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Fukuda T, Yamazaki H, Miyatani Y, Sawada T, Shibuya N, Fukuo Y, Kiyohara H, Morikubo H, Tominaga K, Kakimoto K, Imai T, Yaguchi K, Yamamoto S, Ando K, Nishimata N, Yoshihara T, Andoh A, Hibi T, Matsuoka K. Recent steroid use and the relapse risk in ulcerative colitis patients with endoscopic healing. Aliment Pharmacol Ther 2024. [PMID: 38651779 DOI: 10.1111/apt.18013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/18/2023] [Accepted: 04/11/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND Endoscopic healing (EH) is a therapeutic target in ulcerative colitis (UC). However, even patients who have achieved EH relapse frequently. AIMS To investigate the association between recent steroid use and relapse risk in UC patients with EH. METHODS This multi-centre cohort study included 1212 UC patients with confirmed EH (Mayo endoscopic subscore ≤1). We excluded patients with current systemic steroid use or history of advanced therapy. We divided patients into a recent steroid group (last systemic steroid use within 1 year; n = 59) and a non-recent or steroid-naïve group (n = 1153). We followed the patients for 2 years to evaluate relapse, defined as induction of systemic steroids or advanced therapy. We used logistic regression to estimate the odds ratio (OR) of relapse. RESULTS Relapse occurred in 28.8% of the recent steroid group and 5.6% of the non-recent/steroid-naïve group (multi-variable-adjusted OR 5.53 [95% CI 2.85-10.7]). The risk of relapse decreased with time since the last steroid use: 28.8% for less than 1 year after steroid therapy, 22.9% for 1 year, 16.0% for 2 years and 7.9% beyond 3 years, approaching 4.0% in steroid-naïve patients. (ptrend <0.001). CONCLUSIONS Even for patients with UC who achieved EH, the risk of relapse remains high following recent steroid therapy. Physicians need to consider the duration since last steroid use to stratify the relapse risk in UC patients with EH.
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Affiliation(s)
- Tomohiro Fukuda
- Department of Gastroenterology, Yokohama Municipal Citizen's Hospital, Kanagawa, Japan
| | - Hajime Yamazaki
- Section of Clinical Epidemiology, Department of Community Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yusuke Miyatani
- Centre for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Tsunaki Sawada
- Department of Endoscopy, Nagoya University Hospital, Aichi, Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Yuka Fukuo
- Department of Gastroenterology, Juntendo University Nerima Hospital, Tokyo, Japan
| | - Hiroki Kiyohara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiromu Morikubo
- Department of Gastroenterology and Hepatology, Kyorin University School of Medicine, Tokyo, Japan
| | - Keiichi Tominaga
- Department of Gastroenterology, Dokkyo Medical University, Tochigi, Japan
| | - Kazuki Kakimoto
- 2nd Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Takayuki Imai
- Department of Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Katsuki Yaguchi
- Inflammatory Bowel Disease Centre, Yokohama City University Medical Centre, Kanagawa, Japan
| | - Shojiro Yamamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki Hospital, Miyazaki, Japan
| | - Katsuyoshi Ando
- Gastroenterology and Endoscopy, Division of Metabolism and Biosystemic Science, Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Nobuaki Nishimata
- Department of Gastroenterology, Sameshima Hospital, Kagoshima, Japan
| | - Takeo Yoshihara
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Akira Andoh
- Department of Medicine, Shiga University of Medical Science, Shiga, Japan
| | - Toshifumi Hibi
- Centre for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan
| | - Katsuyoshi Matsuoka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Sakura Medical Center, Chiba, Japan
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Komatsu A, Toyonaga T, Sumiyoshi N, Tanaka M, Shibuya N, Saruta M. Endoscopic healing is associated with a reduced risk of biologic treatment failure in patients with ulcerative colitis. Sci Rep 2024; 14:303. [PMID: 38168776 PMCID: PMC10761669 DOI: 10.1038/s41598-024-51208-2] [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] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 01/02/2024] [Indexed: 01/05/2024] Open
Abstract
Increasing number of patients with ulcerative colitis (UC) have received biologic treatment during the last decade. The association between endoscopic healing (EH) and biologic treatment failure remains understudied. Medical information of UC patients who started biologic treatment was retrospectively collected. EH was defined as Mayo endoscopic subscore of 0 or 1. Loss of response (LOR)-free drug continuation rate was compared between patients who achieved EH and those who did not using Kaplan-Meier estimator. Fifty-two patients received 53 biologic treatments and underwent follow-up colonoscopies within 2 years. Thirty-three patients achieved EH, all of which remained on the same treatment without LOR during the observational period. Twenty patients did not achieve EH, 8 of which ultimately discontinued the treatment due to LOR to biologic agents. Kaplan-Meier estimator found a significantly lower drug continuation rate in patients without EH (p < 0.001; log-rank test). A Cox regression analysis identified EH as an independent factor associated with a reduced risk of LOR-related biologic treatment failure irrespective of the types of biologic agents (Hazard Ratio = 0.0324, p < 0.001). EH within 2 years is associated with a reduced risk of LOR-related biologic treatment failure in patients with UC.
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Affiliation(s)
- Akira Komatsu
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan
| | - Takahiko Toyonaga
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan.
| | - Natsuki Sumiyoshi
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan
| | - Miho Tanaka
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan
| | - Naoki Shibuya
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Saruta
- Department of Gastroenterology and Hepatology, The Jikei University School of Medicine, Tokyo, Japan
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Miyazaki R, Sakurai T, Shimada M, Iwashita Y, Shibuya N, Akita Y, Miyashita H, Maruyama Y, Saruta M. Correction: Bowel frequency (night) and urgent defecation are improved by budesonide foam in patients with ulcerative colitis: a retrospective observational study. BMC Gastroenterol 2022; 22:397. [PMID: 36008754 PMCID: PMC9413911 DOI: 10.1186/s12876-022-02445-0] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Ryosuke Miyazaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Toshiyuki Sakurai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Mariko Shimada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yuko Iwashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yoshihiro Akita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Haruna Miyashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yuki Maruyama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan.
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Miyazaki R, Sakurai T, Shimada M, Iwashita Y, Shibuya N, Akita Y, Miyashita H, Maruyama Y, Saruta M. Bowel frequency (night) and urgent defecation are improved by budesonide foam in patients with ulcerative colitis: a retrospective observational study. BMC Gastroenterol 2022; 22:310. [PMID: 35751039 PMCID: PMC9233394 DOI: 10.1186/s12876-022-02388-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/16/2022] [Indexed: 01/14/2023] Open
Abstract
Introduction Patients with ulcerative colitis (UC) are known to have a significantly poor quality of life due to bowel frequency (night) and urgent defecation. Budesonide foam is a topical medication that was approved in Japan in 2017 for the treatment of UC. However, its efficacy in the treatment of bowel frequency (night) or urgent defecation is unknown. This study aimed to explore the efficacy of budesonide foam for the alleviation of these symptoms. Methods UC patients who received budesonide foam between December 2017 and January 2020 at the Jikei University School of Medicine in Tokyo were enrolled. The simple clinical colitis activity index (SCCAI) was evaluated at the start of budesonide foam treatment and 2 and 6 weeks later in patients who initially scored ≥ 1 for bowel frequency (night) and urgent defecation, respectively. We also studied the effect of budesonide foam on remaining symptoms in patients who had used 5-aminosalicylic acid (5-ASA) topical treatment, those with SCCAI ≥ 3, and those in remission with residual symptoms (SCCAI 1 or 2). Results Of the 233 enrolled patients, 102 were eligible for the study. In 36 patients with bowel frequency (night) treated with budesonide foam were significantly effective, score in SCCAI decreased from 1.17 ± 0.45 at baseline to 0.53 ± 0.61 at week 2 (p < 0.0001) and 0.17 ± 0.38 at week 6 (p < 0.0001). In 45 patients with urgent defecation score in SCCAI decreased significantly from 1.33 ± 0.52 at baseline to 0.44 ± 0.59 at week 2 (p < 0.0001) and 0.22 ± 0.40 at week 6 (p < 0.0001). Of 22 patients who switched from topical 5-ASA administration to budesonide foam, nine at week 2 (41%) and 11 (50%) at week 6 were improved with no symptoms, and there were no cases of worsened symptoms. No severe side effects associated with budesonide foam were observed. Conclusion Budesonide foam administration significantly improves both bowel frequency (night) and urgent defecation-related UC activity and is also effective for the patients who were refractory to topical 5-ASA administration.
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Affiliation(s)
- Ryosuke Miyazaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Toshiyuki Sakurai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Mariko Shimada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yuko Iwashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yoshihiro Akita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Haruna Miyashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Yuki Maruyama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-shinbashi, Minato-ku, Tokyo, 105-8461, Japan.
