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Matsuda K, Lopez JCA, Rehman S, Misawa M, Suzuki Y, Takeuchi A, Yasumoto M, Hibino K, Roy M, Hanayama R, Ishii K. Differential interference contrast microscopy for cells using hard x-ray holography. APPLIED OPTICS 2018; 57:4795-4801. [PMID: 30118100 DOI: 10.1364/ao.57.004795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
We propose a differential interference contrast method for cells using hard x-ray Gabor holography and knife-edge filtering in the spatial frequency domain, without relying on beam shearing. A phase object is holographically recorded and reconstructed by computer. Interference between the wavefronts of zeroth order weighted by ejπ/2 in the positive frequency region produces a dark image. Similarly, interference between the wavefronts of the zeroth order weighted by ej3π/2 in the negative frequency region produces a bright image. By adding these two intensity distributions, good quality phase-contrast images of 8-μm-diameter polystyrene beads and human HeLa cells were obtained.
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Suzuki Y, Saito J, Kikuchi M, Uematsu M, Fukuhara A, Sato S, Munakata M. Sputum-to-serum hydrogen sulphide ratio as a novel biomarker of predicting future risks of asthma exacerbation. Clin Exp Allergy 2018; 48:1155-1163. [PMID: 29758106 DOI: 10.1111/cea.13173] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/16/2018] [Accepted: 04/22/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Increased level of hydrogen sulphide (H2 S) in sputum is reported to be a new biomarker of neutrophilic airway inflammation in chronic airway disorders. However, the relationship between H2 S and disease activity remains unclear. OBJECTIVE We investigated whether H2 S levels could vary during different conditions in asthma. METHOD H2 S levels in sputum and serum were measured using a sulphide-sensitive electrode in 47 stable asthmatic subjects (S-BA), 21 uncontrolled asthmatic subjects (UC-BA), 26 asthmatic subjects with acute exacerbation (AE-BA) and 15 healthy subjects. Of these, H2 S levels during stable, as well as exacerbation states, were obtained in 13 asthmatic subjects. RESULTS Sputum H2 S levels were significantly higher in the AE-BA subjects compared to the UC-BA and healthy subjects (P < .05). However, serum H2 S levels in the AE-BA subjects were lower than in the S-BA subjects (P < .001) and similar to those in healthy subjects. Thus, the sputum-to-serum ratio of H2 S (H2 S ratio) in the AE-BA subjects was significantly higher than in the S-BA, UC-BA and healthy subjects (P < .05). Among all subjects, sputum H2 S levels showed a trend to decrease with FEV1 %predicted and significantly positive correlations with sputum neutrophils (%), sputum IL-8 and serum IL-8. A multiple linear regression analysis showed that sputum H2 S was independently associated with increased sputum neutrophils (%) and decreased FEV1 %predicted (P < .05). The cut-off level of H2 S ratio to indicate an exacerbation was ≥0.34 (area under the curve; 0.88, with a sensitivity of 81.8% and specificity of 72.7%, P < .001). Furthermore, half of the asthmatic subjects with H2 S ratios higher than the cut-off level experienced asthma exacerbations over the following 3 months after enrolment. CONCLUSIONS The H2 S ratio may provide useful information on predicting future risks of asthma exacerbation, as well as on obstructive neutrophilic airway inflammation as one of the non-Th2 biomarkers, in asthma.
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Sasaki M, Imaoka H, Kan M, Suzuki Y, Kimura G, Umemoto K, Watanabe K, Takahashi H, Hashimoto Y, Ohno I, Mitsunaga S, Ikeda M. Safety of gemcitabine plus nab-paclitaxel in advanced pancreatic cancer patients presenting with hyperbilirubinemia secondary to bile duct obstruction. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yamamoto S, Omi T, Akai H, Kubota Y, Takahashi Y, Suzuki Y, Hirata Y, Yamamoto K, Yukawa R, Horiba K, Yumoto H, Koyama T, Ohashi H, Owada S, Tono K, Yabashi M, Shigemasa E, Yamamoto S, Kotsugi M, Wadati H, Kumigashira H, Arima T, Shin S, Matsuda I. Element Selectivity in Second-Harmonic Generation of GaFeO_{3} by a Soft-X-Ray Free-Electron Laser. PHYSICAL REVIEW LETTERS 2018; 120:223902. [PMID: 29906133 DOI: 10.1103/physrevlett.120.223902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Indexed: 05/27/2023]
Abstract
Nonlinear optical frequency conversion has been challenged to move down to the extreme ultraviolet and x-ray region. However, the extremely low signals have allowed researchers to only perform transmission experiments of the gas phase or ultrathin films. Here, we report second harmonic generation (SHG) of the reflected beam of a soft x-ray free-electron laser from a solid, which is enhanced by the resonant effect. The observation revealed that the double resonance condition can be met by absorption edges for transition metal oxides in the soft x-ray range, and this suggests that the resonant SHG technique can be applicable to a wide range of materials. We discuss the possibility of element-selective SHG spectroscopy measurements in the soft x-ray range.
