping Cheng,
| | - Ping Cheng
- Innovative Institute of Animal Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- *Correspondence: Wei Wang, ; Ping Cheng,
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Ikanga J, Basterfield C, Taiwo Z, Bragg P, Bartlett A, Howard C, Robert S, Stringer AY. The Reliability of the African Neuropsychology Battery in Persons of African Descent. Arch Clin Neuropsychol 2022; 37:839-848. [PMID: 35136901 DOI: 10.1093/arclin/acac003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The African Neuropsychology Battery (ANB) includes eight culturally appropriate cognitive tests developed for use in the Congo and other sub-Saharan African populations. The current study examines the reliability of the ANB in three samples of participants of African descent. METHODS Subjects were recruited in the United States and the Congo to participate in three studies of ANB internal consistency reliability (Study 1), test-retest reliability (Study 2), and interrater reliability for the two ANB measures (i.e., Visuospatial Memory and Proverb Tests) requiring examiner ratings of response adequacy (Study 3). Subjects were administered ANB tests of visuospatial perception, language, memory, abstract reasoning, and problem solving. We calculated Cronbach's alpha, corrected item-total correlations and mean inter-item correlations for internal consistency, Pearson product-moment correlations and intraclass correlation coefficients for test-retest reliability, and intraclass correlation coefficients for interrater reliability. RESULTS The ANB tests had acceptable internal consistency (Cronbach's alphas ranging from .37 to .93). Across subtests, test-retest reliability coefficients ranged from .39 to .91, and intraclass correlation stability coefficients (ICCs) ranged from .39 to .82. Of the two ANB tests requiring interrater reliability, only the Proverb Test had a low ICC of .13, (confidence intervals: -.29 to .52). CONCLUSION The present study demonstrated that most ANB tests show adequate reliability in participants of African descent. However, the scoring criteria of the African Proverb Test require revision in order to improve the interrater reliability of the measure.
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Affiliation(s)
- Jean Ikanga
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA.,University of Kinshasa, School of Medicine, Department of Psychiatry, Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Candice Basterfield
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA
| | - Zinat Taiwo
- Georgia State University, Department of Psychology, Atlanta, Georgia, USA
| | - Princess Bragg
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA
| | - Alexandria Bartlett
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA
| | - Christopher Howard
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA
| | - Spencer Robert
- University of Michigan, Veteran Administration System, Department of Neurology, Ann Arbor, Michigan, USA
| | - Anthony Y Stringer
- Emory University School of Medicine, Department of Rehabilitation Medicine, Atlanta, Georgia, USA
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Saleh DA, Kassie S, Hassan A, Alsaadi T. Sudden unexpected death in epilepsy: A pilot study on neurologists' knowledge and experience in the Eastern Mediterranean region. Seizure 2021; 94:57-65. [PMID: 34864253 DOI: 10.1016/j.seizure.2021.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/25/2021] [Accepted: 11/18/2021] [Indexed: 01/08/2023] Open
Abstract
Background- Sudden unexpected death in epilepsy (SUDEP) is an important concern in patients with epilepsy who are otherwise healthy. Current knowledge of SUDEP and attitudes of neurologists in the Eastern Mediterranean Region (EMR) towards discussing SUDEP with their patients remain unknown. Objective- We aimed at assessing knowledge, attitudes and factors affecting SUDEP discussion practices of neurologists practicing in the EMR. Methodology- An electronic and paper-based survey was sent to 350 neurologists practicing in the EMR. They were questioned about the frequency, timing, and factors affecting their willingness to initiate SUDEP discussion. We also included questions about perceived patient reactions towards SUDEP discussions and neurologists' preferred way to provide SUDEP information to their patients. Results- We received 132 responses from the 350 surveys sent out (response rate 37.7%). Our results showed that only 1.5% of the neurologists discussed SUDEP with "most" of their patients and their caregivers while 55.3% "rarely" or "never" discussed it. Factors such as additional epilepsy training and more years of clinical experience did not significantly affect the frequency of SUDEP discussion (p = 0.329, p = 0.728). A significant negative association between the number of patients seen per year and the frequency of SUDEP discussion was seen (P= 0.046). Based on their selection of known risk factors, 81% of neurologists were considered as having insufficient knowledge of SUDEP. The top three perceived reactions by the neurologists on SUDEP discussion were distress (74.2%), anxiety (70.5%) and depression (65.9%). Most neurologists initiated SUDEP discussion by themselves and preferred brochures/pamphlets, websites and training sessions to provide SUDEP information. Conclusion- Neurologists in the EMR rarely discuss SUDEP, and have limited knowledge about its risk factors. Upon discussing SUDEP, they overwhelmingly receive negative reactions but not always. Based on our findings, we believe an unintended knowledge gap exists on part of the neurologists. This, coupled with a lack of trained epilepsy nurses and patient education material in regional languages can also be attributed to poor SUDEP discussion practices in the EMR.
