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Article ; Online: Differential neural correlates underlying visuospatial versus semantic reasoning in autistic children.

Degré-Pelletier, Janie / Danis, Éliane / Thérien, Véronique D / Bernhardt, Boris / Barbeau, Elise B / Soulières, Isabelle

Cerebral cortex (New York, N.Y. : 1991)

2024 Volume 34, Issue 13, Page(s) 19–29

Abstract: While fronto-posterior underconnectivity has often been reported in autism, it was shown that different contexts may modulate between-group differences in functional connectivity. Here, we assessed how different task paradigms modulate functional ... ...

Abstract	While fronto-posterior underconnectivity has often been reported in autism, it was shown that different contexts may modulate between-group differences in functional connectivity. Here, we assessed how different task paradigms modulate functional connectivity differences in a young autistic sample relative to typically developing children. Twenty-three autistic and 23 typically developing children aged 6 to 15 years underwent functional magnetic resonance imaging (fMRI) scanning while completing a reasoning task with visuospatial versus semantic content. We observed distinct connectivity patterns in autistic versus typical children as a function of task type (visuospatial vs. semantic) and problem complexity (visual matching vs. reasoning), despite similar performance. For semantic reasoning problems, there was no significant between-group differences in connectivity. However, during visuospatial reasoning problems, we observed occipital-occipital, occipital-temporal, and occipital-frontal over-connectivity in autistic children relative to typical children. Also, increasing the complexity of visuospatial problems resulted in increased functional connectivity between occipital, posterior (temporal), and anterior (frontal) brain regions in autistic participants, more so than in typical children. Our results add to several studies now demonstrating that the connectivity alterations in autistic relative to neurotypical individuals are much more complex than previously thought and depend on both task type and task complexity and their respective underlying cognitive processes.
MeSH term(s)	Humans ; Child ; Male ; Adolescent ; Female ; Magnetic Resonance Imaging ; Semantics ; Autistic Disorder/physiopathology ; Autistic Disorder/diagnostic imaging ; Autistic Disorder/psychology ; Brain/diagnostic imaging ; Brain/physiopathology ; Brain Mapping ; Space Perception/physiology ; Neural Pathways/physiopathology ; Neural Pathways/diagnostic imaging
Language	English
Publishing date	2024-05-02
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1077450-6
ISSN	1460-2199 ; 1047-3211
ISSN (online)	1460-2199
ISSN	1047-3211
DOI	10.1093/cercor/bhae093
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Article ; Online: Reliability of an observation-based scoring grid to assess bimanual performance during unstandardized tasks in adults living with cerebral palsy.

Gagné-Pelletier, Léandre / Poitras, Isabelle / Flamand, Véronique H / Mercier, Catherine

Disability and rehabilitation

2023 , Page(s) 1–6

Abstract: Purpose: Most activities of daily living (ADLs) require the use of both upper extremities. However, few assessments exist to assess bimanual performance, especially among adults living with cerebral palsy (CP). The aim of this preliminary study is to ... ...

Abstract	Purpose: Most activities of daily living (ADLs) require the use of both upper extremities. However, few assessments exist to assess bimanual performance, especially among adults living with cerebral palsy (CP). The aim of this preliminary study is to assess the interrater reliability and convergent validity of the Assisting Hand Assessment (AHA) scoring grid applied to unstandardized ADLs. Materials and methods: For this validation study, nineteen adults living with spastic unilateral CP were videotaped performing seven bimanual ADLs. Three raters assessed the videos independently using the 20-item grid of the AHA. Gwet's AC2 was used to assess interrater reliability. Kendall's Tau-b correlation was used between the observation-based scoring grid and Jebsen-Taylor Hand Function Test (JTHFT) scores to assess convergent validity. Results: Interrater reliability was good (0.84, SD = 0.02). The correlation with the JTHFT was high (τb = -0.74; Conclusion: The results show the potential of using an observation-based scoring grid with unstandardized ADLs to assess bimanual performance in adults living with CP, but further research on psychometric properties is needed. This method allows for an assessment that is occupation-oriented, ecological, and meaningful.
Language	English
Publishing date	2023-09-08
Publishing country	England
Document type	Journal Article
ZDB-ID	1104775-6
ISSN	1464-5165 ; 0963-8288
ISSN (online)	1464-5165
ISSN	0963-8288
DOI	10.1080/09638288.2023.2254700
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Article ; Online: Optimizing Epoch Length and Activity Count Threshold Parameters in Accelerometry: Enhancing Upper Extremity Use Quantification in Cerebral Palsy.

