Sonia K. Ramsy, MD

Title(s)Professor of Clinical Pediatrics
SchoolKeck School of Medicine of Usc
AddressCHL Mail Stop 78
Off Campus
Los Angeles CA 90089
Phone+1 323 361 5924
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    Other Positions
    Title(s)Vice Chair of Faculty Development


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    Research interests, include: Probiotics and studying the gut micro biome. Ongoing research studies, include: 1. Studies to investigate the role of gut micro biome in a number of pediatric disorders. 2. Studying the effect of probiotics and how they modify the gut microbiota. 3. NIH-funding to study the effect of probiotics on children with irritable bowel syndrome and how probiotics modify gut micro biota.

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Medical status of 219 children with biliary atresia surviving long-term with their native livers: results from a North American multicenter consortium. J Pediatr. 2014 Sep; 165(3):539-546.e2. Ng VL, Haber BH, Magee JC, Miethke A, Murray KF, Michail S, Karpen SJ, Kerkar N, Molleston JP, Romero R, Rosenthal P, Schwarz KB, Shneider BL, Turmelle YP, Alonso EM, Sherker AH, Sokol RJ, Childhood Liver Disease Research and Education Network (CHiLDREN). PMID: 25015575; PMCID: PMC4144331.
      View in: PubMed   Mentions: 25     Fields:    Translation:Humans
    2. Genetic variants associated with Crohn's disease. Appl Clin Genet. 2013; 6:25-32. Michail S, Bultron G, Depaolo RW. PMID: 23935379; PMCID: PMC3735034.
      View in: PubMed   Mentions: 11  
    3. Hemodialysis treatment on an adult patient with Down syndrome associated with ectopic right kidney chronic obstructive nephropathy and secondary amyloidosis. Saudi J Kidney Dis Transpl. 2013 Mar; 24(2):322-5. Kosmadakis G, Smirloglou D, Gobou A, Draganis T, Michail S. PMID: 23538358.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    4. Quantitative profiling of gut microbiota of children with diarrhea-predominant irritable bowel syndrome. Am J Gastroenterol. 2012 Nov; 107(11):1740-51. Rigsbee L, Agans R, Shankar V, Kenche H, Khamis HJ, Michail S, Paliy O. PMID: 22986438.
      View in: PubMed   Mentions: 81     Fields:    Translation:HumansCells
    5. Severe upper extremity polyneuropathy due to inferior brachial plexus compression as a result of left subclavian artery pseudoaneurysm. Saudi J Kidney Dis Transpl. 2012 Sep; 23(5):1028-31. Kosmadakis G, Pappas P, Gobou A, Smirloglou D, Michail S. PMID: 22982917.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    6. Advances in inflammatory bowel diseases in children. Minerva Pediatr. 2012 Jun; 64(3):257-70. Michail S, Ramsy M, Soliman E. PMID: 22555319.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    7. Alterations in the gut microbiome of children with severe ulcerative colitis. Inflamm Bowel Dis. 2012 Oct; 18(10):1799-808. Michail S, Durbin M, Turner D, Griffiths AM, Mack DR, Hyams J, Leleiko N, Kenche H, Stolfi A, Wine E. PMID: 22170749; PMCID: PMC3319508.
      View in: PubMed   Mentions: 129     Fields:    Translation:HumansCells
    8. End-stage renal disease due to hydronephrosis in a patient with artificial urinary sphincter. Int J Artif Organs. 2011 Nov; 34(11):1106-8. Kosmadakis G, Smirloglou D, Gobou A, Draganis T, Michail S. PMID: 22183524.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    9. Acute kidney injury due to rhabdomyolysis in narcotic drug users. Int J Artif Organs. 2011 Jul; 34(7):584-8. Kosmadakis G, Michail O, Filiopoulos V, Papadopoulou P, Michail S. PMID: 21786249.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    10. Distal gut microbiota of adolescent children is different from that of adults. FEMS Microbiol Ecol. 2011 Aug; 77(2):404-12. Agans R, Rigsbee L, Kenche H, Michail S, Khamis HJ, Paliy O. PMID: 21539582; PMCID: PMC4502954.
