51
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He Y, Hashimoto M, Song D, Chen SD, He J, Vishik IM, Moritz B, Lee DH, Nagaosa N, Zaanen J, Devereaux TP, Yoshida Y, Eisaki H, Lu DH, Shen ZX. Rapid change of superconductivity and electron-phonon coupling through critical doping in Bi-2212. Science 2018; 362:62-65. [DOI: 10.1126/science.aar3394] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 07/30/2018] [Indexed: 11/02/2022]
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52
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Kishikawa H, Kinoshita T, Hashimoto M, Fukae S, Taniguchi A, Yamanaka K, Nakagawa M, Nishimura K. Class II HLA Eplet Mismatch Is a Risk Factor for De Novo Donor-Specific Antibody Development and Antibody-mediated Rejection in Kidney Transplantation Recipients. Transplant Proc 2018; 50:2388-2391. [DOI: 10.1016/j.transproceed.2018.02.183] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 02/19/2018] [Indexed: 10/17/2022]
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53
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Hashimoto M, Friess M, Lauk O, Weder W, Opitz I. P2.06-13 Poor Nutritional Status Is a Poor Prognostic Factor in Malignant Pleural Mesothelioma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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54
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Hasegawa S, Kodama H, Hashimoto M, Fukuda A, Nakamichi T, Nakamura A, Kuroda A, Takuwa T, Matsumoto S, Okumura Y, Yamakado K, Kijima T, Kondo N. ES03.05 Role of Surgery in T0 Mesothelioma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.030] [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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55
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Matsuo T, Hashimoto M, Ito I, Kubo T, Uozumi R, Furu M, Ito H, Fujii T, Tanaka M, Terao C, Kono H, Mori M, Hamaguchi M, Yamamoto W, Ohmura K, Morita S, Mimori T. Interleukin-18 is associated with the presence of interstitial lung disease in rheumatoid arthritis: a cross-sectional study. Scand J Rheumatol 2018; 48:87-94. [PMID: 30269670 DOI: 10.1080/03009742.2018.1477989] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Serum interleukin-18 (IL-18) levels are increased in patients with interstitial lung disease (ILD). In addition, IL-18 levels are increased in patients with rheumatoid arthritis (RA) and are associated with arthritis activity. We determined whether increased IL-18 levels are associated with ILD in RA. METHOD RA patients were enrolled using an RA cohort database. Plasma IL-18 levels were measured by enzyme-linked immunosorbent assay. ILD was determined by a pulmonologist and a radiologist based on chest radiography and computed tomography findings. IL-18 levels for RA with ILD and RA without ILD were compared. Associations between ILD and various markers including IL-18 and confounding factors (e.g. smoking history) were investigated by logistic regression analysis. Diagnostic values of IL-18 for the presence of ILD were investigated using receiver operating characteristics curve analysis. RESULTS ILD was complicated in 8.2% (n = 26) of the study population (N = 312). Plasma IL-18 levels were higher for RA patients with ILD than for RA patients without ILD (721.0 ± 481.4 vs 436.8 ± 438.9 pg/mL, p < 0.001). IL-18, Krebs von den Lungen-6, and anti-cyclic citrullinated peptide antibody titre and glucocorticoid doses were independently associated with the presence of ILD during multivariate logistic regression analysis. Sensitivity and specificity of IL-18 levels for the detection of ILD in RA patients were 65.3% and 76.3%, respectively (area under the curve = 0.73). CONCLUSION Plasma IL-18 levels were higher for RA patients with ILD than for those without ILD. Increased IL-18 levels were associated with the presence of ILD.
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Maekawa T, Osawa Y, Izumi T, Nagao S, Takano K, Okada Y, Tachi N, Teramoto M, Kawamura T, Horiuchi T, Saga R, Kato S, Yamamura T, Watanabe J, Kobayashi A, Kobayashi S, Sato K, Hashimoto M, Suzu S, Kimura F. Correction: Myeloproliferative leukemia protein activation directly induces fibrocyte differentiation to cause myelofibrosis. Leukemia 2018; 32:2729-2730. [PMID: 30232464 DOI: 10.1038/s41375-018-0237-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Owing to the insufficient specificity of the anti-myeloproliferative leukemia protein (MPL) antibody in the original version of this Article, Figure 6 and parts of Figures 2a, 4e, and 5a do not represent the correct information. The corrected version of Figure 6 is in this correction and those of Figures 2a, 4e, and 5a are shown in the supplemental information.
