Sex-dependent Remodeling of Right-Ventricular Function in a Rat Model of Pulmonary Arterial Hypertension.

Right-ventricular (RV) function is an important prognostic indicator for pulmonary arterial hypertension (PAH), a vasculopathy that primarily and disproportionally affects women with distinct pre- and post-menopausal clinical outcomes. However, most animal studies have overlooked the impact of sex and ovarian hormones on RV remodeling in PAH. Here, we combined invasive measurements of RV hemodynamics and morphology with computational models of RV biomechanics in sugen-hypoxia (SuHx) treated male, ovary-intact female, and ovariectomized female rats. Despite similar pressure overload levels, SuHx induced increases in end-diastolic elastance and passive myocardial stiffening, notably in male SuHx animals, corresponding to elevated diastolic intracellular calcium. Increases in end-systolic chamber elastance were largely explained by myocardial hypertrophy in male and ovary-intact female rats, whereas ovariectomized females exhibited contractility recruitment via calcium transient augmentation. Ovary-intact female rats primarily responded with hypertrophy, showing fewer myocardial mechanical alterations and less stiffening. These findings highlight sex-related RV remodeling differences in rats, affecting systolic and diastolic RV function in PAH.

Insights From a Community-Based Strategy to Assess Tobacco and Vape Shop Retailers' Implementation of Tobacco 21 Law in El Paso, Texas.

In 2019, the United States Congress passed Tobacco 21 (T21) legislation that raised the minimum legal sales age for tobacco products from 18 to 21. However, although the federal legislation superseded weaker state laws that were already in place in some states, including Texas, local guidance for retailers was inconsistent. Given that retailers are ultimately responsible for policy implementation, the American Heart Association (AHA) initiated a process of assessing retailers knowledge and perceptions of the law through a survey targeting all tobacco retailers and accompanying ethnography of a subset of vape shops in El Paso, Texas. The process yielded lessons learned for assessment of community-based policy implementation including key considerations for personnel and process that are applicable to other community-based assessment processes. While AHA considered an in-person approach ideal, having an alternate online response option was necessary. In addition, a focused approach and in-depth understanding of the purpose was key to responsiveness of the retailers.

The Development of a Systems-Level Approach to Address Adolescent Access to Health Care: A Novel Confidentiality Policy Intervention.

Most evidence-based interventions in adolescent sexual and reproductive health and mental health remain largely aimed at individual-level outcomes and do not conceptualize adolescent health within a social-ecological model. Interventions to affect policy, systems, and environmental change offer potential for sustained population impact. The current initiative used an innovation framework to develop a novel systems-level approach to address adolescent access to health care. The Framework for Public Health Innovation provided an approach to develop a novel intervention. Confident Teen is a systems-level intervention that creates the opportunity, through organizational policy change, to increase adolescents' access to confidential sexual and reproductive health services through organizational policies. Gaps in adolescents' access to health care services allowed for a systems-level approach to be designed through an adolescent pregnancy prevention innovation initiative. Confidentiality is a right and critical component to their health care; therefore, a policy and conversation between provider and patient is a prioritized component of the novel intervention.

Addressing Evaluation Barriers with Early Innovation Development for Adolescent-Focused Sexual and Reproductive Health Interventions.

Most evidence-based teen pregnancy prevention programs focus on individual-level sexual health outcomes (e.g., STIs, pregnancy, teen births). To expand program and intervention approaches within teen pregnancy prevention (TPP), the Department of Health and Human Services funded two grantees, Innovative Teen Pregnancy Prevention Programs (iTP3) and Innovation Next (IN) to support and enable early innovation to advance adolescent health and prevent teen pregnancy. The pipeline to support and enable innovation in adolescent health is complex, resulting in barriers and challenges to research and evaluation of novel programs. This paper presents some of the barriers encountered by the grantees. Data for this paper was collected from key personnel and secondary data sources. Focus group participants included seven representatives (n = 7) across the two organizations. Focus group questions assessed barriers related to innovative intervention development and evaluation. Key findings include four barriers to evaluation when fostering innovative adolescent-focused pregnancy prevention interventions. These included (a) funding constraints on evaluation activities, (b) innovation readiness for rigorous testing, (c) evaluation knowledge and expertise on innovation-development teams, and (d) challenges with evaluation requirements. Novel and promising system- and technology-focused interventions with the potential to impact TPP require alternative tools and approaches for evaluation. This would allow research to focus on how systems-level change mechanisms (i.e., policy, access to care) impact sexual risk behaviors and better understand ecological and social determinants of health for the priority population. The advancement of approaches to impact adolescent health identifies the need to expand the focus of evidence-based interventions beyond the adolescent themselves and understand approaches that impact external contexts and environments related to reducing sexual and reproductive health (SRH) risk-taking.

