A. Opekun

发表

Plant diversity patterns in neotropical dry forests and their conservation implications

D. Graham, M. Estes, S. Crawford, 2016 .

Norwalk Virus Shedding after Experimental Human Infection

D. Graham, M. Estes, S. Crawford, 2008, Emerging infectious diseases.

Visible small-intestinal mucosal injury in chronic NSAID users.

D. Graham, W. Qureshi, A. Opekun, 2005, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Efficacy of Ursodeoxycholic Acid in the Treatment of Primary Sclerosing Cholangitis in Children

A. Opekun, M. Gilger, W. Gleason, 2000, Journal of pediatric gastroenterology and nutrition.

Effects of sirolimus on plasma lipids, lipoprotein levels, and fatty acid metabolism in renal transplant patients DOI 10.1194/jlr.M100392-JLR200

C. Ballantyne, H. Pownall, A. Opekun, 2002, Journal of Lipid Research.

Mucosal and Cellular Immune Responses to Norwalk Virus.

D. Graham, M. Estes, F. Neill, 2015, The Journal of infectious diseases.

Norwalk virus infection of volunteers: new insights based on improved assays.

D. Graham, M. Estes, Tomoyuki N. Tanaka, 1994, The Journal of infectious diseases.

Improved infrared spectrophotometer for point-of-care patient 13C-urea breath testing in the primary care setting.

Elizabeth Torres, D. Graham, A. Opekun, 2005, Clinical biochemistry.

Use of the Biphasic 13C-Sucrose/Glucose Breath Test to Assess Sucrose Maldigestion in Adults with Functional Bowel Disorders

A. Opekun, A. Balesh, H. Shelby, 2016, BioMed research international.

Helicobacter pylori Infection in Children of Texas

D. Graham, A. Opekun, M. Gilger, 2000, Journal of pediatric gastroenterology and nutrition.

Urea breath testing and analysis in the primary care office.

D. Graham, J. Steinbauer, A. Opekun, 2002, The Journal of family practice.

Determination of the 50% human infectious dose for Norwalk virus.

D. Graham, M. Estes, S. Crawford, 2014, The Journal of infectious diseases.

Controlled comparison of topical anesthetic agents in flexible upper gastrointestinal endoscopy.

D. Graham, A. Opekun, J. L. Smith, 1985, Gastrointestinal endoscopy.

Spicy food and the stomach. Evaluation by videoendoscopy.

D. Graham, A. Opekun, J. L. Smith, 1988, JAMA.

Brief report: Lactobacillus bulgaricus GLB44 (Proviotic™) plus esomeprazole for Helicobacter pylori eradication: A pilot study

D. Graham, A. Opekun, Savannah A Gonzales, 2018, Helicobacter.

Effect of dietary cholesterol on cholesterol synthesis in breast-fed and formula-fed infants.

P. Klein, W. Wong, W. Insull, 1993, Journal of lipid research.

CORRIGENDUM: Dissecting the cell to nucleus, perinucleus and cytosol

A. Opekun, T. Shaiken, 2014, Scientific Reports.

Dissecting the cell to nucleus, perinucleus and cytosol

A. Opekun, T. Shaiken, 2014, Scientific Reports.

Human Intestinal Enteroids: a New Model To Study Human Rotavirus Infection, Host Restriction, and Pathophysiology

D. Graham, M. Estes, W. Qureshi, 2015, Journal of Virology.

Water source as risk factor for Helicobacter pylori infection in Peruvian children

D. Graham, P. Klein, A. Opekun, 1991, The Lancet.

Helicobacter pylori in the drinking water in Peru.

D. Graham, L. Engstrand, P. Klein, 1996, Gastroenterology.

Epidemiology of Campylobacter pylori infection: ethnic considerations.

D. Graham, P. Klein, A. Opekun, 1988, Scandinavian journal of gastroenterology. Supplement.

Two familial cases of high blood galactose of unknown aetiology

N. Brunetti‐Pierri, W. Craigen, A. Opekun, 2006, Journal of Inherited Metabolic Disease.

Effect of sirolimus on the metabolism of apoB100- containing lipoproteins in renal transplant patients.

