Digital Commons Network^™

Non-Enzymatic Hepatic Abhd6 Interacts With Akt-Foxo1 Axis To Regulate Metabolic Health, Guannan Li, Laurence T Maeyens, Jiyuan Yin, Jan-Bernd Funcke, Chanmin Joung, Ruizhen Li, Ziying Xu, Ting Wu, Xin Li, Nisi Jiang, Mbolle Ekane, Maria Paula Lopez, Pengju Cao, Sijia He, Adam B Salmon, S R Murthy Madiraju, Marc Prentki, Juli Bai, James F Nelson, Xianlin Han, Yi Zhu, Shangang Zhao

Children’s Nutrition Research Center Staff Publications

The enzymatic role of ABHD6 in insulin secretion and resistance is well documented. However, its non-enzymatic function, especially its effects on metabolic health, including selective hepatic insulin resistance and metabolic dysfunction-associated steatotic liver disease (MASLD), is poorly understood. To define the role of ABHD6 in liver physiology, we generated liver-specific ABHD6 knockout mice, as well as liver-specific native and enzymatically inactive mutant ABHD6 overexpression mouse models. We demonstrate that non-enzymatic ABHD6 contributes to the regulation of selective hepatic insulin resistance and MASLD progression. Mechanistically, we show that ABHD6 localizes to the nucleus and interacts with Akt/FoxO1 axis to regulate insulin …

Nutrition Considerations In Youth With Type 2 Diabetes Using Glucagon-Like Peptide-1 Receptor Agonists: A Commentary, Maria E Diaz, Grace Kim, Mili Vakharia

Faculty, Staff and Students Publications

No abstract provided.

Dupilumab Versus Placebo In Adults And Adolescents With Eosinophilic Gastritis (Degas): A Double-Blind, Placebo-Controlled, Phase 2, Multicentre, Randomised Controlled Trial, Nirmala P Gonsalves, Evan S Dellon, Kara L Kliewer, Tetsuo Shoda, Regina Yearout, Seema S Aceves, Nicoleta C Arva, John A Besse, Julie M Caldwell, Mirna Chehade, Amaziah Coleman, Margaret H Collins, Sara Anvari, Gary W Falk, Sandeep K Gupta, Girish Hiremath, David A Katzka, Paneez Khoury, John Leung, Calies Menard-Katcher, Paul Menard-Katcher, Kathryn A Peterson, Maria A Pletneva, Amanda K Rudman Spergel, Jonathan M Spergel, Tatyana Vaysman, Joshua B Wechsler, Benjamin L Wright, Guang-Yu Yang, Xue Zhang, Meijian Zhou, Ashish Bansal, Bram P Raphael, Amr Radwan, Jennifer Maloney, Antonio Martin, Yamo Deniz, Glenn T Furuta, Lisa J Martin, Marc E Rothenberg

Faculty, Staff and Students Publications

Background: Eosinophilic gastritis currently has no approved treatments and is postulated to be driven by type 2 inflammation. Dupilumab blocks type 2 cytokines IL-4 and IL-13 and has efficacy in multiple diseases characterised by type 2 inflammation, including eosinophilic oesophagitis. We aimed to assess the efficacy and safety of dupilumab in patients with eosinophilic gastritis.

Methods: DEGAS was a proof-of-concept, phase 2, multicentre, randomised controlled trial consisting of a 12-week, double-blind, placebo-controlled period, followed by a 24-week open-label extension period. Patients aged 12-70 years from 11 hospitals in the USA with histologically active eosinophilic gastritis (≥30 eosinophils per high-power field …

