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Twelve-Month Specific Igg Response To Sars-Cov-2 Receptor-Binding Domain Among Covid-19 Convalescent Plasma Donors In Wuhan, Cesheng Li, Ding Yu, Xiao Wu, Hong Liang, Zhijun Zhou, Yong Xie, Taojing Li, Junzheng Wu, Fengping Lu, Lu Feng, Min Mao, Lianzhen Lin, Huanhuan Guo, Shenglan Yue, Feifei Wang, Yan Peng, Yong Hu, Zejun Wang, Jianhong Yu, Yong Zhang, Jia Lu, Haoran Ning, Huichuan Yang, Daoxing Fu, Yanlin He, Dongbo Zhou, Tao Du, Kai Duan, Demei Dong, Kun Deng, Xia Zou, Ya Zhang, Rong Zhou, Yang Gao

Division of Basic Science Faculty Publications

To investigate the duration of humoral immune response in convalescent coronavirus disease 2019 (COVID-19) patients, we conduct a 12-month longitudinal study through collecting a total of 1,782 plasma samples from 869 convalescent plasma donors in Wuhan, China and test specific antibody responses. The results show that positive rate of IgG antibody against receptor-binding domain of spike protein (RBD-IgG) to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in the COVID-19 convalescent plasma donors exceeded 70% for 12 months post diagnosis. The level of RBD-IgG decreases with time, with the titer stabilizing at 64.3% of the initial level by the 9th month. …

5-Ht Recruits Distinct Neurocircuits To Inhibit Hunger-Driven And Non-Hunger-Driven Feeding, Yanlin He, Xing Cai, Hailan Liu, Krisitine M. Conde, Pingwen Xu, Yongxiang Li, Chunmei Wang, Meng Yu, Yang He, Hesong Liu, Chen Liang, Tingting Yang, Yongjie Yang, Kaifan Yu, Julia Wang, Rong Zheng, Feng Liu, Zheng Sun, Lora Heisler, Qi Wu, Qingchun Tong, Canjun Zhu, Gang Shu, Yong Xu

Division of Basic Science Faculty Publications

Obesity is primarily a consequence of consuming calories beyond energetic requirements, but underpinning drivers have not been fully defined. 5-Hydroxytryptamine (5-HT) neurons in the dorsal Raphe nucleus (5-HTDRN) regulate different types of feeding behavior, such as eating to cope with hunger or for pleasure. Here, we observed that activation of 5-HTDRN to hypothalamic arcuate nucleus (5-HTDRN → ARH) projections inhibits food intake driven by hunger via actions at ARH 5-HT2C and 5-HT1B receptors, whereas activation of 5-HTDRN to ventral tegmental area (5-HTDRN → VTA) projections inhibits non-hunger-driven feeding via actions at 5-HT2C receptors. Further, hunger-driven feeding gradually activates ARH-projecting 5-HTDRN …

Genomics And Transcriptomics Landscapes Associated To Changes In Insulin Sensitivity In Response To Endurance Exercise Training, Louise Y. Takeshita, Peter K. Davidsen, John M. Herbert, Philipp Antczak, Matthijs K.C. Hesselink, Patrick Schrauwen, S. John Weisnagel, Jeremy M. Robbins, Robert E. Gerszten, Sujoy Ghosh, Mark A. Sarzynski, Claude Bouchard, Francesco Falciani

Division of Basic Science Faculty Publications

Despite good adherence to supervised endurance exercise training (EET), some individuals experience no or little improvement in peripheral insulin sensitivity. The genetic and molecular mechanisms underlying this phenomenon are currently not understood. By investigating genome-wide variants associated with baseline and exercise-induced changes (∆) in insulin sensitivity index (Si) in healthy volunteers, we have identified novel candidate genes whose mouse knockouts phenotypes were consistent with a causative effect on Si. An integrative analysis of functional genomic and transcriptomic profiles suggests genetic variants have an aggregate effect on baseline Si and ∆Si, focused around cholinergic signalling, including downstream calcium and chemokine signalling. …

Campus Community Invited To ‘Meet The Deans’ Of The Gwu College Of Arts & Sciences, Office Of University Communications

Gardner-Webb NewsCenter Archive

The campus community is invited to “Meet the Deans” of the Gardner-Webb University College of Arts & Sciences (CoA&S) on Thursday, Dec. 2, from 3 to 5 p.m. in Tucker Student Center. Dr. Shawn Holt, dean, and Dr. Jennifer Buckner, recently named associate dean, will greet guests and provide information about the CoA&S. Sweet treats and warm beverages will be served, and fun crafts will also be provided.

