Medicine and Health Sciences Commons^™

Spatial Relationship Between Bone Formation And Mechanical Stimulus Within Cortical Bone: Combining 3d Fluorochrome Mapping And Poroelastic Finite Element Modelling, Alessandra Carriero, A. F. Pereira, A. J. Wilson, S. Castagno, B. Javaheri, A. A. Pitsillides, M. Marenzana, S. J. Shefelbine

Publications and Research

Bone is a dynamic tissue and adapts its architecture in response to biological and mechanical factors. Here we investigate how cortical bone formation is spatially controlled by the local mechanical environment in the murine tibia axial loading model (C57BL/6). We obtained 3D locations of new bone formation by performing ‘slice and view’3D fluorochrome mapping of the entire bone and compared these sites with the regions of high fluid velocity or strain energy density estimated using a finite element model, validated with ex-vivo bone surface strain map acquired ex-vivo using digital image correlation. For the comparison, 2D maps of the average …

To Do Or Not To Do: Dopamine, Affordability And The Economics Of Opportunity, Jeff A. Beeler, Devry Mourra

Publications and Research

Five years ago, we introduced the thrift hypothesis of dopamine (DA), suggesting that the primary role of DA in adaptive behavior is regulating behavioral energy expenditure to match the prevailing economic conditions of the environment. Here we elaborate that hypothesis with several new ideas. First, we introduce the concept of affordability, suggesting that costs must necessarily be evaluated with respect to the availability of resources to the organism, which computes a value not only for the potential reward opportunity, but also the value of resources expended. Placing both costs and benefits within the context of the larger economy in which …

The Impact Of Nursing Students On The Health-Related Quality Of Life And Perceived Social Support Of A Rural Population In Ecuador: Effects Of A Service-Based Learning Course, Rebecca L. Walcott, Angela M. Murcia, Gloria M. Berry, Christian F. Juna, María Isabel Roldós

Publications and Research

Background: Students seeking degrees in healthcare in Ecuador participate in community improvement projects and provide free health services under the supervision of faculty health professionals. The aim of this study is to determine the impact of a community-based intervention delivered by nursing students on health-related quality of life (HRQoL) and perceived social support of a rural population in Ecuador.

Methods: A quasi-experimental non-equivalent control group design study was conducted in two rural communities in Tumbaco, Ecuador. Families from one rural community were invited to participate in the intervention, receiving 8 weekly home visits from nursing students. Families from a neighboring …

The Candida Albicans Stress Response Gene Stomatin-Like Protein 3 Is Implicated In Ros-Induced Apoptotic-Like Death Of Yeast Phase Cells, Karen A. Conrad, Ronald Rodriguez, Eugenia C. Salcedo, Jason M. Rauceo

Publications and Research

The ubiquitous presence of SPFH (Stomatin, Prohibitin, Flotillin, HflK/HflC) proteins in all domains of life suggests that their function would be conserved. However, SPFH functions are diverse with organism-specific attributes. SPFH proteins play critical roles in physiological processes such as mechanosensation and respiration. Here, we characterize the stomatin ORF19.7296/SLP3 in the opportunistic human pathogen Candida albicans. Consistent with the localization of stomatin proteins, a Slp3p-Yfp fusion protein formed visible puncta along the plasma membrane. We also visualized Slp3p within the vacuolar lumen. Slp3p primary sequence analyses identified four putative S-palmitoylation sites, which may facilitate membrane localization and are conserved features …

Chronic Voluntary Oral Methamphetamine Induces Deficits In Spatial Learning And Hippocampal Protein Kinase Mzeta With Enhanced Astrogliosis And Cyclooxygenase-2 Levels, Jorge A. Avila, Roseanna M. Zanca, Denis Shor, Nicholas Paleologos, Amber A. Alliger, Maria E. Figueiredo-Pereira, Peter A. Serrano

