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Nakamata J, Morimoto H, Baba R, Kokubu K, Miyamoto T. Glucose Induces ER Stress Response-Mediated Peritoneal Mesothelial Cell Death. Acta Histochem Cytochem 2024; 57:7-14. [PMID: 38463207 PMCID: PMC10918429 DOI: 10.1267/ahc.23-00050] [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: 07/24/2023] [Accepted: 12/27/2023] [Indexed: 03/12/2024] Open
Abstract
Peritoneal dialysis (PD) fluid, which contains a high concentration of glucose, is involved in peritoneal damage after long-term use. The mechanisms through which glucose induces damage to the mesothelium have not been clearly elucidated. Although, endoplasmic reticulum (ER) stress response is associated with several diseases, the involvement of ER stress in peritoneal damage has not yet been demonstrated. Primary-cultured rat peritoneal mesothelial cells (RPMCs) and rat PD model were used to investigate the influence of glucose on the peritoneum. Cells treated with glucose were examined for cytotoxicity, induction of apoptosis, and activation of the ER stress pathway. Glucose treatment of RPMCs induced cell death at concentrations higher than 3%. Annexin V positive, that is a feature of apoptosis, occurred in dead cells. Treatment with glucose led to the activation of protein kinase R-like ER kinase (PERK) and eukaryotic translation initiation factor-2α (eIF-2α). Glucose also induced the expression and nuclear translocation of homologous protein C/EBP. Cell death was rescued by the integrated stress response inhibitor, ISRIB, which suppresses the integrated stress response pathway, including ER stress. Glucose in PD fluid induces PERK/eIF-2α-mediated ER stress in RPMCs, resulting in apoptosis. This cellular stress may cause peritoneal damage in patients receiving PD.
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Affiliation(s)
- Junichi Nakamata
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-8555, Japan
- Present affiliation: Ashiya Central Hospital, 283-7, Yamaga, Ashiya, Onga, Fukuoka 807-0141, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-8555, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-8555, Japan
| | - Keiji Kokubu
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-8555, Japan
| | - Tetsu Miyamoto
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-8555, Japan
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2
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Sumida K, Doi T, Obayashi K, Chiba Y, Nagasaka S, Ogino N, Miyagawa K, Baba R, Morimoto H, Hara H, Terabayashi T, Ishizaki T, Harada M, Endo M. Caspase-4 has a role in cell division in epithelial cells through actin depolymerization. Biochem Biophys Res Commun 2024; 695:149394. [PMID: 38157629 DOI: 10.1016/j.bbrc.2023.149394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
In addition to its role in pyroptosis and inflammatory cytokine maturation, caspase-4 (CASP4) also contributes to the fusion of phagosomes with lysosomes and cell migration. However, its role in cell division remains elusive. In this study, we demonstrate that CASP4 is indispensable for proper cell division in epithelial cells. Knockout of CASP4 (CASP4 KO) in HepG2 cells led to delayed cell proliferation, increased cell size, and increased multinucleation. In mitosis, CASP4 KO cells showed multipolar spindles, asymmetric spindle positioning, and chromosome segregation errors, ultimately increasing DNA content and chromosome number. We also found that phalloidin, a marker of filamentous actin, increased in CASP4 KO cells owing to suppressed actin depolymerization. Moreover, the levels of actin polymerization-related proteins, including Rho-associated protein kinase1 (ROCK1), LIM kinase1 (LIMK1), and phosphorylated cofilin, significantly increased in CASP4 KO cells. These results suggest that CASP4 contributes to proper cell division through actin depolymerization.
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Affiliation(s)
- Kazuhiro Sumida
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan; Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Tomomitsu Doi
- Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kunie Obayashi
- Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yosuke Chiba
- Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Shohei Nagasaka
- Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Noriyoshi Ogino
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Koichiro Miyagawa
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hideki Hara
- Department of Infectious Diseases, Division of Microbiology and Immunochemistry, Asahikawa Medical University, Asahikawa, Japan
| | - Takeshi Terabayashi
- Department of Pharmacology, Faculty of Medicine, Oita University, Yufu, Japan
| | - Toshimasa Ishizaki
- Department of Pharmacology, Faculty of Medicine, Oita University, Yufu, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Motoyoshi Endo
- Department of Molecular Biology, University of Occupational and Environmental Health, Kitakyushu, Japan.
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Nishimura H, Yoshimura M, Shimizu M, Sanada K, Sonoda S, Nishimura K, Baba K, Ikeda N, Motojima Y, Maruyama T, Nonaka Y, Baba R, Onaka T, Horishita T, Morimoto H, Yoshida Y, Kawasaki M, Sakai A, Muratani M, Conway-Campbell B, Lightman S, Ueta Y. Endogenous oxytocin exerts anti-nociceptive and anti-inflammatory effects in rats. Commun Biol 2022; 5:907. [PMID: 36064593 PMCID: PMC9445084 DOI: 10.1038/s42003-022-03879-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 02/21/2022] [Accepted: 08/23/2022] [Indexed: 12/26/2022] Open
Abstract
Oxytocin is involved in pain transmission, although the detailed mechanism is not fully understood. Here, we generate a transgenic rat line that expresses human muscarinic acetylcholine receptors (hM3Dq) and mCherry in oxytocin neurons. We report that clozapine-N-oxide (CNO) treatment of our oxytocin-hM3Dq-mCherry rats exclusively activates oxytocin neurons within the supraoptic and paraventricular nuclei, leading to activation of neurons in the locus coeruleus (LC) and dorsal raphe nucleus (DR), and differential gene expression in GABA-ergic neurons in the L5 spinal dorsal horn. Hyperalgesia, which is robustly exacerbated in experimental pain models, is significantly attenuated after CNO injection. The analgesic effects of CNO are ablated by co-treatment with oxytocin receptor antagonist. Endogenous oxytocin also exerts anti-inflammatory effects via activation of the hypothalamus-pituitary-adrenal axis. Moreover, inhibition of mast cell degranulation is found to be involved in the response. Taken together, our results suggest that oxytocin may exert anti-nociceptive and anti-inflammatory effects via both neuronal and humoral pathways.
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Affiliation(s)
- Haruki Nishimura
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.,Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Mitsuhiro Yoshimura
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan. .,Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
| | - Makiko Shimizu
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kenya Sanada
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Satomi Sonoda
- The First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kazuaki Nishimura
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kazuhiko Baba
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.,Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Naofumi Ikeda
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.,Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yasuhito Motojima
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Takashi Maruyama
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuki Nonaka
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Tatsushi Onaka
- Division of Brain and Neurophysiology, Department of Physiology, Jichi Medical University, Shimotsuke, Japan
| | - Takafumi Horishita
- Department of Anesthesiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Makoto Kawasaki
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Akinori Sakai
- Department of Orthopaedic Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Masafumi Muratani
- Genome Biology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Becky Conway-Campbell
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Stafford Lightman
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Yoichi Ueta
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
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Shen M, Wang D, Sennari Y, Zeng Z, Baba R, Morimoto H, Kitamura N, Nakanishi T, Tsukada J, Ueno M, Todoroki Y, Iwata S, Yonezawa T, Tanaka Y, Osada Y, Yoshida Y. Pentacyclic triterpenoid ursolic acid induces apoptosis with mitochondrial dysfunction in adult T-cell leukemia MT-4 cells to promote surrounding cell growth. Med Oncol 2022; 39:118. [PMID: 35674939 DOI: 10.1007/s12032-022-01707-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/14/2022] [Indexed: 10/18/2022]
Abstract
We investigated the antitumor effects of oleanolic acid (OA) and ursolic acid (UA) on adult T-cell leukemia cells. OA and UA dose-dependently inhibited the proliferation of adult T-cell leukemia cells. UA-treated cells showed caspase 3/7 and caspase 9 activation. PARP cleavage was detected in UA-treated MT-4 cells. Activation of mTOR and PDK-1 was inhibited by UA. Autophagosomes were detected in MT-4 cells after UA treatment using electron microscopy. Consistently, mitophagy was observed in OA- and UA-treated MT-4 cells by confocal microscopy. The mitochondrial membrane potential in MT-4 cells considerably decreased, and mitochondrial respiration and aerobic glycolysis were significantly reduced following UA treatment. Furthermore, MT-1 and MT-4 cells were sorted into two regions based on their mitochondrial membrane potential. UA-treated MT-4 cells from both regions showed high activation of caspase 3/7, which were inhibited by Z-vad. Interestingly, MT-4 cells cocultured with sorted UA-treated cells showed enhanced proliferation. Finally, UA induced cell death and ex vivo PARP cleavage in peripheral blood mononuclear cells from patients with adult T-cell leukemia. Therefore, UA-treated MT-4 cells show caspase activation following mitochondrial dysfunction and may produce survival signals to the surrounding cells.
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Affiliation(s)
- Mengyue Shen
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Duo Wang
- Department of Radiobiology and Hygiene Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yusuke Sennari
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Zirui Zeng
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Ryoko Baba
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Noriaki Kitamura
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Tsukasa Nakanishi
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Junichi Tsukada
- Department of Hematology, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Masanobu Ueno
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yasuyuki Todoroki
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Shigeru Iwata
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Tomo Yonezawa
- Division of Functional Genomics and Therapeutic Innovation, Research Center for Advanced Genomics, Graduate School of Biomedical Sciences,, Nagasaki University, 1-12-14 Sakamoto, Nagasaki, 852-8523, Japan
| | - Yoshiya Tanaka
- The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yoshio Osada
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.
