Mechanism and clinical implication of gut dysbiosis in degenerative abdominal aortic aneurysm: A systematic review.

The gut microbiome is the entirety of microorganisms and their genomes residing in the gut, characterised by diversity, stability, and resilience. Disrupted gut microbiome has been implicated in multiple disease entities. The aim of this paper is to summarise the rapidly evolving contemporary evidence of gut dysbiosis on the development and progression of abdominal aortic aneurysm (AAA), discuss possible mechanisms, and explore potential microbiota-targeted interventions and prognostic markers for AAA. A systematic literature search was performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, using PubMed, ScienceDirect, Web of Science, Ovid, Embase. Search terms of "microbiome" OR "dysbiosis" OR "microorganism"; AND "aneurysm" OR "dilatation" OR "aorta" were used. Study endpoints included effects of microbiota on AAA formation, effects of specific type of bacteria and its metabolite on AAA formation, and pre- or post-treatment by novel small-molecules/inhibitors. From May to August 2023, a total of twelve animal studies and eight human studies were included. Akkermansia muciniphila, Lactobacillus acidophilus and species from the Bacteroidetes phylum were associated with lower AAA incidence in both animal and human studies, while Proteobacteria phylum, Campylobacter, Fusobacterium and Faecalibacterium prausnitzii were found to be in abundance in the AAA group and were associated with larger aneurysms. The diversity of gut microbiota was inversely correlated with AAA diameter. Three important mechanisms were identified: including trimethylamine N-oxide pathway, butyric acid pathway, and aberrant tryptophan metabolism. With our expanding knowledge of the downstream pathogenic mechanisms of gut dysbiosis, novel therapeutics such as short-chain fatty acids and spermidine, as well as prognostic biomarkers such as TMAO have yielded promising preclinical results. In conclusion, there is strong evidence corroborating the role of gut dysbiosis in the pathogenesis of AAA, wherein its therapeutic and prognostic potential deserves further exploration.

Journey to inpatient hospice care: A qualitative study on the decision-making process of Chinese family caregivers of persons with terminal cancer.

OBJECTIVE: To understand family caregivers' decision-making process to place their family members with terminal cancer in inpatient hospice care, especially in the social-cultural contexts whereby the caregivers have a dominant say about the care of their seriously ill family members. METHODS: A qualitative study with a phenomenological approach was undertaken to understand the lived experience of caregivers of persons with terminal cancer in the decision-making process. Semi-structured qualitative interviews were conducted with a purposive sample of 17 caregivers in Shanghai, China. Thematic analysis was used to analyze the data. RESULTS: The caregivers underwent a winding and socioculturally mediated four-stage process. The stages are (i) trigger for alternatives: lost hope for a cure, (ii) meandering the see-saw process, (iii) the last straws: physical limitations and witnessing unbearable suffering, and (iv) the aftermath: acceptance versus lingering hope. Caregivers' attitudes towards death and their family members with advanced cancer expressed care wishes influence the state of the aftermath. CONCLUSIONS: Chinese sociocultural values and beliefs about caregiving and death provide insightful explanations for the observed process. PRACTICAL IMPLICATIONS: Training healthcare professionals in cultural competence, developing an effective hospice referral system, and delivering socioculturally acceptable death education are critical interventions to facilitate better decision-making experiences.

Prevalence and Significance of the Vessel-Cluster Sign on Susceptibility-Weighted Imaging in Patients With Severe Small Vessel Disease.

