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Tanaka T, Takahashi K, Inoue Y, Endo N, Shimoda E, Ueno K, Ichiyanagi T, Ohta T, Ishihara A. Inhibition of melanoma cell proliferation by strobilurins isolated from mushrooms and their synthetic analogues. Biosci Biotechnol Biochem 2024; 88:389-398. [PMID: 38271595 DOI: 10.1093/bbb/zbae006] [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: 11/14/2023] [Accepted: 01/12/2024] [Indexed: 01/27/2024]
Abstract
Strobilurins A and X, isolated from Mucidula venosolamellata culture extracts, demonstrated potent inhibition of human melanoma G-361 cell proliferation. Strobilurin X exhibited milder inhibitory effects on human fibroblast cells (NB1RGB) compared to strobilurin A. Additional strobilurin-related compounds were isolated from the other mushroom species. Oudemansins A and B displayed weaker activities on G-361 cells than strobilurins A and B, respectively, emphasizing the importance of a conjugated double-bond structure. Among isolated compounds, strobilurin G showed the lowest IC50 value for G-361 cells. Additional strobilurins bearing various substituents on the benzene ring were synthesized. Synthetic intermediates lacking the methyl β-methoxyacrylate group and a strobilurin analogue bearing modified β-methoxyacrylate moiety showed almost no inhibitory activity against G-361 cells. The introduction of long or bulky substituents at the 4' position of the benzene ring of strobilurins enhanced the activity and selectivity, suggesting differential recognition of the benzene ring by G-361 and NB1RGB cells.
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Affiliation(s)
- Tomoya Tanaka
- Graduate School of Sustainability Sciences, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Yuki Inoue
- Department of Agricultural, Life, and Environmental Sciences, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Naoki Endo
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Emiko Shimoda
- Department of Agricultural, Life, and Environmental Sciences, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Kotomi Ueno
- Department of Agricultural, Life, and Environmental Sciences, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Tsuyoshi Ichiyanagi
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Agricultural, Life, and Environmental Sciences, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Toshio Ohta
- Joint Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori, Japan
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Atsushi Ishihara
- Fungus/Mushroom Resource and Research Center, Faculty of Agriculture, Tottori University, Tottori, Japan
- Department of Agricultural, Life, and Environmental Sciences, Faculty of Agriculture, Tottori University, Tottori, Japan
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Nakagawa M, Takahashi K, Nishizawa Y, Ohta T. Involvement of interaction of Cav3.2 and nociceptive TRPA1 in pathological pain transmission. Biomed Res 2024; 45:45-55. [PMID: 38325845 DOI: 10.2220/biomedres.45.45] [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: 02/09/2024]
Abstract
T-type Ca2+ channels and TRPA1 expressed in sensory neurons are involved in pain. We previously demonstrated a functional interaction of these channels under physiological conditions. Here we investigated the possible involvement of these channels in inflammatory pain condition. We also evaluated the relationship of these channels endogenously expressed in RIN-14B, a rat pancreatic islet tumor cell line. In dorsal root ganglion (DRG) neurons innervated inflammatory side, [Ca2+]i increases induced by 15 mM KCl (15K) were enhanced in neurons responded to AITC. This enhancement was not observed in genetically TRPA1-deficient neurons. The T-type and AITC-induced currents were larger in neurons of the inflammatory side than in those of the control one. In DRGs of the inflammatory side, the protein expression of Cav3.2, but not TRPA1, was increased. In RIN-14B, 15K-induced [Ca2+]i increases were decreased by blockers of T-type Ca2+ channel and TRPA1, and by TRPA1-silencing. Immunoprecipitation suggested the coexistent of these channels in sensory neurons and RIN-14B. In mice with inflammation, mechanical hypersensitivity was suppressed by blockers of both channels. These data suggest that the interaction of Cav3.2 with TRPA1 in sensory neurons is enhanced via the augmentation of the activities of both channels under inflammatory conditions, indicating that both channels are therapeutic targets for inflammatory pain.
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Affiliation(s)
- Minami Nakagawa
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - Yuki Nishizawa
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
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Saigo Y, Sasase T, Tohma M, Uno K, Shinozaki Y, Maekawa T, Sano R, Miyajima K, Ohta T. High-cholesterol diet in combination with hydroxypropyl-beta-cyclodextrin induces NASH-like disorders in the liver of rats. Physiol Res 2023; 72:371-382. [PMID: 37449749 PMCID: PMC10668992 DOI: 10.33549/physiolres.934981] [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: 10/03/2022] [Accepted: 02/22/2023] [Indexed: 08/26/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a general term for fatty liver disease not caused by viruses or alcohol. Fibrotic hepatitis, cirrhosis, and hepatocellular carcinoma can develop. The recent increase in NAFLD incidence worldwide has stimulated drug development efforts. However, there is still no approved treatment. This may be due in part to the fact that non-alcoholic steatohepatitis (NASH) pathogenesis is very complex, and its mechanisms are not well understood. Studies with animals are very important for understanding the pathogenesis. Due to the close association between the establishment of human NASH pathology and metabolic syndrome, several animal models have been reported, especially in the context of overnutrition. In this study, we investigated the induction of NASH-like pathology by enhancing cholesterol absorption through treatment with hydroxypropyl-beta-cyclodextrin (CDX). Female Sprague-Dawley rats were fed a normal diet with normal water (control group); a high-fat (60 kcal%), cholesterol (1.25 %), and cholic acid (0.5 %) diet with normal water (HFCC group); or HFCC diet with 2 % CDX water (HFCC+CDX group) for 16 weeks. Compared to the control group, the HFCC and HFCC+CDX groups showed increased blood levels of total cholesterol, aspartate aminotransferase, and alanine aminotransferase. At autopsy, parameters related to hepatic lipid synthesis, oxidative stress, inflammation, and fibrosis were elevated, suggesting the development of NAFLD/NASH. Elevated levels of endoplasmic reticulum stress-related genes were evident in the HFCC+CDX group. In the novel rat model, excessive cholesterol intake and accelerated absorption contributed to NAFLD/NASH pathogenesis.
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Affiliation(s)
- Y Saigo
- Biological/Pharmacological Research Laboratories, Takatsuki Research Center, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Takatsuki, Osaka, Japan.
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Hashimoto M, Takahashi K, Ohta T. Inhibitory effects of linalool, an essential oil component of lavender, on nociceptive TRPA1 and voltage-gated Ca 2+ channels in mouse sensory neurons. Biochem Biophys Rep 2023; 34:101468. [PMID: 37102121 PMCID: PMC10123348 DOI: 10.1016/j.bbrep.2023.101468] [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: 12/25/2022] [Revised: 03/14/2023] [Accepted: 04/05/2023] [Indexed: 04/28/2023] Open
Abstract
Linalool, an essential oil component of lavender is commonly used in fragrances. It is known that linalool has anxiolytic, sedative, and analgesic actions. However, the mechanism of its analgesic action has not yet been fully clarified. Pain signals elicited by the activation of nociceptors on peripheral neurons are transmitted to the central nervous system. In the present study, we investigated the effects of linalool on transient receptor potential (TRP) channels and voltage-gated channels, both of which are important for pain signaling via nociceptors in somatosensory neurons. For detection of channel activity, the intracellular Ca2+ concentration ([Ca2+]i) was measured using a Ca2+-imaging system, and membrane currents were recorded using the whole-cell patch-clamp technique. Analgesic actions were also examined in vivo. In mouse sensory neurons linalool at concentrations that did not induce [Ca2+]i increases did not affect [Ca2+]i responses to capsaicin and acids, TRPV1 agonists, but suppressed those induced by allyl isothiocyanate (AITC) and carvacrol, TRPA1 agonists. Similar inhibitory effects of linalool were observed in cells that heterologously expressed TRPA1. Linalool attenuated the [Ca2+]i increases induced by KCl and voltage-gated Ca2+ currents but only slightly suppressed voltage-gated Na+currents in mouse sensory neurons. Linalool diminished TRPA1-mediated nociceptive behaviors. The present data suggest that linalool exerts an analgesic action via the suppression of nociceptive TRPA1 and voltage-gated Ca2+ channels.
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Affiliation(s)
- Miho Hashimoto
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
- Corresponding author. Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, 680-8553, Japan.
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Pimpjong K, Matsuyama H, Mizutani T, Tanahashi Y, Ohta T, Unno T. Possible role of transient receptor potential melastatin 4 channels in adrenergic contractions in mouse prostate smooth muscles. J Vet Med Sci 2023:23-0112. [PMID: 37225446 PMCID: PMC10372249 DOI: 10.1292/jvms.23-0112] [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: 05/26/2023] Open
Abstract
Transient receptor potential melastatin 4 (TRPM4) cation channels are expressed in prostate glands. However, the precise role of these channels in prostate contractility remains unclear. In this study, we examined whether TRPM4 channels were involved in adrenergic contractions in the mouse prostate gland. Adrenergic contractile responses elicited by noradrenaline or electrical field stimulation of the sympathetic nerve were isometrically recorded, and the effects of 9-phenanthrol, a specific TRPM4 channel inhibitor, on those contractile responses were investigated in mouse ventral prostate preparations. 9-phenanthrol (10 or 30 μM) inhibited noradrenaline- and sympathetic nerve-evoked contractions in a concentration-dependent manner. A similar inhibitory effect was observed with another TRPM4 channel inhibitor, 4-chloro-2-(2-(naphthalene-1-yloxy) acetamido) benzoic acid (NBA; 10 μM). Inhibition by 9-phenanthrol and NBA were much greater at lower noradrenaline concentrations and lower stimulus frequencies than those of higher concentrations or frequencies. However, 9-phenanthrol did not inhibit the noradrenaline-induced contractile response when the membrane potential was decreased to approximately 0 mV in the 140 mM K+ medium. Moreover, 9-phenanthrol does not affect noradrenaline-induced increases in spontaneous contractions of cardiac atrial preparation. This agent inhibited noradrenaline-induced contractions in the posterior aorta preparation. However, the inhibitory effect was significantly weaker than that observed in the prostate gland. These results suggest that TRPM4 channels are involved in adrenergic contractions in the mouse prostate gland, possibly by opening through membrane depolarization; therefore, they might be potential candidates for treating benign prostatic hyperplasia.
