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Ikuo hirano

Evan S Dellon, Ikuo Hirano
Eosinophilic esophagitis (EoE) has emerged over the past 2 decades as a major cause of upper gastrointestinal morbidity. Over this time, the epidemiology of EoE has also rapidly evolved. EoE has transformed from a rare case-reportable condition to disease that is commonly encountered in the gastroenterology clinic, hospital emergency room, and endoscopy suite. The incidence and prevalence are increasing at rates that outpace increased disease recognition. Current incidence estimates range from 5 to 10 cases per 100,000, and current prevalence estimates range from 0...
July 31, 2017: Gastroenterology
Mayu Kasubuchi, Keita Watanabe, Kanako Hirano, Daisuke Inoue, Xuan Li, Kazuya Terasawa, Morichika Konishi, Nobuyuki Itoh, Ikuo Kimura
Recently, sex steroid membrane receptors garnered world-wide attention because they may be related to sex hormone-mediated unknown rapid non-genomic action that cannot be currently explained by their genomic action via nuclear receptors. Progesterone affects cell proliferation and survival via non-genomic effects. In this process, membrane progesterone receptors (mPRα, mPRβ, mPRγ, mPRδ, and mPRε) were identified as putative G protein-coupled receptors (GPCRs) for progesterone. However, the structure, intracellular signaling, and physiological functions of these progesterone receptors are still unclear...
July 12, 2017: Scientific Reports
Ikuo Hirano
No abstract text is available yet for this article.
June 2017: Gastroenterology & Hepatology
Ikuo Hirano, Stuart Spechler, Glenn Furuta, Evan S Dellon
Since first characterized in 2 small case series in the early 1990s, eosinophilic esophagitis (EoE) has emerged as a commonly identified cause of esophageal symptoms in children and adults.(1,2) Although several highly effectively dietary, pharmacologic, and endoscopic therapies have been reported, none is currently approved by either the US Food and Drug Administration (FDA) or European regulatory authorities. Evolving diagnostic criteria have challenged drug development, in particular the recognition of complex interactions with the most prevalent esophageal disorder, gastroesophageal reflux disease (GERD)...
August 2017: Clinical Gastroenterology and Hepatology
Dustin A Carlson, Ikuo Hirano
The functional luminal imaging probe (FLIP) provides a novel method to evaluate esophageal physiology and function in both health and disease. FLIP enables assessment of a previously underexplored component of esophageal function, distensibility, by utilizing high-resolution impedance planimetry to evaluate the relationship of the esophageal luminal geometry with pressure during controlled volumetric distension. Recent studies have described the potential utility of FLIP to evaluate the severity and effectiveness of therapy for esophageal diseases including achalasia, gastroesophageal reflux disease, and eosinophilic esophagitis...
March 2017: Current Treatment Options in Gastroenterology
Ikuo Hirano, John E Pandolfino, Guy E Boeckxstaens
The functional luminal imaging probe is a Food and Drug Administration-approved measurement tool used to measure simultaneous pressure and diameter to guide management of various upper gastrointestinal disorders. Additionally, this tool is also approved to guide therapy during bariatric procedures and specialized esophageal surgery. Although it has been commercially available since 2009 as the endolumenal functional lumen imaging probe (EndoFLIP), the functional luminal imaging probe has had limited penetrance into clinical settings outside of specialized centers...
March 2017: Clinical Gastroenterology and Hepatology
Yu Yamamoto, Koichi Aizawa, Makiko Mieno, Mika Karamatsu, Yasuko Hirano, Kuniko Furui, Tatsuya Miyashita, Kazumitsu Yamazaki, Takahiro Inakuma, Ikuo Sato, Hiroyuki Suganuma, Teruaki Iwamoto
BACKGROUND AND OBJECTIVES: This study aimed to investigate the effects of tomato juice consumption on seminal plasma lycopene levels and sperm parameters in infertile men. METHODS AND STUDY DESIGN: Subjects were male infertility patients with poor sperm concentration (<20×10 6/mL) and/or motility (<50%). Following a fourweek observation period, subjects were randomly assigned among three groups: a tomato juice group, an antioxidant group, and a control group...