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Nguyen TN, Suzuki H, Baba R, Yoshida Y, Ohkubo JI, Wakasugi T, Kitamura T. Expression of T-Type Voltage-Gated Calcium Channel in the Cilia of Human Nasal Epithelial Cells. Int Arch Allergy Immunol 2022; 183:579-590. [PMID: 35100604 DOI: 10.1159/000521765] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 12/29/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The mucociliary transport function of the airway epithelium is largely dependent on ciliary beating. The control signal of ciliary beating is thought to be intracellular Ca2+. We herein investigated the expression of T-type voltage-gated calcium channel (VGCC), a generator of intracellular Ca2+ oscillation, in the human nasal mucosa. METHODS The inferior turbinate was collected from patients with chronic hypertrophic rhinitis. The expression of T-type VGCC α1 subunits was examined by immunohistochemistry, transmission immunoelectron microscopy, Western blot, and real-time reverse transcription-polymerase chain reaction (RT-PCR). Participation of T-type VGCC in the ciliary beat regulation was examined by pharmacological inhibition tests using specific blockers of T-type VGCC in ex vivo measurements of the ciliary beat frequency (CBF) and ATP release and in intracellular Ca2+ imaging of isolated ciliated cells. RESULTS Immunohistochemical staining showed the expressions of T-type VGCC α1 subunits, Cav3.1 and Cav3.3, on the surface of the epithelial cells. At the ultrastructural level, immunoreactivity for Cav3.1 was localized on the surface of the cilia, and that for Cav3.3 was localized in the cilia and at the base of the cilia. The existence of Cav3.1 and Cav3.3 was confirmed at the protein level by Western blot and at the transcriptional level by real-time RT-PCR. Specific blockers of T-type VGCC, mibefradil and NNC 55-0396, significantly inhibited CBF. These blockers also inhibited a CBF increase induced by 8-bromo-cAMP/8-bromo-cGMP and significantly lowered the intracellular Ca2+ level of isolated ciliated cells in a time-dependent manner. On the other hand, the ATP release from the nasal mucosa was not changed by mibefradil or NNC 55-0396. CONCLUSION These results indicate that T-type VGCC α1 subunits, Cav3.1 and Cav3.3, exist at the cilia of the nasal epithelial cells and participate in the regulation of ciliary beating and that these channels act downstream of cAMP/cGMP.
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Affiliation(s)
- Thi Nga Nguyen
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.,Faculty of Public Health, Vinh Medical University, Vinh, Vietnam
| | - Hideaki Suzuki
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Jun-Ichi Ohkubo
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Tetsuro Wakasugi
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Takuro Kitamura
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Honma Y, Sato-Morita M, Katsuki Y, Mihara H, Baba R, Hino K, Kawashima A, Ariyasu T, Harada M. Trehalose alleviates oxidative stress-mediated liver injury and Mallor-Denk body formation via activating autophagy in mice. Med Mol Morphol 2020; 54:41-51. [PMID: 32588144 DOI: 10.1007/s00795-020-00258-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 04/03/2020] [Accepted: 06/16/2020] [Indexed: 02/06/2023]
Abstract
Autophagy is a degradation pathway for long-lived cytoplasmic proteins or damaged organelles and also for many aggregate-prone and disease-causing proteins. Endoplasmic reticulum (ER) stress and oxidative stress are associated with the pathophysiology of various liver diseases. These stresses induce the accumulation of abnormal proteins, Mallory-Denk body (MDB) formation and apoptosis in hepatocytes. A disaccharide trehalose had been reported to induce autophagy and decrease aggregate-prone proteins and cytotoxicity in neurodegenerative disease models. But the effects of trehalose in hepatocytes have not been fully understood. We examined the effect of trehalose on autophagy, ER stress and oxidative stress-mediated cytotoxicity and MDB formation in hepatocytes using mice model with 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) treatment for 3 months. We administered trehalose by intraperitoneal injection of water containing 10% trehalose (0.02 mg/g body weight) every other day for 3 months. Our results demonstrated that trehalose induced autophagy and reduced ER stress, oxidative stress, MDB formation and apoptosis in hepatocytes of DDC-fed mice by Western blotting and immunostaining analyses. Electron microscopy revealed that trehalose induced autolysosome formation, which located is close to the MDBs. Thus, our findings suggest that trehalose can become a therapeutic agent for oxidative stress-related liver diseases via activating autophagy.
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Affiliation(s)
- Yuichi Honma
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan.
| | - Miyuki Sato-Morita
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Yuka Katsuki
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Hitomi Mihara
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Katsuhiko Hino
- Core Technology Division, R&D Center, Hayashibara Co., Ltd., Okayama, Japan
| | - Akira Kawashima
- Applied Technology Division, R&D Center, Hayashibara Co., Ltd., Okayama, Japan
| | - Toshio Ariyasu
- Applied Technology Division, R&D Center, Hayashibara Co., Ltd., Okayama, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555, Japan
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Baba R, Yamato R, Higuchi K, Matsuda T, Kumazawa K. Characterization of the Unique Aroma of Arabica Coffee and Its Formation. J JPN SOC FOOD SCI 2020. [DOI: 10.3136/nskkk.67.134] [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: 11/03/2022]
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Morita K, Wang D, Baba R, Morimoto H, Song Y, Kanazawa T, Yoshida Y. Particulate Matter, Asian Sand Dust Delays Cyclophosphamide-induced Type 1 Diabetes in NOD Mice. Immunol Invest 2019; 49:698-710. [DOI: 10.1080/08820139.2019.1699569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kentaro Morita
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Duo Wang
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy (II), School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuan Song
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
- Department of Clinical Laboratory, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Tamotsu Kanazawa
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yasuhiro Yoshida
- Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Do BH, Nguyen TN, Baba R, Ohbuchi T, Ohkubo JI, Kitamura T, Wakasugi T, Morimoto H, Suzuki H. Calmodulin and protein kinases A/G mediate ciliary beat response in the human nasal epithelium. Int Forum Allergy Rhinol 2019; 9:1352-1359. [PMID: 31574592 DOI: 10.1002/alr.22442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 03/12/2019] [Revised: 09/01/2019] [Accepted: 09/06/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Mucociliary clearance of the airway epithelium is an essential function for mucosal defense. We recently proposed a hypothetical mechanism of ciliary beat regulation, in which the pannexin-1 (Panx1)-P2X7 unit serves as an oscillator generating a periodic increase in intracellular Ca2+ ([Ca2+ ]i ). In the present study, we examined the localization of Panx1 and P2X7 at the ultrastructural level, and investigated the regulatory pathway subsequent to [Ca2+ ]i increase. METHODS The inferior turbinate mucosa was collected from patients with chronic hypertrophic rhinitis during endoscopic sinonasal surgery. The mucosa was examined by transmission immunoelectron microscopy for Panx1 and P2X7. Alternatively, the mucosa was cut into thin strips, and ciliary beat frequency (CBF) was measured under a phase-contrast light microscope with a high-speed digital video camera. RESULTS In immunoelectron microscopy, immunoreactivities for Panx1 and P2X7 were localized along the plasma membrane of the entire length of the cilia. CBF was significantly increased by stimulation with 100 µM acetylcholine (Ach). The Ach-induced CBF increase was significantly inhibited by calmidazolium (calmodulin antagonist), SQ22536 (adenylate cyclase inhibitor), ODQ (guanylate cyclase inhibitor), KT5720 (protein kinase A inhibitor), and KT5823 (protein kinase G inhibitor). Fluorodinitrobenzene (creatine kinase inhibitor) completely inhibited the ciliary beat in a time- and dose-dependent manner. CONCLUSION These results indicate that Panx1 and P2X7 coexist at the cilia of the human nasal epithelial cells and that the ciliary beat is regulated by calmodulin, adenylate/guanylate cyclases and protein kinases A/G, and crucially depends on creatine kinase.
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Affiliation(s)
- Ba Hung Do
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.,Department of Otorhinolaryngology, Hanoi Medical University, Hanoi, Vietnam
| | - Thi Nga Nguyen
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Toyoaki Ohbuchi
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Jun-Ichi Ohkubo
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Takuro Kitamura
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Tetsuro Wakasugi
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hideaki Suzuki
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Thorlacius L, Garg A, Ingram J, Villumsen B, Theut Rii P, Gottlieb A, Merola J, Dellavalle R, Ardon C, Baba R, Bechara F, Cohen A, Daham N, Davis M, Emtestam L, Fernández-Peñas P, Filippelli M, Gibbons A, Grant T, Guilbault S, Gulliver S, Harris C, Harvent C, Houston K, Kirby J, Matusiak L, Mehdizadeh A, Mojica T, Okun M, Orgill D, Pallack L, Parks-Miller A, Prens E, Randell S, Rogers C, Rosen C, Choon S, van der Zee H, Christensen R, Jemec G. 化脓性汗腺炎研究的核心结果的全球共识:历史性共识会议I和II的更新. Br J Dermatol 2018. [DOI: 10.1111/bjd.16462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Thorlacius L, Garg A, Ingram J, Villumsen B, Theut Rii P, Gottlieb A, Merola J, Dellavalle R, Ardon C, Baba R, Bechara F, Cohen A, Daham N, Davis M, Emtestam L, Fernández-Peñas P, Filippelli M, Gibbons A, Grant T, Guilbault S, Gulliver S, Harris C, Harvent C, Houston K, Kirby J, Matusiak L, Mehdizadeh A, Mojica T, Okun M, Orgill D, Pallack L, Parks-Miller A, Prens E, Randell S, Rogers C, Rosen C, Choon S, van der Zee H, Christensen R, Jemec G. Towards global consensus on core outcomes for hidradenitis suppurativa research: an update from the HISTORIC consensus meetings I and II. Br J Dermatol 2018. [DOI: 10.1111/bjd.16396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Thorlacius L, Garg A, Ingram JR, Villumsen B, Theut Riis P, Gottlieb AB, Merola JF, Dellavalle R, Ardon C, Baba R, Bechara FG, Cohen AD, Daham N, Davis M, Emtestam L, Fernández-Peñas P, Filippelli M, Gibbons A, Grant T, Guilbault S, Gulliver S, Harris C, Harvent C, Houston K, Kirby JS, Matusiak L, Mehdizadeh A, Mojica T, Okun M, Orgill D, Pallack L, Parks-Miller A, Prens EP, Randell S, Rogers C, Rosen CF, Choon SE, van der Zee HH, Christensen R, Jemec GBE. Towards global consensus on core outcomes for hidradenitis suppurativa research: an update from the HISTORIC consensus meetings I and II. Br J Dermatol 2018; 178:715-721. [PMID: 29080368 DOI: 10.1111/bjd.16093] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2017] [Indexed: 01/12/2023]
Abstract
BACKGROUND A core outcomes set (COS) is an agreed minimum set of outcomes that should be measured and reported in all clinical trials for a specific condition. Hidradenitis suppurativa (HS) has no agreed-upon COS. A central aspect in the COS development process is to identify a set of candidate outcome domains from a long list of items. Our long list had been developed from patient interviews, a systematic review of the literature and a healthcare professional survey, and initial votes had been cast in two e-Delphi surveys. In this manuscript, we describe two in-person consensus meetings of Delphi participants designed to ensure an inclusive approach to generation of domains from related items. OBJECTIVES To consider which items from a long list of candidate items to exclude and which to cluster into outcome domains. METHODS The study used an international and multistakeholder approach, involving patients, dermatologists, surgeons, the pharmaceutical industry and medical regulators. The study format was a combination of formal presentations, small group work based on nominal group theory and a subsequent online confirmation survey. RESULTS Forty-one individuals from 13 countries and four continents participated. Nine items were excluded and there was consensus to propose seven domains: disease course, physical signs, HS-specific quality of life, satisfaction, symptoms, pain and global assessments. CONCLUSIONS The HISTORIC consensus meetings I and II will be followed by further e-Delphi rounds to finalize the core domain set, building on the work of the in-person consensus meetings.
