Nutrition Commons^™

Randomized Controlled Trial Of A Novel Lifestyle Intervention Used With Or Without Meal Replacements In Work Sites, Sai Krupa Das, Rachel E Silver, Taylor A Vail, Meghan K Chin, Caroline M Blanchard, Stephanie L Dickinson, Xiwei Chen, Lisa Ceglia, Edward Saltzman, David B Allison, Susan B Roberts

Children’s Nutrition Research Center Staff Publications

Objective: Lifestyle interventions have had limited effectiveness in work sites when evaluated in randomized trials. This study assessed the effectiveness of a novel lifestyle intervention for weight loss (Healthy Weight for Living [HWL]) implemented with or without meal replacements (MR) in work sites. HWL used a new behavioral approach emphasizing reducing hunger and building healthy food preferences, and, unlike traditional lifestyle interventions, it did not require calorie counting.

Methods: Twelve work sites were randomized to an 18-month intervention (n = 8; randomization within work sites to HWL, HWL + MR) or 6-month wait-listed control (n = 4). Participants were employees …

Biosynthesis Of Chlorophyll And Other Isoprenoids In The Plastid Of Red Grape Berry Skins, António Teixeira, Henrique Noronha, Sarah Frusciante, Gianfranco Diretto, Hernâni Gerós

Faculty, Staff and Student Publications

Despite current knowledge showing that fruits like tomato and grape berries accumulate different components of the light reactions and Calvin cycle, the role of green tissues in fruits is not yet fully understood. In mature tomato fruits, chlorophylls are degraded and replaced by carotenoids through the conversion of chloroplasts in chromoplasts, while in red grape berries, chloroplasts persist at maturity and chlorophylls are masked by anthocyanins. To study isoprenoid and lipid metabolism in grape skin chloroplasts, metabolites of enriched organelle fractions were analyzed by high-performance liquid chromatography-high-resolution mass spectrometry (HPLC-HRMS) and the expression of key genes was evaluated by real-time …

Pgc-1Α Senses The Cbc Of Pre-Mrna To Dictate The Fate Of Promoter-Proximally Paused Rnapii, Xavier Rambout, Hana Cho, Roméo Blanc, Qing Lyu, Joseph M Miano, Joe V Chakkalakal, Geoffrey M Nelson, Hari K Yalamanchili, Karen Adelman, Lynne E Maquat

Children’s Nutrition Research Center Staff Publications

PGC-1α is well established as a metazoan transcriptional coactivator of cellular adaptation in response to stress. However, the mechanisms by which PGC-1α activates gene transcription are incompletely understood. Here, we report that PGC-1α serves as a scaffold protein that physically and functionally connects the DNA-binding protein estrogen-related receptor α (ERRα), cap-binding protein 80 (CBP80), and Mediator to overcome promoter-proximal pausing of RNAPII and transcriptionally activate stress-response genes. We show that PGC-1α promotes pausing release in a two-arm mechanism (1) by recruiting the positive transcription elongation factor b (P-TEFb) and (2) by outcompeting the premature transcription termination complex Integrator. Using mice …

Noninvasive Reflection Spectroscopy Measurement Of Skin Carotenoid Score In Infants Is Feasible And Reliable, Nancy E Moran, Jocelyn Chang, Rachel Stroh, Yusuf Zaidi, Noor Hason, Salma Musaad, Teresia O'Connor

Children’s Nutrition Research Center Staff Publications

Background: Skin carotenoid measurement by reflection spectroscopy (RS) offers a noninvasive biomarker of carotenoid intake, but feasibility, reliability, and validity are not established in infants.

Objectives: In this study we aimed to determine the feasibility and reliability of 4-mo-old infant skin carotenoid score (SCS) measurement and its correlation with total carotenoid intake and plasma concentrations.