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Affiliation(s)
- Kiattisak Pimpjong
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Science, Gifu University
| | - Hayato Matsuyama
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Science, Gifu University
- Laboratory of Veterinary Pharmacology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University
| | - Taichi Mizutani
- Laboratory of Veterinary Pharmacology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University
| | - Yasuyuki Tanahashi
- Department of Frontier Life Sciences, Faculty of Life Sciences, Kyoto Sangyo University
| | - Toshio Ohta
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Science, Tottori University
| | - Toshihiro Unno
- Department of Basic Veterinary Science, Joint Graduate School of Veterinary Science, Gifu University
- Laboratory of Veterinary Pharmacology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University
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Kasai R, Toriyabe K, Goto T, Hatano M, Kondo Y, Ohta T, Suyama M, Goto T, Koide W, Maki K, Ushijima K, Ban K. A case of breast milk-acquired cytomegalovirus infection in an extremely low birth weight infant. J Neonatal Perinatal Med 2023:NPM221130. [PMID: 37182845 DOI: 10.3233/npm-221130] [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: 05/16/2023]
Abstract
INTRODUCTION Although breast milk is considered the optimal nutrition for infants, it is also the primary cause of postnatal cytomegalovirus (CMV) infection. Preterm infants with postnatal CMV infections are susceptible to a variety of life-threatening conditions. CASE SUMMARY Twin male infants were delivered via emergency caesarian section at 27 weeks' gestation secondary to maternal complete uterine rupture. The Apgar scores at 1 and 5 min were 1 and 1 for the older twin (Twin A) and 0 and 3 for the younger twin (Twin B). Their birth weights were 1203 g (+ 0.65SD) and 495 g (- 3.79SD) respectively. On day 41, laboratory blood test results for Twin B showed a moderate elevation in C-reactive protein (CRP), thrombocytopenia. CMV quantitative polymerase chain reaction (qPCR) tests in Twin B's urine and blood as well as in the mother's breast milk were positive, but stored, dried umbilical cord CMV qPCR tests were negative. Twin B was diagnosed with a postnatal CMV infection secondary to infected breast milk and ganciclovir was commenced on day 52. Treatment was switched to valganciclovir at 74 days of age, but a negative CMV-DNA level in the blood was not achieved. Postnatal CMV infection in this infant led to an exacerbation of pre-existing bronchopulmonary dysplasia (BPD) and he demised at 182 days of age. CONCLUSION Postnatal cytomegalovirus infections may lead to exacerbations of BPD. Early use of raw breast milk in preterm infants should be done with careful consideration of this potential complication.
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Affiliation(s)
- R Kasai
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - K Toriyabe
- Department of Obstetrics and Gynecology, Mie University Graduate School of Medicine, Japan
| | - T Goto
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - M Hatano
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - Y Kondo
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - T Ohta
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - M Suyama
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - T Goto
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - W Koide
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - K Maki
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - K Ushijima
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
| | - K Ban
- Department of Pediatrics, Yokkaichi Municipal Hospital, Shibata, Yokkaichi, Japan
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Shinozaki Y, Fukui K, Maekawa M, Toyoda K, Yoshiuchi H, Inagaki K, Uno K, Miyajima K, Ohta T. Unilateral nephrectomized SHR/NDmcr-cp rat shows a progressive decline of glomerular filtration with tubular interstitial lesions. Physiol Res 2023; 72:209-220. [PMID: 37159855] [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: 05/11/2023] Open
Abstract
In patients with diabetic kidney disease (DKD), the estimated glomerular filtration rate (eGFR) or creatinine clearance rate (Ccr) is always used as an index of decline in renal function. However, there are few animal models of DKD that could be used to evaluate renal function based on GFR or Ccr. For this reason, it is desirable to develop animal models to assess renal function, which could also be used for the evaluation of novel therapeutic agents for DKD. Therefore, we aimed to develop such animal model of DKD by using spontaneously hypertensive rat (SHR)/NDmcr-cp (cp/cp) rats with the characteristics of obese type 2 diabetes and metabolic syndrome. As a result, we have found that unilateral nephrectomy (UNx) caused a chronic Ccr decline, development of glomerular sclerosis, tubular lesions, and tubulointerstitial fibrosis, accompanied by renal anemia. Moreover, losartan-mixed diet suppressed the Ccr decline in UNx-performed SHR/NDmcr-cp rats (UNx-SHR/cp rats), with improvement in renal anemia and histopathological changes. These results suggest that UNx-SHR/cp rats could be used as a DKD model for evaluating the efficacy of therapeutic agents based on suppression of renal function decline.
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Affiliation(s)
- Y Shinozaki
- Laboratory of Animal Physiology and Functional Anatomy, Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
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Yoshimura A, Saito S, Saito C, Takahashi K, Tominaga M, Ohta T. Functional analysis of thermo-sensitive TRPV1 in an aquatic vertebrate, masu salmon (Oncorhynchus masou ishikawae). Biochem Biophys Rep 2022; 31:101315. [PMID: 35898728 PMCID: PMC9309644 DOI: 10.1016/j.bbrep.2022.101315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/03/2022] [Accepted: 07/14/2022] [Indexed: 11/25/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is mainly expressed in nociceptive primary sensory neurons and acts as a sensor for heat and capsaicin. The functional properties of TRPV1 have been reported to vary among species and, in some cases, the species difference in its thermal sensitivity is likely to be associated with thermal habitat conditions. To clarify the functional properties and physiological roles of TRPV1 in aquatic vertebrates, we examined the temperature and chemical sensitivities of TRPV1 in masu salmon (Oncorhynchus masou ishikawae, Om) belonging to a family of salmonids that generally prefer cool environments. First, behavioral experiments were conducted using a video tracking system. Application of capsaicin, a TRPV1 agonist, induced locomotor activities in juvenile Om. Increasing the ambient temperature also elicited locomotor activity potentiated by capsaicin. RT-PCR revealed TRPV1 expression in gills as well as spinal cord. Next, electrophysiological analyses of OmTRPV1 were performed using a two-electrode voltage-clamp technique with a Xenopus oocyte expression system. Heat stimulation evoked an inward current in heterologously expressed OmTRPV1. In addition, capsaicin produced current responses in OmTRPV1-expressing oocytes, but higher concentrations were needed for its activation compared to the mammalian orthologues. These results indicate that Om senses environmental stimuli (heat and capsaicin) through the activation of TRPV1, and this channel may play important roles in avoiding environments disadvantageous for survival in aquatic vertebrates. Capsaicin evoked behavioral responses of Oncorhynchus masou ishikawae (Om). The behavioral response to heat was potentiated by capsaicin. Heterologously expressed OmTRPV1 was activated by heat and capsaicin.
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Affiliation(s)
- A. Yoshimura
- Department of Veterinary Pharmacology, Tottori University, Tottori, Japan
| | - S. Saito
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute of Natural Sciences, Aichi, Japan
- Corresponding author. Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.
| | - C.T. Saito
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute of Natural Sciences, Aichi, Japan
| | - K. Takahashi
- Department of Veterinary Pharmacology, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - M. Tominaga
- Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute of Natural Sciences, Aichi, Japan
| | - T. Ohta
- Department of Veterinary Pharmacology, Tottori University, Tottori, Japan
- Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
- Corresponding author. Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, 680-8553, Japan.
