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Lactulose: mannitol diagnostic test by HPLC and LC-MSMS platforms: considerations for field studies of intestinal barrier function and environmental enteropathy.
Lee GO, Kosek P, Lima AA, Singh R, Yori PP, Olortegui MP, Lamsam JL, Oliveira DB, Guerrant RL, Kosek M. Lee GO, et al. Among authors: singh r. J Pediatr Gastroenterol Nutr. 2014 Oct;59(4):544-50. doi: 10.1097/MPG.0000000000000459. J Pediatr Gastroenterol Nutr. 2014. PMID: 24941958 Free PMC article.
Measurement of serum 7alpha-hydroxy-4-cholesten-3-one (or 7alphaC4), a surrogate test for bile acid malabsorption in health, ileal disease and irritable bowel syndrome using liquid chromatography-tandem mass spectrometry.
Camilleri M, Nadeau A, Tremaine WJ, Lamsam J, Burton D, Odunsi S, Sweetser S, Singh R. Camilleri M, et al. Among authors: singh r. Neurogastroenterol Motil. 2009 Jul;21(7):734-e43. doi: 10.1111/j.1365-2982.2009.01288.x. Epub 2009 Mar 13. Neurogastroenterol Motil. 2009. PMID: 19368662 Free PMC article.
Effects of chenodeoxycholate and a bile acid sequestrant, colesevelam, on intestinal transit and bowel function.
Odunsi-Shiyanbade ST, Camilleri M, McKinzie S, Burton D, Carlson P, Busciglio IA, Lamsam J, Singh R, Zinsmeister AR. Odunsi-Shiyanbade ST, et al. Among authors: singh r. Clin Gastroenterol Hepatol. 2010 Feb;8(2):159-65. doi: 10.1016/j.cgh.2009.10.020. Epub 2009 Oct 30. Clin Gastroenterol Hepatol. 2010. PMID: 19879973 Free PMC article. Clinical Trial.
Chenodeoxycholate in females with irritable bowel syndrome-constipation: a pharmacodynamic and pharmacogenetic analysis.
Rao AS, Wong BS, Camilleri M, Odunsi-Shiyanbade ST, McKinzie S, Ryks M, Burton D, Carlson P, Lamsam J, Singh R, Zinsmeister AR. Rao AS, et al. Among authors: singh r. Gastroenterology. 2010 Nov;139(5):1549-58, 1558.e1. doi: 10.1053/j.gastro.2010.07.052. Epub 2010 Aug 4. Gastroenterology. 2010. PMID: 20691689 Free PMC article. Clinical Trial.
Urine sugars for in vivo gut permeability: validation and comparisons in irritable bowel syndrome-diarrhea and controls.
Rao AS, Camilleri M, Eckert DJ, Busciglio I, Burton DD, Ryks M, Wong BS, Lamsam J, Singh R, Zinsmeister AR. Rao AS, et al. Among authors: singh r. Am J Physiol Gastrointest Liver Physiol. 2011 Nov;301(5):G919-28. doi: 10.1152/ajpgi.00168.2011. Epub 2011 Aug 11. Am J Physiol Gastrointest Liver Physiol. 2011. PMID: 21836056 Free PMC article.
Improving the detection of environmental enteric dysfunction: a lactulose, rhamnose assay of intestinal permeability in children aged under 5 years exposed to poor sanitation and hygiene.
Faubion WA, Camilleri M, Murray JA, Kelly P, Amadi B, Kosek MN, Enders F, Larson J, Grover M, Boe G, Dyer R, Singh R. Faubion WA, et al. Among authors: singh r. BMJ Glob Health. 2016 Jul 4;1(1):e000066. doi: 10.1136/bmjgh-2016-000066. eCollection 2016. BMJ Glob Health. 2016. PMID: 28588929 Free PMC article.
Age and Sex Normalization of Intestinal Permeability Measures for the Improved Assessment of Enteropathy in Infancy and Early Childhood: Results From the MAL-ED Study.
Kosek MN, Lee GO, Guerrant RL, Haque R, Kang G, Ahmed T, Bessong P, Ali A, Mduma E, Peñataro Yori P, Faubion WA, Lima AAM, Paredes Olortegui M, Mason C, Babji S, Singh R, Qureshi S, Kosek PS, Samie A, Pascal J, Shrestha S, McCormick BJJ, Seidman JC, Lang DR, Zaidi A, Caulfield LE, Gottlieb M; MAL-ED Network. Kosek MN, et al. Among authors: singh r. J Pediatr Gastroenterol Nutr. 2017 Jul;65(1):31-39. doi: 10.1097/MPG.0000000000001610. J Pediatr Gastroenterol Nutr. 2017. PMID: 28644347
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