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Kallen EJJ, Revers A, Fernández-Rivas M, Asero R, Ballmer-Weber B, Barreales L, Belohlavkova S, de Blay F, Clausen M, Dubakiene R, Ebisawa M, Fernández-Perez C, Fritsche P, Fukutomi Y, Gislason D, Hoffmann-Sommergruber K, Jedrzejczak-Czechowicz M, Knulst AC, Kowalski ML, Kralimarkova T, Lidholm J, Metzler C, Mills ENC, Papadopoulos NG, Popov TA, Purohit A, Reig I, Seneviratne SL, Sinaniotis A, Takei M, Versteeg SA, Vassilopoulou AE, Vieths S, Welsing PMJ, Zwinderman AH, Le TM, Van Ree R. A European-Japanese study on peach allergy: IgE to Pru p 7 associates with severity. Allergy 2023; 78:2497-2509. [PMID: 37334557 DOI: 10.1111/all.15783] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 06/20/2023]
Abstract
BACKGROUND Pru p 3 and Pru p 7 have been implicated as risk factors for severe peach allergy. This study aimed to establish sensitization patterns to five peach components across Europe and in Japan, to explore their relation to pollen and foods and to predict symptom severity. METHODS In twelve European (EuroPrevall project) and one Japanese outpatient clinic, a standardized clinical evaluation was conducted in 1231 patients who reported symptoms to peach and/or were sensitized to peach. Specific IgE against Pru p 1, 2, 3, 4 and 7 and against Cup s 7 was measured in 474 of them. Univariable and multivariable Lasso regression was applied to identify combinations of parameters predicting severity. RESULTS Sensitization to Pru p 3 dominated in Southern Europe but was also quite common in Northern and Central Europe. Sensitization to Pru p 7 was low and variable in the European centers but very dominant in Japan. Severity could be predicted by a model combining age of onset of peach allergy, probable mugwort, Parietaria pollen and latex allergy, and sensitization to Japanese cedar pollen, Pru p 4 and Pru p 7 which resulted in an AUC of 0.73 (95% CI 0.73-0.74). Pru p 3 tended to be a risk factor in South Europe only. CONCLUSIONS Pru p 7 was confirmed as a significant risk factor for severe peach allergy in Europe and Japan. Combining outcomes from clinical and demographic background with serology resulted in a model that could better predict severity than CRD alone.
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Affiliation(s)
- E J J Kallen
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - A Revers
- Epidemiology and Data Science (EDS), Amsterdam University Medical Center location University of Amsterdam, Amsterdam, The Netherlands
| | - M Fernández-Rivas
- Department of Allergy, Hospital Clinico San Carlos, Universidad Complutense, IdISSC, ARADyAL, Madrid, Spain
| | - R Asero
- Ambulatorio di Allergologia, Clinica San Carlo, Paderno Dugnano, Italy
| | - B Ballmer-Weber
- Allergy Unit, Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
- Faculty of Medicine, University of Zürich, Zürich, Switzerland
- Clinic for Dermatology and Allergology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - L Barreales
- Department of Allergy, Hospital Clinico San Carlos, Universidad Complutense, IdISSC, ARADyAL, Madrid, Spain
| | - S Belohlavkova
- Medical Faculty Pilsen, Charles University Prague, Prague, Czech Republic
| | - F de Blay
- Allergy Division, Chest Disease Department, Strasbourg University Hospital, Strasbourg, France
| | - M Clausen
- Landspitali University Hospital, University of Iceland, Faculty of Medicine, Reykjavik, Iceland
| | - R Dubakiene
- Clinic of Chest diseases, Allergology and Immunology Institute of Clinic al Medicine Medical Faculty Vilnius University, Vilnius, Lithuania
| | - M Ebisawa
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - C Fernández-Perez
- Servicio de Medicina Preventiva, Area De Santiago de Compostela y Barbanza, Instituto de Investigación Sanitaria de Santiago (IDIS) A Coruña, Santiago, Spain
| | - P Fritsche
- Allergy Unit, Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - Y Fukutomi
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - D Gislason
- Landspitali University Hospital, University of Iceland, Faculty of Medicine, Reykjavik, Iceland
| | - K Hoffmann-Sommergruber
- Department of Pathophysiology and Allergy Research, Medical University of Vienna, Vienna, Austria
| | - M Jedrzejczak-Czechowicz
- Department of Immunology and Allergy, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - A C Knulst
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - M L Kowalski
- Department of Immunology and Allergy, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - T Kralimarkova
- Clinic of Occupational Diseases, University Hospital Sv. Ivan Rilski, Sofia, Bulgaria
| | - J Lidholm
- Thermo Fisher Scientific, Uppsala, Sweden
| | - C Metzler
- Allergy Unit, Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland
| | - E N C Mills
- Division of Infection, Immunity and Respiratory Medicine, Manchester Institute of Biotechnology & Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK
| | - N G Papadopoulos
- Allergy Department, 2nd Pediatric Clinic, University of Athens, Athens, Greece
| | - T A Popov
- Clinic of Occupational Diseases, University Hospital Sv. Ivan Rilski, Sofia, Bulgaria
| | - A Purohit
- Allergy Division, Chest Disease Department, Strasbourg University Hospital, Strasbourg, France
| | - I Reig
- Allergist and Pediatrician, Nápoles y Sicilia Health Center, Valencia, Spain
| | - S L Seneviratne
- Institute of Immunity and Transplantation, University College London, London, UK
| | - A Sinaniotis
- Allergy Department, 2nd Pediatric Clinic, University of Athens, Athens, Greece
| | - M Takei
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - S A Versteeg
- Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - A E Vassilopoulou
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Thessaloniki, Greece
| | - S Vieths
- Paul-Ehrlich-Institut, Federal Institute for Vaccines and Biomedicines, Langen, Germany
| | - P M J Welsing
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - A H Zwinderman
- Epidemiology and Data Science (EDS), Amsterdam University Medical Center location University of Amsterdam, Amsterdam, The Netherlands
| | - T M Le
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - R Van Ree
- Departments of Experimental Immunology and of Otorhinolaryngology, Amsterdam University Medical Center, Amsterdam, The Netherlands
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2
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Sakai K, Darma PN, Sejati PA, Wicaksono R, Hayashi H, Takei M. Gastric functional monitoring by gastric electrical impedance tomography (gEIT) suit with dual-step fuzzy clustering. Sci Rep 2023; 13:514. [PMID: 36627333 PMCID: PMC9832012 DOI: 10.1038/s41598-022-27060-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/23/2022] [Indexed: 01/12/2023] Open
Abstract
Gastric Function has been successfully estimated by gastric electrical impedance tomography (gEIT) Suit with dual-step fuzzy clustering. The gEIT Suit which are made of elastic cloth with dual-planar electrodes and compact data acquisition (DAQ) system measures gastric impedance Z to visualize the gastric conductivity distribution σ. The dual-step fuzzy clustering extracts the clustered gastric conductivity distribution kσ, which accurately estimates the gastric function. The gEIT Suit with dual-step fuzzy clustering are applied to eight healthy persons during liquid meal consumption to estimate the gastric function under gastric accommodation phase of 200, 400 and 600 mL based on the gastric emptying phase. As the results, the gEIT Suit successfully estimate the gastric function. By the measured impedance Z, the subjects have a mean temporal impedance [Formula: see text]= - 9.27 [Ohm] and p-value of that [Formula: see text] p(Z) = 0.0013[-]as the t-test result. In the case of gastric conductivity distribution σ, the subjects have a value of spatial mean conductivity distribution ⟨σ⟩ = 0.23[-] and p-value of that ⟨σ⟩ p(σ) = 0.0140[-]. Lastly, in the case gastric volume V, subjects have a gastric volume V = 12.44 [%] and p-value p(V) = 0.0664[-].