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Sawada K, Nitta H, Nakamura Y, Okamoto W, Taniguchi H, Komatsu Y, Hara H, Kato T, Nishina T, Ohta T, Esaki T, Yoshino T, Fujii S. 1705P HER2 intratumoral genetic and non-genetic heterogeneity in metastatic colorectal cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Boku S, Satake H, Ohta T, Mitani S, Kawakami K, Matsumoto T, Yamazaki E, Hasegawa H, Ikoma T, Uemura M, Yamaguchi T, Ishizuka Y, Kurokawa Y, Sakai D, Kawakami H, Shimokawa T, Tsujinaka T, Kato T, Satoh T, Kagawa Y. 440TiP TRESBIEN (OGSG 2101): Encorafenib, binimetinib and cetuximab for early relapse stage II/III BRAF V600E-mutated CRC. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.578] [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: 11/16/2022] Open
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Yamazaki K, Satake H, Takashima A, Mizusawa J, Kataoka T, Fukuda H, Ishizuka Y, Suwa Y, Numata K, Shibata N, Asayama M, Yokota M, Tsushima T, Ohta T, Yamaguchi T, Hamaguchi T, Kanemitsu Y. 446TiP Randomized phase III study of bi-weekly trifluridine/tipiracil (FTD/TPI) plus bevacizumab (BEV) vs. FTD/TPI for chemorefractory metastatic colorectal cancer (mCRC): ROBiTS/JCOG2014. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Saito S, Saito CT, Igawa T, Takeda N, Komaki S, Ohta T, Tominaga M. Evolutionary tuning of TRPA1 underlies the variation in heat avoidance behaviors among frog species inhabiting diverse thermal niches. Mol Biol Evol 2022; 39:6673246. [PMID: 35994363 PMCID: PMC9447854 DOI: 10.1093/molbev/msac180] [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] [Indexed: 11/14/2022] Open
Abstract
Environmental temperature is a critical factor for all forms of life, and thermal tolerance defines the habitats utilized by a species. Moreover, the evolutionary tuning of thermal perception can also play a key role in habitat selection. Yet, the relative importance of thermal tolerance and perception in environmental adaptation remains poorly understood. Thermal conditions experienced by anuran tadpoles differ among species due to the variation in breeding seasons and water environments selected by parental frogs. In the present study, heat tolerance and avoidance temperatures were compared in tadpoles from five anuran species that spatially and temporally inhabit different thermal niches. These two parameters were positively correlated with each other and were consistent with the thermal conditions of habitats. The species difference in avoidance temperature was 2.6 times larger than that in heat tolerance, suggesting the importance of heat avoidance responses in habitat selection. In addition, the avoidance temperature increased after warm acclimation, especially in the species frequently exposed to heat in their habitats. Characterization of the heat-sensing transient receptor potential ankyrin 1 (TRPA1) ion channel revealed an amphibian-specific alternatively spliced variant containing a single valine insertion relative to the canonical alternative spliced variant of TRPA1, and this novel variant altered the response to thermal stimuli. The two alternatively spliced variants of TRPA1 exhibited different thermal responses in a species-specific manner, which are likely to be associated with a difference in avoidance temperatures among species. Together, our findings suggest that the functional change in TRPA1 plays a crucial role in thermal adaptation processes.
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Affiliation(s)
- Shigeru Saito
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.,Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.,Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi, 444-8787, Japan
| | - Claire T Saito
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.,Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan
| | - Takeshi Igawa
- Amphibian Research Center, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8511, Japan
| | - Nodoka Takeda
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, 680-8553, Japan
| | - Shohei Komaki
- Division of Biomedical Information Analysis, Iwate Tohoku Medical Megabank Organization, Disaster Reconstruction Center, Iwate Medical University, Yahaba, Iwate, 028-3609, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, 680-8553, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.,Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi, 444-8787, Japan.,Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi, 444-8787, Japan
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Kagawa Y, Kotani D, Bando H, Takahashi N, Horita Y, Kanazawa A, Kato T, Ando K, Satake H, Shinozaki E, Sunakawa Y, Takashima A, Yamazaki K, Yuki S, Nakajima H, Nakamura Y, Wakabayashi M, Taniguchi H, Ohta T, Yoshino T. PD-13 Plasma RAS dynamics and efficacy of anti-EGFR rechallenge in patients with RAS/BRAF wild-type metastatic colorectal cancer: REMARRY and PURSUIT trials. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.091] [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: 11/28/2022] Open
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14
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Maekawa M, Maekawa T, Sasase T, Takagi K, Takeuchi S, Kitamoto M, Nakagawa T, Toyoda K, Konishi N, Ohta T, Yamada T. Pathophysiological Analysis of Uninephrectomized db/db Mice as a Model of Severe Diabetic Kidney Disease. Physiol Res 2022; 71:209-217. [DOI: 10.33549/physiolres.934784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Diabetic nephropathy, included in diabetic kidney disease (DKD), is the primary disease leading to end-stage renal disease (ESRD) or dialysis treatment, accounting for more than 40% of all patients with ESRD or receiving dialysis. Developing new therapeutics to prevent the transition to ESRD or dialysis treatment requires an understanding of the pathophysiology of DKD and an appropriate animal model for drug efficacy studies. In this study, we investigated the pathophysiology of diabetic kidney disease with type 2 diabetes in uninephrectomized db/db mice. In addition, the nephrectomized db/db mice from 10 weeks to 42 weeks were used to assess the efficacy of long-term administration of the angiotensin-II–receptor antagonist losartan. The blood and urinary biochemical parameters and the blood pressure which is a main pharmacological endpoint of the losartan therapy, were periodically measured. And at the end, histopathological analysis was performed. Uninephrectomized db/db mice clearly developed obesity and hyperglycemia from young age. Furthermore, they showed renal pathophysiological changes, such as increased urinary albumin-creatinine ratio (UACR) (the peak value 3104±986 in 40-week-old mice), glomerular hypertrophy and increased fibrotic areas in the tubulointerstitial tubules. The blood pressure in the losartan group was significantly low compared to the normotensive Vehicle group. However, as expected, Losartan suppressed the increase in UACR (829±500) indicating the medication was sufficient, but the histopathological abnormalities including tubular interstitial fibrosis did not improve. These results suggest that the uninephrectomized db/db mice are useful as an animal model of the severe DKD indicated by the comparison of the efficacy of losartan in this model with the efficacy of losartan in clinical practice.
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Affiliation(s)
| | - T Maekawa
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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15
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Oka Y, Takahashi K, Ohta T. The effects of vanilloid analogues structurally related to capsaicin on the transient receptor potential vanilloid 1 channel. Biochem Biophys Rep 2022; 30:101243. [PMID: 35280525 PMCID: PMC8914335 DOI: 10.1016/j.bbrep.2022.101243] [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: 11/26/2021] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022] Open
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is known as a receptor of capsaicin, a spicy ingredient of chili peppers. It is also sensitive to a variety of pungent compounds and is involved in nociception. Here, we focused on the structural characteristics of capsaicin, and investigated whether vanillylmanderic acid (VMA), vanillic acid (VAcid), vanillyl alcohol (VAlc), vanillyl butyl ether (VBE), and vanillin, containing a vanillyl skeleton similar to capsaicin, affected the TRPV1 activities. For detection of TRPV1 activity, intracellular Ca2+ concentration ([Ca2+]i) was measured in HEK 293 cells heterologously expressing mouse TRPV1 (mTRPV1-HEK) and in mouse sensory neurons. Except for vanillin, four vanilloid analogues dose-dependently increased [Ca2+]i in mTRPV1-HEK. The solutions that dissolved VMA, VAcid and vanillin at high concentrations were acidic, whereas those of VAlc and VBE were neutral. Neutralized VAcid evoked [Ca2+]i increases but neutralized VMA did not. Mutation of capsaicin-sensing sites diminished [Ca2+]i responses to VAcid, VAlc and VBE. VAcid, VMA, and vanillin suppressed the activation of TRPV1 induced by capsaicin. VAcid and VMA also inhibited the acid-induced TRPV1 activation. In sensory neurons, VMA diminished TRPV1 activation by capsaicin or acids. The present data indicate that these structural characteristics of chemical compounds on TRPV1 may provide strategies for the development of novel analgesic drugs targeting nociceptive TRPV1.
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Key Words
- Catecholamine metabolites
- DMSO, Dimethyl sulfoxide
- DRG, Dorsal root ganglion
- HEK, Human embryonic kidney
- Heterologous expression
- Intracellular Ca2+ concentration
- Mutagenesis
- Sensory neurons
- TRPV, Transient receptor potential vanilloid 1
- VAcid, Vanillic acid
- VBE, Vanillyl butyl ether
- VMA, Vanillylmandelic acid
- Valc, Vanillyl alcohol
- Vanillyl structure
- [Ca2+], Intracellular Ca2+ concentration
- mTRPV1, Mouse TRPV1
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Affiliation(s)
- Y Oka
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - K Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.,Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - T Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.,Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
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16
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Tsujimoto K, Kuriya N, Ohta T, Homma K, Im M. Quantifying the GCM-related uncertainty for climate change impact assessment of rainfed rice production in Cambodia by a combined hydrologic - rice growth model. Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2021.109815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Kamikawa N, Ohta T, Kurogi S, Matsushita Y. Detection of ranunculus mild mosaic virus in weed species in Japan. Lett Appl Microbiol 2021; 74:84-91. [PMID: 34637547 DOI: 10.1111/lam.13585] [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: 06/11/2021] [Revised: 09/27/2021] [Accepted: 09/30/2021] [Indexed: 11/26/2022]
Abstract
Ranunculus (Ranunculus asiaticus L.) is one of the most popular cut flowers in Japan. However, the infection rate of ranunculus mild mosaic virus (RanMMV) in ranunculus plants has been gradually increasing during cultivation, suggesting that RanMMV may be transmitted from weeds to ranunculus plants in cultivation fields. In our survey, RanMMV in R. japonicus, R. tachiroei, R. cantoniensis, Geranium carolinianum, Vicia sativa, V. tetrasperma and V. hirsute in ranunculus fields and noncultivation regions in Japan was detected. Ranunculaceae weeds grow all year in cultivation fields, unlike R. asiaticus, indicating that these weeds may be a source of RanMMV infection. In addition, a pairwise comparison of CP genes between RanMMV isolates taken from R. asiaticus, R. japonicus, and R. tachiroei showed high nucleotide (98·1-100%) and amino acid (98·5-100%) identities. These results support the hypothesis that RanMMV may be transmitted between Ranunculaceae weeds and R. asiaticus plants. Thus, virus control should focus on removing host weeds from the cultivation fields.