Methods: SCSs were measured in a prospective, observational study with a modified, portable RS device at the index finger and heel of the foot in 4-mo-olds (n = 21). Infant plasma, human milk, and formula carotenoid concentrations were measured by HPLC-photodiode array, and carotenoid intake …

Only One Cluster Per Condition Is An Invalid Design For A Cluster Randomized Trial And Should Be Re-Labeled A Quasi-Experimental Study Response To: “Effect Of Behavioral Activation On Time And Frequency Domain Heart Rate Variability In Older Adults With Subthreshold Depression: A Cluster Randomized Controlled Trial In Thailand”, Yasaman Jamshidi-Naeini, Lilian Golzarri-Arroyo, Abu Bakkar Siddique, Colby J Vorland, David B Allison

Children’s Nutrition Research Center Staff Publications

Ayudhaya et al. examined the effect of Behavioral Activation on daily step count and heart rate variability among older adults with depression in a study labeled a cluster randomized controlled trial (cRCT). However, only one cluster was assigned to either of the study conditions. Such a design would have zero degrees of freedom for inferential testing, because the variation due to cluster membership cannot be estimated apart from the variation due to treatment assignment. Thus, the intervention effect is completely confounded with the cluster effect. The study should be labeled a quasi-experimental study, not a cRCT. Accordingly, the numerical results …

I2n: Image To Nutrients, A Sensor Guided Semi-Automated Tool For Annotation Of Images For Nutrition Analysis Of Eating Episodes, Tonmoy Ghosh, Megan A Mccrory, Tyson Marden, Janine Higgins, Alex Kojo Anderson, Christabel Ampong Domfe, Wenyan Jia, Benny Lo, Gary Frost, Matilda Steiner-Asiedu, Tom Baranowski, Mingui Sun, Edward Sazonov

Children’s Nutrition Research Center Staff Publications

Introduction: Dietary assessment is important for understanding nutritional status. Traditional methods of monitoring food intake through self-report such as diet diaries, 24-hour dietary recall, and food frequency questionnaires may be subject to errors and can be time-consuming for the user.

Methods: This paper presents a semi-automatic dietary assessment tool we developed - a desktop application called Image to Nutrients (I2N) - to process sensor-detected eating events and images captured during these eating events by a wearable sensor. I2N has the capacity to offer multiple food and nutrient databases (e.g., USDA-SR, FNDDS, USDA Global Branded Food Products Database) for annotating eating …

Small Bowel Obstruction In Postpartum Vaginal Delivery Due To Prior Abdominal Adhesions Case Report, Liubin Yang, Lydia Kao

Children’s Nutrition Research Center Staff Publications

Intestinal obstruction rarely occurs after uncomplicated vaginal deliveries. Here, we present a case of a multiparous woman with a history of prior appendectomy presenting with generalized, nonspecific abdominal pain that was out of proportion to exam findings. Initial abdominal X-ray was nonspecific, and subsequent computed tomography (CT) abdomen showed closed small bowel obstruction requiring surgical repair. We present a case of intestinal obstruction occurring within 24 hours of uncomplicated vaginal delivery with a risk factor of a prior appendectomy surgery and the use of CT abdomen and pelvis to expedite diagnose.

Commentary: Effect Evaluation Of Sahtak Bi Sahnak, A Lebanese Secondary School-Based Nutrition Intervention: A Cluster Randomised Trial, Abu Bakkar Siddique, Andrew W Brown, Lilian Golzarri-Arroyo, David B Allison

Children’s Nutrition Research Center Staff Publications

No abstract provided.

A Coalition-Driven Examination Of Organization Capacity To Address Food Insecurity In Greater Houston: A Qualitative Research Study, Jemima C John, Jennifer Gonzalez, Sara-Grace Chan, Heidi Mcpherson, Jennifer N Aiyer, Esperanza Galvan, Nicole Browning, Shreela V Sharma

Faculty, Staff and Student Publications

BACKGROUND: Economic and social hardships have worsened food insecurity, particularly among low income and racial-ethnic minority groups. Given the core goal of the 150+ member Houston Health Equity Collective (HEC) to reduce food insecurity by 5% in 2025, we explored member organizations' capacity and challenges faced in screening and responding to food insecurity through care coordination efforts.

