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Shahjahan M, Rahman ML, Ohno Y, Zahangir MM, Ando H. Lunar Age-Dependent Oscillations in Expression of the Genes for Kisspeptin, GnIH, and Their Receptors in the Grass Puffer during the Spawning Season. Zoolog Sci 2024; 41:97-104. [PMID: 38587522 DOI: 10.2108/zs230061] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 06/30/2023] [Accepted: 08/17/2023] [Indexed: 04/09/2024]
Abstract
Grass puffer is a semilunar-synchronized spawner: spawning occurs on beaches only for several days of spring tide around new moon (lunar age 0) and full moon (lunar age 15) every 2 weeks from spring to early summer. To investigate the role of kisspeptin and gonadotropin-inhibitory hormone (GnIH) in the semilunar-synchronized spawning, lunar age-dependent expression of the genes encoding kisspeptin (kiss2), kisspeptin receptor (kissr2), GnIH (gnih), GnIH receptor (gnihr), gonadotropin-releasing hormone 1 (GnRH1) (gnrh1), and three gonadotropin (GTH) subunits (gpa, fshb, lhb) was examined in the male grass puffer, which was kept in an aquarium under natural light condition in a lunar month during the spawning period. In the brain, both kiss2 and kissr2 showed lunar variations with a peak at lunar age 10, while both gnih and gnihr showed semilunar variations with two peaks at lunar age 0 and 20. On the other hand, gnrh1 showed semilunar variation with two peaks at lunar age 0 and 15. In the pituitary, kiss2, kissr2, gnih, and gnihr showed similar variations to those shown in the brain. The fshb and lhb mRNA levels showed semilunar variations with two peaks at lunar age 0 and 15. The present study shows lunar and semilunar oscillations of kiss2/kissr2 and gnih/gnihr expressions, respectively, with their peaks around spring tide in the brain and pituitary along with the semilunar expressions of gnrh1 and the pituitary GTH subunit genes. These results suggest that the lunar age-dependent expressions of the kisspeptin, GnIH, and their receptor genes may be primarily important in the control of the precisely timed semilunar spawning of the grass puffer.
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Affiliation(s)
- Md Shahjahan
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Mohammad Lutfar Rahman
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
- Department of Genetics and Fish Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
| | - Yuki Ohno
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
| | - Md Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
- Department of Fish Biology and Biotechnology, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram-4225, Bangladesh
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan,
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Sakai M, Takao K, Mizuno M, Ando H, Kawashima Y, Kato T, Kubota S, Hirose T, Hirota T, Horikawa Y, Yabe D. Two cases of systemic lupus erythematosus (SLE) after administration of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine. Mod Rheumatol Case Rep 2023:rxad008. [PMID: 36715089 DOI: 10.1093/mrcr/rxad008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 10/31/2022] [Revised: 01/06/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
Although there is great demand for increased COVID-19 vaccination worldwide, rare side effects of the vaccines in susceptible individuals are attracting attention. We recently treated two patients who developed SLE after administration of a SARS-CoV-2 vaccine from Pfizer-BioNTech or Moderna. While causal relationships between vaccination and adverse events are difficult to discern due to both confounding and masking factors, our findings suggest that attention to possible adjuvant-related autoimmune diseases in certain individuals receiving SARS-CoV-2 vaccines is appropriate.
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Affiliation(s)
- Mayu Sakai
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Ken Takao
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masami Mizuno
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hironori Ando
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yui Kawashima
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takehiro Kato
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Saki Kubota
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
- Yutaka Seino Distinguished Center for Diabetes Research, Kansai Electric Power Medical Research Institute, Kyoto, Japan
| | - Tokuyuki Hirose
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takuo Hirota
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yukio Horikawa
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Daisuke Yabe
- Department of Diabetes, Endocrinology and Metabolism/Department of Rheumatology and Clinical Immunology, Gifu University Graduate School of Medicine, Gifu, Japan
- Yutaka Seino Distinguished Center for Diabetes Research, Kansai Electric Power Medical Research Institute, Kyoto, Japan
- Center for One Medicine Innovative Translational Research, Gifu University Institute for Advanced Study, Gifu, Japan
- Center for Healthcare Information Technology, Tokai National Higher Education and Research System, Nagoya, Japan
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Chen J, Katada Y, Okimura K, Yamaguchi T, Guh YJ, Nakayama T, Maruyama M, Furukawa Y, Nakane Y, Yamamoto N, Sato Y, Ando H, Sugimura A, Tabata K, Sato A, Yoshimura T. Prostaglandin E 2 synchronizes lunar-regulated beach spawning in grass puffers. Curr Biol 2022; 32:4881-4889.e5. [PMID: 36306789 DOI: 10.1016/j.cub.2022.09.062] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 08/11/2022] [Accepted: 09/29/2022] [Indexed: 11/22/2022]
Abstract
Many organisms living along the coastlines synchronize their reproduction with the lunar cycle. At the time of spring tide, thousands of grass puffers (Takifugu alboplumbeus) aggregate and vigorously tremble their bodies at the water's edge to spawn. To understand the mechanisms underlying this spectacular semilunar beach spawning, we collected the hypothalamus and pituitary from male grass puffers every week for 2 months. RNA sequencing (RNA-seq) analysis identified 125 semilunar genes, including genes crucial for reproduction (e.g., gonadotropin-releasing hormone 1 [gnrh1], luteinizing hormone β subunit [lhb]) and receptors for pheromone prostaglandin E (PGE). PGE2 is secreted into the seawater during the spawning, and its administration activates olfactory sensory neurons and triggers trembling behavior of surrounding individuals. These results suggest that PGE2 synchronizes lunar-regulated beach-spawning behavior in grass puffers. To further explore the mechanism that regulates the lunar-synchronized transcription of semilunar genes, we searched for semilunar transcription factors. Spatial transcriptomics and multiplex fluorescent in situ hybridization showed co-localization of the semilunar transcription factor CCAAT/enhancer-binding protein δ (cebpd) and gnrh1, and cebpd induced the promoter activity of gnrh1. Taken together, our study demonstrates semilunar genes that mediate lunar-synchronized beach-spawning behavior. VIDEO ABSTRACT.
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Affiliation(s)
- Junfeng Chen
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Yuma Katada
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Kousuke Okimura
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Taiki Yamaguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Ying-Jey Guh
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Tomoya Nakayama
- Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Michiyo Maruyama
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Yuko Furukawa
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Yusuke Nakane
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Naoyuki Yamamoto
- Laboratory of Fish Biology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Yoshikatsu Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, 87 Tassha, Sado 952-2135, Niigata, Japan
| | - Asako Sugimura
- Toyota Boshoku Corporation, 1-1 Toyoda-cho, Kariya 448-8651, Aichi, Japan
| | - Kazufumi Tabata
- Toyota Boshoku Corporation, 1-1 Toyoda-cho, Kariya 448-8651, Aichi, Japan
| | - Ayato Sato
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan
| | - Takashi Yoshimura
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan; Laboratory of Animal Integrative Physiology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Aichi, Japan.
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Ando H, Yamaji K, Kohsaka S, Ishii H, Sakakura K, Goto R, Nakano Y, Takashima H, Ikari Y, Amano T. Cardiopulmonary arrest and in-hospital outcomes in young patients with acute myocardial infarction: insights from the Japanese nationwide registry. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1307] [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: 11/12/2022] Open
Abstract
Abstract
Background
Cardiopulmonary arrest (CPA) is the most serious presentation of acute myocardial infarction (AMI). However, the frequency and prognostic impact of CPA in young patients with AMI have been still unclear.
Objectives
This study aimed to characterize AMI in young patients who underwent primary percutaneous coronary intervention using large-scale nationwide all-comer registry data in Japan (J-PCI registry).
Methods
Data on risk factor profiles, clinical features, post-procedural complications, and in-hospital outcomes were reviewed within the J-PCI registry between 2014 and 2018.
Results
Among 213,297 patients with AMI, 23,985 (11.2%) were young (age, 20–49 years). Compared with the older group (age, 50–79 years; n=189,312), the young group included a higher number of men, smokers, patients with dyslipidemia, and patients with single-vessel disease, and a lower number of patients with hypertension and diabetes. Despite favorable clinical profiles, younger age was associated with a higher rate of presentation with CPA (Figure 1). Further, concomitant CPA was strongly associated with in-hospital mortality in the young group (Table 1).