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Kachulis C, Abe K, Bronner C, Hayato Y, Ikeda M, Iyogi K, Kameda J, Kato Y, Kishimoto Y, Marti L, Miura M, Moriyama S, Nakahata M, Nakano Y, Nakayama S, Okajima Y, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Takeda A, Takenaka A, Tanaka H, Tasaka S, Tomura T, Akutsu R, Kajita T, Kaneyuki K, Nishimura Y, Okumura K, Tsui KM, Labarga L, Fernandez P, Blaszczyk FDM, Gustafson J, Kearns E, Raaf JL, Stone JL, Sulak LR, Berkman S, Tobayama S, Goldhaber M, Elnimr M, Kropp WR, Mine S, Locke S, Weatherly P, Smy MB, Sobel HW, Takhistov V, Ganezer KS, Hill J, Kim JY, Lim IT, Park RG, Himmel A, Li Z, O'Sullivan E, Scholberg K, Walter CW, Ishizuka T, Nakamura T, Jang JS, Choi K, Learned JG, Matsuno S, Smith SN, Amey J, Litchfield RP, Ma WY, Uchida Y, Wascko MO, Cao S, Friend M, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Abe KE, Hasegawa M, Suzuki AT, Takeuchi Y, Yano T, Hayashino T, Hiraki T, Hirota S, Huang K, Jiang M, Nakamura KE, Nakaya T, Quilain B, Patel ND, Wendell RA, Anthony LHV, McCauley N, Pritchard A, Fukuda Y, Itow Y, Murase M, Muto F, Mijakowski P, Frankiewicz K, Jung CK, Li X, Palomino JL, Santucci G, Vilela C, Wilking MJ, Yanagisawa C, Ito S, Fukuda D, Ishino H, Kibayashi A, Koshio Y, Nagata H, Sakuda M, Xu C, Kuno Y, Wark D, Di Lodovico F, Richards B, Tacik R, Kim SB, Cole A, Thompson L, Okazawa H, Choi Y, Ito K, Nishijima K, Koshiba M, Totsuka Y, Suda Y, Yokoyama M, Calland RG, Hartz M, Martens K, Simpson C, Suzuki Y, Vagins MR, Hamabe D, Kuze M, Yoshida T, Ishitsuka M, Martin JF, Nantais CM, Tanaka HA, Konaka A, Chen S, Wan L, Zhang Y, Wilkes RJ, Minamino A. Search for Boosted Dark Matter Interacting with Electrons in Super-Kamiokande. PHYSICAL REVIEW LETTERS 2018; 120:221301. [PMID: 29906152 DOI: 10.1103/physrevlett.120.221301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 03/23/2018] [Indexed: 06/08/2023]
Abstract
A search for boosted dark matter using 161.9 kt yr of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones around the Galactic center and Sun are calculated. Limits are also calculated for a baseline model of boosted dark matter produced from cold dark matter annihilation or decay. This is the first experimental search for boosted dark matter from the Galactic center or the Sun interacting in a terrestrial detector.
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Tsuji Y, Takayama T, Okamura N, Sugiyama J, Oiwa S, Yoshida M, Okagawa Y, Hirayama M, Sato D, Suzuki Y. Intraperitoneal chemotherapy for pancreatic cancer with peritoneal metastases: A single center retrospective analysis of 25 patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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157
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Abe K, Hiraide K, Ichimura K, Kishimoto Y, Kobayashi K, Kobayashi M, Moriyama S, Nakahata M, Norita T, Ogawa H, Sato K, Sekiya H, Takachio O, Takeda A, Tasaka S, Yamashita M, Yang B, Kim N, Kim Y, Itow Y, Kanzawa K, Kegasa R, Masuda K, Takiya H, Fushimi K, Kanzaki G, Martens K, Suzuki Y, Xu B, Fujita R, Hosokawa K, Miuchi K, Oka N, Takeuchi Y, Kim Y, Lee K, Lee M, Fukuda Y, Miyasaka M, Nishijima K, Nakamura S. Direct dark matter search by annual modulation with 2.7 years of XMASS-I data. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.97.102006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Urano T, Castellino FJ, Suzuki Y. Regulation of plasminogen activation on cell surfaces and fibrin. J Thromb Haemost 2018; 16:S1538-7836(22)02204-8. [PMID: 29779246 PMCID: PMC6099326 DOI: 10.1111/jth.14157] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 01/27/2023]
Abstract
The fibrinolytic system dissolves fibrin and maintains vascular patency. Recent advances in imaging analyses allowed visualization of the spatiotemporal regulatory mechanism of fibrinolysis, as well as its regulation by other plasma hemostasis cofactors. Vascular endothelial cells (VECs) retain tissue-type plasminogen activator (tPA) after secretion and maintain high plasminogen (plg) activation potential on their surfaces. As in plasma, the serpin, plasminogen activator inhibitor type 1 (PAI-1), regulates fibrinolytic potential via inhibition of the VEC surface-bound plg activator, tPA. Once fibrin is formed, plg activation by tPA is initiated and effectively amplified on the surface of fibrin, and fibrin is rapidly degraded. The specific binding of plg and tPA to lytic edges of partly degraded fibrin via newly generated C-terminal lysine residues, which amplifies fibrin digestion, is a central aspect of this pathophysiological mechanism. Thrombomodulin (TM) plays a role in the attenuation of plg binding on fibrin and the associated fibrinolysis, which is reversed by a carboxypeptidase B inhibitor. This suggests that the plasma procarboxypeptidase B, thrombin-activatable fibrinolysis inhibitor (TAFI), which is activated by thrombin bound to TM on VECs, is a critical aspect of the regulation of plg activation on VECs and subsequent fibrinolysis. Platelets also contain PAI-1, TAFI, TM, and the fibrin cross-linking enzyme, factor (F) XIIIa, and either secrete or expose these agents upon activation in order to regulate fibrinolysis. In this review, the native machinery of plg activation and fibrinolysis, as well as their spatiotemporal regulatory mechanisms, as revealed by imaging analyses, are discussed.
