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Kawasaki H, Hariyama T, Kosugi I, Meguro S, Iwata F, Shimizu K, Magata Y, Iwashita T. Human induced pluripotent stem cells are resistant to human cytomegalovirus infection primarily at the attachment level due to the reduced expression of cell-surface heparan sulfate. J Virol 2024; 98:e0127823. [PMID: 38345384 PMCID: PMC10949504 DOI: 10.1128/jvi.01278-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/16/2024] [Indexed: 03/20/2024] Open
Abstract
Cytomegalovirus (CMV), a type of herpes virus, is the predominant cause of congenital anomalies due to intrauterine infections in humans. Adverse outcomes related to intrauterine infections with human cytomegalovirus (HCMV) vary widely, depending on factors such as fetal infection timing, infection route, and viral virulence. The precise mechanism underlying HCMV susceptibility remains unclear. In this study, we compared the susceptibility of neonatal human dermal fibroblast cells (NHDFCs) and human induced pluripotent stem cells (hiPSCs) derived from NHDFCs, which are genetically identical to HCMV, using immunostaining, microarray, in situ hybridization, quantitative PCR, and scanning electron microscopy. These cells were previously used to compare CMV susceptibility, but the underlying mechanisms were not fully elucidated. HCMV susceptibility of hiPSCs was significantly lower in the earliest phase. No shared gene ontologies were observed immediately post-infection between the two cell types using microarray analysis. Early-stage expression of HCMV antigens and the HCMV genome was minimal in immunostaining and in in situ hybridization in hiPSCs. This strongly suggests that HCMV does not readily bind to hiPSC surfaces. Scanning electron microscopy performed using the NanoSuit method confirmed the scarcity of HCMV particles on hiPSC surfaces. The zeta potential and charge mapping of the charged surface in NHDFCs and hiPSCs exhibited minimal differences when assessed using zeta potential analyzer and scanning ion conductance microscopy; however, the expression of heparan sulfate (HS) was significantly lower in hiPSCs compared with that in NHDFCs. Thus, HS expression could be a primary determinant of HCMV resistance in hiPSCs at the attachment level. IMPORTANCE Numerous factors such as attachment, virus particle entry, transcription, and virus particle egress can affect viral susceptibility. Since 1984, pluripotent cells are known to be CMV resistant; however, the exact mechanism underlying this resistance remains elusive. Some researchers suggest inhibition in the initial phase of HCMV binding, while others have suggested the possibility of a sufficient amount of HCMV entering the cells to establish latency. This study demonstrates that HCMV particles rarely attach to the surfaces of hiPSCs. This is not due to limitations in the electrostatic interactions between the surface of hiPSCs and HCMV particles, but due to HS expression. Therefore, HS expression should be recognized as a key factor in determining the susceptibility of HCMV in congenital infection in vitro and in vivo. In the future, drugs targeting HS may become crucial for the treatment of congenital CMV infections. Thus, further research in this area is warranted.
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Affiliation(s)
- Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Takahiko Hariyama
- Institute for NanoSuit Research, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Futoshi Iwata
- Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka, Japan
| | - Kosuke Shimizu
- Department of Molecular Imaging, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yasuhiro Magata
- Department of Molecular Imaging, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
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Suzuki D, Meguro S, Furusawa S, Hashimoto N, Kawasaki H, Kosugi I, Enomoto Y, Fujihiro M, Tsukui H, Iwashita T. An autopsy case of disseminated carcinomatosis of the bone marrow from esophageal adenocarcinoma. Clin Case Rep 2023; 11:e7877. [PMID: 37744630 PMCID: PMC10511695 DOI: 10.1002/ccr3.7877] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/16/2023] [Accepted: 08/23/2023] [Indexed: 09/26/2023] Open
Abstract
Key Clinical Message Disseminated carcinomatosis of the bone marrow is rare. We present such a case, which is useful for raising awareness about the importance of early diagnosis and treatment of carcinomas complicated by disseminated carcinomatosis of the bone marrow. Abstract This is the first autopsy report of disseminated carcinomatosis of the bone marrow (DCBM) in esophageal adenocarcinoma. Advanced poorly differentiated adenocarcinoma with signet ring cell carcinoma arising in Barrett's esophagus caused disseminated intravascular coagulation (DIC) with extensive bone marrow metastasis, resulting in death from cerebral hemorrhage. Although DCBM due to malignancy is rare with poor prognosis, it should be considered in malignancies associated with DIC, and prompt initiation of chemotherapy is the only way to improve the patient's prognosis.
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Affiliation(s)
- Daisuke Suzuki
- Department of Diagnostic PathologyChutoen General Medical CenterShizuokaJapan
| | - Shiori Meguro
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Shin Furusawa
- Department of NephrologyChutoen General Medical CenterShizuokaJapan
| | - Nanako Hashimoto
- Department of RadiologyChutoen General Medical CenterShizuokaJapan
| | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research CenterHamamatsu University School of MedicineShizuokaJapan
| | - Isao Kosugi
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Mayu Fujihiro
- Department of Diagnostic PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Hiroe Tsukui
- Department of Diagnostic PathologyHamamatsu University School of MedicineShizuokaJapan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineShizuokaJapan
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3
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Kurita Y, Meguro S, Tsuyama N, Kosugi I, Enomoto Y, Kawasaki H, Uemura T, Kimura M, Iwashita T. Accurate deep learning model using semi-supervised learning and Noisy Student for cervical cancer screening in low magnification images. PLoS One 2023; 18:e0285996. [PMID: 37200281 DOI: 10.1371/journal.pone.0285996] [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] [Received: 01/25/2023] [Accepted: 05/07/2023] [Indexed: 05/20/2023] Open
Abstract
Deep learning technology has been used in the medical field to produce devices for clinical practice. Deep learning methods in cytology offer the potential to enhance cancer screening while also providing quantitative, objective, and highly reproducible testing. However, constructing high-accuracy deep learning models necessitates a significant amount of manually labeled data, which takes time. To address this issue, we used the Noisy Student Training technique to create a binary classification deep learning model for cervical cytology screening, which reduces the quantity of labeled data necessary. We used 140 whole-slide images from liquid-based cytology specimens, 50 of which were low-grade squamous intraepithelial lesions, 50 were high-grade squamous intraepithelial lesions, and 40 were negative samples. We extracted 56,996 images from the slides and then used them to train and test the model. We trained the EfficientNet using 2,600 manually labeled images to generate additional pseudo labels for the unlabeled data and then self-trained it within a student-teacher framework. Based on the presence or absence of abnormal cells, the created model was used to classify the images as normal or abnormal. The Grad-CAM approach was used to visualize the image components that contributed to the classification. The model achieved an area under the curve of 0.908, accuracy of 0.873, and F1-score of 0.833 with our test data. We also explored the optimal confidence threshold score and optimal augmentation approaches for low-magnification images. Our model efficiently classified normal and abnormal images at low magnification with high reliability, making it a promising screening tool for cervical cytology.
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Affiliation(s)
- Yuki Kurita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Naoko Tsuyama
- Division of Pathology, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takashi Uemura
- Department of Pathology, JA Shizuoka Kohseiren Enshu Hospital, Hamamatsu, Shizuoka, Japan
| | - Michio Kimura
- Department of Medical Informatics, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
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Suzuki D, Meguro S, Inagaki K, Hashimoto M, Kawasaki H, Kosugi I, Enomoto Y, Sugiyama M, Fukushima M, Iwashita T. An autopsy case of ovarian mucinous cystic tumor complicated by ovarian abscess and a review of the English literature. Clin Case Rep 2022; 10:e6507. [DOI: 10.1002/ccr3.6507] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/25/2022] [Accepted: 10/09/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Daisuke Suzuki
- Division of Diagnostic Pathology Chutouen General Hospital Kakegawa Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Koji Inagaki
- Division of Nephrology Chutouen General Hospital Kakegawa Japan
| | | | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center Hamamatsu University School of Medicine Hamamatsu Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Miho Sugiyama
- Division of Diagnostic Pathology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Mayu Fukushima
- Division of Diagnostic Pathology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology Hamamatsu University School of Medicine Hamamatsu Japan
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5
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Arai K, Matsuda M, Nakayasu H, Meguro S, Kurokami T, Kubota A, Iwasaki T, Suzuki M, Kawaguchi S, Iwashita T. Nivolumab-induced liver injury with a steroid-refractory increase in biliary enzymes, in a patient with malignant mesothelioma: An autopsy case report. Clin Case Rep 2021; 9:e05174. [PMID: 34987810 PMCID: PMC8697699 DOI: 10.1002/ccr3.5174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/27/2021] [Revised: 09/29/2021] [Accepted: 11/07/2021] [Indexed: 12/19/2022] Open
Abstract
This is the first autopsy report of hepatotoxicity from nivolumab immunotherapy for malignant mesothelioma. The increase in levels of biliary enzymes and randomly distributed endothelial damage were steroid-refractory, but second-line option was abandoned because of cachexia. Further discussions are needed regarding the customized management of immune-related toxicities.
