ANTONEOPEKUNANTONE OPEKUN29.70970200000000-95.401625000000002846OPEKUN, ANTONEAssociate Professorplugins:FeaturedVideosFeatured Videosprns:coAuthorOfcoauthor ofprns:emailEncryptedemail addressFaculty Rankprns:fullNamefull nameprns:hasAuthorListauthor listprns:hasFacultyRankhas faculty rankprns:hasNetworkhas networkprns:hasPublicationVenuepublished inprns:informationResourceReferenceinformation resource referenceprns:isPrimaryPositionis primary positionprns:latitudelatitudeprns:longitudelongitudeprns:mainImagephotoprns:maxWeightmaximum weightprns:medlineTAjournal title abbreviationprns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:minWeightminimum weightprns:numberOfAuthorsnumber of authorsprns:numberOfConnectionsnumber of connectionsprns:numberOfPublicationsnumber of publicationsprns:personIdPerson IDprns:personInPrimaryPositionperson in primary positionprns:physicalNeighborOfphysical neighborprns:pluginSearchableDataProfilesRNS Plugin Searchable Dataprns:positionInDepartmentposition in departmentprns:positionInDivisionposition in divisionprns:predicateNodepredicate nodeprns:publicationDatepublication dateprns:similarTosimilar toprns:sortOrdersort orderprns:uniquenessWeightuniqueness weightprns:yearyearAcademic ArticleArticleDocumentbibo:pmidPubMed IdentifierAddressvivo:address1address line 1vivo:addressCitycityvivo:addressPostalCodepostal codevivo:addressStatestate or provincevivo:authorInAuthorshipselected publicationsvivo:authorRankauthor rank in publicationAuthorshipDepartmentDivisionvivo:hasResearchArearesearch areasvivo:hrJobTitleHR job titleInformation Resourcevivo:linkAnchorTextlink anchor textvivo:linkedAuthorlinked authorvivo:linkedInformationResourcelinked information resourcevivo:mailingAddressmailing addressvivo:personInPositionpositionsPositionvivo:positionInOrganizationposition in organizationvivo:preferredTitlepreferred titleURLLinkvivo:webpagewebpagerdf:predicatepredicaterdf:typetyperdfs:labellabelConceptAgentfoaf:firstNamefirst namefoaf:lastNamelast nameOrganizationPerson25015947Atmar RL, Opekun AR, Estes MK, Graham DYThe Journal of infectious diseasesReply to Kirby et al. J Infect Dis. 2015 Jan 01; 211(1):167.J Infect Dis2014-07-10T00:00:002014Reply to Kirby et al.Authorship 869582Authorship 965852Authorship 1041379Authorship 215752Authorship 246512Authorship 1603093Authorship 162381225540269Czak? R, Atmar RL, Opekun AR, Gilger MA, Graham DY, Estes MKClinical and vaccine immunology : CVIExperimental human infection with Norwalk virus elicits a surrogate neutralizing antibody response with cross-genogroup activity. Clin Vaccine Immunol. 2015 Feb; 22(2):221-8.Clin Vaccine Immunol2014-12-24T00:00:002014Experimental human infection with Norwalk virus elicits a surrogate neutralizing antibody response with cross-genogroup activity.25886994Schaefer JS, Attumi T, Opekun AR, Abraham B, Hou J, Shelby H, Graham DY, Streckfus C, Klein JRBMC immunologyMicroRNA signatures differentiate Crohn's disease from ulcerative colitis. BMC Immunol. 2015 Feb 10; 16:5.BMC Immunol2015-02-10T00:00:002015MicroRNA signatures differentiate Crohn's disease from ulcerative colitis.Authorship 451102Authorship 60852Authorship 631222Authorship 700964Authorship 793604Authorship 825256Authorship 89453Authorship 2939373Authorship 30084810Authorship 3052211425635121Ramani S, Neill FH, Opekun AR, Gilger MA, Graham DY, Estes MK, Atmar RLThe Journal of infectious diseasesMucosal and Cellular Immune Responses to Norwalk Virus. J Infect Dis. 2015 Aug 01; 212(3):397-405.J Infect Dis2015-01-29T00:00:002015Mucosal and Cellular Immune Responses to Norwalk Virus.26041041Atmar RL, Bernstein DI, Lyon GM, Treanor JJ, Al-Ibrahim MS, Graham DY, Vinj? J, Jiang X, Gregoricus N, Frenck RW, Moe CL, Chen WH, Ferreira J, Barrett J, Opekun AR, Estes MK, Borkowski A, Baehner F, Goodwin R, Edmonds A, Mendelman PMClinical and vaccine immunology : CVISerological Correlates of Protection against a GII.4 Norovirus. Clin Vaccine Immunol. 2015 Aug; 22(8):923-9.Clin Vaccine Immunol2015-06-03T00:00:002015Serological Correlates of Protection against a GII.4 Norovirus.26446608Saxena K, Blutt SE, Ettayebi K, Zeng XL, Broughman JR, Crawford SE, Karandikar UC, Sastri NP, Conner ME, Opekun AR, Graham DY, Qureshi W, Sherman V, Foulke-Abel J, In J, Kovbasnjuk O, Zachos NC, Donowitz M, Estes MKJournal of virologyHuman Intestinal Enteroids: a New Model To Study Human Rotavirus Infection, Host Restriction, and Pathophysiology. J Virol. 