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Miyazaki R, Sakurai T, Iwashita Y, Shimada M, Shibuya N, Akita Y, Miyashita H, Maruyama Y, Sawada R, Toyonaga T, Takakura K, Saruta M. Characteristics and Endoscopic Classification of Ulcerative Lesions Affecting the Ileocecal Valve. Dig Dis 2022; 40:239-245. [PMID: 34000716 DOI: 10.1159/000516975] [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: 09/28/2020] [Accepted: 04/29/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVES The aim of this study was to propose an endoscopic classification system for ulcerative lesions on the ileocecal valve and investigate its relevance to the underlying etiology. METHODS Among the 60,325 patients who underwent colonoscopy at our hospital from January 2006 to December 2018, patients with ulcerative lesions on the ileocecal valve were included. The following data were obtained using the hospital's medical records: sex, age, clinical diagnosis, laboratory data, and endoscopic and histological findings. Patients who have ulcerative colitis and who were not evaluated by histological examination were excluded. Ulcerative lesions on the ileocecal valve were classified into 3 groups according to their endoscopic appearance: small shallow ulcerative lesions without edematous change (group A), lateral spreading shallow ulcerative lesions with edematous change (group B), and deep deformed ulcerative lesions (group C). The association between this endoscopic classification and its clinical diagnosis, clinical course, and the interobserver reliability were evaluated. RESULTS Of 72 patients who were eligible for analysis, 18 were assigned to group A, 9 to group B, and 45 to group C. Infectious enteritis was mainly assigned to group A (group A, 12; group B, none; and group C, 6; p < 0.0001), inflammatory bowel disease was mainly assigned to group C (group A, none; group B, 5; and group C, 35; p < 0.0001), and malignant tumor was assigned to group C only. Interobserver reliability was extremely high among the 3 examining doctors (kappa value 0.7-0.8). CONCLUSION Endoscopic classification was divided into 3 groups for ulcerative lesions on the ileocecal valve, and this system could be beneficial for presuming their clinical diagnoses.
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Affiliation(s)
- Ryosuke Miyazaki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Toshiyuki Sakurai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuko Iwashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Mariko Shimada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoshihiro Akita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Haruna Miyashita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuki Maruyama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Ryoichi Sawada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Takahiko Toyonaga
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kazuki Takakura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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Shibuya N, Higashiyama M, Akita Y, Shirakabe K, Ito S, Nishii S, Mizoguchi A, Inaba K, Tanemoto R, Sugihara N, Hanawa Y, Wada A, Horiuchi K, Yoshikawa K, Kurihara C, Okada Y, Watanabe C, Komoto S, Tomita K, Saruta M, Hokari R. Deoxycholic acid enhancement of lymphocyte migration through direct interaction with the intestinal vascular endothelium. J Gastroenterol Hepatol 2021; 36:2523-2530. [PMID: 33783040 DOI: 10.1111/jgh.15509] [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] [Received: 03/12/2020] [Revised: 02/04/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM The small intestine plays a central role in gut immunity, and enhanced lymphocyte migration is involved in the pathophysiology of various enteropathy. Bile acid (BA) is closely related to lipid metabolism and gut microbiota and essential for gut homeostasis. However, the effects of BA on gut immunity have not been studied in detail, especially on the small intestine and lymphocyte migration. Therefore, we aimed to investigate the effect of BA on small intestinal lymphocyte microcirculation. METHODS The effect of deoxycholic acid (DCA), taurocholic acid (tCA), or cholic acid (CA) on the indomethacin (IND)-induced small intestinal enteropathy in mice was investigated. Lymphocyte movements were evaluated after exposure to BA using intravital microscopy. The effects of BA on surface expression of adhesion molecules on the vascular endothelium and lymphocytes through BA receptors were examined in vitro. RESULTS IND-induced small intestinal enteropathy was histologically aggravated by DCA treatment alone. The expression of adhesion molecules ICAM-1 and VCAM-1 was significantly enhanced by DCA. Exposure to DCA increased lymphocyte adhesion in the microvessels of the ileum, which was partially blocked by anti-α4β1 integrin antibody in vivo. The expression of ICAM-1 and VCAM-1 was significantly enhanced by DCA in vitro, which was partially suppressed by the sphingosine-1-phosphate receptor 2 (S1PR2) antagonist. The S1PR2 antagonist significantly ameliorated IND-induced and DCA-exaggerated small intestinal injury. CONCLUSION DCA exacerbated IND-induced small intestinal enteropathy. DCA directly acts on the vascular endothelium and enhances the expression levels of adhesion molecules partially via S1PR2, leading to enhanced small intestinal lymphocyte migration.
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Affiliation(s)
- Naoki Shibuya
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | | | - Yoshihiro Akita
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazuhiko Shirakabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Suguru Ito
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shin Nishii
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akinori Mizoguchi
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kenichi Inaba
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Rina Tanemoto
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Nao Sugihara
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshinori Hanawa
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akinori Wada
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazuki Horiuchi
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kenichi Yoshikawa
- Department of General Internal Medicine, Eiseikai Minamitama Hospital, Tokyo, Japan
| | - Chie Kurihara
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshikiyo Okada
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Chikako Watanabe
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shunsuke Komoto
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kengo Tomita
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Ryota Hokari
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
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Horiuchi K, Higashiyama M, Kurihara C, Matsumura K, Tanemoto R, Ito S, Mizoguchi A, Nishii S, Wada A, Inaba K, Sugihara N, Hanawa Y, Shibuya N, Okada Y, Watanabe C, Komoto S, Tomita K, Hokari R. Intestinal inflammations increase efflux of innate lymphoid cells from the intestinal mucosa to the mesenteric lymph nodes through lymph-collecting ducts. Microcirculation 2021; 28:e12694. [PMID: 33742518 DOI: 10.1111/micc.12694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 02/15/2021] [Accepted: 03/13/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Innate lymphoid cells (ILCs) are abundant in the intestinal mucosa, forming boundaries externally. Herein, ILCs were directly obtained from intestinal lymph using a lymph fistula rat model and analyzed under physiological and pathological conditions. METHODS Thoracic duct (TD) lymphocytes were collected by cannulation with/without preceded mesenteric lymphadenectomy, which were comparable to lymphocytes flowing through mesenteric lymphatic vessels (MLVs) or TD, respectively. The collected ILCs were classified according to gene transcription factors and analyzed by flow cytometry. The effect of IL-25 or indomethacin was studied. RESULTS The proportion of total ILCs in the MLVs (MLV-ILCs) was significantly higher than that in TD (TD-ILCs, 0.01% vs. 0.003%, respectively). Physiologically, there were several significant differences in the MLV-ILCs compared with TD-ILCs, including the proportion of ILC2 (42.3% vs. 70.9%) and ILC3 (33.3% vs. 13.8%), and the proportion of α4-integrin-positive cells (36.8% vs. 0.3%). IL-25 significantly increased the proportion of MLV-ILC2 after 3 days. Indomethacin-induced intestinal injury increased the proportion of MLV-ILC3 in the early phase within 12 h. CONCLUSION Intestinal ILCs were found to migrate through MLVs. The altered mobilization of MLV-ILCs after stimuli suggests that ILCs play an important role in regulating the immune responses at the secondary lymph nodes.
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Affiliation(s)
- Kazuki Horiuchi
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Masaaki Higashiyama
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Chie Kurihara
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Kouji Matsumura
- Laboratory of Cell Analysis, Central Research Institute, National Defense Medical College, Saitama, Japan
| | - Rina Tanemoto
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Suguru Ito
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Akinori Mizoguchi
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Shin Nishii
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Akinori Wada
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Kenichi Inaba
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Nao Sugihara
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Yoshinori Hanawa
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Naoki Shibuya
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Yoshikiyo Okada
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Chikako Watanabe
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Shunsuke Komoto
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Kengo Tomita
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Ryota Hokari
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
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Shirakabe K, Higashiyama M, Shibuya N, Horiuchi K, Saruta M, Hokari R. Microscopic Observation of Lymphocyte Dynamics in Rat Peyer's Patches. J Vis Exp 2020. [PMID: 32658195 DOI: 10.3791/61568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Naïve lymphocytes recirculate from the blood to the lymphoid tissues under physiological condition and it is commonly recognized as an important phenomenon in the gut immunity. The stroma of secondary lymphoid organs, such as Peyer's patches (PPs) or mesenteric lymph nodes, are where naïve lymphocytes sense antigens. Naïve lymphocytes circulate through the bloodstream to reach high endothelial venules, the portal of entry into PPs. Some immunomodulators are estimated to influence lymphocyte migration, but the precise evaluation of microcirculation dynamics is very difficult, and establishing a method to observe lymphocyte migration in vivo can contribute to the clarification of the precise mechanisms. We refined the method of collecting lymphocytes from the lymph duct and observing the detailed dynamics of gut-tropic lymphocytes in rat PPs. We chose confocal laser scanning microscopy to observe rat PPs in vivo and recorded it using time-lapse photography. We can now obtain clear images that can contribute to the analysis of lymphocyte dynamics.
