| FullText URL | O003032.pdf |
|---|---|
| Author | 岡田 裕之| |
| Published Date | 1996-06-30 |
| Content Type | Thesis or Dissertation |
| Grant Number | 乙第3032号 |
| Granted Date | 1996-06-30 |
| Thesis Type | Doctor of Philosophy in Medical Science |
| Grantor | 岡山大学 |
| language | Japanese |
| JaLCDOI | 10.18926/AMO/53120 |
|---|---|
| FullText URL | 69_1_37.pdf |
| Author | Iwamuro, Masaya| Okada, Hiroyuki| Takata, Katsuyoshi| Kawai, Yoshinari| Kawano, Seiji| Nasu, Junichiro| Kawahara, Yoshiro| Tanaka, Takehiro| Yoshino, Tadashi| Yamamoto, Kazuhide| |
| Abstract | The sensitivity and specificity of magnified endoscopic features for differentiating follicular lymphoma from other diseases with duodenal whitish lesions have never been investigated. Here we compared the magnified endoscopic features of duodenal follicular lymphoma with those of other whitish lesions. We retrospectively reviewed the cases of patients with follicular lymphoma (n＝9), lymphangiectasia (n＝7), adenoma (n＝10), duodenitis (n＝4), erosion (n＝1), lymphangioma (n＝1), and hyperplastic polyp (n＝1). The magnified features of the nine follicular lymphomas included enlarged villi (n＝8), dilated microvessels (n＝5), and opaque white spots of various sizes (n＝9). The lymphangiectasias showed enlarged villi, dilated microvessels, and white spots, but the sizes of the white spots were relatively homogeneous and their margin was clear. Observation of the adenoma and duodenitis revealed only whitish villi. Although the lymphangioma was indistinguishable from the follicular lymphomas by magnified features, it was easily diagnosed based on the macroscopic morphology. In conclusion, magnified endoscopic features, in combination with macroscopic features, are useful for differentiating follicular lymphomas from other duodenal diseases presenting whitish lesions. |
| Keywords | duodenal neoplasm follicular lymphoma gastrointestinal lymphoma magnifying endoscopy |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2015-02 |
| Volume | volume69 |
| Issue | issue1 |
| Publisher | Okayama University Medical School |
| Start Page | 37 |
| End Page | 44 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2015 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 25703169 |
| Web of Science KeyUT | 000349740300004 |
| JaLCDOI | 10.18926/AMO/59957 |
|---|---|
| FullText URL | 74_3_237.pdf |
| Author | Oyama, Atsushi| Uchida, Daisuke| Shiraha, Hidenori| Sawahara, Hiroaki| Kato, Ryo| Iwamuro, Masaya| Horiguchi, Shigeru| Okada, Hiroyuki| |
| Abstract | The physiological role of the reduced expression of immortalized cells (REIC)/Dickkopf-3 (Dkk-3) protein in patients with hepatocellular carcinoma (HCC) remains unclear. In this study, we evaluated the effect of the REIC/Dkk-3 protein on HCC cell proliferation and assessed the relationship between the serum REIC/Dkk-3 protein level and the prognosis in patients with HCC. We evaluated the REIC/Dkk-3 protein-induced anticancer effects on Huh7 and Hep3B cells (HCC cell lines) in the presence of peripheral blood mononuclear cells (PBMCs), and found that combination treatment with REIC/Dkk-3 protein and PBMCs reduced the proliferation of HCC cells (Hep3B: 82.0%±16.3%; Huh7: 72.6%±9.1%). We also studied 194 HCC patients who underwent primary liver resection or primary radiofrequency ablation from 2008 to 2017. Serum REIC/Dkk-3 protein levels were measured by an enzyme-linked immunosorbent assay and compared to the prognostic data. The 3-year disease-free survival of the REIC/Dkk-3 high group was significantly higher than that in the REIC/Dkk-3 low group. In conclusion, this is the first study investigating the relationship between HCC patient survival and serum REIC/Dkk-3 protein levels in a large population. Based on the results, the serum REIC/Dkk-3 protein level should be considered a new prognostic marker for patients with HCC. |
| Keywords | enzyme-linked immunosorbent assay liver resection primary radiofrequency ablation Huh7 Hep3B |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2020-06 |
| Volume | volume74 |
| Issue | issue3 |
| Publisher | Okayama University Medical School |
| Start Page | 237 |