The Neglected “R”: Replicability, Replication, And Writing Center Research, Susanne Hall, Holly Ryan

The Writing Center Journal

This article makes an argument for the value of both replicable research and replication research in writing center studies. In their discussion of replicability, the authors argue that writing about empirical research so that this research can be replicated will improve the quality of communication in writing center studies whether or not replication studies are subsequently undertaken. The authors further provide for researchers specific guidance on how to create replicable studies, focusing on best practices for describing data sets and sampling, sharing surveys and interview protocols, detailing coding efforts, establishing infrastructure to share data sets, and writing about statistics. Further, …

College Of Natural Sciences Newsletter, December 2021, College Of Natural Sciences

College of Natural Sciences Newsletters and Reports

Volume 2, Issue 12

Page 1 Dean's Message
Page 2 Awards & Recognition
Page 2 Media Coverage of CNS
Page 3 Media Coverage Cont.
Page 4 Science as Art Competition
Page 5 Open PRAIRIE Data
Page 5 Grants Awarded in CNS

Impact Of Oncotype Dx Testing On Er+ Breast Cancer Treatment And Survival In The First Decade Of Use, Evelien Schaafsma, Baoyi Zhang, Merit Schaafsma, Chun Yip Tong, Lanjing Zhang, Chao Cheng

Dartmouth Scholarship

Background: The Oncotype DX breast recurrence score has been introduced more than a decade ago to aid physicians in determining the need for systemic adjuvant chemotherapy in patients with early-stage, estrogen receptor (ER)+, lymph node-negative breast cancer. Methods: In this study, we utilized data from The Surveillance, Epidemiology, and End Results (SEER) Program to investigate temporal trends in Oncotype DX usage among US breast cancer patients in the first decade after the introduction of the Oncotype DX assay. Results: We found that the use of Oncotype DX has steadily increased in the first decade of use and that this increase …

Natural Regeneration Dynamics And Survival Influenced By Abiotic And Biotic Factors In A Bottomland Hardwood Forest, Lydia J. Voth Rurup

Electronic Theses and Dissertations

Riparian ecosystems are vital to the landscape, providing critical services including water filtration and purification, flood and erosion control, carbon sequestration, biodiversity support, and aesthetic value. Bottomland hardwood forests, however, are threatened by invasive species, land loss/conversion, inconsistent or absence of harvesting disturbances, and altered hydrological patterns, leading to reduced success of desired, native species. This research assessed regeneration dynamics and one-year survival in a seasonally-flooded bottomland hardwood forest at Boggy Slough Conservation Area in East Texas to identify abiotic and biotic factors important for successful establishment of native regeneration. Areas sampled included two that were previously treated with herbicide …

Exploring That Fulbright Magic: A Transcendental Phenomenological Study Of Fulbright-Mescyt Alumni Who Return To The Dominican Republic, Joshabel De La Cruz

Dissertations

International higher education graduates may experience challenges related to reentry to their home countries as their expectations upon returning home may not match their reality (Alandejani, 2013; Butcher, 2002, Gaw, 2000). This study utilizes a transcendental phenomenological approach to understand the lived experiences of seven Fulbright-MESCYT alumni who completed U.S. graduate degree programs and returned home to the Dominican Republic (DR) between 2015 and 2018. The Fulbright-MESCYT Program in the DR is a joint initiative of the U.S. Embassy in Santo Domingo and the Dominican Ministry of Higher Education, Science and Technology (MESCYT) and adds funding for up to 10 …

Structured To Fail: Lessons From The Trump Administration’S Faulty Pandemic Planning And Response, Alejandro E. Camacho, Robert L. Glicksman

Michigan Journal of Environmental & Administrative Law

The Trump Administration’s response to the COVID-19 pandemic is a stark reminder that poorly designed government can be a matter of life and death. This article explains how the Administration’s careless and delayed response to the crisis was made immeasurably worse by its confused and confusing reallocation of authority to perform or supervise tasks essential to reducing the virus’s ravages.

