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Yamashita Y, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M. Prophylactic Anticoagulation and Thrombosis in Hospitalized Patients with Clinically Stable COVID-19 at Admission: From the Practice-Based Observational Study. Ann Vasc Dis 2024; 17:1-8. [PMID: 38628927 PMCID: PMC11018098 DOI: 10.3400/avd.oa.23-00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/29/2023] [Indexed: 04/19/2024] Open
Abstract
Objectives: The potential benefit of routine prophylactic anticoagulation for all hospitalized patients with clinically stable coronavirus disease 2019 (COVID-19) is still controversial. Method: The CLOT-COVID Study was a multicenter observational study enrolling 2894 consecutive hospitalized patients with COVID-19. The current study population consisted of 1738 hospitalized patients with mild COVID-19 at admission not requiring oxygen administration, who were divided into 2 groups: patients with prophylactic anticoagulation (n = 326) and those without (n = 1412). Results: Patients with prophylactic anticoagulation had more severe status of the worst severity of COVID-19 during hospitalization compared with those without (mild: 38% versus 82%, moderate: 55% versus 17%, and severe or death at discharge: 6.4% versus 0.7%, P <0.001). During hospitalization, 8 patients (0.5%) developed thrombosis, and the incidences of thrombosis were numerically higher in patients with more severe status of worst severity of COVID-19 during hospitalization (mild: 0.2%, moderate: 1.2%, and severe or death at discharge: 3.2%). Conclusions: Among hospitalized patients with clinically stable COVID-19 at admission, patients who did not worsen in COVID-19 severity after admission rarely developed thrombosis, although patients with worsening of COVID-19 severity after admission more often received prophylactic anticoagulation and might have a higher risk of thrombosis.
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Affiliation(s)
- Yugo Yamashita
- Department of Cardiovascular Medicine, Kyoto University Hospital, Kyoto, Kyoto, Japan
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Yuji Nishimoto
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo, Japan
| | | | | | | | - Hiroko Nakata
- Yokosuka General Hospital Uwamachi, Yokosuka, Kanagawa, Japan
| | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
| | | | - Shizu Aikawa
- Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
| | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine, Suita, Osaka, Japan
| | - Hirono Satokawa
- Fukushima Medical University, School of Medicine, Fukushima, Fukushima, Japan
| | - Yoshinori Okuno
- Department of Cardiovascular Medicine, Kyoto University Hospital, Kyoto, Kyoto, Japan
| | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Oita, Japan
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults, Zentsuji, Kagawa, Japan
| | | | | | | | | | - Makoto Mo
- Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
| | - on behalf of the Clot-COVID Study Investigators
- Department of Cardiovascular Medicine, Kyoto University Hospital, Kyoto, Kyoto, Japan
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo, Japan
- Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Hamamatsu Medical Center, Hamamatsu, Shizuoka, Japan
- Yokosuka General Hospital Uwamachi, Yokosuka, Kanagawa, Japan
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Nagasaki, Japan
- Tohoku University Hospital, Sendai, Miyagi, Japan
- Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
- Osaka Metropolitan University Graduate School of Medicine, Suita, Osaka, Japan
- Fukushima Medical University, School of Medicine, Fukushima, Fukushima, Japan
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Oita, Japan
- Mie University Hospital, Tsu, Mie, Japan
- Toho University Ohashi Medical Center, Tokyo, Japan
- Shikoku Medical Center for Children and Adults, Zentsuji, Kagawa, Japan
- Tsukuba Vascular Center, Moriya, Ibaraki, Japan
- Kuwana City Medical Center, Kuwana, Mie, Japan
- Fukushima Daiich Hospital, Fukushima, Fukushima, Japan
- Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
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Umetsu M, Kanamori H, Murakami K, Shiga T, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Clinical Features Comparing Arterial Thrombosis and Venous Thromboembolism in Hospitalized Patients with COVID-19: Result from the CLOT-COVID Study. Ann Vasc Dis 2023; 16:115-123. [PMID: 37359099 PMCID: PMC10288120 DOI: 10.3400/avd.oa.22-00112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/24/2023] [Indexed: 06/28/2023] Open
Abstract
Objectives: This study aimed to investigate the clinical features of arterial thrombosis and venous thromboembolism (VTE) in coronavirus disease 2019 (COVID-19). Methods: The CLOT-COVID Study was a retrospective, multicenter cohort study that enrolled 2,894 consecutively hospitalized patients with COVID-19 among 16 centers in Japan from April 2021 to September 2021. We compared the clinical features of arterial thrombosis and VTE. Results: Thrombosis was observed in 55 patients (1.9%) during hospitalization. Arterial thrombosis and VTE occurred in 12 (0.4%) and 36 (1.2%) patients, respectively. Among the 12 patients with arterial thrombosis, 9 (75%), 2 (17%), and 1 developed ischemic cerebral infarction, myocardial infarction, and acute limb ischemia, respectively, and there were five patients (42%) without comorbidities. Among 36 patients with VTE, 19 (53%) and 17 (47%) developed pulmonary embolism (PE) and deep vein thrombosis (DVT), respectively. PE was common in the early stages of hospitalization; whereas, DVT was common beyond the early stages of hospitalization. Conclusion: Among patients with COVID-19, arterial thrombosis was less common than VTE, although ischemic cerebral infarction seemed to be relatively common, and a certain number of patients developed arterial thrombosis even in the absence of known atherosclerosis risk factors.
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Affiliation(s)
| | | | | | - Takuya Shiga
- Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Yuji Nishimoto
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo, Japan
| | | | | | | | - Hiroko Nakata
- Yokosuka General Hospital Uwamachi, Yokosuka, Kanagawa, Japan
| | - Satoshi Ikeda
- Nagasaki University Hospital, Nagasaki, Nagasaki, Japan
| | - Shizu Aikawa
- Tsukuba Medical Center Hospital, Tsukuba, Ibaraki, Japan
| | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine, Osaka, Osaka, Japan
| | - Hirono Satokawa
- Fukushima Medical University, School of Medicine, Fukushima, Fukushima, Japan
| | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Osaka, Japan
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults, Zentsuji, Kagawa, Japan
| | | | | | | | | | - Makoto Mo
- Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan
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Takeyama M, Yachi S, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Mortality-associated Risk Factors in Hospitalized COVID-19 Patients in Japan: Findings of the CLOT-COVID Study. J Epidemiol 2023; 33:150-157. [PMID: 36372435 PMCID: PMC9909175 DOI: 10.2188/jea.je20220201] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Reports of mortality-associated risk factors in patients with the novel coronavirus disease 2019 (COVID-19) are limited. METHODS We evaluated the clinical features that were associated with mortality among patients who died during hospitalization (n = 158) and those who were alive at discharge (n = 2,736) from the large-scale, multicenter, retrospective, observational cohort CLOT-COVID study, which enrolled consecutively hospitalized COVID-19 patients from 16 centers in Japan from April to September 2021. Data from 2,894 hospitalized COVID-19 participants of the CLOT-COVID study were analyzed in this study. RESULTS Patients who died were older (71.1 years vs 51.6 years, P < 0.001), had higher median D-dimer values on admission (1.7 µg/mL vs 0.8 µg/mL, P < 0.001), and had more comorbidities. On admission, the patients who died had more severe COVID-19 than did those who survived (mild: 16% vs 63%, moderate: 47% vs 31%, and severe: 37% vs 6.2%, P < 0.001). In patients who died, the incidence of thrombosis and major bleeding during hospitalization was significantly higher than that in those who survived (thrombosis: 8.2% vs 1.5%, P < 0.001; major bleeding: 12.7% vs 1.4%, P < 0.001). Multivariable logistic regression analysis revealed that age >70 years, high D-dimer values on admission, heart disease, active cancer, higher COVID-19 severity on admission, and development of major bleeding during hospitalization were independently associated with a higher mortality risk. CONCLUSION This large-scale observational study in Japan identified several independent risk factors for mortality in hospitalized patients with COVID-19 that could facilitate appropriate risk stratification of patients with COVID-19.
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Affiliation(s)
- Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences
| | | | | | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine
| | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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4
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Ikeda S, Ueno Y, Maemura K, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Association Between the Development of Thrombosis and Worsening of Disease Severity in Patients With Moderate COVID-19 on Admission - From the CLOT-COVID Study. Circ J 2023; 87:448-455. [PMID: 35786694 DOI: 10.1253/circj.cj-22-0252] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The worsening of coronavirus disease 2019 (COVID-19) severity is a critical issue in current clinical settings and may be associated with the development of thrombosis.Methods and Results: This study used patient data obtained in the CLOT-COVID study, a retrospective multicenter cohort study. The demographics of patients with moderate COVID-19 on admission with and without worsened severity during hospitalization were compared and predictors were identified. Of 927 patients with moderate COVID-19 on admission, 182 (19.6%) had worsened severity during hospitalization. Patients with worsening of severity were older, more likely to have hypertension, diabetes, heart disease, and active cancer, and more likely to use pharmacological thromboprophylaxis. Patients with worsening of severity had higher D-dimer levels on admission and were more likely to develop thrombosis and major bleeding during hospitalization than those without worsening. Increased age (odds ratio [OR]: 1.02, 95% confidence interval [CI]: 1.01-1.03, P=0.005), diabetes (OR: 1.63, 95% CI: 1.11-2.33, P=0.012), D-dimer levels >1.0 μg/mL on admission (OR: 2.10, 95% CI: 1.45-3.03, P<0.001), and thrombosis (OR: 6.28, 95% CI: 2.72-14.53, P<0.001) were independently associated with worsening of COVID-19 severity. CONCLUSIONS Approximately 20% of patients with moderate COVID-19 had worsened severity during hospitalization. Increased age, diabetes, D-dimer levels >1.0 μg/mL on admission, and the development of thrombosis during hospitalization were significantly associated with worsened COVID-19 severity.