| End Page | 243 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2020 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 32577022 |
| Web of Science KeyUT | 000543363400007 |
| NAID | 120006862798 |
| JaLCDOI | 10.18926/AMO/53912 |
|---|---|
| FullText URL | 69_6_365.pdf |
| Author | Kawano, Seiji| Hiraoka, Sakiko| Okada, Hiroyuki| Akita, Mitsuhiro| Iwamuro, Masaya| Yamamoto, Kazuhide| |
| Abstract | Several studies have identified a relationship between myelodysplastic syndrome and Behçetʼs disease (BD), especially intestinal BD, and trisomy 8 appears to play an important role in these disorders. Despite this, only few case reports or series have been reported in gastroenterology, meaning that endoscopic findings and characteristics of intestinal BD have not been clarified yet. In this report, we describe three cases of intestinal BD associated with myelodysplastic syndrome and trisomy 8, and discuss the clinical features and problems of these disorders from a gastroenterology perspective. |
| Keywords | Behçetʼs disease trisomy 8 myelodysplastic syndrome |
| Amo Type | Case Reports |
| Publication Title | Acta Medica Okayama |
| Published Date | 2015-12 |
| Volume | volume69 |
| Issue | issue6 |
| Publisher | Okayama University Medical School |
| Start Page | 365 |
| End Page | 369 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2015 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 26690248 |
| Web of Science KeyUT | 000368434500007 |
| JaLCDOI | 10.18926/AMO/54511 |
|---|---|
| FullText URL | 70_4_313.pdf |
| Author | Matsumoto, Kazuyuki| Kato, Hironari| Tsutsumi, Koichiro| Mizukawa, Sho| Yabe, Syuntaro| Seki, Hiroyuki| Akimoto, Yutaka| Uchida, Daisuke| Tomoda, Takeshi| Yamamoto, Naoki| Horiguchi, Shigeru| Okada, Hiroyuki| |
| Abstract | Recently, endoscopic ultrasonography (EUS)-guided ethanol ablation for small pancreatic neuroendocrine tumors (p-NETs) has been reported. However, the efficacy and safety of the technique remain unclear. We have launched a prospective pilot study of EUS-guided ethanol ablation for p-NETs. The major eligibility criteria are the presence of a pathologically diagnosed grade (G) 1 or G2 p-NET, a tumor size of 2cm, and being a poor candidate for surgery. A total of 5 patients will be treated. The primary endpoint will be the complete ablation rate at 1 month after treatment. |
| Keywords | pancreatic neuroendocrine tumor ethanol ablation EUS-guided |
| Amo Type | Clinical Study Protocols |
| Publication Title | Acta Medica Okayama |
| Published Date | 2016-08 |
| Volume | volume70 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 313 |
| End Page | 316 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2016 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 27549680 |
| Web of Science KeyUT | 000384748600015 |
| JaLCDOI | 10.18926/AMO/54513 |
|---|---|
| FullText URL | 70_4_323.pdf |
| Author | Yamamoto, Naoki| Kato, Hironari| Mizukawa, Sho| Muro, Shinichiro| Akimoto, Yutaka| Uchida, Daisuke| Tomoda, Takeshi| Matsumoto, Kazuyuki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki| |
| Abstract | Contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS) with contrast agent enabled us to assess the hemodynamics closely, despite limited data in pancreatic tumors. We have initiated a prospective, single arm, and non-randomized study to clarify the accuracy and safety of CH-EUS with Sonazoid and time-intensity curve (TIC) analysis for diagnosing benign or malignant pancreatic tumors. A total of 200 patients will undergo CH-EUS and TIC analysis. Receiver operating characteristic (ROC) analysis will be used to determine the optimal parameter cutoff values for TIC analysis. This will clarify whether CH-EUS and TIC can further improve the diagnosis of pancreatic tumors over conventional EUS. |
| Keywords | CH-EUS pancreatic tumor TIC |
| Amo Type | Clinical Study Protocols |
| Publication Title | Acta Medica Okayama |
| Published Date | 2016-08 |
| Volume | volume70 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 323 |
| End Page | 325 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2016 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 27549682 |
