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Science Foundations And The Bulletin, Bret Collier, Anna Knipps, Jeff Levengood, Ashley Tunstall Dec 2023

Science Foundations And The Bulletin, Bret Collier, Anna Knipps, Jeff Levengood, Ashley Tunstall

Faculty Publications

No abstract provided.

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Habitat Selection Of Gould’S Wild Turkeys In Southeastern Arizona, Erin E. Ulrey, Patrick H. Wightman, Nicholas W. Bakner, Byron R. Buckley, Nathan Fyffe, Brittany Oleson, Alex Smallwood, James R. Heffelfinger, Michael J. Chamberlain, Bret A. Collier Dec 2023

Habitat Selection Of Gould’S Wild Turkeys In Southeastern Arizona, Erin E. Ulrey, Patrick H. Wightman, Nicholas W. Bakner, Byron R. Buckley, Nathan Fyffe, Brittany Oleson, Alex Smallwood, James R. Heffelfinger, Michael J. Chamberlain, Bret A. Collier

Faculty Publications

In semi-arid environments, resources necessary for survival may be unevenly distributed across the landscape. Gould’s wild turkeys (Meleagris gallopavo mexicana) are spatially restricted to mountainous semi-arid areas of southwestern United States and Mexico, and information on their distribution and habitat use is limited. We described how landcover type and topographical features influenced space use and habitat selection by Gould’s wild turkeys in southeastern Arizona. We used GPS data from 51 Gould’s wild turkeys to describe resource selection during 2016–2017 in southeastern Arizona, USA. We estimated home ranges and calculated resource selection functions using distance from landcover types, slope, aspect, and …

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Behavioral-Dependent Recursive Movements And Implications For Resource Selection, Nicholas W. Bakner, Bret A. Collier, Michael J. Chamberlain Dec 2023

Behavioral-Dependent Recursive Movements And Implications For Resource Selection, Nicholas W. Bakner, Bret A. Collier, Michael J. Chamberlain

Faculty Publications

Within home ranges, animals repeatedly visit certain areas. Recursive movement patterns are widespread throughout the animal kingdom, but are rarely considered when developing resource selection models. We examined how behavioral state-dependent recursive movements influenced reource selection of eastern wild turkey (Meleagris gallopavo silvestris) broods as they aged from day 1 to 28. Because broods become more plastic in behaviors once they begin roosting off the ground, we separated data into broods that were ground roosting (1–13 days) and tree roosting (14–28 days). We used Hidden Markov Models to identify 2 behavioral states (restricted and mobile). We extracted state-specific recursive movements …

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A Trait Dataset For Freshwater Mussels Of The United States Of America, Garrett W. Hopper, Jamie R. Bucholz, Traci P. Dubose, Kaelyn J. Fogelman, Sean M. Keogh, Megan E. Kubala, Matthew B. Lodato, David H. Nichols, Irene Sánchez González, John M. Pfeiffer, James A. Stoeckel, Jeffrey D. Lozier, Carla L. Atkinson Dec 2023

A Trait Dataset For Freshwater Mussels Of The United States Of America, Garrett W. Hopper, Jamie R. Bucholz, Traci P. Dubose, Kaelyn J. Fogelman, Sean M. Keogh, Megan E. Kubala, Matthew B. Lodato, David H. Nichols, Irene Sánchez González, John M. Pfeiffer, James A. Stoeckel, Jeffrey D. Lozier, Carla L. Atkinson

Faculty Publications

The United States of America has a diverse collection of freshwater mussels comprising 301 species distributed among 59 genera and two families (Margaritiferidae and Unionidae), each having a unique suite of traits. Mussels are among the most imperilled animals and are critical components of their ecosystems, and successful management, conservation and research requires a cohesive and widely accessible data source. Although trait-based analysis for mussels has increased, only a small proportion of traits reflecting mussel diversity in this region has been collated. Decentralized and non-standardized trait information impedes large-scale analysis. Assembling trait data in a synthetic dataset enables comparison across …

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New Insights In The Mechanisms Of Weight-Loss Maintenance: Summary From A Pennington Symposium, Emily W. Flanagan, Redin Spann, Sarah E. Berry, Hans Rudolf Berthoud, Stephanie Broyles, Gary D. Foster, Jonathan Krakoff, Ruth J.F. Loos, Michael R. Lowe, Danielle M. Ostendorf, Tiffany M. Powell-Wiley, Leanne M. Redman, Michael Rosenbaum, Philip R. Schauer, Randy J. Seeley, Boyd A. Swinburn, Kevin Hall, Eric Ravussin Dec 2023

