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Lorca-Puls DL, Gajardo-Vidal A, Mandelli ML, Illán-Gala I, Ezzes Z, Wauters LD, Battistella G, Bogley R, Ratnasiri B, Licata AE, Battista P, García AM, Tee BL, Lukic S, Boxer AL, Rosen HJ, Seeley WW, Grinberg LT, Spina S, Miller BL, Miller ZA, Henry ML, Dronkers NF, Gorno-Tempini ML. Neural basis of speech and grammar symptoms in non-fluent variant primary progressive aphasia spectrum. Brain 2024; 147:607-626. [PMID: 37769652 PMCID: PMC10834255 DOI: 10.1093/brain/awad327] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 07/28/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
The non-fluent/agrammatic variant of primary progressive aphasia (nfvPPA) is a neurodegenerative syndrome primarily defined by the presence of apraxia of speech (AoS) and/or expressive agrammatism. In addition, many patients exhibit dysarthria and/or receptive agrammatism. This leads to substantial phenotypic variation within the speech-language domain across individuals and time, in terms of both the specific combination of symptoms as well as their severity. How to resolve such phenotypic heterogeneity in nfvPPA is a matter of debate. 'Splitting' views propose separate clinical entities: 'primary progressive apraxia of speech' when AoS occurs in the absence of expressive agrammatism, 'progressive agrammatic aphasia' (PAA) in the opposite case, and 'AOS + PAA' when mixed motor speech and language symptoms are clearly present. While therapeutic interventions typically vary depending on the predominant symptom (e.g. AoS versus expressive agrammatism), the existence of behavioural, anatomical and pathological overlap across these phenotypes argues against drawing such clear-cut boundaries. In the current study, we contribute to this debate by mapping behaviour to brain in a large, prospective cohort of well characterized patients with nfvPPA (n = 104). We sought to advance scientific understanding of nfvPPA and the neural basis of speech-language by uncovering where in the brain the degree of MRI-based atrophy is associated with inter-patient variability in the presence and severity of AoS, dysarthria, expressive agrammatism or receptive agrammatism. Our cross-sectional examination of brain-behaviour relationships revealed three main observations. First, we found that the neural correlates of AoS and expressive agrammatism in nfvPPA lie side by side in the left posterior inferior frontal lobe, explaining their behavioural dissociation/association in previous reports. Second, we identified a 'left-right' and 'ventral-dorsal' neuroanatomical distinction between AoS versus dysarthria, highlighting (i) that dysarthria, but not AoS, is significantly influenced by tissue loss in right-hemisphere motor-speech regions; and (ii) that, within the left hemisphere, dysarthria and AoS map onto dorsally versus ventrally located motor-speech regions, respectively. Third, we confirmed that, within the large-scale grammar network, left frontal tissue loss is preferentially involved in expressive agrammatism and left temporal tissue loss in receptive agrammatism. Our findings thus contribute to define the function and location of the epicentres within the large-scale neural networks vulnerable to neurodegenerative changes in nfvPPA. We propose that nfvPPA be redefined as an umbrella term subsuming a spectrum of speech and/or language phenotypes that are closely linked by the underlying neuroanatomy and neuropathology.