2016 01 01; 90(1):43-56.J Virol2015-10-07T00:00:002015Human Intestinal Enteroids: a New Model To Study Human Rotavirus Infection, Host Restriction, and Pathophysiology.12665791Willingham FF, Opekun AR, Graham DYGastrointestinal endoscopyEndoscopic demonstration of transient small bowel intussusception in a patient with adult celiac disease. Gastrointest Endosc. 2003 Apr; 57(4):626-7.Gastrointest Endosc2003-04-01T00:00:002003Endoscopic demonstration of transient small bowel intussusception in a patient with adult celiac disease.12809820Graham DY, Opekun AR, Hammoud F, Yamaoka Y, Reddy R, Osato MS, El-Zimaity HMThe American journal of gastroenterologyStudies regarding the mechanism of false negative urea breath tests with proton pump inhibitors. Am J Gastroenterol. 2003 May; 98(5):1005-9.Am J Gastroenterol2003-05-01T00:00:002003Studies regarding the mechanism of false negative urea breath tests with proton pump inhibitors.One Baylor PlazaHouston, 77030TX74Professor10Assistant Professor14Associate Professor16Associate Professor Emeritus47Distinguished Service Professor15645405Graham DY, Opekun AR, Willingham FF, Qureshi WAClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological AssociationVisible small-intestinal mucosal injury in chronic NSAID users. Clin Gastroenterol Hepatol. 2005 Jan; 3(1):55-9.Clin Gastroenterol Hepatol2005-01-01T00:00:002005Visible small-intestinal mucosal injury in chronic NSAID users.15691309Graham DY, Kudo M, Reddy R, Opekun ARHelicobacterPractical rapid, minimally invasive, reliable nonendoscopic method to obtain Helicobacter pylori for culture. Helicobacter. 2005 Feb; 10(1):1-3.Helicobacter2005-02-01T00:00:002005Practical rapid, minimally invasive, reliable nonendoscopic method to obtain Helicobacter pylori for culture.15845507Nurgalieva ZZ, Conner ME, Opekun AR, Zheng CQ, Elliott SN, Ernst PB, Osato M, Estes MK, Graham DYInfection and immunityB-cell and T-cell immune responses to experimental Helicobacter pylori infection in humans. Infect Immun. 2005 May; 73(5):2999-3006.Infect Immun2005-05-01T00:00:002005B-cell and T-cell immune responses to experimental Helicobacter pylori infection in humans.AYSEMINDIKOGLUF7Ij5CvqKYXxT4Ti53fXCraPKl+PkzA=AYSE MINDIKOGLU12008MINDIKOGLU, AYSEProfessor16579835Nurgalieva ZZ, Nugalieva ZZ, Opekun AR, Graham DYHelicobacterProblem of distinguishing false-positive tests from acute or transient Helicobacter pylori infections. Helicobacter. 2006 Apr; 11(2):69-74.Helicobacter2006-04-01T00:00:002006Problem of distinguishing false-positive tests from acute or transient Helicobacter pylori infections.16887493Opekun AR, Luu P, Gotschall AB, Abdalla N, Torres E, Rudd SB, Graham DY, Nurgalieva ZZ, Tsuchiya KTranslational research : the journal of laboratory and clinical medicinePoint-of-care Helicobacter pylori urine antibody detection in a multi-ethnic adult population in the United States. Transl Res. 2006 Jul; 148(1):13-8.Transl Res2006-07-01T00:00:002006Point-of-care Helicobacter pylori urine antibody detection in a multi-ethnic adult population in the United States.Authorship 326444127579322Opekun AR, Balesh AM, Shelby HTBioMed research internationalUse of the Biphasic (13)C-Sucrose/Glucose Breath Test to Assess Sucrose Maldigestion in Adults with Functional Bowel Disorders. Biomed Res Int. 2016; 2016:7952891.Biomed Res Int2016-08-08T00:00:002016Use of the Biphasic (13)C-Sucrose/Glucose Breath Test to Assess Sucrose Maldigestion in Adults with Functional Bowel Disorders.14745292Nanavati SA, Opekun AR, Hacken-Bitar JB, Cole RA, Anand BS, Graham DYJournal of clinical gastroenterologyMigrating shell fragment as a cause of recurrent obscure gastrointestinal bleeding. J Clin Gastroenterol. 