New Insights In The Mechanisms Of Weight-Loss Maintenance: Summary From A Pennington Symposium, Emily W. Flanagan, Redin Spann, Sarah E. Berry, Hans Rudolf Berthoud, Stephanie Broyles, Gary D. Foster, Jonathan Krakoff, Ruth J.F. Loos, Michael R. Lowe, Danielle M. Ostendorf, Tiffany M. Powell-Wiley, Leanne M. Redman, Michael Rosenbaum, Philip R. Schauer, Randy J. Seeley, Boyd A. Swinburn, Kevin Hall, Eric Ravussin

Division of Basic Science Faculty Publications

Obesity is a chronic disease that affects more than 650 million adults worldwide. Obesity not only is a significant health concern on its own, but predisposes to cardiometabolic comorbidities, including coronary heart disease, dyslipidemia, hypertension, type 2 diabetes, and some cancers. Lifestyle interventions effectively promote weight loss of 5% to 10%, and pharmacological and surgical interventions even more, with some novel approved drugs inducing up to an average of 25% weight loss. Yet, maintaining weight loss over the long-term remains extremely challenging, and subsequent weight gain is typical. The mechanisms underlying weight regain remain to be fully elucidated. The purpose …

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Sensory Spinal Interoceptive Pathways And Energy Balance Regulation, Heike Münzberg, Hans Rudolf Berthoud, Winfried L. Neuhuber Dec 2023

Sensory Spinal Interoceptive Pathways And Energy Balance Regulation, Heike Münzberg, Hans Rudolf Berthoud, Winfried L. Neuhuber

Division of Basic Science Faculty Publications

Interoception plays an important role in homeostatic regulation of energy intake and metabolism. Major interoceptive pathways include gut-to-brain and adipose tissue-to brain signaling via vagal sensory nerves and hormones, such as leptin. However, signaling via spinal sensory neurons is rapidly emerging as an additional important signaling pathway. Here we provide an in-depth review of the known anatomy and functions of spinal sensory pathways and discuss potential mechanisms relevant for energy balance homeostasis in health and disease. Because sensory innervation by dorsal root ganglia (DRG) neurons goes far beyond vagally innervated viscera and includes adipose tissue, skeletal muscle, and skin, it …

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Personalized Feedback Intervention For Individuals With Low Distress Tolerance Who Smoke Cigarettes: A Randomized Controlled Trial Of A Digital Intervention, Brooke Y. Redmond, Aniqua Salwa, Jonathan B. Bricker, Julia D. Buckner, Lorra Garey, Michael J. Zvolensky Dec 2023

Personalized Feedback Intervention For Individuals With Low Distress Tolerance Who Smoke Cigarettes: A Randomized Controlled Trial Of A Digital Intervention, Brooke Y. Redmond, Aniqua Salwa, Jonathan B. Bricker, Julia D. Buckner, Lorra Garey, Michael J. Zvolensky

Faculty Publications

Introduction: Cigarette smoking remains the leading preventable cause of death and disability in the United States and frequently co-occurs with anxiety and depressive symptoms. A novel and integrative, theory-driven approach to address the heterogeneity of mood-related symptoms associated with cigarette use is to focus on transdiagnostic processes, such as distress tolerance, that underpin both mood-related symptoms and smoking behavior. The current study sought to develop and examine the feasibility, acceptability, and initial efficacy of a digitally delivered integrated personalized feedback intervention (PFI) that addresses smoking-distress tolerance relations. Methods: Participants included 121 adults (71.1 % male; Mage = 29.33 years, SD …

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Attentional Biases In Facial Emotion Processing In Individuals At Clinical High Risk For Psychosis, Trevor F. Williams, Alex S. Cohen, Alvaro Sanchez-Lopez, Jutta Joormann, Vijay A. Mittal Dec 2023

Attentional Biases In Facial Emotion Processing In Individuals At Clinical High Risk For Psychosis, Trevor F. Williams, Alex S. Cohen, Alvaro Sanchez-Lopez, Jutta Joormann, Vijay A. Mittal

Faculty Publications

Individuals at clinical high risk (CHR) for psychosis exhibit altered facial emotion processing (FEP) and poor social functioning. It is unclear whether FEP deficits result from attentional biases, and further, how these abnormalities are linked to symptomatology (e.g., negative symptoms) and highly comorbid disorders that are also tied to abnormal FEP (e.g., depression). In the present study, we employed an eye-tracking paradigm to assess attentional biases and clinical interviews to examine differences between CHR (N = 34) individuals and healthy controls (HC; N = 46), as well as how such biases relate to symptoms and functioning in CHR individuals. Although …

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The Brief Adolescent Depression Screen: A Brief Screening Tool For Depression And Suicidal Behavior In Inpatient Adolescents, Erin P. Vaughan, Emily C. Kemp, Emily L. Robertson, Toni M. Walker, Paige Picou, Paul J. Frick, John De Back Dec 2023