Colocalization Of Eqtls With Type 2 Diabetes And Glycemic Traits Using Whole-Genome Sequences In Diverse Populations From The Nhlbi Trans-Omics In Precision Medicine (Topmed) Program, Ningyuan Wang, Daniel A Dicorpo, Yixin Zhang, Erica Kleinbrink, Donna K Arnett, John Barnard, John Blangero, Donald W Bowden, April P Carson, Yii-Der Ida Chen, Mina K Chung, Joanne E Curran, Dawood Darbar, Ravindranath Duggirala, Patrick T Ellinor, Diane Fatkin, Myriam Fornage, Nancy Heard-Costa, Jiang He, Lifang Hou, Sharon L R Kardia, Charles Kooperberg, Ruth J F Loos, David D Mcmanus, Braxton D Mitchell, Ryan L Minster, Kari E North, Bruce M Psaty, Laura M Raffield, Susan Redline, Stephen S Rich, Dan Roden, Jerome I Rotter, Moore B Shoemaker, Jonathan D Smith, David R Van Wagoner, Francois Aguet, Kristin Ardlie, Joshua C Bis, Jennifer A Brody, Brian E Cade, Clary B Clish, Paul S De Vries, James S Floyd, Barry I Freedman, Stacey Gabriel, Robert E Gerzsten, Mark O Goodarzi, Charles Gu, Xiuqing Guo, Namrata Gupta, Susan R Heckbert, Sarah Hsu, Yi-Jen Hung, Rita R Kalyani, Tanika N Kelly, Gregory L Kinney, Changwei Li, Simin Liu, Yongmei Liu, Donald M Lloyd-Jones, Joann E Manson, Rasika A Mathias, Josep M Mercader, Alanna C Morrison, Take Naseri, Suna Onengut, Nicholette D Palmer, Patricia A Peyser, Qibin Qi, Sridharan Raghavan, Alex P Reiner, Mary R Rooney, Magdalena Sevilla-Gonzalez, Chloe Sarnowski, Joshua D Smith, Jennifer A Smith, Nicole L Spartano, Usman Tahir, Kent D Taylor, Deirdre K Tobias, Russel P Tracy, Satupa'itea Viali, Heming Wang, Alexis C Wood, Lisa R Yanek, Wei Zhao, Yinan Zheng, Josée Dupuis, Ching-Ti Liu, Robert Sladek, Jennifer Wessel, James B Meigs, Alisa K Manning, Nhlbi Trans-Omics For Precision Medicine (Topmed) Consortium

Faculty, Staff and Students Publications

Large-scale multiancestry genome-wide association studies have identified hundreds of loci associated with type 2 diabetes (T2D) and glycemic traits, yet imputed genotyping arrays limit the detection of low-frequency and rare variants. Whole-genome sequencing (WGS) offers a more complete view of genetic variation, especially across diverse populations. We analyzed high-coverage (38×) WGS data from 21,913 T2D case subjects, 61,036 control subjects, and up to 50,011 individuals with no diabetes with fasting glucose, fasting insulin, and HbA1c from the National Heart, Lung, and Blood Institute Trans-Omics for Precision Medicine Program. We performed single-variant association testing, conditional analysis, fine-mapping, and Bayesian colocalization to …

Proteomic Signatures Of 3-Year Progression From Impaired Fasting Glucose To Diabetes: The Atherosclerosis Risk In Communities (Aric) Study, Mary R Rooney, Justin B Echouffo Tcheugui, Jingsha Chen, Keenan A Walker, Christie M Ballantyne, Eric Boerwinkle, Tanika N Kelly, Chiadi E Ndumele, James S Pankow, Morgan E Grams, Wendy S Post, Peter J Ganz, Alexis C Wood, Jerome I Rotter, Elizabeth Selvin, Josef Coresh

Faculty, Staff and Students Publications

Objective: To identify proteomic signatures underlying 3-year progression from impaired fasting glucose (IFG) to diabetes.

Research design and methods: We examined IFG progression in the Atherosclerosis Risk in Communities (ARIC) study from visit 2 (1990-1992) to visit 3 (1993-1995). We tested associations of 4,955 plasma proteins (SomaScan version 4.0) with ∼3-year progression from IFG (FG 100-125 mg/dL without diabetes) to diabetes (diagnosis, medication, or FG ≥126 mg/dL) using logistic regression models adjusted for demographics, cardiometabolic risk factors, and baseline glucose with Bonferroni correction (P < 10-5). We explored biological pathways enriched among the top proteins and calculated improvements in prediction (ΔAUC and net reclassification using 3-year risk thresholds of 6% and 15% in 80% training and 20% internal validation subsamples). We validated results in the Multi-Ethnic Study of Atherosclerosis (MESA) cohort.