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Affiliation(s)
- Kazumori Arai
- Department of PathologyShizuoka General HospitalShizuokaJapan
| | - Masanori Matsuda
- Department of GastroenterologyShizuoka General HospitalShizuokaJapan
| | - Hiromasa Nakayasu
- Department of Respiratory MedicineShizuoka General HospitalShizuokaJapan
| | - Shiori Meguro
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineHamamatsuJapan
| | - Takafumi Kurokami
- Department of GastroenterologyShizuoka General HospitalShizuokaJapan
| | - Aki Kubota
- Department of PathologyShizuoka General HospitalShizuokaJapan
| | | | - Makoto Suzuki
- Department of PathologyShizuoka General HospitalShizuokaJapan
| | - Shinya Kawaguchi
- Department of GastroenterologyShizuoka General HospitalShizuokaJapan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious PathologyHamamatsu University School of MedicineHamamatsuJapan
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6
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Aoshima Y, Enomoto Y, Fukada A, Kurita Y, Matsushima S, Meguro S, Kosugi I, Kawasaki H, Katsura H, Fujisawa T, Enomoto N, Nakamura Y, Inui N, Suda T, Iwashita T. Metformin reduces pleural fibroelastosis by inhibition of extracellular matrix production induced by CD90-positive myofibroblasts. Am J Transl Res 2021; 13:12318-12337. [PMID: 34956455 PMCID: PMC8661163] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/01/2021] [Indexed: 06/14/2023]
Abstract
Metformin, an AMP-activated protein kinase activator used to treat diabetes mellitus, has recently attracted attention as a promising anti-fibrotic agent. However, its anti-fibrotic effects on pleural fibroelastosis remain unknown. We induced mouse pleural fibroelastosis by intra-pleural coadministration of bleomycin and carbon and evaluated its validity as a preclinical model for human pleural fibrosis. We assessed the expression of the myofibroblast surface marker CD90 in the fibrotic pleura and the effects of metformin in vivo and in vitro. Finally, we evaluated the effects of metformin on human pleural mesothelial cells stimulated by transforming growth factor β1 (TGFβ1). The fibrotic pleura in mice had collagen and elastin fiber deposition similar to that seen in human fibrotic pleura. Moreover, CD90-positive myofibroblasts were detected in and successfully isolated from the fibrotic pleura. Metformin significantly suppressed the deposition of collagen and elastic fibers in the fibrotic pleura and decreased the expression of extracellular matrix (ECM)-related genes, including Col1a1, Col3a1, Fn1, and Eln, in pleural CD90-positive myofibroblasts. In human pleural mesothelial cells, metformin decreased TGFβ1-induced upregulation of ECM-related genes and SNAI1. Overall, metformin suppresses pleural fibroelastosis by inhibition of ECM production by pleural myofibroblasts, suggesting that this drug has therapeutic potential against human pleural fibrosis, including pleuroparenchymal fibroelastosis.
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Affiliation(s)
- Yoichiro Aoshima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR)Kobe 650-0047, Japan
| | - Atsuki Fukada
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Yuki Kurita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Preeminent Medical Photonics Education and Research Center Institute for NanoSuit Research, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Hiroaki Katsura
- Laboratory for Lung Development and Regeneration, Riken Center for Biosystems Dynamics Research (BDR)Kobe 650-0047, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of MedicineShizuoka 431-3192, Japan
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Ooishi M, Yamada S, Itoh T, Meguro S, Yagi H, Kosugi I, Iwashita T, Shinmura K, Misawa K, Hariyama T, Kawasaki H. Diagnosis of Ion-Exchange Resin Depositions in Paraffin Sections Using Corrective Light and Electron Microscopy-NanoSuit Method. Diagnostics (Basel) 2021; 11:diagnostics11071193. [PMID: 34209027 PMCID: PMC8304092 DOI: 10.3390/diagnostics11071193] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 12/28/2022] Open
Abstract
Ion-exchange resins are commonly used to treat complications such as hyperkalemia, hyperphosphatemia, and hypercholesterolemia. Gastrointestinal complications may occur as side effects of such treatments. Sodium and calcium polystyrene sulfonate (PS-Ca) are cation-exchange resins comprising an insoluble structure that binds to potassium ions in the digestive tract and exchanges them with sodium and calcium ions, respectively, to promote their elimination. PS crystals are rhomboid, refractive, and basophilic in hematoxylin and eosin staining. To differentiate PS crystals from other ion-exchange resin crystals such as sevelamer and cholestyramine, periodic acid-Schiff, Ziehl-Neelsen, and Congo red staining are usually performed. Here, correlative light and electron microscopy (CLEM)-energy-dispersive X-ray spectroscopy and the NanoSuit method (CENM) was applied to perform a definitive identification of ion-exchange resins. CENM could detect sulfur in PS crystals without destroying the glass slides. Notably, PS retained its ion-exchange ability to bind potassium in paraffin sections. Differential diagnosis of anion-exchange resins, such as sevelamer and cholestyramine, was possible using these characteristics. The phosphorus:carbon ratio was higher in sevelamer than in cholestyramine after soaking paraffin sections in a phosphate solution. Therefore, CENM may be used for the differential pathological diagnosis of ion-exchange resins in paraffin sections.
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Affiliation(s)
- Mako Ooishi
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (M.O.); (T.H.)
| | - Satoshi Yamada
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.Y.); (K.M.)
| | - Toshiya Itoh
- Department of Obstetrics and Gynecology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan;
| | - Shiori Meguro
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.M.); (H.Y.); (I.K.); (T.I.)
| | - Haruna Yagi
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.M.); (H.Y.); (I.K.); (T.I.)
| | - Isao Kosugi
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.M.); (H.Y.); (I.K.); (T.I.)
| | - Toshihide Iwashita
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.M.); (H.Y.); (I.K.); (T.I.)
| | - Kazuya Shinmura
- Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan;
| | - Kiyoshi Misawa
- Department of Otolaryngology/Head and Neck Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (S.Y.); (K.M.)
| | - Takahiko Hariyama
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (M.O.); (T.H.)
| | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan; (M.O.); (T.H.)
- Correspondence: ; Tel.: +81-53-435-2504
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Yagi H, Nakaguro M, Ito M, Okumura Y, Takahashi S, Aoshima Y, Enomoto Y, Meguro S, Kawasaki H, Kosugi I, Shimoyama Y, Ogawa H, Tateyama H, Iwashita T. Difference in the distribution of tumor-infiltrating CD8+ T cells and FOXP3+ T cells between micronodular thymoma with lymphoid stroma and micronodular thymic carcinoma with lymphoid stroma. Pathol Int 2021; 71:453-462. [PMID: 33819365 PMCID: PMC8359975 DOI: 10.1111/pin.13099] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 03/14/2021] [Indexed: 11/30/2022]
Abstract
Micronodular thymoma with lymphoid stroma (MNT) is a rare thymic epithelial neoplasm subtype characterized by a micronodular tumor cell growth pattern and abundant lymphoid stroma. Micronodular thymic carcinoma with lymphoid stroma (MNCA) is considered as a malignant counterpart of MNT and exhibits a growth pattern similar to that of MNT but has histologic features reminiscent of thymic squamous cell carcinoma, such as cytologic atypia and CD5 and CD117 immunoexpression. Although both MNT and MNCA are characterized by abundant lymphoid stroma, it remains unknown whether there are differences in infiltrating lymphocytes between MNT and MNCA. We analyzed the immune microenvironment profile in eight MNT and three MNCA cases. The cell density of CD8‐positive T cells was significantly higher in MNT than in MNCA, whereas that of FOXP3‐positive T cells was significantly higher in MNCA than in MNT. There was no significant difference in the cell density of programmed death protein 1‐positive T cells and programmed death ligand 1 expression between the MNT and MNCA cases. Our findings indicated that the immune microenvironment of MNCA differed from that of MNT and, compared with the T‐cell profile of MNT, that of MNCA was more suppressive to patients′ antitumor immune response.
