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1. Evolving trends in neuropsychological profiles of post COVID-19 condition: A 1-year follow-up in individuals with cognitive complaints.

Author

Nicholas Grunden, Marco Calabria, Carmen García-Sánchez, Catalina Pons, Juan Antonio Arroyo, Beatriz Gómez-Ansón, Marina Del Carmen Estévez-García, Roberto Belvís, Noemí Morollón, Mónica Cordero-Carcedo, Isabel Mur, Virginia Pomar, and Pere Domingo

Subjects
Medicine, Science
Abstract

Cognitive difficulties are reported as lasting sequelae within post COVID-19 condition. However, the chronicity of these difficulties and related factors of fatigue, mood, and perceived health have yet to be fully determined. To address this, the current longitudinal study aimed to clarify the trends of cognitive test performance and cognitive domain impairment following COVID-19 onset, and whether hospitalization influences outcomes. 57 participants who reported subjective cognitive difficulties after confirmed COVID-19 infection were assessed at baseline (~6 months post COVID-19) and follow-up (~15 months later) visits. Assessments included measures across multiple cognitive domains and self-report questionnaires of fatigue, mood, and overall health. Analyses were conducted in three stages: at the test score level (raw and adjusted scores), at the cognitive domain level, and stratified by hospitalization status during infection. Results at the test-score level indicate that cognitive performance remains relatively stable across assessments at the group level, with no significant improvements in any adjusted test scores at follow-up. Cognitive domain analyses indicate significant reductions in attention and executive functioning impairment, while memory impairment is slower to resolve. On self-report measures, there was a significant improvement in overall health ratings at follow-up. Finally, those hospitalized during infection performed worse on timed cognitive measures across visits and accounted for a larger proportion of cases with short-term and working memory impairment at follow-up. Overall, our findings indicate that cognitive difficulties persist both at test score and cognitive domain levels in many cases of post COVID-19 condition, but evidence suggests some improvement in global measures of attention, executive functioning and overall self-rated health. Furthermore, an effect of hospitalization on cognitive symptoms post COVID-19 may be more discernible over time.

Published
2024
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2. The Free and Cued Selective Reminding Test in Parkinson's Disease Mild Cognitive Impairment: Discriminative Accuracy and Neural Correlates

Author

Andrea Horta-Barba, Javier Pagonabarraga, Saül Martínez-Horta, Juan Marín-Lahoz, Frederic Sampedro, Ramón Fernández-Bobadilla, M. Ángeles Botí, Helena Bejr-Kasem, Ignacio Aracil-Bolaños, Jesus Pérez-Pérez, Berta Pascual-Sedano, Antonia Campolongo, Cristina Izquierdo, Beatriz Gómez-Ansón, and Jaime Kulisevsky

Subjects
PD-MCI, Free and Cued Selective Reminding Rest, Parkinson's disease, memory, episodic memory, Neurology. Diseases of the nervous system, RC346-429
Abstract

Introduction: Memory alterations are common in Parkinson's disease (PD) patients but the mechanisms involved in these deficits remain poorly understood. The study aims to explore the profile of episodic memory deficits in non-demented early PD patients.Methods: We obtained neurological, cognitive and behavioral data from 114 PD patients and 41 healthy controls (HC). PD participants were grouped as normal cognition (PD-NC) and mild cognitive impairment (PD-MCI) according to the Level II criteria of the Movement Disorders Society Task Force (MDS-TF). We evaluate the performance amongst groups on an episodic memory task using the Free and Cued Selective Reminding Test (FCSRT). Additionally, gray matter volume (GMV) voxel based morphometry, and mean diffusivity (MD) analyses were conducted in a subset of patients to explore the structural brain correlates of FCSRT performance.Results: Performance on all subscores of the FCSRT was significantly worse in PD-MCI than in PD-NC and HC. Delayed total recall (DTR) subscore was the best at differentiating PD-NC from PD-MCI. Using crosstabulation, DTR allowed identification of PD-MCI patients with an accuracy of 80%. Delayed free and cued recall was associated with decreased GMV and increased MD in multiple fronto-temporal and parietal areas.Conclusion: Encoding and retrieval deficits are a main characteristic of PD-MCI and are associated with structural damage in temporal, parietal and prefrontal areas.

Published
2020
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3. Increased plasma neurofilament light chain levels in patients with type-1 diabetes with impaired awareness of hypoglycemia

Author

Frederic Sampedro, Nicole Stantonyonge, Saül Martínez-Horta, Rocío Pérez-González, Juan Marín-Lahoz, Beatriz Gómez-Ansón, and Ana Chico

Subjects
Diseases of the endocrine glands. Clinical endocrinology, RC648-665
Abstract

Introduction Impaired awareness of hypoglycemia (IAH) is a common complication in patients with type-1 diabetes (T1D). IAH is a major risk factor for severe hypoglycemic events, leading to adverse clinical consequences and cerebral damage. Non-invasive, cost-effective, and logistically efficient biomarkers for this condition have not been validated. Here, we propose plasma neurofilament light chain (NfL) levels as a biomarker of neuroaxonal damage in patients with T1D-IAH.Research design and methods 54 patients were included into the study (18 T1D-IAH, 18 T1D with normal awareness of hypoglycemia (NAH) and 18 healthy controls). We measured plasma NfL levels and studied cerebral gray matter alterations on MRI.Results We found that NfL levels were increased in patients with T1D-IAH compared with patients with T1D-NAH and healthy controls. Importantly, increased NfL levels correlated with reduced cerebral gray matter volume and increased IAH severity in patients with T1D-IAH.Conclusion Overall, our findings identify plasma NfL levels as a potential biomarker of cerebral damage in this population, motivating further confirmatory studies with potential implications in clinical trials.