Publications and Research

Methamphetamine (MA) is an addictive drug with neurotoxic effects on the brain producing cognitive impairment and increasing the risk for neurodegenerative disease. Research has focused largely on examining the neurochemical and behavioral deficits induced by injecting relatively high doses of MA [30 mg/kg of body weight (bw)] identifying the upper limits of MA-induced neurotoxicity. Accordingly, we have developed an appetitive mouse model of voluntary oral MA administration (VOMA) based on the consumption of a palatable sweetened oatmeal mash containing a known amount of MA. This VOMA model is useful for determining the lower limits necessary to produce neurotoxicity in the …

Disconnect Between Genes Associated With Ischemic Heart Disease And Targets Of Ischemic Heart Disease Treatments, C Mary Schooling, J. V. Huang, J. V. Zhao, M.K. Kwok, S. L. Au Yeung, S. L. Lin

Publications and Research

Background: Development of pharmacological treatments to mitigate ischemic heart disease (IHD) has encompassed disappointing results and expensive failures, which has discouraged investment in new approaches to prevention and control.Newtreatments aremost likely to be successful if they act on genetically validated targets. We assessed whether existing pharmacological treatments for IHD reduction are acting on genetically validated targets and whether all such targets for IHD are currently being exploited. Methods: Genes associatedwith IHDwere obtained fromthe loci of single nucleotide polymorphisms reported in either of two recent genome wide association studies supplemented by a gene-based analysis (accounting for linkage disequilibrium) of CARDIoGRAMplusC4D 1000 …

Evaluating The Dietary And Nutritional Apps In The Google Play Store, Harleigh Schumer, Chioma Amadi, Ashish Joshi

Publications and Research

Objectives: The objective of this study was to evaluate the features of diet and nutrition apps available in the Google Play Store.

Methods: A search was conducted in August 2017 using the Google Play Store database to identify apps related to diet and nutrition. Terms entered into the app search engine included ‘diet apps’ and ‘nutrition apps’. The first 50 apps resulting from each search term was assessed. Duplicates were removed, and a comparative analysis was performed on the remaining diet and nutrition apps.

Results: A total of 86 diet and nutrition apps were identified. One hundred percent (n = …

A Multi-Functional View Of Moral Disengagement: Exploring The Effects Of Learning The Consequences, C. Justice Tillman, Katerina Gonzalez, Marilyn V. Whitman, Wayne S. Crawford, Anthony C. Hood

Publications and Research

This paper takes us beyond the unethical act and explores the use of moral disengagement as a multi-stage, multi-functional regulatory, and coping mechanism that not only allows individuals to engage in unethical behavior, but also manage the negative emotions (i.e., guilt and shame) from learning the consequences of such behavior. A resource-based lens is applied to the moral disengagement process, suggesting that individuals not only morally disengage prior to committing an unethical act in order to conserve their own resources, but also morally disengage as a coping mechanism to reduce emotional duress upon learning of the consequences of their actions, …

The Impact Of The Boko Haram Insurgency In Northeast Nigeria On Childhood Wasting: A Double-Difference Study, Gillian Dunn

Publications and Research

Background: This research examines the relationship between violent conflict and childhood wasting in Northeast Nigeria, where residents have been subjected to fighting between the Nigerian government and Boko Haram - an extremist Islamist movement - since 2009.

Methods: Using two Demographic and Health Surveys from before and after the Boko Haram insurgency started, a double-difference (difference-in-difference) approach is used to assess the impact of the conflict on mean weight for- height z-scores and the likelihood of wasting.

Results: Results suggest that if children exposed to the conflict had not been exposed, their mean weight-for height z-score would be 0.49 standard …

Burden Of Rheumatoid Arthritis Among Us Medicare Population: Co-Morbidities, Health-Care Resource Utilization And Costs, Chieh-I Chen, Li Wang, Wenhui Wei, Huseyin Yuce, Kristine Phillips

Publications and Research

Objectives. The study aimed to assess the burden of RA among the US Medicare population (aged 65 years) by comparing co-morbidities, health-care resource utilization (HCRU) and costs against matched non-RA Medicare patients.

Methods. Data were obtained from the Medicare fee-for-service claims database from 2010 to 2013. RA Medicare patients were identically matched with Medicare patients without RA (controls) based on demographics. Bivariate analyses were conducted to examine differences between cohorts for comorbidities, HCRU and costs. A generalized linear model was used to test relationships between patient-level characteristics, HCRU and costs.