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Affiliation(s)
- N Kamikawa
- Miyazaki Prefecture Koyu Agricultural Community Development Bureau, Takanabe, Miyazaki, Japan
| | - T Ohta
- Miyazaki Prefecture Koyu Agricultural Community Development Bureau, Takanabe, Miyazaki, Japan
| | - S Kurogi
- Miyazaki Agricultural Research Institute, Miyazaki, Miyazaki, Japan
| | - Y Matsushita
- Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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18
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Ozaki S, Kaji S, Nawa K, Imae T, Aoki A, Nakamoto T, Ohta T, Nozawa Y, Haga A, Nakagawa K. PD-0755 Training modality conversion models with small data and its application to MVCT to kVCT conversion. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07034-1] [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: 10/20/2022]
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19
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Oguma N, Takahashi K, Okabe S, Ohta T. Inhibitory effect of polysulfide, an endogenous sulfur compound, on oxidative stress-induced TRPA1 activation. Neurosci Lett 2021; 757:135982. [PMID: 34023406 DOI: 10.1016/j.neulet.2021.135982] [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: 02/17/2021] [Revised: 04/29/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022]
Abstract
Polysulfide (PS), an endogenous sulfur compound, generated by oxidation of hydrogen sulfide, has a stimulatory action on the nociceptive TRPA1 channel. TRPA1 is also activated by reactive oxygen species such as hydrogen peroxide (H2O2) produced during inflammation. Here, we examined the effect of PS on H2O2-induced responses in native and heterologously expressed TRPA1 using a cell-based calcium assay. We also carried out behavioral experiments in vivo. In mouse sensory neurons, H2O2 elicited early TRPA1-dependent and late TRPA1-independent increases of [Ca2+]i. The former was suppressed by the pretreatment with PS. In cells heterologously expressed TRPA1, PS suppressed [Ca2+]i responses to H2O2. Simultaneous measurement of [Ca2+]i and the intracellular PS level revealed that scavenging effect of PS was not related to the inhibitory effect. Removal of extracellular Ca2+, a calmodulin inhibitor and dithiothreitol attenuated the inhibitory effect of PS. Pretreatment with PS diminished nociceptive behaviors induced by H2O2. The present data suggest that PS suppresses oxidative stress-induced TRPA1 activation due to cysteine modification and Ca2+/calmodulin signaling. Thus, endogenous sulfurs may have regulatory roles in nociception via functional changes in TRPA1 under inflammatory conditions.
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Affiliation(s)
- N Oguma
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - K Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan; Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan
| | - S Okabe
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - T Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan; Joint Graduate School of Veterinary Sciences, Gifu University, Tottori University, Tottori, Japan.
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20
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Sano R, Ishii Y, Yamanaka M, Yasui Y, Kemmochi Y, Kuroki F, Sugimoto M, Fukuda S, Sasase T, Miyajima K, Nakae D, Ohta T. Glomerular hyperfiltration with hyperglycemia in the spontaneously diabetic Torii (SDT) fatty rat, an obese type 2 diabetic model. Physiol Res 2021; 70:45-54. [PMID: 33453716 DOI: 10.33549/physiolres.934533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Glomerular hyperfiltration is observed in an early stage of kidney diseases including diabetic nephropathy. A better understanding of pathophysiological changes in glomerular hyperfiltration is essential for development of new therapies to prevent kidney disease progression. In this study, we investigated glomerular changes including glomerular filtration rate (GFR) and glomerular size in the Spontaneously Diabetic Torii (SDT) fatty rat, an obese type 2 diabetic model, and we also evaluated pharmacological effects of the sodium glucose cotransporter 2 inhibitor dapagliflozin on the renal lesions. Dapagliflozin was administered to SDT fatty rats from 5 to 17 weeks of age. Blood and urinary biochemical parameters were periodically measured. GFR was determined by transdermal GFR monitor at 16 weeks of age and histopathological analysis was performed at 17 weeks of age. SDT fatty rat developed severe hyperglycemia and exhibited pathophysiological abnormalities in the kidney, such as an increased GFR, glomerular hypertrophy and tissue lesions. Dapagliflozin achieved good glycemic control during the experimental period, inhibited the increase in GFR, and improved histopathological abnormalities in tubules. These results suggest that the SDT fatty rat is a useful model for analyzing the pathogenesis of diabetic nephropathy during its early stage and dapagliflozin improves not only hyperglycemia but also glomerular hyperfiltration and tubule lesions in SDT fatty rat.
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Affiliation(s)
- R Sano
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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21
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Ohta T, Fujiwara M, Hotta T, Ide I, Ishizaki K, Kohri H, Yanai Y, Yosoi M. Monitoring the build-up of hydrogen polarization for polarized hydrogen-deuteride (HD) targets with nuclear magnetic resonance (NMR) at 17 T. Rev Sci Instrum 2020; 91:095104. [PMID: 33003818 DOI: 10.1063/5.0005696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
We report on the frozen-spin polarized hydrogen-deuteride (HD) targets for photoproduction experiments at SPring-8/LEPS. Pure HD gas with a small amount of ortho-H2 (∼0.1%) and a very small amount of para-D2 (∼0.001%) was liquefied and solidified by liquid helium. The temperature of the produced solid HD was reduced to about 30 mK with a dilution refrigerator. A magnetic field (17 T) was applied to the HD to grow the polarization with the static method. After the aging of the HD at low temperatures in the presence of a high-magnetic field strength for three months, the polarization froze. Almost all ortho-H2 molecules were converted to para-H2 molecules. Most remaining para-D2 molecules were converted to ortho-D2 molecules. The para-H2 and ortho-D2 molecules exhibited weak spin interactions with the HD. If the concentrations of the ortho-H2 and para-D2 were reduced appropriately at the beginning of the aging process, the aging time can be shortened. We have developed a new nuclear magnetic resonance (NMR) system to measure the relaxation times (T1) of the 1H and 2H nuclei with two frequency sweeps at the respective frequencies of 726 MHz and 111 MHz and succeeded in the monitoring of the polarization build-up at decreasing temperatures from 600 mK to 30 mK at 17 T. Automatic NMR measurements with the frequency sweeps enabled us to omit the use of a manual tuning circuit and to remove magnetic field sweeps with eddy current heat. This technique enables us to optimize the concentration of the ortho-H2 and to efficiently polarize the HD target within a shortened aging time.
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Affiliation(s)
- T Ohta
- Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - M Fujiwara
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Hotta
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - I Ide
- Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - K Ishizaki
- Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - H Kohri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Yanai
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Yosoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
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22
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Uzura R, Takahashi K, Saito S, Tominaga M, Ohta T. Reduction of extracellular sodium evokes nociceptive behaviors in the chicken via activation of TRPV1. Brain Res 2020; 1747:147052. [PMID: 32791143 DOI: 10.1016/j.brainres.2020.147052] [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: 06/04/2020] [Revised: 08/03/2020] [Accepted: 08/07/2020] [Indexed: 10/23/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1), a non-selective cation channel, is mainly expressed in nociceptive primary sensory neurons. Sensitivity of TRPV1 to several stimuli is known to vary among species, specifically, the avian orthologue is nearly insensitive to capsaicin. Extracellular sodium ions ([Na+]o) regulate TRPV1 activity in mammals, but their regulatory role on chicken TRPV1 (cTRPV1) is unknown. Here, we focused on the actions of capsaicin and low [Na+]o on cTRPV1 activity. In chicken dorsal root ganglion (cDRG) neurons, capsaicin elicited [Ca2+]i increases, but its effective concentration was much higher than those in mammals. Low [Na+]o evoked [Ca2+]i increases in cDRG neurons in a decreasing [Na+]o-dependent manner and the complete removal of [Na+]o (0Na) produced maximal effects. The population of 0Na-sensitive neurons was mostly overlapped with those of proton- and capsaicin-sensitive ones. Low [Na+]o synergistically potentiated the capsaicin- and proton-induced TRPV1 activation in cDRG neurons. In HEK293 cells expressing cTRPV1 (cTRPV1-HEK), capsaicin elicited [Ca2+]i increases with an EC50 of 11.8 µM, and low [Na+]o also did. Well-defined mammalian TRPV1 antagonists hardly suppressed cTRPV1 activation by low [Na+]o. 0Na evoked outwardly rectified currents in cTRPV1-HEK. Mutagenesis analyses revealed a possible interaction of [Na+]o with the proton-binding sites of cTRPV1. The administration of capsaicin and 0Na to chick eyes elicited pain-related behaviors. These results suggest that low [Na+]o is capable of activating cTRPV1 in vitro, resulting in pain in vivo. Our data demonstrate that characterization of the cTRPV1 function is important to understand activation mechanisms of TRPV1.
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Affiliation(s)
- R Uzura
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - K Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - S Saito
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institute of Natural Sciences, Aichi, Japan; Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute of Natural Sciences, Aichi, Japan
| | - M Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institute of Natural Sciences, Aichi, Japan; Thermal Biology Group, Exploratory Research Center on Life and Living Systems (ExCELLS), National Institute of Natural Sciences, Aichi, Japan
| | - T Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.