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Affiliation(s)
- Dina Amin Saleh
- Division of Neurology, American Center for Psychiatry and Neurology, Abu Dhabi, UAE; Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Seada Kassie
- Division of Neurology, American Center for Psychiatry and Neurology, Abu Dhabi, UAE
| | - Abeera Hassan
- Division of Neurology, American Center for Psychiatry and Neurology, Abu Dhabi, UAE.
| | - Taoufik Alsaadi
- Division of Neurology, American Center for Psychiatry and Neurology, Abu Dhabi, UAE
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10
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Morris K, Nami M, Bolanos JF, Lobo MA, Sadri-Naini M, Fiallos J, Sanchez GE, Bustos T, Chintam N, Amaya M, Strand SE, Mayuku-Dore A, Sakibova I, Biso GMN, DeFilippis A, Bravo D, Tarhan N, Claussen C, Mercado A, Braun S, Yuge L, Okabe S, Taghizadeh-Hesary F, Kotliar K, Sadowsky C, Chandra PS, Tripathi M, Katsaros V, Mehling B, Noroozian M, Abbasioun K, Amirjamshidi A, Hossein-Zadeh GA, Naraghi F, Barzegar M, Asadi-Pooya AA, Sahab-Negah S, Sadeghian S, Fahnestock M, Dilbaz N, Hussain N, Mari Z, Thatcher RW, Sipple D, Sidhu K, Chopra D, Costa F, Spena G, Berger T, Zelinsky D, Wheeler CJ, Ashford JW, Schulte R, Nezami MA, Kloor H, Filler A, Eliashiv DS, Sinha D, DeSalles AAF, Sadanand V, Suchkov S, Green K, Metin B, Hariri R, Cormier J, Yamamoto V, Kateb B. Neuroscience20 (BRAIN20, SPINE20, and MENTAL20) Health Initiative: A Global Consortium Addressing the Human and Economic Burden of Brain, Spine, and Mental Disorders Through Neurotech Innovations and Policies. J Alzheimers Dis 2021; 83:1563-1601. [PMID: 34487051 DOI: 10.3233/jad-215190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Neurological disorders significantly impact the world's economy due to their often chronic and life-threatening nature afflicting individuals which, in turn, creates a global disease burden. The Group of Twenty (G20) member nations, which represent the largest economies globally, should come together to formulate a plan on how to overcome this burden. The Neuroscience-20 (N20) initiative of the Society for Brain Mapping and Therapeutics (SBMT) is at the vanguard of this global collaboration to comprehensively raise awareness about brain, spine, and mental disorders worldwide. This paper aims to provide a comprehensive review of the various brain initiatives worldwide and highlight the need for cooperation and recommend ways to bring down costs associated with the discovery and treatment of neurological disorders. Our systematic search revealed that the cost of neurological and psychiatric disorders to the world economy by 2030 is roughly $16T. The cost to the economy of the United States is $1.5T annually and growing given the impact of COVID-19. We also discovered there is a shortfall of effective collaboration between nations and a lack of resources in developing countries. Current statistical analyses on the cost of neurological disorders to the world economy strongly suggest that there is a great need for investment in neurotechnology and innovation or fast-tracking therapeutics and diagnostics to curb these costs. During the current COVID-19 pandemic, SBMT, through this paper, intends to showcase the importance of worldwide collaborations to reduce the population's economic and health burden, specifically regarding neurological/brain, spine, and mental disorders.
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Affiliation(s)
- Kevin Morris
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Mohammad Nami
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Iran.,Middle East Brain + Initiative, Los Angeles, CA, USA.,Neuroscience Center, Instituto de Investigaciones Científicas Servicios de Alta Tecnología, City of Knowledge, Panama City, Panama
| | - Joe F Bolanos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Maria A Lobo
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Melody Sadri-Naini
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - John Fiallos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Gilberto E Sanchez
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Teshia Bustos
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Nikita Chintam
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Marco Amaya
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Susanne E Strand
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Alero Mayuku-Dore
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Indira Sakibova
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Grace Maria Nicole Biso
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Alejandro DeFilippis
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Daniela Bravo
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Nevzat Tarhan
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Carsten Claussen
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Fraunhofer-Institute for Translational Research and Pharmacology, Hamburg, Germany
| | - Alejandro Mercado
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neurosurgery, Hospital Military Regional Mendoza, Mendoza, Argentina
| | | | - Louis Yuge
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Division of Bio-Environment Adaptation Sciences, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.,Cell Therapy Venture Company, Space Bio-Laboratories, Hiroshima, Japan
| | - Shigeo Okabe
- Brain Medical Science Collaboration Division, RIKEN Center for Brain Science Institution and Department: Cellular Neurobiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | | | - Konstantin Kotliar
- Department of Biomedical Engineering, Aachen University of Applied Sciences, Aachen, Germany
| | - Christina Sadowsky
- International Center for Spinal Cord Injury, Kennedy Krieger Institute-Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - P Sarat Chandra
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | | | - Vasileios Katsaros
- Department of Advanced Imaging Modalities, MRI Unit, General Anti-Cancer and Oncological Hospital of Athens "St. Savvas", Athens, Greece.,Departments of Neurosurgery and Neurology, National and Kapodistrian University of Athens, Athens, Greece.,Department of Neuroradiology, University College of London, London, UK
| | - Brian Mehling
- T-Neuro Pharma, Inc., Albuquerque, NM, USA.,StemVax LLC, Chesterland, OH, USA
| | - Maryam Noroozian
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Cognitive Neurology and Neuropsychiatry Division, Department of Psychiatry, Tehran University of Medical Sciences, Tehran, Iran
| | - Kazem Abbasioun
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Amirjamshidi