METHODS: A twice-administered Qualtrics XM survey (Provo, Utah) with 76 organizations, followed by five focus groups with 22 of these organizations, explored reach and response efforts to food insecurity. Qualitative assessments lasted between 0.5 to 1.5 h, were audio-recorded, cleaned, coded, and thematically …

Examining Neighborhood-Level Hot And Cold Spots Of Food Insecurity In Relation To Social Vulnerability In Houston, Texas, Ryan Ramphul, Linda Highfield, Shreela Sharma

Faculty, Staff and Student Publications

Food insecurity is prevalent and associated with poor health outcomes, but little is known about its geographical nature. The aim of this study is to utilize geospatial modeling of individual-level food insecurity screening data ascertained in health care settings to test for neighborhood hot and cold spots of food insecurity in a large metropolitan area, and then compare these hot spot neighborhoods to cold spot neighborhoods in terms of the CDC's Social Vulnerability Index. In this cross-sectional secondary data analysis, we geocoded the home addresses of 6,749 unique participants screened for food insecurity at health care locations participating in CMS's …

Relationship Between Reproductive And Bone Biomarkers And Osteoarthritis In Zoo Asian (Elephas Maximus) And African (Loxodonta Africana) Elephants, Daniella E Chusyd, Janine L Brown, Lilian Golzarri-Arroyo, Stephanie L Dickinson, Virginia B Kraus, Jessica Siegal-Willott, Timothy M Griffin, Janet L Huebner, Katie L Edwards, David B Allison, Steven N Austad

Children’s Nutrition Research Center Staff Publications

Osteoarthritis (OA) is common in zoo Asian (Elephas maximus) and African (Loxodonta africana) elephants. This study investigated the relationship between confirmed or suspected OA with ovarian cyclicity, gonadotropins, progestagens, luteinizing hormone (LH), follicular stimulating hormone (FSH), and collagen type I (CTX-I) in zoo elephants. In Asian elephants, odds of having confirmed or suspected OA decreased with cycling (OR = 0.22, P = 0.016; OR = 0.29, P = 0.020, respectively), however, not when adjusted for age (odds ratio [OR] = 0.31, P = 0.112; OR = 0.58, P = 0.369, respectively). In African elephants, none of …

Conditioning On Parental Mating Types Can Reduce Necessary Assumptions For Mendelian Randomization, Keisuke Ejima, Nianjun Liu, Luis Miguel Mestre, Gustavo De Los Campos, David B Allison

Children’s Nutrition Research Center Staff Publications

Mendelian randomization (MR) has become a common tool used in epidemiological studies. However, when confounding variables are correlated with the instrumental variable (in this case, a genetic/variant/marker), the estimation can remain biased even with MR. We propose conditioning on parental mating types (a function of parental genotypes) in MR to eliminate the need for one set of assumptions, thereby plausibly reducing such bias. We illustrate a situation in which the instrumental variable and confounding variables are correlated using two unlinked diallelic genetic loci: one, an instrumental variable and the other, a confounding variable. Assortative mating or population admixture can create …

A Conserved Oxalyl-Coenzyme A Decarboxylase In Oxalate Catabolism, Ninghui Cheng, Vincent Paris, Xiaolan Rao, Xiaoqiang Wang, Paul A Nakata

Children’s Nutrition Research Center Staff Publications

The ability to biosynthesize oxalic acid can provide beneficial functions to plants; however, uncontrolled or prolonged exposure to this strong organic acid results in multiple physiological problems. Such problems include a disruption of membrane integrity, mitochondrial function, metal chelation, and free radical formation. Recent work suggests that a CoA-dependent pathway of oxalate catabolism plays a critical role in regulating tissue oxalate concentrations in plants. Although this CoA-dependent pathway of oxalate catabolism is important, large gaps in our knowledge of the enzymes catalyzing each step remain. Evidence that an oxalyl-CoA decarboxylase (OXC) catalyzes the second step in this pathway, accelerating the …

Does Receiving A Sars-Cov-2 Antibody Test Result Change Covid-19 Protective Behaviors? Testing Risk Compensation In Undergraduate Students With A Randomized Controlled Trial, Christina Ludema, Molly S Rosenberg, Jonathan T Macy, Sina Kianersi, Maya Luetke, Chen Chen, Lilian Golzarri-Arroyo, Erin Ables, Kevin Maki, David B Allison

Children’s Nutrition Research Center Staff Publications

Background: Risk compensation, or matching behavior to a perceived level of acceptable risk, can blunt the effectiveness of public health interventions. One area of possible risk compensation during the SARS-CoV-2 pandemic is antibody testing. While antibody tests are imperfect measures of immunity, results may influence risk perception and individual preventive actions. We conducted a randomized control trial to assess whether receiving antibody test results changed SARS-CoV-2 protective behaviors.