2004 Feb; 38(2):137-8.J Clin Gastroenterol2004-02-01T00:00:002004Migrating shell fragment as a cause of recurrent obscure gastrointestinal bleeding.17585022Quezada-Calvillo R, Robayo-Torres CC, Opekun AR, Sen P, Ao Z, Hamaker BR, Quaroni A, Brayer GD, Wattler S, Nehls MC, Sterchi EE, Nichols BLThe Journal of nutritionContribution of mucosal maltase-glucoamylase activities to mouse small intestinal starch alpha-glucogenesis. J Nutr. 2007 Jul; 137(7):1725-33.J Nutr2007-07-01T00:00:002007Contribution of mucosal maltase-glucoamylase activities to mouse small intestinal starch alpha-glucogenesis.18826818Atmar RL, Opekun AR, Gilger MA, Estes MK, Crawford SE, Neill FH, Graham DYEmerging infectious diseasesNorwalk virus shedding after experimental human infection. Emerg Infect Dis. 2008 Oct; 14(10):1553-7.Emerg Infect Dis2008-10-01T00:00:002008Norwalk virus shedding after experimental human infection.19298341Elitsur Y, Tolia V, Gilger MA, Reeves-Garcia J, Schmidt-Sommerfeld E, Opekun AR, El-Zimaity H, Graham DY, Enmei KHelicobacterUrea breath test in children: the United States prospective, multicenter study. Helicobacter. 2009 Apr; 14(2):134-40.Helicobacter2009-04-01T00:00:002009Urea breath test in children: the United States prospective, multicenter study.19330928Robayo-Torres CC, Opekun AR, Quezada-Calvillo R, Villa X, Smith EO, Navarrete M, Baker SS, Nichols BLJournal of pediatric gastroenterology and nutrition13C-breath tests for sucrose digestion in congenital sucrase isomaltase-deficient and sacrosidase-supplemented patients. J Pediatr Gastroenterol Nutr. 2009 Apr; 48(4):412-8.J Pediatr Gastroenterol Nutr2009-04-01T00:00:00200913C-breath tests for sucrose digestion in congenital sucrase isomaltase-deficient and sacrosidase-supplemented patients.15810944Shahidzadeh R, Opekun A, Shiotani A, Graham DYHelicobacterEffect of the carbonic anhydrase inhibitor, acetazolamide, on Helicobacter pylori infection in vivo: a pilot study. Helicobacter. 2005 Apr; 10(2):136-8.Helicobacter2005-04-01T00:00:002005Effect of the carbonic anhydrase inhibitor, acetazolamide, on Helicobacter pylori infection in vivo: a pilot study.19934770Malaty HM, Fan X, Opekun AR, Thibodeaux C, Ferry GDJournal of pediatric gastroenterology and nutritionRising incidence of inflammatory bowel disease among children: a 12-year study. J Pediatr Gastroenterol Nutr. 2010 Jan; 50(1):27-31.J Pediatr Gastroenterol Nutr2010-01-01T00:00:002010Rising incidence of inflammatory bowel disease among children: a 12-year study.20195646Graham DY, Javed SU, Keihanian S, Abudayyeh S, Opekun ARJournal of gastroenterologyDual proton pump inhibitor plus amoxicillin as an empiric anti-H. pylori therapy: studies from the United States. J Gastroenterol. 2010 Aug; 45(8):816-20.J Gastroenterol2010-03-02T00:00:002010Dual proton pump inhibitor plus amoxicillin as an empiric anti-H. pylori therapy: studies from the United States.Authorship 3280711227562956Ettayebi K, Crawford SE, Murakami K, Broughman JR, Karandikar U, Tenge VR, Neill FH, Blutt SE, Zeng XL, Qu L, Kou B, Opekun AR, Burrin D, Graham DY, Ramani S, Atmar RL, Estes MKScience (New York, N.Y.)Replication of human noroviruses in stem cell-derived human enteroids. Science. 2016 09 23; 353(6306):1387-1393.Science2016-08-25T00:00:002016Replication of human noroviruses in stem cell-derived human enteroids.22150036Atmar RL, Bernstein DI, Harro CD, Al-Ibrahim MS, Chen WH, Ferreira J, Estes MK, Graham DY, Opekun AR, Richardson C, Mendelman PMThe New England journal of medicineNorovirus vaccine against experimental human Norwalk Virus illness. N Engl J Med. 2011 Dec 08; 365(23):2178-87.N Engl J Med2011-12-08T00:00:002011Norovirus vaccine against experimental human Norwalk Virus illness.22190401Czak? R, Atmar RL, Opekun AR, Gilger MA, Graham DY, Estes MKClinical and vaccine immunology : CVISerum hemagglutination inhibition activity correlates with protection from gastroenteritis in persons infected with Norwalk virus. Clin Vaccine Immunol. 2012 Feb; 19(2):284-7.Clin Vaccine Immunol2011-12-21T00:00:002011Serum hemagglutination inhibition activity correlates with protection from gastroenteritis in persons infected with Norwalk virus.16988899Brunetti-Pierri N, Opekun AR, Craigen WJJournal of inherited metabolic diseaseTwo familial cases of high blood galactose of unknown aetiology. J Inherit Metab Dis. 2006 Dec; 29(6):762.J Inherit Metab Dis2006-09-21T00:00:002006Two familial cases of high blood galactose of unknown aetiology.Authorship 100084519804842Wu DC, Hsu PI, Wu JY, Opekun AR, Kuo CH, Wu IC, Wang SS, Chen A, Hung WC, Graham DYClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological AssociationSequential and concomitant therapy with four drugs is equally effective for eradication of H pylori infection. Clin Gastroenterol Hepatol. 