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The Prevalence Of Pulmonary Aspergillosis In Coronavirus Disease 19 (Covid-19) Patients In Shebin El-Kom Teaching Hospital In Egypt, Asmaa M. Soliman, Elham T. Awad, Mariam A. Fouad

Journal of Medicine in Scientific Research

Background A high rate of invasive fungal infection has been demonstrated among critically COVID-19 ill patients admitted to the ICU, with high odds of mortality. Simple and rapid risk stratification methods are mandatory to recognize severe patients. Objectives The aims was to study the prevalence of invasive fungal infection in Corona virus disease 19 (COVID-19) patients, the effect of some inflammatory markers that lead to the development and progression of invasive fungal infection and to assess the value of PCR in early and rapid detection of invasive fungal infection in immune compromised patients with COVID-19. Methods This study was conducted …

Forced Expiratory Volume In The Third Second And Its Derivatives For Diagnosis Of Airway Obstruction In Obese Patients, Manal S. H. El Hussini, Mohamed S. El Hussieny

Journal of Medicine in Scientific Research

Background Spirometry is a simple diagnostic tool for pulmonary diseases, as obstructive pulmonary disorders, especially in obese. Obesity is an increasing worldwide public health concern that contributes to many respiratory problems that affect both large and small airways. The traditional use of forced expiratory volume in the first second (FEV1) and FEV1/forced vital capacity (FVC) in defining large-airflow obstruction may be confined not only by the limitation of FVC maneuver, but also by the long time to reach plateau flow rate in geriatrics and in patients with moderate-to-severe airflow obstruction. FEV3 and its derivatives FEV1/FEV3 and FEV3/FVC are used for …

The Effectiveness Of Chest Physiotherapy On Mechanically Ventilated Neonates With Respiratory Distress Syndrome: A Randomized Control Trial, Abeer E. S. Hamed, Rabab Salah El Din Mohamed

Journal of Medicine in Scientific Research

This study aimed to investigate the effect of chest physiotherapy on mechanically ventilated neonates with respiratory distress syndrome. Thirty neonates were concluded in the study where their age ranged from 1 to 28 days. They were divided into two equal groups. Group A was the control group that received medical treatment and mechanical ventilation. Group B or the study group has received the same treatment and the chest physiotherapy program. The physiotherapy session was conducted daily until the child was weaned off the ventilator. The results showed significant differences in vital signs, blood gases, oxygen saturation, respiratory stay, and hospital …

Foundations Of Intramedullary Femoral Shaft Fracture Fixation: Avoidance, Recognition, And Management Of Common Pitfalls, Christopher Kurnik, Jory Wasserburger, William Curtis, Tyler Chavez

Western Journal of Orthopaedics

Intramedullary nailing is an effective treatment of femoral shaft fractures. However, this procedure has several common complications and technical problems that can interfere with full recovery in some patients. The purpose of this review article is to expand on the literature with the authors’ own experiences to summarize the following common complications of femoral nailing: missed injuries, suboptimal surgical timing, malreduction, reaming errors, implant insertion errors, pain-management problems, and implant removal errors. Strategies are also identified to help avoid and manage these complications.

Regional Research-Practice-Policy Partnerships In Response To Climate-Related Disparities: Promoting Health Equity In The Pacific, Lawrence A. Palinkas, Meaghan O’Donnell, Susan Kemp, Jemaima Tiatia, Yvonette Duque, Michael Spencer, Rupa Basu, Kristine Idda Del Rosario, Kristin Diemer, Bonifacio Doma, David Forbes, Kari Gibson, Joshua Graff-Zivin, Bruce M. Harris, Nicola Hawley, Jill Johnston, Fay Lauraya, Nora Elizabeth F. Maniquiz, Jay Marlowe, Gordon C. Mccord, Imogen Nicholls, Smitha Rao, Angela Kim Saunders, Salvatore Sortino, Benjamin F. Springgate, David Takeuchi, Janette Ugsang, Vivien Villaverde

