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S. Weitsman · SciRah

Researcher profile · Semantic Scholar

S. Weitsman

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S. Weitsman — researcher profile on SciRah

h-index: 36
Works: 159
Citations: 5,107

Most-cited papers

Development and Validation of a Biomarker for Diarrhea-Predominant Irritable Bowel Syndrome in Human Subjects
M. Pimentel, Walter Morales, A. Rezaie, E. Marsh +11 more
2015PLoS ONE143 citations Open access
Semantic Scholar
Methanogens and Hydrogen Sulfide Producing Bacteria Guide Distinct Gut Microbe Profiles and Irritable Bowel Syndrome Subtypes
M. Villanueva-Millán, G. Leite, Jia-Jing Wang, Walter Morales +17 more
2022American Journal of Gastroenterology121 citations Open access
Semantic Scholar
Mapping the Segmental Microbiomes in the Human Small Bowel in Comparison with Stool: A REIMAGINE Study
G. Leite, S. Weitsman, G. Parodi, Shreya Celly +11 more
2020Digestive Diseases and Sciences113 citations Open access
Semantic Scholar
Molecular assessment of differences in the duodenal microbiome in subjects with irritable bowel syndrome
E. Giamarellos-Bourboulis, Jie Tang, Emmannouil Pyleris, A. Pistiki +9 more
2015Scandinavian Journal of Gastroenterology97 citations
Semantic Scholar
The duodenal microbiome is altered in small intestinal bacterial overgrowth
G. Leite, Walter Morales, S. Weitsman, Shreya Celly +7 more
2020PLoS ONE93 citations Open access
Semantic Scholar
Autoimmunity Links Vinculin to the Pathophysiology of Chronic Functional Bowel Changes Following Campylobacter jejuni Infection in a Rat Model
M. Pimentel, Walter Morales, Venkata B. Pokkunuri, C. Brikos +10 more
2015Digestive Diseases and Sciences81 citations
Semantic Scholar
Defining Small Intestinal Bacterial Overgrowth by Culture and High Throughput Sequencing.
G. Leite, A. Rezaie, R. Mathur, G. Barlow +9 more
2023Clinical Gastroenterology and Hepatology68 citations Open access
Semantic Scholar
Ultraviolet A light effectively reduces bacteria and viruses including coronavirus
A. Rezaie, G. Leite, G. Melmed, R. Mathur +10 more
2020PLoS ONE62 citations Open access
Semantic Scholar
Assessment of Anti-vinculin and Anti-cytolethal Distending Toxin B Antibodies in Subtypes of Irritable Bowel Syndrome
A. Rezaie, Sung Chul Park, Walter Morales, E. Marsh +6 more
2017Digestive Diseases and Sciences49 citations
Semantic Scholar
Effects of Proton Pump Inhibitors on the Small Bowel and Stool Microbiomes
S. Weitsman, Shreya Celly, G. Leite, R. Mathur +8 more
2021Digestive Diseases and Sciences41 citations
Semantic Scholar
Optimizing microbiome sequencing for small intestinal aspirates: validation of novel techniques through the REIMAGINE study
G. Leite, Walter Morales, S. Weitsman, Shreya Celly +6 more
2019BMC Microbiology41 citations Open access
Semantic Scholar
Metabolic Effects of Eradicating Breath Methane using Antibiotics in Prediabetic Subjects with Obesity
R. Mathur, K. Chua, M. Mamelak, Walter Morales +7 more
2016Obesity38 citations Open access
Semantic Scholar
Acute appendicitis is associated with appendiceal microbiome changes including elevated Campylobacter jejuni levels
S. Oh, Maya L. Pimentel, G. Leite, Shreya Celly +13 more
2020BMJ Open Gastroenterology26 citations Open access
