Where We Work, Play, And Live: Health Equity and the Physical Environment.

The physical environment in which we live, work, and play has everything to do with our overall well-being and health. This issue of the North Carolina Medical Journal focuses on those physical structures, environmental factors, and access issues that impact North Carolinians' ability to make healthy choices and the policy changes that could improve indicators like access to healthy food, exercise opportunities, and secure and safe housing.

Food for All: An Interview With Sam Springs of Blue Ridge Women in Agriculture.

Limited access to healthy foods can lead to negative health outcomes such as cardiovascular conditions and diabetes. In North Carolina, there are more than 350 "food deserts" where it is difficult for more than 1.5 million residents to access healthy food. In Watauga County, Blue Ridge Women in Agriculture works to fill that gap.

Disruption of pancreatic stellate cell myofibroblast phenotype promotes pancreatic tumor invasion.

In pancreatic ductal adenocarcinoma (PDAC), differentiation of pancreatic stellate cells (PSCs) into myofibroblast-like cancer-associated fibroblasts (CAFs) can both promote and suppress tumor progression. Here, we show that the Rho effector protein kinase N2 (PKN2) is critical for PSC myofibroblast differentiation. Loss of PKN2 is associated with reduced PSC proliferation, contractility, and alpha-smooth muscle actin (α-SMA) stress fibers. In spheroid co-cultures with PDAC cells, loss of PKN2 prevents PSC invasion but, counter-intuitively, promotes invasive cancer cell outgrowth. PKN2 deletion induces a myofibroblast to inflammatory CAF switch in the PSC matrisome signature both in vitro and in vivo. Further, deletion of PKN2 in the pancreatic stroma induces more locally invasive, orthotopic pancreatic tumors. Finally, we demonstrate that a PKN2KO matrisome signature predicts poor outcome in pancreatic and other solid human cancers. Our data indicate that suppressing PSC myofibroblast function can limit important stromal tumor-suppressive mechanisms, while promoting a switch to a cancer-supporting CAF phenotype.

Engaging the Power of Communities for Better Health.

Authentically engaging community residents is necessary to impact social drivers of health. Acknowledging the value of residents' lived experiences in the planning, implementation, and financial decisions of community engagement initiatives is key. Sustainability of community engagement initiatives depends on open communication and follow-through on commitments.

Collaborating for Community Health.

The Greensboro Housing Coalition was founded 27 years ago to advocate for fair, safe, decent, and affordable housing for low- to moderate-income individuals. We advocate in 4 primary service areas: foreclosure prevention/homeowner counseling, homelessness prevention/ rental housing counseling, healthy homes, and our Community Centered Health Initiative.

Degree of Cajal-Retzius Cell Mislocalization Correlates with the Severity of Structural Brain Defects in Mouse Models of Dystroglycanopathy.

The secondary dystroglycanopathies are characterized by the hypoglycosylation of alpha dystroglycan, and are associated with mutations in at least 18 genes that act on the glycosylation of this cell surface receptor rather than the Dag1 gene itself. At the severe end of the disease spectrum, there are substantial structural brain defects, the most striking of which is often cobblestone lissencephaly. The aim of this study was to determine the gene-specific aspects of the dystroglycanopathy brain phenotype through a detailed investigation of the structural brain defects present at birth in three mouse models of dystroglycanopathy-the FKRP(KD) , which has an 80% reduction in Fkrp transcript levels; the Pomgnt1null , which carries a deletion of exons 7-16 of the Pomgnt1 gene; and the Large(myd) mouse, which carries a deletion of exons 5-7 of the Large gene. We show a rostrocaudal and mediolateral gradient in the severity of brain lesions in FKRP(KD) , and to a lesser extent Pomgnt1null mice. Furthermore, the mislocalization of Cajal-Retzius cells is correlated with the gradient of these lesions and the severity of the brain phenotype in these models. Overall these observations implicate gene-specific differences in the pathogenesis of brain lesions in this group of disorders.

A randomised, crossover study on an electronic vapour product, a nicotine inhalator and a conventional cigarette. Part A: Pharmacokinetics.

