Academic article

• El-Salhy, Magdhy; Valeur, Jørgen; Brønstad, Ingeborg et al. (2025). Possible Role of Butyric Acid in Long-Term Symptom Relief in Irritable Bowel Syndrome Patients Following Fecal Microbiota Transplantation. (external link)
• El-Salhy, Magdhy; Johansson, Mads; Klevstul, Miriam et al. (2025). Quality of life, functional impairment and healthcare experiences of patients with irritable bowel syndrome in Norway: an online survey. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar (2024). Factors Underlying the Difference in Response to Fecal Microbiota Transplantation Between IBS Patients with Severe and Moderate Symptoms. (external link)
• El-Salhy, Magdhy; Gilja, Odd Helge; Hatlebakk, Jan Gunnar (2024). Factors underlying the long-term efficacy of faecal microbiota transplantation for patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdhy; Gilja, Odd Helge; Hatlebakk, Jan Gunnar (2023). Increasing the transplant dose and repeating faecal microbiota transplantation results in the responses of male patients with IBS reaching those of females. (external link)
• El-Salhy, Magdhy; Gilja, Odd Helge; Hatlebakk, Jan Gunnar (2023). Factors affecting the outcome of fecal microbiota transplantation for patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Hausken, Trygve; El-Salhy, Magdy (2022). Changes in colonic enteroendocrine cells of patients with irritable bowel syndrome following fecal microbiota transplantation. (external link)
• El-Salhy, Magdy; Winkel, Renate; Casén, Christina et al. (2022). Efficacy of fecal microbiota transplantation for patients with irritable bowel syndrome at 3 years after transplantation. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Hausken, Trygve et al. (2022). The fecal microbiota transplantation response differs between patients with severe and moderate irritable bowel symptoms. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Hausken, Trygve et al. (2022). Irritable bowel syndrome patients who are not likely to respond to fecal microbiota transplantation. (external link)
• El-Salhy, Magdy; Casén, Christina; Valeur, Jørgen et al. (2021). Responses to faecal microbiota transplantation in female and male patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy; Lied, Gülen Arslan et al. (2021). The Effects of Fecal Microbiota Transplantation on the Symptoms and the Duodenal Neurogenin 3, Musashi 1, and Enteroendocrine Cells in Patients With Diarrhea-Predominant Irritable Bowel Syndrome. (external link)
• El-Salhy, Magdy; Kristoffersen, Anja Bråthen; Valeur, Jørgen et al. (2021). Long-term effects of fecal microbiota transplantation (FMT) in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Valeur, Jørgen; Hausken, Trygve et al. (2020). Changes in fecal short-chain fatty acids following fecal microbiota transplantation in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hausken, Trygve; Hatlebakk, Jan Gunnar (2020). Density of Musashi‑1‑positive stem cells in the stomach of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Gilja, Odd Helge et al. (2019). Efficacy of faecal microbiota transplantation for patients with irritable bowel syndrome in a randomised, double-blind, placebo-controlled study. (external link)
• Mazzawi, Tarek; Hausken, Trygve; Hov, Johannes Espolin Roksund et al. (2019). Clinical response to fecal microbiota transplantation in patients with diarrhea-predominant irritable bowel syndrome is associated with normalization of fecal microbiota composition and short-chain fatty acid levels. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Hausken, Trygve (2019). Diet in Irritable Bowel Syndrome (IBS): Interaction with Gut Microbiota and Gut Hormones. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Gilja, Odd Helge et al. (2019). Efficacy of faecal microbiota transplantation for patients with irritable bowel syndrome in a randomised, double-blind, placebo-controlled study. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Hatlebakk, Jan Gunnar (2019). Overlapping of irritable bowel syndrome with erosive esophagitis and the performance of Rome criteria in diagnosing IBS in a clinical setting. (external link)
• El-Salhy, Magdy; Hausken, Trygve; Hatlebakk, Jan Gunnar (2019). Increasing the Dose and/or Repeating Faecal Microbiota Transplantation (FMT) Increases the Response in Patients with Irritable Bowel Syndrome (IBS). (external link)