The Brief Adolescent Depression Screen: A Brief Screening Tool For Depression And Suicidal Behavior In Inpatient Adolescents, Erin P. Vaughan, Emily C. Kemp, Emily L. Robertson, Toni M. Walker, Paige Picou, Paul J. Frick, John De Back

Faculty Publications

Background: In clinical settings, there is significant need for brief, easily-administered assessment tools for adolescent depression that can be used by mental health clinicians from a variety of training backgrounds. Existing depression screening tools do not assess for duration and consistency of symptoms, two key indicators of pathological depression. Objective: The Brief Adolescent Depression Screen (BADS) was developed to screen for major and persistent depressive disorders in adolescents in order to meet the assessment needs in an inpatient setting, and the validity of this tool was tested. Method: The current study used a sample of 396 inpatient adolescents to assess …

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How Important Is Developmental Maturity In Assessing Whether Adolescents Will Share True Or False Accounts Of A First Offense In Legal Interactions?, Jennifer Lavoie, Adam D. Fine, April G. Thomas, Paul J. Frick, Laurence Steinberg, Elizabeth Cauffman Dec 2023

How Important Is Developmental Maturity In Assessing Whether Adolescents Will Share True Or False Accounts Of A First Offense In Legal Interactions?, Jennifer Lavoie, Adam D. Fine, April G. Thomas, Paul J. Frick, Laurence Steinberg, Elizabeth Cauffman

Faculty Publications

We examined the developmental and situation-specific differences between four groupings of adolescents charged with a first offense: those who committed the crime and told the authorities they committed the crime (true confessors; 71%), those who committed the crime but told the authorities they did not commit the crime (false deniers; 8%), those who did not commit the crime but told the authorities they did commit the crime (false confessors; 12%) and those who did not commit the crime and told the authorities they did not commit the crime (true deniers; 10%). Findings indicate a developmental profile for each respondent grouping, …

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Amazonian Mixed-Species Flocks Demonstrate Flexible Preferences For Vertical Forest Structure, Charles P.J. Coddington, W. Justin Cooper, Cameron L. Rutt, Karl Mokross, Bruna R. Amaral, Philip C. Stouffer, David A. Luther Dec 2023

Amazonian Mixed-Species Flocks Demonstrate Flexible Preferences For Vertical Forest Structure, Charles P.J. Coddington, W. Justin Cooper, Cameron L. Rutt, Karl Mokross, Bruna R. Amaral, Philip C. Stouffer, David A. Luther

Faculty Publications

How species interact with human-disturbed environments is a central focus of conservation biology. Within disturbed landscapes, regenerating forests have potential to provide habitat for forest species, especially as increasing amounts of primary forest are lost. As secondary forest regenerates beside primary forest, it increases habitat heterogeneity. However, relatively little is known about the influence of habitat heterogeneity on space use. In this study, we analyzed the topography and vertical vegetation structure of regenerating forest, small forest fragments, and undisturbed rainforest in the central Amazon to determine (1) how these structural characteristics influence understory mixed-species flock space use and (2) how …

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Genetic Variants Associated With Hantavirus Infection In A Reservoir Host Are Related To Regulation Of Inflammation And Immune Surveillance, Anna A. Pérez-Umphrey, Amie E. Settlecowski, Jean P. Elbers, S. Tyler Williams, Colleen B. Jonsson, Andrea Bonisoli-Alquati, Allison M. Snider, Sabrina S. Taylor Dec 2023

Genetic Variants Associated With Hantavirus Infection In A Reservoir Host Are Related To Regulation Of Inflammation And Immune Surveillance, Anna A. Pérez-Umphrey, Amie E. Settlecowski, Jean P. Elbers, S. Tyler Williams, Colleen B. Jonsson, Andrea Bonisoli-Alquati, Allison M. Snider, Sabrina S. Taylor

Faculty Publications

The immunogenetics of wildlife populations influence the epidemiology and evolutionary dynamic of the host-pathogen system. Profiling immune gene diversity present in wildlife may be especially important for those species that, while not at risk of disease or extinction themselves, are host to diseases that are a threat to humans, other wildlife, or livestock. Hantaviruses (genus: Orthohantavirus) are globally distributed zoonotic RNA viruses with pathogenic strains carried by a diverse group of rodent hosts. The marsh rice rat (Oryzomys palustris) is the reservoir host of Orthohantavirus bayoui, a hantavirus that causes fatal cases of hantavirus cardiopulmonary syndrome in humans. We performed …

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Modeling Of Cryopreservation Pathway Operation At An Aquatic Biomedical Stock Center For Zebrafish, Sarah Bodenstein, Fidan Abdullayeva, Joy M. Murphy, Zoltan M. Varga, Terrence R. Tiersch Dec 2023