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Affiliation(s)
- Diego L Lorca-Puls
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Sección de Neurología, Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Concepción, 4070105, Chile
| | - Andrea Gajardo-Vidal
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, 7590943, Chile
- Dirección de Investigación y Doctorados, Vicerrectoría de Investigación y Doctorados, Universidad del Desarrollo, Concepción, 4070001, Chile
| | - Maria Luisa Mandelli
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Ignacio Illán-Gala
- Sant Pau Memory Unit, Department of Neurology, Biomedical Research Institute Sant Pau, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, 08025, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, 28029, Spain
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
| | - Zoe Ezzes
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Lisa D Wauters
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Department of Speech, Language and Hearing Sciences, University of Texas, Austin, TX 78712-0114, USA
| | - Giovanni Battistella
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Department of Otolaryngology, Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, MA 02114, USA
| | - Rian Bogley
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Buddhika Ratnasiri
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Abigail E Licata
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Petronilla Battista
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
- Laboratory of Neuropsychology, Istituti Clinici Scientifici Maugeri IRCCS, Bari, 70124, Italy
| | - Adolfo M García
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
- Centro de Neurociencias Cognitivas, Universidad de San Andrés, Buenos Aires, B1644BID, Argentina
- Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, 9160000, Chile
| | - Boon Lead Tee
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
| | - Sladjana Lukic
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Department of Communication Sciences and Disorders, Ruth S. Ammon College of Education and Health Sciences, Adelphi University, Garden City, NY 11530-0701, USA
| | - Adam L Boxer
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Howard J Rosen
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - William W Seeley
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Lea T Grinberg
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
- Department of Pathology, University of California San Francisco, San Francisco, CA 94143, USA
| | - Salvatore Spina
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Bruce L Miller
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
- Global Brain Health Institute, University of California, San Francisco, CA 94143, USA
| | - Zachary A Miller
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
| | - Maya L Henry
- Department of Speech, Language and Hearing Sciences, University of Texas, Austin, TX 78712-0114, USA
- Department of Neurology, Dell Medical School, University of Texas, Austin, TX 78712, USA
| | - Nina F Dronkers
- Department of Psychology, University of California, Berkeley, CA 94720, USA
- Department of Neurology, University of California, Davis, CA 95817, USA
| | - Maria Luisa Gorno-Tempini
- Memory and Aging Center, Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, SanFrancisco, CA 94158, USA
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Gajardo-Vidal A, Montembeault M, Lorca-Puls DL, Licata AE, Bogley R, Erlhoff S, Ratnasiri B, Ezzes Z, Battistella G, Tsoy E, Pereira CW, DeLeon J, Tee BL, Henry ML, Miller ZA, Rankin KP, Mandelli ML, Possin KL, Gorno-Tempini ML. Assessing processing speed and its neural correlates in the three variants of primary progressive aphasia with a non-verbal tablet-based task. Cortex 2024; 171:165-177. [PMID: 38000139 PMCID: PMC10922977 DOI: 10.1016/j.cortex.2023.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/29/2023] [Accepted: 10/18/2023] [Indexed: 11/26/2023]
Abstract
Prior research has revealed distinctive patterns of impaired language abilities across the three variants of Primary Progressive Aphasia (PPA): nonfluent/agrammatic (nfvPPA), logopenic (lvPPA) and semantic (svPPA). However, little is known about whether, and to what extent, non-verbal cognitive abilities, such as processing speed, are impacted in PPA patients. This is because neuropsychological tests typically contain linguistic stimuli and require spoken output, being therefore sensitive to verbal deficits in aphasic patients. The aim of this study is to investigate potential differences in processing speed between PPA patients and healthy controls, and among the three PPA variants, using a brief non-verbal tablet-based task (Match) modeled after the WAIS-III digit symbol coding test, and to determine its neural correlates. Here, we compared performance on the Match task between PPA patients (n = 61) and healthy controls (n = 59) and across the three PPA variants. We correlated performance on Match with voxelwise gray and white matter volumes. We found that lvPPA and nfvPPA patients performed significantly worse on Match than healthy controls and svPPA patients. Worse performance on Match across PPA patients was associated with reduced gray matter volume in specific parts of the left middle frontal gyrus, superior parietal lobule, and precuneus, and reduced white matter volume in the left parietal lobe. To conclude, our behavioral findings reveal that processing speed is differentially impacted across the three PPA variants and provide support for the potential clinical utility of a tabled-based task (Match) to assess non-verbal cognition. In addition, our neuroimaging findings confirm the importance of a set of fronto-parietal regions that previous research has associated with processing speed and executive control. Finally, our behavioral and neuroimaging findings combined indicate that differences in processing speed are largely explained by the unequal distribution of atrophy in these fronto-parietal regions across the three PPA variants.