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Affiliation(s)
- Haruna Yagi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masato Nakaguro
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Masafumi Ito
- Department of Pathology, Japanese Red Cross, Nagoya First Hospital, Nagoya, Japan
| | - Yuki Okumura
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Seishiro Takahashi
- Department of Diagnostic Pathology, Seirei Mikatahara Hospital, Hamamatsu, Japan
| | - Yoichiro Aoshima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hideya Kawasaki
- Institute for NanoSuit Research, Preeminent Medical Photonics Education and Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshie Shimoyama
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Hiroshi Ogawa
- Department of Diagnostic Pathology, Seirei Mikatahara Hospital, Hamamatsu, Japan
| | - Hisashi Tateyama
- Department of Pathology, Clinical Laboratory, Kasugai Municipal Hospital, Kasugai, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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9
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Aoshima Y, Enomoto Y, Muto S, Meguro S, Kawasaki H, Kosugi I, Fujisawa T, Enomoto N, Inui N, Nakamura Y, Suda T, Iwashita T. Gremlin-1 for the Differential Diagnosis of Idiopathic Pulmonary Fibrosis Versus Other Interstitial Lung Diseases: A Clinical and Pathophysiological Analysis. Lung 2021; 199:289-298. [PMID: 33770226 PMCID: PMC8203516 DOI: 10.1007/s00408-021-00440-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/11/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The differential diagnosis of interstitial lung diseases (ILDs), particularly idiopathic pulmonary fibrosis (IPF) versus other non-IPF ILDs, is important for selecting the appropriate treatment. This retrospective study aimed to explore the utility of gremlin-1 for the differential diagnosis. METHODS Serum gremlin-1 concentrations were measured using an ELISA in 50 patients with IPF, 42 patients with non-IPF ILD, and 30 healthy controls. The baseline clinical data, including pulmonary functions, prognosis, and three serum biomarkers (Krebs von den Lungen-6 [KL6], surfactant protein-D [SP-D], and lactate dehydrogenase [LDH]), were obtained through a medical record review for analyzing their associations with serum gremlin-1 concentrations. To evaluate the origin of gremlin-1, we performed immunostaining on lung sections. RESULTS Serum gremlin-1 concentrations were significantly higher in patients with IPF (mean concentration, 14.4 ng/mL), followed by those with non-IPF ILD (8.8 ng/mL) and healthy controls (1.6 ng/mL). The area under the curve for IPF versus non-IPF ILDs was 0.759 (95% confidence interval, 0.661-0.857), which was superior to that of KL6/SP-D/LDH. The sensitivity and specificity for gremlin-1 (cutoff, 10.4 ng/mL) was 72 and 69%, respectively. By contrast, serum gremlin-1 concentrations were not associated with the pulmonary functions nor the prognosis in all patients with ILDs. In immunostaining, the gremlin-1 was broadly upregulated in IPF lungs, particularly at myofibroblasts, bronchiolar/alveolar epithelium, and CD163-positive M2-like macrophages. CONCLUSIONS Gremlin-1 may be a useful biomarker to improve the diagnostic accuracy for IPF compared to non-IPF ILDs, suggesting a role of this molecule in the pathogenesis of IPF.
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Affiliation(s)
- Yoichiro Aoshima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan.
| | - Shigeki Muto
- Department of Health Care, Seirei Center for Health Promotion and Preventive Medicine, Hamamatsu, Shizuoka, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3192, Japan
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10
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Meguro S, Suzuki D, Kawai T, Kyokane T, Aoshima Y, Enomoto Y, Yagi H, Kawasaki H, Kosugi I, Tsukui H, Baba S, Iwashita T. A case of an alpha-fetoprotein-producing gastric so-called carcinosarcoma with enteroblastic differentiation. Human Pathology: Case Reports 2020. [DOI: 10.1016/j.ehpc.2020.200420] [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: 02/07/2023] Open
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11
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Meguro S, Kusama Y, Matsushima S, Yagi H, Kawasaki H, Kosugi I, Tsuchida T, Baba S, Enomoto Y, Hosokawa S, Iwashita T. Nasal glomus tumor: A rare nasal tumor with diffuse and strongly positive synaptophysin expression. Pathol Int 2020; 69:672-674. [PMID: 31682049 PMCID: PMC6899972 DOI: 10.1111/pin.12866] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 09/28/2019] [Indexed: 11/27/2022]
Affiliation(s)
- Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yukiko Kusama
- Division of Diagnostic Pathology, Nagano Municipal Hospital, Nagano, Japan
| | - Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Haruna Yagi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Takashi Tsuchida
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Satoshi Baba
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Seiji Hosokawa
- Department of Otorhinolaryngology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
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12
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Suzuki D, Meguro S, Watanabe Y, Kawai T, Kyokane T, Aoshima Y, Enomoto Y, Kawasaki H, Yagi H, Kosugi I, Fukushima M, Baba S, Iwashita T. Incidentally discovered mesenteric paraganglia as large as a lymph node in the sigmoid mesocolon, a possible origin of mesenteric paraganglioma. Pathol Int 2020; 70:476-478. [PMID: 32342607 PMCID: PMC7384147 DOI: 10.1111/pin.12939] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/25/2020] [Accepted: 04/11/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Daisuke Suzuki
- Department of Diagnostic Pathology, Chutoen General Medical Center, Shizuoka, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yuki Watanabe
- Department of Surgery, Chutoen General Medical Center, Shizuoka, Japan
| | - Toru Kawai
- Department of Surgery, Chutoen General Medical Center, Shizuoka, Japan
| | - Takanori Kyokane
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Yoichiro Aoshima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Haruna Yagi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Mayu Fukushima
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Satoshi Baba
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
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13
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Matsushima S, Aoshima Y, Akamatsu T, Enomoto Y, Meguro S, Kosugi I, Kawasaki H, Fujisawa T, Enomoto N, Nakamura Y, Inui N, Funai K, Suda T, Iwashita T. CD248 and integrin alpha-8 are candidate markers for differentiating lung fibroblast subtypes. BMC Pulm Med 2020; 20:21. [PMID: 31964365 PMCID: PMC6975017 DOI: 10.1186/s12890-020-1054-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 05/03/2019] [Accepted: 01/13/2020] [Indexed: 12/31/2022] Open
Abstract
Background Lung fibrosis is a serious life-threatening condition whose manifestation varies according to the localization and characteristics of fibroblasts, which are considered heterogeneous. Therefore, to better understand the pathology and improve diagnosis and treatment of this disease, it is necessary to elucidate the nature of this heterogeneity and identify markers for the accurate classification of human lung fibroblast subtypes. Methods We characterized distinct mouse lung fibroblast subpopulations isolated by fluorescence-activated cell sorting (FACS) and performed microarray analysis to identify molecular markers that could be useful for human lung fibroblast classification. Based on the expression of these markers, we evaluated the fibroblast-like cell subtype localization in normal human lung samples and lung samples from patients with idiopathic pulmonary fibrosis (IPF). Results Mouse lung fibroblasts were classified into Sca-1high fibroblasts and Sca-1low fibroblasts by in vitro biological analyses. Through microarray analysis, we demonstrated CD248 and integrin alpha-8 (ITGA8) as cell surface markers for Sca-1high fibroblasts and Sca-1low fibroblasts, respectively. In mouse lungs, Sca-1high fibroblasts and Sca-1low fibroblasts were localized in the collagen fiber-rich connective tissue and elastic fiber-rich connective tissue, respectively. In normal human lungs and IPF lungs, two corresponding major fibroblast-like cell subtypes were identified: CD248highITGA8low fibroblast-like cells and CD248lowITGA8high fibroblast-like cells, localized in the collagen fiber-rich connective tissue and in the elastic fiber-rich connective tissue, respectively. Conclusion CD248highITGA8low fibroblast-like cells and CD248lowITGA8high fibroblast-like cells were localized in an almost exclusive manner in human lung specimens. This human lung fibroblast classification using two cell surface markers may be helpful for further detailed investigations of the functions of lung fibroblast subtypes, which can provide new insights into lung development and the pathological processes underlying fibrotic lung diseases.
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Affiliation(s)
- Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan.,Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Yoichiro Aoshima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan.,Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Taisuke Akamatsu
- Division of Respiratory Medicine, Shizuoka General Hospital, 4-27-1 Kita Ando Aoi-ku, Shizuoka City, Shizuoka, 420-8527, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan.,Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Naoki Inui
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Kazuhito Funai
- First Department of Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu City, Shizuoka, 431-3192, Japan.
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14
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Meguro S, Matsushima S, Enomoto Y, Kawasaki H, Kosugi I, Tsuchida T, Baba S, Fukamizu H, Yamato Y, Iwashita T. Immunohistochemical examination using the pericyte marker myosin 1B in a perivascular myoid tumor of soft tissue with definitive pericytic differentiation. Pathol Int 2019; 69:246-248. [PMID: 30791193 PMCID: PMC6850187 DOI: 10.1111/pin.12777] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Takashi Tsuchida
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Satoshi Baba
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Shizuoka, Japan
| | - Hidekazu Fukamizu
- Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yu Yamato
- Department of Orthopediatric Surgery, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
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15
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Horikawa H, Kurihara Y, Funakoshi T, Umegaki-Arao N, Takahashi H, Kubo A, Tanikawa A, Kodani N, Minami Y, Meguro S, Itoh H, Izumi K, Nishie W, Shimizu H, Amagai M, Yamagami J. Unique clinical and serological features of bullous pemphigoid associated with dipeptidyl peptidase-4 inhibitors. Br J Dermatol 2018; 178:1462-1463. [PMID: 29478242 DOI: 10.1111/bjd.16479] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- H Horikawa
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - T Funakoshi
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - N Umegaki-Arao
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - H Takahashi
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - A Kubo
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - A Tanikawa
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - N Kodani
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.,Center for Preventative Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Y Minami
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - S Meguro
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - H Itoh
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - K Izumi
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - W Nishie
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - J Yamagami
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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16
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Enomoto Y, Matsushima S, Meguro S, Kawasaki H, Kosugi I, Fujisawa T, Enomoto N, Inui N, Nakamura Y, Suda T, Iwashita T. Podoplanin-positive myofibroblasts: a pathological hallmark of pleuroparenchymal fibroelastosis. Histopathology 2018; 72:1209-1215. [PMID: 29468722 DOI: 10.1111/his.13494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 11/29/2017] [Accepted: 02/15/2018] [Indexed: 01/28/2023]
Abstract
Pathological differential diagnoses of pleuroparenchymal fibroelastosis (PPFE) include usual interstitial pneumonia (UIP) and pulmonary apical cap (PAC); however, there are no specific immunostaining makers to distinguish between these diseases. We performed immunohistochemistry using several pleural mesothelial cell-related markers, including cytokeratin-5/6, CAM5.2, WT-1, calretinin, desmin and podoplanin, for PPFE (n = 4), UIP (n = 10) and PAC (n = 3) lung sections. Among the examined markers, in PPFE and PAC lungs podoplanin commonly showed positivity for spindle cells both in thickened pleura and subpleural fibroelastosis lesions; these cells were also stained with α-smooth muscle actin, a marker of myofibroblasts. However, even in elastic fibre-rich cases, UIP lungs did not show such podoplanin-positive myofibroblasts in pleura/subpleura and fibroblastic foci. These findings were also verified using immunofluorescence. By contrast, immunohistochemically as well as morphologically, the difference between PPFE and PAC was not apparent. The presence of podoplanin-positive myofibroblasts could be a pathological hallmark of PPFE, suggesting a pathogenic process distinct from UIP but common to PAC.