Results: There were 3,786 ARIC participants with IFG (mean [SD] age 57 [6] years, 52% female, …

Engagement Of Understudied Populations As Community Change: The South Texas Adrc Model, Gladys E. Maestre, Neela K. Patel, Rosa V. Pirela, Robin C. Hilsabeck, Kendra Stine, Neyra García, Roberto Reyes, Omar Oropeza, Cristian Maestre, Jesus D. Melgarejo, Sarah Williams-Blangero, Ney Alliey Rodriguez

School of Medicine Publications

Many populations experiencing the highest burdens of Alzheimer's disease and related dementias remain understudied, in part because traditional recruitment and retention models are insufficient to support sustained engagement. The Outreach, Recruitment, and Engagement Core (OREC) of the South Texas Alzheimer's Disease Research Center reconceptualized participant recruitment as a long-term system change in a Hispanic-majority, urban–rural region. OREC institutionalizes shared power through community advisory governance, aligns research protocols with local lived realities (through patient navigators, community health workers/promotores, and decentralized access points), and employs a data-driven feedback loop for continuous improvement. In 1 year, 46 outreach events touched 10,134 individuals (71% …

Dean's Research Newsletter, August 2026, Neil W. Schluger

SOM Dean's Research Newsletter

No abstract provided.

Characterization Of Catechol-Type Siderophore(S) From P. Mosselii Cfml 90-83, Kemper R. Rasnake

Electronic Theses and Dissertations

Iron is essential for many biological processes, where it is used as a cofactor. Even though it is abundant in the Earth’s crust, it is in an insoluble form unavailable to microorganisms in the soil. To overcome this, bacteria produce siderophores, which are secondary metabolites that have a high affinity for iron. This allows bacterial cells to obtain insoluble iron that is essential for survival. Pseudomonas mosselii, a Gram negative bacterium, was isolated from soil. It was selected for further analysis as it was found to produce siderophore(s) under iron-limited conditions, which have not been characterized previously. Therefore, we aimed …

Hyperadhesive Von Willebrand Factor Contributes To Pathogenesis Of Preeclampsia, Yajuan Wang, Chenyu Wang, Katie L Houck, Xiaoli Gao, Yuanyuan Chen, Xin Xu, Xue Zhao, Miguel A Cruz, Shu Zhang, Chester Q Li, Fengxia Xue, Min Li, Swati Shree, Jing-Fei Dong, Cha Han

Children’s Nutrition Research Center Staff Publications

Background: Preeclampsia is the most common complication of pregnancy, significantly affecting maternal and fetal health, and is characterized by placental and systemic endotheliopathy. Patients with preeclampsia have elevated levels of VWF (von Willebrand Factor), which is associated with poor clinical outcomes. However, whether VWF serves as a marker for endotheliopathy or contributes to the pathogenesis of preeclampsia remains poorly understood.

Methods: We investigated the role of hyperadhesive VWF in the development of preeclampsia by studying patients, evaluating mouse models, and performing in vitro experiments.

Results: We show that patients develop VWF- and fibrin-rich thrombosis in the placenta and have significantly …

Concerns With The Statistical Analysis In “Effect Of Combined Glp-1 Analogue And Bupropion/Naltrexone On Weight Loss: A Retrospective Cohort Study”, Thirupathi Reddy Mokalla, Henry T Robertson, Sherri Pals, David B Allison

Children’s Nutrition Research Center Staff Publications

No abstract provided.

All-Cause And Cause-Specific Mortality In Gambling Disorder: Evidence From A Nation-Wide Matched And Sibling Cohort Study In Taiwan, Yang-Chieh Brian Chen, Chih-Wei Hsu, Liang-Jen Wang, Mu-Hong Chen, Yao-Hsu Yang, Chih-Sung Liang, Edward Chia-Cheng Lai

Children’s Nutrition Research Center Staff Publications

Background and aims: Gambling disorder (GD) has been linked to suicidal ideation and suicide deaths; however, evidence on all-cause and cause-specific mortality-particularly in Asian populations-remains limited. Using a retrospective cohort study based on nationwide matched and sibling cohort, we investigated all-cause and cause-specific mortality risk in patients with GD.