Results. The study population included 115 867 RA patients and …

Toxicdocs: A New Resource For Assessing The Impact Of Corporate Practices On Health, Nicholas Freudenberg

Publications and Research

In the past century, corporations have contributed to premature death and preventable illnesses globally. A growing body of evidence shows how the practices of corporations and their allies contribute to chronic diseases, injuries, and toxic exposures [1–3]. Public health researchers can chart how business practices such as marketing, product formulation and pricing, and corporate political activity such as lobbying, election campaign contributions, sponsored research, and public relations promote the behaviors, environments, and policies that shape patterns of health and disease [4–6].

Liposomal Tricurin, A Synergistic Combination Of Curcumin, Epicatechin Gallate And Resveratrol, Repolarizes Tumor-Associated Microglia/Macrophages, And Eliminates Glioblastoma (Gbm) And Gbm Stem Cells, Sumit Mukherjee, Juliet N. E. Baidoo, Samay Sampat, Andrew Manusco, Lovena David, Leah S. Cohen, Shuiqin Zhou, Probal Banerjee

Publications and Research

Glioblastoma (GBM) is a deadly brain tumor with a current mean survival of 12–15 months. Despite being a potent anti-cancer agent, the turmeric ingredient curcumin (C) has limited anti-tumor efficacy in vivo due to its low bioavailability. We have reported earlier a strategy involving the use two other polyphenols, epicatechin gallate (E) from green tea and resveratrol (R) from red grapes at a unique, synergistic molar ratio with C (C:E:R: 4:1:12.5, termed TriCurin) to achieve superior potency against HPV+ tumors than C alone at C:E:R (M): 32:8:100 (termed 32 M+ TriCurin). We have now prepared liposomal TriCurin (TrLp) and demonstrated …

Transspinal Direct Current Stimulation Produces Persistent Plasticity In Human Motor Pathways, Lynda M. Murray, Behdad Tahayori, Maria Knikou

Publications and Research

The spinal cord is an integration center for descending, ascending, and segmental neural signals. Noninvasive transspinal stimulation may thus constitute an effective method for concomitant modulation of local and distal neural circuits. In this study, we established changes in cortical excitability and input/output function of corticospinal and spinal neural circuits before, at 0–15 and at 30–45 minutes after cathodal, anodal, and sham transspinal direct current stimulation (tsDCS) to the thoracic region in healthy individuals. We found that intracortical inhibition was different among stimulation polarities, however remained unchanged over time. Intracortical facilitation increased after cathodal and anodal tsDCS delivered with subjects …

Factors Associated With Perceived Accuracy Of The Undetectable = Untransmittable Slogan Among Men Who Have Sex With Men: Implications For Messaging Scale-Up And Implementation, H Jonathon Rendina, J T. Parsons

Publications and Research

Introduction: Recent research has shown high efficacy of HIV treatment for reducing the risk of HIV transmission to sexual partners. As the efficacy of treatment as prevention (TasP) has proliferated, a new messaging campaign, Undetectable = Untransmittable, has been gaining popularity. The purpose of this paper was to assess factors associated with the perceived accuracy of this TasP messaging strategy among a large and diverse sample of gay, bisexual, and other men who have sex with men (GBMSM) in order to inform subsequent efforts at large-scale and implementation of the HIV prevention message.

Methods: We conducted a nationwide survey of …

Target Engagement Imaging Of Parp Inhibitors In Small-Cell Lung Cancer, Brandon Carney, Susanne Kossatz, Benjamin H. Lok, Valentina Schneeberger, Kishore K. Gangangari, Naga Vara Kishore Pillarsetty, Wolfgang A. Weber, Charles M. Rudin, John T. Poirier, Thomas Reiner