School of Medicine Faculty Publications

Although climate change poses a threat to health and well-being globally, a regional approach to addressing climate-related health equity may be more suitable, appropriate, and appealing to under-resourced communities and countries. In support of this argument, this commentary describes an approach by a network of researchers, practitioners, and policymakers dedicated to promoting climate-related health equity in Small Island Developing States and low- and middle-income countries in the Pacific. We identify three primary sets of needs related to developing a regional capacity to address physical and mental health disparities through research, training, and assistance in policy and practice implementation: (1) limited …

The Hearst Health Prize: The First Five Years, Alexa M. Waters, Alexis Skoufalos, Emily Frelick, Gregory Dorn, David B. Nash

Department of Family & Community Medicine Faculty Papers

The Hearst Health Prize is the first national annual award for excellence in population health. The prize was established "to discover, support, and showcase the work of an individual, group, organization, or institution that has successfully implemented a population health program or intervention that has made a measurable difference" in health outcomes. Now, 5 years since the award's inception, this article reflects on how submissions for the prize collectively mirror - and may even predict - changes within the field of population health. It examines how the most successful programs demonstrated genuine, measurable improvements in health outcomes and/or health behaviors. …

A Qualitative Exploration Of The Functional, Social, And Emotional Impacts Of The Covid-19 Pandemic On People Who Use Drugs, Erin L Kelly, Megan K Reed, Kathryn M Schoenauer, Kelsey Smith, Kristina Scalia-Jackson, Sequoia Kay Hill, Erica Li, Lara Weinstein

Department of Family & Community Medicine Faculty Papers

Since 2020, people who use drugs (PWUD) experienced heightened risks related to drug supply disruptions, contamination, overdose, social isolation, and increased stress. This study explored how the lives of PWUD changed in Philadelphia over a one-year period. Using semi-structured interviews with 20 participants in a Housing First, low-barrier medication for opioid use (MOUD) program in Philadelphia, the effects of the first year of the COVID-19 pandemic on the daily lives, resources, functioning, substance use, and treatment of PWUD were explored. Interviews were analyzed using a combination of directed and conventional content analysis. Six overarching themes emerged during data analysis: (1) …

Psychometric Properties Of The Urdu Version Of The Eortc Qlq-H&N35 (European Organization For Research And Treatment Of Cancer Head And Neck Module) Quality Of Life Tool, Nida Zahid, Russell Seth Martins, Wajeeha Zahid, Iqbal Azam Syed, Mubasher Ikram, Aneesa Hassan, Shireen Shehzad Bhamani, Adnan Abdul Jabbar, Nargis Asad, Shabbir Akhtar, Moghira Iqbaluddin Siddiqui, Mohammad Sohail Awan, Khabir Ahmad

Department of Surgery Docs

Background: We translated and validated the Urdu version of the European Organization for Research and Treatment of Cancer Quality of Life (QoL) Questionnaire's Head and Neck (H&N) Cancer Module (EORTC QLQ-H&N35) and assessed its convergent and discriminant validity by examining correlations of QoL with depression, anxiety, and resilience.
Methods: We translated the EORTC QLQ-H&N35 according to EORTC instructions. Patients at a tertiary care hospital in Pakistan completed a survey consisting of Urdu versions of EORTC QLQ-C30 (core QoL tool), QLQ-H&N35, Hospital Anxiety and Depression Scale, and Wagnild and Young Resilience Scale (RS-14). Content validity, convergent validity, discriminant validity, and reliability …

Menstrual Irregularities, Hormonal Imbalance And Obesity In Adolescent Girls In Hyderabad, Sindh, Pakistan: An Observational Study, Meharunnissa Khaskheli, Ramsha Zafar Durrani, Shahla Baloch, Aneela Sheeba Baloch, Syed Ghulam Sarwar Shah

Journal of Health Research

Background: Obesity in young girls adversely affects reproductive health later in life and it is a serious public health issue. The objective was to study the association of obesity with menstrual irregularities and hormonal imbalance in teenage and adolescent girls.

Method: Participants comprised a convenience sample of 12-19 years old girls (N=83). The study was conducted in outpatient clinics at a university hospital. Data were collected through medical history by interview, physical examination and blood tests. Data were analysed using frequencies, descriptive statistics, Chi Squared tests of Independence and Binary Logistic Regression.