Conclusions
Young patients with AMI presented a higher risk of CPA than older patients, which was strongly associated with in-hospital mortality.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): JSPS KAKENHI
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Affiliation(s)
- H Ando
- Aichi Medical Univeristy , Nagakute , Japan
| | - K Yamaji
- Kyoto University Graduate School of Medicine , Kyoto , Japan
| | - S Kohsaka
- Keio University School of Medicine , Tokyo , Japan
| | - H Ishii
- Gunma University Graduate School of Medicine , Gunma , Japan
| | - K Sakakura
- Jichi Medical University Saitama Medical Center , Saitama , Japan
| | - R Goto
- Aichi Medical Univeristy , Nagakute , Japan
| | - Y Nakano
- Aichi Medical Univeristy , Nagakute , Japan
| | | | - Y Ikari
- Tokai University Hospital , Isehara , Japan
| | - T Amano
- Aichi Medical Univeristy , Nagakute , Japan
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Zahangir MM, Rahman ML, Ando H. Anomalous Temperature Interdicts the Reproductive Activity in Fish: Neuroendocrine Mechanisms of Reproductive Function in Response to Water Temperature. Front Physiol 2022; 13:902257. [PMID: 35685278 PMCID: PMC9171195 DOI: 10.3389/fphys.2022.902257] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 04/21/2022] [Indexed: 01/30/2023] Open
Abstract
Fish are poikilotherm and small changes in water temperature can greatly affect physiological processes including reproduction, which is regulated by complex neuroendocrine mechanisms that respond to climatic events. This review provides evidence that anomalous high and low temperature may directly affect reproduction in fish by suppressing the expression of genes in the reproductive neuroendocrine system. The grass puffer, Takifugu alboplumbeus, is an excellent animal model for studying the thermal regulation of reproduction, for they exhibit periodic spawning activities, which are synchronized with seasonal, lunar and daily cycles. In the grass puffer, the expression of the genes encoding gonadotropin-releasing hormone (GnRH) 1, kisspeptin, gonadotropin-inhibitory hormone (GnIH) and their receptors were markedly suppressed in the diencephalon of fish exposed to high temperature (28°C) when compared to normal temperature (21°C), followed by the decrease in the pituitary mRNA levels for follicle-stimulating hormone (FSH), luteinizing hormone (LH) and growth hormone (GH). On the other hand, the exposure to low temperature (14°C) also inhibited the expression of gnrh1, kiss2, gnih and their receptor genes in the brain and fshb, lhb, gh and prl in the pituitary. Taken together, it is plausible that anomalous high and low temperature may be a proximate driver of termination of reproduction by suppressing the activity of the reproductive GnRH/kisspeptin/GnIH system, possibly through direct action of temperature signals at transcription level.
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Affiliation(s)
- Md. Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Japan
- Department of Fish Biology and Biotechnology, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, Bangladesh
| | - Mohammad Lutfar Rahman
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Japan
- Department of Genetics and Fish Breeding, Faculty of Fisheries, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Japan
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Zahangir MM, Shahjahan M, Ando H. Kisspeptin Exhibits Stimulatory Effects on Expression of the Genes for Kisspeptin Receptor, GnRH1 and GTH Subunits in a Gonadal Stage-Dependent Manner in the Grass Puffer, a Semilunar-Synchronized Spawner. Front Endocrinol (Lausanne) 2022; 13:917258. [PMID: 35909525 PMCID: PMC9334799 DOI: 10.3389/fendo.2022.917258] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Kisspeptin has an important role in the regulation of reproduction by directly stimulating the secretion of gonadotropin-releasing hormone (GnRH) in mammals. In non-mammalian vertebrates, there are multiple kisspeptins (Kiss1 and Kiss2) and kisspeptin receptor types, and the two kisspeptins in teleosts have different effects depending on fish species and reproductive stages, serving reproductive and non-reproductive functions. In the grass puffer, Takifugu alboplumbeus, which has only a single pair of kiss2 and kissr2, both genes display seasonal, diurnal, and circadian oscillations in expression in association with the periodic changes in reproductive functions. To elucidate the role of kisspeptin in this species, homologous kisspeptin peptide (gpKiss2) was administered at different reproductive stages (immature, mature and regressed) and the expression levels of the genes that constitute hypothalamo-pituitary-gonadal axis were examined in male grass puffer. gpKiss2 significantly elevated the expression levels of kissr2 and gnrh1 in the brain and kissr2, fshb and lhb in the pituitary of the immature and mature fish. No noticeable effect was observed for kiss2, gnih, gnihr, gnrh2 and gnrh3 in the brain and gpa in the pituitary. In the regressed fish, gpKiss2 was ineffective in stimulating the expression of the gnrh1 and GTH subunit genes, while it stimulated and downregulated the kissr2 expression in the brain and pituitary, respectively. The present results indicate that Kiss2 has a stimulatory role in the expression of GnRH1/GTH subunit genes by upregulating the kissr2 expression in the brain and pituitary at both immature and mature stages, but this role is mostly ineffective at regressed stage in the grass puffer.
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Affiliation(s)
- Md. Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Niigata, Japan
| | - Md. Shahjahan
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Niigata, Japan
- *Correspondence: Hironori Ando,
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Ohashi H, Takashima H, Nawano T, Ando H, Nakano Y, Sakurai S, Suzuki A, Suzuki W, Amano T. Differential impact of renal function on the diagnostic performance of resting full-cycle ratio as non-hyperemic physiological assessment. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1403] [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
Fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in daily clinical practice. Recently, the resting full-cycle ratio (RFR) was Previous studies showed the better diagnostic performance of RFR comparing with FFR. It is well known that patients with chronic kidney disease (CKD) have poor prognosis. Therefore, we should carefully assess the functional lesion severity in CKD patients. However, it is unclear whether the diagnostic performance of RFR for detecting functional ischemia is similar regardless of the degree of renal function. The aim of this study is to compare the diagnostic performance of RFR based on renal function.
Method
This study was a prospectively enrolled observational study. A total of 265 consecutive patients with 373 intermediate lesions were enrolled in this study. There were classified into three groups according to renal function (Group 1: eGFR ≥60 mL/min/1.73m2; Group 2: 30 mL/min/1.73m2 ≤eGFR <60 mL/min/1.73m2; Group 3: eGFR <30mL/min/1.73m2). The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). The discordance between FFR and RFR were assessed the data using known cutoffs for FFR (≤0.80) and RFR (≤0.89).
Results
Of 373 lesions, the median age was 70.1±11.0 years. Functional significance was observed in 153 lesions (41.0%) of all lesions. RFR showed a significant correlation with FFR in each group (Group 1; r2=0.63 [p<0.001], Group 2: r2=0.67 [p<0.001], Group 3: r2=0.51 [p<0.001], respectively). The ROC curve analysis of RFR showed differential results for predicting functional significance (Group 1: AUC 0.88, cut-off value 0.91; Group 2: AUC 0.88, cut-off value 0.89; Group 3: AUC 0.81, cut-off value 0.83; respectively) in each group. The prevalence of discordant between RFR and FFR was significantly different among 3 groups (Group 1: 16.5%, Group 2: 19.4%, Group 3: 25.0%, respectively, p<0.05 for among 3 groups).
Conclusion
The diagnostic performance of RFR was different based on renal function. During RFR acquisition, the degree of renal function could influence concordance with FFR, and should be taken into account when interpreting RFR.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- H Ohashi
- Aichi medical university, Aichi, Japan
| | | | - T Nawano
- Aichi medical university, Aichi, Japan
| | - H Ando
- Aichi medical university, Aichi, Japan
| | - Y Nakano
- Aichi medical university, Aichi, Japan
| | - S Sakurai
- Aichi medical university, Aichi, Japan
| | - A Suzuki
- Aichi medical university, Aichi, Japan
| | - W Suzuki
- Aichi medical university, Aichi, Japan
| | - T Amano
- Aichi medical university, Aichi, Japan
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Shahjahan M, Zahangir MM, Islam SMM, Ashaf-Ud-Doulah M, Ando H. Higher acclimation temperature affects growth of rohu (Labeorohita) through suppression of GH and IGFs genes expression actuating stress response. J Therm Biol 2021; 100:103032. [PMID: 34503781 DOI: 10.1016/j.jtherbio.2021.103032] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/24/2021] [Accepted: 06/13/2021] [Indexed: 11/28/2022]
Abstract
Water temperature alone can affect the growth, metabolic rates and physiological responses of aquatic organisms. Our earlier study reported that higher temperature affects cellular and hemato-biochemical responses in rohu, Labeo rohita. In this backdrop, the present study assessed the effect of higher acclimation temperature on the regulatory mechanisms of growth and stress responses of juvenile L. rohita acclimatized in three temperature conditions (30 °C, 33 °C, and 36 °C) for a period of 30 days. The relative expression of genes for growth hormone (GH), insulin-like growth factors (IGF-1 and IGF-2) and heat shock proteins (hsp70 and hsp90) were measured by real-time quantitative PCR. The results revealed that the highest acclimation temperature (36 °C) significantly decreased the weight gain (WG) and specific growth rate (SGR), and increased the feed conversion ratio (FCR) compared to 30 °C (control), while increased WG, SGR and lowered FCR were observed in fish reared at the intermediate temperature (33 °C) compared to 30 °C. Similarly, the GH gene expression in the pituitary was significantly decreased and increased at 36 °C and 33 °C, respectively as compared to 30 °C. A significantly lower expression of IGF-1 and IGF-2, and higher expression of hsp70 and hsp90 were observed in the liver of fish at 36 °C. The results of the present study indicate that although slightly elevated temperature promotes the growth of juvenile L. rohita, the higher acclimation temperature may induce stress response and impair growth performance by suppressing GH/IGF system.
