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Takenokuchi M, Matsumoto K, Nitta Y, Takasugi R, Inoue Y, Iwai M, Kadoyama K, Yoshida K, Takano-Ohmuro H, Taniguchi T. In Vitro and In Vivo Antiglycation Effects of Connarus ruber Extract. Planta Med 2022; 88:1026-1035. [PMID: 34861700 DOI: 10.1055/a-1690-3528] [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: 06/13/2023]
Abstract
Accumulation of advanced glycation end products (AGEs) of the Maillard reaction has been implicated in the pathogenesis of diabetes and its complications. Connarus ruber has been used as a folk remedy for several diseases, including diabetes; however, its underlying mechanism has not yet been investigated. This study investigated the effects of C. ruber extract against glycation on collagen-linked AGEs in vitro and streptozotocin-induced diabetic rats (STZ-DM rats) in vivo. The antiglycation activities of C. ruber extract and aminoguanidine (AG) were examined using a collagen glycation assay kit. Nonfluorescent AGE, Nε-carboxymethyl lysine (CML), Nω-carboxymethyl arginine, and Nε-carboxyethyl lysine levels were measured via electrospray ionization-liquid chromatography-tandem mass spectrometry. The effect of the extract on the cytotoxicity of methylglyoxal (MG), a precursor of AGEs, was examined in HL60 cells. STZ-DM rats were treated with the extract for 4 wk, and the effect was assessed using biochemical markers in the serum and CML-positive cells in renal tissues. C. ruber extract dose-dependently inhibited the glycation of collagen and formation of nonfluorescent AGEs, which was comparable to AG, and it significantly attenuated MG-induced cytotoxicity in HL60 cells. Furthermore, the glycated albumin levels in STZ-DM rats decreased, the increase in serum lipid levels was reversed, and immunohistochemistry demonstrated that CML deposition in the glomerulus of STZ-DM rats significantly decreased. Although further studies are needed, C. ruber could be a potential therapeutic for preventing and progressing many pathological conditions, including diabetes.
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Affiliation(s)
- Mariko Takenokuchi
- Faculty of Pharmacological Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - Kinuyo Matsumoto
- Faculty of Health and Welfare, Kobe Women's University, Kobe, Hyogo, Japan
| | - Yuko Nitta
- Faculty of Health and Welfare, Kobe Women's University, Kobe, Hyogo, Japan
| | | | - Yukari Inoue
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | - Michi Iwai
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - Keiichi Kadoyama
- Department of Pharmaceutical Health Care, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, Japan
| | | | | | - Taizo Taniguchi
- Research Institute for Human Health Science, Konan University, Kobe, Hyogo, Japan
- Pharmacrea Kobe Co. Ltd., Kobe, Hyogo, Japan
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Nonaka K, Ohata K, Ichihara S, Ban S, Hiejima Y, Minato Y, Tashima T, Matsuyama Y, Takita M, Matsuhashi N, Takasugi R, Neumann H. Development of a new classification for in vivo diagnosis of duodenal epithelial tumors with confocal laser endomicroscopy: A pilot study. Dig Endosc 2016; 28:186-93. [PMID: 26510483 DOI: 10.1111/den.12564] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [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: 08/22/2015] [Revised: 10/14/2015] [Accepted: 10/26/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIM Confocal laser endomicroscopy (CLE) has been established for in vivo diagnosis of various gastrointestinal diseases. However, validated criteria for confocal diagnosis of duodenal tumors do not exist. Therefore, the aim of the present pilot study was to develop a novel classification for in vivo optical diagnosis of duodenal tumors using CLE. METHODS Consecutive patients with duodenal tumorous lesions were included. First, an initial classification system was developed which was then validated. Histopathology was used as a reference standard. RESULTS A simple classification system for in vivo diagnosis of duodenal epithelial tumors using CLE was developed. Sensitivity, specificity, and accuracy were 90%, 100%, and 97%, respectively. Positive and negative predictive values were calculated as 100% and 96%. The kappa coefficient representing consistency was 1 between observers and within each observer. CONCLUSION A new classification for in vivo diagnosis of duodenal epithelial tumors using confocal imaging has been developed. The new classification system allows adequate prediction of histology and could therefore be used to guide subsequent therapy of duodenal lesions.
