Gastroenterology Commons^™

2′-Fucosyllactose Inhibits Human Norovirus Replication In Human Intestinal Enteroids, Ketki Patil, B Vijayalakshmi Ayyar, Nicole M Hayes, Frederick H Neill, Lars Bode, Mary K Estes, Robert L Atmar, Sasirekha Ramani

Faculty, Staff and Students Publications

Human noroviruses (HuNoVs) are the leading cause of acute gastroenteritis worldwide. Currently, there are no targeted antivirals for the treatment of HuNoV infection. Histo-blood group antigens (HBGAs) on the intestinal epithelium are cellular attachment factors for HuNoVs; molecules that block the binding of HuNoVs to HBGAs thus have the potential to be developed as antivirals. Human milk oligosaccharides (HMOs) are glycans in human milk with structures analogous to HBGAs. HMOs have been shown to act as decoy receptors to prevent the attachment of multiple enteric pathogens to host cells. Previous X-ray crystallography studies have demonstrated the binding of HMO 2′-fucosyllactose …

Loss Of Mucin 2 And Mhc Ii Molecules Causes Rare Resistance To Murine Rv Infection, Carolyn Bomidi, Faith M Sawyer, Noah Shroyer, Margaret Conner, Mary K Estes, Sarah E Blutt

Faculty, Staff and Students Publications

Enteric pathogen rotavirus (RV) primarily infects mature enterocytes at the tips of the intestinal villi; however, the role of secretory Paneth and goblet cells in RV pathogenesis remains unappreciated. Atoh1 knockout mice (Atoh1cKO) were used to conditionally delete Paneth, goblet, and enteroendocrine cells in the epithelium to investigate the role of secretory cells in RV infection. Unexpectedly, the number of infected enterocytes and the amount of RV shedding in the stool were greatly decreased following secretory cell deletion. Resistance to RV infection persisted for 7 days after virus inoculation, and Atoh1 knockout mice co-housed with infected wild-type mice were uninfected, …

Navigating Epstein-Barr Virus (Ebv) And Post-Transplant Lymphoproliferative Disorder (Ptld) In Pediatric Liver Transplantation: Current Knowledge And Strategies For Treatment And Surveillance, Erin Y Chen, Natasha Dilwali, Krupa R Mysore, Sara Hassan, Sara Kathryn Smith, Wikrom Karnsakul

Faculty, Staff and Students Publications

Epstein-Barr virus (EBV) is strongly associated with the development of post-transplant lymphoproliferative disorder (PTLD) in pediatric liver transplant recipients. PTLD is one of the most common malignancies following liver transplantation and is associated with significant morbidity and mortality. Factors such as EBV-serostatus mismatch and prolonged or high levels of immunosuppression impact a patient's risk of developing PTLD. While pre-transplant EBV serological screening and post-transplant monitoring of EBV-DNA levels are strongly recommended, universal guidelines for its prevention and management are lacking. Due to a lack of robust prospective studies, current clinical practices vary widely. The treatment of PTLD typically involves reducing …

Transcranial Magnetic Stimulation As A Treatment Modality For Functional Bowel Disorder And Irritable Bowel Syndrome And Possible Correlations With The Gut-Brain Axis: A Review, Lauren Draper, Devin Pfister, Ethan Zaugg

Annual Research Symposium

Functional Bowel Disorders (FBD), including Irritable Bowel Syndrome (IBS), are highly prevalent gastrointestinal conditions classified as Disorders of Gut-Brain Interactions (DGBIs) under the Rome IV criteria. These conditions, marked by abdominal pain, altered bowel habits, and significant psychological comorbidities, present substantial challenges in both diagnosis and treatment. Conventional therapies primarily target gut-centric mechanisms but often yield limited efficacy, underscoring the need for approaches that account for the complex interplay of the gut-brain axis in DGBI pathophysiology.