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Kono M, Akiyama M, Inoue Y, Nomura T, Hata A, Okamoto Y, Takeichi T, Muro Y, McLean W, Shimizu H, Sugiura K, Suzuki Y, Shimojo N. Filaggrin gene mutations may influence the persistence of food allergies in Japanese primary school children. Br J Dermatol 2018; 179:190-191. [DOI: 10.1111/bjd.16375] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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160
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Kimura M, Wada H, Shirahama R, Suzuki Y, Suzuki Y, Maruyama K, Ikeda A, Tanigawa T. 0781 Association Between Snoring and Anxiety in Community-dwelling School Children. Sleep 2018. [DOI: 10.1093/sleep/zsy061.780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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161
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Wada H, Kimura M, Tajima T, Shirahama R, Hayashi T, Suzuki Y, Suzuki Y, Sato S, Maruyama K, Endo M, Ikeda A, Tanigawa T. 0773 Sleep Disordered Breathing Based on Symptoms And RDI in Primary School Children with Implication for Prevalence. Sleep 2018. [DOI: 10.1093/sleep/zsy061.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Akizawa T, Koshikawa S, Takaku F, Urabe A, Akiyama N, Mimura N, Otsubo O, Nihei H, Suzuki Y, Kawaguchi Y, Ota K, Kubo K, Marumo F, Maeda T. Clinical Effect of Recombinant Human Erythropoietin on Anemia Associated with Chronic Renal Failure. A Multiinstitutional Study in Japan. Int J Artif Organs 2018. [DOI: 10.1177/039139888801100507] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Clinical effect and safety of recombinant human erythropoietin (r-HuEPO) were evaluated in 66 hemodialysis patients with intractable anemia. Initially, 50U/kg dry weight (DW) of r-HuEPO was administered intravenously at the end of every hemodialysis procedure for 4 weeks, then the dosage was increased to 100 and 200U/kg DW for poor responders. The patients’ hematocrits rose from 19.8 ± 2.3% (pretreatment) to 30.2 ± 4.9% after 12 weeks. From 206 U of blood transfusion requirement in the 3-month period before the study, only 34 U were needed after treatment. Serum iron and ferritin levels fell significantly during the study, and iron storage was considered to be one of the decisive factors in the response to r-HuEPO. Blood pressure rose in the course of r-HuEPO administration, but uncontrollable hypertension was rarely observed. There was no significant adverse effect of r-HuEPO except for this mild hypertension. These results indicate that r-HuEPO is an excellent therapeutic aid for the anemia associated with chronic renal failure.
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Veit MJ, Arras R, Ramshaw BJ, Pentcheva R, Suzuki Y. Nonzero Berry phase in quantum oscillations from giant Rashba-type spin splitting in LaTiO 3/SrTiO 3 heterostructures. Nat Commun 2018; 9:1458. [PMID: 29654231 PMCID: PMC5899139 DOI: 10.1038/s41467-018-04014-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/26/2018] [Indexed: 11/17/2022] Open
Abstract
The manipulation of the spin degrees of freedom in a solid has been of fundamental and technological interest recently for developing high-speed, low-power computational devices. There has been much work focused on developing highly spin-polarized materials and understanding their behavior when incorporated into so-called spintronic devices. These devices usually require spin splitting with magnetic fields. However, there is another promising strategy to achieve spin splitting using spatial symmetry breaking without the use of a magnetic field, known as Rashba-type splitting. Here we report evidence for a giant Rashba-type splitting at the interface of LaTiO3 and SrTiO3. Analysis of the magnetotransport reveals anisotropic magnetoresistance, weak anti-localization and quantum oscillation behavior consistent with a large Rashba-type splitting. It is surprising to find a large Rashba-type splitting in 3d transition metal oxide-based systems such as the LaTiO3/SrTiO3 interface, but it is promising for the development of a new kind of oxide-based spintronics. Rashba-type splitting is an effective way to manipulate the spin degrees of freedom in a solid without external magnetic field. Here, the authors demonstrate a strong Rashba-type splitting at the interface of LaTiO3 and SrTiO3 which is promising for the development of oxide-based spintronics.
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Naganuma S, Shiina T, Yasuda S, Suzuki Y, Shimizu Y. Histamine-enhanced contractile responses of gastric smooth muscle via interstitial cells of Cajal in the Syrian hamster. Neurogastroenterol Motil 2018; 30:e13255. [PMID: 29159902 DOI: 10.1111/nmo.13255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/28/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Gastric motility is controlled by the autonomic and enteric nervous systems and by interstitial cells of Cajal (ICCs). Although histamine is known to be released from enterochromaffin-like cells in the gastric mucosa, its regulatory roles in gastric motility are still controversial. Therefore, we investigated the functional roles of histamine in gastric motility. METHODS Stomach preparations from hamsters were used because the stomach of hamsters can be easily separated into the forestomach and the glandular stomach. A whole preparation of the stomach was mounted in a Magnus tube, and mechanical responses were recorded using a force transducer. KEY RESULTS Exogenous application of histamine had little effect on contractile activity of the glandular stomach. In contrast, the monoamine evoked regular, periodic contractions in the forestomach. An H1 receptor agonist reproduced the contractile responses and an H1 receptor antagonist blocked histamine-evoked contractions. Atropine and tetrodotoxin did not affect the histamine-evoked contractions. Pretreatment with drugs that inhibit the activity of ICCs abolished the effects of histamine. CONCLUSION & INFERENCES The findings suggest that histamine regulates gastric motility by acting on ICCs via H1 receptors in the hamster. The remarkable ability of histamine to induce rhythmic contractions would be useful for treatment of gastric dysmotility.
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Karayama M, Inui N, Mori K, Kono M, Hozumi H, Suzuki Y, Furuhashi K, Hashimoto D, Enomoto N, Fujisawa T, Nakamura Y, Watanabe H, Suda T. Respiratory impedance is correlated with airway narrowing in asthma using three-dimensional computed tomography. Clin Exp Allergy 2018; 48:278-287. [PMID: 29315896 DOI: 10.1111/cea.13083] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/15/2017] [Accepted: 12/21/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Respiratory impedance comprises the resistance and reactance of the respiratory system and can provide detailed information on respiratory function. However, details of the relationship between impedance and morphological airway changes in asthma are unknown. OBJECTIVE We aimed to evaluate the correlation between imaging-based airway changes and respiratory impedance in patients with asthma. METHODS Respiratory impedance and spirometric data were evaluated in 72 patients with asthma and 29 reference subjects. We measured the intraluminal area (Ai) and wall thickness (WT) of third- to sixth-generation bronchi using three-dimensional computed tomographic analyses, and values were adjusted by body surface area (BSA, Ai/BSA, and WT/the square root (√) of BSA). RESULTS Asthma patients had significantly increased respiratory impedance, decreased Ai/BSA, and increased WT/√BSA, as was the case in those without airflow limitation as assessed by spirometry. Ai/BSA was inversely correlated with respiratory resistance at 5 Hz (R5) and 20 Hz (R20). R20 had a stronger correlation with Ai/BSA than did R5. Ai/BSA was positively correlated with forced expiratory volume in 1 second/forced vital capacity ratio, percentage predicted forced expiratory volume in 1 second, and percentage predicted mid-expiratory flow. WT/√BSA had no significant correlation with spirometry or respiratory impedance. CONCLUSIONS & CLINICAL RELEVANCE Respiratory resistance is associated with airway narrowing.