BACKGROUND: Magnetic resonance susceptibility-weighted imaging (SWI) can identify small brain blood vessels that contain deoxygenated blood due to its induced magnetic field disturbance. We observed focal clusters of possible dilated small vessels on SWI in white matter in severe small vessel disease (SVD). We assessed their prevalence, associations with SVD lesions and vascular reactivity in patients with sporadic SVD and in patients with Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL). METHODS: Secondary cross-sectional analysis of a prospective multicentre observational study of patients with either sporadic SVD or CADASIL (INVESTIGATE-SVD) studied with 3 Tesla MRI including blood-oxygen-level-dependent-MRI cerebrovascular reactivity (CVR). Two independent raters evaluated SWI sequences to identify "vessel-clusters" in white matter as focal low-signal dots/lines with small vessel appearance (interrater agreement, kappa statistic= 0.66). We assessed per-patient and per-cluster associations with SVD lesions type and severity on structural MRI sequences. We also assessed CVR within and at 2-voxel concentric intervals around the vessel-clusters using contralateral volumes as reference. RESULTS: Amongst the 77 patients enrolled, 76 had usable SWI sequences, 45 with sporadic SVD [mean age 64 years (SD 11), 26 males (58%)] and 31 with CADASIL [53 years (11), 15 males (48%)]. We identified 94 vessel-clusters in 36/76 patients (15/45 sporadic SVD, 21/31 CADASIL). In covariate-adjusted analysis, patients with vessel-clusters had more lacunes (OR, 95%CI) (1.30, 1.05-1.62), higher white matter hyperintensity (WMH) volume (per-log10 increase, 1.92, 1.04-3.56), lower CVR in normal appearing white matter (per %/mmHg, 0.77 (0.60-0.99), compared with patients without vessel-clusters. Fifty-seven of 94 vessel-clusters (61%) corresponded to non-cavitated or partially-cavitated WMH on Fluid Attenuated Inversion Recovery, and 37/94 (39%) to complete cavities. CVR magnitude was lower than in corresponding contralateral volumes [mean difference (SD), t, p] within vessel-cluster volumes [-0.00046 (0.00088), -3.021, 0.005) and in surrounding volume expansion shells up to 4 voxels [-0.00011 (0.00031), -2.140, 0.039; and -0.00010 (0.00027), -2.295, 0.028] in vessel-clusters with complete cavities, but not in vessel-clusters without complete cavitation. CONCLUSIONS: Vessel-clusters might correspond to maximally dilated vessels in white matter that are approaching complete tissue injury and cavitation. The pathophysiological significance of this new feature warrants further longitudinal investigation.

Safeguarding health equality for the disadvantaged during the COVID-19 pandemic: Lessons learned for the social work profession.

An evaluation of the role played by the social work profession during the outbreak of COVID-19 is necessary. Although social workers have made efforts to address people's needs during the pandemic, it is worth examining the role they have played in safeguarding health equality. Focusing on the case of Hong Kong, we found that the profession was generally ill-prepared for the outbreak, and in particular, for confronting the attendant social inequalities. We identified three possible reasons for these findings: 1) non-governmental organizations were caught off-guard by the outbreak, 2) there was no clearly articulated intervention agenda to inform practitioners of the roles they should play in such a large-scale crisis, and 3) having become more formalized and standardized, social work services may have become less flexible in responding to emerging community needs. We conclude this article by suggesting three directions that could allow the profession to better pursue its mission during large-scale crises.

Prevalence and Impact of Reported Drug Allergies among Rheumatology Patients.