Results: The median age was 16 years (mean …

Genetic Variants In Aldh1l1 And Gldc Influence The Serine-To-Glycine Ratio In Hispanic Children, Sergey A Krupenko, Shelley A Cole, Ruixue Hou, Karin Haack, Sandra Laston, Nitesh R Mehta, Anthony G Comuzzie, Nancy F Butte, V Saroja Voruganti

Children’s Nutrition Research Center Staff Publications

Background: Glycine is a proteogenic amino acid that is required for numerous metabolic pathways, including purine, creatine, heme, and glutathione biosynthesis. Glycine formation from serine, catalyzed by serine hydroxy methyltransferase, is the major source of this amino acid in humans. Our previous studies in a mouse model have shown a crucial role for the 10-formyltetrahydrofolate dehydrogenase enzyme in serine-to-glycine conversion.

Objectives: We sought to determine the genomic influence on the serine-glycine ratio in 803 Hispanic children from 319 families of the Viva La Familia cohort.

Methods: We performed a genome-wide association analysis for plasma serine, glycine, and the serine-glycine ratio …

The Impact Of Delayed Surgical Care On Patient Outcomes With Alimentary Tract Perforation: Insight From A Low-Middle Income Country, Hasnain Zafar, Taha Ahmad Zaka-Ur-Rehman, Muhammad Sohaib Khan, Shayan Ahmed, Amir Hafeez Shariff

Section of General Surgery

Introduction: In-patient delay is associated with increased mortality in patients with alimentary tract perforations. Access to surgical care is a glaring health issue in low-middle income countries (LMICs), where patient presentation is also delayed for a myriad of reasons, which can be broadly categorized as social/cultural, financial, and structural in their nature. The impact these delays have on surgical outcomes in low-middle income countries is not known.
Methods: A retrospective cohort study of patients who underwent emergency laparotomy for alimentary tract perforation from July 2015 to June 2018 was conducted at a tertiary care hospital in Karachi, Pakistan. Time was …

Association Between Social Vulnerability Index And Cardiovascular Disease: A Behavioral Risk Factor Surveillance System Study, Vardhmaan Jain, Mahmoud Al Rifai, Safi U. Khan, Safi U. Khan, Ankur Kalra, Fatima Rodriguez, Zainab Samad, Yashashwi Pokharel, Arunima Misra, Laurence S. Sperling

Section of Cardiology

Background Social and environmental factors play an important role in the rising health care burden of cardiovascular disease. The Centers for Disease Control and Prevention developed the Social Vulnerability Index (SVI) from US census data as a tool for public health officials to identify communities in need of support in the setting of a hazardous event. SVI (ranging from a least vulnerable score of 0 to a most vulnerable score of 1) ranks communities on 15 social factors including unemployment, minoritized groups status, and disability, and groups them under 4 broad themes: socioeconomic status, housing and transportation, minoritized groups, and …

Association Between Social Vulnerability Index And Cardiovascular Disease: A Behavioral Risk Factor Surveillance System Study, Vardhmaan Jain, Mahmoud Al Rifai, Safi U Khan, Ankur Kalra, Fatima Rodriguez, Zainab Samad, Yashashwi Pokharel, Arunima Misra, Laurence S Sperling, Jamal S Rana, Waqas Ullah, Ankit Medhekar, Salim S Virani

Faculty, Staff and Students Publications

Background Social and environmental factors play an important role in the rising health care burden of cardiovascular disease. The Centers for Disease Control and Prevention developed the Social Vulnerability Index (SVI) from US census data as a tool for public health officials to identify communities in need of support in the setting of a hazardous event. SVI (ranging from a least vulnerable score of 0 to a most vulnerable score of 1) ranks communities on 15 social factors including unemployment, minoritized groups status, and disability, and groups them under 4 broad themes: socioeconomic status, housing and transportation, minoritized groups, and …

Association Between Social Vulnerability Index And Cardiovascular Disease: A Behavioral Risk Factor Surveillance System Study, Vardhmaan Jain, Mahmoud Al Rifai, Safi U Khan, Ankur Kalra, Fatima Rodriguez, Zainab Samad, Yashashwi Pokharel, Arunima Misra, Laurence S Sperling, Jamal S Rana, Waqas Ullah, Ankit Medhekar, Salim S Virani