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Affiliation(s)
- K. Sakai
- grid.136304.30000 0004 0370 1101Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba-Shi, Japan
| | - P. N. Darma
- grid.136304.30000 0004 0370 1101Division of Fundamental Engineering, Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University JSPS International Research Fellow, Chiba-Shi, 263-8522 Japan
| | - P. A. Sejati
- grid.136304.30000 0004 0370 1101Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba-Shi, Japan
| | - R. Wicaksono
- grid.136304.30000 0004 0370 1101Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba-Shi, Japan
| | - H. Hayashi
- grid.136304.30000 0004 0370 1101Center for Frontier Medical Engineering, Chiba University, Chiba-Shi, Japan
| | - M. Takei
- grid.136304.30000 0004 0370 1101Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba-Shi, Japan
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3
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Yumita Y, Nagatomo Y, Takei M, Saji M, Goda A, Kohno T, Nakano S, Nishihata Y, Ikegami Y, Shiraishi Y, Kohsaka S, Yoshikawa T. “Target Heart Rate” calculated aiming at zero overlap of mitral E and A waves is useful for prediction of long-term outcome for patients with heart failure and reduced ejection fraction. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Lower heart rate (HR) is associated with more favourable long-term outcome in patients with heart failure with reduced ejection fraction (HFrEF). However, an optimal threshold of HR remains unclear. Targeted HR (THR), defined by echocardiographic deceleration time (DCT) to eliminated overlap of E and A waves, may aid in risk stratification of HFrEF patients.
Purpose
In this study, we aimed to clarify the impact of on long-term clinical outcome in patients with HFrEF.
Methods
In the multicenter WET-HF registry, 4000 consecutive patients hospitalized for acute decompensated HF (ADHF) were registered between 2006 and 2017. Among them, the patients with EF ≥40% or a history of atrial fibrillation were excluded. THR was calculated based on their DCT value measured in compensated HF phase during the index admission. The following formula was applied; THR (bpm)=93 - 0.13 × deceleration time (DCT, msec). A total of 876 patients with HFrEF were included in the present analysis (age: 72 [60–81], male: 69%) and the patients were divided into the 2 groups of HR at discharge ≤ THR (L group) and > THR (H group). The primary endpoint (PE) was defined as the composite of all-cause death and ADHF re-admission.
Results
Compared to the H group, the L group showed higher prevalence of males (74% vs. 66%, P=0.025) with higher body mass index (BMI, 23.2 vs. 22.2, P=0.016), hemoglobin (Hb, 12.9 vs. 12.4, P=0.031), albumin (Alb, 3.7 vs. 3.6, P=0.039) and larger left atrial diameter (LAD, 44 mm vs. 41 mm, P=0.002) and tricuspid regurgitation pressure gradient (TRPG, 29 mmHg vs. 27 mmHg, P=0.012). Age, estimated glomerular filtration rate (eGFR), LVEF (29% vs. 30%, P=NS) and E/e' (17.7 vs. 16.8, P=NS) were similar for both groups. At discharge, HR was lower in L group (66 [60–71] bpm vs. 80 [74–86] bpm, P<0.001), albeit there were no significant differences in b-blocker prescription (90% vs. 85%, P=0.069) or its dose (3.75 [1.25–7.25] mg vs. 2.5 [1.25–5] mg, P=0.11).
In the survival analysis, the L group showed a significantly lower rate of PE (P=0.03), whereas there was no significant difference in the incidence of PE between the patients with HR at discharge ≥70 bpm and <70 bpm (P=NS).
Multivariate Cox hazard analysis showed that HR at discharge ≤ THR was an independent predictor of PE (hazard ratio 0.67 [0.46–0.97], P=0.037), even after adjusting for confounding factors including age, sex, BMI, Hb, Alb, and b-blocker prescription, whereas HR at discharge <70 bpm was not (hazard ratio 0.94 [0.65–1.33], P=0.71).
Conclusion
THR was associated with long-term outcomes in patients with HFrEF after acute decompensation, suggesting that it may aid in tailored treatment for HR reduction in these patients.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
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Affiliation(s)
- Y Yumita
- National Defense Medical College, Department of Cardiology, Saitama, Japan
| | - Y Nagatomo
- National Defense Medical College, Department of Cardiology, Saitama, Japan
| | - M Takei
- Saiseikai Central Hospital, Department of Cardiology, Tokyo, Japan
| | - M Saji
- Sakakibara Heart Institute, Department of Cardiology, Tokyo, Japan
| | - A Goda
- Kyorin University School of Medicine, Department of Cardiology, Tokyo, Japan
| | - T Kohno
- Kyorin University School of Medicine, Department of Cardiology, Tokyo, Japan
| | - S Nakano
- Saitama Medical University, Department of Cardiology, Saitama, Japan
| | - Y Nishihata
- St. Luke's International Hospital, Department of Cardiology, Tokyo, Japan
| | - Y Ikegami
- National Hospital Organization Tokyo Medical Center, Department of Cardiology, Tokyo, Japan
| | - Y Shiraishi
- Keio University School of Medicine, Department of Cardiology, Tokyo, Japan
| | - S Kohsaka
- Keio University School of Medicine, Department of Cardiology, Tokyo, Japan
| | - T Yoshikawa
- Sakakibara Heart Institute, Department of Cardiology, Tokyo, Japan
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Kumagawa M, Matsumoto N, Miura K, Ogawa M, Takahashi H, Hatta Y, Kondo R, Koizumi N, Takei M, Moriyama M. Correlation between alterations in blood flow of malignant lymphomas after induction chemotherapies and clinical outcomes: a pilot study utilising contrast-enhanced ultrasonography for early interim evaluation of lymphoma treatment. Clin Radiol 2021; 76:550.e9-550.e17. [PMID: 33691950 DOI: 10.1016/j.crad.2021.02.007] [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: 12/21/2019] [Accepted: 02/04/2021] [Indexed: 02/07/2023]
Abstract
AIM To clarify the utility of contrast-enhanced ultrasonography (CEUS) for interim evaluation of response to chemotherapy in lymphoma treatment. MATERIALS AND METHODS CEUS was performed both before (day 0) and after the treatment (7 and/or 14 days), and a time-intensity curve was obtained. The patients were divided into two groups (complete remission [CR] group and non-CR group) according to the results of conventional response evaluation, and peak enhancement (PE), time to peak enhancement, perfusion index (PI), the total area under the curve during wash-in (AUC-in), and the total AUC were compared between the groups. RESULTS Among 27 patients with various types of lymphoma, the median change ratio of PE and PI at day 7 evaluation were significantly different between the CR group and the non-CR group (0.81 versus 1.39, p=0.017 for PE and 0.92 versus 2.09, p=0.010 for PI). The change ratio of PE < 1.09 (specificity: 86%; sensitivity, 88%) and PI < 1.65 (specificity: 86%; sensitivity: 94%) distinguished CR from non-CR. Patients who achieved a PE change ratio <1.09 or a PI change ratio <1.65 had significantly better estimated progression-free survival (p<0.001). CONCLUSION The present study demonstrated that changes in tumour perfusion parameters evaluated with CEUS at 1 week after the treatment initiation were significantly different between lymphoma patients in CR group and non-CR group. Alterations in perfusion parameters evaluated via CEUS could impact the prognosis of lymphoma patients.
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Affiliation(s)
- M Kumagawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - N Matsumoto
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan.
| | - K Miura
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan.
| | - M Ogawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - H Takahashi
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - Y Hatta
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - R Kondo
- Department of Mechanical Engineering and Intelligent Systems, Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu-shi, Tokyo, Japan
| | - N Koizumi
- Department of Mechanical Engineering and Intelligent Systems, Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu-shi, Tokyo, Japan
| | - M Takei
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
| | - M Moriyama
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, 30-1, Oyaguchi Kami-cho, Itabashi-ku, Tokyo, Japan
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5
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Takei M, Harada K, Miyazaki T, Kohsaka S, Matsushita K, Shiraishi Y, Shinme T, Shindo A, Miyamoto T, Kitano D, Kodera S, Nakano H, Yamamoto T, Takayama M. Effect of air pollution on acute heart failure hospitalization differ across specific heart failure populations. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Several report showed the association between ambient air pollution including particular matter under 2.5um (PM2.5) and increasing rate of hospitalization for heart failure. However, these report analyzed mainly cross-sectional, epidemiological data, thus the reports regarding association between vulnerability to PM2.5 and specific populations in acute heart failure (AHF) were scarce.
