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Curtin BF, Hill KL, Bhattacharya S, Powers A, Venkatesan A, Bagi P, Joyal E, Alimchandani M, Goldbach-Mansky R, Grayson P, Quezado M, Sibley C, Heller T. Clinical, Endoscopic, and Histopathologic Gastrointestinal Disease in an American Cohort With Behçet's Disease. Clin Transl Gastroenterol 2023; 14:e00591. [PMID: 37114910 PMCID: PMC10461961 DOI: 10.14309/ctg.0000000000000591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
INTRODUCTION Behçet's disease (BD) is a chronic systemic vasculitis characterized by oral and genital ulcers, uveitis, and skin lesions. Patients with BD may develop gastrointestinal (GI) disease; however, characterization of GI disease in American cohorts is lacking. In this article, we present clinical, endoscopic, and histopathologic GI findings in an American cohort of patients with BD. METHODS Patients with established BD were evaluated prospectively at the National Institutes of Health. Demographic and clinical data were collected including BD manifestations and GI symptoms. Endoscopy with histopathologic sampling was performed for both clinical and research indications with written consent. RESULTS Eighty-three patients were evaluated. The majority were female (83.1%) and white (75.9%). Mean age was 36 ± 14.8 years. GI symptoms were reported in 75% of cohort with nearly half of reporting abdominal pain (48.2%) and significant numbers reporting acid reflux, diarrhea, and nausea/vomiting. Esophagogastroduodenoscopy was performed in 37 patients; erythema and ulcers were the most common found abnormalities. Colonoscopy was performed in 32 patients with abnormalities including polyps, erythema, and ulcers. Endoscopy was normal in 27% of esophagogastroduodenoscopies and 47% of colonoscopies. Vascular congestion was demonstrated on the majority of random biopsies throughout the GI tract. Inflammation was not highly prevalent on random biopsies except in the stomach. Wireless capsule endoscopy was performed on 18 patients; ulcers and strictures were the most common abnormalities. DISCUSSION GI symptoms were common in this cohort of American patients with BD. Endoscopic examination was often normal; however, histopathologic examination demonstrated vascular congestion throughout the GI tract.
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Affiliation(s)
- Bryan F. Curtin
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Kareen L. Hill
- Translational Hepatology Section, Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Sumona Bhattacharya
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Astin Powers
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Aradhana Venkatesan
- Radiology and Imaging Sciences Department, Clinical Center, National Institutes of Health, Bethesda, Maryland, USA
| | - Preet Bagi
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Elizabeth Joyal
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Meghna Alimchandani
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Raphaela Goldbach-Mansky
- Translational Autoinflammatory Diseases AU2 Section, National Institute of Arthritis andMusculoskeletal and Skin Diseases and National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Peter Grayson
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Martha Quezado
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Cailin Sibley
- Translational Autoinflammatory Diseases AU2 Section, National Institute of Arthritis andMusculoskeletal and Skin Diseases and National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, USA
| | - Theo Heller
- Translational Hepatology Section, Liver Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
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Passi M, Gamble LA, Samaranayake SG, Schueler SA, Curtin BF, Fasaye GA, Bowden C, Gurram S, Quezado M, Miettinen M, Koh C, Heller T, Davis JL. Association of CDH1 Germline Variants and Colon Polyp Phenotypes in Patients with Hereditary Diffuse Gastric Cancer. Gastro Hep Adv 2023; 2:244-251. [PMID: 36776716 PMCID: PMC9913407 DOI: 10.1016/j.gastha.2022.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Background and Aims Germline CDH1 variants resulting in E-cadherin loss of function result in an increased risk of diffuse type gastric cancer and lobular type breast cancer. However, the risk of developing other epithelial neoplasms, specifically colorectal cancer, is unknown. Methods Patients enrolled in a prospective natural history study of hereditary gastric cancer who underwent at least one colonoscopy were evaluated. Results Out of 300 patients with CDH1 pathogenic or likely pathogenic variants, 85 underwent colonoscopy. More than half of patients (56%, 48/85) had at least one colorectal polyp. Most of those patients (83%, 40/48) had at least one precancerous polyp (adenoma or sessile serrated lesion). More than half (56%) of patients younger than age 45 had a colorectal polyp. Of those with polyps, the most frequent CDH1 variant type was canonical splice site (27%, 13/48) followed by nonsense (21%, 10/48). There was no association between CDH1 variant type and increased likelihood of colorectal polyps. Conclusions In summary, a majority of CDH1 variant carriers who underwent colonoscopy had colorectal polyps detected, and most subjects were less than 45 years old. This study of colorectal cancer risk based on the prevalence of colorectal polyps in the CDH1 population requires further investigation to appropriately counsel patients on colorectal cancer screening. Clinical trial registry website: https://clinicaltrials.gov/. Clinical trial number: NCT03030404.