Published
2020
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4. Alterations in cerebral white matter and neuropsychology in patients with cirrhosis and falls.

Author

Beatriz Gómez-Ansón, Eva Román, Ramón Fernández de Bobadilla, Patricia Pires-Encuentra, Jordi Díaz-Manera, Fidel Núñez, Saül Martinez-Horta, Yolanda Vives-Gilabert, Javier Pagonabarraga, Jaume Kulisevsky, Juan Cordoba, Carlos Guarner, and Germán Soriano

Subjects
Medicine, Science
Abstract

Background & aimFalls are frequent in patients with cirrhosis but underlying mechanisms are unknown. The aim was to determine the neuropsychological, neurological and brain alterations using magnetic resonance-diffusion tensor imaging (MR-DTI) in cirrhotic patients with falls.Patients and methodsTwelve patients with cirrhosis and falls in the previous year were compared to 9 cirrhotic patients without falls. A comprehensive neuropsychological and neurological evaluation of variables that may predispose to falls included: the Mini-Mental State Examination, Psychometric Hepatic Encephalopathy Score (PHES), Parkinson's Disease-Cognitive Rating Scale, specific tests to explore various cognitive domains, Unified Parkinson's Disease Rating Scale to evaluate parkinsonism, scales for ataxia and muscular strength, and electroneurography. High-field MR (3T) including DTI and structural sequences was performed in all patients.ResultsThe main neuropsychological findings were impairment in PHES (p = 0.03), Parkinson's Disease-Cognitive Rating Scale (p = 0.04) and in executive (pConclusionsWith the limitation of the small sample size, our results suggest that patients with cirrhosis and falls present alterations in brain white matter tracts related to executive dysfunction. These alterations are independent of PHES impairment.

Published
2015
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5. Pattern of regional cortical thinning associated with cognitive deterioration in Parkinson's disease.

Author

Javier Pagonabarraga, Idoia Corcuera-Solano, Yolanda Vives-Gilabert, Gisela Llebaria, Carmen García-Sánchez, Berta Pascual-Sedano, Manuel Delfino, Jaime Kulisevsky, and Beatriz Gómez-Ansón

Subjects
Medicine, Science
Abstract

BACKGROUND: Dementia is a frequent and devastating complication in Parkinson's disease (PD). There is an intensive search for biomarkers that may predict the progression from normal cognition (PD-NC) to dementia (PDD) in PD. Mild cognitive impairment in PD (PD-MCI) seems to represent a transitional state between PD-NC and PDD. Few studies have explored the structural changes that differentiate PD-NC from PD-MCI and PDD patients. OBJECTIVES AND METHODS: We aimed to analyze changes in cortical thickness on 3.0T Magnetic Resonance Imaging (MRI) across stages of cognitive decline in a prospective sample of PD-NC (n = 26), PD-MCI (n = 26) and PDD (n = 20) patients, compared to a group of healthy subjects (HC) (n = 18). Cortical thickness measurements were made using the automatic software Freesurfer. RESULTS: In a sample of 72 PD patients, a pattern of linear and progressive cortical thinning was observed between cognitive groups in cortical areas functionally specialized in declarative memory (entorhinal cortex, anterior temporal pole), semantic knowledge (parahippocampus, fusiform gyrus), and visuoperceptive integration (banks of the superior temporal sulcus, lingual gyrus, cuneus and precuneus). Positive correlation was observed between confrontation naming and thinning in the fusiform gyrus, parahippocampal gyrus and anterior temporal pole; clock copy with thinning of the precuneus, parahippocampal and lingual gyrus; and delayed memory with thinning of the bilateral anteromedial temporal cortex. CONCLUSIONS: The pattern of regional decreased cortical thickness that relates to cognitive deterioration is present in PD-MCI patients, involving areas that play a central role in the storage of prior experiences, integration of external perceptions, and semantic processing.

Published
2013
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6. Development of imaging-based risk scores for prediction of intracranial haemorrhage and ischaemic stroke in patients taking antithrombotic therapy after ischaemic stroke or transient ischaemic attack: a pooled analysis of individual patient data from cohort studies