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Affiliation(s)
- L Thorlacius
- Department of Dermatology, Zealand University Hospital, Roskilde, Health Sciences Faculty, University of Copenhagen, Denmark.,Musculoskeletal Statistics Unit, The Parker Institute, Bispebjerg and Frederiksberg Hospital, the Capital Region of Denmark, Copenhagen, Denmark
| | - A Garg
- Department of Dermatology, Hofstra Northwell School of Medicine, New Hyde Park, NY, U.S.A
| | - J R Ingram
- Institute of Infection and Immunity, University Hospital of Wales, Heath Park, Cardiff, U.K
| | - B Villumsen
- Patient Representative, The Patients' Association HS Denmark, Denmark
| | - P Theut Riis
- Department of Dermatology, Zealand University Hospital, Roskilde, Health Sciences Faculty, University of Copenhagen, Denmark
| | - A B Gottlieb
- Department of Dermatology, New York Medical College, Valhalla, NY, U.S.A
| | - J F Merola
- Harvard Medical School, Boston, MA, U.S.A.,Department of Dermatology and Department of Medicine, Division of Rheumatology
| | - R Dellavalle
- Dermatology Service, U.S. Department of Veteran Affairs Medical Centre, Denver, CO, U.S.A
| | - C Ardon
- Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, the Netherlands
| | - R Baba
- Former National Advisor to the Ministry of Health, Malaysia
| | - F G Bechara
- Department of Dermatologic Surgery, St Josef Hospital, Ruhr-University, Bochum, Germany
| | - A D Cohen
- Siaal Research Center for Family Medicine and Primary Care, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Chief Physician's Office, Department of Quality Measurements and Research, Clalit Health Services, Tel-Aviv, Israel
| | - N Daham
- Department of Dermatology, Tufts Medical Center, Boston, MA, U.S.A
| | - M Davis
- Department of Dermatology, Mayo Clinic, Rochester, MN, 5590, U.S.A
| | - L Emtestam
- Department of Dermatology, Karolinska University Hospital, Stockholm, Sweden
| | - P Fernández-Peñas
- Department of Dermatology, Westmead Hospital, Sydney Medical School, The University of Sydney, Sydney, Australia
| | | | - A Gibbons
- Patient Representatives, The Hidradenitis Suppurativa Trust, Rochester, U.K
| | - T Grant
- Patient Representative, Tucson, AZ, U.S.A
| | - S Guilbault
- Patient Representative, Hope for HS, Detroit, MI, U.S.A
| | - S Gulliver
- Department of Research, Newlab Clinical Research, NL, Canada
| | - C Harris
- Patient Representative, Cardiff, U.K
| | - C Harvent
- Patient Representative, Patients' Association: La Maladie de Verneuil en Belgique, Erbisoeul, Belgium
| | - K Houston
- Patient Representatives, The Hidradenitis Suppurativa Trust, Rochester, U.K
| | - J S Kirby
- Department of Dermatology, Penn State Hershey Medical Center, Hershey, PA, U.S.A
| | - L Matusiak
- Department of Dermatology, Venereology and Allergology, Wrocław Medical University, Wrocław, Poland
| | - A Mehdizadeh
- Dalla Lana School of Public Health, University of Toronto, ON, Canada
| | - T Mojica
- Patient Representative, Brick, NJ, U.S.A
| | - M Okun
- Fort HealthCare, Fort Atkinson, WI, U.S.A
| | - D Orgill
- Division of Plastic Surgery, Brigham and Women's Hospital, Boston, MA, U.S.A
| | - L Pallack
- Patient Representative, Longmont, CO, U.S.A
| | - A Parks-Miller
- Hope for HS, Detroit, MI, U.S.A.,Hidradenitis Suppurativa Foundation, Inc., Santa Monica, CA, U.S.A.,Department of Dermatology, Henry Ford Hospital, Detroit, MI, U.S.A
| | - E P Prens
- Dermatology Service, U.S. Department of Veteran Affairs Medical Centre, Denver, CO, U.S.A
| | - S Randell
- Patient Representative, Hope for HS, Detroit, MI, U.S.A
| | - C Rogers
- Patient Representative, HS Aware, Toronto, ON, Canada
| | - C F Rosen
- Division of Dermatology, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | - S E Choon
- Department of Dermatology, Hospital Sultanah Aminah, Johor Bahru, Malaysia
| | - H H van der Zee
- Dermatology Service, U.S. Department of Veteran Affairs Medical Centre, Denver, CO, U.S.A.,Department of Dermatology, Havenziekenhuis, Rotterdam, the Netherlands
| | - R Christensen
- Musculoskeletal Statistics Unit, The Parker Institute, Bispebjerg and Frederiksberg Hospital, the Capital Region of Denmark, Copenhagen, Denmark
| | - G B E Jemec
- Department of Dermatology, Zealand University Hospital, Roskilde, Health Sciences Faculty, University of Copenhagen, Denmark
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Honma Y, Sato-Morita M, Katsuki Y, Mihara H, Baba R, Harada M. Trehalose activates autophagy and decreases proteasome inhibitor-induced endoplasmic reticulum stress and oxidative stress-mediated cytotoxicity in hepatocytes. Hepatol Res 2018; 48:94-105. [PMID: 28295916 DOI: 10.1111/hepr.12892] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/23/2017] [Accepted: 03/08/2017] [Indexed: 02/08/2023]
Abstract
AIM Endoplasmic reticulum stress is associated with the pathophysiology of various liver diseases. Endoplasmic reticulum stress mediates the accumulation of abnormal proteins and leads to oxidative stress, cytoplasmic inclusion body formation, and apoptosis in hepatocytes. Autophagy is a bulk degradation pathway for long-lived cytoplasmic proteins or damaged organelles and is also a major degradation pathway for many aggregate-prone and disease-causing proteins. We previously reported that rapamycin, a mammalian target of rapamycin inhibitor, activated autophagy and decreased proteasome inhibitor-mediated ubiquitinated protein accumulation, cytoplasmic inclusion body formation, and apoptosis in hepatocytes. Trehalose is a non-reducing disaccharide that has been shown to activate autophagy. It has been reported to decrease aggregate-prone proteins and ameliorate cytotoxicity in neurodegenerative disease models. However, the effects of trehalose in hepatocytes are unclear. METHODS We show here that trehalose activated autophagy and reduced endoplasmic reticulum stress, cytoplasmic inclusion body formation, and apoptosis in proteasome inhibitor-treated liver-derived cultured cells. CONCLUSION To our knowledge, this is the first report showing that trehalose activates autophagy and has cytoprotective effects in hepatocytes. Our findings suggest that trehalose can become a therapeutic agent for endoplasmic reticulum stress-related liver diseases.
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Affiliation(s)
- Yuichi Honma
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Miyuki Sato-Morita
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuka Katsuki
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hitomi Mihara
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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14
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Baba R, Amano Y, Wada Y, Kumazawa K. Characterization of the Potent Odorants Contributing to the Characteristic Aroma of Matcha by Gas Chromatography-Olfactometry Techniques. J Agric Food Chem 2017; 65:2984-2989. [PMID: 28343386 DOI: 10.1021/acs.jafc.7b00421] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The odorants contributing to the characteristic aroma of matcha were investigated by analysis of the headspace samples and the volatile fractions prepared by a combination of solvent extraction and the SAFE techniques using three matcha powders of different grades (high, medium, and low). Gas chromatography-olfactometry of the headspace samples (GCO-H) and aroma extract dilution analysis (AEDA) applied to the volatile fractions revealed 16 (FD factor ≥1) and 39 (FD factor ≥43) odor-active peaks, respectively. Among them, 14 and 37 of the odorants, most of which were newly detected in matcha, were identified or tentatively identified by GC-MS and GC-O, respectively. By comparing the perceived odorants of three matcha powders, it was revealed that eight compounds with sweet, green, metallic, and floral notes showed high flavor dilution (FD) factors irrespective of the grades. In addition, some odorants were suggested to influence the characteristic aroma of each grade. Furthermore, trans-4,5-epoxy-(E)-2-decenal, one of the potent odorants of matcha, was revealed to exist as a racemic mixture in matcha. This result suggested that trans-4,5-epoxy-(E)-2-decenal is formed by a nonenzymatic reaction in matcha, different from that in black tea, and that the unique manufacturing process of matcha has a close connection with its formation.