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Affiliation(s)
- Satoshi Ikeda
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Yuki Ueno
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Koji Maemura
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | | | | | | | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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5
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Kotaka S, Adachi S, Fujinaka R, Honda S, Nakata H, Seino Y, Sueno Y, Sumida T, Suzuki J, Tajima O, Takeichi S. Search for Dark Photon Dark Matter in the Mass Range 74-110 μeV with a Cryogenic Millimeter-Wave Receiver. Phys Rev Lett 2023; 130:071805. [PMID: 36867799 DOI: 10.1103/physrevlett.130.071805] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
We search for the dark photon dark matter (DPDM) using a cryogenic millimeter-wave receiver. DPDM has a kinetic coupling with electromagnetic fields with a coupling constant of χ and is converted into ordinary photons at the surface of a metal plate. We search for signal of this conversion in the frequency range 18-26.5 GHz, which corresponds to the mass range 74-110 μeV/c^{2}. We observed no significant signal excess, allowing us to set an upper bound of χ<(0.3-2.0)×10^{-10} at 95% confidence level. This is the most stringent constraint to date and tighter than cosmological constraints. Improvements from previous studies are obtained by employing a cryogenic optical path and a fast spectrometer.
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Affiliation(s)
- S Kotaka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - S Adachi
- Hakubi Center for Advanced Research, Kyoto University, Kyoto 606-8501, Japan
| | - R Fujinaka
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - S Honda
- Division of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, Ibaraki, 305-8571, Japan
| | - H Nakata
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Y Seino
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Y Sueno
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - T Sumida
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - J Suzuki
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - O Tajima
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
| | - S Takeichi
- Department of Physics, Faculty of Science, Kyoto University, Kyoto 606-8502, Japan
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6
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Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Risk Factors and Impact on Outcomes of Thrombosis in Patients with COVID-19 in Japan: From the CLOT-COVID Study. Ann Vasc Dis 2023; 16:31-37. [PMID: 37006864 PMCID: PMC10064299 DOI: 10.3400/avd.oa.22-00071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 11/06/2022] [Indexed: 01/15/2023] Open
Abstract
Objectives: The relationship between the thrombotic event and prognosis in patients with coronavirus disease 2019 (COVID-19) has not yet been fully investigated in Japan. Our study aimed to investigate the clinical outcomes and risk factors for thrombosis in hospitalized patients with COVID-19 in Japan. Materials and Methods: We compared the patient characteristics and clinical outcomes among patients with thrombosis (N=55) and those without thrombosis (N=2839) by using a large-scale data of CLOT-COVID study (thrombosis and antiCoaguLatiOn Therapy in patients with COVID-19 in Japan Study: UMIN000045800). Thrombosis included venous thromboembolism, ischemic stroke, myocardial infarction, and systemic arterial thromboembolism. Results: Higher rates of mortality and bleeding events were shown in hospitalized patients with COVID-19 with thrombosis compared to those without thrombosis (all-cause mortality, 23.6% vs. 5.1%, P<0.001; major bleeding, 23.6% vs. 1.6%, P<0.001). Multivariable analysis revealed that the independent risk factors of thrombosis were male sex, D-dimer level on admission>1.0 µg/mL, and moderate and severe COVID-19 status on admission. Conclusions: The development of thrombosis in hospitalized patients with COVID-19 was related to higher mortality and major bleeding, and several independent risk factors for thrombosis could help determine the patient-appropriate treatment for COVID-19.
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Affiliation(s)
- Sen Yachi
- Japan Community Health care Organization Tokyo Shinjuku Medical Center
| | - Makoto Takeyama
- Japan Community Health care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences
| | | | | | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine
| | | | | | - Eriko Iwata
- Japan Community Health care Organization Nankai Medical Center
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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7
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Ogihara Y, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Influence of obesity on incidence of thrombosis and disease severity in patients with COVID-19: From the CLOT-COVID study. J Cardiol 2023; 81:105-110. [PMID: 36096957 PMCID: PMC9420713 DOI: 10.1016/j.jjcc.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 10/25/2022]
Abstract
BACKGROUND The influence of obesity on the development of thrombosis and severity of coronavirus disease 2019 (COVID-19) remains unclear. METHOD The CLOT-COVID study was a retrospective multicenter cohort study enrolling 2894 consecutive hospitalized patients with COVID-19 between April 2021 and September 2021 among 16 centers in Japan. The present study consisted of 2690 patients aged over 18 years with available body mass index (BMI), who were divided into an obesity group (BMI ≥30) (N = 457) and a non-obesity group (BMI <30) (N = 2233). RESULTS The obesity group showed more severe status of COVID-19 at admission compared with the non-obesity group. The incidence of thrombosis was not significantly different between the groups (obesity group: 2.6 % versus non-obesity group: 1.9 %, p = 0.39), while the incidence of a composite outcome of all-cause death, or requirement of mechanical ventilation or extracorporeal membrane oxygenation during hospitalization was significantly higher in the obesity group (20.1 % versus 15.0 %, p < 0.01). After adjusting confounders in the multivariable logistic regression model, the risk of obesity relative to non-obesity for thrombosis was not significant (adjusted OR, 1.39; 95 % CI, 0.68-2.84, p = 0.37), while the adjusted risk of obesity relative to non-obesity for the composite outcome was significant (adjusted OR, 1.85; 95 % CI, 1.39-2.47, p < 0.001). CONCLUSIONS In the present large-scale observational study, obesity was not significantly associated with the development of thrombosis during hospitalization; however, it was associated with severity of COVID-19.
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Affiliation(s)
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Yuji Nishimoto
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | | | | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Japan
| | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults, Zentsuji, Japan
| | | | | | | | | | - Makoto Mo
- Yokohama Minami Kyosai Hospital, Yokohama, Japan
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Akiyoshi K, Arakawa M, Matsumoto H, Adachi K, Nakata H. Successful Crossover Bypass Using a Lateral Femoral Circumflex Artery as an Outflow Vessel for Indirect Revascularization in Critical Limb Ischemia: A Case Report. Ann Vasc Dis 2022; 15:333-336. [PMID: 36644271 PMCID: PMC9816025 DOI: 10.3400/avd.cr.22-00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/22/2022] [Indexed: 12/25/2022] Open
Abstract
A 78-year-old man presented with severe stage 3 (Fontaine IV, Rutherford 5, W1 I3 FI0) right limb ischemia. Although his artery was completely occluded from below the right external iliac to the popliteal artery, collateral circulation from the right lateral femoral circumflex artery was well developed and supplied the lower extremity arteries. We selected an uncommon crossover bypass strategy with the left common femoral artery to the right lateral femoral circumflex artery to improve lower extremity perfusion via indirect revascularization. Bypass using the lateral femoral circumflex artery as an outflow is an option for patients with major lower extremity artery occlusions.
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Affiliation(s)
- Kei Akiyoshi
- Department of Cardiovascular Surgery, Yokosuka Uwamachi Hospital, Yokosuka, Kanagawa, Japan,Corresponding author: Kei Akiyoshi, MD. Department of Cardiovascular Surgery, Yokosuka Uwamachi Hospital, 2-36 Uwamachi, Yokosuka, Kanagawa 238-8567, Japan Tel: +81-46-823-2630, Fax: +81-46-827-1305, E-mail:
| | - Mamoru Arakawa
- Department of Cardiovascular Surgery, Yokosuka Uwamachi Hospital, Yokosuka, Kanagawa, Japan
| | - Harunobu Matsumoto
- Department of Vascular Surgery, Saitama Medical University Hospital, Saitama, Saitama, Japan
| | - Koichi Adachi
- Department of Cardiovascular Surgery, Yokosuka Uwamachi Hospital, Yokosuka, Kanagawa, Japan
| | - Hiroko Nakata
- Department of Cardiovascular Surgery, Yokosuka Uwamachi Hospital, Yokosuka, Kanagawa, Japan
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9
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Hayashi H, Izumiya Y, Fukuda D, Wakita F, Mizobata Y, Fujii H, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. Real-World Management of Pharmacological Thromboprophylactic Strategies for COVID-19 Patients in Japan: From the CLOT-COVID Study. JACC Asia 2022; 2:897-907. [PMID: 36536621 PMCID: PMC9753959 DOI: 10.1016/j.jacasi.2022.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 12/23/2022]
Abstract
Background Data on prophylactic anticoagulation are important in understanding the current issues, unmet needs, and optimal management of Japanese COVID-19 patients. Objectives This study aimed to investigate the clinical management strategies for prophylactic anticoagulation of COVID-19 patients in Japan. Methods The CLOT-COVID study was a multicenter observational study that enrolled 2,894 consecutive hospitalized patients with COVID-19. The study population consisted of 2,889 patients (after excluding 5 patients with missing data); it was divided into 2 groups: patients with pharmacological thromboprophylaxis (n = 1,240) and those without (n = 1,649). Furthermore, we evaluated the 1,233 patients who received prophylactic anticoagulation-excluding 7 patients who could not be classified based on the intensity of their anticoagulants-who were then divided into 2 groups: patients receiving prophylactic anticoagulant doses (n = 889) and therapeutic anticoagulant doses (n = 344). Results The most common pharmacological thromboprophylaxis anticoagulant was unfractionated heparin (68.2%). The severity of COVID-19 at admission was a predictor of the implementation of pharmacological thromboprophylaxis in the multivariable analysis (moderate vs mild: OR: 16.6; 95% CI:13.2-21.0; P < 0.001, severe vs mild: OR: 342.6, 95% CI: 107.7-1090.2; P < 0.001). It was also a predictor of the usage of anticoagulants of therapeutic doses in the multivariable analysis (moderate vs mild: OR: 2.10; 95% CI: 1.46-3.02; P < 0.001, severe vs mild: OR: 5.96; 95% CI: 3.91-9.09; P < 0.001). Conclusions In the current real-world Japanese registry, pharmacological thromboprophylaxis, especially anticoagulants at therapeutic doses, was selectively implemented in COVID-19 patients with comorbidities and severe COVID-19 status at admission.