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Mochimaru T, Fukunaga K, Miyata J, Matsusaka M, Masaki K, Kabata H, Ueda S, Suzuki Y, Goto T, Urabe D, Inoue M, Isobe Y, Arita M, Betsuyaku T. 12-OH-17,18-Epoxyeicosatetraenoic acid alleviates eosinophilic airway inflammation in murine lungs. Allergy 2018; 73:369-378. [PMID: 28857178 DOI: 10.1111/all.13297] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Asthma is characterized by airway inflammation and obstruction with eosinophil infiltration into the airway. Arachidonic acid, an omega-6 fatty acid, is metabolized into cysteinyl leukotriene with pro-inflammatory properties for allergic inflammation, whereas the omega-3 fatty acid eicosapentaenoic acid (EPA) and its downstream metabolites are known to have anti-inflammatory effects. In this study, we investigated the mechanism underlying the counter-regulatory roles of EPA in inflamed lungs. METHODS Male C57BL6 mice were sensitized and challenged by ovalbumin (OVA). After EPA treatment, we evaluated the cell count of Bronchoalveolar lavage fluid (BALF), mRNA expressions in the lungs by q-PCR, and the amounts of lipid mediators by liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based lipidomics. We investigated the effect of the metabolite of EPA by in vivo and in vitro studies. RESULTS Eicosapentaenoic acid treatment reduced the accumulation of eosinophils in the airway and decreased mRNA expression of selected inflammatory mediators in the lung. Lipidomics clarified the metabolomic profile in the lungs. Among EPA-derived metabolites, 12-hydroxy-17,18-epoxyeicosatetraenoic acid (12-OH-17,18-EpETE) was identified as one of the major biosynthesized molecules; the production of this molecule was amplified by EPA administration and allergic inflammation. Intravenous administration of 12-OH-17,18-EpETE attenuated airway eosinophilic inflammation through downregulation of C-C chemokine motif 11 (CCL11) mRNA expression in the lungs. In vitro, this molecule also inhibited the release of CCL11 from human airway epithelial cells stimulated with interleukin-4. CONCLUSION These results demonstrated that EPA alleviated airway eosinophilic inflammation through its conversion into bioactive metabolites. Additionally, our results suggest that 12-OH-17,18-EpETE is a potential therapeutic target for the management of asthma.
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Suzuki Y, Sakuma H, Yamazaki S, Ihara J. Lymphatic tract reconstruction using a pedicled deep inferior epigastric perforator flap. Lymphology 2018; 51:79-84. [PMID: 30253459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We encountered a case in which we used a pedicled deep inferior epigastric perforator(DIEP) flap to repair a lymphatic leak. This case shows that such repairs can lead to the reconstruction of the lymphatic tract and prevent lymphatic leak recurrences. The present report describes a 45-year-old woman with ovarian cancer who underwent hysterectomy, bilateral salpingo-oophorectomy, pelvic lymphadenectomy, para-aortic lymphadenectomy, and omentectomy. She presented with a pelvic lymphocele with lower-extremity swelling. Lymphovenous anastomosis was performed and swelling of the lower extremity abated. However, because of the occurrence of deep vein thrombosis and the recurrence of swelling, we used a 6-cm-long and 14-cm-wideDIEP flap after lymphocele fenestration. The flap was de-epithelialized and fixed into the peritoneum, with the cutis side facing the leakage point. The postoperative course was uneventful, and no recurrence was observed. We obtained good results by providing abundant blood flow to abundant lymph tissue at the fenestration point. It is known that lymphatic vessels can spontaneously connect with each other. We hypothesize that the DIEP flap improved the edema in this case by regenerating the lymphatic network and improving flow into the bridging flap.
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Israel S, Ernst M, Psathaki OE, Drexler HC, Casser E, Suzuki Y, Makalowski W, Fuellen G, Boiani M, Taher L. 66 Unexpected Protein Dynamics During the Oocyte-to-Embryo Transition in Mice: a Mass Spectrometry and RNA Sequencing Tandem Study. Reprod Fertil Dev 2018. [DOI: 10.1071/rdv30n1ab66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The development of a zygote from fertilization through implantation is orchestrated by a series of changes in gene expression at the RNA and protein levels. In mice, the hexagonal-shaped free ribosomes that translate mRNAs into proteins are rare during cleavage and only become abundant at the morula-blastocyst stage. Thus, how well can we understand development by an analysis of transcripts as proxy for the proteins? This question led us to combine mass spectrometry with RNA sequencing, with a long-term aim to illuminate the functional interconnection between transcriptome, proteome, and morphogenetic transitions in mouse embryos. To obtain cellular material in sufficient numbers for a proteomic approach, we recovered B6C3F1 × CD1 fertilized oocytes in vivo after ovarian stimulation, and cultured them in KSOM(aa) medium under 5% CO2 in air. We collected unfertilized oocytes and embryos from 6 pre-implantation developmental stages (pronuclear oocyte, 2-cell embryo, 4-cell embryo, 8-cell embryo, advanced morula, and blastocyst) in triplicates (600 oocytes or embryos per replicate). The protein lysates of these samples were added with equimolar amounts of isotopically labelled F9 embryonal carcinoma cells, resulting in light/heavy (L/H) protein mixtures. These were analysed using LTQ Orbitrap (Thermo Fisher Scientific, Waltham, MA, USA) and Q-Exactive (Thermo Fisher Scientific) instruments to yield L/H ratios for each measured protein, which were compared to transcript levels measured by RNA sequencing using an Illumina HiSEqn 2500 platform (100 oocytes or embryos per replicate; Illumina Inc., San Diego, CA, USA). All statistical analyses were performed in R (https://www.r-project.org/). Collectively, 6976 proteins were detected in at least the F9 cells (precondition for quantifying the L/H ratios in oocytes or embryos). In particular, 4991 proteins were detected in all developmental stages, and 1893 proteins were detected in all replicates. Spearman correlation analysis of each stage relative to unfertilized oocyte revealed distinct proteome and transcriptome developmental profiles. Furthermore, hierarchical clustering of the proteomes identified 2 main clusters (cluster 1: oocyte to 16-cell embryo; cluster 2: blastocyst), which are different from the well-known clusters of the transcriptomes (cluster 1: oocyte to 2-cell embryo; cluster 2: 4-cell embryo to blastocyst). Functional analysis of the genes that are differently expressed across adjacent stages highlighted the developmental roles of DNA damage response and Wnt signalling among the proteins and metabolism and translation among the RNAs. Our data provide new insight into the regulation of the transition from the differentiated oocyte into the embryo, highlighting the different gene identities and different biological processes featured by the proteins that change quantitatively across consecutive developmental stages, compared with mRNAs. The status of the mouse as model system in developmental biology is enriched with a protein dimension, and caution is called for in the use of transcript dynamics as proxy for protein dynamics.