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Affiliation(s)
- Ryoko Baba
- Ogawa & Company, Ltd. , 15-7 Chidori, Urayasushi, Chiba 279-0032, Japan
| | - Yohei Amano
- Ogawa & Company, Ltd. , 15-7 Chidori, Urayasushi, Chiba 279-0032, Japan
| | - Yoshiyuki Wada
- Ogawa & Company, Ltd. , 15-7 Chidori, Urayasushi, Chiba 279-0032, Japan
| | - Kenji Kumazawa
- Ogawa & Company, Ltd. , 15-7 Chidori, Urayasushi, Chiba 279-0032, Japan
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15
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Baba R, Nakamura M, Kumazawa K. Identification of the Potent Odorants Contributing to the Characteristic Aroma of Darjeeling Black Tea Infusion. J JPN SOC FOOD SCI 2017. [DOI: 10.3136/nskkk.64.294] [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: 11/03/2022]
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16
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Ishimatsu N, Miyamoto T, Ueno H, Hasegawa E, Kuma A, Fujimoto Y, Bando K, Nakamata J, Furuno Y, Serino R, Baba R, Morimoto H, Doi Y, Tamura M, Otsuji Y. Corrigendum to "High glucose concentration-induced expression of pentraxin-3 in a rat model of continuous peritoneal dialysis". Histol Histopathol 2016; 32:649. [PMID: 28032888 DOI: 10.14670/hh-11-865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This correct the article DOI: 10.14670/HH-11-756.
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Affiliation(s)
- Nana Ishimatsu
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan.,Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Tetsu Miyamoto
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan.
| | - Hiromichi Ueno
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Emi Hasegawa
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Akihiro Kuma
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yoko Fujimoto
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Kenichiro Bando
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Junichi Nakamata
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yumi Furuno
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Ryota Serino
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yoshiaki Doi
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Masahito Tamura
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yutaka Otsuji
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
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Teramachi J, Inagaki Y, Shinohara H, Okamura H, Yang D, Ochiai K, Baba R, Morimoto H, Nagata T, Haneji T. PKR regulates LPS-induced osteoclast formation and bone destructionin vitroandin vivo. Oral Dis 2016; 23:181-188. [DOI: 10.1111/odi.12592] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/28/2016] [Accepted: 10/04/2016] [Indexed: 11/30/2022]
Affiliation(s)
- J Teramachi
- Department of Histology and Oral Histology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - Y Inagaki
- Department of Periodontology and Endodontology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - H Shinohara
- Department of Histology and Oral Histology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
- Department of Periodontology and Endodontology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - H Okamura
- Department of Histology and Oral Histology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - D Yang
- Department of Histology and Oral Histology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - K Ochiai
- Department of Basic Science; School of Veterinary Nursing and Technology; Faculty of Veterinary Science; Nippon Veterinary and Life Science University; Musashino Tokyo Japan
| | - R Baba
- Department of Anatomy; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
| | - H Morimoto
- Department of Anatomy; School of Medicine; University of Occupational and Environmental Health; Kitakyushu Japan
| | - T Nagata
- Department of Periodontology and Endodontology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - T Haneji
- Department of Histology and Oral Histology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
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Miyagawa K, Oe S, Honma Y, Izumi H, Baba R, Harada M. Lipid-Induced Endoplasmic Reticulum Stress Impairs Selective Autophagy at the Step of Autophagosome-Lysosome Fusion in Hepatocytes. Am J Pathol 2016; 186:1861-1873. [PMID: 27157992 DOI: 10.1016/j.ajpath.2016.03.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 02/18/2016] [Accepted: 03/04/2016] [Indexed: 02/08/2023]
Abstract
Blockage of hepatic autophagic degradation system occurs in obesity and is associated with the development of nonalcoholic fatty liver disease. However, the mechanism of this blockage remains unclear. We found a high-fat diet induced accumulation of autophagosomes in the mice livers. However, autophagy substrates such as p62 and ubiquitinated proteins also accumulated in the livers in this model. These findings indicate the possibility that a high-fat diet impairs autophagic flux in the liver. Then, to assess the autophagic flux in more detail, we performed analyses of autophagic flux in cultured hepatocytes exposed to monounsaturated fatty acids (FAs) or saturated FAs (SFAs). SFAs but not monounsaturated FAs suppressed degradation of contents in the autophagosomes. We analyzed each stage of the autophagy pathway (ie, autophagosome formation, autophagosome-lysosome fusion, lysosomal degradation) in cultured hepatocytes treated with monounsaturated FAs or SFAs and found that SFAs impaired autophagosome-lysosome fusion. This impairment occurred in an endoplasmic reticulum stress-dependent manner. Moreover, ubiquitin and p62-positive inclusions observed in high-fat diet-fed mice livers and SFA-treated cells were sequestered within autophagosomes. We also found that SFA-induced accumulation of Ser351-phosphorylated p62, which is indispensable for selective autophagy, further increased on administration of a lysosomal proteinase inhibitor. Although lipid-induced endoplasmic reticulum stress interferes with the autophagosome-lysosome fusion, selective autophagic sequestration of aggregated proteins is not inhibited.
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Affiliation(s)
- Koichiro Miyagawa
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
| | - Shinji Oe
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yuichi Honma
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Masaru Harada
- Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
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Ishimatsu N, Miyamoto T, Ueno H, Hasegawa E, Kuma A, Fujimoto Y, Bando K, Nakamata J, Furuno Y, Serino R, Baba R, Morimoto H, Doi Y, Tamura M, Otsuji Y. High glucose concentration-induced expression of pentraxin-3 in a rat model of continuous peritoneal dialysis. Histol Histopathol 2016; 31:1251-8. [PMID: 26975967 DOI: 10.14670/hh-11-756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Continuous exposure to peritoneal dialysis fluids (PDFs) is associated with pathological responses such as persistent micro-inflammation, which leads to ultrafiltration failure. Pentraxin-3 (PTX3), a multifunctional soluble pattern recognition receptor, is produced at sites of inflammation by a wide range of cell types. This study investigates the in vivo expression of PTX3 in the peritoneal membrane of a rat continuous peritoneal dialysis (PD) model, as well as the effect of high glucose on the in vitro expression of PTX3. METHODS The expression of PTX3 was analyzed using RT-PCR, real-time PCR, immunohistochemistry and western blotting in a PD rat model receiving saline or conventional PDF containing 3.86% glucose for 8 weeks. The effects of high glucose on the expression of PTX3 were examined in cultured rat peritoneal mesothelial cells (RPMCs), mouse macrophage-like cells, and mouse fibroblasts. RESULTS In a rat model of PD, eight-week instillation of the conventional PDF produced increased submesothelial thickening, followed by substantially enhanced PTX3 protein levels in the submesothelial layer of peritoneal membrane. PTX3 was detected in peritoneal mesothelial cells, macrophages and fibroblasts in the thickened submesothelial area. Glucose was found to induce PTX3 protein expression in RPMCs as well as macrophage-like cells and fibroblasts. CONCLUSION Continuous exposure to conventional PDF induces PTX3 expression in the peritoneal membrane of rats. High glucose may be involved in the mechanism of PDF-induced local micro-inflammation in the peritoneum.
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Affiliation(s)
- Nana Ishimatsu
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan.,Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Tetsu Miyamoto
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan.
| | - Hiromichi Ueno
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Emi Hasegawa
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Akihiro Kuma
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yoko Fujimoto
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Kenichiro Bando
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Junichi Nakamata
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yumi Furuno
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Ryota Serino
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Ryoko Baba
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Hiroyuki Morimoto
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yoshiaki Doi
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Masahito Tamura
- Kidney Center, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
| | - Yutaka Otsuji
- The Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Iseigaoka, Yahatanishi, Kitakyushu, Japan
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Kwan Z, Yeoh CA, Mohd Affandi A, Alias FA, Hamid M, Baharum N, Yong ASW, Baba R. Causes of mortality in patients with psoriasis in Malaysia - Evidence from the Malaysian Psoriasis Registry. Med J Malaysia 2015; 70:273-277. [PMID: 26556114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Patients with severe psoriasis, namely those requiring phototherapy or systemic treatment, have an increased risk of death. The aim of this study was to determine the prevalence, aetiology and risk factors for mortality among adult patients aged 18 years and above with psoriasis in Malaysia. METHODS This was a retrospective study involving adult patients notified by dermatologists to the Malaysian Psoriasis Registry between July 2007 and December 2013. Data were cross-checked against the National Death Registry. Patients certified dead were identified and the cause of death was analysed. Multivariate analysis using multiple logistic regression were conducted on potential factors associated with higher risk of mortality. RESULTS A total of 419 deaths were identified among the 9775 patients notified. There were four significant risk factors for higher mortality: age>40 years (age 41-60 years old, Odds Ratio (OR) 2.70, 95%CI 1.75, 4.18; age>60 years OR 7.46, 95%CI 4.62, 12.02), male gender (OR 1.72, 95%CI 1.33,2.22), severe psoriasis with body surface area (BSA) >10% (OR 1.52, 95%CI 1.19, 1.96) and presence of at least one cardiovascular co-morbidity (OR 1.67, 95% CI 1.30, 2.14). Among the 301 patients with verifiable causes of death, the leading causes were infection (33.9%), cardiovascular disease (33.6%) and malignancy (15.9%). CONCLUSION Infection was the leading cause of death among psoriasis patients in Malaysia. Although cardiovascular diseases are well-known to cause significant morbidity and mortality among psoriasis patients, the role of infections and malignancy should not be overlooked.
