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Yasui Y, Kato H, Ogura S, Kimura M, Kato A, Hirano Y, Morita H, Yasukawa T, Kurachi A, Takeda S, Morita A. Electrical stimulation of the lower eyelid orbicularis oculi muscle improves periocular dark circles. Skin Res Technol 2024; 30:e13678. [PMID: 38616507 PMCID: PMC11016813 DOI: 10.1111/srt.13678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND We developed and tested the safety and efficacy of a cosmetic device to improve dark circles using electrical muscle stimulation of the orbicularis oculi muscle. METHODS Overall, 18 participants (36 eyes) were studied. The following five items were evaluated before and after the intervention:(1) the Clinical Dark Circle Score using clinical findings and photographs, (2) transcutaneous oxygen partial pressure (TcPO2) on the lower eyelid, (3) thermography, (4) two-dimensional laser blood flowmetry, and (5) spectrophotometry. RESULTS The mean score at baseline was 2.0 ± 0.90 (mean ± standard deviation), and that at the end of the study was 1.2 ± 1.0 (Wilcoxon signed-rank sum test, p < 0.0001), indicating a significant reduction. The spectrophotometer showed a significant decrease in a* and L* values before and after use (Wilcoxon signed-rank sum test, p < 0.0001). There was also a weak negative correlation between the change in score and the change in blood flow and TcPO2 measured using a laser perfusion device (Spearman's rank correlation coefficient, r = -0.32 and -0.39, respectively). Stratified analysis of the baseline score showed a strong negative correlation between the change in score and the change in spectrophotometric a* in the subjects/group with mild periocular dark circles (Spearman's rank correlation coefficient, r = -0.46). Contrastingly, no correlation was observed for any of the measurements in the subjects/group with severe periocular dark circles. After 1 month, no device-related ophthalmic adverse events were observed in any of the participants. CONCLUSION Electrical muscle stimulation could improve periocular dark circles, especially in the subjects/group with mild periocular dark circles, and was safe.
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Affiliation(s)
- Yukiko Yasui
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiroshi Kato
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Shuntaro Ogura
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Masayo Kimura
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Aki Kato
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yoshio Hirano
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiroshi Morita
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Tsutomu Yasukawa
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | | | | | - Akimichi Morita
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
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Nagasaka M, Inoue Y, Nagao Y, Miyajima C, Morishita D, Aoki H, Aoyama M, Imamura T, Hayashi H. SET8 is a novel negative regulator of TGF-β signaling in a methylation-independent manner. Sci Rep 2023; 13:22877. [PMID: 38129484 PMCID: PMC10739863 DOI: 10.1038/s41598-023-49961-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
Transforming growth factor β (TGF-β) is a multifunctional cytokine that induces a diverse set of cellular processes principally through Smad-dependent transcription. Transcriptional responses induced by Smads are tightly regulated by Smad cofactors and histone modifications; however, the underlying mechanisms have not yet been elucidated in detail. We herein report lysine methyltransferase SET8 as a negative regulator of TGF-β signaling. SET8 physically associates with Smad2/3 and negatively affects transcriptional activation by TGF-β in a catalytic activity-independent manner. The depletion of SET8 results in an increase in TGF-β-induced plasminogen activator inhibitor-1 (PAI-1) and p21 expression and enhances the antiproliferative effects of TGF-β. Mechanistically, SET8 occupies the PAI-1 and p21 promoters, and a treatment with TGF-β triggers the replacement of the suppressive binding of SET8 with p300 on these promoters, possibly to promote gene transcription. Collectively, the present results reveal a novel role for SET8 in the negative regulation of TGF-β signaling.
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Affiliation(s)
- Mai Nagasaka
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Yasumichi Inoue
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan.
| | - Yuji Nagao
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Chiharu Miyajima
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Daisuke Morishita
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Hiromasa Aoki
- Department of Pathobiology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Mineyoshi Aoyama
- Department of Pathobiology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Takeshi Imamura
- Department of Molecular Medicine for Pathogenesis, Graduate School of Medicine, Ehime University, Ehime, 791-0295, Japan
| | - Hidetoshi Hayashi
- Department of Cell Signaling, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan.