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Affiliation(s)
- Yasunori Enomoto
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan.,Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan.,Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Shizuoka, Japan
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17
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Sekizuka A, Tazumi A, Nakanish S, Meguro S, Kakinuma Y, Misawa N, Moore J, Millar B, Matsuda M. Absence of intervening sequences (IVSs) in helix 11 region within 16S rRNA genes among more than 240 isolates of the seven Campylobacter species. Br J Biomed Sci 2018; 66:103-6. [DOI: 10.1080/09674845.2009.11978147] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- A. Sekizuka
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
| | - A. Tazumi
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
| | - S. Nakanish
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
| | - S. Meguro
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
| | - Y. Kakinuma
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
| | - N. Misawa
- Department of Veterinary Public Health, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - J.E. Moore
- Department of Bacteriology, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, Northern Ireland, UK
| | - B.C. Millar
- Department of Bacteriology, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, Northern Ireland, UK
| | - M. Matsuda
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara
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18
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Meguro S, Yamazaki S, Matsushima S, Kawata K, Kawasaki H, Tsuchida T, Kosugi I, Kobayashi Y, Baba S, Iwashita T. A case of a primary hepatic so-called adenosarcoma with heterotopic ossification: possibly of biliary adenofibroma origin. Hum Pathol 2017; 73:108-113. [PMID: 29079182 DOI: 10.1016/j.humpath.2017.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 07/07/2017] [Revised: 09/30/2017] [Accepted: 10/09/2017] [Indexed: 12/27/2022]
Abstract
We present an autopsy case of a "so-called adenosarcoma with ossification of the liver" in a 63-year-old man. Macroscopically, the well-circumscribed tumor with portal vein invasion was observed in the right lobe of the liver. The cut surface of the tumor had a solid and microcystic appearance. Microscopically, the tumor was characterized by a benign epithelial component and a malignant mesenchymal component. We believe the presence of biliary adenofibroma-like areas and the von Meyenburg complexes suggests that the tumor is possibly associated with a biliary adenofibroma. In addition, the present tumor was unique in that it showed scattered heterotopic ossification. Immunohistochemical study showed that the mesenchymal atypical spindle cells had characteristics of undifferentiated mesenchymal cells. This is the first report of a primary hepatic so-called adenosarcoma.
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Affiliation(s)
- Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan.
| | - Satoru Yamazaki
- Department of Hepatology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Sayomi Matsushima
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Kazuhito Kawata
- Department of Hepatology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Takashi Tsuchida
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Yoshimasa Kobayashi
- Department of Hepatology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Satoshi Baba
- Department of Diagnostic Pathology, Hamamatsu University Hospital, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, 431-3192, Japan
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Meguro S, Akamatsu T, Matsushima S, Kosugi I, Kawasaki H, Arai Y, Baba S, Tsuchida T, Shido Y, Suda T, Iwashita T. Phenotypic characterization of perivascular myoid cell neoplasms, using myosin 1B, a newly identified human pericyte marker. Hum Pathol 2017; 62:187-198. [DOI: 10.1016/j.humpath.2016.12.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 12/29/2016] [Accepted: 12/30/2016] [Indexed: 11/25/2022]
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Kawasaki H, Kosugi I, Meguro S, Iwashita T. Pathogenesis of developmental anomalies of the central nervous system induced by congenital cytomegalovirus infection. Pathol Int 2017; 67:72-82. [PMID: 28074532 DOI: 10.1111/pin.12502] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 08/08/2016] [Accepted: 12/08/2016] [Indexed: 01/23/2023]
Abstract
In humans, the herpes virus family member cytomegalovirus (CMV) is the most prevalent mediator of intrauterine infection-induced congenital defect. Central nervous system (CNS) dysfunction is a distinguishing symptom of CMV infection, and characterized by ventriculoencephalitis and microglial nodular encephalitis. Reports on the initial distribution of CMV particles and its receptors on the blood brain barrier (BBB) are rare. Nevertheless, several factors are suggested to affect CMV etiology. Viral particle size is the primary factor in determining the pattern of CNS infections, followed by the expression of integrin β1 in endothelial cells, pericytes, meninges, choroid plexus, and neural stem progenitor cells (NSPCs), which are the primary targets of CMV infection. After initial infection, CMV disrupts BBB structural integrity to facilitate the spread of viral particles into parenchyma. Then, the initial meningitis and vasculitis eventually reaches NSPC-dense areas such as ventricular zone and subventricular zone, where viral infection inhibits NSPC proliferation and differentiation and results in neuronal cell loss. These cellular events clinically manifest as brain malformations such as a microcephaly. The purpose of this review is to clearly delineate the pathophysiological basis of congenital CNS anomalies caused by CMV.
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Affiliation(s)
- Hideya Kawasaki
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Isao Kosugi
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shiori Meguro
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Toshihide Iwashita
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Kawasaki H, Kosugi I, Sakao-Suzuki M, Meguro S, Tsutsui Y, Iwashita T. Intracerebroventricular and Intravascular Injection of Viral Particles and Fluorescent Microbeads into the Neonatal Brain. J Vis Exp 2016. [PMID: 27501398 DOI: 10.3791/54164] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In the study on the pathogenesis of viral encephalitis, the infection method is critical. The first of the two main infectious routes to the brain is the hematogenous route, which involves infection of the endothelial cells and pericytes of the brain. The second is the intracerebroventricular (ICV) route. Once within the central nervous system (CNS), viruses may spread to the subarachnoid space, meninges, and choroid plexus via the cerebrospinal fluid. In experimental models, the earliest stages of CNS viral distribution are not well characterized, and it is unclear whether only certain cells are initially infected. Here, we have analyzed the distribution of cytomegalovirus (CMV) particles during the acute phase of infection, termed primary viremia, following ICV or intravascular (IV) injection into the neonatal mouse brain. In the ICV injection model, 5 µl of murine CMV (MCMV) or fluorescent microbeads were injected into the lateral ventricle at the midpoint between the ear and eye using a 10-µl syringe with a 27 G needle. In the IV injection model, a 1-ml syringe with a 35 G needle was used. A transilluminator was used to visualize the superficial temporal (facial) vein of the neonatal mouse. We infused 50 µl of MCMV or fluorescent microbeads into the superficial temporal vein. Brains were harvested at different time points post-injection. MCMV genomes were detected using the in situ hybridization method. Fluorescent microbeads or green fluorescent protein expressing recombinant MCMV particles were observed by fluorescent microscopy. These techniques can be applied to many other pathogens to investigate the pathogenesis of encephalitis.