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Affiliation(s)
- Monica Passi
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Lauren A. Gamble
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Sarah G. Samaranayake
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Samuel A. Schueler
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Bryan F. Curtin
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Grace-Ann Fasaye
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Cassidy Bowden
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Sandeep Gurram
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Martha Quezado
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health
| | - Markku Miettinen
- Laboratory of Pathology, National Cancer Institute, National Institutes of Health
| | - Christopher Koh
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Theo Heller
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health
| | - Jeremy L. Davis
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health
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Baker JR, Curtin BF, Moshiree B, Rao SSC. Organizing and Developing a GI Motility Lab in Community Practice: Challenges and Rewards. Curr Gastroenterol Rep 2022; 24:73-87. [PMID: 35674875 DOI: 10.1007/s11894-022-00838-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Neurogastroenterology and motility is a rapidly evolving subspecialty that encompasses over 33% of gastroenterological disorders, and up to 50% of referrals to gastroenterology practice. It includes common problems such as dysphagia, gastroesophageal reflux disease, irritable bowel syndrome, chronic constipation, gastroparesis, functional dyspepsia, gas/bloating, small intestinal bacterial overgrowth, food intolerance and fecal incontinence Standard diagnostic tests such as endoscopy or imaging are normal in these conditions. To define the underlying mechanism(s)/etiology of these disorders, diagnostic motility tests are often required. These are best performed by well-trained personnel in a dedicated motility laboratory. Our purpose is to provide an up-to-date overview on how to organize and develop a motility laboratory based on our collective experiences in setting up such facilities in academia and community practice. RECENT FINDINGS A lack of knowledge, training and facilities for providing diagnostic motility tests has led to suboptimal patient care. A motility laboratory is the hub for diagnostic and therapeutic motility procedures. Common procedures include esophageal function tests such as esophageal manometry and pH monitoring, anorectal function tests suchlike anorectal manometry, neurophysiology and balloon expulsion, dysbiosis and food intolerance tests such as hydrogen/methane breath tests, and gastrointestinal transit assessment. These tests provide an accurate diagnosis and guide clinical management including use of medications, biofeedback therapy, neuromodulation, behavioral therapies, evidence-based dietary interventions and endoscopic or surgical procedures. Further, there have been recent developments in billing and coding of motility procedures and training requirements that are not well known. This review provides a stepwise approach on how to set-up a motility laboratory in the community or academic practice and includes the rationale, infrastructure, staffing needs, commonly performed motility tests and their clinical utility, billing and coding strategies, training needs and economic considerations for setting up this service.
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Affiliation(s)
- Jason R Baker
- Atrium Health, Charlotte, NC, USA.,Neurogastroenterology and Motility Laboratory, 1025 Morehead Medical Drive, Suite 300, Charlotte, NC, 28209, USA
| | - Bryan F Curtin
- Division of Neurogastroenterology, The Institute for Digestive and Liver Disease, Mercy Medical Center, Baltimore, MD, USA
| | | | - Satish S C Rao
- Division of Neurogastroenterology/Motility, Augusta University Medical Center, Augusta, GA, USA.