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Affiliation(s)
- Hiroya Hayashi
- Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan,Address for correspondence: Dr Hiroya Hayashi, Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka 545-8585, Japan
| | - Yasuhiro Izumiya
- Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Fumiaki Wakita
- Department of Traumatology and Critical Care Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Yasumitsu Mizobata
- Department of Traumatology and Critical Care Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Hiromichi Fujii
- Department of Intensive Care Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Yuji Nishimoto
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | | | | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Japan
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults, Zentsuji, Japan
| | | | | | | | | | - Makoto Mo
- Yokohama Minami Kyosai Hospital, Yokohama, Japan
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Yamashita Y, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M. Significant Impact of Age on Mortality and Non-significant Impact of Age on Thrombosis and Major Bleeding in Patients with COVID-19: From the CLOT-COVID Study. J Atheroscler Thromb 2022. [PMID: 35908882 DOI: 10.5551/jat.63702] [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: 01/08/2023] Open
Abstract
AIM There is scarce data on the impact of age on clinical outcomes in patients with coronavirus disease 2019 (COVID-19). METHOD The CLOT-COVID Study was a retrospective, multicenter cohort study enrolling 2894 consecutive hospitalized patients with COVID-19 among 16 centers in Japan from April 2021 to September 2021. We divided the entire cohort into five groups according to age strata; -19, 20-39, 40-59, 60-79, and 80- years. RESULTS Most patients under 19 had mild COVID-19 on admission (99%), while older patients had more severe COVID-19. The incidence rates of clinical outcomes during hospitalization in patients aged ≤ 19, 20-39, 40-59, 60-79, and 80 ≥ years were 0.0%, 0.5%, 2.2%, 2.7%, and 1.5% for thrombosis; 0.0%, 1.2%, 1.5%, 3.4%, and 2.0% for major bleeding; and 0.0%, 0.4%, 2.0%, 12.1%, and 16.8% for all-cause death, respectively. In the stratified analysis according to COVID-19 severity on admission, the incidences of thrombosis were generally higher among patients with more severe status, although those were not significantly different among age strata in all sub-types of COVID-19 severity. However, the incidences of all-cause death were significantly higher with increasing age in all sub-types of COVID-19 severity. CONCLUSIONS In the current large observational study of patients with COVID-19, the risk of mortality became markedly higher with increased age. However, the risks of thrombosis and major bleeding did not necessarily increase as age increases, which seemed to be consistent irrespective of COVID-19 severity on admission.
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Affiliation(s)
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences
| | | | | | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine
| | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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Yamashita Y, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M. Therapeutic-Dose vs. Prophylactic-Dose Anticoagulation Therapy for Critically Ill Patients With COVID-19 in a Practice-Based Observational Study. Circ J 2022; 86:1137-1142. [DOI: 10.1253/circj.cj-22-0209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences
| | | | | | - Hiroya Hayashi
- Osaka Metropolitan University Graduate School of Medicine
| | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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Mizushima I, Saeki T, Kobayashi D, Hayashi H, Taniguchi Y, Nakata H, Matsui S, Nagasawa T, Yanagita M, Kawano M. POS1349 IMMUNOGLOBULIN G4-RELATED KIDNEY DISEASE’S PREDISPOSITION TO CHRONIC RENAL DYSFUNCTION, COMPLICATIONS OF MALIGNANCY, AND MORTALITY: A LONG-TERM NATIONWIDE MULTICENTER STUDY IN JAPAN. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundIn immunoglobulin G4-related kidney disease (IgG4-RKD), persistent renal insufficiency may be observed despite the good initial response to glucocorticoids[1, 2]. However, its long-term prognosis in relation to renal function as well as malignancy and mortality has not been well clarified.ObjectivesTo clarify the long-term renal prognosis, complications of malignancy, mortality, and factors related to those outcomes in IgG4-RKD.MethodsWe retrospectively reviewed the medical records of patients with IgG4-RKD diagnosed by the expert members of the IgG4-RKD working group in the Japanese Society of Nephrology. We investigated clinical, radiological, and histopathological features at baseline and course of renal function, complications of malignancy, and mortality during the long-term observation periods (median 71 months) in 75 patients. Using collected data, we calculated the crude incidence rates (IR) of chronic kidney disease (CKD) status, malignancy, and death. Cox regression analyses were performed to assess CKD-related factors. Additionally, we calculated the standardized incidence ratio (SIR) of malignancy and standardized mortality ratio (SMR) using national Japan statistics.ResultsFifty-nine patients were male, and 16 were female (median age 70 years). At diagnosis, their median eGFR was 45.1 mL/min/1.73m2 (interquartile range [IQR] 28.6-69.9). Seventy-two patients (96%) were treated with prednisolone at a median initial dose of 30 (IQR 30-39) mg/day, leading to a reasonable initial improvement of renal function. The IR of CKD was 30.2/100 person-years, and 66.7% (50/75) of the patients showed CKD at the last visit. Age- and sex-adjusted Cox regression analyses indicated that lower eGFR (per 10 mL/min/1.73m2, hazard ratio [HR] 0.70, 95% confidence interval [CI] 0.61-0.80), pre-existing hypertension (HR 2.39, 95% CI 1.32-4.34), and wider areas with inflammation (>50% vs. <10%, HR 2.55, 95% CI 1.07-6.08) or fibrosis (>50% vs. <5%, HR 2.84, 95% CI 1.18-6.85) in the biopsied renal specimens at treatment initiation had a significant impact on the time to CKD. Eight patients (10.7%) died during follow-up due to malignancy, severe infection, cerebral hemorrhage, or myocardial infarction. The crude mortality rate was 1.76/100 person-years, and a SMR calculated according to national Japan statistics was 0.97 (95% CI 0.42-1.90). On the other hand, 15 patients were diagnosed as having malignancies during follow-up. The IR of malignancy was 3.71/100 person-years, and the SIR of malignancy was 1.80 (95% CI 1.03-2.93).ConclusionThis study suggests that pre-treated renal insufficiency and extensive renal inflammatory and fibrotic lesions are related to CKD under glucocorticoid therapy in IgG4-RKD. Similarly with the whole IgG4-related disease, IgG4-RKD may have an increased incidence of malignancy but a mortality rate equivalent to the age- and sex-matched Japanese population.References[1]Saeki T et al. The clinical course of patients with IgG4-related kidney disease. Kidney Int. 2013 Oct;84(4):826-33.[2]Mizushima I et al. Factors related to renal cortical atrophy development after glucocorticoid therapy in IgG4-related kidney disease: a retrospective multicenter study. Arthritis Res Ther. 2016 Nov 25;18(1):273.Disclosure of InterestsNone declared
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Yamashita Y, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M. Influence of sex on development of thrombosis in patients with COVID-19: From the CLOT-COVID study. Thromb Res 2022; 213:173-178. [PMID: 35390553 PMCID: PMC8970622 DOI: 10.1016/j.thromres.2022.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/15/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023]
Abstract
Introduction There has been limited data on the influence of sex on development of thrombosis in patients with coronavirus disease 2019 (COVID-19). Materials and methods The CLOT-COVID Study was a retrospective, multicenter cohort study enrolling 2894 consecutive hospitalized patients with COVID-19 among 16 centers in Japan from April 2021 to September 2021. We divided the entire cohort into the men (N = 1885) and women (N = 1009) groups. Results There were no significant differences in D-dimer levels at admission between men and women. Men had more severe status of the COVID-19 at admission compared with women (Mild: 57% versus 66%, Moderate: 34% versus 29%, and Severe: 9.1% versus 5.7%, P < 0.001). Men more often received pharmacological thromboprophylaxis than women (47% versus 35%, P < 0.001). During the hospitalization, men more often developed thrombosis than women (2.5% [95%CI, 1.9–3.3%] versus 0.8% [95%CI, 0.4–1.6%], P = 0.001). Men had numerically higher incidences of thrombosis than women in all subgroups of the worst severity of COVID-19 during the hospitalization (Mild: 0.3% versus 0.0%, Moderate: 1.6% versus 1.0%, and Severe: 11.1% versus 4.3%). Even after adjusting confounders in the multivariable logistic regression model, the excess risk of men relative to women remained significant for thrombosis (adjusted OR, 2.51; 95%CI, 1.16–5.43, P = 0.02). Conclusions In the current large observational study of patients with COVID-19, men had more severe status of the COVID-19 than women, and the risk of development of thrombosis was higher in men compared with women, which could be helpful in determining the patient-specific optimal management strategies for COVID-19.