| Web of Science KeyUT | 000384748600017 |
| JaLCDOI | 10.18926/AMO/54602 |
|---|---|
| FullText URL | 70_5_405.pdf |
| Author | Tomoda, Takeshi| Kato, Hironari| Mizukawa, Sho| Muro, Shinichiro| Akimoto, Yutaka| Uchida, Daisuke| Matsumoto, Kazuyuki| Yamamoto, Naoki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki| |
| Abstract | Acute pancreatitis is the major complication of endoscopic retrograde cholangiopancreatography (ERCP). A preliminary research suggested that the administration of nonsteroidal anti-inflammatory drugs (NSAIDs) with nitroglycerin might reduce the incidence of post-ERCP pancreatitis (PEP) more effectively than NSAIDs alone. We conduct a two-arm, multicenter, prospective, randomized, superiority trial to evaluate the additional effect of nitroglycerin for prevention of PEP. A total of 900 patients randomly receive 50 mg diclofenac suppository either alone or with 5 mg isosorbide dinitrate sublingual tablet. The primary endpoint is the occurrence of PEP. This study will clarify whether NSAIDs plus nitroglycerin can prevent PEP. |
| Keywords | post-ERCP pancreatitis NSAIDs nitroglycerin |
| Amo Type | Clinical Study Protocols |
| Note | the word “nitroglycerin” should be corrected to “nitrate” throughout the manuscript.| |
| Publication Title | Acta Medica Okayama |
| Published Date | 2016-10 |
| Volume | volume70 |
| Issue | issue5 |
| Publisher | Okayama University Medical School |
| Start Page | 405 |
| End Page | 408 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2016 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 27777436 |
| Web of Science KeyUT | 000388098700013 |
| Related Url | isReplacedBy http://doi.org/10.18926/AMO/55314 |
| JaLCDOI | 10.18926/AMO/54605 |
|---|---|
| FullText URL | 70_5_417.pdf |
| Author | Mizukawa, Sho| Kato, Hironari| Muro, Shinichiro| Akimoto, Yutaka| Uchida, Daisuke| Tomoda, Takeshi| Matsumoto, Kazuyuki| Yamamoto, Naoki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki| Inoue, Hirofumi| Tanaka, Noriyuki| |
| Abstract | Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) is a standard procedure for precise histological diagnosis of pancreas tumors, but it is sometimes difficult to obtain adequate specimens. EUS Sonopsy CY® is a newly designed needle with original features. This randomized study will compare the tissue collection rate of EUS Sonopsy CY® to that of a conventional needle in EUS-FNA. The major eligibility criteria are as follows: Patients with a pancreatic mass referred for EUSFNA; age ≥20 years, and performance status＜4. The primary outcome is the tissue collection rate. This study will elucidate the efficacy of EUS Sonopsy CY®. |
| Keywords | endoscopic ultrasound-guided fine needle aspiration pancreatic cancer Menghini type needle tip |
| Amo Type | Clinical Study Protocols |
| Publication Title | Acta Medica Okayama |
| Published Date | 2016-10 |
| Volume | volume70 |
| Issue | issue5 |
| Publisher | Okayama University Medical School |
| Start Page | 417 |
| End Page | 420 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2016 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 27777439 |
| Web of Science KeyUT | 000388098700016 |
| JaLCDOI | 10.18926/AMO/54810 |
|---|---|
| FullText URL | 70_6_469.pdf |
| Author | Yamasaki, Yasushi| Takenaka, Ryuta| Hori, Keisuke| Takemoto, Koji| Kawano, Seiji| Kawahara, Yoshiro| Fujiki, Shigeatsu| Okada , Hiroyuki| |
| Abstract | The usefulness of endoscopy in marginal ulcer bleeding has rarely been studied, and the optimal method for preventing rebleeding is unclear. Here we assessed the efficacy of endoscopy in marginal ulcer bleeding and examined the efficacy of proton pump inhibitors (PPIs) in the prevention of rebleeding. A total of 28 patients with marginal ulcer bleeding (21 men, 7 women; median age 58.5 years) were treated by endoscopy. We analyzed the clinical characteristics, results of endoscopic therapy, characteristics of rebleeding patients, and relation between the use of PPIs and the duration of rebleeding. Sixteen patients had active bleeding. Initial hemostasis was achieved in all patients. There were no procedure-related adverse events. Rebleeding occurred in one patient within the first month and in 7 patients thereafter. There was a significant difference in the rebleeding rate between the patients who received a PPI and those who did not. In a multivariate analysis, the non-use of PPIs was a risk factor for rebleeding (hazard ratio, 6.22). Therapeutic endoscopy is effective in achieving hemostasis from marginal ulcer bleeding. PPIs may prevent rebleeding from marginal ulcers. |
