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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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Fujimoto K, Hashimoto D, Kim SW, Lee YS, Suzuki T, Nakata M, Kumegawa S, Asamura S, Yamada G. Novel erectile analyses revealed augmentable penile Lyve-1, the lymphatic marker, expression. Reprod Med Biol 2024; 23:e12570. [PMID: 38566911 PMCID: PMC10985380 DOI: 10.1002/rmb2.12570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/06/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
Purpose The pathophysiology of penis extends to erectile dysfunction (ED) to conditions including sexually transmitted diseases (STDs) and cancer. To date, there has been little research evaluating vascular drainage from the penis. We aimed to evaluate penile blood flow in vivo and analyze its possible relationship with the lymphatic maker. Materials and Methods We established an in vivo system designed to assess the dynamic blood outflow from the corpus cavernosum (CC) by dye injection. To analyze lymphatic characteristics in the CC, the expression of Lyve-1, the key lymphatic endothelium marker, was examined by the in vitro system and lipopolysaccharide (LPS) injection to mimic the inflammatory conditions. Results A novel cavernography methods enable high-resolution morphological and functional blood drainage analysis. The expression of Lyve-1 was detected along the sinusoids. Furthermore, its prominent expression was also observed after penile LPS injection and in the erectile condition. Conclusions The current in vivo system will potentially contribute to the assessment of penile pathology from a novel viewpoint. In addition, current analyses revealed inducible Lyve-1 expression for LPS injection and the erection state, which requires further analyses on penile lymphatic system.
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Affiliation(s)
- Kota Fujimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Daiki Hashimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Physiology and Regenerative Medicine, Faculty of MedicineKindai UniversityOsakaJapan
| | - Sang Woon Kim
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Yong Seung Lee
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulKorea
| | - Takuya Suzuki
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Masanori Nakata
- Department of Physiology, Faculty of MedicineWakayama Medical UniversityWakayamaJapan
| | - Shinji Kumegawa
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Shinichi Asamura
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
| | - Gen Yamada
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive SurgeryWakayama Medical UniversityWakayamaJapan
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Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Yamamoto R, Ozawa K, Wada S, Sago H, Nagasaki S, Takano M, Nakata M, Nozaki M, Ishii K. Infantile outcome at 3 years of age among monochorionic twins with Type-II or -III selective fetal growth restriction with isolated oligohydramnios who underwent fetoscopic laser photocoagulation. Ultrasound Obstet Gynecol 2023. [PMID: 38031151 DOI: 10.1002/uog.27551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/17/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVE This study aimed to examine infantile outcomes at 3 years of age with selective fetal growth restriction (sFGR) Types II and III with isolated oligohydramnios who underwent fetoscopic laser photocoagulation (FLP). METHODS This multicenter prospective cohort study included monochorionic diamniotic twins who underwent FLP for sFGR between 16 and 25 weeks of gestation. The indication for performing FLP was in cases of sFGR Type II or III with oligohydramnios, where the maximal vertical pocket was ≤2 cm among twins with FGR. This was done in the absence of a typical twin-twin transfusion syndrome diagnosis. The primary outcome was the intact survival (IS) rate of infants at the corrected age of 40 weeks and 3 years. IS at the corrected age of 40 weeks was defined as survival without grade III or IV intraventricular hemorrhage or cystic periventricular leukomalacia, and IS at 3 years of age was defined as survival without neurodevelopmental morbidity, including cerebral palsy, neurodevelopmental impairment with a total developmental quotient of ≤70, bilateral deafness, or bilateral blindness. RESULTS Among 45 patients with sFGR, 30 (66.7%) were classified as having Type II and 15 (33.3%) as Type III sFGR. The prevalence of IS at the corrected age of 40 weeks was 51.1% (n=23) in FGR twins and 95.5% (n=42) in larger twins. The prevalence of IS at 3 years of age was 46.7% (n=21) in FGR twins and 86.4% (n=38) in larger twins. Among the 24 FGR twins who were not diagnosed with IS at 3 years of age, 91.7% (22 of 24 cases) suffered fetal or infantile demise other than miscarriage and neurodevelopmental impairment. All larger twins who were not diagnosed with IS at 3 years of age (n=6, 13.6%) had neurological morbidity, in addition to one case of miscarriage. CONCLUSIONS FGR twins and larger twins, when subjected to FLP due to sFGR coupled with umbilical artery Doppler abnormalities and isolated oligohydramnios, exhibit low rates of neurological morbidity and low mortality, respectively. Therefore, FLP for Type II or III sFGR with oligohydramnios may be a feasible and preferable management option. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- R Yamamoto
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan
| | - K Ozawa
- National Center for Child Health and Development, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, Tokyo, Japan
| | - S Wada
- National Center for Child Health and Development, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, Tokyo, Japan
| | - H Sago
- National Center for Child Health and Development, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, Tokyo, Japan
| | - S Nagasaki
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
| | - M Takano
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
| | - M Nakata
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
| | - M Nozaki
- Department of Neonatology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - K Ishii
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan
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Nakata M, Yamaguchi Y, Monnkawa H, Takahashi M, Zhang B, Santoso P, Yada T, Maruyama I. 1,5-Anhydro-D-Fructose Exhibits Satiety Effects via the Activation of Oxytocin Neurons in the Paraventricular Nucleus. Int J Mol Sci 2023; 24:ijms24098248. [PMID: 37175953 PMCID: PMC10179633 DOI: 10.3390/ijms24098248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
1,5-Anhydro-D-fructose (1,5-AF) is a bioactive monosaccharide that is produced by the glycogenolysis in mammalians and is metabolized to 1,5-anhydro-D-glucitol (1,5-AG). 1,5-AG is used as a marker of glycemic control in diabetes patients. 1,5-AF has a variety of physiological activities, but its effects on energy metabolism, including feeding behavior, are unclarified. The present study examined whether 1,5-AF possesses the effect of satiety. Peroral administration of 1,5-AF, and not of 1,5-AG, suppressed daily food intake. Intracerebroventricular (ICV) administration of 1,5-AF also suppressed feeding. To investigate the neurons targeted by 1,5-AF, we investigated c-Fos expression in the hypothalamus and brain stem. ICV injection of 1,5-AF significantly increased c-Fos positive oxytocin neurons and mRNA expression of oxytocin in the paraventricular nucleus (PVN). Moreover, 1,5-AF increased cytosolic Ca2+ concentration of oxytocin neurons in the PVN. Furthermore, the satiety effect of 1,5-AF was abolished in oxytocin knockout mice. These findings reveal that 1,5-AF activates PVN oxytocin neurons to suppress feeding, indicating its potential as the energy storage monitoring messenger to the hypothalamus for integrative regulation of energy metabolism.
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Affiliation(s)
- Masanori Nakata
- Department of Physiology, School of Medicine, Wakayama Medical University, Kimiidare 811-1, Wakayama 641-8509, Japan
| | - Yuto Yamaguchi
- Department of Physiology, School of Medicine, Wakayama Medical University, Kimiidare 811-1, Wakayama 641-8509, Japan
| | - Hikaru Monnkawa
- Department of Physiology, School of Medicine, Wakayama Medical University, Kimiidare 811-1, Wakayama 641-8509, Japan
| | - Midori Takahashi
- Department of Physiology, School of Medicine, Wakayama Medical University, Kimiidare 811-1, Wakayama 641-8509, Japan
| | - Boyang Zhang
- Department of Physiology, School of Medicine, Wakayama Medical University, Kimiidare 811-1, Wakayama 641-8509, Japan
| | - Putra Santoso
- Department of Physiology, Division of Integrative Physiology, School of Medicine, Jichi Medical University, Shimotsuke 329-0498, Japan
| | - Toshihiko Yada
- Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, Kyoto 604-8436, Japan
| | - Ikuro Maruyama
- Department of Systems Biology in Thromboregulation, Graduate School of Medical and Dental Science, Kagoshima University, Kagoshima 890-8520, Japan
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OTSUKA T, Ueda S, Nagasawa H, Okuma T, Nakata M, Sato K, Matsui T, Yamagishi S, Suzuki Y. WCN23-0319 HMGB1/RAGE AXIS COULD BE INVOLVED IN AKI TO CKD TRANSITION VIA MINERALOCORTICOID RECEPTOR-INDUCED INFLAMMATION IN RENAL ISCHEMIA REPERFUSION INJURY MICE MODEL. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.065] [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: 03/22/2023] Open
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Hirono M, Nakata M. Ghrelin signaling in the cerebellar cortex enhances GABAergic transmission onto Purkinje cells. Sci Rep 2023; 13:2150. [PMID: 36750743 PMCID: PMC9905081 DOI: 10.1038/s41598-023-29226-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Ghrelin, an orexigenic peptide ligand for growth hormone secretagogue receptor 1a (GHS-R1a), occurs not only in the stomach but also in the brain, and modulates neuronal activity and synaptic efficacy. Previous studies showed that GHS-R1a exists in the cerebellum, and ghrelin facilitates spontaneous firing of Purkinje cells (PCs). However, the effects of ghrelin on cerebellar GABAergic transmission have yet to be elucidated. We found that ghrelin enhanced GABAergic transmission between molecular layer interneurons (MLIs) and PCs using electrophysiological recordings in mouse cerebellar slices. This finding was consistent with the possibility that blocking synaptic transmission enhanced the ghrelin-induced facilitation of PC firing. Ghrelin profoundly increased the frequency of spontaneous inhibitory postsynaptic currents (IPSCs) in PCs without affecting miniature or stimulation-evoked IPSCs, whereas it significantly facilitated spontaneous firing of MLIs. This facilitation of MLI spiking disappeared during treatments with blockers of GHS-R1a, type 1 transient receptor potential canonical (TRPC1) channels and KCNQ channels. These results suggest that both activating TRPC1 channels and inhibiting KCNQ channels occur downstream the ghrelin-GHS-R1a signaling pathway probably in somatodendritic sites of MLIs. Thus, ghrelin can control PC firing directly and indirectly via its modulation of GABAergic transmission, thereby impacting activity in cerebellar circuitry.
