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Mizuno K, Okitsu O, Goto M, Kusuhara A, Kusuhara K. Polyvinylpyrrolidone can prevent oolemma lysis caused by abnormal rupture of the plasma membrane in Piezo-ICSI. Hum Cell 2024:10.1007/s13577-024-01061-2. [PMID: 38615310 DOI: 10.1007/s13577-024-01061-2] [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: 08/23/2023] [Accepted: 03/24/2024] [Indexed: 04/15/2024]
Abstract
The aim of this study was to investigate whether it is possible to prevent oolemma lysis after Piezo-assisted intracytoplasmic sperm injection (Piezo-ICSI) caused by abnormal membrane rupture. A total of 489 mature oocytes were obtained from 85 patients who underwent Piezo-ICSI in an infertility clinic. Inseminated oocytes were classified into the following two groups: normal rupture and abnormal rupture, and a portion of abnormally ruptured oocytes was randomly exposed to 7% PVP solution. Normal fertilization rate, degeneration rate, proportion of high-quality embryos on day 3, blastocyst formation, and morphologically high-quality blastocysts were compared. Abnormal rupture was defined as cytoplasmic membrane rupture before piezo pulse driving. Among the abnormal rupture groups, the normal fertilization and degeneration rates were compared between the high-stretched (ruptured at ≥ 50% during oocyte membrane stretching) and low-stretched (< 50% position) oocytes.The degeneration rate was significantly higher in abnormally ruptured oocytes than in normally ruptures oocytes (14.3% vs 1.3%, p < 0.001), and there was no significant difference in embryonic development after fertilization. PVP treatment immediately after oolemma rupture significantly decreased the degeneration rate (6.0% vs 19.7%, p = 0.031) and increased the normal fertilization rate. Similarly, there were no significant differences in the developmental potential. Furthermore, pregnancy outcome data showed no significant differences in pregnancy and live birth rates. The degeneration rate was reduced by treating low-stretched oocytes with PVP.Exposure to polyvinylpyrrolidone (PVP) immediately after abnormal membrane rupture represents an effective strategy to prevent oocyte degeneration. This is the first study to propose a strategy for the prevention of oocyte degeneration in Piezo-ICSI. These findings are expected to reduce the oocyte degeneration rate and increase normal fertilization rate as well as assist patients who can only acquire oocytes with weak plasma membranes.
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Affiliation(s)
| | | | - Mako Goto
- Kusuhara Women's Clinic, Chuo-Ku, Tokyo, Japan
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Kato T, Mizuno K, Nishio H, Matsumoto D, Kamisawa H, Kurokawa S, Nakane A, Maruyama T, Yasui T, Hayashi Y. Dysfunction of the blood–testis barrier in undescended testes and the role of androgens in the blood–testis barrier composition. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00244-0] [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: 02/12/2023]
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Yoh K, Matsumoto S, Sugawara Y, Hirano Y, Iwasawa J, Inoue T, Mizuno K, Kochi W, Amamoto M, Maeda D, Goto K. 394P Research of the algorithm for rare driver genes in non-small cell lung cancer using pathological images and artificial intelligence. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.496] [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: 12/05/2022] Open
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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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Mori-Yoshimura M, Yajima Y, Kimura A, Segawa K, Oya Y, Mizuno K, Noguchi S, Nishino I, Takahashi Y. DISTAL MYOPATHIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mizuno K, Ikeuchi-Takahashi Y, Hattori Y, Onishi H. Preparation and evaluation of conjugate nanogels of glycyl-prednisolone with natural anionic polysaccharides as anti-arthritic delivery systems. Drug Deliv 2021; 28:144-152. [PMID: 33372563 PMCID: PMC7782909 DOI: 10.1080/10717544.2020.1865478] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Although prednisolone (PD) is used as an anti-arthritis drug due to its rapid and strong anti-inflammatory potential, its frequent and large dosing often brings about adverse effects. Therefore, targeting therapy has attracted increasing attention to overcome such adverse effects. In the present study, nanogels (NGs) composed of macromolecule-PD conjugates were developed as a novel targeting delivery system, and their anti-inflammatory potential was examined. Conjugates were prepared by carbodiimide coupling between glycyl-prednisolone (GP) and the natural anionic polysaccharides, alginic acid (AL) and hyaluronic acid (HA). NGs were produced by the evaporation of organic solvent from the conjugate solution. The obtained NGs, named AL-GP-NG and HA-GP-NG, respectively, were examined for particle characteristics, in vitro release, pharmacokinetics, and in vivo efficacy. Both NGs were several hundred nanometers in size, had negative zeta potentials, and several % (w/w) drug contents. They released PD gradually at pH 7.4 and 6. They exhibited fairly good retention in the systemic circulation. In the efficacy examination using rats with adjuvant-induced arthritis, both NGs showed the stronger and more prolonged suppression of paw inflammation than PD alone. These suggested that the present NGs should be possibly useful as anti-arthritis targeting therapeutic systems.
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Affiliation(s)
- Kohei Mizuno
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
| | | | - Yoshiyuki Hattori
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
| | - Hiraku Onishi
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
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Masuda K, Masuda M, Yamanobe Y, Mizuno K, Matsunaga T, Wasano K. Effects on cervical vestibular-evoked myogenic potentials of four clinically used head and neck measurement positions in healthy subjects. Acta Otolaryngol 2021; 141:729-735. [PMID: 34314287 DOI: 10.1080/00016489.2021.1943520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The most reliable head and neck position for cervical vestibular-evoked myogenic potentials (cVEMPs) measurements yet to be determined. AIMS/OBJECTIVES To assess how four body positions used during clinical recordings of cVEMPs affect cVEMP parameters. MATERIAL AND METHOD cVEMPs of 10 healthy subjects (26-50 years old) were recorded in four body positions: A. sitting/head rotated; B. supine/head rotated; C. semi-recumbent/head rotated and elevated; D. supine/head elevated. RESULTS Mean background sternocleidomastoid muscle (SCM) electrical activity was significantly higher in positions C and D than in positions A and B. The latencies of p13 and n23 differed significantly among the four positions. Raw p13-n23 complex amplitude was significantly greater in positions C and D than in A and B. These differences were reduced when amplitudes were corrected by SCM activity. For positions A and B, one and two subjects, respectively, had an abnormal raw asymmetry ratio (AR). After correction, all subjects had normal ARs in all positions. CONCLUSIONS AND SIGNIFICANCE Body positions in which the head is elevated produce a quicker and larger cVEMP response compared to positions in which the head is not elevated. The difference in ARs among positions can be ignored as long as the correction is made.