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Affiliation(s)
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Yuji Nishimoto
- Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Japan
| | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | | | | - Hiroya Hayashi
- Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hirono Satokawa
- Fukushima Medical University, School of Medicine, Fukushima, Japan
| | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization, Saiki, Japan
| | | | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults, Zentsuji, Japan
| | | | | | | | | | - Makoto Mo
- Yokohama Minami Kyosai Hospital, Yokohama, Japan
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Nishimoto Y, Yachi S, Takeyama M, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Ikeda N, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. The current status of thrombosis and anticoagulation therapy in patients with COVID-19 in Japan: From the CLOT-COVID study. J Cardiol 2022; 80:285-291. [PMID: 35430141 PMCID: PMC8979768 DOI: 10.1016/j.jjcc.2022.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/15/2022] [Accepted: 03/25/2022] [Indexed: 02/06/2023]
Abstract
Background Data on thrombosis and current real-world management strategies for anticoagulation therapy are scarce but important for understanding current issues and unmet needs of an optimal management of patients with coronavirus disease 2019 (COVID-19). Method The CLOT-COVID Study (thrombosis and antiCoaguLatiOn Therapy in patients with COVID-19 in Japan Study: UMIN000045800) was a retrospective, multicenter cohort study enrolling consecutive hospitalized patients with COVID-19 among 16 centers in Japan from April 2021 to September 2021, and we tried to capture the status of the patients in the fourth and fifth waves of the COVID-19 infections in Japan. We enrolled consecutive hospitalized patients who were diagnosed with COVID-19 and had a positive polymerase chain reaction test obtained from the hospital databases. Results Among 2894 patients with COVID-19, 1245 (43%) received pharmacological thromboprophylaxis. The proportion of pharmacological thromboprophylaxis increased according to the severity of the COVID-19 in 9.8% with mild COVID-19, 61% with moderate COVID-19, and 97% with severe COVID-19. The types and doses of anticoagulants varied widely across the participating centers. During the hospitalization, 38 patients (1.3%) and 126 (4.4%) underwent ultrasound examinations for the lower extremities and contrast-enhanced computed tomography examinations, respectively, and 55 (1.9%) developed thrombosis, mostly venous thromboembolism (71%). The incidence of thrombosis increased according to the severity of the COVID-19 in 0.2% with mild COVID-19, 1.4% with moderate COVID-19, and 9.5% with severe COVID-19. Major bleeding occurred in 57 patients (2.0%) and 158 (5.5%) died, and 81% of them were due to respiratory failure from COVID-19 pneumonia. Conclusions In the present large-scale observational study, pharmacological thromboprophylaxis for hospitalized patients with COVID-19 was common especially in patients with severe COVID-19, and management strategies varied widely across the participating centers. The overall incidence of thrombosis was substantially low with an increased incidence according to the severity of the COVID-19.
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Ikeda N, Yachi S, Takeyama M, Nishimoto Y, Tsujino I, Nakamura J, Yamamoto N, Nakata H, Ikeda S, Umetsu M, Aikawa S, Hayashi H, Satokawa H, Okuno Y, Iwata E, Ogihara Y, Kondo A, Iwai T, Yamada N, Ogawa T, Kobayashi T, Mo M, Yamashita Y. D-Dimer Values and Venous Thromboembolism in Patients With COVID-19 in Japan ― From the CLOT-COVID Study ―. Circ Rep 2022; 4:215-221. [PMID: 35600720 PMCID: PMC9072098 DOI: 10.1253/circrep.cr-22-0022] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 03/15/2022] [Indexed: 01/08/2023] Open
Abstract
Background: To date, there are no large-scale data on the association between D-dimer levels at admission and the occurrence of venous thromboembolism (VTE) in Japanese patients with coronavirus disease 2019 (COVID-19). Methods and Results: The CLOT-COVID study was a retrospective, multicenter cohort study enrolling consecutive hospitalized patients with COVID-19 across 16 centers in Japan from April 2021 to September 2021. Among 2,894 enrolled patients, 2,771 (96%) had D-dimer levels measured at admission. Patients were divided into 3 groups based on tertiles of D-dimer levels at admission (1st tertile, D-dimer ≤0.5 μg/mL, n=949; 2nd tertile, D-dimer 0.51–1.09 μg/mL, n=894; 3rd tertile, D-dimer ≥1.1 μg/mL, n=928). The higher the tertile group, the more severe the COVID-19 status at admission. The incidence of VTE during hospitalization was highest in the 3rd tertile group (1st tertile, 0.3%; 2nd tertile, 0.3%; 3rd tertile, 3.6%; P<0.001). Even after adjusting for confounders in the multivariable logistic regression model, the higher D-dimer levels in the 3rd tertile (≥1.1 μg/mL) were independently associated with a higher risk of VTE during hospitalization (adjusted odds ratio 4.83 [95% confidence interval 1.93–12.11; P<0.001]; reference=1st tertile). Conclusions: Higher D-dimer levels at admission were associated with a higher risk of VTE events during hospitalization in Japanese patients with COVID-19. This could be helpful in determining patient-specific anticoagulation management strategies for COVID-19 in Japan.
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Affiliation(s)
| | - Sen Yachi
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | - Makoto Takeyama
- Japan Community Health Care Organization Tokyo Shinjuku Medical Center
| | | | | | | | | | | | - Satoshi Ikeda
- Nagasaki University Graduate School of Biomedical Sciences
| | | | | | | | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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Maeda K, Hirayama N, Nakata H, Oka K. Improvement of a Pb2Ti2O5.4F1.2 Photoanode for Solar Water Splitting by Refining the Cocatalyst and Electrolyte. BCSJ 2021. [DOI: 10.1246/bcsj.20210143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookaya-ma, Meguro-ku, Tokyo 152-8550, Japan
| | - Naoki Hirayama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookaya-ma, Meguro-ku, Tokyo 152-8550, Japan
| | - Hiroko Nakata
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookaya-ma, Meguro-ku, Tokyo 152-8550, Japan
| | - Kengo Oka
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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Nakamura N, Adachi K, Shinshi M, Tashima Y, Nakata H. [Revascularization of the Right Common Carotid Artery Prior to Central Repair for Stanford Type A Acute Aortic Dissection with Brain Malperfusion:Report of a Case]. Kyobu Geka 2021; 74:558-560. [PMID: 34193795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A 67-year-old woman had sudden loss of consciousness and chest and back pain. She was transported by ambulance about two hours later. Computed tomography (CT) showed dissection of the aorta, the brachiocephalic artery and the right common carotid artery (RCCA). RCCA was completely obstructed. Emergency surgery was conducted one hour later. RCCA's blood flow was reestablished prior to hemi-arch replacement. Postoperative CT revealed diminishment of the false lumen and recovery of the blood flow of RCCA, and she was discharged on foot without any complications.