Assessment of Action Plans as a Guide for Equity-Focused Coalition Work.

Collaborative capacity within coalitions is required to promote healthy communities and create systemic change. The purpose of this study was to evaluate the quality of three Tobacco Prevention and Control Coalitions' action plans for their likely ability to address health equity through tobacco cessation efforts. To do this, the Butterfoss State Plan Index was adapted for relevance to community-oriented coalitions, with a focus on health disparities and tobacco control. This study compares three tobacco control coalitions in Texas to quantify their efforts on addressing health disparities through a standardized measurement process. The results of this assessment indicate that there are gaps in existing coalition assessment tools, and action plan norms and requirements, specifically as it pertains to addressing health disparities in a systematic way. Through a systematic analysis of coalition action plans and supporting documents, it is clear that there is a need for more standard inclusion of disparities-focused work within action plans. Community health researchers, coalition members, and coalition funders should consider action plans to be living, iterative documents that are subject to adjustments. Systems-thinking perspective should be used to develop action plans adapted to environmental, community, policy, and other changes. Lessons learned from this study can provide an example of how to incorporate strategies for reducing health disparities within coalition action planning.

Implementation evaluation of a collective impact initiative to promote adolescent health in Oklahoma County, USA.

BACKGROUND: The teenage birth rate in the USA has considerably decreased in recent decades; however, more innovative, collaborative approaches are needed to promote adolescent health and prevent teenage pregnancy at the community level. Despite literature on the promising results of the collective impact (CI) model for health promotion, there is limited literature on the model's ability to reduce teenage pregnancies in a community. The Central Oklahoma Teen Pregnancy Prevention Collaboration is applying the CI model to foster collaboration among multiple stakeholders with the goal of increasing community and organizational capacity to improve adolescent health outcomes. This paper reports the findings from the initiative's implementation evaluation, which sought to understand whether the CI model improved collaboration among organizations and understand barriers and facilitators that affected program delivery. METHODS: Program implementers and evaluators jointly developed research questions to guide the intervention and evaluation design. The Consolidated Framework for Implementation Research (CFIR) was used to assess program components including the intervention characteristics, organization setting, community setting, facilitator characteristics, and the process of implementation. Primary sources of data included performance measures, meeting observations (n = 11), and semi-structured interviews (n = 10). The data was thematically analyzed using CFIR constructs, community capacity domains, and the five constructs of CI. RESULTS: Key findings include the need for shortened meeting times for meaningful engagement, opportunities for organizations to take on more active roles in the Collaboration, and enhanced community context expertise (i.e., those with lived experience) in all Collaboration initiatives. We identified additional elements to the core constructs of CI that are necessary for successful implementation: distinct role identification for partner organizations and incorporation of equity and inclusivity into collaboration processes and procedures. CONCLUSIONS: Results from this implementation evaluation provide valuable insights into implementation fidelity, participant experience, and implementation reach of an innovative, systems-level program. Findings demonstrate the context and requirements needed to successfully implement this innovative program approach and CI overall. Additional core elements for CI are identified and contribute to the growing body of literature on successful CI initiatives.

Delivering Tobacco Cessation Through Community Health Workers: Curriculum and Training Considerations.

Texas faces unique barriers in health status and risk behaviors such as smoking. To address tobacco use, community health workers (CHWs) are a resource for disseminating education among a population. To promote smoking cessation in Texas, there is a need for the development of a smoking cessation training program for CHWs. The National Community Health Worker Training Center used an approach with CHWs to develop a curriculum. From the curriculum development and with feedback from CHWs, 4 training courses were produced: online and in person, and in English and Spanish. The curriculum meets a need that disseminates smoking cessation strategies through peer-led, culturally relevant messages.

Qualitative Analysis of Partnerships' Effect on Implementation of a Nationally Led Community-Based Initiative.