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Affiliation(s)
- Kazuhiko Shirakabe
- Department of internal medicine, National Defense Medical College; Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine;
| | | | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine
| | - Kazuki Horiuchi
- Department of internal medicine, National Defense Medical College
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jikei University School of Medicine
| | - Ryota Hokari
- Department of internal medicine, National Defense Medical College
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9
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Shibuya N, Kakeji Y, Shimono Y. MicroRNA-93 targets WASF3 and functions as a metastasis suppressor in breast cancer. Cancer Sci 2020; 111:2093-2103. [PMID: 32307765 PMCID: PMC7293106 DOI: 10.1111/cas.14423] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 03/23/2020] [Accepted: 04/07/2020] [Indexed: 02/06/2023] Open
Abstract
Cancer cells with cancer stem cell (CSC) properties initiate both primary tumor formation and metastases at distant sites. Acquisition of CSC properties is highly associated with epigenetic alterations, including those mediated by microRNAs (miRNAs). We have previously established the breast cancer patient‐derived tumor xenograft (PDX) mouse model in which CSC marker CD44+ cancer cells formed spontaneous microscopic metastases in the liver. In this PDX mouse, we found that the expression levels of 3 miRNAs (miR‐25, miR‐93, and miR‐106b) in the miR‐106b‐25 cluster were much lower in the CD44+ human cancer cells metastasized to the liver than those at the primary site. Constitutive overexpression of miR‐93 suppressed invasive ability and 3D‐organoid formation capacity of breast cancer cells in vitro and significantly suppressed their metastatic ability to the liver in vivo. Wiskott‐Aldrich syndrome protein family member 3 (WASF3), a regulator of both cytoskeleton remodeling and CSC properties, was identified as a functional target of miR‐93: overexpression of miR‐93 reduced the protein level of WASF3 in breast cancer cells and WASF3 rescued the miR‐93‐mediated suppression of breast cancer cell invasion. These findings suggest that miR‐93 functions as a metastasis suppressor by suppressing both invasion ability and CSC properties in breast cancers.
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Affiliation(s)
- Naoki Shibuya
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Gastrointestinal Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshihiro Kakeji
- Division of Gastrointestinal Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yohei Shimono
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Department of Biochemistry, Fujita Health University School of Medicine, Toyoake, Japan
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10
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Takajo T, Tomita K, Tsuchihashi H, Enomoto S, Tanichi M, Toda H, Okada Y, Furuhashi H, Sugihara N, Wada A, Horiuchi K, Inaba K, Hanawa Y, Shibuya N, Shirakabe K, Higashiyama M, Kurihara C, Watanabe C, Komoto S, Nagao S, Kimura K, Miura S, Shimizu K, Hokari R. Depression Promotes the Onset of Irritable Bowel Syndrome through Unique Dysbiosis in Rats. Gut Liver 2020; 13:325-332. [PMID: 30602220 PMCID: PMC6529174 DOI: 10.5009/gnl18296] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/26/2018] [Accepted: 09/05/2018] [Indexed: 12/25/2022] Open
Abstract
Background/Aims Although studies using conventional animal models have shown that specific stressors cause irritable bowel syndrome (IBS), it is unclear whether depression itself causes IBS. Our aim was to establish a rat model to determine if depression itself promotes the onset of IBS and to elucidate the role of gut microbiota in brain-gut axis pathogenesis during coincident depression and IBS. Methods Rat models of depression were induced using our shuttle box method of learned helplessness. Visceral hypersensitivity was evaluated by colorectal distension (CRD) to diagnose IBS. Gut microbiota compositions were analyzed using high-throughput sequencing. In the subanalysis of rats without depression-like symptoms, rats with posttraumatic stress disorder (PTSD) were also examined. Results The threshold value of CRD in depressed rats was significantly lower than that in control rats. Microbial community analysis of cecal microbiota showed that the relative abundance of Clostridiales incertae sedis, the most prevalent microbe, was significantly lower in depressed rats than in control rats. The distribution pattern of the microbiota clearly differed between depressed rats and control rats. Neither visceral hypersensitivity nor the composition of gut microbiota was altered in rats with PTSD-like phenotypes. Conclusions Our rat model of depression is useful for clarifying the effect of depression on IBS and suggests that depression itself, rather than specific stressors, promotes the onset of IBS. Further, we provided evidence that various psychiatric diseases, viz., depression and PTSD, are associated with unique gut microbiota profiles, which could differentially affect the onset and progression of coincident IBS.
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Affiliation(s)
- Takeshi Takajo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kengo Tomita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Hanae Tsuchihashi
- Microbiome Group, Basic Microbiology Research Department, Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd., Hachiouji, Japan
| | - Shingo Enomoto
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Japan
| | - Masaaki Tanichi
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Japan
| | - Hiroyuki Toda
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Japan
| | - Yoshikiyo Okada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Hirotaka Furuhashi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Nao Sugihara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akinori Wada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazuki Horiuchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kenichi Inaba
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshinori Hanawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazuhiko Shirakabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Masaaki Higashiyama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Chie Kurihara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Chikako Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shunsuke Komoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shigeaki Nagao
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Katsunori Kimura
- Microbiome Group, Basic Microbiology Research Department, Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd., Hachiouji, Japan
| | - Soichiro Miura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan.,International University of Health and Welfare Graduate School, Tokyo, Japan
| | - Kunio Shimizu
- Division of Behavioral Sciences, National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Ryota Hokari
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
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11
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Higashiyama M, Tomita K, Sugihara N, Nakashima H, Furuhashi H, Nishikawa M, Inaba K, Wada A, Horiuchi K, Hanawa Y, Shibuya N, Kurihara C, Okada Y, Nishii S, Mizoguchi A, Hozumi H, Watanabe C, Komoto S, Yamamoto J, Seki S, Miura S, Hokari R. Chitinase 3-like 1 deficiency ameliorates liver fibrosis by promoting hepatic macrophage apoptosis. Hepatol Res 2019; 49:1316-1328. [PMID: 31250532 PMCID: PMC6916176 DOI: 10.1111/hepr.13396] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/14/2019] [Accepted: 06/24/2019] [Indexed: 12/11/2022]
Abstract
AIM Chitinase 3-like 1 (CHI3L1), an 18-glycosyl hydrolase-related molecule, is a member of the enzymatically inactive chitinase-like protein family. Serum levels of CHI3L1 are strongly correlated with hepatic fibrosis progression during many liver diseases. Therefore, this protein could be involved in the development of hepatic fibrosis pathology; however, its role has not been elucidated. We aimed to elucidate its role in the pathophysiology of liver fibrosis. METHODS Chitinase 3-like 1-deficient (Chi3l1-/- ) mice were given carbon tetrachloride twice per week for 4 weeks or fed a methionine choline-deficient diet for 12 weeks to generate mouse liver fibrosis models. Human fibrotic liver tissues were also examined immunohistochemically. RESULTS In human and mouse fibrotic livers, CHI3L1 expression was mainly localized to hepatic macrophages, and the intrahepatic accumulation of CHI3L1+ macrophages was significantly enhanced compared to that in control livers. In the two mouse models, hepatic fibrosis was significantly ameliorated in Chi3l1-/- mice compared to that in wild-type mice, which was dependent on hepatic macrophages. The accumulation and activation of hepatic macrophages was also significantly suppressed in Chi3l1-/- mice compared to that in wild-type mice. Furthermore, apoptotic hepatic macrophages were significantly increased in Chi3l1-/- mice. Chitinase 3-like 1 was found to inhibit hepatic macrophage apoptosis by suppressing Fas expression and activating Akt signaling in an autocrine manner, which resulted in hepatic macrophage accumulation and activation, exaggerating liver fibrosis. CONCLUSIONS Chitinase 3-like 1 exacerbates liver fibrosis progression by suppressing apoptosis in hepatic macrophages. Therefore, this might be a potential therapeutic target for the treatment of liver fibrosis.
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Affiliation(s)
- Masaaki Higashiyama
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Kengo Tomita
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Nao Sugihara
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | | | - Hirotaka Furuhashi
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Makoto Nishikawa
- Departments of SurgeryNational Defense Medical CollegeTokorozawa
| | - Kenichi Inaba
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Akinori Wada
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Kazuki Horiuchi
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Yoshinori Hanawa
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Chie Kurihara
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Yoshikiyo Okada
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Shin Nishii
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Akinori Mizoguchi
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Hideaki Hozumi
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Chikako Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Shunsuke Komoto
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
| | - Junji Yamamoto
- Departments of SurgeryNational Defense Medical CollegeTokorozawa
| | - Shuhji Seki
- Departments of Immunology and MicrobiologyTokorozawa
| | - Soichiro Miura
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa,International University of Health and Welfare Graduate SchoolTokyoJapan
| | - Ryota Hokari
- Division of Gastroenterology and Hepatology, Department of Internal MedicineTokorozawa
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12
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Teratani T, Tomita K, Furuhashi H, Sugihara N, Higashiyama M, Nishikawa M, Irie R, Takajo T, Wada A, Horiuchi K, Inaba K, Hanawa Y, Shibuya N, Okada Y, Kurihara C, Nishii S, Mizoguchi A, Hozumi H, Watanabe C, Komoto S, Nagao S, Yamamoto J, Miura S, Hokari R, Kanai T. Lipoprotein Lipase Up-regulation in Hepatic Stellate Cells Exacerbates Liver Fibrosis in Nonalcoholic Steatohepatitis in Mice. Hepatol Commun 2019; 3:1098-1112. [PMID: 31388630 PMCID: PMC6671781 DOI: 10.1002/hep4.1383] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/09/2019] [Indexed: 12/14/2022] Open
Abstract
Lipoprotein lipase (LPL) plays a central role in incorporating plasma lipids into tissues and regulates lipid metabolism and energy balance in the human body. Conversely, LPL expression is almost absent in normal adult livers. Therefore, its physiological role in the liver remains unknown. We aimed to elucidate the role of LPL in the pathophysiology of nonalcoholic steatohepatitis (NASH), a hepatic manifestation of obesity. Hepatic stellate cell (HSC)–specific LPL‐knockout (LplHSC‐KO) mice, LPL‐floxed (Lplfl/fl) mice, or double‐mutant toll‐like receptor 4–deficient (Tlr4−/−) LplHSC‐KO mice were fed a high‐fat/high‐cholesterol diet for 4 weeks to establish the nonalcoholic fatty liver model or an high‐fat/high‐cholesterol diet for 24 weeks to establish the NASH model. Human samples, derived from patients with nonalcoholic fatty liver disease, were also examined. In human and mouse NASH livers, serum obesity‐related factors, such as free fatty acid, leptin, and interleukin‐6, dramatically increased the expression of LPL, specifically in HSCs through signal transducer and activator of transcription 3 signaling, as opposed to that in hepatocytes or hepatic macrophages. In the NASH mouse model, liver fibrosis was significantly reduced in LplHSC‐KO mice compared with that in Lplfl/fl mice. Nonenzymatic LPL‐mediated cholesterol uptake from serum lipoproteins enhanced the accumulation of free cholesterol in HSCs, which amplified TLR4 signaling, resulting in the activation of HSCs and progression of hepatic fibrosis in NASH. Conclusion: The present study reveals the pathophysiological role of LPL in the liver, and furthermore, clarifies the pathophysiology in which obesity, as a background factor, exacerbates NASH. The LPL‐mediated HSC activation pathway could be a promising therapeutic target for treating liver fibrosis in NASH.