      View in: PubMed   Mentions: 121     Fields:    Translation:HumansCells
    11. Gut microbiota is not modified by Randomized, Double-blind, Placebo-controlled Trial of VSL#3 in Diarrhea-predominant Irritable Bowel Syndrome. Probiotics Antimicrob Proteins. 2011 Mar; 3(1):1-7. Michail S, Kenche H. PMID: 22247743; PMCID: PMC3255476.
      View in: PubMed   Mentions: 40     Fields:    
    12. Outcome following thiopurine use in children with ulcerative colitis: a prospective multicenter registry study. Am J Gastroenterol. 2011 May; 106(5):981-7. Hyams JS, Lerer T, Mack D, Bousvaros A, Griffiths A, Rosh J, Otley A, Evans J, Stephens M, Kay M, Keljo D, Pfefferkorn M, Saeed S, Crandall W, Michail S, Kappelman MD, Grossman A, Samson C, Sudel B, Oliva-Hemker M, Leleiko N, Markowitz J, Pediatric Infl ammatory Bowel Disease Collaborative Research Group Registry. PMID: 21224840.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    13. Comparison of the influence of angiotensin-converting enzyme inhibitor lisinopril and angiotensin II receptor antagonist losartan in patients with idiopathic membranous nephropathy and nephrotic syndrome. Scand J Urol Nephrol. 2010 Sep; 44(4):251-6. Kosmadakis G, Filiopoulos V, Georgoulias C, Tentolouris N, Michail S. PMID: 20201749.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    14. Disseminated histoplasmosis and pneumocystis pneumonia in a child with Crohn disease receiving infliximab. J Pediatr Gastroenterol Nutr. 2010 Aug; 51(2):221-2. Tschudy J, Michail S. PMID: 20410844.
      View in: PubMed   Mentions: 13     Fields:    Translation:HumansAnimals
    15. Lethal Strongyloides stercoralis superinfection in an immunocompromised patient. Ren Fail. 2010 Jul; 32(6):750-2. Kosmadakis G, Georgoulias C, Filiopoulos V, Stefanou I, Smirloglou D, Michail S. PMID: 20540646.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansAnimals
    16. Comparison of immunosuppressive therapeutic regimens in patients with nephrotic syndrome due to idiopathic membranous nephropathy. Ren Fail. 2010 Jun; 32(5):566-71. Kosmadakis G, Filiopoulos V, Smirloglou D, Skarlas P, Georgoulias C, Michail S. PMID: 20486839.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    17. Quantitative evaluation of proteinuria by estimation of the protein/creatinine ratio in a random urine sample. Ren Fail. 2010 Jan; 32(2):153-6. Kosmadakis G, Filiopoulos V, Georgoulias C, Smirloglou D, Draganis T, Michail S. PMID: 20199174.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    18. The validity of fractional excretion of uric acid in the diagnosis of acute kidney injury due to decreased kidney perfusion. Am J Kidney Dis. 2009 Dec; 54(6):1186-7. Kosmadakis G, Viskaduraki M, Michail S. PMID: 19932879.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    19. The role of probiotics in allergic diseases. Allergy Asthma Clin Immunol. 2009 Oct 22; 5(1):5. Michail S. PMID: 19946408; PMCID: PMC2776230.
      View in: PubMed   Mentions: 8  
    20. High-throughput quantitative analysis of the human intestinal microbiota with a phylogenetic microarray. Appl Environ Microbiol. 2009 Jun; 75(11):3572-9. Paliy O, Kenche H, Abernathy F, Michail S. PMID: 19363078; PMCID: PMC2687317.
      View in: PubMed   Mentions: 43     Fields:    Translation:HumansCells
    21. Rapunzel syndrome-a rare cause of multiple jejunal intussusception. South Med J. 2009 Apr; 102(4):416-8. Kibria R, Michail S, Ali SA. PMID: 19279516.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    22. Efficacy of probiotics in the treatment of pediatric atopic dermatitis: a meta-analysis of randomized controlled trials. Ann Allergy Asthma Immunol. 2008 Nov; 101(5):508-16. Michail SK, Stolfi A, Johnson T, Onady GM. PMID: 19055205.