After exploring the rationale for and impact of prior federal reorganizations responding to public health crises, the article shows how a combination of unnecessary and unhelpful overlapping authority and a thoughtless mix of centralized and decentralized authority contributed to the …

A Solution To The Hard Problem Of Soft Law, Keagan Potts

Michigan Journal of Environmental & Administrative Law

Administrative Agencies often rely on guidance documents to carry out their statutory mandate. Over the past few decades, the Food and Drug Administration (FDA) has been criticized for using soft law guidance documents to exercise powers beyond those authorized by Congress. Since attacks on the use of guidance documents persist and agencies need soft law to respond quickly and flexibly to rapid technological growth, it is essential to develop a solution that preserves this crucial regulatory mechanism and prevents its abuse. The most likely alternative to soft law guidance is formal regulation, which must be developed through the notice-and-comment process. …

Degradative Tubular Lysosomes Link Pexophagy To Starvation And Early Aging In C. Elegans, D A. Dolese, M P. Junot, B Ghosh, T J. Butsch, D A. Dolese, K A. Bohnert

Faculty Publications

Organelle-specific autophagy directs degradation of eukaryotic organelles under certain conditions. Like other organelles, peroxisomes are subject to autophagic turnover at lysosomes. However, peroxisome autophagy (pexophagy) has yet to be analyzed in a live-animal system, limiting knowledge on its regulation during an animal's life. Here, we generated a tandem-fluorophore reporter that enabled real-time tracking of pexophagy in live Caenorhabditis elegans. We observed that pexophagy occurred at a population of non-canonical, tubular lysosomes specifically during starvation and aging. Remarkably, in these contexts, tubular lysosomes were the predominant type of lysosome in the intestine, transforming from vesicles. Though we found that peroxisomes were …

The Dynamics Of Introgression Across An Avian Radiation, S Singhal, G E. Derryberry, G A. Bravo, E P. Derryberry, S Singhal, M G. Harvey

Faculty Publications

Hybridization and resulting introgression can play both a destructive and a creative role in the evolution of diversity. Thus, characterizing when and where introgression is most likely to occur can help us understand the causes of diversification dynamics. Here, we examine the prevalence of and variation in introgression using phylogenomic data from a large (1300+ species), geographically widespread avian group, the suboscine birds. We first examine patterns of gene tree discordance across the geographic distribution of the entire clade. We then evaluate the signal of introgression in a subset of 206 species triads using Patterson's D-statistic and test for associations …

Super-Adsorbent Hydrogels For Removal Of Methylene Blue From Aqueous Solution: Dye Adsorption Isotherms, Kinetics, And Thermodynamic Properties, Buddhabhushan Salunkhe, Thomas P. Schuman

Chemistry Faculty Research & Creative Works

Removal of dyes through adsorption from wastewater has gained substantial interest in recent years, especially in development of hydrogel-based adsorbents, owing to their easy use and economical nature. The aim of the present study was to design a super-adsorbent hydrogel based on sodium styrene sulfonate (NaSS) monomer for removal of dyes like methylene blue (MB). NaSS displays both an aromatic ring and strongly ionic group in its monomer structure that can enhance adsorption capacity. Poly (sodium styrene sulfonate-co-dimethylacrylamide) hydrogels were prepared by solution free radical polymerization using gelatin meth acryloyl (GelMA) as crosslinker, creating a highly porous, three-dimensionally crosslinked polymer …

Solid-State Nmr Of Unlabeled Plant Cell Walls: High-Resolution Structural Analysis Without Isotopic Enrichment, Wancheng Zhao, Alex Kirui, Fabien Deligey, Frederic Mentink-Vigier, Yihua Zhou, Baocai Zhang, Tuo Wang