C. Ballantyne, H. Pownall, A. Opekun, 2001, Transplantation.

Metabolism of Apo(a) and ApoB-100 in Human Lipoprotein(a)

A. Opekun, J. Guyton, D. Hachey, 1993 .

Replication of human noroviruses in stem cell–derived human enteroids

D. Graham, M. Estes, S. Crawford, 2016, Science.

Antibody Responses to Norovirus Genogroup GI.1 and GII.4 Proteases in Volunteers Administered Norwalk Virus

D. Graham, N. Ajami, M. Estes, 2012, Clinical and Vaccine Immunology.

Serological Responses to Experimental Norwalk Virus Infection Measured Using a Quantitative Duplex Time-Resolved Fluorescence Immunoassay

D. Graham, M. Estes, A. Opekun, 2011, Clinical and Vaccine Immunology.

Noninvasive versus histologic detection of gastric atrophy in a Hispanic population in North America.

D. Graham, A. Opekun, V. Cardenas, 2006, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Routine disaccharidase testing: are we there yet?

B. Chumpitazi, B. Nichols, A. Opekun, 2020, Current opinion in gastroenterology.

Serum Hemagglutination Inhibition Activity Correlates with Protection from Gastroenteritis in Persons Infected with Norwalk Virus

D. Graham, M. Estes, A. Opekun, 2011, Clinical and Vaccine Immunology.

Clarithromycin for the Eradication of Helicobacter Pylori

D. Graham, P. Klein, A. Opekun, 1993, Journal of clinical gastroenterology.

Recombinant Norwalk virus-like particles given orally to volunteers: phase I study.

D. Graham, M. Estes, A. Opekun, 1999, Gastroenterology.

Effect of different organic acids (citric, malic and ascorbic) on intragastric urease activity

D. Graham, A. Opekun, S. Abudayyeh, 2005, Alimentary Pharmacology and Therapeutics.

Early events in proton pump inhibitor‐associated exacerbation of corpus gastritis

Y. Yamaoka, A. Opekun, H. El-Zimaity, 2003, Alimentary pharmacology & therapeutics.

Comparison of the effect of intermittent administration and continuous infusion of famotidine on gastric pH in critically ill patients: results of a prospective, randomized, crossover study.

R. Fromm, M. Mojtahedzadeh, K. Guntupalli, 1995, Critical care medicine.

Rising Incidence of Inflammatory Bowel Disease Among Children: A 12-year Study

A. Opekun, G. Ferry, Xiaolin Fan, 2010, Journal of pediatric gastroenterology and nutrition.

Ablation of exaggerated meal-stimulated gastrin release in duodenal ulcer patients after clearance of Helicobacter (Campylobacter) pylori infection.

D. Graham, P. Klein, A. Opekun, 1990, The American journal of gastroenterology.

Dawn-to-dusk dry fasting induces anti-atherosclerotic, anti-inflammatory, and anti-tumorigenic proteome in peripheral blood mononuclear cells in subjects with metabolic syndrome

Jihwan Park, S. Devaraj, A. Opekun, 2022, Metabolism open.

Clinical Characterization of Pediatric Gastroparesis Using a Four-hour Gastric Emptying Scintigraphy Standard

B. Chumpitazi, R. Shulman, R. Orth, 2021, Journal of pediatric gastroenterology and nutrition.

Helicobacter pylori-associated exaggerated gastrin release in duodenal ulcer patients

D. Graham, P. Klein, A. Opekun, 1991 .

Helicobacter pylori-associated exaggerated gastrin release in duodenal ulcer patients. The effect of bombesin infusion and urea ingestion.

D. Graham, P. Klein, A. Opekun, 1991, Gastroenterology.

Problem of Distinguishing False‐Positive Tests from Acute or Transient Helicobacter pylori Infections

D. Graham, A. Opekun, Zhannat Z. Nugalieva, 2006, Helicobacter.

In vivo susceptibility of Campylobacter pylori.

D. Graham, P. Klein, A. Opekun, 1989, The American journal of gastroenterology.

Evidence of SV40 infections in hospitalized children.

J. Butel, C. Wong, A. Opekun, 1999, Human pathology.

Reply to Kirby et al.

D. Graham, M. Estes, A. Opekun, 2015, The Journal of infectious diseases.

CAMPYLOBACTER PYLORI DETECTED NONINVASIVELY BY THE 13C-UREA BREATH TEST

A. Opekun, L. Alpert, T. Boutton, 1987, The Lancet.

Traditional Malian Solid Foods Made from Sorghum and Millet Have Markedly Slower Gastric Emptying than Rice, Potato, or Pasta

B. Hamaker, B. Nichols, A. Opekun, 2018, Nutrients.

Contribution of mucosal maltase-glucoamylase activities to mouse small intestinal starch alpha-glucogenesis.