• Mazzawi, Tarek; Lied, Gülen Arslan; Sangnes, Dag André et al. (2018). The kinetics of gut microbial community composition in patients with irritable bowel syndrome following fecal microbiota transplantation. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge (2017). Abnormalities in ileal stem, neurogenin 3, and enteroendocrine cells in patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy (2017). Changes in duodenal enteroendocrine cells in patients with irritable bowel syndrome following dietary guidance. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Hausken, Trygve et al. (2017). Interaction between diet and gastrointestinal endocrine cells. (external link)
• El-Salhy, Magdy; Umezawa, Kazuo; Hatlebakk, Jan Gunnar et al. (2017). Abnormal differentiation of stem cells into enteroendocrine cells in rats with DSS-induced colitis. (external link)
• El-Salhy, Magdy; Patcharatrakul, Tanisa; Hatlebakk, Jan Gunnar et al. (2017). Chromogranin A cell density in the large intestine of Asian and European patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Patcharatrakul, Tanisa; Hatlebakk, Jan Gunnar et al. (2017). Enteroendocrine, Musashi 1 and neurogenin 3 cells in the large intestine of Thai and Norwegian patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Umezawa, Kazuo et al. (2016). Enteroendocrine cells, stem cells and differentiation progenitors in rats with TNBS-induced colitis. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Gilja, Odd Helge (2016). Abnormalities in endocrine and immune cells are correlated in dextran‑sulfate‑sodium‑induced colitis in rats. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy (2016). Changes in small intestinal chromogranin A-immunoreactive cell densities in patients with irritable bowel syndrome after receiving dietary guidance. (external link)
• El-Salhy, Magdy; Umezawa, Kazuo (2016). Effects of AP-1 and NF-κB inhibitors on colonic endocrine cells in rats with TNBS-induced colitis. (external link)
• El-Salhy, Magdy; Umezawa, Kazuo (2016). Anti-inflammatory effects of novel AP-1 and NF-B inhibitors in dextran-sulfate-sodium-induced colitis in rats. (external link)
• El-Salhy, Magdy; Umezawa, Kazuo (2016). Treatment with novel AP-1 and NF-B inhibitors restores the colonic endocrine cells to normal levels in rats with DSS-induced colitis. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy (2016). Dietary guidance and ileal enteroendocrine cells in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hausken, Trygve (2016). The role of the neuropeptide Y (NPY) family in the pathophysiology of inflammatory bowel disease (IBD). (external link)
• Mazzawi, Tarek; Hausken, Trygve; Gundersen, Doris Irene et al. (2016). Dietary guidance normalizes large intestinal endocrine cell densities in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar (2016). Changes in enteroendocrine and immune cells following colitis induction by TNBS in rats. (external link)
• El-Salhy, Magdy (2015). Recent developments in the pathophysiology of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan G; Gilja, Odd Helge et al. (2015). Densities of rectal peptide YY and somatostatin cells as biomarkers for the diagnosis of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene (2015). Diet in irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Hausken, Trygve; Gundersen, Doris Irene et al. (2015). Effect of dietary management on the gastric endocrine cells in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan G; Hausken, Trygve (2015). Reduction in duodenal endocrine cells in irritable bowel syndrome is associated with stem cell abnormalities. (external link)
• Mazzawi, Tarek; Gundersen, Doris Irene; Hausken, Trygve et al. (2015). Increased chromogranin A cell density in the large intestine of patients with irritable bowel syndrome after receiving dietary guidance. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2014). Abnormal rectal endocrine cells in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Umezawa, Kazuo; Gilja, Odd Helge et al. (2014). Amelioration of Severe TNBS Induced Colitis by Novel AP-1 and NF-κB Inhibitors in Rats. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Gundersen, Doris Irene et al. (2014). Endocrine cells in the oxyntic mucosa of the stomach in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Hatlebakk, Jan G et al. (2014). Stomach antral endocrine cells in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Gundersen, Doris Irene et al. (2014). Endocrine cells in the ileum of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Hausken, Trygve (2014). Chromogranin A cells in the stomachs of patients With sporadic irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Gundersen, Doris Irene; Hausken, Trygve et al. (2014). Increased gastric chromogranin A cell density following changes to diets of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Gundersen, Doris Irene et al. (2014). Duodenal Chromogranin A Cell Density as a Biomarker for the Diagnosis of Irritable Bowel Syndrome. (external link)