      View in: PubMed   Mentions: 21     Fields:    Translation:Humans
    23. An update on pediatric gastroenterology and nutrition: a review of some recent advances. Curr Probl Pediatr Adolesc Health Care. 2008 Aug; 38(7):204-28. Carvalho RS, Michail S, Ashai-Khan F, Mezoff AG. PMID: 18647667.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    24. An unusual cause of postfundoplication vomiting. J Pediatr Surg. 2008 Mar; 43(3):E45-7. Michail S, Nanagas V, Mezoff AG. PMID: 18358274.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    25. Gastroesophageal reflux. Pediatr Rev. 2007 Mar; 28(3):101-10. Michail S. PMID: 17332169.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    26. The expression of matrix metalloproteinase-11 protein in various types of glomerulonephritis. Nephrol Dial Transplant. 2007 Jan; 22(1):109-17. Nakopoulou L, Lazaris AC, Boletis I, Michail S, Iatrou C, Papadakis G, Athanassiadou S, Stathakis C. PMID: 17085465.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansCells
    27. Clinical efficacy of probiotics: review of the evidence with focus on children. J Pediatr Gastroenterol Nutr. 2006 Oct; 43(4):550-7. NASPGHAN Nutrition Report Committee, Michail S, Sylvester F, Fuchs G, Issenman R. PMID: 17033538.
      View in: PubMed   Mentions: 22     Fields:    Translation:Humans
    28. Use of wireless capsule endoscopy in the management of severe Henoch-Schonlein purpura. Pediatrics. 2006 Sep; 118(3):e904-6. Preud'Homme DL, Michail S, Hodges C, Milliken T, Mezoff AG. PMID: 16880250.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    29. Early markers of renal dysfunction in patients with sickle cell/beta-thalassemia. Kidney Int. 2006 Jun; 69(11):2037-42. Voskaridou E, Terpos E, Michail S, Hantzi E, Anagnostopoulos A, Margeli A, Simirloglou D, Loukopoulos D, Papassotiriou I. PMID: 16501491.
      View in: PubMed   Mentions: 27     Fields:    Translation:Humans
    30. Capsule endoscopy in pediatric patients with hamartomatous polyp syndromes. J Pediatr Gastroenterol Nutr. 2006 Feb; 42(2):240-2. Mezoff A, Prued'Homme D, Hodges C, Milliken T, Michail S. PMID: 16456423.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    31. Urgent superselective segmental renal artery embolization in the treatment of life-threatening renal hemorrhage. Urol Int. 2006; 77(1):34-41. Pappas P, Leonardou P, Papadoukakis S, Zavos G, Michail S, Boletis J, Tzortzis G. PMID: 16825813.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    32. Role of selectins in the intestinal epithelial migration of eosinophils. Pediatr Res. 2005 Oct; 58(4):644-7. Michail S, Mezoff E, Abernathy F. PMID: 16189187.
      View in: PubMed   Mentions: 8     Fields:    Translation:HumansCells
    33. The use of Lactobacillus GG in irritable bowel syndrome in children: a double-blind randomized control trial. J Pediatr. 2005 Aug; 147(2):197-201. Bauserman M, Bausserman M, Michail S. PMID: 16126049.
      View in: PubMed   Mentions: 62     Fields:    Translation:HumansCellsCTClinical Trials
    34. Polyethylene glycol for constipation in children younger than eighteen months old. J Pediatr Gastroenterol Nutr. 2004 Aug; 39(2):197-9. Michail S, Gendy E, Preud'Homme D, Mezoff A. PMID: 15269628.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    35. A new model for studying eosinophil migration across cultured intestinal epithelial monolayers. J Pediatr Gastroenterol Nutr. 2004 Jul; 39(1):56-63. Michail S, Abernathy F. PMID: 15187782.