Faculty Publications

© 2021, The Author(s). Background: Multidimensional solid-state nuclear magnetic resonance (ssNMR) spectroscopy has emerged as an indispensable technique for resolving polymer structure and intermolecular packing in primary and secondary plant cell walls. Isotope (13C) enrichment provides feasible sensitivity for measuring 2D/3D correlation spectra, but this time-consuming procedure and its associated expenses have restricted the application of ssNMR in lignocellulose analysis. Results: Here, we present a method that relies on the sensitivity-enhancing technique Dynamic Nuclear Polarization (DNP) to eliminate the need for 13C-labeling. With a 26-fold sensitivity enhancement, a series of 2D 13C–13C correlation spectra were successfully collected using the unlabeled …

Adult Cold Tolerance And Potential North American Distribution Of Myllocerus Undecimpustulatus Undatus (Coleoptera: Curculionidae), Anita S. Neal, Rodrigo Diaz, Jawwad A. Qureshi, Ronald D. Cave

Faculty Publications

Cold tolerance and potential distribution of Myllocerus undecimpustulatus undatus Marshall, a polyphagous pest in the United States, were investigated. Adult survivorship after 2 days at 0 °C and − 5 °C averaged 60% and 18%, respectively. Four days of exposure resulted in survivorship of 11% at 0 °C and 4% at − 5 °C, respectively. Summer-collected weevils at − 5 °C through repeated cold exposure of 2 h survived 3 times longer than those subjected to sustained cold period of 10 h. Leaf consumption did not differ among summer-collected weevils at constant 20 °C and repeated cold exposure treatments; weevils …

Immune-Related Genes Of The Larval Holotrichia Parallela In Response To Entomopathogenic Nematodes Heterorhabditis Beicherriana Lf, Ertao Li, Jianhui Qin, Honglin Feng, Jinqiao Li, Xiaofeng Li, Innocent Nyamwasa, Yazhong Cao, Weibin Ruan, Kebin Li, Jiao Yin

Faculty Publications

Background: Entomopathogenic nematodes (EPNs) emerge as compatible alternatives to conventional insecticides in controlling Holotrichia parallela larvae (Coleoptera: Scarabaeidae). However, the immune responses of H. parallela against EPNs infection remain unclear. Results: In present research, RNA-Seq was firstly performed. A total of 89,427 and 85,741 unigenes were achieved from the midgut of H. parallela larvae treated with Heterorhabditis beicherriana LF for 24 and 72 h, respectively; 2545 and 3156 unigenes were differentially regulated, respectively. Among those differentially expressed genes (DEGs), 74 were identified potentially related to the immune response. Notably, some immune-related genes, such as peptidoglycan recognition protein SC1 (PGRP-SC1), pro-phenoloxidase …

Management Of Stemborers (Lepidoptera: Crambidae) Using Foliar-Applied Chlorantraniliprole In Rice, James M. Villegas, Blake E. Wilson, Michael O. Way

Faculty Publications

Rice is one of the most important crops in Louisiana and Texas, USA. It is subjected to various insect pests throughout the growing season. Lepidopteran stem-boring pests including the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae), are increasing in economic importance as insect pests in rice production, particularly in southwest Louisiana, USA. Field trials were conducted in Louisiana and Texas to examine the efficacy of foliar-applied insecticides (chlorantraniliprole and the pyrethroids ζ-cypermethrin and λ-cyhalothrin) and chlorantraniliprole seed treatment for control of rice stemborers during 2018 and 2019. Furthermore, a diet incorporation assay assessed the toxicity of chlorantraniliprole to laboratory-reared …

Bridgehead Effect And Multiple Introductions Shape The Global Invasion History Of A Termite, Alexander J. Blumenfeld, Pierre André Eyer, Claudia Husseneder, Jianchu Mo, Laura N.L. Johnson, Changlu Wang, J. Kenneth Grace, Thomas Chouvenc, Shichen Wang, Edward L. Vargo

Faculty Publications

Native to eastern Asia, the Formosan subterranean termite Coptotermes formosanus (Shiraki) is recognized as one of the 100 worst invasive pests in the world, with established populations in Japan, Hawaii and the southeastern United States. Despite its importance, the native source(s) of C. formosanus introductions and their invasive pathway out of Asia remain elusive. Using ~22,000 SNPs, we retraced the invasion history of this species through approximate Bayesian computation and assessed the consequences of the invasion on its genetic patterns and demography. We show a complex invasion history, where an initial introduction to Hawaii resulted from two distinct introduction events …