The pharmacokinetic (PK) profile of nicotine delivered by an Electronic Vapour Product (EVP) was characterised in a 2-part study in smokers. The study was designed as a randomised, controlled, four-way crossover trial. Part 1 compared an unflavoured e-liquid (UF2.0%) and a flavoured e-liquid (FL2.0%) to a conventional cigarette (CC; JPS Silver King Size, 0.6 mg) and a licensed nicotine inhalator (Nicorette(®); 15 mg). Part 2 compared e-liquids with increasing nicotine concentrations (0%, 0.4%, 0.9%, 2.0%). Subjects used each different product for a daily use session. In Part 1, maximum plasma nicotine concentration (Cmax) for UF2.0%, FL2.0%, Nicorette(®) and CC was 3.6, 2.5, 2.5 and 21.2 ng/mL, respectively. The time to maximum plasma nicotine concentration (Tmax) was longer for the EVP (UF2.0%, 9.0 min; FL2.0%, 10.0 min) and the nicotine inhalator (13.0 min) compared to CC (3.0 min). In Part 2, EVP with 0%, 0.4%, 0.9% and 2.0% nicotine produced Cmax values of 0.6, 1.0, 1.9 and 3.6 ng/mL, respectively. At the maximum nicotine concentration of 2% as prescribed by the European Tobacco Directive, the EVP achieved nicotine delivery that was comparable to the inhalator. EVPs thus offer a potential alternative to nicotine inhalator devices for those finding it difficult to quit smoking.

A randomised, crossover study on an electronic vapour product, a nicotine inhalator and a conventional cigarette. Part B: Safety and subjective effects.

An Electronic Vapour Product (EVP) has been evaluated for short-term safety parameters and subjective effects in a 2-part study, in smokers. Part 1 compared the EVP with unflavoured (UF) and flavoured (FL) e-liquid at 2.0% nicotine to a conventional cigarette (CC; JPS Silver King Size, 0.6 mg) and a licensed nicotine inhalator (Nicorette(®), 15 mg). Part 2 assessed the effect of increasing concentrations of nicotine in the e-liquid used with the EVP (0%, 0.4%, 0.9%, 2.0%). The study was designed as a randomised, controlled, crossover trial. Outcomes included adverse events (AEs), vital signs, exhaled carbon monoxide (CO), clinical laboratory parameters, smoking urges and withdrawal symptoms. In both study parts, only mild non-serious AEs were reported. No major differences were observed in AEs between the EVPs and Nicorette(®). Exhaled CO levels only increased for CC. All products appeared to decrease smoking urges and nicotine withdrawal symptom scores to a similar extent. The EVP had a similar short-term safety profile to Nicorette(®) and relieved smoking urges and nicotine withdrawal symptoms to a similar extent as Nicorette(®) and CC. Unlike nicotine replacement therapies, the EVP may offer an alternative for those finding it difficult to quit the behavioural and sensorial aspects of smoking.

Rural hospital information technology implementation for safety and quality improvement: lessons learned.

This grant involved a hospital collaborative for excellence using information technology over 3-year period. The project activities focused on the improvement of patient care safety and quality in Southern rural and small community hospitals through the use of technology and education. The technology component of the design involved the implementation of a Web-based business analytic tool that allows hospitals to view data, create reports, and analyze their safety and quality data. Through a preimplementation and postimplementation comparative design, the focus of the implementation team was twofold: to recruit participant hospitals and to implement the technology at each of the 66 hospital sites. Rural hospitals were defined as acute care hospitals located in a county with a population of less than 100 000 or a state-administered Critical Access Hospital, making the total study population target 188 hospitals. Lessons learned during the information technology implementation of these hospitals are reflective of the unique culture, financial characteristics, organizational structure, and technology architecture of rural hospitals. Specific steps such as recruitment, information technology assessment, conference calls for project planning, data file extraction and transfer, technology training, use of e-mail, use of telephones, personnel management, and engaging information technology vendors were found to vary greatly among hospitals.

A hospital-randomized controlled trial of a formal quality improvement educational program in rural and small community Texas hospitals: one year results.