Author

Henry Ma, Eleni Sakka, Hugues Chabriat, Duncan Wilson, Appu Suman, Peter J. Kelly, SL Ho, Charlotte Zerna, Eric Jouvent, Lawrence K.S. Wong, Anthea Parry, Frances Harrington, Jan Stam, Christopher Patterson, Rustam Al-Shahi Salman, Shigeru Inamura, Krishna A Dani, Henry Houlden, Sebastian Thilemann, Kotaro Iida, Chao Xu, Eunbin Ko, Daniel Guisado-Alonso, Urs Fischer, Caroline E. Lovelock, Man Yu Tse, Wing Chi Fong, Azlisham Mohd Nor, Clare Shakeshaft, Philippe Maeder, Henrik Gensicke, Stefan T. Engelter, James Okwera, Christopher Chen, Dulka Manawadu, John F. Corrigan, Efrat Kliper, Shelagh B. Coutts, Alexander P. Leff, Kam Tat Leung, Chathuri Yatawara, Leopold Hertzberger, M. Eline Kooi, Kazuhisa Yoshifuji, Hing Lung Ip, Keon-Joo Lee, Sanjeevikumar Meenakishundaram, Hiroyuki Irie, Marc Randall, Hatice Ozkan, Hideo Hara, Jill Abrigo, Raquel Delgado-Mederos, Shaloo Singhal, Enrico Flossmann, Beatriz Gómez-Ansón, Paul O'Mahony, Carmen Barbato, Ahamad Hassan, Francesca M Chappell, Harald Proschel, Vincent Mok, Masashi Nishihara, Lakshmanan Sekaran, Derya Selcuk Demirelli, Chu Peng Hoi, Hakan Ay, Joan Martí-Fàbregas, Rebeca Marín, Anne Cristine Guevarra, Martin Cooper, Einor Ben Assayag, Anne-Marie Mendyk, Christine Roffe, Myung Suk Jang, Maarten van Gemert, Hannah Cohen, Jae-Sung Lim, YK Wong, Bonnie Y.K. Lam, Janet Putterill, Wouter Schoonewille, Nick S. Ward, Nikola Sprigg, Kui Kai Lau, Bernard Esisi, Peter M. Rothwell, Henk Verbiest, Kirsty Harkness, Elisa Merino, Gareth Ambler, Arumug Nallasivam, Nigel Smyth, Paul A. Armitage, Heinrich Mattle, Pol Camps-Renom, Martin M. Brown, David Cohen, Min Lou, Pankaj Sharma, Sarah Gunkel, Elles Douven, Andreas Charidimou, Djamil Vahidassr, Cathy Soufan, Alexandros A Polymeris, Michael G. Hennerici, Chris Moran, Rachel Marsh, Mahmud Sajid, Kyohei Fujita, David J. Werring, Joanna M. Wardlaw, Derek Hayden, Joseph Kwan, Timothy J. England, Jaap van der Sande, Luis Prats-Sánchez, Paul Guyler, Ryan Hoi Kit Cheung, Koon-Ho Chan, Frank-Erik de Leeuw, Simone Browning, Jon Scott, Adrian Barry, Alejandro Martínez-Domeño, Luc Bracoub, Dinesh Chadha, Ijaz Anwar, Deborah Kelly, Moon-Ku Han, Anil M. Tuladhar, Thomas Gattringer, Fiona Carty, Abduelbaset Elmarim, Syed Mansoor, Enrico Flossman, Dilek Necioglu Orken, Jane Sword, Velandai Srikanth, Ping Wing Ng, Thomas W. Leung, Richard Shek-kwan Chang, Hans Rolf Jäger, Marwan El-Koussy, Jeroen Hendrikse, Khaled Darawil, Kazunori Toyoda, Mathuri Prabhakaran, Karim Mahawish, Ethem Murat Arsava, Jihoon Kang, Kwok Kui Wong, Michael Power, Felix Fluri, Enas Lawrence, Maam Mamun, Sissi Ispoglou, Mathew Burn, Siu Hung Li, Henry K.F. Mak, Kaori Miwa, Els De Schryver, Franz Fazekas, Jonathan G. Best, Louise Shaw, Hen Hallevi, Keith W. Muir, Ilse Burger, Adrian Wong, Nils Peters, Susana Muñoz-Maniega, Yusuke Yakushiji, David Calvet, Mark White, Michael McCormick, Vinodh Krishnamurthy, David Hargroves, Jan C. Purrucker, Tae Jin Song, Masayuki Shiozawa, Noortje A.M. Maaijwee, Prasanna Aghoram, Nicolas Christ, Lino Ramos, Yannie Soo, Thanh G. Phan, Parashkev Nachev, David J. Seiffge, Kim Wiegertjes, Leo H. Bonati, Chahin Pachai, Oi Ling Chan, Yvo B.W.E.M. Roos, Santiago Medrano-Martorell, Natan M. Bornstein, Elizabeth A. Warburton, Richard Li, Prabel Datta, Pascal P. Gratz, Edmund Ka Ming Wong, Hedley C. A. Emsley, Marie-Yvonne Douste-Blazy, Gunaratam Gunathilagan, Nagaendran Kandiah, Masatoshi Koga, Roland Veltkamp, Lee-Anne Slater, Suk Fung Tsang, Beom Joon Kim, Simon Jung, Zeynep Tanriverdi, Sarah Caine, Peter J. Koudstaal, Laurence Legrand, Kari Saastamoinen, Ale Algra, Jean-Louis Mas, Christine Delmaire, Fidel Nuñez, Robert J. van Oostenbrugge, Sebastian Eppinger, Lillian Choy, Robert Luder, Vincent I.H. Kwa, Aad van der Lugt, Marie Dominique Fratacci, Stephen Makin, Layan Akijian, Régis Bordet, Mi Hwa Yang, Ying Zhou, Elio Giallombardo, Adrian R Parry-Jones, John S. Thornton, Amos D. Korczyn, Narayanaswamy Venketasubramanian, David J. Williams, Aravindakshan Manoj, Julie Staals, Solveig Horstmann, Dianne H.K. van Dam-Nolen, Claire Cullen, Benjamin Wagner, Jun Tanaka, Martin Dennis, Stef Bakker, Gregory Y.H. Lip, L. Jaap Kappelle, Robin Lemmens, Achim Gass, David Mangion, Matthew Smith, Toshio Imaizumi, Wenyan Liu, Jeremy Molad, Christopher Price, Paul J. Nederkoorn, P. J. A. M. Brouwers, Vincent Thijs, Sze Ho Ma, Mark Schembri, Peter Wilkinson, Janice E. O’Connell, Karen Ma, John Ly, Leonidas Panos, Chung Yan Chan, Toshihiro Ide, Christopher Traenka, Joost Jöbsis, Gargi Banerjee, Paul Berntsen, Michael J. Thrippleton, Raymond T.F. Cheung, Christopher Karayiannis, Werner H. Mess, Robert Simister, Jayesh Modi Medanta, Syuhei Ikeda, John Mitchell, Linxin Li, Mauro S.B. Silva, Eric Vicaut, John Coyle, Shoichiro Sato, Michelle Davis, Jonathan Birns, Richard J. Perry, Sean M. Murphy, KC Teo, Maria del C. Valdés Hernández, Bibek Gyanwali, Tarek A. Yousry, Kath Pasco, Sebastian Köhler, Joachim Fladt, Edward S. Hui, Philippe Lyrer, Young Dae Kim, Anna K. Heye, Eric E. Smith, Saima Hilal, Ender Uysal, Ji Hoe Heo, Ysoline Beigneux, Cisca Linn, Hee-Joon Bae, Simon Leach, Winnie C.W. Chu, Ronil V. Chandra, Neurology, ACS - Atherosclerosis & ischemic syndromes, ANS - Neurovascular Disorders, MUMC+: HZC Med Staf Spec Klinische Neurofys (9), RS: Carim - B06 Imaging, MUMC+: HZC Klinische Neurofysiologie (5), Klinische Neurowetenschappen, Psychiatrie & Neuropsychologie, RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, MUMC+: MA Neurologie (3), RS: Carim - B05 Cerebral small vessel disease, MUMC+: Hersen en Zenuw Centrum (3), MUMC+: MA Med Staf Spec Neurologie (9), RS: NUTRIM - R1 - Obesity, diabetes and cardiovascular health, Beeldvorming, and MUMC+: DA BV Klinisch Fysicus (9)