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Affiliation(s)
- Andrea Gajardo-Vidal
- Centro de Investigación en Complejidad Social (CICS), Facultad de Gobierno, Universidad del Desarrollo, Santiago, Chile.
| | - Maxime Montembeault
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA; Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada; Department of Psychiatry, McGill University, Montréal, QC H3A 1A1, Canada
| | - Diego L Lorca-Puls
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA; Sección de Neurología, Departamento de Especialidades, Facultad de Medicina, Universidad de Concepción, Concepción, Chile
| | - Abigail E Licata
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Rian Bogley
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Sabrina Erlhoff
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Buddhika Ratnasiri
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Zoe Ezzes
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Giovanni Battistella
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Elena Tsoy
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Christa Watson Pereira
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Jessica DeLeon
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Boon Lead Tee
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Maya L Henry
- Department of Speech, Language, and Hearing Sciences, University of Texas, Austin, TX, USA
| | - Zachary A Miller
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Katherine P Rankin
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Maria Luisa Mandelli
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
| | - Katherine L Possin
- Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA
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Taylor JC, Heuer HW, Clark AL, Wise AB, Manoochehri M, Forsberg L, Mester C, Rao M, Brushaber D, Kramer J, Welch AE, Kornak J, Kremers W, Appleby B, Dickerson BC, Domoto‐Reilly K, Fields JA, Ghoshal N, Graff‐Radford N, Grossman M, Hall MGH, Huey ED, Irwin D, Lapid MI, Litvan I, Mackenzie IR, Masdeu JC, Mendez MF, Nevler N, Onyike CU, Pascual B, Pressman P, Rankin KP, Ratnasiri B, Rojas JC, Tartaglia MC, Wong B, Gorno‐Tempini ML, Boeve BF, Rosen HJ, Boxer AL, Staffaroni AM. Feasibility and acceptability of remote smartphone cognitive testing in frontotemporal dementia research. Alzheimers Dement (Amst) 2023; 15:e12423. [PMID: 37180971 PMCID: PMC10170087 DOI: 10.1002/dad2.12423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/27/2022] [Accepted: 03/01/2023] [Indexed: 05/16/2023]
Abstract
Introduction Remote smartphone assessments of cognition, speech/language, and motor functioning in frontotemporal dementia (FTD) could enable decentralized clinical trials and improve access to research. We studied the feasibility and acceptability of remote smartphone data collection in FTD research using the ALLFTD Mobile App (ALLFTD-mApp). Methods A diagnostically mixed sample of 214 participants with FTD or from familial FTD kindreds (asymptomatic: CDR®+NACC-FTLD = 0 [N = 101]; prodromal: 0.5 [N = 49]; symptomatic ≥1 [N = 51]; not measured [N = 13]) were asked to complete ALLFTD-mApp tests on their smartphone three times within 12 days. They completed smartphone familiarity and participation experience surveys. Results It was feasible for participants to complete the ALLFTD-mApp on their own smartphones. Participants reported high smartphone familiarity, completed ∼ 70% of tasks, and considered the time commitment acceptable (98% of respondents). Greater disease severity was associated with poorer performance across several tests. Discussion These findings suggest that the ALLFTD-mApp study protocol is feasible and acceptable for remote FTD research. HIGHLIGHTS The ALLFTD Mobile App is a smartphone-based platform for remote, self-administered data collection.The ALLFTD Mobile App consists of a comprehensive battery of surveys and tests of executive functioning, memory, speech and language, and motor abilities.Remote digital data collection using the ALLFTD Mobile App was feasible in a multicenter research consortium that studies FTD. Data was collected in healthy controls and participants with a range of diagnoses, particularly FTD spectrum disorders.Remote digital data collection was well accepted by participants with a variety of diagnoses.
