2012
Effect of Roux-en-Y gastric bypass on testosterone and prostate-specific antigen
Woodard G, Ahmed S, Podelski V, Hernandez-Boussard T, Presti J, Morton J. Effect of Roux-en-Y gastric bypass on testosterone and prostate-specific antigen. British Journal Of Surgery 2012, 99: 693-698. PMID: 22302466, DOI: 10.1002/bjs.8693.Peer-Reviewed Original ResearchConceptsProstate-specific antigenBody mass indexPSA levelsObese menGastric bypassSerum levelsWeight lossTestosterone levelsPSA massPercentage excess weight lossPlasma volumeExcess weight lossEffects of RouxSerum PSA levelsLow serum levelsSerum testosterone levelsConsecutive menMass indexSerum testosteroneProstate cancerMAIN OUTCOMETestosteroneDHEARYGBLongitudinal study
2011
B-type natriuretic peptide increases after gastric bypass surgery and correlates with weight loss
Changchien EM, Ahmed S, Betti F, Higa J, Kiely K, Hernandez-Boussard T, Morton J. B-type natriuretic peptide increases after gastric bypass surgery and correlates with weight loss. Surgical Endoscopy 2011, 25: 2338. PMID: 21424205, DOI: 10.1007/s00464-010-1565-1.Peer-Reviewed Original ResearchConceptsB-type natriuretic peptideGastric bypass surgeryExcess weight lossBypass surgeryWeight lossBNP concentrationsRisk factorsConcentrations of BNPB-type natriuretic peptide increasesLaparoscopic gastric bypass surgerySignificant excess weight lossBackgroundCoronary artery diseaseMean preoperative levelCardiac risk factorsPreventable risk factorsCongestive heart failureIntentional weight lossNatriuretic peptide concentrationsMultivariable linear regressionBNP increaseConclusionGastric bypassGastric bypassPostoperative levelsPreoperative levelsArtery disease