A Deep Learning-Based System For Automatic Detection Of Emesis With High Accuracy In Suncus Murinus, Zengbing Lu, Yimeng Qiao, Xiaofei Huang, Dexuan Cui, Julia Y H Liu, Man Piu Ngan, Luping Liu, Zhixin Huang, Zi-Tong Li, Lingqing Yang, Aleena Khalid, Yingyi Deng, Sze Wa Chan, Longlong Tu, John A Rudd

Children’s Nutrition Research Center Staff Publications

Quantifying emesis in Suncus murinus (S. murinus) has traditionally relied on direct observation or reviewing recorded behaviour, which are laborious, time-consuming processes that are susceptible to operator error. With rapid advancements in deep learning, automated animal behaviour quantification tools with high accuracy have emerged. In this study, we pioneere the use of both three-dimensional convolutional neural networks and self-attention mechanisms to develop the Automatic Emesis Detection (AED) tool for the quantification of emesis in S. murinus, achieving an overall accuracy of 98.92%. Specifically, we use motion-induced emesis videos as training datasets, with validation results demonstrating an accuracy of 99.42% for …

Dairy Consumption And The Colonic Mucosa-Associated Gut Microbiota In Humans-A Preliminary Investigation, Ellie Chen, Nadim J Ajami, Donna L White, Yanhong Liu, Shawn Gurwara, Kristi Hoffman, David Y Graham, Hashem B El-Serag, Joseph F Petrosino, Li Jiao

Faculty, Staff and Students Publications

Background: Dairy consumption has been associated with various health outcomes that may be mediated by changes in gut microbiota.

Methods: This cross-sectional study investigated the association between the colonic mucosa-associated gut microbiota and the self-reported intake of total dairy, milk, cheese, and yogurt. A total of 97 colonic mucosal biopsies collected from 34 polyp-free individuals were analyzed. Dairy consumption in the past year was assessed using a food frequency questionnaire. The 16S rRNA gene V4 region was amplified and sequenced. Operational taxonomic unit (OTU) classification was performed using the UPARSE and SILVA databases. OTU diversity and relative abundance were compared …

Hes V20 Outperforms Galad For Detection Of Hcc: A Phase 3 Biomarker Study In The United States, Hashem B El-Serag, Qingchun Jin, Nabihah Tayob, Emad Salem, Michelle Luster, Abeer Alsarraj, Saira Khaderi, Amit G Singal, Jorge A Marrero, Sumeet K Asrani, Fasiha Kanwal

Faculty, Staff and Students Publications

BACKGROUND AND AIMS: The original hepatocellular carcinoma early detection screening (HES) score, which combines alpha-fetoprotein (AFP) with age, alanine aminotransferase, and platelets, has better performance than AFP alone for early HCC detection. We have developed HES V2.0 by adding AFP-L3 and des-gamma-carboxy prothrombin to the score and compared its performance to GALAD and ASAP scores among patients with cirrhosis.

APPROACH AND RESULTS: We conducted a prospective-specimen collection, retrospective-blinded-evaluation phase 3 biomarker cohort study in patients with cirrhosis enrolled in imaging and AFP surveillance. True-positive rate (TPR)/sensitivity and false-positive rate for any or early HCC were calculated for GALAD, ASAP, and …

American Society For Gastrointestinal Endoscopy Guideline On The Diagnosis And Management Of Gerd: Methodology And Review Of Evidence, Asge Standards Of Practice Committee, Madhav Desai, Wenly Ruan, Nirav C Thosani, Manuel Amaris, J Stephen Scott, Ahmed Saeed, Barham Abu Dayyeh, Marcia Irene Canto, Wasif Abidi, Omeed Alipour, Stuart K Amateau, Natalie Cosgrove, Sherif E Elhanafi, Nauzer Forbes, Divyanshoo R Kohli, Richard S Kwon, Larissa L Fujii-Lau, Jorge D Machicado, Neil B Marya, Saowanee Ngamruengphong, Swati Pawa, Sunil G Sheth, Nikhil R Thiruvengadam, Bashar J Qumseya

Faculty, Staff and Student Publications

This clinical practice guideline from the American Society for Gastrointestinal Endoscopy (ASGE) provides an evidence-based approach for strategies to diagnose and manage GERD. This document was developed using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) framework and serves as an update to the prior ASGE guideline on the role of endoscopy in the management of GERD (2014). The updated guideline addresses the indications for endoscopy in patients with GERD, including patients who have undergone sleeve gastrectomy (SG) and peroral endoscopic myotomy (POEM). It also discusses endoscopic evaluation of gastroesophageal junctional integrity comprehensively and uniformly. Important, this guideline discusses …

Dysregulated Klf4 Expression Plays A Pivotal Role In The Pathogenesis Of Pancreatic Intraductal Papillary Mucinous Neoplasms, Xiangsheng Zuo, Liang Wang, Yi Liu, Huamin Wang, Margarete Hafley, Mihai Gagea, Ru Chen, Yun Xiong, Sheng Pan, Imad Shureiqi, Robert S Bresalier, Daoyan Wei

Faculty, Staff and Student Publications

No abstract provided.