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Affiliation(s)
- Toshiaki Teratani
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Shinjuku-ku Tokyo Japan
| | - Kengo Tomita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Hirotaka Furuhashi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Nao Sugihara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Masaaki Higashiyama
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Makoto Nishikawa
- Department of Surgery National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Rie Irie
- Department of Pathology National Center for Child Health and Development Setagaya-ku Tokyo Japan
| | - Takeshi Takajo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Akinori Wada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Kazuki Horiuchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Kenichi Inaba
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Yoshinori Hanawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Naoki Shibuya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Yoshikiyo Okada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Chie Kurihara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Shin Nishii
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Akinori Mizoguchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Hideaki Hozumi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Chikako Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Shunsuke Komoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Shigeaki Nagao
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Junji Yamamoto
- Department of Pathology National Center for Child Health and Development Setagaya-ku Tokyo Japan
| | - Soichiro Miura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan.,International University of Health and Welfare Graduate School Minato-ku Tokyo Japan
| | - Ryota Hokari
- Division of Gastroenterology and Hepatology, Department of Internal Medicine National Defense Medical College Tokorozawa-shi Saitama Japan
| | - Tananori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine Keio University School of Medicine Shinjuku-ku Tokyo Japan
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13
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Mukohyama J, Shimono Y, Dalerba P, Isobe T, Hu Q, Sahoo D, Shibuya N, Minami H, Mimori K, Kakeji Y, Suzuki A. Abstract 488: Epigenetic regulation of colorectal cancer stem cells by the miR-221/QKI5 axis. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Colorectal cancer stem cells (CSCs) have extensive abilities to initiate tumor formation, and are responsible for the progression and metastasis of colorectal cancers. MicroRNAs (miRNAs) are non-coding RNAs of 18-24 nucleotides that post-transcriptionally regulate expression of multiple genes by targeting their 3'untranslated regions (UTRs). miRNAs regulate various biological processes, and function as important regulators of CSC properties.
miR-221 is one of the oncogenic miRNAs frequently upregulated in human cancers including colorectal cancer. Previous studies have shown that miR-221 enhances proliferation, migration, and invasion of cancer cells. However, the role of miR-221 in human colorectal CSCs is not fully elucidated. In this study, we analyzed the colorectal CSCs directly isolated from the surgical specimens of colorectal cancer patients to explore the role of miR-221 in CSCs.
Expression profile of 754 miRNAs in the CD44+/EpCAM+ CSC and non-tumorigenic cancer cell (NTC) populations was analyzed by multiplex semi-quantitative PCR. Prognostic impact of miR-221 expression in CSCs was analyzed using the TCGA database. Target genes of miR-221 were validated by luciferase reporter assays and Western blot experiments. The roles of miR-221 and its target gene QKI-5 in colorectal CSCs were evaluated by organoid and xenotransplantation assays.
Comparison of the expression levels of 754 miRNAs in the CSCs and NTCs resulted in the identification of 10 miRNAs upregulated or downregulated in CSCs compared to NTCs. Among them, miR-221 was most highly expressed in CSCs and its expression level was very low in NTCs and human normal colon epithelial cells of human colorectal cancer specimens (n=6, p<0.05). The estimated 5-year overall survival rate for miR-221high patients (n=177) was significantly lower than miR-221low ones (n=116) in TCGA dataset (54.6% vs. 73.6%; p<0.001). The TNM stages at diagnosis were not significantly associated with the expression level of miR-221. In a multivariate analysis, miR-221 expression were significantly associated with overall survival (p=0.009). miR-221 targeted an RNA binding protein (RBP) QKI-5 and suppressed its expression. Knockdown of miR-221 in human colorectal cancer patient-derived xenograft cells suppressed the organoid formation in vitro in a QKI-5-suppression-dependent manner, and tumor formation initiated by colorectal CSCs in vivo (n=6, p=0.015 ).
Our results suggest that the miR-221/QKI5 axis plays important roles in the regulation of CSC properties in human colorectal cancers. Because miR-221 was preferentially and highly upregulated in human colorectal CSCs, but not in normal stem/progenitor cells, it is possible that miR-221 will be a biomarker that reflects amount and/or activity of CSCs in colorectal cancers and an attractive target to selectively attach colorectal CSCs by avoiding damages on their normal counterparts.
Citation Format: Junko Mukohyama, Yohei Shimono, Piero Dalerba, Taichi Isobe, Qingjiang Hu, Debashis Sahoo, Naoki Shibuya, Hironobu Minami, Koshi Mimori, Yoshihiro Kakeji, Akira Suzuki. Epigenetic regulation of colorectal cancer stem cells by the miR-221/QKI5 axis [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 488.
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Affiliation(s)
| | - Yohei Shimono
- 1Kobe University Graduate School of Medicine, Kobe, Japan
| | | | | | | | | | - Naoki Shibuya
- 1Kobe University Graduate School of Medicine, Kobe, Japan
| | | | | | | | - Akira Suzuki
- 1Kobe University Graduate School of Medicine, Kobe, Japan
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14
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Kondo H, Shimono Y, Mukohyama J, Tanaka Y, Shibuya N, Minami H, Kakeji Y, Suzuki A. Discordance of MCM7 mRNA and its Intronic MicroRNA Levels Under Hypoxia. Anticancer Res 2017; 37:3885-3890. [PMID: 28668890 DOI: 10.21873/anticanres.11769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 05/26/2017] [Accepted: 06/29/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Intronic microRNAs (miRNAs) are considered to be transcribed using their host gene promoter. However, about one third of intronic miRNAs are predicted to have independent promoter elements. MATERIALS AND METHODS Human breast cancer cells were cultured under normoxia or hypoxia, and expression levels of intronic miR-106b-25 cluster miRNAs and their host gene minichromosome maintenance complex component 7 (MCM7) transcripts were analyzed by semi-quantitative polymerase chain reaction. The putative promoter element of miR-106b-25 cluster was analyzed by chromatin immunoprecipitation and luciferase assays. RESULTS Exposure to hypoxia reduced the expression of MCM7 mRNA and a primary transcript of miR-106b-25 cluster, but did not affect that of mature miRNAs. The putative promoter element of miR-106b-25 cluster was not bound by hypoxia-inducible factor 1-alpha (HIF1-α), and was not activated under hypoxia. CONCLUSION Maintenance of miR-106b-25 cluster miRNA levels under hypoxia was not caused by the activation of an independent promoter element.
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Affiliation(s)
- Hiroki Kondo
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yohei Shimono
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan .,Division of Medical Oncology/Hematology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Junko Mukohyama
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Gastrointestinal Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuteru Tanaka
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Naoki Shibuya
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Gastrointestinal Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hironobu Minami
- Division of Medical Oncology/Hematology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoshihiro Kakeji
- Division of Gastrointestinal Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Akira Suzuki
- Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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15
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Komeno Y, Shibuya N, Uryu H, Yamada H, Toda T, Shibasaki M, Kunishima S, Iihara K, Ryu T. Splenic Marginal Zone Lymphoma with Acquired von Willebrand Syndrome Diagnosed via Splenic Bleeding. Intern Med 2017; 56:557-562. [PMID: 28250305 PMCID: PMC5399210 DOI: 10.2169/internalmedicine.56.7258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
An 85-year-old woman underwent emergent splenectomy due to left abdominal pain and active bleeding in a massively enlarged spleen. The histological diagnosis was splenic marginal zone lymphoma (SMZL). A prolonged activated partial thromboplastin time (APTT) was noted, and additional tests led to the diagnosis of type 2A-like acquired von Willebrand syndrome (AVWS). An APTT cross mixing test ruled out the presence of inhibitors. She received eight courses of rituximab monotherapy. The coagulation data showed no improvement, possibly because the lymphoma showed a poor response to the treatment. AVWS rarely causes bleeding in solid organs. This is the first case of SMZL with AVWS diagnosed via splenic bleeding.