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Neurosurgery, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholam-Ali Hossein-Zadeh
- Middle East Brain + Initiative, Los Angeles, CA, USA.,National Brain Mapping Laboratory, Tehran, Iran
| | - Faridedin Naraghi
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Iranian Society for Brain Mapping & Therapeutics, Tehran, Iran
| | - Mojtaba Barzegar
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Intelligent Quantitative Bio-Medical Imaging, Tehran, Iran, and Medical Physics Department, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali A Asadi-Pooya
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Epilepsy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Jefferson Comprehensive Epilepsy Center, Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sajad Sahab-Negah
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad Iran.,Shefa Neuroscience Research Center, Khatam Alanbia Hospital, Tehran, Iran
| | - Saeid Sadeghian
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Pediatric Neurology, Golestan Medical, Educational, and Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | | | - Nesrin Dilbaz
- Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Namath Hussain
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - Zoltan Mari
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas, NV, USA
| | - Robert W Thatcher
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Applied Neuroscience Research Institute, St. Petersburg, FL, USA.,Applied Neuroscience, Inc., St. Petersburg, Fl, USA
| | - Daniel Sipple
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Fraunhofer-Institute for Translational Research and Pharmacology, Hamburg, Germany
| | - Kuldip Sidhu
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,CK Cell Technologies Pty Ltd, Norwest, NSW, Australia.,Faculty of Medicine, Centre for Healthy Brain Ageing, University of New South Wales, Sydney, NSW, Australia.,Society for Brain Mapping and Therapeutics-Sydney, Sydney, NSW, Australia
| | | | - Francesco Costa
- IRCCS Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | | | - Ted Berger
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,USC Department of Biomedical Engineering, Los Angeles, CA, USA
| | - Deborah Zelinsky
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,The Mind-Eye Institute, Northbrook, IL, USA
| | - Christopher J Wheeler
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Social Science Research Institute, Tokai University, Shibuya City, Tokyo, Japan
| | - J Wesson Ashford
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Psychiatry & Behavioural Neurosciences, McMaster University, Hamilton, ON, Canada
| | - Reinhard Schulte
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA
| | - M A Nezami
- Sahel Oncology LLC, Newport Beach, CA, USA
| | - Harry Kloor
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Beyond Imagination, Los Angeles, CA, USA
| | - Aaron Filler
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Institute for Nerve Medicine, Santa Monica, CA, USA
| | - Dawn S Eliashiv
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Department of Neurology, UCLA-David Geffen School of Medicine, Los Angeles, CA, USA
| | - Dipen Sinha
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA
| | - Antonio A F DeSalles
- Department of Neurosurgery, UCLA David Geffen School of Medicine, Los Angeles CA, USA.,NeuroSapiens - Rede D'Or São Luiz, Sao Paulo, Brazil.,Society for Brain Mapping and Therapeutics-Brazil, Sao Paulo, Brazil
| | - Venkatraman Sadanand
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Sergey Suchkov
- Applied Neuroscience, Inc., St. Petersburg, Fl, USA.,Society for Brain Mapping and Therapeutics-Russia, Moscow, Russia
| | - Ken Green
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA
| | - Barish Metin
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Department of Psychiatry, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - Robert Hariri
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,Celularity Corporation, Warren, NJ, USA.,Weill Cornell School of Medicine, Department of Neurosurgery, New York, NY, USA
| | - Jason Cormier
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Blue Horizon International, Hackensack, NJ, USA
| | - Vicky Yamamoto
- Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA.,Brain Mapping Foundation, Los Angeles, CA, USA.,USC Keck School of Medicine, The USC Caruso Department of Otolaryngology-Head and Neck Surgery, Los Angeles, CA, USA.,USC-Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Babak Kateb
- Middle East Brain + Initiative, Los Angeles, CA, USA.,Loma Linda University, School of Medicine, Loma Linda, CA, USA.,National Center for Nanobioelectronics, Los Angeles, CA, USA.,Brain Technology and Innovation Park, Los Angeles, CA, USA
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11
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Maina MB, Ahmad U, Ibrahim HA, Hamidu SK, Nasr FE, Salihu AT, Abushouk AI, Abdurrazak M, Awadelkareem MA, Amin A, Imam A, Akinrinade ID, Yakubu AH, Azeez IA, Mohammed YG, Adamu AA, Ibrahim HB, Bukar AM, Yaro AU, Goni BW, Prieto-Godino LL, Baden T. Two decades of neuroscience publication trends in Africa. Nat Commun 2021; 12:3429. [PMID: 34103514 PMCID: PMC8187719 DOI: 10.1038/s41467-021-23784-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 05/11/2021] [Indexed: 12/12/2022] Open
Abstract
Neuroscience research in Africa remains sparse. Devising new policies to boost Africa's neuroscience landscape is imperative, but these must be based on accurate data on research outputs which is largely lacking. Such data must reflect the heterogeneity of research environments across the continent's 54 countries. Here, we analyse neuroscience publications affiliated with African institutions between 1996 and 2017. Of 12,326 PubMed indexed publications, 5,219 show clear evidence that the work was performed in Africa and led by African-based researchers - on average ~5 per country and year. From here, we extract information on journals and citations, funding, international coauthorships and techniques used. For reference, we also extract the same metrics from 220 randomly selected publications each from the UK, USA, Australia, Japan and Brazil. Our dataset provides insights into the current state of African neuroscience research in a global context.
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Affiliation(s)
- M B Maina
- School of Life Sciences, University of Sussex, Brighton, UK.
- Biomedical Science Research and Training Centre, College of Medical Sciences, Yobe State University, Damaturu, Nigeria.