Light-Dark Shift Promotes Colon Carcinogenesis Through Accelerated Colon Aging, Deepak Sharma, Phillip A Engen, Abu Osman, Darbaz Adnan, Maliha Shaikh, Mostafa K Abdel-Reheem, Ankur Naqib, Stefan J Green, Bruce Hamaker, Christopher B Forsyth, Lin Cheng, Ali Keshavarzian, Khashayarsha Khazaie, Faraz Bishehsari

Faculty, Staff and Student Publications

Colorectal cancer (CRC) is the third most common cancer worldwide, with rising prevalence among younger adults. Several lifestyle factors, particularly disruptions in circadian rhythms by light-dark (LD) shifts, are known to increase CRC risk. Epidemiological studies previously showed LD-shifts are associated with increased risk of CRC. To explore the mechanisms and interactions between LD-shift and intestinal aging, we investigated how the combination of LD-shifts and aging impacts colon carcinogenesis development. Our data showed that LD-shifts and aging increased colon tumorigenesis. Notably, LD-shift accelerated intestinal aging by altering aging-related pathways, such as intestinal barrier damage, accompanied by dysbiotic changes in the …

Dna Methylation Profile In Buffy Coat Identifies Methylation Differences Between Cirrhosis With And Without Hepatocellular Carcinoma, Hyeyeun Lim, Hashem B El-Serag, Michelle Luster, Megan L Grove, Jinyoung Byun, Yuri Jung, Younghun Han, Eric Boerwinkle, Christopher I Amos, Aaron P Thrift

Faculty, Staff and Students Publications

Background/Objectives: Cirrhosis is the precursor to most cases of hepatocellular carcinoma (HCC). Understanding the mechanisms leading to the transition from cirrhosis to HCC and identifying key biomarkers is crucial to developing effective screening strategies and reducing HCC-related mortality. DNA methylation is associated with gene inactivation and plays an important role in physiological and pathological processes; however, its role in cirrhosis progression to HCC is unknown.

Methods: We performed genome-wide DNA methylation profiling using Illumina Infinium MethylationEPI BeadChip in pre-diagnostic samples from 22 cirrhosis patients who subsequently developed HCC and 22 cirrhosis patients who remained HCC-free during an average 4-year follow-up. …

Microrna 133a Regulates Squalene Epoxidase Expression In Colorectal Cancer Cells To Control Cell Proliferation And Cholesterol Production, Ji Su Mo, Santosh Lamichhane, Grinsun Sharma, Soo Cheon Chae

School of Medicine Faculty Publications

Background/Objectives: Colorectal cancer (CRC) is one of the most common cancers worldwide, with high incidence and mortality rates. MicroRNAs are endogenous and non-coding RNAs that play a pivotal role in the development and progression of various cancers by targeting specific genes. Previously, we identified MIR133A to be significantly decreased in human CRC tissues. This study aims to identify the relationship with SQLE, one of the candidate target genes of MIR133A, and study their interaction in CRC cells. Methods: Through the luciferase reporter assay, quantitative RT-PCR (qRT-PCR), and Western blot analysis. Results: We identified SQLE as a direct target gene of …

Nucleus-Translocated Gclm Promotes Chemoresistance In Colorectal Cancer Through A Moonlighting Function, Jin-Fei Lin, Ze-Xian Liu, Dong-Liang Chen, Ren-Ze Huang, Fen Cao, Kai Yu, Ting Li, Hai-Yu Mo, Hui Sheng, Zhi-Bing Liang, Kun Liao, Yi Han, Shan-Shan Li, Zhao-Lei Zeng, Song Gao, Huai-Qiang Ju, Rui-Hua Xu

Faculty, Staff and Student Publications

Metabolic enzymes perform moonlighting functions during tumor progression, including the modulation of chemoresistance. However, the underlying mechanisms of these functions remain elusive. Here, utilizing a metabolic clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 knockout library screen, we observe that the loss of glutamate-cysteine ligase modifier subunit (GCLM), a rate-limiting enzyme in glutathione biosynthesis, noticeably increases the sensitivity of colorectal cancer (CRC) cells to platinum-based chemotherapy. Mechanistically, we unveil a noncanonical mechanism through which nuclear GCLM competitively interacts with NF-kappa-B (NF-κB)-repressing factor (NKRF), to promote NF-κB activity and facilitate chemoresistance. In response to platinum drug treatment, GCLM is phosphorylated by P38 …