Subjects
Adult, Male, Risk, EXTERNAL VALIDATION, medicine.medical_specialty, Neurology, MODELS, Clinical Neurology, 030204 cardiovascular system & hematology, 03 medical and health sciences, 0302 clinical medicine, Fibrinolytic Agents, Recurrence, Internal medicine, Antithrombotic, Humans, Medicine, Prospective cohort study, 610 Medicine & health, Stroke, METAANALYSIS, Aged, Ischemic Stroke, Science & Technology, medicine.diagnostic_test, business.industry, Proportional hazards model, Magnetic resonance imaging, Middle Aged, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], medicine.disease, Magnetic Resonance Imaging, Ischemic Attack, Transient, ATRIAL-FIBRILLATION, Cardiology, Female, Neurology (clinical), Neurosciences & Neurology, business, Intracranial Hemorrhages, Life Sciences & Biomedicine, 030217 neurology & neurosurgery, Fibrinolytic agent, Cohort study
Abstract

Contains fulltext : 235277.pdf (Publisher’s version ) (Closed access) BACKGROUND: Balancing the risks of recurrent ischaemic stroke and intracranial haemorrhage is important for patients treated with antithrombotic therapy after ischaemic stroke or transient ischaemic attack. However, existing predictive models offer insufficient performance, particularly for assessing the risk of intracranial haemorrhage. We aimed to develop new risk scores incorporating clinical variables and cerebral microbleeds, an MRI biomarker of intracranial haemorrhage and ischaemic stroke risk. METHODS: We did a pooled analysis of individual-patient data from the Microbleeds International Collaborative Network (MICON), which includes 38 hospital-based prospective cohort studies from 18 countries. All studies recruited participants with previous ischaemic stroke or transient ischaemic attack, acquired baseline MRI allowing quantification of cerebral microbleeds, and followed-up participants for ischaemic stroke and intracranial haemorrhage. Participants not taking antithrombotic drugs were excluded. We developed Cox regression models to predict the 5-year risks of intracranial haemorrhage and ischaemic stroke, selecting candidate predictors on biological relevance and simplifying models using backward elimination. We derived integer risk scores for clinical use. We assessed model performance in internal validation, adjusted for optimism using bootstrapping. The study is registered on PROSPERO, CRD42016036602. FINDINGS: The included studies recruited participants between Aug 28, 2001, and Feb 4, 2018. 15 766 participants had follow-up for intracranial haemorrhage, and 15 784 for ischaemic stroke. Over a median follow-up of 2 years, 184 intracranial haemorrhages and 1048 ischaemic strokes were reported. The risk models we developed included cerebral microbleed burden and simple clinical variables. Optimism-adjusted c indices were 0·73 (95% CI 0·69-0·77) with a calibration slope of 0·94 (0·81-1·06) for the intracranial haemorrhage model and 0·63 (0·62-0·65) with a calibration slope of 0·97 (0·87-1·07) for the ischaemic stroke model. There was good agreement between predicted and observed risk for both models. INTERPRETATION: The MICON risk scores, incorporating clinical variables and cerebral microbleeds, offer predictive value for the long-term risks of intracranial haemorrhage and ischaemic stroke in patients prescribed antithrombotic therapy for secondary stroke prevention; external validation is warranted. FUNDING: British Heart Foundation and Stroke Association.

Published
2021
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7. Widespread Increased Diffusivity Reveals Early Cortical Degeneration in Huntington Disease

Author

Jaume Kulisevsky, Jesús Pérez-Pérez, J. Martin-Lahoz, Frederic Sampedro, Beatriz Gómez-Ansón, Andrea Horta-Barba, Iluminada Corripio, Saul Martinez-Horta, and Anna Alonso-Solís

Subjects
Adult, Male, Disease stages, Disease, 030218 nuclear medicine & medical imaging, Cohort Studies, 03 medical and health sciences, 0302 clinical medicine, Atrophy, medicine, Humans, Radiology, Nuclear Medicine and imaging, Cognitive Dysfunction, Aged, Cerebral Cortex, Neurons, Cell Death, business.industry, Cortical degeneration, Adult Brain, Neurodegeneration, Striatal atrophy, Middle Aged, medicine.disease, Mr imaging, medicine.anatomical_structure, Diffusion Magnetic Resonance Imaging, Huntington Disease, Cerebral cortex, Disease Progression, Female, Neurology (clinical), business, Neuroscience, 030217 neurology & neurosurgery, Psychomotor Performance
Abstract

