Digital Commons Network^™

Decomposing Differences In Coronavirus Disease 2019-Related Case-Fatality Rates Across Seventeen Nations, Ashley Wendell Kranjac, Dinko Kranjac

Sociology Faculty Articles and Research

As of 1 November 2020, estimated case-fatality rates associated with coronavirus disease 2019 are not uniformly patterned across the world and differ substantially in magnitude. Given the global spatial heterogeneity in case-fatality rates, we applied the Blinder-Oaxaca regression decomposition technique to identify how putative sociodemographic, structural, and environmental sources influence variation in case-fatality rates. We show that compositional and associational differences in country-level risk factors explain a substantial proportion of the coronavirus disease 2019-related case-fatality rate gap across nations. Asian countries fair better vis-à-vis case-fatality rate differences mainly due to variation in returns to sociodemographic, structural, and environmental sources among …

Modeling Action Potential Reversals In Tunicate Hearts, John W. Cain, Luran He, Lindsay D. Waldrop

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Tunicates are small invertebrates which possess a unique ability to reverse flow in their hearts. Scientists have debated various theories regarding how and why flow reversals occur. Here we explore the electrophysiological basis for reversals by simulating action potential propagation in an idealized model of the tubelike tunicate heart. Using asymptotic formulas for action potential duration and conduction velocity, we propose tunicate-specific parameters for a two-current ionic model of the action potential. Then, using a kinematic model, we derive analytical criteria for reversals to occur. These criteria inform subsequent numerical simulations of action potential propagation in a fiber paced at …

Maternal Prenatal Cortisol Programs The Infant Hypothalamic–Pituitary–Adrenal Axis, Jessica L. Irwin, Amy L. Meyering, Gage Peterson, Laura M. Glynn, Curt A. Sandman, Laurel M. Hicks, Elysia Poggi Davis

Psychology Faculty Articles and Research

One of the key proposed agents of fetal programming is exposure to maternal glucocorticoids. Experimental animal studies provide evidence that prenatal exposure to elevated maternal glucocorticoids has consequences for hypothalamic–pituitary–adrenal (HPA) axis functioning in the offspring. There are very few direct tests of maternal glucocorticoids, such as cortisol, during human pregnancy and associations with infant cortisol reactivity. The current study examined the link between maternal prenatal cortisol trajectories and infant cortisol reactivity to the pain of inoculation in a sample of 152 mother-infant (47.4% girls) pairs. The results from the current study provide insight into fetal programming of the infant …

Difficult Turned Easy: Suggestion Renders A Challenging Visual Task Simple, Mathieu Landry, Jason Da Silva Castanheira, Jérôme Sackur, Amir Raz

Psychology Faculty Articles and Research

Suggestions can cause some individuals to miss or disregard existing visual stimuli, but can they infuse sensory input with nonexistent information? Although several prominent theories of hypnotic suggestion propose that mental imagery can change our perceptual experience, data to support this stance remain sparse. The present study addressed this lacuna, showing how suggesting the presence of physically absent, yet critical, visual information transforms an otherwise difficult task into an easy one. Here, we show how adult participants who are highly susceptible to hypnotic suggestion successfully hallucinated visual occluders on top of moving objects. Our findings support the idea that, at …

The Physiological Interaction Of Sleep Deprivation And Zoledronate On Distal Femur Trabecular Thickness Of Ovariectomized Rats, Erin Nolte, Frank Frisch, Oliver Lopez

Health Sciences and Kinesiology Faculty Articles

Osteoporosis, a disease resulting in an increased risk of fracture due to compromised bone, affects 1 in 3 postmenopausal women. Discontinuities in the microarchitecture of bone, such as trabeculae, are seen in postmenopausal osteoporosis. This study aimed to evaluate how sleep deprivation affects the distal femur trabecular thickness of estrogen-deficient rats treated with Zoledronate. 29 ovariectomized Wistar female rats were separated into 4 groups. The control group (C) was housed in standard housing with a 12-hour light/dark cycle and was given an intravenous injection of 0.45 mL of 0.9% saline. The Zoledronate group (Z) were also housed in standard conditions …

Structural Characterization And In Vitro Lipid Binding Studies Of Non-Specific Lipid Transfer Protein 1 (Nsltp1) From Fennel (Foeniculum Vulgare) Seeds, Mekdes Megeressa, Bushra Siraj, Shamshad Zarina, Aftab Ahmed