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23
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Nakajima H, Kotani D, Oki E, Kato T, Shinozaki E, Sunakawa Y, Bando H, Yamazaki K, Yuki S, Yoshino T, Yamanaka T, Ohta T, Taniguchi H, Kagawa Y. P-18 REMARRY and PURSUIT trials: Liquid biopsy-guided re-challenge of anti-EGFR monoclonal antibody for patients with RAS/BRAF V600E wild-type metastatic colorectal cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.100] [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] Open
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24
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Tomida N, Muramatsu N, Niiyama M, Ahn JK, Chang WC, Chen JY, Chu ML, Daté S, Gogami T, Goto H, Hamano H, Hashimoto T, He QH, Hicks K, Hiraiwa T, Honda Y, Hotta T, Ikuno H, Inoue Y, Ishikawa T, Jaegle I, Jo JM, Kasamatsu Y, Katsuragawa H, Kido S, Kon Y, Maruyama T, Masumoto S, Matsumura Y, Miyabe M, Mizutani K, Nagahiro H, Nakamura T, Nakano T, Nam T, Ngan TNT, Nozawa Y, Ohashi Y, Ohnishi H, Ohta T, Ozawa K, Rangacharyulu C, Ryu SY, Sada Y, Sasagawa M, Shibukawa T, Shimizu H, Shirai R, Shiraishi K, Strokovsky EA, Sugaya Y, Sumihama M, Suzuki S, Tanaka S, Tokiyasu A, Tsuchikawa Y, Ueda T, Yamazaki H, Yamazaki R, Yanai Y, Yorita T, Yoshida C, Yosoi M. Search for η^{'} Bound Nuclei in the ^{12}C(γ,p) Reaction with Simultaneous Detection of Decay Products. Phys Rev Lett 2020; 124:202501. [PMID: 32501086 DOI: 10.1103/physrevlett.124.202501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 02/11/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
We measured missing mass spectrum of the ^{12}C(γ,p) reaction for the first time in coincidence with potential decay products from η^{'} bound nuclei. We tagged an (η+p) pair associated with the η^{'}N→ηN process in a nucleus. After applying kinematical selections to reduce backgrounds, no signal events were observed in the bound-state region. An upper limit of the signal cross section in the opening angle cosθ_{lab}^{ηp}<-0.9 was obtained to be 2.2 nb/sr at the 90% confidence level. It is compared with theoretical cross sections, whose normalization ambiguity is suppressed by measuring a quasifree η^{'} production rate. Our results indicate a small branching fraction of the η^{'}N→ηN process and/or a shallow η^{'}-nucleus potential.
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Affiliation(s)
- N Tomida
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - N Muramatsu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Niiyama
- Department of Physics, Kyoto Sangyo University, Kyoto 603-8555, Japan
| | - J K Ahn
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - W C Chang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - J Y Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - M L Chu
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - S Daté
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Japan Synchrotron Radiation Research Institute (SPring-8), Sayo, Hyogo 679-5198, Japan
| | - T Gogami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Goto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Hamano
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Hashimoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Q H He
- Department of Nuclear Science & Engineering, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - K Hicks
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - T Hiraiwa
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - Y Honda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Hotta
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Ikuno
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Inoue
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Ishikawa
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - I Jaegle
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - J M Jo
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Y Kasamatsu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Katsuragawa
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S Kido
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Kon
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Institute for Radiation Sciences, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Maruyama
- College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 252-8510, Japan
| | - S Masumoto
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - Y Matsumura
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Miyabe
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - K Mizutani
- Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
| | - H Nagahiro
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Nara Women's University, Nara 630-8506, Japan
| | - T Nakamura
- Department of Education, Gifu University, Gifu 501-1193, Japan
| | - T Nakano
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Nam
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T N T Ngan
- Nuclear Physics Department, University of Science, Vietnam National University, Ho Chi Minh City 72711, Vietnam
| | - Y Nozawa
- Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Y Ohashi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Ohnishi
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Ohta
- Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - K Ozawa
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - C Rangacharyulu
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada
| | - S Y Ryu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Sada
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Sasagawa
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Shibukawa
- Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
| | - H Shimizu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - R Shirai
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - K Shiraishi
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - E A Strokovsky
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Laboratory of High Energy Physics, Joint Institute for Nuclear Research, Dubna, Moscow Region 142281, Russia
| | - Y Sugaya
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Sumihama
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Department of Education, Gifu University, Gifu 501-1193, Japan
| | - S Suzuki
- Japan Synchrotron Radiation Research Institute (SPring-8), Sayo, Hyogo 679-5198, Japan
| | - S Tanaka
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - A Tokiyasu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Tsuchikawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T Ueda
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - H Yamazaki
- Radiation Science Center, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki 319-1195, Japan
| | - R Yamazaki
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Yanai
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Yorita
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - C Yoshida
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - M Yosoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
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Ohta T, Saeki I. Comparisons of calcium sources between arboreal and ground‐dwelling land snails: implication from strontium isotope analyses. J Zool (1987) 2020. [DOI: 10.1111/jzo.12767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. Ohta
- The Research Institute for Humanity and Nature Kyoto Japan
- Environmental Biology and Chemistry Graduate School of Science and Engineering University of Toyama Toyama Japan
| | - I. Saeki
- Faculty of Life and Environmental Sciences University of Tsukuba Tsukuba Japan
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Koshino K, Yamaguchi N, Oshima T, Hiroe K, Ohta Y, Okada S, Ohta T, Tanabe K. P1354 Prognostic value of the left ventricular longitudinal and circumferential function in patients with takotsubo syndrome during the acute phase. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Takotsubo syndrome is generally considered a benign disease with a reversible condition; however, hemodynamic and electrical instability during the acute phase exposes patients to the risk of serious adverse in-hospital events. The purpose of this study was to investigate the prognostic value of the left ventricular longitudinal and circumferential function in patients with TTS during the acute phase.
Methods
We divided the 27 patients with TTS (77.4 ± 10.2 years old, 21 females) into two groups; the severe group (SG) of 9 patients (in-hospital death, mechanical assist devices such as IABP or ECMO, oozing rupture) and non-severe group (NSG) of 18 patients. The echocardiographic examination on admission, catheter hemodynamic assessment, and laboratory data, and ST-T change in electrocardiogram were compared between two groups.
Results
There were no differences in age, laboratory data, electrocardiogram findings between the two groups. The LVEF was lower in SG (35.3 ± 6.1% vs. 45.9 ± 13.5%, p = 0.03). The index of Ballooning, the ratio of the systolic left ventricular diameter of ballooning segments to that of basal segments, was higher in SG (2.07 ± 0.61% vs.1.60 ± 0.32%, p = 0.016). The circumferential fractional shortening (CFS) of ballooning segments was lower in SG (4.6 ± 3.2% vs. 18.2 ± 8.2%, p = 0.00007), CFS of basal segments was not different between the two groups, and the ratio of CFS of ballooning segments to CFS of basal segments (CFS imbalance index) was lower in SG (5.60 ± 3.84 vs. 10.83 ± 3.92, p = 0.00003). The left ventricular longitudinal fractional shortening was lower in SG (0.12 ± 0.09 vs. 0.46 ± 0.19, p = 0.00003). The absolute value of GLS was lower in SG (7.6 ± 4.3% vs. 13.0 ± 3.6%, p = 0.002). In all three cases of in-hospital death, the CFS imbalance index was lower than 0.14.
Conclusion
In patients with TTS, left ventricular longitudinal and circumferential function could be related to serious adverse in-hospital events.
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Affiliation(s)
- K Koshino
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - N Yamaguchi
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - T Oshima
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - K Hiroe
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - Y Ohta
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - S Okada
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - T Ohta
- Matsue City Hospital, Cardiology, Matsue, Japan
| | - K Tanabe
- Shimane University, Cardiology, Izumo, Japan
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Tanino H, Suzuki M, Kaise H, Miyashita M, Chishima T, Hayashi M, Miyoshi Y, Futamura M, Ohtani S, Nagahashi M, Ohta T, Kosaka Y, Ishikawa T, Hasegawa Y, Kubota T, Sangai T, Iwatani T, Yamada A, Akazawa K, Kohno N. Abstract OT1-05-04: Phase 3 trial of carboplatin in triple negative breast cancer (TNBC) patients with residual invasive carcinoma after neoadjuvant chemotherapy ( JONIE4:J-CAT trial). Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot1-05-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: It is well known that the prognosis of non pCR TNBC patients was poor after anthracycline and taxan treatment. For such patients, capecitabine seems to be effective to reduce recurrence based on the HR 0.58 of the CREATE X trial (Masuda, N. et al. Adjuvant Capecitabine for Breast Cancer after Preoperative Chemotherapy. N Engl J Med. 376, 2147. 2017) . However, the target of capecitabine is still unclear for TNBC. We classified non pCR tumors as BRCAness and Sporadic using BRCAness test(MRC-Holland, Amsterdam, the Netherlands). The recurrence rate of the BRCAness group was about 70%. Carboplatine is expected to be effective against BRCAness tumors, as it is a DNA damaging agent. In this study BRCAness can be checked just before carboplatin treatment using surgical specimens. Then the efficacy of carboplatin will be directly known to make comparison between DFS in the carboplatin group and that of the observation group.
Trial design: This is anopen label, randomized phase III study that will enroll TNBC with residual invasive cancer after surgery with preoperative chemotherapy including both anthracycrine and taxan. Patients are randomly assigned to either the carboplatin group or observation group. The patients in the carboplatin group are treated with carboplatin at AUC 6 and those in the observation group are observed at only 3 years.
Eligibility criteria:
1) ER and PgR<1%, HER2 0, 1+ or 2+ with FISH negative on core needle biopsy before the chemotherapy and surgical specimens.
2) Preoperative chemotherapy including both anthracycrine and taxan.
3) Residual invasive cancer on breast tumors or lymph node metastasis in surgical specimens.
4) 20-79 year old women.
5) No chemotherapy within 5 years.
6) Not bilateral breast cancer, without metastasis, no prior breast cancer.
7) No severe bone marrow suppression.
Specific aims:Primary objective is DFS (Disease Free Survival). Secondary objectives are overall survival and safety.