Purpose: Assess whether objective information about antibody status, particularly for those who are antibody negative and likely still susceptible to SARS-CoV-2 infection, increases protective behaviors. Secondarily, assess whether a positive antibody test …

Evaluation Of Recombinant Live-Attenuated Respiratory Syncytial Virus (Rsv) Vaccines Rsv/Δns2/Δ1313/I1314l And Rsv/276 In Rsv-Seronegative Children, Coleen K Cunningham, Ruth A Karron, Petronella Muresan, Matthew S Kelly, Elizabeth J Mcfarland, Charlotte Perlowski, Jennifer Libous, Jennifer Oliva, Patrick Jean-Philippe, Jack Moye, Elizabeth Schappell, Emily Barr, Vivian Rexroad, Benjamin Johnston, Ellen G Chadwick, Mikhaela Cielo, Mary Paul, Jaime G Deville, Mariam Aziz, Lijuan Yang, Cindy Luongo, Peter L Collins, Ursula J Buchholz, International Maternal Pediatric Adolescent Aids Clinical Trials (Impaact) 2018 Study Team

Children’s Nutrition Research Center Staff Publications

Background: This United States-based study compared 2 candidate vaccines: RSV/ΔNS2/Δ1313/I1314L, attenuated by NS2 gene-deletion and temperature-sensitivity mutation in the polymerase gene; and RSV/276, attenuated by M2-2 deletion.

Methods: RSV-seronegative children aged 6-24 months received RSV/ΔNS2/Δ1313/I1314L (106 plaque-forming units [PFU]), RSV/276 (105 PFU), or placebo intranasally. Participants were monitored for vaccine shedding, reactogenicity, and RSV serum antibodies, and followed over the subsequent RSV season.

Results: Enrollment occurred September 2017 to October 2019. During 28 days postinoculation, upper respiratory illness and/or fever occurred in 64% of RSV/ΔNS2/Δ1313/I1314L, 84% of RSV/276, and 58% of placebo recipients. Symptoms were generally mild. Cough was more …

Human Loss-Of-Function Variants In The Serotonin 2c Receptor Associated With Obesity And Maladaptive Behavior, Yang He, Bas Brouwers, Hesong Liu, Hailan Liu, Katherine Lawler, Edson Mendes De Oliveira, Dong-Kee Lee, Yongjie Yang, Aaron R Cox, Julia M Keogh, Elana Henning, Rebecca Bounds, Aliki Perdikari, Vikram Ayinampudi, Chunmei Wang, Meng Yu, Longlong Tu, Nan Zhang, Na Yin, Junying Han, Nikolas A Scarcelli, Zili Yan, Kristine M Conde, Camille Potts, Jonathan C Bean, Mengjie Wang, Sean M Hartig, Lan Liao, Jianming Xu, Inês Barroso, Jacek Mokrosinski, Yong Xu, I Sadaf Farooqi

Children’s Nutrition Research Center Staff Publications

Serotonin reuptake inhibitors and receptor agonists are used to treat obesity, anxiety and depression. Here we studied the role of the serotonin 2C receptor (5-HT2CR) in weight regulation and behavior. Using exome sequencing of 2,548 people with severe obesity and 1,117 control individuals without obesity, we identified 13 rare variants in the gene encoding 5-HT2CR (HTR2C) in 19 unrelated people (3 males and 16 females). Eleven variants caused a loss of function in HEK293 cells. All people who carried variants had hyperphagia and some degree of maladaptive behavior. Knock-in male mice harboring a human loss-of-function HTR2C variant developed …

Dietary And Complementary Feeding Practices Of Us Infants, 6 To 12 Months: A Narrative Review Of The Federal Nutrition Monitoring Data, Regan L Bailey, Jaime S Stang, Teresa A Davis, Timothy S Naimi, Barbara O Schneeman, Kathryn G Dewey, Sharon M Donovan, Rachel Novotny, Ronald E Kleinman, Elsie M Taveras, Lydia Bazzano, Linda G Snetselaar, Janet De Jesus, Kellie O Casavale, Eve E Stoody, Joseph D Goldman, Alanna J Moshfegh, Donna G Rhodes, Kirsten A Herrick, Kristin Koegel, Cria G Perrine, Tusarebecca Pannucci