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK.
| | - U Ahmad
- Medical Genetics Laboratory, Genetics and Regenerative Medicine Research Centre, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Department of Anatomy, Faculty of Basic Medical Sciences, Bauchi State University, PMB 65, Gadau, Nigeria
| | - H A Ibrahim
- College of Medicine, Misr University for Science and Technology, Giza, Egypt
| | - S K Hamidu
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Department of Human Anatomy, Faculty of Basic Medical Sciences, Gombe State University, Gombe, Nigeria
| | - F E Nasr
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Faculty of Science, Alexandria University, Alexandria, Egypt
| | - A T Salihu
- Non-invasive Brain Stimulation and Neuroplasticity Laboratory, Department of Physiotherapy, School of Primary and Allied Healthcare, Faculty of Medicine Nursing and Health Sciences, Monash University, Melbourne, Australia
- Department of Physiotherapy, Hasiya Bayero Paediatric Hospital, Kano, Nigeria
| | - A I Abushouk
- Harvard Medical School, Harvard University, Boston, MA, USA
- Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - M Abdurrazak
- Sheka Primary Health Care Kumbotso, Kano, Nigeria
| | - M A Awadelkareem
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Faculty of Medical Laboratory Sciences, Al-Neelain University, Khartoum, Sudan
- UK Dementia Research Institute and Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Department of Neuroscience Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - A Amin
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
- Department of Physiology, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
| | - A Imam
- Department of Anatomy, Faculty of Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - I D Akinrinade
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - A H Yakubu
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Faculty of Pharmacy, University of Maiduguri, Maiduguri, Nigeria
| | - I A Azeez
- Department of Neuroscience Biomedicine and Movement Sciences, University of Verona, Verona, Italy
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Jos, Jos, Nigeria
| | - Y G Mohammed
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK
- Department of Human Anatomy, Faculty of Basic Medical Sciences, Gombe State University, Gombe, Nigeria
- Department of Biology, Neurobiology group, University of Konstanz, Baden Wurttemberg, Germany
| | - A A Adamu
- Department of Physiotherapy, Aminu Kano Teaching Hospital, Kano, Nigeria
| | - H B Ibrahim
- Department of Pharmacy, Federal Medical Centre, Katsina, Nigeria
| | - A M Bukar
- Centre for Visual Computing, University of Bradford, Bradford, UK
| | - A U Yaro
- College of Medical Sciences, University of Maiduguri, Maiduguri, Nigeria
| | - B W Goni
- Department of Medicine, Yobe State University Teaching Hospital Damaturu PMB 1072, Damaturu, Yobe State, Nigeria
| | - L L Prieto-Godino
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK.
- Francis Crick Institute, London, UK.
| | - T Baden
- School of Life Sciences, University of Sussex, Brighton, UK.
- TReND in Africa (www.TReNDinAfrica.org), Brighton, UK.
- Institute of Ophthalmic Research, University of Tübingen, Tübingen, Germany.
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12
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Lin Y, Xu Y, Feng H, You L, Dong J, Gao Z, Peng S, Deng Y, Wu P. Involuntary, forced or voluntary exercise can ameliorate the cognitive deficits by enhancing levels of hippocampal NMDAR1, pAMPAR1 and pCaMKII in a model of vascular dementia. Neurol Res 2021; 43:349-357. [PMID: 33393454 DOI: 10.1080/01616412.2020.1866351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Objectives: To investigate the effect on vascular dementia of involuntary exercise induced by functional electrical stimulation and of forced and voluntary exercise, focusing on the recovery of cognitive function and using a rat model of dementia.Methods: A demential model was created in Wistar rats who were then given forced exercise, allowed voluntary exercise (wheel running) or had exercise induced through functional electrical stimulation. Their responses were quantified using a Morris water maze and by measuring long-term potentiation in the hippocampus. Immunohistochemical staining was used to evaluate neurogenesis in the hippocampus and Nissl staining was applied to visualize viable neuron loss in the DG sector. In addition, the levels of NMDAR1, AMPAR1, pAMPAR1, pCaMKII, CaMKII, Bcl-2 and Bax in the hippocampus were assessed by western blotting.Results: All of the exercise groups showed a recovery of cognitive performance and improved long-term potentiation. The three modes of exercise all increased the number of DCX immunopositive cells and reduced losses of intact-appearing neurons in the hippocampal DG zones roughly equally. All proved about equally effective in increasing the levels of NMDAR1, pAMPAR1 and pCaMKII and increasing the Bcl-2/Bax ratio to protect neurons from apoptosis.Conclusion: Exercise induced by electrical stimulation has beneficial effects comparable to those of other types of exercise for alleviating the cognitive deficits of vascular dementia.
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Affiliation(s)
- Yangyang Lin
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yangfan Xu
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huiting Feng
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Longfei You
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Juntao Dong
- Department of Rehabilitation, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zunlin Gao
- Department of Rehabilitation, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Suiying Peng
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yujie Deng
- Department of Rehabilitation Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Peihui Wu
- Department of Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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13
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Spittel S, Kraus E, Maier A. Dementia Awareness Challenges in Sub-Saharan Africa: A Cross-Sectional Survey Conducted Among School Students in Ghana. Am J Alzheimers Dis Other Demen 2021; 36:15333175211055315. [PMID: 34985361 PMCID: PMC10581119 DOI: 10.1177/15333175211055315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The survey focuses on identifying dementia awareness challenges among Ghanaian school students. Data were generated in a cross-sectional survey (n = 1137). 9.3% of school students showed dementia awareness whilst the community respondents, representing both higher age and level of education, showed greater awareness (32.2%, P < .001). 45% of respondents believed in witchcraft and 57% were afraid of potentially being harmed by witchcraft. Age and education did not influence people's belief in witchcraft. Moreover, dementia symptoms were often mistaken for witchcraft, especially by those who had encountered a person accused of witchcraft: "swearing at others" (24%), displaying "memory loss" and "confused speech" (22%), "forgetfulness" and who was seen "roaming around" (19%). Lack of dementia awareness was particularly evident among school students whereas belief in witchcraft was similar in both respondent groups. There was a correlation between low dementia awareness rates and misinterpretation of dementia symptoms with attribution to witchcraft.