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57
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Yi M, Frano A, Lu DH, He Y, Wang M, Frandsen BA, Kemper AF, Yu R, Si Q, Wang L, He M, Hardy F, Schweiss P, Adelmann P, Wolf T, Hashimoto M, Mo SK, Hussain Z, Le Tacon M, Böhmer AE, Lee DH, Shen ZX, Meingast C, Birgeneau RJ. Spectral Evidence for Emergent Order in Ba_{1-x}Na_{x}Fe_{2}As_{2}. PHYSICAL REVIEW LETTERS 2018; 121:127001. [PMID: 30296157 DOI: 10.1103/physrevlett.121.127001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Revised: 07/05/2018] [Indexed: 06/08/2023]
Abstract
We report an angle-resolved photoemission spectroscopy study of the iron-based superconductor family, Ba_{1-x}Na_{x}Fe_{2}As_{2}. This system harbors the recently discovered double-Q magnetic order appearing in a reentrant C_{4} phase deep within the underdoped regime of the phase diagram that is otherwise dominated by the coupled nematic phase and collinear antiferromagnetic order. From a detailed temperature-dependence study, we identify the electronic response to the nematic phase in an orbital-dependent band shift that strictly follows the rotational symmetry of the lattice and disappears when the system restores C_{4} symmetry in the low temperature phase. In addition, we report the observation of a distinct electronic reconstruction that cannot be explained by the known electronic orders in the system.
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58
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Matsumoto K, Oohana K, Hashimoto M, Usuda K, Shimoda T, Ohshima H, Suzuki Y, Togawa T. Enzyme-mediated enantioselective hydrolysis of 1,2-diol monotosylate derivatives bearing an unsaturated substituent. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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59
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Itoh Y, Sasaki JI, Hashimoto M, Katata C, Hayashi M, Imazato S. Pulp Regeneration by 3-dimensional Dental Pulp Stem Cell Constructs. J Dent Res 2018; 97:1137-1143. [PMID: 29702010 DOI: 10.1177/0022034518772260] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dental pulp regeneration therapy for the pulpless tooth has attracted recent attention, and clinical trial studies are underway with the tissue engineering approach. However, there remain many concerns, including the extended period for regenerating the dental pulp. In addition, the use of scaffolds increases the risk of inflammation and infection. To establish a basic technology for novel dental pulp regenerative therapy that allows transplant of pulp-like tissue, we attempted to fabricate scaffold-free 3-dimensional (3D) cell constructs composed of dental pulp stem cells (DPSCs). Furthermore, we assessed viability of these 3D DPSC constructs for dental pulp regeneration through in vitro and in vivo studies. For the in vitro study, we obtained 3D DPSC constructs by shaping sheet-like aggregates of DPSCs with a thermoresponsive hydrogel. DPSCs within constructs remained viable even after prolonged culture; furthermore, 3D DPSC constructs possessed a self-organization ability necessary to serve as a transplant tissue. For the in vivo study, we filled the human tooth root canal with DPSC constructs and implanted it subcutaneously into immunodeficient mice. We found that pulp-like tissues with rich blood vessels were formed within the human root canal 6 wk after implantation. Histologic analyses revealed that transplanted DPSCs differentiated into odontoblast-like mineralizing cells at sites in contact with dentin; furthermore, human CD31-positive endothelial cells were found at the center of regenerated tissue. Thus, the self-organizing ability of 3D DPSC constructs was active within the pulpless root canal in vivo. In addition, blood vessel-rich pulp-like tissues can be formed with DPSCs without requiring scaffolds or growth factors. The technology established in this study allows us to prepare DPSC constructs with variable sizes and shapes; therefore, transplantation of DPSC constructs shows promise for regeneration of pulpal tissue in the pulpless tooth.