S. Wattler, M. Nehls, G. Brayer, 2007, The Journal of nutrition.

Sensitivity of the esophageal mucosa to pH in gastroesophageal reflux disease.

D. Graham, A. Opekun, J. L. Smith, 1989, Gastroenterology.

[13C]Aminopyrine breath test detects altered liver metabolism caused by low-dose oral contraceptives

D. Graham, P. Klein, A. Opekun, 1995, Digestive Diseases and Sciences.

False Negative Urea Breath Tests with H2‐Receptor Antagonists: Interactions Between Helicobacter pylori Density and pH

D. Graham, Y. Yamaoka, A. Opekun, 2004, Helicobacter.

Endoscopic demonstration of transient small bowel intussusception in a patient with adult celiac disease.

D. Graham, A. Opekun, F. Willingham, 2003, Gastrointestinal endoscopy.

Intermittent fasting from dawn to sunset for four consecutive weeks induces anticancer serum proteome response and improves metabolic syndrome

S. Jung, S. Devaraj, A. Opekun, 2020, Scientific Reports.

Effect of the Carbonic Anhydrase Inhibitor, Acetazolamide, on Helicobacter pylori Infection in vivo: A Pilot Study

D. Graham, A. Opekun, A. Shiotani, 2005, Helicobacter.

MicroRNA signatures differentiate Crohn’s disease from ulcerative colitis

A. Opekun, C. Streckfus, B. Abraham, 2015, BMC Immunology.

Intermittent fasting from dawn to sunset for 30 consecutive days is associated with anticancer proteomic signature and upregulates key regulatory proteins of glucose and lipid metabolism, circadian clock, DNA repair, cytoskeleton remodeling, immune system and cognitive function in healthy subjects.

J. Petrosino, S. Jung, M. Mezzari, 2020, Journal of proteomics.

Enzyme therapy for functional bowel disease‐like post‐prandial distress

D. Graham, M. Money, A. Opekun, 2018, Journal of digestive diseases.

Recombinant Norwalk virus-like particles as an oral vaccine.

D. Graham, M. Estes, M. Hardy, 1996, Archives of virology. Supplementum.

Transcriptome, proteome, and protein synthesis within the intracellular cytomatrix

F. Stossi, A. Malovannaya, C. Coarfa, 2023, iScience.

Genome‐wide peripheral blood leukocyte DNA methylation microarrays identified a single association with inflammatory bowel diseases

P. Munkholm, B. Melegh, A. Opekun, 2012, Inflammatory bowel diseases.

Norovirus vaccine against experimental human Norwalk Virus illness.

D. Graham, D. Bernstein, M. Estes, 2011, The New England journal of medicine.

Effect of age on the frequency of active Campylobacter pylori infection diagnosed by the [13C]urea breath test in normal subjects and patients with peptic ulcer disease.

D. Graham, P. Klein, A. Opekun, 1988, The Journal of infectious diseases.

Epigenetically associated colonic mucosal immune-and defense responses in treatment naïve pediatric ulcerative colitis

Kaplan, Eibe Frank, R. Harris, 2015 .

DNA methylation-associated colonic mucosal immune and defense responses in treatment-naïve pediatric ulcerative colitis

Eibe Frank, R. Harris, A. Opekun, 2014, Epigenetics.

Studies regarding the mechanism of false negative urea breath tests with proton pump inhibitors

D. Graham, Y. Yamaoka, A. Opekun, 2003, American Journal of Gastroenterology.

Norwalk virus vaccines: challenges and progress.

D. Graham, M. Estes, A. Opekun, 2000, The Journal of infectious diseases.

Dual proton pump inhibitor plus amoxicillin as an empiric anti-H. pylori therapy: studies from the United States

D. Graham, A. Opekun, S. Abudayyeh, 2010, Journal of Gastroenterology.

Sequential and concomitant therapy with four drugs is equally effective for eradication of H pylori infection.

D. Graham, W. Hung, Deng-Chyang Wu, 2010, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Serum Levels of Lipopolysaccharides and Risk of Advanced Colorectal Adenoma

D. Graham, H. El‐Serag, D. Rosen, 2020 .

Clinical Performance of the Automated LIAISON® Meridian H. pylori SA Stool Antigen Test

A. Opekun, D. Vaira, G. Fiorini, 2020, BioMed research international.

B-Cell and T-Cell Immune Responses to Experimental Helicobacter pylori Infection in Humans

D. Graham, M. Estes, A. Opekun, 2005, Infection and Immunity.

Challenge model for Helicobacter pylori infection in human volunteers

D. Graham, T. Monath, Y. Yamaoka, 2004, Gut.

Cystatin C Is a Gender-Neutral Glomerular Filtration Rate Biomarker in Patients with Cirrhosis

L. Magder, W. Mitch, S. Seliger, 2018, Digestive Diseases and Sciences.

Serological correlate of protection against norovirus-induced gastroenteritis.