Poitras, Isabelle / Gagné-Pelletier, Léandre / Clouâtre, Jade / Flamand, Véronique H / Campeau-Lecours, Alexandre / Mercier, Catherine

Sensors (Basel, Switzerland)

2024 Volume 24, Issue 4

Abstract: Various accelerometry protocols have been used to quantify upper extremity (UE) activity, encompassing diverse epoch lengths and thresholding methods. However, there is no consensus on the most effective approach. The aim of this study was to delineate ... ...

Abstract	Various accelerometry protocols have been used to quantify upper extremity (UE) activity, encompassing diverse epoch lengths and thresholding methods. However, there is no consensus on the most effective approach. The aim of this study was to delineate the optimal parameters for analyzing accelerometry data to quantify UE use in individuals with unilateral cerebral palsy (CP). Methods: A group of adults with CP ( Results: In adults, results are comparable across epoch lengths, with the best Conclusions: The combination of epoch length and
MeSH term(s)	Child ; Adult ; Humans ; Cerebral Palsy ; Activities of Daily Living ; Upper Extremity ; Accelerometry/methods ; Wrist
Language	English
Publishing date	2024-02-08
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s24041100
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Article ; Online: Diseases of despair in early adulthood: The complex role of social relationships.

Dupéré, Véronique / Dion, Eric / Pelletier-Dumas, Mathieu / Lacourse, Eric / Archambault, Isabelle / Cantin, Stéphane / Ahn, Jiseul Sophia

Developmental psychology

2024 Volume 60, Issue 5, Page(s) 791–808

Abstract: Diseases of despair," most prominently depressive and substance-related problems, diminish the prospects of many young adults, especially those with lower levels of education. Yet many young adults in that situation avoid these problems. Close ... ...

Abstract	"Diseases of despair," most prominently depressive and substance-related problems, diminish the prospects of many young adults, especially those with lower levels of education. Yet many young adults in that situation avoid these problems. Close relationships are thought to be a key factor underpinning risk and resilience among this group. To examine this premise, this study explored links, beyond potential confounders assessed in adolescence, between strengths and strains in the social domain and markers of despair in the early and mid-20s in a Canadian sample overrepresenting youth without postsecondary credentials (
MeSH term(s)	Humans ; Male ; Female ; Young Adult ; Depression/psychology ; Adolescent ; Interpersonal Relations ; Canada ; Substance-Related Disorders ; Adult ; Friends/psychology ; Social Support
Language	English
Publishing date	2024-04-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	2066223-3
ISSN	1939-0599 ; 0012-1649
ISSN (online)	1939-0599
ISSN	0012-1649
DOI	10.1037/dev0001716
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Article ; Online: Semantic and Visuospatial Fluid Reasoning in School-Aged Autistic Children.

Danis, Eliane / Nader, Anne-Marie / Degré-Pelletier, Janie / Soulières, Isabelle

Journal of autism and developmental disorders

2022 Volume 53, Issue 12, Page(s) 4719–4730

Abstract: In light of the known visuoperceptual strengths and altered language skills in autism, we investigated the impact of problem content (semantic/visuospatial) combined with complexity and presence of lures on fluid reasoning in 43 autistic and 41 typical ... ...

Abstract	In light of the known visuoperceptual strengths and altered language skills in autism, we investigated the impact of problem content (semantic/visuospatial) combined with complexity and presence of lures on fluid reasoning in 43 autistic and 41 typical children (6-13 years old). Increased complexity and presence of lures diminished performance, but less so as the children's age increased. Typical children were slightly more accurate overall, whereas autistic children were faster at solving complex visuospatial problems. Thus, reasoning could rely more extensively on visuospatial strategies in autistic versus typical children. A combined speed-accuracy measure revealed similar performance in both groups, suggesting a similar pace in fluid reasoning development. Visual presentation of conceptual information seems to suit the reasoning processes of autistic children.
MeSH term(s)	Humans ; Child ; Adolescent ; Autistic Disorder/diagnosis ; Semantics ; Autism Spectrum Disorder/diagnosis ; Problem Solving ; Cognition
Language	English
Publishing date	2022-09-22
Publishing country	United States
Document type	Journal Article
ZDB-ID	391999-7
ISSN	1573-3432 ; 0162-3257
ISSN (online)	1573-3432
ISSN	0162-3257
DOI	10.1007/s10803-022-05746-1
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Article ; Online: Different levels of visuospatial abilities linked to differential brain correlates underlying visual mental segmentation processes in autism.

