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Michael Camilleri

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https://www.readbyqxmd.com/read/28911951/anniversary-tribute-from-the-editors-of-clinical-gastroenterology-and-hepatology
#1
Michael Camilleri, C Mel Wilcox, Hashem B El-Serag, Fasiha Kanwal
No abstract text is available yet for this article.
September 11, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28899672/large-meckel-s-diverticulum-and-dilated-adjacent-small-intestine-presenting-with-intestinal-obstruction
#2
Kathleen van Malderen, Michael Camilleri
No abstract text is available yet for this article.
September 9, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28895582/gastric-motor-dysfunction-in-patients-with-functional-gastroduodenal-symptoms
#3
Seon-Young Park, Andrés Acosta, Michael Camilleri, Duane Burton, W Scott Harmsen, Jean Fox, Lawrence A Szarka
OBJECTIVES: The pathophysiology of dyspeptic symptoms is complex. The aim of this study was to evaluate the association of gastric emptying (GE), gastric accommodation (GA), and respiratory sinus arrhythmia (RSA, to assess vagal dysfunction) in a large cohort with functional gastroduodenal symptoms. METHODS: We reviewed demographic, clinical features, and results of gastric motor and vagal function studies of 1,287 patients (74.0% females, mean age 43.1±15.4 years) who had undergone both single photon emission computed tomography GA and scintigraphic GE...
September 12, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28814481/plausibility-criteria-for-putative-pathophysiological-mechanisms-in-functional-gastrointestinal-disorders-a-consensus-of-experts
#4
Jan Tack, Maura Corsetti, Michael Camilleri, Eamonn Mm Quigley, Magnus Simren, Hidekazu Suzuki, Nicholas J Talley, Hans Tornblom, Lukas Van Oudenhove
BACKGROUND AND AIMS: The functional gastrointestinal disorders (FGIDs) are extremely common conditions associated with a considerable personal, social and health economic burden. Managing FGIDs in clinical practice is challenging because of the uncertainty of symptom-based diagnosis, the high frequency of overlap between these conditions and the limited efficacy of available therapies. It has often been argued that successful drug development and management of FGIDs requires knowledge of the underlying pathophysiology...
August 16, 2017: Gut
https://www.readbyqxmd.com/read/28814387/effects-of-nk1-receptors-on-gastric-motor-functions-and-satiation-in-healthy-humans-results-from-a-controlled-trial-with-the-nk1-antagonist-aprepitant
#5
Deepti Jacob, Irene A Busciglio, Duane D Burton, Houssam Halawi, Ibironke Oduyebo, Deborah Rhoten, Michael Ryks, W Scott Harmsen, Michael Camilleri
Aprepitant, an NK1 receptor antagonist, is approved for the treatment of chemotherapy-induced or postoperative emesis by blocking NK1 receptors in the brain stem vomiting center. Effects of NK1 receptors on gastric functions and postprandial symptoms in humans are unclear; a single, crossover study did not show a significant effect of aprepitant on gastrointestinal transit. Our aim was to compare, in a randomized, double-blind, placebo-controlled, parallel-group study (12 healthy volunteers per group), effects of aprepitant vs...
August 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28774870/relationship-of-gastric-emptying-or-accommodation-with-satiation-satiety-and-postprandial-symptoms-in-health
#6
Houssam Halawi, Michael Camilleri, Andres Acosta, Maria I Vazquez-Roque, Ibironke Oduyebo, Duane D Burton, Irene A Busciglio, Alan R Zinsmeister
The contributions of gastric emptying (GE) and gastric accommodation (GA) to satiation, satiety, and postprandial symptoms remain unclear. We aimed to evaluate the relationships between GA or GE with satiation, satiety, and postprandial symptoms in healthy overweight or obese volunteers (total n=285, 73% females, mean BMI 33.5kg/m2): 26 prospectively studied obese, otherwise healthy participants and 259 healthy subjects with previous similar GI testing. We assessed GE of solids, gastric volumes, calorie intake at buffet meal, satiation by measuring volume to comfortable fullness (VTF) and maximum tolerated volume (MTV) using Ensure® nutrient drink test (30mL/min), and symptoms 30 minutes after MTV...
August 3, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28760384/efficacy-and-safety-of-relamorelin-in-diabetics-with-symptoms-of-gastroparesis-a-randomized-placebo-controlled-study
#7
Michael Camilleri, Richard W McCallum, Jan Tack, Sharon C Spence, Keith Gottesdiener, Fred T Fiedorek
BACKGROUND & AIMS: Gastroparesis is a complication of diabetes with few treatment options. Relamorelin (also called RM-131) is a selective, prokinetic agonist of ghrelin. We aimed to evaluate efficacy of relamorelin on symptoms and gastric emptying (GE) in a 12-week, phase 2B study of diabetic patients with moderate to severe gastroparesis symptoms (DG). METHODS: We performed a study of 393 patients with DG (37.7% male; 9.9% with type 1 diabetes; median age, 58...