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Affiliation(s)
- Hideya Kawasaki
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine;
| | - Isao Kosugi
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine
| | | | - Shiori Meguro
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine
| | | | - Toshihide Iwashita
- Department of Regenerative & Infectious Pathology, Hamamatsu University School of Medicine
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Tazumi A, Nakanishi S, Meguro S, Kakinuma Y, Moore J, Millar BC, Matsuda M. Occurrence and characterisation of intervening sequences (IVSs) within 16S rRNA genes from two atypical Campylobacter species, C. sputorum and C. curvus. Br J Biomed Sci 2016; 67:77-81. [DOI: 10.1080/09674845.2010.11730295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- A. Tazumi
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - S. Nakanishi
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - S. Meguro
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - Y. Kakinuma
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
| | - J.E. Moore
- Department of Bacteriology, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, Northern Ireland, UK
| | - B. C. Millar
- Department of Bacteriology, Northern Ireland Public Health Laboratory, Belfast City Hospital, Belfast, Northern Ireland, UK
| | - M. Matsuda
- Laboratory of Molecular Biology, School of Environmental Health Sciences, Azabu University, Sagamihara, Japan
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Sakao-Suzuki M, Kawasaki H, Akamatsu T, Meguro S, Miyajima H, Iwashita T, Tsutsui Y, Inoue N, Kosugi I. Aberrant fetal macrophage/microglial reactions to cytomegalovirus infection. Ann Clin Transl Neurol 2014; 1:570-88. [PMID: 25356429 PMCID: PMC4184560 DOI: 10.1002/acn3.88] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 07/07/2014] [Indexed: 12/20/2022] Open
Abstract
Objective Congenital cytomegalovirus (CMV) infection is the leading viral cause of neurodevelopmental disorders in humans, with the most severe and permanent sequelae being those affecting the cerebrum. As the fetal immune reactions to congenital CMV infection in the brain and their effects on cerebral development remain elusive, our aim was to investigate primitive innate immunity to CMV infection and its effects on cerebral corticogenesis in a mouse model for congenital CMV infection using a precise intraplacental inoculation method. Methods At 13.5 embryonic days (E13.5), pregnant C57BL/6 mice were intraplacentally infected with murine CMV (MCMV). Placentas and fetal organs were collected at 1, 3, and 5 days postinfection and analyzed. Results MCMV antigens were found frequently in perivascular macrophages, and subsequently in neural stem/progenitor cells (NSPCs). With increased expression of inducible nitric oxide synthase and proinflammatory cytokines, activated macrophages infiltrated into the infectious foci. In addition to the infected area, the numbers of both meningeal macrophages and parenchymal microglia increased even in the uninfected areas of MCMV-infected brain due to recruitment of their precursors from other sites. A bromodeoxyuridine (BrdU) incorporation experiment demonstrated that MCMV infection globally disrupted the self-renewal of NSPCs. Furthermore, BrdU-labeled neurons, particularly Brn2+ neurons of upper layers II/III in the cortical plate, decreased in number significantly in the MCMV-infected E18.5 cerebrum. Interpretation Brain macrophages are crucial for innate immunity during MCMV infection in the fetal brain, while their aberrant recruitment and activation may adversely impact on the stemness of NSPCs, resulting in neurodevelopmental disorders.
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Affiliation(s)
- Makiko Sakao-Suzuki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan ; Department of Neurology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Hideya Kawasaki
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Taisuke Akamatsu
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan ; Department of Respiratory Medicine, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Shiori Meguro
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Hiroaki Miyajima
- Department of Neurology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | - Toshihide Iwashita
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan
| | | | - Naoki Inoue
- Department of Microbiology and Immunology, Gifu Pharmaceutical University Gifu, Japan
| | - Isao Kosugi
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine Hamamatsu, Japan
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Imanishi J, Yazawa Y, Meguro S, Shimizu M. A bone metastasis of non-small cell lung carcinoma with prominent clear cell features. BMJ Case Rep 2014; 2014:bcr-2013-203357. [PMID: 24518396 DOI: 10.1136/bcr-2013-203357] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
We report the case of a 78-year-old man with multiple bone tumours and three round, smooth nodules in the right lung. He was referred to our hospital because of the left femoral neck pathological fracture. The histological characteristics of the femoral tumour corresponded to clear cell carcinoma, and bone and lung lesions were regarded as metastatic from an unknown primary site, since there was no clinical evidence of renal carcinoma. His general conditions gradually declined, and he died 2 months after the operation. At autopsy, no neoplasia lesion was found in the kidneys. Although clear cell components were histologically dominant in the affected organs such as the lungs, bones and liver, neoplastic tubular structures also existed. Immunohistochemically, atypical cells were positive for napsin-A. The final diagnosis was adenocarcinoma of the lung origin with prominent clear cell features.
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Affiliation(s)
- Jungo Imanishi
- Department of Orthopaedic Oncology and Surgery, Saitama Medical University International Medical Center, Hidaka, Saitama Prefecture, Japan
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Akamatsu T, Arai Y, Kosugi I, Kawasaki H, Meguro S, Sakao M, Shibata K, Suda T, Chida K, Iwashita T. Direct isolation of myofibroblasts and fibroblasts from bleomycin-injured lungs reveals their functional similarities and differences. Fibrogenesis Tissue Repair 2013; 6:15. [PMID: 23927729 PMCID: PMC3751789 DOI: 10.1186/1755-1536-6-15] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 07/08/2013] [Indexed: 02/06/2023]
Abstract
Background Myofibroblasts play a crucial role in tissue repair. The functional similarities and differences between myofibroblasts and fibroblasts are not fully understood because they have not been separately isolated from a living body. The purpose of this study was to establish a method for the direct isolation of myofibroblasts and fibroblasts from injured lungs by using fluorescence-activated cell sorting and to compare their functions. Results We demonstrated that lineage-specific cell surface markers (lin), such as CD31, CD45, CD146, EpCAM (CD326), TER119, and Lyve-1 were not expressed in myofibroblasts or fibroblasts. Fibroblasts of bleomycin-injured lungs and saline-treated lungs were shown to be enriched in linneg Sca-1high, and myofibroblasts of bleomycin-injured lungs were shown to be enriched in linneg Sca-1low CD49ehigh. Results from in-vitro proliferation assays indicated in-vitro proliferation of fibroblasts but not myofibroblasts of bleomycin-injured lungs and of fibroblasts of saline-treated lungs. However, fibroblasts and myofibroblasts might have a low proliferative capacity in vivo. Analysis of genes for collagen and collagen synthesis enzymes by qRT-PCR showed that the expression levels of about half of the genes were significantly higher in fibroblasts and myofibroblasts of bleomycin-injured lungs than in fibroblasts of saline-treated lungs. By contrast, the expression levels of 8 of 11 chemokine genes of myofibroblasts were significantly lower than those of fibroblasts. Conclusions This is the first study showing a direct isolation method of myofibroblasts and fibroblasts from injured lungs. We demonstrated functional similarities and differences between myofibroblasts and fibroblasts in terms of both their proliferative capacity and the expression levels of genes for collagen, collagen synthesis enzymes, and chemokines. Thus, this direct isolation method has great potential for obtaining useful information from myofibroblasts and fibroblasts.
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Affiliation(s)
- Taisuke Akamatsu
- Department of Regenerative and Infectious Pathology, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashi-ku, Hamamatsu, Japan.
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Meguro S, Yasuda M, Shimizu M, Kurosaki A, Fujiwara K. Mesonephric adenocarcinoma with a sarcomatous component, a notable subtype of cervical carcinosarcoma: a case report and review of the literature. Diagn Pathol 2013; 8:74. [PMID: 23651629 PMCID: PMC3652771 DOI: 10.1186/1746-1596-8-74] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 04/29/2013] [Indexed: 12/21/2022] Open
Abstract
Abstract Carcinosarcoma of the uterine cervix is less common than its counterpart in the uterine corpus. On the other hand, mesonephric adenocarcinoma is also a rare neoplasm in the uterine cervix, and it has been reported that mesonephric adenocarcinomas are often accompanied by sarcomatous components. We present a case of mesonephric adenocarcinoma with a sarcomatous component which arose in a 63-year-old postmenopausal woman. The hysterectomy specimen grossly showed an exophytic mass measuring 1.8 cm in the uterine cervix. Histologically, diffuse mesonephric hyperplasia and adenocarcinoma with malignant spindle cell proliferation was recognized, and therefore the tumor was diagnosed as “mesonephric adenocarcinoma with a sarcomatous component.” The review of the literature of cervical carcinosarcoma and cervical mesonephric adenocarcinoma revealed that 16% of cervical carcinosarcoma is of mesonephric duct origin, and that mesonephric adenocarcinoma seems to be more likely to have sarcomatous change. We think the presence of a sarcomatous component in the cervical biopsy specimen could be helpful in the diagnosis of mesonephric duct origin. Virtual slides The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1243996503911062
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Abstract
We report a rare case of ovarian leiomyoma with extensive edema in a 55-year-old woman. Magnetic resonance (MR) imaging revealed an ovarian mass with distinct portions of predominantly low intensity and predominantly high intensity on T2-weighted image. The portion with low signal showed weak enhancement on contrast study, and the portion with high intensity suggested extensive edema of fibrous stroma. Furthermore, the mass showed low signal intensity similar to that of the myometrium on diffusion-weighted image and yielded high values on apparent diffusion coefficient (ADC) map image. Extensive edema of ovarian leiomyoma shows unusual MR imaging findings that require careful interpretation.
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Affiliation(s)
- Eito Kozawa
- Department of Imaging Diagnosis, Saitama Medical University, International Medical Center, Saitama, Japan.