      View in: PubMed   Mentions: 6     Fields:    Translation:HumansCells
    36. Thrombotic microangiopathy in a patient with Sezary syndrome treated with interferon-alpha. Nephrol Dial Transplant. 2004 Mar; 19(3):733-5. Politou M, Tsaftarides P, Vassiliades J, Siakantaris MP, Michail S, Nakopoulou L, Pangalis GA, Vaiopoulos G. PMID: 14767035.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    37. Lactobacillus plantarum inhibits the intestinal epithelial migration of neutrophils induced by enteropathogenic Escherichia coli. J Pediatr Gastroenterol Nutr. 2003 Mar; 36(3):385-91. Michail S, Abernathy F. PMID: 12604980.
      View in: PubMed   Mentions: 7     Fields:    Translation:HumansCells
    38. Enteropathogenic Escherichia coli: stimulating neutrophil migration across a cultured intestinal epithelium without altering transepithelial conductance. J Pediatr Gastroenterol Nutr. 2003 Feb; 36(2):253-60. Michail SK, Halm DR, Abernathy F. PMID: 12548063.
      View in: PubMed   Mentions: 7     Fields:    Translation:HumansCells
    39. Relapse of predominant tubulointerstitial lupus nephritis. Lupus. 2003; 12(9):728-9. Michail S, Stathakis Ch, Marinaki S, Revenas C, Nakopoulou L, Vaiopoulos G. PMID: 14514141.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    40. A rare rectal tumor presenting with encopresis and rectal bleeding in a three-year-old girl: case report and review of the literature. J Pediatr Gastroenterol Nutr. 2002 Oct; 35(4):580-2. Michail S, Broxon E, Mezoff A, Preud'homme D, Hitch D. PMID: 12394388.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    41. Lactobacillus plantarum reduces the in vitro secretory response of intestinal epithelial cells to enteropathogenic Escherichia coli infection. J Pediatr Gastroenterol Nutr. 2002 Sep; 35(3):350-5. Michail S, Abernathy F. PMID: 12352526.
      View in: PubMed   Mentions: 26     Fields:    Translation:HumansCells
    42. Evaluation of E-cadherin/catenin complex in primary and secondary glomerulonephritis. Am J Kidney Dis. 2002 Mar; 39(3):469-74. Nakopoulou L, Lazaris ACh, Boletis IN, Michail S, Giannopoulou I, Zeis PM, Stathakis CP, Davaris PS. PMID: 11877565.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    43. Laparoscopic cholecystectomy: effective treatment for chronic abdominal pain in children with acalculous biliary pain. J Pediatr Surg. 2001 Sep; 36(9):1394-6. Michail S, Preud'Homme D, Christian J, Nanagas V, Goodwin C, Hitch D, Mezoff A. PMID: 11528613.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    44. Probiotics inhibit enteropathogenic E. coli adherence in vitro by inducing intestinal mucin gene expression. Am J Physiol. 1999 04; 276(4):G941-50. Mack DR, Michail S, Wei S, McDougall L, Hollingsworth MA. PMID: 10198338.
      View in: PubMed   Mentions: 236     Fields:    Translation:HumansCells
    45. Acute renal failure in an adult patient with Henoch-Schoenlein purpura after episode of macroscopic hematuria. Ren Fail. 1999 Jan; 21(1):107-11. Michail S, Stathakis C, Nakopoulou L, Aroni K, Revenas K, Avdikou K, Vaiopoulos G. PMID: 10048122.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    46. Abnormal expression of brush-border membrane transporters in the duodenal mucosa of two patients with microvillus inclusion disease. J Pediatr Gastroenterol Nutr. 1998 Nov; 27(5):536-42. Michail S, Collins JF, Xu H, Kaufman S, Vanderhoof J, Ghishan FK. PMID: 9822319.