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3
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Mitsui R, Miwa-Nishimura K, Hashitani H. Roles of endothelial prostaglandin I 2 in maintaining synchronous spontaneous Ca 2+ transients in rectal capillary pericytes. J Physiol 2023; 601:5213-5240. [PMID: 37819628 DOI: 10.1113/jp284284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 09/25/2023] [Indexed: 10/13/2023] Open
Abstract
In hollow visceral organs, capillary pericytes appear to drive spontaneous Ca2+ transients in the upstream arterioles. Here, mechanisms underlying the intercellular synchrony of pericyte Ca2+ transients were explored. Ca2+ dynamics in NG2 chondroitin sulphate proteoglycan (NG2)-expressing capillary pericytes were examined using rectal mucosa-submucosa preparations of NG2-GCaMP6 mice. Spontaneous Ca2+ transients arising from endoplasmic reticulum Ca2+ release were synchronously developed amongst capillary pericytes in a gap junction blocker (3 μM carbenoxolone)-sensitive manner and could spread into upstream vascular segments. Spontaneous Ca2+ transients were suppressed by the Ca2+ -activated Cl- channel (CaCC) blocker niflumic acid and their synchrony was diminished by a TMEM16A inhibitor (3 μM Ani9) in accordance with TMEM16A immunoreactivity in pericytes. In capillaries where cyclooxygenase (COX)-2 immunoreactivity was expressed in endothelium but not pericytes, non-selective COX inhibitors (1 μM indomethacin or 10 μM diclofenac) or COX-2 inhibitor (10 μM NS 398) disrupted the synchrony of spontaneous Ca2+ transients and raised the basal Ca2+ level. Subsequent prostaglandin I2 (PGI2 ; 100 nM) or the KATP channel opener levcromakalim restored the synchrony with a reduction in the Ca2+ level. PGI2 receptor antagonist (1 μM RO1138452) also disrupted the synchrony of spontaneous Ca2+ transients and increased the basal Ca2+ level. Subsequent levcromakalim restored the synchrony and reversed the Ca2+ rise. Thus, the synchrony of spontaneous Ca2+ transients in pericytes appears to be developed by the spread of spontaneous transient depolarisations arising from the opening of TMEM16A CaCCs. Endothelial PGI2 may play a role in maintaining the synchrony, presumably by stabilising the resting membrane potential in pericytes. KEY POINTS: Capillary pericytes in the rectal mucosa generate synchronous spontaneous Ca2+ transients that could spread into the upstream vascular segment. Spontaneous Ca2+ release from the endoplasmic reticulum (ER) triggers the opening of Ca2+ -activated Cl- channel TMEM16A and resultant depolarisations that spread amongst pericytes via gap junctions, establishing the synchrony of spontaneous Ca2+ transients in pericytes. Prostaglandin I2 (PGI2 ), which is constitutively produced by the endothelium depending on cyclooxygenase-2, appears to prevent premature ER Ca2+ releases in the pericytes allowing periodic, regenerative Ca2+ releases. Endothelial PGI2 may maintain the synchrony of pericyte activity by stabilising pericyte resting membrane potential by opening of KATP channels.
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Affiliation(s)
- Retsu Mitsui
- Department of Cell Physiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Kyoko Miwa-Nishimura
- Department of Cell Physiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Hikaru Hashitani
- Department of Cell Physiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
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4
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Murashima M, Ambe K, Aoki Y, Kasugai T, Tomonari T, Ono M, Mizuno M, Tohkin M, Hamano T. Epidemiology and predictors of hyponatremia in a contemporary cohort of patients with malignancy: a retrospective cohort study. Clin Kidney J 2023; 16:2072-2081. [PMID: 37915937 PMCID: PMC10616476 DOI: 10.1093/ckj/sfad189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Indexed: 11/03/2023] Open
Abstract
Background Hyponatremia is associated with worse outcomes among patients with malignancy. However, contemporary cohort data on epidemiology and risk factors are lacking. Methods In this single-centre, retrospective cohort study, patients who received intravenous antineoplastic agents from 2018 to 2020 at Nagoya City University Hospital were enrolled. Associations of demographics, antineoplastic agents, types of malignancy and concomitant medications with hyponatremia, defined as serum sodium concentration ≤130 mmol/l, were analysed by mixed-effects logistic regression and the machine learning-based LightGBM model artificial intelligence technology. Results Among 2644 patients, 657 (24.8%) developed at least one episode of hyponatremia. Approximately 80% of hyponatremia was due to sodium wasting from the kidneys. Variables associated with hyponatremia both by mixed-effects logistic regression and the LightGBM model were older age, hypoalbuminemia and higher estimated glomerular filtration rate. Among antineoplastic agents, cisplatin {odds ratio [OR] 1.52 [95% confidence interval (CI) 1.18-1.96]}, pembrolizumab [OR 1.42 (95% CI 1.02-1.97)] and bortezomib [OR 3.04 (95% CI 1.96-4.71)] were associated with hyponatremia and these variables also had a positive impact on predicted hyponatremia in the LightGBM model. Conclusions Hyponatremia was common among patients with malignancy. In addition to older age and poor nutritional status, novel antineoplastic agents, including immune checkpoint inhibitors and bortezomib, should be recognized as risk factors for hyponatremia.
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Affiliation(s)
- Miho Murashima
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kaori Ambe
- Department of Regulatory Science, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Yuka Aoki
- Department of Regulatory Science, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Takahisa Kasugai
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Tatsuya Tomonari
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Minamo Ono
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masashi Mizuno
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masahiro Tohkin
- Department of Regulatory Science, Nagoya City University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
| | - Takayuki Hamano
- Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
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5
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Tee LF, Young JJ, Maruyama K, Kimura S, Suzuki R, Endo Y, Kimura KD. Electric shock causes a fleeing-like persistent behavioral response in the nematode Caenorhabditis elegans. Genetics 2023; 225:iyad148. [PMID: 37595066 PMCID: PMC10550322 DOI: 10.1093/genetics/iyad148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 07/27/2023] [Indexed: 08/20/2023] Open
Abstract
Behavioral persistency reflects internal brain states, which are the foundations of multiple brain functions. However, experimental paradigms enabling genetic analyses of behavioral persistency and its associated brain functions have been limited. Here, we report novel persistent behavioral responses caused by electric stimuli in the nematode Caenorhabditis elegans. When the animals on bacterial food are stimulated by alternating current, their movement speed suddenly increases 2- to 3-fold, persisting for more than 1 minute even after a 5-second stimulation. Genetic analyses reveal that voltage-gated channels in the neurons are required for the response, possibly as the sensors, and neuropeptide signaling regulates the duration of the persistent response. Additional behavioral analyses implicate that the animal's response to electric shock is scalable and has a negative valence. These properties, along with persistence, have been recently regarded as essential features of emotion, suggesting that C. elegans response to electric shock may reflect a form of emotion, akin to fear.