2010 Jan; 8(1):36-41.e1.Clin Gastroenterol Hepatol2009-10-03T00:00:002009Sequential and concomitant therapy with four drugs is equally effective for eradication of H pylori infection.20815703Reeck A, Kavanagh O, Estes MK, Opekun AR, Gilger MA, Graham DY, Atmar RLThe Journal of infectious diseasesSerological correlate of protection against norovirus-induced gastroenteritis. J Infect Dis. 2010 Oct 15; 202(8):1212-8.J Infect Dis2010-10-15T00:00:002010Serological correlate of protection against norovirus-induced gastroenteritis.22467598Harris RA, Nagy-Szakal D, Pedersen N, Opekun A, Bronsky J, Munkholm P, Jespersgaard C, Andersen P, Melegh B, Ferry G, Jess T, Kellermayer RInflammatory bowel diseasesGenome-wide peripheral blood leukocyte DNA methylation microarrays identified a single association with inflammatory bowel diseases. Inflamm Bowel Dis. 2012 Dec; 18(12):2334-41.Inflamm Bowel Dis2012-03-29T00:00:002012Genome-wide peripheral blood leukocyte DNA methylation microarrays identified a single association with inflammatory bowel diseases.21593238Kavanagh O, Estes MK, Reeck A, Raju RM, Opekun AR, Gilger MA, Graham DY, Atmar RLClinical and vaccine immunology : CVISerological responses to experimental Norwalk virus infection measured using a quantitative duplex time-resolved fluorescence immunoassay. Clin Vaccine Immunol. 2011 Jul; 18(7):1187-90.Clin Vaccine Immunol2011-05-18T00:00:002011Serological responses to experimental Norwalk virus infection measured using a quantitative duplex time-resolved fluorescence immunoassay.Authorship 840705828267073Nichols BL, Avery SE, Quezada-Calvillo R, Kilani SB, Lin AH, Burrin DG, Hodges BE, Chacko SK, Opekun AR, Hindawy ME, Hamaker BR, Oda SIJournal of pediatric gastroenterology and nutritionImproved Starch Digestion of Sucrase-deficient Shrews Treated With Oral Glucoamylase Enzyme Supplements. J Pediatr Gastroenterol Nutr. 2017 08; 65(2):e35-e42.J Pediatr Gastroenterol Nutr2017-08-01T00:00:002017Improved Starch Digestion of Sucrase-deficient Shrews Treated With Oral Glucoamylase Enzyme Supplements.23035177Ajami NJ, Barry MA, Carrillo B, Muhaxhiri Z, Neill FH, Prasad BV, Opekun AR, Gilger MA, Graham DY, Atmar RL, Estes MKClinical and vaccine immunology : CVIAntibody responses to norovirus genogroup GI.1 and GII.4 proteases in volunteers administered Norwalk virus. Clin Vaccine Immunol. 2012 Dec; 19(12):1980-3.Clin Vaccine Immunol2012-10-03T00:00:002012Antibody responses to norovirus genogroup GI.1 and GII.4 proteases in volunteers administered Norwalk virus.23103641Gilger M, Hamaker B, Nichols BL, Auricchio S, Treem WR, Naim HY, Heine M, Zimmer KP, Jones K, Eskandari R, Pinto BM, Rose DR, Lee BH, Quezada-Calvillo R, Adams B, Roach CM, Ma CX, Baker SS, Slawson MH, Robayo-Torres CC, Chumpitazi BP, Lecea CE, Opekun AR, Uhrich S, Wu Z, Huang JY, Scott CR, Chumpitazi BP, McMeans AR, Scholz D, Shulman RJ, Ao Z, Sterchi EE, Lin AHJournal of pediatric gastroenterology and nutritionResearch progress reported at the 50th Anniversary of the Discovery of Congenital Sucrase-Isomaltase Deficiency Workshop. J Pediatr Gastroenterol Nutr. 2012 Nov; 55 Suppl 2:S1.J Pediatr Gastroenterol Nutr2012-11-01T00:00:002012Research progress reported at the 50th Anniversary of the Discovery of Congenital Sucrase-Isomaltase Deficiency Workshop.23103649Robayo-Torres CC, Baker SS, Chumpitazi BP, Lecea CE, Nichols BL, Opekun ARJournal of pediatric gastroenterology and nutritionPoor starch digestion in children with CSID and recurrent abdominal pain. J Pediatr Gastroenterol Nutr. 2012 Nov; 55 Suppl 2:S32-4.J Pediatr Gastroenterol Nutr2012-11-01T00:00:002012Poor starch digestion in children with CSID and recurrent abdominal pain.23103651Chumpitazi BP, Robayo-Torres CC, Opekun AR, Nichols BL, Naim HYJournal of pediatric gastroenterology and nutritionCongenital sucrase-isomaltase deficiency: summary of an evaluation in one family. J Pediatr Gastroenterol Nutr. 2012 Nov; 55 Suppl 2:S36.J Pediatr Gastroenterol Nutr2012-11-01T00:00:002012Congenital sucrase-isomaltase deficiency: summary of an evaluation