Publications by authors named "Xue-Qian Li"

Resilience to stressors has emerged as a major gerontological concept aiming to promote more positive outcomes for older adults. Achieving this aim relies on determining mechanisms underlying capacity to respond resiliently. This paper seeks proof of principle for the hypothesis that physical aspects of said capacity are rooted in the fitness of one's physiology governing stress response, conceptualized as a dynamical system.

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Out-of-home mobility and social participation have been identified as resources to postpone frailty. We aim to examine the mediating role and specific contribution of social out-of-home activities in frailty prevention. Data from the Survey of Health, Ageing, and Retirement in Europe (SHARE) waves six (w6), seven (w7), and eight (w8) were used.

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Background: Impaired respiratory function, measured via peak expiratory flow (PEF), has been associated with increased dementia risk. However, much of the current literature uses cross-sectional measures of PEF, whereas longitudinal relationships between changes in respiratory function and dementia risk are underexplored.

Methods: Using 10 years of data (2011-2021) from 2 439 adults ages 65 and older in the National Health and Aging Trends Study, we examined whether 5-year changes in PEF (2011-2016) were associated with risk for incident dementia over the subsequent 5-year period (2017-2021).

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Objectives: Globally, cisgender men who have sex with men experience sexual stigma, but limited investigation of cross-population scale performance hinder comparisons. As measurement invariance is a necessary but seldom-established criterion of valid cross-cultural comparisons, we assessed invariance in scales of stigma related to sexual behavior across 9 countries.

Methods: This secondary analysis used data collected from adult (mean age=29.

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Importance: Many older women are screened for breast cancer beyond guideline-recommended thresholds. Messaging holds promise to reduce overscreening.

Objective: To investigate the effect of a message on older women's support for and intentions of stopping breast cancer screening.

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Background: Public health campaigns have often used persuasive techniques to promote healthy behaviors but the use of persuasion by doctors is controversial. We sought to examine older women's perspectives.

Methods: We conducted semi-structured interviews with 20 community-dwelling older women from the Baltimore metropolitan area.

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Introduction: Physical frailty is reversible, but little is known about the sustainability of frailty remission and its impact on dementia.

Methods: Data were derived from the National Health and Aging Trends Study (NHATS) (2011 to 2021). Physical frailty was assessed using the Fried frailty phenotype, and frailty transition patterns across three waves were defined.

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Background: Amidst the rise of frailty among a globally aging population, olfactory decline has emerged as a harbinger of frailty and mortality in population-level studies. However, the relationships between frailty and the olfactory subdomains of identification (OI), discrimination (OD), and threshold (OT) remain unexplored. This study prospectively examined the association between olfactory subdomains and the physical frailty phenotype (PFP) to investigate olfactory evaluation as a means of frailty screening.

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Background: Many older women are screened for breast cancer beyond guideline-recommended thresholds. One contributor is pro-screening messaging from health care professionals, media, and family/friends. In this project, we developed and evaluated messages for reducing overscreening in older women.

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Background: People living with dementia (PLWD) have complex medication regimens, exposing them to increased risk of harm. Pragmatic deprescribing strategies that align with patient-care partner goals are needed.

Methods: A pilot study of a pharmacist-led intervention to optimize medications with patient-care partner priorities, ran May 2021-2022 at two health systems.

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Key Points: Photovoice, a qualitative method, visually depicted the daily lives of participants with frailty, providing insights into independence and symptom management to guide clinicians and researchers. This photovoice study uncovered subthemes of home safety and organization, revealing potential safety hazards like dialysis fluid storage, and suggests its potential use in geriatric nephrology. The findings emphasize the importance of integrating participant values and goals into care decisions and interventional design in the context of kidney transplant journeys for frail adults.

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Article Synopsis
  • The study investigated the relationship between frailty (physical weakness) and self-rated health (SRH) in older adults, focusing on how these factors relate to mortality risks.
  • Data was collected from over 5,300 adults aged 60 and above in China to analyze both frailty levels and health perceptions.
  • Findings showed that while frailty increases mortality risk, those who report poor health are also significantly at risk, and the combination of frailty and poor SRH can be crucial in understanding overall health outcomes.
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Physiological stress levels in response to sexual behavior stigma among men who have sex with men (MSM) in the United States (US) are understudied. The current study aims to explore the relationship between sexual behavior stigma and salivary cortisol both overall and stratified by race/ethnicity. If such an association exists, it may suggest that sexual behavior stigma can be physiologically measured or indicated by the presence of heightened salivary cortisol.