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Affiliation(s)
- Kanako Masuda
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Masatsugu Masuda
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Department of Otolaryngology, Kyorin University Hospital, Tokyo, Japan
| | - Yoshiharu Yamanobe
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
- Department of Otolaryngology, Keio University Hospital, Tokyo, Japan
| | - Kohei Mizuno
- Department of Rehabilitation, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Tatsuo Matsunaga
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
| | - Koichiro Wasano
- Division of Hearing and Balance Research, National Institute of Sensory Organs, National Hospital Organization Tokyo Medical Center, Tokyo, Japan
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Yang J, Sun Y, Xu F, Liu W, Hayashi T, Mizuno K, Hattori S, Fujisaki H, Ikejima T. Autophagy and glycolysis independently attenuate silibinin-induced apoptosis in human hepatocarcinoma HepG2 and Hep3B cells. Hum Exp Toxicol 2021; 40:2048-2062. [PMID: 34053323 DOI: 10.1177/09603271211017609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE The mechanism of cytotoxicity of silibinin on two human hepatocellular carcinoma (HCC) cell lines, HepG2 (p53 wild-type) and Hep3B cells (p53 null), is examined in relation with the induction of autophagy and phosphorylation of AMP-activated protein kinase (p-AMPK). MATERIALS AND METHODS Levels of apoptosis in relation to the levels of autophagy and those of glycolysis-related proteins, glucose transporter 1/4 (Glut1/4) and hexokinase-II (HK2), in HepG2 and Hep3B cells were examined. RESULTS Silibinin-induced apoptosis was incomplete for HCC cell death in that up-regulated autophagy and/or reduced level of glycolysis, which are induced by silibinin treatment, antagonized silibinin-induced apoptosis. Inhibition of autophagy with 3-methyl adenine (3MA) or blocking of AMP-activated protein kinase (AMPK) activation with Compound C (CC) enhanced silibinin-induced apoptosis. The results confirm that AMPK involved in autophagy as well as in glycolysis remaining with silibinin is responsible for attenuation of silibinin-induced apoptosis. Blocking of AMPK or autophagy contributes to the enhancement of silibinin's cytotoxicity to HepG2 and Hep3B cells. CONCLUSION This study shows that incomplete apoptosis of HCC by silibinin treatment becomes complete by repression of autophagy and/or glycolysis.
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Affiliation(s)
- J Yang
- Department of Pharmacy, 159411The Third People's Hospital of Chengdu, Chengdu, Sichuan, People's Republic of China.,Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China
| | - Y Sun
- Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China
| | - F Xu
- Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China
| | - W Liu
- Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China
| | - T Hayashi
- Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China.,Department of Chemistry and Life Science, School of Advanced Engineering, Kogakuin University, Hachioji, Tokyo, Japan.,Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - K Mizuno
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - S Hattori
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - H Fujisaki
- Nippi Research Institute of Biomatrix, Toride, Ibaraki, Japan
| | - T Ikejima
- Wuya College of Innovation, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China.,Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development, 58575Shenyang Pharmaceutical University, Shenyang, Liaoning, People's Republic of China
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Onishi H, Mizuno K, Ikeuchi-Takahashi Y, Hattori Y. Targeting potential of alginate-glycyl-prednisolone conjugate nanogel to inflamed joints in rats with adjuvant-induced arthritis. J Drug Target 2021; 29:892-899. [PMID: 33641542 DOI: 10.1080/1061186x.2021.1892116] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The efficacy of alginate-glycyl-prednisolone conjugate nanogel (AL-GP-NG) was previously reported to be better than that of prednisolone (PD) alone in arthritic rats. In the present study, novel AL-GP-NG was prepared and its targeting potential was investigated. AL-GP-NG with a PD content of 6.3% (w/w) was obtained and had a slightly larger submicron size and similar zeta potential to that of the previous nanogel. Drug release profiles and pharmacokinetic features were similar to those of the previous nanogel. AL-GP-NG showed prolonged release at weakly acidic and neutral pH and the good systemic retention of total (free + conjugated) PD after an intravenous (i.v.) injection in rats. In animal studies using normal and adjuvant-induced arthritic rats, the distribution of total PD was examined after an i.v. injection. AL-GP-NG achieved a markedly higher drug concentration at inflamed joints than PD alone. Furthermore, ALGP-NG showed specific drug localisation to inflamed joints in arthritic rats, but not in normal rats. Furthermore, specific drug localisation to the joints by AL-GP-NG persisted. Collectively, these results demonstrated the good targeting potential of AL-GP-NG to inflamed joints, suggesting its suitability for the treatment of arthritis.
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Affiliation(s)
- Hiraku Onishi
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
| | - Kohei Mizuno
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
| | | | - Yoshiyuki Hattori
- Department of Drug Delivery Research, Hoshi University, Tokyo, Japan
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Hiramoto A, Suzuki Y, Ali A, Aoki S, Berns L, Fukuda T, Hanaoka Y, Hayato Y, Ichikawa A, Kawahara H, Kikawa T, Koga T, Komatani R, Komatsu M, Kosakai Y, Matsuo T, Mikado S, Minamino A, Mizuno K, Morimoto Y, Morishima K, Naganawa N, Naiki M, Nakamura M, Nakamura Y, Nakano N, Nakano T, Nakaya T, Nishio A, Odagawa T, Ogawa S, Oshima H, Rokujo H, Sanjana I, Sato O, Shibuya H, Sugimura K, Suzui L, Takagi H, Takao T, Tanihara Y, Yasutome K, Yokoyama M. First measurement of
ν¯μ
and
νμ
charged-current inclusive interactions on water using a nuclear emulsion detector. Int J Clin Exp Med 2020. [DOI: 10.1103/physrevd.102.072006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Suzuki Y, Kawamata I, Mizuno K, Murata S. Large Deformation of a DNA‐Origami Nanoarm Induced by the Cumulative Actuation of Tension‐Adjustable Modules. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yuki Suzuki
- Frontier Research Institute for Interdisciplinary SciencesTohoku University 6-3 Aramaki-aza Aoba, Aoba-ku Sendai 980-8578 Japan
- Department of RoboticsGraduate School of EngineeringTohoku University 6-6-01 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Ibuki Kawamata
- Department of RoboticsGraduate School of EngineeringTohoku University 6-6-01 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Kohei Mizuno
- Department of RoboticsGraduate School of EngineeringTohoku University 6-6-01 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8579 Japan
| | - Satoshi Murata
- Department of RoboticsGraduate School of EngineeringTohoku University 6-6-01 Aramaki-Aza Aoba, Aoba-ku Sendai 980-8579 Japan
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Suzuki Y, Kawamata I, Mizuno K, Murata S. Large Deformation of a DNA-Origami Nanoarm Induced by the Cumulative Actuation of Tension-Adjustable Modules. Angew Chem Int Ed Engl 2020; 59:6230-6234. [PMID: 31944509 DOI: 10.1002/anie.201916233] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Indexed: 01/03/2023]
Abstract
Making use of the programmability and structural flexibility of the DNA molecule, a DNA-origami nanoarm capable of undergoing large deformation is constructed. This DNA-origami nanoarm comprised serially repeated tension-adjustable modules, the cumulative actuation of which resulted in a large deformation of the arm structure, which transformed from a linear shape into an arched shape. Combining atomic force microscopy and theoretical analyses based on the mechanics of materials, we demonstrate that the degree of deformation can be systematically controlled by merely replacing a set of strands that is required for the actuation of the module. Moreover, by employing a G-quadruplex-forming sequence for the actuation, we could achieve reversible ion-induced contraction and relaxation of the nanoarm. The adjustability and scalability of this design could enable the production of DNA nanodevices that exhibit large deformation in response to external stimuli.