Purpose
1. To analyze the association between air pollution and rate of hospitalization for AHF
2. To analyze whether the vulnerability to air pollution differ between specific populations in AHF. Methods
A case-cross over analysis was conducted to 4980 consecutive patients registered for multicenter acute heart failure registry in 2017 in our city Japan. This registry enrolled patients transferred to cardiovascular care unit (80 institutions) via emergency medical services across our city area. Logistic regression analysis were conducted to estimate percentage changes in the rate of acute heart failure hospitalization associated with per 1μg/m3 PM2.5 concentration increase. We also conducted subgroup analysis for patients stratified by age, gender, comorbidities, left ventricular ejection fraction, and clinical scenario.
Results
An increase in 1 μg/m3 PM2.5 concentration corresponded to 2.9% (95% CI 1.2–4.6%) increase in AHF hospitalization. Patients with age younger than 75, without prior heart failure hospitalization, without history of hypertension, without anemia, and with reduced ejection fraction were more susceptible to increase in PM2.5 concentration (Figure).
Conclusions
Increase in PM2.5 concentration was associated with increased rate of AHF hospitalization. Effect of PM2.5 may differ across specific AHF subpopulations.
Figure 1
Funding Acknowledgement
Type of funding source: Other. Main funding source(s): Tokyo Metropolitan Government
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Affiliation(s)
- M Takei
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - K Harada
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Miyazaki
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - S Kohsaka
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - K Matsushita
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - Y Shiraishi
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Shinme
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - A Shindo
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Miyamoto
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - D Kitano
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - S Kodera
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - H Nakano
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - T Yamamoto
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
| | - M Takayama
- Tokyo CCU Network, Scientific Committee, Tokyo, Japan
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Ogawa R, Baidillah MR, Akita S, Takei M. Investigation of Physiological Swelling on Conductivity Distribution in Lower Leg Subcutaneous Tissue by Electrical Impedance Tomography. J Electr Bioimpedance 2020; 11:19-25. [PMID: 33584899 PMCID: PMC7531098 DOI: 10.2478/joeb-2020-0004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Indexed: 06/12/2023]
Abstract
There is a strong need for a non-invasive measurement technique that is capable of accurately identifying the physiological condition change or heterogeneity of subcutaneous adipose tissue (SAT) by localizing the abnormalities within the compartment. This paper aims to investigate the feasibility of Electrical Impedance Tomography (EIT) to assess the interstitial fluid in subcutaneous adipose tissue as an enhancement method of bioelectrical impedance spectroscopy (BIS). Here, we demonstrate the preliminary result of EIT with a wearable 16 electrodes sensor. The image-based reference EIT with fat weighted threshold method is proposed. In order to evaluate the performance of our novel method, a physiological swelling experiment is conducted, and Multi-Frequency Bioelectrical Impedance Analysis (MFBIA) is also applied as a comparison with EIT results. The experimental results showed that the proposed method was able to distinguish the physiological swelling condition and effectively to remove the unexpected background noise. Furthermore, the conductivity variation in the subcutaneous layer had a good correlation with extracellular water volume change from MFBIA data; the correlation coefficient R2 = 0.927. It is concluded that the proposed method provides a significant prospect for SAT assessment.
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Affiliation(s)
- R. Ogawa
- Graduate School of Science & Eng., Dept. Mechanical Eng., Chiba University, Chiba, Japan
| | - M. R. Baidillah
- Graduate School of Science & Eng., Dept. Mechanical Eng., Chiba University, Chiba, Japan
| | - S. Akita
- Graduate School of Medicine, Dept. Reconstructive & Aesthetic Surgery, Chiba University, Chiba, Japan
| | - M. Takei
- Graduate School of Science & Eng., Dept. Mechanical Eng., Chiba University, Chiba, Japan
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7
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Shinada K, Kohno T, Fukuda K, Higashitani M, Kawamatsu N, Kitai T, Shibata T, Takei M, Nochioka K, Nakazawa G, Shiomi H, Miyashita M, Mizuno A. 2206Prevalence and determinants of complicated grief in bereaved caregivers of patients admitted for cardiovascular diseases. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Few studies have examined complicated grief in bereaved caregivers of patients with cardiovascular diseases (CVD), in contrast with studies in caregivers of patients with cancers. We examined the prevalence and determinants of complicated grief among bereaved caregivers of patients with CVD.
Methods
We conducted a cross-sectional survey using a self-administered questionnaire for bereaved family members of CVD patients who had died in the cardiology departments of 9 tertiary care centers in Japan. We assessed bereaved caregiver grief status using the Brief Grief Questionnaire (BGQ), and its association with their depression (Patient Health Questionnaire-9 [PHQ-9]). Questionnaire also covered following associated factors: bereaved family member and patient characteristics, end-of-life care (Care Evaluation Scale [CES], a scale for assessment of the structure and process of care); and the quality of the deceased patients' death (Good Death Inventory [GDI]).
Results
A total of 269 bereaved caregivers (mean age, 64±12 years; 35% male) of patients with CVD (heart failure n=155 myocardial infarction n=32, cardiopulmonary arrest n=15, arrhythmia n=8, and others n=59) were enrolled in the study. Overall, 14.1% of the bereaved caregivers had complicated grief (BGQ≥8), 32.3% had subthreshold complicated grief (BGQ=5–7), and 13.3% had depression (PHQ-9≥10). Bereaved caregivers with complicated grief frequently developed depression (58% vs. 6%, p<0.001). Among the bereaved caregivers with complicated grief, the assessment of end-of-life care was worse (CES score: 28 [21–40] vs. 23 [19–39], p=0.04), and the assessment of the deceased patients' quality of death tended to be worse (GDI score: 4.0 [3.0–4.8] vs. 4.3 [3.7–4.9], p=0.05). The cause of admission as well as preferences of the patient and family (e.g., treatment [focusing on extending life vs. relieving discomfort], desire for information, place of end-of-life) were not associated with the prevalence of complicated grief. The prevalence of complicated grief was associated with loss of a spouse, poor psychological health during the deceased patients' admission, and poor preparation for the patient's imminent death (all p<0.05). Bereaved caregivers with complicated grief had experienced more decisional burdens regarding the deceased patients' treatment (55% vs. 25%, p=0.001). Notably, 64% of bereaved caregivers with complicated grief were not treated (i.e., neither routine follow-up by psychiatrists/psychotherapist nor prescription for anti-depressants/tranquilizers).
Conclusions
The prevalence of complicated grief of bereavement was 14.0%. When subthreshold complicated grief was included, the prevalence of complicated grief increased to include half of the caregivers; therefore, routine screening of the bereaved could be recommended. Clinicians should pay particular attention to bereaved families with high risk factors to identify those at risk for future development of complicated grief.