Comparing Human Milk-Derived Vs Bovine-Derived Fortifiers In Formula-Fed Preterm Infants On The Incidence Of Necrotizing Enterocolitis, Maya C. Kern

Nursing | Student Research Posters

Necrotizing enterocolitis (NEC) is one of the leading causes of death in infants < 32 weeks gestation and/or < 1500g. Human breast milk lowers NEC rates through immunologic, microbial, and gut-protective mechanisms. When maternal or donor milk is unavailable, infants require formula with fortification but the safest type of fortifiers remains unclear. Bovine-derived fortifiers may increase gut inflammation; human milk-derived fortifiers may offer more protection. Limited research exists comparing these fortifiers when infants are exclusively formula fed. Determining if human milk-derived fortifiers still reduce NEC risk could influence NICU feeding guidelines and improve outcomes.

Clinical Significance Of "S" Isoform Of Dclk1 In Different Gastric Cancer Subtypes Using Newly Produced Monoclonal Antibody, Mahdieh Razmi, Ali-Ahmad Bayat, Nafiseh Mortazavi, Elham Kalantari, Leili Saeednejad Zanjani, Sima Saki, Roya Ghods, Zahra Madjd

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Background

Materials and methods

Enhanced Anticancer Activity Of Novel Pyrimidine Nucleoside Analog In Pancreatic Cancer, Raviteja Bulusu, Joy Okoro, Esther Frimpong, Sunil Krishnan, Saunjoo Yoon, Bo Han, Xue Zhu, Edward Agyare

The Brown Foundation: Institute of Molecular Medicine

This study explores the synthesis, characterization, and therapeutic efficacy of AGY1, AGY2, AGY3, AGY4, and AGY5, which are novel 5-FU analogs designed to improve metabolic stability, prolong half-life, and anti-tumor activity against pancreatic cancer. The 5-FU molecule was chemically modified to bypass dihydropyrimidine dehydrogenase (DPD)-mediated inactivation, enhancing drug retention and increasing lipophilicity for improved cellular uptake. The analog cytotoxic activity was evaluated in 2D monolayer cultures and 3D pancreatic cancer spheroids and organoid models derived from MiaPaCa-2 and PANC-1 cells to simulate a more complex tumor environment. In the 2D model, AGY1, AGY2, AGY3, AGY4, and AGY5 displayed significantly higher …

Bcg-Induced Dna Methylation Changes Improve Coronavirus Disease 2019 Vaccine Immunity Without Decreasing The Risk For Severe Acute Respiratory Syndrome Coronavirus 2 Infection, Santiago Carrero Longlax, Kent J Koster, Ashish M Kamat, Marisa Lozano, Seth P Lerner, Rebecca Hannigan, Tomoki Nishiguchi, Abhimanyu, Daanish Sheikh, Malik Ladki, Alexandra Portillo, Amrit Koirala, Tajhal D Patel, Zoe Spieler, Aaron B Benjamin, Maxim Lebedev, Theresa U Ofili, Robert W Hutchison, George Udeani, Lynne A Opperman, Gabriel Neal, Anna M Mandalakas, Mihai G Netea, Moshe Arditi, Pablo Avalos, Sandra L Grimm, Cristian Coarfa, Jeffrey D Cirillo, Andrew R Dinardo

Faculty, Staff and Students Publications

BACKGROUND: The BCG vaccine induces trained immunity, an epigenetic-mediated increase in innate immune responsiveness. Therefore, this clinical trial evaluated if BCG-induced trained immunity could decrease coronavirus disease 2019 (COVID-19)-related frequency or severity.

METHODS: A double-blind, placebo-controlled clinical trial of healthcare workers randomized participants to vaccination with BCG TICE or placebo (saline). Enrollment included 529 healthcare workers randomized to receive BCG or placebo. Primary analysis evaluated COVID-19 disease frequency, while secondary analysis evaluated coronavirus immunity in a subset of participants. Study enrollment ceased early in December 2020 following introduction of COVID-19-specific vaccines.