Division of Cardiology Faculty Papers

Background Social and environmental factors play an important role in the rising health care burden of cardiovascular disease. The Centers for Disease Control and Prevention developed the Social Vulnerability Index (SVI) from US census data as a tool for public health officials to identify communities in need of support in the setting of a hazardous event. SVI (ranging from a least vulnerable score of 0 to a most vulnerable score of 1) ranks communities on 15 social factors including unemployment, minoritized groups status, and disability, and groups them under 4 broad themes: socioeconomic status, housing and transportation, minoritized groups, and …

Quality Improvement: Piloting A Pediatric Obesity Prevention Screening Tool And Intervention In A Family Practice Setting., Erin Shaye Semeyn

Doctor of Nursing Practice Papers

Background: In the United States today, nearly one third of children fall into the category of overweight or obese. Because it is extremely difficult to treat childhood obesity once it occurs, prevention is the optimal approach to childhood overweight and obesity (Brown & Perrin, 2018; Cooper & Mandel, 2020). An ideal time to address obesity prevention health behaviors is during pediatric primary care visits. Since the COVID-19 pandemic began in the United States in 2019, visits to primary care offices, including visits to an urban university-based family practice clinic in Kentucky, dropped as some pediatric patients and their caregivers worried …

Prevalence And Factors Associated With Undernutrition Among Children With Congenital Heart Disease At Three Tertiary Hospitals In Nairobi, Kenya., Shamsa Yahya

Master of Medicine in Paediatrics and Child Health

Background: Congenital heart disease (CHD) is the commonest birth defect. Children with CHD have a high burden of undernutrition and its consequences. Some of the factors that are associated with undernutrition in children with CHD include the type and complexity of the heart defect, associated pulmonary hypertension, late diagnosis, timing of surgical correction, low socioeconomic status, lack of adequate nutritional support, associated genetic conditions and the presence of other clinical comorbidities. Justification: Although these factors are well defined, they vary geographically in their distribution and extent to which they influence the level of undernutrition. This limits the extrapolation of findings …

The Effects Of Covid-19 On Mental Health And Injury Occurrence Of Division Iii College Football Players, Evan Kennaley

Masters Theses/Capstone Projects

Objective: The aim of the study was to investigate if with the lockdown of COVID-19 and the reschedule of the Fall 2020 football season caused an increase in injury in a Division Three College football team.

Methods: A 20 question survey was given to the 2022 Spring Otterbein football team. The survey allowed for self reporting of injuries suffered in the 2019,2020, and 2021 football seasons. The survey also looked to examine if there is any anxiety the players suffered from during the lockdown using the Covid Anxiety Scale.

Results: Of the 63 surveys, it was found that the 2021 …

Longitudinal Reduction In Diversity Of Maternal Gut Microbiota During Pregnancy Is Observed In Multiple Low-Resource Settings: Results From The Women First Trial, Minghua Tang, Nicholas E. Weaver, Daniel N. Frank, Diana Ir, Charles E. Robertson, Jennifer F. Kemp, Jamie Westcott, Kartik Shankar, Sumera Aziz Ali, Sarah Saleem

Community Health Sciences

Objective: To characterize the changes in gut microbiota during pregnancy and determine the effects of nutritional intervention on gut microbiota in women from sub-Saharan Africa (the Democratic Republic of the Congo, DRC), South Asia (India and Pakistan), and Central America (Guatemala).
Methods: Pregnant women in the Women First (WF) Preconception Maternal Nutrition Trial were included in this analysis. Participants were randomized to receive a lipid-based micronutrient supplement either ≥3 months before pregnancy (Arm 1); started the same intervention late in the first trimester (Arm 2); or received no nutrition supplements besides those self-administered or prescribed through local health services (Arm …