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Affiliation(s)
- Ling Fei Tee
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Jared J Young
- Mills College at Northeastern University, Oakland, CA 94613, USA
| | - Keisuke Maruyama
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Sota Kimura
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Ryoga Suzuki
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
| | - Yuto Endo
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
- Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Koutarou D Kimura
- Graduate School of Science, Nagoya City University, Nagoya 467-8501, Japan
- Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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6
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Yagi-Utsumi M, Itoh SG, Okumura H, Yanagisawa K, Kato K, Nishimura K. The Double-Layered Structure of Amyloid-β Assemblage on GM1-Containing Membranes Catalytically Promotes Fibrillization. ACS Chem Neurosci 2023; 14:2648-2657. [PMID: 37482658 PMCID: PMC10401643 DOI: 10.1021/acschemneuro.3c00192] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/11/2023] [Indexed: 07/25/2023] Open
Abstract
Alzheimer's disease (AD) is associated with progressive accumulation of amyloid-β (Aβ) cross-β fibrils in the brain. Aβ species tightly associated with GM1 ganglioside, a glycosphingolipid abundant in neuronal membranes, promote amyloid fibril formation; therefore, they could be attractive clinical targets. However, the active conformational state of Aβ in GM1-containing lipid membranes is still unknown. The present solid-state nuclear magnetic resonance study revealed a nonfibrillar Aβ assemblage characterized by a double-layered antiparallel β-structure specifically formed on GM1 ganglioside clusters. Our data show that this unique assemblage was not transformed into fibrils on GM1-containing membranes but could promote conversion of monomeric Aβ into fibrils, suggesting that a solvent-exposed hydrophobic layer provides a catalytic surface evoking Aβ fibril formation. Our findings offer structural clues for designing drugs targeting catalytically active Aβ conformational species for the development of anti-AD therapeutics.
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Affiliation(s)
- Maho Yagi-Utsumi
- Exploratory
Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Institute
for Molecular Science (IMS), National Institutes
of Natural Sciences, Okazaki, Aichi 444-8585, Japan
- Graduate
School of Pharmaceutical Sciences, Nagoya
City University, Nagoya, Aichi 467-8603, Japan
| | - Satoru G. Itoh
- Exploratory
Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Institute
for Molecular Science (IMS), National Institutes
of Natural Sciences, Okazaki, Aichi 444-8585, Japan
| | - Hisashi Okumura
- Exploratory
Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Institute
for Molecular Science (IMS), National Institutes
of Natural Sciences, Okazaki, Aichi 444-8585, Japan
| | - Katsuhiko Yanagisawa
- Research
and Development Center for Precision Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8550, Japan
- Research
Institute, National Center for Geriatrics
and Gerontology, Obu, Aichi 474-8511, Japan
| | - Koichi Kato
- Exploratory
Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
- Institute
for Molecular Science (IMS), National Institutes
of Natural Sciences, Okazaki, Aichi 444-8585, Japan
- Graduate
School of Pharmaceutical Sciences, Nagoya
City University, Nagoya, Aichi 467-8603, Japan
| | - Katsuyuki Nishimura
- Institute
for Molecular Science (IMS), National Institutes
of Natural Sciences, Okazaki, Aichi 444-8585, Japan
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Torii A, Tomita N, Kuno M, Nishio M, Yamada Y, Takaoka T, Okazaki D, Niwa M, Kita N, Takano S, Murao T, Ogawa Y, Hiwatashi A. Intensity-modulated radiation therapy with the central shielding technique for patients with uterine cervical cancer†. J Radiat Res 2023:rrad039. [PMID: 37321676 DOI: 10.1093/jrr/rrad039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/25/2023] [Indexed: 06/17/2023]
Abstract
We aimed to examine outcomes and toxicities of intensity-modulated radiation therapy (IMRT) with the central shielding (CS) technique for patients with uterine cervical cancer. This retrospective study included 54 patients with International Federation of Gynecology and Obstetrics IB-IVA cancer. Whole pelvic radiotherapy or extended-field radiotherapy were performed at the dose of 50.4 Gy in 28 fractions with helical tomotherapy (HT). Six patients had para-aortic lymph node metastases. The CS technique with HT was utilized after a total dose of 28.8-41.4 Gy to reduce doses to the rectum and bladder. The prescribed dose of intracavitary brachytherapy was mainly 18-24 Gy in three or four fractions at point A. Concurrent chemotherapy was used for 47 patients (87%). Median follow-up time was 56 months. Seventeen patients (31%) developed recurrence. The recurrence of the cervix was observed in two patients (4%). The 5-year rates of the locoregional control, progression-free survival (PFS) and overall survival were 79, 66 and 82%, respectively. Among several factors evaluated, histological type of adenocarcinoma was only a significantly worse prognostic factor for PFS by multivariate analysis (hazard ratio, 4.9 [95% confidence interval, 1.3-18], P = 0.018). Grade 2 or higher late toxicities were observed in nine patients (17%). Two patients (4%) each had grade 3 proctitis and grade 3 ileus, respectively. No grade 4 toxicity or treatment-related death was observed. The results suggest that IMRT with the CS technique allows a high local control without increasing the risk of complications for cervical cancer patients.