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Hioki I, Onoda K, Shimono T, Shimpo H, Tanaka K, Suzuki Y, Shiku H, Ikeda Y, Yada I, Nishikawa M. A Heparin-coated Circuit Maintains Platelet Aggregability in Response to Shear Stress in an In Vitro Model of Cardiopulmonary Bypass. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryAlterations in platelet aggregability may play a role in the pathogenesis of qualitative platelet defects associated with cardiopulmonary bypass (CPB). We circulated fresh heparinized whole blood through tubing sets coated with heparin (C group, n = 10) and through non-coated sets (N group, n = 10) as a simulated CPB circuit. Shear stress (108 dyne/cm2)-induced platelet aggregation (hSIPA), plasma von Willebrand factor (vWF) activity and platelet glycoprotein (GP) Ib expression were measured, before, during, and after this in vitro set up of circulation. In the two groups, the extent of hSIPA significantly decreased during circulation and was partially restored after circulation. Decreases in the extent of hSIPA were significantly less with use of heparin-coated circuits. There was an equivalent reduction in plasma vWF activity, in the two groups. Expression of platelet surface GP Ib decreased significantly during circulation and recovered after circulation. Reduction of surface GP Ib expression during circulation was significantly less in the C group than that in the N group. Decrease in surface GP Ib expression correlated (r = 0.88 in either group) with the magnitude of hSIPA, in the two groups. The progressive removal of surface GP Ib was mainly attributed to redistribution of GP Ib from the membrane skeleton into the cytoskeleton. Our observations suggest that use of heparin-coated circuits partly blocks the reduction of hSIPA, as a result of a lesser degree of redistribution of GP Ib.
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Suzuki Y, Inaba Y, Kajino K, Tsutsumi T. Surgical effects for OSAS patients in our department. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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171
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Horikawa E, Abe S, Okura K, Suzuki Y, Okawa T, Matsuka Y, Tachibana N, Kawano F. The association between nocturnal trapezius and masseter muscle activity in two female patients with shoulder and neck pain: a case report. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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172
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Shimozawa M, Hashimoto K, Ueda A, Suzuki Y, Sugii K, Yamada S, Imai Y, Kobayashi R, Itoh K, Iguchi S, Naka M, Ishihara S, Mori H, Sasaki T, Yamashita M. Quantum-disordered state of magnetic and electric dipoles in an organic Mott system. Nat Commun 2017; 8:1821. [PMID: 29180819 PMCID: PMC5703743 DOI: 10.1038/s41467-017-01849-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 10/18/2017] [Indexed: 11/24/2022] Open
Abstract
Strongly enhanced quantum fluctuations often lead to a rich variety of quantum-disordered states. Developing approaches to enhance quantum fluctuations may open paths to realize even more fascinating quantum states. Here, we demonstrate that a coupling of localized spins with the zero-point motion of hydrogen atoms, that is, proton fluctuations in a hydrogen-bonded organic Mott insulator provides a different class of quantum spin liquids (QSLs). We find that divergent dielectric behavior associated with the approach to hydrogen-bond order is suppressed by the quantum proton fluctuations, resulting in a quantum paraelectric (QPE) state. Furthermore, our thermal-transport measurements reveal that a QSL state with gapless spin excitations rapidly emerges upon entering the QPE state. These findings indicate that the quantum proton fluctuations give rise to a QSL—a quantum-disordered state of magnetic and electric dipoles—through the coupling between the electron and proton degrees of freedom. The organic material κ-H3(Cat-EDT-TTF)2 has been suggested to exhibit a quantum spin liquid phase in which quantum fluctuations prevent the formation of magnetic order. Here, the authors show that this may be a result of fluctuations of hydrogen atoms, rather than more conventional geometric frustration.