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Affiliation(s)
- Moritoshi Hirono
- Department of Physiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-8509, Japan.
| | - Masanori Nakata
- Department of Physiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-8509, Japan
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Hashimoto D, Fujimoto K, Kim SW, Lee YS, Nakata M, Suzuki K, Wada Y, Asamura S, Yamada G. Emerging structural and pathological analyses on the erectile organ, corpus cavernous containing sinusoids. Reprod Med Biol 2023; 22:e12539. [PMID: 37663955 PMCID: PMC10472535 DOI: 10.1002/rmb2.12539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/08/2023] [Accepted: 08/18/2023] [Indexed: 09/05/2023] Open
Abstract
Background The corpus cavernosum (CC) containing sinusoids plays fundamental roles for erection. Analysis of pathological changes in the erectile system is studied by recent experimental systems. Various in vitro models utilizing genital mesenchymal-derived cells and explant culture systems are summarized. Methods 3D reconstruction of section images of murine CC was created. Ectopic chondrogenesis in aged mouse CC was shown by a gene expression study revealing the prominent expression of Sox9. Various experimental strategies utilizing mesenchyme-derived primary cells and tissue explants are introduced. Main Findings Possible roles of Sox9 in chondrogenesis and its regulation by several signals are suggested. The unique character of genital mesenchyme is shown by various analyses of external genitalia (ExG) derived cells and explant cultures. Such strategies are also applied to the analysis of erectile contraction/relaxation responses to many signals and aging process. Conclusion Erectile dysfunction (ED) is one of the essential topics for the modern aged society. More comprehensive studies are necessary to reveal the nature of the erectile system by combining multiple cell culture strategies.
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Affiliation(s)
- Daiki Hashimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Physiology and Regenerative Medicine, Faculty of MedicineKindai UniversityOsakaJapan
| | - Kota Fujimoto
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive Surgery, Graduate School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Sang Woon Kim
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulSouth Korea
| | - Yong Seung Lee
- Department of Urology, Urological Science InstituteYonsei University College of MedicineSeoulSouth Korea
| | - Masanori Nakata
- Department of Physiology, Faculty of MedicineWakayama Medical UniversityWakayamaJapan
| | - Kentaro Suzuki
- Faculty of Life and Environmental SciencesUniversity of YamanashiYamanashiJapan
| | - Yoshitaka Wada
- Department of Plastic and Reconstructive Surgery, Graduate School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Shinichi Asamura
- Department of Plastic and Reconstructive Surgery, Graduate School of MedicineWakayama Medical UniversityWakayamaJapan
| | - Gen Yamada
- Department of Developmental Genetics, Institute of Advanced MedicineWakayama Medical UniversityWakayamaJapan
- Department of Plastic and Reconstructive Surgery, Graduate School of MedicineWakayama Medical UniversityWakayamaJapan
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Oka M, Kurose K, Sakaeda K, Fukuda M, Sakai Y, Atarashi Y, Shimizu K, Masuda T, Nakatomi K, Kawase S, Suetsugu T, Mizuno K, Takemoto S, Yamaguchi H, Inoue H, Hattori N, Nakata M, Mukae H, Oga T. EP08.01-064 Serum NY-ESO-1 and XAGE1 Antibodies Predict and Monitor Clinical Responses to Immune Checkpoint Therapy for NSCLC. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.636] [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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Nakata M, Miwa, Wu CC, Chambers JK, Uchida K, Shiga, Nakayama H, Sasaki. Spontaneous intranasal tumours in degus (Octodon degus): 20 cases (2007-2020). J Small Anim Pract 2022; 63:829-833. [PMID: 35965417 DOI: 10.1111/jsap.13535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 04/04/2022] [Accepted: 06/14/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The objective of this retrospective study was to describe the clinical and histopathological findings associated with intranasal tumours in degus. MATERIALS AND METHODS Medical records of degus diagnosed with intranasal neoplasms on histopathological examination between the years 2007 and 2020 at one hospital were included in the study. RESULTS MEDICAL RECORDS OF DEGUS Twenty degus (10 males and 10 females) were eligible for inclusion. Initial clinical signs included sneezing, abnormal nasal sounds, and nasal discharge, followed by anorexia and frequent nose rubbing. On radiography, 15 out of 20 animals showed space-occupying lesions in the nasal cavity. CT was performed in 16 animals and revealed various degrees of changes, including abnormal radiopacity within the nasal cavity and damaged nasal septum. Rhinostomy and excisional biopsy was performed in all 20 animals. Six out of 20 patients died during the perioperative period. Six and seven degus survived for 3 months and 1 year, respectively. One animal was lost to follow-up. In 16 cases the histological diagnosis was consistent with fibromas, while in 4 cases with osteomas. CLINICAL SIGNIFICANCE Intranasal neoplasms in degus are mostly benign mesenchymal tumours with various degrees of bone formation, which is unique to this animal species. This occurrence should be considered as an important differential diagnosis for upper respiratory tract disease in degus.
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Affiliation(s)
- M Nakata
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan.,VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - Miwa
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan.,VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - C C Wu
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan
| | - J K Chambers
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, 1138657, Japan
| | - K Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, 1138657, Japan
| | - Shiga
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - H Nakayama
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - Sasaki
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
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Nakata M, Shimbo T, Kihara A, Sato C, Hori A, Yoshioka H, Yoshida K, Nihei K. Optimisation of Radiation Therapy in Bladder Preservation Therapy for Patients With Clinical Stage T2N0M0 Bladder Cancer. Clin Oncol (R Coll Radiol) 2022; 34:e430-e436. [PMID: 35715341 DOI: 10.1016/j.clon.2022.05.017] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 05/01/2022] [Accepted: 05/23/2022] [Indexed: 11/18/2022]
Abstract
AIMS A novel bladder preservation therapy, the OMC (Osaka Medical College) regimen, which combines radiation therapy with balloon-occluded arterial infusion of anticancer agents, is a treatment option for patients with muscle-invasive bladder cancer (MIBC). We retrospectively analysed the effects of changes in radiation dose and irradiation field on treatment efficacy and adverse events.The purpose of this study is to use the results of this study to help determine a course of radiation therapy for bladder preservation therapy of cT2N0M0 MIBC. MATERIALS AND METHODS We examined 352 patients with clinical stage T2N0M0 (cT2N0M0) MIBC classified into the following groups based on the irradiation method: group A, the whole pelvis (50 Gy/25 fractions) + local bladder (10 Gy/5 fractions); group B, the small pelvis (50 Gy/25 fractions) + local bladder (10 Gy/5 fractions); group C, the whole pelvis (40 Gy/20 fractions) + local bladder (10 Gy/5 fractions). RESULTS The complete response rate, 3-year overall survival and progression-free survival rates in group A were 92.9%, 94.9% and 82.1%, respectively; in group B were 87.2%, 86.7% and 76.7%, respectively; and in group C were 95.2%, 92.6% and 71.1%, respectively. No significant differences between the groups were noted. The incidence of ≥grade 3 urinary tract and gastrointestinal toxicities were not significantly different among the groups (group A: 7.8%, 1.7%; B, 11.1%, 0%; C, 7.1%, 1.8%, respectively). The 3-year progression-free rates of the common iliac lymph node (CILN) region in patients who received whole-pelvis and small-pelvis irradiation were 99.0 and 89.0% (P < 0.01), respectively, with the latter group having significantly high lymph node recurrence in the CILN region. CONCLUSIONS Our findings showed that the optimal radiation therapy for patients with cT2N0M0 MIBC undergoing the OMC regimen is whole-pelvis irradiation including the CILN region, with a total dose of 50 Gy/25 fractions.
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Affiliation(s)
- M Nakata
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - T Shimbo
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan.
| | - A Kihara
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - C Sato
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - A Hori
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - H Yoshioka
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - K Yoshida
- Department of Radiology, Kansai Medical University Medical Center, Osaka, Japan
| | - K Nihei
- Department of Radiation Oncology, Osaka Medical and Pharmaceutical University, Osaka, Japan
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12
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Yoshimoto T, Okazaki S, Sumiya M, Takahashi HK, Nakagawa E, Koike T, Kitada R, Okamoto S, Nakata M, Yada T, Kosaka H, Sadato N, Chikazoe J. Coexistence of sensory qualities and value representations in human orbitofrontal cortex. Neurosci Res 2022; 180:48-57. [PMID: 35218859 DOI: 10.1016/j.neures.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/07/2022] [Accepted: 02/20/2022] [Indexed: 10/19/2022]
Abstract
Despite the multiple regions and neural networks associated with value-based decision-making, the orbitofrontal cortex (OFC) is possible a particularly important one. Although the role of the OFC in reinforcer devaluation tasks, which assess the ability to represent identity, sensory qualities, and subjective values of the expected outcomes, has been established, the specific aspect represented in this area remains unclear. In this study, using functional magnetic resonance imaging, wherein participants rated the palatability of 128 food items using photographs, we investigated whether the human OFC represents object identity, sensory qualities, or value. Employing many items helped us dissociate object identity from sensory qualities and values; the inferred sensory qualities of identical items were manipulated by a change in metabolic state. Moreover, value differences between items were analytically controlled by employing a technique similar to age adjustment. The palatability ratings for food items significantly decreased after a meal. Using representational similarity analysis, we confirmed that the OFC represents value. Moreover, identical items were represented similarly in the lateral OFC in a given metabolic state; however, these representations were altered post-feeding. Importantly, this change was not explained by subjective value, suggesting that the OFC represents sensory quality and value, but not object identity.
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Affiliation(s)
- Takaaki Yoshimoto
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan
| | - Shuntaro Okazaki
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan
| | - Motofumi Sumiya
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan; Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Hayama, 240-0193, Japan
| | | | - Eri Nakagawa
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan
| | - Takahiko Koike
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan; Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Hayama, 240-0193, Japan
| | - Ryo Kitada
- Division of Psychology, School of Social Sciences, Nanyang Technological University, Singapore, 637332, Singapore
| | - Shiki Okamoto
- Second Department of Internal Medicine (Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology), Graduate School of Medicine, University of the Ryukyus, Okinawa, 903-0215, Japan
| | - Masanori Nakata
- Department of Physiology, Faculty of Medicine, Wakayama Medical University School of Medicine, Wakayama, 641-8509, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Kobe, 650-0047, Japan; Division of System Neuroscience, Kobe University Graduate School of Medicine Kobe, 650-0017, Japan
| | - Hirotaka Kosaka
- Department of Neuropsychiatry, University of Fukui, Fukui, 910-1193, Japan
| | - Norihiro Sadato
- Division of Cerebral Integration, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan; Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Hayama, 240-0193, Japan.
| | - Junichi Chikazoe
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Hayama, 240-0193, Japan; Section of Brain Function Information, Supportive Center for Brain Research, National Institute for Physiological Sciences, Okazaki, 444-8585, Japan; ARAYA Inc., Tokyo, 107-6024, Japan.