Pharmacy Faculty Articles and Research

Non-specific lipid transfer proteins (nsLTPs) are cationic proteins involved in intracellular lipid shuttling in growth and reproduction, as well as in defense against pathogenic microbes. Even though the primary and spatial structures of some nsLTPs from different plants indicate their similar features, they exhibit distinct lipid-binding specificities signifying their various biological roles that dictate further structural study. The present study determined the complete amino acid sequence, in silico 3D structure modeling, and the antiproliferative activity of nsLTP1 from fennel (Foeniculum vulgare) seeds. Fennel is a member of the family Umbelliferae (Apiaceae) native to southern Europe and the Mediterranean …

Molecular Virology Of Kshv In The Lymphocyte Compartment—Insights From Patient Samples And De Novo Infection Models, Farizeh Aalam, Jennifer Totonchy

Pharmacy Faculty Articles and Research

The incidence of Kaposi’s sarcoma-associated herpesvirus (KSHV)-associated Kaposi Sarcoma has declined precipitously in the present era of effective HIV treatment. However, KSHV-associated lymphoproliferative disorders although rare, have not seen a similar decline. Lymphoma is now a leading cause of death in people living with HIV (PLWH), indicating that the immune reconstitution provided by antiretroviral therapy is not sufficient to fully correct the lymphomagenic immune dysregulation perpetrated by HIV infection. As such, novel insights into the mechanisms of KSHV-mediated pathogenesis in the immune compartment are urgently needed in order to develop novel therapeutics aimed at prevention and treatment of KSHV-associated lymphoproliferations. …

Effects Of Goal Type And Reinforcement Type On Self-Reported Domain-Specific Walking Among Inactive Adults: 2×2 Factorial Randomized Controlled Trial, Mindy L. Mcentee, Alison Cantley, Emily Foreman, Vincent Berardi, Christine B. Phillips, Jane C. Hurley, Melbourne F. Hovell, Steven Hooker, Marc A. Adams

Psychology Faculty Articles and Research

Background: WalkIT Arizona was a 2×2 factorial trial examining the effects of goal type (adaptive versus static) and reinforcement type (immediate versus delayed) to increase moderate to vigorous physical activity (MVPA) among insufficiently active adults. The 12-month intervention combined mobile health (mHealth) technology with behavioral strategies to test scalable population-health approaches to increasing MVPA. Self-reported physical activity provided domain-specific information to help contextualize the intervention effects.

Objective: The aim of this study was to report on the secondary outcomes of self-reported walking for transportation and leisure over the course of the 12-month WalkIT intervention.

Methods: A total of …

Exploring Optimism And Purpose In Life As Mediators Of The Association Between Childhood Socioeconomic Status And Common Cold Susceptibility, Stephanie Munduruca, Vivian Luong, Brooke N. Jenkins

Student Scholar Symposium Abstracts and Posters

According to the U.S. National Library of Medicine, Americans suffer from 1 billion colds a year. Correspondingly, previous research has shown that lower socioeconomic status (SES) during childhood is associated with lower adult health, including decreased resistance to the common cold. This correlation between childhood SES and common cold susceptibility may be mediated by an individual's optimism and purpose in life. Of interest, several studies have found evidence that higher childhood SES is associated with a higher purpose of life and higher optimism. Furthermore, previous evidence has confirmed that higher optimism and higher purpose of life are linked to better …

Child Postoperative Pain: Impact Of Child Temperament And Parent Mood On Pain After Surgery, Harshitha V. Venkatesh, Michelle A. Fortier, Zeev N. Kain, Brooke N. Jenkins

Student Scholar Symposium Abstracts and Posters

Around 80% of children who undergo surgery experience moderate to severe postoperative pain. Various psychosocial factors contribute to exacerbations of this pain. A child’s inborn personality traits and style of interaction with the environment are known as temperament. Children who are less sociable and more distress-prone (e.g., those who cry, throw tantrums) are more likely to have an anxious temperament. This anxiety before and after surgery may lead to an increase in postoperative pain levels as well. Parent pain ratings do not always reflect true child pain. Overtime, a parent’s emotional state and mood may change how they perceive child …