| Keywords | marginal ulcer upper gastrointestinal bleeding endoscopic hemostasis proton-pump inhibitor |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2016-12 |
| Volume | volume70 |
| Issue | issue6 |
| Publisher | Okayama University Medical School |
| Start Page | 469 |
| End Page | 475 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2016 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 28003672 |
| JaLCDOI | 10.18926/AMO/54977 |
|---|---|
| FullText URL | 71_2_97.pdf |
| Author | Iwamuro, Masaya| Kondo, Eisei| Tanaka, Takehiro| Hagiya, Hideharu| Kawano, Seiji| Kawahara, Yoshiro| Otsuka, Fumio| Okada, Hiroyuki| |
| Abstract | We retrospectively analyzed the cases of 14 patients (9 women, 5 men, mean age: 51.6 years) with cytomegalovirus (CMV) involvement in the esophagus, stomach, and/or duodenum diagnosed at a single center, to determine their endoscopic features and clinical backgrounds. Thirteen patients (92.9%) had hematologic disease; the other had rheumatoid arthritis. Of the former, 12 patients underwent allogeneic hematopoietic stem cell transplantation, and 9 of these patients had graft-versus-host disease (GVHD) before undergoing esophagogastroduodenoscopy (EGD). All 14 patients had been taking one or more immunosuppressive agents including cyclosporine (n=10), corticosteroids (n=9), mycophenolic acid (n=6), tacrolimus (n=3), and methotrexate (n=1). Tests for CMV antigenemia were positive in 11 patients (78.6%). EGD examinations revealed esophageal (n=3), gastric (n=9), and duodenal involvement (n=6). Macroscopically, esophageal lesions by CMV infection presented as redness (n=1), erosions (n=1), and ulcers (n=1). Gastric lesions manifested as redness (n=7), erosions (n=3), exfoliated mucosa (n=2), and verrucous erosions (n=1). Mucosal appearances in the duodenum varied: redness (n=2), ulcers (n=2), multiple erosions (n=2), single erosion (n=1), edema (n=1). CMV was detected even in the intact duodenal mucosa (n=1). In conclusion, physicians must recall the relevance of CMV infection when any mucosal alterations exist in the upper gastrointestinal tract of immunosuppressed patients. |
| Keywords | cytomegalovirus duodenum esophagogastroduodenoscopy esophagus stomach |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2017-04 |
| Volume | volume71 |
| Issue | issue2 |
| Publisher | Okayama University Medical School |
| Start Page | 97 |
| End Page | 104 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2017 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 28420890 |
| Author | Iwamuro, Masaya| Okada, Hiroyuki| Harada, Keita| Kanzaki, Hiromitsu| Hori, Keisuke| Kita, Masahide| Kawano, Seiji| Kawahara, Yoshiro| Tanaka, Takehiro| Yamamoto, Kazuhide| |
|---|---|
| Published Date | 2016-12-01 |
| Publication Title | Journal of Okayama Medical Association |
| Volume | volume128 |
| Issue | issue3 |
| Content Type | Journal Article |
| Author | Gotoda, Tatsuhiro| Kawano, Seiji| Kono, Yoshiyasu| Miura, Kou| Kanzaki, Hiromitsu| Iwamuro, Masaya| Kawahara, Yoshiro| Tanaka, Takehiro| Yoshino, Tadashi| Shirakawad, Yasuhiro| Tabata, Masahiro| Tanimoto, Mitsune| Okada, Hiroyuki| |
|---|---|
| Published Date | 2016-12-01 |
| Publication Title | Journal of Okayama Medical Association |
| Volume | volume128 |
| Issue | issue3 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/AMO/55207 |
|---|---|
| FullText URL | 71_3_241.pdf |
| Author | Iwamuro, Masaya| Tanaka, Shouichi| Moritou, Yuki| Inaba, Tomoki| Higashi, Reiji| Kusumoto, Chiaki| Yunoki, Naoko| Ishikawa, Shin| Okamoto, Yuko| Kawai, Yoshinari| Kitada, Ken-ichi| Takenaka, Ryuta| Toyokawa, Tatsuya| Okada, Hiroyuki| |