Semantic Scholar
Characterization of the Small Bowel Microbiome Reveals Different Profiles in Human Subjects Who Are Overweight or Have Obesity
G. Leite, G. Barlow, Mohamad Rashid, A. Hosseini +7 more
2024American Journal of Gastroenterology24 citations Open access
Semantic Scholar
Consuming artificial sweeteners may alter the structure and function of duodenal microbial communities
A. Hosseini, G. Barlow, G. Leite, Mohamad Rashid +7 more
2023iScience24 citations Open access
Semantic Scholar
A Smartphone Application Using Artificial Intelligence Is Superior To Subject Self-Reporting When Assessing Stool Form
M. Pimentel, R. Mathur, Jia-Jing Wang, Christine Y. Chang +12 more
2022American Journal of Gastroenterology20 citations
Semantic Scholar
Hydrogen Sulfide Producers Drive a Diarrhea-Like Phenotype and a Methane Producer Drives a Constipation-Like Phenotype in Animal Models
M. Villanueva-Millán, G. Leite, Walter Morales, M. Sanchez +9 more
2023Digestive Diseases and Sciences17 citations Open access
Semantic Scholar
The Response of the Rodent Gut Microbiome to Broad-Spectrum Antibiotics Is Different in Males and Females
G. Parodi, G. Leite, Maya L. Pimentel, G. Barlow +5 more
2022Frontiers in Microbiology17 citations Open access
Semantic Scholar
Immunization with cytolethal distending toxin B produces autoantibodies to vinculin and small bowel bacterial changes in a rat model of postinfectious irritable bowel syndrome
Walter Morales, K. Triantafyllou, G. Parodi, S. Weitsman +5 more
2020Neurogastroenterology and Motility16 citations
Semantic Scholar
Effect, tolerability, and safety of exclusive palatable elemental diet in patients with intestinal microbial overgrowth.
Ali Rezaie, Bianca W. Chang, Juliana de Freitas Germano, G. Leite +15 more
2025Clinical Gastroenterology and Hepatology15 citations Open access
Semantic Scholar
Cytolethal distending toxin B inoculation leads to distinct gut microtypes and IBS-D-like microRNA-mediated gene expression changes in a rodent model
G. Leite, Juliana de Freitas Germano, Walter Morales, S. Weitsman +9 more
2023Gut microbes15 citations Open access
Semantic Scholar
Hydrogen Sulfide and Methane on Breath Test Correlate with Human Small Intestinal Hydrogen Sulfide Producers and Methanogens
M. Villanueva-Millán, G. Leite, R. Mathur, Ali Rezaie +12 more
2025Digestive Diseases and Sciences13 citations Open access
Semantic Scholar
4 – First Large Scale Study Defining the Characteristic Microbiome Signatures of Small Intestinal Bacterial Overgrowth (SIBO): Detailed Analysis from the Reimagine Study
G. Leite, M. Villanueva-Millán, Shreya Celly, Rashin Sedighi +10 more
2019Gastroenterology6 citations Open access
Semantic Scholar
Sa1911 – Analysis of the Small Intestinal Microbiome Reveals Marked Differences from Stool Microbiome in a Large Scale Human Cohort: Redefining the “Gut Microbiome”
G. Leite, S. Weitsman, Shreya Celly, Walter Morales +11 more
2019Gastroenterology5 citations Open access
Semantic Scholar
Lovastatin Lactone Inhibits Methane Production in Human Stool Homogenates: 1771
E. Marsh, Walter Morales, K. Chua, Z. Marsh +4 more
20155 citations
Semantic Scholar
Low dose rifaximin combined with N-acetylcysteine is superior to rifaximin alone in a rat model of IBS-D: a randomized trial
