Digestive System Commons^™

Vasculature Of The Anterior Abdominal Wall And Surface Anatomy Of The Liver And Stomach: Considerations For Minimal Access Surgeries In Neonates, Daniël J. Van Tonder, Natalie Keough, Martin Louis Van Niekerk, Albert Van Schoor

COM Scholarship

Background: Minimal access surgeries are growing more common in neonatal care, but the risk of accidental injury to abdominal wall blood vessels remains a concern. This risk is increased by limited precise anatomical data specific to neonates. Therefore, this study aimed to quantitatively map the superficial and deep blood vessels of the neonatal anterior abdominal wall concerning important surgical landmarks to develop evidence-based recommendations for safer laparoscopic port placement. Methods: Thirty formalin-fixed low-birth-weight neonatal body donations (≤4 weeks old) were dissected. An anatomical grid based on palpable landmarks—including the umbilicus, xiphoid process, and anterior superior iliac spines—was utilised to measure …

Dietary Intake Of Micro- And Nanoplastics: Potential Adverse Gi Effects On Microbiome, Inflammation, And Neoplasia, Michael Saadeh, Gordon Hong, Sana Rabeeah, Priyata Dutta, Edward C. Oldfield, Iv, David A. Johnson

Department of Medicine Faculty Publications

Micro- and nanoplastics (MNPs) are pervasive in food-contact environments and the human diet, positioning the gastrointestinal (GI) tract as the primary portal of entry and a plausible site of early biological effects. Human exposure is supported by detection of microplastics in stool and colon tissue, and emerging clinical studies report associations between fecal microplastic burden and GI disease states, including inflammatory bowel disease (IBD) and colorectal cancer (CRC). Preclinical studies provide mechanistic plausibility, reporting that ingested MNPs can modulate microbial ecology, alter mucus membrane integrity, increase intestinal permeability through changes in cellular tight junction biology, and induce inflammatory gene expression. …

Comparison Of Fully Covered Self-Expandable Metal Biliary Stents With Or Without Anchoring Double-Pigtail Plastic Stents: A Systematic Review And Meta-Analysis, Samuel Tanner, Fadi Hawa, Alejandra Vargas, Priyata Dutta, Antonio Facciorusso, Jean M. Chalhoub, Jorge D. Machicado

Department of Medicine Faculty Publications

Background and AIMS

Fully covered self-expandable metal stents (FcSEMSs) have become the mainstay of treatment for a variety of biliary pathologies. However, FcSEMSs have been associated with a greater rate of stent migration than other types of stents. A technique of anchoring double-pigtail plastic stents (DPPSs) has been proposed to minimize migration of biliary FcSEMSs. Herein, we evaluated the efficacy of anchoring DPPSs among patients treated with biliary FcSEMSs.

Methods

We performed a systematic review using PubMed, EMBASE, and Web of Science from database inception through August 2023. Full-text articles comparing FcSEMSs with or without anchoring DPPSs were included. We …

Pilot Study On The Use Of Multimorbidity Index In Patients Receiving Home Parenteral Nutrition, Michael M. Rothkopf, Mohan Pant, Zachary Rothkopf, Rebecca Brown Rdn, Jaime Haselhorst Rdn, Debbie L. Stevenson Rdn, Andrew Depalma Mba, Michael Saracco

Epidemiology, Biostatistics, & Environmental Health Faculty Publications

Background

Home parenteral nutrition (HPN) patients often have multiple comorbidities. A validated multimorbidity index (MMI) could help determine resource needs and risks with HPN. We evaluated MMI scoring to determine if it predicted HPN resource use and outcomes.

