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Biological sex and bilingualism: Its impact on risk and resilience for dementia

Author(s): Calvo N; Phillips N; Bialystok E; Einstein G;

Introduction: The relationship between biological sex, considered a risk factor for Alzheimer's disease (AD), and bilingualism, a resilience factor, is unclear. We assessed this relationship in 335 individuals with mild cognitive impairment (MCI) in a Canadian cohort. Methods: We used univariate analysis and structural equation modelling to study the ...

Article GUID: 41573422


Contextual use of male-male social information by Trinidadian guppies

Author(s): Brusseau AJP; Dumaresq-Synnott F; Morris J; Nagl AC; Ramnarine IW; Crane AL; Brown GE;

Decision-making among prey often involves balancing fitness-related activities, such as foraging and mating, with the need to avoid predation. These trade-offs may be influenced by sex, especially among sexually dimorphic species where males and females face different selection pressures. Consistent with the 'Distracted Male Hypothesis', male Trin ...

Article GUID: 41460359


Sex Differences in the Association Between Subjective Social Status and Imaging Markers of Cardiac Inflammation and Fibrosis

Author(s): Sánchez-Carro Y; Moukarzel M; Friedrich MG; Gouin JP; Luu JM;

Objective: Beyond objective socioeconomic status (SES) indicators, subjective social status (SSS), an individual's subjective perception of their social standing relative to others, has been independently linked to cardiovascular disease (CVD) morbidity and mortality. Some studies also report sex differences in the association between SSS and CVD. Thi ...

Article GUID: 40471966


Antipredator decisions of male Trinidadian guppies ( em Poecilia reticulata /em ) depend on social cues from females

Author(s): Brusseau AJP; Feyten LEA; Crane AL; Ramnarine IW; Ferrari MCO; Brown GE;

Many prey species rely on publicly available personal and social information regarding local predation threats to assess risks and make context-appropriate behavioral decisions. However, in sexually dimorphic species, males and females are expected to differ in the perceived costs and/or benefits associated with predator avoidance decisions. Recent studie ...

Article GUID: 40264715


Disruptive effects of d-amphetamine on conditioned sexual inhibition in the male rat

Author(s): Germé K; Persad D; Petit-Robinson J; Amir S; Pfaus JG;

Rationale: Male rats trained to associate a neutral odor (almond) with nonreceptive females during their initial sexual experiences develop a conditioned sexual inhibition (CSI) toward the female bearing the olfactory cue when given a choice in a final copulatory preference test between two receptive females (one unscented and one scented) in an open fiel ...

Article GUID: 40232387


Sex and APOE4-specific links between cardiometabolic risk factors and white matter alterations in individuals with a family history of Alzheimer s disease

Author(s): Tremblay SA; Nathan Spreng R; Wearn A; Alasmar Z; Pirhadi A; Tardif CL; Chakravarty MM; Villeneuve S; Leppert IR; Carbonell F; Medina YI; Steele CJ; Gauthier CJ;

Early detection of pathological changes in Alzheimer's disease (AD) has garnered significant attention in the last few decades as interventions aiming to prevent progression will likely be most effective when initiated early. White matter (WM) alterations are among the earliest changes in AD, ...

Article GUID: 40086421


Sex-specific effects of intensity and dose of physical activity on BOLD-fMRI cerebrovascular reactivity and cerebral pulsatility

Author(s): Potvin-Jutras Z; Intzandt B; Mohammadi H; Liu P; Chen JJ; Gauthier CJ;

Cerebrovascular reactivity (CVR) and cerebral pulsatility (CP) are important indicators of cerebrovascular health, which are associated with physical activity (PA). While sex differences influence the impact of PA on cerebrovascular health, sex-specific effects of PA intensity and dose on CP and CVR remains unknown. This study aimed to evaluate the sex-sp ...

Article GUID: 40079560


Facebook recruitment: understanding research relations Prior to data collection

Author(s): Young K; Browne K;

This article considers the multiple relations that emerge from and between Facebook commenters, as well as between commenters, researchers, and the research project during recruitment. To do so, we draw on our experiences of recruiting individuals who have concerns about or are opposed to a range of recent social and legal changes in 'post-equality ...

Article GUID: 39877298


Sex differences in the metabolism of glucose and fatty acids by adipose tissue and skeletal muscle in humans

Author(s): Costa DN; Santosa S; Jensen MD;

Adult males and females have markedly different body composition, energy expenditure, and have different degrees of risk for metabolic diseases. A major aspect of metabolic regulation involves the appropriate storage and disposal of glucose and fatty acids. The use of sophisticated calorimetry, tracer, and imaging techniques have provided insight into the ...

Article GUID: 39869194


Impact of a national dementia research consortium: The Canadian Consortium on Neurodegeneration in Aging (CCNA)

Author(s): Chertkow H; Phillips N; Rockwood K; Anderson N; Andrew MK; Bartha R; Beaudoin C; Bélanger N; Bellec P; Belleville S; Bergman H; Best S; Bethell J; Bherer L; Black S; Borrie M; Camicioli R; Carrier J; Cashman N; Chan S; Crowshoe L; Cuello ...

The Canadian Consortium on Neurodegeneration in Aging (CCNA) was created by the Canadian federal government through its health research funding agency, the Canadian Institutes for Health Research (CIHR), in 2014, as a response to the G7 initiative to fight dementia. Two five-year funding cycles ( ...

Article GUID: 39636028


Comprehensive Analysis of Age- and Sex-Related Expression of the Chaperone Protein Sigma-1R in the Mouse Brain

Author(s): Tarmoun K; Lachance V; Le Corvec V; Bélanger SM; Beaucaire G; Kourrich S;

Sigma-1R (S1R) is a ubiquitously distributed protein highly expressed in the brain and liver. It acts as a ligand-inducible chaperone protein localized at the endoplasmic reticulum. S1R participates in several signaling pathways that oversee diverse cellular and neurological functions, such as calcium and proteome homeostasis, neuronal activity, memory, a ...

Article GUID: 39335377


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