Perturbing The Sense Of Agency, Maiia Tolia-Shah, Brenda Gutierrez, Sook Mun (Alice) Wong, Uri Maoz

Student Scholar Symposium Abstracts and Posters

The goal of this experiment is to test a model of the sense of agency, intention, volition, and causality in order to examine the time course of the sense of agency associated with voluntary and involuntary movements. We examine the roles of context, expectation, and sensory feedback in the feeling of agency as well as examining the aspects of volition in different kinds of decisions. This experiment is thought to be very novel as it stimulates an internal signal for movement from an external source which is why the participant can find it hard to decipher if they are fully …

Pediatric Asthma And Psychological Resilience: Examining Whether Family Functioning And Social Support Relate To Asthma Symptoms And Lung Function, Dalia Jaafar, Natasha H. Hikita, Pornchai Tirakitsoontorn, Azucena Talamantes, Anchalee Yuengsrigul, Eric Sternlicht, Brooke N. Jenkins

Student Scholar Symposium Abstracts and Posters

Upwards of 6 million children in the United States are afflicted with pediatric asthma. While previous research has linked asthma to multiple contributing biological and environmental factors, recent research suggests that psychological and social factors may have an impact on physiological outcomes of asthma like lung function and lung inflammation. Therefore, we suggest the need to study the impact of positive psychological factors such as a well-functioning family environment and beneficial social support on symptoms and lung function of children diagnosed with asthma. In the present pilot study, we recruited a total of 15 children with a confirmed asthma diagnosis …

An Update Of The Virion Proteome Of Kaposi Sarcoma-Associated Herpesvirus, Ramina Nabiee, Basir Syed, Jesus Ramirez Castano, Rukhsana Lalani, Jennifer Totonchy

Pharmacy Faculty Articles and Research

The virion proteins of Kaposi sarcoma-associated herpesvirus (KSHV) were initially characterized in 2005 in two separate studies that combined the detection of 24 viral proteins and a few cellular components via LC-MS/MS or MALDI-TOF. Despite considerable advances in the sensitivity and specificity of mass spectrometry instrumentation in recent years, leading to significantly higher yields in detections, the KSHV virion proteome has not been revisited. In this study, we have re-examined the protein composition of purified KSHV virions via ultra-high resolution Qq time-of-flight mass spectrometry (UHR-QqTOF). Our results confirm the detection of all previously reported virion proteins, in addition to 17 …

Smart Homes For Smart Health: Developing An Interactive System To Reduce In-Home Secondhand Smoke, Christie Kika, Janice Han, Vincent Berardi

Student Scholar Symposium Abstracts and Posters

Smoke from any source is potentially harmful because it contains fine particulate matter that is associated with acute and chronic conditions. Second-hand smoke (SHS) is particularly unsafe for children due to biological characteristics (higher breathing rates, immature lungs and underdeveloped immune systems) that make it difficult to filter toxins.To address this concern, we recently completed Project Fresh Air (PFA), an NIH-funded R01 intervention that installed air particle sensors in the households of tobacco smokers who lived with children. The purpose of our research is to investigate and develop efficient smart home devices that monitor SHS in various living spaces to …

Covid-19 Viral Testing Disparities In Los Angeles City, Laura Cyphers

Student Scholar Symposium Abstracts and Posters

Hispanic and Black communities have been disproportionately impacted by COVID-19-related morbidity and mortality (California Department of Public Health, 2020). Inequitable access to viral testing resources may have exacerbated these COVID-19-related racial and ethnic health disparities. For example, reports from the Los Angeles Department of Public Health revealed glaring viral testing disparities in April 2020 (early pandemic), with predominantly White communities in Los Angeles County receiving 65% more tests than Hispanic and Black communities. In response, California statewide testing was expanded for communities of color (Vann et al., 2020). To investigate access to viral testing in Los Angeles City, the current …

Interactive Sonification To Assist Children With Autism During Motor Therapeutic Interventions, Franceli L. Cibrian, Judith Ley-Flores, Joseph W. Newbold, Aneesha Singh, Nadia Bianchi-Berthouze, Monica Tentori