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Schueler SA, Gamble LA, Curtin BF, Ruff SM, Connolly M, Hannah C, Quezado M, Miettinen M, George M, Blakely AM, Hernandez JM, Heller T, Koh C, Davis JL. Evaluation of confocal laser endomicroscopy for detection of occult gastric carcinoma in CDH1 variant carriers. J Gastrointest Oncol 2021; 12:216-225. [PMID: 34012620 DOI: 10.21037/jgo-20-430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background Hereditary diffuse gastric cancer syndrome, attributed to inactivating germline CDH1 variants, is associated with an elevated lifetime risk of gastric cancer. We sought to evaluate cancer detection using probe-based confocal laser endomicroscopy (pCLE) during endoscopic surveillance. Methods A prospective, single-institution study was conducted in asymptomatic adults with pathogenic or likely pathogenic (P/LP) CDH1 variants. Subjects received endoscopic gastric surveillance using pCLE in conjunction with the Cambridge method (CM). Abnormalities visualized by pCLE were biopsied, followed by non-targeted mucosal biopsies according to the CM. Primary endpoint was to determine pCLE sensitivity for detection of occult SRC carcinoma compared to CM. Results Thirty-six patients with P/LP CDH1 variants underwent endoscopy using pCLE and CM. Majority were female (75%) with median age 47 years. Targeted biopsies of focal abnormalities on WLE were negative for carcinoma. Overall, 19.4% (7/36) patients had SRC detected on ≥1 biopsy. Non-targeted CM biopsies revealed SRC in 11.1% (4/36), whereas pCLE revealed SRC in 16.7% (6/36). Fifteen patients underwent total gastrectomy; all 15 explants contained occult carcinoma. In those 15 patients, the false-negative SRC detection rates for pCLE and CM were 67% and 87%, respectively. Conclusions Confocal endomicroscopy alone has low sensitivity for occult cancer detection in CDH1 variant carriers, although it appeared no worse than the current recommended method and required fewer biopsies per patient. A more reliable endoscopic surveillance is needed as a viable alternative to surgery in this high-risk population (ClinicalTrials.gov, Number: NCT03648879).
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Affiliation(s)
- Samuel A Schueler
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Lauren A Gamble
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Bryan F Curtin
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Samantha M Ruff
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maureen Connolly
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Cathleen Hannah
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Martha Quezado
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Markku Miettinen
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Maureen George
- Clinical Center Nursing Department, National Institutes of Health, Bethesda, MD, USA
| | - Andrew M Blakely
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jonathan M Hernandez
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Theo Heller
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Christopher Koh
- Digestive Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Jeremy L Davis
- Surgical Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Kantsevoy SV, Curtin BF. Double pyloromyotomy shows promise in gastric peroral endoscopic myotomy, but important questions remain. Gastrointest Endosc 2020; 92:610-612. [PMID: 32838909 DOI: 10.1016/j.gie.2020.05.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 05/26/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Sergey V Kantsevoy
- Institute for Digestive Health and Liver Diseases, Mercy Medical Center, Baltimore, Maryland, USA; University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Bryan F Curtin
- Institute for Digestive Health and Liver Diseases, Mercy Medical Center, Baltimore, Maryland, USA
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6