Children’s Nutrition Research Center Staff Publications

Complementary foods and beverages (CFBs) are key components of an infant’s diet in the second 6 months of life. This article summarizes nutrition and feeding practices examined by the 2020 Dietary Guidelines Advisory Committees during the CFB life stage. Breastfeeding initiation is high (84%), but exclusive breastfeeding at 6 months (26%) is below the Healthy People 2030 goal (42%). Most infants (51%) are introduced to CFBs sometime before 6 months. The primary mode of feeding (ie, human milk fed [HMF]; infant formula or mixed formula and human milk fed [FMF]) at the initiation of CFBs is associated with the timing …

International Pooled Patient-Level Meta-Analysis Of Ketamine Infusion For Depression: In Search Of Clinical Moderators, Rebecca B Price, Nicholas Kissel, Andrew Baumeister, Rebecca Rohac, Mary L Woody, Elizabeth D Ballard, Carlos A Zarate, William Deakin, Chadi G Abdallah, Adriana Feder, Dennis S Charney, Michael F Grunebaum, J John Mann, Sanjay J Mathew, Bronagh Gallagher, Declan M Mcloughlin, James W Murrough, Suresh Muthukumaraswamy, Rebecca Mcmillan, Rachael Sumner, George Papakostas, Maurizio Fava, Rebecca Hock, Jennifer L Phillips, Pierre Blier, Paulo Shiroma, Peter Šóš, Tung-Ping Su, Mu-Hong Chen, Mikael Tiger, Johan Lundberg, Samuel T Wilkinson, Meredith L Wallace

Children’s Nutrition Research Center Staff Publications

Depression is disabling and highly prevalent. Intravenous (IV) ketamine displays rapid-onset antidepressant properties, but little is known regarding which patients are most likely to benefit, limiting personalized prescriptions. We identified randomized controlled trials of IV ketamine that recruited individuals with a relevant psychiatric diagnosis (e.g., unipolar or bipolar depression; post-traumatic stress disorder), included one or more control arms, did not provide any other study-administered treatment in conjunction with ketamine (although clinically prescribed concurrent treatments were allowable), and assessed outcome using either the Montgomery-Åsberg Depression Rating Scale or the Hamilton Rating Scale for Depression (HRSD-17). Individual patient-level data for at least …

Randomization, Design And Analysis For Interdependency In Aging Research: No Person Or Mouse Is An Island, Daniella E Chusyd, Steven N Austad, Stephanie L Dickinson, Keisuke Ejima, Gary L Gadbury, Lilian Golzarri-Arroyo, Richard J Holden, Yasaman Jamshidi-Naeini, Doug Landsittel, Tapan Mehta, J Michael Oakes, Arthur H Owora, Greg Pavela, Javier Rojo, Michael W Sandel, Daniel L Smith, Colby J Vorland, Pengcheng Xun, Roger Zoh, David B Allison

Children’s Nutrition Research Center Staff Publications

Investigators traditionally use randomized designs and corresponding analysis procedures to make causal inferences about the effects of interventions, assuming independence between an individual's outcome and treatment assignment and the outcomes of other individuals in the study. Often, such independence may not hold. We provide examples of interdependency in model organism studies and human trials and group effects in aging research and then discuss methodologic issues and solutions. We group methodologic issues as they pertain to (1) single-stage individually randomized trials; (2) cluster-randomized controlled trials; (3) pseudo-cluster-randomized trials; (4) individually randomized group treatment; and (5) two-stage randomized designs. Although we present …