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13
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Nakata M, Kumari P, Kita R, Katsui N, Takeuchi Y, Kawaguchi T, Yamazaki T, Zhang B, Shimba S, Yada T. Circadian Clock Component BMAL1 in the Paraventricular Nucleus Regulates Glucose Metabolism. Nutrients 2021; 13:4487. [PMID: 34960038 PMCID: PMC8707417 DOI: 10.3390/nu13124487] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 11/17/2022] Open
Abstract
It is suggested that clock genes link the circadian rhythm to glucose and lipid metabolism. In this study, we explored the role of the clock gene Bmal1 in the hypothalamic paraventricular nucleus (PVN) in glucose metabolism. The Sim1-Cre-mediated deletion of Bmal1 markedly reduced insulin secretion, resulting in impaired glucose tolerance. The pancreatic islets' responses to glucose, sulfonylureas (SUs) and arginine vasopressin (AVP) were well maintained. To specify the PVN neuron subpopulation targeted by Bmal1, the expression of neuropeptides was examined. In these knockout (KO) mice, the mRNA expression of Avp in the PVN was selectively decreased, and the plasma AVP concentration was also decreased. However, fasting suppressed Avp expression in both KO and Cre mice. These results demonstrate that PVN BMAL1 maintains Avp expression in the PVN and release to the circulation, possibly providing islet β-cells with more AVP. This action helps enhance insulin release and, consequently, glucose tolerance. In contrast, the circadian variation of Avp expression is regulated by feeding, but not by PVN BMAL1.
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Affiliation(s)
- Masanori Nakata
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Parmila Kumari
- Department of Biotechnology, University of Wroclaw, Plac Uniwersytecki 1, 50-137 Wroclaw, Poland;
| | - Rika Kita
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Nanako Katsui
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Yuriko Takeuchi
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Tomoki Kawaguchi
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Toshiya Yamazaki
- Department of Health Sciences, Kansai University of Health Sciences, Wakaba 2-11-1, Kumatoricho, Sennan-gun, Osaka 590-0482, Japan;
| | - Boyang Zhang
- Department of Physiology, Wakayama Medical University School of Medicine, Kimiidare 811-1, Wakayama 641-8509, Japan; (R.K.); (N.K.); (Y.T.); (T.K.); (B.Z.)
| | - Shigeki Shimba
- Laboratory of Health Science, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabshi 274-8555, Japan;
| | - Toshihiko Yada
- Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe 650-0047, Japan;
- Division of Diabetes, Metabolism and Endocrinology, Kobe University Graduate School of Medicine, Kusunokicho 7-5-1, Chuou-ku, Kobe 650-0017, Japan
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14
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Warmer F, Tanaka K, Xanthopoulos P, Nunami M, Nakata M, Beidler CD, Bozhenkov SA, Beurskens MNA, Brunner KJ, Ford OP, Fuchert G, Funaba H, Geiger J, Gradic D, Ida K, Igami H, Kubo S, Langenberg A, Laqua HP, Lazerson S, Morisaki T, Osakabe M, Pablant N, Pasch E, Peterson B, Satake S, Seki R, Shimozuma T, Smith HM, Stange T, Stechow AV, Sugama H, Suzuki Y, Takahashi H, Tokuzawa T, Tsujimura T, Turkin Y, Wolf RC, Yamada I, Yanai R, Yasuhara R, Yokoyama M, Yoshimura Y, Yoshinuma M, Zhang D. Impact of Magnetic Field Configuration on Heat Transport in Stellarators and Heliotrons. Phys Rev Lett 2021; 127:225001. [PMID: 34889640 DOI: 10.1103/physrevlett.127.225001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/30/2021] [Accepted: 09/20/2021] [Indexed: 06/13/2023]
Abstract
We assess the magnetic field configuration in modern fusion devices by comparing experiments with the same heating power, between a stellarator and a heliotron. The key role of turbulence is evident in the optimized stellarator, while neoclassical processes largely determine the transport in the heliotron device. Gyrokinetic simulations elucidate the underlying mechanisms promoting stronger ion scale turbulence in the stellarator. Similar plasma performances in these experiments suggests that neoclassical and turbulent transport should both be optimized in next step reactor designs.
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Affiliation(s)
- Felix Warmer
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - K Tanaka
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Plasma and Quantum Science and Engineering, Kasuga, Fukuoka 816-8580, Japan
| | - P Xanthopoulos
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - M Nunami
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
- Nagoya University, Graduate School of Science, Nagoya 464-8603, Japan
| | - M Nakata
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - C D Beidler
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - S A Bozhenkov
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - M N A Beurskens
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - K J Brunner
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - O P Ford
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - G Fuchert
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - H Funaba
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - J Geiger
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - D Gradic
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - K Ida
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - H Igami
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - S Kubo
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- Nagoya University, Graduate School of Science, Nagoya 464-8603, Japan
| | - A Langenberg
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - H P Laqua
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - S Lazerson
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - T Morisaki
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - M Osakabe
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - N Pablant
- Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - E Pasch
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - B Peterson
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - S Satake
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - R Seki
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - T Shimozuma
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - H M Smith
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - T Stange
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - A V Stechow
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - H Sugama
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - Y Suzuki
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - H Takahashi
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - T Tokuzawa
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - T Tsujimura
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - Y Turkin
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - R C Wolf
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
| | - I Yamada
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - R Yanai
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - R Yasuhara
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - M Yokoyama
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - Y Yoshimura
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
| | - M Yoshinuma
- National Institute for Fusion Science, National Institutes on Natural Sciences, Toki, 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - D Zhang
- Max-Planck-Institut für Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald, Germany
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15
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Hisa N, Ito H, Kotake R, Akimoto S, Suzuki Y, Takahashi Y, Igarashi C, Ono S, Harada H, Nakata M, Abe T. P–192 Efficacy of postponement of intracytoplasmic sperm injection timing after spindle visualization for Metaphase I oocytes. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does postponement of intracytoplasmic sperm injection (ICSI) timing after spindle visualization for Metaphase I (MI) oocytes improve developmental outcomes of embryos?
Summary answer
Postponement of ICSI timing after spindle visualization for MI oocytes improves blastocyst utility rates.
What is known already
Immature oocytes are generally considered poor developmental outcomes. Meanwhile, the timing of ICSI adjusted by using spindle visualization can improve clinically utilized embryos and live birth rates, but these outcomes remain inferior to those of mature oocytes. In in vitro maturation culture, nuclear maturation is thought to occur before the completion of cytoplasmic maturation, and in immature oocytes, synchronization of nuclear and cytoplasmic maturation may be insufficient for ICSI immediately after spindle visualization.
Study design, size, duration
Data for this retrospective cohort study were obtained 672 oocytes retrieved under mild stimulation cycles using letrozole, in patients aged younger than 39 years between April 2017 and October 2020.Written informed consent was obtained from all patients. This study was approved by the institutional review board.
Participants/materials, setting, methods
As a control group, 464 MetaphaseIIoocytes that underwent ICSI immediately after visualization of the spindle were used. In group A, 103 MI oocytes underwent ICSI immediately after the first polar body release and spindle visualization, and in group B, 105 oocytes underwent ICSI 2–3 hours after spindle visualization. The primary outcomes were fertilization rates, degeneration, cleavage, embryo blastocyst formation, and utility rates. Outcomes were compared among the three groups.
Main results and the role of chance
The baseline fertilization rates of each group (control, A, B) were 82.3% (382/464), 73.8% (76/103), and 83.8% (88/105), respectively. The rate was significantly lower in group A than in the control group (P < 0.05), and also tended to be lower in group A than in group B, although the difference was not significant. There was no significant difference in abnormal fertilization rates, oocyte degeneration rates, cleavage rates, and blastocyst formation rates among the three groups. [control, A, B: abnormal fertilization rate: 4.3% (20/464), 8.7% (9/103), 4.8% (5/105); oocyte degeneration rates: 3.0% (14/464), 1.9% (2/103), 3.8% (4/105); cleavage rates: 95.6% (307/321), 93.8% (61/65), 98.7% (74/75); blastocyst formation rates: 58.6% (177/302), 51.7% (31/60), 55.4% (41/74), respectively]. The blastocyst utility rates of control group and group B were significantly higher than in group A [41.7% (126/302), 45.9% (34/74), 26.7% (16/60), respectively] (P < 0.05). There were no significantly different outcomes between the control group and group B.
Limitations, reasons for caution
The optimal timing of ICSI for MI oocyte cannot be determined by the presence or absence of spindles. In addition, the postponement duration we set was based on reports which reported on final oocyte maturation, and further investigation is needed to establish the optimal ICSI timing for MI oocytes.
Wider implications of the findings: In MI oocytes, postponement of ICSI timing after spindle visualization is essential for synchronization of the nucleus and cytoplasmic maturation.
Trial registration number
none
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Affiliation(s)
- N Hisa
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | - H Ito
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | - R Kotake
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | - S Akimoto
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | - Y Suzuki
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | | | - C Igarashi
- Shinjuku ART Cinic, IVF lab, Tokyo, Japan
| | - S Ono
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - H Harada
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - M Nakata
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - T Abe
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
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16
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Takahashi Y, Hisa N, Kotake R, Suzuki Y, Akimoto S, Igarashi C, Ito H, Harada H, Nakata M, Ono S, Abe T. P–609 The chances of one live birth rates after first ART cycle in minimal stimulation cycle IVF with letrozole only and natural cycle IVF. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Are one live birth rates (LBRs) similar in minimal stimulation cycle IVF with letrozole only and natural cycle IVF for the first ART cycle?