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Kuang FL, Curtin BF, Alao H, Piligian B, Berry A, Holland-Thomas N, Powers A, Quezado M, Lumbard K, Fay MP, Klion AD, Kumar S, Khoury P. Single-Organ and Multisystem Hypereosinophilic Syndrome Patients with Gastrointestinal Manifestations Share Common Characteristics. J Allergy Clin Immunol Pract 2020; 8:2718-2726.e2. [PMID: 32344186 DOI: 10.1016/j.jaip.2020.04.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/05/2020] [Accepted: 04/06/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Eosinophilic gastrointestinal diseases (EGIDs) are defined by marked eosinophilia in the gastrointestinal (GI) tract resulting in a wide variety of GI symptoms. When accompanied by blood hypereosinophilia (HE; absolute eosinophil count ≥1500/mm3), EGID can occur as an isolated GI disorder (hypereosinophilic syndrome [HES]/EGID overlap) or as part of a multisystem hypereosinophilic syndrome (Multisystem HES). OBJECTIVE To describe the GI disease of patients categorized as those with HES/EGID overlap versus those with Multisystem HES. METHODS Consecutively enrolled patients on a natural history protocol to study eosinophilia with biopsy-proven EGID involving the esophagus, stomach, small-bowel, and/or colon were evaluated for clinical, histopathologic, and endoscopic features by retrospective chart review. RESULTS Among the 56 patients with EGID and HE, 34 were categorized as HES/EGID overlap and 22 as Multisystem HES. Demographics, GI symptoms, and associated comorbidities were similar between the 2 groups. Multisegment GI eosinophilia was present in 20 of 30 (67%) patients who underwent tissue sampling of all 4 GI segments. Tissue eosinophilia in all 4 GI segments was found in 5 of 30 (17%) patients. Dietary therapy was more common in patients with HES/EGID overlap (65% vs 23%, P = .0028). Patients with Multisystem HES were more likely to receive glucocorticoids (100% vs 79%, P = .0349) and nonglucocorticoid systemic therapies (77% vs 38%, P = .0061). One-third (8 of 22) of patients with Multisystem HES presented with isolated GI symptoms before developing extraintestinal manifestations at a median of 1 year (range, 0.25-15 years). CONCLUSION There are striking clinical similarities between patients with Multisystem HES and those with HES/EGID overlap, despite differing treatment approaches. Moreover, Multisystem HES can present with isolated GI involvement. Larger prospective studies are needed to confirm these findings.
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Affiliation(s)
- Fei Li Kuang
- Laboratory of Parasitic Diseases, NIAID, Bethesda, Md; Division of Allergy and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Ill.
| | - Bryan F Curtin
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, Md
| | - Hawwa Alao
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, Md
| | | | - Alexis Berry
- Laboratory of Parasitic Diseases, NIAID, Bethesda, Md
| | | | - Astin Powers
- Laboratory of Pathology, NCI, National Institutes of Health, Bethesda, Md
| | - Martha Quezado
- Laboratory of Pathology, NCI, National Institutes of Health, Bethesda, Md
| | - Keith Lumbard
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Md
| | - Michael P Fay
- Biostatistical Research Branch, NIAID, National Institutes of Health, Bethesda, Md
| | - Amy D Klion
- Laboratory of Parasitic Diseases, NIAID, Bethesda, Md
| | - Sheila Kumar
- Digestive Diseases Branch, NIDDK, National Institutes of Health, Bethesda, Md
| | - Paneez Khoury
- Laboratory of Parasitic Diseases, NIAID, Bethesda, Md
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Shah K, Curtin BF, Chu C, Hwang D, Flasar MH, von Rosenvinge E. Characteristics of Clostridium difficile infection in patients hospitalized with myelodysplastic syndrome or acute myelogenous leukemia. World J Clin Oncol 2017; 8:398-404. [PMID: 29067276 PMCID: PMC5638715 DOI: 10.5306/wjco.v8.i5.398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 06/07/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate factors associated with Clostridium difficile infection (CDI) and outcomes of CDI in the myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML) population.
METHODS After IRB approval, all MDS/AML patients hospitalized at the University of Maryland Greenebaum Comprehensive Cancer Center between August 2011 and December 2013 were identified. Medical charts were reviewed for demographics, clinical information, development of CDI, complications of CDI, and mortality. Patients with CDI, defined as having a positive stool PCR done for clinical suspicion of CDI, were compared to those without CDI in order to identify predictors of disease. A t-test was used for comparison of continuous variables and chi-square or Fisher’s exact tests were used for categorical variables, as appropriate.