STATISTICAL METHODS:
The 3 years recurrence rate of the observation group was estimated as 40% and hazard ratio at 0.58 based on the CREATE X trial. For both groups, 135 patients are necessary. This study is powered to approximately 80% to test the superiority of carboplatin group at a 2-sided α=0.05 using a stratified log-rank test.
Activation Date:22ndMarch 2018. No patients had been enrolled till 3rd July.
Citation Format: Tanino H, Suzuki M, Kaise H, Miyashita M, Chishima T, Hayashi M, Miyoshi Y, Futamura M, Ohtani S, Nagahashi M, Ohta T, Kosaka Y, Ishikawa T, Hasegawa Y, Kubota T, Sangai T, Iwatani T, Yamada A, Akazawa K, Kohno N. Phase 3 trial of carboplatin in triple negative breast cancer (TNBC) patients with residual invasive carcinoma after neoadjuvant chemotherapy (JONIE4:J-CAT trial) [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT1-05-04.
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Affiliation(s)
- H Tanino
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - M Suzuki
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - H Kaise
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - M Miyashita
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Chishima
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - M Hayashi
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - Y Miyoshi
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - M Futamura
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - S Ohtani
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - M Nagahashi
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Ohta
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - Y Kosaka
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Ishikawa
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - Y Hasegawa
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Kubota
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Sangai
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - T Iwatani
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - A Yamada
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - K Akazawa
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
| | - N Kohno
- Kobe University, Kobe, Hyogo, Japan; National Hospital Organization Chiba Medical Center, Chiba City, Chiba, Japan; Tokyo Medical University Ibaraki Medical Center, Inashikigun, Ibaraki, Japan; Kohnan Hospital, Kobe, Hyogo, Japan; Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan; Dokkyo Medical University, Mibu, Tochigi, Japan; Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Gifu University, Gifu, Japan; Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Niigata University, Niigata, Japan; St. Marianna University School of Medicine, Kawasaki, Knagawa, Japan; Kitasato University, Sagamihara, Kanagawa, Japan; Tokyo Medical University, Shinjuku-ku, Tokyo, Japan; Hirosaki Municipal Hospital, Hirosaki, Aomori, Japan; Kobe Kaisei Hospital, Kobe, Hyogo, Japan; Chiba University Graduate School of Medicine, Chiba, Chiba, Japan; Chigasaki Municipal Hospital, Chigasaki, Kanagawa, Japan; Kamiiida Daiichi General Hospital, Nagoya City, Aichi, Japan
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Shimada T, Takahashi K, Tominaga M, Ohta T. Identification of molecular targets for toxic action by persulfate, an industrial sulfur compound. Neurotoxicology 2019; 72:29-37. [PMID: 30738091 DOI: 10.1016/j.neuro.2019.02.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/18/2019] [Accepted: 02/04/2019] [Indexed: 02/02/2023]
Abstract
Persulfate salts are broadly used as industrial chemicals and exposure to them causes occupational asthma, occupational rhinitis and contact dermatitis. However, the mechanisms underlying these toxic actions are not fully elucidated. Transient receptor potential (TRP) vanilloid 1 (V1), ankyrin 1 (A1) and melastatin 8 (M8) are non-selective cation channels preferentially expressing sensory neurons. These channels are known to be involved in respiratory and skin diseases. In the present study, we investigated the effects of sodium persulfate on these TRP channels. In wild-type mouse sensory neurons, persulfate evoked [Ca2+]i increases that were inhibited by removal of extracellular Ca2+ or blockers of TRPA1 but not by those of TRPV1 and TRPM8. Persulfate failed to evoke [Ca2+]i responses in neurons from TRPA1(-/-) mice, but did evoke them in neurons from TRPV1(-/-) mice. In HEK 293 cells expressing mouse TRPA1 (mTRPA1-HEK), persulfate induced [Ca2+]i increases. Moreover, in HEK 293 cells expressing mouse TRPV1 (mTRPV1-HEK), a high concentration of persulfate also evoked [Ca2+]i increases. Similar [Ca2+]i responses were observed in HEK 293 cells expressing human TRPA1 and human TRPV1. Current responses were also elicited by persulfate in mTRPA1- and mTRPV1-HEK. Analysis using mutated channels revealed that persulfate acted on electrophilic agonist-sensitive cysteine residues of TRPA1, and it indirectly activated TRPV1 due to the external acidification, because of the disappearance of [Ca2+]i responses in acid-insensitive mTRPV1 mutant. These results demonstrate that persulfate activates nociceptive TRPA1 and TRPV1 channels. It is suggested that activation of these nociceptive channels may be involved in respiratory and skin injuries caused by exposure to this industrial sulfur compound. Thus, selective TRPA1 and TRPV1 channel blockers may be effective to remedy persulfate-induced toxic actions.
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Affiliation(s)
- Takahisa Shimada
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.
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29
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Suzuki K, Yuki S, Nakano S, Kawamoto Y, Nakatsumi H, Hatanaka K, Ando T, Furukawa K, Ishiguro A, Ohta T, Eto K, Nakajima J, Nakamura M, Sogabe S, Kato K, Tateyama M, Kato S, Sekiguchi M, Sakata Y, Komatsu Y. HGCSG1503: A retrospective cohort study evaluating the safety and efficacy of TAS-102 in patients with metastatic colorectal cancer: Analysis of GERCOR index. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.016] [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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30
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Hatanaka K, Yuki S, Nakano S, Sawada K, Harada K, Okuda H, Ando T, Ogawa K, Furukawa K, Minami S, Saiki T, Ohta T, Kato T, Nakajima J, Sasaki T, Saitoh S, Shindo Y, Tateyama M, Kato S, Nagai H, Sakata Y, Komatsu Y. HGCSG1503: A retrospective cohort study evaluating the safety and efficacy of TAS-102 in patients with metastatic colorectal cancer: Analysis of GERCOR index. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.260] [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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31
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Fushida S, Okazaki M, Kinoshita J, Yamaguchi T, Ohta T. Impact of HIF-1alpha and PKM1 expression on acquisition of paclitaxel resistance in gastric cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.015] [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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32
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Kohri H, Shiu SH, Chang WC, Yanai Y, Ahn DS, Ahn JK, Chen JY, Daté S, Ejiri H, Fujimura H, Fujiwara M, Fukui S, Gohn W, Hicks K, Hosaka A, Hotta T, Hwang SH, Imai K, Ishikawa T, Joo K, Kato Y, Kon Y, Lee HS, Maeda Y, Mibe T, Miyabe M, Morino Y, Muramatsu N, Nakano T, Nakatsugawa Y, Nam SI, Niiyama M, Noumi H, Ohashi Y, Ohta T, Oka M, Parker JD, Rangacharyulu C, Ryu SY, Sawada T, Shimizu H, Strokovsky EA, Sugaya Y, Sumihama M, Tsunemi T, Uchida M, Ungaro M, Wang SY, Yosoi M. Differential Cross Section and Photon-Beam Asymmetry for the γ[over →]p → π^{-}Δ^{++}(1232) Reaction at Forward π^{-} Angles for E_{γ}=1.5-2.95 GeV. Phys Rev Lett 2018; 120:202004. [PMID: 29864366 DOI: 10.1103/physrevlett.120.202004] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/11/2018] [Indexed: 06/08/2023]
Abstract
Differential cross sections and photon-beam asymmetries for the γ[over →]p→π^{-}Δ^{++}(1232) reaction have been measured for 0.7<cosθ_{π}^{c.m.}<1 and E_{γ}=1.5-2.95 GeV at SPring-8/LEPS. The first-ever high statistics cross-section data are obtained in this kinematical region, and the asymmetry data for 1.5<E_{γ}(GeV)<2.8 are obtained for the first time. This reaction has a unique feature for studying the production mechanisms of a pure uu[over ¯] quark pair in the final state from the proton. Although there is no distinct peak structure in the cross sections, a non-negligible excess over the theoretical predictions is observed at E_{γ}=1.5-1.8 GeV. The asymmetries are found to be negative in most of the present kinematical regions, suggesting the dominance of π exchange in the t channel. The negative asymmetries at forward meson production angles are different from the asymmetries previously measured for the photoproduction reactions producing a dd[over ¯] or an ss[over ¯] quark pair in the final state. Advanced theoretical models introducing nucleon resonances and additional unnatural-parity exchanges are needed to reproduce the present data.