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Affiliation(s)
- Jack Carson Taylor
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Hilary W. Heuer
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Annie L. Clark
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Amy B. Wise
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | | | - Leah Forsberg
- Department of NeurologyMayo ClinicRochesterMinnesotaUSA
| | - Carly Mester
- Department of Quantitative Health SciencesDivision of Biomedical Statistics and InformaticsMayo ClinicRochesterMinnesotaUSA
| | - Meghana Rao
- Department of NeurologyMayo ClinicRochesterMinnesotaUSA
| | - Daniell Brushaber
- Department of Quantitative Health SciencesDivision of Biomedical Statistics and InformaticsMayo ClinicRochesterMinnesotaUSA
| | - Joel Kramer
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Ariane E. Welch
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - John Kornak
- Department of Epidemiology and BiostatisticsUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Walter Kremers
- Department of Quantitative Health SciencesDivision of Biomedical Statistics and InformaticsMayo ClinicRochesterMinnesotaUSA
| | - Brian Appleby
- Department of NeurologyCase Western Reserve UniversityClevelandOhioUSA
| | - Bradford C. Dickerson
- Department of NeurologyMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | | | - Julie A. Fields
- Department of Psychiatry and PsychologyMayo ClinicRochesterMinnesotaUSA
| | - Nupur Ghoshal
- Center for Advanced Medicine Memory Diagnostic CenterWashington UniversitySaint LouisMissouriUSA
| | | | - Murray Grossman
- Department of NeurologyUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Matthew GH Hall
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Edward D. Huey
- Department of NeurologyColumbia UniversityNew YorkNew YorkUSA
| | - David Irwin
- Department of NeurologyUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Maria I. Lapid
- Department of Psychiatry and PsychologyMayo ClinicRochesterMinnesotaUSA
| | - Irene Litvan
- Department of NeurosciencesUniversity of CaliforniaSan DiegoCaliforniaUSA
| | - Ian R. Mackenzie
- Department of PathologyUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | | | - Mario F. Mendez
- Department of NeurologyUniversity of CaliforniaLos AngelesCaliforniaUSA
| | - Naomi Nevler
- Department of NeurologyUniversity of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Chiadi U. Onyike
- Department of Psychiatry and Behavioral SciencesJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Belen Pascual
- Department of NeurologyHouston MethodistHoustonTexasUSA
| | - Peter Pressman
- Department of NeurologyUniversity of ColoradoAuroraColoradoUSA
| | - Katherine P. Rankin
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Buddhika Ratnasiri
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Julio C. Rojas
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Maria Carmela Tartaglia
- Tanz Centre for Research in Neurodegenerative Diseases, Division of NeurologyUniversity of TorontoTorontoOntarioCanada
| | - Bonnie Wong
- Department of NeurologyMassachusetts General Hospital and Harvard Medical SchoolBostonMassachusettsUSA
| | - Maria Luisa Gorno‐Tempini
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | | | - Howard J. Rosen
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Adam L. Boxer
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
| | - Adam M. Staffaroni
- Department of Neurology, Memory and Aging Center, University of California, San FranciscoWeill Institute for NeurosciencesSan FranciscoCaliforniaUSA
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Montembeault M, Miller ZA, Geraudie A, Pressman P, Slegers A, Millanski C, Licata A, Ratnasiri B, Mandelli ML, Henry M, Cobigo Y, Rosen HJ, Miller BL, Brambati SM, Gorno-Tempini ML, Battistella G. Spared speech fluency is associated with increased functional connectivity in the speech production network in semantic variant primary progressive aphasia. Brain Commun 2023; 5:fcad077. [PMID: 37038501 PMCID: PMC10082556 DOI: 10.1093/braincomms/fcad077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 01/10/2023] [Accepted: 03/15/2023] [Indexed: 03/18/2023] Open
Abstract
Semantic variant primary progressive aphasia is a clinical syndrome characterized by marked semantic deficits, anterior temporal lobe atrophy and reduced connectivity within a distributed set of regions belonging to the functional network associated with semantic processing. However, to fully depict the clinical signature of semantic variant primary progressive aphasia, it is necessary to also characterize preserved neural networks and linguistic abilities, such as those subserving speech production. In this case-control observational study, we employed whole-brain seed-based connectivity on task-free MRI data of 32 semantic variant primary progressive aphasia patients and 46 healthy controls to investigate the functional connectivity of the speech production network and its relationship with the underlying grey matter. We investigated brain-behaviour correlations with speech fluency measures collected through clinical tests (verbal agility) and connected speech (speech rate and articulation rate). As a control network, we also investigated functional connectivity within the affected semantic network. Patients presented with increased connectivity in the speech production network between left inferior frontal and supramarginal regions, independent of underlying grey matter volume. In semantic variant primary progressive aphasia patients, preserved (verbal agility) and increased (articulation rate) speech fluency measures correlated with increased connectivity between inferior frontal and supramarginal regions. As expected, patients demonstrated decreased functional connectivity in the semantic network (dependent on the underlying grey matter atrophy) associated with average nouns' age of acquisition during connected speech. Collectively, these results provide a compelling model for studying compensation mechanisms in response to disease that might inform the design of future rehabilitation strategies in semantic variant primary progressive aphasia.