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Affiliation(s)
- Akira Torii
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Natsuo Tomita
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Mayu Kuno
- Department of Radiation Oncology, Ichinomiya Municipal Hospital, 2-2-22 Bunkyo, Ichinomiya, Aichi 491-8558, Japan
| | - Masahiro Nishio
- Department of Radiation Oncology, Kasugai Municipal Hospital, 1-1-1 Takaki-cho, Kasugai, Aichi 486-8510, Japan
| | - Yuki Yamada
- Department of Radiation Oncology, Konan Kosei Hospital, 137 Ohmatsubara, Takaya-cho, Konan, Aichi 483-8704, Japan
| | - Taiki Takaoka
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Dai Okazaki
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Masanari Niwa
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Nozomi Kita
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Seiya Takano
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - Takayuki Murao
- Department of Radiation Oncology, Ichinomiya Municipal Hospital, 2-2-22 Bunkyo, Ichinomiya, Aichi 491-8558, Japan
| | - Yasutaka Ogawa
- Department of Radiation Oncology, Kasugai Municipal Hospital, 1-1-1 Takaki-cho, Kasugai, Aichi 486-8510, Japan
| | - Akio Hiwatashi
- Department of Radiation Oncology, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
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Fujimoto N, Nagaoka K, Tatsuno I, Oishi H, Tomita M, Hasegawa T, Tanaka Y, Matsumoto T. Wavelength dependence of ultraviolet light inactivation for SARS-CoV-2 omicron variants. Sci Rep 2023; 13:9706. [PMID: 37322228 PMCID: PMC10272214 DOI: 10.1038/s41598-023-36610-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 06/07/2023] [Indexed: 06/17/2023] Open
Abstract
Ultraviolet (UV) irradiation offers an effective and convenient method for the disinfection of pathogenic microorganisms. However, UV irradiation causes protein and/or DNA damage; therefore, further insight into the performance of different UV wavelengths and their applications is needed to reduce risks to the human body. In this paper, we determined the efficacy of UV inactivation of the SARS-CoV-2 omicron BA.2 and BA.5 variants in a liquid suspension at various UV wavelengths by the 50% tissue culture infection dose (TCID50) method and quantitative polymerase chain reaction (qPCR) assay. The inactivation efficacy of 220 nm light, which is considered safe for the human body, was approximately the same as that of health hazardous 260 nm light for both BA.2 and BA.5. Based on the inactivation rate constants determined by the TCID50 and qPCR methods versus the UV wavelength, the action spectra were determined, and BA.2 and BA.5 showed almost the same spectra. This result suggests that both variants have the same UV inactivation characteristics.
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Affiliation(s)
- Nahoko Fujimoto
- Department of Gastroenterology and Hepatology, Faculty of Life Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Katsuya Nagaoka
- Department of Gastroenterology and Hepatology, Faculty of Life Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Ichiro Tatsuno
- Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Hisashi Oishi
- Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Makoto Tomita
- Department of Physics, Faculty of Science, Shizuoka University, Shizuoka, 422-8529, Japan
| | - Tadao Hasegawa
- Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan
| | - Yasuhito Tanaka
- Department of Gastroenterology and Hepatology, Faculty of Life Sciences, Kumamoto University, Kumamoto, 860-8556, Japan
| | - Takahiro Matsumoto
- Department of Gastroenterology and Hepatology, Faculty of Life Sciences, Kumamoto University, Kumamoto, 860-8556, Japan.
- Graduate School of Medical Sciences, Nagoya City University, Nagoya, 467-8601, Japan.
- Graduate School of Design and Architecture, Nagoya City University, Nagoya, 464-0083, Japan.
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9
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Yamada Y, Morita K, Sugiura T, Toyoda Y, Mihara N, Nagasaka M, Takaya H, Tanaka K, Koitaya T, Nakatani N, Ariga-Miwa H, Takakusagi S, Hitomi Y, Kudo T, Tsuji Y, Yoshizawa K, Tanaka K. Stacking of a Cofacially Stacked Iron Phthalocyanine Dimer on Graphite Achieved High Catalytic CH 4 Oxidation Activity Comparable to That of pMMO. JACS Au 2023; 3:823-833. [PMID: 37006766 PMCID: PMC10052267 DOI: 10.1021/jacsau.2c00618] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 06/19/2023]
Abstract
Numerous biomimetic molecular catalysts inspired by methane monooxygenases (MMOs) that utilize iron or copper-oxo species as key intermediates have been developed. However, the catalytic methane oxidation activities of biomimetic molecule-based catalysts are still much lower than those of MMOs. Herein, we report that the close stacking of a μ-nitrido-bridged iron phthalocyanine dimer onto a graphite surface is effective in achieving high catalytic methane oxidation activity. The activity is almost 50 times higher than that of other potent molecule-based methane oxidation catalysts and comparable to those of certain MMOs, in an aqueous solution containing H2O2. It was demonstrated that the graphite-supported μ-nitrido-bridged iron phthalocyanine dimer oxidized methane, even at room temperature. Electrochemical investigation and density functional theory calculations suggested that the stacking of the catalyst onto graphite induced partial charge transfer from the reactive oxo species of the μ-nitrido-bridged iron phthalocyanine dimer and significantly lowered the singly occupied molecular orbital level, thereby facilitating electron transfer from methane to the catalyst in the proton-coupled electron-transfer process. The cofacially stacked structure is advantageous for stable adhesion of the catalyst molecule on the graphite surface in the oxidative reaction condition and for preventing decreases in the oxo-basicity and generation rate of the terminal iron-oxo species. We also demonstrated that the graphite-supported catalyst exhibited appreciably enhanced activity under photoirradiation owing to the photothermal effect.