Variation In Human Water Turnover Associated With Environmental And Lifestyle Factors, Yosuke Yamada, Xueying Zhang, Mary E T Henderson, Hiroyuki Sagayama, Herman Pontzer, Daiki Watanabe, Tsukasa Yoshida, Misaka Kimura, Philip N Ainslie, Lene F Andersen, Liam J Anderson, Lenore Arab, Issad Baddou, Kweku Bedu-Addo, Ellen E Blaak, Stephane Blanc, Alberto G Bonomi, Carlijn V C Bouten, Pascal Bovet, Maciej S Buchowski, Nancy F Butte, Stefan G Camps, Graeme L Close, Jamie A Cooper, Richard Cooper, Sai Krupa Das, Lara R Dugas, Simon Eaton, Ulf Ekelund, Sonja Entringer, Terrence Forrester, Barry W Fudge, Annelies H Goris, Michael Gurven, Lewis G Halsey, Catherine Hambly, Asmaa El Hamdouchi, Marije B Hoos, Sumei Hu, Noorjehan Joonas, Annemiek M Joosen, Peter Katzmarzyk, Kitty P Kempen, William E Kraus, Wantanee Kriengsinyos, Robert F Kushner, Estelle V Lambert, William R Leonard, Nader Lessan, Corby K Martin, Anine C Medin, Erwin P Meijer, James C Morehen, James P Morton, Marian L Neuhouser, Theresa A Nicklas, Robert M Ojiambo, Kirsi H Pietiläinen, Yannis P Pitsiladis, Jacob Plange-Rhule, Guy Plasqui, Ross L Prentice, Roberto A Rabinovich, Susan B Racette, David A Raichlen, Eric Ravussin, Leanne M Redman, John J Reilly, Rebecca M Reynolds, Susan B Roberts, Albertine J Schuit, Luis B Sardinha, Analiza M Silva, Anders M Sjödin, Eric Stice, Samuel S Urlacher, Giulio Valenti, Ludo M Van Etten, Edgar A Van Mil, Jonathan C K Wells, George Wilson, Brian M Wood, Jack A Yanovski, Alexia J Murphy-Alford, Cornelia U Loechl, Amy H Luke, Jennifer Rood, Klaas R Westerterp, William W Wong, Motohiko Miyachi, Dale A Schoeller, John R Speakman

Children’s Nutrition Research Center Staff Publications

Water is essential for survival, but one in three individuals worldwide (2.2 billion people) lack access to safe drinking water. Water intake requirements largely reflect water turnover (WT), the water used by the body each day. We investigated the determinants of human WT in 5,604 people from the ages of 8 days to 96 years from 26 countries using isotope tracking (2H) methods. Age, body size, and composition were significantly associated with WT as were physical activity, athletic status, pregnancy, socioeconomic status, and environmental characteristics (latitude, altitude, air temperature, and humidity). People in countries with low human development index (HDI) …

From Model Organisms To Humans, The Opportunity For More Rigor In Methodologic And Statistical Analysis, Design, And Interpretation Of Aging And Senescence Research, Daniella E Chusyd, Steven N Austad, Andrew W Brown, Xiwei Chen, Stephanie L Dickinson, Keisuke Ejima, David Fluharty, Lilian Golzarri-Arroyo, Richard Holden, Yasaman Jamshidi-Naeini, Doug Landsittel, Stella Lartey, Edward Mannix, Colby J Vorland, David B Allison

Children’s Nutrition Research Center Staff Publications

This review identifies frequent design and analysis errors in aging and senescence research and discusses best practices in study design, statistical methods, analyses, and interpretation. Recommendations are offered for how to avoid these problems. The following issues are addressed: (a) errors in randomization, (b) errors related to testing within-group instead of between-group differences, (c) failing to account for clustering, (d) failing to consider interference effects, (e) standardizing metrics of effect size, (f) maximum life-span testing, (g) testing for effects beyond the mean, (h) tests for power and sample size, (i) compression of morbidity versus survival curve squaring, and (j) other …

Increased Circulating Cortisol After Vaginal Birth Is Associated With Increased Fgf19 Secretion In Neonatal Pigs, Caitlin Vonderohe, Gregory Guthrie, Barbara Stoll, Valeria Melendez Hebib, Harry Dawson, Douglas Burrin

Children’s Nutrition Research Center Staff Publications

The influence of birth modality (scheduled cesarean or spontaneous vaginal) on the development of the newborn has been a source of controversy in neonatology. The impact of cesarean vs vaginal birth on the development of bile acid and fibroblast growth factor 19 (FGF19) signaling is unknown. Our aim was to determine the effect of birth modality and gestational age (preterm vs term) on plasma hormone levels, bile acid pool distribution, expression of genes in the bile acid-FXR-FGF19 pathway, and plasma levels of FGF19 at birth and on day 3 of life in neonatal pigs. Four sows underwent cesarean delivery on …