INTRODUCTION: The American Heart Association (AHA) was funded to implement a nationally led initiative to implement policy, systems, and environment (PSE) interventions in communities across the United States. In Cohort 1, 15 communities were tasked with working with local community partners to plan and implement initiatives. METHOD: Engaged as the evaluators, Texas A&M researchers conducted telephone interviews with project managers (employed by AHA) and community partners representing the 15 communities. Interviewees were asked questions pertaining to partnership planning and involvement in initiatives and overall perceptions of the impact of the program. Interviews were analyzed qualitatively using the Consolidated Framework for Implementation Research as the guiding framework. RESULTS: Thematic analysis revealed that partners were used in planning and implementing initiatives and felt that initiatives were successful in building community engagement. Some noted success in PSE changes, although this was not a major focus of respondents, regardless of it being a main indicator for the funder. DISCUSSION: Themes reveal several recommendations for those embarking on community-level work. Those recommendations include (1) build on existing priorities, (2) focus on incremental steps that build toward the bigger goal, (3) use national organizations to move more quickly, and (4) leverage resources through collaborative efforts.

Functional interfaces for biomimetic energy harvesting: CNTs-DNA matrix for enzyme assembly.

The development of 3D structures exploring the properties of nano-materials and biological molecules has been shown through the years as an effective path forward for the design of advanced bio-nano architectures for enzymatic fuel cells, photo-bio energy harvesting devices, nano-biosensors and bio-actuators and other bio-nano-interfacial architectures. In this study we demonstrate a scaffold design utilizing carbon nanotubes, deoxyribose nucleic acid (DNA) and a specific DNA binding transcription factor that allows for directed immobilization of a single enzyme. Functionalized carbon nanotubes were covalently bonded to a diazonium salt modified gold surface through carbodiimide chemistry creating a brush-type nanotube alignment. The aligned nanotubes created a highly ordered structure with high surface area that allowed for the attachment of a protein assembly through a designed DNA scaffold. The enzyme immobilization was controlled by a zinc finger (ZNF) protein domain that binds to a specific dsDNA sequence. ZNF 268 was genetically fused to the small laccase (SLAC) from Streptomyces coelicolor, an enzyme belonging to the family of multi-copper oxidases, and used to demonstrate the applicability of the developed approach. Analytical techniques such as X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and enzymatic activity analysis, allowed characterization at each stage of development of the bio-nano architecture. This article is part of a Special Issue entitled Biodesign for Bioenergetics--the design and engineering of electronic transfer cofactors, proteins and protein networks, edited by Ronald L. Koder and J.L. Ross Anderson.

Evaluation of Community-Based Policy, Systems, and Environment Interventions Targeting the Vending Machines.

The American Heart Association conducted policy, systems, and environmental (PSE) focused interventions to increase healthy vending in 8 communities. PSE interventions were assessed using the Nutrition Environment Measures Survey Vending Assessment to see changes in the food environment. Baseline and follow-up assessments were conducted with 3 settings and a total of 19 machines. PSE changes resulted in increased availability of healthy options and decreased unhealthy options. Implementation of PSE interventions targeting the food environment can be an effective method of providing increased access to healthy foods and beverages with the goal of increasing consumption to decrease chronic diseases.

Designed protein aggregates entrapping carbon nanotubes for bioelectrochemical oxygen reduction.

The engineering of robust protein/nanomaterial interfaces is critical in the development of bioelectrocatalytic systems. We have used computational protein design to identify two amino acid mutations in the small laccase protein (SLAC) from Streptomyces coelicolor to introduce new inter-protein disulfide bonds. The new dimeric interface introduced by these disulfide bonds in combination with the natural trimeric structure drive the self-assembly of SLAC into functional aggregates. The mutations had a minimal effect on kinetic parameters, and the enzymatic assemblies exhibited an increased resistance to irreversible thermal denaturation. The SLAC assemblies were combined with single-walled carbon nanotubes (SWNTs), and explored for use in oxygen reduction electrodes. The incorporation of SWNTs into the SLAC aggregates enabled operation at an elevated temperature and reduced the reaction overpotential. A current density of 1.1 mA/cm(2) at 0 V versus Ag/AgCl was achieved in an air-breathing cathode system. Biotechnol. Bioeng. 2016;113: 2321-2327. © 2016 Wiley Periodicals, Inc.

Evaluation of a multi-site health services psychology training program for telehealth and integrated behavioral health.