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Affiliation(s)
- Z Kwan
- University Malaya Medical Centre, Department of Medicine, Division of Dermatology, Lembah Pantai 59100, Kuala Lumpur, Malaysia.
| | - C A Yeoh
- Hospital Kuala Lumpur, Department of Dermatology, Kuala Lumpur, Malaysia
| | - A Mohd Affandi
- Hospital Kuala Lumpur, Department of Dermatology, Kuala Lumpur, Malaysia
| | - F A Alias
- Hospital Kuala Lumpur, Department of Dermatology, Kuala Lumpur, Malaysia
| | - M Hamid
- National Clinical Research Centre, Biostatistic Unit, Kuala Lumpur, Malaysia
| | - N Baharum
- National Clinical Research Centre, Biostatistic Unit, Kuala Lumpur, Malaysia
| | - A S W Yong
- University Malaya Medical Centre, Department of Medicine, Division of Dermatology, Lembah Pantai 59100, Kuala Lumpur, Malaysia
| | - R Baba
- Hospital Melaka, Department of Dermatology, Melaka, Malaysia
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Ishimatsu N, MIyamoto T, Morimoto H, Nakamata J, Baba R, Ueno H, Fujimoto Y, Bando K, Furuno Y, Serino R, Otsuji Y, Tamura M. FP582PENTRAXIN3 EXPRESSION IN A RAT MODEL OF PERITONEAL DIALYSIS. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv180.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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22
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Shimizu S, Takao S, Matsuura T, Miyamoto N, Baba R, Umekawa T, Matsuda K, Sasaki T, Nagamine Y, Umegaki K, Shirato H. Realization of the Cone Beam CT by FPDs That Mounted on the Spot-Scanning Dedicated Proton Beam Gantry. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2607] [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: 10/24/2022]
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23
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Baba R, Kumazawa K. Characterization of the potent odorants contributing to the characteristic aroma of Chinese green tea infusions by aroma extract dilution analysis. J Agric Food Chem 2014; 62:8308-13. [PMID: 25088347 DOI: 10.1021/jf502308a] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The volatile fractions of three famous Chinese green tea cultivar infusions (Longjing, Maofeng, and Biluochun) were prepared by a combination of the adsorptive column method and the SAFE techniques. The aroma extract dilution analysis (AEDA) applied to the volatile fractions revealed 58 odor-active peaks with flavor dilution (FD) factors between 4(1) and 4(7). Forty-six of the odorants, which included six odorants that have not been reported in the literature in Chinese green tea (2-isopropyl-3-methoxypyrazine, 2-ethenyl-3,5-dimethylpyrazine, cis-4,5-epoxy-(E)-2-decenal, 4-ethylguaiacol, (E)-isoeugenol, and 3-phenylpropionic acid), were identified or tentatively identified by GC-MS and GC-O. Among the perceived odorants, 4-hydroxy-2,5-dimethyl-3(2H)-furanone, 3-hydroxy-4,5-dimethyl-2(5H)-furanone, coumarin, vanillin, geraniol, (E)-isoeugenol, and 2-methoxyphenol showed high FD factors in all of the cultivars, irrespective of the cultivar or harvesting season, suggesting that these seven odorants are essential for the aroma of Chinese green tea. On the other hand, the contents of the odorants, FD factors of which were uneven between the cultivars, were suggested to influence the characteristic aroma of each cultivar. In addition, the formation mechanism of (E)-isoeugenol, one of the odorants which have not been reported in the literature with a high FD factor common to all the cultivars, was investigated, and it was suggested that the (E)-isoeugenol content of the tea products has a close correlation with the manufacturing process of the tea leaves.
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Affiliation(s)
- Ryoko Baba
- Ogawa & Company, Ltd., 15-7 Chidori Urayasushi, Chiba 279-0032, Japan
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24
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Hani AFM, Baba R, Shamsuddin N, Nugroho H. Determination of melanin types and relative concentrations: an observational study using a non-invasive inverse skin reflectance analysis. Int J Cosmet Sci 2014; 36:451-8. [PMID: 24925684 DOI: 10.1111/ics.12147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/05/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Melanin is a major skin colour pigment that is made up of eumelanin (the dark brown-black colour) and pheomelanin (the light red-yellow colour) pigments. Skin-whitening products typically contain depigmentation agents that reduce the level of pigmentation by changing the pheomelanin-eumelanin production. Similarly, in skin pigment treatment of skin disorders, the melanin production is managed accordingly. To assess and improve treatment efficacy, it is important to have a measurement tool that is capable of determining the melanin types objectively. So far, the efficacy assessment is subjective. In this study, an inverse skin reflectance pigmentation analysis system that determines eumelanin and pheomelanin content is developed and evaluated in an observational study involving 36 participants with skin photo type IV. METHODS The reflectance spectra of the left forearms of participants were analysed by the pigmentation analysis system to determine their skin parameters--pheomelanin and eumelanin concentrations, melanosome volume fraction, and epidermal thickness. The determined skin parameters are then inputted into the realistic skin model (RSM) of the Advanced Systems Analyses Program (asap®) to generate the ground truth reflectance spectra for the given skin parameters to validate the system. RESULTS The developed pigmentation analysis system is found to be accurate with a spectral error of 0.0163 ± 0.009 between measured reflectance and the reflectance output of the analysis system and RSM. The regression analysis shows a strong linear relationship (R(2) = 0.994) indicating good precision. The relative concentrations of pheomelanin (38.23 ± 15.04) and eumelanin (1.68 ± 0.91) analysed by the system gives a ratio of pheomelanin to eumelanin of 0.048 ± 0.029; this value is consistent with previously reported figure of 0.049. CONCLUSION The proposed pigmentation analysis system is able to determine melanin types and their relative concentrations. It has the potential to assess the efficacy of the skin-whitening and pigmentation treatments objectively in a non-invasive manner.
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Affiliation(s)
- A F M Hani
- Centre for Intelligent Signal and Imaging Research, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750, Tronoh, Perak Darul Ridzuan, Malaysia
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25
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Takao S, Shimizu S, Miyamoto N, Matsuura T, Toramatsu C, Nihongi H, Yamada T, Matsuda K, Sasaki T, Nagamine Y, Baba R, Umekawa T, Umegaki K, Shirato H. SU-E-CAMPUS-J-03: Commissioning of the On-Board Cone-Beam CT System Equipped On the Rotating Gantry of a Proton Therapy System. Med Phys 2014. [DOI: 10.1118/1.4889023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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26
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Nguyen K, Suzuki H, Ohbuchi T, Wakasugi T, Koizumi H, Hashida K, Baba R, Morimoto H, Doi Y. Possible participation of acidic pH in bone resorption in middle ear cholesteatoma. Laryngoscope 2013; 124:245-50. [DOI: 10.1002/lary.23883] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Khac‐Hung Nguyen
- Department of OtorhinolaryngologyThai Nguyen University of Medicine and PharmacyThai NguyenVietnam
| | - Hideaki Suzuki
- Department of OtorhinolaryngologySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Toyoaki Ohbuchi
- Department of OtorhinolaryngologySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Tetsuro Wakasugi
- Department of OtorhinolaryngologySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Hiroki Koizumi
- Department of OtorhinolaryngologySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Koichi Hashida
- Department of OtorhinolaryngologySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Ryoko Baba
- Department of AnatomySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Hiroyuki Morimoto
- Department of AnatomySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - Yoshiaki Doi
- Department of AnatomySchool of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
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27
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Fukudome I, Kobayashi M, Dabanaka K, Maeda H, Okamoto K, Okabayashi T, Baba R, Kumagai N, Oba K, Fujita M, Hanazaki K. Diamine oxidase as a marker of intestinal mucosal injury and the effect of soluble dietary fiber on gastrointestinal tract toxicity after intravenous 5-fluorouracil treatment in rats. Med Mol Morphol 2013; 47:100-7. [PMID: 24005798 DOI: 10.1007/s00795-013-0055-7] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 08/08/2013] [Indexed: 12/13/2022]
Abstract
The level of plasma diamine oxidase (DAO) activity is associated with the maturation and integrity of small intestinal mucosa. This study in rats investigated whether a decreased level of plasma DAO could reflect the severity of mucosal injury due to intravenous 5-fluorouracil (5-FU) treatment. The beneficial effect of soluble dietary fiber (SDF) on preventing diarrhea after 5-FU treatment was also examined. To induce diarrhea, 5-FU (50 mg/kg/day for four days) was administered via the tail vein with or without SDF supplementation. After 5-FU treatment, the majority of rats developed moderate to severe diarrhea, and levels of plasma DAO activity significantly decreased compared to those of control group (P < 0.05). Scanning electron microscopy revealed disarrangement of the small intestinal villi. Contrarily, the rats supplemented with SDF had diarrhea less frequently (50.0 vs. 91.7 %, P = 0.025) on day five, and DAO activity levels were significantly higher than in those rats administered 5-FU alone (8.25 ± 5.34 vs. 5.50 ± 4.32, P = 0.023). In conclusion, plasma DAO activity decreases in response to severe intestinal mucosal injury after 5-FU treatment, and SDF supplementation might be a practical and useful treatment for reducing the intestinal toxicity of 5-FU.
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Affiliation(s)
- Ian Fukudome
- Department of Surgery, Kochi Medical School, Kochi, Japan
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28
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Yamagishi T, Sugimoto S, Baba R, Takato H, Okumura T, Takahashi S, Ogihara Y, Ozawa S, Ebe K. SU-E-T-325: Study of the Accuracy of the Dynamic Tracking System Using Radiographic Films. Med Phys 2013. [DOI: 10.1118/1.4814759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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29
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Sakuma Y, Baba R, Arita K, Morimoto H, Fujita M. Food allergens are transferred intact across the rat blood-placental barrier in vivo. Med Mol Morphol 2013; 47:14-20. [PMID: 23475277 DOI: 10.1007/s00795-013-0029-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 12/07/2012] [Indexed: 10/27/2022]
Abstract
We investigated the mechanism of transplacental macromolecular transport in rats on the nineteenth day of pregnancy using tracers, transmission electron microscopy and immunohistochemistry. The blood-placental barrier of full-term rat placentas was composed of a trilaminar layer of trophoblast cells that separates the fetal capillaries from the maternal blood spaces: a layer of cytotrophoblasts lining the maternal blood space and a bilayer of syncytiotrophoblast surrounding the fetal capillaries. Horseradish peroxidase, intravenously injected into the maternal circulation, was found in the maternal blood spaces, the interspaces between the cytotrophoblasts and the syncytiotrophoblast I, many pits and small vesicles in the syncytiotrophoblast I, vesicles of the syncytiotrophoblast II, fetal connective tissue and fetal capillaries. Intravenously injected ovalbumin was detected in the maternal blood spaces, a trilaminar layer and the fetal capillaries. Neonatal Fc receptor (FcRn), a receptor for IgG, was localized at the maternal side of the blood-placental barrier. These results show that the structure of the rat blood-placental barrier is quite similar to the human blood-placental barrier, and non-specific macromolecules and food allergens may penetrate through the blood-placental barrier of the full-term placenta from the maternal to fetal circulation mediated by FcRn.