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Affiliation(s)
- Yuki Suzuki
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki-aza Aoba, Aoba-ku, Sendai, 980-8578, Japan.,Department of Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Ibuki Kawamata
- Department of Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Kohei Mizuno
- Department of Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Satoshi Murata
- Department of Robotics, Graduate School of Engineering, Tohoku University, 6-6-01 Aramaki-Aza Aoba, Aoba-ku, Sendai, 980-8579, Japan
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Kurihara O, Takano M, Yamamoto E, Yonetsu T, Kakuta T, Soeda T, Yan BP, Crea F, Higuma T, Minami Y, Adriaenssens T, Nef HM, Lee H, Mizuno K, Jang IK. P2651Seasonal variations in the pathogenesis of acute coronary syndromes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0972] [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
Seasonal variations in acute coronary syndrome (ACS) has been known with the winter being the peak in incidence and mortality. However, underlying pathophysiology for this variation has not been studied.
Purpose
We sought to compare pathobiology of the culprit lesions assessed by optical coherence tomography (OCT) among the four seasons.
Methods
Patients with ACS who underwent OCT were recruited from 6 countries in the Northern Hemisphere. The prevalence of 3 most common pathologies, plaque rupture, plaque erosion and calcified plaque, and other features of coronary plaques were compared among the four seasons.
Results
In 1113 patients with ACS, 284 (25%) patients were admitted in spring, 243 (22%) patients in summer, 290 (26%) patients in autumn and 296 (27%) patients in winter. The proportion of underlying 3 pathologies was significantly different in each season (prevalence of plaque rupture, plaque erosion, calcified plaque was 50%, 39%, and 11%, respectively in the spring; 44%, 43%, and 13% in the summer; autumn: 49%, 39%, and 12% in the autumn; 57%, 30%, and 13% in the winter; P=0.039). The proportion of plaque rupture was higher in winter but lower in summer, and that of plaque erosion was higher in summer, but lower in winter. Maximum and minimum temperatures on the day of OCT procedure were significantly lower in the plaque rupture group than in the plaque erosion group (P=0.02 and P=0.012, respectively). In the rupture group, the prevalence of hypertension was significantly higher in winter, but in the erosion group, it was not different among the four seasons.
Figure 1. The proportion of culprit lesion characteristics were significantly different among the 4 season groups. (P=0.039) The proportion of plaque rupture was significantly higher in winter but lower in summer. In contrast, the proportion of plaque erosion was higher in summer, but lower in winter.
Conclusions
Seasonal variation of the underlying mechanisms of ACS reflects different pathobiology. The proportion of plaque rupture is highest in winter and the proportion of plaque erosion is highest in summer. A different approach may be needed for the prevention and treatment of ACS depending on the season of its occurrence.
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Affiliation(s)
- O Kurihara
- Massachusetts General Hospital, Cardiology Division, Boston, United States of America
| | - M Takano
- Nippon medical school chiba hokusoh hospital cardiovascular center, Kamakari 1715, Inzai, Chiba, Japan
| | - E Yamamoto
- Massachusetts General Hospital, Cardiology Division, Boston, United States of America
| | - T Yonetsu
- Tokyo Medical and Dental University, Department of Interventional Cardiology, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Division of Cardiovascular Medicine, Ibaraki, Japan
| | - T Soeda
- Nara Medical University, Department of Cardiovascular Medicine, Nara, Japan
| | - B P Yan
- Prince of Wales Hospital, Chinese University of Hong Kong, Division of Cardiology, Department of Medicine and Therapeutics, Hong Kong, Hong Kong
| | - F Crea
- Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - T Higuma
- St. Marianna University, Division of Cardiology, Kawasaki, Japan
| | - Y Minami
- Kitasato University School of Medicine, Department of Cardiovascular Medicine, Sagamihara, Japan
| | - T Adriaenssens
- University Hospitals (UZ) Leuven, Department of Cardiovascular Medicine, Leuven, Belgium
| | - H M Nef
- University of Giessen, Department of Cardiology, Giessen, Germany
| | - H Lee
- Massachusetts General Hospital, Biostatistics Center, Boston, United States of America
| | - K Mizuno
- Mitsukoshi Health and Welfare Foundation, Tokyo, Japan
| | - I K Jang
- Massachusetts General Hospital, Cardiology Division, Boston, United States of America
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Koiwai T, Yamamoto M, Mizuno K, Sato T. 501 Vemurafenib, a BRAF inhibitor, bidirectionally regulates sebum production through an mTOR pathway in differentiated hamster sebocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.551] [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: 11/24/2022]
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15
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Kato T, Mizuno K, Nishio H, Iwatsuki S, Nakane A, Akita H, Okamura T, Yasui T, Hayashi Y. Appropriate management of high-flow priapism based on color Doppler ultrasonography findings in pediatric patients: four case reports and a review of the literature. J Pediatr Urol 2019; 15:187.e1-187.e6. [PMID: 30910454 DOI: 10.1016/j.jpurol.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 01/02/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION High-flow priapism in children is a very rare condition, and there is no clear consensus on its management. High-flow priapism is associated with increased cavernosal blood flow and broadly divided into two groups based on the presence or absence of arteriocavernous fistula in the corpora cavernosa. OBJECTIVE This study aimed to determine the appropriate management of high-flow priapism based on the existence of arteriocavernous fistula using penile color Doppler ultrasonography (CDU) findings in the pediatric population. STUDY DESIGN The cases of four boys aged between 6 and 11 years with high-flow priapism treated between 2009 and 2017 are reported. Two boys had prior perineal trauma, one boy had blunt penile glans trauma, and one had no obvious cause for the condition. All boys initially underwent penile CDU and were treated conservatively or via selective arterial embolization depending upon the presence or absence of an arteriocavernous fistula. RESULTS Penile CDU revealed an arteriocavernous fistula inside the corpus cavernosum penis in two of four boys and increased blood flow inside the corpus spongiosum in the remaining boys. The former two boys underwent selective arterial embolization and one boy underwent repeated embolization because of remaining arteriocavernous fistula feeding from the contralateral cavernosal artery, whereas the boys with no arteriocavernous fistula on CDU were managed conservatively. All boys were successfully treated within 1 month, and they had normal morning erection and no evidence of recurrent priapism at the follow-up. DISCUSSION Unlike low-flow priapism, high-flow priapism is not a medical emergency. Therefore, conservative therapy is an appropriate initial treatment, although selective arterial embolization can be effective for high-flow priapism with arteriocavernous fistula, with a success rate of 97% and no reported complications to date. Penile CDU is an imaging technique that can detect focal areas of turbulent flow with sensitivity close to 100%. This study has several limitations including a small number of cases, limited follow-up duration, and possibility of spontaneous arteriocavernous fistula closure in cases treated by arterial embolization. CONCLUSION Penile CDU could be a reliable tool to diagnose high-flow priapism and detect the presence or absence of arteriocavernous fistula. Although conservative therapy remains the first choice, selective arterial embolization may be an early treatment option when CDU reveals an arteriocavernous fistula.