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Affiliation(s)
- Md Shahjahan
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
| | - Md Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata, 952-2135, Japan; Department of Fish Biology and Biotechnology, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, 4225, Bangladesh
| | - S M Majharul Islam
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Mohammad Ashaf-Ud-Doulah
- Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata, 952-2135, Japan
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Kitahashi T, Kurokawa D, Ogiso S, Suzuki N, Ando H. Light-induced and circadian expressions of melanopsin genes opn4xa and opn4xb in the eyes of juvenile grass puffer Takifugu alboplumbeus. Fish Physiol Biochem 2021; 47:191-202. [PMID: 33559801 DOI: 10.1007/s10695-020-00901-w] [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] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Animals regulate a variety of aspects of physiology according to environmental light conditions via nonvisual opsins such as melanopsin. In order to study photic regulation of fish physiology, expression changes of the genes for melanopsin (opn4xa and opn4xb) and effects of light on them were examined in juvenile grass puffer Takifugu alboplumbeus using quantitative real-time PCR. In the brain of juvenile fish, no significant diurnal nor circadian changes were observed in opn4x mRNA levels. On the other hand, in the eyes, the mRNA level of opn4xa showed a significant diurnal rhythm with a peak at Zeitgeber time (ZT) 4, while no apparent circadian changes were observed. The mRNA level of opn4xb in the eyes showed a diurnal change similar to that of opn4xa, while it showed a significant circadian change. Furthermore, continuous exposure to light during a subjective night significantly increased the mRNA levels of opn4xa in the eyes at ZT24, suggesting that light induces gene expression of opn4xa in the eyes and that the induction occurs only during the night-day transition period. These results suggest that Opn4xa and Opn4xb play differential roles in the eyes of juvenile grass puffer to mediate the physiological effects of environmental light information.
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Affiliation(s)
- Takashi Kitahashi
- Sado Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, 87 Tassha, Sado-shi, Niigata, 952-2135, Japan.
- , Toda-cho 5-33-17, Moriguchi-shi, 570-0014, Osaka, Japan.
| | - Daisuke Kurokawa
- Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo, 1024 Koajiro, Misaki, Miura, Kanagawa, 238-0225, Japan
| | - Shouzo Ogiso
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, 4-1 Mu, Ogi, Noto-cho, Ishikawa, 927-0553, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, 4-1 Mu, Ogi, Noto-cho, Ishikawa, 927-0553, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, 87 Tassha, Sado-shi, Niigata, 952-2135, Japan
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10
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Zahangir MM, Matsubara H, Ogiso S, Suzuki N, Ueda H, Ando H. Expression dynamics of the genes for the hypothalamo-pituitary-gonadal axis in tiger puffer (Takifugu rubripes) at different reproductive stages. Gen Comp Endocrinol 2021; 301:113660. [PMID: 33189658 DOI: 10.1016/j.ygcen.2020.113660] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 12/27/2022]
Abstract
Tiger puffer, Takifugu rubripes, a commercially important long-distance migratory fish, return to specific spawning grounds for reproduction. To clarify reproductive neuroendocrine system of the tiger puffer, the changes in the expression levels of the genes encoding three gonadotropin-releasing hormones (GnRHs), gonadotropin-inhibitory hormone (GnIH), GnIH receptor (GnIH-R), kisspeptin and kisspeptin receptor in the brain and gonadotropin (GTH) subunits, growth hormone (GH) and prolactin (PRL) in the pituitary were examined in the tiger puffer captured in the wild at different reproductive stages, namely immature and mature fish of both sexes, and post-ovulatory females that were obtained by hormonal treatment. The amounts of three gnrh mRNAs, gnih, gnih-r, fshb and lhb were substantially increased in the mature fish compared to the immature fish, especially in the females, and these augmented expressions were drastically decreased in the post-ovulatory females. gh expression showed a slight increase in the mature males. In contrast, kiss2, kiss2r and prl did not show significant changes in the males but significantly decreased in the post-ovulatory females. The present results demonstrate the expression dynamics of the hypothalamo-pituitary-gonadal axis genes associated with the reproductive conditions and the possible involvement of the GnRH/GnIH/GTH system in the regulation of the sexual maturation and spawning in the wild tiger puffer.
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Affiliation(s)
- Md Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
| | - Hajime Matsubara
- Noto Center for Fisheries Science and Technology, Kanazawa University, Noto-cho, Ishikawa 927-0552, Japan
| | - Shouzo Ogiso
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Noto-cho, Ishikawa 927-0553, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Noto-cho, Ishikawa 927-0553, Japan
| | - Hiroshi Ueda
- Hokkaido University and Hokkaido Aquaculture Promotion Corporation, Sapporo 003-0874, Japan
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan.
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11
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Nakano Y, Onishi T, Suzuki M, Niwa T, Mukai K, Ando H, Ohashi H, Waseda K, Takashima H, Amano T. Clinical impact of triglyceride deposit cardiomyovasculopathy, coronary atherosclerosis with triglyceride deposition, on vascular failure after drug-eluting stent implantation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1334] [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: 11/14/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel cardiovascular disorder, encoded as orphan disease in Europe in 2019, characterized by excessive accumulation of triglyceride in vascular smooth muscle cells, leading to coronary artery disease (CAD). However, there is no data about impact of TGCV on vascular failure after coronary stent implantation.
Purpose
To assess impact of TGCV on the outcome following coronary stent implantation in CAD patients with diabetes mellitus (DM) as Study 1, and chronic hemodialysis as Study 2.
Methods
This is multicenter retrospective estimation consisting of two studies.
Study 1) Among 526 consecutive patients suspected of having CAD who underwent coronary angiography (CAG) and iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy, a tracer for the diagnosis of TGCV, data from 81 patients with DM were analyzed.
The patients were divided into two groups; TGCV (n=7) or non-TGCV (n=74). All patients were implanted with a second-generation DES and underwent follow-up CAG. Binary restenosis (ISR), defined as angiographic luminal diameter >50% by quantitative coronary angiography, in-stent late loss were assessed in 15 stents of TGCV patients and 111 stents of non-TGCV patients.
Study 2) Similarly, among 88 chronic hemodialysis patients, ISR and in-stent late loss were assessed in 12 stents of 9 TGCV patients and 21 stents of 17 non-TGCV patients.
Results
Study 1) There were no significant differences in baseline characteristics between the two groups. In-stent late loss was greater in TGCV group than in non-TGCV group (0.91mm [0.27, 2.39] vs. 0.15mm [0.03, 0.35]; p<0.001), resulting in greater incidence of ISR in TGCV group than in non-TGCV group (46.7% vs. 9.0%; p<0.001). Multivariable logistic analysis revealed TGCV to be an independent predictor for vascular failure after DES implantation in patients with DM.
Study 2) Similarly, in-stent late loss and incidence of ISR were greater in TGCV group than in non-TGCV group (1.20±0.99mm vs. 0.50±0.70, p=0.02; 58.3% vs. 9.5%, p=0.002, respectively). TGCV was an independent predictor for vascular failure after DES implantation in chronic hemodialysis patients.
Conclusion
Apart from existing risk factors such as DM and hemodialysis, TGCV could contribute to a novel risk factor for vascular failure, even in the second-generation DES era.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - T Onishi
- Aichi Medical University, Nagakute, Japan
| | - M Suzuki
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - K Mukai
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | | | - T Amano
- Aichi Medical University, Nagakute, Japan
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12
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Takashima H, Ohashi H, Ando H, Suzuki A, Sakurai S, Nakano Y, Sawada H, Fujimoto M, Naito K, Tanabe S, Suzuki W, Waseda K, Amano T. Differential impact of target vessel on the diagnostic performance of resting full-cycle ratio as non-hyperemic physiological assessment. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2480] [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
Recently, wire-based resting indices have been recognized as gold standard for evaluating physiological lesion assessment. The resting full-cycle ratio (RFR) is a unique resting index which is calculated as the point of absolutely lowest distal pressure to aortic pressure during entire cardiac cycle. It is unclear whether the diagnostic performance of RFR for detecting functional coronary artery stenosis is similar in each coronary artery. The aim of this study is to compare the diagnostic performance of RFR based on target coronary vessel.
Method
This study was a prospectively enrolled observational study. A total of 156 consecutive patients with 220 intermediate lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.0±0.7mm, 45±13%, 13.0±8.8mm, 0.90±0.09, and 0.82±0.10, respectively. Functional significance was observed in 88 lesions (40%) of all lesions. RFR showed a significant correlation with FFR in overall lesions (r=0.774, p<0.001). The ROC curve analysis of RFR showed good accuracy for predicting functional significance (AUC 0.87, diagnostic accuracy 81%) in all subjects. Regarding each target vessel, there were similar and significant positive correlation between RFR and FFR (LAD; r=0.733, p<0.001, LCX; r=0.771, p<0.001, RCA; r=0.769, p<0.001, respectively). The prevalence of discordant between RFR and FFR was significantly different among 3 vessels (LAD 26%, LCX 12%, RCA 13%, respectively, p<0.05 for among 3 groups). Regarding the comparison of ROC curves according to lesion location, AUC was significantly lower in LAD than in LCX and RCA (LAD 0.780, LCX 0.947, RCA 0.926, p<0.01 for LAD compared to LCX, p<0.01 for LAD compared to RCA, respectively). Furthermore, the diagnostic accuracy was significantly different according to target vessel (LAD 74%, LCX 88%, RCA 87%, respectively, p<0.05 for among 3 vessels).