Cardiovascular Disease And Risk Of Incident Diabetes Mellitus: Findings From The Hispanic Community Health Study/Study Of Latinos (Hchs/Sol), Celestin Missikpode, Ramon A. Durazo-Arvizu, Richard S. Cooper, Matthew James OʼBrien, Sheila F. Castaneda, Gregory A. Talavera, Linda C. Gallo, Maria M. Llabre, Marisa J. Perera, Krista M. Perreira, Ana C. Ricardo, Amber Pirzada, James P. Lash, Martha Daviglus

Faculty Publications

Background: Studies have reported an association between prevalent cardiovascular disease (CVD) and risk of diabetes mellitus (DM). However, factors that may explain the association remain unclear. We examined the association of prevalent CVD with incident DM and assessed whether weight gain and medication use may explain the association. Methods: Data from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) Visit 1 (2008-2011) and Visit 2 (2014-2017) were used to compare incidence of DM among individuals with and without self-reported CVD at Visit 1. A total of 1899 individuals with self-reported CVD were matched to controls free of self-reported CVD at …

Association Of Body Composition With Odds Of Breast Cancer By Molecular Subtype: Analysis Of The Mechanisms For Established And Novel Risk Factors For Breast Cancer In Nigerian Women (Mend) Study, Tomi Akinyemiju, Kelley Jones, Anjali Gupta, Taofik Oyekunle, Veeral Saraiya, April Deveaux, Omolola Salako, Allison Hall, Olusegun Alatise, Gabriel Ogun, Adewale Adeniyi, Omobolaji Ayandipo, Thomas Olajide, Olalekan Olasehinde, Olukayode Arowolo, Adewale Adisa, Oludolapo Afuwape, Aralola Olusanya, Aderemi Adegoke, Trygve O. Tollefsbol, Donna Arnett, Samuel Ajayi, Yemi Raji, Timothy Olanrewaju, Charlotte Osafo, Ifeoma Ulasi, Adanze Asinobi, Cheryl A. Winkler, David Burke, Fatiu Arogundade, Ivy Ekem, Jacob Plange-Rhule, Manmak Mamven

Faculty Publications

Background: The association between obesity and breast cancer (BC) has been extensively studied among US, European and Asian study populations, with often conflicting evidence. However, despite the increasing prevalence of obesity and associated conditions in Africa, the continent with the highest age-standardized BC mortality rate globally, few studies have evaluated this association, and none has examined in relation to molecular subtypes among African women. The current analysis examines the association between body composition, defined by body mass index (BMI), height, and weight, and BC by molecular subtype among African women. Methods: We estimated odds ratios (ORs) and 95% confidence intervals …

Whole Genome Comparisons Reveal Panmixia Among Fall Armyworm (Spodoptera Frugiperda) From Diverse Locations, Katrina A. Schlum, Kurt Lamour, Caroline Placidi De Bortoli, Rahul Banerjee, Robert Meagher, Eliseu Pereira, Maria Gabriela Murua, Gregory A. Sword, Ashley E. Tessnow, Diego Viteri Dillon, Angela M. Linares Ramirez, Komivi S. Akutse, Rebecca Schmidt-Jeffris, Fangneng Huang, Dominic Reisig, Scott J. Emrich, Juan Luis Jurat-Fuentes

Faculty Publications

Background: The fall armyworm (Spodoptera frugiperda (J.E. Smith)) is a highly polyphagous agricultural pest with long-distance migratory behavior threatening food security worldwide. This pest has a host range of > 80 plant species, but two host strains are recognized based on their association with corn (C-strain) or rice and smaller grasses (R-strain). The population genomics of the United States (USA) fall armyworm remains poorly characterized to date despite its agricultural threat. Results: In this study, the population structure and genetic diversity in 55 S. frugiperda samples from Argentina, Brazil, Kenya, Puerto Rico and USA were surveyed to further our understanding of …

Environmental Rnai Pathways In The Two-Spotted Spider Mite, Mosharrof Mondal, Jacob Peter, Obrie Scarbrough, Alex Flynt

Faculty Publications

© 2020, The Author(s).