• Wendelbo, Ingvild Haukaas; Mazzawi, Tarek; El-Salhy, Magdy (2013). Increased serotonin transporter immunoreactivity intensity in the ileum of patients with irritable bowel disease. (external link)
• El-Salhy, Magdy; Wendelbo, Ingvild Haukaas; Gundersen, Doris Irene et al. (2013). Colonoscopy with mucosal biopsies in young rats: A model for experimental gastroenterology. (external link)
• Mazzawi, Tarek; Hausken, Trygve; Gundersen, Doris Irene et al. (2013). Effects of dietary guidance on the symptoms, quality of life and habitual dietary intake of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2013). Low‑grade inflammation in the rectum of patients with sporadic irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Wendelbo, Ingvild Haukaas; Gundersen, Doris Irene (2013). Reduced chromogranin A cell density in the ileum of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Wendelbo, Ingvild Haukaas; Gundersen, Doris Irene (2013). Serotonin and serotonin transporter in the rectum of patients with irritable bowel disease. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Gundersen, Doris Irene et al. (2013). Changes in the symptom pattern and the densities of large-intestinal endocrine cells following Campylobacter infection in irritable bowel syndrome: a case report. (external link)
• El-Salhy, Magdy; Wendelbo, Ingvild Haukaas; Gundersen, Doris Irene et al. (2013). Evaluation of the usefulness of colonoscopy with mucosal biopsies in the follow-up of TNBS-induced colitis in rats. (external link)
• El-Salhy, Magdy; Østgaard, Hege; Gundersen, Doris Irene et al. (2012). The role of diet in the pathogenesis and management of irritable bowel syndrome (Review). (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2012). High densities of serotonin and peptide YY cells in the colon of patients with lymphocytic colitis. (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Gundersen, Doris Irene et al. (2012). Chromogranin A cell density in the rectum of patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2012). Chromogranin A cell density as a diagnostic marker for lymphocytic colitis. (external link)
• Østgaard, Hege; Hausken, Trygve; Gundersen, Doris Irene et al. (2012). Diet and effects of diet management on quality of life and symptoms in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Seim, Inge; Chopin, Lisa et al. (2012). Irritable bowel syndrome: the role of gut neuroendocrine peptides. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Østgaard, Hege et al. (2012). Low Densities of Serotonin and Peptide YY Cells in the Colon of Patients with Irritable Bowel Syndrome. (external link)
• El-Salhy, Magdy (2012). Irritable bowel syndrome: Diagnosis and pathogenesis. (external link)
• El-Salhy, Magdy; Halwe, Jörg Michael; Lomholt-Beck, Bjarne et al. (2011). The prevalence of inflammatory bowel diseases, microscopic colitis, and colorectal cancer in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Lomholt-Beck, Bjarne; Gundersen, Doris Irene (2011). The prevalence of celiac disease in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Lomholt-Beck, Bjarne; Gundersen, TD (2011). High chromogranin A cell density in the colon of patients with lymphocytic colitis. (external link)
• Dizdar, Vernesa; Spiller, Robin; Singh, Gulzar et al. (2010). Relative importance of abnormalities of CCK and 5-HT (serotonin) in Giardia-induced post-infectious irritable bowel syndrome and functional dyspepsia. (external link)
• El-Salhy, Magdy; Lillebø, Elli; Reinemo, Astrid et al. (2010). Effects of a health program comprising reassurance, diet management, probiotics administration and regular exercise on symptoms and quality of life in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Lomholt-Beck, Bjarne; Hausken, Trygve (2010). Chromogranin A as a possible tool in the diagnosis of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Vaali, Kirsi Kaarina; Dizdar, Vernesa et al. (2010). Abnormal small-intestinal endocrine cells in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Rauma, Jussi (2009). Low density of ghrelin cells in the oxyntic mucosa correlated to slow gastric emptying in patients with type 1 diabetes. (external link)
• El-Salhy, Magdy; Lillebø, Eli; Reinemo, Astrid et al. (2009). Ghrelin in patients with irritable bowel syndrome. (external link)
• El-Salhy, Magdy (2009). Ghrelin in gastrointestinal diseases and disorders: A possible role in the pathophysiology and clinical implications (Review). (external link)

