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Article ; Online: Right uncinate fasciculus supports socioemotional sensitivity in health and neurodegenerative disease.

Toller, Gianina / Mandelli, Maria Luisa / Cobigo, Yann / Rosen, Howard J / Kramer, Joel H / Miller, Bruce L / Gorno-Tempini, Maria Luisa / Rankin, Katherine P

NeuroImage. Clinical

2022 Volume 34, Page(s) 102994

Abstract: The uncinate fasciculus (UF) connects fronto-insular and temporal gray matter regions involved in visceral emotional reactivity and semantic appraisal, but the precise role of this tract in socioemotional functioning is not well-understood. Using the ... ...

Abstract	The uncinate fasciculus (UF) connects fronto-insular and temporal gray matter regions involved in visceral emotional reactivity and semantic appraisal, but the precise role of this tract in socioemotional functioning is not well-understood. Using the Revised-Self Monitoring (RSMS) informant questionnaire, we examined whether fractional anisotropy (FA) in the right UF corresponded to socioemotional sensitivity during face-to-face interactions in 145 individuals (40 healthy older adults [NC], and 105 patients with frontotemporal lobar degeneration [FTLD] syndromes in whom this tract is selectively vulnerable, including 31 behavioral variant frontotemporal dementia [bvFTD], 39 semantic variant primary progressive aphasia [svPPA], and 35 nonfluent variant primary progressive aphasia [nfvPPA]). Voxelwise and region-of-interest-based DWI analyses revealed that FA in the right but not left UF significantly predicted RSMS score in the full sample, and in NC and svPPA subgroups alone. Right UF integrity did not predict RSMS score in the bvFTD group, but gray matter volume in the right orbitofrontal cortex adjacent to the UF was a significant predictor. Our results suggest that better socioemotional sensitivity is specifically supported by right UF white matter, highlighting a key neuro-affective relationship found in both healthy aging and neurologically affected individuals. The finding that poorer socioemotional sensitivity corresponded to right UF damage in svPPA but was more robustly influenced by gray matter atrophy adjacent to the UF in bvFTD may have important implications for endpoint selection in clinical trial design for patients with FTLD.
MeSH term(s)	Aged ; Frontotemporal Dementia/diagnostic imaging ; Frontotemporal Dementia/psychology ; Frontotemporal Lobar Degeneration ; Humans ; Neurodegenerative Diseases ; Primary Progressive Nonfluent Aphasia ; Uncinate Fasciculus ; White Matter/diagnostic imaging
Language	English
Publishing date	2022-03-25
Publishing country	Netherlands
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	2701571-3
ISSN	2213-1582 ; 2213-1582
ISSN (online)	2213-1582
ISSN	2213-1582
DOI	10.1016/j.nicl.2022.102994
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Article ; Online: Enlarged perivascular spaces are associated with white matter injury, cognition and inflammation in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy.

Karvelas, Nikolaos / Oh, Bradley / Wang, Earnest / Cobigo, Yann / Tsuei, Torie / Fitzsimons, Stephen / Younes, Kyan / Ehrenberg, Alexander / Geschwind, Michael D / Schwartz, Daniel / Kramer, Joel H / Ferguson, Adam R / Miller, Bruce L / Silbert, Lisa C / Rosen, Howard J / Elahi, Fanny M

Brain communications

2024 Volume 6, Issue 2, Page(s) fcae071

Abstract: Enlarged perivascular spaces have been previously reported in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, but their significance and pathophysiology remains unclear. We investigated associations of white ... ...

Abstract	Enlarged perivascular spaces have been previously reported in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, but their significance and pathophysiology remains unclear. We investigated associations of white matter enlarged perivascular spaces with classical imaging measures, cognitive measures and plasma proteins to better understand what enlarged perivascular spaces represent in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy and whether radiographic measures of enlarged perivascular spaces would be of value in future therapeutic discovery studies for cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy. Twenty-four individuals with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy and 24 age- and sex-matched controls were included. Disease status was determined based on the presence of
Language	English
Publishing date	2024-03-08
Publishing country	England
Document type	Journal Article
ISSN	2632-1297
ISSN (online)	2632-1297
DOI	10.1093/braincomms/fcae071
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Article ; Online: Moderating role of physical activity on hippocampal iron deposition and memory outcomes in typically aging older adults.