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While physical frailty has been recognized as a clinical entity for some time, the concept of cognitive frailty (CF) is now gaining increasing attention in the geriatrics research community. CF refers to the co-occurrence of physical frailty and cognitive impairment in older adults, which has been suggested as a potential precursor to both dementia and adverse physical outcomes. However, this condition represents a challenge for researchers and clinicians, as there remains a lack of consensus regarding the definition and diagnostic criteria for CF, which has limited its utility.

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Article Synopsis
  • The study investigates how the development of frailty and cognitive impairment (CI) over five years impacts cardiovascular health in older adults without a history of coronary artery disease.
  • It found that participants who developed both frailty and CI simultaneously faced the highest risk for major cardiovascular events, compared to those who developed them separately.
  • The research highlights the importance of diagnosing frailty and CI to better assess cardiovascular risks in older individuals.
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Background: Seasonal influenza causes significant morbidity and mortality with a disproportionately high disease burden in older adults. Strain-specific hemagglutination-inhibition (HAI) antibody titer is a well-established measure of humoral immunity against influenza and pre-vaccination HAI titer is a valuable indicator of pre-existing humoral immunity at the beginning of each influenza season in highly vaccinated older adults. While vaccine-induced HAI antibody titers are known to wane over time, accurate assessment of their interseason waning has been challenging.

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Background: Frailty assessment promises to identify older adults at risk for adverse consequences following stressors and target interventions to improve health outcomes. The Physical Frailty Phenotype (PFP) is a widely-studied, well validated assessment but incorporates performance-based slow walk and grip strength criteria that challenge its use in some clinical settings. Variants replacing performance-based elements with self-reported proxies have been proposed.

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Background: Frailty is associated with poor outcomes in surgical patients including kidney transplant (KT) recipients. Transplant centers that measure frailty have better pre- and postoperative outcomes. However, clinical utility of existing tools is low due to time constraints.

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Understanding the physiological basis of physical resilience to clinical stressors is crucial for the well-being of older adults. This article presents a novel framework to discover the biological underpinnings of physical resilience in older adults as part of the "Characterizing Resiliencies to Physical Stressors in Older Adults: A Dynamical Physiological Systems Approach" study, also known as The Study of Physical Resilience and Aging (SPRING). Physical resilience, defined as the capacity of a person to withstand clinical stressors and quickly recover or improve upon a baseline functional level, is examined in adults aged 55 years and older by studying the dynamics of stress response systems.

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Objectives: The objective of this study was to characterize the associations of sensory impairments, including olfaction (OI), vision (VI), hearing (HI), and touch (TI), with telomere length (TL) in a group of community-dwelling older adults who participated in the Health ABC study.

Methods: Across 1603 participants, OI was classified with the Brief Smell Identification Test (<11), HI with pure-tone averages (<25 dB), VI with visual acuity (20/50 or worse), and TI with monofilament testing (inability to detect three of four touches). Shorter TL was defined as the lowest quartile of sample TLs.

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Objective: To assess the longitudinal association between cognitive impairment and sarcopenia in a sample of Brazilian community-dwelling older adults.

Design: Nine-year observational prospective study.

Setting And Participants: A total of 521 community-dwelling older adults from 2 Brazilian sites of the Frailty in Brazilian Older Adults (FIBRA in Portuguese) study.

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Decline in neuromuscular function with aging is known to be a major determinant of disability and all-cause mortality in late life. Despite the importance of the problem, the neurobiology of age-associated muscle weakness is poorly understood. In a previous report, we performed untargeted metabolomics on frail older adults and discovered prominent alteration in the kynurenine pathway, the major route of dietary tryptophan degradation that produces neurotoxic intermediate metabolites.

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Objectives: To examine whether physical frailty onset before, after, or in concert with cognitive impairment is differentially associated with fall incidence in community-dwelling older adults.

Design: A longitudinal observational study.

Setting And Participants: Data from 1337 older adults age ≥65 years and free of physical frailty or cognitive impairment at baseline were obtained from the National Health Aging Trends Study (2011‒2017), a nationally representative cohort study of US older adult Medicare beneficiaries.

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