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Controlling Temozolomide Efficacy by Light-Dependent Inhibition of O sup 6 /sup ‑Methylguanine DNA Methyltransferase

Author(s): Lopez-Miranda IR; Sim JI; Juneau G; Wilds CJ; Beharry AA;

The DNA repair enzyme O6-Methylguanine DNA Methyltransferase (MGMT) is a major contributor in conferring resistance to alkylating agents such as temozolomide (TMZ) in cancers. The use of MGMT inhibitors can suppress resistance and enhance the efficacy of TMZ. However, current inhibitors are nonselective for cancer cells, and as a result, MGMT is also inhi ...

Article GUID: 41531960


The temporal effects of auditory and visual immersion on speech level in virtual environments

Author(s): Zhang XN; Shamei A; Grond F; Verduyckt I; Bouserhal RE;

Speech takes place in physical environments with visual and acoustic properties, yet how these elements and their interaction influence speech production is not fully understood. While a room's appearance can suggest its acoustics, it is unclear whether people adjust their speech based on this visual information. Previous research shows that higher re ...

Article GUID: 41528171


Aquatic therapy compared to standard care for chronic low back pain: a randomized controlled trial

Author(s): Vaillancourt N; Montpetit C; Rosenstein B; Fortin M;

Background: Anxiety, depression, and pain-related fears are highly prevalent among individuals with chronic low back pain (CLBP). While aquatic therapy is a promising treatment modality for CLBP, its effects on psychological factors remain poorly understood. Objective: To compare the effects of aquatic therapy (AT) versus standard care (SC) on psychologi ...

Article GUID: 41527881


Overlap and Covalency in a κN-Arylnitrosyl Cu(II) Metalloradical Formed by Hydroxylamine Oxidative Binding

Author(s): MacKay A; Zsombor-Pindera J; Effaty F; Sheibany N; Gennarini F; Habibian M; Chen F; Askari MS; Brytskyi M; Kroeker S; Kennepohl P; Ottenwaelder X;

Redox noninnocent ligands present opportunities to access reactive metal-radical complexes, but competing redox pathways often hinder their selective formation. Here, a pentadentate arylhydroxylamine-containing (ArNHOH) ligand directs copper salts to form a single, well-defined CuII-arylnitrosyl ...

Article GUID: 41524899


Synthesis and Acidic pH-Responsive Disassembly of Dual-Location Shell-Sheddable/Core-Degradable Block Copolymer Nanoassemblies and Their Controlled Drug Delivery

Author(s): Andrade-Gagnon B; Casillas-Popova SN; Shamekhi M; Bairagi K; Peslherbe GH; Oh JK;

The development of acidic pH-responsive degradable amphiphilic block copolymers (ABPs) and their nanoassemblies has been extensively explored as a promising platform for tumor-targeting drug delivery and cancer therapy. Despite tremendous advances, most acidic pH-degradable ABP nanoassemblies have been designed with acid-labile groups positioned in a sing ...

Article GUID: 41524627


Spatiotemporal Evolution and Anomaly Assessment of Wildfire-Induced Air Pollution Across Canada Using Satellite AOD Analysis

Author(s): Su Y; Wang Z; Fu H; Yang A; Chen X; An C;

The 2023 wildfires caused serious riks to air quality and public health across various provinces in Canada, particularly during the period from May to June. This study aims to systematically evaluate the impact of the May-June wildfire events on air pollution in Canada using satellite Aerosol Optical Depth (AOD) data, along with the Hybrid Single-Particle ...

Article GUID: 41520990


Sleep spindles and slow oscillations predict neurofilament‐light, neurogranin 36, Chitinase‐3‐like protein‐1 and cognition in mild to moderate Alzheimer's Disease

Author(s): Paez A; Dogaheh SB; Gillman SO; Carnes A; Dakterzada F; Barbe F; Piñol-Ripoll G; Dang-Vu TT;

Background: Sleep is essential for brain-health, including clearance of ß-amyloid (Aß), tau, and otherpromising diagnostic markers of neurodegeneration and progression in Alzheimer's Disease (AD): cerebrospinal fluid neurofilament-light chain (NfL), neurogranin-36 (NG-36), an ...

Article GUID: 41512123


The interplay between orexin, neurodegeneration, cognition and sleep microarchitecture in mild to moderate Alzheimer's Disease

Author(s): Paez A; Piñol-Ripoll G; Dogaheh SB; Gillman SO; Dakterzada F; Carnes A; Barbe F; Dang-Vu TT;

Background: Cerebrospinal fluid (CSF) orexin levels are higher in MCI and AD and associated with sleep deterioration, increasing risk of cognitive decline and Alzheimer's disease (AD) progression. Orexin-A is a key sleep-wake cycle regulator. Dual orexin receptor antagonists ...

Article GUID: 41512277


Associations between brain and cognitive resilience, tau load and extent in Alzheimer's disease

Author(s): Mitchell SW; Chan T; Trudel L; Hosseini SA; Macedo AC; Gonçalves MP; Rahmouni N; Hall BJ; Socualaya KMQ; Therriault J; Servaes S; Bezgin G; Zheng Y; Aumont E; Wang YT; Arias JF; Real APB; Jia WL; Hopewell R; Hsiao C; Soucy JP; Vitali P; ...

Background: Brain and cognitive resilience (BR, CR) reflect the capacity to maintain structural integrity and cognitive function despite pathological tau deposition in Alzheimer's disease (AD). Tau pathology can be characterized in terms of spatial extent of tauopathy (SEOT) ...

Article GUID: 41512332


Continuous Theta Burst to Supplementary Motor Area Modulates Groove

Author(s): Spiech C; Martínez MG; Lazzari G; Penhune V;

The pleasurable urge to move to music ("groove") has been shown to be greatest for moderately complex musical rhythms. This is thought to occur because temporal predictions from the motor system reinforce our perception of the beat when there is a balance between expectation and surprise. The supplementary motor area (SMA) has been identified as ...

Article GUID: 41511416


Towards user-centered interactive medical image segmentation in VR with an assistive AI agent

Author(s): Spiegler P; Harirpoush A; Xiao Y;

Crucial in disease analysis and surgical planning, manual segmentation of volumetric medical scans (e.g. MRI, CT) is laborious, error-prone, and challenging to master, while fully automatic algorithms can benefit from user feedback. Therefore, with the complementary power of the latest radiological AI foundation models and virtual reality (VR)'s intui ...

Article GUID: 41509996


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