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Affiliation(s)
- Susanne Spittel
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Department of Neurology, Berlin, Germany
- Universität Bremen, Department of Health Care Research, Institute for Public Health and Nursing Research, Bremen, Germany
| | - Elke Kraus
- Alice-Salomon University of Applied Sciences, Berlin, Germany
| | - André Maier
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Department of Neurology, Berlin, Germany
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14
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Wei Q, Bai T, Brown EC, Xie W, Chen Y, Ji G, Ramasubbu R, Tian Y, Wang K. Thalamocortical connectivity in electroconvulsive therapy for major depressive disorder. J Affect Disord 2020; 264:163-171. [PMID: 32056746 DOI: 10.1016/j.jad.2019.11.120] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/28/2019] [Accepted: 11/28/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Electroconvulsive therapy (ECT) can lead to rapid and effective responses in major depressive disorder (MDD). However, the precise neural mechanisms of ECT for MDD are still unclear. Previous work has confirmed that thalamocortical circuits play an important role in emotion and cognition. However, the relationship between mechanisms of ECT for MDD and thalamocortical connectivity has not yet been investigated. METHOD Thalamocortical functional connectivity analysis was performed on resting-state functional magnetic resonance imaging (fMRI) data collected from 28 MDD patients both pre- and post-ECT treatment, as well as 20 healthy controls. The cortex was parceled into six regions of interest (ROIs), which were used as seeds to assess the functional connectivity between the cortex and each voxel in the thalamus. Then, functional connectivity between the identified thalamic subregions and the rest of the brain was quantified to better localize thalamocortical connectivity related to ECT. Structural connectivity among the functionally abnormal regions was also determined using probabilistic tractography from diffusion tensor imaging (DTI) data. RESULTS There was decreased parietal cortex-left pulvinar and left pulvinar-bilateral precuneus functional connectivity in post-ECT MDD patients, compared to pre-ECT MDD patients. Furthermore, functional connectivity strength of parietal cortex-left pulvinar and left pulvinar-bilateral precuneus was negative correlation with verbal fluency test scores in post-ECT MDD patients. No significant change was found in structural connectivity analysis. LIMITATIONS The sample size of our study was not large. CONCLUSION Our findings implicate that the specific abnormalities in thalamocortical circuit may be associated with cognitive impairment induced by ECT.
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Affiliation(s)
- Qiang Wei
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China
| | - Tongjian Bai
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China
| | - Elliot C Brown
- Charité-Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Neuroscience Research Center, Berlin Institute of Health, Berlin, Germany; Mathison Centre for Mental Health Research and Education, University of Calgary, Calgary, AB, Canada; Department of Psychiatry, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Wen Xie
- Anhui Mental Health Center, Hefei, China
| | - Yang Chen
- Anhui Mental Health Center, Hefei, China
| | - Gongjun Ji
- Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China
| | - Rajamannar Ramasubbu
- Mathison Centre for Mental Health Research and Education, University of Calgary, Calgary, AB, Canada; Department of Psychiatry, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Yanghua Tian
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.
| | - Kai Wang
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.
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15
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Barnabas W. Drug targeting strategies into the brain for treating neurological diseases. J Neurosci Methods 2019; 311:133-146. [DOI: 10.1016/j.jneumeth.2018.10.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 12/17/2022]
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16
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Pasquini L, Llibre Guerra J, Prince M, Chua KC, Prina AM. Neurological signs as early determinants of dementia and predictors of mortality among older adults in Latin America: a 10/66 study using the NEUROEX assessment. BMC Neurol 2018; 18:163. [PMID: 30285663 PMCID: PMC6168999 DOI: 10.1186/s12883-018-1167-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/26/2018] [Indexed: 01/12/2023] Open
Abstract
Background Neurodegenerative processes in the elderly damage the brain, leading to progressive, incapacitating cognitive, behavioral, and motor dysfunctions which culminate in dementia. Fully manifest dementia is likely to be preceded by the presence of neurological signs, which could serve as early determinants of dementia and predictors of mortality. The aims of this study were to assess the construct validity of a neurological battery assessed among older adults living in Latin America, and to test the association of groups of neurological signs with dementia cross-sectionally, and mortality longitudinally. Methods The 10/66 Dementia Research Group collected information on neurological symptoms via the NEUROEX assessment in population based surveys of older adults living in low and middle-income countries. Data from 10,856 adults participating in the baseline assessment of the 10/66 study and living in Cuba, Dominican Republic, Peru, Venezuela and Mexico were analysed. Exploratory and confirmatory analysis were used to explore dimensionality of neurological symptoms. Poisson regression analyses were used to link groups of neurological signs with dementia at baseline. Cox hazard regression models were used to explore the predictive validity of neurological signs with mortality at follow up. Results Exploratory and confirmatory factor analyses revealed four dimensions of neurological signs, which are associated with lesions of specific brain regions. The identified factors showed consistency with groups of neurological signs such as frontal, cerebellar, extrapyramidal, and more generalized gait disturbance signs. Regression analyses revealed that all groups of neurological signs were positively associated with dementia at baseline and predicted mortality at follow up. Conclusions Our findings support the construct and predictive validity of the NEUROEX assessment, linking neurological and gait impairments with dementia at baseline, and with mortality at follow up among older adults living in five Latin American countries. Electronic supplementary material The online version of this article (10.1186/s12883-018-1167-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lorenzo Pasquini
- Memory and Aging Center, Department of Neurology, University of California San Francisco, 675 Nelson Rising Lane, San Francisco, CA, 94143, USA.