Modeling Of Cryopreservation Pathway Operation At An Aquatic Biomedical Stock Center For Zebrafish, Sarah Bodenstein, Fidan Abdullayeva, Joy M. Murphy, Zoltan M. Varga, Terrence R. Tiersch

Faculty Publications

Aquatic biomedical model organisms play a substantial role in advancing our understanding of human health, however, comparably little work has been directed towards developing dependable, high-throughput storage programs for valuable genetic resources. The Zebrafish International Resource Center (ZIRC) has developed a standardized cryopreservation pathway and stored thousands of genetic lines in their repository for use by the biomedical research community. This has yet to be replicated in other facilities, and an overall repository-level pathway has never been analyzed for aquatic species. To encourage repository development for other biomedical models and to improve the ZIRC storage process and system, this study …

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Simulation Analysis Of High-Throughput Oyster Cryopreservation At Three Scales Of Production, Sarah Bodenstein, Isabelina Nahmens, Brian R. Callam, Terrence R. Tiersch Dec 2023

Simulation Analysis Of High-Throughput Oyster Cryopreservation At Three Scales Of Production, Sarah Bodenstein, Isabelina Nahmens, Brian R. Callam, Terrence R. Tiersch

Faculty Publications

Cryopreservation and germplasm repositories offer a variety of potential benefits to aquaculture industries. Despite this, no comprehensive repository systems exist for any prominent aquaculture species. A species that could greatly benefit from the use of cryopreserved sperm and repository storage is the eastern oyster, Crassostrea virginica. High-throughput cryopreservation protocols already exist for this species, and the easy transport of frozen sperm could facilitate selective breeding programs that address pressing challenges currently faced in the industry, such as mortality due to low-salinity conditions. This study addressed the gap between cryopreservation protocols and repository development in the oyster industry by creating simulation …

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Dietary Intake During A Pragmatic Cluster-Randomized Weight Loss Trial In An Underserved Population In Primary Care, John W. Apolzan, Corby K. Martin, Robert L. Newton, Candice A. Myers, Connie L. Arnold, Terry C. Davis, William D. Johnson, Dachuan Zhang, Christoph Höchsmann, Vivian A. Fonseca, Kara D. Denstel, Emily F. Mire, Benjamin F. Springgate, Carl J. Lavie, Peter T. Katzmarzyk, Phillip Brantley, Ronald Horswell, Tina K. Thethi, Jonathan Gugel, Eboni Price-Haywood, Kathleen B. Kennedy, Daniel F. Sarpong Dec 2023

Dietary Intake During A Pragmatic Cluster-Randomized Weight Loss Trial In An Underserved Population In Primary Care, John W. Apolzan, Corby K. Martin, Robert L. Newton, Candice A. Myers, Connie L. Arnold, Terry C. Davis, William D. Johnson, Dachuan Zhang, Christoph Höchsmann, Vivian A. Fonseca, Kara D. Denstel, Emily F. Mire, Benjamin F. Springgate, Carl J. Lavie, Peter T. Katzmarzyk, Phillip Brantley, Ronald Horswell, Tina K. Thethi, Jonathan Gugel, Eboni Price-Haywood, Kathleen B. Kennedy, Daniel F. Sarpong

Clinical Research Faculty Publications

Background: Currently there are limited data as to whether dietary intake can be improved during pragmatic weight loss interventions in primary care in underserved individuals. Methods: Patients with obesity were recruited into the PROPEL trial, which randomized 18 clinics to either an intensive lifestyle intervention (ILI) or usual care (UC). At baseline and months 6, 12, and 24, fruit and vegetable (F/V) intake and fat intake was determined. Outcomes were analyzed by repeated-measures linear mixed-effects multilevel models and regression models, which included random cluster (clinic) effects. Secondary analyses examined the effects of race, sex, age, and food security status. Results: …

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The Personalized Nutrition Study (Points): Evaluation Of A Genetically Informed Weight Loss Approach, A Randomized Clinical Trial, Christoph Höchsmann, Shengping Yang, José M. Ordovás, James L. Dorling, Catherine M. Champagne, John W. Apolzan, Frank L. Greenway, Michelle I. Cardel, Gary D. Foster, Corby K. Martin Dec 2023

The Personalized Nutrition Study (Points): Evaluation Of A Genetically Informed Weight Loss Approach, A Randomized Clinical Trial, Christoph Höchsmann, Shengping Yang, José M. Ordovás, James L. Dorling, Catherine M. Champagne, John W. Apolzan, Frank L. Greenway, Michelle I. Cardel, Gary D. Foster, Corby K. Martin