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Affiliation(s)
- Yukiko Komeno
- Department of Hematology, Japan Community Healthcare Organization (JCHO) Tokyo Yamate Medical Center, Japan
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Ishizuka M, Nagata H, Takagi K, Iwasaki Y, Shibuya N, Kubota K. MON-PP001: C-Reactive Protein to Albumin Ratio is Useful for Predicting Postoperative Survival of Patients Undergoing Colorectal Cancer Surgery. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30433-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Utsunomiya S, Shibuya N, Yamaki M, Sasamoto R, Aoyama H. SU-E-T-392: A Sensitivity Analysis for Evaluating Dosimetric Impact of MLC Modeling Parameter Accuracy On IMRT Treatment Plans. Med Phys 2014. [DOI: 10.1118/1.4888725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Sadahiro R, Suzuki A, Enokido M, Matsumoto Y, Shibuya N, Kamata M, Goto K, Otani K. Relationship between leukocyte telomere length and personality traits in healthy subjects. Eur Psychiatry 2014; 30:291-5. [PMID: 24768472 DOI: 10.1016/j.eurpsy.2014.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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] [Received: 02/10/2014] [Accepted: 03/23/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND It has been shown that certain personality traits are related to mortality and disease morbidity, but the biological mechanism linking them remains unclear. Telomeres are tandem repeat DNA sequences located at the ends of chromosomes, and shorter telomere length is a predictor of mortality and late-life disease morbidity. Thus, it is possible that personality traits influence telomere length. In the present study, we examined the relationship of leukocyte telomere length with personality traits in healthy subjects. SUBJECTS AND METHODS The subjects were 209 unrelated healthy Japanese who were recruited from medical students at 4th-5th grade. Assessment of personality traits was performed by the Revised NEO Personality Inventory (NEO-PI-R) and the Temperament and Character Inventory (TCI). Leukocyte relative telomere length was determined by a quantitative real-time PCR method for a ratio of telomere/single copy gene. RESULTS In the stepwise multiple regression analysis, shorter telomere length was related to lower scores of neuroticism (P<0.01) and conscientiousness (P<0.05) of the NEO-PI-R, and lower scores of harm avoidance (P<0.05) and reward dependence (P<0.05) of the TCI. CONCLUSIONS The present study suggests that leukocyte telomere length is associated with some personality traits, and this association may be implicated in the relationship between personality traits and mortality.
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Affiliation(s)
- R Sadahiro
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - A Suzuki
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan.
| | - M Enokido
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - Y Matsumoto
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - N Shibuya
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - M Kamata
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - K Goto
- Department of Anatomy and Cell Biology, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
| | - K Otani
- Department of Psychiatry, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata 990-9585, Japan
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Sadahiro R, Suzuki A, Masanori E, Matsumoto Y, Shibuya N, Kamata M, Otani K. 940 – Association between leukocyte telomere length and personality traits. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76091-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Masanori E, Suzuki A, Sadahiro R, Matsumoto Y, Shibuya N, Kamata M, Otani K. 945 – Association study between the c3435t polymorphism of the multidrug resistance 1 (mdr1) and interpersonal sensitivity. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76094-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Shibuya N, Suzuki A, Matsumoto Y, Sadahiro R, Kamata M, Masanori E, Otani K. 944 – Involvement of the bdnf val66met polymorphism and parental rearing in formation of interpersonal sensitivity. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76093-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Suzuki A, Matsumoto Y, Shibuya N, Sadahiro R, Kamata M, Goto K, Otani K. Interaction effects between the brain-derived neurotrophic factor Val66Met polymorphism and parental rearing on personality traits in healthy subjects. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72522-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
AimsThere is a growing body of data suggesting the gene-environment interaction in the characterization of personality traits, but variation in ordinary parental rearing among environmental factors has not been focused yet. We examined the effects of the interaction between the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism and parental rearing on personality traits.MethodsSubjects were 710 Japanese healthy volunteers. Perceived parental rearing was assessed by the Parental Bonding Instrument (PBI), which consists of the care and protection factors. Personality assessment was performed by the Temperament and Character Inventory (TCI), which has 7 dimensions, i.e., novelty seeking, harm avoidance, reward dependence, persistence, self-directedness, cooperativeness, and self-transcendence. The BDNF Val66Met polymorphism was detected by the PCR-RFLP method.ResultsParental rearing has significant main effects on all TCI dimensions except novelty seeking, while no significant main effects of the BDNF genotype on the TCI scores were found. The interaction between the BDNF genotype and maternal care of the PBI had significant effects on harm avoidance and self-directedness of the TCI. Post-hoc analyses showed that decreased maternal care was correlated with increased harm avoidance and decreased self-directedness in most of the genotype groups, and for both personality traits the correlation was highest in the Met/Met genotype and lowest in the Val/Val genotype and that for the Val/Met genotype was in between the two values.ConclusionThe present study suggests that the BDNF Val66Met polymorphism moderates the effects of parenting rearing, especially maternal care, on harm avoidance and self-directedness in healthy subjects.
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Kamata M, Suzuki A, Matsumoto Y, Shibuya N, Togashi H, Otani K. THE -1021C/T polymorphism of the dopamine-B-hydroxylase (DBH) gene promoter affects personality traits in healthy subjects. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72512-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
IntroductionDopamine and norepinephrine are implicated in the characterization of personality traits. Dopamine-β-hydroxylase (DBH) is the enzyme responsible for conversion of dopamine to norepinephrine. Previous studies have shown that the -1021C/T polymorphism of the DBH gene promoter influences plasma DBH activity. Few studies investigated the association between this polymorphism and personality traits.AimTo examine the association between the -1021C/T DBH polymorphism and personality traits in healthy volunteers.MethodsThe participants were 627 Japanese unrelated volunteers. The subjects with present psychiatric disorders or past history of psychiatric disorders according to the DSM-IV were excluded. The DBH genotypes were identified by a PCR-RFLP method, and personality traits were assessed by the Temperament and Character Inventory (TCI). The study protocol was approved by the Ethics Committee of Yamagata University School of Medicine, and all subjects provided written informed consent to participate.ResultsIn the two-factor analysis of covariance with the DBH genotype and sex as factors and with age as a covariate, there was no main effect of the DBH genotype on any TCI score, while the interaction between the factors was significant in harm avoidance. In the post-hoc analysis, the group with the T allele predictive of lower DBH activity had higher scores of harm avoidance than that without the T allele in females (p=0.006), but not in males.ConclusionThe present study suggests that the -1021C/T DBH polymorphism affects the personality trait of harm avoidance in healthy females.
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Suzuki A, Matsumoto Y, Shibuya N, Sadahiro R, Kamata M, Goto K, Otani K. The brain-derived neurotrophic factor Val66Met polymorphism modulates the effects of parental rearing on personality traits in healthy subjects. Genes Brain Behav 2011; 10:385-91. [PMID: 21223503 DOI: 10.1111/j.1601-183x.2010.00673.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
There is a growing body of data suggesting that gene-environment interaction is critical in the characterization of personality traits; however, previous studies have not taken into consideration variability in parental rearing as an environmental factor. In this study, we examined the effects of the interaction between the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism and parental rearing on personality traits in 710 healthy Japanese subjects. Perceived parental rearing was assessed by the Parental Bonding Instrument (PBI), which consists of the care and protection factors. Assessment of personality traits was performed by the temperament and character inventory (TCI), which has seven dimensions, i.e. novelty seeking, harm avoidance, reward dependence, persistence, self-directedness, cooperativeness and self-transcendence. Parental rearing has significant main effects on some TCI dimensions, but no significant main effects of the BDNF genotype on the TCI scores were found. The interaction between the BDNF genotype and maternal care of the PBI had significant effects on harm avoidance and self-directedness of the TCI. Post hoc analyses showed that decreased maternal care was correlated with increased harm avoidance and decreased self-directedness, and for both personality traits the partial correlation coefficient was highest in the Met/Met genotype group and lowest in the Val/Val genotype group and the value of the Val/Met genotype group was in the middle. Data from this study suggest that the BDNF Val66Met polymorphism modulates the effects of parental rearing, especially maternal care, on harm avoidance and self-directedness in healthy subjects.
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Affiliation(s)
- A Suzuki
- Department of Psychiatry, Yamagata University School of Medicine, Yamagata, Japan.