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Affiliation(s)
- Noriyuki Nakamura
- Department of Cardiovascular Surgery, Yokosuka Municipal Uwamachi Hospital, Yokosuka, Japan
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Yamashita Y, Maruyama Y, Satokawa H, Nishimoto Y, Tsujino I, Sakashita H, Nakata H, Okuno Y, Ogihara Y, Yachi S, Toya N, Shingaki M, Ikeda S, Yamamoto N, Aikawa S, Ikeda N, Hayashi H, Ishiguro S, Iwata E, Umetsu M, Kondo A, Iwai T, Kobayashi T, Mo M, Yamada N. Incidence and Clinical Features of Venous Thromboembolism in Hospitalized Patients With Coronavirus Disease 2019 (COVID-19) in Japan. Circ J 2021; 85:2208-2214. [PMID: 34011824 DOI: 10.1253/circj.cj-21-0169] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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] [Indexed: 12/15/2022]
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) reportedly causes venous thromboembolism (VTE), but the status of this complication in Japan was unclear.Methods and Results:The VTE and COVID-19 in Japan Study is a retrospective, multicenter cohort study enrolling hospitalized patients with COVID-19 who were evaluated with contrast-enhanced computed tomography (CT) examination at 22 centers in Japan between March 2020 and October 2020. Among 1,236 patients with COVID-19, 45 (3.6%) were evaluated with contrast-enhanced CT examination. VTE events occurred in 10 patients (22.2%), and the incidence of VTE in mild, moderate, and severe COVID-19 was 0%, 11.8%, and 40.0%, respectively. COVID-19 patients with VTE showed a higher body weight (81.6 vs. 64.0 kg, P=0.005) and body mass index (26.9 vs. 23.2 kg/m2, P=0.04), and a higher proportion had a severe status for COVID-19 compared with those without. There was no significant difference in the proportion of patients alive at discharge between patients with and without VTE (80.0% vs. 88.6%, P=0.48). Among 8 pulmonary embolism (PE) patients, all were low-risk PE. CONCLUSIONS Among a relatively small number of patients undergoing contrast-enhanced CT examination in Japanese real-world clinical practice, there were no VTE patients among those with mild COVID-19, but the incidence of VTE seemed to be relatively high among severe COVID-19 patients, although all PE events were low-risk without significant effect on mortality risk.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Eriko Iwata
- Nankai Medical Center Japan Community Health Care Organization
| | | | - Akane Kondo
- Shikoku Medical Center for Children and Adults
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Nakamura N, Adachi K, Shinshi M, Imamura Y, Tajima Y, Nakata H. [Patch Repair by Anterolateral Thoracotomy with Partial Sternotomy for Saccular Aortic Arch Aneurysm with Severe Thoracic Deformity:Report of a Case]. Kyobu Geka 2021; 74:147-151. [PMID: 33976023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An 87-year-old male was referred to our hospital for surgery of saccular aortic arch aneurysm. As he had a history of thoracoplasty on his left side due to pulmonary tuberculosis, his aortic arch adhered to the apex of the left thorax. Total arch replacement(TAR) via median sternotomy was considered difficult, and anterolateral thoracotomy with partial sternotomy (ALPS) was performed. During surgery, we considered TAR difficult even with ALPS approach. Taking account of his age, aneurysmectomy and patch repair were chosen instead of TAR to shorten operation time. Although he suffered from diffuse cerebral infarction, he was discharged without neurological deficit at 39 days after operation.
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Affiliation(s)
- Noriyuki Nakamura
- Department of Cardiovascular Surgery, Yokosuka Municipal Uwamachi Hospital, Yokosuka, Japan
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Hirayama N, Nakata H, Wakayama H, Nishioka S, Kanazawa T, Kamata R, Ebato Y, Kato K, Kumagai H, Yamakata A, Oka K, Maeda K. Solar-Driven Photoelectrochemical Water Oxidation over an n-Type Lead–Titanium Oxyfluoride Anode. J Am Chem Soc 2019; 141:17158-17165. [DOI: 10.1021/jacs.9b06570] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Naoki Hirayama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Hiroko Nakata
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Haruki Wakayama
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Shunta Nishioka
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Tomoki Kanazawa
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Ryutaro Kamata
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yosuke Ebato
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Kosaku Kato
- Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan
| | - Hiromu Kumagai
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Akira Yamakata
- Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan
| | - Kengo Oka
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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Nakamura N, Adachi K, Shinshi M, Akiyoshi K, Nakata H. [Pseudoaneurysm with Infective Endocarditis Ten Years After the Resection of Pseudoaneurysm Complicated with Myocardial Infarction;Report of a Case]. Kyobu Geka 2019; 72:923-927. [PMID: 31588110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A 76-year-old female was referred to our hospital for fever and chillness. She was diagnosed with pneumonia and sepsis, and methicillin-resistant Staphylococcus aureus (MRSA)was detected by the sputum culture. Echocardiography showed mobile vegetation and left ventricular pseudoaneurysm at the apex. As she had a history of ventricular pseudoaneurysmectomy 10 years before, we considered the patient had developed infective endocarditis at the surgical site. Surgical treatment was needed because of the rapidly growing pseudoaneurysm despite the use of antibacterial agents. She successfully underwent resection of the pseudoaneurysm and MRSA was also detected in the culture of the previous vascular graft patch. Antibacterial agents were administrated for 6 weeks, and she was discharged at 53 days after operation.
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Affiliation(s)
- Noriyuki Nakamura
- Department of Cardiovascular Surgery, Yokosuka Municipal Uwamachi Hospital, Yokosuka, Japan
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Yoshinouchi Y, Hirano M, Nakata H, Nomyamai K, Tanabe S, Kim EY, Iwata H. Structure-activity relationships of Baikal seal estrogen receptors and environmental phenols. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kusadokoro S, Adachi K, Shinshi M, Hori D, Nakata H, Yamaguchi A. [Combined Thoraco-abdominal Aortic Aneurysm Repair and Coronary Artery Bypass Grafting through a Left Thoracotomy]. Kyobu Geka 2018; 71:588-592. [PMID: 30185756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Approximately 40% of the patients with aortic aneurysm have coronary artery disease(CAD), which is an important factor contributing to early mortality associated with aneurysm surgery. Combined coronary artery bypass grafting (CABG)and aortic aneurysm repair of the ascending aorta to the aortic arch is often performed through a median sternotomy due to a good surgical exposure. However, treatment strategy of thoraco-abdominal aortic aneurysm(TAAA) combined with CAD is often controversial. We report a successful case of a 69-year-old man who underwent TAAA repair and CABG through a left thoracotomy. Left thoracotomy via the 5th intercostal space with para-rectal incision provides a good surgical exposure of the thoraco-abdominal aorta and the left anterior descending artery(LAD). LAD was revascularized with a saphenous vein graft which was anastomosed to the descending aorta, followed by TAAA repair. The postoperative course was uneventful and the patient was discharged on 13th postoperative day without any complications.
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Affiliation(s)
- Sho Kusadokoro
- Department of Cardiovascular Surgery, Yokosuka General Hospital Uwamachi, Yokosuka, Japan
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Nakata H, Kakigi R, Shibasaki M. Warm-, hot- and pain-related neural activities depending on baseline skin temperatures. Eur J Pain 2018; 22:1791-1799. [PMID: 29956432 DOI: 10.1002/ejp.1275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2018] [Indexed: 01/09/2023]
Abstract
BACKGROUND This study investigated the characteristics of temperature-related evoked neural activities to baseline skin temperatures on target and adjacent sites using contact heat evoked potentials (CHEPs). METHODS Contact heat evoked potentials were recorded from 12 normal subjects during three stimuli: target temperatures for "warm", "hot" and "pain" were set at 41, 46 and 51 °C, respectively. The baseline temperature was separately set at 30, 35 and 40 °C under all conditions, and a heat pulse was delivered over the right forearm at 41 °C under the warm condition, at 46 °C under the hot condition and at 51 °C under the pain condition. RESULTS The N2-P2 amplitude was significantly larger at the 40 °C baseline than at the 30 and 35 °C baselines during the pain condition, whereas no significant differences were observed during the hot and warm conditions. In addition, the effects of an interference warm stimulation to adjacent sites were examined; however, no significant effects were observed. CONCLUSIONS These results suggest that the priming effects of temperature on CHEPs were only observed under the pain condition, indicating the specificity of thermal pain, as well as a difference in the neural mechanisms responsible for thermal noxious and innocuous processing in human brains. SIGNIFICANCE This study using CHEPs shows the importance of baseline and target skin temperatures to investigate the characteristics of temperature-related neural activities. This measure may contribute to understanding of warm-, hot-, and pain-related neural activities in human brains.
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Affiliation(s)
- H Nakata
- Faculty of Human Life and Environment, Nara Women's University, Japan
| | - R Kakigi
- Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan
| | - M Shibasaki
- Faculty of Human Life and Environment, Nara Women's University, Japan
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Halbach S, Kowalski C, Enders A, Pfaff H, Ernstmann N, Nakata H. Psycho-oncology care in breast cancer: Determinants of use and need over the course of the disease. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx189.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Halbach
- Center for Health Communication and Health Service Research (CHSR), Bonn, Germany
| | - C Kowalski
- German Cancer Society (DKG), Berlin, Germany
| | - A Enders
- Institute of Medical Sociology, Health Services Research, and Rehabilitation Science (IMVR), Cologne, Germany
| | - H Pfaff
- Institute of Medical Sociology, Health Services Research, and Rehabilitation Science (IMVR), Cologne, Germany
| | - N Ernstmann
- Center for Health Communication and Health Service Research (CHSR), Bonn, Germany
| | - H Nakata
- Center for Health Communication and Health Service Research (CHSR), Bonn, Germany
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Abstract
To ascertain serial changes on chest radiography attributable to aging, 16 parameters and 4 pulmonary parenchymal manifestations were assessed at 2 intervals; namely, 18.5 and 10 years after initial radiography in healthy men (n = 51) and women (n = 149) (age range 41–82 years). The transverse cardiac diameter, cardiothoracic ratio, and aortic arch transverse diameter increased significantly in both sexes from the initial to the final examinations. Although several other factors changed significantly, these changes were relatively small and the individual variations large. Initially, 13% and finally, 27% of the subjects exhibited at least one of the selected pulmonary manifestations.