Thérien, Véronique D / Degré-Pelletier, Janie / Barbeau, Elise B / Samson, Fabienne / Soulières, Isabelle

Cerebral cortex (New York, N.Y. : 1991)

2023 Volume 33, Issue 14, Page(s) 9186–9211

Abstract: The neural underpinnings of enhanced locally oriented visual processing that are specific to autistics with a Wechsler's Block Design (BD) peak are largely unknown. Here, we investigated the brain correlates underlying visual segmentation associated with ...

Abstract	The neural underpinnings of enhanced locally oriented visual processing that are specific to autistics with a Wechsler's Block Design (BD) peak are largely unknown. Here, we investigated the brain correlates underlying visual segmentation associated with the well-established autistic superior visuospatial abilities in distinct subgroups using functional magnetic resonance imaging. This study included 31 male autistic adults (15 with (AUTp) and 16 without (AUTnp) a BD peak) and 28 male adults with typical development (TYP). Participants completed a computerized adapted BD task with models having low and high perceptual cohesiveness (PC). Despite similar behavioral performances, AUTp and AUTnp showed generally higher occipital activation compared with TYP participants. Compared with both AUTnp and TYP participants, the AUTp group showed enhanced task-related functional connectivity within posterior visuoperceptual regions and decreased functional connectivity between frontal and occipital-temporal regions. A diminished modulation in frontal and parietal regions in response to increased PC was also found in AUTp participants, suggesting heavier reliance on low-level processing of global figures. This study demonstrates that enhanced visual functioning is specific to a cognitive phenotypic subgroup of autistics with superior visuospatial abilities and reinforces the need to address autistic heterogeneity by good cognitive characterization of samples in future studies.
MeSH term(s)	Adult ; Humans ; Male ; Autistic Disorder ; Brain/diagnostic imaging ; Visual Perception/physiology ; Brain Mapping/methods ; Occipital Lobe ; Magnetic Resonance Imaging/methods
Language	English
Publishing date	2023-06-15
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1077450-6
ISSN	1460-2199 ; 1047-3211
ISSN (online)	1460-2199
ISSN	1047-3211
DOI	10.1093/cercor/bhad195
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Article ; Online: Platelet extracellular vesicles and their mitochondrial content improve the mitochondrial bioenergetics of cellular immune recipients.

Pelletier, Martin / Breton, Yann / Allaeys, Isabelle / Becker, Yann / Benson, Tom / Boilard, Eric

Transfusion

2023 Volume 63, Issue 10, Page(s) 1983–1996

Abstract: Background: Mitochondria play a critical role in the production of cell energy and the regulation of cell death. Therefore, mitochondria orchestrate numerous cell effector functions, including fine-tuning the immune system. While mitochondria are mainly ...

Abstract	Background: Mitochondria play a critical role in the production of cell energy and the regulation of cell death. Therefore, mitochondria orchestrate numerous cell effector functions, including fine-tuning the immune system. While mitochondria are mainly found intracellularly, they can escape the confine of the cell during the process of extracellular vesicle release. Platelets patrol blood vessels to ensure vasculature integrity and to support the immune system. In blood, platelets are the primary source of circulating mitochondria. Activated platelets produce extracellular vesicles, including a subset of mitochondria-containing vesicles. Study design and methods: We characterized mitochondrial functions in platelet-derived extracellular vesicles, and examined whether they could impact the bioenergetics of cellular immune recipients using an extracellular flux analyzer to measure real-time bioenergetics. Results: We validated that extracellular vesicles derived from activated platelets contain the necessary mitochondrial machinery to respirate and generate energy. Moreover, neutrophils and monocytes efficiently captured platelet-derived extracellular vesicles, enhancing their mitochondrial fitness. This process required functional mitochondria from donor platelets, as it was abolished by the inactivation of extracellular mitochondria using mitochondrial poison. Discussion: Together, the data suggest that extracellular mitochondria produced by platelets may support other metabolic functions through transcellular bioenergetics.
MeSH term(s)	Humans ; Blood Platelets/metabolism ; Mitochondria/metabolism ; Energy Metabolism/physiology ; Extracellular Vesicles/metabolism ; Exercise
Language	English
Publishing date	2023-08-29
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	208417-x
ISSN	1537-2995 ; 0041-1132
ISSN (online)	1537-2995
ISSN	0041-1132
DOI	10.1111/trf.17524
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Article ; Online: Montreal Cognitive Assessment and the Clock Drawing Test to Identify MCI and Predict Dementia in Isolated REM Sleep Behavior Disorder.