Clinical Research Faculty Publications

Weight loss (WL) differences between isocaloric high-carbohydrate and high-fat diets are generally small; however, individual WL varies within diet groups. Genotype patterns may modify diet effects, with carbohydrate-responsive genotypes losing more weight on high-carbohydrate diets (and vice versa for fat-responsive genotypes). We investigated whether 12-week WL (kg, primary outcome) differs between genotype-concordant and genotype-discordant diets. In this 12-week single-center WL trial, 145 participants with overweight/obesity were identified a priori as fat-responders or carbohydrate-responders based on their combined genotypes at ten genetic variants and randomized to a high-fat (n = 73) or high-carbohydrate diet (n = 72), yielding 4 groups: (1) …

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Leslie Paul Kozak, Phd (1940-2023), Eric Ravussin, Sven Enerback, Robert Koza Dec 2023

Leslie Paul Kozak, Phd (1940-2023), Eric Ravussin, Sven Enerback, Robert Koza

Clinical Research Faculty Publications

No abstract provided.

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Effect Of An Acute Long-Duration Exercise Bout On Skeletal Muscle Lipid Droplet Morphology, Glut 4 Protein, And Perilipin Protein Expression, Sudip Bajpeyi, Jehu N. Apaflo, Victoria Rosas, Keisha Sepulveda-Rivera, Armando Varela-Ramirez, Jeffrey D. Covington, Jose E. Galgani, Eric Ravussin Dec 2023

Effect Of An Acute Long-Duration Exercise Bout On Skeletal Muscle Lipid Droplet Morphology, Glut 4 Protein, And Perilipin Protein Expression, Sudip Bajpeyi, Jehu N. Apaflo, Victoria Rosas, Keisha Sepulveda-Rivera, Armando Varela-Ramirez, Jeffrey D. Covington, Jose E. Galgani, Eric Ravussin

Clinical Research Faculty Publications

Purpose: Smaller lipid droplet morphology and GLUT 4 protein expression have been associated with greater muscle oxidative capacity and glucose uptake, respectively. The main purpose of this study was to determine the effect of an acute long-duration exercise bout on skeletal muscle lipid droplet morphology, GLUT4, perilipin 3, and perilipin 5 expressions. Methods: Twenty healthy men (age 24.0 ± 1.0 years, BMI 23.6 ± 0.4 kg/m2) were recruited for the study. The participants were subjected to an acute bout of exercise on a cycle ergometer at 50% VO2max until they reached a total energy expenditure of 650 kcal. The study …

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Body Shape Perception In Men And Women Without Obesity During Caloric Restriction: A Secondary Analysis From The Calerie Study, Maci M. Jacobson, Alexis M. Gardner, Camilla E. Handley, Michael W. Smith, William F. Christensen, Chad R. Hancock, Paule V. Joseph, Michael J. Larson, Corby K. Martin, James D. Lecheminant Dec 2023

Body Shape Perception In Men And Women Without Obesity During Caloric Restriction: A Secondary Analysis From The Calerie Study, Maci M. Jacobson, Alexis M. Gardner, Camilla E. Handley, Michael W. Smith, William F. Christensen, Chad R. Hancock, Paule V. Joseph, Michael J. Larson, Corby K. Martin, James D. Lecheminant

Clinical Research Faculty Publications

Objective: To examine body shape perception in 218 adults without obesity or history of eating disorders during caloric restriction (CR). Methods: Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE) is a 2-year, randomized clinical trial using a 2:1 assignment (CR, 25% reduction in calories; Control, typical diet). For this secondary analysis, we examined perceived body shape using the Body Shape Questionnaire (BSQ). Analyses of BSQ scores are reported by group, over time, by sex, and by BMI. Data for body fat percentage, symptoms of depression, food cravings, maximal oxygen consumption, and stress were analyzed for their association …

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Protocol To Evaluate The Effectiveness And Cost-Effectiveness Of An Environmental Nutrition And Physical Activity Intervention In Nurseries (Nutrition And Physical Activity Self Assessment For Child Care - Nap Sacc Uk): A Multicentre Cluster Randomised Controlled Trial, Ruth Kipping, Miranda Pallan, Kim Hannam, Kate Willis, Alex Dobell, Chris Metcalfe, Russell Jago, Laura Johnson, Rebecca Langford, Corby K. Martin, William Hollingworth, Madeleine Cochrane, James White, Pete Blair, Zoi Toumpakari, Jodi Taylor, Dianne Ward, Laurence Moore, Tom Reid, Megan Pardoe, Liping Wen, Marie Murphy, Anne Martin, Stephanie Chambers, Sharon Anne Simpson Dec 2023