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Nakase H, Motoya S, Matsumoto T, Watanabe K, Hisamatsu T, Yoshimura N, Ishida T, Kato S, Nakagawa T, Esaki M, Nagahori M, Matsui T, Naito Y, Kanai T, Suzuki Y, Nojima M, Watanabe M, Hibi T. Significance of measurement of serum trough level and anti-drug antibody of adalimumab as personalised pharmacokinetics in patients with Crohn's disease: a subanalysis of the DIAMOND trial. Aliment Pharmacol Ther 2017; 46:873-882. [PMID: 28884856 PMCID: PMC5656923 DOI: 10.1111/apt.14318] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/18/2017] [Accepted: 08/18/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND Significance of monitoring adalimumab trough levels and anti-adalimumab antibodies (AAA) for disease outcome in Crohn's disease (CD) patients remained unclear. AIM To evaluate the association of adalimumab trough levels and AAA at week 26 with clinical remission at week 52, the effect of azathiopurine on AAA and factors influencing trough levels in CD patients in the DIAMOND trial. METHODS We performed this study using adalimumab trough levels, AAA at week 26 and 6-thioguanine nucleotide (TGN) in red blood cells at week 12. A multiple regression model and receiver operating analysis was performed to identify factors influencing adalimumab trough levels and AAA, and adalimumab thresholds for predicting disease activity. RESULTS There was a significant difference of adalimumab trough level at week 26 between patients with disease remission and without at week 52 (7.7 ± 3.3 μg/mL vs 5.4 ± 4.3 μg/mL: P <.001). Adalimumab trough level of 5.0 μg/mL yielded optimal sensitivity and specificity for remission prediction (80.2% and 55.6%, respectively). AAA development at week 26 significantly affected remission at week 52 (P = .021), which was strongly associated with adalimumab trough levels. Female gender and increasing body weight were independently associated with low adalimumab trough levels, and female gender was associated with AAA development. A cut-off 6TGN level of >222.5 p mol/8 ×108 RBCs yielded sensitivity (100%) and specificity (60.6%) for AAA negativity. CONCLUSION Adalimumab trough levels and AAA occurrence were significantly associated with clinical remission. Higher 6TGN affected AAA negativity. The combination therapy is beneficial in some relevant aspects for CD patients. (UMIN Registration No. 000005146).
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Kamiya N, Imai Y, Asai-Sato M, Ota Y, Suzuki Y, Ruiz-Yokota N, Matsunaga T, Miyagi E. Efficacy and feasibility of paclitaxel and carboplatin-based concurrent chemoradiotherapy for patients with advanced cervical cancer with renal dysfunction. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx663.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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175
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Yotsukura M, Suzuki Y, Kaseda K, Masai K, Hayashi Y, Hishida T, Ohtsuka T, Asamura H. P1.05-009 Analysis of Postoperative Prognosis in Terms of the Difference Between the Invasive Growth Area and the Total Tumor Diameter. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sakamaki H, Otsuka T, Suzuki M, Omura S, Tanaka H, Suzuki Y, Kuriyama S, Hamada K, Yotsukura M, Kaseda K, Masai K, Hishida T, Asamura H. P1.17-017 Usefulness of FDG-PET for Differentiating Thymic Epithelial Tumors from Malignant Lymphomas. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Suzuki Y, Yotsukura M, Ohtsuka T, Kuriyama S, Sakamaki H, Masai K, Kaseda K, Hishida T, Hayashi Y, Emoto K, Asamura H. P3.13-031 Predicting Factor for the Dissociation of the Diameter Between Radiographical Solid Part and Pathological Invasive Part in Lung Adenocarcinoma. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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178
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Suzuki Y, Tatsuya K, Takamori M, Jin Y. Voxel-based lesion-symptom mapping of language function in left lateral cerebral cortex using logistic regression analysis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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179
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Beppu M, Sawai S, Utsuno E, Ishige T, Itoga S, Isose S, Arai K, Suzuki Y, Kikkawa Y, Uchigaki Y, Nishimura M, Nomura F, Matsushita K, Ichikawa T, Tanaka T, Kuwabara S. Two cases of spinocerebellar ataxia with combined deleterious mutations of two different genes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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180
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Ichinose K, Ishibashi S, Miyashita A, Sanjo N, Uchida K, Suzuki Y, Sekine M, Kobayashi D, Eishi Y, Yokota T. Clinicopathological features of neuromuscular sarcoidosis and its immunoreactivity profiles of P. acne. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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181
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Sato H, Niimi A, Yasuhara T, Isono M, Permata T, Sekine R, Oike T, Nuryadi E, Kakoti S, Yoshimoto Y, Held K, Suzuki Y, Kono K, Miyagawa K, Nakano T, Shibata A. Molecular Mechanism of PD-L1 Upregulation in Cancer Cells after X-Ray Irradiation. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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182
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Ishihara M, Morita A, Hara M, Teramoto H, Shiobara K, Ogawa K, Shiota H, Suzuki Y, Kamei S. Clinical features of 6 cases of mollaret’s meningitis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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183
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Utsugisawa K, Nagane Y, Akaishi T, Suzuki Y, Imai T, Tsuda E, Minami N, Uzawa A, Kawaguchi N, Masuda M, Konno S, Suzuki H, Murai H, Aoki M. Early fast-acting treatment strategy against generalized myasthenia gravis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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184
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Hatori K, Suzuki Y, Izawa N, Tani M, Hattori N, Fujiwara T. Hyoid displacement during the pharyngeal stage of swallowing in patients with Parkinson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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185
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Ishiura H, Matsukawa M, Tanaka M, Higashihara M, Ichikawa Y, Takahashi Y, Abe K, Sakiyama Y, Otsuka M, Ueki A, Kaida K, Mitsui J, Suzuki Y, Sugano S, Shinichi M, Goto J, Tsuji S. Linkage and haplotype analyses of families with benign adult familial myoclonic epilepsy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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186
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Katoh K, Aiba K, Fukushi D, Suzuki Y, Yamada K, Wakamatsu N. Two female patients with Xq27.3q28 deletion and skewed X-inactivation display similar phenotypes as hunter syndrome. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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187
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Aburakawa Y, Sakashita K, Kishi H, Nomura K, Yoshida K, Suzuki Y, Kuroda K, Kimura T. Prognosis and causes of death in myotonic dystrophy type 1 in our hospital. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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188
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Suzuki Y. What is the cause of transverse myelopathy that developed suddenly? Needs accumulation of cases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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189
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Suzuki Y, Wakahara K, Nishio T, Ito S, Hasegawa Y. Airway basophils are increased and activated in eosinophilic asthma. Allergy 2017; 72:1532-1539. [PMID: 28474352 DOI: 10.1111/all.13197] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2017] [Indexed: 02/01/2023]
Abstract
BACKGROUND The impact of basophils on asthma pathogenesis remains largely unexplored, particularly in humans. Here, we evaluated the frequencies and activation status of basophils in the sputum of adult asthmatic patients and related our findings to other parameters of eosinophilic airway inflammation. METHODS We enrolled 44 adult asthmatic patients who were being treated with inhaled corticosteroids (ICS). Analysis of the induced sputum, exhaled nitric oxide fraction (FeNO) measurement, and asthma control test (ACT) were carried out together with standard blood and pulmonary function tests. The cellular composition of the sputum was examined by flow cytometry, and the phenotypes of blood and sputum basophils were compared. RESULTS Basophils were increased in the sputum of asthmatic patients. The expression of CD203c on sputum basophils was significantly higher than that on blood basophils. The percentage of sputum basophils was positively correlated with those of eosinophils and mast cells; it was also correlated with that of blood eosinophils and FeNO. However, sputum basophils were not correlated with serum IgE, lung function, or the percentage of blood basophils. A receiver-operating characteristic (ROC) curve showed the superiority of sputum basophils as a surrogate marker of the percentages of sputum eosinophils compared with absolute numbers of blood eosinophils and FeNO. CONCLUSION The number of activated basophils was increased in the sputum of patients with eosinophilic asthma and correlated with airway and blood eosinophils. Our observations suggest that sputum basophils may serve as a biomarker to monitor new therapeutic approaches for the treatment of eosinophilic asthma.