in one family.12177161Morrisett JD, Abdel-Fattah G, Hoogeveen R, Mitchell E, Ballantyne CM, Pownall HJ, Opekun AR, Jaffe JS, Oppermann S, Kahan BDJournal of lipid researchEffects of sirolimus on plasma lipids, lipoprotein levels, and fatty acid metabolism in renal transplant patients. J Lipid Res. 2002 Aug; 43(8):1170-80.J Lipid Res2002-08-01T00:00:002002Effects of sirolimus on plasma lipids, lipoprotein levels, and fatty acid metabolism in renal transplant patients.12540328Opekun AR, Abdalla N, Sutton FM, Hammoud F, Kuo GM, Torres E, Steinbauer J, Graham DYThe Journal of family practiceUrea breath testing and analysis in the primary care office. J Fam Pract. 2002 Dec; 51(12):1030-2.J Fam Pract2002-12-01T00:00:002002Urea breath testing and analysis in the primary care office.Authorship 104707215156900Graham DY, Opekun AR, Jogi M, Yamaoka Y, Lu H, Reddy R, El-Zimaity HMHelicobacterFalse negative urea breath tests with H2-receptor antagonists: interactions between Helicobacter pylori density and pH. Helicobacter. 2004 Feb; 9(1):17-27.Helicobacter2004-02-01T00:00:002004False negative urea breath tests with H2-receptor antagonists: interactions between Helicobacter pylori density and pH.15963485Opekun AR, Gotschall AB, Abdalla N, Agent C, Torres E, Sutton FM, Graham DY, Tsuchiya KClinical biochemistryImproved infrared spectrophotometer for point-of-care patient 13C-urea breath testing in the primary care setting. Clin Biochem. 2005 Aug; 38(8):731-4.Clin Biochem2005-08-01T00:00:002005Improved infrared spectrophotometer for point-of-care patient 13C-urea breath testing in the primary care setting.16527693Graham DY, Nurgalieva ZZ, El-Zimaity HM, Opekun AR, Campos A, Guerrero L, Chavez A, Cardenas VClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological AssociationNoninvasive versus histologic detection of gastric atrophy in a Hispanic population in North America. Clin Gastroenterol Hepatol. 2006 Mar; 4(3):306-14.Clin Gastroenterol Hepatol2006-03-01T00:00:002006Noninvasive versus histologic detection of gastric atrophy in a Hispanic population in North America.17380402Shiotani A, Opekun AR, Graham DYDigestive diseases and sciencesVisualization of the small intestine using capsule endoscopy in healthy subjects. Dig Dis Sci. 2007 Apr; 52(4):1019-25.Dig Dis Sci2007-02-16T00:00:002007Visualization of the small intestine using capsule endoscopy in healthy subjects.Authorship 8802672Authorship 8805372Authorship 8818632Authorship 8822501Authorship 882830429291380Mindikoglu AL, Opekun AR, Putluri N, Devaraj S, Sheikh-Hamad D, Vierling JM, Goss JA, Rana A, Sood GK, Jalal PK, Inker LA, Mohney RP, Tighiouart H, Christenson RH, Dowling TC, Weir MR, Seliger SL, Hutson WR, Howell CD, Raufman JP, Magder LS, Coarfa CTranslational research : the journal of laboratory and clinical medicineUnique metabolomic signature associated with hepatorenal dysfunction and mortality in cirrhosis. Transl Res. 2018 05; 195:25-47.Transl Res2017-12-12T00:00:002017Unique metabolomic signature associated with hepatorenal dysfunction and mortality in cirrhosis.29373493Cisse F, Erickson DP, Hayes AMR, Opekun AR, Nichols BL, Hamaker BRNutrientsTraditional Malian Solid Foods Made from Sorghum and Millet Have Markedly Slower Gastric Emptying than Rice, Potato, or Pasta. Nutrients. 2018 Jan 26; 10(2).Nutrients2018-01-26T00:00:002018Traditional Malian Solid Foods Made from Sorghum and Millet Have Markedly Slower Gastric Emptying than Rice, Potato, or Pasta.29392554Mindikoglu AL, Opekun AR, Mitch WE, Magder LS, Christenson RH, Dowling TC, Weir MR, Seliger SL, Howell CD, Raufman JP, Rana A, Goss JA, Khaderi SA, Vierling JMDigestive diseases and sciencesCystatin C Is a Gender-Neutral Glomerular Filtration Rate Biomarker in Patients with Cirrhosis. Dig Dis Sci. 2018 03; 63(3):665-675.Dig Dis Sci2018-02-01T00:00:002018Cystatin C Is a Gender-Neutral Glomerular Filtration Rate Biomarker in Patients with Cirrhosis.29348746Mindikoglu AL, Opekun AR, Gagan SK, Devaraj SGastroenterology research and practiceImpact of Time-Restricted Feeding and Dawn-to-Sunset Fasting on Circadian Rhythm, Obesity, Metabolic Syndrome, and Nonalcoholic Fatty Liver Disease. Gastroenterol Res Pract. 