Technology-Based Obesity Prevention Interventions Among Hispanic Adolescents In The United States: Scoping Review, Erica G Soltero, Callie Lopez, Edith Hernandez, Teresia M O'Connor, Debbe Thompson

Children’s Nutrition Research Center Staff Publications

Background: Given that today's adolescents are digital front-runners, technology-based obesity prevention strategies are age-appropriate for this population. The use of remote and wireless technologies may be suitable for extending the reach and engagement of obesity prevention efforts among high-risk Hispanic youths, as this subgroup is disproportionately affected by barriers that limit participation in traditional, in-person interventions.

Objective: The purpose of this scoping review was to examine the intervention and sample characteristics of technology-based obesity prevention interventions among Hispanic adolescents. We also examined feasibility criteria to assess the acceptability and appropriateness of technology-based strategies among Hispanic youths.

Methods: A comprehensive search …

Haploinsufficiency Of Cyp8b1 Associates With Increased Insulin Sensitivity In Humans, Shiqi Zhong, Raphael Chèvre, David Castaño Mayan, Maria Corlianò, Blake J Cochran, Kai Ping Sem, Theo H Van Dijk, Jianhe Peng, Liang Juin Tan, Siddesh V Hartimath, Boominathan Ramasamy, Peter Cheng, Albert K Groen, Folkert Kuipers, Julian L Goggi, Chester Drum, Rob M Van Dam, Ru San Tan, Kerry-Anne Rye, Michael R Hayden, Ching-Yu Cheng, Shaji Chacko, Jason Flannick, Xueling Sim, Hong Chang Tan, Roshni R Singaraja

Children’s Nutrition Research Center Staff Publications

BACKGROUND

Cytochrome P450 family 8 subfamily B member 1 (CYP8B1) generates 12α-hydroxylated bile acids (BAs) that are associated with insulin resistance in humans.

METHODS

To determine whether reduced CYP8B1 activity improves insulin sensitivity, we sequenced CYP8B1 in individuals without diabetes and identified carriers of complete loss-of-function (CLOF) mutations utilizing functional assays.

RESULTS

Mutation carriers had lower plasma 12α-hydroxylated/non–12α-hydroxylated BA and cholic acid (CA)/chenodeoxycholic acid (CDCA) ratios compared with age-, sex-, and BMI-matched controls. During insulin clamps, hepatic glucose production was suppressed to a similar magnitude by insulin, but glucose infusion rates to maintain euglycemia were higher in mutation carriers, indicating …

Accounting For The Clustering And Nesting Effects Verifies Most Conclusions Corrected Analysis Of: “Randomized Nutrient Bar Supplementation Improves Exercise-Associated Changes In Plasma Metabolome In Adolescents And Adult Family Members At Cardiometabolic Risk”, Yasaman Jamshidi-Naeini, Lilian Golzarri-Arroyo, Colby J Vorland, Andrew W Brown, Stephanie Dickinson, David B Allison

Children’s Nutrition Research Center Staff Publications

In a published randomized controlled trial, household units were randomized to a nutrient bar supplementation group or a control condition, but the non-independence of observations within the same household (i.e., the clustering effect) was not accounted for in the statistical analyses. Therefore, we reanalyzed the data appropriately by adjusting degrees of freedom using the between-within method, and accounting for household units using linear mixed effect models with random intercepts for family units and subjects nested within family units for each reported outcome. Results from this reanalysis showed that ignoring the clustering and nesting effects in the original analyses had resulted …

The Family Level Assessment Of Screen Use-Mobile Approach: Development Of An Approach To Measure Children's Mobile Device Use, Oriana Perez, Anil Kumar Vadathya, Alicia Beltran, R Matthew Barnett, Olivia Hindera, Tatyana Garza, Salma M Musaad, Tom Baranowski, Sheryl O Hughes, Jason A Mendoza, Ashutosh Sabharwal, Ashok Veeraraghavan, Teresia M O'Connor

Children’s Nutrition Research Center Staff Publications

Background: There is a strong association between increased mobile device use and worse dietary habits, worse sleep outcomes, and poor academic performance in children. Self-report or parent-proxy report of children's screen time has been the most common method of measuring screen time, which may be imprecise or biased.