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Affiliation(s)
- K Shinada
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - T Kohno
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - K Fukuda
- Keio University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
| | - M Higashitani
- Tokyo Medical University Ibaraki Medical Center, Department of Cardiology, Ibaraki, Japan
| | - N Kawamatsu
- Mito Saiseikai General Hospital, Department of Cardiology, Ibaraki, Japan
| | - T Kitai
- Kobe City Medical Center General Hospital, Departments of 1) Cardiovascular Medicine and 2) Clinical Research Support, Kobe, Japan
| | - T Shibata
- Kurume University School of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Fukuoka, Japan
| | - M Takei
- Tokyo Saiseikai Central Hospital, Department of Cardiology, Tokyo, Japan
| | - K Nochioka
- Tohoku University Graduate School of Medicine, Department of Cardiovascular Medicine, Sendai, Japan
| | - G Nakazawa
- Tokai University School of Medicine, Department of Cardiology, Kanagawa, Japan
| | - H Shiomi
- Kyoto University Graduate School of Medicine, Department of Cardiology, Kyoto, Japan
| | - M Miyashita
- Tohoku University Graduate School of Medicine, Division of Palliative Nursing, Health Sciences, Sendai, Japan
| | - A Mizuno
- St. Luke's International Hospital, Department of Cardiology, Tokyo, Japan
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8
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Endo A, Sawano M, Ikemura N, Takei M, Suzuki K, Hasegawa T, Takahashi T, Nakagawa S, Fukuda K, Kohsaka S. P684Long-term outcomes in patients with cancer undergoing percutaneous coronary intervention: analysis from a Japan multicenter registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Cancer and cardiovascular disease (CVD) is the most common cause of death in developed countries, and substantial overlap exist in their medical care. However, the detailed and updated information on outcome of cancer patients with cardiovascular disease (CVD), particularly in clinically significant coronary artery disease (CAD) remain unknown.
Purpose
We sought to describe the prevalence and long-term outcomes of cancer patients undergoing percutaneous coronary intervention (PCI), which has become a coronerstone in the management of CVD.
Methods
Patient data extracted from a regional prospectiveprocedure-based multicenter registry for PCI was analyzed. A total of 4,455 patients who underwent PCI at 15 hospitals within metropolitan Tokyo from September 2008 to 2012 were followed for 2 years. “Active” cancer patient was defined as having a history of cancer not cured or in remission. We analyzed in acute and stable presentation.The occurrence of clinical outcomes was assessed via Kaplan-Meier survival curve, and Cox-regression hazard model to adjust for known clinical predictors.
Results
Within the studied patients, 173 (3.9%) had a concomitant “active” cancer at the time of intervention. There was a significant difference between the patients with and without active cancer in each situation. In stable presentation, cancer group were older, lower BMI, frequently had silent ischemia, COPD and cerebrovascular/peripheral disease, and less often had dyslipidemia compared with non-cancer group. In acute presentation, cancer group were older, frequently had COPD, CKD, peripheral disease and history of HF compared with non-cancer group. The prescription rate of RAAS inhibitor was lower in the cancer group than in the non-cancer group in acute presentation. Notably, in both acute and stable presentation, these patients had significantly higher risk of all-cause mortality (HR 8.01: 95%, p<0.001 and HR5.53: 95%, p<0.001, respectively), and they were also at higher risk of major cardo- and cerebrovascular events (MACCE; HR2.38, p<0.001, HR2.33, p=0.001), when referenced to non-cancer patients after 2 year of follow-up.
Conclusion
Cancer patient was present in 3.9% of all PCI patients and was strongly associated with both non-cardiac and cardiac adverse events.
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Affiliation(s)
- A Endo
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - M Sawano
- Keio University School of Medicine, Cardiology, Tokyo, Japan
| | - N Ikemura
- Keio University School of Medicine, Cardiology, Tokyo, Japan
| | - M Takei
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - K Suzuki
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - T Hasegawa
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - T Takahashi
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - S Nakagawa
- Tokyo Saiseikai Central Hospital, Tokyo, Japan
| | - K Fukuda
- Keio University School of Medicine, Cardiology, Tokyo, Japan
| | - S Kohsaka
- Keio University School of Medicine, Cardiology, Tokyo, Japan
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Shiraishi Y, Kohsaka S, Katsuki T, Harada K, Miyamoto T, Matsushita K, Iida K, Takei M, Fukuda K, Yamamoto T, Nagao K, Takayama M. P2622Use of intravenous vasodilators in patients hospitalized with acute heart failure: insights from Tokyo cardiovascular care unit network database. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Despite recommendations from clinical practice guidelines, there is scant evidence confirming the effects of vasodilators on clinical outcomes in patients with acute heart failure (AHF).
Purpose
We sought to investigate the effects of intravenous vasodilators on clinical outcomes and to identify the potential patient populations that would benefit from its use.
Methods
Data of 26 212 consecutive patients urgently hospitalized for AHF between 2009 and 2015 were extracted from a multicenter data registration system (Tokyo Cardiovascular Care Unit Network Database, including 72 institutions within the Tokyo metropolitan area in Japan). Patients who did not present with typical AHF episodes, including those without pulmonary congestion on physical and/or chest X-ray and serum B-type natriuretic peptide level <500 pg/ml, as well as those who had hypotension and/or hypoperfusion (systolic blood pressure [SBP] <100 mmHg) as dominant presentation, were excluded. Propensity scores were calculated with multiple imputation and 1:1 matching performed between patients with and without vasodilators. The primary endpoint was in-hospital mortality and the secondary endpoints were length of intensive/cardiovascular care unit (ICU/CCU) stay and hospital stay.
Results
Overall, 8 863 patients were included in the present analysis; they were predominantly male (57%) with a median age of 79 (interquartile range: 70–86) years. Compared with the group without vasodilator use, the vasodilator group had higher SBPs and heart rates and higher frequency of assisted ventilation use, but lower frequency of intravenous diuretics use. After propensity score matching, there were no significant differences in in-hospital mortality rates (7.8% vs. 8.9% in patients without vasodilators, p=0.16) or in length of ICU/CCU stay (5.8 days vs. 5.4 days, p=0.44) and hospital stay (22.7 days vs. 23.8 days, p=0.22) between the groups. However, in subgroup analyses, favorable impacts of vasodilator use on in-hospital mortality were observed among patients who had higher SBPs and among those who had no atrial fibrillation upon admission (Figure). In addition, vasodilators were likely to be more effective in AHF patients with SBP increasing; while levels below 140 mmHg of SBP appeared to be associated with an increased risk for mortality among patients treated with vasodilators compared with those without vasodilators.
Figure 1
Conclusions
In patients with AHF, vasodilator use was not universally associated with improved in-hospital outcomes; however, its effect was dependent of individual clinical presentation. Detailed phenotyping might aid tailoring of treatment strategies for patients with AHF.