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Abstract
A 59-year-old man with hypertension and severe renal dysfunction was diagnosed as having adult glomerulocystic kidney disease. MR imaging of the kidney showed a diffuse reduction of the intensity of the renal cortex with a loss of normal cortico-medullary differentiation on T1-weighted images. Numerous small cortical cysts were also demonstrated. These MR findings complemented the results of the biopsy and were useful for making a definitive diagnosis.
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Abstract
Four patients with adrenal metastases from hepatocellular carcinoma (HCC) diagnosed with computed tomography are described. In three, the metastases showed a central area of low density due to tumor necrosis, irregular contrast enhancement, and a well-defined margin. They measured 8 cm or more in diameter. In one, the adrenal metastasis was at first a relatively small homogeneously solid mass, but later, when it grew larger, a central low density developed. Since the adrenal gland is the second most common site of metastasis from HCC at autopsy, a combination of an adrenal tumor and a liver tumor should suggest this possibility.
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Affiliation(s)
- K. Nakamura
- Department of Radiology, University of Occupational and Environmental Health School of Medicine, Yahatanishi-ku, Kitakyusyu-shi 807, Japan
| | - Y. Sato
- Department of Radiology, University of Occupational and Environmental Health School of Medicine, Yahatanishi-ku, Kitakyusyu-shi 807, Japan
| | - H. Nakata
- Department of Radiology, University of Occupational and Environmental Health School of Medicine, Yahatanishi-ku, Kitakyusyu-shi 807, Japan
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Mizuguchi N, Nakata H, Kanosue K. Motor imagery beyond the motor repertoire: Activity in the primary visual cortex during kinesthetic motor imagery of difficult whole body movements. Neuroscience 2016; 315:104-13. [DOI: 10.1016/j.neuroscience.2015.12.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/06/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
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Sakamoto K, Nakata H, Kakigi R. P14: The effect of mastication on Go/No-go decisional processing: an eventrelated potential study. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50177-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Nakata H, Sakamoto K, Kakigi R. P12: The relationship between reaction time and response variability and somatosensory No-Go potentials. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50175-7] [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: 10/25/2022]
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32
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Manabe N, Haruma K, Ito M, Takahashi N, Takasugi H, Wada Y, Nakata H, Katoh T, Miyamoto M, Tanaka S. Efficacy of adding sodium alginate to omeprazole in patients with nonerosive reflux disease: a randomized clinical trial. Dis Esophagus 2012; 25:373-80. [PMID: 22050449 DOI: 10.1111/j.1442-2050.2011.01276.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [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: 12/11/2022]
Abstract
Nonerosive reflux disease (NERD) is the most common form of gastroesophageal reflux disease. Patients with NERD have a lower response rate to proton pump inhibitors (PPIs) than patients with erosive esophagitis when gauged from relief of heartburn. Sodium alginate decreases the acidity of refluxate and protects the esophageal mucosa. However, whether the addition of sodium alginate to PPI therapy can improve NERD symptoms remains unknown. Accordingly, the aim of this study was to evaluate the efficacy of adding sodium alginate to basal PPI therapy for NERD. Patients who had experienced heartburn on at least 2 days per week during the 1-month period before entering the study and had no endoscopic mucosal breaks (grade M or N according to Hoshihara's modification of the Los Angeles classification) were randomized to one of two treatments for 4 weeks: omeprazole (20 mg once daily) plus sodium alginate (30 mL four times a day) (group A) or omeprazole (20 mg once daily) alone (group B). Eighty-seven patients were enrolled, and 76 patients were randomly assigned to group A (n = 36) or group B (n = 40). Complete resolution of heartburn for at least 7 consecutive days by the end of treatment was significantly more common in group A (56.7%) than in group B (25.7%). One patient from group A had mild drug-related diarrhea that was not clinically serious. In conclusion, omeprazole combined with sodium alginate was better than omeprazole alone in Japanese patients with NERD.
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Affiliation(s)
- N Manabe
- Division of Endoscopy and Ultrasonography, Department of Clinical Pathology and Laboratory Medicine, Kawasaki Medical School, Kurashiki, Japan.
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Wakayama T, Nakata H, Matsumoto K, Iseki S. Loss of hepatocyte growth factor receptor in mouse Sertoli cells leads to impaired spermatogenesis and male infertility. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abe C, Uto Y, Nakae T, Shinmoto Y, Sano K, Nakata H, Teraoka M, Endo Y, Maezawa H, Masunaga SI, Nakata E, Hori H. Evaluation of the in vivo radiosensitizing activity of etanidazole using tumor-bearing chick embryo. J Radiat Res 2011; 52:208-214. [PMID: 21436611 DOI: 10.1269/jrr.10122] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Chick embryos have been used as alternative experimental animals in various research fields, including virology, immunology, toxicology, oncology, and embryology. Until now, there have been no in vivo models using chick embryo to evaluate radiosensitizing activity. Here, the in vivo radiosensitizing activity of etanidazole, a well-known hypoxic cell radiosensitizer, was evaluated using tumor-bearing chick embryo. On the basis of tumor growth, drug administration and X-ray irradiation were performed on day 15 chick embryo, with the endpoint being day 18 chick embryo. In day 15 chick embryo, an X-ray irradiation dose of equal or less than 10 Gy did not cause significant tumor growth suppression. Intravenous administration of equal or less than 1.0 mg of etanidazole did not cause tumor growth suppression. Neither doses of equal or less than 8 Gy of irradiation nor 1.0 mg of etanidazole caused fatality of the chick embryo. On the basis of these results, we evaluated the radiosensitizing effect of a combination treatment with 8 Gy of irradiation and 1.0 mg of etanidazole. As noted above, 1.0 mg of etanidazole alone and 8 Gy of irradiation alone did not show tumor growth suppression. In contrast, a combination treatment with 8 Gy of irradiation and 1.0 mg of etanidazole showed 35% of significant tumor growth suppression. Thus, we succeeded in evaluating the in vivo radiosensitizing activity of etanidazole using tumor-bearing chick embryo. These results suggest that the use of tumor-bearing chick embryo may be part of a promising system for evaluating radiosensitizing activity.
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Affiliation(s)
- Chiaki Abe
- Department of Life System, Institute of Technology and Science, Graduate School, The University of Tokushima, Tokushima, Japan
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Ueno D, Isobe T, Ramu K, Tanabe S, Alaee M, Marvin C, Inoue K, Someya T, Miyajima T, Kodama H, Nakata H. Spatial distribution of hexabromocyclododecanes (HBCDs), polybrominated diphenyl ethers (PBDEs) and organochlorines in bivalves from Japanese coastal waters. Chemosphere 2010; 78:1213-9. [PMID: 20096439 DOI: 10.1016/j.chemosphere.2009.12.058] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 12/09/2009] [Accepted: 12/20/2009] [Indexed: 05/04/2023]
Abstract
In order to elucidate the spatial distribution of brominated flame retardants (BFRs) in the Japanese coastal environment, hexabromocyclododecanes (HBCDs), polybrominated diphenyl ethers (PBDEs) and organochlorines (OCs: PCBs, DDTs, CHLs, HCHs, HCB) were determined in bivalves (oysters and mussels) collected from Japanese coastal waters. HBCDs and PBDEs were detected in all samples analyzed. Concentration ranges of HBCDs were 12-5200 ng g(-1) lipid wt., followed by PCBs (20-3100 ng g(-1))>PBDEs (3.1-86 ng g(-1) lipid wt.). The highest concentration of HBCDs was found in the Osaka region. This result indicates that HBCDs are ubiquitous and predominant compounds in bivalves from the Japanese coastal waters. Since no species differences between oysters and mussels were observed for the bioaccumulation properties of HBCDs and PBDEs, oysters could be utilized for BFR contamination monitoring worldwide as an alternative to mussels. Global comparisons between oysters and mussels showed that HBCD concentrations in Japan are among the highest levels reported from Asia and Europe. Estimated dietary exposures of HBCDs and PBDEs through seafood were 0.45-34 ng kg body weight(-1)d(-1), and 0.054-6.8 ng kg body weight(-1)d(-1), respectively. These exposure levels were more than 1000 times lower than the lowest observable effects or no observable adverse effects levels for HBCDs and PBDEs, respectively.
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Affiliation(s)
- D Ueno
- Faculty of Agriculture, Saga University, Honjo-cho 1, Saga, Japan.
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Nukada T, Nakata H, Katano T, Hirai K, Yoshii M. Optical detection of the interaction of N-type Ca2+ channels with G proteins at the single protein level. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.2062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nakata H, Watanabe K, Murakami Y, Gao P, Tsuiji K, Nishimura K, Plotnikoff GA, Kurihara N, Irie Y, Ishige A. Stress on a postpartum mother inhibits the secretion of growth hormone in the offspring and causes persistent growth impairment. Methods Find Exp Clin Pharmacol 2009; 31:433-441. [PMID: 19907718 DOI: 10.1358/mf.2009.31.7.1407221] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Children exposed to environmental stress in the early neonatal period often develop psychiatric or somatic diseases in adulthood. In the present study in mice, we examined how postpartum stress on the mother influences their pups and thus tried to provide new insight into the management of idiopathic short stature. The dams were exposed to daily 3-h immobilization stress (IS) only for 3 weeks from the day after delivery. When compared to the pups of nonstressed dams (control pups), those of the IS dams (IS pups) showed lower body weight and height, which persisted even into adulthood. Their nutritional status was normal. The IS pups also showed low serum concentrations of insulin-like growth factor I (IGF-I) and poor responses to growth hormone-releasing hormone (GHRH) stimulation on day 22 and were behaviorally hyperactive at 8 weeks. Immunohistochemical analysis demonstrated that the number of pituitary GH-positive cells in response to treatment with GHRH was markedly decreased in the IS pups compared to the control pups. The IS dams did not show apparent behavioral abnormalities except downregulation of glucocorticoid receptor (GR) gene expression in the hippocampus. These results suggest that the perturbation of GH secretion in the pituitary glands is involved in the lifelong growth impairment of the IS pups.