Lee, Shannon Y / Paolillo, Emily W / Saloner, Rowan / Cobigo, Yann / Diaz, Valentina E / Gontrum, Eva Q / VandeBunte, Anna / Chatterjee, Ankita / Tucker, Miwa / Kramer, Joel H / Casaletto, Kaitlin B

Neurobiology of aging

2023 Volume 131, Page(s) 124–131

Abstract: Physical activity (PA) is linked to better cognitive and brain health, though its mechanisms are unknown. While brain iron is essential for normal function, levels increase with age and, when excessive, can cause detrimental neural effects. We examined ... ...

Abstract	Physical activity (PA) is linked to better cognitive and brain health, though its mechanisms are unknown. While brain iron is essential for normal function, levels increase with age and, when excessive, can cause detrimental neural effects. We examined how objectively measured PA relates to cerebral iron deposition and memory functioning in normal older adults. Sixty-eight cognitively unimpaired older adults from the UCSF Memory and Aging Center completed neuropsychological testing and brain magnetic resonance imaging, followed by 30-day Fitbit monitoring. Magnetic resonance imaging quantitative susceptibility mapping (QSM) quantified iron deposition. PA was operationalized as average daily steps. Linear regression models examined memory as a function of hippocampal QSM, PA, and their interaction. Higher bilateral hippocampal iron deposition correlated with worse memory but was not strongly related to PA. Covarying for demographics, PA moderated the relationship between bilateral hippocampal iron deposition and memory such that the negative effect of hippocampal QSM on memory performances was no longer significant above 9120 daily steps. PA may mitigate adverse iron-related pathways for memory health.
MeSH term(s)	Brain/metabolism ; Exercise ; Hippocampus/pathology ; Magnetic Resonance Imaging/methods ; Iron/metabolism
Chemical Substances	Iron (E1UOL152H7)
Language	English
Publishing date	2023-07-29
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	604505-4
ISSN	1558-1497 ; 0197-4580
ISSN (online)	1558-1497
ISSN	0197-4580
DOI	10.1016/j.neurobiolaging.2023.07.026
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Zs.A 1685: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG)
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Article ; Online: Data-driven physical actigraphy patterns relate to cognitive and vascular health in older adults.

Paolillo, Emily W / Lee, Shannon Y / VandeBunte, Anna / Saloner, Rowan / Gaynor, Leslie S / Djukic, Nina / Tsuei, Torie / Cobigo, Yann / Kramer, Joel H / Casaletto, Kaitlin B

Experimental gerontology

2023 Volume 178, Page(s) 112231

Abstract: Health benefits of physical activity (PA) are well known; however, specific PA patterns that relate most strongly to cognitive aging outcomes are poorly understood. We characterized latent profiles of PA among older adults and examined associations with ... ...

Abstract	Health benefits of physical activity (PA) are well known; however, specific PA patterns that relate most strongly to cognitive aging outcomes are poorly understood. We characterized latent profiles of PA among older adults and examined associations with cognition and vascular burden. 124 functionally normal older adults wore a Fitbit™ for 30 days. Daily average step count, sedentary time (0 steps/min), and high-intensity time (≥120 steps/min) were calculated. Participants completed neurocognitive testing assessing cognitive domains of executive functioning and memory; medical history, from which vascular burden (i.e., a count of cardiovascular conditions) was calculated; and brain MRI (n = 44). Subgroups with similar PA patterns were identified via latent profile analysis. Three latent PA classes emerged: Class 1
MeSH term(s)	Male ; Humans ; Aged ; Actigraphy ; Cognition ; Exercise/psychology ; Executive Function ; White Matter
Language	English
Publishing date	2023-06-09
Publishing country	England
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	390992-x
ISSN	1873-6815 ; 0531-5565
ISSN (online)	1873-6815
ISSN	0531-5565
DOI	10.1016/j.exger.2023.112231
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Zs.A 579: Show issues

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Article ; Online: Cerebrovascular Disease Correlates With Longitudinal Brain Atrophy in Virally Suppressed Older People Living With HIV.