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de Jonge R, Peter van Esse H, Kombrink A, Shinya T, Desaki Y, Bours R, van der Krol S, Shibuya N, Joosten MHAJ, Thomma BPHJ. Conserved Fungal LysM Effector Ecp6 Prevents Chitin-Triggered Immunity in Plants. Science 2010; 329:953-5. [DOI: 10.1126/science.1190859] [Citation(s) in RCA: 539] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Silipo A, Erbs G, Shinya T, Dow JM, Parrilli M, Lanzetta R, Shibuya N, Newman MA, Molinaro A. Glyco-conjugates as elicitors or suppressors of plant innate immunity. Glycobiology 2009; 20:406-19. [DOI: 10.1093/glycob/cwp201] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Kaku H, Kaneko H, Minamihara N, Iwata K, Jordan ET, Rojo MA, Minami-Ishii N, Minami E, Hisajima S, Shibuya N. Elderberry Bark Lectins Evolved to Recognize Neu5Ac 2,6Gal/GalNAc Sequence from a Gal/GalNAc Binding Lectin Through the Substitution of Amino-Acid Residues Critical for the Binding to Sialic Acid. J Biochem 2007. [DOI: 10.1093/jb/mvm206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Iiizumi G, Sadoya Y, Hino S, Shibuya N, Kawabata H. Proteomic characterization of the site-dependent functional difference in the rat small intestine. Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics 2007; 1774:1289-98. [PMID: 17881305 DOI: 10.1016/j.bbapap.2007.07.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 07/11/2007] [Accepted: 07/20/2007] [Indexed: 11/25/2022]
Abstract
To investigate the site-dependent functional difference in the small intestine, proteomic analysis was carried out on the three distinct parts of the rat small intestine. Male Wistar rats (7 weeks old) were fed a semi-purified diet ad libitum for 1 week. Intestinal tissues from the proximal, middle and distal regions of the small intestine were subjected to two-dimensional polyacrylamide gel electrophoresis, and the abundance of each spot was determined fluorometrically. MALDI-TOF/MS and LC-MS/MS analysis of the tryptic peptides were performed to identify the proteins. Many of the 180 identified proteins showed a distinctive distribution pattern along the small intestine. Glutathione S-transferase, Catechol O-methyltransferase and Villin 2 decreased gradually from the jejunum to the ileum, in contrast, non-specific dipeptidase and Keratin 19 increased gradually toward the ileum. The voltage-dependent anion channel 2 was most abundant in the duodenum while the L- and I-Fatty acid binding protein (FABP) and Cellular retinol binding protein (CRBP-II) were in the jejunum, and the Bile acid binding protein (BABP) was only observed in the ileum. The findings of these and of another proteins identified in this study may contribute to further understanding of the small intestinal function, and to clinical applications of small intestinal diseases.
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Affiliation(s)
- Gotaro Iiizumi
- Laboratory for Nutritional Biochemistry, School of Agriculture, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
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Affiliation(s)
- T Zgonis
- Department of Orthopaedics, The University of Texas Health Science Center, San Antonio, Texas, USA.
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Yamada K, Shibuya N, Aramaki S, Okuno S, Soh T, Yamauchi N, Hattori MA. Development of multidrug resistance type I Cmdr1 expression in chicken embryonic gonads. Comp Biochem Physiol A Mol Integr Physiol 2007; 147:928-33. [PMID: 17383916 DOI: 10.1016/j.cbpa.2007.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/08/2006] [Revised: 02/02/2007] [Accepted: 02/20/2007] [Indexed: 11/29/2022]
Abstract
A primary role of P-glycoprotein (P-gp), encoded by the multidrug resistance type I gene, is to protect against naturally occurring xenotoxics. Recently, the preferential expression of chicken multidrug resistance type I (Cmdr1) was identified in the embryonic gonads during the early periods of development. Here we investigated the expression of Cmdr1 and P-gp in the gonads during embryogenesis, and compared to that in the ovarian follicles of domestic hens (Gallus gallus). As revealed by immunohistochemistry, P-gp was highly expressed in theca cells of mature follicles, whereas the expression was low in immature follicles. Immunohistochemical analysis showed that expression of Cmdr1-type P-gp was very low in embryonic gonads. Cmdr1 mRNA was undetectable in the gonads of 5-day embryos (E5) by RT-PCR, whereas Cmdr1 mRNA was significantly detectable in the developing gonads at E9 and E21. In the testicular tissues, germ cells were distributed along developing seminiferous cords as identified by a specific marker gene, whereas Cmdr1-type P-gp positive cells were observed evenly on testicular tissues. Collectively, it is concluded that Cmdr1 expression is initiated in the chicken ovary and testis after sexual differentiation, but expression of Cmdr1-type P-gp is very low through embryogenesis.
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Affiliation(s)
- K Yamada
- Laboratory of Reproductive Physiology and Biotechnology, Department of Animal and Marine Bioresource Sciences, Graduate School of Agriculture, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
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Abstract
A five-year-old, male crossbreed rabbit was referred for acute caudal abdominal swelling. On physical examination, the rabbit was slightly depressed and showed an enlarged subcutaneous cyst in the caudal abdomen and an adjacent small, ulcerated solid mass. A drainage tube was placed in the cystic area, and surgical resection of the solid mass was performed. The histopathological diagnosis of the mass was apocrine adenocarcinoma. To the authors' knowledge, this report describes the first case of spontaneous apocrine adenocarcinoma of possible sweat gland origin in a male rabbit.
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Affiliation(s)
- Y Miwa
- Laboratory of Veterinary Emergency Medicine, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Hatakeyama N, Yamazaki M, Shibuya N, Yamamura S, Momose Y. Effects of ketamine on voltage-dependent calcium currents and membrane potentials in single bullfrog atrial cells. J Anesth 2005; 15:149-53. [PMID: 14566513 DOI: 10.1007/s005400170017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE This study was undertaken to assess the effect of ketamine on L-type calcium channel current (I(Ca)) and membrane action potential in the bullfrog single atrial myocyte. METHODS Bullfrog single atrial myocytes were prepared by enzymatic dispersion. Whole-cell voltage-clamp technique and current clamp technique were used to monitor I(Ca), membrane resting potential, and action potential. RESULTS Ketamine (10(-5)-10(-3) M) showed dose-dependent inhibition of I(Ca) in a reversible manner. The 50% inhibitory concentration (IC(50)) of ketamine on I(Ca) was estimated to be 0.92 x 10(-5) M. Use-dependent block of I(Ca) was not observed. The resting membrane potential was depolarized at a high concentration (10(-4) M) of ketamine. Reduction of the plateau phase and prolonged duration of the action potential were observed in the presence of a high concentration of ketamine (10(-4) M). CONCLUSION Ketamine has an inhibitory effect on I(Ca) in the bullfrog single atrial myocyte, and a high dose (10(-4) M) of ketamine prolonges the duration of the action potential. The mechanism of inhibition of I(Ca) seems to be a direct effect on the L-type calcium channel, not like an open channel blocker.
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Affiliation(s)
- N Hatakeyama
- Department of Anesthesiology, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan
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Goto H, Matsuo H, Nakane S, Izumoto H, Fukudome T, Kambara C, Shibuya N. Plasmapheresis affects T helper type-1/T helper type-2 balance of circulating peripheral lymphocytes. Ther Apher 2001; 5:494-6. [PMID: 11800088 DOI: 10.1046/j.1526-0968.2001.00386.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Plasmapheresis not only removes humoral factors, but may also modulate cellular immunity. We investigated whether plasmapheresis influenced T helper type-1/T helper type-2 (Th1/Th2) cytokine-producing-cell balance in 3 patients with neuroimmunological disease. The production of interferon-gamma (IFN-gamma), interleukin-2 (IL-2), and IL-4 in the culture supernatant of peripheral blood mononuclear cells stimulated by anti-CD3 and anti-CD28 was assayed. In 2 of 3 patients, plasmapheresis (immunoadsorption or plasma exchange) reduced Th1/Th2 cytokine ratio. The results may suggest that plasmapheresis induces a shift of Th1/Th2 balance in peripheral blood.
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Affiliation(s)
- H Goto
- Department of Neurology, Kawatana National Hospital, Nagasaki, Japan
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Shibuya N, Taki T, Mugishima H, Chin M, Tsuchida M, Sako M, Kawa K, Ishii E, Miura I, Yanagisawa M, Hayashi Y. t(10;11)-acute leukemias with MLL-AF10 and MLL-ABI1 chimeric transcripts: specific expression patterns of ABI1 gene in leukemia and solid tumor cell lines. Genes Chromosomes Cancer 2001; 32:1-10. [PMID: 11477655 DOI: 10.1002/gcc.1160] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [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: 11/12/2022] Open
Abstract
The recurrent translocation t(10;11) is associated with acute myeloid leukemia (AML). The AF10 gene on chromosome 10 at band p12 and MLL at 11q23 fuse in the t(10;11)(p12;q23). Recently, we have identified ABI1 as a new partner gene for MLL in an AML patient with a t(10;11)(p11.2;q23). The ABI1 is a human homologue of the mouse Abl-interactor 1 (Abi1), encoding an Abl-binding protein. The ABI1 protein exhibits sequence similarity to homeotic genes, and contains several polyproline stretches and a src homology 3 (SH3) domain. To clarify the clinical features of t(10;11)-leukemias, we investigated 6 samples from acute leukemia patients with t(10;11) and MLL rearrangement and detected MLL-AF10 chimeric transcripts in 5 samples and MLL-ABI1 in one. The patient with MLL-ABI1 chimeric transcript is the second case described, thus confirming that the fusion of the MLL and ABI1 genes is a recurring abnormality. Both of the patients with MLL-ABI1 chimeric transcript are surviving, suggesting that these patients have a better prognosis than the patients with MLL-AF10. To investigate the roles of AF10 and ABI1 further, we examined the expression of these genes in various cell lines and fresh tumor samples using the reverse transcriptase-polymerase chain reaction method. Although AF10 was expressed in almost all cell lines similarly, the expression patterns of ABI1 were different between leukemia and solid tumor cell lines, suggesting the distinctive role of each isoform of ABI1 in these cell lines. We also determined the complete mouse Abi1 sequence and found that the sequence matched with human ABI1 better than the originally reported Abi1 sequence. Further functional analysis of the MLL-AF10 and MLL-ABI1 fusion proteins will provide new insights into the leukemogenesis of t(10;11)-AML.
