Selected psychological predictors of medication adherence in the older adults with chronic diseases

Development and evaluation of hot-melt-extruded diquafosol tetrasodium formulations for ophthalmic inserts: A design of experiments approach

This study aimed to develop, optimize, and evaluate hot-melt-extruded ophthalmic inserts capable of sustained release of diquafosol tetrasodium (DQS) via a design of experiments approach. DQS, a tear stimulant for dry eye management, faces challenges of frequent administration and low bioavailability. The developed insert uses biodegradable polymers in varied proportions to achieve sustained release. Optimized through mixture design, the insert completely dissolved within 24 h and maintained a stable drug content, thickness, and surface pH over three months at room temperature. In vitro corneal permeation studies on excised rabbit corneas demonstrated increased bioavailability, suggesting a reduced dosing frequency compared with conventional eye drops. Therefore, this insert has potential to enhance treatment outcomes by improving patient compliance and providing sustained drug effects.

Improving ocular bioavailability of hydrophilic drugs through dynamic covalent complexation

The clinical benefits of diquafosol tetrasodium (DQS), a hydrophilic P2Y2 receptor agonist for dry eye, have been hindered by a demanding dosing regimen. Nevertheless, it is challenging to achieve sustained release of DQS with conventional drug delivery vehicles which are mainly designed for hydrophobic small molecule drugs. To address this, we developed an affinity hydrogel for DQS by taking advantage of borate-mediated dynamic covalent complexation between DQS and hydroxypropyl guar. The resultant formulation (3% DQS Gel) was characterized by sustained release, low corneal permeation, and extended ocular retention, which were desirable attributes for ocular surface drug delivery. Both in vitro and in vivo studies had been carried out to verify the biocompatibility of 3% DQS Gel. Using corneal fluorescein staining, the Schirmer's test, PAS staining, quantitative PCR and immunohistological analyses as outcome measures, the superior therapeutic effects of 3% DQS Gel over PBS, the hydrogel vehicle and free DQS were demonstrated in a mouse dry eye model. Our DQS delivery strategy reported herein is readily applicable to other hydrophilic small molecule drugs with cis-diol moieties, thus providing a general solution to improve clinical outcomes of numerous diseases.

Psychological flexibility in older adulthood: a scoping review

OBJECTIVES

Psychological flexibility/inflexibility (PF/PI) is a core component of the acceptance and commitment therapy (ACT) model, which is gaining more attention in the geropsychological literature. This scoping review examines the size and scope of the research on PF/PI in older adulthood related to age differences between older adult and younger samples, correlates relevant to psychological health, and changes with ACT.

METHODS

A systematic literature search was conducted using PubMed, CINAHL, and PsycINFO. Peer-reviewed articles available in English were included that: had a mean age ≥65 and a minimum age ≥60; and reported self-report measures of PF/PI. We categorized PF/PI into three domains: open, aware, and engaged.

RESULTS

Forty-six articles were included. Most studies measured open or aware domains; few measured the engaged domain. Older adults evidenced greater awareness compared to younger adults (9 of 13 analyses were significant). Openness and awareness consistently yielded medium to large correlations with anxiety and depression. PF/PI did not relate with positive affect and inconsistently correlated with quality of life measures.

CONCLUSION

Despite emerging trends, variability and limitations were evident in the literature. Specifically, measurement issues, lack of conceptual clarity, and the omission of values and behavioral measures require future attention.

Applying Stress and Coping Theory to Understand Diuretic Adherence Experiences in Persons with Heart Failure

Despite the benefits of diuretics for treating the symptoms of heart failure (HF), patients may report side effects and intentionally not adhere to diuretic regimens. Positive internal motivators, such as positive emotions, may benefit individuals in their adaptation to medication-related stress. However, there has been limited study of these potential motivators in those with HF. Using a descriptive qualitative approach, 82 adults taking diuretics for HF were interviewed. This study applied stress and coping theory to understand the diuretic-taking experiences of patients with HF. Data analysis revealed three themes: (a) diuretics are bothersome, (b) staying positive in the mid of hardship, and (c) adapting to endure. Findings suggest that adherent participants stayed positive amid the perceived hardship, maintaining resilient and grateful attitudes. Adherent participants adapted to bothersome diuretic effects and utilized creative strategies. More research is needed to understand the relationships between resilience, adaptive coping, and diuretic adherence.

The Relationship Between COVID-19 Related Stress and Medication Adherence Among High-Risk Adults During the Acceleration Phase of the US Outbreak

PURPOSE

To assess the relationship between stress regarding COVID-19 and medication adherence.

PATIENTS AND METHODS

Older adults with ≥1 chronic condition(s) were recruited from 4 active, federally funded studies in Chicago to participate in a longitudinal telephone survey. Participants self-reported stress regarding COVID-19 in the last week. Adherence was measured via the ASK-12 survey.

RESULTS

Most participants reported feeling stressed "some of the time" (54.0%), while 18.2% felt stressed "most" or "all of the time" and 27.8% "never" felt stressed. In bivariate analyses, participants who reported being stressed "most" or "all of the time" had worse medication adherence than participants who reported being stressed "some of the time" or "never" (p < 0.001). In multivariable analyses, participants who reported feeling stressed "most" or "all of the time" had worse adherence than those who "never" felt stressed (Adjusted Least Square Mean (Standard Error): 21.3 (0.6) vs 19.7 (0.6), p=0.01).

CONCLUSION

Stress due to COVID-19 has significantly impacted medication adherence, which has negative implications for the course of both COVID-19 and comorbid conditions. Healthcare providers should be aware of the potential impact of COVID-19 on patients' mental and physical well-being and consider ways to routinely assess patient experiences.