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Affiliation(s)
- T Kato
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - K Mizuno
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - H Nishio
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - S Iwatsuki
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - A Nakane
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - H Akita
- Department of Urology, Anjo Kosei Hospital, 28 Higashihirokute, Anjo-cho, Anjo, 446-8602, Japan.
| | - T Okamura
- Department of Urology, Anjo Kosei Hospital, 28 Higashihirokute, Anjo-cho, Anjo, 446-8602, Japan.
| | - T Yasui
- Department of Nephro-urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| | - Y Hayashi
- Department of Pediatric Urology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
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Oguma Y, Shiomi H, Nagata K, Okajima K, Morikawa H, Watanabe Y, Mizuno K, Komatsubara K, Hata K. PV-0576 Simulation of EHTR for prostate cancer without monitoring intra-fractional prostate motion. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30996-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
OBJECTIVES To validate the SARC-F questionnaire for sarcopenia screening in musculoskeletal disease setting, and to assess improvements in diagnostic accuracy by adding "EBM" (elderly and body mass index information) to the SARC-F. DESIGN Diagnostic accuracy study. SETTING AND PARTICIPANTS The center involved in this study was located in an urban area of Kobe City, Japan. People with musculoskeletal disease in the knee, hip, or spine who were scheduled for surgical treatment were included. MEASUREMENTS Sarcopenia was evaluated using the Asian Working Group for Sarcopenia (AWGS) and the European Working Group on Sarcopenia in Older People (EWGSOP2), which included bioimpedance, handgrip strength, and gait speed. Patients answered the SARC-F questionnaire and their body mass index was measured. SARC-F and "EBM" information were combined into an original score. The sensitivities, specificities, and areas under the receiver operating characteristic curve (AUC) were estimated and compared to identify sarcopenia. RESULTS A total of 959 patients were included. Sarcopenia by AWGS criteria was identified in 36 (3.8%) patients. SARC-F had a sensitivity of 41.7% and specificity of 68.5%. SARC-F+EBM had a sensitivity of 77.8% and specificity of 69.6%, with substantial improvement in sensitivity (P<0.001). The AUCs for SARC-F and SARC-F+EBM were 0.557 (95% confidence interval [CI] 0.452-0.662) and 0.824 (95% CI 0.762-0.886), respectively (P<0.001). Similar results were obtained when EWGSOP2 criteria were used as the reference standard. CONCLUSION The SARC-F alone is not adequate for finding cases in musculoskeletal disease settings. SARC-F+EBM significantly improved the sensitivity and overall diagnostic accuracy of the SARC-F for screening sarcopenia. SARC-F+EBM is potentially useful for screening sarcopenia in different ethnic and disease settings.
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Affiliation(s)
- N Kurita
- Noriaki Kurita, MD, PhD, FACP, Department of Clinical Epidemiology, Graduate School of Medicine, Fukushima Medical University, Fukushima, Japan, 1 Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan, Phone: +81-24-547-1471; Fax: +81-24-547-1468, E-mail:
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Masuyama Y, Mizuno K, Ozawa H, Ishiwata H, Hatano Y, Ohshima T, Iwasaki T, Hatano M. Extending coherence time of macro-scale diamond magnetometer by dynamical decoupling with coplanar waveguide resonator. Rev Sci Instrum 2018; 89:125007. [PMID: 30599584 DOI: 10.1063/1.5047078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Ultimate sensitivity for quantum magnetometry using nitrogen-vacancy (NV) centers in a diamond is limited by a number of NV centers and coherence time. Microwave irradiation with a high and homogeneous power density for a large detection volume is necessary to achieve a highly sensitive magnetometer. Here, we demonstrate a microwave resonator to enhance the power density of the microwave field and an optical system with a detection volume of 1.4 × 10-3 mm3. The strong microwave field enables us to achieve 48 ns Rabi oscillation which is sufficiently faster than the phase relaxation time of NV centers. This system combined with a decoupling pulse sequence, XY16, extends the spin coherence time (T 2) up to 27 times longer than that with a spin echo method. Consequently, we obtained an AC magnetic field sensitivity of 10.8 pt/ Hz using the dynamical decoupling pulse sequence.
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Affiliation(s)
- Y Masuyama
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - K Mizuno
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - H Ozawa
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - H Ishiwata
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Y Hatano
- Institute for Protein Research, Osaka University, Yamadaoka, Suita, Osaka 5650871, Japan
| | - T Ohshima
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan
| | - T Iwasaki
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - M Hatano
- Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Koyama R, Udagawa H, Sugiyama E, Komuta K, Mori M, Yokoyama T, Sasaki T, Saito H, Ishida H, Nakagawa H, Sekine A, Tamura A, Shingyoji M, Mizuno K, Nakamura A, Kinoshita A, Yamanaka T, Goto K. Randomized phase II study comparing cisplatin + pemetrexed + bevacizumab with carboplatin + paclitaxel + bevacizumab in treatment-naïve advanced non-squamous non-small cell lung cancer (CLEAR study). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mizuno K, Kuriyama M, Morishita M, Araki Y, Ishihara A, Maeda H. P3.16-32 A Study of Postoperative Recurrence in Pathological Stage 1 Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1939] [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: 10/28/2022]
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Suzuki N, Kida K, Doi S, Ito C, Ashikaga K, Matsuda H, Mizuno K, Harada T, Akashi Y. Depending on the difference in left ventricular ejection fraction, lower total cholesterol level can be a prognostic predictor in chronic heart failure patients. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.2070] [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: 11/27/2022]
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Morizane S, Kajita A, Mizuno K, Takiguchi T, Iwatsuki K. Toll-like receptor signalling induces the expression of serum amyloid A in epidermal keratinocytes and dermal fibroblasts. Clin Exp Dermatol 2018; 44:40-46. [PMID: 29770468 DOI: 10.1111/ced.13604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Toll-like receptors (TLRs) play critical roles in innate immune response by sensing pathogen- or damage-associated molecular patterns. Epidermal keratinocytes and dermal fibroblasts also produce proinflammatory cytokines and chemokines under stimulation with TLR ligands. Serum amyloid A (SAA) is an essential factor in the pathogenesis of secondary amyloidosis, and also has immunomodulatory functions. SAA are produced mainly by hepatocytes but also by a variety of cells, including immune cells, endothelial cells, synoviocytes, and epidermal keratinocytes. However, SAA expression in human dermal fibroblasts has not been shown to date. AIM To investigate the effect of TLR ligands on SAA expression in epidermal keratinocytes and dermal fibroblasts. METHODS We investigated whether TLR ligands induce the expression of SAA in normal human epidermal keratinocytes (NHEKs) and normal human dermal fibroblasts (NHDFs) by real-time quantitative PCR and ELISA. The effect of SAA on its own expression in NHDFs was also studied. RESULTS SAA expression was induced via nuclear factor-κB by TLR1/2, 3, 5 and 2/6 ligands in NHEKs. In NHDFs, TLR1/2 and TLR2/6 ligands increased SAA expression. SAA further induced its own expression via TLR1/2 and NF-κB in NHDFs, as previously reported for NHEKs. CONCLUSIONS Our results provide new evidence that the skin's innate immune response contributes to the production of SAA, which might lead to an increased risk of systemic complications such as secondary amyloidosis of recessive dystrophic epidermolysis bullosa.