Protocol To Evaluate The Effectiveness And Cost-Effectiveness Of An Environmental Nutrition And Physical Activity Intervention In Nurseries (Nutrition And Physical Activity Self Assessment For Child Care - Nap Sacc Uk): A Multicentre Cluster Randomised Controlled Trial, Ruth Kipping, Miranda Pallan, Kim Hannam, Kate Willis, Alex Dobell, Chris Metcalfe, Russell Jago, Laura Johnson, Rebecca Langford, Corby K. Martin, William Hollingworth, Madeleine Cochrane, James White, Pete Blair, Zoi Toumpakari, Jodi Taylor, Dianne Ward, Laurence Moore, Tom Reid, Megan Pardoe, Liping Wen, Marie Murphy, Anne Martin, Stephanie Chambers, Sharon Anne Simpson

Clinical Research Faculty Publications

Background: One in seven UK children have obesity when starting school, with higher prevalence associated with deprivation. Most pre-school children do not meet UK recommendations for physical activity and nutrition. Formal childcare settings provide opportunities to deliver interventions to improve nutritional quality and physical activity to the majority of 3–4-year-olds. The nutrition and physical activity self-assessment for childcare (NAP SACC) intervention has demonstrated effectiveness in the USA with high acceptability in the UK. The study aims to evaluate the effectiveness and cost-effectiveness of the NAP SACC UK intervention to increase physical activity, reduce sedentary time and improve nutritional intake. Methods: …

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Physiologic Hormone Administration Improves Hba1c In Native Americans With Type 2 Diabetes: A Retrospective Study And Review Of Insulin Secretion And Action, Candida J. Rebello, Tyler S. Morales, Katsya Chuon, Shu Dong, V. Tyrone Lam, Dan Purner, Stanley Lewis, Jonathan Lakey, Robbie A. Beyl, Frank L. Greenway Dec 2023

Physiologic Hormone Administration Improves Hba1c In Native Americans With Type 2 Diabetes: A Retrospective Study And Review Of Insulin Secretion And Action, Candida J. Rebello, Tyler S. Morales, Katsya Chuon, Shu Dong, V. Tyrone Lam, Dan Purner, Stanley Lewis, Jonathan Lakey, Robbie A. Beyl, Frank L. Greenway

Clinical Research Faculty Publications

Insulin is secreted in pulses from pancreatic beta-cells, and these oscillations maintain fasting plasma glucose levels within a narrow normal range. Within islets, beta-cells exhibit tight synchronization of regular oscillations. This control circuit is disrupted in type 2 diabetes, and irregularities in pulse frequency and amplitude occur. The prevalence of type 2 diabetes is three times higher in American Indian and Native Alaskans compared to Whites, and their genetic ancestry is associated with low beta-cell function. Obesity in this population compounds their vulnerability to adverse outcomes. The purpose of this article is to review insulin secretion and action and its …

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Acute Exercise Increases Nk Cell Mitochondrial Respiration And Cytotoxicity Against Triple-Negative Breast Cancer Cells Under Hypoxic Conditions, Eunhan Cho, James Stampley, Rachel Wall, Rachel Matthews, Elizabeth Zunica, Justin C. Brown, Neil M. Johannsen, Brian A. Irving, Guillaume Spielmann Dec 2023

Acute Exercise Increases Nk Cell Mitochondrial Respiration And Cytotoxicity Against Triple-Negative Breast Cancer Cells Under Hypoxic Conditions, Eunhan Cho, James Stampley, Rachel Wall, Rachel Matthews, Elizabeth Zunica, Justin C. Brown, Neil M. Johannsen, Brian A. Irving, Guillaume Spielmann

Clinical Research Faculty Publications

Purpose Triple-negative breast cancer (TNBC) is an aggressive, highly metastatic malignancy with high recurrence rates. Hypoxia is a hallmark of the TNBC tumor microenvironment, which promotes tumor growth while impairing natural killer (NK) cell cytotoxic functions. Although acute exercise improves NK cell function under normoxic conditions, the effect of exercise on NK cell cytotoxic functions under hypoxic conditions mimicking O2 tensions observed in solid tumors is unknown. Methods The cytotoxic functions of resting and postexercise NK cells isolated from thirteen young inactive healthy women were assessed against breast cancer cells expressing different levels of hormone receptors (MCF-7 and MDA-MB-231) under …

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Seasonal Changes In Physiological And Psychological Parameters Of Stress In Collegiate Swimmers, Haoyan Wang, Bailey M. Theall, Kate S. Early, Cullen Vincellette, Lyle Robelot, Rick L. Sharp, Jack Marucci, Shelly Mullenix, Derek Calvert, Nathan P. Lemoine, Brain A. Irving, Guillaume Spielmann, Neil M. Johannsen Dec 2023

Seasonal Changes In Physiological And Psychological Parameters Of Stress In Collegiate Swimmers, Haoyan Wang, Bailey M. Theall, Kate S. Early, Cullen Vincellette, Lyle Robelot, Rick L. Sharp, Jack Marucci, Shelly Mullenix, Derek Calvert, Nathan P. Lemoine, Brain A. Irving, Guillaume Spielmann, Neil M. Johannsen