Conclusion
RFR demonstrated better diagnostic accuracy for evaluating functional lesion severity. The diagnostic performance of RFR was different based on target vessel. RFR is a unique and useful resting index, and it may detect functionally significant coronary stenosis that cannot be detected with other resting indices in daily practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - K Naito
- Aichi Medical University, Nagakute, Japan
| | - S Tanabe
- Aichi Medical University, Nagakute, Japan
| | - W Suzuki
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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13
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Ohashi H, Takashima H, Ando H, Suzuki A, Sakurai S, Nakano Y, Sawada H, Fujimoto M, Suzuki W, Waseda K, Amano T. Discordance predictor between fractional flow reserve and resting full-cycle ratio in clinical characteristics. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2481] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
Fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in daily clinical practice. Recently, the resting full-cycle ratio (RFR) which was newly developed resting indices was launched. Unlike other resting indices evaluated in diastolic phase, RFR is evaluated during entire cardiac phase. Previous studies showed discordance predictors between FFR and instantaneous wave-free ratio. However, it is previously unreported what predictor cause discordant outcome between FFR and RFR.
Purpose
The purpose of this study was to evaluate clinical predictors of discordance between FFR and RFR.
Methods
A total of 156 patients with 220 lesions were prospectively enrolled in this study. RFR was evaluated before inducing hyperemia. FFR was measured after intravenous adenosine triphosphate administration (180 mcg/kg/min). According to FFR and RFR values, the patients and lesions were classified into 4 groups: Concordant negative (Group-1 [n=114]: FFR >0.80, RFR >0.89); negative FFR and positive RFR (Group-2 [n=18]: FFR >0.80, RFR ≤0.89); positive FFR and negative RFR (Group-3 [n=25]: FFR ≤0.80, RFR >0.89); Concordant positive (Group-4 [n=63]: FFR ≤0.80, RFR ≤0.89). Among them, discordance predictors with clinical characteristics between RFR and FFR were compared using by two separate logistic regression analyses. (Group-1 vs. Group-2, Group-3 vs. Group-4, respectively). Age, sex and those predictors with a p value ≤0.10 were included in a multivariate regression analysis using by forward stepwise selection to identify independent predictors of discordance.
Results
On multiple regression analysis, hemodialysis (HD) (OR:6.072 [1.090–33.836]), peripheral artery disease (PAD) (OR:9.053 [1.776–46.162]) and left anterior descending artery (LAD) (OR:9.264 [2.092–41.031]) were significantly associated with positive RFR among negative FFR groups (Groupe 2 discordance). Conversely, diabetes mellitus (DM) (OR:0.212 [0.062–0.721]) and Hb (OR:1.480 [1.102–1.987]) were significantly associated with negative RFR among positive FFR groups (Groupe 3 discordance)
Conclusions
Since the clinical characteristics with HD, PAD, LAD, DM and Hb may influence concordant with FFR during RFR evaluation, it should be considered when interpreting RFR.
Distribution and independent predictors
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- H Ohashi
- Aichi medical university, Aichi, Japan
| | | | - H Ando
- Aichi medical university, Aichi, Japan
| | - A Suzuki
- Aichi medical university, Aichi, Japan
| | - S Sakurai
- Aichi medical university, Aichi, Japan
| | - Y Nakano
- Aichi medical university, Aichi, Japan
| | - H Sawada
- Aichi medical university, Aichi, Japan
| | | | - W Suzuki
- Aichi medical university, Aichi, Japan
| | - K Waseda
- Aichi medical university, Aichi, Japan
| | - T Amano
- Aichi medical university, Aichi, Japan
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14
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Takashima H, Ohashi H, Ando H, Sakurai S, Nakano Y, Suzuki A, Sawada H, Fujimoto M, Waseda K, Amano T. Diagnostic feasibility of resting full-cycle ratio between systole and diastole to assess functional lesion severity of intermediate coronary artery stenosis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2478] [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: 11/14/2022] Open
Abstract
Abstract
Background
Recently, non-hyperemic physiologic indices have become widespread for evaluating physiological lesion assessment. The resting full-cycle ratio (RFR) is a unique non-hyperemic index which is calculated as the point of absolutely lowest distal pressure to aortic pressure during entire cardiac cycle. It is unclear whether RFR may detect functionally significant coronary stenosis that cannot be detected with other resting indices due to differences in the cardiac cycle. The aim of this study is to compare the diagnostic performance of RFR based on cardiac cycle.
Method
This study was a prospectively enrolled observational study. A total of 156 consecutive patients with 220 intermediate lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.0±0.7mm, 45±13%, 13.0±8.8mm, 0.90±0.09, and 0.82±0.10, respectively. Functional significance was observed in 88 lesions (40%) of all lesions. RFR systole was observed in 24 lesions (10.9%). Regarding to the coronary lesions, RFR systole was more frequent in non-LAD (LAD; 4.2%, left circumflex artery (LCX); 9.8%, and right coronary artery (RCA); 30.4%, respectively, p<0.018). RFR showed a significant correlation with FFR in both systole and diastole (R = 0.918, p<0.001, R = 0.733, p<0.001, respectively). The ROC curve analysis showed similar agreement in both systole and diastole (AUC: 0.881, p<0.001, AUC: 0.864, p<0.001, respectively). RFR provided a good diagnostic accuracy and no difference in both systole and diastole (79.6% and 87.5%, respectively, p=0.58).
Conclusion
RFR is feasible and reliable non-hyperemic index regardless of the difference of cardiac cycle to evaluate physiological lesion severity in daily practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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15
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Rahman ML, Zahangir MM, Kitahashi T, Shahjahan M, Ando H. Effects of high and low temperature on expression of GnIH, GnIH receptor, GH and PRL genes in the male grass puffer during breeding season. Gen Comp Endocrinol 2019; 282:113200. [PMID: 31199926 DOI: 10.1016/j.ygcen.2019.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/29/2019] [Accepted: 06/10/2019] [Indexed: 01/19/2023]
Abstract
Gonadotropin-inhibitory hormone (GnIH) is a multifunctional hypophysiotropic neurohormone and has a stimulatory role in the control of reproduction in the grass puffer. To clarify the neuroendocrine mechanisms underlying the effect of changes in water temperature on reproduction in fish, we previously revealed that, in parallel to gonadal regression, both low and high temperature significantly decreased the expressions of the genes encoding kisspeptin (kiss2), kisspeptin receptor (kiss2r), gonadotropin-releasing hormone 1 (gnrh1) in the brain and gonadotropin (GTH) subunits (fshb and lhb) in the pituitary of sexually mature male grass puffer. In this study, we examined the changes in expression of gnih and GnIH receptor gene (gnihr) in the brain and pituitary along with the genes for growth hormone (gh) and prolactin (prl) in the pituitary of male grass puffer exposed to low temperature (14 °C), normal temperature (21 °C, as initial control) and high temperature (28 °C) conditions for 7 days. The levels of gnih and gnihr mRNAs were significantly decreased in both low and high temperature conditions compared to normal temperature in the brain and pituitary. Similarly, the gh mRNA levels were significantly decreased in both low and high temperature conditions. The prl mRNAs showed no significant changes at high temperature, whereas drastically decreased at low temperature possibly by dysfunctional cold stress. Taken together, the present results suggest that, in addition to the inhibitory effect of temperature changes on the Kiss2/GnRH1/GTH system, the suppression of GnIH/GH system may also be involved in the termination of reproduction by high temperature at the end of breeding season.
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Affiliation(s)
- Mohammad Lutfar Rahman
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan; Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md Mahiuddin Zahangir
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan; Department of Fish Biology and Biotechnology, Chittagong Veterinary and Animal Sciences University, Chittagong 4225, Bangladesh
| | - Takashi Kitahashi
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan
| | - Md Shahjahan
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Hironori Ando
- Marine Biological Station, Sado Island Center for Ecological Sustainability, Niigata University, Sado, Niigata 952-2135, Japan.
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16
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Nakano Y, Onishi T, Niwa T, Takashima H, Shimoda M, Ohashi H, Ando H, Waseda K, Amano T. P3638Triglyceride deposite cardiomyovasculopathy latency in population with coronary artery disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0495] [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: 11/12/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel clinical concept found among Japanese cardiac transplant recipients in 2008 that the abnormal intracellular triglyceride (TG) metabolism results in the ectopic accumulation of TG in vascular smooth muscle cells and cardiomyocytes, leading to diffuse narrowing coronary artery disease (CAD) and heart failure. TGCV is estimated to affect almost forty to fifty-thousand people in Japan, but there is no real-world date about the prevalence or latency.
Purpose
To evaluate TGCV latency in population with CAD, especially requiring urgent coronary angiography as Study 1, and chronic hemodialysis as Study 2.
Methods
This is multicenter retrospective estimation consisting of two studies.
Study 1) From 2012 to 2017, consecutive 400 patients of unstable angina or acute myocardial infarction who underwent urgent coronary angiography (CAG) and following iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy, a tracer for the diagnosis of TGCV, were enrolled.
Study 2) From 2011 to 2017, 88 chronic hemodialysis patients who underwent planed CAG and BMIPP scintigraphy for detection of ischemic heart disease were enrolled.
TGCV was diagnosed based on the latest diagnostic criteria for TGCV. The criteria include two major items (2 points each: BMIPP scintigraphy Wash-Out Rare <10%, Diffuse narrowing coronary arteries) and two minor items (1 point each: Jordans' anomaly in peripheral blood smear, Diabetes). Four points or more and three points indicated definite and probable TGCV, respectively. Only Items other than Jordans' anomaly were available for the diagnosis of TGCV because of retrospective nature. We evaluated the latent rate of definite and probable TGCV.
