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Sonia K. Ramsy, MD
Professor of Clinical Pediatrics
CHL Mail Stop 78 Off Campus Los Angeles
+1 323 361 5924


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.


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. View in: PubMed

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. View in: PubMed

Genetic variants associated with Crohn's disease. Appl Clin Genet. 2013; 6:25-32. View in: PubMed

Quantitative profiling of gut microbiota of children with diarrhea-predominant irritable bowel syndrome. Am J Gastroenterol. 2012 Nov; 107(11):1740-51. View in: PubMed

Alterations in the gut microbiome of children with severe ulcerative colitis. Inflamm Bowel Dis. 2012 Oct; 18(10):1799-808. View in: PubMed

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. View in: PubMed

Advances in inflammatory bowel diseases in children. Minerva Pediatr. 2012 Jun; 64(3):257-70. View in: PubMed

End-stage renal disease due to hydronephrosis in a patient with artificial urinary sphincter. Int J Artif Organs. 2011 Nov; 34(11):1106-8. View in: PubMed

Distal gut microbiota of adolescent children is different from that of adults. FEMS Microbiol Ecol. 2011 Aug; 77(2):404-12. View in: PubMed

Acute kidney injury due to rhabdomyolysis in narcotic drug users. Int J Artif Organs. 2011 Jul; 34(7):584-8. View in: PubMed

Outcome following thiopurine use in children with ulcerative colitis: a prospective multicenter registry study. Am J Gastroenterol. 2011 May; 106(5):981-7. View in: PubMed

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. View in: PubMed

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. View in: PubMed

Disseminated histoplasmosis and pneumocystis pneumonia in a child with Crohn disease receiving infliximab. J Pediatr Gastroenterol Nutr. 2010 Aug; 51(2):221-2. View in: PubMed

Lethal Strongyloides stercoralis superinfection in an immunocompromised patient. Ren Fail. 2010 Jul; 32(6):750-2. View in: PubMed

Comparison of immunosuppressive therapeutic regimens in patients with nephrotic syndrome due to idiopathic membranous nephropathy. Ren Fail. 2010 Jun; 32(5):566-71. View in: PubMed

Quantitative evaluation of proteinuria by estimation of the protein/creatinine ratio in a random urine sample. Ren Fail. 2010 Jan; 32(2):153-6. View in: PubMed

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. View in: PubMed

The role of probiotics in allergic diseases. Allergy Asthma Clin Immunol. 2009 Oct 22; 5(1):5. View in: PubMed

High-throughput quantitative analysis of the human intestinal microbiota with a phylogenetic microarray. Appl Environ Microbiol. 2009 Jun; 75(11):3572-9. View in: PubMed

Rapunzel syndrome-a rare cause of multiple jejunal intussusception. South Med J. 2009 Apr; 102(4):416-8. View in: PubMed

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. View in: PubMed

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. View in: PubMed

An unusual cause of postfundoplication vomiting. J Pediatr Surg. 2008 Mar; 43(3):E45-7. View in: PubMed

Gastroesophageal reflux. Pediatr Rev. 2007 Mar; 28(3):101-10. View in: PubMed

The expression of matrix metalloproteinase-11 protein in various types of glomerulonephritis. Nephrol Dial Transplant. 2007 Jan; 22(1):109-17. View in: PubMed

Clinical efficacy of probiotics: review of the evidence with focus on children. J Pediatr Gastroenterol Nutr. 2006 Oct; 43(4):550-7. View in: PubMed

Use of wireless capsule endoscopy in the management of severe Henoch-Schonlein purpura. Pediatrics. 2006 Sep; 118(3):e904-6. View in: PubMed

Early markers of renal dysfunction in patients with sickle cell/beta-thalassemia. Kidney Int. 2006 Jun; 69(11):2037-42. View in: PubMed

Capsule endoscopy in pediatric patients with hamartomatous polyp syndromes. J Pediatr Gastroenterol Nutr. 2006 Feb; 42(2):240-2. View in: PubMed