Clinical Research Faculty Publications

To investigate the seasonal changes in physiological and psychological parameters of stress in collegiate swimmers. Fifteen NCAA Division I swimmers (8 men) participated in a tethered anaerobic swim test to determine physiological responses in an ecologically-relevant, graded exercise test. Wisconsin Upper Respiratory Symptom Survey (WURSS-21), Activation-Deactivation Adjective Check List (AD-ACL), Daily Analysis of Life Demands of Athletes (DALDA), and Pittsburgh Sleep Quality Index were assessed at post-season in April (V1), the end of off-season in June (V2), and pre-season in October (V3). The percent change was determined from V2–V1 (off-season phase), V3–V2 (pre-season phase), V1–V3 (in-season phase). Spearman’s rho correlation …

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An Aerobic Exercise Intervention To Improve Metabolic Health Among People Living With Hiv With At-Risk Alcohol Use: The Alive-Ex Research Study Protocol, Liz Simon, Stefany D. Primeaux, Danielle E. Levitt, Brianna Bourgeois, Neil M. Johannsen, Adrianna Peters, Jameel Ahmed, Richard H. Marshall, Alexandra H. Fairchild, Tekeda F. Ferguson, Patricia E. Molina Dec 2023

An Aerobic Exercise Intervention To Improve Metabolic Health Among People Living With Hiv With At-Risk Alcohol Use: The Alive-Ex Research Study Protocol, Liz Simon, Stefany D. Primeaux, Danielle E. Levitt, Brianna Bourgeois, Neil M. Johannsen, Adrianna Peters, Jameel Ahmed, Richard H. Marshall, Alexandra H. Fairchild, Tekeda F. Ferguson, Patricia E. Molina

Clinical Research Faculty Publications

Background: Effective antiretroviral therapy (ART) in people living with HIV (PLWH) has improved life expectancy and increased risk of age-associated cardiometabolic comorbidities. At-risk alcohol use is more frequent among PLWH and increases the risk of health challenges. PLWH with at-risk alcohol use are more likely to meet criteria for prediabetes/diabetes and this is associated with impaired whole-body glucose-insulin dynamics. Methods: The Alcohol & Metabolic Comorbidities in PLWH: Evidence Driven Interventions Study (ALIVE-Ex Study, NCT03299205) is a longitudinal, prospective, interventional study to determine the effects of an aerobic exercise protocol on improving dysglycemia among PLWH with at-risk alcohol use. The intervention …

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Mutual-Information Based Optimal Experimental Design For Hyperpolarized 13 C-Pyruvate Mri, Prashant K. Jha, Christopher Walker, Drew Mitchell, J. Tinsley Oden, Dawid Schellingerhout, James A. Bankson, David T. Fuentes Dec 2023

Mutual-Information Based Optimal Experimental Design For Hyperpolarized 13 C-Pyruvate Mri, Prashant K. Jha, Christopher Walker, Drew Mitchell, J. Tinsley Oden, Dawid Schellingerhout, James A. Bankson, David T. Fuentes

Faculty Publications

A key parameter of interest recovered from hyperpolarized (HP) MRI measurements is the apparent pyruvate-to-lactate exchange rate, kPL , for measuring tumor metabolism. This manuscript presents an information-theory-based optimal experimental design approach that minimizes the uncertainty in the rate parameter, kPL , recovered from HP-MRI measurements. Mutual information is employed to measure the information content of the HP measurements with respect to the first-order exchange kinetics of the pyruvate conversion to lactate. Flip angles of the pulse sequence acquisition are optimized with respect to the mutual information. A time-varying flip angle scheme leads to a higher parameter optimization that can …

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Preferred Atmospheric Circulations Associated With Favorable Prescribed Burns In The Gulf Of Mexico Coast, Usa, Chelsea S. Kross, Robert V. Rohli, Jena A. Moon, Auriel M.V. Fournier, Mark S. Woodrey, J. Andrew Nyman Dec 2023

Preferred Atmospheric Circulations Associated With Favorable Prescribed Burns In The Gulf Of Mexico Coast, Usa, Chelsea S. Kross, Robert V. Rohli, Jena A. Moon, Auriel M.V. Fournier, Mark S. Woodrey, J. Andrew Nyman

Faculty Publications

Background: Application of prescribed fire in natural plant communities is an important wildlife habitat management tool. Prescribed fire managers have suggested anecdotally that changing weather patterns may be influencing the frequency of days that have optimal conditions to conduct coastal marsh burns along the US Gulf of Mexico coast. Our study objectives were to (1) determine whether the frequency of atmospheric circulation patterns associated with prescribed fire prescriptions has changed from 1979 to 2018 for the Gulf Coast and (2) identify circulation patterns preferred by land managers for implementing prescribed fire. Results: While coastal marsh habitat is threatened by climate …