January 2017: Asia Pacific Journal of Clinical Nutrition
Ikuo Hirano, Norio Suzuki, Shun Yamazaki, Hiroki Sekine, Naoko Minegishi, Ritsuko Shimizu, Masayuki Yamamoto
The erythropoietin (Epo) gene is under tissue-specific inducible regulation. Because the kidney is the primary EPO-producing tissue in adults, impaired EPO production in chronic kidney disorders results in serious renal anemia. The Epo gene contains a liver-specific enhancer in the 3' region, but the kidney-specific enhancer for gene expression in renal EPO-producing (REP) cells remains elusive. Here, we examined a conserved upstream element for renal Epo regulation (CURE) region that spans 17.4 kb to 3.6 kb upstream of the Epo gene and harbors several phylogenetically conserved elements...
February 15, 2017: Molecular and Cellular Biology
Evan S Dellon, David A Katzka, Margaret H Collins, Mohamed Hamdani, Sandeep K Gupta, Ikuo Hirano
BACKGROUND & AIMS: Pharmacologic treatment of eosinophilic esophagitis (EoE) is limited to off-label use of corticosteroids not optimized for esophageal delivery. We performed a randomized, controlled phase 2 trial to assess the ability of budesonide oral suspension (BOS), a novel muco-adherent topical steroid formulation, to reduce symptoms and esophageal eosinophilia in adolescents and adults with EoE. METHODS: In this multicenter, randomized, double-blind, placebo-controlled, parallel-group trial, 93 EoE patients between the ages of 11 and 40 years with dysphagia and active esophageal eosinophilia were randomized to receive either BOS 2 mg or placebo twice daily for 12 weeks...
March 2017: Gastroenterology
Ikuo Hirano
No abstract text is available yet for this article.
November 15, 2016: American Journal of Gastroenterology
Dustin A Carlson, Peter J Kahrilas, Zhiyue Lin, Ikuo Hirano, Nirmala Gonsalves, Zoe Listernick, Katherine Ritter, Michael Tye, Fraukje A Ponds, Ian Wong, John E Pandolfino
OBJECTIVES: Esophagogastric junction (EGJ) distensibility and distension-mediated peristalsis can be assessed with the functional lumen imaging probe (FLIP) during a sedated upper endoscopy. We aimed to describe esophageal motility assessment using FLIP topography in patients presenting with dysphagia. METHODS: In all, 145 patients (aged 18-85 years, 54% female) with dysphagia that completed upper endoscopy with a 16-cm FLIP assembly and high-resolution manometry (HRM) were included...
December 2016: American Journal of Gastroenterology
Dustin A Carlson, Ikuo Hirano
No abstract text is available yet for this article.
June 2016: Gastrointestinal Endoscopy
Joan W Chen, John E Pandolfino, Zhiyue Lin, Jody D Ciolino, Nirmala Gonsalves, Peter J Kahrilas, Ikuo Hirano
BACKGROUND/AIMS: A grading system for the endoscopic features of eosinophilic esophagitis (EoE) has recently been validated. The EoE Endoscopic Reference Score (EREFS) incorporates both inflammatory and remodeling features of EoE. High resolution impedance planimetry using the functional luminal imaging probe (FLIP) is a technique for quantification of esophageal remodeling. The aim of this study was to evaluate the association between endoscopic severity with EREFS and esophageal distensibility as measured with the FLIP...
September 2016: Endoscopy
Robert T Kavitt, Ikuo Hirano, Michael F Vaezi
Eosinophilic esophagitis is a relatively recently discovered disease of increasing incidence and prevalence and is a common cause of dysphagia and food bolus impaction. The definition of eosinophilic esophagitis continues to evolve, most recently with the characterization of proton pump inhibitor-responsive esophageal eosinophilia. The number of high-quality prospective, controlled trials guiding therapeutic decisions in eosinophilic esophagitis has increased steadily over the past several years. Treatment options at present focus on dietary therapy, particularly implementation of a 6-food elimination diet, and medical therapy, primarily the use of swallowed, topical corticosteroids...
September 2016: American Journal of Medicine
Evan S Dellon, Margaret H Collins, Peter A Bonis, John Leung, Kelley E Capocelli, Ranjan Dohil, Gary W Falk, Glenn T Furuta, Calies Menard-Katcher, Sandeep K Gupta, Ikuo Hirano, Girish S Hiremath, Amir F Kagalwalla, Barry K Wershil, Chris A Liacouras, Amanda B Muir, Vincent A Mukkada, Philip E Putnam, Alain M Schoepfer, Alex Straumann, John M Wo, Guang-Yu Yang, Marc E Rothenberg, Nirmala Gonsalves
No abstract text is available yet for this article.