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Affiliation(s)
- S Morizane
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - A Kajita
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - K Mizuno
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - T Takiguchi
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan.,Department of Plastic Surgery, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - K Iwatsuki
- Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
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Sato T, Yamamoto M, Mizuno K. 1238 A BRAF inhibitor, vemurafenib, enhances insulin-induced sebum production but antagonizes 5α-DHT-mediated sebaceous lipogenesis in hamster sebocytes. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1253] [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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Nishimoto A, Kawakami M, Fujiwara T, Hiramoto M, Honaga K, Abe K, Mizuno K, Ushiba J, Liu M. Feasibility of task-specific brain-machine interface training for upper-extremity paralysis in patients with chronic hemiparetic stroke. J Rehabil Med 2018; 50:52-58. [DOI: 10.2340/16501977-2275] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Sato H, Takahashi K, Nakajima N, Hasegawa G, Mizuno K, Hashimoto S, Ikarashi S, Hayashi K, Honda Y, Yokoyama J, Sato Y, Terai S. Full-layer mucosal histology in achalasia: Histological epithelial wave is characteristic in "pinstripe pattern"-positive achalasia. Neurogastroenterol Motil 2018; 30. [PMID: 28745833 DOI: 10.1111/nmo.13168] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 06/26/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Previously, the mucosal histology in achalasia has only been investigated using superficial biopsy or surgically resected esophageal specimens in end-stage cases. We investigated the histology of the full-layer mucosa in early and advanced achalasia. METHODS Endoscopy was performed for the pinstripe pattern (PSP) (an early achalasia indicator) and dilation and thickening of the mucosa (advanced achalasia indicators). A mucosal entry site for peroral endoscopic myotomy was created using cap-fitted endoscopic mucosal resection to access the full-layer mucosa and the submucosa. KEY RESULTS Mucosal histology was compared between 32 patients with achalasia and 15 controls. Histological esophagitis with findings of inflammatory cell infiltration and dilated intercellular spaces was observed more in patients with achalasia than in controls (87.5% vs 13.3%, P<.001; 84.4% vs 46.7%, P=.049). Muscularis mucosae (MM) atrophy and epithelial wave were only observed in achalasia (40.6% vs 0%, P=.005; 28.1% vs 0%, P=.043). Fibrosis was more common in achalasia, but without statistical significance (31.3% vs 20.0%, P=.503). In achalasia with endoscopic dilation and thickening of the mucosa, MM atrophy was observed histologically, and in cases involving endoscopic PSP, the histological epithelial wave was observed. CONCLUSIONS & INFERENCES Histological findings of esophagitis were observed endoscopically even in early achalasia. Pinstripe pattern corresponds to the epithelial wave observed histologically in achalasia, whereas endoscopic findings in advanced achalasia correspond to MM atrophy. Appropriate management is necessary during early achalasia to prevent progression to advanced achalasia with more severe histological changes.
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Affiliation(s)
- H Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan.,Division of Gastroenterology and Hepatology, Saiseikai Niigata Daini Hospital, Niigata, Japan
| | - K Takahashi
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - N Nakajima
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - G Hasegawa
- Division of Cellular and Molecular Pathology, Department of Cellular Function, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - K Mizuno
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Hashimoto
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Ikarashi
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - K Hayashi
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Y Honda
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - J Yokoyama
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Y Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Terai
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
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Yasuura Y, Terada Y, Sato K, Hayashi S, Mizuno K, Kayata H, Kojima H, Takahashi S, Isaka M, Ohde Y. P3.16-011 Correlation Between Pulmonary Vein Stump Thrombus and Cerebral Infarction After Left Upper Lobectomy of the Lung. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1817] [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: 11/27/2022]
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Kawahata I, Lai Y, Morita J, Kato S, Ohtaku S, Tomioka Y, Tabuchi A, Tsuda M, Sumi-Ichinose C, Kondo K, Izumi Y, Kume T, Akaike A, Ohashi K, Mizuno K, Hasegawa K, Ichinose H, Kobayashi K, Yamakuni T. V-1/CP complex formation is required for genetic co-regulation of adult nigrostriatal dopaminergic function via the RHO/MAL/SRF pathway in vitro and in vivo. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1021] [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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Ishiyama D, Yamada M, Makino A, Iwasaki S, Otobe Y, Shinohara A, Nishio N, Kimura Y, Itagaki A, Koyama S, Yagi M, Matsunaga Y, Mizuno K, Matsushita K. The cut-off point of short physical performance battery score for sarcopenia in older cardiac inpatients. Eur Geriatr Med 2017. [DOI: 10.1016/j.eurger.2017.05.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Takeda T, Iwatsuki S, Hamakawa T, Mizuno K, Kamiya H, Umemoto Y, Kubota H, Kubota Y, Sasaki S, Yasui T. Chromosomal anomalies and sperm retrieval outcomes of patients with non-obstructive azoospermia: a case series. Andrology 2017; 5:473-476. [DOI: 10.1111/andr.12338] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 12/06/2016] [Accepted: 01/16/2017] [Indexed: 11/26/2022]
Affiliation(s)
- T. Takeda
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Iwatsuki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Hamakawa
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Mizuno
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - H. Kamiya
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Umemoto
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - H. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Sasaki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Yasui
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
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Yamaguchi T, Fujiwara T, Takahara T, Takahashi Y, Mizuno K, Ushiba J, Masakado Y, Liu M. P208 The effects of transcutaneous spinal cord stimulation on spinal reciprocal inhibition in healthy persons. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2016.10.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nakajima N, Sato H, Takahashi K, Hasegawa G, Mizuno K, Hashimoto S, Sato Y, Terai S. Muscle layer histopathology and manometry pattern of primary esophageal motility disorders including achalasia. Neurogastroenterol Motil 2017; 29. [PMID: 27699951 DOI: 10.1111/nmo.12968] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/08/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Histopathology of muscularis externa in primary esophageal motility disorders has been characterized previously. We aimed to correlate the results of high-resolution manometry with those of histopathology. METHODS During peroral endoscopic myotomy, peroral esophageal muscle biopsy was performed in patients with primary esophageal motility disorders. Immunohistochemical staining for c-kit was performed to assess the interstitial cells of Cajal (ICCs). Hematoxylin Eosin and Azan-Mallory staining were used to detect muscle atrophy, inflammation, and fibrosis, respectively. KEY RESULTS Slides from 30 patients with the following motility disorders were analyzed: achalasia (type I: 14, type II: 5, type III: 3), one diffuse esophageal spasm (DES), two outflow obstruction (OO), four jackhammer esophagus (JE), and one nutcracker esophagus (NE). ICCs were preserved in high numbers in type III achalasia (n=9.4±1.2 cells/high power field [HPF]), compared to types I (n=3.7±0.3 cells/HPF) and II (n=3.5±1.0 cells/HPF). Moreover, severe fibrosis was only observed in type I achalasia and not in other types of achalasia, OO, or DES. Four of five patients with JE and NE had severe inflammation with eosinophilic infiltration of the esophageal muscle layer (73.8±50.3 eosinophils/HPF) with no epithelial eosinophils. One patient with JE showed a visceral myopathy pattern. CONCLUSIONS & INFERENCES Compared to types I and II, type III achalasia showed preserved ICCs, with variable data regarding DES and OO. In disorders considered as primary esophageal motility disorders, a disease category exists, which shows eosinophilic infiltration in the esophageal muscle layer with no eosinophils in the epithelium.
