Health Services Research Commons^™

Phosphorylation Of Ryr1 At Ser2902 Decreases Ca2+ Leak In Skeletal Muscle And Susceptibility To Malignant Hyperthermia And Heat Stroke, Rachel Sue Zhen Yee, Chang Seok Lee, Ting Chang, Sung Yun Jung, Omar Yousif, Courtney Cavazos, John Colyer, Filip Van Petegem, George G Rodney, Susan L Hamilton

Faculty, Staff and Students Publications

The ryanodine receptor 1 (RYR1) is the sarcoplasmic reticulum (SR) Ca2+ release channel required for both skeletal muscle contraction and Ca2+ leak. Mutations in RYR1 cause malignant hyperthermia susceptibility (MHS) and enhanced sensitivity to heat stroke (ESHS), which can result in death due to excessive skeletal muscle thermogenesis upon exposure to volatile anesthetics or heat. Here, we investigated the molecular and physiological functions of phosphorylation of RYR1 at Ser2902 by the kinase SPEG (striated muscle preferentially expressed protein). Muscle from SPEG-deficient mice expressing RYR1 with a Ser2902 →Asp2902 (S2902D) point mutation to mimic phosphorylation by SPEG showed decreased SR Ca2+ …

Strain-Specific Variability In Viral Kinetics, Cytokine Response, And Cellular Damage In Air-Liquid Cultures Of Human Nasal Organoids After Infection With Sars-Cov-2, Gina M Aloisio, Trevor J Mcbride, Letisha Aideyan, Emily M Schultz, Ashley M Murray, Anubama Rajan, Erin G Nicholson, David Henke, Laura Ferlic-Stark, Amal Kambal, Hannah L Johnson, Elina A Mosa, Fabio Stossi, Sarah E Blutt, Pedro A Piedra, Vasanthi Avadhanula

Faculty, Staff and Students Publications

SARS-CoV-2 variants have demonstrated distinct epidemiological patterns and clinical presentations throughout the COVID-19 pandemic. Understanding variant-specific differences at the respiratory epithelium is crucial for understanding their pathogenesis. Here, we utilized human nasal organoid air-liquid interface (HNO-ALI) cell cultures to compare the viral replication kinetics, innate immune response, and epithelial damage of six different strains of SARS-CoV-2 (B.1.2, WA, Alpha, Beta, Delta, and Omicron). All variants replicated efficiently in HNO-ALIs, but with distinct replication kinetic patterns. The Delta variant exhibited delayed replication kinetics, achieving a steady state at 6 days post-infection compared to 3 days for other variants. Cytokine analysis revealed …

Effect Of Establishing A Separate Outpatient Pharmacy Counter On Reducing Waiting Time In Mayapada Hospital, Hanifan Irham, Masyitoh Basabih

Jurnal ARSI : Administrasi Rumah Sakit Indonesia

Pharmacy waiting time is one of the quality indicators that affects patient satisfaction in hospitals. One of the various efforts to reduce drug waiting times is adding outpatient pharmacies. This study aims to see whether the addition of pharmacies based on guarantors can reduce drug waiting times for outpatients. This is an observational study with a cross-sectional design. The sample included 11,703 patients who received prescriptions at Mayapada Hospital Bogor outpatient with insurance and private coverage. Data were collected over four months, two months before and two months after the separation of pharmacies. Waiting time data were obtained from the …

America's Physician Shortage: Look To Pas, Not Abroad, Raquelle Akavan, Laura Juarez

Lynchburg Journal of Medical Science

The United States has long addressed physician shortages by recruiting international medical graduates (IMGs), often from low- and- middle income countries. This "brain drain" deprives already fragile health systems and adds to worldwide health disparities. New state legislation has eased licensing standards for IMGs and generated variable training pathways creating patient safety risk in underserved groups. At the same time, the U.S. has a sustainable, highly trained, and proven ready workforce: physician associates (PA). Created in the 1960s to address physician shortages, PAs undergo intensive graduate-degree education, uniform clinical education, and national certification on par with physicians. Nonetheless, obsolete laws …

Research On Identification And Evaluation Method Of Medical Experts' Expertise Domains In Online Health Community Based On Knowledge Graph, Yunjiang Xi, Qian Zhang, Man Li, Juan Yu

Journal of Scientific Information Research

[Purpose/significance] This study aims to identify the expertise domains of medical experts, and evaluates their domain levels to provide a basis for community expert recommendation.

[Method/process] This study utilized the improved OneRel model to structure community historical Q&A into entity relation triples. Then used the knowledge graph triples to test the consistency between the medical knowledge in the community Q&A and the domain knowledge, and finally obtained the doctor's domain levels by aggregating in each expertise domain.