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Ikenouchi H, Suzuki Y, Nakamura N, Watanabe G, Tsukita K, Nakamura T, Kobayashi J, Ohshima R, Sugeno N, Kuroda H, Aoki M. Paradoxical cerebral embolism after gastrointestinal endoscopy in a patient with Crohn’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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191
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Tobinaga M, Hayashi T, Endo H, Ikeda T, Ohta K, Yonemochi Y, Aida I, Fujinaka H, Suzuki Y, Nakajima T. Construction of a database of the normal GABAA receptor brain SPECT to visualize neuronal loss in neurodegenerative diseases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dobbins TJ, Ida K, Suzuki C, Yoshinuma M, Kobayashi T, Suzuki Y, Yoshida M. A motional Stark effect diagnostic analysis routine for improved resolution of iota in the core of the large helical device. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2017; 88:093518. [PMID: 28964229 DOI: 10.1063/1.4995808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new Motional Stark Effect (MSE) analysis routine has been developed for improved spatial resolution in the core of the Large Helical Device (LHD). The routine was developed to reduce the dependency of the analysis on the Pfirsch-Schlüter (PS) current in the core. The technique used the change in the polarization angle as a function of flux in order to find the value of diota/dflux at each measurement location. By integrating inwards from the edge, the iota profile can be recovered from this method. This reduces the results' dependency on the PS current because the effect of the PS current on the MSE measurement is almost constant as a function of flux in the core; therefore, the uncertainty in the PS current has a minimal effect on the calculation of the iota profile. In addition, the VMEC database was remapped from flux into r/a space by interpolating in mode space in order to improve the database core resolution. These changes resulted in a much smoother iota profile, conforming more to the physics expectations of standard discharge scenarios in the core of the LHD.
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Kouduka M, Tanabe AS, Yamamoto S, Yanagawa K, Nakamura Y, Akiba F, Tomaru H, Toju H, Suzuki Y. Eukaryotic diversity in late Pleistocene marine sediments around a shallow methane hydrate deposit in the Japan Sea. GEOBIOLOGY 2017; 15:715-727. [PMID: 28434198 DOI: 10.1111/gbi.12233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 01/25/2017] [Indexed: 06/07/2023]
Abstract
Marine sediments contain eukaryotic DNA deposited from overlying water columns. However, a large proportion of deposited eukaryotic DNA is aerobically biodegraded in shallow marine sediments. Cold seep sediments are often anaerobic near the sediment-water interface, so eukaryotic DNA in such sediments is expected to be preserved. We investigated deeply buried marine sediments in the Japan Sea, where a methane hydrate deposit is associated with cold seeps. Quantitative PCR analysis revealed the reproducible recovery of eukaryotic DNA in marine sediments at depths up to 31.0 m in the vicinity of the methane hydrate deposit. In contrast, the reproducible recovery of eukaryotic DNA was limited to a shallow depth (8.3 m) in marine sediments not adjacent to the methane hydrate deposit in the same area. Pyrosequencing of an 18S rRNA gene variable region generated 1,276-3,307 reads per sample, which was sufficient to cover the biodiversity based on rarefaction curves. Phylogenetic analysis revealed that most of the eukaryotic DNA originated from radiolarian genera of the class Chaunacanthida, which have SrSO4 skeletons, the sea grass genus Zostera, and the seaweed genus Sargassum. Eukaryotic DNA originating from other planktonic fauna and land plants was also detected. Diatom sequences closely related to Thalassiosira spp., indicative of cold climates, were obtained from sediments deposited during the last glacial period (MIS-2). Plant sequences of the genera Alnus, Micromonas, and Ulmus were found in sediments deposited during the warm interstadial period (MIS-3). These results suggest the long-term persistence of eukaryotic DNA from terrestrial and aquatic sources in marine sediments associated with cold seeps, and that the genetic information from eukaryotic DNA from deeply buried marine sediments associated with cold seeps can be used to reconstruct environments and ecosystems from the past.
