Focus Area: Research

This project is seeking to develop a novel diagnostic model for aspiration pneumonia (AP) through identification of a unique molecular signature for lung injury due to aspiration. Pneumonia is the leading infectious cause of mortality in older adults and about 15 percent of cases are due to AP, which currently lacks objective diagnostic criteria and methodology for identifying high risk patients. The results of this project could inform identification of effective interventions for AP and promote improved health outcomes for at-risk older adults throughout Wisconsin.

This project explores the effects of puberty blockers and exogenously administered reproductive hormones on rats to better understand their impact on behavior, brain development and reproductive physiology.

This project, titled Non-Invasive Ultrasound Urodynamics to Improve Medical Care for Men with Lower Urinary Tract Symptoms (LUTS) in Rural Areas, aims to develop a method to evaluate LUTS using modalities that are currently available in every urology practice. LUTS include increased urinary frequency, urgency and diminished stream which can significantly impact an individual’s quality of life and lead to various medical complications such as urinary retention, infection and renal failure. Multichannel urodynamics (MCUD) has been used to make an accurate diagnosis and distinguish between prostate obstruction and bladder dysfunction. However, the limited availability of MCUD at large medical centers has resulted in men, especially those in rural areas, receiving empirical treatment without accurate diagnostic testing, leading to delays in effective treatment or undergoing unnecessary surgeries.

More than 475,000 Wisconsin residents have diabetes, mostly type 2. This type of diabetes is associated with diet and obesity and is helped through healthy dietary intake. Yet, more innovations in dietary interventions are needed. By leveraging expertise in metabolism and plant genetics, this novel project proposes to develop a source of plant-based foods that will reduce dietary intake of certain nutrients associated with obesity. The findings will inform future studies with the ultimate goal of improved treatment of diabetes and obesity. This project is led by Dudley Lamming, PhD, associate professor, Department and of Medicine and co-principal Investigator: Jacob Brunkard, PhD, assistant professor, Department of Genetics, UW–Madison College of Agricultural and Life Sciences. Collaborators include: Dawn Davis, MD, PhD, professor, Department of Medicine; Daniela Drummond-Barbosa, PhD, professor, Department of Genetics, UW–Madison College of Agricultural and Life Sciences; Shawn Kaeppler, PhD, professor, Department of Agronomy, UW–Madison College of Agricultural and Life Sciences; Hiroshi Maeda, PhD, professor, Department of Botany, UW–Madison College of Letters and Sciences; Judith Simcox, PhD, assistant professor, Department of Biochemistry, UW–Madison College of Agricultural and Life Sciences; Gregory Barrett-Wilt, PhD, Director of Mass Spectrometry, UW–Madison Biotechnology Center. Dudley Lamming (left) and Jacob Brunkard

The Screening in Trauma for Opioid Misuse Prevention: Adaptive Intervention (STOMP-AI) project is leading efforts to address the critical issue of opioid misuse and use disorder (OMUD) among patients hospitalized for traumatic injuries. The project is led by Dr. Randall Brown MD, PhD, DFASAM, professor, Department of Family Medicine and co-collaborator Ben Zarzaur, MD, MPH, FACS, professor, Department of Surgery. OMUD remains a devastating epidemic in the United States, and prescription opioid misuse (POM) continues to contribute to this national health crisis. By implementing a brief, preventative telehealth intervention tailored to individuals’ risk for OMUD, the project aims to improve nationwide opioid misuse prevention strategies. Successful completion of this project could ultimately save lives and enhance the quality of care for trauma patients. The research team includes a number of multidisciplinary collaborators, including Andrew Quanbeck, PhD, associate professor, Department of Family Medicine and Community Health; Shinye Kim, PhD, M Ed, assistant professor, Department of Counseling Psychology, UW–Madison School of Education; Colleen Trevino, RN, NP, PhD, associate professor, Department of Surgery, Medical College of Wisconsin; Danny Almirall, PhD, research associate professor, Institute for Social Research, Department of Statistics, University of Michigan; Tamara Somers, PhD, associate professor, Department of Psychiatry and Behavioral Sciences, Duke University

Screening in Trauma for Opioid Misuse Prevention (STOMP) aimed to address the opioid addiction and overdose epidemic in Wisconsin by developing and implementing a screening tool to identify risk factors for opioid misuse in individuals who experienced traumatic injuries. The study enrolled 295 patients who suffered traumatic injuries and were prescribed opioids upon discharge. About 59 percent of participants completed all required measures during the six-month follow-up period, and six individuals met criteria for opioid use disorder six months after receiving their prescription. A screening tool, developed using statistical modeling, was successfully pilot tested at four trauma centers across the state. This tool will contribute to efforts to prevent opioid addiction and related complications in this high-risk group.