Summary answer
LBRs after first ART cycle in minimal stimulation cycle IVF with letrozole only are superior to natural cycle IVF.
What is known already
The addition of letrozole to gonadotropins in ovarian stimulation (OS) may reduce the risk of OHSS, but there is no significant difference were reported in ongoing pregnancy rate or number of oocytes retrieved in the letrozole + FSH group compared to the FSH only. No differences were also reported in clinical pregnancy rates or number of mature oocytes in the additional of letrozole in an GnRH antagonist protocol group compared to the GnRH antagonist group. There are no previous study comparing LBRs after first ART cycle in minimal stimulation cycle IVF with letrozole and natural cycle IVF.
Study design, size, duration
Data for this retrospective cohort study were obtained 643 women, 30–39 years of age started their first ART cycle at one private fertility clinic between January 2016- December 2019.
Participants/materials, setting, methods
A total of 643 women were scheduled their first oocyte retrieval cycle. 118 women started with letrozole (LE) and 525 women started natural cycle (NC). The main strategy for OS in our center is minimal stimulation and natural cycle IVF. Patients consulted with gynecologists to determine their treatment plan based on patients’ preference or their menstrual cycle. All pregnancies generated from oocyte retrieval during the first IVF cycle including fresh and frozen-thaw cycles were registered.
Main results and the role of chance
The number of retrieved oocytes and the normal fertilization rates were significantly higher in the LE than NC (4.4 vs 3.4, 77.6% vs 71.1%), p < 0.05 respectively). There was no significant difference in the clinical pregnancy rates (CPRs) per embryo transfer (ET) (fresh cleavage stage ET: 32.9% vs 28.0%, frozen-thaw blastocyst ET: 39.4% vs 44.9% ns). However, the CPRs and LBRs per oocyte retrieval (OR) were significantly higher in the LE group (39.0% vs 28.6, 33.9% vs 21.9%, p < 0.05 respectively). In a subsequent regression analyses, LBRs per OR of LE was significantly higher than NC as well. (adjusted OR = 1.63 (95% CI: 1.02–2.58, p = 0.041).
Limitations, reasons for caution
The strength of the present study was the use of a large cohort of women who underwent minimal stimulation IVF with letrozole only. Although our results are promising, limited by retrospective cohort study. These interpretations prompted the need for a perspective cohort study to evaluate the efficacy of letrozole.
Wider implications of the findings: When comparing minimal stimulation IVF with letrozole only and natural cycle IVF, we found significantly higher LBRs per OR in minimal stimulation IVF with letrozole only, despite similar CPRs per ET.
Trial registration number
none
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Affiliation(s)
- Y Takahashi
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - N Hisa
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - R Kotake
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - Y Suzuki
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - S Akimoto
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - C Igarashi
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - H Ito
- Shinjuku ART Clinic, IVF laboratory, Tokyo, Japan
| | - H Harada
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - M Nakata
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - S Ono
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
| | - T Abe
- Shinjuku ART Clinic, Department of Gynecology, Tokyo, Japan
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17
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Miwa Y, Nakata M, Takimoto H, Chambers JK, Uchida K. Spontaneous intranasal tumours in rabbits: 7 cases (2007-2019). J Small Anim Pract 2020; 62:379-384. [PMID: 33260252 DOI: 10.1111/jsap.13268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 09/30/2020] [Accepted: 10/26/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Neoplasms that arise in the nasal cavity are reported infrequently in rabbits. This case series aims to review and determine the clinical behaviour of neoplasms in the nasal cavity in rabbits. MATERIALS AND METHODS A retrospective study was conducted on seven pet rabbits diagnosed with intranasal tumours to describe the clinical and histopathological findings and prognoses after surgery and/or radiotherapy. RESULTS The most common clinical signs were nasal snoring when breathing, nasal discharge, and subsequent dyspnoea and anorexia. Six different histopathological types of tumours were diagnosed: intranasal adenocarcinoma, squamous cell carcinoma, osteosarcoma, carcinoid tumour, osteoma, and lymphoma. Skull radiography only revealed the abnormalities in three of seven cases but on CT, the intranasal masses were more clearly identified in all cases. All cases received tumour resection through rhinostomy and four cases received radiotherapy after surgery. In the six cases with a known outcome, the survival time after surgery was more than 13 months. CLINICAL SIGNIFICANCE This case series provides an insight of the behavior of intranasal neoplasms in rabbits. Surgical treatment and radiotherapy could improve their clinical sings.
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Affiliation(s)
- Y Miwa
- Miwa Exotic Animal Hospital, 1-25-5, Komagome, Toshima-ku, Tokyo, Japan, 170003.,Veterinary Medical Center, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, Japan, 1138657
| | - M Nakata
- Miwa Exotic Animal Hospital, 1-25-5, Komagome, Toshima-ku, Tokyo, Japan, 170003
| | - H Takimoto
- Miwa Exotic Animal Hospital, 1-25-5, Komagome, Toshima-ku, Tokyo, Japan, 170003
| | - J K Chambers
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, Japan, 1138657
| | - K Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, Japan, 1138657
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18
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Senoo K, Nakata M, Teramukai S, Yamamoto T, Nishimura H, Matoba S. Gender differences in patterns of relationship between body mass index and AF incidence. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0506] [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
Obesity is reportedly associated with the new incidence of atrial fibrillation (AF). However, gender differences in patterns of relationship between body mass index (BMI) and the risk of AF are unknown.
Methods
We analyzed 21,382 middle-aged Japanese subjects (10923 men, 10459 women) without AF from a cohort of employees undergoing annual health examinations, with a follow-up period of 4.8±3.7 years. We examined the relationship between BMI at baseline to AF incidence in unadjusted and adjusted analyses. This relationship was also studied using linear and quadratic models.
Results
AF had developed in 137 subjects (119 men; mean age, 54.4±8.2 years; incidence, 2.19 and 0.38 per 1000 person-years in men and women, respectively). In multivariable Cox proportional-hazard models, increasing age (hazard ratio [HR], 2.72 per year; 95% CI, 2.22 to 3.33; P<0.001), male gender (HR, 3.28; 95% CI, 1.86 to 5.76; P<0.001) and BMI (HR, 1.08; 95% CI, 1.02 to 1.15; P=0.007) were associated with the new incidence of AF in all cohorts. The shape of the BMI-incident AF relationship showed a linear association in women and a J-shaped association in men. (Figure) In particular, a U-shaped relationship was observed in young men aged 40–49, with increased risk among those with higher BMI and with very low BMI. In analyses adjusted for comorbidities and risk factors for CV disease, the U-shaped AF incidence versus BMI curves were not attenuated, suggesting that other genetic or congenital factors may mediate this relationship.
Conclusion
Our results indicate that the shape of the BMI-incident AF relation differs by sex and in particular a U-shaped relationship was observed in young men.
Patterns of relation among BMI and AF
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Senoo
- Kyoto Prefectural University of Medicine, Department of Cardiac Arrhythmia Research and Innovation, Kyoto, Japan
| | - M Nakata
- Kyoto Prefectural University of Medicine, Department of Biostatistics, Kyoto, Japan
| | - S Teramukai
- Kyoto Prefectural University of Medicine, Department of Biostatistics, Kyoto, Japan
| | - T Yamamoto
- Medical Corporation Soukenkai, Nishimura Clinic, Kyoto, Japan
| | - H Nishimura
- Medical Corporation Soukenkai, Nishimura Clinic, Kyoto, Japan
| | - S Matoba
- Kyoto Prefectural University of Medicine, Department of Cardiovascular medicine, Kyoto, Japan
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19
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Tatsuoka T, Noie T, Noro T, Nakata M, Yamada H, Harihara Y. Dorsal Pancreatic Artery—a Study of Its Detailed Anatomy for Safe Pancreaticoduodenectomy. Indian J Surg 2020. [DOI: 10.1007/s12262-020-02255-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
AbstractEarly division of the dorsal pancreatic artery (DPA) or its branches to the uncinate process during pancreaticoduodenectomy (PD) in addition to early division of the gastroduodenal artery and inferior pancreaticoduodenal artery should be performed to reduce blood loss by completely avoiding venous congestion. However, the significance of early division of DPA or its branches to the uncinate process has not been reported. The aim of this study was to investigate the anatomy of DPA and its branches to the uncinate process using the currently available high-resolution dynamic computed tomography (CT) as the first step to investigate the significance of DPA in the artery-first approach during PD. Preoperative dynamic thin-slice CT data of 160 consecutive patients who underwent hepato–pancreato–biliary surgery were examined focusing on the anatomy of DPA and its branches to the uncinate process. DPA was recognized in 103 patients (64%); it originated from the celiac axis or its branches in 70 patients and from the superior mesenteric artery or its branches in 34 patients. The branches to the uncinate process were visualized in 82 patients (80% of those with DPA), with diameters of 0.5–1.5 mm in approximately 80% of the 82 patients irrespective of DPA origin. DPA branches to the uncinate process were recognized using high-resolution CT in approximately half of the patients.
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20
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Ida K, Nakata M, Tanaka K, Yoshinuma M, Fujiwara Y, Sakamoto R, Motojima G, Masuzaki S, Kobayashi T, Yamasaki K. Transition between Isotope-Mixing and Nonmixing States in Hydrogen-Deuterium Mixture Plasmas. Phys Rev Lett 2020; 124:025002. [PMID: 32004031 DOI: 10.1103/physrevlett.124.025002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/09/2019] [Indexed: 06/10/2023]
Abstract
The transition between isotope-mixing and nonmixing states in hydrogen-deuterium mixture plasmas is observed in the isotope (hydrogen and deuterium) mixture plasma in the Large Helical Device. In the nonmixing state, the isotope density ratio profile is nonuniform when the beam fueling isotope species differs from the recycling isotope species and the profile varies significantly depending on the ratio of the recycling isotope species, although the electron density profile shape is unchanged. The fast transition from nonmixing state to isotope-mixing state (nearly uniform profile of isotope ion density ratio) is observed associated with the change of electron density profile from peaked to hollow profile by the pellet injection near the plasma periphery. The transition from nonmixing to isotope-mixing state strongly correlates with the increase of turbulence measurements and the transition of turbulence state from TEM to ion temperature gradient is predicted by gyrokinetic simulation.