BACKGROUND: Drug allergies (DA) are immunologically mediated adverse drug reactions and their manifestations depend on a variety of drug- and patient-specific factors. The dysregulated immune system underpinning rheumatological diseases may also lead to an increase in hypersensitivity reactions, including DA. The higher prevalence of reported DA, especially anti-microbials, also restricts the medication repertoire for these already immunocompromised patients. However, few studies have examined the prevalence and impact of reported DA in this group of patients. METHODS: Patients with a diagnosis of rheumatoid arthritis (RA), spondyloarthritis (SpA), or systemic lupus erythematosus (SLE) were recruited from the rheumatology clinics in a tertiary referral hospital between 2018 and 2019. Prevalence and clinical outcomes of reported DA among different rheumatological diseases were calculated and compared to a cohort of hospitalized non-rheumatology patients within the same period. RESULTS: A total of 6081 patients (2541 rheumatology patients: 1286 RA, 759 SpA, and 496 SLE; and 3540 controls) were included. DA was more frequently reported among rheumatology patients compared to controls (23.8% vs. 13.8%, p < 0.01). Antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs) were the two most commonly reported categories of DA with a prevalence of 12.0% and 5.1%, respectively. Reported antibiotics allergies were more frequent in patients with RA (OR = 1.20, 95% CI = 1.02-1.62, p = 0.03) and SLE (OR = 4.69, 95% CI = 3.69-5.95, p < 0.01); and associated with increased infection-related admissions among rheumatology patients (OR = 1.79, 95% CI = 1.09-2.95, p = 0.02). Among the subgroup of patients referred for allergy testing, 85.7% of beta-lactam antibiotic allergy labels were found to be inaccurate and de-labelled after negative drug provocation testing. CONCLUSION: The prevalence of reported DA was significantly higher in rheumatology patients. Reported antibiotic allergy was associated with increased rate of infection-related admissions. However, the rate of genuine antibiotic allergy was low. Further studies are needed to guide proper assessment of reported DA and impact of comprehensive allergy testing in this group of patients.

Determinants of Patterns of Need for Home and Community-Based Care Services Among Community-Dwelling Older People in Urban China: The Role of Living Arrangement and Filial Piety.

This study aims to identify older people's home- and community-based care (HCBC) service need patterns and explore the role of living arrangement and filial piety in affecting such patterns. A total of 556 older people were selected in Beijing, China. Latent class analysis and multinomial logistic regression were adopted to identify the service need patterns and the influencing factors. A three-class model of service need patterns was explored (high-needs group, moderate-needs group, and low-needs group). Living arrangement was related to HCBC service need patterns. Compared with the high-needs group, those living with at least two family members were more likely to express low needs or moderate needs. Living arrangement was a moderator for the effect of filial piety on HCBC needs. Greater recognition of the effects of living arrangement and filial piety should enrich the Andersen model and provide a robust stimulus for long-term care policy development and for service delivery and social work.

Risk of Hepatitis E among Persons Who Inject Drugs in Hong Kong: A Qualitative and Quantitative Serological Analysis.

Hepatitis E virus (HEV) is an important cause of hepatitis, which can be transmitted via the bloodborne route. However, risk of hepatitis E among persons who inject drugs (PWIDs) is poorly understood. This study aimed to elucidate whether PWIDs are at risk for hepatitis E. We performed HEV IgM, IgG and nucleic acid detection on a cohort of 91 PWIDs and 91 age- and sex-matched organ donors. Blood HEV IgG was measured using the WHO HEV antibody standard. The effects of age, gender and addictive injection use on HEV serostatus and concentration were assessed. HEV IgG seroprevalence was 42/91 (46.2%) in the PWID group and 20/91 (22%) in the donor group (odds ratio = 3.04 (1.59-5.79), p = 0.0006). The median HEV IgG concentration was 5.8 U/mL (IQR: 2.5-7.9) in the PWID group and 2.1 U/mL (IQR: 1.2-5.3) in the donor group (p = 0.005). Increasing age and addictive injection use were significantly associated with HEV IgG serostatus, but only addictive injection use was associated with HEV IgG concentration (p = 0.024). We conclude that PWIDs are at increased risk for hepatitis E and are prone to repeated HEV exposure and reinfection as indicated by higher HEV IgG concentrations.

Self-Perceptions of Aging and Control of Life in Late Adulthood: Between-Person and Within-Person Associations.

Objectives: This study aimed to examine the longitudinal relationship between two central concepts in aging research-self-perceptions of aging (SPA) and perceived control of life (COL). Method: The data came from three measurement points over a 9-year period in the Health and Retirement Study (HRS). A random intercepts cross-lagged panel model (RI-CLPM) was estimated. Results: The covariations between SPA and COL across 9 years were evident at both the between-person level and the within-person within-time level. The results revealed a reciprocal relationship between SPA and COL: Higher than usual negative SPA predicted within-person decreases in COL 4 years later, and lower than usual COL predicted future within-person increases in negative SPA. Furthermore, SPA were found to have a somewhat larger effect on COL than the corresponding influence of COL on SPA. Discussion: This study enriches the stereotype embodiment theory and the practice by documenting a reciprocal interrelationship between SPA and COL.