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Affiliation(s)
- N Nakajima
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - H Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan.,Division of Gastroenterology and Hepatology, Saiseikai Niigata Daini Hospital, Niigata, Japan
| | - K Takahashi
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - G Hasegawa
- Division of Cellular and Molecular Pathology, Department of Cellular Function, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - K Mizuno
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Hashimoto
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Y Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Terai
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
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Iwatsuki S, Sasaki S, Taguchi K, Hamakawa T, Mizuno K, Okada A, Kubota Y, Umemoto Y, Hayashi Y, Yasui T. Effect of obesity on sperm retrieval outcome and reproductive hormone levels in Japanese azoospermic men with and without Klinefelter syndrome. Andrology 2016; 5:82-86. [DOI: 10.1111/andr.12281] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 08/04/2016] [Indexed: 11/30/2022]
Affiliation(s)
- S. Iwatsuki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - S. Sasaki
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Taguchi
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Hamakawa
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Mizuno
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - A. Okada
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Kubota
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Umemoto
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - Y. Hayashi
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - T. Yasui
- Department of Nephro-urology; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
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Sato H, Sato Y, Hashimoto S, Mizuno K, Nakajima N, Terai S. Gastrointestinal: Salvage peroral endoscopic myotomy for outflow obstruction with growing esophageal diverticulum. J Gastroenterol Hepatol 2016; 31:1237. [PMID: 27059011 DOI: 10.1111/jgh.13397] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 03/22/2016] [Indexed: 12/12/2022]
Affiliation(s)
- H Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Y Sato
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Hashimoto
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - K Mizuno
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - N Nakajima
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Terai
- Division of Gastroenterology and Hepatology, Niigata University Medical and Dental Hospital, Niigata, Japan
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Hiyama Y, Wada O, Nakakita S, Mizuno K. Joint awareness after total knee arthroplasty is affected by pain and quadriceps strength. Orthop Traumatol Surg Res 2016; 102:435-9. [PMID: 27052936 DOI: 10.1016/j.otsr.2016.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 02/11/2016] [Accepted: 02/24/2016] [Indexed: 02/02/2023]
Abstract
INTRODUCTION There is a growing interest in the use of patient-reported outcomes to provide a more patient-centered view on treatment. Forgetting the artificial joint can be regarded as the goal in joint arthroplasty. The goals of the study were to describe changes in joint awareness in the artificial joint after total knee arthroplasty (TKA), and to determine which factors among pain, knee range of motion (ROM), quadriceps strength, and functional ability affect joint awareness after TKA. HYPOTHESIS Patients undergoing TKA demonstrate changes in joint awareness and joint awareness is associated with pain, knee ROM, quadriceps strength, and functional ability. PATIENTS AND METHODS This prospective cohort study comprised 63 individuals undergoing TKA, evaluated at 1, 6, and 12 months postoperatively. Outcomes included joint awareness assessed using the Forgotten Joint Score (FJS), pain score, knee ROM, quadriceps strength, and functional ability. RESULTS Fifty-eight individuals completed all postoperative assessments. All measures except for knee extension ROM improved from 1 to 6 months. However, there were no differences in any measures from 6 to 12 months. FJS was affected most greatly by pain at 1 month and by quadriceps strength at 6 and 12 months. DISCUSSION Patients following TKA demonstrate improvements in joint awareness and function within 6 months after surgery, but reach a plateau from 6 to 12 months. Quadriceps strength could contribute to this plateau of joint awareness. LEVEL OF EVIDENCE Prospective cohort study, IV.
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Affiliation(s)
- Y Hiyama
- Department of physical therapy, school of health sciences, Tokyo university of technology, 5-23-22, Nishikamata, Ota-ku, Tokyo, Japan.
| | - O Wada
- Anshin hospital, 1-4-12, Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo, Japan
| | - S Nakakita
- Anshin hospital, 1-4-12, Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo, Japan
| | - K Mizuno
- Anshin hospital, 1-4-12, Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo, Japan
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Sato T, Takata T, Nebashi T, Murakawa S, Mizuno K, Akimoto N. 696 MEK and BRAF inhibitors augment the production and accumulation of sebum in hamster sebocytes. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.738] [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: 10/21/2022]
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Matsuzawa Y, Kamezaki N, Ishihara T, Omuta K, Takeshita H, Goto K, Arata T, Honda H, Kameda K, Kashima Y, Kayo M, Kawazu I, Kodama J, Kumazawa Y, Kuroyanagi K, Mizobuchi K, Mizuno K, Oki K, Watanabe KK, Yamamoto A, Yamashita Y, Yamato T, Hamabata T, Ishizaki A, Dutton PH. Fine-scale genetic population structure of loggerhead turtles in the Northwest Pacific. ENDANGER SPECIES RES 2016. [DOI: 10.3354/esr00724] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Minami Y, Kajimoto K, Sato N, Aokage T, Mizuno M, Asai K, Munakata R, Yumino D, Murai K, Hagiwara N, Mizuno K, Kasanuki H, Takano T. Third heart sound in hospitalised patients with acute heart failure: insights from the ATTEND study. Int J Clin Pract 2015; 69:820-8. [PMID: 25521285 DOI: 10.1111/ijcp.12603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Several previous studies have suggested that detection of a third heart sound (S3) in patients with chronic congestive heart failure is associated with adverse long-term outcomes. However, the short-term prognostic value of identifying an S3 on admission in patients with acute heart failure (AHF) is not well established. We therefore analysed the in-hospital prognostic value of detecting an S3 on admission in hospitalised patients with AHF. METHODS The Acute Decompensated Heart Failure Syndromes (ATTEND) study investigators enrolled 4107 patients hospitalised with AHF. Investigators evaluated the presence or absence of an S3 during routine physical examination. RESULTS On admission to hospital, 1673 patients (41%) had an S3. Patients with an S3 had a higher heart rate, higher serum level of B-type natriuretic peptide and higher creatinine levels than patients without an S3. However, there were no significant differences of systolic blood pressure, serum sodium, haemoglobin, C-reactive protein and total bilirubin between the two groups. Multivariate analysis adjusted for various markers of disease severity revealed that only the presence of an S3 was independently associated with an increase of in-hospital all cause death [adjusted odds ratio (OR), 1.69; 95% confidence interval (CI), 1.19-2.41; p = 0.003] and cardiac death (adjusted OR, 1.66; 95% CI, 1.08-2.54; p = 0.020) among the congestive physical findings related to heart failure (S3, rales, jugular venous distension and peripheral oedema). CONCLUSIONS Detecting an S3 on admission was independently associated with adverse in-hospital outcomes in patients with AHF. Our findings suggest that careful bedside assessment is clinically meaningful.