BACKGROUND AND PURPOSE: Huntington disease is a devastating genetic neurodegenerative disorder for which no effective treatment is yet available. Although progressive striatal atrophy is its pathologic hallmark, concomitant cortical deterioration is assumed to occur, but it is poorly characterized. Our objective was to study the loss of cortical integrity and its association with clinical indicators throughout the course of the disease. MATERIALS AND METHODS: Using a cohort of 39 patients with Huntington disease and 25 controls with available MR imaging (T1WI and DTI), we compared cortical atrophy and intracortical diffusivity across disease stages. Intracortical diffusivity is a DTI-derived metric that has recently been suggested to detect incipient neuronal death because water can diffuse more freely in cortical regions with reduced neural density. RESULTS: We observed progressive thinning and increasing diffusivity within the cerebral cortex of patients with Huntington disease (P < .05, corrected for multiple comparisons). Most important, in the absence of pronounced atrophy, widespread increased diffusivity was already present in individuals with premanifest Huntington disease, correlating, in turn, with clinical and disease-specific progression markers. CONCLUSIONS: Intracortical diffusivity may be more sensitive than cortical thinning for tracking early neurodegeneration in Huntington disease. Moreover, our findings provide further evidence of an early cortical compromise in Huntington disease, which contributes to our understanding of its clinical phenotype and could have important therapeutic implications.

Published
2019

8. Cerebral microbleeds and stroke risk after ischaemic stroke or transient ischaemic attack: a pooled analysis of individual patient data from cohort studies