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Affiliation(s)
- H Nakata
- Center for Kampo Medicine, Keio University School of Medicine, Tokyo, Japan
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38
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Nakata H, Watanabe K, Murakami Y, Gao P, Tsuiji K, Nishimura K, Plotnikoff G, Kurihara N, Irie Y, Ishige A. Stress on a postpartum mother inhibits the secretion of growth hormone in the offspring and causes persistent growth impairment. ACTA ACUST UNITED AC 2009. [DOI: 10.1358/mf.2009.31.7.1415892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Wasaka T, Kida T, Nakata H, Akatsuka K, Kakigi R. Characteristics of sensori-motor interaction in the primary and secondary somatosensory cortices in humans: a magnetoencephalography study. Neuroscience 2007; 149:446-56. [PMID: 17869442 DOI: 10.1016/j.neuroscience.2007.07.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2007] [Revised: 07/25/2007] [Accepted: 07/26/2007] [Indexed: 11/30/2022]
Abstract
We studied sensori-motor interaction in the primary (SI) and secondary somatosensory cortex (SII) using magnetoencephalography. Since SII in both hemispheres was activated following unilateral stimulation, we analyzed SIIc (contralateral to stimulation) as well as SIIi (ipsilateral to stimulation). Four tasks were performed in human subjects in which a voluntary thumb movement of the left or right hand was combined with electrical stimulation applied to the index finger of the left or right hand: L(M)-L(S) (movement of the left thumb triggered stimulation to the left finger), L(M)-R(S) (movement of the left thumb triggered electrical stimulation to the right finger), R(M)-R(S) (movement of the right thumb triggered electrical stimulation to the right finger), and R(M)-L(S) (movement of the right thumb triggered electrical stimulation to the left finger). Stimulation to the index finger only (S condition) was also recorded. In SI, the amplitude of N20m and P35m was significantly attenuated in the R(M)-R(S) and L(M)-L(S) tasks compared with the S condition, but that for other tasks showed no change, corresponding to a conventional gating phenomenon. In SII, the R(M)-L(S) task significantly enhanced the amplitude of SIIc but reduced that of SIIi compared with the S condition. The L(M)-L(S) and R(M)-R(S) tasks caused a significant enhancement only in SIIi. The L(M)-R(S) task enhanced the amplitude only in SIIc. The laterality index showed that SII modulation with voluntary movement was more dominant in the hemisphere ipsilateral to movement but was not affected by the side of stimulation. These results provided the characteristics of activities in somatosensory cortices, a simple inhibition in SI but complicated changes in SII depending on the side of movement and stimulation, which may indicate the higher cognitive processing in SII.
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Affiliation(s)
- T Wasaka
- Department of Integrative Physiology, National Institute for Physiological Sciences, Myodaiji, Okazaki, 444-8585, Japan.
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Nakata H, Nakamura S. Brain-derived neurotrophic factor regulates AMPA receptor trafficking to post-synaptic densities via IP3R and TRPC calcium signaling. FEBS Lett 2007; 581:2047-54. [PMID: 17482902 DOI: 10.1016/j.febslet.2007.04.041] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2007] [Revised: 04/16/2007] [Accepted: 04/17/2007] [Indexed: 11/25/2022]
Abstract
The change in the number of post-synaptic alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA)-type glutamatergic receptors (AMPARs) by neuronal activity is recognized as a molecular basis of synaptic plasticity. Here, we show that Ca(2+) transients evoked by brain-derived neurotrophic factor (BDNF) induce translocation of a subunit of AMPAR, GluR1, but not NMDAR, to the post-synaptic membrane in cultured cortical pyramidal neurons. Among BDNF-induced Ca(2+) transients, that dependent on IP3R was fully required, while store-operated calcium influx through the non-selective cation channel TRPC (transient receptor potential canonical) was partially required for the GluR1 up-regulation, suggesting that spatial and temporal calcium signaling regulate translocation of GluR1 to the polarized membrane domain.
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Affiliation(s)
- Hiroko Nakata
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8502, Japan.
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41
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Nakata H, Nakamura S. Essential role of activation of PKA and ERK by BDNF for AMPA receptor translocation to postsynaptic sites. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.872] [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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Tomiyama M, Horio T, Kamide K, Nakamura S, Yoshihara F, Nakata H, Nakahama H, Kawano Y. Reverse white-coat effect as an independent risk for left ventricular concentric hypertrophy in patients with treated essential hypertension. J Hum Hypertens 2006; 21:212-9. [PMID: 17167525 DOI: 10.1038/sj.jhh.1002127] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recent studies have shown that the converse phenomenon of white-coat hypertension called 'reverse white-coat hypertension' or 'masked hypertension' is associated with poor cardiovascular prognosis. We assessed the hypothesis that this phenomenon may specifically influence left ventricular (LV) structure in treated hypertensive patients. A total of 272 outpatients (mean age, 65 years) with chronically treated essential hypertension and without remarkable white-coat effect were enrolled. Patients were classified into two groups according to office and daytime ambulatory systolic blood pressure (SBP); that is subjects without (Group 1: office SBP > or =daytime SBP, n=149) and with reverse white-coat effect (Group 2: office SBP<daytime SBP, n=123). LV mass index and relative wall thickness were echocardiographically determined. In all subjects, LV mass index and relative wall thickness were positively correlated with daytime and 24-h SBP, but not with office SBP. In addition, these two indices were inversely correlated with office--daytime SBP difference. LV mass index (136+/-31 and 115+/-28 g/m(2), mean+/-s.d.) and relative wall thickness (0.49+/-0.09 and 0.46+/-0.07) were significantly greater in Group 2 than in Group 1. As for LV geometric patterns, Group 2 had a significantly higher rate of concentric hypertrophy compared with Group 1 (48 and 28%). Multivariate analyses revealed that the presence of reverse white-coat effect was a predictor for LV concentric hypertrophy, independent of age, sex, hypertension duration, antihypertensive treatment and ambulatory blood pressure levels. Our findings demonstrate that reverse white-coat effect is an independent risk factor for LV hypertrophy, especially concentric hypertrophy, in treated hypertensive patients.
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Affiliation(s)
- M Tomiyama
- Division of Hypertension and Nephrology, Department of Medicine, National Cardiovascular Center, Suita, Japan
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Saeki S, Matsuse H, Nakata H, Fukahori S, Miyahara Y, Kohno S. [Case of bronchial asthma complicated with Takotsubo cardiomyopathy after frequent epinephrine medication]. Nihon Kokyuki Gakkai Zasshi 2006; 44:701-5. [PMID: 17087335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A 62-year-old man with non-topic severe persistent asthma and chronic obstructive disease suffered severe asthma exacerbation. Epinephrine was repeatedly injected subcutaneously (0.3mg x 8 times in four hours) in addition to intravenous methylprednisolone for his severe asthma. Despite these treatments, his symptoms steadily deteriorated and thus he was transferred to our hospital. He did not have chest pain or a sensation of compression, while ECG on admission demonstrated ST elevation, loss of R-wave progression, negative T waves and QT interval prolongation, suggesting ischemic heart disease. Nonetheless creatine kinase and its MB isozyme were within normal range and myosin light chain I and troponin T were only mildly elevated. Echocardiography demonstrated apical dyskinesia and hypersystole in the basal region of the heart. Finally this case was diagnosed as Takotsubo cardiomyopathy, probably due to catecholamine-mediated myocardial stunning by overuse of epinephrine for acute severe asthma exacerbation. Abnormal findings of ECG and echocardiography became normal without any specific treatments for the heart.
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Affiliation(s)
- Sachiko Saeki
- Second Department of Internal Medicine, Nagasaki University School of Medicine
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Ayabe T, Matsuzaki Y, Shimizu T, Hara M, Tomita M, Enomoto Y, Nakata H, Kuroki M, Ito H, Kataoka H, Onitsuka T. [New method for localization of the small ground-glass opacity lesion in resected lung]. Kyobu Geka 2006; 59:377-82. [PMID: 16715888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A small lesion showing ground-glass opacity (GGO) by preoperative computed tomography (CT) is sometimes difficult to detect after lobectomy when it locates in the central part of the lobe. In order to facilitate to identify the lesion for marking pathological specimen, we developed a new method using CT. After surgery, the resected pulmonary lobe was expanded with airflow through the bronchial stump and the target lesion was examined with CT. The laser beam of the CT on the surface of the lung is used as a guiding line for cutting. Through the application of this method for 2 clinical cases, it was found to be possible to exactly identify the GGO lesion from the surface of the resected lung enabling to visualize a fresh surface of the lesion like a CT image with minimal destruction of the structure.