Background:RNA interference (RNAi) regulates gene expression in most multicellular organisms through binding of small RNA effectors to target transcripts. Exploiting this process is a popular strategy for genetic manipulation and has applications that includes arthropod pest control. RNAi technologies are dependent on delivery method with the most convenient likely being feeding, which is effective in some animals while others are insensitive. The two-spotted spider mite, Tetranychus urticae, is prime candidate for developing RNAi approaches due to frequent occurrence of conventional pesticide resistance. Using a sequencing-based approach, the fate of ingested RNAs was explored to …

Functional Anatomy Of The Vagus System – Emphasis On The Somato-Visceral Interface, Winfried L. Neuhuber, Hans Rudolf Berthoud

Division of Basic Science Faculty Publications

Due to its pivotal role in autonomic networks, the vagus attracts continuous interest from both basic scientists and clinicians. In particular, recent advances in vagus nerve stimulation strategies and their application to pathological conditions beyond epilepsy provide a good opportunity to recall basic features of vagal peripheral and central anatomy. In addition to the “classical” vagal brainstem nuclei, i.e., dorsal motor nucleus, nucleus ambiguus and nucleus tractus solitarii, the spinal trigeminal and paratrigeminal nuclei come into play as targets of vagal afferents. On the other hand, the nucleus of the solitary tract receives and integrates not only visceral but also …

Author Correction: Twelve-Month Specific Igg Response To Sars-Cov-2 Receptor-Binding Domain Among Covid-19 Convalescent Plasma Donors In Wuhan (Nature Communications, (2021), 12, 1, (4144), 10.1038/S41467-021-24230-5), Cesheng Li, Ding Yu, Xiao Wu, Hong Liang, Zhijun Zhou, Yong Xie, Taojing Li, Junzheng Wu, Fengping Lu, Lu Feng, Min Mao, Lianzhen Lin, Huanhuan Guo, Shenglan Yue, Feifei Wang, Yan Peng, Yong Hu, Zejun Wang, Jianhong Yu, Yong Zhang, Jia Lu, Haoran Ning, Huichuan Yang, Daoxing Fu, Yanlin He, Dongbo Zhou, Tao Du, Kai Duan, Demei Dong, Kun Deng, Xia Zou, Ya Zhang, Rong Zhou, Yang Gao

Division of Basic Science Faculty Publications

The original version of this Article contained an error in the abstract, which incorrectly read ‘The level of RBD-IgG decreases with time, with the titer stabilizing at 64.3% of the initial level by 9 month’. The correct version replaces this sentence with ‘The level of RBD-IgG decreases with time, with the titer stabilizing at 35.7% of the initial level by the 9th month’. This has been corrected in both the PDF and HTML versions of the Article.

Deciphering An Agrp-Serotoninergic Neural Circuit In Distinct Control Of Energy Metabolism From Feeding, Yong Han, Guobin Xia, Dollada Srisai, Fantao Meng, Yanlin He, Yali Ran, Yang He, Monica Farias, Giang Hoang, István Tóth, Marcelo O. Dietrich, Miao Hsueh Chen, Yong Xu, Qi Wu

Division of Basic Science Faculty Publications

Contrasting to the established role of the hypothalamic agouti-related protein (AgRP) neurons in feeding regulation, the neural circuit and signaling mechanisms by which they control energy expenditure remains unclear. Here, we report that energy expenditure is regulated by a subgroup of AgRP neurons that send non-collateral projections to neurons within the dorsal lateral part of dorsal raphe nucleus (dlDRN) expressing the melanocortin 4 receptor (MC4R), which in turn innervate nearby serotonergic (5-HT) neurons. Genetic manipulations reveal a bi-directional control of energy expenditure by this circuit without affecting food intake. Fiber photometry and electrophysiological results indicate that the thermo-sensing MC4RdlDRN neurons …

