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Journal of Gastroenterology

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https://www.readbyqxmd.com/read/28224228/validation-of-serological-models-for-staging-and-prognostication-of-hcc-in-patients-from-a-japanese-nationwide-survey
#1
Hienori Toyoda, Toshifumi Tada, Philip J Johnson, Namiki Izumi, Masumi Kadoya, Shuichi Kaneko, Norihiro Kokudo, Yonson Ku, Shoji Kubo, Takashi Kumada, Yutaka Matsuyama, Osamu Nakashima, Michiie Sakamoto, Tadatoshi Takayama, Masatoshi Kudo
BACKGROUND: Two serology-based scoring models for prognostication of patients with hepatocellular carcinoma (HCC), the BALAD and BALAD-2 models, were applied to a Japanese cohort of a nationwide follow-up survey of HCC. The ability of these models to predict the progression of HCC and the deterioration of liver function and to assess prognosis was evaluated. METHODS: BALAD and BALAD-2 scores were calculated in 24,029 patients from a cohort of Japanese nationwide survey based on the serum levels of five markers (bilirubin, albumin, lens culinaris agglutinin-reactive alpha-fetoprotein, alpha-fetoprotein, and des-gamma-carboxy prothrombin) measured at the time of HCC diagnosis...
February 21, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28210867/management-and-outcome-of-gastrointestinal-bleeding-in-patients-taking-oral-anticoagulants-or-antiplatelet-drugs
#2
Sven Pannach, Julia Goetze, Sandra Marten, Thomas Schreier, Luise Tittl, Jan Beyer-Westendorf
BACKGROUND: Non-vitamin K dependent oral anticoagulants (NOACs) significantly decrease overall major bleeding rates compared with vitamin K antagonists (VKAs) but there is conflicting evidence regarding the relative risk of gastrointestinal bleeding. Since data regarding the types, the management, and the outcome of NOAC-associated gastrointestinal bleeding are scarce, we aimed to fill this gap by comparing cases of gastrointestinal bleeding associated with NOAC, VKA, or antiplatelet therapy...
February 16, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28197804/molecular-alterations-in-colorectal-adenomas-and-intramucosal-adenocarcinomas-defined-by-high-density-single-nucleotide-polymorphism-arrays
#3
Makoto Eizuka, Tamotsu Sugai, Wataru Habano, Noriyuki Uesugi, Yayoi Takahashi, Keisuke Kawasaki, Eiichiro Yamamoto, Hiromu Suzuki, Takayuki Matsumoto
BACKGROUND: We examined colorectal adenomas and intramucosal adenocarcinomas (IMAs) to develop a genome-wide overview of copy number alterations (CNAs) during colorectal tumorigenesis. METHODS: We analysed CNAs using a high-resolution SNP array of isolated tumour glands obtained from 55 colorectal adenomas (35 low-grade adenomas and 20 high-grade adenomas) and 30 IMAs. Next, we examined whether frequent CNAs differed between low-grade and high-grade adenomas or high-grade adenomas and IMAs...
February 14, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28197803/obesity-related-parameters-and-colorectal-adenoma-development
#4
Tae Jun Kim, Jee Eun Kim, Yoon-Ho Choi, Sung Noh Hong, Young-Ho Kim, Dong Kyung Chang, Poong-Lyul Rhee, Min-Ji Kim, Sin-Ho Jung, Hee Jung Son
BACKGROUND: Obesity increases the risk of colorectal adenoma and colorectal cancer. However, the obesity-related parameters that are best for assessing the risk of colorectal adenoma development remain unclear. We analyzed the parameters that may best describe the association between obesity and colorectal adenoma development. METHODS: In this retrospective cohort study, 3405 individuals underwent screening colonoscopy during routine health examinations. We measured body mass index; waist circumference; and metabolic parameters such as high-density lipoprotein-cholesterol, glucose, triglyceride, and systolic blood pressure...