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Affiliation(s)
- H Kohri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - S H Shiu
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- Department of Physics, National Central University, Taoyuan City 32001, Taiwan
| | - W C Chang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - Y Yanai
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - D S Ahn
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J K Ahn
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - J Y Chen
- Light Source Division, National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - S Daté
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan
| | - H Ejiri
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H Fujimura
- Wakayama Medical College, Wakayama 641-8509, Japan
| | - M Fujiwara
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- National Institutes for Quantum and Radiological Science and Technology, Tokai, Ibaraki 319-1195, Japan
| | - S Fukui
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - W Gohn
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA
| | - K Hicks
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - A Hosaka
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Hotta
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S H Hwang
- Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea
| | - K Imai
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T Ishikawa
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - K Joo
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA
| | - Y Kato
- Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - Y Kon
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - H S Lee
- Rare Isotope Science Project, Institute for Basic Science, Daejeon 34047, Korea
| | - Y Maeda
- Proton Therapy Center, Fukui Prefectural Hospital, Fukui 910-8526, Japan
| | - T Mibe
- High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - M Miyabe
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - Y Morino
- High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - N Muramatsu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - T Nakano
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Nakatsugawa
- High Energy Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - S I Nam
- Department of Physics, Pukyong National University (PKNU), Busan 608-737, Republic of Korea
| | - M Niiyama
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Noumi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Y Ohashi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5143, Japan
| | - T Ohta
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Oka
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - J D Parker
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - C Rangacharyulu
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - S Y Ryu
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - T Sawada
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
- Physics Department, University of Michigan, Michigan 48109-1040, USA
| | - H Shimizu
- Research Center for Electron Photon Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
| | - E A Strokovsky
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
- Joint Institute for Nuclear Research, Dubna, Moscow Region 142281, Russia
| | - Y Sugaya
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - M Sumihama
- Department of Education, Gifu University, Gifu 501-1193, Japan
| | - T Tsunemi
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - M Uchida
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - M Ungaro
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA
| | - S Y Wang
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
| | - M Yosoi
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
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Toriniwa Y, Muramatsu M, Ishii Y, Riya E, Miyajima K, Ohshida S, Kitatani K, Takekoshi S, Matsui T, Kume S, Yamada T, Ohta T. Pathophysiological characteristics of non-alcoholic steatohepatitis-like changes in cholesterol-loaded type 2 diabetic rats. Physiol Res 2018; 67:601-612. [PMID: 29750881 DOI: 10.33549/physiolres.933784] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Spontaneously Diabetic Torii (SDT) fatty rats, a new obese diabetic model, reportedly presented with features of non-alcoholic steatohepatitis (NASH) after 32 weeks of age. We tried to accelerate the onset of NASH in SDT fatty rats using dietary cholesterol loading and noticed changes in the blood choline level which is expected to be a NASH biomarker. Body weight and biochemical parameters were measured from 8 to 24 weeks of age. At 16, 20, 24 weeks, pathophysiological analysis of the livers were performed. Hepatic lipids, lipid peroxides, and the expression of mRNA related to triglyceride (TG) synthesis, inflammation, and fibrosis were evaluated at 24 weeks. Hepatic fibrosis was observed in SDT fatty rats fed cholesterol-enriched diets (SDT fatty-Cho) from 16 weeks. Furthermore, hepatic lipids and lipid peroxide were significantly higher in SDT fatty-Cho than SDT fatty rats fed normal diets at 24 weeks. Hepatic mRNA expression related to TG secretion decreased in SDT fatty-Cho, and the mRNA expression related to inflammation and fibrosis increased in SDT fatty-Cho at 24 weeks. Furthermore, SDT fatty-Cho presented with increased plasma choline, similar to human NASH. There were no significant changes in the effects of feeding a cholesterol-enriched diet in Sprague-Dawley rats. SDT fatty-Cho has the potential to become a valuable animal model for NASH associated with type 2 diabetes and obesity.
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Affiliation(s)
- Y Toriniwa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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Kanegae K, Hiroshige K, Suda T, Iwamoto M, Ohta T, Nakashima Y, Ohtani A. Pharmacokinetics of Bisoprolol and Its Effect on Dialysis Refractory Hypertension. Int J Artif Organs 2018. [DOI: 10.1177/039139889902201204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The efficacy, safety, and pharmacokinetics of bisoprolol were investigated following oral administration once daily for 12 weeks in hyperreninemic patients with dialysis-refractory hypertension. Mean blood pressure rapidly fell from 132 to 112 mmHg in the 5.0-mg/day (n = 6) and from 142 to 128 mmHg in the 2.5-mg/day patients (n = 5), which were accompanied by a fall in plasma renin activity. On nondialysis days, Cmax and T1/2 were significantly higher in patients than in healthy control subjects. However, Cmax in the 2.5-mg/day patients was almost equal to that in healthy control subjects receiving 5.0 mg/day of bisoprolol. Plasma bisoprolol was dialyzable. During the course of the study, dialysis hypotension and bradycardia occurred in two patients receiving 5.0 mg/day of bisoprolol. In conclusion, a daily dose of 2.5 mg bisoprolol seems to be an adequate and relatively effective dose in our patients with dialysis-refractory hypertension.
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Affiliation(s)
- K. Kanegae
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka
| | - K. Hiroshige
- Renal Division, Social Insurance Chikuho Hospital, Fukuoka - Japan
| | - T. Suda
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka
| | - M. Iwamoto
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka
| | - T. Ohta
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka
| | - Y. Nakashima
- Second Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Fukuoka
| | - A. Ohtani
- Renal Division, Social Insurance Chikuho Hospital, Fukuoka - Japan
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Motohashi Y, Kemmochi Y, Maekawa T, Tadaki H, Sasase T, Tanaka Y, Kakehashi A, Yamada T, Ohta T. Diabetic macular edema-like ocular lesions in male spontaneously diabetic torii fatty rats. Physiol Res 2018. [PMID: 29527913 DOI: 10.33549/physiolres.933709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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
Diabetic macular edema (DME) is a major factor contributing to visual disabilities in diabetic patients, and the number of patients is increasing. Animal models play a key role in the development of novel therapies. In this study, pathophysiological analyses of ocular lesions in Spontaneously Diabetic Torii (SDT) fatty rats were performed. First, vascular endothelial growth factor (VEGF) concentrations in vitreous humor, retinal vascular permeability and retinal thickness were measured in SDT fatty rats (Experiment 1). Furthermore, the pharmacological effects of two anti-diabetic drugs, phlorizin and pioglitazone, on retinal lesions were evaluated (Experiment 2). As results, the SDT fatty rats exhibited VEGF increase in vitreous humor at 8 and 16 weeks of age, and both retinal vascular hyperpermeability and retinal thickening at 16 weeks of age. In particular, the layers between the retinal internal limiting membrane and the outer nuclear layer were thickened. Phlorizin treatment from 4 to 16 weeks of age improved hyperglycemia and normalized retinal thickness; however, the effect of pioglitazone on retinal thickness was not strong despite the normalization of hyperglycemia. These data demonstrate that the male SDT fatty rat is a useful model for developing new therapeutic approaches in DME.
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Affiliation(s)
- Y Motohashi
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Takatsuki, Osaka, Japan.
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Majikina A, Takahashi K, Saito S, Tominaga M, Ohta T. Involvement of nociceptive transient receptor potential channels in repellent action of pulegone. Biochem Pharmacol 2018; 151:89-95. [PMID: 29501584 DOI: 10.1016/j.bcp.2018.02.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 02/26/2018] [Indexed: 11/27/2022]
Abstract
Pulegone, one of avian repellents, is used to prevent the economic loss caused by birds. Chemical repellents often evoke unpleasant sensations and sensory irritation resulting in avoidance under some circumstances. It is recognized that some TRP channels expressing sensory neurons are related to nociception. Here we determined the molecular mechanisms of the repellent action of pulegone using isolated chicken sensory neurons and heterologous expression system. Pulegone increased the intracellular Ca2+ concentration ([Ca2+]i) in chicken sensory neurons. There were two types of neurons exhibiting different sensitivity to pulegone. One was responded to it at low concentrations and the other at high concentrations. Pharmacological analyses revealed that the former was predominantly mediated by TRP melastatin 8 (TRPM8), and the latter by both TRP ankyrin 1 (TRPA1) and TRPM8. An activation of both channels by pulegone was also determined using heterologously expression system. At high concentrations, pulegone suppressed chicken TRPM8 but not chicken TRPA1. The intraplantar injection of pulegone in chicks caused pain-related behaviors that were attenuated by TRPA1 antagonist. These results indicate that pulegone stimulates both TRPM8 and TRPA1 channel in chicken sensory neurons and suppresses the former but not the latter at high concentrations. Together, these data suggest that the molecular target for the repellent action of pulegone in avian species is nociceptive TRPA1.
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Affiliation(s)
- Azusa Majikina
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan
| | - Shigeru Saito
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences, Okazaki, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Japan.
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Sekita Y, Ohta T, Inoue M, Takeda H. Comparison of Examinees’ and Doctors’ Judgement of Health Status Using Data in an AMHTS. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryJudgements of examinees’ health status by doctors and by the examinees themselves are compared applying multiple discriminant analysis. The doctors’ judgements of the examinees’ health status are studied comparatively using laboratory data and the examinees’ subjective symptom data.This data was obtained in an Automated Multiphasic Health Testing System. We discuss the health conditions which are significant for the judgement of doctors about the examinees. The results show that the explanatory power, when using subjective symptom data, is fair in the case of the doctors’ judgement. We found common variables, such as nervousness, lack of perseverance etc., which form the first canonical axis.