2017; 2017:3932491.Gastroenterol Res Pract2017-11-19T00:00:002017Impact of Time-Restricted Feeding and Dawn-to-Sunset Fasting on Circadian Rhythm, Obesity, Metabolic Syndrome, and Nonalcoholic Fatty Liver Disease.29504209Opekun AR, Gonzales SA, Al-Saadi MA, Graham DYHelicobacterBrief report: Lactobacillus bulgaricus GLB44 (Proviotic? ) plus esomeprazole for Helicobacter pylori eradication: A pilot study. Helicobacter. 2018 Apr; 23(2):e12476.Helicobacter2018-03-04T00:00:002018Brief report: Lactobacillus bulgaricus GLB44 (Proviotic? ) plus esomeprazole for Helicobacter pylori eradication: A pilot study.true1ProfessorProfessortrue1ProfessorProfessortrue1ProfessorProfessorAuthorship 101724Authorship 1018322D016480Living Beings12212910.486899Helicobacter pyloriD002239Disorders28450.952815Carbohydrate Metabolism, Inborn ErrorsD017250Disorders412810.787629Caliciviridae InfectionsD016481Disorders11112110.483661Helicobacter InfectionsAuthorship 9156354Authorship 9245666Authorship 934342429762379Chumpitazi BP, Robayo-Torres CC, Tsai CM, Opekun AR, Baker SS, Nichols BL, Gilger MAJournal of pediatric gastroenterology and nutritionDemographic and Clinical Correlates of Mucosal Disaccharidase Deficiencies in Children With Functional Dyspepsia. J Pediatr Gastroenterol Nutr. 2018 Jun; 66 Suppl 3:S52-S55.J Pediatr Gastroenterol Nutr2018-06-01T00:00:002018Demographic and Clinical Correlates of Mucosal Disaccharidase Deficiencies in Children With Functional Dyspepsia.29762381Robayo-Torres CC, Diaz-Sotomayor M, Hamaker BR, Baker SS, Chumpitazi BP, Opekun AR, Nichols BLJournal of pediatric gastroenterology and nutrition13C-Labeled-Starch Breath Test in Congenital Sucrase-isomaltase Deficiency. J Pediatr Gastroenterol Nutr. 2018 Jun; 66 Suppl 3:S61-S64.J Pediatr Gastroenterol Nutr2018-06-01T00:00:00201813C-Labeled-Starch Breath Test in Congenital Sucrase-isomaltase Deficiency.30101562Graham DY, Ketwaroo GA, Money ME, Opekun ARJournal of digestive diseasesEnzyme therapy for functional bowel disease-like post-prandial distress. J Dig Dis. 2018 Nov; 19(11):650-656.J Dig Dis2018-09-21T00:00:002018Enzyme therapy for functional bowel disease-like post-prandial distress.D001944Procedures591770.940295Breath TestsDepartment of MedicineDepartment of PediatricsDepartment of Molecular Virology & MicrobiologyMedicine-Gastroenterology & HepatolMedicine-Infectious DiseaseMolecular Virology & MicrobiologyPediatrics-GastroenterologyPediatrics-NutritionBaylor College of MedicineRICHARDKELLERMAYERRICHARD KELLERMAYER29.70508570000000-95.401808700000001082KELLERMAYER, RICHARDProfessorPRASUNJALALPRASUN JALAL29.70970200000000-95.401625000000001344JALAL, PRASUNAssistant ProfessorGAGANSOODGAGAN SOOD29.70970200000000-95.401625000000001605SOOD, GAGANProfessorMARYESTESMARY ESTES0.000000000000000.000000000000002318ESTES, MARYDistinguished Service ProfessorROBERTSHULMANROBERT SHULMAN0.000000000000000.000000000000002845SHULMAN, ROBERTProfessorDAVIDGRAHAMDAVID GRAHAM29.70508570000000-95.401808700000002360GRAHAM, DAVIDProfessorJIMSCHWARTZJIM SCHWARTZ29.70970200000000-95.401625000000002505SCHWARTZ, JIMAssociate Professor Emeritus1.67390.00675752309research areas3.841810.013930255coauthor of228.5914.646360similar to1169selected publicationsJOHNVIERLINGJOHN VIERLING29.70970200000000-95.40162500000000882VIERLING, JOHNProfessorYOSHIOYAMAOKAYOSHIO YAMAOKA0.000000000000000.000000000000003531YAMAOKA, YOSHIOProfessorRISESTRIBLINGRISE STRIBLING29.70970200000000-95.401625000000003609STRIBLING, RISEAssociate ProfessorROBERTATMARROBERT ATMAR0.000000000000000.000000000000003695ATMAR, ROBERTProfessorAuthorship 9524931131336765Estes MK, Ettayebi K, Tenge VR, Murakami K, Karandikar U, Lin SC, Ayyar BV, Cortes-Penfield NW, Haga K, Neill FH, Opekun AR, Broughman JR, Zeng XL, Blutt SE, Crawford SE, Ramani S, Graham DY, Atmar RLVirusesHuman Norovirus Cultivation in Nontransformed Stem Cell-Derived Human Intestinal Enteroid Cultures: Success and Challenges. Viruses. 2019 07 11; 11(7).Viruses2019-07-11T00:00:002019Human Norovirus Cultivation in Nontransformed Stem Cell-Derived Human Intestinal Enteroid Cultures: Success and Challenges.Authorship 1080546true1Associate ProfessorAssociate Professortrue1ProfessorProfessortrue1Assistant ProfessorAssistant Professortrue1Distinguished Service ProfessorDistinguished Service Professortrue1Associate Professor EmeritusAssociate Professor EmeritusAuthorship 975637931927066Mindikoglu AL, Abdulsada MM, Jain A, Choi JM, Jalal PK, Devaraj S, Mezzari MP, Petrosino JF, Opekun AR, Jung SYJournal of proteomicsIntermittent 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 Proteomics. 