The Longitudinal Associations between Physical Health and Mental Health among Older Adults.

OBJECTIVES: This study examines the lead-lag relationship between physical and mental health among older adults. METHOD: Data are collected from 16,417 older adults aged 50 years and older participating in the biannual Health and Retirement Study (HRS). Participants were assessed on up to 11 measurement points over a 21-year period from 1994 to 2014. Physical health was measured as a composite of chronic diseases, functional limitations, and difficulties in basic and instrumental activities of daily living. Mental health was measured with the modified CES-D. Bivariate latent change score models (BLCSM) were estimated. RESULTS: Both physical and mental health declined in the observed years, with slower declining rates over time. A reciprocal relationship emerged, with the prior level of physical health acting as the leading indicator of subsequent change in mental health, and the prior mental health state acting as the leading indicator of subsequent changes in physical health. Additionally, the influence of physical health on mental health changes was larger than the corresponding effect of mental health on subsequent physical health. CONCLUSION: This study demonstrates the reciprocal relationship between physical and mental health in later adulthood and highlights the need to pay attention to the mental health of older people with physical health problems.

An exploration of older Hong Kong residents' willingness to make copayments toward vouchers for community care.

Because of its rapidly aging population, Hong Kong faces great challenges in the provision and financing of long-term care (LTC) and needs to explore sustainable funding mechanisms. However, there is a paucity of research on older people's willingness to pay (WTP) for LTC services in Hong Kong. This study utilizes data collected in Hong Kong in 2011 (N = 536) to investigate older people's receptivity to this financing mode by assessing their co-payments for a community care service voucher scheme and then testing how potential factors affect respondents' amount of co-payment. Results show that respondents' WTP was positively associated with family financial support, financial condition, and positive attitudes toward this novel policy and negatively associated with family caregiving support. Direct and moderating effects of family financial support on WTP were found. The policy-related implications of LTC financing to improve older people's acceptance of co-payment mechanisms, financial condition, and shared responsibility of care are discussed.

Factors associated with older people's long-term care needs: a case study adopting the expanded version of the Anderson Model in China.

BACKGROUND: Alongside changes in society and the economy, the family's function of taking care of older people is weakening and the formal care mode is becoming more accepted. Older Chinese people are facing diverse choices of long-term care (LTC) modes. Acknowledging this situation, to optimize older people's arrangements for LTC services and improve quality of later life, this study sets out to explore and make theoretical sense of older people's LTC needs and to identify the factors influencing their LTC needs. METHODS: Questionnaire data were collected from 1090 participants in four Chinese cities in 2014. A conceptual framework was established based on the Anderson Model (i.e., predisposing factors, enabling factors, and need factors), and further strengthened by adding several psychosocial factors (i.e. intergenerational relationships, unmet care service needs, and self-image). Multinomial logistic regression was adopted to explore the influencing factors of LTC needs. Participants choosing home-and-community-based care were regarded as the reference group. RESULTS: After controlling for predisposing, enabling, and need factors, those with better self-image (OR = 1.027, p = 0.021) and fewer unmet care service needs (OR = 0.936, p = 0.009) were identified as being more likely to choose family care; those with less close intergenerational relationships (OR = 0.676, p = 0.019), fewer unmet care service needs (OR = 0.912, p = 0.027), and better self-image (OR = 1.044, p = 0.026) were more likely to choose institutional care. Gender- and age-related differences in the determinants of LTC needs were observed. CONCLUSIONS: The findings of this study suggest that professionals and service providers should pay more attention to the important role of psychosocial factors in affecting older people's LTC needs and be more sensitive to gender- and age-related differences. Effective efforts to improve intergenerational relationships, to further develop care services for older people, and to foster a more positive image of aging should be emphasized.