A Systematic Review And Meta-Analysis On Prevalence Of And Risk Factors Associated With Depression, Anxiety And Insomnia In Infectious Diseases, Including Covid-19: A Call To Action, Kai Yuan, Yong-Bo Zheng, Yi-Jie Wang, Yan-Kun Sun, Yi-Miao Gong, Yue-Tong Huang, Xuan Chen, Xiao-Xing Liu, Yi Zhong, Si-Zhen Su, Nan Gao, Yi-Long Lu, Zhe Wang, Wei-Jian Liu, Jian-Yu Que, Ying-Bo Yang, An-Yi Zhang, Meng-Ni Jing, Chen-Wei Yuan, Na Zeng, Michael V Vitiello, Vikram Patel, Seena Fazel, Harry Minas, Graham Thornicroft, Teng-Teng Fan, Xiao Lin, Wei Yan, Le Shi, Jie Shi, Thomas Kosten, Yan-Ping Bao, Lin Lu

Children’s Nutrition Research Center Staff Publications

Infectious disease epidemics have become more frequent and more complex during the 21st century, posing a health threat to the general public and leading to psychological symptoms. The current study was designed to investigate the prevalence of and risk factors associated with depression, anxiety and insomnia symptoms during epidemic outbreaks, including COVID-19. We systematically searched the PubMed, Embase, Web of Science, OVID, Medline, Cochrane databases, bioRxiv and medRxiv to identify studies that reported the prevalence of depression, anxiety or insomnia during infectious disease epidemics, up to August 14th, 2020. Prevalence of mental symptoms among different populations including the general public, …

State-Of-The-Art Review: Evidence On Red Meat Consumption And Hypertension Outcomes, Tara Shrout Allen, Harpreet S Bhatia, Alexis C Wood, Shabnam R Momin, Matthew A Allison

Children’s Nutrition Research Center Staff Publications

Hypertension (HTN) is a well-established risk factor for cardiovascular diseases (CVDs), including ischemic heart disease, stroke, heart failure, and atrial fibrillation. The prevalence of HTN, as well as mortality rates attributable to HTN, continue to increase, particularly in the United States and among Black populations. The risk of HTN involves a complex interaction of genetics and modifiable risk factors, including dietary patterns. In this regard, there is accumulating evidence that links dietary intake of red meat with a higher risk of poorly controlled blood pressure and HTN. However, research on this topic contains significant methodological limitations, which are described in …

Use Of Active Video Games With Or Without Videoconferencing On Health Outcomes In Adolescent And Young Adult Cancer Survivors: A Systematic Review, Ursela Christopherson, Stephanie J Wells, Nathan Parker, Elizabeth J Lyons, Michael D Swartz, Anna Blozinski, Karen Basen-Engquist, Susan Peterson, Maria C Swartz

Faculty, Staff and Student Publications

PURPOSE: Adolescent and young adult (AYA) cancer survivors experience greater functional deficits compared to non-cancer peers or older survivors with a similar diagnosis. Physical activity (PA) is a key strategy for mitigating functional decline, and motivation and peer support are critical PA facilitators in AYA cancer survivors. Active video games (AVGs) may be a "gateway" method to promote PA. Further, integrating AVGs into group videoconferencing, a medium used by AYAs to socialize, can capitalize on peer support needed for PA motivation. Thus, we examined the use of AVGs and/or videoconferencing in PA interventions that included AYA survivors and the effect …

Association Of Disease Outcomes With Physical Activity In Multiple Sclerosis: A Cross-Sectional Study, Trinh L T Huynh, Stephanie L Silveira, Brenda Jeng, Robert W Motl

Faculty, Staff and Student Publications

Purpose/Objective Research: This study examined combinations of disease outcomes (i.e., walking, cognition, and symptoms) as correlates of physical activity subgroups (insufficiently active vs. sufficiently active) in persons with multiple sclerosis (MS).

RESEARCH METHOD/DESIGN: This study included 213 participants who completed walking and cognitive function tests and self-report measures of symptoms and physical activity. Multivariate analysis of variance and discriminant function analysis identified combinations of MS outcomes associated with physical activity.