RESULTS Two hundred and twenty-three patients (60.1% male, mean age 61.3 years, 13% MDS, 87% AML) had 594 unique hospitalizations during the study period. Thirty-four patients (15.2%) were diagnosed with CDI. Factors significantly associated with CDI included lower albumin at time of hospitalization (P < 0.0001), prior diagnosis of CDI (P < 0.0001), receipt of cytarabine-based chemotherapy (P = 0.015), total days of neutropenia (P = 0.014), and total days of hospitalization (P = 0.005). Gender (P = 0.10), age (P = 0.77), proton-pump inhibitor use (P = 0.73), receipt of antibiotics (P = 0.66), and receipt of DNA hypomethylating agent-based chemotherapy (P = 0.92) were not significantly associated with CDI.
CONCLUSION CDI is common in the MDS/AML population. Factors significantly associated with CDI in this population include low albumin, prior CDI, use of cytarabine-based chemotherapy, and prolonged neutropenia. In this study, we have identified a subset of patients in which prophylaxis studies could be targeted.
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Affiliation(s)
- Kamini Shah
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, United States
| | - Bryan F Curtin
- Digestive Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 21201, United States
| | - Christopher Chu
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, United States
| | - Daniel Hwang
- Department of Medicine, University of Maryland School of Medicine, Baltimore 21201, MD, United States
| | - Mark H Flasar
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine and VA Maryland Health Care System, Baltimore, MD 21201, United States
| | - Erik von Rosenvinge
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine and VA Maryland Health Care System, Baltimore, MD 21201, United States
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8
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Curtin BF, Abichandani S, von Rosenvinge EC. Toasted: The Perils of Home Remedy. Gastroenterology 2017; 153:355-356. [PMID: 28668452 DOI: 10.1053/j.gastro.2017.01.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 01/02/2017] [Indexed: 12/02/2022]
Affiliation(s)
- Bryan F Curtin
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, Maryland; National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland; Gastroenterology Section, VA Maryland Health Care System, Baltimore, Maryland
| | - Sonia Abichandani
- Gastroenterology Section, VA Maryland Health Care System, Baltimore, Maryland; Department of Internal Medicine, University of Maryland Medical Center, Baltimore, Maryland
| | - Erik C von Rosenvinge
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine, Baltimore, Maryland; Gastroenterology Section, VA Maryland Health Care System, Baltimore, Maryland
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9
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Curtin BF, Rachakonda VP, Von Rosenvinge EC. Unusually late-onset mycophenolate mofetil-related colitis. Am J Health Syst Pharm 2015; 71:1858-61. [PMID: 25320135 DOI: 10.2146/ajhp140085] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Serious gastrointestinal complications arising 13 years after the initiation of posttransplant immunosuppressant therapy with mycophenolate mofetil are reported. SUMMARY Over a three-month period, a male heart transplant recipient who had taken oral mycophenolate mofetil (2 g daily) for 13 years as part of an immunosuppressant maintenance regimen developed diarrhea and weight loss leading to renal failure and metabolic acidosis. There was no evidence of opportunistic infection, and immunostaining for cytomegalovirus yielded negative results. Colonoscopy revealed areas of congested, erythematous, and nodular mucosa. Histological examination of mucosal biopsy specimens revealed pathological abnormalities typical of those seen in cases of mycophenolate mofetil-associated colitis. On discontinuation of mycophenolate mofetil use, the patient's diarrhea resolved and his renal function improved. Colitis, diarrhea, and other gastrointestinal complications are commonly reported in patients receiving mycophenolate mofetil, an immunosuppressant widely used to prevent rejection of solid organ or bone marrow transplants; however, the onset of such symptoms after more than a decade of continuous use of the drug has not been previously reported. This case suggests that mycophenolate mofetil toxicity should be considered in the evaluation of late-onset posttransplant diarrhea regardless of the duration of therapy. CONCLUSION A 33-year-old man maintained on mycophenolate mofetil for 13 years after heart transplantation developed diarrhea, weight loss, and acute kidney injury over a three-month period. Colonoscopy and biopsy revealed pathological changes consistent with mycophenolate mofetil toxicity, and the patient's symptoms resolved after the drug was discontinued.