July 28, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28716436/frontal-fibrosing-alopecia-among-men-a%C3%A2-clinicopathologic-study-of-7-cases
#8
Stanislav N Tolkachjov, Hafsa M Chaudhry, Michael J Camilleri, Rochelle R Torgerson
BACKGROUND: Frontal fibrosing alopecia (FFA) is a lichen planopilaris-variant scarring alopecia that has rarely been described in men. OBJECTIVE: To characterize the clinicopathologic findings of FFA in men by studying a series of 7 male patients. METHODS: We conducted a retrospective review of all cases of male patients with FFA at the Mayo Clinic from 1992 to 2016. RESULTS: Seven male patients with FFA were identified...
October 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28686075/pharmacogenetics-and-the-treatment-of-functional-gastrointestinal-disorders
#9
Houssam Halawi, Michael Camilleri
The diagnosis and management of functional gastrointestinal disorders (FGIDs) remain very challenging. In the era of precision medicine, it is important to individualize the treatment of these conditions by providing targeted and effective therapies while minimizing the risk of medication side effects. By using genetic information that predicts and affects the responses to specific medications, it is anticipated that the science of pharmacogenetics in FGIDs will advance the practice of precision medicine. The pathophysiology of FGIDs is complex, involving the interaction between predisposing genetic and environmental factors...
July 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28666948/bile-acid-deficiency-in-a-subgroup-of-patients-with-irritable-bowel-syndrome-with-constipation-based-on-biomarkers-in-serum-and-fecal-samples
#10
Priya Vijayvargiya, Irene Busciglio, Duane Burton, Leslie Donato, Alan Lueke, Michael Camilleri
BACKGROUND & AIMS: Short-term administration of delayed-release chenodeoxycholic acid to patients with irritable bowel syndrome with constipation (IBS-C) accelerates colonic transit and reduces symptoms. A preliminary study has shown that patients with IBS-C have reduced levels of bile acids (BAs) in feces and reduced synthesis of BA. We compared the levels of primary and secondary BAs in fecal samples collected over a 48-hour period from patients with IBS-C on a diet that contained 100 g fat per day, and compared them with levels in samples from healthy volunteers (controls)...
June 27, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28583824/a-selection-of-best-aga-abstracts-of-ddw-2017
#11
Michael Camilleri
No abstract text is available yet for this article.
June 2, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28529168/opioids-in-gastroenterology-treating-adverse-effects-and-creating-therapeutic-benefits
#12
Michael Camilleri, Anthony Lembo, David A Katzka
The use of opioid medications on both an acute and chronic basis is ubiquitous in the United States. As opioid receptors densely populate the gastrointestinal tract, symptoms and side effects can be expected in these patients. In the esophagus, dysmotility may result, manifesting with dysphagia and a syndrome indistinguishable from primary achalasia. In the stomach, a marked delay in gastric emptying may occur with postprandial nausea and early satiety. Postoperatively, particularly with abdominal surgery, opioid-induced ileus may ensue...
September 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28500061/abdominal-electroacupuncture-demonstrates-an-increase-in-complete-spontaneous-bowel-movements
#13
Deepti Jacob, Priya Vijayvargiya, Michael Camilleri
No abstract text is available yet for this article.
May 12, 2017: Evidence-based Medicine
https://www.readbyqxmd.com/read/28478970/langerhans-cell-histiocytosis-presenting-as-a-blueberry-muffin-rash
#14
Adam R Schmitt, David A Wetter, Michael J Camilleri, Shakila P Khan, Megha M Tollefson
No abstract text is available yet for this article.
July 8, 2017: Lancet
https://www.readbyqxmd.com/read/28410896/white-paper-aga-gastroparesis-clinical-and-regulatory-insights-for-clinical-trials
#15
Pankaj J Pasricha, Michael Camilleri, William L Hasler, Henry P Parkman
Gastroparesis continues to represent a large unmet clinical need and a major opportunity for new drug development. This has led to increasing interest by federal funding agencies, regulatory bodies, and industry. This article summarizes the proceedings of the gastroparesis section of the "Drug Development Conference: Clinical Endpoints in Upper GI Disorders" organized by the American Gastroenterological Association in Washington, DC, on October 27-28, 2016. The presentation, diagnosis, and current therapeutic strategies are briefly reviewed, followed by a detailed discussion of the regulatory strategy, recommended endpoints, and future directions...