| Abstract | Most gastric bezoars can be treated with endoscopic fragmentation combined with or without cola dissolution, whereas laparotomy or laparoscopic surgery is generally inevitable for small intestinal bezoars because they cause small bowel obstruction. Therefore, early diagnosis and management of gastric bezoars are necessary to prevent bezoar-induced ileus. To investigate the incidence of overlooked gastric bezoars during the initial esophagogastroduodenoscopy, we retrospectively reviewed the cases of 27 patients diagnosed with gastrointestinal bezoars. The bezoars were diagnosed using esophagogastroduodenoscopy (n=25), abdominal ultrasonography (n=1), and barium follow-through examination (n=1). Bezoars were overlooked in 9/25 patients (36.0%) during the initial endoscopy examination because the bezoars were covered with debris in the stomach. Of the 9 patients, 8 had concomitant gastric ulcers, and the other patient had gastric lymphoma. Although a computed tomography (CT) scan was performed before the second-look endoscopy in 8 of the 9 patients, the bezoars were mistaken as food debris on CT findings and were overlooked in these patients. In conclusion, gastric bezoars may not be discovered during the initial esophagogastroduodenoscopy and CT scan. In cases with debris in the stomach, second-look endoscopy is essential to detect bezoars. |
| Keywords | bezoar gastric ulcer foreign bodies phytobezoar |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2017-06 |
| Volume | volume71 |
| Issue | issue3 |
| Publisher | Okayama University Medical School |
| Start Page | 241 |
| End Page | 247 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2017 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 28655944 |
| JaLCDOI | 10.18926/AMO/55314 |
|---|---|
| FullText URL | 71_4_357.pdf |
| Author | Tomoda, Takeshi| Kato, Hironari| Mizukawa, Sho| Muro, Shinichiro| Akimoto, Yutaka| Uchida, Daisuke| Matsumoto, Kazuyuki| Yamamoto, Naoki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki| |
| Abstract | In the article by Tomoda T et al. entitled “A Multicenter, Prospective, Randomized Controlled Trial Evaluating the Efficacy of Rectal Diclofenac and Sublingual Nitroglycerin as a Combined Prophylactic Treatment for Post-ERCP Pancreatitis”, which appeared in the October 2016 issue, Vol. 70, No. 5, pp405-408, the word “nitroglycerin” should be corrected to “nitrate” throughout the manuscript. |
| Keywords | post-ERCP pancreatitis NSAIDs nitrate |
| Amo Type | Corrected and Republished Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2017-08 |
| Volume | volume71 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 357 |
| End Page | 362 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2017 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 28824193 |
| Related Url | replaces http://doi.org/10.18926/AMO/54602 |
| JaLCDOI | 10.18926/AMO/53676 |
|---|---|
| FullText URL | 69_5_301.pdf |
| Author | Seki, Anna| Iwamuro, Masaya| Yoshioka, Masao| Fujii, Nobuharu| Okada, Hiroyuki| Nose, Soichiro| Takata, Katsuyoshi| Yoshino, Tadashi| Yamamoto, Kazuhide| |
| Abstract | A 41-year-old woman was diagnosed with duodenal follicular lymphoma. She had no other lesions and was assigned to a "watch and wait" policy. Swelling of the inguinal lymph nodes appeared 45 months later, and rituximab monotherapy resulted in complete remission. However, follicular lymphoma recurred in the stomach, rectum and mesenteric and external iliac lymph nodes 81 months after the therapy. The patient received rituximab monotherapy again and has remained in complete remission in the fifteenth year after the initial diagnosis. This case suggests the usefulness of rituximab monotherapy in the long-term management of intestinal follicular lymphoma. |
| Keywords | follicular lymphoma duodenum rituximab |
| Amo Type | Case Report |
| Publication Title | Acta Medica Okayama |
| Published Date | 2015-10 |
| Volume | volume69 |
| Issue | issue5 |
| Publisher | Okayama University Medical School |
| Start Page | 301 |
| End Page | 306 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2015 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 26490027 |
| Web of Science KeyUT | 000365519600006 |