Publications and Research

Insufficient chemotherapy response and rapid disease progression remain concerns for smallcell lung cancer (SCLC). Oncologists rely on serial CT scanning to guide treatment decisions, but this cannot assess in vivo target engagement of therapeutic agents. Biomarker assessments in biopsy material do not assess contemporaneous target expression, intratumoral drug exposure, or drug-target engagement. Here, we report the use of PARP1/2-targeted imaging to measure target engagement of PARP inhibitors in vivo. Using a panel of clinical PARP inhibitors, we show that PARP imaging can quantify target engagement of chemically diverse small molecule inhibitors in vitro and in vivo. We measure PARP1/2 inhibition …

Precocious Development Of Self-Awareness In Dolphins, Rachel Morrison, Diana Reiss

Publications and Research

Mirror-self recognition (MSR) is a behavioral indicator of self-awareness in young children and only a few other species, including the great apes, dolphins, elephants and magpies. The emergence of self-awareness in children typically occurs during the second year and has been correlated with sensorimotor development and growing social and self-awareness. Comparative studies of MSR in chimpanzees report that the onset of this ability occurs between 2 years 4 months and 3 years 9 months of age. Studies of wild and captive bottlenose dolphins (Tursiops truncatus) have reported precocious sensorimotor and social awareness during the first weeks of life, but no …

Nanoparticle Elasticity Directs Tumor Uptake, Peng Guo, Daxing Liu, Kriti Subramanyam, Biran Wang, Jiang Yang, Jing Huang, Debra T. Auguste, Marsha A. Moses

Publications and Research

To date, the role of elasticity in drug delivery remains elusive due to the inability to measure microscale mechanics and alter rheology without affecting chemistry. Herein, we describe the in vitro cellular uptake and in vivo tumor uptake of nanolipogels (NLGs). NLGs are composed of identical lipid bilayers encapsulating an alginate core, with tunable elasticity. The elasticity of NLGs was evaluated by atomic force microscopy, which demonstrated that they exhibit Young’s moduli ranging from 45 ± 9 to 19,000 ± 5 kPa. Neoplastic and non-neoplastic cells exhibited significantly greater uptake of soft NLGs (Young’s modulus13.8 MPa). In an orthotopic breast …

Component Tree Analysis Of Cystovirus Φ6 Nucleocapsid Cryo-Em Single Particle Reconstructions, Lucas Oliveira, Ze Ye, Al Katz, Alexandra Alimova, Hui Wei, Gabor T. Herman, Paul Gottlieb

Publications and Research

The 3-dimensional structure of the nucleocapsid (NC) of bacteriophage φ6 is described utilizing component tree analysis, a topological and geometric image descriptor. The component trees are derived from density maps of cryo-electron microscopy single particle reconstructions. Analysis determines position and occupancy of structure elements responsible for RNA packaging and transcription. Occupancy of the hexameric nucleotide triphosphorylase (P4) and RNA polymerase (P2) are found to be essentially complete in the NC. The P8 protein lattice likely fixes P4 and P2 in place during maturation. We propose that the viral procapsid (PC) is a dynamic structural intermediate where the P4 and P2 …

The Association Between A Body Shape Index And Cardiovascular Risk In Overweight And Obese Children And Adolescents, Chiara Mameli, Nir Y. Krakauer, Jesse C. Karakauer, Alessandra Bosetti, Chiara Matilde Ferrari, Norma Moiana, Laura Schneider, Barbara Borsani, Teresa Genoni, Gianvincenzo Zuccotti

Publications and Research

A Body Shape Index (ABSI) and normalized hip circumference (Hip Index, HI) have been recently shown to be strong risk factors for mortality and for cardiovascular disease in adults. We conducted an observational cross-sectional study to evaluate the relationship between ABSI, HI and cardiometabolic risk factors and obesity-related comorbidities in overweight and obese children and adolescents aged 2±18 years. We performed multivariate linear and logistic regression analyses with BMI, ABSI, and HI age and sex normalized z scores as predictors to examine the association with cardiometabolic risk markers (systolic and diastolic blood pressure, fasting glucose and insulin, total cholesterol and …

The Effectiveness Of Critical Time Intervention For Abused Women Leaving Women’S Shelters: A Randomized Controlled Trial, Danielle A. M. Lako, Marielle D. Beijersbergen, Irene E. Jonker, Renee De Vet, Daniel B. Herman, Albert M. Van Hemert, Judith R. L. M. Wolf

Publications and Research

Objectives: To examine the effectiveness of critical time intervention (CTI)—an evidence-based intervention—for abused women transitioning from women’s shelters to community living. Methods A randomized controlled trial was conducted in nine women’s shelters across the Netherlands. 136 women were assigned to CTI (n = 70) or care-as-usual (n = 66). Data were analyzed using intention-to-treat three-level mixed-effects models.