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Maruyama M, Higashiguchi T, Ishibashi I, Suzuki Y, Iijima S, Inukai M, Iishi T, Kawasaki N, Kurata N, Chiba M, Teramoto F, Nakamura E, Kayashita J, Tabei I. MON-P241: Feasibility of International Proposed Standardized Enteral Connector for Semi-Solid Formula Feeding. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30848-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hasegawa E, Sato H, Wada Y, Takai K, Wakamatsu A, Nozawa Y, Nakatsue T, Kuroda T, Suzuki Y, Nakano M, Narita I. Characterization of patients with systemic lupus erythematosus who meet the diagnostic criteria for TAFRO syndrome. Lupus 2017; 27:417-427. [DOI: 10.1177/0961203317725589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Purpose TAFRO syndrome is a novel disorder manifesting as fever, anasarca, thrombocytopenia, renal insufficiency and organomegaly, and its etiology has not been clarified. The aim of this study was to elucidate similarities and differences between systemic lupus erythematosus (SLE) and TAFRO syndrome. Methods We examined 46 consecutive patients diagnosed with SLE and determined whether they meet the proposed diagnostic criteria for TAFRO syndrome (2015 version). Results Of the 46 patients with SLE, four (8.7%) also met the TAFRO syndrome criteria (TAFRO-like group). All patients in the TAFRO-like group were males, and their mean age was significantly higher than that of the non-TAFRO group (67.5 ± 8.7 vs. 39.3 ± 18.1 years, p = 0.004). C-reactive protein and γ-glutamyl transpeptidase levels were significantly higher, and frequencies of anti-dsDNA and anti-Sm antibodies were significantly lower in the TAFRO-like than non-TAFRO group. Elder cases (onset age ≥ 50 years) met significantly more categories of the diagnostic criteria for TAFRO syndrome than did those with younger cases. Conclusions Several patients with SLE, especially elder cases, showed features similar to those of TAFRO syndrome. Although exclusion of SLE is needed in the diagnostic criteria for TAFRO syndrome, TAFRO syndrome-like SLE should be considered.
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Tanaka Y, Takahashi H, Utoh H, Shinde J, Ogawa M, Iwazaki K, Aoyama H, Umetsu H, Okamoto A, Shinto K, Kitajima S, Yokoyama M, Inagaki S, Suzuki Y, Nishimura K, Sasaoa M. Potential and Density Fluctuation Characteristics of the Hot-Cathode-Biased Supersonic Plasma in TU-Heliac. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst07-a1370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Suzuki Y, Ochiumi Y, Kano S, Murase S, Murata A, Ito T. P6085Prevalence and clinical impact of tissue protrusion after stent implantation for acute coronary syndrome. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kuronuma K, Suzuki Y, Sugai S, Hayashida S, Atsumi W, Kawamorita T, Sudo M, Yagi T, Komoriya M, Yokoyama K, Tachibana E, Kunimoto S, Matsumoto N, Hirayama A. P4323A prospective assessment of left atrial appendage thrombus with 320 detector row computed tomography in comparison with transesophageal echocardiography. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sato H, Kondo N, Nakatsue T, Wada Y, Fujisawa J, Kazama JJ, Kuroda T, Suzuki Y, Nakano M, Endo N, Narita I. High and pointed type of femoral localized reaction frequently extends to complete and incomplete atypical femoral fracture in patients with autoimmune diseases on long-term glucocorticoids and bisphosphonates. Osteoporos Int 2017; 28:2367-2376. [PMID: 28409215 DOI: 10.1007/s00198-017-4038-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 04/03/2017] [Indexed: 01/22/2023]
Abstract
UNLABELLED Once a localized reaction (beaking) was detected, discontinuation of bisphosphonates (BPs) and switching to vitamin D supplementation or teriparatide therapy effectively improved its shape. When the localized reaction was high, of the pointed type, and/or accompanied by prodromal pain, the risks of complete and incomplete atypical femoral fracture increased and consideration of prophylactic fixation for such patients was required. INTRODUCTION Femoral localized reaction (localized periosteal thickening of the lateral cortex, beaking) is reported to precede atypical femoral fractures (AFFs) and to develop in 8-10% of patients with autoimmune diseases taking BPs and glucocorticoids. The aims of the present study were to retrospectively investigate the shapes of localized reaction to consider how to manage the condition. METHODS Twenty femora of 12 patients with autoimmune diseases who were on BPs and glucocorticoids exhibited femoral localized reaction. The heights of localized reaction were measured and the shapes classified as pointed, arched, and other. Localized reaction changes were divided into three categories: deterioration, no change, and improvement. A severe form of localized reaction was defined; this was associated with prodromal pain, de novo complete AFF, or incomplete AFF with a fracture line at the localized reaction. RESULTS The mean height of localized reaction was 2.3 ± 0.8 mm (range, 1.0-3.7 mm) and the pointed type was 35%. Localized reaction was significantly higher (3.3 ± 0.8 vs. 2.1 ± 0.7 mm; p = 0.003) and the pointed type more common (78 vs. 27%; p = 0.035) in those with the severe form of localized reaction. Seven patients with localized reactions discontinued BPs just after localized reaction was detected, but five continued on BPs for 2 years. Localized reaction deterioration was more common in patients who continued than discontinued BPs (100 vs. 29%; p = 0.027). After 2 years, all patients had discontinued BPs and localized reaction did not deteriorate further in any patient. CONCLUSIONS Once a localized reaction was detected, discontinuation of BPs and switching to vitamin D supplementation or teriparatide therapy effectively improved it. When the localized reaction was high, of the pointed type, and/or accompanied by prodromal pain, the risks of complete and incomplete AFF increased and consideration of prophylactic fixation for such patients was required.
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Kozioł-Rachwał A, Nozaki T, Freindl K, Korecki J, Yuasa S, Suzuki Y. Enhancement of perpendicular magnetic anisotropy and its electric field-induced change through interface engineering in Cr/Fe/MgO. Sci Rep 2017; 7:5993. [PMID: 28729553 PMCID: PMC5519679 DOI: 10.1038/s41598-017-05994-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 06/07/2017] [Indexed: 11/09/2022] Open
Abstract
Recently, perpendicular magnetic anisotropy (PMA) and its voltage control (VC) was demonstrated for Cr/Fe/MgO. In this study, we shed light on the origin of large voltage-induced anisotropy change in Cr/Fe/MgO. Analysis of the chemical structure of Cr/Fe/MgO revealed the existence of Cr atoms in the proximity of the Fe/MgO interface, which can affect both magnetic anisotropy (MA) and its VC. We showed that PMA and its VC can be enhanced by controlled Cr doping at the Fe/MgO interface. For Cr/Fe (5.9 Å)/Cr (0.7 Å)/MgO with an effective PMA of 0.8 MJ/m3, a maximum value of the voltage-controlled magnetic anisotropy (VCMA) effect of 370 fJ/Vm was demonstrated due to Cr insertion.
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