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Affiliation(s)
- Yasuyuki Yamada
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
- Research
Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
| | - Kentaro Morita
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
| | - Takuya Sugiura
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
| | - Yuka Toyoda
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
| | - Nozomi Mihara
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
| | | | - Hikaru Takaya
- Institute
for Molecular Science, Myodaiji, Okazaki444-8585, Japan
| | - Kiyohisa Tanaka
- Institute
for Molecular Science, Myodaiji, Okazaki444-8585, Japan
| | - Takanori Koitaya
- Institute
for Molecular Science, Myodaiji, Okazaki444-8585, Japan
| | - Naoki Nakatani
- Department
of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji192-0397, Tokyo, Japan
| | - Hiroko Ariga-Miwa
- Institute
for Catalysis, Hokkaido University, Kita 21-10, Kita-ku, Sapporo001-0021, Hokkaido, Japan
| | - Satoru Takakusagi
- Institute
for Catalysis, Hokkaido University, Kita 21-10, Kita-ku, Sapporo001-0021, Hokkaido, Japan
| | - Yutaka Hitomi
- Department
of Molecular Chemistry and Biochemistry, Graduate School of Science
and Engineering, Doshisha University, Kyotanabe610-0321, Kyoto, Japan
| | - Toshiji Kudo
- Daltonics
Division, Bruker Japan K.K., 3-9, Moriya-cho, Kanagawa-ku, Yokohama-shi221-0022, Kanagawa, Japan
| | - Yuta Tsuji
- Institute
for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka819-0385, Japan
| | - Kazunari Yoshizawa
- Institute
for Materials Chemistry and Engineering and IRCCS, Kyushu University, 744
Motooka, Nishi-ku, Fukuoka819-0385, Japan
| | - Kentaro Tanaka
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya464-8602, Japan
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10
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Mikami S, Miura Y, Kondo S, Sakai K, Nishimura H, Kyoyama H, Moriyama G, Koyama N, Noguchi H, Ohkubo H, Kanazawa S, Uematsu K. Nintedanib induces gene expression changes in the lung of induced-rheumatoid arthritis–associated interstitial lung disease mice. PLoS One 2022; 17:e0270056. [PMID: 35714115 PMCID: PMC9205484 DOI: 10.1371/journal.pone.0270056] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 06/02/2022] [Indexed: 12/15/2022] Open
Abstract
Nintedanib is a multi-tyrosine kinase inhibitor widely used to treat progressive fibrosing interstitial lung diseases because it slows the reduction in forced vital capacity. However, the prognosis for patients treated with nintedanib remains poor. To improve nintedanib treatment, we examined the effects of nintedanib on gene expression in the lungs of induced-rheumatoid arthritis–associated interstitial lung disease model mice, which develop rheumatoid arthritis and subsequent pulmonary fibrosis. Using next-generation sequencing, we identified 27 upregulated and 130 downregulated genes in the lungs of these mice after treatment with nintedanib. The differentially expressed genes included mucin 5B and heat shock protein 70 family genes, which are related to interstitial lung diseases, as well as genes associated with extracellular components, particularly the myocardial architecture, suggesting unanticipated effects of nintedanib. Of the genes upregulated in the nintedanib-treated lung, expression of regulatory factor X2, which is suspected to be involved in cilia movement, and bone morphogenetic protein receptor type 2, which is involved in the pathology of pulmonary hypertension, was detected by immunohistochemistry and RNA in situ hybridization in peripheral airway epithelium and alveolar cells. Thus, the present findings indicate a set of genes whose expression alteration potentially underlies the effects of nintedanib on pulmonary fibrosis. It is expected that these findings will contribute to the development of improved nintedanib strategies for the treatment of progressive fibrosing interstitial lung diseases.
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Affiliation(s)
- Shintaro Mikami
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Yoko Miura
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Shinji Kondo
- Center for Genome Informatics, Joint Support Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka, Japan
| | - Kosuke Sakai
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Hiroaki Nishimura
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Hiroyuki Kyoyama
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Gaku Moriyama
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Nobuyuki Koyama
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
| | - Hideki Noguchi
- Center for Genome Informatics, Joint Support Center for Data Science Research, Research Organization of Information and Systems, Mishima, Shizuoka, Japan
| | - Hirotsugu Ohkubo
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Satoshi Kanazawa
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Kazutsugu Uematsu
- Department of Pulmonary Medicine, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama, Japan
- * E-mail:
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11
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Miura Y, Lam M, Bourke JE, Kanazawa S. Bimodal fibrosis in a novel mouse model of bleomycin-induced usual interstitial pneumonia. Life Sci Alliance 2022; 5:e202101059. [PMID: 34728556 PMCID: PMC8572746 DOI: 10.26508/lsa.202101059] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 11/24/2022] Open
Abstract
Idiopathic pulmonary fibrosis is pathologically represented by usual interstitial pneumonia (UIP). Conventional bleomycin models used to study pathogenic mechanisms of pulmonary fibrosis display transient inflammation and fibrosis, so their relevance to UIP is limited. We developed a novel chronic induced-UIP (iUIP) model, inducing fibrosis in D1CC×D1BC transgenic mice by intra-tracheal instillation of bleomycin mixed with microbubbles followed by sonoporation (BMS). A bimodal fibrotic lung disease was observed over 14 wk, with an acute phase similar to nonspecific interstitial pneumonia (NSIP), followed by partial remission and a chronic fibrotic phase with honeycombing similar to UIP. In this secondary phase, we observed poor vascularization despite elevated PDGFRβ expression. γ2PF- and MMP7-positive epithelial cells, consistent with an invasive phenotype, were predominantly adjacent to fibrotic areas. Most invasive cells were Scgb1a1 and/or Krt5 positive. This iUIP mouse model displays key features of idiopathic pulmonary fibrosis and has identified potential mechanisms contributing to the onset of NSIP and progression to UIP. The model will provide a useful tool for the assessment of therapeutic interventions to oppose acute and chronic fibrosis.