Design, setting and participants: A retrospective cohort study was conducted using 2000-2022 data from Taiwan's National Health Insurance Research Database. A cohort of 961 individuals diagnosed with GD was identified. An age- and sex-matched control cohort (n = 3,844) and an unaffected sibling cohort (n = 675) were constructed. Cumulative survival …

Sarcopenic Obesity And Dementia Risk: Primary Associations And Landmark Analyses Of Muscle Strength And Body Composition Trajectories, Zhongyang Guan, Blossom C.M. Stephan, Lorenzo M. Donini, Justyna Godos, Giuseppe Grosso, Leticia Radin Pereira, Carla M. Prado, Carlos J. Toro-Huamanchumo, Jonathan C.K. Wells, Marc Sim, Mario Siervo

Research outputs 2022 to 2026

Background and aims: Sarcopenic obesity (SO) has been proposed as a risk factor for cognitive impairment. Yet evidence is inconsistent and often limited by heterogeneous definitions and lack of longitudinal assessments. This study aimed to examine associations of SO with all-cause and subtype-specific dementia, and to assess dose–response patterns and how longitudinal changes in body composition and muscle strength relate to dementia risk. Methods: We included 489,972 adults (mean age 56.5 ± 8.1 years) followed for a median of 13.6 years. SO was defined using the Sarcopenic Obesity Global Leadership Initiative (SOGLI) criteria. Cox models estimated hazard ratios (HRs) for …

Genetic Associations With Pulmonary Embolism Among Those With A Deep Vein Thrombosis: The International Network Against Venous Thrombosis Consortium, Susana Lozano-Esparza, Gabrielle E Shakt, Jennifer A Brody, Angel Martinez-Perez, Matthew P Conomos, Marine Germain, Katharine R Clapham, Maris Teder-Laving, Astrid Van Hylckama Vlieg, Anni Kauko, Florian Thibord, Ohanna C L Bezerra, Girish N Nadkarni, Gaëlle Munsch, Therese Haugdahl Nøst, Ellen L Goode, Yuekai Ji, Daniel I Chasman, Alexander P Reiner, Constance Turman, Kerri L Wiggins, Colleen M Sitlani, Juan Carlos Souto, Pamela L Lutsey, Tiffany Bellomo, Estonian Biobank, Million Veteran Program, Ruifang Li-Gao, Aleksi Kristian Winstén, Ming-Huei Chen, Ron Do, Lénaick Gourhant, Kristian Hveem, Sebastian M Armasu, Noémie Saut, Nathan Pankratz, Franco Giulianini, Jeffrey Haessler, Mingyang Song, Robert Olaso, Eric Boerwinkle, Daniel Dochtermann, Jose Manuel Soria, Stephen S Rich, David Smadja, Satoshi Koyama, Frits R Rosendaal, Teemu Niiranen, France Gagnon, Ha My T Vy, Neil Zakai, Catherine Lemarie, Anne Heidi Skogholt, Jean-François Deleuze, James S Pankow, Paul M Ridker, Yuxi Liu, Kenneth M Rice, Saiju Pyarajan, Mary Cushman, Jospeh Emmerich, Bruce M Psaty, Pradeep Natarajan, Andrew D Johnson, Marc A Rodger, Pierre Suchon, Francis Couturaud, Pierre-Emmanuel Morange, Weihong Tang, Charles Kooperberg, Christopher Kabrhel, Maria Sabater-Lleal, David-Alexandre Trégouët, Alisa S Wolberg, Scott M Damrauer, Nicholas L Smith

Children’s Nutrition Research Center Staff Publications

Background: Venous thromboembolism (VTE) includes deep vein thrombosis (DVT) and pulmonary embolism (PE), the latter of which often originates from DVT and can be fatal.

Objectives: The aim of this study was to identify causal genetic factors that alter risk of PE among those with a presumed DVT.

Methods: Using a case-only design of VTE, we conducted meta-analyses of genome-wide association studies (GWASs) in the International Network Against Venous Thrombosis Consortium. Among participants diagnosed with VTE, each study identified those who had a clinically reported PE, with or without a clinically reported DVT; those remaining had isolated DVT. Logistic regression …

Kras-Independent Factors Drive Pi3k Signaling And Circumvent The Necessity Of Kras-Driven Pi3k Activation In Pdac, Lucas Christopher Bialousow

MUSC Theses and Dissertations

Pancreatic ductal adenocarcinoma (PDAC) has one of the lowest five-year survival rates among cancers and is characterized by near-ubiquitous occurrence of oncogenic KRAS mutations. Oncogenic KRAS activates several downstream pathways, including ERK 1/2 MAPK and PI3K, which are critical for PDAC. However, accumulating evidence suggests that PI3K activity can be maintained independent of oncogenic KRAS. The high prevalence of KRAS^G12R in PDAC challenges the prevailing model of KRAS-driven PI3K activation, as this mutant is defective in direct engagement with PI3Kα. These observations raise important questions regarding how PI3K signaling is sustained in PDAC. Here, we investigated KRAS-independent mechanisms that …