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Affiliation(s)
- Bryan F Curtin
- Bryan F. Curtin, M.D., is Resident in Internal Medicine, Department of Internal Medicine; and Vikrant P. Rachakonda, M.D., Ph.D., is Fellow in Gastroenterology/Hepatology, Department of Internal Medicine, University of Maryland Medical Center, Baltimore. Erik C. von Rosenvinge, M.D., is Assistant Professor of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine and Department of Veterans Affairs Maryland Health Care System, Baltimore.
| | - Vikrant P Rachakonda
- Bryan F. Curtin, M.D., is Resident in Internal Medicine, Department of Internal Medicine; and Vikrant P. Rachakonda, M.D., Ph.D., is Fellow in Gastroenterology/Hepatology, Department of Internal Medicine, University of Maryland Medical Center, Baltimore. Erik C. von Rosenvinge, M.D., is Assistant Professor of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine and Department of Veterans Affairs Maryland Health Care System, Baltimore
| | - Erik C Von Rosenvinge
- Bryan F. Curtin, M.D., is Resident in Internal Medicine, Department of Internal Medicine; and Vikrant P. Rachakonda, M.D., Ph.D., is Fellow in Gastroenterology/Hepatology, Department of Internal Medicine, University of Maryland Medical Center, Baltimore. Erik C. von Rosenvinge, M.D., is Assistant Professor of Medicine, Division of Gastroenterology and Hepatology, University of Maryland School of Medicine and Department of Veterans Affairs Maryland Health Care System, Baltimore
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10
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Curtin BF, Zarbalian Y, Flasar MH, Rosenvinge EV. Clostridium difficile-associated disease: Adherence with current guidelines at a tertiary medical center. World J Gastroenterol 2013; 19:8647-8651. [PMID: 24379582 PMCID: PMC3870510 DOI: 10.3748/wjg.v19.i46.8647] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 09/21/2013] [Accepted: 09/29/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To assess adherence with the the Society for Healthcare Epidemiology of America (SHEA)/ the Infectious Diseases Society of America (IDSA) guidelines for management of Clostridium difficile (C. difficile)-associated disease (CDAD) at a tertiary medical center.
METHODS: All positive C. difficile stool toxin assays in adults between May 2010 and May 2011 at the University of Maryland Medical Center were identified. CDAD episodes were classified as guideline adherent or non-adherent and these two groups were compared to determine demographic and clinical factors predictive of adherence. Logistic regression analysis was performed to assess the effect of multiple predictors on guideline adherence.
RESULTS: 320 positive C. difficile stool tests were identified in 290 patients. Stratified by disease severity criteria set forth by the SHEA/IDSA guidelines, 42.2% of cases were mild-moderate, 48.1% severe, and 9.7% severe-complicated. Full adherence with the guidelines was observed in only 43.4% of cases. Adherence was 65.9% for mild-moderate CDAD, which was significantly better than in severe cases (25.3%) or severe-complicated cases (35.5%) (P < 0.001). There was no difference in demographics, hospitalization, ICU exposure, recurrence or 30-d mortality between adherent and non-adherent groups. A multivariate model revealed significantly decreased adherence for severe or severe-complicated episodes (OR = 0.18, 95%CI: 0.11-0.30) and recurrent episodes (OR = 0.46, 95%CI: 0.23-0.95).
CONCLUSION: Overall adherence with the SHEA/IDSA guidelines for management of CDAD at a tertiary medical center was poor; this was most pronounced in severe, severe-complicated and recurrent cases. Educational interventions aimed at improving guideline adherence are warranted.