RESULTS: Study enrollment was halted early, prior to reaching …

Impact Of American Thyroid Association's Revised Cancer Management Guidelines On Thyroid Cancer Incidence Trends: A Retrospective Cohort Study, 2000-2020, Pierre Fwelo, Natalia I Heredia, Ruosha Li, Ayrton Bangolo, Vignesh K Nagesh, Simcha Weissman, Xianglin L Du

Faculty, Staff and Student Publications

Background: The past four decades have seen a steady increase in thyroid cancer in the United States (US). This study investigated the impact of the American Thyroid Association (ATA)'s revised cancer management guidelines on thyroid cancer incidence trends and how the trends varied by socioeconomic, histologic, geographic, and racial and ethnic characteristics from 2000 to 2020.

Methods: We used data from the Surveillance, Epidemiology, and End Results (SEER) database to identify thyroid cancer cases diagnosed among US patients between 2000 and 2020. We employed joinpoint regression software to fit, assess, and compare thyroid cancer incidence trends over time stratified by …

Ifrd1 Is Required For Maintenance Of Bladder Epithelial Homeostasis, Bisiayo E Fashemi, Amala K Rougeau, Arnold M Salazar, Steven J Bark, Rayvanth Chappidi, Jeffrey W Brown, Charles J Cho, Jason C Mills, Indira U Mysorekar

Faculty, Staff and Students Publications

The maintenance of homeostasis and rapid regeneration of the urothelium following stress are critical for bladder function. Here, we identify a key role for IFRD1 in maintaining urothelial homeostasis in a mouse model. We demonstrate that the murine bladder expresses IFRD1 at homeostasis, particularly in the urothelium, and its loss alters the global transcriptome with significant accumulation of endolysosomes and dysregulated uroplakin expression pattern. We show that IFRD1 interacts with mRNA-translation-regulating factors in human urothelial cells. Loss of Ifrd1 leads to disrupted proteostasis, enhanced endoplasmic reticulum (ER stress) with activation of the PERK arm of the unfolded protein response pathway, …

The Study Of The Epidemiology Of Pediatric Hypertension Registry (Superhero): Rationale And Methods, Andrew M South, Victoria C Giammattei, Kiri W Bagley, Christine Y Bakhoum, William H Beasley, Morgan B Bily, Shupti Biswas, Aaron M Bridges, Rushelle L Byfield, Jessica Fallon Campbell, Rahul Chanchlani, Ashton Chen, Lucy D'Agostino Mcgowan, Stephen M Downs, Gina M Fergeson, Jason H Greenberg, Taylor A Hill-Horowitz, Elizabeth T Jensen, Mahmoud Kallash, Margret Kamel, Stefan G Kiessling, David M Kline, John R Laisure, Gang Liu, Jackson Londeree, Caroline B Lucas, Sai Sudha Mannemuddhu, Kuo-Rei Mao, Jason M Misurac, Margaret O Murphy, James T Nugent, Elizabeth A Onugha, Ashna Pudupakkam, Kathy M Redmond, Sandeep Riar, Christine B Sethna, Sahar Siddiqui, Ashley L Thumann, Stephen R Uss, Carol L Vincent, Irina V Viviano, Michael J Walsh, Blanche D White, Robert P Woroniecki, Michael Wu, Ikuyo Yamaguchi, Emily Yun, Donald J Weaver

Faculty, Staff and Students Publications

Despite increasing prevalence of hypertension in youth and high adult cardiovascular mortality rates, the long-term consequences of youth-onset hypertension remain unknown. This is due to limitations of prior research, such as small sample sizes, reliance on manual record review, and limited analytic methods, that did not address major biases. The Study of the Epidemiology of Pediatric Hypertension (SUPERHERO) is a multisite, retrospective registry of youth evaluated by subspecialists for hypertension disorders. Sites obtain harmonized electronic health record data using standardized biomedical informatics scripts validated with randomized manual record review. Inclusion criteria are index visit for International Classification of Diseases, 10th …

Point Of Care Ultrasound For Gastric Residual: An Objective Structured Clinical Examination, Brandon Quinn, Kaitlyn Gray