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Affiliation(s)
- Yoko Miura
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Maggie Lam
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Jane E Bourke
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Satoshi Kanazawa
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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12
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Uraki R, Imai M, Ito M, Shime H, Odanaka M, Okuda M, Kawaoka Y, Yamazaki S. Foxp3+ CD4+ regulatory T cells control dendritic cells in inducing antigen-specific immunity to emerging SARS-CoV-2 antigens. PLoS Pathog 2021; 17:e1010085. [PMID: 34882757 PMCID: PMC8659413 DOI: 10.1371/journal.ppat.1010085] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/02/2021] [Indexed: 12/27/2022] Open
Abstract
Regulatory T (Treg) cells, which constitute about 5-10% of CD4+T cells expressing Foxp3 transcription factor and CD25(IL-2 receptor α chain), are key regulators in controlling immunological self-tolerance and various immune responses. However, how Treg cells control antigen-specific immunity to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains unclear. In this study, we examined the effect of transient breakdown of the immunological tolerance induced by Treg-cell depletion on adaptive immune responses against administered SARS-CoV-2 antigen, spike protein 1 (S1). Notably, without the use of adjuvants, transient Treg-cell depletion in mice induced anti-S1 antibodies that neutralized authentic SARS-CoV-2, follicular helper T cell formation and S1-binding germinal center B cell responses, but prevented the onset of developing autoimmune diseases. To further clarify the mechanisms, we investigated maturation of dendritic cells (DCs), which is essential to initiate antigen-specific immunity. We found that the transient Treg-cell depletion resulted in maturation of both migratory and resident DCs in draining lymph nodes that captured S1-antigen. Moreover, we observed S1-specific CD4+ T cells and CD8+ T cells with interferon-γ production. Thus, captured S1 was successfully presented by DCs, including cross-presentation to CD8+ T cells. These data indicate that transient Treg-cell depletion in the absence of adjuvants induces maturation of antigen-presenting DCs and succeeds in generating antigen-specific humoral and cellular immunity against emerging SARS-CoV-2 antigens. Finally, we showed that SARS-CoV-2 antigen-specific immune responses induced by transient Treg-cell depletion in the absence of adjuvants were compatible with those induced with an effective adjuvant, polyriboinosinic:polyribocytidyl acid (poly IC) and that the combination of transient Treg-cell depletion with poly IC induced potent responses. These findings highlight the capacity for manipulating Treg cells to induce protective adaptive immunity to SARS-CoV-2 with activating antigen-presenting DCs, which may improve the efficacy of ongoing vaccine therapies and help enhance responses to emerging SARS-CoV-2 variants.
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Affiliation(s)
- Ryuta Uraki
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masaki Imai
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Mutsumi Ito
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
| | - Hiroaki Shime
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Mizuyu Odanaka
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Moe Okuda
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
| | - Yoshihiro Kawaoka
- Division of Virology, Department of Microbiology and Immunology, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
- Department of Special Pathogens, International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
- Department of Pathobiological Science, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Shinjuku-ku, Tokyo, Japan
| | - Sayuri Yamazaki
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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13
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Shawki HH, Ishikawa-Yamauchi Y, Kawashima A, Katoh Y, Matsuda M, Al-Soudy AS, Minisy FM, Kuno A, Gulibaikelamu X, Hirokawa T, Takahashi S, Oishi H. EFCAB2 is a novel calcium-binding protein in mouse testis and sperm. PLoS One 2019; 14:e0214687. [PMID: 30933994 PMCID: PMC6443151 DOI: 10.1371/journal.pone.0214687] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/18/2019] [Indexed: 11/18/2022] Open
Abstract
Calcium-binding proteins regulate ion metabolism and the necessary signaling pathways for the maturational events of sperm. Our aim is to identify the novel calcium-binding proteins in testis. The gene EFCAB2 (GenBank NM_026626.3, NP_080902.1) was not previously examined, and its properties and exact mechanisms of action are unknown. In this study, we performed phylogenetic and structure prediction analyses of EFCAB2, which displays definitive structural features. Additionally, the distribution, localization, and calcium binding ability of mouse EFCAB2 were investigated. Results revealed extensive conservation of EFCAB2 among different eukaryotic orthologs. The constructed 3D model predicted that mouse EFCAB2 contains seven α-helices and two EF-hand motifs. The first EF-hand motif is located in N-terminal, while the second is located in C-terminal. By aligning the 3D structure of Ca2+-binding loops from EFCAB2 with calmodulin, we predicted six residues that might be involved in Ca2+ binding. The distribution of the Efcab2 mRNA, as determined by northern blotting, was detected only in the testis among mouse tissues. Native and recombinant EFCAB2 protein were detected by western blotting as one band at 20 kDa. In situ hybridization and immunohistochemical analyses showed its localization specifically in spermatogenic cells from primary spermatocytes to elongate spermatids within the seminiferous epithelium, but neither spermatogonia nor somatic cells were expressed. Moreover, EFCAB2 was specifically localized to the principal piece of cauda epididymal sperm flagellum. Furthermore, the analyses of purified recombinant EFCAB2 by Stains-all, ruthenium red staining, and by applying in vitro autoradiography assay showed that the physiological function of this protein is Ca2+ binding. These results suggested that EFCAB2 might be involved in the control of sperm flagellar movement. Altogether, here we describe about EFCAB2 as a novel calcium-binding protein in mouse testis and sperm.