An alternative discourse of productive aging: A self-restrained approach in older Chinese people in Hong Kong.

While Western discourses regarding productive aging emphasize individuals' contributions to economic productivity, the Confucian cultural heritage of the Chinese community may provide an alternative perspective. This qualitative study explores interpretations of what constitutes productive aging, based on a series of in-depth interviews with older Chinese people in Hong Kong. It shows that some of these individuals adopted a passive and indirect interpretation of productive aging, distinct from that found in Western countries. The Confucianism-based, collectivist, normative order underpinning Hong Kong society disposed these older people to adopting a self-restrained attitude with the aim of avoiding becoming a burden to others, especially family members. Such a tendency toward self-restraint or avoidance also encompassed a compromise between ideals and reality, with the older people opting to compromise their expectations of the younger generation as a whole, their adult children in particular, in terms of respect and reciprocity.

Motivations of older Chinese adult learners in Hong Kong.

BACKGROUND: Motivation for learning, as an important aspect pertaining to studying the phenomenon of elder learning, is not fully explored in Hong Kong. OBJECTIVE: This study was designed to create a measurement to investigate the possible diversity of motivations of elder learners, so as to harness the older people's potential in learning and thus capitalize on productive ageing. METHODS: 283 older learners participating in learning activities at elder centres were interviewed. Exploratory factor analysis was conducted to identify the latent factors in the learning motivation scale. Reliability of the scale was assessed. ANOVA testing was used to assess for differences in learning motivation by different socio-demographic variables. RESULTS: Four dimensions of older Chinese adults' motivations for engaging in learning have been found: 'keeping up with and contributing to society', 'fulfilment', 'social integration' and 'reemployment'. Elders with higher education levels were more likely to seek out opportunities for lifelong learning. Younger (aged 55 to 64) participants of learning activities were more likely than their older (aged 75 or above) counterparts to learn for fulfillment. Older adults who had volunteer experience were more motivated to engage in learning through keeping up with and contributing to society. CONCLUSION: Older learners in Hong Kong participated in learning for self-fulfilment and development, contributing to society, maintaining social connection, and acquisition of knowledge and qualifications for possible (re)employment. Some of their socio-demographic features might influence their motivations. Learning programmes could be designed and improved based on older adults' motivations to meet their needs.

Long-term care policy in Hong Kong: challenges and future directions.

In comparison to residential care services, home and community care services in Hong Kong remain underfunded and underdeveloped. The government's long-term care policies have resulted in an overreliance on subsidized long-term care services in the form of institutional care services. The quality of services offered by private residential care facilities is a cause for concern. Population aging, evolving family structures, and changes in residential living patterns are expected to continue to put a strain on resources for services for the elderly in the near future. This article provides an overview of the many issues surrounding long-term care in Hong Kong and offers potential directions for the future development of long-term care services.

Association between cultural factors and the caregiving burden for Chinese spousal caregivers of frail elderly in Hong Kong.

OBJECTIVES: The aim of this study was to explore the relationship between cultural factors and the caregiving burden of Chinese spousal caregivers who provided care to their frail partners. METHOD: A sample consisting of 102 Chinese caregivers for frail elderly spouses was recruited from home care services across various districts in Hong Kong. Structured interviews were conducted with the participants in their homes, measuring demographics, the functional status of the spouse, the degree of assistance required in daily care, perceived health, the caregiver's orientation to traditional Chinese family values, social support, coping, and caregiver burden. RESULTS: Findings of regression analysis indicated that gender, activities of daily living (ADL) status, orientation to traditional Chinese family values, passive coping, and marital satisfaction associated with caregiver burden. Being female, having lower functioning in ADL or a strong orientation toward traditional Chinese family values, employing the strategies of passive coping more frequent, or experiencing a low degree of marital satisfaction were associated with high levels of caregiver burden. CONCLUSION: These findings provided a basis for developing appropriate interventions to minimize the caregiver burden of spousal family caregivers.