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Affiliation(s)
- N Shibuya
- Department of Pediatrics, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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Day RB, Okada M, Ito Y, Tsukada K, Zaghouani H, Shibuya N, Stacey G. Binding site for chitin oligosaccharides in the soybean plasma membrane. Plant Physiol 2001; 126:1162-73. [PMID: 11457966 PMCID: PMC116472 DOI: 10.1104/pp.126.3.1162] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2000] [Revised: 01/09/2001] [Accepted: 03/06/2001] [Indexed: 05/20/2023]
Abstract
Affinity cross-linking of the plasma membrane fraction to an (125)I-labeled chitin oligosaccharide led to the identification and characterization of an 85-kD, chitin binding protein in plasma membrane-enriched fractions from both suspension-cultured soybean cells and root tissue. Inhibition analysis indicated a binding preference for larger (i.e. degrees of polymerization = 8) N-acetylated chitin molecules with a 50% inhibition of initial activity value of approximately 50 nM. N-Acetyl-glucosamine and chitobiose showed no inhibitory effects at concentrations as high as 250 microM. It is noteworthy that the major lipo-chitin oligosaccharide Nod signal produced by Bradyrhizobium japonicum was also shown to be a competitive inhibitor of ligand binding. However, the binding site appeared to recognize the chitin portion of the Nod signal, and it is unlikely that this binding activity represents a specific Nod signal receptor. Chitooligosaccharide specificity for induction of medium alkalinization and the generation of reactive oxygen in suspension-cultured cells paralleled the binding activity. Taken together, the presence of the chitin binding protein in the plasma membrane fraction and the specificity and induction of a biological response upon ligand binding suggest a role for the protein as an initial response mechanism for chitin perception in soybean (Glycine max).
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Affiliation(s)
- R B Day
- Department of Microbiology, University of Tennessee, M409 Walters Life Science Building, Knoxville, Tennessee 37996-0845, USA
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Shibuya N, Tachibana H, Kawabata K, Sugita M. [Memory function in patients with Parkinson's disease: in relation to neuropsychological tests and cerebral blood flow]. Nihon Ronen Igakkai Zasshi 2001; 38:193-200. [PMID: 11305033 DOI: 10.3143/geriatrics.38.193] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/11/2022]
Abstract
We conducted a neuropsychological comparison between Parkinson's disease (PD; n = 24) and healthy control subjects (n = 12) using Rey's auditory-verbal learning test (RAVLT) and the Rey-Osterrieth complex figure test (RCFT) assessing memory function. In addition, to determine the function of cortical and subcortical areas, we measured the regional cerebral blood flow (rCBF) using N-isopropyl-p[123I]-iodoamhetamine (123I-IMP) and single photon emission computed tomography (SPECT) and analyzed the relationships between brain regions and memory function. On the RAVLT, significant group differences in recall words were found on all learning trials between patients with PD and control subjects, whereas recognition, learning rate and forgetting rate were basically the same. In addition, the primacy/recency effect was statistically equal for both groups. Results suggest faulty retrieval mechanisms in PD, whereas encoding and retention procesess did not prove to be affected. There were significant correlations between perfusion of the prefrontal and parietal cortices and total number of free recall in five trials. On the RCFT, recalls after 30 sec and 30 min were impaired in patients with PD although no significant difference in accuracy scores obtained in copy was noted. A percent recall score calculated using the formula 100 x [1 - (copy-recall)/copy] was also decreased in patients with PD. There were significant correlations between perfusion of the occipital and parietal cortices and percent recall score. Our data suggest that auditory memory deficits based on the RAVLT in PD may be mainly related to frontal and parietal cortical dysfunction, while visual recall deficits based on the RCFT may be related to the parieto-occipital cortical dysfunction.
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Affiliation(s)
- N Shibuya
- Fifth Department of Internal Medicine, Hyogo College of Medicine
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Takai R, Hasegawa K, Kaku H, Shibuya N, Minami E. Isolation and analysis of expression mechanisms of a rice gene, EL5, which shows structural similarity to ATL family from Arabidopsis, in response to N-acetylchitooligosaccharide elicitor. Plant Sci 2001; 160:577-583. [PMID: 11448732 DOI: 10.1016/s0168-9452(00)00390-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two rice cDNAs, EL5 and RRF1, were isolated and characterized. EL5 was responsive to N-acetylchitooligosaccharide, a biotic elicitor active in suspension-cultured rice cells. The structural specificity of the elicitor required for the expression of EL5 was consistent with other defense reactions observed in the experimental system, indicating that the elicitor signal to EL5 is transmitted through a single class of receptor-mediated recognition events. However, the intracellular signaling pathway to EL5 was distinct from those to other elicitor-responsive genes. Sequence analysis and alignment showed that a genomic sequence stored in rice genome databases in addition to EL5 and RRF1 belongs to the ATL family of RING-H2 finger motif proteins first isolated from Arabidopsis.
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Affiliation(s)
- R Takai
- Institute of Applied Biochemistry, University of Tsukuba, 305-8072, Tsukuba, Japan
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Fukudome T, Shibuya N, Yoshimura T, Eguchi K. Short-term effects of prednisolone on neuromuscular transmission in the isolated mdx mouse diaphragm. TOHOKU J EXP MED 2000; 192:211-7. [PMID: 11249150 DOI: 10.1620/tjem.192.211] [Citation(s) in RCA: 3] [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: 11/18/2022]
Abstract
To determine the mechanism of the beneficial effects of prednisolone on Duchenne muscular dystrophy (DMD), we examined the short-term effects of prednisolone on neuromuscular transmission by using conventional microelectrode methods in the mdx mice. High (56 micromol/liter) and low (2.8 micromol/liter) concentrations of prednisolone were applied to a bath containing phrenic nerve-diaphragm preparations from mdx mice, and several parameters related to neuromuscular transmission were recorded. The high dose of prednisolone significantly decreased parameter n on quantal release by nerve impulse and decay time-constant of end-plate potentials, which showed adverse effect on neuromuscular transmission. The low dose of prednisolone did not significantly increase quantal content, but could assist the compensatory reaction to maintain the safety margin of neuromuscular transmission in the mdx mice. Our results suggest that the latter effect represents one of the possible mechanisms of the therapeutic effects of prednisolone on DMD.
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Affiliation(s)
- T Fukudome
- Department of Neurology, Kawatana National Hospital, Nagasaki 859-3615, Japan [corrected]
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Yoshida T, Horinouchi M, Ayabe Y, Yamaguchi T, Shibuya N, Habe H, Nojiri H, Yamane H, Omori T. Saccharide production from methanol by transposon 5 mutants derived from the extracellular polysaccharide-producing bacterium Methylobacillus sp. strain 12S. Appl Microbiol Biotechnol 2000; 54:341-7. [PMID: 11030570 DOI: 10.1007/s002530000407] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A CH3OH-utilizing bacterium that has the ability to produce extracellular polysaccharide (EPS) was isolated from a soil sample, and was identified as the obligate methylotroph Methylobacillus sp. strain 12S on the basis of its 16S rDNA sequence and growth-substrate specificity. The EPS produced by strain 12S was purified and the sugar composition was analysed by GC-MS and HPLC to reveal that the EPS was a heteropolymer composed of glucosyl, galactosyl, and mannosyl residues in the molar ratio 3:1:1. In order to produce mono- and/or oligosaccharides by single-step fermentation from CH3OH, stain 12S was mutagenized by transposon 5. Among eleven EPS-deficient mutants, three strains were found to accumulate significant amounts of reducing sugars in the media. The amounts of the reducing sugars produced by the mutants ( > ca. 700 mg glucose equivalent/l) were > 11-22 times higher than those produced by the wild-type strain (<ca. 60 mg glucose equivalent/l). The GC-MS analysis showed that all the mutants accumulated glucose, erythrose, threose and a disaccharide-like compound in the media.
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Affiliation(s)
- T Yoshida
- Biotechnology Research Center, University of Tokyo, Japan.
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Shibuya N, Tachibana H, Okuda B, Sugita M. [Neuropsychological comparison between corticobasal degeneration and progressive supranuclear palsy]. Nihon Ronen Igakkai Zasshi 2000; 37:541-7. [PMID: 11031827 DOI: 10.3143/geriatrics.37.541] [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: 04/15/2023]
Abstract
We conducted a neuropsychological comparison among cases with corticobasal degeneration (CBD; n = 8), those with progressive supranuclear palsy (PSP; n = 5) and healthy control subjects (n = 12) using an extensive neuropsychological battery assessing memory and executive functions. There were no significant differences among three groups for age, education, scores on the Mini-Mental State Examination and Zung's self-rating depression scale. Both patient groups showed retrieval impairment without recognition difficulties, and a dysexecutive syndrome. Along with those similarities, we observed some differences between CBD and PSP patients. Memory impairments in CBD patients were more marked than PSP patients in Rey's complex figure test, while they were less prominent in Rey's auditory verbal learning test. Perseverative errors of Nelson in Wisconsin card sorting test (Keio version) were more marked in CBD patients than in PSP patients. These two diseases showed memory and executive dysfunctions probably due to subcortico-frontal dysfunction. Some neuropsychological differences may help to distinguish CBD clinically from PSP.