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Affiliation(s)
- Y Minami
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Kajimoto
- Department of Cardiology, Sensoji Hospital, Tokyo, Japan
| | - N Sato
- Internal Medicine, Cardiology, and Intensive Care Unit, Nippon Medical School Musashi-Kosugi Hospital, Kawasaki, Japan
| | - T Aokage
- Intensive and Cardiac Care Unit, Nippon Medical School, Tokyo, Japan
| | - M Mizuno
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Asai
- Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - R Munakata
- Intensive and Cardiac Care Unit, Nippon Medical School, Tokyo, Japan
| | - D Yumino
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Murai
- Intensive and Cardiac Care Unit, Nippon Medical School, Tokyo, Japan
| | - N Hagiwara
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Mizuno
- Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - H Kasanuki
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - T Takano
- Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
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Sato H, Hasegawa G, Takeuchi M, Takahashi K, Sato Y, Hashimoto S, Mizuno K, Kobayashi M. Education and Imaging. Gastroenterology: A unique endoscopic technique for full-layer histology of jackhammer esophagus. J Gastroenterol Hepatol 2015. [PMID: 26201667 DOI: 10.1111/jgh.12914] [Citation(s) in RCA: 2] [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: 12/09/2022]
Affiliation(s)
- H Sato
- Division of Gastroenterology
| | - G Hasegawa
- Division of Cellular and Molecular Pathology, Department of Cellular Function, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | | | - Y Sato
- Division of Gastroenterology
| | | | | | - M Kobayashi
- Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan
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Takahashi K, Sato H, Sato Y, Takeuchi M, Takeda SR, Mizuno K, Hashimoto S, Hasegawa G, Kobayashi M. Education and Imaging. Gastroenterology: Histopathological investigation of distal esophageal spasm (DES) using per-oral endoscopic myotomy (POEM). J Gastroenterol Hepatol 2015; 30:1113. [PMID: 26094661 DOI: 10.1111/jgh.12926] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 12/29/2022]
Affiliation(s)
- K Takahashi
- Division of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - H Sato
- Division of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Y Sato
- Division of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - M Takeuchi
- Division of Gastroenterology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S-R Takeda
- Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - K Mizuno
- Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - S Hashimoto
- Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - G Hasegawa
- Division of Cellular and Molecular Pathology, Department of Cellular Function, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Kobayashi
- Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan
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Takahashi Y, Fujiwara T, Yamaguchi T, Kawakami M, Mizuno K, Tsuji T, Liu M. The effect of patterned electrical stimulation combined with voluntary contraction on spinal reciprocal inhibition. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1443] [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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Moriuchi S, Yoshizawa S, Mizuno K, Hosoya N, Noda S, Kubota K. Effect of 1,25-dihydroxycholecalciferol on the duodenal villi and alkaline phosphatase in the developing chick embryo. Contrib Nephrol 2015; 22:9-17. [PMID: 6893176 DOI: 10.1159/000385982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Administration of 1,25-(OH)2D3 to developing 14-day chick embryo gave precocious induction of alkaline phosphatase in 20-day chick embryonic duodenum. 1,25-(OH)-2D3-induced alkaline phosphase involved in changes in Km and Vmax values. Furthermore, polyacrylamide gel disc electrophoresis of n-butanol-solubilized alkaline phosphatase from control and 1,25-(OH)2D3-treated chick embryonic duodenum revealed that 1,25-(OH)2D3 involved the transformation of neuraminidase-resistant fast migrating form to the neuraminidase-sensitive faster migrating one. Scanning electron microscopic data showed that the injection of 1,25-(OH)2D3 stimulated the elongation of duodenal microvilli, although there was no effect on the duodenal absorptive epithelial cell height.
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Mizuno K, Shinohara N, Miyakoshi J. In vitro evaluation of genotoxic effects under magnetic resonant coupling wireless power transfer. Int J Environ Res Public Health 2015; 12:3853-63. [PMID: 25853218 PMCID: PMC4410220 DOI: 10.3390/ijerph120403853] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 03/21/2015] [Accepted: 03/31/2015] [Indexed: 11/16/2022]
Abstract
Wireless power transfer (WPT) technology using the resonant coupling phenomenon has been widely studied, but there are very few studies concerning the possible relationship between WPT exposure and human health. In this study, we investigated whether exposure to magnetic resonant coupling WPT has genotoxic effects on WI38VA13 subcloned 2RA human fibroblast cells. WPT exposure was performed using a helical coil-based exposure system designed to transfer power with 85.4% efficiency at a 12.5-MHz resonant frequency. The magnetic field at the positions of the cell culture dishes is approximately twice the reference level for occupational exposure as stated in the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines. The specific absorption rate at the positions of the cell culture dishes matches the respective reference levels stated in the ICNIRP guidelines. For assessment of genotoxicity, we studied cell growth, cell cycle distribution, DNA strand breaks using the comet assay, micronucleus formation, and hypoxanthine-guanine phosphoribosyltransferase (HPRT) gene mutation, and did not detect any significant effects between the WPT-exposed cells and control cells. Our results suggest that WPT exposure under the conditions of the ICNIRP guidelines does not cause detectable cellular genotoxicity.
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Affiliation(s)
- Kohei Mizuno
- Laboratory of Applied Radio Engineering for Humanosphere, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
| | - Naoki Shinohara
- Laboratory of Applied Radio Engineering for Humanosphere, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
| | - Junji Miyakoshi
- Laboratory of Applied Radio Engineering for Humanosphere, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan.