[Result/conclusion] Using the data example from xywy.com website, 214 doctors in the community were ranked in terms of their average level of expertise …

Single Cell Sequencing Analysis Of Respiratory Syncytial Virus-Infected Pediatric And Adult Human Nose Organoids Reveals Age Differences, Proliferative Diversity And Identifies Novel Cellular Tropism, Anubama Rajan, Divya Nagaraj, Carolyn Bomidi, Gina M Aloisio, Ashley M Murray, Emily M Schultz, Amal Kambal, Mary K Estes, Erin Nicholson, Vasanthi Avadhanula, Sarah E Blutt, Pedro A Piedra

Faculty, Staff and Students Publications

Respiratory syncytial virus (RSV) is a leading cause of infant death across the globe. Age is a significant factor that contributes to the severity of infection in young children. RSV primarily infects the ciliated cells of the airway epithelium, induces mucus hypersecretion, and impaired mucociliary clearance. Better understanding of RSV infection at the cellular level is needed for the development of effective therapeutic interventions. To investigate the age difference and comprehensively understand gene signatures associated with RSV infection, we performed single-cell transcriptomic analysis of adult and pediatric human nose organoids (HNOs) infected with RSV. Our analysis revealed a significant difference …

Author Correction: Clonal Dynamics And Somatic Evolution Of Haematopoiesis In Mouse, Chiraag D Kapadia, Nicholas Williams, Kevin J Dawson, Caroline Watson, Matthew J Yousefzadeh, Duy Le, Kudzai Nyamondo, Sreeya Kodavali, Alex Cagan, Sarah Waldvogel, Xiaoyan Zhang, Josephine De La Fuente, Daniel Leongamornlert, Emily Mitchell, Marcus A Florez, Krzysztof Sosnowski, Rogelio Aguilar, Alejandra Martell, Anna Guzman, David Harrison, Laura J Niedernhofer, Katherine Y King, Peter J Campbell, Jamie Blundell, Margaret A Goodell, Jyoti Nangalia

Faculty, Staff and Students Publications

No abstract provided.

Dysphoric Milk Ejection Reflex: Prevalence And Associations With Self-Reported Mental Health History, Megan Howard, Alison N Goulding, Anitha Muddana, Terri L Fletcher, Nicole Cirino, Alison M Stuebe

Faculty, Staff and Students Publications

This study sought to determine prevalence of Dysphoric Milk Ejection Reflex (D-MER) and mental health correlates in a cohort of patients from a breastfeeding medicine clinic. We determined prevalence of D-MER symptoms and performed bivariate analyses to explore associations between D-MER symptoms, demographics, and self-reported mental health history. Among 271 patients, 42 (15.5%) reported D-MER. Women with D-MER symptoms were more likely to report a history of panic attacks (28.6 vs. 12.2%, OR 2.87, 95% CI 1.23-6.25).

The Science Of Sound: Studying The Cognitive, Emotional, And Physiological Effects Of Frequency, Genre, And Music, Jett Yarborough

Senior Honors Theses

Music influences emotion, physiology, and cognition, yet little is known about how the frequency it is tuned to affects these influences. Prior research has shown that music tuned to 432 Hz can reduce stress, lower blood pressure, and improve sleep. My colleagues and I conducted two studies to investigate this. Our research found that music tuned to 432 Hz promotes a significant increase in memory retention and induces a state of focus and relaxation. These results suggest that shifting from the standard tuning frequency of 440 Hz to 432 Hz could have a profoundly positive impact on our daily lives. …

Nonprofit Hospital Ceo Compensation: Does Quality Matter?, Derek Jenkins, Marah Short, Vivian Ho

Faculty, Staff and Students Publications

Background: Past research has documented that increases in profits and health system size, as well as increases in the reward generosity for improving these metrics play an important role in explaining increases in nonprofit hospital CEO pay between 2012 and 2019.

Objectives: To test whether hospital quality measures play a supplemental role in determining CEO pay.

Research design: We estimated linear regressions for 2012 and 2019 of the log of CEO wages on system or independent hospital characteristics, including quality. The regressions were used to construct a Oaxaca decomposition of factors associated with CEO compensation.