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Affiliation(s)
- Yoshiko Sakuma
- Graduate School of Health and Nutrition Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jyonan-ku, Fukuoka, 814-0198, Japan
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Morimoto H, Baba R. [Cellular stress and eIF-2alpha kinase]. J UOEH 2012; 34:331-338. [PMID: 23270257 DOI: 10.7888/juoeh.34.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The alpha subunit of eukaryotic initiation factor -2 (eIF-2alpha) is a molecule related to the first step of protein synthesis initiation in eukaryotes. eIF-2alpha is phosphorylated in response to a wide variety of stimuli, including viral infection, starvation, ischemia, and heat shock. Four mammalian eIF-2alpha kinases have been reported: PKR (double-stranded RNA dependent protein kinase), HRI (heme-regulated inhibitor), GCN2 (general control non-derepressible 2), and PERK (PKR-like endoplasmic reticulum kinase). Each kinase contains unique domains that recognize a different cellular stress and transmits the signals to eIF-2alpha. Hence, eIF-2alpha is considered to be a key molecule in integrated stress response. Understanding eIF-2alpha as a component of the integrated stress response may be helpful in revealing stress sitmulus and the responses to stress at the cellular level. This knowledge will contribute to the development of preventive and therapeutic approaches to stress mediated diseases.
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Affiliation(s)
- Hiroyuki Morimoto
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
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31
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Mazlin MB, Chang CC, Baba R. Comorbidities associated with psoriasis - data from the malaysian psoriasis registry. Med J Malaysia 2012; 67:518-521. [PMID: 23770870] [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: 06/02/2023]
Abstract
All around the world, there is growing evidence of the association between psoriasis and comorbidities which increase the risk of cardiovascular disease. This study aims to determine the prevalence of various comorbidities among adult psoriasis patients in Malaysia. A cross-sectional study was conducted among patients in the Malaysian Psoriasis Registry from January 2007 to December 2008. A total of 2,267 adult patients with psoriasis from 13 dermatology centers were included. Prevalence of various comorbidities were: hypertension 25.9%, diabetes mellitus 17.7 %, dyslipidaemia 17.8%, overweight 33.2%, obesity 20.7%, ischaemic heart disease 5.8% and cerebrovascular disease 1.4%. These comorbidities were more prevalent in patients with psoriasis of late-onset and longer duration. Active screening of these comorbidities in all adult psoriasis patients is recommended.
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Affiliation(s)
- M B Mazlin
- Hospital Kuala Lumpur, Department of Dermatology, Jalan Pahang, 50586 Kuala Lumpur, Malaysia.
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Sugimoto S, Ozawa S, Takatou H, Tokuyama K, Maruyama H, Yamagishi T, Baba R, Ebe K, Sasai K. SU-E-T-497: Study of Restricted Mass Stopping Power Ratio in Small Electron Tube Fields. Med Phys 2012; 39:3819. [PMID: 28517487 DOI: 10.1118/1.4735586] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Electron tubes with small radii are useful to treat narrow regions which cannot accommodate normal electron applicators. In small electron fields, it is not trivial to estimate restricted mass stopping power ratio (MSR), which is needed to evaluate dose from ion chamber measurement. We studied MSRs in small electron tube fields using the Monte Carlo simulation. METHODS Electron tubes with radii, 3 and 2.5 cm, were used in this study. Nominal electron energies were 6 and 9 MeV. There were two types of tubes. One has a normal cut but the other has a 45-degree cut. For the normal cut tube, percent depth dose (PDD) in water was evaluated along the center of axis (CAX) of a beam. For the 45-degree cut tube, PDD was evaluated along the vertical line from the intersection of the CAX and the phantom surface with 45-degree gantry angle. The MSRs and mean electron energies were calculated using the Monte Carlo simulation. RESULTS We found good agreement between the measured and calculated PDDs. The changes of mean energies from those in the 10×10 cm2 field at the depth of maximum dose (dmax) were very small for the normal cut electron tubes. For the 45-degree cut tubes, the changes of mean energies at dmax were less than 1 MeV. The MSRs in the normal cut tube fields were almost the same as those in the 10×10 cm2 field at the corresponding depths. The MSRs for the 45-degree cut tubes deviated from those in the 10×10 cm2 by about 1% (1.5 % at most). CONCLUSIONS We evaluated the mean energies and MSRs in small electron tube fields. The deviations of them from the values in the 10×10 cm2 were small. The maximum difference of MSR was 1.5% in 45-degree cut tube fields. This work was supported by KAKENHI (23791449), Japan Society for the Promotion of Science, and Cancer Professional Training Plan, The Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Affiliation(s)
- S Sugimoto
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - S Ozawa
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - H Takatou
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - K Tokuyama
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - H Maruyama
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - T Yamagishi
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - R Baba
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - K Ebe
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
| | - K Sasai
- Juntendo UniversityGrad. School of Med., Bunkyo, Tokyo.,Joetsu General Hostpital, Joetsu, Niigata
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Liu J, Liu J, Liu Y, Xu Y, Zhao X, Qian J, Sun B, Xing C, Kanda R, Hamada C, Nakano T, Wakabayashi K, Io H, Horikoshi S, Tomino Y, Ishimatsu N, Miyamoto T, Morimoto H, Nakamata J, Baba R, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Nakamata J, Morimoto H, Baba R, Ishimatsu N, Miyamoto T, Kanegae K, Serino R, Kabashima N, Otsuji Y, Doi Y, Tamura M, Kusumoto T, Fukami K, Yamagishi SI, Ueda S, Kaida Y, Hazama T, Nakayama Y, Ando R, Obara N, Okuda S, Tamura M, Matsumoto M, Miyamoto T, Kanegae K, Furuno Y, Serino R, Kabashima N, Otsuji Y, Bang-Gee H, Mazzotta L, Rosati A, Carlini A, Henriques VT, Zangiacomi Martinez E, Divino-Filho JC, Pecoits-Filho R, Cardeal Da Costa JA, Henriques VT, Henriques VT, Gama Axelsson T, Lindholm B, Carrero JJ, Heimburger O, Stenvinkel P, Qureshi AR, Akazawa M, Uno T, Kanda E, Maeda Y, Aktsiali M, Aktsiali M, Antonopoulou S, Tsiolaki K, Bakirtzi N, Patrinou A, Georgopoulou M, Liaveri P, Afentakis N, Tsirpanlis G, Hasegawa T, Nishiwaki H, Hirose M, Komukai D, Tayama H, Koiwa F, Yoshimura A, Lui SL, Lui S, Yung S, Tang C, Ng F, Lo WK, Chan TM, Koo HM, Doh FM, Yoo DE, Oh HJ, Yoo TH, Choi KH, Kang SW, Han DS, Han SH, Fernandes N, Fernandes N, Bastos MG, Gianotti Franco MR, Chaoubah A, Gloria Lima MD, Pecoits-Filho R, Divino-Filho JC, Qureshi AR, Kang S, Do J, Cho K, Park J, Yoon K, Chen JB, Cheng BC, Chen TC, Su YJ, Wu CH, Park Y, Jeon J, Tsikeloudi M, Pateinakis P, Patsatsi K, Manou E, Sotiriadis D, Tsakiris D, Teixeira L, Rodrigues A, Carvalho MJ, Cabrita A, Mendonca D, Kang S, Do J, Park J, Cho K, Yoon K, Bruschi M, Candiano G, Santucci L, Luzio S, Cannavo R, Ghiggeri GM, Verrina E, Varadarajan Y, Raju B, Cho KH, Do J, Kang S, Park JW, Yoon KW, Kim TW, Kimmel M, Braun N, Latus J, Alscher MD, Struijk D, Van Esch S, Krediet RT, Fernandes N, Van den Beukel T, Hoekstra T, Tirapani L, De Andrade Bastos K, Pecoits-Filho R, Qureshi AR, Bastos M, Dekker F, Divino-Filho JC, Yasuhisa T, Kanai H, Harada K, Kawai Y, Sugiyama H, Ito Y, Tsuruya K, Yoshida H, Maruyama H, Goto S, Nakayama M, Nakamoto H, Morinaga H, Matsuo S, Makino H, DI Gioia MC, Gallar P, Laso N, Rodriguez I, Cobo G, Oliet A, Hynostroza J, Herrero JC, Mon C, Ortiz M, Vigil A, Tomo T, Portoles J, Uta S, Uta S, Tato AM, Lopez-Sanchez P, Rivera M, Rodriguez-Pena R, Del Peso G, Ortega M, Felipe C, Tsampikaki E, Aperis G, Kaikis A, Paliouras C, Karvouniaris N, Maragaki M, Alivanis P, Kortus-Gotze B, Hoferhusch T, Hoyer J, Martino F, Kaushik M, Rodighiero MP, Creapldi C, Ronco C, Lacquaniti A, Lacquaniti A, Donato V, Fazio MR, Lucisano S, Cernaro V, Lupica R, Buemi M, Aloisi C, Uno T, Akazawa M, Kanda E, Maeda Y, Bavbek Ruzgaresen N, Secilmis S, Yilmaz H, Akcay A, Duranay M, Akalin N, Akalin N, Altiparmak MR, Trabulus S, Yalin AS, Ataman R, Serdengecti K, Schneider K, Bator B, Niko B, Braun N, Peter F, Ulmer C, Joerg L, Martin K, Dagmar B, German O, Fabian R, Juergen D, Stephan S, Dominik A, Latus J, Latus J, Ulmer C, Fritz P, Rettenmaier B, Hirschburger S, Segerer S, Biegger D, Lang T, Ott G, Kimmel M, Alscher MD, Braun N, Habib M, Korte M, Hagen M, Dor F, Betjes M, Habib M, Hagen M, Korte M, Zietse R, Dor F, Betjes M, Latus J, Latus J, Ulmer C, Fritz P, Rettenmaier B, Biegger D, Lang T, Ott G, Scharpf C, Kimmel M, Alscher