Results
Study 1) Figure (left) demonstrates the result of Study 1. Definitive TGCV patients were 14 patients, accounting for 3.5% of total 400 patients, and probable TGCV patients were 39 patients, accounting for 9.8% of all. Total 53 definitive and probable TGCV patients accounted for 13.3% of all. Annual average latency were 3.6±1.7% as definitive, 10.0±5.5% as probable and 13.6±6.6% as definitive and probable TGCV, respectively.
Study 2) Figure (right) demonstrates the result of Study 2. Definitive TGCV patients were 17 patients, accounting for 19.3% of total 88 hemodialysis patients, and probable TGCV patients were 22 patients, accounting for 25.0% of all. Total 39 definitive and probable TGCV patients accounted for 44.3% of all. Annual average latency of definitive TGCV was 19.3±13.4%. Of the 17 definitive TGCV patients, 9 patients were hemodialysis patients with diabetes.
Figure 1
Conclusions
TGCV might be latent with a probability of 3.6±1.7% per year in patients with unstable angina or acute myocardial infarction, and with a probability of 19.3±13.4% per year in chronic hemodialysis patients suspected of ischemic heart disease.
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - T Onishi
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | | | - M Shimoda
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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17
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Ikegame M, Hattori A, Tabata MJ, Kitamura K, Tabuchi Y, Furusawa Y, Maruyama Y, Yamamoto T, Sekiguchi T, Matsuoka R, Hanmoto T, Ikari T, Endo M, Omori K, Nakano M, Yashima S, Ejiri S, Taya T, Nakashima H, Shimizu N, Nakamura M, Kondo T, Hayakawa K, Takasaki I, Kaminishi A, Akatsuka R, Sasayama Y, Nishiuchi T, Nara M, Iseki H, Chowdhury VS, Wada S, Ijiri K, Takeuchi T, Suzuki T, Ando H, Matsuda K, Somei M, Mishima H, Mikuni‐Takagaki Y, Funahashi H, Takahashi A, Watanabe Y, Maeda M, Uchida H, Hayashi A, Kambegawa A, Seki A, Yano S, Shimazu T, Suzuki H, Hirayama J, Suzuki N. Melatonin is a potential drug for the prevention of bone loss during space flight. J Pineal Res 2019; 67:e12594. [PMID: 31286565 PMCID: PMC6771646 DOI: 10.1111/jpi.12594] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 06/19/2019] [Accepted: 06/19/2019] [Indexed: 12/30/2022]
Abstract
Astronauts experience osteoporosis-like loss of bone mass because of microgravity conditions during space flight. To prevent bone loss, they need a riskless and antiresorptive drug. Melatonin is reported to suppress osteoclast function. However, no studies have examined the effects of melatonin on bone metabolism under microgravity conditions. We used goldfish scales as a bone model of coexisting osteoclasts and osteoblasts and demonstrated that mRNA expression level of acetylserotonin O-methyltransferase, an enzyme essential for melatonin synthesis, decreased significantly under microgravity. During space flight, microgravity stimulated osteoclastic activity and significantly increased gene expression for osteoclast differentiation and activation. Melatonin treatment significantly stimulated Calcitonin (an osteoclast-inhibiting hormone) mRNA expression and decreased the mRNA expression of receptor activator of nuclear factor κB ligand (a promoter of osteoclastogenesis), which coincided with suppressed gene expression levels for osteoclast functions. This is the first study to report the inhibitory effect of melatonin on osteoclastic activation by microgravity. We also observed a novel action pathway of melatonin on osteoclasts via an increase in CALCITONIN secretion. Melatonin could be the source of a potential novel drug to prevent bone loss during space flight.
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Affiliation(s)
- Mika Ikegame
- Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama UniversityOkayamaJapan
| | - Atsuhiko Hattori
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Makoto J. Tabata
- Graduate School of Tokyo Medical and Dental UniversityBunkyo‐kuJapan
| | - Kei‐ichiro Kitamura
- Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health SciencesKanazawa UniversityKodatsunoJapan
| | | | - Yukihiro Furusawa
- Department of Liberal Arts and SciencesToyama Prefectural UniversityToyamaJapan
| | - Yusuke Maruyama
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Tatsuki Yamamoto
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Toshio Sekiguchi
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Risa Matsuoka
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Taizo Hanmoto
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Takahiro Ikari
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Masato Endo
- Department of Marine BiosciencesTokyo University of Marine Science and TechnologyMinato‐kuJapan
| | | | - Masaki Nakano
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Sayaka Yashima
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Sadakazu Ejiri
- Division of Oral Structure, Function and DevelopmentAsahi University School of DentistryMizuhoJapan
| | | | - Hiroshi Nakashima
- Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health SciencesKanazawa UniversityKodatsunoJapan
| | - Nobuaki Shimizu
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Masahisa Nakamura
- Faculty of Education and Integrated Arts and SciencesWaseda UniversityShinjuku‐kuJapan
| | - Takashi Kondo
- Graduate School of Medicine and Pharmaceutical SciencesUniversity of ToyamaToyamaJapan
| | - Kazuichi Hayakawa
- Low Level Radioactivity Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNomiJapan
| | - Ichiro Takasaki
- Graduate School of Science and EngineeringUniversity of ToyamaToyamaJapan
| | - Atsushi Kaminishi
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Ryosuke Akatsuka
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Yuichi Sasayama
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Takumi Nishiuchi
- Institute for Gene Research, Advanced Science Research CenterKanazawa UniversityKanazawaJapan
| | - Masayuki Nara
- College of Liberal Arts and SciencesTokyo Medical and Dental UniversityIchikawaJapan
| | - Hachiro Iseki
- Graduate School of Tokyo Medical and Dental UniversityBunkyo‐kuJapan
| | | | | | - Kenichi Ijiri
- Radioisotope CenterUniversity of TokyoBunkyo‐kuJapan
| | - Toshio Takeuchi
- Department of Marine BiosciencesTokyo University of Marine Science and TechnologyMinato‐kuJapan
| | - Tohru Suzuki
- Graduate School of Agricultural ScienceTohoku UniversitySendaiJapan
| | - Hironori Ando
- Marine Biological Station, Sado Center for Ecological SustainabilityNiigata UniversitySadoJapan
| | - Kouhei Matsuda
- Laboratory of Regulatory Biology, Graduate School of Science and EngineeringUniversity of ToyamaToyamaJapan
| | - Masanori Somei
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
| | - Hiroyuki Mishima
- Department of Dental EngineeringTsurumi University School of Dental MedicineYokohamaJapan
| | | | - Hisayuki Funahashi
- Department of Physical Therapy, Faculty of Makuhari Human CareTohto UniversityMihama‐kuJapan
| | | | - Yoshinari Watanabe
- Organization of Frontier Science and InnovationKanazawa UniversityKanazawaJapan
| | | | | | | | | | | | | | | | | | - Jun Hirayama
- Department of Clinical Engineering, Faculty of Health SciencesKomatsu UniversityKomatsuJapan
| | - Nobuo Suzuki
- Division of Marine Environmental Studies, Noto Marine Laboratory, Institute of Nature and Environmental TechnologyKanazawa UniversityNoto‐choJapan
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18
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Nakano Y, Suzuki M, Waseda K, Niwa T, Ando H, Sakurai S, Shimoda M, Ohashi H, Takashima H, Amano T. P2688A novel risk factor of stent restenosis after drug-eluting stent implantation; Involvement of triglyceride deposit cardiomyovasculopathy, coronary atherosclerosis with triglyceride deposition. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1006] [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: 11/12/2022] Open
Abstract
Abstract
Background
Triglyceride deposit cardiomyovasculopathy (TGCV) is a novel disease concept characterized by the excessive accumulation of triglyceride in cardiomyocytes and vascular smooth muscle cells, leading to coronary artery disease (CAD), heart failure, and arrhythmia. However, it is rarely known whether TGCV contributes to the increased risk of vascular failure after drug eluting stent (DES) implantation.
Purpose
The aim of this study was to evaluate vascular failure after 2nd generation DES implantation in patients with TGCV.
Methods
Among 637 consecutive patients suspected of having CAD who underwent both coronary angiography and iodine-123-β-methyliodophenyl-pentadecanoic acid (BMIPP) scintigraphy between 2010 and 2018, we analyzed the data from 92 patients who met the inclusion criteria (shown in Table and Figure). Ninety-two patients were allocated to the presence (TGCV group, 11 patients) or absence (control group, 81 patients) of TGCV. All of 92 patients were implanted 2nd generation DES and underwent planned follow up coronary angiography. Control patients were diagnosed of diabetes mellitus. Binary restenosis (ISR), defined as angiographic luminal diameter ≥50% by quantitative coronary angiography, target lesion revascularization (TLR), In-stent late loss and restenosis morphology were assessed in 23 stents of TGCV group and 120 stents of control group.
Results
There were no significant differences in baseline characteristics between the two groups except for the prevalence of hypertension. In-stent late loss was greater in TGCV than in control (0.45 (−0.04 to 3.33) vs. 0.15 (−0.18 to 2.75), p=0.ehz748.10067), resulting in greater incidence of ISR and TLR in TGCV than in control (34.8% vs. 10.0%, p=0.0017; 21.7% vs. 6.7%, p=0.021, respectively). On multivariable logistic regression analysis, TGCV was found to be a significant and independent predictor for ISR after 2nd generation DES implantation. Regarding restenosis morphology, diffuse and occlusive pattern of ISR, were more frequently observed in TGCV than control (87.5% and 33.3%, Fisher's exact test p=0.028).