Acknowledgement/Funding
the Tokyo Metropolitan Government
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Affiliation(s)
| | | | | | | | | | | | - K Iida
- Tokyo CCU Network, Tokyo, Japan
| | - M Takei
- Tokyo CCU Network, Tokyo, Japan
| | | | | | - K Nagao
- Tokyo CCU Network, Tokyo, Japan
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10
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Yokoe I, Kobayashi H, Kobayashi Y, Giles JT, Yoneyama K, Kitamura N, Takei M. Impact of tocilizumab on N-terminal pro-brain natriuretic peptide levels in patients with active rheumatoid arthritis without cardiac symptoms. Scand J Rheumatol 2018; 47:364-370. [DOI: 10.1080/03009742.2017.1418424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- I Yokoe
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
- Division of Rheumatology, Itabashi Chuo Medical Center, Tokyo, Japan
| | - H Kobayashi
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Y Kobayashi
- Department of Advanced Biomedical Imaging Informatics, St. Marianna University School of Medicine, Kawasaki, Japan
| | - JT Giles
- Division of Rheumatology, Columbia University, College of Physicians and Surgeons, New York, USA
| | - K Yoneyama
- Department of Cardiology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - N Kitamura
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - M Takei
- Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
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11
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Kobayashi Y, Kobayashi H, Giles J, Yokoe I, Nishiwaki A, Takei M. Impact of biological treatment on left ventricular function and morphology in rheumatoid arthritis patients without cardiac symptoms, assessed by cardiac magnetic resonance imaging. Scand J Rheumatol 2017; 46:328-329. [PMID: 28276954 DOI: 10.3109/03009742.2016.1173722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Y Kobayashi
- a Department of Advanced Biomedical Imaging Informatics , St Marianna University School of Medicine , Kawasaki , Japan
| | - H Kobayashi
- b Division of Haematology and Rheumatology, Department of Medicine , Nihon University School of Medicine , Tokyo , Japan
| | - J Giles
- c Division of Rheumatology , Columbia University College of Physicians and Surgeons , New York , NY , USA
| | - I Yokoe
- b Division of Haematology and Rheumatology, Department of Medicine , Nihon University School of Medicine , Tokyo , Japan
| | - A Nishiwaki
- b Division of Haematology and Rheumatology, Department of Medicine , Nihon University School of Medicine , Tokyo , Japan
| | - M Takei
- b Division of Haematology and Rheumatology, Department of Medicine , Nihon University School of Medicine , Tokyo , Japan
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Yokoe I, Kobayashi H, Nishiwaki A, Sugiyama K, Nagasawa Y, Karasawa H, Iwata M, Nozaki T, Ikumi N, Inomata H, Shiraiwa H, Kitamura N, Takei M. FRI0204 Effect of Tocilizumab Treatment on QTc Interval in Patients with Rheumatoid Arthritis without Cardiac Symptoms. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4032] [Citation(s) in RCA: 2] [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: 11/03/2022]
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13
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Nishiwaki A, Kobayashi H, Nagasawa Y, Sugiyama K, Ikumi N, Nozaki T, Inomata H, Karasawa H, Shiraiwa H, Iwata M, Kitamura N, Takei M. FRI0119 The Association between QTc Interval and Myocardial Abnormalities in Rheumatoid Arthritis Patients without Cardiac Symptoms, by Assessed Using Cardiac Magnetic Resonance Imaging. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3187] [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: 11/03/2022]
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14
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Sugiyama K, Kobayashi H, Kobayashi Y, Nagasawa Y, Ikumi N, Nozaki T, Inomata H, Shiraiwa H, Karasawa H, Iwata M, Kitamura N, Matsukawa Y, Takei M. THU0337 Raynaud Phenomenon Is Associated with Myocardial Fibrosis in Primary Sjögren Syndrome, Assessed by A Cardiac Magnetic Resonance Approach: A Prospective Pilot Study at A Single Center. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2327] [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: 11/03/2022]
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15
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Yao J, Obara H, Sapkota A, Takei M. Development of three-dimensional integrated microchannel-electrode system to understand the particles' movement with electrokinetics. Biomicrofluidics 2016; 10:024105. [PMID: 27042247 PMCID: PMC4798993 DOI: 10.1063/1.4943859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/29/2016] [Indexed: 06/05/2023]
Abstract
An optical transparent 3-D Integrated Microchannel-Electrode System (3-DIMES) has been developed to understand the particles' movement with electrokinetics in the microchannel. In this system, 40 multilayered electrodes are embedded at the 2 opposite sides along the 5 square cross-sections of the microchannel by using Micro Electro-Mechanical Systems technology in order to achieve the optical transparency at the other 2 opposite sides. The concept of the 3-DIMES is that the particles are driven by electrokinetic forces which are dielectrophoretic force, thermal buoyancy, electrothermal force, and electroosmotic force in a three-dimensional scope by selecting the excitation multilayered electrodes. As a first step to understand the particles' movement driven by electrokinetic forces in high conductive fluid (phosphate buffer saline (PBS)) with the 3-DIMES, the velocities of particles' movement with one pair of the electrodes are measured three dimensionally by Particle Image Velocimetry technique in PBS; meanwhile, low conductive fluid (deionized water) is used as a reference. Then, the particles' movement driven by the electrokinetic forces is discussed theoretically to estimate dominant forces exerting on the particles. Finally, from the theoretical estimation, the particles' movement mainly results from the dominant forces which are thermal buoyancy and electrothermal force, while the velocity vortex formed at the 2 edges of the electrodes is because of the electroosmotic force. The conclusions suggest that the 3-DIMES with PBS as high conductive fluid helps to understand the three-dimensional advantageous flow structures for cell manipulation in biomedical applications.
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Affiliation(s)
- J Yao
- Department of Mechanical Engineering, Chiba University , Chiba 263-0022, Japan
| | - H Obara
- Department of Mechanical Engineering, Tokyo Metropolitan University , Tokyo 192-0397, Japan
| | - A Sapkota
- Department of Information and Computer Engineering, National Institute of Technology , Kisarazu College, Chiba 292-0041, Japan
| | - M Takei
- Department of Mechanical Engineering, Chiba University , Chiba 263-0022, Japan
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16
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Ito K, Kawachi M, Matsunaga Y, Hori Y, Ozaki T, Nagahama K, Hirayama M, Kawabata Y, Shiraishi Y, Takei M, Tanaka T. Acotiamide Hydrochloride, a Therapeutic Agent for Functional Dyspepsia, Enhances Acetylcholine-induced Contraction via Inhibition of Acetylcholinesterase Activity in Circular Muscle Strips of Guinea Pig Stomach. Drug Res (Stuttg) 2015; 66:196-202. [PMID: 26418413 DOI: 10.1055/s-0035-1564084] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Acotiamide is a first-in-class prokinetic drug approved in Japan for the treatment of functional dyspepsia. Given that acotiamide enhances gastric motility in conscious dogs and rats, we assessed the in vitro effects of this drug on the contraction of guinea pig stomach strips and on acetylcholinesterase (AChE) activity in stomach homogenate following fundus removal. We also investigated the serotonin 5-HT4 receptor agonist mosapride, dopamine D2 receptor and AChE inhibitor itopride, and representative AChE inhibitor neostigmine. Acotiamide (0.3 and 1 μM) and itopride (1 and 3 μM) significantly enhanced the contraction of gastric body strips induced by electrical field stimulation (EFS), but mosapride (1 and 10 μM) did not. Acotiamide and itopride significantly enhanced the contraction of gastric body and antrum strips induced by acetylcholine (ACh), but not that induced by carbachol (CCh). Neostigmine also significantly enhanced the contraction of gastric body strips induced by ACh, but not that by CCh. In contrast, mosapride failed to enhance contractions induced by either ACh or CCh in gastric antrum strips. Acotiamide exerted mixed inhibition of AChE, and the percentage inhibition of acotiamide (100 μM) against AChE activity was markedly reduced after the reaction mixture was dialyzed. In contrast, itopride exerted noncompetitive inhibition on AChE activity. These results indicate that acotiamide enhances ACh-dependent contraction in gastric strips of guinea pigs via the inhibition of AChE activity, and that it exerts mixed and reversible inhibition of AChE derived from guinea pig stomach.