2020 04 15; 217:103645.J Proteomics2020-01-09T00:00:002020Intermittent 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.Authorship 976631131990709Opekun AR, Chumpitazi BP, Abdulsada MM, Nichols BLCurrent opinion in gastroenterologyRoutine disaccharidase testing: are we there yet? Curr Opin Gastroenterol. 2020 03; 36(2):101-109.Curr Opin Gastroenterol2020-03-01T00:00:002020Routine disaccharidase testing: are we there yet?Authorship 977467332025330Mindikoglu AL, Coarfa C, Opekun AR, Shah VH, Arab JP, Lazaridis KN, Putluri N, Ambati CR, Robertson MJ, Devaraj S, Jalal PK, Rana A, Goss JA, Dowling TC, Weir MR, Seliger SL, Raufman JP, Bernard DW, Vierling JMFuture science OAMetabolomic biomarkers are associated with mortality in patients with cirrhosis caused by primary biliary cholangitis or primary sclerosing cholangitis. Future Sci OA. 2019 Dec 17; 6(2):FSO441.Future Sci OA2019-12-17T00:00:002019Metabolomic biomarkers are associated with mortality in patients with cirrhosis caused by primary biliary cholangitis or primary sclerosing cholangitis.true1ProfessorProfessorAuthorship 987257132280698Opekun AR, Zierold C, Rode A, Blocki FA, Fiorini G, Saracino IM, Vaira D, Sutton FMBioMed research internationalClinical Performance of the Automated LIAISON? Meridian H. pylori SA Stool Antigen Test. Biomed Res Int. 2020; 2020:7189519.Biomed Res Int2020-03-19T00:00:002020Clinical Performance of the Automated LIAISON? Meridian H. pylori SA Stool Antigen Test.http://www.bcm.edu/cnrc/kidsabdominalpainCenter for Pediatric Abdominal Pain ResearchAuthorship 1003615733110154Mindikoglu AL, Abdulsada MM, Jain A, Jalal PK, Devaraj S, Wilhelm ZR, Opekun AR, Jung SYScientific reportsIntermittent fasting from dawn to sunset for four consecutive weeks induces anticancer serum proteome response and improves metabolic syndrome. Sci Rep. 2020 10 27; 10(1):18341.Sci Rep2020-10-27T00:00:002020Intermittent fasting from dawn to sunset for four consecutive weeks induces anticancer serum proteome response and improves metabolic syndrome.Authorship 1007936333376976Abdulsada MM, Wilhelm ZR, Opekun AR, Devaraj S, Jalal PK, Mindikoglu ALMetabolism openThe 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. Metabol Open. 2021 Mar; 9:100070.Metabol Open2020-12-04T00:00:002020The 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.Authorship 1011879333605658Wolfson S, Wilhelm Z, Opekun AR, Orth R, Shulman RJ, Chumpitazi BPJournal of pediatric gastroenterology and nutritionClinical Characterization of Pediatric Gastroparesis Using a Four-hour Gastric Emptying Scintigraphy Standard. J Pediatr Gastroenterol Nutr. 2021 06 01; 72(6):848-853.J Pediatr Gastroenterol Nutr2021-06-01T00:00:002021Clinical Characterization of Pediatric Gastroparesis Using a Four-hour Gastric Emptying Scintigraphy Standard.Authorship 1016843233888848Shaiken TE, Opekun ARScientific reportsAuthor Correction: Dissecting the cell to nucleus, perinucleus and cytosol. Sci Rep. 2021 Apr 22; 11(1):9178.Sci Rep2021-04-22T00:00:002021Author Correction: Dissecting the cell to nucleus, perinucleus and cytosol.Authorship 1170455Authorship 11954Authorship 138061424311403Hergenroeder GW, Ward NH, Yu X, Opekun A, Moore AN, Kozinetz CA, Powner DJProgress in transplantation (Aliso Viejo, Calif.)Randomized trial to evaluate nutritional status and absorption of enteral feeding after brain death. Prog Transplant. 2013 Dec; 23(4):374-82.Prog Transplant2013-12-01T00:00:002013Randomized trial to evaluate nutritional status and absorption of enteral feeding after brain death.true1ProfessorProfessorAuthorship 1060813336506940Mindikoglu AL, Park J, Opekun AR, Abdulsada MM, Wilhelm ZR, Jalal PK, Devaraj S, Jung SYMetabolism openDawn-to-dusk dry fasting induces anti-atherosclerotic, anti-inflammatory, and anti-tumorigenic proteome in peripheral blood mononuclear cells in subjects with metabolic syndrome. Metabol Open. 2022 Dec; 16:100214.Metabol Open2022-11-01T00:00:002022Dawn-to-dusk dry fasting induces anti-atherosclerotic, anti-inflammatory, and anti-tumorigenic proteome in peripheral blood mononuclear cells in subjects with metabolic syndrome.Authorship 10644201336824274Shaiken TE, Grimm SL, Siam M, Williams A, Rezaeian AH, Kraushaar D, Ricco E, Robertson MJ, Coarfa C, Jain A, Malovannaya A, Stossi F, Opekun AR, Price AP, Dubrulle JiScienceTranscriptome, proteome, and protein synthesis within the intracellular cytomatrix. iScience. 