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Affiliation(s)
- Hossam H. Shawki
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
- Department of Animal Genetic Resources, National Gene Bank, Giza, Egypt
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- * E-mail: (HHS); (AK)
| | - Yu Ishikawa-Yamauchi
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Akihiro Kawashima
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- * E-mail: (HHS); (AK)
| | - Yuki Katoh
- Institute for Advanced Medical Research, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Manabu Matsuda
- Department of Arts and Sciences, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Al-Sayed Al-Soudy
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
- Department of Animal Genetic Resources, National Gene Bank, Giza, Egypt
| | - Fatma M. Minisy
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Pathology Department, Medical Research Division, National Research Centre, Giza, Egypt
| | - Akihiro Kuno
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
| | - Xiafukaiti Gulibaikelamu
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
| | - Takatsugu Hirokawa
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Koutou-ku, Tokyo, Japan
| | - Satoru Takahashi
- Department of Anatomy and Embryology, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Japan
| | - Hisashi Oishi
- Department of Comparative and Experimental Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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14
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Kaneko N, Herranz-Pérez V, Otsuka T, Sano H, Ohno N, Omata T, Nguyen HB, Thai TQ, Nambu A, Kawaguchi Y, García-Verdugo JM, Sawamoto K. New neurons use Slit-Robo signaling to migrate through the glial meshwork and approach a lesion for functional regeneration. Sci Adv 2018; 4:eaav0618. [PMID: 30547091 PMCID: PMC6291311 DOI: 10.1126/sciadv.aav0618] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/11/2018] [Indexed: 06/09/2023]
Abstract
After brain injury, neural stem cell-derived neuronal precursors (neuroblasts) in the ventricular-subventricular zone migrate toward the lesion. However, the ability of the mammalian brain to regenerate neuronal circuits for functional recovery is quite limited. Here, using a mouse model for ischemic stroke, we show that neuroblast migration is restricted by reactive astrocytes in and around the lesion. To migrate, the neuroblasts use Slit1-Robo2 signaling to disrupt the actin cytoskeleton in reactive astrocytes at the site of contact. Slit1-overexpressing neuroblasts transplanted into the poststroke brain migrated closer to the lesion than did control neuroblasts. These neuroblasts matured into striatal neurons and efficiently regenerated neuronal circuits, resulting in functional recovery in the poststroke mice. These results suggest that the positioning of new neurons will be critical for functional neuronal regeneration in stem/progenitor cell-based therapies for brain injury.
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Affiliation(s)
- N. Kaneko
- Department of Developmental and Regenerative Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - V. Herranz-Pérez
- Laboratory of Comparative Neurobiology, Instituto Cavanilles, Universidad de Valencia, CIBERNED, C/Catedrático José Beltrán, 2, Paterna, 46980 Valencia, Spain
- Predepartamental Unit of Medicine, Faculty of Health Sciences, Universitat Jaume I, Q-6250003-H Av. de Vicent Sos Baynat, s/n, 12071 Castelló de la Plana, Spain
| | - T. Otsuka
- Division of Cerebral Circuitry, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
| | - H. Sano
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
- Division of System Neurophysiology, National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - N. Ohno
- Department of Anatomy, Division of Histology and Cell Biology, Jichi Medical University, School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - T. Omata
- Department of Developmental and Regenerative Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
| | - H. B. Nguyen
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Department of Anatomy, Faculty of Medicine, University of Medicine and Pharmacy (UMP), Ho Chi Minh City 700000, Vietnam
| | - T. Q. Thai
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - A. Nambu
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
- Division of System Neurophysiology, National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Y. Kawaguchi
- Division of Cerebral Circuitry, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
| | - J. M. García-Verdugo
- Laboratory of Comparative Neurobiology, Instituto Cavanilles, Universidad de Valencia, CIBERNED, C/Catedrático José Beltrán, 2, Paterna, 46980 Valencia, Spain
| | - K. Sawamoto
- Department of Developmental and Regenerative Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi 467-8601, Japan
- Division of Neural Development and Regeneration, National Institute for Physiological Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
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15