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60
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Aoyama H, Ebata T, Hattori M, Takano M, Yamamoto H, Inoue M, Asaba Y, Ando M, Nagino M, Aoba T, Kaneoka Y, Arai T, Shimizu Y, Kiriyama M, Sakamoto E, Miyake H, Takara D, Shirai K, Ohira S, Kobayashi S, Kato Y, Yamaguchi R, Hayashi E, Miyake T, Mizuno S, Sato T, Suzuki K, Hashimoto M, Kawai S, Matsubara H, Kato K, Yokoyama S, Suzumura K. Reappraisal of classification of distal cholangiocarcinoma based on tumour depth. Br J Surg 2018; 105:867-875. [DOI: 10.1002/bjs.10869] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 02/22/2018] [Accepted: 03/02/2018] [Indexed: 02/02/2023]
Abstract
Abstract
Background
In the eighth edition of the AJCC cancer staging classification, the T system for distal cholangiocarcinoma (DCC) has been revised from a layer-based to a depth-based approach. The aim of this study was to propose an optimal T classification using a measured depth in resectable DCC.
Methods
Patients who underwent pancreatoduodenectomy for DCC at 32 hospitals between 2001 and 2010 were included. The distance between the level of the naive bile duct and the deepest cancer cells was measured as depth of invasion (DOI). Invasive cancer foci were measured as invasive tumour thickness (ITT). Log rank χ2 scores were used to determine the cut-off points, and concordance index (C-index) to assess the survival discrimination of each T system.
Results
Among 404 patients, DOI was measurable in 182 (45·0 per cent) and ITT was measurable in all patients, with median values of 2·3 and 5·6 mm respectively. ITT showed a positive correlation with DOI (rs = 0·854, P < 0·001), and the cut-off points for prognosis were 1, 5 and 10 mm. Median survival time was shorter with increased ITT: 12·4 years for ITT below 1 mm, 5·2 years for ITT at least 1 mm but less than 5 mm, 3·0 years for ITT at least 5 mm but less than 10 mm, and 1·5 years for ITT 10 mm or more (P < 0·001). This classification exhibited more favourable prognostic discrimination than the T systems of the seventh and eighth editions of the AJCC (C-index 0·646, 0·622 and 0·624 respectively).
Conclusion
ITT is an accurate approach for depth assessment in DCC. The four-tier ITT classification with cut-off points of 1, 5 and 10 mm seems to be a better T system than those in the seventh and eighth editions of the AJCC classification.
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61
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Hirose K, Aoki T, Furukawa T, Fukushima S, Niioka H, Deguchi S, Hashimoto M. Coherent anti-Stokes Raman scattering rigid endoscope toward robot-assisted surgery. BIOMEDICAL OPTICS EXPRESS 2018; 9:387-396. [PMID: 29552380 PMCID: PMC5854045 DOI: 10.1364/boe.9.000387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 12/16/2017] [Accepted: 12/18/2017] [Indexed: 05/16/2023]
Abstract
Label-free visualization of nerves and nervous plexuses will improve the preservation of neurological functions in nerve-sparing robot-assisted surgery. We have developed a coherent anti-Stokes Raman scattering (CARS) rigid endoscope to distinguish nerves from other tissues during surgery. The developed endoscope, which has a tube with a diameter of 12 mm and a length of 270 mm, achieved 0.91% image distortion and 8.6% non-uniformity of CARS intensity in the whole field of view (650 μm diameter). We demonstrated CARS imaging of a rat sciatic nerve and visualization of the fine structure of nerve fibers.