2023 Feb 17; 26(2):105965.iScience2023-01-13T00:00:002023Transcriptome, proteome, and protein synthesis within the intracellular cytomatrix.true1ProfessorProfessorAuthorship 122231Authorship 10723468Authorship 1073630337347142Harris RA, Bush AH, Eagar TN, Qian J, Greenwood MP, Opekun AR, Baldassano R, Guthery SL, Noe JD, Otley A, Rosh JR, Kugathasan S, Kellermayer RJournal of pediatric gastroenterology and nutritionExome Sequencing Implicates DGKZ , ESRRA , and GXYLT1 for Modulating Granuloma Formation in Crohn Disease. J Pediatr Gastroenterol Nutr. 2023 09 01; 77(3):354-357.J Pediatr Gastroenterol Nutr2023-06-22T00:00:002023Exome Sequencing Implicates DGKZ , ESRRA , and GXYLT1 for Modulating Granuloma Formation in Crohn Disease.37347494Ge Y, Billings WZ, Opekun A, Estes M, Graham D, Leon J, Koelle K, Shen Y, Atmar R, Lopman B, Handel AEmerging infectious diseasesEffect of Norovirus Inoculum Dose on Virus Kinetics, Shedding, and Symptoms. Emerg Infect Dis. 2023 07; 29(7):1349-1356.Emerg Infect Dis2023-07-01T00:00:002023Effect of Norovirus Inoculum Dose on Virus Kinetics, Shedding, and Symptoms. The microbiome and fecal microbiota transplantationtrue1Associate ProfessorAssociate ProfessorAuthorship 215502Authorship 1086704438192618Ciocca ET, Staggers KA, Carey J, Opekun AR, Hollinger FB, Keitel WA, Atmar RL, El Sahly HM, Whitaker JAVaccine: XDelays in Hepatitis A vaccination in people with HIV in Houston, Texas between 2010 and 2018. Vaccine X. 2024 Jan; 16:100422.Vaccine X2023-12-14T00:00:002023Delays in Hepatitis A vaccination in people with HIV in Houston, Texas between 2010 and 2018.Authorship 10894781038369131Patel H, Harris RA, Qian JH, Oezguen N, Watson A, Szigeti RG, Cho S, Ruan W, Britto S, Opekun A, Preidis G, Kellermayer RCellular and molecular gastroenterology and hepatologyGenetic Variation Between Small Bowel and Colon-Predominant Crohn Disease. Cell Mol Gastroenterol Hepatol. 2024 Feb 17.Cell Mol Gastroenterol Hepatol2024-02-17T00:00:002024Genetic Variation Between Small Bowel and Colon-Predominant Crohn Disease.Authorship 1089950438455231Al Lami Z, Kurtca M, Atique MU, Opekun AR, Siam MS, Jalal PK, Najafi B, Devaraj S, Mindikoglu ALMetabolism openDawn-to-dusk dry fasting decreases circulating inflammatory cytokines in subjects with increased body mass index. Metabol Open. 2024 Mar; 21:100274.Metabol Open2024-02-07T00:00:002024Dawn-to-dusk dry fasting decreases circulating inflammatory cytokines in subjects with increased body mass index.true1ProfessorProfessorAuthorship 259027Authorship 296192Authorship 42673Authorship 141138224253285Atmar RL, Opekun AR, Gilger MA, Estes MK, Crawford SE, Neill FH, Ramani S, Hill H, Ferreira J, Graham DYThe Journal of infectious diseasesDetermination of the 50% human infectious dose for Norwalk virus. J Infect Dis. 2014 Apr 01; 209(7):1016-22.J Infect Dis2013-11-18T00:00:002013Determination of the 50% human infectious dose for Norwalk virus.Authorship 524174Authorship 5315223Authorship 549181Authorship 380821Authorship 146348224815916Shaiken TE, Opekun ARScientific reportsDissecting the cell to nucleus, perinucleus and cytosol. Sci Rep. 2014 May 12; 4:4923.Sci Rep2014-05-12T00:00:002014Dissecting the cell to nucleus, perinucleus and cytosol.Authorship 583467Authorship 151376824937444Harris RA, Nagy-Szakal D, Mir SA, Frank E, Szigeti R, Kaplan JL, Bronsky J, Opekun A, Ferry GD, Winter H, Kellermayer REpigeneticsDNA methylation-associated colonic mucosal immune and defense responses in treatment-na?ve pediatric ulcerative colitis. Epigenetics. 2014 Aug; 9(8):1131-7.Epigenetics2014-06-17T00:00:002014DNA methylation-associated colonic mucosal immune and defense responses in treatment-na?ve pediatric ulcerative colitis.Authorship 67602Authorship 750483Authorship 768713Authorship 1558552