Author

Christopher Price, P. J. A. M. Brouwers, Vincent Thijs, Sze Ho Ma, Mark Schembri, Raymond T.F. Cheung, Christopher Karayiannis, Werner H. Mess, Robert Simister, Peter Wilkinson, Jayesh Modi Medanta, Janice E. O’Connell, Karen Ma, Martin Dennis, Sean C. Murphy, John Ly, Velandai Srikanth, Hing Lung Ip, Mathew Burn, Saima Hilal, Ijaz Anwar, Richard Shek-kwan Chang, Christopher Chen, Carmen Barbato, Hatice Ozkan, Achim Gass, Louise Shaw, Hen Hallevi, Aravindakshan Manoj, Julie Staals, Frances Harrington, Henry Houlden, Hideo Hara, Kam Tat Leung, Christopher Traenka, Jeroen Hendrikse, Keon-Joo Lee, Elio Giallombardo, Ender Uysal, Edmund Ka Ming Wong, Joost Jöbsis, Gargi Banerjee, Dulka Manawadu, Rebeca Marín, John S. Thornton, Nick S. Ward, Vinodh Krishnamurthy, Thomas W. Leung, Ji Hoe Heo, Philippe Maeder, Masatoshi Koga, Michael Power, Marc Randall, Amos D. Korczyn, Narayanaswamy Venketasubramanian, Derya Selcuk Demirelli, Richard Li, Prabel Datta, Christine Guevarra, YK Wong, Ysoline Beigneux, Cisca Linn, Solveig Horstmann, Henk Verbiest, Kirsty Harkness, Eric Vicaut, John Coyle, Shoichiro Sato, Anne Marie Mendyk, Chathuri Yatawara, Alexandros A Polymeris, Lisa Hert, Joan Martí-Fàbregas, Felix Fluri, Cathy Soufan, Djamil Vahidassr, Lakshmanan Sekaran, Chu Peng Hoi, Maarten van Gemert, Andreas Charidimou, Robert Luder, Lillian Choy, Jaap van der Sande, Hannah Cohen, Jae-Sung Lim, Maam Mamun, Vincent I.H. Kwa, Kyohei Fujita, Joseph Kwan, Syuhei Ikeda, John Mitchell, Paul Berntsen, Michael J. Thrippleton, Shelagh B. Coutts, Simone Browning, Paul Guyler, Heinrich Mattle, Elles Douven, Jonathan Birns, M. Eline Kooi, Jan Stam, Hedley C. A. Emsley, David Mangion, David Calvet, Min Lou, Yannie Soo, Santiago Medrano-Martorell, Michael G. Hennerici, Chris Moran, Thomas Gattringer, Bernard Esisi, Kazuhisa Yoshifuji, Hakan Ay, Rustam Al-Shahi Salman, Joanna M. Wardlaw, Derek Hayden, Richard J. Perry, Gunaratam Gunathilagan, Hans Rolf Jäger, Frank-Erik de Leeuw, Luis Prats-Sánchez, Pankaj Sharma, Mi Hwa Yang, Marie Yvonne Douste-Blazy, Enas Lawrence, Nils Peters, Elisa Merino, KC Teo, Ethem Murat Arsava, Luc Bracoub, Dinesh Chadha, Linxin Li, Nikola Sprigg, Adrian R Parry-Jones, Pascal P. Gratz, Siu Hung Li, Stephen Makin, Arumug Nallasivam, Jane Sword, Mauro S.B. Silva, Ping Wing Ng, Layan Akijian, Krishna A Dani, Sebastian Thilemann, Marie Dominique Fratacci, Gareth Ambler, Nagaendran Kandiah, Lee-Anne Slater, Ilse Burger, Kath Pasco, Paul J. Nederkoorn, Suk Fung Tsang, Tae Jin Song, Henry Ma, Kaori Miwa, Keith W. Muir, Susana Muñoz-Maniega, Jihoon Kang, Nicolas Christ, Beom Joon Kim, Noortje A.M. Maaijwee, Kwok Kui Wong, Jon Scott, Leonidas Panos, Oi Ling Chan, Shigeru Inamura, Prasanna Aghoram, David Hargroves, Lino Ramos, Ying Zhou, Chung Yan Chan, Masayuki Shiozawa, Eleni Sakka, Michelle Davis, Matthew Smith, Leo H. Bonati, Dilek Necioglu Orken, Toshihiro Ide, Jaap Kappelle, Ale Algra, Charlotte Zerna, Laurence Legrand, Eric Jouvent, Roland Veltkamp, Simon Jung, Zeynep Tanriverdi, Shahoo Singhal, Sarah Caine, Natan M. Bornstein, Régis Bordet, Anil M. Tuladhar, Maarten Schrooten, John F. Corrigan, Alexander P. Leff, Kazunori Toyoda, Mathuri Prabhakaran, Kim Wiegertjes, Eunbin Ko, Wouter Schoonewille, Sebastian Köhler, Yvo B.W.E.M. Roos, Wing Chi Fong, Jun Tanaka, Abduelbaset Elmarim, Syed Mansoor, Peter J. Koudstaal, Kari Saastamoinen, Eric E. Smith, Paul O'Mahony, Hugues Chabriat, Duncan Wilson, Appu Suman, Dianne H.K. van Dam-Nolen, Parashkev Nachev, Ahamad Hassan, Maria del C. Valdés Hernández, Clare Shakeshaft, Stefan T. Engelter, James Okwera, Aad van der Lugt, Els De Schryver, Stef Bakker, Azlisham Mohd Nor, Yusuke Yakushiji, Robert J. van Oostenbrugge, Claire Cullen, Man Yu Tse, Sebastian Eppinger, Gregory Y.H. Lip, Kotaro Iida, Efrat Kliper, Bibek Gyanwali, Elizabeth A. Warburton, Hee-Joon Bae, Thanh G. Phan, Tarek A. Yousry, Henrik Gensicke, Christine Delmaire, Jean-Louis Mas, Jill Abrigo, Fiona Carty, Jan C. Purrucker, Masashi Nishihara, Leopold Hertzberger, Joachim Fladt, Einor Ben Assayag, Simon Leach, Winnie C.W. Chu, Edward S. Hui, Bonnie Y.K. Lam, Moon Ku Han, Francesca M Chappell, David Williams, Robin Lemmens, Philippe Lyrer, Hiroyuki Irie, Raquel Delgado-Mederos, Ronil V. Chandra, Nigel Smyth, Henry K.F. Mak, Young Dae Kim, Ryan Hoi Kit Cheung, Beatriz Gómez-Ansón, Fidel Nuñez, Anna K. Heye, Adrian Barry, Janet Putterill, Mark White, Alejandro Martínez-Domeño, Vincent Mok, Rachel Marsh, Mahmud Sajid, Timothy J. England, SL Ho, Christopher Patterson, Daniel Guisado-Alonso, Peter J. Kelly, Lawrence K.S. Wong, Anthea Parry, Enrico Flossman, Chao Xu, Marwan El-Koussy, Karim Mahawish, Sissi Ispoglou, Franz Fazekas, Toshio Imaizumi, David J. Seiffge, Wenyan Liu, Chahin Pachai, Adrian Wong, Khaled Darawil, Jeremy Molad, Sanjeevikumar Meenakishundaram, Enrico Flossmann, Harald Proschel, Caroline E. Lovelock, Christine Roffe, Kui Kai Lau, Michael McCormick, Peter M. Rothwell, Paul A. Armitage, Sarah Gunkel, Myung Suk Jang, Martin Cooper, Pol Camps-Renom, Martin M. Brown, David Cohen, David J. Werring, Koon-Ho Chan, Deborah Kelly, Neurology, ACS - Atherosclerosis & ischemic syndromes, ANS - Neurovascular Disorders, Division 2, Radiology & Nuclear Medicine, RS: Carim - B06 Imaging, Beeldvorming, MUMC+: DA BV Klinisch Fysicus (9), RS: NUTRIM - R1 - Obesity, diabetes and cardiovascular health, RS: CARIM - R3.11 - Imaging, MUMC+: MA Neurologie (3), Klinische Neurowetenschappen, RS: Carim - B05 Cerebral small vessel disease, RS: CARIM - R3.03 - Cerebral small vessel disease, and MUMC+: MA Med Staf Spec Neurologie (9)

Subjects
INTRACEREBRAL HEMORRHAGE, 030204 cardiovascular system & hematology, AMYLOID ANGIOPATHY, PREDICT, Brain Ischemia, 0302 clinical medicine, SMALL VESSEL DISEASE, Medicine, CHINESE PATIENTS, 10. No inequality, Stroke, medicine.diagnostic_test, DEMENTIA, Hazard ratio, Absolute risk reduction, Brain, Atrial fibrillation, ASSOCIATION, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], Magnetic Resonance Imaging, 3. Good health, Ischemic Attack, Transient, Cardiology, Life Sciences & Biomedicine, Intracranial Hemorrhages, medicine.drug, Cohort study, medicine.medical_specialty, RECURRENT STROKE, Clinical Neurology, 610 Medicine & health, Neuroimaging, Article, WARFARIN, 03 medical and health sciences, Internal medicine, Journal Article, Humans, Intracerebral hemorrhage, Science & Technology, business.industry, Warfarin, Magnetic resonance imaging, T2-ASTERISK-WEIGHTED MR-IMAGES, medicine.disease, ATRIAL-FIBRILLATION, Neurosciences & Neurology, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract