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Affiliation(s)
- K Ito
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - M Kawachi
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - Y Matsunaga
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - Y Hori
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - T Ozaki
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - K Nagahama
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - M Hirayama
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - Y Kawabata
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - Y Shiraishi
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - M Takei
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
| | - T Tanaka
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan
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Kobayashi H, Kobayashi Y, Ikumi N, Inomata H, Kitamura N, Shiraiwa H, Nozaki T, Nishiwaki A, Karasawa H, Nagasawa Y, Matsukawa Y, Takei M. SAT0104 Subclinical Myocardial Inflammation and Fibrosis are Common in Active Rheumatoid Arthritis, Assessed by Cardiac Magnetic Resonance Imaging. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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18
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Sugiyama K, Kobayashi H, Kobayashi Y, Nagasawa Y, Ikumi N, Nozaki T, Inomata H, Shiraiwa H, Karasawa H, Kitamura N, Iwata M, Matsukawa Y, Takei M. FRI0472 Detection of Left Ventricular Morphology and Myocardial Abnormalities Using Contrast Cardiac Magnetic Resonance Imaging at 3.0 Tesla in Systemic Sclerosis Without Cardiac Manifestations. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3994] [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: 11/04/2022]
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19
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Ikumi N, Kobayashi H, Kobayashi Y, Sugiyama K, Nagasawa Y, Nishiwaki A, Nozaki T, Inomata H, Karasawa H, Shiraiwa H, Kitamura N, Matsukawa Y, Takei M. FRI0482 Cardiac Magnetic Resonance Imaging Reveals Myocardial Fibrosis and Inflammation in Polymyositis/Dermatomyositis Without Cardiac Manifestation: A Pilot Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2019] [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: 11/03/2022]
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20
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Kobayashi H, Kobayashi Y, Yokoe I, Inomata H, Ikumi N, Kitamura N, Shiraiwa H, Nozaki T, Takei M. FRI0054 Left Ventricular Function and Structure in Patients with Rheumatoid Arthritis without Cardiac Symptoms: Comparison between Nonbiologic and Biologic DMARD Treatment Groups. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1914] [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: 11/04/2022]
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21
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Inomata H, Kobayashi H, Kobayashi Y, Ikumi N, Yokoe I, Nagasawa Y, Sugiyama K, Nozaki T, Shiraiwa H, Kitamura N, Iwata M, Takei M. AB0321 IL-6 Blockade Reduces Circulating N-Terminal Pro-Brain Natriuretic Peptide Levels in Patients with Active Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2189] [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: 11/03/2022]
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22
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Ikumi N, Inomata H, Nagasawa Y, Sugiyama K, Nozaki T, Yokoe I, Shiraiwa H, Karasawa H, Kitamura N, Iwata M, Matsukawa Y, Kobayashi H, Kobayashi Y, Takei M. FRI0437 How do we Treat Patients with Focus Score ≥1, but not Consistent with the New American College of Rheumatology Classification Criteria for SjÖGren's Syndrome? Evaluation from Study in Japanese Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2684] [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: 11/04/2022]
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23
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Komatsu Y, Takei M, Yuki S, Fuse N, Furukawa S, Kato T, Takeda H, Kato M, Asaka M. Treatment of a Gilbert's Syndrome Patient with Irinotecan, Leucovorin and 5-Fluorouracil. J Chemother 2013; 17:111-4. [PMID: 15828453 DOI: 10.1179/joc.2005.17.1.111] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The patient was an elderly male who had radical surgery for sigmoid cancer in 2001. Owing to metastasis of his cancer to the left supraclavicular lymph nodes in 2002, the patient was admitted to our hospital for systemic chemotherapy. We started treatment with irinotecan, leucovorin, 5-fluorouracil (IFL). After administering 100 mg/m2 of irinotecan, 250 mg/m2 leucovorin and 600 mg/m2 5-fluorouracil to the patient on day 1, grade 3 leukopenia developed rapidly and grade 4 thrombocytopenia was observed on day 5. We excluded irinotecan from the medication and continued the administration of 5-fluorouracil and leucovorin, but his tumors had not been reduced sufficiently. Based on some examination results, we assumed that the patient had Gilbert's syndrome and that the severe side effects that occurred were due to prolongation of SN38 metabolism. We again administered irinotecan but at reduced dose (25 mg/m2). Four courses of this modified IFL were administered safely and the response was favorable.
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Affiliation(s)
- Y Komatsu
- Dept of Gastroenterology, Hokkaido University School of Medicine, Sapporo-city, Hokkaido, Japan.
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24
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Hayami H, Enokida H, Yamane T, Nakagawa M, Takei M. P352 Prevalence of pyuria and bacteriuria in patients with interstitial cystitis in Japan. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70593-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Nagahama K, Matsunaga Y, Kawachi M, Ito K, Tanaka T, Hori Y, Oka H, Takei M. Acotiamide, a new orally active acetylcholinesterase inhibitor, stimulates gastrointestinal motor activity in conscious dogs. Neurogastroenterol Motil 2012; 24:566-74, e256. [PMID: 22429221 DOI: 10.1111/j.1365-2982.2012.01912.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [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: 02/08/2023]
Abstract
UNLABELLED BACKGROUND Acotiamide hydrochloride (acotiamide), a novel selective acetylcholinesterase (AChE) inhibitor, has proven significantly effective in treating functional dyspepsia (FD) in clinical trials, particularly in alleviating meal-related symptoms. In the present study, we examined the gastrointestinal prokinetic effects of acotiamide administered orally or intraduodenally in conscious dogs and investigated in vivo and ex vivo anti-AChE activity of acotiamide to clarify its mechanism of prokinetic action. METHODS Gastrointestinal motility was measured in conscious dogs with chronically implanted force transducers. KEY RESULTS Oral administration of acotiamide stimulated postprandial gastroduodenal and colonic motor activities. Measurement of gastrointestinal motility showed that acotiamide, like itopride and mosapride, enhanced gastric antral motility. Further, acotiamide markedly improved clonidine (an α(2) -adrenoceptor agonist)-induced hypomotility in a dog model of gastric motor dysfunction. The postprandial gastric antral motility enhanced by acotiamide was completely abolished on treatment with the muscarinic receptor antagonist atropine. Results of an in vivo experiment on anti-AChE activity showed clearly increased acetylcholine-induced gastric motility on intraduodenal administration of acotiamide, just as observed with the AChE inhibitor neostigmine. Further, in ex vivo experiment, intraduodenal administration of acotiamide significantly inhibited AChE activity in canine gastric antrum. CONCLUSIONS & INFERENCES Our findings revealed that acotiamide administered through the alimentary tract exerts gastroprokinetic action via cholinergic pathways by inhibiting AChE activity. These results may also confirm the mechanism of action in clinical efficacy of acotiamide on FD.
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Affiliation(s)
- K Nagahama
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., Saitama, Japan.
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26
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Seki N, Shahab N, Kajioka S, Takei M, Yamaguchi A, Naito S. MP-05.04: Bladder compliance is associated with the amplitude of detrusor overactivity in men with symptomatic benign prostatic enlargement associated with detrusor overactivity. Urology 2010. [DOI: 10.1016/j.urology.2010.07.418] [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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27
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Kitamura N, Matsukawa Y, Takei M, Sawada S. Antiproteinuric effect of angiotensin-converting enzyme inhibitors and an angiotensin II receptor blocker in patients with lupus nephritis. J Int Med Res 2009; 37:892-8. [PMID: 19589275 DOI: 10.1177/147323000903700335] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Although the effects of angiotensin II receptor blockers (ARBs) on non-diabetic glomerulonephritis have been reported, studies of their effects on collagen-vascular diseases, particularly lupus nephritis, are limited. In this retrospective, observational study, systemic lupus erythematosus (SLE) patients (n = 7) with lupus nephritis and uncontrolled proteinuria were treated with an angiotensin-converting enzyme inhibitor followed by the ARB losartan (25 - 50 mg/day). Urinary protein excretion and renal function were evaluated. After 12 months of losartan, mean urinary protein excretion decreased significantly by 84.8%. Mean systolic and diastolic blood pressures also decreased significantly during the 12 months of losartan treatment, although not in normotensive patients. Complement 4, total complement activity and anti-dsDNA antibody levels, which are indices of SLE activity, and serum creatinine levels, which is an index of renal function, showed no change in response to losartan treatment. A more extensive evaluation of the effects of ARBs in patients with lupus nephritis and poorly controlled proteinuria is required.
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Affiliation(s)
- N Kitamura
- Division of Haematology and Rheumatology, Department of Medicine, School of Medicine, Nihon University, Tokyo, Japan.