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Curtin BF, von Rosenvinge EC. A problematic polyp. Gastroenterology 2013; 145:e3-4. [PMID: 23978441 DOI: 10.1053/j.gastro.2013.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 06/06/2013] [Indexed: 12/02/2022]
Affiliation(s)
- Bryan F Curtin
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
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Curtin BF, Seetharam KI, Dhoieam P, Gordon RK, Doctor BP, Nambiar MP. Resveratrol induces catalytic bioscavenger paraoxonase 1 expression and protects against chemical warfare nerve agent toxicity in human cell lines. J Cell Biochem 2008; 103:1524-35. [PMID: 17879943 DOI: 10.1002/jcb.21543] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Current advances in enzyme bioscavenger prophylactic therapy against chemical warfare nerve agent (CWNA) exposure are moving towards the identification of catalytic bioscavengers that can degrade large doses of organophosphate (OP) nerve agents without self destruction. This is a preferred method compared to therapy with the purified stoichiometric bioscavenger, butyrylcholinesterase, which binds OPs 1:1 and would thus require larger doses for treatment. Paraoxonase-1 (PON-1) is one such catalytic bioscavenger that has been shown to hydrolyze OP insecticides and contribute to detoxification in animals and humans. Here we investigated the effects of a common red wine ingredient, Resveratrol (RSV), to induce the expression of PON-1 in the human hepatic cell line HC04 and evaluated the protection against CWNA simulants. Dose-response curves showed that a concentration of 20 microM RSV was optimal in inducing PON-1 expression in HC04 cells. RSV at 20 microM increased the extracellular PON-1 activity approximately 150% without significantly affecting the cells. Higher doses of RSV were cytotoxic to the cells. Resveratrol also induced PON-1 in the human lung cell line A549. RSV pre-treatment significantly (P = 0.05) protected the hepatic cells against exposure to 2x LD(50) of soman and sarin simulants. However, lung cells were protected against soman simulant exposure but not against sarin simulant exposure following RSV treatment. In conclusion, these studies indicate that dietary inducers, such as RSV, can up-regulate PON-1, a catalytic bioscavenger, which can then hydrolyze and protect against CWNA-induced toxicity, providing a prospective new method to protect against CWNA exposure.
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Affiliation(s)
- Bryan F Curtin
- Department of Biochemical Pharmacology, Division of Biochemistry, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, Maryland 20910-7500, USA
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Curtin BF, Pal N, Gordon RK, Nambiar MP. Forskolin, an inducer of cAMP, up-regulates acetylcholinesterase expression and protects against organophosphate exposure in neuro 2A cells. Mol Cell Biochem 2006; 290:23-32. [PMID: 16924422 DOI: 10.1007/s11010-005-9084-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2005] [Accepted: 11/22/2005] [Indexed: 11/25/2022]
Abstract
Bioscavenger prophylactic therapy using purified human acetylcholinesterase (AChE) or butylcholinesterase (BChE) is a promising treatment for future protection against chemical warfare nerve agent exposure. Potential immune response due to the complex structure of cholinesterases, mutations, post-translational modifications, and genetic variation is a limiting factor against purified enzyme therapy. We investigated an alternative bioscavenger approach using forskolin, an inducer of intracellular cyclic AMP (cAMP), which activates AChE promoter and up-regulates its expression. A mouse neuronal cell line, Neuro 2A, was treated with various doses of forskolin and analysis of the expressed enzyme indicates that the AChE activity was significantly increased in cells exposed to repeated administration of the drug every other day for 7-10 days. Cholinesterase enzyme assays showed that the enzyme activity was increased approximately 2-fold for the extracellular enzyme and 3-fold for the intracellular enzyme. The optimal dose found for extracellular enzyme production was 12-24 microM forskolin, while the optimal dose for intracellular was 12 microM. In parallel with the rise in the AChE level, the morphology of forskolin-treated cells showed neurite growth with increasing doses. Forskolin treatment protects Neuro 2A cells from diisopropylflurophophate (DFP), a surrogate of the organophosphate chemical warfare agents soman and sarin, induced toxicity in Neuro 2A cells. These results indicate that transcriptional inducers, such as forskolin, can sufficiently up-regulate cellular AChE production and protect cells against organophosphate toxicity.
