Xiaoyue Liu

Abstract

Background: Diet and nutrition management is an integral component of Crohn disease (CD) management. This type of management is highly variable and individualized and, thus, requires personalized approaches. Consumer health information technology (CHIT) designed to support CD management has typically supported this task as everyday life work and, not necessarily, as illness work. Moreover, CHIT has rarely supported the ways in which diet and nutrition management requires coordination between multiple forms of patient work. Objective: The purpose of this study was to investigate diet and nutrition management as biform work, identify components of articulation work, and provide guidance on how to design CHIT to support this work. Methods: We performed a qualitative study in which we recruited participants from CD-related Facebook pages and groups. Results: Semistructured interviews with 21 individuals showed that diet and nutrition management strategies were highly individualized and variable. Four themes emerged from the data, emphasizing the interactions of diet and nutrition with physical, emotional, information, and technology-enabled management. Conclusions: This study shows that the extent to which diet and nutrition management is biform work fluctuates over time and that articulation work can be continuous and unplanned. The design guidance specifies the need for patient-facing technologies to support interactions among diet and nutrition and other management activities such as medication intake, stress reduction, and information seeking, as well as to respond to the ways in which diet and nutrition management needs change over time.

Abstract

This study aimed to assess the overall level of sleep quality among female staff nurses in the United States during the early COVID-19 pandemic. It also aimed to examine factors associated with sleep quality and its seven subcomponents: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbance, use of sleeping medications, and daytime dysfunction. A descriptive, correlational, and cross-sectional study design was used. We performed descriptive, and regression analyses with a sample of 215 female staff nurses enrolled in post-licensure online nursing programs at a southeastern state university. Data collection was conducted using an online survey from April to May 2020. Sleep quality was measured using the Pittsburgh Sleep Quality Index (PSQI). Nurses working part time (p = 0.02), with lower perceived physical health (p = 0.01), a lower self-care self-regulation score (p < 0.001), and higher work stress (p < 0.05) showed poorer sleep quality. Factors associated with subcomponents of sleep quality varied. Poor sleep quality among nurses during the COVID-19 pandemic was reported. Various factors, including work environmental factors were associated with the sleep quality in this sample. Hospital administrators should consider developing intervention programs for improving the work environment, which would impact sleep quality, health status, and job performance.

Abstract

Background: Arterial stiffness and increased blood pressure variability (BPV) are important subclinical cardiovascular diseases (CVDs). Evidence is accumulating that poor sleep is associated with subclinical CVDs. The purpose of our study was to investigate how sleep was related to arterial stiffness and BPV. We also explored whether sleep moderated the association between arterial stiffness and BPV. Methods: We conducted a cross-sectional study including 78 healthy adults aged between 35 and 64 years. Variables of interest were: 1) objective seep characteristics, assessed with a wrist actigraphy for two consecutive nights; 2) arterial stiffness, measured by carotid-femoral pulse wave velocity (cfPWV); and 3) BPV, measured using an ambulatory blood pressure monitor over 24 h and estimated by average real variability. Results: Lower sleep efficiency was an independent predictor of higher cfPWV and higher systolic BPV, while longer wake after sleep onset (WASO) was an independent predictor of higher cfPWV only. In addition, cfPWV showed a positive relationship with systolic BPV, and this relationship was moderated by sleep efficiency and WASO, respectively. The relationship between cfPWV and systolic BPV became stronger among individuals who had a level of sleep efficiency lower than 84% and who had WASO higher than 67 min, respectively. Conclusion: Our study showed that poor sleep not only directly linked with arterial stiffness and BPV but also moderated the relationship between these two subclinical CVDs. These findings suggest that improving sleep quality could be a target intervention to promote cardiovascular health in clinical practice.