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Doh DH, Jo HJ, Hwang TG, Koo BY, Takei M, Tanaka T, Uemura T. DEVELOPMENT OF AN ADAPTIVE STEREOSCOPIC-PIV SYSTEM FOR ANALYSIS OF THE FLOW-STRUCTURE INTERACTIONS (FSI) OF AIR-LIFTED BODIES. CHEM ENG COMMUN 2009. [DOI: 10.1080/00986440902938915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Suzuki S, Takei M, Nishio S, Inaba H, Sato A, Yamazaki M, Shinomiya K, Hashizume K. Spiking expression of mu-crystallin mRNA during treatment with methimazole in patients with graves' hyperthyroidism. Horm Metab Res 2009; 41:548-53. [PMID: 19280551 DOI: 10.1055/s-0029-1202865] [Citation(s) in RCA: 2] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
mu-Crystallin is an NADPH-dependent cytosolic T3-binding protein. A knockout study in mice showed that mu-crystallin has a physiological function as a reservoir of T3 in the cytoplasm in vivo. Patients with nonsyndromic deafness were reported to have point mutations in the mu-crystallin gene. The expression of mu-crystallin is regulated by multiple factors. The present study was performed to determine whether thyroid function is related to the expression of mu-crystallin mRNA in peripheral mononuclear cells. We examined 23 normal healthy male and female subjects and 15 patients with Graves' disease. mu-Crystallin protein expression was determined immunohistochemically in peripheral mononuclear cells. The expression of mu-crystallin mRNA was assessed by reverse transcription of total RNA from peripheral mononuclear cells followed by quantitative PCR. mu-Crystallin protein was detected in peripheral mononuclear cells. The mRNA expression was negatively correlated with age in normal female subjects. The values in female subjects were significantly higher than those in males. The values were positively correlated with serum TSH concentration. The values of the thyrotoxic patients with Graves' disease were lower than those in healthy subjects. A transient increase in mu-crystallin expression was observed within 14-42 days after the initial treatment with antithyroid medication. Thyroid hormone inversely relates to the expression of mu-crystallin mRNA in euthyroid mononuclear cells. Abrupt suppression of thyroid function leads to overexpression of mu-crystallin mRNA in thyrotoxic mononuclear cells. Thyroid hormone-regulated mu-crystallin expression may control thyroid hormone action via the intracytoplasmic T (3) capacity.
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Affiliation(s)
- S Suzuki
- Department of Aging Medicine and Geriatrics, Institute on Aging and Adaptation, Shinshu University, Graduate School of Medicine, Matsumoto, Japan.
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Yamane T, Takei M. Human resource development and visualization. J Vis (Tokyo) 2009. [DOI: 10.1007/bf03181933] [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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31
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Kitahara K, Takagi K, Kusunoki Y, Nishio S, Nozaki T, Inomata H, Takei M, Sawada S, Kawai S. Clinical value of second- and third-generation assays of anti-cyclic citrullinated peptide antibodies in rheumatoid arthritis. Ann Rheum Dis 2008; 67:1059-60. [PMID: 18556455 DOI: 10.1136/ard.2007.082826] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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32
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Seki N, Takei M, Yamaguchi A, Naito S. MP-07.11: Characteristics of voiding dysfunction in women with lower urinary tract disorders. Urology 2007. [DOI: 10.1016/j.urology.2007.06.295] [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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33
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Aoki K, Takei M. Visualizing is believing. J Vis (Tokyo) 2007. [DOI: 10.1007/bf03181812] [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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34
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Takei M. The 4th World Congress on Industrial Process Tomography. J Vis (Tokyo) 2006. [DOI: 10.1007/bf03181682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Kasagi N, Takei M. Transdisciplinary visualization techniques. J Vis (Tokyo) 2004. [DOI: 10.1007/bf03181524] [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: 11/29/2022]
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36
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Komatsu Y, Yuuki S, Fuse N, Takei M, Miyagishima T, Kudo M, Hashino S, Asaka M, Sakata Y. Phase I/II study of CPT-11 plus S-1 in patients with advanced gastric cancer. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4191] [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: 11/20/2022] Open
Affiliation(s)
- Y. Komatsu
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - S. Yuuki
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - N. Fuse
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - M. Takei
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - T. Miyagishima
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - M. Kudo
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - S. Hashino
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - M. Asaka
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
| | - Y. Sakata
- Hokkaido University, Sapporo, Japan; Misawa City Hospital, Misawa, Japan
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37
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Shiraiwa H, Takei M, Yoshikawa T, Azuma T, Kato M, Mitamura K, Ueki T, Kida A, Horie T, Seki N, Sawada S. Detection of Grb-2-related Adaptor Protein Gene (GRAP) and Peptide Molecule in Salivary Glands of MRL/lpr Mice and Patients with Sjögren's Syndrome. J Int Med Res 2004; 32:284-91. [PMID: 15174222 DOI: 10.1177/147323000403200308] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The pathogenesis of Sjögren's syndrome (SS) is poorly understood. In this study we used an in-house mouse spleen cDNA microarray to analyse genes in spleens from MRL/lpr (an SS mouse model) mice. We have previously demonstrated that GRAP genes were up-regulated in salivary glands of the same mice. The microarray analysis showed that seven out of 2304 genes were highly expressed in spleens from the MRL/ lpr mice, one of which was the GRAP gene. In other words, the GRAP gene is highly expressed in the salivary glands and spleen of MRL/lpr mice. We also carried out immunohistochemical studies. Mouse and human Grb-2-related adaptor protein ( GRAP) antigens were expressed on ductal cells and infiltrating lymphocytes in salivary glands of MRL /lpr mice and SS patients, but only weakly in controls (MRL/+ mice and individuals with salivary cysts). These results suggest that the GRAP gene might have a role in the pathogenesis of SS.
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Affiliation(s)
- H Shiraiwa
- First Department of Internal Medicine, Nihon University School of Medicine, Nerima Hikarigaoka Nihon University Hospital, Tokyo, Japan
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Takei M, Shiraiwa H, Omata S, Motooka N, Mitamura K, Horie T, Ookubo T, Sawada S. A New Tactile Skin Sensor for Measuring Skin Hardness in Patients with Systemic Sclerosis and Autoimmune Raynaud's Phenomenon. J Int Med Res 2004; 32:222-31. [PMID: 15080028 DOI: 10.1177/147323000403200217] [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: 11/16/2022] Open
Abstract
We used a new tactile sensor to measure the elastic properties of skin in patients with systemic sclerosis or Raynaud's phenomenon. The sensor consists of a piezoelectric vibrator with vibration pickup to measure frequency changes when the sensor is placed on the skin. The mean frequency change at the skin surface of the proximal third phalanx in patients with systemic sclerosis was significantly lower than in age- and sex-matched controls. The results in systemic sclerosis patients were statistically correlated to the Modified Rodnan Skin Thickness Score. This technique was also used to measure the therapeutic efficacy of salpogrelate, a new specific serotonin receptor antagonist. A greater mean frequency change was seen after treatment. We conclude that this new tactile sensor is useful for quantitatively measuring skin sclerosis and may help determine the efficacy of therapeutic treatments.
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Affiliation(s)
- M Takei
- First Division of Internal Medicine, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
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39
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Suga T, Akamatsu T, Kawamura Y, Saegusa H, Kajiyama M, Nakamura N, Takei M, Matsumoto A. Actual behaviour of N-butyl-2-cyanoacrylate (histoacryl) in a blood vessel: a model of the varix. Endoscopy 2002; 34:73-7. [PMID: 11778133 DOI: 10.1055/s-2002-19384] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [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: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS Though many gastric varices are treated endoscopically with n-butyl-2-cyanoacrylate, its behavior in varices is not known precisely. MATERIALS AND METHODS We created a varix model. A volume of 0.7 ml or 1.4 ml of 71.4 % n-butyl-2-cyanoacrylate, a tissue adhesive, was injected into vinyl tubes of 0.4, 0.6, 0.9, and 1.2 cm in diameter, which were filled with still blood or flowing blood. The tissue adhesive was also injected into the inferior vena cava or femoral vein of dogs. RESULTS N-butyl-2-cyanoacrylate was similarly polymerized in the vinyl tubes and the animal veins. A volume of 0.7 ml of the tissue adhesive could block all tubes up to 0.6 cm in diameter. A double quantity of the tissue adhesive could block tubes 0.9 and 1.2 cm in diameter, with flow velocities up to 10 cm/s and up to 5 cm/s, respectively. Some polymer masses were fragmented. CONCLUSIONS One rapid shot of the tissue adhesive can block a vessel 0.6 cm or less in diameter with fast flow velocity, and a vessel up to 1.2 cm in diameter with slow flow velocity. Fast blood flows in a larger diameter vessel and slow injection of the tissue adhesive may result in fragmentation. This model of the varix was useful for assessing the effect of tissue adhesive used to treat gastric varices.