December 2016: Clinical Gastroenterology and Hepatology
Ikuo Hirano
Collaborative efforts by pediatric and adult gastroenterologists, allergists, dieticians, and pathologists have brought about marked progress in the recognition, understanding, and management of eosinophilic esophagitis (EoE) over the past two decades. Once an esoteric diagnosis, EoE is now increasingly identified as a major cause of morbidity, afflicting both children and adults. The detection of mucosal eosinophils has evolved from a diagnostic feature of acid reflux to a biomarker of food sensitization of the esophagus...
June 2016: American Journal of Gastroenterology
Leila Kia, Ikuo Hirano
PURPOSE OF REVIEW: Endoscopic detection of mucosal healing has emerged as a primary therapeutic endpoint in inflammatory bowel disease. Endoscopically identified esophageal features are increasingly being utilized in diagnostic and therapeutic decisions in eosinophilic esophagitis (EoE). RECENT FINDINGS: Studies over the past 5 years have demonstrated the validity, accuracy, and clinical relevance of a systematic, endoscopic assessment of esophageal abnormalities in EoE...
July 2016: Current Opinion in Gastroenterology
Gen Kaneko, Hirohito Shirakami, Yuki Hirano, Moemi Oba, Hazuki Yoshinaga, Anurak Khieokhajonkhet, Reiko Nagasaka, Hidehiro Kondo, Ikuo Hirono, Hideki Ushio
Adipose tissue is a lipid storage organ characterized by the pronounced accumulation of adipocytes. Although adipose tissues are found in various parts of the vertebrate body, it is unclear whether these tissues have a common ancestral origin or have evolved in several phylogenetic lineages by independent adipocyte accumulation events. To gain insight into the evolutionary history of vertebrate adipose tissues, we determined the distribution of adipocytes by oil red O staining in skeletal muscle of 10 teleost species spanning eight orders: Tetraodontiformes, Pleuronectiformes, Spariformes, Salmoniformes, Clupeiformes, Beloniformes, Osmeriformes, and Cypriniformes...
April 2016: Zoological Science
Kara L Kliewer, Carina Venter, Alison M Cassin, J Pablo Abonia, Seema S Aceves, Peter A Bonis, Evan S Dellon, Gary W Falk, Glenn T Furuta, Nirmala Gonsalves, Sandeep K Gupta, Ikuo Hirano, Amir Kagalwalla, John Leung, Vincent A Mukkada, Jonathan M Spergel, Marc E Rothenberg
Eosinophilic esophagitis (EoE), a food antigen-mediated disease, is effectively treated with the dietary elimination of 6 foods commonly associated with food allergies (milk, wheat, egg, soy, tree nuts/peanuts, and fish/shellfish). Because wheat shares homologous proteins (including gluten) with barley and rye and can also be processed with these grains, some clinicians have suggested that barley and rye might also trigger EoE as a result of cross-reaction and/or cross-contamination with wheat. In this article, we discuss the theoretical risks of cross-reactivity and cross-contamination among wheat, barley, and rye proteins (including gluten); assess common practices at EoE treatment centers; and provide recommendations for dietary treatment and future studies of EoE...
April 2016: Journal of Allergy and Clinical Immunology
Javier Molina-Infante, Albert J Bredenoord, Edaire Cheng, Evan S Dellon, Glenn T Furuta, Sandeep K Gupta, Ikuo Hirano, David A Katzka, Fouad J Moawad, Marc E Rothenberg, Alain Schoepfer, Stuart J Spechler, Ting Wen, Alex Straumann, Alfredo J Lucendo
Consensus diagnostic recommendations to distinguish GORD from eosinophilic oesophagitis (EoE) by response to a trial of proton pump inhibitors (PPIs) unexpectedly uncovered an entity called 'PPI-responsive oesophageal eosinophilia' (PPI-REE). PPI-REE refers to patients with clinical and histological features of EoE that remit with PPI treatment. Recent and evolving evidence, mostly from adults, shows that patients with PPI-REE and patients with EoE at baseline are clinically, endoscopically and histologically indistinguishable and have a significant overlap in terms of features of Th2 immune-mediated inflammation and gene expression...
March 2016: Gut
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