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Affiliation(s)
- Maxime Montembeault
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
- Douglas Mental Health University Institute, Montréal, QC H4H 1R3, Canada
- Department of Psychiatry, McGill University, Montréal, QC H3A 1A1, Canada
| | - Zachary A Miller
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Amandine Geraudie
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
- Department of Neurology, Toulouse University Hospital, Toulouse 31400, France
| | - Peter Pressman
- Department of Neurology, Behavioral Neurology Section, University of Colorado Anschutz Medical Campus, Aurora, CO 80238, USA
| | - Antoine Slegers
- Département de Psychologie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Centre de recherche de l’Institut Universitaire de Gériatrie de Montréal, Montréal, QC H3W 1W5, Canada
| | - Carly Millanski
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
- Department of Speech, Language, and Hearing Sciences, The University of Texas at Austin, Austin, TX 78712-0114, USA
| | - Abigail Licata
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Buddhika Ratnasiri
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Maria Luisa Mandelli
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Maya Henry
- Department of Speech, Language, and Hearing Sciences, The University of Texas at Austin, Austin, TX 78712-0114, USA
| | - Yann Cobigo
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Howard J Rosen
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Bruce L Miller
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Simona M Brambati
- Département de Psychologie, Université de Montréal, Montréal, QC H3C 3J7, Canada
- Centre de recherche de l’Institut Universitaire de Gériatrie de Montréal, Montréal, QC H3W 1W5, Canada
| | - Maria Luisa Gorno-Tempini
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
| | - Giovanni Battistella
- Memory and Aging Center, Department of Neurology, University of California in San Francisco, San Francisco, CA 94158, USA
- Department of Otolaryngology—Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, MA 02114, USA
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5
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Lukic S, Licata AE, Weis E, Bogley R, Ratnasiri B, Welch AE, Hinkley LBN, Miller Z, Garcia AM, Houde JF, Nagarajan SS, Gorno-Tempini ML, Borghesani V. Auditory Verb Generation Performance Patterns Dissociate Variants of Primary Progressive Aphasia. Front Psychol 2022; 13:887591. [PMID: 35814055 PMCID: PMC9267767 DOI: 10.3389/fpsyg.2022.887591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Primary progressive aphasia (PPA) is a clinical syndrome in which patients progressively lose speech and language abilities. Three variants are recognized: logopenic (lvPPA), associated with phonology and/or short-term verbal memory deficits accompanied by left temporo-parietal atrophy; semantic (svPPA), associated with semantic deficits and anterior temporal lobe (ATL) atrophy; non-fluent (nfvPPA) associated with grammar and/or speech-motor deficits and inferior frontal gyrus (IFG) atrophy. Here, we set out to investigate whether the three variants of PPA can be dissociated based on error patterns in a single language task. We recruited 21 lvPPA, 28 svPPA, and 24 nfvPPA patients, together with 31 healthy controls, and analyzed their performance on an auditory noun-to-verb generation task, which requires auditory analysis of the input, access to and selection of relevant lexical and semantic knowledge, as well as preparation and execution of speech. Task accuracy differed across the three variants and controls, with lvPPA and nfvPPA having the lowest and highest accuracy, respectively. Critically, machine learning analysis of the different error types yielded above-chance classification of patients into their corresponding group. An analysis of the error types revealed clear variant-specific effects: lvPPA patients produced the highest percentage of "not-a-verb" responses and the highest number of semantically related nouns (production of baseball instead of throw to noun ball); in contrast, svPPA patients produced the highest percentage of "unrelated verb" responses and the highest number of light verbs (production of take instead of throw to noun ball). Taken together, our findings indicate that error patterns in an auditory verb generation task are associated with the breakdown of different neurocognitive mechanisms across PPA variants. Specifically, they corroborate the link between temporo-parietal regions with lexical processing, as well as ATL with semantic processes. These findings illustrate how the analysis of pattern of responses can help PPA phenotyping and heighten diagnostic sensitivity, while providing insights on the neural correlates of different components of language.