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Affiliation(s)
- K Ida
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - M Nakata
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - K Tanaka
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
| | - M Yoshinuma
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - Y Fujiwara
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
| | - R Sakamoto
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - G Motojima
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
| | - S Masuzaki
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - T Kobayashi
- National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Gifu 509-5292, Japan
| | - K Yamasaki
- Research Institute for Applied Mechanics Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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21
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Miwa Y, Nakata M, Takimoto H, Chambers JK, Uchida K. Spontaneous oral tumours in 18 rabbits (2005–2015). J Small Anim Pract 2019; 62:156-160. [DOI: 10.1111/jsap.13082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 08/04/2019] [Accepted: 08/30/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Miwa
- Miwa Exotic Animal Hospital Tokyo 170003 Japan
- Veterinary Medical Center The University of Tokyo Tokyo 1138657 Japan
| | - M. Nakata
- Miwa Exotic Animal Hospital Tokyo 170003 Japan
| | - H. Takimoto
- Miwa Exotic Animal Hospital Tokyo 170003 Japan
| | - J. K. Chambers
- Department of Veterinary Pathology Graduate School of Agricultural and Life Science, The University of Tokyo Tokyo 1138657 Japan
| | - K. Uchida
- Department of Veterinary Pathology Graduate School of Agricultural and Life Science, The University of Tokyo Tokyo 1138657 Japan
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22
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Le HT, Sato F, Kohsaka A, Bhawal UK, Nakao T, Muragaki Y, Nakata M. Dec1 Deficiency Suppresses Cardiac Perivascular Fibrosis Induced by Transverse Aortic Constriction. Int J Mol Sci 2019; 20:ijms20194967. [PMID: 31597354 PMCID: PMC6802004 DOI: 10.3390/ijms20194967] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/03/2019] [Accepted: 10/05/2019] [Indexed: 12/20/2022] Open
Abstract
Cardiac fibrosis is a major cause of cardiac dysfunction in hypertrophic hearts. Differentiated embryonic chondrocyte gene 1 (Dec1), a basic helix–loop–helix transcription factor, has circadian expression in the heart; however, its role in cardiac diseases remains unknown. Therefore, using Dec1 knock-out (Dec1KO) and wild-type (WT) mice, we evaluated cardiac function and morphology at one and four weeks after transverse aortic constriction (TAC) or sham surgery. We found that Dec1KO mice retained cardiac function until four weeks after TAC. Dec1KO mice also revealed more severely hypertrophic hearts than WT mice at four weeks after TAC, whereas no significant change was observed at one week. An increase in Dec1 expression was found in myocardial and stromal cells of TAC-treated WT mice. In addition, Dec1 circadian expression was disrupted in the heart of TAC-treated WT mice. Cardiac perivascular fibrosis was suppressed in TAC-treated Dec1KO mice, with positive immunostaining of S100 calcium binding protein A4 (S100A4), alpha smooth muscle actin (αSMA), transforming growth factor beta 1 (TGFβ1), phosphorylation of Smad family member 3 (pSmad3), tumor necrosis factor alpha (TNFα), and cyclin-interacting protein 1 (p21). Furthermore, Dec1 expression was increased in myocardial hypertrophy and myocardial infarction of autopsy cases. Taken together, our results indicate that Dec1 deficiency suppresses cardiac fibrosis, preserving cardiac function in hypertrophic hearts. We suggest that Dec1 could be a new therapeutic target in cardiac fibrosis.
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Affiliation(s)
- Hue Thi Le
- Department of Physiology, Wakayama Medical University, Wakayama 641-8509, Japan; (H.T.L.); (A.K.); (M.N.)
- Department of Physiology, Hanoi Medical University, Hanoi 100000, Vietnam
| | - Fuyuki Sato
- Department of Pathology, Wakayama Medical University, Wakayama 641-8509, Japan;
- Correspondence: ; Tel.: +81-73-441-0634; Fax: +81-73-446-3781
| | - Akira Kohsaka
- Department of Physiology, Wakayama Medical University, Wakayama 641-8509, Japan; (H.T.L.); (A.K.); (M.N.)
| | - Ujjal K. Bhawal
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Matsudo 271-8587, Japan;
| | - Tomomi Nakao
- Department of Physiology, Wakayama Medical University, Wakayama 641-8509, Japan; (H.T.L.); (A.K.); (M.N.)
| | - Yasuteru Muragaki
- Department of Pathology, Wakayama Medical University, Wakayama 641-8509, Japan;
| | - Masanori Nakata
- Department of Physiology, Wakayama Medical University, Wakayama 641-8509, Japan; (H.T.L.); (A.K.); (M.N.)
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23
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Okita R, Shimizu K, Nojima Y, Saisho S, Nakata M. JAK-STAT inhibitor overcomes interferon γ-reduced, NK cell-mediated cytotoxicity in non-small-cell lung cancer cells. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz269.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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24
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Katsurada K, Nakata M, Saito T, Zhang B, Maejima Y, Nandi SS, Sharma NM, Patel KP, Kario K, Yada T. Central Glucagon-like Peptide-1 Receptor Signaling via Brainstem Catecholamine Neurons Counteracts Hypertension in Spontaneously Hypertensive Rats. Sci Rep 2019; 9:12986. [PMID: 31537818 PMCID: PMC6753091 DOI: 10.1038/s41598-019-49364-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 08/21/2019] [Indexed: 02/07/2023] Open
Abstract
Glucagon-like peptide-1 receptor (GLP-1R) agonists, widely used to treat type 2 diabetes, reduce blood pressure (BP) in hypertensive patients. Whether this action involves central mechanisms is unknown. We here report that repeated lateral ventricular (LV) injection of GLP-1R agonist, liraglutide, once daily for 15 days counteracted the development of hypertension in spontaneously hypertensive rats (SHR). In parallel, it suppressed urinary norepinephrine excretion, and induced c-Fos expressions in the area postrema (AP) and nucleus tractus solitarius (NTS) of brainstem including the NTS neurons immunoreactive to dopamine beta-hydroxylase (DBH). Acute administration of liraglutide into fourth ventricle, the area with easy access to the AP and NTS, transiently decreased BP in SHR and this effect was attenuated after lesion of NTS DBH neurons with anti-DBH conjugated to saporin (anti-DBH-SAP). In anti-DBH-SAP injected SHR, the antihypertensive effect of repeated LV injection of liraglutide for 14 days was also attenuated. These findings demonstrate that the central GLP-1R signaling via NTS DBH neurons counteracts the development of hypertension in SHR, accompanied by attenuated sympathetic nerve activity.
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Affiliation(s)
- Kenichi Katsurada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan.,Division of Cardiovascular Medicine, Department of Internal Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan.,Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Masanori Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan.,Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, 641-8509, Japan
| | - Toshinobu Saito
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan.,Division of Cardiovascular Medicine, Department of Internal Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
| | - Boyang Zhang
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yuko Maejima
- Department of Pharmacology, Fukushima Medical University School of Medicine, Fukushima, 960-1295, Japan
| | - Shyam S Nandi
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Neeru M Sharma
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Kaushik P Patel
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, NE 68198-5850, USA
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Internal Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan. .,Center for Integrative Physiology, Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan. .,Division of System Neuroscience, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuou-ku, Kobe, 650-0017, Japan.
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25
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Yang Y, Zhang B, Nakata M, Nakae J, Mori M, Yada T. Islet β-cell-produced NUCB2/nesfatin-1 maintains insulin secretion and glycemia along with suppressing UCP-2 in β-cells. J Physiol Sci 2019; 69:733-739. [PMID: 31228099 PMCID: PMC10717817 DOI: 10.1007/s12576-019-00689-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 06/11/2019] [Indexed: 01/29/2023]
Abstract
Nesfatin-1 is a hypothalamic anorexigenic peptide processed from nucleobindin 2 (NUCB2). Central and peripheral administration of NUCB2/nesfatin-1 enhances glucose metabolism and insulin release. NUCB2/nesfatin-1 is also localized in pancreatic islets, while its function remains unknown. To explore the role of pancreatic β-cell-produced NUCB2/nesfatin-1, we developed pancreatic β-cell-specific NUCB2 knockout (βNUCB2 KO) mice and NUCB2 gene knockdown (shNUCB2) MIN6 β-cell line. In βNUCB2 KO mice, casual blood glucose was elevated from 12 weeks of age. In a glucose tolerance test at 12 weeks, insulin secretion at 15 min was reduced and blood glucose at 2 h increased in βNUCB2 KO mice fasted 8 h. In islets isolated from βNUCB2 KO mice, high glucose-stimulated insulin secretion (GSIS) was impaired. In shNUCB2 MIN6 cells, GSIS was reduced and UCP-2 mRNA expression was elevated. These results show impaired GSIS possibly associated with UCP-2 overexpression in NUCB2-silenced β-cells, suggesting that β-cell-produced NUCB2/nesfatin-1 maintains GSIS and thereby glycemia.
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Affiliation(s)
- Yifei Yang
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
- Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan
- Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Boyang Zhang
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
- Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, 641-8509, Japan
| | - Masanori Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan
- Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, 641-8509, Japan
| | - Jun Nakae
- Center for Medical Science, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtawara, 324-8501, Japan
| | - Masatomo Mori
- Kitakanto Molecular Novel Research Institute for Obesity and Metabolism, Midori, Gunma, 379-2311, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, 329-0498, Japan.
- Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan.
- Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan.