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62
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Ohshio Y, Hayashi K, Okamoto K, Kaku R, Kataoka Y, Kawaguchi Y, Ohshio M, Igarashi T, Hashimoto M, Teramoto K, Hanaoka J. P1.02-030 The Effect of Chronic Obstructive Pulmonary Disease on the Tumor Stroma in Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.763] [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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63
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Kuroda A, Kondo N, Fukuda A, Nakamichi T, Nakamura A, Hashimoto M, Takuwa T, Matsumoto S, Tsujimura T, Takashi K, Hasegawa S. P3.09-009 Fourteen Cases Study of 5 Year Survivors of Malignant Pleural Mesothelioma Following Extrapleural Pneumonectomy. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1719] [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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64
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Igarashi T, Hayashi K, Okamoto K, Kaku R, Kataoka Y, Kawaguchi Y, Hashimoto M, Ohshio Y, Teramoto K, Hanaoka J. P3.16-048 The Role of Pulmonary Resection in Stage IVa Non-Small Cell Carcinoma Patients. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1855] [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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65
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Hashimoto M, Nakamichi T, Fukuda A, Kuroda A, Takuwa T, Matsumoto S, Kondo N, Tsujimura T, Hasegawa S. P2.09-007 Pleural Biopsy in Patients Suspected of Malignant Pleural Mesothelioma Consecutive 377 Cases. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1332] [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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66
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Teramoto K, Namura Y, Hayashi K, Ishida K, Ueda K, Okamoto K, Kaku R, Hori T, Kawaguchi Y, Igarashi T, Hashimoto M, Ohshio Y, Kitamura S, Motoishi M, Suzumura Y, Sawai S, Hanaoka J, Daigo Y. P1.03-037 A Phase II Study of Adjuvant Chemotherapy with Docetaxel plus Nedaplatin for Completely Resected Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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67
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Nagashima T, Ito H, Nito M, Wada A, Hashimoto M, Osawa J, Samejima J, Nakayama H. P-250BRONCHIAL STUMP COVERAGE WITH FREE PERICARDIAL FAT PAD UNDER THORACOSCOPIC SURGERY: EVALUATION OF RESIDUAL VOLUME SIX MONTHS AFTER SURGERY. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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68
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Kuroda A, Kondo N, Fukuda A, Nakamichi T, Hashimoto M, Takuwa T, Matsumoto S, Hasegawa S. P-268VALIDATION OF THE 8TH VERSION OF THE INTERNATIONAL MESOTHELIOMA INTEREST GROUP (IMIG) STAGING SYSTEM FOR MALIGNANT PLEURAL MESOTHELIOMA. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.268] [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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69
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Hashimoto M, Yamashita K, Matsuzaki K, Kato S, Shido O. BENEFICIAL EFFECTS OF PERILLA OIL AND BRAIN TRAINING INTERVENTION ON COGNITION IN ELDERLY JAPANESE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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70
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Geft D, Kittleson M, Patel J, Aintablian T, Levine R, Hashimoto M, Kransdorf E, Chang D, Czer L, Ramzy D, Kobashigawa J. The Story on Extracorporeal Membrane Oxygenation (ECMO) Directly to Mechanical Circulatory Support or to Heart Transplantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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71
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Rebec SN, Jia T, Zhang C, Hashimoto M, Lu DH, Moore RG, Shen ZX. Coexistence of Replica Bands and Superconductivity in FeSe Monolayer Films. PHYSICAL REVIEW LETTERS 2017; 118:067002. [PMID: 28234508 DOI: 10.1103/physrevlett.118.067002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Indexed: 06/06/2023]
Abstract
To elucidate the mechanisms behind the enhanced T_{c} in monolayer (1 ML) FeSe on SrTiO_{3} (STO), we grew highly strained 1 ML FeSe on the rectangular (100) face of rutile TiO_{2}, and observed the coexistence of replica bands and superconductivity with a T_{c} of 63 K. From the similar T_{c} between this system and 1ML FeSe on STO (001), we conclude that strain and dielectric constant are likely unimportant to the enhanced T_{c} in these systems. A systematic comparison of 1 ML FeSe on TiO_{2} with other systems in the FeSe family shows that while charge transfer alone can enhance T_{c}, it is only with the addition of interfacial electron-phonon coupling that T_{c} can be increased to the level seen in 1 ML FeSe on STO.
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72
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He J, Zhang C, Ghimire NJ, Liang T, Jia C, Jiang J, Tang S, Chen S, He Y, Mo SK, Hwang CC, Hashimoto M, Lu DH, Moritz B, Devereaux TP, Chen YL, Mitchell JF, Shen ZX. Distinct Electronic Structure for the Extreme Magnetoresistance in YSb. PHYSICAL REVIEW LETTERS 2016; 117:267201. [PMID: 28059532 DOI: 10.1103/physrevlett.117.267201] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 06/06/2023]
Abstract
An extreme magnetoresistance (XMR) has recently been observed in several nonmagnetic semimetals. Increasing experimental and theoretical evidence indicates that the XMR can be driven by either topological protection or electron-hole compensation. Here, by investigating the electronic structure of a XMR material, YSb, we present spectroscopic evidence for a special case which lacks topological protection and perfect electron-hole compensation. Further investigations reveal that a cooperative action of a substantial difference between electron and hole mobility and a moderate carrier compensation might contribute to the XMR in YSb.