Using Polygenic Risk Scores To Evaluate Definitions Of Self-Reported Sleep Phenotypes Across Cohorts, Annah B Wyss, Michael Brown, Xiang Li, Brian W Spitzer, Zhijie Huang, Heming Wang, Richa Saxena, Linda Gallo, Qibin Qi, Wassim Tarraf, Robert Kaplan, Melissa Lamar, Hector M González, Charles Decarli, Myriam Fornage, Jerome I Rotter, Stephen S Rich, Kent D Taylor, Xiuqing Guo, Alexis C Wood, Peter Y Liu, Susan R Heckbert, Chloé Sarnowski, Jan Bressler, Alanna C Morrison, Bing Yu, Pamela L Lutsey, Carmen R Isasi, Susan Redline, Tamar Sofer

Faculty, Staff and Students Publications

Study objectives: Since genome-wide association studies (GWAS) of sleep phenotypes have been conducted in differing populations and definitions of sleep phenotypes vary across studies, we investigated associations between several polygenic risk scores (PRSs) and potential sleep definitions among multiethnic cohorts.

Methods: Using data from four cohorts (HCHS/SOL, ARIC, MESA, BHS, N = 16 895), we considered multiple definitions of short and long sleep, insomnia, and excessive daytime sleepiness (EDS). PRSs were developed based on summary statistics from GWAS in European ancestry individuals from the UK Biobank (UKB) and from GWAS conducted in a multiethnic population from the Million Veteran Program …

Grated Green Apple And Its Therapeutic Role In Gastrointestinal Disorders: An Analytical Study Of The Effect Of Pectin In Alleviating Diarrhea, Hamza A Saadallah, Mohammed. Ahb. Al-Krdoshi, Noor M Sultan, Farah Y Gaddawi, Marwa R. S Al Shaaban, Abd Al-Bar Al-Farha, Safa M Salim

BioMed Visions Journal

Gastrointestinal disorders, including diarrhea, represent a significant global health burden, necessitating the exploration of effective and accessible therapeutic strategies. Dietary interventions, particularly those containing soluble fibers such as pectin, have emerged as promising solutions due to their profound impact on gut health and its microbiota. This meta-analysis systematically reviews the current scientific understanding of the multifaceted role of pectin in alleviating diarrhea, with a particular focus on the unique contribution of grated green apple. The analysis delves into pectin's physicochemical properties and mechanisms of action—including water binding, modulation of the gut microbiota, production of short-chain fatty acids, and support of …

Evaluation Of Antifungal Properties Of Shiitake And The Effects Of Its Extracts On Some Pathogenic Fungi, Asal Faiz Hameed Aldabbgh, Abdalkarim S. Hasan Alnuaimi, Inaam Jasim Mohamad

BioMed Visions Journal

The present study aims to investigate the inhibitory effect of shiitake mushrooms on some common fungi found in the soil of Mosul City. The fungal extract from Shiitake was prepared using ethanol or water. Different concentrations of the extract were prepared to analyze the antifungal properties of the mushroom by first making a stock solution and then adding specific amounts to the plates containing (Potato Dextrose Agar) PDA medium to achieve the desired concentrations. The active components found in Shiitake were pinpointed through the use of HPLC. The findings revealed how the aqueous extract of Shiitake affected Trichoderma sp. Penicillium …

Food As Medicine: Effects Of A Culinary Medicine Food-Demonstration On Medical Students' Nutrition Knowledge, Confidence, And Satisfaction: An Exploratory Pilot Non-Randomized Pre-Post Intervention Study., Niayesh Mardmomen, Cyrus Fatemi, Olivia K Smith, Michael B. Roberts, Farzaneh Daghigh

PCOM Scholarly Works

Background: Diet plays a central role in the development of chronic diseases, making nutrition-focused interventions a powerful tool for improving population health. However, substantial gaps in nutrition education persist in the U.S. medical education, and medical students frequently report receiving limited nutrition training despite its importance in patient care. Methods: A non-randomized pre-post intervention study with a one-month follow-up was conducted among osteopathic medical students. Participants attended a culinary medicine food-demonstration featuring five case-based topics and three chef-prepared recipes. Nutrition knowledge, satisfaction with nutrition education, confidence in nutrition counseling, and personal nutrition-related behaviors were assessed at baseline, immediately …

The Outcome Of Thrombectomy Can Be Improved By Shortening The Door-To-Needle And The Onset-To-Door Time, Sounira Mehri, Josef Finsterer

Saudi Medical Journal

No abstract provided.