Subjects: One thousand forty-seven nonprofit …

Exploring The Transformative Effects Of Calorie Restriction On The Lacrimal Gland In Adult Mice, Olivier Mauduit, Prashant Kumar, Kaitlin K Scholand, Emre Aksan, Laura Schaefer, Anmar Abu-Romman, Vanessa Delcroix, Zhiyuan Yu, Aude I Sindikubwabo, Ron Korstanje, Helen P Makarenkova, Cintia S De Paiva

Faculty, Staff and Students Publications

Advanced age is one of the most recognizable risk factors for dry eye. Dry eye disease affects millions worldwide and can result from age-related lacrimal gland dysfunction, which correlates with a decline in lacrimal gland secretory cell function and chronic inflammation. This study investigated the potential of calorie restriction to maintain lacrimal gland and ocular surface health. Adult female C57BL/6 J mice were subjected to a 40% calorie restriction for 4 months, starting at 6-7 months and continuing until 10-11 months. These mice were compared to controls fed ad libitum. Bulk RNA sequencing of lacrimal glands, conjunctiva, and cornea subjected …

Plasma Proteome Correlations With Liver Stiffness In Pediatric Cholestasis Implicate Epithelial To Mesenchymal Transition, Benjamin L Shneider, Rupa S Kanchi, Sandra L Grimm, Sridevi Devaraj, Juliet Emamaullee, Jeremy Schraw, Philip J Lupo, Jorge A Bezerra, Kathleen M Loomes, John C Magee, Ronald J Sokol, Kasper S Wang, Alyssa Kriegmeier, Evelyn Hsu, Jean P Molleston, Philip Rosenthal, Rohit Kohli, Saul J Karpen, Simon P Horslen, M Kyle Jensen, Arianna Barbetta, Cristian Coarfa

Faculty, Staff and Students Publications

Background: Pediatric cholestatic liver diseases can be characterized by rapidly progressive fibrosis. A multicenter cross-sectional analysis of vibration-controlled elastography in biliary atresia (BA), alpha-1 antitrypsin deficiency (A1AT), and Alagille syndrome (ALGS) was leveraged to interrogate the plasma proteome relative to liver stiffness measurements (LSM).

Methods: Slow off-rate modified aptamer scanning profiling of >7000 proteins in plasma from 187 children with BA (n=93), A1AT (n=31), ALGS (n=46), and healthy pediatric controls (n=17) was performed, and correlations with LSM were undertaken.

Results: There was an abundance of LSM correlated proteins (BA n=2720, A1AT n=694, ALGS n=5968). Interestingly, a distinct plasma proteome was …

Examining The Relationship Between Dysphagia, Eating-Related Symptoms, And Diet Quality Among Oropharyngeal Cancer Patients During Critical Stages Of Cancer Survivorship: The U-Dine Study, Beatrice Manduchi, Vlad C Sandulache, Ji Yun Tark, Shreela Sharma, Ruosha Li, Emily Roller, Andrew Bevelhimer, Katherine A Hutcheson, Marcia C De Oliveira Otto

Faculty, Staff and Students Publications

Background: Diet quality is a modifiable factor impacting treatment outcomes in oropharyngeal cancer (OPC), yet the effect of dysphagia and self-reported eating-related symptoms remains unclear. This study examined their associations with diet quality in OPC patients.

Methods: A cross-sectional analysis was conducted with two parallel cohorts from MD Anderson Cancer Center and Michael E. DeBakey Veterans Affairs Medical Center as part of the Uncovering the Long-Term Impact of OPC and Dysphagia on Dietary Quality and Nutrition Among Cancer Survivors (U-DINE) Study. Participants at varying survivorship stages (prediagnosis, 3-6 and 18+ months posttreatment) were assessed for dysphagia (DIGEST scale) and six …

Nrf2 Hyperactivation As A Driver Of Radiotherapy Resistance And Suppressed Antitumor Immunity In Head And Neck Squamous Cell Carcinoma, Rutulkumar Patel, Kalil Saab, Lixia Luo, Yan Ma, Rashid Abdullah Osman, Nerissa T Williams, Jeffrey Everitt, Maciej J Zelazowski, Patricia Castro, William K Decker, William H Hudson, Jeffrey N Myers, Vlad C Sandulache, Mitchell J Frederick, Yvonne M Mowery, David G Kirsch

Faculty, Staff and Students Publications

Purpose: Alterations in the KEAP1/NFE2L2 (NRF2)/CUL3 pathway occur in ∼20% of human head and neck squamous cell carcinomas (HNSCC) and are associated with resistance to standard-of-care therapy. However, this pathway's role in radiotherapy resistance in HNSCC has not been well studied.

Experimental design: We generated genetically engineered mouse models and developed primary murine cancer cell lines harboring mutations commonly observed in human HNSCC, including inducible activation of PIK3CA and deletion of Trp53, with or without Keap1 loss. Primary tumors were initiated via 4-hydroxytamoxifen injection ± the tobacco carcinogen benzo[a]pyrene (BAP) into the oral buccal mucosa. Tumors were analyzed by Western …

Dermatological Primary Health Care Services For Older Adults In Thailand, Chinmanat Lekhavat, Jiruth Sriratanaban

Journal of Health Research

Background: The increasing population aging worldwide poses challenges to accessibility to dermatological care, especially in rural areas with limited dermatologist availability. Establishing dermatological primary health care (PHC) services for older adults is crucial for improving access, efficiency, and equity. However, no study has systematically explored such a system.