Cogné, Émile / Postuma, Ronald B / Chasles, Marie-Joëlle / De Roy, Jessie / Montplaisir, Jacques / Pelletier, Amélie / Rouleau, Isabelle / Gagnon, Jean-François

Neurology

2024 Volume 102, Issue 4, Page(s) e208020

Abstract: Background and objectives: Patients with isolated/idiopathic REM sleep behavior disorder (iRBD) are at high risk for developing mild cognitive impairment (MCI) and dementia with Lewy bodies (DLB). However, there is a lack of scientific knowledge ... ...

Abstract	Background and objectives: Patients with isolated/idiopathic REM sleep behavior disorder (iRBD) are at high risk for developing mild cognitive impairment (MCI) and dementia with Lewy bodies (DLB). However, there is a lack of scientific knowledge regarding the accuracy of cognitive screening tools to identify these conditions in iRBD. This study aimed to determine in iRBD the psychometrics of 2 screening tests to discriminate patients with MCI and those at risk of DLB. Methods: We retrospectively selected and followed 64 patients with polysomnography-confirmed iRBD seen in sleep clinic between 2006 and 2021, 32 with MCI (mean age 68.44 years, 72% men), 32 without MCI (67.78 years, 66% men), and 32 controls (69.84 years, 47% men). Participants underwent a neurologic evaluation and neuropsychological assessment for MCI diagnosis. They also completed the Montreal Cognitive Assessment (MoCA) and Clock Drawing Test (CDT). Fifty-three patients were followed (mean of 5.10 ± 2.64 years); 6 developed DLB, and 16 developed Parkinson disease. An independent cohort of 10 patients with iRBD who later developed DLB was also recruited and followed. Receiver operating characteristic curves with area under the curve (AUC) were performed assessing the discriminant value of the MoCA and CDT. Results: The cut-off values that best differentiated patients who developed DLB from controls were on the MoCA total score (≤25/30 with 100% [95% CI 61%-100%] sensitivity and 78% [61%-89%] specificity, AUC = 0.888) and delayed recall (≤3/5 with 83% [44%-97%] sensitivity and 78% [61%-89%] specificity, AUC = 0.875). Both values yielded a sensitivity of 90% (60%-98%) to detect patients at risk of DLB in the independent cohort. Cutoffs that best discriminated patients with MCI from controls were: ≤25/30 (MoCA total score) with 72% [55%-84%] sensitivity, 78% [61%-89%] specificity, AUC = 0.803 and ≤2/5 (MoCA delayed recall) with 63% [45%-77%] sensitivity, 94% [80%-98%] specificity, AUC = 0.843. No acceptable optimal values were found for the CDT. Discussion: In iRBD, the MoCA demonstrates adequate psychometric properties to identify patients most at risk of developing DLB and to screen for MCI, whereas the CDT does not. Classification of evidence: This study provides Class II evidence that the MoCA, but not the CDT, is useful in screening patients with iRBD for the risk of developing DLB.
MeSH term(s)	Male ; Humans ; Aged ; Female ; REM Sleep Behavior Disorder/diagnosis ; Retrospective Studies ; Cognitive Dysfunction/diagnosis ; Neuropsychological Tests ; Mental Status and Dementia Tests ; Dementia/diagnosis
Language	English
Publishing date	2024-01-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	207147-2
ISSN	1526-632X ; 0028-3878
ISSN (online)	1526-632X
ISSN	0028-3878
DOI	10.1212/WNL.0000000000208020
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Article ; Online: Use of innovative, cross-disciplinary in vitro, in silico and in vivo approaches to characterize the metabolism of chloro-alpha-pyrrolidinovalerophenone (4-Cl-PVP)

Pelletier, Romain / Le Daré, Brendan / Ferron, Pierre-Jean / Le Bouëdec, Diane / Kernalléguen, Angéline / Morel, Isabelle / Gicquel, Thomas

Arch Toxicol. 2023 Mar., v. 97, no. 3, p. 671-683

2023 , Page(s) 671–683

Abstract: Synthetic cathinones constitute a family of new psychoactive substances, the consumption of which is increasingly worldwide. A lack of metabolic knowledge limits the detection of these compounds in cases of intoxication. Here, we used an innovative cross- ...