February 14, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28197802/effects-of-vaccine-acquired-polyclonal-anti-hbs-antibodies-on-the-prevention-of-hbv-infection-of-non-vaccine-genotypes
#5
Masaki Kato, Susumu Hamada-Tsutsumi, Chiaki Okuse, Aiko Sakai, Nobuyuki Matsumoto, Masaaki Sato, Toshiyuki Sato, Mitsumi Arito, Kazuki Omoteyama, Naoya Suematsu, Kazuki Okamoto, Takanobu Kato, Fumio Itoh, Ryo Sumazaki, Yasuhito Tanaka, Hiroshi Yotsuyanagi, Tomohiro Kato, Manae Suzuki Kurokawa
BACKGROUND: In universal hepatitis B (HB) vaccination, single vaccine-derived polyclonal anti-HBs antibodies (anti-HBs) need to inhibit infection of HB viruses (HBV) of non-vaccine genotypes. We experimentally addressed this issue. METHODS: Anti-HBs-positive sera were obtained by vaccination with genotype A- or C-derived HBs antigen (HBsAg, gtA-sera or gtC-sera). Their reactivity to genotype A- and C-derived HBsAg (gtA-Ag and gtC-Ag) was measured by ELISA. The capacity of sera to neutralize HBV was evaluated using an in vitro infection model...
February 14, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28194526/long-term-outcomes-after-treatment-for-t1-colorectal-carcinoma-a-multicenter-retrospective-cohort-study-of-hiroshima-gi-endoscopy-research-group
#6
Yuzuru Tamaru, Shiro Oka, Shinji Tanaka, Shinji Nagata, Yuko Hiraga, Toshio Kuwai, Akira Furudoi, Tadamasa Tamura, Masaki Kunihiro, Hideharu Okanobu, Koichi Nakadoi, Hiroyuki Kanao, Makoto Higashiyama, Koji Arihiro, Kazuya Kuraoka, Fumio Shimamoto, Kazuaki Chayama
BACKGROUND: We aimed to clarify the long-term outcomes of patients with T1 colorectal carcinoma (CRC) after endoscopic resection (ER) and surgical resection. METHODS: We examined T1 CRC patients treated during 1992-2008 and who had ≥5 years of follow-up. Patients who did not meet the curative criteria after ER according to the Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines were defined as "non-endoscopically curable" and classified into three groups: ER alone (Group A: 121 patients), additional surgery after ER (Group B: 238 patients), and surgical resection alone (Group C: 342 patients)...
February 13, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28188367/current-status-of-achalasia-management-a-review-on-diagnosis-and-treatment
#7
REVIEW
Joshua Tuason, Haruhiro Inoue
BACKGROUND: Achalasia is a rare esophageal motility disorder that is characterized by loss of peristalsis and failure of relaxation of the lower esophageal sphincter (LES), particularly during swallowing. This review focuses on the diagnosis of esophageal motility disorders as defined by the Chicago Classification ver 3.0, and presents management options with regard to per-oral endoscopic myotomy (POEM) as the treatment of choice. METHODS: A concise review of literature was performed for articles related to the management of achalasia, and this was contrasted with our institution's current practice...
February 10, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28184998/natural-history-of-chronic-hepatitis-b-virus-infection-in-children-in-japan-a-comparison-of-mother-to-child-transmission-with-horizontal-transmission
#8
Tomoko Takano, Hitoshi Tajiri, Satoyo Hosono, Ayano Inui, Jun Murakami, Kosuke Ushijima, Yoko Miyoshi, Yuri Etani, Daiki Abukawa, Mitsuyoshi Suzuki, Stephen Brooks
BACKGROUND: It is necessary to evaluate the natural history of children with hepatitis B virus (HBV) infection in each country to consider their long-term management. METHODS: A multi-center observational study of children with chronic HBV infection who were diagnosed at age ≤15 years was carried out in 18 hospitals in Japan. RESULTS: We reviewed children with HBV infection including 381 with mother-to-child transmission (MTCT) and 154 with horizontal transmission, genotype C being the most prevalent virus genotype (83%)...