Samboju, Vishal / Cobigo, Yann / Paul, Robert / Naasan, Georges / Hillis, Madeline / Tsuei, Torie / Javandel, Shireen / Valcour, Victor / Milanini, Benedetta

Journal of acquired immune deficiency syndromes (1999)

2021 Volume 87, Issue 4, Page(s) 1079–1085

Abstract: Background: Mild cognitive difficulties and progressive brain atrophy are observed in older people living with HIV (PLWH) despite persistent viral suppression. Whether cerebrovascular disease (CVD) risk factors and white matter hyperintensity (WMH) ... ...

Abstract	Background: Mild cognitive difficulties and progressive brain atrophy are observed in older people living with HIV (PLWH) despite persistent viral suppression. Whether cerebrovascular disease (CVD) risk factors and white matter hyperintensity (WMH) volume correspond to the observed progressive brain atrophy is not well understood. Methods: Longitudinal structural brain atrophy rates and WMH volume were examined among 57 HIV-infected participants and 40 demographically similar HIV-uninfected controls over an average (SD) of 3.4 (1.7) years. We investigated associations between CVD burden (presence of diabetes, hypertension, hyperlipidemia, obesity, smoking history, and atrial fibrillation) and WMH with atrophy over time. Results: The mean (SD) age was 64.8 (4.3) years for PLWH and 66.4 (3.2) years for controls. Participants and controls were similar in age and sex (P > 0.05). PLWH were persistently suppressed (VL <375 copies/mL with 93% <75 copies/mL). The total number of CVD risk factors did not associate with atrophy rates in any regions of interests examined; however, body mass index independently associated with progressive atrophy in the right precentral gyrus (β = -0.30; P = 0.023), parietal lobe (β = -0.28; P = 0.030), and frontal lobe atrophy (β = -0.27; P = 0.026) of the HIV-infected group. No associations were found in the HIV-uninfected group. In both groups, baseline WMH was associated with progressive atrophy rates bilaterally in the parietal gray in the HIV-infected group (β = -0.30; P = 0.034) and the HIV-uninfected participants (β = -0.37; P = 0.033). Conclusions: Body mass index and WMH are associated with atrophy in selective brain regions. However, CVD burden seems to partially contribute to progressive brain atrophy in older individuals regardless of HIV status, with similar effect sizes. Thus, CVD alone is unlikely to explain accelerated atrophy rates observed in virally suppressed PLWH. In older individuals, addressing modifiable CVD risk factors remains important to optimize brain health.
MeSH term(s)	Aged ; Anti-HIV Agents/therapeutic use ; Atrophy/etiology ; Atrophy/pathology ; Brain/pathology ; Cerebrovascular Disorders/etiology ; Cerebrovascular Disorders/pathology ; Female ; HIV Infections/complications ; HIV-1 ; Humans ; Longitudinal Studies ; Male ; Middle Aged
Chemical Substances	Anti-HIV Agents
Language	English
Publishing date	2021-06-21
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	645053-2
ISSN	1944-7884 ; 1077-9450 ; 0897-5965 ; 0894-9255 ; 1525-4135
ISSN (online)	1944-7884 ; 1077-9450
ISSN	0897-5965 ; 0894-9255 ; 1525-4135
DOI	10.1097/QAI.0000000000002683
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Zs.A 2442: Show issues

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Article ; Online: Scientific commentary on: "Phosphorylated tau in the retina correlates with tau pathology in the brain in Alzheimer's disease and primary tauopathies".