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Affiliation(s)
- N Shibuya
- Fifth Department of Internal Medicine, Hyogo College of Medicine
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Goto H, Matsuo H, Fukudome T, Shibuya N, Ohnishi A, Nakamura H. Chronic autonomic neuropathy in a patient with primary Sjögren's syndrome. J Neurol Neurosurg Psychiatry 2000; 69:135. [PMID: 10864625 PMCID: PMC1736990 DOI: 10.1136/jnnp.69.1.135] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kano H, Juji F, Shibuya N, Narita M, Naritaka S, Suko M, Morita Y, Iwata T. [Clinical courses of 18 cases with food-dependent exercise-induced anaphylaxis]. Arerugi 2000; 49:472-8. [PMID: 10916885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Eighteen cases (7 males and 11 females) of food-dependent exercise-induced anaphylaxis were observed for several years. The age of the patients at the first visit to our hospital ranged from 9 to 43 years (average 24.3 years). The offending foods were wheat in 9 cases, shrimp in 2 cases, shellfish in 1 case, fish in 1 case, and unknown foods in 5 cases. The inducing exercises were ball play games, running, riding a bicycle, swimming, kendo (Japanese fencing), walking, and so on. We advised these patients to avoid eating offending foods or taking exercises, or to take antiallergic medicine such as DSCG, and repirinast. We observed their clinical courses and laboratory data for 2 to 10 years. Only a few cases relapsed anaphylactoid reactions, but all cases have improved until now. In some cases, IgE RAST scores for wheat decreased. In other cases, the rate of histamine release on anti-IgE stimulation decreased after taking DSCG.
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Affiliation(s)
- H Kano
- Department of Pediatrics, Faculty of Medicine, University of Tokyo
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Yamaguchi T, Yamada A, Hong N, Ogawa T, Ishii T, Shibuya N. Differences in the recognition of glucan elicitor signals between rice and soybean: beta-glucan fragments from the rice blast disease fungus Pyricularia oryzae that elicit phytoalexin biosynthesis in suspension-cultured rice cells. Plant Cell 2000; 12:817-26. [PMID: 10810152 PMCID: PMC139929 DOI: 10.1105/tpc.12.5.817] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/1999] [Accepted: 03/06/2000] [Indexed: 05/18/2023]
Abstract
Partial acid/enzymatic hydrolysis of the beta-(1-->3, 1-->6)-glucan from the cell walls of the rice blast disease fungus Pyricularia oryzae (Magnaporthe grisea) released elicitor-active fragments that induced phytoalexin biosynthesis in suspension-cultured rice cells. From the digestion of the glucan by an endo-beta-(1-->3)-glucanase, one highly elicitor-active glucopentaose was purified as a reduced compound, tetraglucosyl glucitol. The structure of this tetraglucosyl glucitol as well as two other related tetraglucosyl glucitols was elucidated as follows: (1) Glcbeta(1-->3)Glcbeta(1-->3)(Glcbeta(1-->6)) Glcbeta(1-->3)Glucitol (most active fragment); (2) Glcbeta(1-->3)(Glcbeta(1-->6))Glcbeta(1-->3)Glcbeta (1-->3)Glucitol; and (3) Glcbeta(1-->6) Glcbeta(1-->3)Glcbeta(1-->3)Glcbeta(1-->3)Glucitol. However, a synthetic hexa-beta-glucoside, known as a minimal structural element for the phytoalexin elicitor for soybean cotyledon cells, did not induce phytoalexin biosynthesis in the rice cells. Conversely, the beta-glucan fragment from P. oryzae did not induce phytoalexin biosynthesis in the soybean cotyledon cells, indicating differences in the recognition of glucooligosaccharide elicitor signals in these two plants. Because rice cells have been shown to recognize chitin fragments larger than pentamers as potent elicitors, these results also indicate that the rice cells can recognize at least two types of oligosaccharides from fungal cell walls as signal molecules to initiate defense response.
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Affiliation(s)
- T Yamaguchi
- Department of Biotechnology, National Institute of Agrobiological Resources, Tsukuba, Ibaraki 305-0826, Japan
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Onodera H, Abe Y, Yoshida M, Yamawaki N, Yamashita Y, Matsuo H, Ichinose K, Otsuru I, Shibuya N. A new device for selective removal of CD4+ T cells. 1998. Ther Apher 2000; 4:161-6. [PMID: 10805436 DOI: 10.1046/j.1526-0968.2000.004002161.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kano H, Sugamoto K, Goto M, Katayama H, Narita M, Shibuya N, Naritaka S, Kato H, Yanagisawa M, Iwata T. [A case of common variable immunodeficiency with intractable diarrhea and the functional disorder of renal tubules]. Nihon Rinsho Meneki Gakkai Kaishi 2000; 23:163-72. [PMID: 10863333 DOI: 10.2177/jsci.23.163] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We report a case of a 31-year-old woman with common variable immunodeficiency (CVID) complicated with intractable diarrhea and the functional disorder of renal tubules. The patient became hypogammaglobulinemic after she suffered from measles at 6 years of age. She also suffered from lupus-like syndrome at 7 years of age. The complete remission was obtained by glucocorticosteroid treatment. An intravenous immunoglobulin replacement therapy was introduced at 11 years of age, since then her general condition was stable for more than 20 years. When she was 29 years old, she suffered from generalized malaise, anorexia with body weight loss, and numbness of face. The intractable diarrhea as protein loosing syndrome, and the severe abnormality of electrolyte balance with metabolic acidosis as the functional disorder of renal tubules were found. Her condition was not improved by the electrolytes or alkali replacement therapy. She was admitted for further evaluation and treatment. The intractable diarrhea and the functional disorder of renal tubules were dramatically improved after absolute restriction of food intake under hyperalimentation. When she began to take food, the symptom and sign became worse again. The interstitial nephritis and nonspecific inflammation of intestine were found by the tissue biopsy. The most characteristic finding was the infiltration of lymphocytes (predominantly CD 8 + T lymphocytes) in both intestinal mucosa and renal interstitium. The introduction of glucocorticosteroids improved her general condition and biochemical findings. This CVID case is complicated with intractable diarrhea and the functional disorder of renal tubules which is associated with the infiltration of CD 8 + lymphocytes in intestine and kidney. We consider that such case is very rare and valuable to report.
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Affiliation(s)
- H Kano
- Dept. of Pediatrics, Faculty of Medicine, University of Tokyo
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Saito M, Chikazawa T, Matsuoka H, Nishizawa Y, Shibuya N. Elicitor action via cell membrane of a cultured rice cell demonstrated by the single-cell transient assay. J Biotechnol 2000; 76:227-32. [PMID: 10656337 DOI: 10.1016/s0168-1656(99)00198-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In order to analyze intracellular signal transduction, we investigated the mechanism of chemical elicitor action by single-cell transient assay using green fluorescent protein (GFP) as a reporter gene. When the elicitor was applied from outside the cell into which the chitinase promoter and GFP reporter were introduced beforehand, fluorescence emission of GFP was observed. In contrast, when the elicitor was introduced in the cell to let the elicitor act from inside, no emission was observed. Addition of further elicitor from outside, however, did cause GFP emission. Therefore, it is clear that the elicitor does not act after entering the cell but that its signal is transduced into the cell via the cell membrane.
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Affiliation(s)
- M Saito
- Department of Biotechnology, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei, Japan
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Shibuya N, Zou DT, Hibino S, Ono Y, Shinoda K, Matsuda K, Kokubo Y, Takeichi A, Azuma A, Kudo S. [Effect of clarithromycin on adhesion and infiltration of cancer cells]. Jpn J Antibiot 2000; 53 Suppl A:48-51. [PMID: 10756451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Ito Y, Shibuya N. [Receptors for the microbial elicitors of plant defense responses]. Tanpakushitsu Kakusan Koso 1999; 44:2322-30. [PMID: 10586676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- Y Ito
- Department of Biotechnology, National Institute of Agrobiological Resources, Tsukuba, Japan
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Matsuo H, Goto H, Ohtsuru I, Izumoto H, Fukudome T, Fujishita S, Shibuya N. Myasthenic crisis with delayed recovery after plasmapheresis. Ther Apher 1999; 3:326-8. [PMID: 10608729 DOI: 10.1046/j.1526-0968.1999.00205.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report on 2 elderly patients with myasthenia gravis in whom recovery from crisis was prolonged despite intensive plasmapheresis (PP). In both patients, the anti-acetylcholine (anti-AChR) titer failed to fall sufficiently after completing PP. These patients might have had antibodies that produced a more pronounced effect on the degradation of AChR, or the synthesis of AChR might have been reduced by aging. The anti-AChR titer did not correlate with a reduction of IgG after PP in 1 patient. Successful treatment was achieved by keeping the anti-AChR titer at a low level via the concomitant use of prednisolone with PP.
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Affiliation(s)
- H Matsuo
- Department of Neurology, Kawatana National Hospital, Japan
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