Engineering Faculty Articles and Research

Interactive sonification is an effective tool used to guide individuals when practicing movements. Little research has shown the use of interactive sonification in supporting motor therapeutic interventions for children with autism who exhibit motor impairments. The goal of this research is to study if children with autism understand the use of interactive sonification during motor therapeutic interventions, its potential impact of interactive sonification in the development of motor skills in children with autism, and the feasibility of using it in specialized schools for children with autism. We conducted two deployment studies in Mexico using Go-with-the-Flow, a framework to sonify movements …

Regiospecific Synthesis Of Calcium‐Independent Daptomycin Antibiotics Using A Chemoenzymatic Method, Nagaraju Mupparapu, Yu-Hsin Cindy Lin, Tae Ho Kim, Sherif I. Elshahawi

Pharmacy Faculty Articles and Research

Daptomycin (DAP) is a calcium (Ca2+)‐dependent FDA‐approved antibiotic drug for the treatment of Gram‐positive infections. It possesses a complex pharmacophore hampering derivatization and/or synthesis of analogs. In order to mimic the Ca2+‐binding effect we uses a chemoenzymatic approach to modify the tryptophan (Trp) residue of DAP and synthesize kinetically characterized and structurally elucidated regiospecific Trp‐modified DAP analogs. We demonstrated that the modified DAPs are several‐folds active than the parent molecule against antibiotic‐susceptible and antibiotic‐resistant Gram‐positive bacteria. Strikingly and in contrast to the parent molecule, the DAP derivatives do not rely on calcium or any additional elements for activity.

Diagnosing And Managing Post-Stroke Aphasia, Shannon M. Sheppard, Rajani Sebastian

Communication Sciences and Disorders Faculty Articles and Research

Introduction: Aphasia is a debilitating language disorder and even mild forms of aphasia can negatively affect functional outcomes, mood, quality of life, social participation, and the ability to return to work. Language deficits after post-stroke aphasia are heterogeneous.

Areas covered: The first part of this manuscript reviews the traditional syndrome-based classification approach as well as recent advances in aphasia classification that incorporate automatic speech recognition for aphasia classification. The second part of this manuscript reviews the behavioral approaches to aphasia treatment and recent advances such as noninvasive brain stimulation techniques and pharmacotherapy options to augment the effectiveness of …

Seroprevalence Of Novel Coronavirus Sars-Cov-2 At A Community Hospital Emergency Department And Outpatient Laboratory In Northern Orange County, California, Jason Yamaki, Harry Peled, Sajen Mathews, David Park, Mina Firoozi, Kim Smith, Lee Nguyen

Pharmacy Faculty Articles and Research

Introduction

The severe acute respiratory syndrome related coronavirus 2 (SARS-CoV-2) has infected more than 20 million people worldwide, and the spread is most prevalent in the USA, where California had accounted over 240,000 cases in the initial 5 months of the pandemic. To estimate the number of infected persons in our community, we conducted a cross-sectional study to estimate seroprevalence of SARS-CoV-2 infection.

Methods

This cross-sectional study evaluated the presence of immunoglobulin G, antibody for SARS-CoV-2 during the time period of July 15, 2020, to July 27, 2020. Testing was done on serum samples from patients who had visited affiliated …

Effects Of Visual Referencing On Backward And Forward Treadmill Walking In Vr Environments, Rahul Soangra, Sivakumar Rajagopal

Physical Therapy Faculty Articles and Research

Backward walking is used increasingly as a rehabilitation exercise for stroke and diabetic peripheral neuropathy patients to improve strength and balance. However, it is unclear how visual referencing affects backward and forward walking. In this study, we evaluated spatiotemporal gait characteristics changes due to visual referencing while backward/forward walking. Sixteen healthy young participants were recruited in this study. All participants walked for 2 min with and without visual referencing in the virtual reality environment. While walking backward participants faced the virtual reality screen similar to forward walking, but their treadmill belt direction of movement was reversed. All participants walked at …

Air Pollution And The Dynamic Association Between Depressive Symptoms And Memory In Oldest-Old Women, Andrew J. Petkus, Diana Younan, Xinhui Wang, Daniel P. Beavers, Mark A. Espeland, Margaret Gatz, Tara Gruenewald, Joel D. Kaufman, Helena C. Chui, Joann E. Manson, Susan M. Resnick, Gregory A. Wellenius, Eric A. Whitsel, Keith Widaman, Jiu-Chiuan Chen

Psychology Faculty Articles and Research

BACKGROUND/OBJECTIVES

Exposure to air pollution may contribute to both increasing depressive symptoms and decreasing episodic memory in older adulthood, but few studies have examined this hypothesis in a longitudinal context. Accordingly, we examined the association between air pollution and changes in depressive symptoms (DS) and episodic memory (EM) and their interrelationship in oldest-old (aged 80 and older) women.