MD, Braun N, Habib M, Korte M, Zietse R, Betjes M, Chang TI, Shin DH, Oh HJ, Kang SW, Han DS, Yoo TH, Han SH, Choi HY, Lee YK, Kim BS, Han SH, Yoo TH, Park HC, Lee HY, Horimoto N, Tuji K, Kitamura S, Sugiyama H, Makino H, Isshiki R, Isshiki R, Iwagami M, Tsutsumi D, Mochida Y, Ishioka K, Oka M, Maesato K, Moriya H, Ohtake T, Hidaka S, Kobayashi S, Higuchi C, Tanihata Y, Ishii M, Sugimoto H, Sato N, Kyono A, Ogawa T, Nishimura H, Otsuka K, Cho KH, Do JY, Kang S, Park JW, Yoon KW, Kim TW, Du Halgouet C, Latifa A, Anne Sophie V, Emmanuel D, Christine R, Francois V, Grzelak T, Czyzewska-Majchrzak L, Kramkowska M, Witmanowski H, Czyzewska K, Janda K, Krzanowski M, Dumnicka P, Sulowicz W, Rroji M, Seferi S, Barbullushi M, Likaj E, Petrela E, Thereska N, Cabiddu G, Dessi E, Arceri A, Laura P, Manca E, Conti M, Cao R, Pani A, Liao CT, Vega Vega O, Mendoza de la Garza A, Correa-Rotter R, Ueda A, Nagai K, Morimoto M, Hirayama A, Owada S, Tonozuka Y, Saito C, Saito C, Yamagata K, Matsuda A, Tayama Y, Ogawa T, Iwanaga M, Noiri C, Hatano M, Kiba T, Kanozawa K, Katou H, Hasegawa H, Mitarai T, Ros-Ruiz S, Ros-Ruiz S, Fuentes-Sanchez L, Jironda-Gallegos C, Gutierrez-Vilches E, Garcia-Frias P, Hernandez-Marrero D, Kang S, Lee S, Cho K, Park J, Yoon K, Do J, Lai X, Chen W, Guo Z, Braide M, Cristina V, Popa SG, Maria M, Eugen M, Martino F, DI Loreto P, DI Loreto P, Ronco C, Rroji M, Seferi S, Barbullushi M, Petrela E, Spahia N, Likaj E, Thereska N, Sanchez Macias LO, Sanchez Macias LO, Lares Castellanos KI, Hernandez Pacheco JA, Vega Vega O, Correa Rotter R, Pedro Ventura A, Olivia S, Teixeira L, Joana V, Francisco F, Maria Joao C, Antonio C, Rodrigues AS, Atas N, Erten Y, Erten Y, Onec K, Inal S, Topal S, Akyel A, Celik B, Okyay GU, Tavil Y, Zeiler M, Monteburini T, Agostinelli RM, Marinelli R, Santarelli S, Erten Y, Erten Y, Inal S, Onec K, Atas N, Okyay GU, Yaylaci C, Sahin G, Tavil Y, Guz G, Sindel S, Pinho A, Cabrita A, Malho Guedes A, Fragoso A, Carreira H, Pinto I, Bernardo I, Leao P, Janda K, Janda K, Krzanowski M, Kusnierz-Cabala B, Dumnicka P, Krasniak A, Chowaniec E, Tabor-Ciepiela B, Sulowicz W, Turkmen K, Ozbek O, Kayrak M, Samur C, Guler I, Tonbul HZ, Rusai K, Herzog R, Kratochwill K, Kuster L, Aufricht C, Meier CM, Fliser D, Schilling MK, Klingele M, Fukasawa M, Fukasawa M, Takeda M, Kamiyama M, Song YR, Kim HJ, Kim SG, Kim JK, Noh JW, Lee YK, Yoon JW, Koo JR. Peritoneal dialysis. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kashiwagi E, Izumi H, Yasuniwa Y, Baba R, Doi Y, Kidani A, Arao T, Nishio K, Naito S, Kohno K. Enhanced expression of nuclear factor I/B in oxaliplatin-resistant human cancer cell lines. Cancer Sci 2010; 102:382-6. [PMID: 21087353 DOI: 10.1111/j.1349-7006.2010.01784.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Oxaliplatin is a third-generation platinum drug that has favorable activity in cisplatin-resistant cells. However, the molecular mechanisms underlying oxaliplatin resistance are not well understood. To investigate the molecular mechanisms involved, resistant cell lines were independently derived from colon cancer (DLD1) and bladder cancer (T24) cells. Oxaliplatin-resistant DLD1 OX1 and DLD1 OX2 cell lines were approximately 16.3-fold and 17.8-fold more resistant to oxaliplatin than the parent cell lines, respectively, and had 1.7- and 2.2-fold higher cross-resistance to cisplatin, respectively. Oxaliplatin-resistant T24 OX2 and T24 OX3 cell lines were approximately 5.0-fold more resistant to oxaliplatin than the parent cell line and had 1.9-fold higher cross-resistance to cisplatin. One hundred and fifty-eight genes commonly upregulated in both DLD1 OX1 and DLD1 OX2 were identified by microarray analysis. These genes were mainly involved in the function of transcriptional regulators (14.6%), metabolic molecules (14.6%), and transporters (9.5%). Of these, nuclear factor I/B (NFIB) was upregulated in all oxaliplatin-resistant cells. Downregulation of NFIB rendered cells sensitive to oxaliplatin, but not to cisplatin. Forced expression of NFIB induced resistance to oxaliplatin, but not to cisplatin. Taken together, these results suggest that NFIB is a novel and specific biomarker for oxaliplatin resistance in human cancers.
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Affiliation(s)
- Eiji Kashiwagi
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Teramachi J, Morimoto H, Baba R, Doi Y, Hirashima K, Haneji T. Double stranded RNA-dependent protein kinase is involved in osteoclast differentiation of RAW264.7 cells in vitro. Exp Cell Res 2010; 316:3254-62. [DOI: 10.1016/j.yexcr.2010.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 07/29/2010] [Accepted: 08/16/2010] [Indexed: 11/16/2022]
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Sato N, Morimoto H, Baba R, Nakamata J, Doi Y, Yamaguchi K. Functional expression of double-stranded RNA-dependent protein kinase in rat intestinal epithelial cells. J Cell Biochem 2010; 110:104-11. [PMID: 20213745 DOI: 10.1002/jcb.22513] [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: 11/09/2022]
Abstract
Intestinal epithelial cells (IECs) are exposed to external environment, microbial and viral products, and serve as essential barriers to antigens. Recent studies have shown that IECs express Toll-like receptors (TLRs) and respond to microbial components. The antimicrobial and antiviral barriers consist of many molecules including TLRs. To investigate the further component of this barrier in intestine, we examined the expression of double-stranded RNA-dependent protein kinase (PKR). PKR is a player in the cellular antiviral response and phosphorylates alpha-subunit of the eukaryotic translation initiation factor 2 (eIF-2alpha) to block protein synthesis and induces apoptosis. In this study, we showed that the expression of PKR was restricted to the cytoplasm of absorptive epithelial cells in the intestine of adult rat. We also demonstrated that PKR was expressed in the cultured rat intestinal epithelial cells (IEC-6). The level of PKR protein expression and the activity of alkaline phosphatase (ALP) increased in the cultured IEC-6 cells in a time-dependent manner. Inhibition of PKR by the 2-aminopurine treatment decreased ALP activity in the IEC-6 cells. Treatment of IEC-6 cells with synthetic double-stranded RNA (dsRNA) induced cell death in a dose-dependent manner. The addition of hydrocortisone also provoked suppression of PKR expression and ALP activity. This modulation might be mediated by signal transducers and activators of transcription-1 (STAT-1) protein. We concluded that PKR is expressed in IECs as potent barriers to antigens and is a possible modulator of the differentiation of rat IECs.
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Affiliation(s)
- Nagahiro Sato
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1, Iseigaoka, Yahatanishi, Kitakyushu 807-8555, Japan
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Miyamoto T, Tamura M, Kabashima N, Serino R, Shibata T, Furuno Y, Miyazaki M, Baba R, Sato N, Doi Y, Okazaki M, Otsuji Y. An integrin-activating peptide, PHSRN, ameliorates inhibitory effects of conventional peritoneal dialysis fluids on peritoneal wound healing. Nephrol Dial Transplant 2009; 25:1109-19. [PMID: 19926720 DOI: 10.1093/ndt/gfp601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bioincompatible peritoneal dialysis fluids (PDFs) cause pathological changes in the peritoneal membrane, related to membrane dysfunction and progressive peritoneal fibrosis. We investigated the effects of Pro-His-Ser-Arg-Asn (PHSRN) peptide, one of the fibronectin cell-binding domains that activates integrins and reinforces wound healing, on peritoneal remodelling in a rat peritoneal injury model undergoing peritoneal dialysis. METHODS The peritoneal mesothelial monolayer was removed by a stripping procedure in rats receiving conventional high glucose-containing PDF supplemented with or without PHSRN or control His-Ser-Pro-Asn-Hrg (HSPNR) peptides. Effects of PHSRN on cell motility and signalling molecules were examined in cultured rat peritoneal mesothelial cells (RPMCs) and normal rat kidney fibroblasts (NRKs). RESULTS The cytokeratin- and HBME-1-positive mesothelial cell monolayer was selectively removed by the procedure. By day 6, HBME-1-positive cells had regenerated to 53.3 +/- 6.5% of the peritoneal surface in the control group. Regeneration of the mesothelial layer was delayed in the PDF group (35.2 +/- 10.2%, P < 0.05), but PHSRN reversed the effects of PDF (51.7 +/- 9.6%, P < 0.05). PDF treatment increased thickening of granulomatous submesothelial tissue and numbers of ED1-, CD31- and alpha-smooth muscle actin-positive cells, but PHSRN ameliorated these effects. HSPNR had no effects on mesothelial regeneration or peritoneal wound healing. PHSRN, but not HSPNR, recovered glucose-induced inhibition of cell motility and phosphorylation of focal adhesion kinase and its downstream p130(Cas) in RPMCs and NRKs. CONCLUSIONS These results suggest that PHSRN has beneficial effects on peritoneal regeneration by reducing the inhibitory effects of conventional PDF on integrin-mediated wound healing.