| JaLCDOI | 10.18926/AMO/59958 |
|---|---|
| FullText URL | 74_3_245.pdf |
| Author | Yamamoto, Shumpei| Takayama, Hiroshi| Shimodate, Yuichi| Takezawa, Rio| Nishimura, Naoyuki| Doi, Akira| Mouri, Hirokazu| Matsueda, Kazuhiro| Mizuno, Motowo| Okada, Hiroyuki| |
| Abstract | Antithrombotic therapy is a major risk factor for delayed bleeding after endoscopic submucosal dissection (ESD) for gastric neoplasia. A potassium-competitive acid blocker, vonoprazan, is expected to prevent delayed bleeding better than conventional proton pomp inhibitors (PPIs), but the evidence is controversial. We sought to clarify the efficacy of vonoprazan for prevention of delayed bleeding after gastric ESD in patients under antithrombotic therapy. We prospectively registered 50 patients who underwent gastric ESD while receiving antithrombotic therapy and vonoprazan in our institution between October 2017 and September 2018. The incidence of delayed bleeding was compared with that in a historical control group of 116 patients treated with conventional PPI. We also evaluated risk factors associated with delayed bleeding. Delayed bleeding was observed in 8 of 50 patients (16.0%), which was not dissimilar from the incidence in the historical control group (12.1%) (p=0.49). In the univariate analysis, age (> 70 years) (p=0.034), multiple antithrombotic drug use (p<0.01), procedure time (> 200 min) (p=0.038) and tumor size (> 40 mm) (p<0.01) were associated with delayed bleeding after gastric ESD, but vonoprazan was not (p=0.49). Vonoprazan may not be more effective than conventional PPIs in preventing delayed bleeding after gastric ESD in patients receiving antithrombotic therapy. |
| Keywords | vonoprazan endoscopic submucosal dissection antithrombotic drug gastric cancer |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2020-06 |
| Volume | volume74 |
| Issue | issue3 |
| Publisher | Okayama University Medical School |
| Start Page | 245 |
| End Page | 250 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2020 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 32577023 |
| Web of Science KeyUT | 000543363400008 |
| NAID | 120006862799 |
| JaLCDOI | 10.18926/AMO/60363 |
|---|---|
| FullText URL | 74_4_265.pdf |
| Author | Inokuchi, Toshihiro| Hiraoka, Sakiko| Yasutomi, Eriko| Oka, Shohei| Yamasaki, Yasushi| Kinugasa, Hideaki| Takahar, Masahiro| Kawano, Seiji| Harada, Keita| Okada, Hiroyuki| Kato, Jun| |
| Abstract | Determining factors that predict a favorable disease course without anti-tumor necrosis factor (TNF) agents would help establish a more cost-effective strategy for Crohn’s disease (CD). A retrospective chart review was performed for CD patients with disease durations > 10 years who had not received anti-TNF agents as first-line therapy. Patients were divided into 2 groups: those who received neither anti-TNF agents nor bowel resection (G1), and those who had received an anti-TNF agent and/or bowel resection (G2). The patient backgrounds, therapies and clinical courses were compared between the groups. A total of 62 CD patients met the inclusion criteria (males: 71%; median duration of follow-up: 19 years). Six patients were included in G1; they were significantly less likely to have upper gastrointestinal lesions than G2 (p=0.007). A multivariate analysis revealed that the significant factors for avoidance of bowel resection without anti-TNF treatment were non-stricturing and non-penetrating behaviors, and absence of upper gastrointestinal lesions at the diagnosis (hazard ratios 0.41 and 0.52; p=0.004 and 0.04, respectively). In consideration of the long treatment course of CD, patients with non-stricturing and non-penetrating behaviors and no upper gastrointestinal lesions should not be treated with anti-TNF agents as first-line therapy. |
| Keywords | Crohn’s disease anti-TNF agent upper gastrointestinal lesion bamboo joint-like appearance |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2020-08 |
| Volume | volume74 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 265 |
| End Page | 274 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2020 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 32843757 |