Urgent superselective segmental renal artery embolization in the treatment of life-threatening renal hemorrhage. Urol Int. 2006; 77(1):34-41. View in: PubMed

Role of selectins in the intestinal epithelial migration of eosinophils. Pediatr Res. 2005 Oct; 58(4):644-7. View in: PubMed

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. View in: PubMed

Polyethylene glycol for constipation in children younger than eighteen months old. J Pediatr Gastroenterol Nutr. 2004 Aug; 39(2):197-9. View in: PubMed

A new model for studying eosinophil migration across cultured intestinal epithelial monolayers. J Pediatr Gastroenterol Nutr. 2004 Jul; 39(1):56-63. View in: PubMed

Thrombotic microangiopathy in a patient with Sezary syndrome treated with interferon-alpha. Nephrol Dial Transplant. 2004 Mar; 19(3):733-5. View in: PubMed

Lactobacillus plantarum inhibits the intestinal epithelial migration of neutrophils induced by enteropathogenic Escherichia coli. J Pediatr Gastroenterol Nutr. 2003 Mar; 36(3):385-91. View in: PubMed

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. View in: PubMed

Relapse of predominant tubulointerstitial lupus nephritis. Lupus. 2003; 12(9):728-9. View in: PubMed

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. View in: PubMed

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. View in: PubMed

Evaluation of E-cadherin/catenin complex in primary and secondary glomerulonephritis. Am J Kidney Dis. 2002 Mar; 39(3):469-74. View in: PubMed

Laparoscopic cholecystectomy: effective treatment for chronic abdominal pain in children with acalculous biliary pain. J Pediatr Surg. 2001 Sep; 36(9):1394-6. View in: PubMed

Probiotics inhibit enteropathogenic E. coli adherence in vitro by inducing intestinal mucin gene expression. Am J Physiol. 1999 Apr; 276(4 Pt 1):G941-50. View in: PubMed

Acute renal failure in an adult patient with Henoch-Schoenlein purpura after episode of macroscopic hematuria. Ren Fail. 1999 Jan; 21(1):107-11. View in: PubMed

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. View in: PubMed

Hyperselective renal artery embolisation in the treatment of post-traumatic iatrogenic haematuria: report of two cases. Int Angiol. 1998 Mar; 17(1):58-61. View in: PubMed

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. View in: PubMed

Acute renal failure associated with immunoglobulin administration. Nephrol Dial Transplant. 1997 Jul; 12(7):1497-9. View in: PubMed

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. View in: PubMed

A case of thyrotoxic hypokalaemic periodic paralysis in a Greek man. Nephrol Dial Transplant. 1996 Aug; 11(8):1634-6. View in: PubMed

Effect of glutamine-supplemented elemental diet on mucosal adaptation following bowel resection in rats. J Pediatr Gastroenterol Nutr. 1995 Nov; 21(4):394-8. View in: PubMed

Septicaemia in chronic renal failure. J Chemother. 1989 Jul; 1(4 Suppl):835-8. View in: PubMed

An unusual source of error. Anesth Analg. 1985 Jun; 64(6):652. View in: PubMed

[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. View in: PubMed

Serological relationships between Pythium irregulare Buisman and certain tomato cultivars. Zentralbl Bakteriol Parasitenkd Infektionskr Hyg. 1974; 129(1):179-82. View in: PubMed

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. View in: PubMed

[Cryotherapy in a case of ocular acne rosacea]. Ann Ocul (Paris). 1970 Jul; 203(7):669-72. View in: PubMed

[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. View in: PubMed

[Morphology of Auerbach's myenteric plexus of the small intestine of the dog]. Acta Anat (Basel). 1968; 67(3):424-36. View in: PubMed

[Giant orbital cystic teratoma with dental inclusion]. Arch Ophtalmol Rev Gen Ophtalmol. 1961 Oct-Nov; 21:675-85. View in: PubMed

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