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Arai Y, Tsuchida T, Kosugi I, Kawasaki H, Meguro S, Kinoshita M, Baba S, Maeda M, Shinmura Y, Tsutsui Y, Iwashita T. Effects of intrapulmonary viral tropism and cytokine expression on the histological patterns of cytomegalovirus pneumonia. Pathol Int 2013; 62:628-39. [PMID: 22924849 PMCID: PMC3509368 DOI: 10.1111/j.1440-1827.2012.02849.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pulmonary cytomegalovirus (CMV) infection causes fatal CMV pneumonia (CMVp) in Immunocompromised patients; however, the mechanisms underlying CMV-Infection-Induced pulmonary lesion development remain largely unknown. We examined the relationship between CMVp patterns and Intrapulmonary viral tropism, Including expression of Inflammatory cytokines and related molecules. Double Immunohistochemistry of CMV antigen and cellular markers showed that epithelial tropism was associated with a diffuse alveolar damage (DAD) pattern (CMVp-DAD) while stromal tropism was associated with a predominantly interstitial inflammation/fibrosis (IIF) (CMVp-IIF) or a combination of DAD and IIF (CMVp-complex). Transforming growth factor (TGF)-β1 expression was relevant to CMV-induced tissue injury, and its expression was higher in CMVp-complex and CMVp-IIF than in CMVp-DAD. Expression of integrin β6 (ITGB6), an adhesion molecule and important activator of TGF-β1 in interstitial pneumonia, was lost in CMV-infected pneumocytes, especially CMVp-DAD, whereas CMV-negative pneumocytes in CMVp-complex and CMVp-IIF showed overexpression. Diffuse interleukin (IL)-8 up-regulation and strong expression were present in both CMV-infected pneumocytes and stromal cells only in CMVp-IIF cases with marked interstitial neutrophilic infiltration. On the basis of viral tropism and the expression of TGF-β1, ITGB6, and IL-8, we conclude that CMV-Infected pulmonary cells play an Important role in the development of diverse CMVp patterns.
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Affiliation(s)
- Yoshifumi Arai
- Department of Pathology, Hamamatsu University School of Medicine, Hamamtsu, Japan.
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Meguro S, Yasuda M. α-Fetoprotein-producing ovarian tumor in a postmenopausal woman with germ cell differentiation. Ann Diagn Pathol 2011; 17:140-4. [PMID: 22056036 DOI: 10.1016/j.anndiagpath.2011.07.010] [Citation(s) in RCA: 9] [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] [Received: 03/02/2011] [Revised: 06/07/2011] [Accepted: 07/14/2011] [Indexed: 10/15/2022]
Abstract
α-Fetoprotein (AFP)-producing ovarian tumors (APOTs) are rarely encountered in postmenopausal women, irrespective of whether they are of the germ cell or non-germ cell type. The APOTs that do occur in postmenopausal women are characterized by variable histologies such as hepatoid carcinoma, yolk sac tumor, and epithelial malignancies, most of which are combined. We herein present a case with APOT, which arose in a 58-year-old, gravida 2, para 2, postmenopausal woman. Preoperatively, the tumor, which was in the right ovary, was found to produce AFP (102768.0 ng/mL). The tumor was evenly composed of glands mimicking secretory endometrial gland or fetal gut accompanied by abundant stroma. Immunohistochemically, these glands were positive for SALL4, glypican-3, and hepatocyte nuclear factor 1β. We considered the present case as an AFP-producing adenocarcinoma with adenofibroma showing germ cell differentiation, but it seemed controversial that this tumor should be designated as a yolk sac tumor of the glandular type. The expression profiles of SALL4, OCT4, glypican-3, and hepatocyte nuclear factor 1β were thought to provide interesting implications to characterize the present case.
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Affiliation(s)
- Shiori Meguro
- Department of Pathology, Saitama Medical University International Medical Center, Japan
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Yasui H, Akamatsu T, Nakamura Y, Inui N, Suda T, Chida K, Meguro S, Baba S. [A case of pulmonary tumor thrombotic microangiopathy induced by early gastric cancer]. Nihon Kokyuki Gakkai Zasshi 2011; 49:122-127. [PMID: 21400909] [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: 05/30/2023]
Abstract
A 56-year-old man with chief complaints of dry cough and dyspnea was admitted. He had severe hypoxemia, and his chest radiographs showed enhancement of pulmonary artery opacities with multiple defects on pulmonary blood flow scintigraphy. Enhanced computed tomography (CT) revealed swelling of the mediastinum and hilar lymph nodes, but no apparent thrombi in the pulmonary arteries was seen. A biopsy specimen of a left neck lymph node showed poorly differentiated adenocarcinoma, including signet-ring cell carcinoma components, but the origin was unclear. Despite receiving chemotherapy, his respiratory condition worsened, and he died 3 days after admission. Routine autopsy failed to clarify the tumor origin, but a detailed dissection of specimens confirmed early gastric cancer. Additionally, pathology of the pulmonary arteries was compatible with pulmonary tumor thrombotic microangiopathy (PTTM). PTTM is a rare condition characterized by the presence of diffuse thrombotic microthrombi and fibrocellular intimal proliferation in the pulmonary vasculature. Accompanied with early gastric cancer, this is an extremely rare but important case of PTTM.
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Affiliation(s)
- Hideki Yasui
- Department of Respiratory Medicine, Hamamatsu University School of Medicine, Hamamatsu University Hospital
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Barman A, Kimura T, Otani Y, Fukuma Y, Akahane K, Meguro S. Benchtop time-resolved magneto-optical Kerr magnetometer. Rev Sci Instrum 2008; 79:123905. [PMID: 19123577 DOI: 10.1063/1.3053353] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present here the construction and application of a compact benchtop time-resolved Kerr magnetometer to measure the magnetization precession in magnetic thin films and lithographically patterned elements. As opposed to very expensive femtosecond lasers this system is built upon a picosecond pulsed injection diode laser and electronic pulse and delay generators. The precession is triggered by the electronic pulses of controlled duration and shape, which is launched onto the sample by a microstrip line. We used polarized optical pulses synchronous to the electronic pulses to measure the magneto-optical Kerr rotation. The system is integrated in a conventional upright microscope configuration with separate illumination, imaging, and magneto-optical probe paths. The system offers high stability, relative ease of alignment, sample changing, and a long range of time delay. We demonstrate the measurements of time-resolved dynamics of a Permalloy microwire and microdot using this system, which showed dynamics at two different time scales.
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Affiliation(s)
- Anjan Barman
- Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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Hibi M, Takase H, Yasunaga K, Yamaguchi T, Shiiba D, Saito S, Yokoyama R, Kudo N, Katsuragi Y, Meguro S, Shimizu A, Tokimitsu I. Greater fat oxidation with diacylglycerol oil consumption for 14 days compared with triacylglycerol oil consumption in overweight men and women. Int J Obes (Lond) 2008; 32:1841-7. [PMID: 18936764 DOI: 10.1038/ijo.2008.197] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [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] [Indexed: 01/01/2023]
Abstract
BACKGROUND Several studies have reported increased fat oxidation with diacylglycerol (DAG) oil consumption. However, the effects of long-term DAG oil consumption on energy metabolism remain to be investigated. OBJECTIVE The objective of this study was to compare the effects of 14 days of either DAG or triacylglycerol (TAG) oil consumption on substrate oxidation, energy expenditure (EE) and dietary fat oxidation. DESIGN Eight males and six females participated in this randomized, double-blind, crossover feeding study. Each patient consumed the 14-day controlled test diet containing either 10 g day(-1) of DAG or TAG oil for acclimatization before a respiratory chamber measurement, followed by a 2-week washout period between diet treatments. Substrate oxidation and EE were measured in the respiratory chamber at the end of each dietary treatment. The patients consumed test oil as 15% of total caloric intake in the respiratory chamber (mean test oil intake was 36.1+/-6.6 g day(-1)). RESULTS Twenty-four hour fat oxidation was significantly greater with 14 days of DAG oil consumption compared with TAG oil consumption (78.6+/-19.6 and 72.6+/-14.9 g day(-1), respectively, P<0.05). There were no differences in body weight or body composition between diet treatments. Dietary fat oxidation was determined using the recovery rate of (13)CO(2) in breath, and was significantly enhanced with DAG oil consumption compared with TAG oil consumption, measured over 22 h after ingestion of (13)C-labelled triolein. Resting metabolic rate (RMR) was significantly greater with DAG oil consumption compared with TAG oil consumption (1766+/-337 and 1680+/-316 kcal day(-1), respectively, P<0.05). CONCLUSION Consumption of DAG oil for 14 days stimulates both fat oxidation and RMR compared with TAG oil consumption, which may explain the greater loss of body weight and body fat with DAG oil consumption that has been observed in weight-loss studies.
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Affiliation(s)
- M Hibi
- Health Care Food Research Laboratories, Kao Corporation, Sumida-ku, Tokyo, Japan.
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Aono K, Fusada A, Fusada Y, Ishii W, Kanaya Y, Komuro M, Matsui K, Meguro S, Miyamae A, Miyamae Y, Murata A, Narita S, Nozaka H, Saito W, Watanabe A, Nishikata K, Kanazawa A, Fujito Y, Okada R, Lukowiak K, Ito E. Speed of back-swimming of Lymnaea. Acta Biol Hung 2008; 59 Suppl:105-9. [PMID: 18652381 DOI: 10.1556/abiol.59.2008.suppl.17] [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: 11/19/2022]
Abstract
The pond snail, Lymnaea stagnalis, can locomote on its back utilizing the surface tension of the water. We have called this form of movement 'back-swimming'. In order to perform this behavior, the snail must flip itself over on its back so that its foot is visible from above. Little is known about the mechanism of this back-swimming. As a first step for the elucidation of this mechanism, we measured the speed of back-swimming of Lymnaea at the different times of the day. They back-swam significantly faster in the morning than just before dark. These data are consistent with our earlier findings on circadian-timed activity pattern in Lymnaea. Lymnaea appear to secrete a thin membrane-like substance from their foot that may allow them to back-swim. To confirm the existence of this substance and to examine whether this substance is hydrophobic or hydrophilic, we applied a detergent onto the foot during back-swimming. A single drop of 1% Tween 20 drifted Lymnaea away that were still kept at the water surface. These results suggest that Lymnaea secrete a hydrophobic substance from their foot that floats to the water surface allowing Lymnaea to back-swim.