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Affiliation(s)
- Tetsu Miyamoto
- Second Department of Internal Medicine, University of Occupational and Environmental Health School of Medicine, Kitakyushu, Japan
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Miyashita M, Yasuda M, Baba R, Iwase S, Teramoto R, Nakagawa K, Kizawa Y, Shima Y. Inter-rater reliability of proxy simple symptom assessment scale between physician and nurse: a hospital-based palliative care team setting. Eur J Cancer Care (Engl) 2009; 19:124-30. [PMID: 19709165 DOI: 10.1111/j.1365-2354.2008.00967.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Symptom management in palliative care requires reliable symptom assessment. We assessed the inter-rater reliability of a simple proxy symptom-assessment scale using the Japanese version of the Support Team Assessment Schedule (STAS-J) in a hospital-based palliative care team (HPCT) setting. By doing this, we assessed symptoms in a series of consecutive patients at two university hospitals with certified HPCTs within 2 days of referral and 7 days after. A physician and nurse assessed 20 symptoms. In total, 120 patients were assessed within 2 days of referral and 92 patients at 7 days after referral. As a result, we find that the intra-class correlation coefficients were 0.02-0.89 at referral and 0.20-0.92 at 7 days after. The perfect concordance rates were 37-89% at referral and 53-96% at 7 days after. The perfect or +/-1 concordance rates were 71-97% at referral and 73-100% at 7 days after. In conclusion, the symptom item of the STAS-J had high inter-rater reliability.
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Affiliation(s)
- M Miyashita
- Department of Adult Nursing/Palliative Care Nursing, School of Health Sciences and Nursing, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
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Leech CJ, Baba R, Dhar M. Spinal anaesthesia and non-invasive positive pressure ventilation for hip surgery in an obese patient with advanced chronic obstructive pulmonary disease. Br J Anaesth 2007; 98:763-5. [PMID: 17468098 DOI: 10.1093/bja/aem093] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 11/13/2022] Open
Abstract
We describe the use of non-invasive positive pressure ventilation combined with spinal anaesthesia to allow the insertion of a dynamic hip screw in an obese patient with advanced chronic obstructive pulmonary disease. The technique avoided the hazards of intubation and general anaesthesia in this high-risk patient.
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Affiliation(s)
- C J Leech
- Anaesthetic Department, Mayday University Hospital, Croydon, Thornton Heath, Surrey CR7 7YE, UK.
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Fujita M, Baba R, Shimamoto M, Sakuma Y, Fujimoto S. Molecular morphology of the digestive tract; macromolecules and food allergens are transferred intact across the intestinal absorptive cells during the neonatal-suckling period. Med Mol Morphol 2007; 40:1-7. [PMID: 17384982 DOI: 10.1007/s00795-006-0346-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2006] [Accepted: 10/17/2006] [Indexed: 11/29/2022]
Abstract
Food allergies represent an important medical problem throughout the developed world. The epithelium of the digestive tract is an important area of contact between the organism and its external environment. Accordingly, we must reconsider the transport of intestinal transepithelial macromolecules, including food allergens, in vivo. The intestinal epithelium of the neonatal-suckling rat is a useful model system for studies into endocytosis and transcytosis. Macromolecules and food allergens can be transferred intact with maternal immunoglobulins across the absorptive cells of duodenum and jejunum during the neonatal-suckling period. This review summarizes these observations as well as our recent molecular morphological studies.
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Affiliation(s)
- Mamoru Fujita
- Graduate School of Health and Nutrition Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jonan-ku, Fukuoka 814-0198, Japan.
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Barker GN, Baba R. Re: Near miss drug administration. Br J Anaesth 2006; 96:270-1. [PMID: 16468126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023] Open
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Fan YY, Baba R, Nagai Y, Miyatake A, Hosomi N, Kimura S, Sun GP, Kohno M, Fujita M, Abe Y, Nishiyama A. Augmentation of Intrarenal Angiotensin II Levels in Uninephrectomized Aldosterone/Salt-Treated Hypertensive Rats; Renoprotective Effects of an Ultrahigh Dose of Olmesartan. Hypertens Res 2006; 29:169-78. [PMID: 16755152 DOI: 10.1291/hypres.29.169] [Citation(s) in RCA: 29] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Recent studies have suggested that aldosterone plays a role in the pathogenesis of renal injury. In this study, we investigated whether local angiotensin II (Ang II) activity contributes to the progression of renal injury in aldosterone/salt-induced hypertensive rats. Uninephrectomized rats were treated with 1% NaCl in a drinking solution and one of the following combinations for 6 weeks: vehicle (2% ethanol, s.c.; n=9), aldosterone (0.75 mug/h, s.c.; n=8), aldosterone+Ang II type 1 receptor blocker olmesartan (10 mg/kg/day, p.o.; n=8), or aldosterone+olmesartan (100 mg/kg/day, p.o.; n=9). Aldosterone/salt-treated hypertensive rats exhibited severe proteinuria and renal injury characterized by glomerular sclerosis and tubulointerstitial fibrosis. Aldosterone/salt-induced renal injury was associated with augmented expression of angiotensin converting enzyme and Ang II levels in the renal cortex and medullary tissues. Renal cortical and medullary mRNA expression of transforming growth factor-beta (TGF-beta) and connective tissue growth factor (CTGF) as well as the collagen contents were increased in aldosterone/salt-treated hypertensive rats. Treatment with olmesartan (10 or 100 mg/kg/day) had no effect on blood pressure but attenuated proteinuria in a dose-dependent manner. Olmesartan at 10 mg/kg/day tended to decrease renal cortical and medullary Ang II levels, TGF-beta and CTGF expression, and collagen contents; however, these changes were not significant. On the other hand, an ultrahigh dose of olmesartan (100 mg/kg/day) significantly decreased these values and ameliorated renal injury. These data suggest that augmented local Ang II activity contributes, at least partially, to the progression of aldosterone/salt-dependent renal injury.
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Affiliation(s)
- Yu-Yan Fan
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan
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Baba R, Yamami M, Sakuma Y, Fujita M, Fujimoto S. Relationship between glucose transporter and changes in the absorptive system in small intestinal absorptive cells during the weaning process. Med Mol Morphol 2005; 38:47-53. [PMID: 16158180 DOI: 10.1007/s00795-004-0275-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2004] [Accepted: 07/23/2004] [Indexed: 10/25/2022]
Abstract
In the present study, we investigated the changes in the localization of the glucose transporter GLUT2 and the fructose transporter GLUT5 in small intestinal absorptive cells during postnatal development, especially during the weaning period, using immunohistochemistry and confocal laser scanning microscopy. In the jejunum, GLUT2 was observed within the apical and basolateral membrane domain of absorptive cells, especially in the middle part of the villi. In the suckling rat ileum, GLUT2 was found within the apical and basolateral membrane domain of absorptive cells, but after 18 or 19 days after birth, GLUT2 was found mainly within the apical membrane domain. GLUT5 was observed within the apical membrane domain of absorptive cells in the suckling rat jejunum. In the 18- or 19-day-old rat jejunum, GLUT5 was localized within the apical and basolateral membrane domain of absorptive cells in the lower part of the villi, but after weaning, GLUT5 was found within the apical and basolateral membrane domain of absorptive cells throughout the entire villi. In the suckling rat ileum, there was little GLUT5 in the absorptive cells. In the 18- or 19-day-old rat ileum, GLUT5 was localized within the apical membrane domain of absorptive cells in the lower part of the villi, but after weaning, GLUT5 was observed mainly within the apical membrane domain of absorptive cells throughout the entire villi. These results suggest that the localization of glucose transporters corresponds with a shift from neonatal-suckling to weaned absorptive cells during postnatal development.
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Affiliation(s)
- Ryoko Baba
- Graduate School of Health and Nutrition Sciences, Nakamura Gakuen University, Jyonan-ku, Fukuoka, Japan
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BARKER GN, Baba R. A Near Miss of accidental drug administration using pre filled drug syringes. Br J Anaesth 2005. [DOI: 10.1093/bja/el_276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ohmori M, Baba R, Miyazaki A, Sato H, Katano S, Sawaki A, Tanabe S, Masatuki N, Yasukawa T, Hasegawa A, Imade S, Sano A. P19 A study for the effect of tongue cleaning. Oral Dis 2005. [DOI: 10.1111/j.1601-0825.2005.01105_42.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
OBJECTIVES Cone beam CT (CBCT) requires a two-dimensional X-ray detector. In the several CBCT systems developed for dental imaging, detection has been by the combination of an X-ray image intensifier and charge-coupled device (CCD) camera. In this paper, we propose a new CBCT system in which the detector is of the flat-panel type and evaluate its performance in dental imaging. METHODS We developed a prototype CBCT that has a flat-panel-type detector. The detector consists of a CsI scintillator screen and a photosensor array. First, the flat panel detector and image intensifier detector were compared in terms of the signal-to-noise ratio (SNR) of projected images. We then used these data and a theoretical formula to evaluate noise in reconstructed images. Second, reconstructed images of a bar pattern phantom were obtained as a way of evaluating the spatial resolution. Then, reconstructed images of a skull phantom were obtained. RESULTS The SNR of the developed system was 1.6 times as high as that of a system with an image intensifier detector of equal detector pitch. The system was capable of resolving a 0.35 mm pattern and its field of view almost completely encompassed that of an image intensifier detector which is used in dentomaxillofacial imaging. The fine spatial resolution of the detector led to images in which the structural details of a skull phantom were clearly visible. CONCLUSIONS The system's isotropically fine resolution will lead to improved precision in dental diagnosis and surgery. The next stage of our research will be the development of a flat panel detector system with a high frame acquisition rate.
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Affiliation(s)
- R Baba
- Central Research Laboratory, Hitachi, Ltd., Tokyo, Japan.
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Baba R, Paramesh K, Zwaal JW. Protective ventilation of patients with acute respiratory distress syndrome. Br J Anaesth 2004; 93:153; author reply 153. [PMID: 15192007 DOI: 10.1093/bja/aeh573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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