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Takagi K, Miura K, Nakanuma S, Sakamoto S, Yamamoto H, Yagi T, Eguchi S, Ohta T, Wakai T, Ohtsuka M, Uemoto S, Kasahara M, Inomata Y. Six National University Consortium in Liver Transplant Professionals Training (SNUC-LT) Program in Japan. Transplant Proc 2018; 50:168-174. [DOI: 10.1016/j.transproceed.2017.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/09/2017] [Accepted: 11/03/2017] [Indexed: 10/18/2022]
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Nishizawa Y, Takahashi K, Oguma N, Tominaga M, Ohta T. Possible involvement of transient receptor potential ankyrin 1 in Ca2+
signaling via T-type Ca2+
channel in mouse sensory neurons. J Neurosci Res 2017; 96:901-910. [DOI: 10.1002/jnr.24208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 11/06/2017] [Accepted: 11/27/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Yuki Nishizawa
- Department of Veterinary Pharmacology, Faculty of Agriculture; Tottori University; Tottori Japan
| | - Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture; Tottori University; Tottori Japan
| | - Naoko Oguma
- Department of Veterinary Pharmacology, Faculty of Agriculture; Tottori University; Tottori Japan
| | - Makoto Tominaga
- Division of Cell Signaling; Okazaki Institute for Integrative Bioscience (National Institute for Physiological Sciences), National Institutes of Natural Sciences; Okazaki Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture; Tottori University; Tottori Japan
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Komura T, Sakai Y, Takabatake H, Harada K, Ohta T, Kitagawa H, Kaneko S. Immune-mediated cystatin A expression in patients with pancreatic ductal adenocarcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx711.056] [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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Miyake K, Ohta T, Nakayama H, Doe N, Terao Y, Oiki E, Nagatomo I, Yamashita Y, Abe T, Nishikura K, Kumanogoh A, Hashimoto K, Kawahara Y. CAPS1 RNA Editing Promotes Dense Core Vesicle Exocytosis. Cell Rep 2017; 17:2004-2014. [PMID: 27851964 DOI: 10.1016/j.celrep.2016.10.073] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 10/03/2016] [Accepted: 10/20/2016] [Indexed: 12/20/2022] Open
Abstract
Calcium-dependent activator protein for secretion 1 (CAPS1) plays a distinct role in the priming step of dense core vesicle (DCV) exocytosis. CAPS1 pre-mRNA is known to undergo adenosine-to-inosine RNA editing in its coding region, which results in a glutamate-to-glycine conversion at a site in its C-terminal region. However, the physiological significance of CAPS1 RNA editing remains elusive. Here, we created mutant mice in which edited CAPS1 was solely expressed. These mice were lean due to increased energy expenditure caused by physical hyperactivity. Electrophysiological and biochemical analyses demonstrated that the exocytosis of DCVs was upregulated in the chromaffin cells and neurons of these mice. Furthermore, we showed that edited CAPS1 bound preferentially to the activated form of syntaxin-1A, a component of the exocytotic fusion complex. These findings suggest that RNA editing regulates DCV exocytosis in vivo, affecting physical activity.
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Affiliation(s)
- Kotaro Miyake
- Department of RNA Biology and Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, Tottori, Tottori 680-8553, Japan
| | - Hisako Nakayama
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima 734-8551, Japan
| | - Nobutaka Doe
- General Education Center, Hyogo University of Health Sciences, Kobe, Hyogo 650-8530, Japan
| | - Yuri Terao
- Center for Medical Research and Education, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Eiji Oiki
- Center for Medical Research and Education, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Izumi Nagatomo
- Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yui Yamashita
- Animal Resource Development Unit, RIKEN Center for Life Science Technologies, Kobe, Hyogo 650-0047, Japan; Genetic Engineering Team, RIKEN Center for Life Science Technologies, Kobe, Hyogo 650-0047, Japan
| | - Takaya Abe
- Genetic Engineering Team, RIKEN Center for Life Science Technologies, Kobe, Hyogo 650-0047, Japan
| | | | - Atsushi Kumanogoh
- Department of Respiratory Medicine, Allergy and Rheumatic Diseases, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kouichi Hashimoto
- Department of Neurophysiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima 734-8551, Japan
| | - Yukio Kawahara
- Department of RNA Biology and Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan.
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Yoshita H, Yuki S, Yagisawa M, Tsuji Y, Kobayashi Y, Hatanaka K, Okuda H, Dazai M, Furukawa K, Ogawa K, Minami S, Ishiguro A, Honda T, Ohta T, Eto K, Kato T, Nakajima J, Sasaki T, Sakata Y, Komatsu Y. First report: A retrospective trial for evaluating the safety and efficacy of TAS-102 for patients with metastatic colorectal cancer: HGCSG1503. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.013] [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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43
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Miyagishima T, Yuki S, Muranaka T, Tsuji Y, Ota Y, Hatanaka K, Okuda H, Sasaki T, Dazai M, Konno J, Nakamura M, Ohta T, Honda T, Ishiguro A, Muto O, Kato S, Sato A, Abe M, Sakata Y, Komatsu Y. Analysis of tumor location: A retrospective trial for evaluating the safety and efficacy of regorafenib for patients with metastatic colorectal cancer: HGCSG1401. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.012] [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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44
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Kato T, Kanemaru A, Sugawara Y, Kawaji Y, Hiraoka T, Honda T, Nakajima R, Makita A, Itakura A, Yamazaki R, Ohta T. A combination intervention (cognitive training and physical exercise) could improve or maintain cognitive functioning in MCI subjects. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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45
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Manaka D, Nishitai R, Konishi S, Ohta T, Hattori T, Ann H, Kawaguchi K, Nishikawa Y, Kudo R, Hamasu S. Phase II study of Ccr-based dose-control of S-1 in the first-line chemotherapy of S-1/oxaliplatin (SOX) + bevacizumab regimen for advanced colorectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.139] [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: 11/15/2022] Open
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46
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Yuki S, Komatsu Y, Yagisawa M, Tsuji Y, Harada K, Hatanaka K, Okuda H, Hosokawa A, Ogawa K, Furukawa K, Minami S, Ishiguro A, Honda T, Ohta T, Dazai M, Eto K, Sasaki T, Nakajima J, Sakamoto N, Sakata Y. A retrospective cohort study evaluating the safety and efficacy of TAS-102 in patients with metastatic colorectal cancer [HGCSG1503]: Updated analysis. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.129] [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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47
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Saito T, Muramatsu M, Ishii Y, Saigo Y, Konuma T, Toriniwa Y, Miyajima K, Ohta T. Pathophysiological analysis of the progression of hepatic lesions in STAM mice. Physiol Res 2017; 66:791-799. [PMID: 28730823 DOI: 10.33549/physiolres.933592] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is a current health issue since the disease often leads to hepatocellular carcinoma; however, the pathogenesis of the disease has still not been fully elucidated. In this study, we investigated the pathophysiological changes observed in hepatic lesions in STAM mice, a novel NASH model. STAM mice, high fat-diet (HFD) fed mice, and streptozotocin (STZ) treated mice were prepared, and changes over time, such as biological parameters, mRNA expression, and histopathological findings, were evaluated once animal reached 5, 7, and 10 weeks of age. STZ mice presented with hyperglycemia and an increase in oxidative stress in immunohistochemical analyses of Hexanoyl-lysine: HEL from 5 weeks, with fibrosis in the liver also being observed from 5 weeks. HFD mice presented with hyperinsulinemia from 7 weeks and the slight hepatosteatosis was observed at 5 weeks, with changes significantly increasing until 10 weeks. STAM mice at 10 weeks showed significant hepatic changes, including hepatosteatosis, hypertrophic hepatocytes, and fibrosis, indicating pathological changes associated with NASH. These results suggested that the increase in oxidative stress with hyperglycemia triggered hepatic lesions in STAM mice, and insulin resistance promoted lesion formation with hepatic lipid accumulation. STAM mice may be a useful model for elucidating the pathogenesis of NASH with diabetes.
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Affiliation(s)
- T Saito
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Takatsuki, Osaka, Japan.
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Takahashi K, Ohta T. Membrane translocation of transient receptor potential ankyrin 1 induced by inflammatory cytokines in lung cancer cells. Biochem Biophys Res Commun 2017. [PMID: 28629997 DOI: 10.1016/j.bbrc.2017.06.082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Transient receptor potential ankyrin 1 (TRPA1) is known as one of the nociceptors expressed in sensory neurons. It also plays a role in non-neural cells in inflammatory sites. However, the regulatory mechanisms for the reactivity of TRPA1 in these cells under inflammatory conditions are not clear. To clarify these mechanisms, we examined the effects of inflammatory cytokines (interleukin [IL]-1α, IL-1β and tumor necrosis factor α [TNFα]) on TRPA1 reactivity and expression in the endogenously TRPA1-expressing lung tumor cell line A549. Treatment with IL-1α, but not IL-1β or TNFα, increased the number of cells responding to allyl isothiocyanate, a TRPA1 agonist, in a dose- and time-dependent manner. The IL-1α-induced increase of TRPA1 responsiveness was inhibited by an extracellular-regulated kinase (Erk) inhibitor (PD98059) but not by inhibitors of c-Jun kinase, p38 mitogen-activated protein kinase or phosphatidylinositol-3 kinase. Phosphorylation of Erk gradually increased at 24 h after its transient induction in cells treated with IL-1α. IL-1α increased the TRPA1 levels on biotinylated cell surface proteins. These results suggest that IL-1α enhances the translocation of TRPA1 to the plasma membrane via the activation of Erk in A549. TRPA1 may have a pathophysiological role in non-neural lung cells under inflammatory conditions.
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Affiliation(s)
- Kenji Takahashi
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, 680-8553, Japan.
| | - Toshio Ohta
- Department of Veterinary Pharmacology, Faculty of Agriculture, Tottori University, 680-8553, Japan.
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Affiliation(s)
| | - T. Ohta
- Research Institute for Humanity and Nature Kyoto Japan
| | - O. Takahashi
- Chitose Archaeological Operations Center Chitose Board of Education Chitose Hokkaido Japan
| | - I. Tayasu
- Research Institute for Humanity and Nature Kyoto Japan
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50
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Hanashima Y, Ohta T, Takamine Y, Yoshino A. P10.10 Pleomorphic xanthoastrocytoma without a tumor mass lesion influences intracranial hemorrhage: case report. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.328] [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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