Method: This mixed-methods study employed a participatory action research (PAR) model to identify structural and procedural requirements, patient journeys, health needs, and expectations. Data were collected through focus groups, in-depth interviews, and surveys. Design thinking workshops, guided by PAR principles, were used to develop dermatological PHC services. A survey was conducted across …

Documentation And Referral Of Social Determinants Of Health In New Mexico’S Emergency Departments: International Classification Of Disease, Tenth Revision, Clinical Modification, “Z Codes” (Z55-Z65), Samuel L. Swift, Maya Stefanovic, Roselyn Thalathara

Population Health Research and Scholarship

No abstract provided.

Strongyloides Seropositivity Among Children Utilizing A Mobile Clinic, Lynda Aririguzo, Aditi Gupta, Norma Castillo, Cassandra Duran, Eva H Clark, Ankona Banerjee, Sanghamitra Misra

Faculty, Staff and Students Publications

Experts recommend screening for or presumptively treating strongyloidiasis in foreign-born immigrant children, though prevalence is unknown. Health care providers encounter barriers to following this recommendation. We aimed to describe Strongyloides seropositivity and risk factors among pediatric patients on a mobile clinic. Participants completed a written survey and provided blood for absolute eosinophil count (AEC) and Strongyloides IgG enzyme-linked immunosorbent assay (ELISA). From October 2022 to June 2023, 206 patients participated; 201 (97.6%) were born outside the United States; 97.1% (n = 200) were Hispanic. Most (68.9%) arrived less than 1 year before study enrollment. Four (1.9%) and 3 (1.5%) had …

Cyp1b1 Mediates Cigarette Smoke-Induced Lipid Accumulation In Alveolar Type 2 Cells, Yin Zhu, Siddhika Gamare, Francesca Polverino, Caroline A Owen, Payaningal R Somanath, Xiaoyun Wang, Duo Zhang

Faculty, Staff and Students Publications

Alterations in lipid profiles have been shown in patients with chronic obstructive pulmonary disease (COPD), but the underlying molecular mechanisms remain unclear. In this study, we aimed to investigate the role of cytochrome P450 family-1 subfamily B member 1 (CYP1B1) in cigarette smoke (CS)-induced lipid accumulation in alveolar type II epithelial (AT2) cells. We observed a steady increase in CYP1B1 protein levels in AT2 cells from COPD patients. Additionally, CS exposure induced CYP1B1 expression in AT2 cells of murine lungs. In vitro, treatment with cigarette smoke extract (CSE) not only upregulated CYP1B1 expression but also triggered lipid accumulation in AT2-like …

Observational Activation Of Anterior Cingulate Cortical Neurons Coordinates Hippocampal Replay In Social Learning, Xiang Mou, Daoyun Ji

Faculty, Staff and Students Publications

Social learning enables a subject to make decisions by observing the actions of another. How neural circuits acquire relevant information during observation to guide subsequent behavior is unknown. Utilizing an observational spatial working memory task, we show that neurons in the rat anterior cingulate cortex (ACC) associated with spatial trajectories during self-running in a maze are reactivated when observing another rat running the same maze. The observation-induced ACC activities are reduced in error trials and are correlated with activities of hippocampal place cells representing the same trajectories. The ACC activities during observation also predict subsequent hippocampal place cell activities during …

A Novel Self-Inhaled Nicotine Exposure System In Murine Models Reveals Age-Dependent Metabolic Effects Of Nicotine, Xu Xu, Hailan Liu, Meng Yu, Qingzhuo Liu, Yongxiang Li, Yue Deng, Yuxue Yang, Jingjing Cheng, Yutian Liu, Mengjie Wang, Xing Fang, Longlong Tu, Olivia Z Ginnard, Kristine M Mcdermott, Darah Threat, Fuhui Wang, Meixin Sun, Xinming Liu, Jiamin Qiu, Xi Wu, Jinjing Jian, Tong Zhou, Megan E Burt, Sanika V Jossy, Junying Han, Chunmei Wang, Yongjie Yang, Yong Xu, Yuhan Shi

Faculty, Staff and Students Publications

Background: Nicotine is known to influence metabolism and body weight, yet existing murine models of nicotine exposure often fail to replicate human smoking behaviors accurately. To address this gap, we designed a cost-effective, self-administered nicotine inhalation system that allows mice to voluntarily inhale nicotine vapor generated from e-liquid.

Results: Using this system, we investigated the metabolic effects of nicotine exposure in adult and adolescent mice. Adult mice exposed to nicotine vapor for 10 days exhibited significant weight loss, which was rapidly regained upon cessation, paralleling human smoking patterns. In contrast, adolescent mice did not lose weight during nicotine exposure but …