| Web of Science KeyUT | 000562508700001 |
| NAID | 120006880202 |
| JaLCDOI | 10.18926/AMO/60364 |
|---|---|
| FullText URL | 74_4_275.pdf |
| Author | Muro, Taiko| Nakamura, Shinichiro| Takaki, Akinobu| Onishi, Hideki| Wada, Nozomu| Yasunaka, Tetsuya| Uchida, Daisuke| Oyama, Atsushi| Adachi, Takuya| Shiraha, Hidenori| Okada, Hiroyuki| |
| Abstract | Radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC) is a promising method for controlling tumors, although it does not entirely eliminate recurrence. Oxidative stress is associated with the progression of hepatocarcinogenesis, while also acting as an anticancer response. The objective of the present study was to investigate the factors influencing post-RFA outcomes. We recruited 235 newly diagnosed HCC patients who received RFA for single tumors. The patients with recurrence were sub-grouped into early and segmental recurrence groups. The characteristics of the sub-grouped patients were evaluated, including by measuring oxidative stress marker reactive oxygen metabolites and antioxidant marker OXY-adsorbent tests. The factors associated with poor survival were a high Child-Pugh score and early recurrence within 2 years in the same segment. The patients who experienced recurrence within 2 years in the same segment showed a larger tumor diameter than did others. According to a multivariate analysis, the OXY values were also significantly low in these patients. In conclusion, maintaining the antioxidant reservoir function with a high OXY value might be necessary to prevent early recurrence within the RFA-treated segment. |
| Keywords | oxidative stress hepatocellular carcinoma recurrence, radiofrequency ablation |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2020-08 |
| Volume | volume74 |
| Issue | issue4 |
| Publisher | Okayama University Medical School |
| Start Page | 275 |
| End Page | 283 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2020 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 32843758 |
| Web of Science KeyUT | 000562508700002 |
| NAID | 120006880203 |
| Author | Iwamuro, Masaya| Urata, Haruo| Tanaka, Takehiro| Ando, Akemi| Nada, Takahiro| Kimura, Kosuke| Yamauchi, Kenji| Kusumoto, Chiaki| Otsuka, Fumio| Okada, Hiroyuki| |
|---|---|
| Published Date | 2017-02 |
| Publication Title | Acta Medica Okayama |
| Volume | volume71 |
| Issue | issue1 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/AMO/54828 |
| JaLCDOI | 10.18926/AMO/53026 |
|---|---|
| FullText URL | 68_6_369.pdf |
| Author | Iwamuro, Masaya| Miyashima, Yuichi| Yoshioka, Takahiro| Murata, Toshihiro| Miyabe, Yoshio| Kawai, Yoshinari| Urata, Haruo| Shiraha, Hidenori| Okada, Hiroyuki| Yamamoto, Kazuhide| |
| Abstract | A 67-year-old Japanese man underwent enterotomy because of enterolith ileus. Component analysis by infrared spectroscopy revealed that the enterolith was composed of a high concentration of deoxycholic acid. We further analyzed and compared the ultrastructure of the enterolith and a commercially available powdered form of deoxycholic acid by means of scanning electron microscopy and energy dispersive X-ray spectroscopy. Energy dispersive X-ray spectroscopy analysis revealed that the ratios of carbon and oxygen in the enterolith were equal to those in the deoxycholic acid powder. Scanning electron microscopy analysis showed rectangular prism-shaped particles on the surface of the enterolith. This structure was similar to that of the deoxycholic acid powder. The surgically removed enterolith had a twisted and coiled appearance. Possible mechanisms underlying the formation of this unique form are discussed. |
| Keywords | enterolith deoxycholic acid scanning electron microscopy infrared spectroscopy energy dispersive X-ray spectroscopy |
| Amo Type | Case Report |
| Publication Title | Acta Medica Okayama |
| Published Date | 2014-12 |
| Volume | volume68 |
| Issue | issue6 |
| Publisher | Okayama University Medical School |
| Start Page | 369 |
| End Page | 374 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2014 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 25519031 |
| Web of Science KeyUT | 000346882200007 |