February 9, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28168321/age-at-onset-is-associated-with-the-seasonal-pattern-of-onset-and-exacerbation-in-inflammatory-bowel-disease
#9
Manabu Araki, Shinichiro Shinzaki, Takuya Yamada, Shoko Arimitsu, Masato Komori, Narihiro Shibukawa, Akira Mukai, Sachiko Nakajima, Kazuo Kinoshita, Shinji Kitamura, Yoko Murayama, Hiroyuki Ogawa, Yuichi Yasunaga, Masahide Oshita, Hiroyuki Fukui, Eiji Masuda, Masahiko Tsujii, Satoshi Hiyama, Takahiro Inoue, Hideki Iijima, Tetsuo Takehara
BACKGROUND: Environmental factors are suggested to affect the pathogenesis of several diseases, including inflammatory bowel disease (IBD). The seasonality of disease onset and exacerbation in IBD, however, are not well established. We herein aimed to clarify the disease seasonality and to investigate the underlying characteristics in IBD patients exhibiting seasonality of the disease course. METHODS: This was a multicenter observational study comprising 20 institutions (Osaka Gut Forum) in Japan...
February 6, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28138756/treatment-with-sofosbuvir-and-ledipasvir-without-ribavirin-for-12%C3%A2-weeks-is-highly-effective-for-recurrent-hepatitis-c-virus-genotype-1b-infection-after-living-donor-liver-transplantation-a-japanese-multicenter-experience
#10
Yoshihide Ueda, Toru Ikegami, Nobuhisa Akamatsu, Akihiko Soyama, Masahiro Shinoda, Ryoichi Goto, Hideaki Okajima, Tomoharu Yoshizumi, Akinobu Taketomi, Yuko Kitagawa, Susumu Eguchi, Norihiro Kokudo, Shinji Uemoto, Yoshihiko Maehara
BACKGROUND: The optimal therapy for recurrent hepatitis C virus (HCV) infection after liver transplantation has not yet been established. This study aimed to clarify the efficacy and safety of interferon-free therapy with sofosbuvir and ledipasvir without ribavirin for 12 weeks in Japanese patients with HCV genotype 1b infection after living donor liver transplantation. METHODS: A cohort study of living donor liver transplant recipients with recurrent HCV genotype 1b infection treated with sofosbuvir (400 mg/day) and ledipasvir (90 mg/day) was performed at six liver transplant centers in Japan...
January 30, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28138755/epithelial-barrier-dysfunction-in-lymphocytic-colitis-through-cytokine-dependent-internalization-of-claudin-5-and-8
#11
Christian Barmeyer, Irene Erko, Karem Awad, Anja Fromm, Christian Bojarski, Svenja Meissner, Christoph Loddenkemper, Martin Kerick, Britta Siegmund, Michael Fromm, Michal R Schweiger, Jörg-Dieter Schulzke
BACKGROUND: Watery diarrhea is the cardinal symptom of lymphocytic colitis (LC). We have previously shown that colonic Na malabsorption is one of the major pathologic alterations of LC and found evidence for an epithelial barrier defect. On these grounds, this study aimed to identify the inherent mechanisms of this epithelial barrier dysfunction and its regulatory features. METHODS: Epithelial resistance (R (epi)) was determined by one-path impedance spectroscopy and (3)H-mannitol fluxes were performed on biopsies from sigmoid colon in miniaturized Ussing chambers...
January 30, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28130705/nationwide-epidemiological-survey-of-early-chronic-pancreatitis-in-japan
#12
Atsushi Masamune, Kazuhiro Kikuta, Tatsuhide Nabeshima, Eriko Nakano, Morihisa Hirota, Atsushi Kanno, Kiyoshi Kume, Shin Hamada, Tetsuhide Ito, Motokazu Fujita, Atsushi Irisawa, Masanori Nakashima, Keiji Hanada, Takaaki Eguchi, Ryusuke Kato, Osamu Inatomi, Akio Shirane, Yoshifumi Takeyama, Ichiro Tsuji, Tooru Shimosegawa
BACKGROUND: The world's first diagnostic criteria for early CP were proposed in 2009 in Japan. This study aimed to clarify the clinico-epidemiological features of early CP in Japan. METHODS: Patients with early CP who were diagnosed according to the diagnostic criteria for early CP and had visited the selected hospitals in 2011 were surveyed. The study consisted of two-stage surveys: the number of patients with early CP was estimated by the first questionnaire and their clinical features were assessed by the second questionnaire...