Table 1.The 4th edition diagnostic criteria for TGCV Items Clinical findings 2 points I) BMIPP scintigraphy Wash-Out Rare <10% II) Diffuse narrowng coronary arteries 1 point III) Jordans anomaly in peripheral blood smear IV) Diabetes Decision 4 points or more → Definite TGCV
Figure 1
Conclusion
Patients with TGCV showed the greater incidence of vascular failure even after 2nd generation DES implantation, contributing to the novel risk factor for coronary intervention even in the 2nd DES era.
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Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - M Suzuki
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Narita Memorial Hospital, Cardiology, Toyohashi, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - M Shimoda
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | | | - T Amano
- Aichi Medical University, Nagakute, Japan
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Shimoda M, Ando H, Takashima H, Waseda K, Sakurai S, Suzuki A, Sawada H, Fujimoto M, Ohashi H, Amano T. P5628Resolution of incomplete stent apposition in the early phase after stent implantation: serial optical coherence tomography analyses at 2-week and 4-month. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0572] [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
Previous optical coherence tomography (OCT) study demonstrated that the incomplete stent apposition (ISA) distance <355 μm immediately after an index procedure was the corresponding cut-off point for predicting the resolution of ISA at 8–12 months follow-up in the second-generation DES. However, the natural course of acute ISA in the earlier phase remains unknown. The aim of the present study is to evaluate the natural course of acute ISA in the early phase after second-generation everolimus-eluting stent (EES) using serial OCT analyses at 2-week and 4-month.
Methods
From the population of the ACS-OCT trial, we identified a total of 45 patients who successfully underwent serial OCT examinations at post-stenting, 2-week follow-up, and 4-month follow-up. The presence of ISA was assessed in the OCT images, and ISA distance was measured within the stented segment. The target site for OCT analysis was the cross-section at the proximal edge of implanted stent. Serial OCT images at post-stenting, 2-week follow-up and 4-month follow-up were reviewed side by side on the screen, and maximum ISA distance and cross-sectional ISA area were measured.
Results
Incomplete stent apposition was observed in all EES at post-stenting, and it was persistent in 37.8% at 2-week follow-up and 11.1% at 4-month follow-up. Maximum ISA distance was significantly decreased over time (post-stenting, 144±150mm; 2-week follow-up, 88±146mm; 4-month follow-up, 34±111mm). Receiver-operating curve analysis identified that the best cut-off value of OCT-estimated ISA distance at post-stenting for predicting persistent ISA at 2-week follow-up and 4-month follow-up was >140μm and >215μm, respectively.
ROC curve analysis
Conclusion
ISA distance at post-stenting is an useful predictor for the resolution of ISA in the early phase after EES implantation.
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Affiliation(s)
- M Shimoda
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Takashima
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Cardiology, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Cardiology, Nagakute, Japan
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20
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Takashima H, Suzuki A, Sakurai S, Ando H, Nakano Y, Watanabe A, Mukai K, Wakabayashi H, Kojima H, Sawada H, Saka Y, Fujimoto M, Tanabe S, Ohashi H, Amano T. P5633Diagnostic impact of resting full-cycle ratio as newly developed non-hyperemic indices for physiological lesion assessment. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0577] [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: 11/14/2022] Open
Abstract
Abstract
Background
Although fractional flow reserve (FFR) is a gold standard method to evaluate functional lesion severity in the catheterization laboratory, the need of hyperemic condition limits the widespread adoption of FFR. Recently, the resting full-cycle ratio (RFR) which was newly developed resting indices was launched. It is unclear whether RFR as resting condition could assess physiological lesion severity of coronary artery stenosis. The aim of this study was to evaluate the diagnostic impact of RFR compared to FFR in entire range of coronary artery stenosis.
Method
A total of 53 patients with 70 lesions were enrolled in this study. The RFR was measured after adequately waiting for stable condition, while FFR was measured after intravenous administration of ATP (180mcg/kg/min). Lesions with FFR ≤0.80 were considered functionally significant coronary artery stenosis.
Results
In all lesions, reference diameter, diameter stenosis, lesion length, RFR, and FFR were 3.3±0.8mm, 44±12%, 14.6±7.2mm, 0.90±0.11, and 0.83±0.11, respectively. Functional significance was observed in 24 lesions (34%) of all lesions. The RFR showed a significant correlation with FFR (y = 0.800x + 0.239, R = 0.817, p<0.001). The Bland-Altman plot demonstrated a good agreement with a mean difference of 0.07 and a standard deviation of 0.06 between RFR and FFR across entire range of coronary artery stenosis. ROC curve analysis showed an excellent accuracy of RFR cut-off of ≤0.90 in predicting FFR ≤0.80 which had 78% sensitivity and 87% specificity (AUC 0.87, diagnostic accuracy 84%).
Conclusion
The RFR as newly resting indices is reliable to the assessment of functional lesion severity. This physiology-based approach may be a possible alternative method for FFR measurements in daily practice.
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Affiliation(s)
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - S Sakurai
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | - Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - A Watanabe
- Aichi Medical University, Nagakute, Japan
| | - K Mukai
- Aichi Medical University, Nagakute, Japan
| | | | - H Kojima
- Aichi Medical University, Nagakute, Japan
| | - H Sawada
- Aichi Medical University, Nagakute, Japan
| | - Y Saka
- Aichi Medical University, Nagakute, Japan
| | - M Fujimoto
- Aichi Medical University, Nagakute, Japan
| | - S Tanabe
- Aichi Medical University, Nagakute, Japan
| | - H Ohashi
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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21
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Sato N, Yoshimoto S, Kohara N, Eguchi K, Tsuruta Y, Yagi M, Shibata T, Ichihashi M, Ando H. 798 Autophagosome-like vacuoles in vitiligo melanocytes are associated with cell viability and intracellular glutathione levels. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.874] [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]
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22
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Yoshimoto S, Sato N, Kohara N, Eguchi K, Tsuruta Y, Ando H, Ichihashi M. 885 The secretion of TNF-α by inflammatory macrophages has dual effects on subcutaneous adipose precursor cells: inhibition of differentiation and activation of proliferation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.961] [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: 10/27/2022]
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23
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Kohara N, Yoshimoto S, Sato N, Eguchi K, Tsuruta Y, Yagi M, Ichihashi M, Ando H. 747 The coexistence of riboflavin and tryptophan is responsible for the production of H2O2 in the UVA-induced cytotoxicity of dermal fibroblasts. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.823] [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: 10/27/2022]
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24
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Hojo M, Kobayashi N, Hasegawa Y, Sakamoto Y, Murakami S, Yamamoto Y, Tada Y, Maeno A, Kubo Y, Ando H, Shimizu M, Taquahashi Y, Suzuki T, Nakae D, Hirose A. Relationship between developmental toxicity of multi-wall carbon nanotubes and lung inflammation in pregnant mice after repeated intratracheal instillation. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.915] [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]
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25
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Ando H, Shahjahan M, Kitahashi T. Periodic regulation of expression of genes for kisspeptin, gonadotropin-inhibitory hormone and their receptors in the grass puffer: Implications in seasonal, daily and lunar rhythms of reproduction. Gen Comp Endocrinol 2018; 265:149-153. [PMID: 29625122 DOI: 10.1016/j.ygcen.2018.04.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 03/26/2018] [Accepted: 04/02/2018] [Indexed: 01/02/2023]
Abstract
The seasonal, daily and lunar control of reproduction involves photoperiodic, circadian and lunar changes in the activity of kisspeptin, gonadotropin-inhibitory hormone (GnIH) and gonadotropin-releasing hormone (GnRH) neurons. These changes are brought through complex networks of light-, time- and non-photic signal-dependent control mechanisms, which are mostly unknown at present. The grass puffer, Takifugu alboplumbeus, a semilunar spawner, provides a unique and excellent animal model to assess this question because its spawning is synchronized with seasonal, daily and lunar cycles. In the diencephalon, the genes for kisspeptin, GnIH and their receptors showed similar expression patterns with clear seasonal and daily oscillations, suggesting that they are regulated by common mechanisms involving melatonin, circadian clock and water temperature. For implications in semilunar-synchronized spawning rhythm, melatonin receptor genes showed ultradian oscillations in expression with the period of 14.0-15.4 h in the pineal gland. This unique ultradian rhythm might be driven by circatidal clock. The possible circatidal clock and circadian clock in the pineal gland may cooperate to drive circasemilunar rhythm to regulate the expression of the kisspeptin, GnIH and their receptor genes. On the other hand, high temperature (over 28 °C) conditions, under which the expression of the kisspeptin and its receptor genes is markedly suppressed, may provide an environmental signal that terminates reproduction at the end of breeding period. Taken together, the periodic regulation of the kisspeptin, GnIH and their receptor genes by melatonin, circadian clock and water temperature may be important in the precisely-timed spawning of the grass puffer.