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Affiliation(s)
- Kanako Aono
- Biology Club, Hokkaido Sapporo Okadama High School, Higashi-ku, Sapporo 007-0881, Japan
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Awaji S, Watanabe K, Oguro H, Nishijima G, Tsubouchi H, Miyoshi K, Meguro S. Application of prebending effect to high strength Nb3 Sn strands. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2006.07.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Liu H, Namikoshi M, Meguro S, Nagai H, Kobayashi H, Yao X. Isolation and characterization of polybrominated diphenyl ethers as inhibitors of microtubule assembly from the marine sponge Phyllospongia dendyi collected at Palau. J Nat Prod 2004; 67:472-474. [PMID: 15043436 DOI: 10.1021/np0304621] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Two new polybrominated diphenyl ethers (1 and 2) were isolated by bioassay-guided separations together with nine known compounds (3-11) from the marine sponge Phyllospongia dendyi collected from Palau. The structures were assigned on the basis of their spectral data. Compounds 3, 7, and 10 showed inhibitory activities to the assembly of microtubule proteins (IC(50): 29.6, 33.5, and 20.9 microM, respectively) and to the meiotic maturation of starfish oocytes (IC(50): 3.6, 4.2, and 4.2 microM, respectively), while 1, 2, 4-6, 8, 9, and 11 were not active at 100 microM. Two phenolic hydroxyls are required for their bioactivities.
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Affiliation(s)
- Hongwei Liu
- Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan
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37
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Kobayashi H, Meguro S, Yoshimoto T, Namikoshi M. Corrigendum to “Absolute structure, biosynthesis, and anti-microtubule activity of phomopsidin, isolated from a marine-derived fungus Phomopsis sp.” [Tetrahedron 59 (2003) 455–459]. Tetrahedron 2004. [DOI: 10.1016/j.tet.2003.12.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Kobayashi H, Meguro S, Yoshimoto T, Namikoshi M. Absolute structure, biosynthesis, and anti-microtubule activity of phomopsidin, isolated from a marine-derived fungus Phomopsis sp. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(02)01566-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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39
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Abdel Ghany N, Kumagai N, Meguro S, Asami K, Hashimoto K. Oxygen evolution anodes composed of anodically deposited Mn–Mo–Fe oxides for seawater electrolysis. Electrochim Acta 2002. [DOI: 10.1016/s0013-4686(02)00539-x] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.5] [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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40
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Meguro S, Namikoshi M, Kobayashi H. A new screening method for antimitotic substances and isolation of glycolipids as stimulators of tubulin polymerization from Okinawan sponge Pseudoceratina sp. J Antibiot (Tokyo) 2002; 55:256-62. [PMID: 12014440 DOI: 10.7164/antibiotics.55.256] [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: 11/21/2022]
Abstract
A new screening method to detect antimitotic substances utilizing purified porcine brain microtubule proteins was developed. This method observes the inhibitory and stimulatory activities on microtubule polymerization and inhibitory activity on depolymerization in sequence. Two glycolipids, 1-O-beta-D-galactopyranosyl-2,3-di-O-acylglycerol and 1-O-tetrahydroxycyclopentyl-2-O-acyl-3-O-alkylglycerol were isolated from Okinawan marine sponge Pseudoceratina sp. by this screening method. These compounds stimulated the microtubule polymerization at 10 degrees C.
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Affiliation(s)
- Shiori Meguro
- Department of Ocean Sciences, Tokyo University of Fisheries, Japan
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41
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Ochi T, Meguro S, Namikoshi M, Oya-Ohta Y, Kaise T. Dimethylarsinic acid causes inhibition of microtubule assembly and inhibition of calcium-sensitive disassembly of microtubules via interaction with glutathione. Appl Organomet Chem 2002. [DOI: 10.1002/aoc.326] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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42
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Abstract
Acarbose has been shown to reduce postprandial hyperglycemia and to improve lipid parameters in diabetics via its inhibitory effects on intestinal alpha-glucosidases. Response to acarbose may therefore be dependent upon gastric or pancreatic hormone function. To test this hypothesis, we treated 27 mild type 2 (NIDDM) Japanese diabetics who were mildly obese with low-dose acarbose (150 mg/day) for 3 months. We then performed a responder analysis to determine specific hormonal responses that may be associated with a good response to acarbose. At the end of the treatment period, a total of 15 evaluable patients was grouped as responders (n=6) and nonresponders (n=9) based on an effective decrease in postprandial glucose levels (>30 mg/day) and glycosylated hemoglobin (HbA1c) levels (>0.5%). There were no differences between the two groups in demographic variables or mean postprandial glucose levels at baseline. There was a small but significant increase in postprandial cholecystokinin (CCK) in responders, and fasting gastric inhibitory peptide (GIP) levels were significantly increased in responders and all patients after treatment. Serum leptin levels were reduced by treatment in our mildly obese responders and this was associated with a significant decrease in body weight. These results suggest that treatment with low-dose acarbose may reduce hyperglycemia in mild type 2 Japanese patients and may improve metabolic control by regulating hormones involved in glycemic control and digestive absorption. Acarbose may provide a safe adjunct to help treat insulin resistance in type 2 patients.
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Affiliation(s)
- I Takei
- Department of Internal Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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43
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Meguro S, Higashi K, Hase T, Honda Y, Otsuka A, Tokimitsu I, Itakura H. Solubilization of phytosterols in diacylglycerol versus triacylglycerol improves the serum cholesterol-lowering effect. Eur J Clin Nutr 2001; 55:513-7. [PMID: 11464223 DOI: 10.1038/sj.ejcn.1601173] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [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: 05/11/2000] [Revised: 12/18/2000] [Accepted: 12/20/2000] [Indexed: 11/09/2022]
Abstract
OBJECTIVE This study was performed to investigate the difference in the serum-cholesterol- and triglyceride-lowering activities between phytosterols dissolved in diacylglycerol (PS/DG) and dispersed in triacylglycerol (PS/TG). The effects of the solvent on the concentrations of serum beta-sitosterol and campesterol were examined. DESIGN The study had a randomised crossover design. SUBJECTS Twelve healthy normocholesterolemic or moderately hypercholesterolemic men aged 29-50 y participated in this study. INTERVENTIONS For 2 weeks before the test period (designated as the control period), all subjects consumed control mayonnaise (PS free) daily with supper and were randomly assigned to two groups for the 2 week test period; one group was given mayonnaise containing PS (500 mg/day) dissolved in DG (10 g/day), and the other mayonnaise containing PS (500 mg/day) dispersed in TG (10 g/day). After a wash out period consuming control PS-free mayonnaise for 4 weeks, the groups were reversed for 2 weeks. RESULTS PS/TG feeding had no effect on the serum cholesterol level. In contrast, PS/DG feeding significantly reduced the total and LDL cholesterol levels from the initial value of 5.57 to 5.31 mmol/l (4.7%; P<0.05) and from 3.69 to 3.39 mmol/l (7.6%; P<0.05), respectively. Moreover, the degree of total cholesterol reduction induced by PS/DG feeding in the test period was significantly greater than that induced by PS/TG feeding (P<0.05). In addition, the serum beta-sitosterol and campesterol concentrations did not change during the PS/TG or PS/DG feeding periods. CONCLUSIONS Dissolution of PS in DG had a better serum cholesterol lowering effect than dissolution in TG. SPONSORSHIP Kao Corporation.
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Affiliation(s)
- S Meguro
- Biological Science Laboratory, Kao Corporation, Tochigi, Japan
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44
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Shimotoyodome A, Meguro S, Hase T, Tokimitsu I, Sakata T. Sulfated polysaccharides, but not cellulose, increase colonic mucus in rats with loperamide-induced constipation. Dig Dis Sci 2001; 46:1482-9. [PMID: 11478500 DOI: 10.1023/a:1010644021888] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Colonic mucus is decreased in a rat model of spastic constipation, and some types of water-insoluble dietary fiber increase colonic mucus when consumed by rats for several weeks. However, little is known about the effect of water-soluble dietary fiber on the colonic mucus. The aim of the present study was to investigate the effect of various types of water-soluble dietary fiber on colonic mucus in a rat model of spastic constipation. Oral administration of 1.5 mg/day of carrageenan and chondroitin sulfate increased the fecal excretion, epithelial mucin production, thickness of the mucous layer, and amount of luminal mucus in loperamide-administered rats. Sodium alginate, 5 mg/day, thickened the mucus layer at the fecal surface. Cellulose, 5 mg/day, increased the fecal excretion but not the colonic mucus. Carrageenan, chondroitin sulfate, and sodium alginate, but not cellulose, increased colonic mucus in the rat model of spastic constipation.