Academic lecture

• Sangnes, Dag André; Engjom, Trond; Løvaas, Kristian et al. (2023). Epidemiologi og patofysiologi ved diabetisk diaré (DIAREPA). (external link)
• El-Salhy, Magdy; Kristoffersen, Anja Bråthen; Valeur, Jørgen et al. (2020). Long-term effects of faecal microbiota transplantation (FMT) in patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Hausken, Trygve; Hov, Johannes Espolin Roksund et al. (2019). Effect of faecal microbiota transplantation on gut microenvironment and symptoms in patients with irritable bowel syndrome. (external link)

Academic literature review

• El-Salhy, Magdhy (2023). Intestinal bacteria associated with irritable bowel syndrome and chronic fatigue. (external link)
• El-Salhy, Magdy; Hausken, Trygve; Hatlebakk, Jan Gunnar (2021). Current status of fecal microbiota transplantation for irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Patcharatrakul, Tanisa; Gonlachanvit, Sutep (2021). The role of diet in the pathophysiology and management of irritable bowel syndrome. (external link)
• Ma, Jun; Zhang, Yuyang; Sugai, Takeshi et al. (2021). Inhibition of cellular and animal inflammatory disease models by nf-κb inhibitor dhmeq. (external link)
• El-Salhy, Magdy (2020). Possible role of intestinal stem cells in the pathophysiology of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Hausken, Trygve (2019). Possible role of peptide YY (PYY) in the pathophysiology of irritable bowel syndrome (IBS). (external link)
• El-Salhy, Magdy; Mazzawi, Tarek (2018). Fecal microbiota transplantation for managing irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Ystad, Synne Otteraaen; Mazzawi, Tarek et al. (2017). Dietary fiber in irritable bowel syndrome (Review). (external link)
• El-Salhy, Magdy; Tefera, Solomon; Hausken, Trygve et al. (2017). Gastrointestinal neuroendocrine peptides/amines in inflammatory bowel Disease. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy (2017). Effect of diet and individual dietary guidance on gastrointestinal endocrine cells in patients with irritable bowel syndrome (Review). (external link)
• El-Salhy, Magdy; Hausken, Trygve; Gilja, Odd Helge et al. (2016). The possible role of gastrointestinal endocrine cells in the pathophysiology of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Hatlebakk, Jan Gunnar; Gilja, Odd Helge et al. (2015). The relation between celiac disease, nonceliac gluten sensitivity and irritable bowel syndrome. (external link)
• El-Salhy, Magdy (2015). Recent advances in the diagnosis of irritable bowel syndrome. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Gilja, Odd Helge et al. (2014). Is irritable bowel syndrome an organic disorder?. (external link)
• El-Salhy, Magdy; Svensen, Rune; Hatlebakk, Jan G et al. (2014). Chronic constipation and treatment options (Review). (external link)
• El-Salhy, Magdy; Gilja, Odd Helge; Gundersen, Doris Irene et al. (2014). Interaction between ingested nutrients and gut endocrine cells in patients with irritable bowel syndrome (Review). (external link)
• El-Salhy, Magdy; Hatlebakk, Jan G; Gilja, Odd Helge et al. (2014). Irritable bowel syndrome: recent developments in diagnosis, pathophysiology, and treatment. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2013). Clinical presentation, diagnosis, pathogenesis and treatment options for lymphocytic colitis (Review). (external link)
• El-Salhy, Magdy; Mazzawi, Tarek; Gundersen, Doris Irene et al. (2013). The role of peptide YY in gastrointestinal diseases and disorders (Review). (external link)
• Seim, Inge; El-Salhy, Magdy; Hausken, Trygve et al. (2012). Ghrelin and the brain-gut axis as a pharmacological target for appetite control. (external link)
• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2012). Irritable bowel syndrome: treatment options. (external link)

Reader opinion piece

• El-Salhy, Magdhy; Gilja, Odd Helge; Hatlebakk, Jan Gunnar (2023). Letter: A step forward towards a standard FMT protocol for IBS. (external link)
• El-Salhy, Magdy (2021). FMT in IBS: How cautious should we be?. (external link)
• El-Salhy, Magdy; Hausken, Trygve; Hatlebakk, Jan Gunnar (2020). Letter: faecal microbiota transplantation for irritable bowel syndrome—which improvements are required?. (external link)

Poster

• El-Salhy, Magdy; Casén, Christina; Valeur, Jørgen et al. (2021). Responses to faecal microbiota transplantation in female and male patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Lied, Gülen Arslan; Hov, Johannes Espolin Roksund et al. (2018). Effects of faecal microbiota transplantation on gut microenvironment and symptoms in patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; El-Salhy, Magdy; Lied, Gülen Arslan et al. (2017). Effect of faecal microbiota transplantation on Neurogenin 3, Musahsi 1 and enteroendocrine cells in the duodenum of patients with irritable bowel syndrome. (external link)
• Mazzawi, Tarek; Valeur, Jørgen; Hausken, Trygve et al. (2017). Effect of faecal microbiota transplantation on gut bacterial fermentation products in patients with irritable bowel syndrome. (external link)

Editorial

• El-Salhy, Magdy (2019). Nutritional management of gastrointestinal diseases and disorders. (external link)
• El-Salhy, Magdy (2016). Diet in the pathophysiology and management of irritable bowel syndrome. (external link)

Interview

• Spilde, Ingrid; El-Salhy, Magdy; Midtvedt, Tore et al. (2016). Irritabel tarm – fra psykisk til fysisk. (external link)

Lecture

• Mazzawi, Tarek; Lied, Gülen Arslan; El-Salhy, Magdy et al. (2016). Kinetics of microbial community composition in patients with diarrhea-predominant irritable bowel syndrome following faecal microbiota transplantation. (external link)

Doctoral dissertation

• Mazzawi, Tarek; El-Salhy, Magdy (2015). The Role of Diet in Irritable Bowel Syndrome with special reference to Gut Neuroendocrine System. (external link)

Academic monograph

• El-Salhy, Magdy; Hatlebakk, Jan G; Hausken, Trygve (2015). Understanding and Controlling the Irritable Bowel. (external link)

Academic chapter/article/Conference paper

• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2013). Diet and Irritable Bowel Syndrome, with a Focus on Appetite-Regulating Gut Hormones. (external link)

Non-fiction book

• El-Salhy, Magdy; Gundersen, Doris Irene; Hatlebakk, Jan G et al. (2012). Irritable Bowel Syndrome: Diagnosis, Pathogenesis and Treatment Options. (external link)

See a complete overview of publications in Cristin.