Abstract

Visit-to-visit blood pressure (BP) variability (BPV) is an independent risk factor of cardiovascular disease (CVD). Sleep architecture characterizes the distribution of different stages of sleep and may be important in CVD development. We examined the association between visit-to-visit BPV and sleep architecture using in-lab polysomnographic data from 3,565 patients referred to an academic sleep center. BPV was calculated using the intra-individual coefficient of variation of BP measures collected 12 months before the sleep study. We conducted multiple linear regression analyses to assess the association of systolic and diastolic BPV with sleep architecture—rapid eye movement (REM) and non-rapid eye movement (NREM) sleep duration. Our results show that systolic BPV was inversely associated with REM sleep duration (p =.058). When patients were divided into tertile groups based on their BPV, those in the third tertile (highest variability) spent 2.7 fewer minutes in REM sleep than those in the first tertile (lowest variability, p =.032), after adjusting for covariates. We did not find an association of systolic BPV with other measures of sleep architecture. Diastolic BPV was not associated with sleep architecture either. In summary, our study showed that greater systolic BPV was associated with lower REM sleep duration. Future investigation is warranted to clarify the directionality, mechanism, and therapeutic implications.

Abstract

This study aimed to investigate the effect of acute psychological stress on autonomic function and arterial stiffness, and to test a mediating role of changes in autonomic function between acute stress and arterial stiffness. Eighty-five healthy female adults were randomized into either an experimental or control group. The Trier Social Stress Test (TSST) was used to induce acute psychological stress. Autonomic function (measured by pre-ejection period [PEP] from cardiac impedance and high frequency [HF] of heart rate variability [HRV]) and arterial stiffness (measured by carotid and femoral pulse wave velocity [cfPWV] and augmentation index [AIx]) were assessed before and after the TSST. The mean age of the participants was 28.78 (±9.84) years old. Experimental group participants had a significant increase in cfPWV (p =.025) and AIx (p =.017) following the stressor, compared with those in the control group, after controlling for age, body mass index, and systolic blood pressure. However, no significant group differences were observed in changes in PEP (p =.181) and HF (p =.058). Changes in PEP and HF were neither associated with changes in cfPWV (p =.975 and p =.654, respectively), nor in AIx (p =.376 and p =.323, respectively). The results suggest that even a brief period of mild to moderate stress, which does not cause sustainable changes in autonomic function, may still exert significant adverse effects on arterial stiffness. The changes in arterial stiffness were not related to changes in autonomic function. Future experimental studies with several measurement points are recommended to identify distinct effects of stress on autonomic function and arterial stiffness.

Abstract

Background Cardiovascular disease (CVD) and intimate partner violence (IPV) are 2 major chronic problems that prevalently affect women's health and quality of life in the United States. However, whether female IPV survivors are at risk for developing adverse cardiovascular outcomes has not been clearly understood. Objective This integrative review was conducted to bridge the literature gap by examining cardiovascular health in female adults with a history of IPV experience. Methods Three electronic databases including PubMed, CINAHL, and Web of Science were used to search for studies published between 1998 and 2019. The search process followed the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. Results Of the 229 records retrieved from the literature, 19 met the criteria for review. All included studies were quantitative research. Although the overall findings showed a mixed relationship between IPV and CVD, women who experienced abuse were more likely to engage in unhealthy behaviors, have higher levels of CVD biomarkers, experience cardiovascular symptoms, and exhibit long-term cardiovascular complications when compared with nonabused women. Conclusions Intimate partner violence is a stressor that directly and indirectly influences women's cardiovascular health. Therefore, it is essential for healthcare providers to routinely screen IPV status in clinical practice. Targeted interventions, such as assessing women's coping strategies and evaluating their cardiovascular health using a total risk factor approach, are recommended to prevent or reduce the deleterious effects of violence on this large, vulnerable group of women.

Abstract

Background: Home health care nurses (HHNs) work alone in patients’ homes. They experience high rates of Type II (client/patient-on-worker) workplace violence (WPV); however, little is known about the extent and factors of their reporting. Methods: A convenience sample of employees aged 18 years and older and working as an HHN or management staff were recruited from a U.S. nonprofit home health care agency. To describe the extent of reporting of WPV events, an HHN survey was conducted. To identify the barriers and facilitators to reporting, two HHN focus groups were conducted, and management key informant interviews were employed. Findings: We recruited 18 HHNs and five management staff into the study. Almost all HHNs reported to management the most serious forms of violence they experienced, and that HHNs reported WPV when they perceived that reporting was beneficial (alerting other nurses and management) and supported by management staff. However, they were unwilling to report when it was perceived as disadvantageous (reliving the trauma), discouraged (by a norm that experiencing violence is a part of the job), unachievable (unstandardized reporting process), and ambiguous (uncertain of what is reportable). Management staff perceived a lack of standardized reporting processes as a barrier when responding to HHNs’ reporting. Conclusion/Application to Practice: High reporting was related to strong support from management. Policies and procedures should clearly define WPV, the threshold for reporting, how to report, and how management will respond to the reports.