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26
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Okamoto S, Sato T, Tateyama M, Kageyama H, Maejima Y, Nakata M, Hirako S, Matsuo T, Kyaw S, Shiuchi T, Toda C, Sedbazar U, Saito K, Asgar NF, Zhang B, Yokota S, Kobayashi K, Foufelle F, Ferré P, Nakazato M, Masuzaki H, Shioda S, Yada T, Kahn BB, Minokoshi Y. Activation of AMPK-Regulated CRH Neurons in the PVH is Sufficient and Necessary to Induce Dietary Preference for Carbohydrate over Fat. Cell Rep 2019; 22:706-721. [PMID: 29346768 DOI: 10.1016/j.celrep.2017.11.102] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/28/2017] [Accepted: 11/29/2017] [Indexed: 12/28/2022] Open
Abstract
Food selection is essential for metabolic homeostasis and is influenced by nutritional state, food palatability, and social factors such as stress. However, the mechanism responsible for selection between a high-carbohydrate diet (HCD) and a high-fat diet (HFD) remains unknown. Here, we show that activation of a subset of corticotropin-releasing hormone (CRH)-positive neurons in the rostral region of the paraventricular hypothalamus (PVH) induces selection of an HCD over an HFD in mice during refeeding after fasting, resulting in a rapid recovery from the change in ketone metabolism. These neurons manifest activation of AMP-activated protein kinase (AMPK) during food deprivation, and this activation is necessary and sufficient for selection of an HCD over an HFD. Furthermore, this effect is mediated by carnitine palmitoyltransferase 1c (CPT1c). Thus, our results identify the specific neurons and intracellular signaling pathway responsible for regulation of the complex behavior of selection between an HCD and an HFD. VIDEO ABSTRACT.
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Affiliation(s)
- Shiki Okamoto
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Second Department of Internal Medicine (Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology), Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Nakagami-gun, Okinawa 903-0215, Japan
| | - Tatsuya Sato
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Michihiro Tateyama
- Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Division of Biophysics and Neurobiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Haruaki Kageyama
- Department of Nutrition, Faculty of Health Care, Kiryu University, 606-7 Kasakake-cho Azami, Midori, Gunma 379-2392, Japan
| | - Yuko Maejima
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Masanori Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Satoshi Hirako
- Department of Health and Nutrition, University of Human Arts and Sciences, 1288 Magome, Iwatsuki-ku, Saitama-shi, Saitama 339-8539, Japan
| | - Takashi Matsuo
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Division of Neurology, Respirology, Endocrinology, and Metabolism, Department of Internal Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - Sanda Kyaw
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Department of Physiology, University of Medicine 1, Yangon, Myanmar
| | - Tetsuya Shiuchi
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Chitoku Toda
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Udval Sedbazar
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Kumiko Saito
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Nur Farehan Asgar
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Boyang Zhang
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Shigefumi Yokota
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Kenta Kobayashi
- Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Section of Viral Vector Development, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Fabienne Foufelle
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France
| | - Pascal Ferré
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France
| | - Masamitsu Nakazato
- Division of Neurology, Respirology, Endocrinology, and Metabolism, Department of Internal Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - Hiroaki Masuzaki
- Second Department of Internal Medicine (Endocrinology, Diabetes and Metabolism, Hematology, Rheumatology), Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Nakagami-gun, Okinawa 903-0215, Japan
| | - Seiji Shioda
- Division of Peptide Drug Innovation, Global Research Center for Innovative Life Science, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
| | - Barbara B Kahn
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - Yasuhiko Minokoshi
- Division of Endocrinology and Metabolism, Department of Homeostatic Regulation, National Institute for Physiological Sciences, National Institute of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan; Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan.
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Hayata E, Nakata M, Oji A, Takano M, Nagasaki S, Morita M. Sonographic diagnosis of vasa previa using four-dimensional spatiotemporal image correlation. Ultrasound Obstet Gynecol 2019; 53:701-702. [PMID: 29808626 DOI: 10.1002/uog.19100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 05/22/2018] [Indexed: 06/08/2023]
Affiliation(s)
- E Hayata
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - M Nakata
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - A Oji
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - M Takano
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - S Nagasaki
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - M Morita
- Department of Obstetrics and Gynecology, Toho University School of Medicine, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
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Yoshioka H, Shimbo T, Tanaka Y, Hori A, Nakata M, Yoshikawa N, Yoshida K, Uesugi Y, Yamamoto K. EP-1588 The preliminary result of combination of chemoradiotherapy and arterial infusion for bladder cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32008-0] [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: 10/26/2022]
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Nakata M, Nojima Y, Nanba K, Saisho S, Shimizu K. P2.16-36 Adjuvant Chemotherapy is Effective for Completely Resected Stage IB Non-Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1511] [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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Santoso P, Nakata M, Ueta Y, Yada T. Suprachiasmatic vasopressin to paraventricular oxytocin neurocircuit in the hypothalamus relays light reception to inhibit feeding behavior. Am J Physiol Endocrinol Metab 2018; 315:E478-E488. [PMID: 28174180 DOI: 10.1152/ajpendo.00338.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Light synchronizes the body's circadian rhythms by modulating the master clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus. In modern lifestyles that run counter to normal circadian rhythms, the extended and/or irregular light exposure impairs circadian rhythms and, consequently, promotes feeding and metabolic disorders. However, the neuronal pathway through which light is coupled to feeding behavior is less elucidated. The present study employed the light exposure during the dark phase of the day in rats and observed its effect on neuronal activity and feeding behavior. Light exposure acutely suppressed food intake and elevated c-Fos expression in the AVP neurons of SCN and the oxytocin (Oxt) neurons of paraventricular nucleus (PVN) in the hypothalamus. The light-induced suppression of food intake was abolished by blockade of the Oxt receptor in the brain. Retrograde tracer analysis demonstrated the projection of SCN AVP neurons to the PVN. Furthermore, intracerebroventricular injection of AVP suppressed food intake and increased c-Fos in PVN Oxt neurons. Intra-PVN injection of AVP exerted a stronger anorexigenic effect than intracerebroventriclar injection. AVP also induced intracellular Ca2+ signaling and increased firing frequency in Oxt neurons in PVN slices. These results reveal the novel neurocircuit from SCN AVP to PVN Oxt that relays light reception to inhibition of feeding behavior. This light-induced neurocircuit may serve as a pathway for forming the circadian feeding rhythm and linking irregular light exposure to arrhythmic feeding and, consequently, obesity and metabolic diseases.
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Affiliation(s)
- Putra Santoso
- Department of Physiology, Division of Integrative Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi , Japan
| | - Masanori Nakata
- Department of Physiology, Division of Integrative Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi , Japan
| | - Yoichi Ueta
- Department of Physiology, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Toshihiko Yada
- Department of Physiology, Division of Integrative Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi , Japan
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31
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Manita M, Asahi T, Yokota N, Nakata M, Higa N, Tabata K. P274Impact of catheter ablation for atrial fibrillation on clinical outcome in elderly patients hospitalized for acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/12/2022] Open
Affiliation(s)
- M Manita
- Naha City Hospital, Department of Cardiology, Naha, Japan
| | - T Asahi
- Naha City Hospital, Department of Cardiology, Naha, Japan
| | - N Yokota
- Naha City Hospital, Department of Cardiology, Naha, Japan
| | - M Nakata
- Naha City Hospital, Department of Cardiology, Naha, Japan
| | - N Higa
- Naha City Hospital, Department of Cardiology, Naha, Japan
| | - K Tabata
- Naha City Hospital, Department of Cardiology, Naha, Japan
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Takano M, Nakata M, Nagasaki S, Ueyama R, Morita M. Assessment of diastolic function of normal fetal heart using dual-gate Doppler. Ultrasound Obstet Gynecol 2018; 52:238-242. [PMID: 28741751 DOI: 10.1002/uog.18821] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 04/07/2017] [Revised: 06/09/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVES The ratio of mitral peak early diastolic filling to early diastolic mitral annular velocity (E/e') reflects diastolic cardiac function in adults. Dual-gate Doppler (DD) enables measurements of E/e' in the same heart beat. This study was designed to assess the utility of the DD method for measurement of fetal E/e' and determine reference ranges for normal fetuses. METHODS This prospective study comprised normal singleton pregnancies undergoing fetal echocardiography between 16 and 36 weeks of gestation. According to the DD method, E-wave velocity on pulsed-wave Doppler and e'-wave on tissue Doppler imaging were measured simultaneously on an apical or basal four-chamber view, and fetal E/e' was calculated. Spearman's correlation coefficient was used to assess the relationship between gestational age (GA) and E-wave and e'-wave velocities and E/e'. RESULTS A total of 133 pregnancies were included in this study and all E/e' measurements were successful. Significant correlation was observed between GA and both left ventricular (LV) E/e' (r s = -0.666, P < 0.001) and right ventricular (RV) E/e' (r s = -0.607, P < 0.001). The regression equations for bilateral E/e' were: LV-E/e' = 17.341 - 0.631GA + 0.008 × GA2 (mean ± SD, R 2 = 0.440 ± 1.333); and RV-E/e' = 19.156 - 0.794GA + 0.012GA2 (R 2 = 0.419 ± 1.329). CONCLUSIONS Bilateral E/e' of normal fetuses, measured using the DD method, decreased with GA, which is considered to be related to myocardial maturity. DD is a useful and convenient method for evaluating fetal E/e' in order to assess diastolic function in the prenatal period. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- M Takano
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Tokyo, Japan
| | - M Nakata
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Tokyo, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
| | - S Nagasaki
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Tokyo, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
| | - R Ueyama
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Tokyo, Japan
| | - M Morita
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Tokyo, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
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Takano M, Nakata M. Reply. Ultrasound Obstet Gynecol 2018; 52:285. [PMID: 30095239 DOI: 10.1002/uog.19158] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- M Takano
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Ota City, Tokyo, 143-8541, Japan
| | - M Nakata
- Department of Obstetrics and Gynecology, Toho University Graduate School of Medicine, Ota City, Tokyo, 143-8541, Japan
- Department of Obstetrics and Gynecology, Toho University Omori Medical Center, Tokyo, Japan
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Kikuchi T, Shiraishi T, Nakata M, Iidaka K, Fujita M, Keida T, Ohira H. P2725Effect of distal protection for ST-elevation myocardial infarction in high risk patients of microvascular obstruction by magnetic resonance imaging. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2725] [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: 11/15/2022] Open
Affiliation(s)
- T Kikuchi
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - T Shiraishi
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - M Nakata
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - K Iidaka
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - M Fujita
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - T Keida
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
| | - H Ohira
- Edogawa Hospital, Department of Cardiology, Tokyo, Japan
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Zhang B, Nakata M, Nakae J, Ogawa W, Yada T. Central insulin action induces activation of paraventricular oxytocin neurons to release oxytocin into circulation. Sci Rep 2018; 8:10415. [PMID: 29991705 PMCID: PMC6039480 DOI: 10.1038/s41598-018-28816-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/15/2018] [Indexed: 12/11/2022] Open
Abstract
Oxytocin neurons in the paraventricular nucleus (PVN) of hypothalamus regulate energy metabolism and reproduction. Plasma oxytocin concentration is reduced in obese subjects with insulin resistance. These findings prompted us to hypothesize that insulin serves to promote oxytocin release. This study examined whether insulin activates oxytocin neurons in the PVN, and explored the underlying signaling. We generated the mice deficient of 3-phosphoinositide-dependent protein kinase-1 (PDK1), a major signaling molecule particularly for insulin, specifically in oxytocin neurons (Oxy Pdk1 KO). Insulin increased cytosolic calcium concentration ([Ca2+]i) in oxytocin neurons with larger (≧25 μm) and smaller (<25 μm) diameters isolated from PVN in C57BL/6 mice. In PDK1 Oxy Pdk1 KO mice, in contrast, this effect of insulin to increase [Ca2+]i was markedly diminished in the larger-sized oxytocin neurons, while it was intact in the smaller-sized oxytocin neurons. Furthermore, intracerebroventricular insulin administration induced oxytocin release into plasma in Oxy Cre but not Oxy Pdk1 KO mice. These results demonstrate that insulin PDK1-dependently preferentially activates PVN magnocellular oxytocin neurons to release oxytocin into circulation, possibly serving as a mechanism for the interaction between metabolism and perinatal functions.