| | - Jorge Llibre Guerra
- Global Brain Health Institute, Memory and Aging Center, University of California San Francisco, 675 Nelson Rising Lane, San Francisco, CA, 94143, USA.,Neurology and Neurosurgery Institute, 139 Calle 29, 10400, Havana, Cuba
| | - Martin Prince
- King's College London, Health Service and Population Research Department, Centre for Global Mental Health, Institute of Psychiatry, Psychology & Neuroscience, De Crespigny Park, London, SE5 8AF, UK
| | - Kia-Chong Chua
- King's College London, Health Service and Population Research Department, Centre for Global Mental Health, Institute of Psychiatry, Psychology & Neuroscience, De Crespigny Park, London, SE5 8AF, UK
| | - A Matthew Prina
- King's College London, Health Service and Population Research Department, Centre for Global Mental Health, Institute of Psychiatry, Psychology & Neuroscience, De Crespigny Park, London, SE5 8AF, UK
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17
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Zhou Y, Slachevasky A, Calvo E. Health conditions and unmet needs for assistance to perform activities of daily living among older adults with dementia in Chile. Int J Geriatr Psychiatry 2018; 33:964-971. [PMID: 29570856 DOI: 10.1002/gps.4879] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 01/23/2018] [Indexed: 11/07/2022]
Abstract
OBJECTIVE This study aims to address gaps in health conditions and unmet needs in daily activities between people with dementia (PWD) and without dementia in a developing country and to identify the variables associated with unmet needs among PWD to guide practitioners and policymakers in dealing with an increased burden of dementia. METHODS Nationally representative data on 4655 Chileans age 60 and over were used to compare health conditions and unmet needs in daily life activities between individuals with (N = 455, 9.6%) and without dementia. Regression analysis was conducted to identify the variables associated with unmet needs among PWD. RESULTS Overall, PWD had worse health and needed greater assistance in performing daily activities than people without dementia. Among PWD, being male was associated with more unmet needs, in both activities of daily living (ADL) and instrumental ADL. Lower educational level and fewer caregivers were associated with more unmet needs for ADL, while inferior functional ability was associated with more unmet needs for instrumental ADL. CONCLUSIONS The results from this study call for action by practitioners and policymakers to foster caregiver training, increase supportive services, and advance care planning for PWD.
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Affiliation(s)
- Yi Zhou
- Environment and Health Group, Cambridge, MA, USA.,Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Andrea Slachevasky
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile.,Laboratory of Neuropsychology and Clinical Neuroscience (LANNEC), Physiopathology Program-ICBM, East Neurologic and Neurosciences Departments, Faculty of Medicine, University of Chile, Santiago, Chile.,Neuropsychiatry and Memory Disorders clinic (CMYN), Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile.,Centre for Advanced Research in Education, Santiago, Chile.,Servicio de Neurología, Departamento de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
| | - Esteban Calvo
- Department of Epidemiology and Robert N. Butler Columbia Aging Center, Columbia University, New York, NY, USA.,Center for Public Policy Research and Laboratory on Aging and Social Epidemiology, Universidad Mayor, Santiago, Chile
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18
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Morel GR, León ML, Uriarte M, Reggiani PC, Goya RG. Therapeutic potential of IGF-I on hippocampal neurogenesis and function during aging. NEUROGENESIS 2016; 4:e1259709. [PMID: 28405590 DOI: 10.1080/23262133.2016.1259709] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/03/2016] [Accepted: 11/05/2016] [Indexed: 10/20/2022]
Abstract
In rats, learning and memory performance decline during normal aging, which is paralleled by a severe reduction of the levels of neurogenesis in the hippocampal dentate gyrus (DG). A promising therapeutic strategy to restore neurogenesis in the hippocampus of old rats and their spatial memory involves the use of insulin-like growth factor-I (IGF-I). The peptide exerts pleiotropic effects in the brain, regulating multiple cellular processes. Thus, 4-week intracerebroventricular (ICV) perfusion of IGF-I significantly restored spatial memory and hippocampal neurogenesis in old male rats. Similar results were achieved by ICV IGF-I gene therapy in aging female rats. Thus, the treatment seemed to increase the number of immature neurons in the DG of 28 mo old rats, which was paralleled by an increase in the accuracy of the animals to remember specific patterns, which is known as pattern separation memory. The DG is thought to be the main hippocampal structure involved in pattern separation memory and there is evidence that the level of neurogenesis in the DG is directly related to pattern separation performance in rodents. Summing up, IGF-I emerges as a promising restorative molecule for increasing hippocampal neurogenesis and memory accuracy in aged individuals and possibly, in neurodegenerative pathologies.