G. Leite, A. Rezaie, Walter Morales, S. Weitsman +9 more
2024Scientific Reports4 citations Open access
Semantic Scholar
Coronavirus Disease 2019 (COVID-19) Pandemic Lifestyle Changes May Have Influenced Small Bowel Microbial Composition and Microbial Resistance
A. Hosseini, Mohamad Rashid, G. Leite, G. Barlow +8 more
2023Digestive Diseases and Sciences4 citations Open access
Semantic Scholar
Transcriptomics profiles in intestinal sulfide overproduction, small intestinal bacterial overgrowth, and intestinal methanogen overgrowth
Juliana de Freitas Germano, G. Leite, M. Villanueva-Millán, Daniel Brimberry +17 more
2026mSystems1 citations Open access
Semantic Scholar
Prevalence of Small Intestinal Bacterial Overgrowth Syndrome in Patients with Non-Alcoholic Fatty Liver Disease/Non-Alcoholic Steatohepatitis: A Cross-Sectional Study
P. Gkolfakis, G. Tziatzios, G. Leite, Ioannis S. Papanikolaou +10 more
2023Microorganisms1 citations Open access
Semantic Scholar
ODP630 Antibiotics Transiently Reduce Circulating Cortisol and Inflammatory Biomarker Levels in Healthy Sprague Dawley Rats
G. Barlow, Alyson Fiorentino, G. Leite, Walter Morales +7 more
2022Journal of the Endocrine Society1 citations Open access
Semantic Scholar
169: EXAMINING THE ROLE OF SULFATE REDUCING BACTERIA AND METHANOGENS ON MICROBIOME, SYMPTOMS, AND BREATH TESTING IN IBS-D AND IBS-C
M. Villanueva-Millán, G. Leite, Walter Morales, Christine Y. Chang +16 more
2022Gastroenterology1 citations
Semantic Scholar
Su544 SMOKING CHANGES THE SMALL BOWEL MICROBIOME BUT APPEARS REVERSIBLE WITH SMOKING CESSATION COMPARED TO CONTROL SUBJECTS: RESULTS FROM THE REIMAGINE STUDY
A. Hosseini, Christine Y. Chang, G. Leite, Jia-Jing Wang +9 more
20211 citations
Semantic Scholar
S1308 Mucolytic Treatment of Small Bowel Aspirates Improves Symptom Correlation and Identification of Small Intestinal Bacterial Overgrowth Based on Culture and 16S rRNA Gene Sequencing
Q. Cao, G. Leite, Walter Morales, Shreya Celly +3 more
20201 citations
Semantic Scholar
Sa1909 – Deep Sequencing of the Entire Human Small Intestine: A Comparison to Stool Microbiome in the Reimagine Study
M. Villanueva-Millán, M. Pimentel, S. Weitsman, Shreya Celly +11 more
2019Gastroenterology1 citations Open access
Semantic Scholar
979 – A Large Scale Evaluation of the Small Intestinal Microbiome in Subjects on Proton Pump Inhibitors
S. Weitsman, G. Leite, Shreya Celly, Walter Morales +8 more
2019Gastroenterology1 citations Open access
Semantic Scholar
Sa1680 – Second Generation Anti-Cdtb and Anti-Vinculin Testing Produces Greater Diagnostic Accuracy for Ibs-D Compared to Ibd
Walter Morales, A. Rezaie, S. Weitsman, G. Barlow +1 more
2019Gastroenterology1 citations Open access
Semantic Scholar
Su1949 – Small Intestinal Aspirates Require Specific Treatment to Optimize Microbial Analysis: Validation of a Novel Technique from the Reimagine Study
Shreya Celly, Walter Morales, S. Weitsman, G. Parodi +4 more
2019Gastroenterology1 citations
Semantic Scholar
Sa1912 – Revealing the Entire Intestinal Microbiota and Its Associations to the Genetic, Immunologic, and Neuroendocrine Ecosystems: Methodology for the Reimagine Study
Rashin Sedighi, R. Mathur, Shreya Celly, Christine Y. Chang +9 more
2019Gastroenterology1 citations Open access
Semantic Scholar