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Affiliation(s)
- Boyang Zhang
- Department of Physiology, Division of Integrative Physiology, Faculty of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Masanori Nakata
- Department of Physiology, Division of Integrative Physiology, Faculty of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. .,Department of Physiology, Faculty of Medicine, Wakayama Medical University School of Medicine, 641-8509, Kimiidera 811-1, Wakayama, Wakayama, Japan.
| | - Jun Nakae
- Frontier Medicine on Metabolic Syndrome, Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Wataru Ogawa
- Department of Internal Medicine, Division of Diabetes and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Toshihiko Yada
- Department of Physiology, Division of Integrative Physiology, Faculty of Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. .,Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan.
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Fujino M, Tsuda E, Hirono K, Nakata M, Ichida F, Hata Y, Nishida N, Kurosaki K. The TNNI3 Arg192His mutation in a 13-year-old girl with left ventricular noncompaction. J Cardiol Cases 2018; 18:33-36. [PMID: 30279906 DOI: 10.1016/j.jccase.2018.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/24/2018] [Accepted: 04/02/2018] [Indexed: 10/28/2022] Open
Abstract
Left ventricular noncompaction (LVNC) is a distinct cardiomyopathy that is morphologically characterized by a two-layered myocardium, numerous prominent trabeculations, and deep intertrabecular recesses communicating with the left ventricular cavity. We present a case report regarding the identification of a new mutation in TNNI3 in a patient with LVNC using next-generation sequencing. A 13-year-old girl who had no family history of cardiac disease was hospitalized with dyspnea after exercise and electrocardiographic abnormalities during a school screening. Based on her clinical features, she was diagnosed with LVNC. Via genetic analysis, a TNNI3 heterozygous missense variant was identified in the proband. Although mutations in TNNI3 have been reported in patients with hypertrophic cardiomyopathy and restrictive cardiomyopathy, this is the first report of a mutation in this gene in a patient with LVNC. <Learning objective: We identified a variant in TNNI3 in a patient with isolated left ventricular noncompaction using next-generation sequencing (NGS). Mutations in TNNI3 have been reported in patients with hypertrophic cardiomyopathy and restrictive cardiomyopathy. The use of NGS also results in the identification of multiple genetic variants of unknown significance to the investigated disease.>.
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Affiliation(s)
- Mitsuhiro Fujino
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Etsuko Tsuda
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Keiichi Hirono
- Department of Pediatrics, Graduate School of Medicine, University of Toyama, Toyama, Japan
| | - Masanori Nakata
- Department of Pediatrics, Hyogo Prefectural Awaji Medical Center, Hyogo, Japan
| | - Fukiko Ichida
- Department of Pediatrics, Graduate School of Medicine, University of Toyama, Toyama, Japan
| | - Yukiko Hata
- Department of Legal Medicine, Graduate School of Medicine, University of Toyama, Toyama, Japan
| | - Naoki Nishida
- Department of Legal Medicine, Graduate School of Medicine, University of Toyama, Toyama, Japan
| | - Kenichi Kurosaki
- Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
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Zhang B, Nakata M, Lu M, Nakae J, Okada T, Ogawa W, Yada T. Protective role of AgRP neuron's PDK1 against salt-induced hypertension. Biochem Biophys Res Commun 2018; 500:910-916. [PMID: 29705701 DOI: 10.1016/j.bbrc.2018.04.192] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 04/24/2018] [Indexed: 10/17/2022]
Abstract
In the hypothalamic arcuate nucleus (ARC), orexigenic agouti-related peptide (AgRP) neurons regulate feeding behavior and energy homeostasis. The 3-phosphoinositide-dependent protein kinase-1 (PDK1) in AgRP neurons serves as a major signaling molecule for leptin and insulin, the hormones regulating feeding behavior, energy homeostasis and circulation. However, it is unclear whether PDK1 in AGRP neurons is also involved in regulation of blood pressure. This study explored it by generating and analyzing AgRP neuron-specific PDK1 knockout (Agrp-Pdk1flox/flox) mice and effect of high salt diet on blood pressure in KO and WT mice was analyzed. Under high salt diet feeding, systolic blood pressure (SBP) of Agrp-Pdk1flox/flox mice was significantly elevated compared to Agrp-Cre mice. When the high salt diet was switched to control low salt diet, SBP of Agrp-Pdk1flox/flox mice returned to the basal level observed in Agrp-Cre mice within 1 week. In Agrp-Pdk1flox/flox mice, urinary noradrenalin excretion and NUCB2 mRNA expression in hypothalamic paraventricular nucleus (PVN) were markedly upregulated. Moreover, silencing of NUCB2 in the PVN counteracted the rises in urinary noradrenalin excretions and SBP. These results demonstrate a novel role of PDK1 in AgRP neurons to counteract the high salt diet-induced hypertension by preventing hyperactivation of PVN nesfatin-1 neurons.
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Affiliation(s)
- Boyang Zhang
- Department of Physiology, Jichi Medical University, School of Medicine, Japan
| | - Masanori Nakata
- Department of Physiology, Jichi Medical University, School of Medicine, Japan; Department of Physiology, Wakayama Medical University School of Medicine, Japan.
| | - Ming Lu
- Department of Physiology, Jichi Medical University, School of Medicine, Japan
| | - Jun Nakae
- Frontier Medicine on Metabolic Syndrome, Division of Endocrinology, Metabolism and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Japan
| | - Takashi Okada
- Department of Biochemistry and Molecular Biology, Nippon Medical School, Japan
| | - Wataru Ogawa
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Japan
| | - Toshihiko Yada
- Department of Physiology, Jichi Medical University, School of Medicine, Japan; Center for Integrative Physiology, Division of Integrative Physiology, Kansai Electric Power Medical Research Institute, Japan.
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Ando A, Gantulga D, Nakata M, Maekawa F, Dezaki K, Ishibashi S, Yada T. Weaning stage hyperglycemia induces glucose-insensitivity in arcuate POMC neurons and hyperphagia in type 2 diabetic GK rats. Neuropeptides 2018. [PMID: 29525472 DOI: 10.1016/j.npep.2018.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Hyperphagia triggers and accelerates diabetes, and prevents proper dietary control of glycemia. Inversely, the impact of hyperglycemia on hyperphagia and possible mechanistic cause common for these two metabolic disorders in type 2 diabetes are less defined. The present study examined the precise developmental process of hyperglycemia and hyperphagia and explored the alterations in the hypothalamic arcuate nucleus (ARC), the primary feeding and metabolic center, in Goto-Kakizaki (GK) rats with type 2 diabetes and nearly normal body weight. At mid 3 to 4 weeks of age, GK rats first exhibited hyperglycemia, and then hyperphagia and reduced mRNA expressions for anorexigenic pro-opiomelanocortin (POMC) and glucokinase in ARC. Furthermore, [Ca2+]i responses to high glucose in ARC POMC neurons were impaired in GK rats at 4 weeks. Treating GK rats from early 3 to mid 6 weeks of age with an anti-diabetic medicine miglitol not only suppressed hyperglycemia but ameliorated hyperphagia and restored POMC mRNA expression in ARC. These results suggest that the early hyperglycemia occurring in weaning period may lead to impaired glucose sensing and neuronal activity of POMC neurons, and thereby induce hyperphagia in GK rats. Correction of hyperglycemia in the early period may prevent and/or ameliorate the progression of hyperphagia in type 2 diabetes.
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Affiliation(s)
- A Ando
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan; Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - D Gantulga
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - M Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - F Maekawa
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba-City, Ibaragi 305-8506, Japan
| | - K Dezaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - S Ishibashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan
| | - T Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi 320-0498, Japan; Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
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Nishimura T, Tatsumi E, Nishinaka T, Taenaka Y, Nakata M, Takano H. Prolonged Nonpulsatile Left Heart Bypass Diminishes Vascular Contractility. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200707] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We investigated possible functional changes in the vascular system accompanying the morphological change in prolonged nonpulsatile left heart bypass (LHB). Three adult goats underwent pulsatile LHB. Two weeks postoperatively, the pulsatile ventricular assist device was replaced with a centrifugal pump and nonpulsatile LHB was subsequently conducted for 4 weeks. The mean aortic pulse pressure was 39 and 16 mmHg during the pulsatile and nonpulsatile LHB, respectively. Systemic vascular resistance (SVR) and plasma norepinephrine levels were measured at the end of pulsatile LHB (PUL), and at the end of 1st, 2nd, 3rd, and 4th week of nonpulsatile LHB (NP1w, NP2w, NP3w, NP4w, respectively). At each point, 50 μg/kg nitroglycerin and 1μg/kg norepinephrine were injected and the minimal and maximal values of SVR after injection were calculated as parameters reflecting the vascular tonus and contractility. The SVR and plasma nor epinephrine level did not significantly change during the entire course (SVR: 1106, 895, 982, 920, and 938 dyne·sec·cm−5; norepinephrine level: 0.3, 0.2, 0.1, 0.2, and 0.1 ng/ml; at PUL, NP1w, NP2w, NP3w, and NP4w, respectively). The minimal value of SVR after nitroglycerin injection remained unchanged, indicating that vascular tonus was stable during the entire course (618, 687, 623, 560, 653 dyne·sec·cm−5, respectively). In contrast, the maximal value of SVR after norepinephrine injection at NP3w and NP4w (1695 and 1759 yne·sec·cm−5) became significantly reduced compared to that at PUL (2346 dyne·sec·cm−5). These results indicated that prolonged nonpulsatile left heart bypass did not affect the vascular tonus, but significantly diminished the vascular contractility.