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Affiliation(s)
- A Shimotoyodome
- Biological Science Laboratories, Kao Corporation, Haga-gun, Tochigi, Japan
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45
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Meguro S, Takei I, Murata M, Hirose H, Takei N, Mitsuyoshi Y, Ishii K, Oguchi S, Shinohara J, Takeshita E, Watanabe K, Saruta T. Cholesteryl ester transfer protein polymorphism associated with macroangiopathy in Japanese patients with type 2 diabetes. Atherosclerosis 2001; 156:151-6. [PMID: 11369008 DOI: 10.1016/s0021-9150(00)00606-7] [Citation(s) in RCA: 28] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A polymorphism in the gene for cholesteryl ester transfer protein (CETP) has been reported to be associated with serum cholesterol levels and risk for atherosclerotic vascular diseases, and to clarify the relationship between the gene polymorphism for CETP and macroangiopathy in diabetes mellitus, a cross-sectional study was performed. The subjects of the study were182 Japanese (age: 59.6+/-8.6 years) with type 2 diabetes and no signs of renal dysfunction, 24 of whom had macroangiopathy, and 158 of whom did not. The genotype of the subjects for the TaqIB polymorphism of CETP in intron one was analyzed by using polymerase chain reaction - restriction fragment length polymorphism. Serum CETP levels were significantly higher in the B1/B1 genotype than in the other genotypes (P<0.05). The serum CETP levels were correlated with the serum LDL cholesterol levels (P<0.01), but not with the HDL cholesterol levels. Macroangiopathy was more frequently observed in subjects with the B1/B1 genotype than in the other genotypes (odds ratio=2.953, 95% confidence interval=1.250-6.977, P=0.0136). Logistic regression analysis revealed that the CETP genotype was independently associated with macroangiopathy. The exact mechanism underlying the association remains unknown, but differences in serum CETP levels may be involved.
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Affiliation(s)
- S Meguro
- Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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46
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Namikoshi M, Akano K, Meguro S, Kasuga I, Mine Y, Takahashi T, Kobayashi H. A new macrocyclic trichothecene, 12,13-deoxyroridin E, produced by the marine-derived fungus Myrothecium roridum collected in Palau. J Nat Prod 2001; 64:396-398. [PMID: 11277768 DOI: 10.1021/np000443g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new macrocyclic trichothecene, 12,13-deoxyroridin E (1), and three known compounds, roridin E (2), verrucarin A (3), and verrucarin J (4), were obtained as cytotoxic components from the marine-derived fungus Myrothecium roridum, isolated in Palau. 12,13-Deoxyroridin E is the second example of a macrocyclic trichothecene possessing a double bond at C-12-C-13 and was about 80-fold less cytotoxic than roridin E, the epoxide variant.
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Affiliation(s)
- M Namikoshi
- Department of Ocean Sciences and Training Vessel Umitaka-maru, Tokyo University of Fisheries, Minato-ku, Tokyo 108-8477, Japan.
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Namikoshi M, Kobayashi H, Yoshimoto T, Meguro S, Akano K. Isolation and characterization of bioactive metabolites from marine-derived filamentous fungi collected from tropical and sub-tropical coral reefs. Chem Pharm Bull (Tokyo) 2000; 48:1452-7. [PMID: 11045449 DOI: 10.1248/cpb.48.1452] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [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: 11/22/2022]
Abstract
Two new compounds, paecilospirone (1) and phomopsidin (2), and seven known compounds, chaetoglobosin A (3), griseofulvin (4), fusarielin A (5), fusapyrone (6), deoxyfusapyrone (7), and verrucarins J (8) and L acetate (9), have been isolated and characterized from marine-derived fungi collected in tropical and sub-tropical coral reef environments. The utility of marine-derived fungi as a source of bioactive secondary metabolites is discussed.
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Affiliation(s)
- M Namikoshi
- Department of Ocean Sciences, Tokyo University of Fisheries, Japan.
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48
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Shimotoyodome A, Meguro S, Hase T, Tokimitsu I, Fujimura A, Nozaka Y. Improvement of macromolecular clearance via lymph flow in hamster gingiva by topical warming and massage. J Periodontal Res 2000; 35:310-7. [PMID: 11005159 DOI: 10.1034/j.1600-0765.2000.035005310.x] [Citation(s) in RCA: 6] [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: 11/23/2022]
Abstract
The lymphatic system is very important for macromolecular clearance in various tissues, especially in the gingiva. However, the kinetics of macromolecular clearance via the lymph flow in the gingiva are poorly understood. The aim of this study was to investigate whether thermal or mechanical stimulation affects macromolecular clearance via the lymph flow in the gingiva. Carbon black suspension was injected into the mandibular gingiva of anesthetized hamsters and its drainage into cervical lymph nodes was examined. Clearance of 14C-methylated bovine albumin and tritiated water from the gingiva and their drainage into submandibular lymph nodes and blood was quantified. The effect of topical warming or massage on clearance of 14C-methylated albumin from the gingiva during a 15 min period was examined. In addition, the influence of neurochemical antagonists on the stimulatory effect of topical warming on albumin clearance was investigated. Submandibular lymph nodes were clearly delineated by carbon black 10 min after the injection. More radiolabeled albumin appeared in submandibular lymph nodes than in serum, while more tritiated water appeared in serum. Topical warming (45 degrees C, 2 min) and warming plus massage (with a silicon rubber brush, 20 s) decreased the radiolabeled albumin in the gingiva 15 min after the injection. There was less radiolabeled albumin in the gingiva after gingival warming plus massage than after warming. Previous injection of HOE140 or propranolol into the gingiva diminished the stimulatory effect of topical warming on albumin clearance. It was concluded that topical warming plus massage improves macromolecular clearance via the lymph flow in hamster gingiva.
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Affiliation(s)
- A Shimotoyodome
- Biological Science Laboratories, Kao Corporation, Tochigi, Japan
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49
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Abstract
The stratum corneum, which is the outermost layer of the skin, functions as an important barrier to maintain biological homeostasis. The multilamellar structures formed by intercellular lipids present in the stratum corneum are considered to play an important role in barrier function. Most intercellular lipids are unbound and can be extracted by organic solvents, but some intercellular lipids are covalently bound to cornified envelope proteins. Decreases in unbound lipid levels reduce the barrier function of the stratum corneum, but the relationship between bound lipid and the barrier function of the stratum corneum is not well understood. In this study, we examined the relationship between the amount of covalently bound ceramide, the main bound lipid, and the barrier function of the stratum corneum. A single dose of UVB irradiation (2 x MED), or continuous UVB irradiation (0.5 x MED/day for 14 days) to the back, or feeding with an essential fatty acid-deficient (EFAD) diet for 8 weeks caused a significant elevation of TEWL and a significant reduction in covalently bound ceramides in hairless rats. Transmission electron microscopy revealed that the intercellular multilamellar structures in the stratum corneum of treated rats were incomplete (folding, defects, unclear images) compared to the structures seen in the stratum corneum of non-UVB-irradiated and non-EFAD rats. These results suggest that the amount of covalently bound ceramides is highly correlated with the barrier function of the skin, and that covalently bound ceramides play an important role in the formation of lamellar structures, and are involved in the maintenance of the barrier function of the skin.
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Affiliation(s)
- S Meguro
- Biological Science Laboratory, Kao Corporation, 2606 Akabane, 321-3497, Ichikai-machi, Haga-gun, Tochigi, Japan
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50
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Shimotoyodome A, Meguro S, Hase T, Tokimitsu I, Sakata T. Decreased colonic mucus in rats with loperamide-induced constipation. Comp Biochem Physiol A Mol Integr Physiol 2000; 126:203-12. [PMID: 10936760 DOI: 10.1016/s1095-6433(00)00194-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [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: 10/18/2022]
Abstract
Constipation is a risk factor of colorectal cancer. Mucin is a major component of lumenal mucus, which protects the colorectal mucosa against mechanical and chemical damage. The aim of this study was to evaluate mucus production and to quantitate lumen mucus in a rat model of spastic constipation. We induced constipation with loperamide (1.5 mg/kg), and histochemically evaluated mucus production and the thickness of the mucus layer at the fecal surface. We quantitated the mucus attached to the mucosal surface using colonic perfusion with N-acetylcysteine. While more feces remained in the colon, there was less fecal excretion and lower fecal water content in loperamide-administered rats than in control rats. Crypt epithelial cells contained less mucus in constipated rats than in control rats. The mucus layer at the fecal surface was thinner and less mucus was recovered from the mucosal surface in constipated rats than in control rats. Mucus production of crypt epithelial cells and mucus at the fecal and mucosal surface were reduced by loperamide-induced constipation.
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Affiliation(s)
- A Shimotoyodome
- Biological Science Laboratories, Kao Corporation, 2606 Akabane, 321-3497 Ichikai-machi, Haga-gun, Tochigi, Japan
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