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Affiliation(s)
- Sladjana Lukic
- Department of Communication Sciences and Disorders, Ruth S. Ammon College of Education and Health Sciences, Adelphi University, Garden City, NY, United States
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
| | - Abigail E. Licata
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
- Department of Neurology, Dyslexia Center, University of California, San Francisco, San Francisco, CA, United States
| | - Elizabeth Weis
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
| | - Rian Bogley
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
- Department of Neurology, Dyslexia Center, University of California, San Francisco, San Francisco, CA, United States
| | - Buddhika Ratnasiri
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
| | - Ariane E. Welch
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
| | - Leighton B. N. Hinkley
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States
| | - Z. Miller
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
- Department of Neurology, Dyslexia Center, University of California, San Francisco, San Francisco, CA, United States
| | - Adolfo M. Garcia
- Cognitive Neuroscience Center, Universidad de San Andrés, Buenos Aires, Argentina
- Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, United States
- National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - John F. Houde
- Department of Otolaryngology – Head and Neck Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Srikantan S. Nagarajan
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States
| | - Maria Luisa Gorno-Tempini
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA, United States
- Department of Neurology, Dyslexia Center, University of California, San Francisco, San Francisco, CA, United States
| | - Valentina Borghesani
- Department of Psychology, Université de Montréal, Montréal, QC, Canada
- Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada
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Andrejko K, Ratnasiri B, Lewnard JA. Association of pneumococcal serotype with susceptibility to antimicrobial drugs: a systematic review and meta-analysis. Clin Infect Dis 2021; 75:131-140. [PMID: 34599811 DOI: 10.1093/cid/ciab852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Pneumococcal serotypes differ in antimicrobial susceptibility. However, patterns and causes of this variation are not comprehensively understood. METHODS We undertook a systematic review of epidemiologic studies of pneumococci isolated from carriage or invasive disease among children globally from 2000-2019. We evaluated associations of each serotype with nonsusceptibility to penicillin, macrolides, and trimethoprim/sulfamethoxazole. We evaluated differences in the prevalence of nonsusceptibility to major antibiotic classes across serotypes using random effects meta-regression models, and assessed changes in prevalence of nonsusceptibility after implementation of pneumococcal conjugate vaccines (PCVs). We also evaluated associations between biological characteristics of serotypes and their likelihood of nonsusceptibility to each drug. RESULTS We included data from 129 studies representing 32,187 isolates across 52 countries. Within serotypes, the proportion of nonsusceptible isolates varied geographically and over time, in settings using and those not using PCVs. Factors predicting enhanced fitness of serotypes in colonization as well as enhanced pathogenicity were each associated with higher likelihood of nonsusceptibility to penicillin, macrolides, and trimethoprim/sulfamethoxazole. Increases in prevalence of nonsusceptibility following PCV implementation were evident among non-PCV serotypes including 6A, 6C, 15A, 15B/C, 19A, and 35B; however, this pattern was not universally evident among non-PCV serotypes. Post-vaccination increases in nonsusceptibility for serotypes 6A and 19A were attenuated in settings that implemented PCV13. CONCLUSIONS In pneumococci, nonsusceptibility to penicillin, macrolides, and trimethoprim/sulfamethoxazole is associated with more frequent opportunities for antibiotic exposure during both prolonged carriage episodes and when serotypes cause disease. These findings suggest multiple pathways leading to resistance selection in pneumococci.