Doctoral Projects

Point of care ultrasound (POCUS) has become an invaluable tool in modern medical practice offering real-time diagnostic and procedural guidance for anesthesia providers. POCUS is a non-invasive assessment tool that gives anesthesia insight into a quantitative assessment of gastric residuals. Furthermore, POCUS assessments are useful in preventing anesthetic complications that can cause major morbidity and mortality such as aspiration pneumonia. Despite the growing relevance, formalized training on POCUS for assessing gastric residuals remains limited in many nurse anesthesia programs. The University of Southern Mississippi currently lacks a standardized curriculum for teaching student registered nurse anesthetists how to utilize gastric ultrasound …

Evaluation Of Stress Ulcer Prophylaxis In Pediatric General Medicine Patients After Transfer From The Intensive Care Unit And At Discharge, Lamees Loubani, Jenna W Bartlett, Brent Mothner, Rathi Asaithambi, Surin Lee

Faculty, Staff and Students Publications

OBJECTIVES: The primary aim of this study was to determine continuation rates of stress ulcer prophylaxis (SUP) upon transfer from a pediatric intensive care unit (PICU) to a general medicine unit and upon hospital discharge. The secondary aim was to identify patient characteristics or concomitant medications that were associated with continuation of SUP at transfer from the PICU.

METHODS: This retrospective chart review included patients who were initiated on acid suppression for SUP in the PICU between June 2021 and May 2022 and subsequently transferred to a general medicine unit prior to discharge. Patients were excluded if they were receiving …

Strategies To Enhance Diagnostic Capabilities For The New Drug-Resistant Tuberculosis (Dr-Tb) Drugs, Antonia Morita Iswari Saktiawati, Anca Vasiliu, Francesca Saluzzo, Onno W Akkerman

Faculty, Staff and Students Publications

The global burden of drug-resistant tuberculosis (DR-TB) continues to challenge healthcare systems worldwide. There is a critical need to tackle DR-TB by enhancing diagnostics and drug susceptibility testing (DST) capabilities, particularly for emerging DR-TB drugs. This endeavor is crucial to optimize the efficacy of new therapeutic regimens and prevent the resistance and overuse of these invaluable weapons. Despite this urgency, there remains a lack of comprehensive review of public health measures aimed at improving the diagnostics and DST capabilities. In this review, we outline strategies to enhance the capabilities, especially tailored to address the challenges posed by resistance to new …

A Virtual Scalable Model Of The Hepatic Lobule For Acetaminophen Hepatotoxicity Prediction, Stelian Camara Dit Pinto, Jalal Cherkaoui, Debarshi Ghosh, Valentine Cazaubon, Kenza E Benzeroual, Steven M Levine, Mohammed Cherkaoui, Gagan K Sood, Sharmila Anandasabapathy, Sadhna Dhingra, John M Vierling, Nicolas R Gallo

Faculty, Staff and Students Publications

Addressing drug-induced liver injury is crucial in drug development, often causing Phase III trial failures and market withdrawals. Traditional animal models fail to predict human liver toxicity accurately. Virtual twins of human organs present a promising solution. We introduce the Virtual Hepatic Lobule, a foundational element of the Living Liver, a multi-scale liver virtual twin. This model integrates blood flow dynamics and an acetaminophen-induced injury model to predict hepatocyte injury patterns specific to patients. By incorporating metabolic zonation, our predictions align with clinical zonal hepatotoxicity observations. This methodology advances the development of a human liver virtual twin, aiding in the …

Optimal Management Of Patients With Moderate-To-Severe Inflammatory Bowel Disease, Tugrul Purnak, Atilla Ertan

Faculty, Staff and Student Publications

Inflammatory bowel disease (IBD), encompassing Crohn's disease (CD) and ulcerative colitis (UC), is a chronic and often debilitating condition requiring complex and individualized management. Over the past few decades, advancements in understanding IBD pathophysiology have led to a transformative shift in therapeutic approaches. This article provides a comprehensive overview of the evolution of IBD treatments, from early symptom-focused therapies to modern biologics, small molecule agents, and emerging treatment strategies. We discuss therapeutic goals centered on achieving clinical remission, endoscopic/mucosal healing, and enhancing patient quality of life. Additionally, we explore the rationale for the early and personalized use of biologic therapies …

Limosilactobacillus Reuteri Ameliorates Maternal Separation Stress In Newborn Mice And Alters Subsequent Adult Behaviour, Z. M. Saleh, B. Okeugo, V. R. Venna, F. W. Blixt, V. A. Quaicoe, E. S. Park, S. Giorgberidze, Meng Luo, Christopher M. Taylor, J. M. Rhoads, Y. Liu