RESULTS: The sample had a mean age of 49.6 years (

CONCLUSION/IMPLICATIONS: The findings identified walking endurance and limitations, processing speed, depression, and fatigue as primary correlates of physical activity …

Associations Between Postpartum Depression And Child Overweight And Obesity: Mediating Effect Of Maternal Feeding Behaviors And Beliefs, Michelle Harrison

Theses and Dissertations (ETD)

Purpose. Postpartum depression (PPD) is a mental condition that significantly affects 10% to 25% of women within the first year after the birth of their child. The mother-infant relationship is key to child growth. Previous studies have shown that PPD has a detrimental effect on children’s physical and psychological well-being as it affects the child through the mother’s parenting behavior. Depressed mothers show a lack of engagement with their children, which could extend to feeding practices influencing weight gain. The prevalence and severity of childhood overweight and obesity is a global public health problem. An increase in weight gain in …

Determinants Of Blood Acylcarnitine Concentrations In Healthy Individuals Of The European Prospective Investigation Into Cancer And Nutrition, Roland Wedekind, Joseph A. Rothwell, Vivian Viallon, Pekka Keski-Rahkonen, Julie A. Schmidt, Veronique Chajes, Vna Katzke, Theron Johnson, Maria Santucci De Magistris, Vittorio Krogh, Pilar Amiano, Carlotta Sacerdote, Daniel Redondo-Sánchez, José María Huerta, Anne Tjønneland, Pratik Pokharel, Paula Jakszyn, Rosario Tumino, Eva Ardanaz, Torkjel M. Sandanger, Anna Winkvist, Johan Hultdin, Matthias B. Schulze, Elisabete Weiderpass, Marc J. Gunter, Inge Huybrechts

Research outputs 2022 to 2026

Background & aims: Circulating levels of acylcarnitines (ACs) have been associated with the risk of various diseases such as cancer and type 2 diabetes. Diet and lifestyle factors have been shown to influence AC concentrations but a better understanding of their biological, lifestyle and metabolic determinants is needed. Methods: Circulating ACs were measured in blood by targeted (15 ACs) and untargeted metabolomics (50 ACs) in 7770 and 395 healthy participants of the European Prospective Investigation into Cancer and Nutrition (EPIC), respectively. Associations with biological and lifestyle characteristics, dietary patterns, self-reported intake of individual foods, estimated intake of carnitine and fatty …

Insulin Resistance In Depression: A Large Meta-Analysis Of Metabolic Parameters And Variation, Brisa S Fernandes, Estela Salagre, Nitesh Enduru, Iria Grande, Eduard Vieta, Zhongming Zhao

Faculty, Staff and Student Publications

Increased insulin resistance is recognized in psychiatric disorders, such as schizophrenia and bipolar disorder, but its occurrence in depression is less clear. Our aims were to verify if insulin resistance is altered in depression, to test the metabolic subgroup hypothesis of depression and if there are changes with antidepressants. Inclusion criteria were studies including adult subjects with depression and either a control group or follow-up after treatment with antidepressants, and assessing fasting insulin or glucose levels or the Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) index. Seventy studies with 240,704 participants were included. Both insulin levels and the HOMA-IR index …

The Geriatric Nutritional Risk Index As A Predictor Of Complications In Geriatric Trauma Patients: Author Reply In Response To: “The Admission Serum Level Of Albumin Cannot Thoroughly Represent The Nutritional Status Of Trauma Patients”, Heather R Kregel, Patrick B Murphy, Mina Attia, David E Meyer, Rachel S Morris, Ezenwa C Onyema, Sasha D Adams, Charles E Wade, John A Harvin, Lillian S Kao, Thaddeus J Puzio

Faculty, Staff and Student Publications

BACKGROUND: Malnutrition is associated with increased morbidity and mortality after trauma. The Geriatric Nutritional Risk Index (GNRI) is a validated scoring system used to predict the risk of complications related to malnutrition in nontrauma patients. We hypothesized that GNRI is predictive of worse outcomes in geriatric trauma patients.