Awareness Of The Mediterranean Diet And Its Perceived Effect On Cardiovascular Health In The Western Region, Saudi Arabia, Abdullah M. Alharbi, Mohammed S. Alsaedi, Mutaz S. Alharbi, Faisal F. Almutairi, Adeeb M. Aloufi, Azzam M. Alharbi, Rakan D. Alsaedi, Hatim F. Alhejaili, Motasem M. Alyamani

Saudi Medical Journal

Objective: To increase awareness of mediterranean diet (MD) and its perceived effects on cardiovascular health, enhance knowledge and inform public health efforts aimed at improving the population's health outcomes of. The MD comprises heart-healthy eating patterns high in vegetables, legumes, nuts and seeds, and fruits. Methods: This cross-sectional study involved adult participants who were living in the Western region of the Kingdom of Saudi Arabia. The data were collected online through social media platforms, then cleaned, coded, and analyzed using Statistical Package for the Social Sciences, version 21 to generate key insights. Results: A total of 390 participants were included …

Dietary Fat Intake And Its Influence On The Association Between Liver Fat And Brain Choline Metabolism In Young Saudi Women, Halima S. Hawesa, Mansour E. Shanawani, Haya A. Alshegri, Mahasin G. Hassan, Amal I. Alorainy, Nouf A. Alroqaiba, Shanoo G. A. Sheikh

Saudi Medical Journal

Objective: Fat-rich nutrition may influence the neurochemical consequences of hepatic lipid accumulation. This study examined whether percent energy from fat modifies the association between liver fat and the brain (Cho/Cr) ratio in healthy young women. Methods: A total of 109 healthy Saudi women aged 18–25 years underwent brain magnetic resonance spectroscopy (¹H-MRS) to quantify Cho/Cr ratios. Liver fat was estimated using MRI-based proton density fat fraction (PDFF), and lipid intake was assessed using a validated food frequency questionnaire. Multivariable regression models tested the interaction between liver fat and fat-derived energy intake, followed by simple slopes analysis, regression …

Emerging Strategies For Cardio-Renal Protection Beyond Raas Blockade: Emphasis On Non-Diabetic Ckd And Resistant Hypertension, Fahad S. Alrashidi

Saudi Medical Journal

Non-diabetic chronic kidney disease (ND-CKD) complicated by resistant hypertension remains a high-risk phenotype even when renin–angiotensin system blockade is optimized. This review synthesizes contemporary evidence for cardio-renal protection beyond traditional renin-angiotensin-aldosterone system inhibition (RAASi), with emphasis on mechanisms, clinical trial data, and pragmatic sequencing. Sodium–glucose cotransporter 2 inhibitors provide hemodynamic and tubular benefits that translate into renal and heart failure risk reduction in many patients with ND-CKD. Non-steroidal mineralocorticoid receptor antagonism (MRA) like finerenone targets inflammatory and fibrotic signaling and may add incremental benefit when potassium is proactively managed. The GLP-1 receptor agonists offer cardiometabolic advantages with emerging kidney signals, …

Esophageal Stricture Post Congenital Tracheoesophageal Fistula Repair, Zaid A. Zaid, Momtaz Al-Nima

Iraqi Postgraduate Medical Journal

Background: It’s a narrowing of > 50% of the esophagus lumen or as a narrowing detected on a contrast study , or at esophagostomy in combination with symptomsTracheoesophageal fistula (TEF) is a relatively rare congenital anomaly occurring in one in 2500-3000 live births (3)Moreover, the life expectancy of the patients without proper treatment may be measured in weeksAim of study: evaluation of the demographics, surgical details, and postoperative outcomes of pediatric patients undergoing surgery for Tracheoesophageal Fistula (TEF) repair.Methods: The study was conducted at Pediatric Teaching Hospital/Medical City from December, 2022, to November , 2023. A total of 35 cases post …