OBJECTIVE: To investigate the effectiveness of a quality improvement educational program in rural hospitals. DESIGN: Hospital-randomized controlled trial. PARTICIPANTS: A total of 47 rural and small community hospitals in Texas that had previously received a web-based benchmarking and case-review tool. INTERVENTION: The 47 hospitals were randomized either to receive formal quality improvement educational program or to a control group. The educational program consisted of two 2-day didactic sessions on continuous quality improvement techniques, followed by the design, implementation and reporting of a local quality improvement project, with monthly coaching conference calls and annual follow-up conclaves. MAIN OUTCOME MEASURES: Performance on core measures for community-acquired pneumonia and congestive heart failure were compared between study groups to evaluate the impact of the educational program. RESULTS: No significant differences were observed between the study groups on any measures. Of the 23 hospitals in the intervention group, only 16 completed the didactic program and 6 the full training program. Similar results were obtained when these groups were compared with the control group. CONCLUSIONS: While the observed results suggest no incremental benefit of the quality improvement educational program following implementation of a web-based benchmarking and case-review tool in rural hospitals, given the small number of hospitals that completed the program, it is not conclusive that such programs are ineffective. Further research incorporating supporting infrastructure, such as physician champions, financial incentives and greater involvement of senior leadership, is needed to assess the value of quality improvement educational programs in rural hospitals.

Challenges in conducting a hospital-randomized trial of an educational quality improvement intervention in rural and small community hospitals.

The study design for this hospital-randomized controlled trial of an educational quality improvement intervention in rural and small community hospitals, following the implementation of a Web-based quality benchmarking and case review tool, specified a control group and a rapid-cycle quality improvement education group of >or= 30 hospitals each. Of the 64 hospitals initially interested in participating, 7 could not produce the required quality data and 10 refused consent to randomization. Of the 23 hospitals randomized to the educational intervention, 16 completed the educational program, 1 attended the didactic sessions but did not complete the required quality improvement project, 3 enrolled in "make-up" sessions, and 3 were unable to attend. Of the 42 individuals who attended educational sessions, 5 (12%) have left their positions. Quality improvement interventions require several different approaches to engage participating organizations and should include plans to train new staff given the high turnover of health care quality improvement personnel.

Innovative peer review model for rural physicians: system design and implementation.

CONTEXT: The peer review process in small rural hospitals is complicated by limited numbers of physicians, conflict of interest, issues related to appropriate utilization of new technology, possibility for conflicting recommendations, and need for external expertise. PURPOSE: The purpose of this project was to design, test, and implement a virtual peer review system for small rural hospitals in Texas. We sought to define the characteristics of a virtual peer review system in the context of rural health care, and to explore the benefits from peer review administration within a rural network supported by a university. METHODS: Physicians from small rural hospitals participated in pilot testing of the system. Policies and procedures reflecting the innovative character of the new peer review process were developed based on legal/regulatory requirements and desired educational focus of the process. An information technology system to support the virtual peer review was selected, tested, and deployed. FINDINGS: The system tests suggested feasibility of the procedures, reliability of the communication lines, and functional anonymity of the hospitals and physicians participating in the virtual peer review. Participating institutions and individual physicians expressed satisfaction with the reliability and user friendliness of the system as demonstrated during the pilot tests. CONCLUSIONS: Hospital licensing and accreditation require a process to monitor and evaluate the care of patients. Utilizing means of virtual communication is a viable option for small rural hospitals. This process is dependable, user-friendly and provides functional anonymity to participating hospitals and physicians. The peer review system has successfully functioned since 2004.

A hospital-randomized controlled trial of an educational quality improvement intervention in rural and small community hospitals in Texas following implementation of information technology.