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Affiliation(s)
- Bryan F Curtin
- Department of Biochemical Pharmacology, Division of Biochemistry, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910-7500, USA
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Curtin BF, Tetz LM, Compton JR, Doctor BP, Gordon RK, Nambiar MP. Histone acetylase inhibitor trichostatin A induces acetylcholinesterase expression and protects against organophosphate exposure. J Cell Biochem 2006; 96:839-49. [PMID: 16149071 DOI: 10.1002/jcb.20591] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The biological effects of organophosphorous (OP) chemical warfare nerve agents (CWNAs) are exerted by inhibition of acetylcholinesterase (AChE), which prevents the hydrolysis of the neurotransmitter acetylcholine, leading to hypercholinergy, seizures/status epilepticus, respiratory/cardiovascular failure, and potentially death. Current investigations show that bioscavenger therapy using purified fetal bovine AChE in rodents and non-human primates and the more recently tested human butyrylcholinesterase, is a promising treatment for protection against multiple LD(50) CWNA exposures. Potential impediments, due to the complex structure of the enzyme, purification effort, resources, and cost have necessitated alternative approaches. Therefore, we investigated the effects of transcriptional inducers to enhance the expression of AChE to achieve sufficient protection against OP poisoning. Trichostatin A (TSA), an inhibitor of histone deacetylase that de-condenses the chromatin, thereby increasing the binding of transcription factors and mRNA synthesis, was evaluated for induction of AChE expression in various neuronal cell lines. Dose-response curves showed that a concentration of 333 nM TSA was optimal in inducing AChE expression. In Neuro-2A cells, TSA at 333 nM increased the extracellular AChE activity approximately 3-4 fold and intracellular enzyme activity 10-fold. Correlating with the AChE induction, TSA pre-treatment significantly protected the cells against exposure to the organophosphate diisopropylfluorophosphate, a surrogate for the chemical warfare agents soman and sarin. These studies indicate that transcriptional inducers such as TSA up-regulate AChE, which then can bioscavenge any organophosphates present, thereby protecting the cells from OP-induced cytotoxicity. In conclusion, transcriptional inducers are prospective new methods to protect against CWNA exposure.
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Affiliation(s)
- Bryan F Curtin
- Department of Biochemical Pharmacology, Division of Biochemistry, Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, Maryland 20910-7500, USA
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Nambiar MP, Curtin BF, Pal N, Compton JR, Doctor BP, Gordon RK. (34) Transcriptional induction of cholinesterase expression and protection against chemical warfare nerve agents. Chem Biol Interact 2005; 157-158:409-10. [PMID: 16429504 DOI: 10.1016/j.cbi.2005.10.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigated whether transcriptional inducers could enhance the expression of acetylcholinesterase (AChE) in cell lines to achieve protection against organophosphate (OP) poisoning. Trichostatin A (TSA), an inhibitor of histone deacetylase that de-condenses chromatin and increases the binding of transcription factors and mRNA synthesis, induced three- to four-fold extracellular and 8-10-fold intracellular AChE expression at the optimal dose of 165-333 nM in Neuro 2A cells. Pre-treatment with TSA protected against OP exposure. Thus, transcriptional inducers, such as TSA, up-regulate AChE, which then can scavenge the OP and protect the cells from OP-induced toxicity, and are potential novel ways to treat chemical warfare nerve agent (CWNA) exposure.
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Affiliation(s)
- M P Nambiar
- Division of Biochemistry, WRAIR, Silver Spring, MD 20910-7500, USA
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