Introduction: Training future providers in telehealth and integrated care models can improve access and outcomes, especially among rural and underserved populations. The (blinded) project implemented behavioral health training for health service psychology doctoral students with three partner organizations. Trainees received both experiential and didactic training in telehealth and integrated behavioral health. Telehealth was utilized for remote warm hand-offs, hybrid shared appointments, therapy sessions, coordination with providers, and supervision. Program elements included opportunities for consultations with experts in other disciplines, supportive mentorship, exposure to various parts of a healthcare system, and interactions with diverse clients. Methods: The (blinded) training program evaluated trainee outcomes using fourteen interviews and three focus groups. Interviews and focus groups examined aspects of the program that contributed to trainees' knowledge, skills, and attitudes. Results: Evaluation results revealed increased levels of trainee confidence, autonomy and independence. Training reportedly enabled improved ability to collaborate and communicate with other professions, increased flexibility and adaptability, and openness to others' ideas. Trainees reported the program's use of telehealth enhanced awareness of their own skills and team members' perspectives of technology in care delivery. Discussion: Descriptions of the three care models, lessons learned, and qualitative results about trainee outcomes can be translated into best practices for workforce development and enhance psychology trainees' self-awareness and ability to incorporate others' viewpoints about technology and treatment approaches into healthcare.

A computational study of right ventricular mechanics in a rat model of pulmonary arterial hypertension.

Pulmonary arterial hypertension (PAH) presents a significant challenge to right ventricular (RV) function due to progressive pressure overload, necessitating adaptive remodeling in the form of increased wall thickness, enhanced myocardial contractility and stiffness to maintain cardiac performance. However, the impact of these remodeling mechanisms on RV mechanics in not clearly understood. In addition, there is a lack of quantitative understanding of how each mechanism individually influences RV mechanics. Utilizing experimental data from a rat model of PAH at three distinct time points, we developed biventricular finite element models to investigate how RV stress and strain evolved with PAH progression. The finite element models were fitted to hemodynamic and morphological data to represent different disease stages and used to analyze the impact of RV remodeling as well as the altered RV pressure. Furthermore, we performed a number of theoretical simulation studies with different combinations of morphological and physiological remodeling, to assess and quantify their individual impact on overall RV load and function. Our findings revealed a substantial 4-fold increase in RV stiffness and a transient 2-fold rise in contractility, which returned to baseline by week 12. These changes in RV material properties in addition to the 2-fold increase in wall thickness significantly mitigated the increase in wall stress and strain caused by the progressive increase in RV afterload. Despite the PAH-induced cases showing increased wall stress and strain at end-diastole and end-systole compared to the control, our simulations suggest that without the observed remodeling mechanisms, the increase in stress and strain would have been much more pronounced. Our model analysis also indicated that while changes in the RV's material properties-particularly increased RV stiffness - have a notable effect on its mechanics, the primary compensatory factor limiting the stress and strain increase in the early stages of PAH was the significant increase in wall thickness. These findings underscore the importance of RV remodeling in managing the mechanical burden on the right ventricle due to pressure overload.

Adolescent Healthcare Access: A Qualitative Study of Provider Perspectives.

INTRODUCTION: Adolescent access to quality healthcare is key to prevention and early intervention for health risk behaviors. This paper provides a healthcare provider perspective on barriers and facilitators to youth accessing care. METHODS: Five focus groups were conducted from November to December 2020 with providers from a variety of healthcare settings. Participants were asked to describe their respective adolescent patient populations, adolescent-specific health concerns, and organizational accommodations specific for youth services. Transcripts were analyzed using Inductive Thematic Analysis and themes were grouped using a social-ecological framework. RESULTS: At an individual level, providers noted that an adolescent's knowledge and ability to navigate services varied greatly across settings. Providers identified provider trust and parent/guardian support as key interpersonal factors that support adolescents' access to services. Organizational factors included bureaucratic barriers and the clinic's reputation among youth. Community factors centered on mistrust within healthcare systems and stigmatization of seeking certain types of services. Participants also described how state-level policies influence parent/guardian consent requirements, which can limit adolescents' access to care. CONCLUSION: Adolescent access to and utilization of healthcare in the United States is a complex problem requiring systems-level change. Healthcare organizations and providers have the opportunity and capacity to positively influence adolescents' healthcare access and experiences, however a lack of standardized, clinic-level priorities and guidelines can limit adolescent-centered care.