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73
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Asai Y, Ohyama Y, Taiji Y, Makimura Y, Tamai R, Hashimoto M, Ogawa T. Treponema medium Glycoconjugate Inhibits Activation of Human Gingival Fibroblasts Stimulated with Phenol-Water Extracts of Periodontopathic Bacteria. J Dent Res 2016; 84:456-61. [PMID: 15840783 DOI: 10.1177/154405910508400511] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Oral treponemes are well-known as causative agents of periodontal diseases; however, the details have not been fully clarified. Here, we examined the effects of Treponema medium glycoconjugate on the activation of human gingival fibroblasts using phenol-water extracts from Porphyromonas gingivalis, Prevotella intermedia, Fusobacterium nucleatum subsp. nucleatum, and Actinobacillus actinomycetemcomitans. The phenol-water extracts activated human gingival fibroblasts to mediate IL-8 production, as well as IL-8 mRNA expression, phosphorylation of p38 mitogen-activated protein kinase, and expression of intercellular adhesion molecule-1. T. medium glycoconjugate exhibited no activation of human gingival fibroblasts, while phenol-water extract-induced activation of human gingival fibroblasts was clearly inhibited by T. medium glycoconjugate. Furthermore, binding of biotinylated phenol-water extracts to CD14 in the presence of LPS-binding protein was blocked with T. medium glycoconjugate. These results suggest that T. medium glycoconjugate has an inhibitory effect on host cell activation by periodontopathic bacteria caused by binding to CD14- and LPS-binding protein.
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74
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Hashimoto M, de Gee AJ, Kaga M, Feilzer AJ. Contraction Stress in Dentin Adhesives Bonded to Dentin. J Dent Res 2016; 85:728-32. [PMID: 16861290 DOI: 10.1177/154405910608500808] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Adhesives cured under constrained conditions develop contraction stresses. We hypothesized that, with dentin as a bonding substrate, the stress would reach a maximum, followed by a continuous decline. Stress development was determined with a tensilometer for two total-etch systems and two systems with self-etching primers. The adhesives were placed in a thin layer between a glass plate and a flat dentin surface pretreated with phosphoric acid or self-etching primer. After an initial maximum shortly after light-curing, the stress decreased dramatically for the total-etch systems (70%) and, to a lesser extent, for the adhesives with self-etching primers (30%). The greater stress decrease for the total-etch systems was ascribed to water and/or solvents released into the adhesives from the fully opened dentinal tubules by the pulling/sucking action of the contraction stress. This happened less with the adhesives with self-etching primers, where the tubules remained mainly closed.
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75
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Kudo S, Fukushima K, Hashimoto M, Furutake M, Tanaka K, Okada K. Airway and circulatory collapse due to retropharyngeal hematoma after blunt vertebral artery injury. Am J Emerg Med 2016; 35:806.e5-806.e7. [PMID: 27988252 DOI: 10.1016/j.ajem.2016.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 12/07/2016] [Indexed: 11/16/2022] Open
Abstract
Retropharyngeal hematoma following blunt cervical spine injury is a known cause of airway obstruction, but it is not known to cause hemorrhagic shock. We report the case of a massive retropharyngeal hematoma caused by a blunt vertebral artery transection leading simultaneously to airway obstruction and hemorrhagic shock. An 83-year-old woman was injured in a motorcycle accident. In the field, the patient exhibited paradoxical breathing with no breath sounds, and her blood pressure could not be measured. Therefore, emergency intubation and fluid resuscitation were initiated and the patient was transferred to the emergency department. Computed tomography angiography revealed a massive retropharyngeal hematoma with contrast extravasation from the right vertebral artery, which caused airway obstruction and hemorrhagic shock. The right vertebral artery was transected at the C5 level, which was associated with C4/C5 dislocation. Vertebral artery transection was successfully treated by endovascular embolization, which was followed by complication of asymptomatic posterior circulation stroke. Blunt vertebral artery transection can cause massive retropharyngeal hematoma, which can rapidly expand and lead to hemorrhagic shock in addition to airway obstruction. In cases of massive retropharyngeal hematoma with hemorrhagic shock following blunt cervical spine injury, blunt vertebral artery transection should be suspected. If blunt vertebral artery transection is detected and hemorrhagic shock is persistent, endovascular embolization should be performed immediately in addition to emergency intubation.
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