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Affiliation(s)
- Gustavo R Morel
- INIBIOLP- Histology B - Pathology B; School of Medicine, UNLP , La Plata, Argentina
| | - Micaela López León
- INIBIOLP- Histology B - Pathology B; School of Medicine, UNLP , La Plata, Argentina
| | - Maia Uriarte
- INIBIOLP- Histology B - Pathology B; School of Medicine, UNLP , La Plata, Argentina
| | - Paula C Reggiani
- INIBIOLP- Histology B - Pathology B; School of Medicine, UNLP , La Plata, Argentina
| | - Rodolfo G Goya
- INIBIOLP- Histology B - Pathology B; School of Medicine, UNLP , La Plata, Argentina
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19
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Scott EM, Halees A, Itan Y, Spencer EG, He Y, Azab MA, Gabriel SB, Belkadi A, Boisson B, Abel L, Clark AG, Alkuraya FS, Casanova JL, Gleeson JG. Characterization of Greater Middle Eastern genetic variation for enhanced disease gene discovery. Nat Genet 2016; 48:1071-6. [PMID: 27428751 PMCID: PMC5019950 DOI: 10.1038/ng.3592] [Citation(s) in RCA: 262] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 05/20/2016] [Indexed: 12/19/2022]
Abstract
The Greater Middle East (GME) has been a central hub of human migration and population admixture. The tradition of consanguinity, variably practiced in the Persian Gulf region, North Africa, and Central Asia, has resulted in an elevated burden of recessive disease. Here we generated a whole-exome GME variome from 1,111 unrelated subjects. We detected substantial diversity and admixture in continental and subregional populations, corresponding to several ancient founder populations with little evidence of bottlenecks. Measured consanguinity rates were an order of magnitude above those in other sampled populations, and the GME population exhibited an increased burden of runs of homozygosity (ROHs) but showed no evidence for reduced burden of deleterious variation due to classically theorized 'genetic purging'. Applying this database to unsolved recessive conditions in the GME population reduced the number of potential disease-causing variants by four- to sevenfold. These results show variegated genetic architecture in GME populations and support future human genetic discoveries in Mendelian and population genetics.
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Affiliation(s)
- Eric M Scott
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,Rady Children's Institute for Genomic Medicine, Department of Neurosciences, University of California, San Diego, La Jolla, California, USA.,Laboratory for Pediatric Brain Disease, Rockefeller University, New York, New York, USA
| | - Anason Halees
- Department of Biostatistics, Epidemiology and Scientific Computing, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Yuval Itan
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, New York, USA
| | - Emily G Spencer
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,Rady Children's Institute for Genomic Medicine, Department of Neurosciences, University of California, San Diego, La Jolla, California, USA.,Laboratory for Pediatric Brain Disease, Rockefeller University, New York, New York, USA
| | - Yupeng He
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,Rady Children's Institute for Genomic Medicine, Department of Neurosciences, University of California, San Diego, La Jolla, California, USA.,Laboratory for Pediatric Brain Disease, Rockefeller University, New York, New York, USA
| | - Mostafa Abdellateef Azab
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,Rady Children's Institute for Genomic Medicine, Department of Neurosciences, University of California, San Diego, La Jolla, California, USA.,Laboratory for Pediatric Brain Disease, Rockefeller University, New York, New York, USA
| | - Stacey B Gabriel
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Aziz Belkadi
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, INSERM, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Bertrand Boisson
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, New York, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, INSERM, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Laurent Abel
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, New York, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, INSERM, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France
| | - Andrew G Clark
- Department of Molecular Biology and Genetics, Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, New York, USA
| | | | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia.,Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Jean-Laurent Casanova
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, New York, USA.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Necker Hospital for Sick Children, INSERM, Paris, France.,Paris Descartes University, Imagine Institute, Paris, France.,Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, Paris, France
| | - Joseph G Gleeson
- Howard Hughes Medical Institute, Rockefeller University, New York, New York, USA.,Rady Children's Institute for Genomic Medicine, Department of Neurosciences, University of California, San Diego, La Jolla, California, USA.,Laboratory for Pediatric Brain Disease, Rockefeller University, New York, New York, USA
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20
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Aparicio-Blanco J, Martín-Sabroso C, Torres-Suárez AI. In vitro screening of nanomedicines through the blood brain barrier: A critical review. Biomaterials 2016; 103:229-255. [PMID: 27392291 DOI: 10.1016/j.biomaterials.2016.06.051] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/14/2016] [Accepted: 06/20/2016] [Indexed: 12/16/2022]
Abstract
The blood-brain barrier accounts for the high attrition rate of the treatments of most brain disorders, which therefore remain one of the greatest health-care challenges of the twenty first century. Against this background of hindrance to brain delivery, nanomedicine takes advantage of the assembly at the nanoscale of available biomaterials to provide a delivery platform with potential to raising brain levels of either imaging or therapeutic agents. Nevertheless, to prevent later failure due to ineffective drug levels at the target site, researchers have been endeavoring to develop a battery of in vitro screening procedures that can predict earlier in the drug discovery process the ability of these cutting-edge drug delivery platforms to cross the blood-brain barrier for biomedical purposes. This review provides an in-depth analysis of the currently available in vitro blood-brain barrier models (both cell-based and non-cell-based) with the focus on their suitability for understanding the biological brain distribution of forthcoming nanomedicines. The relationship between experimental factors and underlying physiological assumptions that would ultimately lead to a more predictive capacity of their in vivo performance, and those methods already assayed for the evaluation of the brain distribution of nanomedicines are comprehensively discussed.
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Affiliation(s)
- Juan Aparicio-Blanco
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Complutense University, 28040, Madrid, Spain
| | - Cristina Martín-Sabroso
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Complutense University, 28040, Madrid, Spain
| | - Ana-Isabel Torres-Suárez
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Complutense University, 28040, Madrid, Spain; University Institute of Industrial Pharmacy, Complutense University, 28040, Madrid, Spain.