D. Graham, M. Estes, A. Opekun, 2010, The Journal of infectious diseases.

Impact of Time-Restricted Feeding and Dawn-to-Sunset Fasting on Circadian Rhythm, Obesity, Metabolic Syndrome, and Nonalcoholic Fatty Liver Disease

S. Devaraj, A. Opekun, A. L. Mindikoglu, 2017, Gastroenterology research and practice.

Improved Starch Digestion of Sucrase-deficient Shrews Treated With Oral Glucoamylase Enzyme Supplements

D. Burrin, S. Oda, B. Hamaker, 2017, Journal of pediatric gastroenterology and nutrition.

13C-Breath Tests for Sucrose Digestion in Congenital Sucrase Isomaltase–deficient and Sacrosidase-supplemented Patients

S. Baker, B. Nichols, A. Opekun, 2009, Journal of pediatric gastroenterology and nutrition.

Demographic and Clinical Correlates of Mucosal Disaccharidase Deficiencies in Children With Functional Dyspepsia

B. Chumpitazi, S. Baker, B. Nichols, 2018, Journal of pediatric gastroenterology and nutrition.

Unique metabolomic signature associated with hepatorenal dysfunction and mortality in cirrhosis

L. Magder, H. Tighiouart, C. Coarfa, 2017, Translational research : the journal of laboratory and clinical medicine.

Non-replicating oral whole cell vaccine protective against enterotoxigenic Escherichia coli (ETEC) diarrhea: stimulation of anti-CFA (CFA/I) and anti-enterotoxin (anti-LT) intestinal IgA and protection against challenge with ETEC belonging to heterologous serotypes.

D. Graham, A. Opekun, D. Evans, 1988, FEMS microbiology immunology.

Mo1971 Sucrase-Isomaltase Genetic Variant Carriers Can Be Symptomatic

A. Opekun, H. Elser, A. DeJonge, 2014 .

Su1110 Yield of Prospective Disaccharidase Testing in Children With Recurrent Abdominal Pain

B. Chumpitazi, S. Baker, B. Nichols, 2013 .

Congenital Sucrase-Isomaltase Deficiency: Summary of an Evaluation in One Family

B. Chumpitazi, H. Naim, B. Nichols, 2012, Journal of Pediatric Gastroenterology and Nutrition - JPGN.

13C-Labeled-Starch Breath Test in Congenital Sucrase-isomaltase Deficiency

B. Chumpitazi, B. Hamaker, S. Baker, 2018, Journal of pediatric gastroenterology and nutrition.

Randomized Trial to Evaluate Nutritional Status and Absorption of Enteral Feeding after Brain Death

G. Hergenroeder, A. Moore, A. Opekun, 2013, Progress in transplantation.

Equivalence of litmus paper and intragastric pH probes for intragastric pH monitoring in the intensive care unit

R. Fromm, M. Mojtahedzadeh, A. Opekun, 1994, Critical care medicine.

Immunoprotective oral whole cell vaccine for enterotoxigenic Escherichia coli diarrhea prepared by in situ destruction of chromosomal and plasmid DNA with colicin E2.

D. Graham, A. Opekun, D. Evans, 1988, FEMS microbiology immunology.

The effect of four-week intermittent fasting from dawn to sunset on circulating brain-derived neurotrophic factor levels in subjects with metabolic syndrome and healthy subjects

S. Devaraj, A. Opekun, P. Jalal, 2020, Metabolism open.

Metabolomic biomarkers are associated with mortality in patients with cirrhosis caused by primary biliary cholangitis or primary sclerosing cholangitis

C. Coarfa, V. Shah, S. Seliger, 2019, Future science OA.

Leucine oxidation changes rapidly after dietary protein intake is altered in adult women but lysine flux is unchanged as is lysine incorporation into VLDL-apolipoprotein B-100.