METHODS: This was a single-center retrospective study of trauma patients 65 years or older admitted in 2019. Geriatric Nutritional Risk Index was calculated based on admission albumin level and ratio of actual body weight to ideal body weight. Groups were defined as major risk (GNRI98). The primary outcome was mortality. Secondary outcomes …

Strategy For Generating Blinded Evidence For Single-Arm Trials With External Controls Using Expert Review Of Home Video, Bharti Manwani, Carson Finger, Lynda Lisabeth

Faculty, Staff and Student Publications

Stroke risk and prevalence increase with advanced age and women tend to be older than men at the time of their first stroke. Advanced age in women confers unique stroke risks that are beyond reproductive factors. Previous reviews and guidelines have largely focused on risk factors specific to women, with a predominant focus on reproductive factors and, therefore, younger to middle-aged women. This review aims to specifically describe stroke risk factors in elderly women, the population of women where the majority of strokes occur, with a focus on atrial fibrillation, hormone therapy, psychosocial risk factors, and cognitive impairment. Our review …

The Intricate Interplay Between Cancer Stem Cells And Cell-Of-Origin Of Cancer: Implications For Therapeutic Strategies, Luis Alberto Vega, Misu A Sanson, María Belén Cubria, Shrijana Regmi, Brittany J Shah, Samuel A Shelburne, Anthony R Flores

Faculty, Staff and Student Publications

Antimicrobial resistance-encoding mobile genetic elements (MGEs) may contribute to the disease potential of bacterial pathogens. We previously described the association of Group A Streptococcus (GAS) derived from invasive disease with increasingly frequent antimicrobial resistance (AMR). We hypothesized that a 65-kb AMR-encoding MGE (ICESpyM92), highly conserved among closely related emergent invasive emm92 GAS, contributes to GAS disease potential. Here, we provide evidence that a combination of ICESpyM92- and core genome-dependent differential gene expression (DGE) contributes to invasive disease phenotypes of emergent emm92 GAS. Using isogenic ICESpyM92 mutants generated in distinct emm92 genomic backgrounds, we determined the presence of ICESpyM92 enhances GAS …

Adipose Tissue-Specific Ablation Of Ces1d Causes Metabolic Dysregulation In Mice, Gang Li, Xin Li, Li Yang, Shuyue Wang, Yulin Dai, Baharan Fekry, Lucas Veillon, Lin Tan, Rebecca Berdeaux, Kristin Eckel-Mahan, Philip L Lorenzi, Zhongming Zhao, Richard Lehner, Kai Sun

Faculty, Staff and Student Publications

Carboxylesterase 1d (Ces1d) is a crucial enzyme with a wide range of activities in multiple tissues. It has been reported to localize predominantly in ER. Here, we found that Ces1d levels are significantly increased in obese patients with type 2 diabetes. Intriguingly, a high level of Ces1d translocates onto lipid droplets where it digests the lipids to produce a unique set of fatty acids. We further revealed that adipose tissue-specific Ces1d knock-out (FKO) mice gained more body weight with increased fat mass during a high fat-diet challenge. The FKO mice exhibited impaired glucose and lipid metabolism and developed exacerbated liver …

Preventing Cholesterol-Induced Perk (Protein Kinase Rna-Like Endoplasmic Reticulum Kinase) Signaling In Smooth Muscle Cells Blocks Atherosclerotic Plaque Formation, Abhijnan Chattopadhyay, Pujun Guan, Suravi Majumder, Kaveeta Kaw, Zhen Zhou, Chen Zhang, Siddharth K Prakash, Anita Kaw, L Maximillian Buja, Callie S Kwartler, Dianna M Milewicz

Faculty, Staff and Student Publications

BACKGROUND: Vascular smooth muscle cells (SMCs) undergo complex phenotypic modulation with atherosclerotic plaque formation in hyperlipidemic mice, which is characterized by de-differentiation and heterogeneous increases in the expression of macrophage, fibroblast, osteogenic, and stem cell markers. An increase of cellular cholesterol in SMCs triggers similar phenotypic changes in vitro with exposure to free cholesterol due to cholesterol entering the endoplasmic reticulum, triggering endoplasmic reticulum stress and activating Perk (protein kinase RNA-like endoplasmic reticulum kinase) signaling.

METHODS: We generated an SMC-specific

RESULTS: SMC-specific deletion of Perk reduces atherosclerotic plaque formation in male hyperlipidemic mice by 80%. Single-cell transcriptomic data identify 2 …