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21
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Peri E, Ambrosini E, Pedrocchi A, Ferrigno G, Nava C, Longoni V, Monticone M, Ferrante S. Can FES-Augmented Active Cycling Training Improve Locomotion in Post-Acute Elderly Stroke Patients? Eur J Transl Myol 2016; 26:6063. [PMID: 27990234 PMCID: PMC5128967 DOI: 10.4081/ejtm.2016.6063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Recent studies advocated the use of active cycling coupled with functional electrical stimulation to induce neuroplasticity and enhance functional improvements in stroke adult patients. The aim of this work was to evaluate whether the benefits induced by such a treatment are superior to standard physiotherapy. A single-blinded randomized controlled trial has been performed on post-acute elderly stroke patients. Patients underwent FES-augmented cycling training combined with voluntary pedaling or standard physiotherapy. The intervention consisted of fifteen 30-minutes sessions carried out within 3 weeks. Patients were evaluated before and after training, through functional scales, gait analysis and a voluntary pedaling test. Results were compared with an age-matched healthy group. Sixteen patients completed the training. After treatment, a general improvement of all clinical scales was obtained for both groups. Only the mechanical efficiency highlighted a group effect in favor of the experimental group. Although a group effect was not found for any other cycling or gait parameters, the experimental group showed a higher percentage of change with respect to the control group (e.g. the gait velocity was improved of 35.4% and 25.4% respectively, and its variation over time was higher than minimal clinical difference for the experimental group only). This trend suggests that differences in terms of motor recovery between the two groups may be achieved increasing the training dose. In conclusion, this study, although preliminary, showed that FES-augmented active cycling training seems to be effective in improving cycling and walking ability in post-acute elderly stroke patients. A higher sample size is required to confirm results.
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Affiliation(s)
- Elisabetta Peri
- Nearlab, Department of Electronics Informatics and Bioengineering, Politecnico di Milano , Milano, Italy
| | - Emilia Ambrosini
- Nearlab, Department of Electronics Informatics and Bioengineering, Politecnico di Milano, Milano, Italy; Physical Medicine and Rehabilitation Unit, Scientific Institute of Lissone, S. Maugeri Foundation, IRCCS, Lissone, Italy
| | - Alessandra Pedrocchi
- Nearlab, Department of Electronics Informatics and Bioengineering, Politecnico di Milano , Milano, Italy
| | - Giancarlo Ferrigno
- Nearlab, Department of Electronics Informatics and Bioengineering, Politecnico di Milano , Milano, Italy
| | - Claudia Nava
- Physical Medicine and Rehabilitation Unit, Scientific Institute of Lissone, S. Maugeri Foundation, IRCCS , Lissone, Italy
| | - Valentina Longoni
- Physical Medicine and Rehabilitation Unit, Scientific Institute of Lissone, S. Maugeri Foundation, IRCCS , Lissone, Italy
| | - Marco Monticone
- Physical Medicine and Rehabilitation Unit, Scientific Institute of Lissone, S. Maugeri Foundation, IRCCS , Lissone, Italy
| | - Simona Ferrante
- Nearlab, Department of Electronics Informatics and Bioengineering, Politecnico di Milano , Milano, Italy
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22
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Pardo J, Uriarte M, Cónsole GM, Reggiani PC, Outeiro TF, Morel GR, Goya RG. Insulin-like growth factor-I gene therapy increases hippocampal neurogenesis, astrocyte branching and improves spatial memory in female aging rats. Eur J Neurosci 2016; 44:2120-8. [PMID: 27188415 DOI: 10.1111/ejn.13278] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/24/2016] [Accepted: 05/10/2016] [Indexed: 11/29/2022]
Abstract
In rats, learning and memory performance decline during aging, which makes this rodent species a suitable model to evaluate therapeutic strategies of potential value for correcting age-related cognitive deficits. Some of these strategies involve neurotrophic factors like insulin-like growth factor-I (IGF-I), a powerful neuroprotective molecule in the brain. Here, we implemented 18-day long intracerebroventricular (ICV) IGF-I gene therapy in 28 months old Sprague-Dawley female rats, and assessed spatial memory performance in the Barnes maze. We also studied hippocampal morphology using an unbiased stereological approach. Adenovectors expressing the gene for rat IGF-I or the reporter DsRed were used. Cerebrospinal fluid (CSF) samples were taken and IGF-I levels determined by radioimmunoassay. At the end of the study, IGF-I levels in the CSF were significantly higher in the experimental group than in the DsRed controls. After treatment, the IGF-I group showed a significant improvement in spatial memory accuracy as compared with DsRed counterparts. In the dentate gyrus (DG) of the hippocampus, the IGF-I group showed a higher number of immature neurons than the DsRed controls. The treatment increased hippocampal astrocyte branching and reduced their number in the hippocampal stratum radiatum. We conclude that the ependymal route is an effective approach to increase CSF levels of IGF-I and that this strategy improves the accuracy of spatial memory in aging rats. The favorable effect of the treatment on DG neurogenesis and astrocyte branching in the stratum radiatum may contribute to improving memory performance in aging rats.
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Affiliation(s)
- Joaquín Pardo
- INIBIOLP-Pathology B, School of Medicine, UNLP, CC 455, 1900, La Plata, Argentina.,Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
| | - Maia Uriarte
- INIBIOLP-Pathology B, School of Medicine, UNLP, CC 455, 1900, La Plata, Argentina.,Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
| | - Gloria M Cónsole
- Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
| | - Paula C Reggiani
- INIBIOLP-Pathology B, School of Medicine, UNLP, CC 455, 1900, La Plata, Argentina.,Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
| | - Tiago F Outeiro
- Department of Neurodegeneration and Restorative Research, Center for Nanoscale Microscopy and Molecular Physiology of the Brain, University Medical Center Göttingen, Göttingen, Germany
| | - Gustavo R Morel
- INIBIOLP-Pathology B, School of Medicine, UNLP, CC 455, 1900, La Plata, Argentina.,Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
| | - Rodolfo G Goya
- INIBIOLP-Pathology B, School of Medicine, UNLP, CC 455, 1900, La Plata, Argentina.,Department of Histology and of Embryology B, School of Medicine, UNLP, La Plata, Argentina
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