Results: Women in the CTI group had significant fewer symptoms of post-traumatic stress (secondary outcome) (adjusted mean difference - 7.27, 95% CI - 14.31 to - 0.22) and a significant fourfold reduction in unmet care needs (intermediate outcome) (95% CI 0.06–0.94) compared to …

Ten Years Of Food Policy Governance In New York City: Lessons For The Next Decade, Nicholas Freudenberg, Nevin Cohen, Janet Poppendieck, Craig Willingham

Publications and Research

No abstract provided.

Regulation Of Radioactive Fracking Waste, Elizabeth Ann Glass Geltman, Nichole Leclair

Publications and Research

Natural gas extracted form shale reached record production totals in 2015 in the United States and the US Energy Information Administration (EIA) forecasts natural gas production will continue to increase. Wastes from shale gas extraction can contain the radioactive isotopes radium-226 (Ra-226) and radium-228 (Ra-228), which decay further into radon (Rn). Exposure to radon, a form of naturally occurring radioactive materials (NORM), is the leading cause of lung cancer in the United States, after smoking. This article explores how states handle the disposal of technologically enhanced naturally occurring radioactive materials (TENORM) and/or NORM waste from oil and gas operations to …

The Relationship Between In-Session Commitment Language And Daily Self-Reported Commitment To Reduce Or Abstain From Drinking, Alexis Kuerbis, Jessica Houser, Paul Amrhein, Hayley Treloar Padovano, Jon Morgenstern

Publications and Research

Background: Motivational interviewing is hypothesized to operate by enhancing a client’s internal motivation to change. Past research operationalizes this process by measuring in-session statements for change (i.e., change talk), yet relationships between change talk and other measures of motivation have yet to be substantiated. This study tested whether in-session change talk predicted subsequent reports of commitment to abstain or moderate drinking assessed via ecological momentary assessment (EMA), and explored each of their contributions to drinking outcomes. Method: Secondary data analysis was performed on data from 48 study participants who received therapy within a randomized controlled trial testing mechanisms of actions …

Peptide Density Targets And Impedes Triple Negative Breast Cancer Metastasis, Daxing Liu, Peng Guo, Craig Mccarthy, Biran Wang, Yu Tao, Debra Auguste

Publications and Research

The C-X-C chemokine receptor type 4 (CXCR4, CD184) pathway is a key regulator of cancer metastasis. Existing therapeutics that block CXCR4 signaling are dependent on single molecule-receptor interactions or silencing CXCR4 expression. CXCR4 localizes in lipid rafts and forms dimers therefore CXCR4 targeting and signaling may depend on ligand density. Herein, we report liposomes presenting a CXCR4 binding peptide (DV1) as a threedimensional molecular array, ranging from 9k to 74k molecules μm−2, target triple negative breast cancer (TNBC). TNBC cells exhibit a maxima in binding and uptake of DV1functionalized liposomes (L-DV1) in vitro at a specific density, which yields a …

Teaching Third-Year Medical Students To Address Patients’ Spiritual Needs In The Surgery/Anesthesiology Clerkship, Holly G. Atkinson, David Fleenor, Susan M. Lerner, Edward Poliandro, Joseph Truglio

Publications and Research

Introduction: Despite many patients wanting physicians to inquire about their religious/spiritual beliefs, most physicians do not make such inquiries. Among physicians who do, surgeons are less likely than family and general practitioners and psychiatrists to do so.