DESIGN

Prospective cohort data from the Women's Health Initiative Memory Study-Epidemiology of Cognitive Health Outcomes.

SETTING

Geographically diverse community-dwelling population.

PARTICIPANTS

A total of 1,583 dementia-free women aged 80 and older.

MEASUREMENTS

Women completed up to six annual memory assessments (latent composite …

The Impact Of Parental Health Mindset On Postoperative Recovery In Children, Alexandra Kain, Claudia Mueller, Brenda J. Goliamu, Brooke N. Jenkins, Michelle A. Fortier

Psychology Faculty Articles and Research

Background

Mindset, or one’s beliefs about the ability to change one’s outcomes, has been studied in the educational domain but not in surgical settings. The purpose of this study was to examine the role of parental health mindset on children’s recovery.

Methods

Participants were part of a larger National Institutes of Health‐funded trial that included 1470 children undergoing outpatient tonsillectomy and adenoidectomy. We used measures of parental coping style (Monitor Blunter Style Scale; MBSS) and medication attitudes (Medication Attitudes Questionnaire; MAQ) to validate the Health Beliefs Scale (HBS; Criterion validity, Cohen’s kappa). HBS categorizes parents as having a growth mindset, …

Proposing A New Algorithm For Premanipulative Testing In Physical Therapy Practice, Brent Harper, Daniel Miner, Harrison Vaughan

Physical Therapy Faculty Articles and Research

In the field of physical therapy, there is debate as to the clinical utility of premanipulative vascular assessments. Cervical artery dysfunction (CAD) risk assessment involves a multi-system approach to differentiate between spontaneous versus mechanical events. The purposes of this inductive analysis of the literature are to discuss the link between cervical spine manipulation (CSM) and CAD, to examine the literature on premanipulative vascular tests, and to suggest an optimal sequence of premanipulative testing based on the differentiation of a spontaneous versus mechanical vascular event. Knowing what premanipulative vascular tests assess and the associated clinical application facilitates an evidence-informed decision for …

Using Participatory Mapping To Diagnose Upstream Determinants Of Health And Prescribe Downstream Policy-Based Interventions, Jason A. Douglas, Andrew M. Subica, Laresha Franks, Gilbert Johnson, Carlos Leon, Sandra Villanueva, Cheryl T. Grills

Health Sciences and Kinesiology Faculty Articles

Participatory mapping is a powerful methodology for working with community residents to examine social and environmental determinants of public health disparities. However, this empowering methodology has only been applied sparingly in public health research and practice, with limited examples in the literature. To address this literature gap, we 1) review participatory mapping approaches that may be applied to exploring place-based factors that affect community health, and 2) present a mixed-methods participatory geographic information systems (PGIS) examination of neighborhood assets (eg, streetlights) and challenges (eg, spaces of crime and violence) related to access to public parks in South Los Angeles, California. …

Coevolution, Dynamics And Allostery Conspire In Shaping Cooperative Binding And Signal Transmission Of The Sars-Cov-2 Spike Protein With Human Angiotensin-Converting Enzyme 2, Gennady M. Verkhivker

Mathematics, Physics, and Computer Science Faculty Articles and Research

Binding to the host receptor is a critical initial step for the coronavirus SARS-CoV-2 spike protein to enter into target cells and trigger virus transmission. A detailed dynamic and energetic view of the binding mechanisms underlying virus entry is not fully understood and the consensus around the molecular origins behind binding preferences of SARS-CoV-2 for binding with the angiotensin-converting enzyme 2 (ACE2) host receptor is yet to be established. In this work, we performed a comprehensive computational investigation in which sequence analysis and modeling of coevolutionary networks are combined with atomistic molecular simulations and comparative binding free energy analysis of …