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Akechi T, Yamaguchi T, Uchida M, Imai F, Momino K, Katsuki F, Sakurai N, Miyaji T, Horikoshi M, Furukawa TA, Iwata H, Uchitomi Y. Smartphone problem-solving and behavioural activation therapy to reduce fear of recurrence among patients with breast cancer (SMartphone Intervention to LEssen fear of cancer recurrence: SMILE project): protocol for a randomised controlled trial. BMJ Open 2018; 8:e024794. [PMID: 30413519 PMCID: PMC6231603 DOI: 10.1136/bmjopen-2018-024794] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION One of the most common distressing conditions experienced by breast cancer survivors is fear of cancer recurrence (FCR). There is, however, no standard intervention for ameliorating FCR. Our clinical experience and previous studies have suggested the potential benefits of problem-solving therapy (PST) and behavioural activation (BA). Given the huge number of cancer survivors and limited number of therapists to competently conduct PST and BA, we have developed PST and BA smartphone applications. This study aimed to evaluate the efficacy of the smartphone-based PST (Kaiketsu-App) and BA (Genki-App) apps in reducing FCR in patients with breast cancer. METHODS AND ANALYSIS The SMartphone Intervention to LEssen fear of cancer recurrence project is an open-label, individually randomised, parallel-group trial. Allocation will be managed by a central server using a computer-generated random allocation sequence provided by an independent data centre. Participants will be randomised to smartphone-based intervention plus treatment as usual (TAU) or waitlist control with TAU alone. The primary endpoint of the study is the Japanese version of the Concerns About Recurrence Scale, which will be administered as an electronic patient-reported outcome on the patients' smartphone after 8 weeks. ETHICS AND DISSEMINATION The present study is subject to the ethical guidelines for clinical studies published by Japan's Ministry of Education, Science and Technology and Ministry of Health, Labour and Welfare and the modified Act on the Protection of Personal Information as well as the ethical principles established for research on humans stipulated in the Declaration of Helsinki and further amendments thereto. The protocol was approved by the Institutional Review Board of Nagoya City University on 15 January 2018 (ID: 60-00-1171). TRIAL STATUS The randomised trial, which commenced on 2 April 2018, currently enrols participants. The estimated end date for this study is in March 2020. TRIAL REGISTRATION NUMBER UMIN000031140; Pre-results.
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Affiliation(s)
- Tatsuo Akechi
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Division of Palliative Care and Psycho-oncology, Nagoya City University Hospital, Nagoya, Japan
| | - Takuhiro Yamaguchi
- Division of Biostatistics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Megumi Uchida
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Division of Palliative Care and Psycho-oncology, Nagoya City University Hospital, Nagoya, Japan
| | - Fuminobu Imai
- Department of Psychiatry and Cognitive-Behavioral Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- Division of Palliative Care and Psycho-oncology, Nagoya City University Hospital, Nagoya, Japan
| | - Kanae Momino
- Department of Nursing Administration and Management, Nagoya City University School of Nursing, Nagoya, Japan
| | - Fujika Katsuki
- Department of Psychiatric and Mental Health Nursing, Nagoya City University School of Nursing, Nagoya, Japan
| | | | - Tempei Miyaji
- Department of Clinical Trial Data Management, Tokyo University Graduate School of Medicine, Tokyo, Japan
| | - Masaru Horikoshi
- National Center for Cognitive Behavior Therapy and Research, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Toshi A Furukawa
- Department of Health Promotion of Human Behavior, Graduate School of Medicine and School of Public Health, Kyoto University, Kyoto, Japan
| | - Hiroji Iwata
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Yosuke Uchitomi
- Behavioral and Survivorship Research Group, Innovation Center for Supportive, Palliative and Psychosocial Care, National Cancer Center Hospital, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
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16
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Takaishi T, Hayashi T. Stair ascending-descending exercise accelerates the decrease in postprandial hyperglycemia more efficiently than bicycle exercise. BMJ Open Diabetes Res Care 2017; 5:e000428. [PMID: 29071088 PMCID: PMC5640078 DOI: 10.1136/bmjdrc-2017-000428] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 08/10/2017] [Accepted: 08/29/2017] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Stair climbing-descending exercise (ST-EX) is a convenient method to increase exercise intensity. We compared the acute effect of ST-EX on lowering postprandial hyperglycemia with that of constant bicycle exercise (BI-EX) performed at the same heart rate (HR). RESEARCH DESIGN AND METHODS Seven people with type 2 diabetes and seven with impaired glucose tolerance volunteered for this study. The step rate for ST-EX and work rate for BI-EX were individually determined to correspond to high-moderate to low-vigorous intensity (HR ~130 beats per minute). For the ST-EX trial, the subjects performed 16 repetitions of walking down one flight of stairs followed by climbing up to the starting point (~8 min in duration) 90 min after consuming a test meal. For the BI-EX trial, the subjects performed a constant pedaling exercise for the same duration at the same time after the meal. RESULTS The reduction in blood glucose (BG) level between 90 and 105 min after a meal was significantly greater for ST-EX (-4.0±0.7mmol/L) than for BI-EX (-2.7±0.9mmol/L). The net reduction in BG between 90 and 105 min was also significantly greater for ST-EX (-3.2±0.7mmol/L) than for BI-EX (-2.0±0.6mmol/L). Serum insulin levels did not differ between the groups. Oxygen consumption for ST-EX was higher than that for BI-EX, but the blood lactate level and respiratory exchange ratio (RER) for ST-EX were lower than those for BI-EX. CONCLUSIONS Compared with BI-EX performed at the same HR, ST-EX more rapidly decreased postprandial BG level with lower blood lactate and RER responses. A short bout of ST-EX may be clinically useful to acutely ameliorate BG levels after meals.
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Affiliation(s)
- Tetsuo Takaishi
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Tatsuya Hayashi
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Japan
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