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An Examination Of The Relationships Between The Neighborhood Social Environment, Adiposity, And Cardiometabolic Disease Risk In Adolescence: A Cross-Sectional Study, Kara D. Denstel, Robbie A. Beyl, Denise M. Danos, Maura M. Kepper, Amanda E. Staiano, Katherine T. Theall, Tung Sung Tseng, Stephanie T. Broyles Dec 2023

An Examination Of The Relationships Between The Neighborhood Social Environment, Adiposity, And Cardiometabolic Disease Risk In Adolescence: A Cross-Sectional Study, Kara D. Denstel, Robbie A. Beyl, Denise M. Danos, Maura M. Kepper, Amanda E. Staiano, Katherine T. Theall, Tung Sung Tseng, Stephanie T. Broyles

Population and Public Health Science Faculty Publications

Background: Disadvantaged neighborhood environments are a source of chronic stress which undermines optimal adolescent health. This study investigated relationships between the neighborhood social environment, specifically, chronic stress exposures, adiposity, and cardiometabolic disease risk factors among 288 Louisiana adolescents aged 10 to 16 years. Methods: This cross-sectional study utilized baseline data from the Translational Investigation of Growth and Everyday Routines in Kids (TIGER Kids) study. Adolescent data were obtained using self-reported questionnaires (demographics and perceived neighborhood disorder), anthropometry, body imaging, and a blood draw while objective neighborhood data for the concentrated disadvantage index were acquired from the 2016 American Community Survey …

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Adolescent Diet Quality, Cardiometabolic Risk, And Adiposity: A Prospective Cohort, Kathy Hu, Alyssa M. Button, Claire M. Tate, Chelsea L. Kracht, Catherine M. Champagne, Amanda E. Staiano Dec 2023

Adolescent Diet Quality, Cardiometabolic Risk, And Adiposity: A Prospective Cohort, Kathy Hu, Alyssa M. Button, Claire M. Tate, Chelsea L. Kracht, Catherine M. Champagne, Amanda E. Staiano

Population and Public Health Science Faculty Publications

Objective: Examine the prospective association among diet with adolescent cardiometabolic risk (CMR) and anthropometrics. Methods: Secondary analysis of an observational study of adolescents aged 10–16 years. Twenty-four-hour food recalls were used to calculate Healthy Eating Index-2015 (HEI-2015) scores. Anthropometrics were assessed using magnetic resonance imaging, dual-energy x-ray absorptiometry, and height/weight measurements. CMR included mean arterial pressure, homeostatic model assessment for insulin resistance, high-density lipoprotein cholesterol, and triglycerides. Associations between HEI-2015 score at baseline with follow-up adiposity and CMR were examined using regression models. Results: A total of 192 adolescents were included. Baseline HEI-2015 scores were inversely associated with follow-up total …

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Amplifying Support For Physical Activity: The National Strategy On Hunger, Nutrition, And Health, Peter T. Katzmarzyk, John M. Jakicic, Russell R. Pate, Katrina L. Piercy, Laurie P. Whitsel Dec 2023

Amplifying Support For Physical Activity: The National Strategy On Hunger, Nutrition, And Health, Peter T. Katzmarzyk, John M. Jakicic, Russell R. Pate, Katrina L. Piercy, Laurie P. Whitsel

Population and Public Health Science Faculty Publications

No abstract provided.

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Adherence To Recess Guidelines In The United States Using Nationally Representative Data: Implications For Future Surveillance Efforts, Kimberly A. Clevenger, Genevieve F. Dunton, Peter T. Katzmarzyk, Karin A. Pfeiffer, David Berrigan Dec 2023

Adherence To Recess Guidelines In The United States Using Nationally Representative Data: Implications For Future Surveillance Efforts, Kimberly A. Clevenger, Genevieve F. Dunton, Peter T. Katzmarzyk, Karin A. Pfeiffer, David Berrigan

Population and Public Health Science Faculty Publications

BACKGROUND: National adherence to the recess recommendations of the Centers for Disease Control and Prevention (CDC) has not been comprehensively studied in the United States. METHODS: Data from 6 nationally representative data sets over the last decade (Classification of Laws Associated with School Students, Early Childhood Longitudinal Study, National Health and Nutrition Examination Survey, National Youth Fitness Survey, School Health Policies and Practices Survey, and the School Nutrition and Meal Cost Study) provided estimates for adherence to CDC recess guidelines. RESULTS: While approximately 65-80% of elementary school-children receive the recommended 20+ minutes of daily recess according to parent-, principal-, and …

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