August 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28323272/constipation-predominant-irritable-bowel-syndrome-females-have-normal-colonic-barrier-and-secretory-function
#16
Stephanie A Peters, Shoko Edogawa, Wendy J Sundt, Roy B Dyer, Daniel A Dalenberg, Amelia Mazzone, Ravinder J Singh, Natalie Moses, Thomas C Smyrk, Christopher Weber, David R Linden, Wallace K MacNaughton, Jerrold R Turner, Michael Camilleri, David A Katzka, Gianrico Farrugia, Madhusudan Grover
OBJECTIVES: The objective of this study was to determine whether constipation-predominant irritable bowel syndrome (IBS-C) is associated with changes in intestinal barrier and secretory function. METHODS: A total of 19 IBS-C patients and 18 healthy volunteers (all females) underwent saccharide excretion assay (0.1 g (13)C mannitol and 1 g lactulose), measurements of duodenal and colonic mucosal barrier (transmucosal resistance (TMR), macromolecular and Escherichia coli Bio-Particle translocation), mucosal secretion (basal and acetylcholine (Ach)-evoked short-circuit current (Isc)), in vivo duodenal mucosal impedance, circulating endotoxins, and colonic tight junction gene expression...
June 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28291238/polymorphisms-of-5-htt-lpr-and-gn%C3%AE-3-825c-t-and-response-to-antidepressant-treatment-in-functional-dyspepsia-a-study-from-the-functional-dyspepsia-treatment-trial
#17
RANDOMIZED CONTROLLED TRIAL
Yuri A Saito, G Richard Locke, Ann E Almazar, Ernest P Bouras, Colin W Howden, Brian E Lacy, John K DiBaise, Charlene M Prather, Bincy P Abraham, Hashem B El-Serag, Paul Moayyedi, Linda M Herrick, Lawrence A Szarka, Michael Camilleri, Frank A Hamilton, Cathy D Schleck, Katherine E Tilkes, Alan R Zinsmeister, Nicholas J Talley
OBJECTIVES: The Functional Dyspepsia Treatment Trial reported that amitriptyline (AMI) was associated with adequate relief of functional dyspepsia (FD) symptoms, but the pharmacogenetics of antidepressant response in FD are not known. GNβ3 825C>T CC genotype has been previously linked to FD and TT genotype to antidepressant response in depression. The ss genotype of the 5-HTT LPR variant of the serotonin transporter gene (SLC6A4) has been linked to selective serotonin reuptake inhibitor (SSRI) response...
June 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28275113/potential-mechanisms-of-effects-of-serum-derived-bovine-immunoglobulin-protein-isolate-therapy-in-patients-with-diarrhea-predominant-irritable-bowel-syndrome
#18
Nelson Valentin, Michael Camilleri, Paula Carlson, Sean C Harrington, Deborah Eckert, Jessica O'Neill, Duane Burton, Jun Chen, Audrey L Shaw, Andres Acosta
Serum-derived bovine immunoglobulin/protein isolate (SBI), an oral nutritional therapy, is efficacious in diverse diarrheal diseases. In an open-label study in 15 patients with irritable bowel syndrome-diarrhea (IBS-D), we evaluated effects of SBI (5.0 g, twice a day) for 8 weeks on safety, on bowel function and abdominal pain, tryptophan metabolism (K:T ratio), intestinal permeability ((13)C-mannitol and lactulose excretion), bile acid synthesis (fasting serum FGF-19 and C4), duodenal and stool microbiome, and the expression of 90 genes related to inflammation, immune function, and tight junctions in duodenal mucosa...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28192107/gastrointestinal-complications-of-obesity
#19
REVIEW
Michael Camilleri, Harmeet Malhi, Andres Acosta
Obesity usually is associated with morbidity related to diabetes mellitus and cardiovascular diseases. However, there are many gastrointestinal and hepatic diseases for which obesity is the direct cause (eg, nonalcoholic fatty liver disease) or is a significant risk factor, such as reflux esophagitis and gallstones. When obesity is a risk factor, it may interact with other mechanisms and result in earlier presentation or complicated diseases. There are increased odds ratios or relative risks of several gastrointestinal complications of obesity: gastroesophageal reflux disease, erosive esophagitis, Barrett's esophagus, esophageal adenocarcinoma, erosive gastritis, gastric cancer, diarrhea, colonic diverticular disease, polyps, cancer, liver disease including nonalcoholic fatty liver disease, cirrhosis, hepatocellular carcinoma, gallstones, acute pancreatitis, and pancreatic cancer...
May 2017: Gastroenterology
https://www.readbyqxmd.com/read/28174725/2015-james-w-freston-single-topic-conference-a%C3%A2-renaissance%C3%A2-in-the-understanding-and-management-of%C3%A2-irritable-bowel-syndrome
#20
Lin Chang, Margaret M Heitkemper, John W Wiley, Michael Camilleri
No abstract text is available yet for this article.
July 2016: Cellular and Molecular Gastroenterology and Hepatology
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