Contains fulltext : 208975.pdf (Publisher’s version ) (Open Access) BACKGROUND: Cerebral microbleeds are a neuroimaging biomarker of stroke risk. A crucial clinical question is whether cerebral microbleeds indicate patients with recent ischaemic stroke or transient ischaemic attack in whom the rate of future intracranial haemorrhage is likely to exceed that of recurrent ischaemic stroke when treated with antithrombotic drugs. We therefore aimed to establish whether a large burden of cerebral microbleeds or particular anatomical patterns of cerebral microbleeds can identify ischaemic stroke or transient ischaemic attack patients at higher absolute risk of intracranial haemorrhage than ischaemic stroke. METHODS: We did a pooled analysis of individual patient data from cohort studies in adults with recent ischaemic stroke or transient ischaemic attack. Cohorts were eligible for inclusion if they prospectively recruited adult participants with ischaemic stroke or transient ischaemic attack; included at least 50 participants; collected data on stroke events over at least 3 months follow-up; used an appropriate MRI sequence that is sensitive to magnetic susceptibility; and documented the number and anatomical distribution of cerebral microbleeds reliably using consensus criteria and validated scales. Our prespecified primary outcomes were a composite of any symptomatic intracranial haemorrhage or ischaemic stroke, symptomatic intracranial haemorrhage, and symptomatic ischaemic stroke. We registered this study with the PROSPERO international prospective register of systematic reviews, number CRD42016036602. FINDINGS: Between Jan 1, 1996, and Dec 1, 2018, we identified 344 studies. After exclusions for ineligibility or declined requests for inclusion, 20 322 patients from 38 cohorts (over 35 225 patient-years of follow-up; median 1.34 years [IQR 0.19-2.44]) were included in our analyses. The adjusted hazard ratio [aHR] comparing patients with cerebral microbleeds to those without was 1.35 (95% CI 1.20-1.50) for the composite outcome of intracranial haemorrhage and ischaemic stroke; 2.45 (1.82-3.29) for intracranial haemorrhage and 1.23 (1.08-1.40) for ischaemic stroke. The aHR increased with increasing cerebral microbleed burden for intracranial haemorrhage but this effect was less marked for ischaemic stroke (for five or more cerebral microbleeds, aHR 4.55 [95% CI 3.08-6.72] for intracranial haemorrhage vs 1.47 [1.19-1.80] for ischaemic stroke; for ten or more cerebral microbleeds, aHR 5.52 [3.36-9.05] vs 1.43 [1.07-1.91]; and for >/=20 cerebral microbleeds, aHR 8.61 [4.69-15.81] vs 1.86 [1.23-1.82]). However, irrespective of cerebral microbleed anatomical distribution or burden, the rate of ischaemic stroke exceeded that of intracranial haemorrhage (for ten or more cerebral microbleeds, 64 ischaemic strokes [95% CI 48-84] per 1000 patient-years vs 27 intracranial haemorrhages [17-41] per 1000 patient-years; and for >/=20 cerebral microbleeds, 73 ischaemic strokes [46-108] per 1000 patient-years vs 39 intracranial haemorrhages [21-67] per 1000 patient-years). INTERPRETATION: In patients with recent ischaemic stroke or transient ischaemic attack, cerebral microbleeds are associated with a greater relative hazard (aHR) for subsequent intracranial haemorrhage than for ischaemic stroke, but the absolute risk of ischaemic stroke is higher than that of intracranial haemorrhage, regardless of cerebral microbleed presence, antomical distribution, or burden. FUNDING: British Heart Foundation and UK Stroke Association.

Published
2019
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9. Interaction between sex and neurofilament light chain on brain structure and clinical severity in Huntington’s disease

Author

Frederic Sampedro, Saul Martinez‐Horta, Jesús Pérez‐Pérez, Rocio Perez‐Gonzalez, Andrea Horta‐Barba, Antonia Campolongo, Ignacio Aracil‐Bolaños, Beatriz Gomez‐Anson, and Jaume Kulisevsky

Subjects
Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Abstract Female Huntington’s disease (HD) patients have consistently shown a faster clinical worsening than male, but the underlying mechanisms responsible for this observation remain unknown. Here, we describe how sex modifies the impact of neurodegeneration on brain atrophy and clinical severity in HD. Cerebrospinal fluid neurofilament light chain (NfL) levels were used as a biological measure of neurodegeneration, and brain atrophy was assessed by structural magnetic resonance imaging. We found that larger NfL values in women reflect higher brain atrophy and clinical severity than in men (p

Published
2021
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10. Altered Default Network Resting State Functional Connectivity in Patients with a First Episode of Psychosis

Author

Manuel Garcia-Garcia, Enric Álvarez, F. Xavier Castellanos, Anna Alonso-Solís, Clare Kelly, Santiago Duran-Sindreu, Pilar de Castro-Manglano, Erika Proal, Fidel Núñez-Marín, Cesar Soutullo, Iluminada Corripio, and Beatriz Gómez-Ansón

Subjects
Adult, Male, medicine.medical_specialty, Psychosis, Adolescent, Rest, Statistics as Topic, Article, Functional Laterality, Young Adult, Internal medicine, Neural Pathways, medicine, Image Processing, Computer-Assisted, Humans, In patient, Biological Psychiatry, Default mode network, First episode, Psychiatric Status Rating Scales, Brain Mapping, medicine.diagnostic_test, Resting state fMRI, Functional connectivity, Brain, medicine.disease, Magnetic Resonance Imaging, Oxygen, Psychiatry and Mental health, Default network subsystem, Resting state functional connectivity, Psychotic Disorders, Schizophrenia, First episode of psychosis, Cardiology, Dorsomedial prefrontal cortex, Female, Psychology, Functional magnetic resonance imaging, Neuroscience
Abstract