January 27, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28120127/a-novel-prostanoid-ep1-receptor-antagonist-ono-8539-reduces-acid-induced-heartburn-symptoms-in-healthy-male-volunteers-a-randomized-clinical-trial
#13
Takashi Kondo, Hiroo Sei, Takahisa Yamasaki, Toshihiko Tomita, Yoshio Ohda, Tadayuki Oshima, Hirokazu Fukui, Jiro Watari, Hiroto Miwa
BACKGROUND: Patients with proton pump inhibitor (PPI)-refractory gastroesophageal reflux disease (GERD) have unmet clinical needs. Recently, we reported that esophageal prostaglandin E2 (PGE2) plays a crucial role in the generation of heartburn. In the present study, we focused on the PGE2 receptor, EP1, and investigated the effects of ONO-8539, a novel EP1 receptor antagonist, on heartburn symptoms in healthy male volunteers. METHODS: This prospective, double-blind, placebo-controlled, two-period crossover study was performed in 20 healthy male subjects...
January 24, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28083659/diagnostic-accuracy-of-demarcation-of-undifferentiated-type-early-gastric-cancer-after-helicobacter-pylori-eradication
#14
Yusuke Horiuchi, Junko Fujisaki, Noriko Yamamoto, Masami Omae, Akiyoshi Ishiyama, Toshiyuki Yoshio, Toshiaki Hirasawa, Yorimasa Yamamoto, Tomohiro Tsuchida, Hiroshi Takahashi
BACKGROUND: It is unknown whether Helicobacter pylori (H. pylori) eradication is beneficial when demarcating undifferentiated-type early gastric cancers (UD-type EGCs). This study aimed to determine whether H. pylori eradication is beneficial, and also when benefits become detectable. METHODS: Sixty lesions that were detected as a ≤20-mm lesion without metastasis or ulceration on routine examination, diagnosed as UD-type EGC on biopsy, and treated with endoscopic submucosal dissection between January 2010 and January 2015 were studied...
January 12, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28078471/effects-of-estrogen-on-esophageal-function-through-regulation-of-ca-2-related-proteins
#15
Kipung Kim, Dongoh Lee, Changhwan Ahn, Hee Young Kang, Beum-Soo An, Yeon Hee Seong, Eui-Bae Jeung
BACKGROUND: The calcium ion is important for physiological functions in all tissues and organs and essential to many vital functions, including hormone secretion and muscle contraction. The intracellular concentration of calcium is regulated by calcium related proteins such as CaBP-9k, PMCA1, and NCX1. In this study, we investigated the relationship between calcium regulation and esophageal functions such as mucin secretion and smooth muscle contraction. METHODS: To evaluate the influence of sex steroid hormones, immature rats were treated for 3 days with estradiol (E2), progesterone (P4), and their antagonists (ICI 182,780, and RU486)...
January 11, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28078470/appropriate-timing-to-start-and-optimal-response-evaluation-of-high-dose-corticosteroid-therapy-for-patients-with-acute-liver-failure
#16
Keisuke Kakisaka, Kojiro Kataoka, Yuji Suzuki, Hidekatsu Kuroda, Yasuhiro Takikawa
BACKGROUND: Corticosteroid therapy has been commonly administered to patients with acute liver injury (ALI)/acute liver failure (ALF) in Japan to prevent the development of hepatic encephalopathy, but the appropriate timing to start corticosteroid therapy has not been determined and optimal response evaluation of the therapy has not been conducted. We prospectively investigated the optimal timing to start therapy on the established severity indication: the Japan Hepatic Encephalopathy Prediction Model (JHEPM) and prothrombin time (PT)...
January 11, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28078469/new-resistance-associated-substitutions-and-failure-of-dual-oral-therapy-with-daclatasvir-and-asunaprevir
#17
Seiichi Mawatari, Kohei Oda, Kazuaki Tabu, Sho Ijuin, Kotaro Kumagai, Yukiko Inada, Hirofumi Uto, Yasunari Hiramine, Takeshi Kure, Kunio Fujisaki, Masafumi Hashiguchi, Takeshi Hori, Akihiko Oshige, Dai Imanaka, Akiko Saishoji, Oki Taniyama, Haruka Sakae, Tsutomu Tamai, Akihiro Moriuchi, Akio Ido
BACKGROUND: Daclatasvir (DCV) and asunaprevir (ASV) combination therapy has been primarily used in patients without NS5A L31 or Y93 resistance-associated substitutions (RASs) before treatment. We examined the characteristics of patients without these baseline RASs who did not achieve hepatitis C virus eradication with DCV and ASV combination therapy and identified new baseline NS5A RASs that are closely associated with failure of combination therapy. METHODS: Three hundred thirty-five patients with hepatitis C virus genotype 1 infection with no NS5A L31, NS5A Y93, and NS3 D168 RASs before DCV and ASV combination therapy and no history of protease inhibitor therapy were enrolled...