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Affiliation(s)
- T Ayabe
- Department of Second Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Hara A, Fukahori S, Nakata H, Fukushima C, Matsuse H, Kohno S. [A case of anaphlaxis caused by mite-contaminated Okonomi-yaki]. Arerugi 2006; 55:574-7. [PMID: 16883095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/30/2005] [Accepted: 01/03/2006] [Indexed: 05/11/2023]
Abstract
A 21-year-old man, who had suddenly developed dyspnea with sneeze, cough and nasal congestion following supper, was admitted to our hospital because of hypoxemia and hypercapnia. Physical examination revealed wheezing in all lung fields and skin flushing. He took home-made Okonomi-yaki made from flour, which had been opened few months ago, and then had been remained uncooked at room temperature. Skin prick tests showed positive for problem flour and mite, but negative for just opened control flour. Collectively, we gave his diagnosis of anaphylaxis caused by mite-contaminated Okonomi-yaki.
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Affiliation(s)
- Atsuko Hara
- Second Department of Internal Medicine, Nagasaki University, Nagasaki
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Matsuse H, Nakata H, Fukahori S, Tsuchida T, Kawano T, Tomari S, Fukushima C, Matsuo N, Asai S, Kohno S. A clinical evaluation of definitive and clinical allergic bronchopulmonary mycosis. Intern Med 2006; 45:759-62. [PMID: 16847364 DOI: 10.2169/internalmedicine.45.1751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/06/2022] Open
Abstract
OBJECTIVE The present study aims to overcome problems associated with the early diagnosis of allergic bronchopulmonary mycosis (ABPM) using the current criteria. PATIENTS AND METHODS Clinical features including radiographic findings from 10 patients with definitive ABPM based on the diagnostic criteria of Rosenberg-Patterson were compared with those from 9 patients with ABPM clinically diagnosed by respiratory allergy specialists. RESULTS ABPM should be considered in patients with peripheral blood eosinophilia and pulmonary infiltration and/or central bronchiectasis when serum total IgE is elevated. Complication by bronchial asthma suggested ABPM, but was not essential. The expectoration of sputum containing solid components was a critical factor in patients with a history in ABPM. Evaluation of sputum cultures, serum specific IgE antibodies, skin tests and precipitating antibodies were required to establish a diagnosis, but the positive rate of these tests remained low. CONCLUSIONS Even when a definitive diagnosis cannot be established, systemic corticosteroid therapy should be initiated for clinically diagnosed ABPM to prevent irreversible pulmonary dysfunction.
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Affiliation(s)
- Hiroto Matsuse
- Second Department of Internal Medicine, Nagasaki University School of Medicine, Sakamoto
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47
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Yamada M, Iwasaka Y, Matsuki A, Trochkine D, Kim YS, Zhang D, Nagatani T, Shi GY, Nagatani M, Nakata H, Shen Z, Chen B, Li G. Feature of Dust Particles in the Spring Free Troposphere over Dunhuang in Northwestern China: Electron Microscopic Experiments on Individual Particles Collected with a Balloon-borne Impactor. ACTA ACUST UNITED AC 2005. [DOI: 10.1007/s11267-005-0741-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Matsuse H, Kondo Y, Saeki S, Nakata H, Fukushima C, Mizuta Y, Kohno S. Naturally occurring parainfluenza virus 3 infection in adults induces mild exacerbation of asthma associated with increased sputum concentrations of cysteinyl leukotrienes. Int Arch Allergy Immunol 2005; 138:267-72. [PMID: 16215328 DOI: 10.1159/000088728] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Accepted: 07/21/2005] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Viral respiratory tract infections represent the most frequent cause of asthma exacerbation in both children and adults, but the precise mechanism of such exacerbation remains unknown. OBJECTIVES To determine the critical mediator of naturally occurring parainfluenza virus (PIV) 3-induced mild asthma exacerbations in adults. METHODS The study subjects were 19 adult asthmatics with mild asthma exacerbation (peak expiratory flow = 60-80% of predicted before bronchodilator use and >80% of predicted after initial bronchodilator treatment). Differential cell counts and concentrations of inflammatory markers including eosinophil cationic protein (ECP), cysteinyl leukotrienes (cysLTs), interleukin (IL)-5, IL-10 and IL-12 were measured in the induced sputum obtained from adults with PIV3- (n = 9) and non-cold-induced (n = 10) exacerbation of asthma during both acute and convalescent phases. RESULTS PIV3 infection was confirmed by the presence of viral RNA in nasopharyngeal aspirates. Mild exacerbation of asthma was not associated with significant changes in sputum differential cell counts. Concentrations of sputum ECP and cytokines were comparable between PIV3 and non-cold-induced patients. In contrast, PIV3 infection was associated with a significant increase in sputum cysLTs during the acute phase of mild asthma exacerbation. CONCLUSIONS Our results identified cysLTs as a critical mediator of PIV3-induced acute asthma exacerbation.
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Affiliation(s)
- Hiroto Matsuse
- Second Department of Internal Medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, Japan.
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Kuroda N, Hamauzu T, Toi M, Yamaoka K, Miyazaki E, Hiroi M, Nakata H, Taguchi H, Enzan H. Pulmonary adenocarcinoma with micropapillary component: an immunohistochemical study. Case report. APMIS 2005; 113:550-4. [PMID: 16086826 DOI: 10.1111/j.1600-0463.2005.apm_151.x] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Micropapillary carcinoma has been described in various organs, including the breast, urinary bladder, ovary and lung. We here present a case of pulmonary micropapillary carcinoma in a 72-year-old Japanese man who died of respiratory failure and septic shock, following which autopsy was performed. A mass measuring 2.5 x 2.5 x 2.5 cm was observed in the left lower lobe of the lung. The tumor showed moderately differentiated papillary adenocarcinoma with a focal micropapillary component. Carcinomatous lymphangiosis was also observed in the left lung and metastatic lesions were observed in the bilateral lung, liver, vertebra, muscle layer of the urinary bladder, right adrenal gland, spleen and lymph nodes. The micropapillary component was predominant at some metastatic sites. Immunohistochemically, both the adenocarcinoma and micropapillary components were positive for cytokeratin (CK) 7, CK19, TTF (thyroid transcription factor)-1, carcinoembryonic antigen (CEA) and surfactant apoprotein A (SP-A), and negative for CK20, estrogen receptor, progesterone receptor, uroplakin III, and CA125. The invasive area of the conventional adenocarcinoma component contained a large number of myofibroblasts, whereas the stroma of the micropapillary component contained a small number of myofibroblasts. However, no myofibroblasts were observed in the stroma of the central core of the non-invasive micropapillary carcinoma. Several lymphatic invasions by neoplastic cells were identified in the peripheral area of the micropapillary component using D2-40 antibody. The immunohistochemical profile may be helpful in determining the primary location of the neoplasm containing micropapillary features. Myofibroblasts are present in the stroma of the invasive neoplastic nests in the micropapillary component as well as the conventional adenocarcinoma component, and D2-40 monoclonal antibody may be useful for evaluating the lymphatic invasion of pulmonary micropapillary carcinoma.
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Affiliation(s)
- N Kuroda
- Department of Pathology, Program of Bioregulation and Genetics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku City, Kochi, Japan.
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Wasaka T, Nakata H, Kida T, Kakigi R. Changes in the centrifugal gating effect on somatosensory evoked potentials depending on the level of contractile force. Exp Brain Res 2005; 166:118-25. [PMID: 15856201 DOI: 10.1007/s00221-005-2333-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Accepted: 03/08/2005] [Indexed: 10/25/2022]
Abstract
In this study, we investigated the somatosensory evoked potentials (SEPs) during the preparatory period of self-initiated plantar flexion at different force levels of muscle contraction and elucidated the mechanism behind the centrifugal gating effect on somatosensory information processing. We recorded SEPs following stimulation of the tibial nerve at the popliteal fossa during the preparatory period of a 20% maximal voluntary contraction (MVC) and 50% MVC. The preparatory period was divided into two sub-periods based on the components of movement-related cortical potentials, the negative slope (NS sub-period) and the Bereitschaftspotential (BP sub-period). The subjects were instructed to concentrate on the movement and not to pay attention to the continuous electrical stimulation. Pre-movement SEPs were averaged separately during the two sub-periods under each MVC condition. The mean amplitudes of BP and NS were larger during the 50% MVC than the 20% MVC. As for the components of SEPs, during the NS sub-period the amplitude of P30 under the 50% MVC and N40 under both conditions were significantly smaller than that in the stationary sequence, and N40 amplitude was significantly smaller during the 50% MVC than the 20% MVC. During the BP sub-period, the amplitude of P30 and N40 during the 50% MVC was significantly smaller than during the stationary sequence, while it was not significantly different between the 20% and 50% MVCs. In conclusion, the extent of the centrifugal gating effect on SEPs was dependent on the activities of motor-related areas, which generated the NS and BP.
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Affiliation(s)
- T Wasaka
- Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan.
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