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Affiliation(s)
- Hironori Ando
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan.
| | - Md Shahjahan
- Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Takashi Kitahashi
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan
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Nakano Y, Suzuki M, Niwa T, Suzuki A, Shimoda M, Satake A, Ando H, Takashima H, Waseda K, Amano T. P1662Impact of triglyceride deposit cardiomyovasculopathy, a novel type atherosclerosis with triglyceride deposition in coronary arteries, on neointimal proliferation after coronary stent-implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | - M Suzuki
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Aichi Medical University, Nagakute, Japan
| | - A Suzuki
- Aichi Medical University, Nagakute, Japan
| | - M Shimoda
- Aichi Medical University, Nagakute, Japan
| | - A Satake
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | | | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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27
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Nakano Y, Wakabayashi H, Mukai K, Niwa T, Watanabe A, Ando H, Takashima H, Mizuno T, Waseda K, Amano T. P914Clinical impact of tricuspid annular plane systolic excursion, the index of right ventricular performance, to detect low cardiac output state. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Nakano
- Aichi Medical University, Nagakute, Japan
| | | | - K Mukai
- Aichi Medical University, Nagakute, Japan
| | - T Niwa
- Aichi Medical University, Nagakute, Japan
| | - A Watanabe
- Aichi Medical University, Nagakute, Japan
| | - H Ando
- Aichi Medical University, Nagakute, Japan
| | | | - T Mizuno
- Aichi Medical University, Nagakute, Japan
| | - K Waseda
- Aichi Medical University, Nagakute, Japan
| | - T Amano
- Aichi Medical University, Nagakute, Japan
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28
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Yoshimoto S, Yanagi H, Yoshida M, Yagi M, Ando H, Ichihashi M. 1132 Establishment of photo-aged in vitro senescence model using cultured fibroblasts by repeated UVA irradiation: PAPLAL with potent catalase-like activity prevented cellular senescence. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1146] [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: 10/17/2022]
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29
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Yanagi H, Yoshida M, Yoshimoto S, Shibata T, Ichihashi M, Ando H. 1221 Intracellular vacuoles observed in cultured melanocytes obtained from normally pigmented skin of a vitiligo patient were vanished by the treatment of anti-oxidants. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1236] [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: 10/17/2022]
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30
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Tanaka H, Oishi G, Nakano Y, Mizuta H, Nagano Y, Hiramatsu N, Ando H, Shimizu M. Production of recombinant salmon insulin-like growth factor binding protein-1 subtypes. Gen Comp Endocrinol 2018; 257:184-191. [PMID: 28666856 DOI: 10.1016/j.ygcen.2017.06.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 05/04/2017] [Accepted: 06/21/2017] [Indexed: 11/22/2022]
Abstract
Insulin-like growth factor (IGF)-I is a growth promoting hormone that exerts its actions through endocrine, paracrine and autocrine modes. Local IGF-I is essential for normal growth, whereas circulating IGF-I plays a crucial role in regulating the production and secretion of growth hormone (GH) by the pituitary gland. These actions of IGF-I are modulated by six insulin-like growth factor binding proteins (IGFBPs). In teleosts, two subtypes of each IGFBP are present due to an extra round of whole-genome duplication. IGFBP-1 is generally inhibitory to IGF-I action under catabolic conditions such as fasting and stress. In salmon, IGFBP-1a and -1b are two of three major circulating IGFBPs and assumed to affect growth through modulating IGF-I action. However, exact functions of salmon IGFBP-1 subtypes on growth regulation are not known due to the lack of purified or recombinant protein. We expressed recombinant salmon (rs) IGFBP-1a and -1b with a fusion protein (thioredoxin, Trx) and a His-tag using the pET-32a(+) vector expression system in Escherichia coli. Trx.His.rsIGFBP-1s were isolated by Ni-affinity chromatography, enzymatically cleaved by enterokinase to remove the fusion partners and further purified by reversed-phase HPLC. We next examined effects of rsIGFBP-1a and -1b in combination with human IGF-I on GH release from cultured masu salmon (Oncorhynchus masou) pituitary cells. Unexpectedly, IGF-I increased GH release and an addition of rsIGFBP-1a, but not rsIGFBP-1b, restored GH levels. The results suggest that IGFBP-1a can inhibit IGF-I action on the pituitary in masu salmon. Availability of recombinant salmon IGFBP-1s should facilitate further functional analyses and assay development.
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Affiliation(s)
- Hanae Tanaka
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Gakuto Oishi
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Yusuke Nakano
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Hiroko Mizuta
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Yuta Nagano
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Naoshi Hiramatsu
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Faculty of Science, Niigata University, 87 Tassha, Sado 952-2135, Japan
| | - Munetaka Shimizu
- Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan.
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Ando H, Niwa J, Ooiwa H, Nakagawa M, Nagatomi C, Saeki S, Yasumoto A, Yuasa T, Taguchi S, Higa T, Fjikake A, Fukuoka T, Tokui K, Okada Y, Masayuki I, Nakao N, Doyu M, Matsuo N, Sigeru M, Takayasu M. Investigation of intravenous recombinant tissue plasminogen activator(rt-PA) therapy and endovascular therapy at Aichi Medical University Hospital. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3326] [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]
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32
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Taguchi S, Tanabe N, Saeki S, Yuasa T, Ooiwa H, Nakagawa M, Nagatomi C, Nakashima K, Yasumoto A, Ando H, Higa T, Tsunoda Y, Fujikake A, Fukuoka T, Tokui K, Okada Y, Niwa J, Izumi M, Nakao N, Doyu M. Spect findings in Parkinsonian patients: A clinical indicator of antiparkinsonian drug efficacy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2687] [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: 10/18/2022]
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33
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Higa T, Nakashima K, Ohiwa H, Ito C, Nakagawa M, Saeki S, Yuasa T, Yasumoto A, Ando H, Taguchi S, Fujikake A, Fukuoka T, Tokui K, Okada Y, Niwa J, Izumi M, Nakao N, Doyu M. The relationship of autonomic function with severity and clinical outcome in stroke patients ₋ analysis of light reaction by electronic pupillometer. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3656] [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]
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34
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Yuasa T, Tanabe N, Taguchi S, Saeki S, Ooiwa H, Nakagawa M, Nagatomi C, Yasumoto A, Ando H, Higa T, Fujikake A, Fukuoka T, Tokui K, Okada Y, Niwa J, Izumi M, Nakao N, Doyu M. The association of clinical features and cerebral blood flow in Parkinson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Takashima H, Suzuki A, Ando H, Waseda K, Kurita A, Sakurai S, Saka Y, Sawada H, Amano T. P864Diagnostic performance of computed tomography derived fractional flow reserve on functional ischemia of coronary stenosis in each culprit vessel. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p864] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Shimoda M, Ando H, Sawada H, Naitou K, Saka Y, Suzuki A, Sakurai S, Kurita A, Waseda K, Takashima H, Amano T. P3318Acute phase vascular healing after stent implantation for patients with acute coronary syndrome: comparison of stent coverage between SYNERGY and XIENCE at 2 weeks and 4 months after implantation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3318] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Takashima H, Sakurai S, Kurita A, Ando H, Suzuki A, So T, Toda Y, Waseda K, Amano T. P6495Impact of hemodialysis on long-term clinical outcomes in deferral patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6495] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Takashima H, Kurita A, Ando H, Sakurai S, Suzuki A, Saka Y, Sawada H, Shimoda M, Amano T. P2346Releationship between coronary plaque composition and functional lesion severity in patients with stable angina pectoris. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2346] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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39
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Mukai K, Mizuno T, Nakano Y, Niwa T, Watanabe A, Wakabayashi H, Ando H, Takashima H, Waseda K, Amano T. P1434The usefulness of tricuspid annular plane systolic excursion, the index of right ventricular performance, to detect low stroke index. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1434] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Shahjahan M, Kitahashi T, Ando H. Temperature affects sexual maturation through the control of kisspeptin, kisspeptin receptor, GnRH and GTH subunit gene expression in the grass puffer during the spawning season. Gen Comp Endocrinol 2017; 243:138-145. [PMID: 27916574 DOI: 10.1016/j.ygcen.2016.11.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/25/2016] [Accepted: 11/30/2016] [Indexed: 01/31/2023]
Abstract
Water temperature is an environmental factor of primary importance that influences reproductive function in fish. To understand the molecular and physiological mechanisms underlying the regulation of reproduction by temperature, we examined changes in expression of genes encoding kisspeptin (kiss2), kisspeptin receptor (kiss2r) and three gonadotropin-releasing hormones (gnrh1, gnrh2 and gnrh3) in the brain and genes encoding gonadotropin (GTH) subunits (gpa, fshb and lhb) in the pituitary of grass puffer exposed to a low temperature (14°C), normal temperature (21°C) and high temperature (28°C) for 7days. In addition, the plasma levels of cortisol were examined after exposed to three temperature conditions. The gonadosomatic index was significantly decreased in both low and high temperature conditions. The levels of kiss2 and kiss2r mRNAs were significantly decreased at both low and high temperature conditions compared to normal temperature (control) condition. gnrh1 but not gnrh2 were significantly decreased in both temperature conditions, while gnrh3 showed a decreasing tendency in low temperature. Consequently, the levels of fshb and lhb mRNAs were significantly decreased in both low and high temperature conditions. Interestingly, the plasma levels of cortisol were significantly increased in low temperature but remain unchanged in high temperature, suggesting that the fish were under stress in the low temperature conditions but not in the high temperature conditions. Taken together, the present results indicate that anomalous temperature have an inhibitory effect on reproductive function through suppressing kiss2/kiss2r/gnrh1/fshb and lhb expression and these changes may occur in a normal physiological response as well as in a malfunctional stress response.