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Affiliation(s)
- T. Nishimura
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - E. Tatsumi
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - T. Nishinaka
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - Y Taenaka
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - M. Nakata
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
| | - H. Takano
- Department of Artificial Organs, National Cardiovascular Center Research Institute, Osaka - Japan
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Iwasaki Y, Sendo M, Dezaki K, Hira T, Sato T, Nakata M, Goswami C, Aoki R, Arai T, Kumari P, Hayakawa M, Masuda C, Okada T, Hara H, Drucker DJ, Yamada Y, Tokuda M, Yada T. GLP-1 release and vagal afferent activation mediate the beneficial metabolic and chronotherapeutic effects of D-allulose. Nat Commun 2018; 9:113. [PMID: 29317623 PMCID: PMC5760716 DOI: 10.1038/s41467-017-02488-y] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 12/05/2017] [Indexed: 12/29/2022] Open
Abstract
Overeating and arrhythmic feeding promote obesity and diabetes. Glucagon-like peptide-1 receptor (GLP-1R) agonists are effective anti-obesity drugs but their use is limited by side effects. Here we show that oral administration of the non-calorie sweetener, rare sugar d-allulose (d-psicose), induces GLP-1 release, activates vagal afferent signaling, reduces food intake and promotes glucose tolerance in healthy and obese-diabetic animal models. Subchronic d-allulose administered at the light period (LP) onset ameliorates LP-specific hyperphagia, visceral obesity, and glucose intolerance. These effects are blunted by vagotomy or pharmacological GLP-1R blockade, and by genetic inactivation of GLP-1R signaling in whole body or selectively in vagal afferents. Our results identify d-allulose as prominent GLP-1 releaser that acts via vagal afferents to restrict feeding and hyperglycemia. Furthermore, when administered in a time-specific manner, chronic d-allulose corrects arrhythmic overeating, obesity and diabetes, suggesting that chronotherapeutic modulation of vagal afferent GLP-1R signaling may aid in treating metabolic disorders. The sweetener D-allulose has beneficial metabolic effects in animal models, but its mechanism of action was unclear. Here the authors report that D-allulose triggers GLP-1 release in the gut and GLP-1R signaling on vagal afferents, counteracting arrhythmic overeating, obesity and diabetes.
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Affiliation(s)
- Yusaku Iwasaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Mio Sendo
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Katsuya Dezaki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Tohru Hira
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Takehiro Sato
- Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Masanori Nakata
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Chayon Goswami
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Ryohei Aoki
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takeshi Arai
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Parmila Kumari
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Masaki Hayakawa
- Graduate School of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Chiaki Masuda
- Department of Biochemistry and Molecular Biology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Takashi Okada
- Department of Biochemistry and Molecular Biology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - Hiroshi Hara
- Research Faculty of Agriculture, Hokkaido University, Kita-9, Nishi-9, Kita-ku, Sapporo, 060-8589, Japan
| | - Daniel J Drucker
- Lunenfeld Tanenbaum Research Institute, Mt. Sinai Hospital, 600 University Avenue TCP5-1004 Mailbox 39, Toronto, ON, M5G 1X5, Canada
| | - Yuichiro Yamada
- Department of Endocrinology, Diabetes and Geriatric Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Masaaki Tokuda
- Faculty of Medicine, Department of Cell Physiology, Kagawa University, 1750-1, Ikenobe, Miki-cho, Kita-gun, Kagawa, 761-0793, Japan
| | - Toshihiko Yada
- Division of Integrative Physiology, Department of Physiology, Jichi Medical University School of Medicine, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. .,Kansai Electric Power Medical Research Institute, 1-5-6 Minatojimaminamimachi, Chuou-ku, Kobe, 650-0047, Japan.
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Sarker KP, Abeyama K, Nishi JI, Nakata M, Tokioka T, Nakajima T, Kitajima I, Maruyama I. Inhibition of Thrombin-induced Neuronal Cell Death by Recombinant Thrombomodulin and E5510, a Synthetic Thrombin Receptor Signaling Inhibitor. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1614331] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryThrombin, a serine protease generated by the activation of the blood coagulation cascade following vessel injury, converts fibrinogen to fibrin, activates platelets and several coagulation factors, and plays a pivotal role in thrombosis and haemostasis. Thrombin acts as a mitogen and apoptosis inducer in a dose-dependent fashion. We have previously shown that thrombin caused proliferation of vascular smooth muscle cells (VSMCs). Here, we show that a low concentration of thrombin caused proliferation of mouse neuroblastoma (Neuro-2a) and human neuroblastoma (NB-1) cells, while higher concentrations affected cell viability in a time-dependent manner. Similar effects were observed when thrombin receptor agonist peptide (SFLLRNPNDKYEPF, TRAP) was applied. The dying cells showed nuclear condensation and fragmentation, suggesting that cell death occurred by apoptosis. The extent to which thrombin induced cell death was significantly attenuated by recombinant thrombomodulin (rTM), or by a minimum functional domain of TM, termed E456. Furthermore, a synthetic compound that inhibits signaling from the thrombin receptor, 4-cyano-5,5-bis (4-methoxyphenyl)-4-pentanoic acid (E5510), and the antioxidant N-acetyl L-cysteine (NAC), efficiently prevented thrombin-induced Neuro-2a cell death. Thus, thrombin inhibitors and antioxidant appear to neutralize thrombin toxicity.
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Abstract
OBJECTIVES Both human and animal studies have suggested that oxytocin may have therapeutic potential in the treatment of schizophrenia. We evaluated the effects of intranasal oxytocin on cognition and its predictive factors in Japanese patients with schizophrenia. METHODS Subjects were 16 chronic schizophrenia patients who underwent intranasal oxytocin treatment for 3 months and were assessed for changes in severity of clinical symptoms and cognitions. Fifteen of the 16 subjects underwent 3-Tesla magnetic resonance imaging. RESULTS Oxytocin significantly reduced scores on the positive and negative syndrome scale, especially on the negative symptoms. As for cognition, there was an improvement of the verbal fluency. Furthermore, the change of the negative score in positive and negative syndrome scale showed a negative correlation with the gray matter volumes of the right insula and left cingulate cortex. CONCLUSIONS Our results indicate that daily administration of intranasal oxytocin may be effective for ameliorating clinical symptoms and cognitive functions in chronic schizophrenia patients, and this improvement may be related to the gray matter volume of the right insula and left cingulate cortex.
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Affiliation(s)
- Miho Ota
- a Department of Mental Disorder Research , National Institute of Neuroscience, National Center of Neurology and Psychiatry , Kodaira , Japan
| | - Sumiko Yoshida
- b Department of Psychiatry , National Center Hospital of Neurology and Psychiatry , Kodaira , Japan
| | - Masanori Nakata
- c Department of Physiology, Division of Integrative Physiology , Jichi Medical University , Shimotsuke , Japan
| | - Toshihiko Yada
- c Department of Physiology, Division of Integrative Physiology , Jichi Medical University , Shimotsuke , Japan
| | - Hiroshi Kunugi
- a Department of Mental Disorder Research , National Institute of Neuroscience, National Center of Neurology and Psychiatry , Kodaira , Japan
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Okita R, Maeda A, Shimizu K, Nojima Y, Saisho S, Nakata M. P2.02-031 Relationship between PD-L1 Expression and EGFR/HER2 Signaling in Non-Small-Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1209] [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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Shimizu K, Okita R, Saisho S, Maeda A, Nojima Y, Nakata M. P2.02-028 Prognostic Value of Cox-2 Expression Differs Depending on CD8+ T Lymphocytes and PD-L1 Expression in Resected Lung Adenocarcinoma. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1206] [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: 11/25/2022]
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Manita M, Nakata M, Higa N, Asahi T, Tabata K. 073_16734-H5 The Impact of Ablation on Clinical Outcomes in Acute Heart Failure syndrome with Atrial Fibrillation. JACC Clin Electrophysiol 2017. [DOI: 10.1016/j.jacep.2017.09.114] [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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Okita R, Maeda A, Yukawa T, Shimizu K, Nojima Y, Saisho S, Nakata M. Survival of non-small cell lung cancer patients predicted from expression of PD-L1, HLA class I and MICA/B on tumor cells. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx390.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kikuchi T, Shiraishi T, Nakata M, Iidaka K, Nakasone T, Fujita M, Keida T, Ohira H. P5566Risk factors for microvascular obstruction assessed by magnetic resonance imaging in patient with ST elevation myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5566] [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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Nakata T, Nakata M. THE RELATIONSHIP BETWEEN SOCIAL SUPPORT AND DISTANCE TO THE PARENTS’ HOUSE IN JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T. Nakata
- Hokusei Gakuen University, Sapporo, Japan,
| | - M. Nakata
- Sapporo Gakuin University, Sapporo, Japan
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Yoshida K, Yamazaki H, Takenaka T, Kotsuma T, Masui K, Komori T, Shimbo T, Yoshikawa N, Yoshioka H, Uesugi Y, Hamada T, Nakata M, Matsutani H, Ueda M, Tsujimoto Y, Tanaka E, Narumi Y. PO-0937: HDR image-guided interstitial brachytherapy for postoperative local recurrent uterine cancer. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31374-9] [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: 10/19/2022]
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Shimbo T, Yoshida K, Yoshikawa N, Yoshioka H, Nakata M, Narumi Y, Komori T, Matsutani H, Hamada T, Uesugi Y. EP-1162: Non surgical breast conserving treatment using a new radiosensitizer. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31598-0] [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: 10/19/2022]
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