Methods

We performed a secondary analysis of 60 HPN patients from a previous study based on Cumulative Illness Rating Scale (CIRS) scoring. We examined three variables: PN formula changes, hospitalizations, and hospital length of stay (LOS). Density plots were produced to select a CIRS score cutoff value. Spearman correlations among the three variables of interest were computed. The data were then subjected …

The Effects Of Probiotics And The Low-Fodmap Diet On Symptoms Of Irritable Bowel Syndrome, Charlotte A. Renfrow, Carsyn Wharton, Jordan Overstreet, Jordyn Munch

Student Scholar Symposium

The Effects of Probiotics and the Low-FODMAP Diet on Symptoms of Irritable Bowel Syndrome

Keywords: gut microbiome, probiotics, low FODMAP, IBS

Probiotic Intervention In Managing Chronic Stress, Bianca Opdenbosch

PANDION: The Osprey Journal of Research and Ideas

Chronic stress can induce gut dysbiosis which contributes to the dysregulation of the gut-brain axis and leads to anxiety and depressive-like symptoms. The gut-brain axis relies on nervous, immune, and endocrine interactions. Gut dysbiosis, an imbalance within the gut microbiome, disrupts gut-brain communication, impairing gut barrier integrity, inflammation regulation, and hormonal and neurotransmitter production. These gut changes contribute to mood disorders resulting from stress, and thus it is important to implement dietary interventions, like probiotics, to help mitigate these effects. Research highlights the potential of probiotics to act as an intervention to combat stress-induced gut dysbiosis and replenish beneficial bacteria …

Computational Insights Into The Structural Basis For Reduced Hepatotoxicity Of Novel Nonopioid Analgesics, Claire Coderch, Hernan A. Bazán, Nicolas G. Bazan, Bhattacharjee Surjyadipta, Julio Alvarez-Builla, Beatriz De Pascual-Teresa

School of Graduate Studies Faculty Publications

Acetaminophen (ApAP) toxicity arises from the reactive intermediate N-acetyl-p-benzoquinone imine (NAPQI), a degradation product known to cause significant liver damage and kidney injury. This toxicity is a major concern associated with the widespread use of ApAP, a commonly used nonsteroidal anti-inflammatory drug. To address this important issue, a series of novel nonopioid analgesic candidates with reduced toxicity have been recently reported. However, the molecular and atomic-level mechanisms underlying their decreased toxicity remain largely unexplored. In this study, computational analyses is performed to investigate the dynamic behavior, physicochemical properties, and ligand-receptor interactions of these new chemical entities (NCEs). The findings provide …

Wernicke’S Encephalopathy With Classic Triad And Normal Mri In A Young Woman Following Rapid-Sequence Bariatric And Biliary Surgery, Hugo Zamarron, Nina Mourao, Roberto A. Cruz Saldana

Research Colloquium

Background: Wernicke’s encephalopathy is a life-threatening neurological disorder caused by thiamine deficiency, most commonly associated with alcoholism. However, postoperative nutritional deficiencies in young patients undergoing bariatric procedures are increasingly recognized. This case is unique due to the rapid succession of bariatric and cholecystectomy surgeries, development of classic Wernicke’s symptoms with a normal MRI, and diagnostic delay due to overlapping differential diagnoses including intracranial hypotension and myelopathy.

Case Presentation: A 22-year-old woman with class III obesity underwent sleeve gastrectomy in July 2022, followed by significant weight loss and persistent intractable vomiting. Due to suspected gallbladder disease, she underwent a cholecystectomy in …

The Predilection Of Specific Diseases To Affect Different Sections Of The Esophagus, Monjur Ahmed

Division of Gastroenterology and Hepatology Faculty Papers

Certain esophageal diseases have a predilection for affecting different parts of the esophagus. This predilection is noted in our clinical practice as we investigate various esophageal diseases using multiple imaging and motility studies, as well as endoscopic procedures with biopsies. Clinical presentations vary with the stage and location of the disease. Clinicians can suspect certain diseases when a particular part of the esophagus is involved and then can perform appropriate investigations. Esophageal diseases with section involvement, with their symptomatology, diagnostic tests, and management, have been discussed in this narrative review. This review aims to revisit those diseases with a current …

Redefining The Albumin-Bilirubin Score: Predictive Modeling And Multidimensional Integration In Liver And Systemic Disease, Berkay Demirors, Ramin Shekouhi, Paola Berrios Jimenez, Anjali Yadav, Guido Chiriboga, Vishal A. Mahesh, Harsheen K. Manaise, Jade Bowers, Angel Aguayo Merly, Emmanuel Gabriel