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Affiliation(s)
- Md Shahjahan
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan
| | - Takashi Kitahashi
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan.
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41
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Ikawa T, Kakegawa A, Nagano T, Ando H, Yamakoshi Y, Tanabe T, Simmer JP, Hu CC, Fukae M, Oida S. Porcine Amelogenin is Expressed from the X and Y Chromosomes. J Dent Res 2016; 84:144-8. [PMID: 15668331 DOI: 10.1177/154405910508400207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Amelogenin is the major enamel matrix component in developing teeth. In eutherian mammals, amelogenin is expressed from the X chromosome only, or from both the X and Y chromosomes. Two classes of porcine amelogenin cDNA clones have been characterized, but the chromosomal localization of the gene(s) encoding them is unknown. To determine if there are sex-based differences in the expression of porcine amelogenin, we paired PCR primers for exons 1a, 1b, 7a, and 7b, and amplified enamel organ-derived cDNA separately from porcine males and females. The results show that exons 1a/2a and 7a are always together and can be amplified from both males (XY) and females (XX). Exons 1b/2b and 7b are also always paired, but can be amplified only from females. We conclude that porcine amelogenin is expressed from separate genes on the X and Y chromosomes, and not, as previously proposed, from a single gene with two promoters.
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Affiliation(s)
- T Ikawa
- Department of Biochemistry, School of Dental Medicine, Tsurumi University, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, 230-8501, Japan
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Ando H, Takizawa K, Yoshida T, Matsushita K, Hirata M, Suzuki T. Wireless Multichannel Neural Recording With a 128-Mbps UWB Transmitter for an Implantable Brain-Machine Interfaces. IEEE Trans Biomed Circuits Syst 2016; 10:1068-1078. [PMID: 26930692 DOI: 10.1109/tbcas.2016.2514522] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Simultaneous recordings of neural activity at large scale, in the long term and under bio-safety conditions, can provide essential data. These data can be used to advance the technology for brain-machine interfaces in clinical applications, and to understand brain function. For this purpose, we present a new multichannel neural recording system that can record up to 4096-channel (ch) electrocorticogram data by multiple connections of customized application-specific integrated circuits (ASICs). The ASIC includes 64-ch low-noise amplifiers, analog time-division multiplexers, and 12-bit successive approximation register ADCs. Recorded data sampled at a rate of 1 kS/s are multiplexed with time division via an integrated multiplex board, and in total 51.2 Mbps of raw data for 4096 ch are generated. This system has an ultra-wideband (UWB) wireless unit for transmitting the recorded neural signals. The ASICs, multiplex boards, and UWB transmitter unit are designed with the aim of implanting them. From preliminary experiments with a human body-equivalent liquid phantom, we confirmed 4096-ch UWB wireless data transmission at 128 Mbps for distances below 20 mm .
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Ashcroft H, Ando H, Halhead R, Chakrabarti B, Young CA, Cousins R, Angus RM. S57 Qualitative assessment of the experience of telemonitoring in ventilated patients with motor neurone disease. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.63] [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: 11/04/2022]
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44
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Ando H, Takizawa K, Yoshida T, Matsushita K, Hirata M, Suzuki T. Multichannel neural recording with a 128 Mbps UWB wireless transmitter for implantable brain-machine interfaces. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:4097-100. [PMID: 26737195 DOI: 10.1109/embc.2015.7319295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
To realize a low-invasive and high accuracy BMI (Brain-machine interface) system, we have already developed a fully-implantable wireless BMI system which consists of ECoG neural electrode arrays, neural recording ASICs, a Wi-Fi based wireless data transmitter and a wireless power receiver with a rechargeable battery. For accurate estimation of movement intentions, it is important for a BMI system to have a large number of recording channels. In this paper, we report a new multi-channel BMI system which is able to record up to 4096-ch ECoG data by multiple connections of 64-ch ASICs and time division multiplexing of recorded data. This system has an ultra-wide-band (UWB) wireless unit for transmitting the recorded neural signals to outside the body. By preliminary experiments with a human body equivalent liquid phantom, we confirmed 4096-ch UWB wireless data transmission at 128 Mbps mode below 20 mm distance.
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Adenyo C, Ando H, Kayang BB, Inoue E, Inoue-Murayama M. P1040 Diet analysis of grasscutter using next generation sequencing. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement434x] [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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46
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Shahjahan M, Doi H, Ando H. LPXRFamide peptide stimulates growth hormone and prolactin gene expression during the spawning period in the grass puffer, a semi-lunar synchronized spawner. Gen Comp Endocrinol 2016; 227:77-83. [PMID: 26385315 DOI: 10.1016/j.ygcen.2015.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 09/02/2015] [Accepted: 09/11/2015] [Indexed: 11/29/2022]
Abstract
Gonadotropin-inhibitory hormone (GnIH) plays as a multifunctional neurohormone that controls reproduction in birds and mammals. LPXRFamide (LPXRFa) peptide, the fish ortholog of GnIH, has been shown to regulate the secretion of not only gonadotropin (GTH) but also growth hormone (GH) and prolactin (PRL), which are potentially important for gonadal function. To investigate the role of LPXRFa peptide on reproduction of the grass puffer, which spawns in semilunar cycles, we examined changes in the levels of gh and prl expression over the several months during the reproductive cycle, and the effects of goldfish LPXRFa peptide-1 (gfLPXRFa-1) on their expression were examined using primary pituitary cultures. The expression levels of both gh and prl showed significant changes during the reproductive cycle in both sexes with one peak in the spawning and pre-spawning periods for gh and prl, respectively. Particularly, gh showed substantial increase in expression in the spawning and post-spawning periods, indicative of its essentiality in the advanced stage of reproduction. gfLPXRFa-1 stimulated the expression of both gh and prl but there was a marked difference in response between them: gfLPXRFa-1 stimulated gh expression at a relatively low dose but little effect was observed on prl. Combined with the previous results of daily and circadian oscillations of lpxrfa expression, the present results suggest that LPXRFa peptide is important in the control of the cyclic reproduction by serving as a multifunctional hypophysiotropic factor that regulates the expression of gh and prl as well as GTH subunit genes.
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Affiliation(s)
- Md Shahjahan
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan
| | - Hiroyuki Doi
- Shimonoseki Marine Science Museum "Kaikyokan", Shimonoseki Academy of Marine Science, Yamaguchi 750-0036, Japan
| | - Hironori Ando
- Sado Marine Biological Station, Faculty of Science, Niigata University, Sado, Niigata 952-2135, Japan.
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Ashcroft HJ, Ando H, Chakrabarti B, Halhead R, Levene P, Angus RM. P190 Development of a respiratory question set for remote monitoring in motor neurone disease (MND). Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.327] [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: 11/03/2022]
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48
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Matsumoto Y, Lee JH, Morimoto T, Nakanishi R, Nishimura S, Baba T, Oka H, Kakei S, Okada Y, Ando H, Kawamata T. Quantitative evaluation of movement disorder of wrist joint in patients with cerebral, thalamic and cerebellar stroke. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1820] [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]
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49
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Otani Y, Aoki O, Hirota T, Kato J, Nakazawa M, Ando H. Determination of factors associated with gait recovery and the period for achieving independent walking in post-stroke hemiplegic patients. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.2074] [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]
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50
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Ando H, Kurata A, Kishimoto N. Antimicrobial properties and mechanism of volatile isoamyl acetate, a main flavour component of Japanese sake (Ginjo-shu). J Appl Microbiol 2015; 118:873-80. [PMID: 25626919 DOI: 10.1111/jam.12764] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 09/26/2014] [Revised: 12/21/2014] [Accepted: 01/20/2015] [Indexed: 11/30/2022]
Abstract
AIMS To evaluate the antimicrobial properties of the main Ginjo-flavour components of sake, volatile isoamyl acetate and isoamyl alcohol. METHODS AND RESULTS Volatile isoamyl acetate and isoamyl alcohol both inhibited growth of the five yeast and 10 bacterial test strains. The minimum inhibitory dose and minimum bactericidal (fungicidal) dose of isoamyl acetate were higher than those of isoamyl alcohol. Escherichia coli and Acetobacter aceti were markedly sensitive to isoamyl acetate and isoamyl alcohol. In E. coli exposed to isoamyl acetate for 5 h, changes in expression were noted in proteins involved in sugar metabolism (MalE, MglB, TalB and PtsI), tricarboxylic acid cycle (AceA, Pfl and AcnB) and protein synthesis (EF-Tu, EF-G, and GlyS). Expression of acid and alcohol stress-response proteins was altered in E. coli exposed to isoamyl acetate. Esterase activity was detected in E. coli, suggesting that isoamyl acetate was hydrolyzed to acetic acid and isoamyl alcohol. Acetic acid and isoamyl alcohol damaged E. coli cell membranes and inactivated membrane proteins, impairing respiration. CONCLUSIONS Volatile isoamyl acetate and isoamyl alcohol were effective in inactivating various micro-organisms, and antimicrobial mechanism of volatile isoamyl acetate against E. coli was clarified based on proteome analysis. SIGNIFICANCE AND IMPACT OF THE STUDY To the best of our knowledge, this is the first report to examine the antimicrobial mechanism of volatile organic compound using proteome analysis combining two-dimensional difference gel electrophoresis with peptide mass fingerprinting.
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Affiliation(s)
- H Ando
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda City, Osaka, Japan
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