Evaluating community-driven cardiovascular health policy changes in the United States using agent-based modeling.

Comprehensive smoke-free policy is a strategy to prevent cardiovascular disease (CVD) at a population-level; however, evaluating their long-term outcomes is difficult. This study used an agent-based model to estimate long-term impacts of a comprehensive smoke-free policy, as it was implemented in two communities, Arlington and Mesquite, Texas. The model predicted the percentage of myocardial infarction (MI), stroke, and diabetes in the population 10 and 20 years following policy adoption. In Arlington, the percentage of the population with these conditions each decreased by approximately 0.5% over 20 years; in Mesquite, the percentage of the population with diabetes, myocardial infarction (MI), and stroke decreased by 1.1%, 0.6%, and 0.3%, respectively, after 20 years. The results were statistically significant (p < 0.001). As an evaluation strategy, agent-based modeling can help researchers and practitioners estimate the potential long-term effects of policies and garner intervention support for implementation.

A program evaluation of the Innovative Teen Pregnancy Prevention Programs (iTP3) Project.

BACKGROUND: Teen pregnancy prevention in the United States has traditionally focused on the development, testing, and subsequent implementation of a set of evidence-based programs (EBPs), recommended nationally. However, these existing EBPs often do not prioritize the most at-risk or vulnerable populations. METHODS: The Innovative Teen Pregnancy Prevention Programs (iTP3) project was funded to facilitate the development of new, innovative programs to reach disparate populations. Through a mixed methods design, iTP3 evaluated the process and resulting innovative programs from five iterative cohorts of funded organizations, referred to as Innovators. iTP3 utilized both a traditional funding model with more traditional methods of capacity building assistance, but transitioned over time to a design-focused funding model in which organizations and individuals developed innovative programs through an intensive human centered design process. RESULTS: Evaluation results showed that the resulting portfolio of programs had differences in the types of programs resulting from the differing funding models. Notable differences among programs from the two funding models include program length, along with personnel, time, and resources needed to develop and manage. CONCLUSION: Both traditional and design funding models led to innovative programs, with notable differences in the development process and resulting programs.

Supporting and Enabling the Process of Innovation in Public Health: The Framework for Public Health Innovation.

This manuscript introduces a new framework for creating innovations in public health-the Framework for Public Health Innovation. The framework was developed through a longitudinal qualitative research study that investigated the process of creating innovative adolescent health programs. Interviews were conducted with a national sample of 26 organizations over two time points. Data collection focused on the process of innovative program development; organizational capacity; training; and technical assistance needs, successes, and barriers. The framework was developed and modified based on interview findings and expert advice; then, the final framework was validated with content experts. The framework illustrates a dynamic process of innovation that begins with dissatisfaction with the status quo, and then, illustrates three necessary components for innovation-space, process, and partnerships. Four categories of innovation, which range in complexity, are proposed: (1) creating a new component to an existing program, (2) adapting an existing program to meet new needs, (3) taking an alternative approach to addressing an existing program, and (4) reframing a health problem from a new perspective. As illustrated by a feedback loop, the resulting innovations disrupt the status quo. This model can be applied to any content area in public health and is useful for both research and practitioners.

Social-Ecological Barriers to Access to Healthcare for Adolescents: A Scoping Review.

Access to healthcare for adolescents is often overlooked in the United States due to federal and state-sponsored insurance programs such as Medicaid and the Children's Health Insurance Program. While these types of programs provide some relief, the issue of healthcare access goes beyond insurance coverage and includes an array of ecological factors that hinder youths from receiving services. The purpose of this scoping review was to identify social-ecological barriers to adolescents' healthcare access and utilization in the United States. We followed the PRISMA and scoping review methodological framework to conduct a comprehensive literature search in eight electronic databases for peer-reviewed articles published between 2010 and 2020. An inductive content analysis was performed to thematize the categories identified in the data extraction based on the Social-Ecological Model (SEM). Fifty studies were identified. Barriers across the five SEM levels emerged as primary themes within the literature, including intrapersonal-limited knowledge of and poor previous experiences with healthcare services, interpersonal-cultural and linguistic barriers, organizational-structural barriers in healthcare systems, community-social stigma, and policy-inadequate insurance coverage. Healthcare access for adolescents is a systems-level problem requiring a multifaceted approach that considers complex and adaptive behaviors.