This project, Stroke Prevention in the Wisconsin Native American Population, aimed to establish a stroke prevention program for Wisconsin’s Native American population as this community faces higher rates of stroke, coronary artery disease, and associated risk factors compared to other racial groups. Despite challenges due to the COVID-19 pandemic, the researchers successfully engaged the Native American community with web-based education and a wellness coach who was based on the reservation. Preliminary data showed a greater need for stroke prevention than initially expected, with approximately 80 percent of tribe elders at increased risk for stroke and 50 percent having diabetes. The project has received bridge funding to support their work while seeking additional funding for the long-term continuation of the stroke prevention program.

After the initial peak of the COVID-19 pandemic in April 2020, physicians noted a surge of red to purple bruise-like bumps on the toes of otherwise healthy patients. This symptom, popularly referred to as “COVID toes,” is clinically identical to a skin condition known as chilblains. Rarely, chilblains can be a cutaneous manifestation of the type 1 interferonopathies, genetic disorders associated with elevated levels of type 1 interferons. Type 1 interferons are proteins produced in response to viral infections and are critical in the host response to the SARS-CoV-2 infection. However, the precise link between COVID toes and the SARS-CoV-2 virus remained unknown. Because patients with COVID toes often reported close contacts with COVID-19 infection but consistently tested negative for infection in their blood and nasopharynx, researchers hypothesized that COVID toes could be a manifestation of resiliency to the SARS-CoV-2 virus via a robust and early type 1 interferon response, which remained visible in the toes. Researchers found evidence of local activation of the type I interferon in COVID toe biopsies that was significantly higher than in normal skin from patients without COVID. Researchers also identified the presence of viral RNA in patients’ toes, suggesting that SARS-CoV-2 infection could be a possible trigger for COVID toes. Finally, a golden hamster animal model was employed to evaluate whether SARS-CoV-2 viral RNA could reach the toes. In this model, after low-dose exposure of SARS-CoV-2 through the nasopharynx, viral RNA was found both in the lungs and indeed in the toes of infected hamsters. The hamsters mounted a robust type I interferon response in their lungs and their toes, and this response closely correlated with the presence of SARS-CoV-2 viral RNA. Previous studies in humans with COVID toes found a very early type 1 interferon response in the peripheral blood, which waned within days. This study found a durable type 1 interferon response in skin but not in the peripheral blood, which could explain why most patients with COVID toes felt systemically well aside despite their skin findings.

This research studied common genetic changes in a gene called PI3K, a type of mutation found frequently in HPV-associated anal, head, and neck cancers, with the goal of advancing knowledge to inform choices of anticancer drugs for HPV-associated cancers. The researchers found that these genetic changes drove development of cancers in mice, but that drugs targeting PI3K did not necessarily inhibit human cancers, indicating a need to develop additional steps to assess whether a cancer will respond to a targeted drug therapy. A new type of culture system, called the tumor spheroid culture system, may provide that means.

Diabetes costs Wisconsin over $6 billion in health care costs each year. Diabetes is a particularly acute problem for minority groups in our state, affecting over 40 percent of American Indian and 20 percent of African American adults. Altogether, nearly two million Wisconsin residents are estimated to have diabetes or pre-diabetes, which are associated with diet and obesity. Because of this, dietary interventions that promote blood sugar control and a healthy weight are needed. The researchers found that reducing dietary levels of three amino acids restored blood sugar control and normal body composition in obese, insulin-resistant mice, even if they consumed a high-fat, high-sugar diet. Further research will test the translatability of the findings to humans.