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How effective have Canadian national parks been at preventing landscape fragmentation?

Author(s): Freeman-Cole CE; Jaeger JAG;

While landscape connectivity is an important focus of Canada's conservation goals, Canadian national parks are vulnerable to habitat loss, the breaking-up of habitat patches, and a reduction in their connectivity to surrounding ecosystems. This study measured landscape fragmentation in 43 Canadian national parks and control areas throughout their hi ...

Article GUID: 42228295


The Effect of Aortic Regurgitation on Left Ventricular Flow Dynamics Assessed by 4D-Flow MRI

Author(s): Abdallah W; Darwish A; Garcia J; Kadem L;

Background: Aortic regurgitation (AR) alters normal blood flow patterns in the left ventricle (LV), affecting diastolic filling dynamics, and is commonly quantified by the regurgitant fraction (RF). However, conventional diagnostic methods have notable limitations, prompting growing interest in four-dimensional flow magnetic resonance imaging (4D-flow M ...

Article GUID: 42228301


Importin-β1 functions as a chromatin sensor to position the contractile ring for cytokinesis

Author(s): Brancheriau CR; Larocque K; Schick G; Tountas I; Perlman A; Piekny A;

Cytokinesis, the final step of cell division, relies on ingression of a precisely positioned actomyosin ring. Chromatin-associated Ran-GTP fine-tunes ring position, although the mechanism remains unclear. We hypothesize that depletion of Ran-GTP between segregating chromosomes leads to equatorial enrichment of importins, promoting recruitment of the sca ...

Article GUID: 42225064


Subthalamic segmentations in relation to deep brain stimulation volumes in Parkinson s disease

Author(s): Calvano A; Xiao Y; Steidel K; Loehrer PA; Ruppert-Junck MC; Nimsky C; Timmermann L; Bopp MHA; Pedrosa DJ;

Purpose: Accurate segmentation of the subthalamic nucleus (STN) is paramount for optimising outcomes under deep brain stimulation (DBS) in Parkinson's disease (PD). Clinically available tools like Brainlab Elements (BL-E) enable automated segmentations for surgical planning, yet their spati ...

Article GUID: 42225900


Multilingualism and cognitive reserve in older adults with, or at risk for, Alzheimer s disease: Evidence from resting-state functional connectivity

Author(s): Coulter K; Dash T; Best T; Grant N; Ansaldo AI; Phillips NA;

Speaking more than one language is hypothesized to lead to greater brain resilience in aging and Alzheimer's disease, resulting in a delay in the symptom onset of Alzheimer's disease. While previous research has used structural neuroimaging measures to explore the neural underpinnings of this protective effect, few studies have used functional b ...

Article GUID: 42208339


Keeping an Eye on Looking Measures: Towards More Robust Developmental Methods

Author(s): Sander-Montant A; Fibla L; Killam H; Byers-Heinlein K;

A persistent challenge in experimental developmental psychology is determining which of many possible outcome measures best captures underlying behaviors and processes. In the looking-while-listening paradigm for studying early word comprehension, researchers have developed more than 12 distinct outcome measures, but have limited empirical basis for cho ...

Article GUID: 42206598


Investigating substrate specificity in arogenate versus prephenate dehydratases

Author(s): Clayton EJ; Smith-Uffen M; Tribble TW; Duennwald ML; Kohalmi SE;

Background: Phenylalanine is an essential aromatic amino acid that can only be synthesized de novo by microorganisms and plants. In microorganisms, phenylalanine is synthesized through the prephenate pathway, requiring the activity of a prephenate dehydratase (PDT). In plants, phenylalanine is synthesized instead mostly through the arogenate pathway, re ...

Article GUID: 42204708


Atmospheric aging of tire rubber antioxidants forms complex mixtures that trigger inflammation in human macrophages

Author(s): Peng C; Liggio J; Moussa SG; Tang Y; Johannessen C; Zhang X; Zhang Z; Li L; Harner T; Saini A; Hung H; Wentzell J; Wheeler MJ; Dabek-Zlotorzynska E; Yassine M; Liu Q; Tang M; Friel-Bartlett Z; Abdul-Sater AA;

Antioxidants added to tires to prevent degradation have recently been recognized as emerging environmental contaminants. While their acute aquatic toxicity has raised concern, these compounds are also emitted to the atmosphere and can be associated with particulate matter (PM). On PM they can r ...

Article GUID: 42191547


Bilingual Families Align Their Languages During Naturalistic Interactions: Evidence from Two Bilingual Communities

Author(s): Fibla L; Kosie JE; Tsui RK; Potter CE; Lew-Williams C; Byers-Heinlein K;

Bilingual children learn their languages through rich interactions with caregivers within dynamic family contexts. However, little is known about how families align their two languages to support bilingual acquisition and how this varies across bilingual communities. This study examines language choice alignment across two communities: French-English fa ...

Article GUID: 42193667


Prevalence of Metabolically Healthy Obesity in Canadian Children and Adolescents at Entry to Pediatric Weight Management Clinic and One Year Later: A Secondary Analysis of CANadian Pediatric Weight Management Registry Data

Author(s): Cohen TR; Bains A; Ball GDC; Faustini C; Heidl A; Morrison KM;

Few studies have characterized metabolically healthy (MHO) and unhealthy obesity (MUO) in pediatric populations over time. The objective of this study was to determine the prevalence of MHO in children and adolescents enrolled in a weight management program and examine changes in cardiometabolic indicators over 1 year.Methods: Participants from the CANa ...

Article GUID: 42189064


Practices to Reduce Stigma and Discrimination Towards Older Transitional Housing Clients

Author(s): Canham SL; Richardson LR; Aaenson-Fletcher J; Weldrick R; Walsh CA;

Homelessness remains an enduring social issue, in part, due to the stigmatization of and discrimination toward people experiencing homelessness, known as homeism. Despite extant research on the topic, little is known about how homeism, enacted through stigmatization and discrimination, may occur within transitional housing programs or among older people ...

Article GUID: 42184413


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