Background: Default network (DN) abnormalities have been identified in patients with chronic schizophrenia using "resting state" functional magnetic resonance imaging (R-fMRI). Here, we examined the integrity of the DN in patients experiencing their first episode of psychosis (FEP) compared with sex-and age-matched healthy controls. Methods: We collected R-fMRI data from 19 FEP patients (mean age 24.9 +/- 4.8 yrs, 14 males) and 19 healthy controls (26.1 +/- 4.8 yrs, 14 males) at 3 T. Following standard preprocessing, we examined the functional connectivity (FC) of two DN subsystems and the two DN hubs (P

Published
2012

11. Deep brain stimulation of the subcallosal cingulate gyrus: Further evidence in treatment-resistant major depression

Author

Joaquim Radua, Maria Serra, Enric Álvarez, Maria J. Portella, Dolors Puigdemont, Alexandre Gironell, Rosario Pérez-Egea, Beatriz Gómez-Ansón, Víctor Pérez, Javier de Diego-Adeliño, Joan Molet, Cristian de Quintana, Rodrigo Rodríguez, and Francesc Artigas

Subjects
Adult, medicine.medical_specialty, Deep brain stimulation, Time Factors, Adolescent, medicine.medical_treatment, Deep Brain Stimulation, Gyrus Cinguli, law.invention, Depressive Disorder, Treatment-Resistant, Young Adult, Randomized controlled trial, law, Hamd, medicine, Humans, Pharmacology (medical), Psychiatry, Depression (differential diagnoses), Aged, Pharmacology, Psychiatric Status Rating Scales, Depressive Disorder, Major, Remission Induction, Hamilton Rating Scale for Depression, subgenual cingulate gyrus, Middle Aged, medicine.disease, Psychiatry and Mental health, Treatment Outcome, Anesthesia, treatment-resistant depression, Clinical Global Impression, Major depressive disorder, Psychology, Treatment-resistant depression
Abstract

Deep brain stimulation (DBS) is currently tested as an experimental therapy for patients with treatment-resistant depression (TRD). Here we report on the short-and long-term (1 yr) clinical outcomes and tolerance of DBS in eight TRD patients. Electrodes were implanted bilaterally in the subgenual cingulate gyrus (SCG; Broadman areas 24-25), and stimulated at 135 Hz (90-μs pulsewidth). Voltage and active electrode contacts were adjusted to maximize short-term responses. Clinical assessments included the 17-item Hamilton Depression Rating Scale (HAMD17; primary measure), the Montgomery-Ãsberg Depression Rating Scale (MADRS) and the Clinical Global Impression (CGI) Scale. In the first week after surgery, response and remission (HAMD ≤7) rates were, respectively 87.5% and 50%. These early responses were followed by an overall worsening, with a response and remission rates of 37.5% (3/8) at 1 month. From then onwards, patients showed a progressive improvement, with response and remission rates of 87.5% and 37.5%, respectively, at 6 months. The corresponding figures at 1 yr were 62.5% and 50%, respectively. Clinical effects were seen in all HAMD subscales without a significant incidence of side-effects. Surgical procedure and post-operative period were well-tolerated for all patients. This is the second independent study on the use of DBS of the SCG to treat chronic depression resistant to current therapeutic strategies. DBS fully remitted 50% of the patients at 1 yr, supporting its validity as a new therapeutic strategy for TRD. © 2011 CINP., This study is funded by the Fondo de Investigación Sanitaria (FIS: PI 06/0662, PS 09/00580), Instituto Carlos III, and by the Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM) intramural funding (P91G), the “VI Plan Nacional I+D+I 2008-2011”, and the “Iniciativa Ingenio 2010, programa CONSOLIDER, acción CIBER”. Support from grant SAF2007-62378 is also acknowledged. Dr. Portella is funded by the Spanish Ministry of Science and Innovation and the Instituto de Investigación Carlos III through a “Miguel Servet” research contract, co-financed by the European Regional Development Fund (ERDF) (2007-2013).

Published
2012

12. Structural brain correlates of dementia in Huntington’s disease

Author

Saul Martinez-Horta, Frederic Sampedro, Andrea Horta-Barba, Jesús Perez-Perez, Javier Pagonabarraga, Beatriz Gomez-Anson, and Jaime Kulisevsky

Subjects
Huntington’s disease, Dementia, Neuropsychology, Mild cognitive impairment, Movement disorders, Computer applications to medicine. Medical informatics, R858-859.7, Neurology. Diseases of the nervous system, RC346-429
Abstract

Background: Huntington’s disease (HD) is a fatal genetic neurodegenerative disorder with no effective treatment currently available. Progressive basal ganglia and whole-brain atrophy and concurrent cognitive deterioration are prototypical aspects of HD. However, the specific patterns of brain atrophy underlying cognitive impairment of different severity in HD are poorly understood. The aim of this study was to investigate the specific structural brain correlates of major cognitive deficits in HD and to explore its association with neuropsychological indicators. Participants: Thirty-five symptomatic early-to-mild HD patients and 15 healthy controls (HC) with available T1-MRI imaging were included in this study. Methods: In this cross-sectional study, HD patients were classified as patients with (HD-Dem) and without (HD-ND) major cognitive impairment in the range of dementia. This classification was based on previously validated PD-CRS cutoff scores for HD. Differences in brain atrophy across groups were studied by means of grey-matter volume voxel-based morphometry (GMV-VBM) and cortical thickness (Cth). Voxelwise and vertexwise general linear models were used to assess the group comparisons, controlling for the effects of age, sex, education, CAG repeat length and severity of motor symptoms. Clusters surviving p

Published
2020
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