A Randomized Clinical Trial On The Effects Of Exercise On Muscle Remodelling Following Bariatric Surgery, Saulo Gil, John P. Kirwan, Igor H. Murai, Wagner S. Dantas, Carlos Alberto Abujabra Merege-Filho, Sujoy Ghosh, Samuel K. Shinjo, Rosa M.R. Pereira, Walcy R. Teodoro, Sheylla M. Felau, Fabiana B. Benatti, Ana L. De Sá-Pinto, Fernanda Lima, Roberto De Cleva, Marco Aurélio Santo, Bruno Gualano, Hamilton Roschel

Division of Basic Science Faculty Publications

Background: Muscle atrophy and strength loss are common adverse outcomes following bariatric surgery. This randomized, controlled trial investigated the effects of exercise training on bariatric surgery-induced loss of muscle mass and function. Additionally, we investigated the effects of the intervention on molecular and histological mediators of muscle remodelling. Methods: Eighty women with obesity were randomly assigned to a Roux-en-Y gastric bypass (RYGB: n = 40, age = 42 ± 8 years) or RYGB plus exercise training group (RYGB + ET: n = 40, age = 38 ± 7 years). Clinical and laboratory parameters were assessed at baseline, and 3 (POST3) …

Overfeeding-Induced Weight Gain Elicits Decreases In Sex Hormone-Binding Globulin In Healthy Males—Implications For Body Fat Distribution, Prachi Singh, Naima Covassin, Fatima H. Sert-Kuniyoshi, Kara L. Marlatt, Abel Romero-Corral, Diane E. Davison, Ravinder J. Singh, Michael D. Jensen, Virend K. Somers

Clinical Research Faculty Publications

Objective: Obesity and upper-body fat elevates cardiometabolic risk. However, mechanisms predisposing to upper-body fat accumulation are not completely understood. In males, low testosterone (T) frequently associates with obesity, and estrogen deficiency may contribute to upper-body adiposity. This study examines the effects of overfeeding-induced weight gain on changes in gonadal hormones in healthy males and its association with regional fat depots. Methods: Twenty-five males (age: 29.7 ± 6.9 years; BMI: 24.7 ± 3.1 kg/m2) were overfed for 8 weeks to gain approximately 5% body weight. Changes in total and regional fat depots were assessed using dual-energy x-ray absorptiometry and abdominal computed …

Impact Of Acute Exercise On Peripheral Blood Mononuclear Cells Nutrient Sensing And Mitochondrial Oxidative Capacity In Healthy Young Adults, Bailey Theall, James Stampley, Eunhan Cho, Joshua Granger, Neil M. Johannsen, Brian A. Irving, Guillaume Spielmann

Clinical Research Faculty Publications

Regular exercise is associated with changes in peripheral blood mononuclear cell (PBMC) proportions that have enhanced effector functions in young and old adults; however, the effects of acute exercise on PBMC nutrient sensors and metabolic function in active young adults is unknown. To fill this gap, activation status and nutrient-sensing mechanisms of PBMCs isolated from 21 healthy active adults (20–35 yr; 36.5 ± 6.3 V̇O2peak) were characterized before and after 30 min of moderate-to-vigorous cycling (65%–75% V̇O2peak). In addition, changes in PBMC mitochondrial respiratory function in response to exercise were assessed using high-resolution respirometry. There was an increase in the …

Obesity And Cancer Death In White And Black Adults: A Prospective Cohort Study, Justin C. Brown, Shengping Yang, Emily F. Mire, Xiaocheng Wu, Lucio Miele, Augusto Ochoa, Jovanny Zabaleta, Peter T. Katzmarzyk

Population and Public Health Science Faculty Publications

Objective: This study aimed to determine whether race modifies the association between obesity and cancer death. Methods: The Pennington Center Longitudinal Study included 18,296 adults; 35.0% were male and 34.3% were Black. The primary end point was death from cancer. Results: During a follow-up of 14.3 years, 346 cancer deaths occurred. Among men, race modified the association of BMI and cancer death (pinteraction = 0.045); compared with a BMI of 22 kg/m², a BMI of 35 in White men was associated with a hazard ratio of 1.74 (95% CI: 1.38-2.21), and in Black men, the hazard ratio was …