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Saito T, Asai K, Sato S, Takano H, Mizuno K, Shimizu W. Ultrastructural features of cardiomyocytes in dilated cardiomyopathy with initially decompensated heart failure as a predictor of prognosis. Eur Heart J 2014; 36:724-32. [DOI: 10.1093/eurheartj/ehu404] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Easton AC, Lourdusamy A, Havranek M, Mizuno K, Solati J, Golub Y, Clarke TK, Vallada H, Laranjeira R, Desrivières S, Moll GH, Mössner R, Kornhuber J, Schumann G, Giese KP, Fernandes C, Quednow BB, Müller CP. αCaMKII controls the establishment of cocaine's reinforcing effects in mice and humans. Transl Psychiatry 2014; 4:e457. [PMID: 25290264 PMCID: PMC4350526 DOI: 10.1038/tp.2014.97] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 07/18/2014] [Accepted: 08/21/2014] [Indexed: 12/23/2022] Open
Abstract
Although addiction develops in a considerable number of regular cocaine users, molecular risk factors for cocaine dependence are still unknown. It was proposed that establishing drug use and memory formation might share molecular and anatomical pathways. Alpha-Ca(2+)/calmodulin-dependent protein kinase-II (αCaMKII) is a key mediator of learning and memory also involved in drug-related plasticity. The autophosphorylation of αCaMKII was shown to accelerate learning. Thus, we investigated the role of αCaMKII autophosphorylation in the time course of establishing cocaine use-related behavior in mice. We found that αCaMKII autophosphorylation-deficient αCaMKII(T286A) mice show delayed establishment of conditioned place preference, but no changes in acute behavioral activation, sensitization or conditioned hyperlocomotion to cocaine (20 mg kg(-1), intraperitoneal). In vivo microdialysis revealed that αCaMKII(T286A) mice have blunted dopamine (DA) and blocked serotonin (5-HT) responses in the nucleus accumbens (NAcc) and prefrontal cortex after acute cocaine administration (20 mg kg(-1), intraperitoneal), whereas noradrenaline responses were preserved. Under cocaine, the attenuated DA and 5-HT activation in αCaMKII(T286A) mice was followed by impaired c-Fos activation in the NAcc. To translate the rodent findings to human conditions, several CAMK2A gene polymorphisms were tested regarding their risk for a fast establishment of cocaine dependence in two independent samples of regular cocaine users from Brazil (n=688) and Switzerland (n=141). A meta-analysis across both samples confirmed that CAMK2A rs3776823 TT-allele carriers display a faster transition to severe cocaine use than C-allele carriers. Together, these data suggest that αCaMKII controls the speed for the establishment of cocaine's reinforcing effects.
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Affiliation(s)
- A C Easton
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - A Lourdusamy
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
- Faculty of Medicine and Health Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - M Havranek
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland
| | - K Mizuno
- Centre for the Cellular Basis of Behavior, Institute of Psychiatry, King's College London, London, UK
| | - J Solati
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
- Department of Biology, Faculty of Science, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Y Golub
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
| | - T-K Clarke
- Translational Research Laboratory, Department of Psychiatry, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - H Vallada
- Department and Institute of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
| | - R Laranjeira
- UNIAD, Federal University of São Paulo, São Paulo, Brazil
| | - S Desrivières
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - G H Moll
- Department of Child and Adolescent Mental Health, University Clinic Erlangen, Erlangen, Germany
| | - R Mössner
- Department of Psychiatry, University of Bonn, Bonn, Germany
| | - J Kornhuber
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - G Schumann
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - K P Giese
- Centre for the Cellular Basis of Behavior, Institute of Psychiatry, King's College London, London, UK
| | - C Fernandes
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
| | - B B Quednow
- Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland
| | - C P Müller
- MRC Social, Genetic and Developmental Psychiatry Research Centre, Institute of Psychiatry, King's College London, London, UK
- Department of Psychiatry and Psychotherapy, University Hospital, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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Mizuno K, Kurokawa K, Ohkuma S. SY23-1 * BASIC RESEARCH OF ALCOHOL DEPENDENCE. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu052.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ide K, Yamada H, Umegaki K, Mizuno K, Kawakami N, Hagiwara Y, Matsumoto M, Yoshida H, Kim K, Shiosaki E, Yokochi T, Harada K. PP273-MON: Outstanding abstract: Lymphocyte and Plasma Vitamin Levels as Potential Biomarkers for Parkinson’s Disease Progression. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50607-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Fukami Y, Kurumiya Y, Mizuno K, Sekoguchi E, Kobayashi S. Clinical effect of hyperbaric oxygen therapy in adhesive postoperative small bowel obstruction. Br J Surg 2014; 101:433-7. [PMID: 24496799 DOI: 10.1002/bjs.9389] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND Hyperbaric oxygen (HBO) therapy is a controversial treatment for adhesive postoperative small bowel obstruction, with only a few small studies reported. The aim of this study was to assess the clinical value of HBO therapy in the treatment of adhesive postoperative small bowel obstruction. METHODS Between April 2006 and March 2012, all patients with adhesive postoperative small bowel obstruction were treated using either decompression therapy or HBO. Patients undergoing HBO therapy were treated once a day at a pressure of 2·0 atmospheres absolute and received 100 per cent oxygen. Patients showing no clinical and radiological improvement with HBO therapy were converted to decompression therapy by means of a long tube. Medical records were reviewed and outcomes analysed. RESULTS A total of 305 patients were treated, of whom 142 underwent tube decompression therapy during the first 3 years and the remaining 163 had HBO therapy during the last 3 years. The median number of HBO treatments was 3 (range 1-7). A total of 143 patients (87·7 per cent) were treated successfully with HBO without long-tube decompression. HBO therapy was associated with earlier resumption of oral intake (mean 4·7 versus 6·5 days; P = 0·001) and a shorter hospital stay (mean 10·3 versus 14·1 days; P = 0·001). The rate of operation was 7·4 per cent in the HBO group and 14·8 per cent in group treated by decompression alone (P = 0·037). CONCLUSION In this study, HBO therapy was safe for the treatment of adhesive postoperative small bowel obstruction. It reduced the need for surgery and time to recovery as well as the hospital stay.
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Affiliation(s)
- Y Fukami
- Department of Surgery, Toyota Kosei Hospital, 500-1 Josui-cho, Toyota, Aichi 470-0396, Japan
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Fukami Y, Kurumiya Y, Mizuno K, Sekoguchi E, Kobayashi S. Clinical effect of hyperbaric oxygen therapy in adhesive postoperative small bowel obstruction. Br J Surg 2014. [PMID: 24496799 DOI: 10.1002/bjs.9389p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Hyperbaric oxygen (HBO) therapy is a controversial treatment for adhesive postoperative small bowel obstruction, with only a few small studies reported. The aim of this study was to assess the clinical value of HBO therapy in the treatment of adhesive postoperative small bowel obstruction. METHODS Between April 2006 and March 2012, all patients with adhesive postoperative small bowel obstruction were treated using either decompression therapy or HBO. Patients undergoing HBO therapy were treated once a day at a pressure of 2·0 atmospheres absolute and received 100 per cent oxygen. Patients showing no clinical and radiological improvement with HBO therapy were converted to decompression therapy by means of a long tube. Medical records were reviewed and outcomes analysed. RESULTS A total of 305 patients were treated, of whom 142 underwent tube decompression therapy during the first 3 years and the remaining 163 had HBO therapy during the last 3 years. The median number of HBO treatments was 3 (range 1-7). A total of 143 patients (87·7 per cent) were treated successfully with HBO without long-tube decompression. HBO therapy was associated with earlier resumption of oral intake (mean 4·7 versus 6·5 days; P = 0·001) and a shorter hospital stay (mean 10·3 versus 14·1 days; P = 0·001). The rate of operation was 7·4 per cent in the HBO group and 14·8 per cent in group treated by decompression alone (P = 0·037). CONCLUSION In this study, HBO therapy was safe for the treatment of adhesive postoperative small bowel obstruction. It reduced the need for surgery and time to recovery as well as the hospital stay.
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Affiliation(s)
- Y Fukami
- Department of Surgery, Toyota Kosei Hospital, 500-1 Josui-cho, Toyota, Aichi 470-0396, Japan
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