Evaluation Of Peripheral Nerves In Patients With Acromegaly By Electrodiagnostic Study, Taiseer Saad Musa, Farqad Bader Hamdan, Abbas Mahdi Rahmah

Iraqi Postgraduate Medical Journal

Background: Acromegaly is a rare multisystem disorder caused by excess growth hormone (GH) and insulin-like growth factor 1 (IGF-1), typically from a pituitary somatotroph adenoma. Neurological complications, particularly peripheral neuropathies, are common but under-investigated.Objectives: To evaluate peripheral nerve involvement in Iraqi patients with acromegaly and assess the impact of IGF-1 levels, disease duration, adenoma size, and other clinical variables on nerve function.Methods: A cross-sectional study included 41 acromegalic patients (≥25 years) who underwent detailed neurophysiological testing. Patients were classified as metabolically controlled or uncontrolled based on IGF-1 levels.Results: IGF-1 and GH levels were significantly lower in the controlled group (p<0.001), while other clinical variables showed no significant differences. Neurophysiological findings revealed significantly reduced sensory and motor amplitudes, prolonged latencies, and slower conduction velocities in the uncontrolled group. IGF-1 levels correlated positively with sensory and motor latencies and negatively with conduction velocities and CMAP amplitudes. Larger adenoma size and presence of diabetes were also associated with worse nerve parameters. Deep X-ray therapy and surgical excision showed beneficial associations with median nerve conduction velocity.Conclusion: Peripheral nerve dysfunction, including carpal tunnel syndrome and polyneuropathy, is more severe in metabolically uncontrolled acromegaly. Macroadenomas and poor biochemical control are linked with worse neurophysiological outcomes.

Nuclear-Specific Reductive Carboxylation Of Alpha-Ketoglutarate Fuels Histone Acetylation To Induce Chromatin Accessibility And Gene Activation, Abhisha Sawant Dessai, Nadya A Elhalawany, Tao Dai, Justine J Jacobi, Christian Prechtl, Alphonse N Dimeck, Sierra R Morton, Mark D Long, Prashant K Singh, Nagireddy Putluri, Mariana Lopes, Song Liu, Dominic J Smiraglia, Katerina V Gurova, Peder J Lund, Leah A Gates, Sung Yun Jung, Subhamoy Dasgupta

Faculty, Staff and Students Publications

Mitochondria remain at the core of cell metabolism, whereas the nucleus integrates cellular and environmental signals to activate genes. However, the mechanisms that directly link cellular metabolism to gene regulation are not well understood. Here we show, a metabolic pathway in the nucleus controls acetylation of histones by nuclear localization of mitochondrial enzymes aconitase (ACO2) and isocitrate dehydrogenase (IDH2). Metabolic tracing studies show that IDH2 and ACO2 catalyze reductive carboxylation of α-ketoglutarate to rapidly synthesize citrate to increase nuclear acetyl-CoA pool. Genetic and proteomic analyses reveal nuclear IDH2 and ACO2 form a complex with KAT2A/GCN5 for acetylation of histones to …

Adlm Guidance Document On Incorporating Gender Diversity In Pathology And Laboratory Medicine, Tiffany A Thomas, Gabrielle N Winston-Mcpherson, Ina Amarillo, Alisha D Berry, Caroline J Davidge-Pitts, Sridevi Devaraj, Zil Goldstein, Brad S Karon, Brooke M Katzman, Mahmoud A Khalifa, Hung S Luu, James H Nichols, Tracy L Stockley, Michelle R Stoffel, Dina N Greene, Matthew D Krasowski

Faculty, Staff and Students Publications

Background: The first international clinical standards of care for the gender-diverse population were formulated in the late 1970s. In the last 15 years, multiple subspecialty societies within the United States have developed clinical care guidelines for those with gender dysphoria, including gender-affirming hormone therapy (GAHT) and surgical treatments. To date, there are no pathology- and laboratory medicine-specific recommendations in the United States for the gender-diverse population.

