2021
Prevalence of Advanced Colorectal Neoplasia in Veterans
Imperiale TF, Daggy JK, Imler TD, Sherer EA, Kahi CJ, Larson J, Cardwell J, Johnson CS, Ahnen DJ, Antaki F, Ashley C, Baffy G, Dominitz JA, Hou J, Korsten MA, Nagar A, Promrat K, Robertson DJ, Saini S, Shergill A, Smalley WE. Prevalence of Advanced Colorectal Neoplasia in Veterans. Journal Of Clinical Gastroenterology 2021, 55: 876-883. PMID: 34049372, DOI: 10.1097/mcg.0000000000001402.Peer-Reviewed Original ResearchConceptsAdvanced neoplasiaProximal colorectal cancerColorectal cancerVeterans Affairs Medical CenterProximal advanced neoplasiaAdvanced colorectal neoplasiaCross-sectional studyIndependent effectsHigh overall prevalenceRace/ethnicityCRC prevalenceColorectal neoplasiaCRC riskOverall prevalenceMedical CenterDiagnostic subgroupsLogistic regressionPrevalenceAgeVeteransWomenColonoscopyNeoplasiaRiskAdvanced findings
2015
Quantification of Adequate Bowel Preparation for Screening or Surveillance Colonoscopy in Men
Clark BT, Protiva P, Nagar A, Imaeda A, Ciarleglio MM, Deng Y, Laine L. Quantification of Adequate Bowel Preparation for Screening or Surveillance Colonoscopy in Men. Gastroenterology 2015, 150: 396-405. PMID: 26439436, PMCID: PMC4728019, DOI: 10.1053/j.gastro.2015.09.041.Peer-Reviewed Original ResearchConceptsAdequate bowel preparationBBPS scoreSurveillance colonoscopyBowel preparationColon segmentsBBPS scoresSecond examinationWest Haven Veterans Affairs Medical CenterVeterans Affairs Medical CenterFirst examinationGuideline-recommended intervalsProspective observational studyDetection of adenomasIdentification of polypsColonoscopic evaluationPrimary outcomeSurveillance intervalsBlinded endoscopistsColonoscopy examinationObservational studyPrEP scaleMedical CenterInitial examinationStudy subjectsAdequate preparation
2014
Bleeding From a Duodenal Varix
Kinzel J, Pichetshote N, Dredar S, Aslanian H, Nagar A. Bleeding From a Duodenal Varix. Journal Of Clinical Gastroenterology 2014, 48: 362-364. PMID: 24518801, DOI: 10.1097/mcg.0000000000000004.Peer-Reviewed Original ResearchConceptsClass C cirrhosisDuodenal varicesEmbolization coilsChild's class C cirrhosisTransjugular intrahepatic portosystemic shuntIntrahepatic portosystemic shuntEUS-guided placementC cirrhosisCyanoacrylate injectionEctopic varicesInitial endoscopyPortosystemic shuntEndoscopic ultrasoundVaricesVariceal hemostasisExcellent hemostasisHemostasisAdvantageous modalityInjectionHematemesisCirrhosisPatientsEndoscopySubsequent attemptsShunt
2008
Prevention of post-ERCP pancreatitis: a little antacid might go a long way
Nagar AB, Gorelick F. Prevention of post-ERCP pancreatitis: a little antacid might go a long way. Gut 2008, 57: 1492. PMID: 18941003, DOI: 10.1136/gut.2008.157289.Peer-Reviewed Original ResearchEthanol Exposure Depletes Hepatic Pigment Epithelium-Derived Factor, a Novel Lipid Regulator
Chung C, Shugrue C, Nagar A, Doll JA, Cornwell M, Gattu A, Kolodecik T, Pandol SJ, Gorelick F. Ethanol Exposure Depletes Hepatic Pigment Epithelium-Derived Factor, a Novel Lipid Regulator. Gastroenterology 2008, 136: 331-340.e2. PMID: 18996124, PMCID: PMC2833423, DOI: 10.1053/j.gastro.2008.09.065.Peer-Reviewed Original ResearchConceptsPigment epithelium-derived factorEthanol-induced hepatic steatosisEthanol-induced steatosisMMP-2/9 activityPEDF levelsHepatic steatosisEthanol feedingLoss of PEDFAnimal modelsTriglyceride contentRecombinant pigment epithelium-derived factorNovel lipid regulatorLiver triglyceride contentLiver biopsy specimensEpithelium-derived factorEthanol fed animalsNormal liver samplesAccumulation of lipidsHistologic steatosisBiopsy specimensClinical studiesEthanol exposureHepatocellular carcinomaSteatosisPigment epithelium
2007
Isolated colonic ulcers: Diagnosis and management
Nagar AB. Isolated colonic ulcers: Diagnosis and management. Current Gastroenterology Reports 2007, 9: 422-428. PMID: 17991345, DOI: 10.1007/s11894-007-0053-9.Peer-Reviewed Original ResearchConceptsSolitary rectal ulcer syndromeNonsteroidal anti-inflammatory drugsManagement of constipationChronic gastrointestinal bleedingInflammatory bowel diseaseAnti-inflammatory drugsColonic ulcersNonspecific ulcersRectal ulcerStercoral ulcerationAbdominal painFecal impactionGastrointestinal bleedingColonic perforationAppropriate patientsBowel diseaseColonic ulcerationInfectious causesRight colonCertain infectionsUlcer syndromeIncidental findingCommon causeIsolated ulcerUlcers