Rural and small community hospitals typically have few resources and little experience with quality improvement (QI) and, on average, demonstrate poorer quality of care than larger facilities. Formalized QI education shows promise in improving quality, but little is known about its effect in rural and small community hospitals. The authors describe a randomized controlled trial assigning 47 rural and small community Texas hospitals to such a program (n = 23) or to the control group (n = 24), following provision of a Web-based quality benchmarking and case review tool. Centers for Medicare and Medicaid Services Core Measures composite scores for congestive heart failure (CHF) and community-acquired pneumonia (CAP), using Texas Medical Foundation data collected via the QualityNet Exchange system, are compared for the groups, for 2 years postintervention. Given the estimated baseline rates for the CHF (68%) and CAP (66%) composites, the cohort enables the detection of 14% and 11% differences (alpha = .05; power = 0.8), respectively.

The role of public health nurses in bioterrorism preparedness.

BACKGROUND: Public health nurses have a central function in the public health system. Nurses conduct disease surveillance, which is an important first step in recognizing diseases caused by bioterrorist agents. Unfortunately, the current public health infrastructure and expectations for public health nurses are not clearly defined and therefore pose serious difficulties for conducting disease surveillance. Increased surveillance activities for bioterrorism preparedness add more responsibilities to the work of public health nurses. METHODS: A qualitative study on disease surveillance was conducted with public health officials at regional and local levels, working in a variety of urban and rural settings in one large public health region in Texas. Data analysis was supported by qualitative research software, The Ethnograph. RESULTS: The study found that the nurses working at the local level were extremely dedicated to serving their communities, had formed informal partnerships that are essential for disease surveillance, and effectively used informal communication channels to obtain critical surveillance information. The study revealed that nurses had unmet needs and experienced multiple barriers to conducting disease surveillance. CONCLUSIONS: The study's findings could have implications for public policy and nursing leadership. Defining the structure of the public health system and the scope of public health nurses' responsibilities will serve as the cornerstone for improvement of bioterrorism preparedness.

Lessons learned from a regional strategy for resource allocation.

Two qualitative case studies focus on the allocation of CDC funds distributed during 2002 for bioterrorism preparedness in two Texas public health regions (each as populous and complex as many states). Lessons learned are presented for public health officials and others who work to build essential public health services and security for our nation. The first lesson is that personal relationships are the cornerstone of preparedness. A major lesson is that a regional strategy to manage funds may be more effective than allocating funds on a per capita basis. One regional director required every local department to complete a strategic plan as a basis for proportional allocation of the funds. Control of communicable diseases was a central component of the planning. Some funds were kept at the regional level to provide epidemiology services, computer software, equipment, and training for the entire region. Confirmation of the value of this regional strategy was expressed by local public health and emergency management officials in a focus group 1 year after the strategy had been implemented. The group members also pointed out the need to streamline the planning process, provide up-to-date computer networks, and receive more than minimal communication. This regional strategy can be viewed from the perspective of adaptive leadership, defined as activities to bring about constructive change, which also can be used to analyze other difficult areas of preparedness.

Acute vascular rejection and accommodation: divergent outcomes of the humoral response to organ transplantation.

BACKGROUND: The most difficult barrier to organ transplantation is humoral rejection, a condition initiated by binding of antibodies to blood vessels in the graft. Fortunately, humoral rejection is not the only outcome of antibody binding to the graft. In some cases, accommodation, a condition in which the graft does not undergo humoral injury despite the existence of humoral immunity directed against it, occurs and the graft remains seemingly inured. The mechanism underlying accommodation is uncertain, but changes in the function of antibodies, changes in the target antigen, and changes in the graft imparting resistance to injury have been implicated. METHODS: Using the swine-to-baboon cardiac xenograft model, we asked which mechanism(s) may distinguish acute vascular rejection from accommodation. RESULTS: In both acute vascular rejection and accommodation, antibodies were bound and complement activated in blood vessels of the graft. However, in acute vascular rejection, the full complement cascade was activated; while in accommodation, the complement cascade was interrupted, suggesting complement was inhibited in the latter condition. In acute vascular rejection, heparan sulfate and syndecan-4-phosphate, which can aid in complement control, were nearly absent, whereas in accommodation these were present in heightened amounts. CONCLUSION: These findings suggest that control of complement may underlie accommodation, at least in part, and raise the possibility that this control and possibly other protective mechanisms could be exerted by heparan sulfate.