School of Medicine Faculty Publications

This editorial comment is on the article by Xu et al. It offers an in-depth analysis of liver function assessment tools and their prognostic roles in non-malignant liver diseases, with a focus on the albumin-bilirubin (ALBI) score. ALBI’s components, grading system, and clinical relevance across various liver conditions are reviewed and compared with traditional models such as the Child-Pugh and model for end-stage liver disease scores. We included recent studies evaluating ALBI’s role in estimating liver function, suggesting it may help differentiate patients who appear similar under other staging systems, and assist in guiding clinical decisions. Although ALBI is primarily …

Segmental Atrophy Of The Liver: Review Of A Rare Pseudotumor, Ayesha Younus, Yu Liu, Ellen E. Connor, Zeng-Ying Wu, Hwajeong Lee, Zhi-Yan Fu

School of Medicine Faculty Publications

Segmental atrophy (SA) of the liver is a rare, often underrecognized, benign condition that presents as a mass lesion, mimicking a neoplasm, which poses a significant diagnostic challenge. Given its rarity, only a limited number of case reports and series have been published, resulting in sparse literature on the entity. This review aims to summarize the clinicopathologic and diagnostic features of SA and thus improve its recognition.

Dietary Protein’S Effect On The Gut Microbiome And Its Metabolites: Protocol Description And Virtual Recruitment Efforts For A Remote Randomized Controlled Trial, Karyn M. Gallivan, Kristin S. Ondrak, Denise M. Danos, Meng Luo, Christopher M. Taylor, Lauren E. Meyer, Ann M. Byerley, Alexander W. Nguyen, Sabyasachi Chatterjee, Jiri Adamec, Lauri O. Byerley

School of Medicine Faculty Publications

Fiber’s effect on our gut microbes has been studied extensively, while knowledge of the effect of protein is sparse. Colonic putrefaction of dietary protein is known to produce several potentially detrimental compounds. This randomized controlled trial (RCT) uses a pre- and post-study design to investigate the effect of consuming higher levels of dietary protein on the gut microbiota and the metabolites it produces. Here, we describe our virtual recruitment efforts and RCT protocol. Potential participants lived throughout the contiguous US. Several recruitment methods were employed, of which email reached the largest group of people (approximately 9,100) and generated a 0.3% …

Egg White Hydrolysate In Hypertension: A Mechanistic Investigation Of Gut Microbiota Dependent And Independent Pathways, Emerson David Nolasco

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Cardiovascular diseases are one of the leading causes of mortality worldwide in which hypertension is a risk factor. Present pharmacological interventions require long-term adherence to the therapy and are often associated with undesirable side effects. Moreover, treatments have overlooked the role of the microbiome in the development of hypertension. Egg white hydrolysate (EWH) has exhibited antihypertensive properties with potential to be used as a natural alternative for the prevention and management of hypertension. However, EWH peptide’s effect on the gut microbiome remains yet to be elucidated. Studies have described that a portion of the ingested protein can remain undigested as …

Increasing Colorectal Cancer Screening Rates For Patients Without Insurance, Andrea F. Day

Doctor of Nursing Practice Projects

Background: Colorectal cancer is a leading cause of cancer-related death in the United States (U.S.), ranking as second most prevalent overall. Despite many initiatives, screening rates remain low, especially among clinic patients without insurance. The lack of an evidence-based screening protocol exacerbates these issues and increases the risk of advanced cancer and death. Initial data showed that 0% of patients were screened according to recommended guidelines.

Purpose: The project implemented a standard screening protocol to increase colorectal cancer screening rates in a rural Alabama free clinic for patients ages 45-64 lacking insurance.