January 11, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28062947/low-dose-maintenance-steroid-treatment-could-reduce-the-relapse-rate-in-patients-with-type-1-autoimmune-pancreatitis-a-long-term-japanese-multicenter-analysis-of-510-patients
#18
Kensuke Kubota, Terumi Kamisawa, Kazuichi Okazaki, Shigeyuki Kawa, Kenji Hirano, Yoshiki Hirooka, Kazushige Uchida, Hideyuki Shiomi, Hirotaka Ohara, Kyoko Shimizu, Norikazu Arakura, Atsushi Kanno, Junichi Sakagami, Takao Itoi, Tetsuhide Ito, Toshiharu Ueki, Takayoshi Nishino, Kazuo Inui, Nobumasa Mizuno, Hitoshi Yoshida, Masanori Sugiyama, Eisuke Iwasaki, Atshishi Irisawa, Toru Shimosegawa, Yoshifumi Takeyama, Tsutomu Chiba
BACKGROUND: The effect of maintenance steroid treatment (MST) in reducing the risk of relapse in patients with autoimmune pancreatitis (AIP) remains under debate. The aim of this study was to validate the effect of MST on AIP administered in accordance with the 2010 Japanese consensus guidelines. METHODS: The clinical data of patients with (n = 510) from 22 high-volume centers in Japan were studied. The primary endpoints were the relapse rates (RRs) in patients administered MST versus those not administered MST...
January 6, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28062946/upregulated-absorption-of-dietary-palmitic-acids-with-changes-in-intestinal-transporters-in-non-alcoholic-steatohepatitis-nash
#19
Hiroki Utsunomiya, Yasunori Yamamoto, Eiji Takeshita, Yoshio Tokumoto, Fujimasa Tada, Teruki Miyake, Masashi Hirooka, Masanori Abe, Teru Kumagi, Bunzo Matsuura, Yoshio Ikeda, Yoichi Hiasa
BACKGROUND: Palmitic acid is an important risk factor for the pathogenesis of non-alcoholic steatohepatitis (NASH), but changes in palmitic acid intestinal absorption in NASH are unclear. The aim of this study was to clarify changes in palmitic acid intestinal absorption and their association with the pathogenesis of NASH. METHODS: A total of 106 participants were recruited to the study, of whom 33 were control subjects (control group), 32 were patients with NASH Brunt stage 1-2 [early NASH (e-NASH)], and 41 were patients with NASH Brunt stage 3-4 [advanced NASH (a-NASH)]...
January 6, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28044208/hepatic-vagus-nerve-regulates-kupffer-cell-activation-via-%C3%AE-7-nicotinic-acetylcholine-receptor-in-nonalcoholic-steatohepatitis
#20
Takahiro Nishio, Kojiro Taura, Keiko Iwaisako, Yukinori Koyama, Kazutaka Tanabe, Gen Yamamoto, Yukihiro Okuda, Yoshinobu Ikeno, Kenji Yoshino, Yosuke Kasai, Masayuki Okuno, Satoru Seo, Takaki Sakurai, Masataka Asagiri, Etsuro Hatano, Shinji Uemoto
BACKGROUND: Nonalcoholic fatty liver disease ranges from simple steatosis to nonalcoholic steatohepatitis (NASH). Kupffer cells play a central role in promoting hepatic inflammation, which leads to the development of NASH. We investigated the anti-inflammatory effect of hepatic vagus-mediated stimulation of the α7 nicotinic acetylcholine receptor (α7nAChR) on Kupffer cells in NASH pathogenesis. METHODS: Wild-type (WT) mice undergoing hepatic vagotomy (HV) were fed a methionine- and choline-deficient (MCD) diet for 1 week...
January 2, 2017: Journal of Gastroenterology
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