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Affiliation(s)
- Kouichi Nonaka
- Department of Gastroenterology, NTT Medical Center Tokyo
| | - Ken Ohata
- Department of Gastroenterology, NTT Medical Center Tokyo
| | - Shin Ichihara
- Department of Pathology, Sapporo-Kosei General Hospital, Sapporo
| | - Shinichi Ban
- Department of Pathology, Dokkyo Medical University Koshigaya Hospital, Saitama
| | | | - Yohei Minato
- Department of Gastroenterology, NTT Medical Center Tokyo
| | | | | | - Maiko Takita
- Department of Gastroenterology, NTT Medical Center Tokyo
| | | | - Rumi Takasugi
- Division of Technical Services, Kyodo Byori Inc., Kobe, Japan
| | - Helmut Neumann
- Department of Medicine I, University Hospital Erlangen, Erlangen, Germany
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Nonaka K, Ohata K, Ban S, Ichihara S, Takasugi R, Minato Y, Tashima T, Matsuyama Y, Takita M, Matsuhashi N, Neumann H. Histopathological confirmation of similar intramucosal distribution of fluorescein in both intravenous administration and local mucosal application for probe-based confocal laser endomicroscopy of the normal stomach. World J Clin Cases 2015; 3:993-999. [PMID: 26677449 PMCID: PMC4677088 DOI: 10.12998/wjcc.v3.i12.993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 09/24/2015] [Accepted: 10/27/2015] [Indexed: 02/05/2023] Open
Abstract
Probe-based confocal laser endomicroscopy (pCLE) is capable of acquiring in vivo magnified cross-section images of the gastric mucosa. Intravenous injection of fluorescein sodium is used for confocal imaging. However, it is still under debate if local administration of the dye to the mucosa is also effective for confocal imaging as it is not yet clear if topical application also reveals the intramucosal distribution of fluorescein. The objective of this study was to evaluate the intramucosal distribution of fluorescein sodium after topical application and to compare the distribution to the conventional intravenous injection used for confocal imaging. pCLE of the stomach uninfected with Helicobacter pylori was performed in a healthy male employing intravenous administration and local mucosal application of fluorescein. The mucosa of the lower gastric body was biopsied 1 min and 5 min after intravenous administration or local mucosal application of fluorescein, and the distribution of fluorescein in the biopsy samples was examined histologically. Green fluorescence was already observed in the cytoplasm of fundic glandular cells in the biopsied deep mucosa 1 min after local mucosal application of fluorescein. It was also observed in the foveolar lumen and inter-foveolar lamina propria, although it was noted at only a few sites. In the tissue biopsied 5 min after the local mucosal application of fluorescein, green fluorescence was more frequently noted in the cytoplasm of fundic glandular cells than in that 1 min after the local mucosal application of fluorescein, although obvious green fluorescence was not identified in the foveolar lumen or inter-foveolar lamina propria. The distribution of intravenously administered fluorescein in the cytoplasm of fundic glandular cells was also clearly observed similarly to that after local mucosal application of fluorescein. Green fluorescence in more cells was observed in many cells 5 min after intravenous administration compared with that after 1 min. The presence of fluorescein in the mucosa was observed within a short time after local mucosal application of fluorescein, suggesting that pCLE images similarly to those after intravenous fluorescein administration can be acquired by local mucosal application of fluorescein.
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Sekizawa K, Ujie Y, Nakazawa H, Sasaki H, Katsumata U, Takasugi R. [Abnormalities in cough reflex]. Nihon Ronen Igakkai Zasshi 1991; 28:308-10. [PMID: 1716706] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Enzymes degrading peptides may participate in the regulation of the cough reflex. Thus, decreases in enzyme activities may enhance cough reflex and a decrease in cough reflex may lead to aspiration pneumonia. Down- and up-regulation of cough reflex is important for the understanding of cough reflex.
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Affiliation(s)
- K Sekizawa
- Department of Geriatric Medicine, Tohoku University School of Medicine
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Sugita K, Kayama T, Ohwada K, Ichinose M, Takasugi R, Ishizaki T. [A case of multiple myeloma showing intracranial hypertension due to large cranial mass lesions]. No To Shinkei 1986; 38:625-9. [PMID: 3756028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
It is well known that the case of multiple myeloma shows punched-out lesions of the cranium without intracranial hypertension. In this paper a case of multiple myeloma is reported showing intracranial hypertension due to a large tumor that developed in the left parietal bone. There are only 13 case reports about cranial mass lesion of multiple myeloma since 1928. A 52 year-old female was admitted to Iwate Prefectural Isawa Hospital suffering from headache, nausea and vomiting. She had been already diagnosed as multiple myeloma and treated with chemotherapy using Cyclophosphamide, Melphalan and Prednisolone for 2 years. On admission, a large subcutaneous mass was presented on the left parietal region. Craniogram revealed large osteolytic lesion of the left parietal bone and 3 punched-out lesions of the frontal bone. CT scan revealed a large mass lesion in the left epidural space, diploe and subcutaneous space. Angiography showed avascular area. Brain scintigram showed diffuse hot area. Other skeletal bones showed no abnormality. Laboratory examination revealed high concentration of gamma-globulin and high erythrocyte sedimentation rate. Electrophoresis showed high value of immunoglobulin G; immunoglobulin assay was as follows: IgG-6000 mg/dl, IgA-150 mg/dl, IgM-410 mg/dl, IgE-0 mg/dl. Serum electrolytes were within normal limits. Urine didn't include Bence-Jones protein. The patient was diagnosed as multiple myeloma suffering from intracranial hypertension caused by large tumor which developed in the left parietal bone. On the operation, large tumor was existed in the epidural and subcutaneous space invading into the diploe but without infiltration into the dura mater or cerebral cortex.(ABSTRACT TRUNCATED AT 250 WORDS)
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Saito K, Fukuhara O, Miura M, Kumagai Y, Abe K, Onodera S, Miura T, Takahashi M, Iwabuchi T, Takasugi R. [Six families of familial cardiomyopathy]. J Cardiogr 1983; 13:1055. [PMID: 6687228] [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: 01/21/2023]
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Saito K, Abe K, Onodera S, Miura T, Takahashi M, Iwabuchi T, Takasugi R. [Phase analysis of left atrial myxoma]. J Cardiogr 1983; 13:204. [PMID: 6644110] [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: 01/21/2023]
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Arai S, Takishima T, Kosaka S, Kanazawa T, Takahashi H, Hamajima A, Nishimura H, Yoshida T, Tamura T, Usui Y, Takasugi R, Iwabuchi T, Ise T, Ishii M, Tadokoro K, Matsumoto N, Sato S, Saito K, Sato T, Kudo K, Mori S, Shimanuki K, Ito K, Ishihara T, Maeda T, Tsuiki K, Takahashi K, Kimura H, Saito K, Ishikawa H, Kanehara A. [Studies on the clinical effect of ceftezole (Falomesin 'Chugai') in respiratory- and urinary-tract infections (author's transl)]. Jpn J Antibiot 1978; 31:625-32. [PMID: 731858] [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: 12/24/2022]
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