Sa1216 - The Convergence of Bacterial Overgrowth, Systemic Inflammatory Biomarkers, and Anti-Vinculin Antibodies in Determining the Response to Rifaximin Treatment in Diarrhea-Predominant Ibs (D-Ibs) Subjects
G. Leite, Walter Morales, S. Weitsman, Shreya Celly +6 more
20181 citations
Semantic Scholar
Cytolethal Distending Toxin B (CdtB) Exposure Alone is Sufficient to Precipitate Autoimmunity and Changes to the Small Intestinal Microbiome in a Rat Model of Post-Infectious IBS
G. Parodi, Walter Morales, Sung Chul Park, S. Weitsman +5 more
20171 citations
Semantic Scholar
Mo1314 Effect of Rifaximin Treatment on Anti-Vinculin Antibodies in IBS With Diarrhea
Walter Morales, E. Marsh, K. Chua, Sung Chul Park +3 more
20161 citations
Semantic Scholar
Mo2051 Lovastatin Improves Stool Form in Methanobrevibacter Smithii Colonized Rats With Constipation
Walter Morales, E. Marsh, Allen Yu, Z. Marsh +6 more
20151 citations
Semantic Scholar
The Effect of Dried Plum on Targeted Gut Flora and Host Gene Expression in a Rat Model of Post-infectious IBS: 1815
Seong-eun Kim, S. M. Kim, Allen Yu, Z. Marsh +6 more
20141 citations
Semantic Scholar
Duodenal microbiome profiles exhibit sex-specific differences
Mohamad Rashid, G. Leite, G. Barlow, A. Hosseini +11 more
2026iScience0 citations Open access
Semantic Scholar
782: REDUCTION OF BREATH METHANE LEVELS CORRELATES WITH FECAL ABUNDANCE OF METHANOBREVIBACTER SMITHII FOLLOWING TWOWEEKS OF EXCLUSIVE ORAL ELEMENTAL DIET: A PROSPECTIVE CLINICAL TRIAL
Juliana de Freitas Germano, G. Leite, Daniel Brimberry, Mohamad Rashid +14 more
2025Gastroenterology0 citations
Semantic Scholar
Sa1192: SMALL BOWEL TRANSCRIPTOMICS REVEALS SHARED PROTEOLYTIC DYSREGULATION AND DISTINCT GENE PROFILES IN SMALL INTESTINAL BACTERIAL OVERGROWTH (SIBO) AND INTESTINAL METHANOGEN OVERGROWTH (IMO)
Juliana de Freitas Germano, G. Leite, Said Bogatyrev, Daniel Brimberry +12 more
2025Gastroenterology0 citations
Semantic Scholar
OR06-05 Patients with Hypothyroidism Have a Higher Prevalence of Small Intestinal Bacterial Overgrowth Based on Duodenal Culture, with a Unique Microbial Profile
Margaret Wei, G. Leite, G. Barlow, A. Hosseini +9 more
2025Journal of the Endocrine Society0 citations Open access
Semantic Scholar
Su2010: A NOVEL MICROBIOME THERAPY, CS-06 (METHYLENETETRAHYDROMETHANOPTERIN DEHYDROGENASE [MTD] BLOCKER), REDUCES METHANE PRODUCTION IN STOOL CULTURE AND IMPROVES THE PHENOTYPE IN A RAT MODEL OF CONSTIPATION
M. Villanueva-Millán, G. Leite, I. Rivera, Angel Trujillo +11 more
2025Gastroenterology0 citations
Semantic Scholar
1024: SMALL BOWEL TRANSCRIPTOMICS REVEALS MITOCHONDRIAL PATHWAYS AND REDOX GENES AS KEY PLAYERS IN INTESTINAL SULFIDE OVERPRODUCTION (ISO)
Juliana de Freitas Germano, G. Leite, Said Bogatyrev, Daniel Brimberry +12 more
2025Gastroenterology0 citations
Semantic Scholar
894: LOW- AND HIGH-DOSE RIFAXIMIN VERSUS LOW-DOSE RIFAXIMIN COMBINED WITH N-ACETYLCYSTEINE FOR TREATING DIARRHEA-PREDOMINANT IRRITABLE BOWEL SYNDROME: A DOUBLE-BLIND, RANDOMIZED PROOF-OF-CONCEPT TRIAL
M. Pimentel, R. Mathur, G. Leite, Bianca W. Chang +13 more
2025Gastroenterology0 citations
Semantic Scholar

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A. Rezaie — researcher profile on SciRah

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