Objective: The objective of this study was to assess the feasibility of measuring the screen time of children on mobile devices using the Family Level Assessment of Screen Use (FLASH)-mobile approach, an innovative method that leverages the existing features of the Android platform.

Methods: This pilot study consisted of 2 laboratory-based observational …

Diabetes-Related Worries And Coping Among Youth And Young Adults With Type 1 Diabetes, Lindsay Taraban, Rachel Wasserman, Viena T Cao, Sahar S Eshtehardi, Barbara J Anderson, Debbe Thompson, David G Marrero, Marisa E Hilliard

Children’s Nutrition Research Center Staff Publications

Objective: Although mood and anxiety symptoms are common in youth with type 1 diabetes (T1D), little research has described their worries across developmental stages or the strategies they use to cope with these worries. This secondary data analysis aimed to describe and characterize common T1D-related worries and coping strategies from middle childhood through young adulthood.

Methods: Twenty-three youth (9 children, 7 adolescents, and 7 young adults) completed semistructured qualitative interviews about health-related quality of life. We coded interview transcripts using thematic analysis to generate common themes of diabetes-related worries and coping strategies.

Results: Participants' worries fell into four major themes: …

Sk3 In Pomc Neurons Plays A Sexually Dimorphic Role In Energy And Glucose Homeostasis, Meng Yu, Jonathan C Bean, Hailan Liu, Yang He, Yongjie Yang, Xing Cai, Kaifan Yu, Zhou Pei, Hesong Liu, Longlong Tu, Kristine M Conde, Mengjie Wang, Yongxiang Li, Na Yin, Nan Zhang, Junying Han, Nikolas A Scarcelli, Pingwen Xu, Yanlin He, Yong Xu, Chunmei Wang

Children’s Nutrition Research Center Staff Publications

Background: Pro-opiomelanocortin (POMC) neurons play a sexually dimorphic role in body weight and glucose balance. However, the mechanisms for the sex differences in POMC neuron functions are not fully understood.

Results: We detected small conductance calcium-activated potassium (SK) current in POMC neurons. Secondary analysis of published single-cell RNA-Seq data showed that POMC neurons abundantly express SK3, one SK channel subunit. To test whether SK3 in POMC neurons regulates POMC neuron functions on energy and glucose homeostasis, we used a Cre-loxP strategy to delete SK3 specifically from mature POMC neurons. POMC-specific deletion of SK3 did not affect body weight in either …

Biogenesis And Regulatory Roles Of Circular Rnas, Li Yang, Jeremy E Wilusz, Ling-Ling Chen

Children’s Nutrition Research Center Staff Publications

Covalently closed, single-stranded circular RNAs can be produced from viral RNA genomes as well as from the processing of cellular housekeeping noncoding RNAs and precursor messenger RNAs. Recent transcriptomic studies have surprisingly uncovered that many protein-coding genes can be subjected to backsplicing, leading to widespread expression of a specific type of circular RNAs (circRNAs) in eukaryotic cells. Here, we discuss experimental strategies used to discover and characterize diverse circRNAs at both the genome and individual gene scales. We further highlight the current understanding of how circRNAs are generated and how the mature transcripts function. Some circRNAs act as noncoding RNAs …

Racial And Ethnic Differences In The Association Of Low-Carbohydrate Diet With Mortality In The Multi-Ethnic Study Of Atherosclerosis, Seung-Won Oh, Alexis C Wood, Seung-Sik Hwang, Matthew Allison

Children’s Nutrition Research Center Staff Publications

Importance: Evidence linking low-carbohydrate diets (LCDs) to mortality is limited among multiethnic populations.

Objective: To evaluate the association between LCDs and mortality by race and ethnicity.

Design, setting, and participants: The Multi-Ethnic Study of Atherosclerosis is a large, population-based prospective cohort study of adults aged 45 to 84 years recruited from 6 US communities. A total of 6109 participants without baseline cardiovascular disease were included in this analysis. Baseline data were collected from July 2000 to August 2002, with follow-up completed by December 2017. The data were analyzed between May 2021 and April 2022.

Exposures: Food frequency questionnaires were used …