Heavy Is The Head That Wears The Crown: Black Men’S Perspective On Harmful Effects Of Hair Product Use And Breast Cancer Risk, Dede K. Teteh, Marissa Chan, Bing Turner, Brian Hedgeman, Marissa Ericson, Phyllis Clark, Eudora Mitchell, Emily Barrett, Adana Llanos, Rick Kittles, Susanne Montgomery

Health Sciences and Kinesiology Faculty Articles

Racial disparities in breast cancer are well-documented, and Black women assume a disproportionate burden of breast cancer mortality. Black women also commonly use hair products containing endocrine disrupting chemicals (EDCs) more often at an increased rate, as compared to other racial/ethnic groups. Emerging findings have reported the use of hair and other personal care products containing EDCs may contribute to breast cancer risk. While some sociocultural perspectives about hair and identity have been explored, the role of beauty expectations upheld by males has not been studied. Through a community-based participatory methodology, we explored perceptions and beliefs held by Black men …

Characterizing Prenatal Maternal Distress With Unique Prenatal Cortisol Trajectories, Gage Peterson, Emma V. Espel, Elyssia Poggi Davis, Curt A. Sandman, Laura M. Glynn

Psychology Faculty Articles and Research

Objective: It is widely assumed that glucocorticoids represent a primary mechanism through which exposure to adversity and maternal psychological distress shape prenatal developmental trajectories of both mother and fetus. However, despite repeated investigations and the fact that prenatal cortisol has been reliably linked to developmental outcomes, the empirical evidence supporting an association between prenatal cortisol and maternal distress is scarce. In this study, a novel approach to assessing links between maternal prenatal psychological distress and gestational cortisol profiles, general growth mixture modeling (GGMM), was applied. Method: Measures of pregnancy anxiety, perceived stress, and state anxiety and depressive symptoms as well …

The Inclusion Of Health Data Standards In The Implementation Of Pharmacogenomics Systems: A Scoping Review, Don Roosan, Angela Hwang, Anandi V. Law, Jay Chok, Moom Roosan

Pharmacy Faculty Articles and Research

Background: Despite potential benefits, the practice of incorporating pharmacogenomics (PGx) results in clinical decisions has yet to diffusewidely. In this study,we conducted a review of recent discussions on data standards and interoperability with a focus on sharing PGx test results among health systems. Materials & methods:We conducted a literature search for PGx clinical decision support systems between 1 January 2012 and 31 January 2020. Thirty-two out of 727 articles were included for the final review. Results: Nine of the 32 articles mentioned data standards and only four of the 32 articles provided solutions for the lack of …

Gains Across Who Dimensions Of Function After Robot-Based Therapy In Stroke Subjects, Jennifer Wu, Lucy Dodakian, Jill See, Erin Burke Quinlan, Lisa Meng, Jeby Abraham, Ellen C. Wong, Vu Le, Alison Mckenzie, Steven C. Cramer

Physical Therapy Faculty Articles and Research

Background

Studies examining the effects of therapeutic interventions after stroke often focus on changes in loss of body function/structure (impairment). However, improvements in activities limitations and participation restriction are often higher patient priorities, and the relationship that these measures have with loss of body function/structure is unclear.

Objective

This study measured gains across WHO International Classification of Function (ICF) dimensions and examined their interrelationships.

Methods

Subjects were recruited 11 to 26 weeks after hemiparetic stroke. Over a 3-week period, subjects received 12 sessions of intensive robot-based therapy targeting the distal arm. Each subject was assessed at baseline and at 1 …

Analysis Of Kshv B Lymphocyte Lineage Tropism In Human Tonsil Reveals Efficient Infection Of Cd138+ Plasma Cells, Farizeh Aalam, Ramina Nabiee, Jesus Ramirez Castano, Jennifer Totonchy

Pharmacy Faculty Articles and Research

Despite 25 years of research, the basic virology of Kaposi Sarcoma Herpesviruses (KSHV) in B lymphocytes remains poorly understood. This study seeks to fill critical gaps in our understanding by characterizing the B lymphocyte lineage-specific tropism of KSHV. Here, we use lymphocytes derived from 40 human tonsil specimens to determine the B lymphocyte lineages targeted by KSHV early during de novo infection in our ex vivo model system. We characterize the immunological diversity of our tonsil specimens and determine that overall susceptibility of tonsil lymphocytes to KSHV infection varies substantially between donors. We demonstrate that a variety of B lymphocyte …