Abstract

This integrative review uses an ecological framework to examine research describing multilevel contributors to health inequities among Latina childbearing women in rural U.S. communities. Rurality exacerbates existing structural issues and makes the accumulation of both social capital and cultural competence in accessing and utilizing the health care system difficult. Four electronic databases were searched—Ovid/Medline, Web of Science, Google Scholar, and CINAHL—over the period of 2006 to 2018. Twenty-nine full-text articles met inclusion criteria. Findings were that a convoluted immigration policy, health care delivery and payment systems, geographic and economic barriers, discrimination, gender roles, and reproductive coercion all contribute to decreased utilization of health care, which in turn contributes to health inequities. More attention is required to situate Latina health inequities in rural communities within the context of other health-relevant aspects of discrimination and reproductive coercion, and to understand the contribution that the health care system itself has on these health inequities. Use of the ecological framework for this integrative review integrates well with inclusive vulnerable population research approaches such as community-based participatory research, because of its multilevel focus.

Abstract

Endometrial cancer, the most common gynecologic malignancy, is a hormonally-regulated tumor. Response to progestin-based therapy correlates positively with progesterone receptor (PR) expression. However, many endometrial tumors have low levels or loss of PR, limiting the clinical application of progestin. We evaluated the ability of epigenetic modulators to restore functional PR expression in Type I endometrial cancer cells with low basal PR. Treatment with the histone deacetylase inhibitor (HDACi) LBH589 induced a profound upregulation of PR mRNA. LBH589 restored PR protein expression at 24 hours and sustained expression for 72 hours, even in the presence of progesterone. LBH589 promoted a dose-dependent increase in PR protein levels, with an obvious increase with 10 nM LBH589. To investigate if the restored PR is functional as a transcription factor, we examined PR nuclear localization and expression of PRE- or Sp1-containing target genes. After treatment with LBH589 in the absence or presence of progesterone, PR nuclear expression was increased as demonstrated by Western blotting of nuclear fractions and immunostaining. Next, restored PR upregulated FoxO1, p21, and p27 and downregulated cyclin D1 in a ligand-dependent manner. Finally, LBH589 treatment induced cell cycle arrest in G1 that was further augmented by progesterone. Regulation of PR target genes was also achieved with other HDAC inhibitors, indicating that agents in this class work similarly with respect to PR. Our findings reveal that epigenetic modulators can restore endogenous functional PR expression in endometrial cancer cells and suggest that strategies to re-establish PR expression will resensitize endometrial tumors to progestin therapy.

Abstract

Progesterone, acting through its receptor, PR (progesterone receptor), is the natural inhibitor of uterine endometrial carcinogenesis by inducing differentiation. PR is downregulated in more advanced cases of endometrial cancer, thereby limiting the effectiveness of hormonal therapy. Our objective was to understand and reverse the mechanisms underlying loss of PR expression in order to improve therapeutic outcomes. Using endometrial cancer cell lines and data from The Cancer Genome Atlas, our findings demonstrate that PR expression is downregulated at four distinct levels. In well-differentiated cancers, ligand-induced receptor activation and downregulation are intact. miRNAs mediate fine tuning of PR levels. As differentiation is lost, PR silencing is primarily at the epigenetic level. Initially, recruitment of the polycomb repressor complex 2 to the PR promoter suppresses transcription. Subsequently, DNA methylation prevents PR expression. Appropriate epigenetic modulators reverse these mechanisms. These data provide a rationale for combining epigenetic modulators with progestins as a therapeutic strategy for endometrial cancer.