Abstract	Synthetic cathinones constitute a family of new psychoactive substances, the consumption of which is increasingly worldwide. A lack of metabolic knowledge limits the detection of these compounds in cases of intoxication. Here, we used an innovative cross-disciplinary approach to study the metabolism of the newly emerging cathinone chloro-alpha-pyrrolidinovalerophenone (4-Cl-PVP). Three complementary approaches (in silico, in vitro, and in vivo) were used to identify putative 4-Cl-PVP metabolites that could be used as additional consumption markers. The in silico approach used predictive software packages. Molecular networking was used as an innovative bioinformatics approach for re-processing high-resolution tandem mass spectrometry data acquired with both in vitro and in vivo samples. In vitro experiments were performed by incubating 4-Cl-PVP (20 µM) for four different durations with a metabolically competent human hepatic cell model (differentiated HepaRG cells). In vivo samples (blood and urine) were obtained from a patient known to have consumed 4-Cl-PVP. The in silico software predicted 17 putative metabolites, and molecular networking identified 10 metabolites in vitro. On admission to the intensive care unit, the patient’s plasma and urine 4-Cl-PVP concentrations were, respectively, 34.4 and 1018.6 µg/L. An in vivo analysis identified the presence of five additional glucuronoconjugated 4-Cl-PVP derivatives in the urine. Our combination of a cross-disciplinary approach with molecular networking enabled the detection of 15 4-Cl-PVP metabolites, 10 of them had not previously been reported in the literature. Two metabolites appeared to be particular relevant candidate as 4-Cl-PVP consumption markers in cases of intoxication: hydroxy-4-Cl-PVP (m/z 282.1254) and dihydroxy-4-Cl-PVP (m/z 298.1204).
Keywords	bioinformatics ; blood ; computer simulation ; computer software ; humans ; metabolism ; metabolites ; models ; patients ; poisoning ; tandem mass spectrometry ; urine
Language	English
Dates of publication	2023-03
Size	p. 671-683
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	124992-7
ISSN	1432-0738 ; 0340-5761
ISSN (online)	1432-0738
ISSN	0340-5761
DOI	10.1007/s00204-022-03427-7
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Article ; Online: [No title information]

Le Daré, Brendan / Couette, Aurélien / Pelletier, Romain / Morel, Isabelle / Gicquel, Thomas

Annales de biologie clinique

2022 Volume 80, Issue 2, Page(s) 141–146

Abstract: L'α- et la β-amanitine sont de puissantes toxines de champignons supérieurs responsables de cytolyses hépatiques graves pouvant menacer le pronostic vital. En France, les données des centres antipoison rapportent un nombre croissant d'intoxications aux ... ...

Title translation	Mise en évidence d’intoxications par ingestion de champignons supérieurs : expérience au CHU de Rennes.
Abstract	L'α- et la β-amanitine sont de puissantes toxines de champignons supérieurs responsables de cytolyses hépatiques graves pouvant menacer le pronostic vital. En France, les données des centres antipoison rapportent un nombre croissant d'intoxications aux champignons depuis 2016, justifiant le besoin de méthodes de diagnostic biologique robustes. En laboratoire de toxicologie hospitalière, l'objectivation d'une intoxication par les amanitines à partir de prélèvements sanguins ou urinaires constitue ainsi un élément important dans la prise en charge du patient intoxiqué. L'objectif de ce travail consiste à réaliser une mini-revue de la littérature sur le dosage des amanitines dans les fluides biologiques pour le diagnostic des intoxications aux amanitines. Les caractéristiques des amanitines, les méthodes analytiques, les données d'interprétation, les applications pratiques ainsi que les perspectives d'utilisation des techniques de dosage y sont présentées. À travers une comparaison de deux techniques analytiques de chromatographie liquide couplée à de la spectrométrie de masse en tandem utilisées au Centre hospitalier universitaire de Rennes (Waters Xevo TQ XSTM et Thermo Scientific Q ExactiveTM), cet article présente également le retour d'expérience de biologistes médicaux dans l'amélioration continue des méthodes de dosages des amanitines.
MeSH term(s)	Eating ; France ; Fungi ; Hospitals ; Humans
Language	French
Publishing date	2022-06-29
Publishing country	France
Document type	Journal Article
ZDB-ID	418098-7
ISSN	1950-6112 ; 0003-3898
ISSN (online)	1950-6112
ISSN	0003-3898
DOI	10.1684/abc.2022.1710
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