Acta neuropathologica

2024 Volume 147, Issue 1, Page(s) 30

MeSH term(s)	Humans ; Alzheimer Disease/pathology ; Tauopathies/pathology ; tau Proteins/metabolism ; Brain/pathology ; Retina/pathology
Chemical Substances	tau Proteins
Language	English
Publishing date	2024-02-03
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1079-0
ISSN	1432-0533 ; 0001-6322
ISSN (online)	1432-0533
ISSN	0001-6322
DOI	10.1007/s00401-023-02656-z
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Article ; Online: Spared speech fluency is associated with increased functional connectivity in the speech production network in semantic variant primary progressive aphasia.

Montembeault, Maxime / Miller, Zachary A / Geraudie, Amandine / Pressman, Peter / Slegers, Antoine / Millanski, Carly / Licata, Abigail / Ratnasiri, Buddhika / Mandelli, Maria Luisa / Henry, Maya / Cobigo, Yann / Rosen, Howard J / Miller, Bruce L / Brambati, Simona M / Gorno-Tempini, Maria Luisa / Battistella, Giovanni

Brain communications

2023 Volume 5, Issue 2, Page(s) fcad077

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 ...

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.
Language	English
Publishing date	2023-03-16
Publishing country	England
Document type	Journal Article
ISSN	2632-1297
ISSN (online)	2632-1297
DOI	10.1093/braincomms/fcad077
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Article: Literacy, but not memory, is associated with hippocampal connectivity in illiterate adults.

de Paula França Resende, Elisa / Lara, Vivian P / Santiago, Ana Luisa C / Friedlaender, Clarisse V / Rosen, Howard J / Brown, Jesse A / Cobigo, Yann / Silva, Lênio L G / de Souza, Leonardo Cruz / Rincon, Luciana / Grinberg, Lea T / Maciel, Francisca I P / Caramelli, Paulo

Research square

2023

Abstract: Background: The influence of hippocampal connectivity on memory performance is well established in individuals with high educational attainment. However, the role of hippocampal connectivity in illiterate populations remains poorly understood.: ... ...

Abstract	Background: The influence of hippocampal connectivity on memory performance is well established in individuals with high educational attainment. However, the role of hippocampal connectivity in illiterate populations remains poorly understood. Methods: Thirty-five illiterate adults were administered a literacy assessment (Test of Functional Health Literacy in Adults - TOFHLA), structural and resting state functional MRI and an episodic memory test (Free and Cued Selective Reminding Test). Illiteracy was defined as a TOFHLA score below 53. We evaluated the correlation between hippocampal connectivity at rest and both free recall and literacy scores. Results: Participants were mostly female (57.1%) and Black (84.8%), with a median age of 50 years. The median TOFHLA literacy score was 28.0 [21.0;42.5] out of 100 points and the median free recall score was 30.0 [26.2;35] out of 48 points. The median gray matter volume of both the left and right hippocampi was 2.3 [2.1; 2.4] cm Conclusions: Low literacy levels correlate with hippocampal connectivity in illiterate adults. The lack of association with memory scores might be associated with low brain reserve in illiterate adults.
Language	English
Publishing date	2023-06-16
Publishing country	United States
Document type	Preprint
DOI	10.21203/rs.3.rs-3053775/v1
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Article ; Online: Neuropsychiatric symptoms and imbalance of atrophy in behavioral variant frontotemporal dementia.

Sokołowski, Andrzej / Roy, Ashlin R K / Goh, Sheng-Yang M / Hardy, Emily G / Datta, Samir / Cobigo, Yann / Brown, Jesse A / Spina, Salvatore / Grinberg, Lea / Kramer, Joel / Rankin, Katherine P / Seeley, William W / Sturm, Virginia E / Rosen, Howard J / Miller, Bruce L / Perry, David C

Human brain mapping

2023 Volume 44, Issue 15, Page(s) 5013–5029

Abstract: Behavioral variant frontotemporal dementia is characterized by heterogeneous frontal, insular, and anterior temporal atrophy patterns that vary along left-right and dorso-ventral axes. Little is known about how these structural imbalances impact clinical ...