Project Design: This quality improvement …

Early Recurrent Midgut Volvulus Post Ladd's Procedure In A Newborn: A Case Report, Nicole Clarke, Joanna Sajdlowska, John Paul Bustamante, Nishith Bhattacharyya

Rowan-Virtua School of Osteopathic Medicine Departmental Research

Ladd's procedure is the standard surgical intervention for intestinal malrotation. Although generally curative, rare cases of early postoperative complications, including adhesions or recurrent volvulus, can necessitate reoperation. We present the case of a full-term newborn girl who underwent emergent Ladd's procedure on Day 3 of life for malrotation with volvulus. She was discharged on postoperative Day 17 but returned the following day with recurrent bilious emesis. Imaging suggested partial obstruction. Exploratory laparotomy revealed recurrent volvulus with two twists at the duodenojejunal junction, which was successfully reduced. The patient recovered well and was discharged on postoperative Day 8. This case underscores …

History Of Bariatric Surgery Is Not Associated With Worse Clinical Outcomes At 5 Years In Patients Who Undergo Liver Transplantation, Do Han Kim Md, Donghyun Ko, Pedro Palacios Argueta Md, Wilhelm S. Basegoda Md, Jose A. Porres, Klaus E. Monkemuller, Paul T. Kroner Md

Posters

This study explores and compares outcomes of LT alone with LT in patients with a prior history of RYGB or SG, using a large multinational database.

Case Report: A Severe Case Of Post-Operative Ogilvie Syndrome Requiring Surgical Intervention, Aashna A. Chaudhry

Rowan-Virtua Research Day

Ogilvie Syndrome is an acute colonic pseudo-obstruction described as a paralysis of the colon with no real mechanical obstruction. This condition is oftentimes a benign post-surgical complication but can progress in severity if not treated appropriately. This case report presents a unique clinical case in which an adult female patient developed a severe case of Ogilvie syndrome postoperatively requiring surgical intervention.

Case Report: Petersen Hernia, A Rare Cause Of Bowel Ischemia, Brian Lim, Dhara Patel, Adeshola Fakulujo, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

We report a case of a 52-year-old female with history Roux-en-Y gastric bypass (RYGB) three years ago prior to presentation to the emergency department (ED) with sudden onset epigastric abdominal pain with radiation into the back of two hours duration. She was diagnosed with bowel ischemia due to internal hernia through a Petersen’s mesenteric defect. A Petersen’s mesenteric defect is one of the three possible internal hernia sites and occurs between the Roux limb mesentery and a defect in the transverse mesocolon.

Abdominal complaints are common in the emergency department with wide differential ranging from benign to emergent with need …

The Gut Microbiome And Knee Osteoarthritis: A Review Of Emerging Pathophysiologic Links, Krisha S. Patel, Maduka Gunasinghe, Umer Shah, Kushkumar K. Patel, Zarif Ladak

Rowan-Virtua Research Day

Background

Knee osteoarthritis (OA), a multifactorial degenerative joint disease with growing prevalence in aging and obese populations, leads to disabling pain. Traditionally viewed as mechanically driven, increasing research implicates systemic inflammation and metabolic and neuroimmune modulation. The gut microbiome—an ecosystem of commensal organisms regulating host immune, metabolic, and inflammatory regulation—has emerged as a potential contributor to OA pathogenesis and symptom severity. This review aims to synthesize literature evaluating associations between gut microbiota composition and knee OA, focusing on inflammatory pathways, pain modulation, and emerging therapies.

Methods

A literature search was conducted using PubMed, Embase, Scopus, and Web of Science. Inclusion …

Effects Of Social Isolation On Cecum Opioid Receptor Expression And Affective Behavior, Jordan Riser, John Tkaczynski, Nicole Shellenbarger, Maya Patel, Daniel Chandler, Daniel Manvich

Rowan-Virtua Research Day

BACKGROUND

Psychological stress can induce gastrointestinal symptoms and exacerbate existing gastrointestinal disorders, indicating an interaction between the central and enteric nervous systems. Central nervous system activation of opioid receptors stimulates sympathetic outflow to the enteric nervous system, delaying motility and reducing gastrointestinal secretions, producing a similar clinical presentation to IBS.

HYPOTHESIS

We hypothesize that social isolation induces anxiety states, disrupting homeostatic noradrenergic activity in the brain and gut, leading to neurophysiological changes in the cecum characterized by altered expression of opioid receptors.

METHODS

Sprague-Dawley rats were housed in either group (control) or socially isolated conditions. Affective behavior was assessed using …