P. Klein, T. Davis, A. Opekun, 1994, The Journal of nutrition.

1105 - Amyloglucosidase Supplementation Corrects Small Intestinal Isomaltase Insufficiency in Symptomatic Patients

D. Graham, B. Chumpitazi, A. Opekun, 2018 .

Poor Starch Digestion in Children With CSID and Recurrent Abdominal Pain

B. Chumpitazi, S. Baker, B. Nichols, 2012, Journal of pediatric gastroenterology and nutrition.

Serological Correlates of Protection against a GII.4 Norovirus

D. Graham, G. Lyon, D. Bernstein, 2015, Clinical and Vaccine Immunology.

Experimental Human Infection with Norwalk Virus Elicits a Surrogate Neutralizing Antibody Response with Cross-Genogroup Activity

D. Graham, M. Estes, A. Opekun, 2014, Clinical and Vaccine Immunology.

Helicobacter pylori and Abdominal Symptoms

A. Opekun, M. Gilger, 1999, Pediatrics.

Sequential therapy using high‐dose esomeprazole‐amoxicillin followed by gatifloxacin for Helicobacter pylori infection

J. Hoffman, A. Opekun, S. Abudayyeh, 2006, Alimentary pharmacology & therapeutics.

Human Norovirus Cultivation in Nontransformed Stem Cell-Derived Human Intestinal Enteroid Cultures: Success and Challenges

D. Graham, M. Estes, S. Crawford, 2019, Viruses.

Ravikiran Fluorescence Immunoassay Quantitative Duplex Time-Resolved Norwalk Virus Infection Measured Using a Serological Responses to Experimental

D. Graham, M. Estes, A. Opekun, 2011 .

MicroRNA signatures differentiate Crohn’s disease from ulcerative colitis

D. Graham, A. Opekun, C. Streckfus, 2015, BMC Immunology.

Triple Bacteroides Fecal Replacement Therapy for Relapsing Clostridium difficile Diarrhea (Fecal Transplantation Sans Feces): 577

D. Muzny, D. Graham, J. Petrosino, 2013 .

Antimony electrodes

D. Graham, A. Opekun, J. L. Smith, 1990, Digestive Diseases and Sciences.

Practical Rapid, Minimally Invasive, Reliable Nonendoscopic Method to Obtain Helicobacter pylori for Culture

A. Opekun, R. Reddy, D. Y. Graham, 2005, Helicobacter.

Point-of-care Helicobacter pylori urine antibody detection in a multi-ethnic adult population in the United States.

Phong Luu, Elizabeth Torres, D. Graham, 2006, Translational research : the journal of laboratory and clinical medicine.

Ranitidine and hepatotoxicity.

D. Graham, A. Opekun, J. L. Smith, 1985, Annals of internal medicine.

Rabeprazole containing triple therapy to eradicate Helicobacter pylori infection on the Texas‐Mexican border

A. Opekun, V. Cardenas, D. Graham, 2006, Alimentary pharmacology & therapeutics.

137 Randomized Controlled Comparison of Sequential and Quadruple (Concomitant) Therapies for H. pylori Infection

D. Graham, Deng-Chyang Wu, A. Opekun, 2008 .

Urea Breath Test in Children: The United States Prospective, Multicenter Study

A. Opekun, H. El-Zimaity, Y. Elitsur, 2009, Helicobacter.

Simple noninvasive method to test efficacy of drugs in the eradication of Helicobacter pylori infection: the example of combined bismuth subsalicylate and nitrofurantoin.

D. Graham, D. Morgan, P. Klein, 1991, The American journal of gastroenterology.

Effect of Norovirus Inoculum Dose on Virus Kinetics, Shedding, and Symptoms

K. Koelle, A. Handel, M. Estes, 2023, Emerging Infectious Diseases.

Genome‐wide peripheral blood leukocyte DNA methylation microarrays identified a single association with inflammatory bowel diseases

P. Munkholm, B. Melegh, A. Opekun, 2012, Inflammatory bowel diseases.

Visualization of the Small Intestine Using Capsule Endoscopy in Healthy Subjects

D. Graham, A. Opekun, A. Shiotani, 2007, Digestive Diseases and Sciences.

A controlled study of NSAID-induced small bowel injury using video capsule endoscopy

D. Graham, W. Qureshi, A. Opekun, 2003 .

Cimetidine, cigarette smoking, and recurrence of duodenal ulcer.

D. Graham, J. Weiss, B. Fleshler, 1984, The New England journal of medicine.

Metronidazole containing quadruple therapy for infection with metronidazole resistant Helicobacter pylori: a prospective study

A. Opekun, H. El-Zimaity, M. Osato, 2000, Alimentary pharmacology & therapeutics.