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Affiliation(s)
- Kristin Andrejko
- Division of Epidemiology, School of Public Health, University of California, Berkeley, Berkeley, California, United States
| | - Buddhika Ratnasiri
- College of Letters & Science, University of California, Berkeley, Berkeley, California, United States
| | - Joseph A Lewnard
- Division of Epidemiology, School of Public Health, University of California, Berkeley, Berkeley, California, United States.,Division of Infectious Diseases & Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, California, United States.,Center for Computational Biology, College of Engineering, University of California, Berkeley, Berkeley, California, United States
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Andrejko K, Ratnasiri B, Hausdorff WP, Laxminarayan R, Lewnard JA. Antimicrobial resistance in paediatric Streptococcus pneumoniae isolates amid global implementation of pneumococcal conjugate vaccines: a systematic review and meta-regression analysis. Lancet Microbe 2021; 2:e450-e460. [PMID: 34485957 PMCID: PMC8410609 DOI: 10.1016/s2666-5247(21)00064-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Pneumococcal diseases are a leading cause of morbidity and mortality among children globally, and the burden of these diseases might be worsened by antimicrobial resistance. To understand the effect of pneumococcal conjugate vaccine (PCV) deployment on antimicrobial resistance in pneumococci, we assessed the susceptibility of paediatric pneumococcal isolates to various antimicrobial drugs before and after PCV implementation. METHODS We did a systematic review of studies reporting antimicrobial susceptibility profiles of paediatric pneumococcal isolates between 2000 and 2020 using PubMed and the Antimicrobial Testing Leadership and Surveillance database (ATLAS; Pfizer). Population-based studies of invasive pneumococcal disease or nasopharyngeal colonisation were eligible for inclusion. As primary outcome measures, we extracted the proportions of isolates that were non-susceptible or resistant to penicillin, macrolides, sulfamethoxazole-trimethoprim, third-generation cephalosporins, and tetracycline from each study. Where available, we also extracted data on pneumococcal serotypes. We estimated changes in the proportion of isolates with reduced susceptibility or resistance to each antibiotic class using random-effects meta-regression models, adjusting for study-level and region-level heterogeneity, as well as secular trends, invasive or colonising isolate source, and countries' per-capita gross domestic product. FINDINGS From 4910 studies screened for inclusion, we extracted data from 559 studies on 312 783 paediatric isolates. Susceptibility of isolates varied substantially across regions both before and after implementation of any PCV product. On average across all regions, we estimated significant absolute reductions in the proportions of pneumococci showing non-susceptibility to penicillin (11·5%, 95% CI 8·6-14·4), sulfamethoxazole-trimethoprim (9·7%, 4·3-15·2), and third-generation cephalosporins (7·5%, 3·1-11·9), over the 10 years after implementation of any PCV product, and absolute reductions in the proportions of pneumococci resistant to penicillin (7·3%, 5·3-9·4), sulfamethoxazole-trimethoprim (16·0%, 11·0-21·2), third-generation cephalosporins (4·5%, 0·3-8·7), macrolides (3·6%, 0·7-6·6) and tetracycline (2·0%, 0·3-3·7). We did not find evidence of changes in the proportion of isolates non-susceptible to macrolides or tetracycline after PCV implementation. Observed changes in penicillin non-susceptibility were driven, in part, by replacement of vaccine-targeted serotypes with non-vaccine serotypes that were less likely to be non-susceptible. INTERPRETATION Implementation of PCVs has reduced the proportion of circulating pneumococci resistant to first-line antibiotic treatments for pneumonia. This effect merits consideration in assessments of vaccine impact and investments in coverage improvements. FUNDING Bill & Melinda Gates Foundation.
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Affiliation(s)
- Kristin Andrejko
- Division of Epidemiology, School of Public Health, University of California, Berkeley, CA, USA
| | - Buddhika Ratnasiri
- College of Letters and Science, University of California, Berkeley, CA, USA
| | - William P Hausdorff
- PATH, Washington, DC, USA
- Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Ramanan Laxminarayan
- Center for Disease Dynamics, Economics and Policy, New Delhi, India
- High Meadows Environmental Institute, Princeton University, Princeton, NJ, USA
| | - Joseph A Lewnard
- Division of Epidemiology, School of Public Health, University of California, Berkeley, CA, USA
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, CA, USA
- Center for Computational Biology, College of Engineering, University of California, Berkeley, CA, USA
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Visudhiphan P, Khantanaphar S, Bunyaratvej S, Ratnasiri B. Juvenile lipidosis (juvenile amaurotic idiocy). Report of two cases: clinical and electronmicroscopic study. J Med Assoc Thai 1974; 57:93-9. [PMID: 4813709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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