      View in: PubMed   Mentions: 7     Fields:    Translation:HumansCells
    47. Hyperselective renal artery embolisation in the treatment of post-traumatic iatrogenic haematuria: report of two cases. Int Angiol. 1998 Mar; 17(1):58-61. Tzortzis G, Kolomodi D, Stathopoulou S, Kostakis A, Michail S, Pappas P, Revenas K. PMID: 9657250.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    48. Henoch-Schoenlein purpura and acute interstitial nephritis after intravenous vancomycin administration in a patient with a staphylococcal infection. Scand J Rheumatol. 1998; 27(3):233-5. Michail S, Vaiopoulos G, Nakopoulou L, Revenas C, Aroni K, Karam P, Stathakis C, Thosios T. PMID: 9645421.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    49. Acute renal failure associated with immunoglobulin administration. Nephrol Dial Transplant. 1997 Jul; 12(7):1497-9. Michail S, Nakopoulou L, Stavrianopoulos I, Stamatiadis D, Avdikou K, Vaiopoulos G, Stathakis C. PMID: 9249797.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    50. Soy-polysaccharide-supplemented soy formula enhances mucosal disaccharidase levels following massive small intestinal resection in rats. J Pediatr Gastroenterol Nutr. 1997 Feb; 24(2):140-5. Michail S, Mohammadpour M, Park JH, Vanderhoof JA. PMID: 9106099.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    51. A case of thyrotoxic hypokalaemic periodic paralysis in a Greek man. Nephrol Dial Transplant. 1996 Aug; 11(8):1634-6. Michail S, Dagounaki P, Stamatiadis D, Vaiopoulos G, Stathakis C, Vosnides G. PMID: 8856226.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    52. Effect of glutamine-supplemented elemental diet on mucosal adaptation following bowel resection in rats. J Pediatr Gastroenterol Nutr. 1995 Nov; 21(4):394-8. Michail S, Mohammadpour H, Park JH, Vanderhoof JA. PMID: 8583290.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    53. Septicaemia in chronic renal failure. J Chemother. 1989 Jul; 1(4 Suppl):835-8. Stathakis C, Michail S, Agrafiotis A, Bristogiannis G, Katopodis K, Lagouranis A, Dimarogona K, Avlami A, Vosnides G. PMID: 16312661.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    54. An unusual source of error. Anesth Analg. 1985 Jun; 64(6):652. Goldberg M, Michail S, Niswander D. PMID: 4003788.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    55. [Therapeutic progress in glaucoma during the past 30 years]. Rev Chir Oncol Radiol O R L Oftalmol Stomatol Ser Oftalmol. 1975 Apr-Jun; 19(2):89-91. Michail S. PMID: 127266.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    56. Serological relationships between Pythium irregulare Buisman and certain tomato cultivars. Zentralbl Bakteriol Parasitenkd Infektionskr Hyg. 1974; 129(1):179-82. el-Rehim MA, Ibrahim IA, Michail SH, el-Meleigi MA. PMID: 4408353.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    57. Trigeminothalamic fibre connexions in the dog and the pig. An experimental study with the retrograde cell degeneration method. J Anat. 1970 Nov; 107(Pt 3):557-66. Michail S, Karamanlidis AN. PMID: 5492944; PMCID: PMC1233879.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    58. [Cryotherapy in a case of ocular acne rosacea]. Ann Ocul (Paris). 1970 Jul; 203(7):669-72. Michail S. PMID: 4247863.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    59. [Anatomo-pathological study of a case of ocular trauma caused by a chemical pencil]. Arch Ophtalmol Rev Gen Ophtalmol. 1970 Mar; 30(3):227-30. Michail S, Nuta M, Niculescu A. PMID: 4245960.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    60. [Morphology of Auerbach's myenteric plexus of the small intestine of the dog]. Acta Anat (Basel). 1968; 67(3):424-36. Michail S, Karamanlidis A. PMID: 4170586.
      View in: PubMed   Mentions:    Fields:    Translation:AnimalsCells
    61. [Giant orbital cystic teratoma with dental inclusion]. Arch Ophtalmol Rev Gen Ophtalmol. 1961 Oct-Nov; 21:675-85. MICHAIL S. PMID: 14473338.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
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