School of Medicine Faculty Publications

Maternal separation (MS) in mice results in behavioral deficits and gut microbiota dysbiosis that all persist into adulthood. Limosilactobacillus reuteri DSM 17938 modulates gut microbiota, alters systemic metabolites, and facilitates immune regulation. To assess the effect of DSM 17938 on biochemical and behavioural stress-associated changes, newborn mice were exposed to unpredictable MS (MSU) daily from day 7 to day 20 of life, with intragastric administration of DSM 17938 or PBS as control. Body weight, brain levels of cholecystokinin (CCK), glial fibrillary acidic protein (GFAP), corticosterone, and stool microbiota were assessed at day 21. Behaviour tests including Y-maze (YMT), Tail Suspension …

The Use Of Real-World Evidence To Generate Cost Analysis Of Antibiotic Susceptibility Testing (Ast) In Patients With Elicobacter Pylori Treatment Failure In Thailand: A Large Population-Based Study, Natsuda Aumpan, Pornpen Gamnarai, Arti Wongcha-Um, Muhammad Miftahussurur, Yoshio Yamaoka, Ratha-Korn Vilaichone

Faculty, Staff and Students Publications

BACKGROUND:H. pylori eradication is effective for gastric cancer prevention. Treatment failure is caused by increased antibiotic resistance. This study aimed to determine eradication rates and perform cost analysis between susceptibility-guided therapy and empirical treatment in patients with H. pylori treatment failure.

METHODS: This retrospective cohort study included patients with dyspepsia undergoing gastroscopy at tertiary care center in Thailand from March 2014 to October 2021. Treatment failure was defined as persistent H. pylori infection after ≥1 regimen completion. Early AST was defined as AST performed shortly after first-line treatment failure. Demographic data, AST results, eradication regimens, and medication costs were …

Neighborhood-Level Deprivation Mediates Racial And Ethnic Disparities In Hcc Diagnosis In Texas, Itunu O Sokale, Aaron P Thrift, Hashem B El-Serag, Abiodun O Oluyomi

Faculty, Staff and Students Publications

BACKGROUND: Texas has the highest HCC rates in the United States, and the greatest burden is among Hispanics. Racial and ethnic disparities in HCC incidence have multiple underpinning factors. We conducted a mediation analysis to examine the role of neighborhood disadvantage (Area Deprivation Index) as a potential mediator of the association between neighborhood race and ethnicity distribution and neighborhood HCC case counts in Texas.

METHODS: The primary outcome measure was counts of new HCC diagnoses per census tract based on Texas Department of State Health Services Texas Cancer Registry data. The primary exposure of interest was the race and ethnicity-based …

Lack Of Detection Of Norwalk Virus In Saliva Samples From A Controlled Human Infection Model, Robert L Atmar, Frederick H Neill, Nicole M Hayes, Antone R Opekun, David Y Graham, Mary K Estes, Sasirekha Ramani

Faculty, Staff and Students Publications

Following recent reports of norovirus replication in salivary gland cells, we examined whether the prototype norovirus strain, Norwalk virus (GI.1), could be detected in the saliva of 21 experimentally infected persons. Viral RNA was not detected in saliva 2 and 7 days after challenge despite high levels being present in feces.

Serum Levels Of Total Bile Acids Are Associated With An Increased Risk Of Hcc In Patients With Cirrhosis, Hashem B El-Serag, Aaron P Thrift, Hao Duong, Jing Ning, Saira Khaderi, Amit G Singal, Sumeet K Asrani, Jorge A Marrero, Hannah Powell, Kinza Rizwan, Omar Najjar, Christopher I Amos, Michelle Luster, Abeer Al-Sarraj, Emad Salem, Michael E Scheurer, Jagpreet Chhatwal, Salma Kaochar, Fasiha Kanwal

Faculty, Staff and Students Publications

BACKGROUND: Previous studies have reported higher circulating bile acid levels in patients with HCC compared to healthy controls. However, the association between prediagnostic bile acid levels and HCC risk among patients with cirrhosis is unclear.

METHODS: We measured total BA (TBA) concentration in serum samples collected from a prospective cohort of patients with cirrhosis who were followed until the development of HCC, death, or last study date. Competing risk proportional hazard-adjusted models were used to estimate the association between tertiles of serum TBA levels and the risk of developing HCC. We quantified the incremental predictive value of serum bile acid …