Abstract	Behavioral variant frontotemporal dementia is characterized by heterogeneous frontal, insular, and anterior temporal atrophy patterns that vary along left-right and dorso-ventral axes. Little is known about how these structural imbalances impact clinical symptomatology. The goal of this study was to assess the frequency of frontotemporal asymmetry (right- or left-lateralization) and dorsality (ventral or dorsal predominance of atrophy) and to investigate their clinical correlates. Neuropsychiatric symptoms and structural images were analyzed for 250 patients with behavioral variant frontotemporal dementia. Frontotemporal atrophy was most often symmetric while left-lateralized (9%) and right-lateralized (17%) atrophy were present in a minority of patients. Atrophy was more often ventral (32%) than dorsal (3%) predominant. Patients with right-lateralized atrophy were characterized by higher severity of abnormal eating behavior and hallucinations compared to those with left-lateralized atrophy. Subsequent analyses clarified that eating behavior was associated with right atrophy to a greater extent than a lack of left atrophy, and hallucinations were driven mainly by right atrophy. Dorsality analyses showed that anxiety, euphoria, and disinhibition correlated with ventral-predominant atrophy. Agitation, irritability, and depression showed greater severity with a lack of regional atrophy, including in dorsal regions. Aberrant motor behavior and apathy were not explained by asymmetry or dorsality. This study provides additional insight into how anatomical heterogeneity influences the clinical presentation of patients with behavioral variant frontotemporal dementia. Behavioral symptoms can be associated not only with the presence or absence of focal atrophy, but also with right/left or dorsal/ventral imbalance of gray matter volume.
MeSH term(s)	Humans ; Frontotemporal Dementia/complications ; Frontotemporal Dementia/diagnostic imaging ; Magnetic Resonance Imaging/methods ; Apathy ; Behavioral Symptoms ; Hallucinations ; Atrophy ; Neuropsychological Tests
Language	English
Publishing date	2023-07-20
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural
ZDB-ID	1197207-5
ISSN	1097-0193 ; 1065-9471
ISSN (online)	1097-0193
ISSN	1065-9471
DOI	10.1002/hbm.26428
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Zs.A 4028: Show issues

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Article ; Online: Bayesian Image Analysis in Fourier Space Using Data-Driven Priors (DD-BIFS)

Kornak, John / Boylan, Ross / Young, Karl / Wolf, Amy / Cobigo, Yann / Rosen, Howard

Information Processing and Management of Uncertainty in Knowledge-Based Systems

Abstract: Statistical image analysis is an extensive field that includes problems such as noise-reduction, de-blurring, feature enhancement, and object detection/identification, to name a few. Bayesian image analysis can improve image quality, by balancing a ... ...

Abstract	Statistical image analysis is an extensive field that includes problems such as noise-reduction, de-blurring, feature enhancement, and object detection/identification, to name a few. Bayesian image analysis can improve image quality, by balancing a priori expectations of image characteristics, with a model for the noise process via Bayes Theorem. We have previously given a reformulation of the conventional Bayesian image analysis paradigm in Fourier space, i.e. the prior distribution (the prior) and likelihood are given in terms of spatial frequency signals. By specifying the Bayesian model in Fourier space, spatially correlated priors, that are relatively difficult to model and compute in conventional image space, can be efficiently modeled as a set of independent processes across Fourier space. The originally inter-correlated and high-dimensional problem in image space is thereby broken down into a series of (trivially parallelizable) independent one-dimensional problems. In this paper we adapt this Fourier space process into a data-driven framework in which the Fourier space priors are built empirically from a database of images and then used to enhance future images. We will describe the data-driven Bayesian image analysis in Fourier space (DD-BIFS) modeling approach, illustrate it’s computational efficiency and speed. Finally, we give specific applications of DD-BIFS to improve the quality of arterial-spin-labeling (ASL) perfusion images via a database of human brain positron emission tomography (PET) images.
Keywords	covid19
Publisher	PMC
Document type	Article ; Online
DOI	10.1007/978-3-030-50153-2_29
Database	COVID19

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