Content: This document outlines pathology- and laboratory medicine-specific recommendations for providing optimal care to the gender-diverse population, with a predominant focus on the adult population. The scope of this document focuses on the following …

Reclassifying Pediatric Nafld Using The Steatotic Liver Disease Framework: A Multicenter Retrospective Study From The Nash Crn, Tin Bo Nicholas Lam, Katherine P Yates, Sheila L Noon, Kimberly P Newton, Mark H Fishbein, Jean P Molleston, Stavra A Xanthakos, Ajay K Jain, Miriam B Vos, Niviann M Blondet, Krupa R Mysore, Cynthia A Behling, Laura A Wilson, Jeffrey B Schwimmer

Faculty, Staff and Students Publications

Background and aims: The terminology for hepatic steatosis and NAFLD was revised under the umbrella of steatotic liver disease, with metabolic dysfunction-associated steatotic liver disease (MASLD) as the primary subtype. MASLD is defined by hepatic steatosis plus at least 1 cardiometabolic risk factor. A new category, Met-ALD, describes MASLD with alcohol consumption below the defined thresholds for alcohol-associated liver disease (ALD). While adult studies have demonstrated strong concordance between NAFLD and MASLD, the applicability of this framework in children remains unclear.

Approach and results: We assessed children clinically diagnosed with NAFLD and enrolled in the NASH CRN who had available …

Longitudinal And Cross-Sectional Evidence That Daily Resting And Activity Energy Expenditures Are Independent In Humans, Andrew K Yegian, Elizabeth Pachus, Leanne M Redman, Steven B Heymsfield, K Falkenhain, Alexandra R Harris, Shaji K Chacko, William W Wong, Daniel E Lieberman

Faculty, Staff and Students Publications

Total energy expenditure (TEE) is commonly modelled as the sum of resting energy expenditure (REE), activity energy expenditure (AEE), and diet-induced thermogenesis (DIT). This additive model has recently been challenged by the constrained energy balance model, which proposes that reductions in mass-adjusted REE compensate to some extent for increases in AEE, rendering mass-adjusted TEE effectively invariant. We tested these competing models using two complementary approaches. First, we conducted a short-term longitudinal, repeated-measures experiment in 12 adults who completed 10-day periods of high and low physical activity separated by a washout period. TEE was measured with doubly labelled water, AEE with …

Comprehensive Assessment Of Direct And Passive Smoking Across The Pancreatitis Spectrum, Samuel Han, Dhiraj Yadav, Jun Xu, Melena D Bellin, William E Fisher, Evan L Fogel, Chris Forsmark, Phil A Hart, Liang Li, Stephen J Pandol, Walter G Park, Guru Trikudanathan, Stephen K Van Den Eeden, Santhi Swaroop Vege, Darwin L Conwell, Christie Y Jeon, Consortium For The Study Of Chronic Pancreatitis, Diabetes, And Pancreatic Cancer (Cpdpc)

Faculty, Staff and Students Publications

Objectives: Smoking is a key risk factor for pancreatitis, contributing to pathogenesis and disease progression. Data regarding second-hand smoking, or passive smoking (PS) exposure, are lacking. We therefore aimed to assess the impact of PS exposure across the pancreatitis spectrum.

Methods: We analyzed baseline data from the PROCEED study, a multicenter study in the United States including patients with acute (AP), recurrent acute (RAP), and chronic (CP) pancreatitis. Participants detailed their individual smoking history and PS exposure, which was compared between AP, RAP, and CP subgroups. Participant factors and clinical characteristics were compared by level of individual and PS exposure. …

The Effects Of Anti-Parkinsonian Medications On Bone Mineral Density: A Systematic Review, Mícheál Ó Breasail, Motaz B. El-Leissy, Karan P. Singh, Matthew Smith, Jakub Mesinovic, Marc Sim, Andrew Evans, David Blacker, Saman Heshmat, Neil Mahant, Christian Girgis, Peter R. Ebeling, Ayse Zengin

Research outputs 2022 to 2026

IntroductionParkinson's disease (PD) is associated with elevated fracture risk, particularly at the hip. Antiparkinsonian medications have also been associated with increased fracture risk; although their direct effects on bone mineral density (BMD) remains unclear.ObjectiveInvestigate whether antiparkinsonian medications influence BMD.MethodsA systematic search of four databases (Embase, MEDLINE, APA PsycINFO, Web of Science) was conducted up to 24/11/2025 using terms related to PD, antiparkinsonian medications and bone.ResultsA total of 748 records were identified, with 543 screened following deduplication. Fourteen studies underwent full-text review, of which seven met inclusion criteria. Three studies assessed bone mineral content or surrogate measures at non-standard sites (hand …