Methods: To address this gap, we developed a 60-minute curriculum that follows the Kolb cycle of experiential learning for third-year medical students on their surgery/anesthesiology clerkship. The session includes definitions of religion/spirituality, an overview of the literature on spirituality in surgery, a review of the FICA Spiritual History Tool, discussion of the role of the chaplain and the process of initiating a chaplain …

Readability Of Prostate Cancer Information Online: A Cross-Sectional Study, Corey H. Basch, Danna Ethan, Sarah A. Maclean, Joseph Fera, Phillip Garcia, Charles E. Basch

Publications and Research

Reading and understanding health information, both components of health literacy, can influence patient decisions related to disease management. Older adults, the population of males at greatest risk for prostate cancer, may have compromised capacity to understand and use health information. The purpose of this study was to determine the readability of prostate cancer materials on the Internet using five recommended readability tests. Using a cleared Internet browser, a search was conducted for “prostate cancer.” The URLs of the first 100 websites in English were recorded to create the sample. The readability scores for each website were determined using an online, …

The Influence Of Religion And Spirituality On Hiv Prevention Among Black And Latino Men Who Have Sex With Men, New York City, Kathryn Drumhiller, Jose Nanín, Zaneta Gaul, Madeline Y. Sutton

Publications and Research

The influence of religion and spirituality (R/S) on HIV prevention has been understudied, especially for Black and/or Latino men who have sex with men (BLMSM), who bear a disproportionate burden of HIV, and who are part of racial/ethnic communities with high engagement in R/S. The specific aim of this study was to explore perspectives about R/S among BLMSM to inform HIV prevention strategies and reduce HIV-related health disparities. Data from 105 qualitative interviews with BLMSM were analyzed; 58 (55%) stated that R/S had no personal influence on HIV prevention. For those reporting any R/S influence, main themes were: (1) R/S …

"Burned Out" At Work But Satisfied With One's Job: Anatomy Of A False Paradox, Eric Laurent, Irvin Sam Schonfeld, Renzo Bianchi

Publications and Research

In a recent study of 346 US neurosurgery residents Attenello et al reported that 67% of their participants suffered from burnout. The authors also found that 81% of surveyed residents were satisfied with their career. Attenello et al described their results as paradoxical. We criticize their methodology.

Quantification Of Hiv-1 Rna Among Men Who Have Sex With Men Using An At-Home Self-Collected Dried Blood Spot Specimen: Feasibility Study, Sabina Hirshfield, Richard A. Teran, Martin J. Downing Jr., Mary Ann Chiasson, Hong-Van Tieu, Laura Dize, Charlotte A. Gaydos

Publications and Research

Background: Suboptimal antiretroviral therapy (ART) adherence and disengagement in care present significant public health challenges because of the increased probability of HIV transmission. In the United States, men who have sex with men (MSM) continue to be disproportionately affected by HIV, highlighting a critical need to engage high-risk MSM living with HIV who are not engaged or retained in care.

Objective: The aim of the study was to assess the feasibility of at-home blood self-collection and laboratory quantification of HIV-1 RNA viral load (VL) to report laboratory-based VL outcomes and compare self-reported and laboratory-reported VL

Methods: Between 2016 and 2017, …

The Impact Of Sarcopenic Obesity On Inflammation, Lean Body Mass, And Muscle Strength In Elderly Women, Dahan Da Cunha Nascimento, Samuel Da Cunha Oliveira, Denis Cesar Leite Vieira, Silvana Schwerz Funghetto, Alessandro Oliveira Silva, Renato Valduga, Brad J. Schoenfeld, Jonato Prestes

Publications and Research

Objective: The objective of this study was to apply the newly standardized definition for sarcopenia from the Foundation for the National Institutes of Health (FNIH) and the current definition for obesity to 1) determine the prevalence of sarcopenic obesity (SO) in obese elderly women; 2) compare the muscle strength, lean body mass, and markers of inflammation between obese elderly women with SO and nonsarcopenic obesity (NSO), and 3) elucidate the relation- ship between appendicular lean mass adjusted for body mass index (aLM/BMI) with muscle strength, lean body mass, and obesity indices.

Methods: A total of 64 elderly obese women (age: …