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Affiliation(s)
- T Suga
- Second Department of Internal Medicine, Shinsu University School of Medicine, Nagano, Japan.
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40
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Takei M, Tsuboi M, Usui T, Hanaoka T, Kurogouchi F, Aruga M, Katagiri Y, Owa M, Kubo K, Kiyosawa K. Vagal stimulation prior to atrial rapid pacing protects the atrium from electrical remodeling in anesthetized dogs. Jpn Circ J 2001; 65:1077-81. [PMID: 11768001 DOI: 10.1253/jcj.65.1077] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Atrial electrical remodeling is thought to be the cause of the maintenance of atrial fibrillation (AF). Although the initiation and maintenance of AF is partially associated with autonomic nervous tone, vagally mediated AF does not tend to become permanent. Therefore, the effects of preceding vagal stimulation (VS) on the atrial effective refractory period (ERP) under electrical remodeling conditions were investigated in anesthetized dogs. Atrial ERPs were measured at 5 sites before and after a 7-h period of atrial rapid pacing in the control group. In the VS group, the vagus nerve was stimulated for 20 min before a period of atrial rapid pacing. Atrial rapid pacing shortened the ERP at each site in the control group (electrical remodeling). On the other hand, atrial rapid pacing after VS did not shorten the ERP at any site in the VS group. Tetrodotoxin, which was administered into the fatty tissue overlying the right atrial side of the right pulmonary vein junctions, blocked the protective effect of VS against the shortening of the ERP induced by atrial rapid pacing. In contrast, atropine did not interfere with such protective effects. These results suggest that VS prior to atrial rapid pacing protects the atrium from atrial electrical remodeling.
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Affiliation(s)
- M Takei
- Shinshu University School of Medicine, Second Department of Internal Medicine, Matsumoto, Nagano, Japan
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Abstract
The phototoxic potential of eight fluoroquinolones (norfloxacin, ofloxacin, enoxacin, ciprofloxacin, lomefloxacin, tosufloxacin, sparfloxacin and gatifloxacin) was evaluated by using three in vitro methods of cytotoxicity against mammalian cells, erythrocyte lysis and DNA strand breakage. All fluoroquinolones tested with the exception of gatifloxacin, an 8-methoxy quinolone, showed DNA strand breaking activities under UV-A irradiation. Their cytotoxicity against HeLa cells was also enhanced by UV-A irradiation. In particular, the phototoxic potential of sparfloxacin, enoxacin and lomefloxacin was high in both methods. Ofloxacin is very photocytotoxic against HeLa cells, while it has low potential to cause DNA strand breakage. Norfloxacin, ciprofloxacin and enoxacin were very photohemolytic, but sparfloxacin was not, indicating that the in vivo phototoxic potencies of fluoroquinolones might not be predictable by the photohemolysis study. Gatifloxacin, a non-phototoxic quinolone, showed no phototoxic potential in any of these three in vitro tests. These results suggest that determination of DNA strand breaking activity, combined with cytotoxicity against mammalian cells, is available to predict the phototoxic potential of fluoroquinolones without laboratory animals.
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Affiliation(s)
- T Yamamoto
- Central Research Laboratories, Kyorin Pharmaceutical Co., Ltd, 2399-1, Nogi-Mitarai, Shimotsuga-gun, 329-0114, Tochigi, Japan.
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Takei M, Fukuda H, Kishii R, Hosaka M. Target preference of 15 quinolones against Staphylococcus aureus, based on antibacterial activities and target inhibition. Antimicrob Agents Chemother 2001; 45:3544-7. [PMID: 11709337 PMCID: PMC90866 DOI: 10.1128/aac.45.12.3544-3547.2001] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.0] [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: 11/20/2022] Open
Abstract
The antibacterial activities and target inhibition of 15 quinolones against grlA and gyrA mutant strains were studied. The strains were obtained from wild-type Staphylococcus aureus MS5935 by selection with norfloxacin and nadifloxacin, respectively. The antibacterial activities of most quinolones against both mutant strains were lower than those against the wild-type strain. The ratios of MICs for the gyrA mutant strain to those for the grlA mutant strain (MIC ratio) varied from 0.125 to 4. The ratios of 50% inhibitory concentrations (IC(50)s) of quinolones against topoisomerase IV to those against DNA gyrase (IC(50) ratios) also varied, from 0.177 to 5.52. A significant correlation between the MIC ratios and the IC(50) ratios was observed (r = 0.919; P < 0.001). These results suggest that the antibacterial activities of quinolones against the wild-type strain are involved not only in topoisomerase IV inhibition but also in DNA gyrase inhibition and that the target preference in the wild-type strain can be anticipated by the MIC ratios. Based on the MIC ratios, the quinolones were classified into three categories. Type I quinolones (norfloxacin, enoxacin, fleroxacin, ciprofloxacin, lomefloxacin, trovafloxacin, grepafloxacin, ofloxacin, and levofloxacin) had MIC ratios of <1, type II quinolones (sparfloxacin and nadifloxacin) had MIC ratios of >1, and type III quinolones (gatifloxacin, pazufloxacin, moxifloxacin, and clinafloxacin) had MIC ratios of 1. Type I and type II quinolones seem to prefer topoisomerase IV and DNA gyrase, respectively. Type III quinolones seem to target both enzymes at nearly the same level in bacterial cells (a phenomenon known as the dual-targeting property), and their IC(50) ratios were approximately 2.
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Affiliation(s)
- M Takei
- Discovery Research Laboratories, Kyorin Pharmaceutical Co., Ltd., 2399-1, Nogi, Shimotsuga, Tochigi 329-0114, Japan.
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Ohkubo T, Takei M, Mitamura K, Horie T, Fujiwara S, Shimizu K, Ryu J, Shiraiwa H, Sawada S. Increased soluble CD4 molecules and the role of soluble CD4 production in patients with rheumatoid arthritis. J Int Med Res 2001; 29:488-96. [PMID: 11803732 DOI: 10.1177/147323000102900604] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We investigated the concentration of soluble CD4 molecules (sCD4) in serum, and the mechanism of sCD4 production from T lymphocytes, in patients with rheumatoid arthritis (RA). The concentration of sCD4 molecules was determined using a solid-phase enzyme-linked immunosorbent assay method. Using reverse transcription polymerase chain reaction (RT-PCR) techniques, we studied the presence of alternatively spliced mRNA encoding the transmembrane site of CD4, and the mRNA encoding a conservative region of the CD4 binding site of the human immunodeficiency virus (HIV), in the serum of RA patients. Levels of sCD4 found in RA patients were higher than in normal controls (199 U/ml compared with 8.4 U/ml, respectively), and correlated with additional medical parameters. The results of RT-PCR suggested that the higher sCD4 levels may be due to shedding from the cell membrane after protease digestion, not to alternative splicing or a reaction to viral binding to sCD4.
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Affiliation(s)
- T Ohkubo
- First Department of Internal Medicine, Nerima Hikarigaoka Nihon University Hospital, Nihon University School of Medicine, Tokyo, Japan
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Sawada S, Takei M. Epstein-Barr virus and rheumatoid arthritis. J Rheumatol 2001; 28:2363-4. [PMID: 11669183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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45
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Inoue Y, Takaue Y, Takei M, Kato K, Kanai S, Harada Y, Tobisu K, Noguchi M, Kakizoe T, Itoh K, Wakasugi H. Induction of tumor specific cytotoxic T lymphocytes in prostate cancer using prostatic acid phosphatase derived HLA-A2402 binding peptide. J Urol 2001; 166:1508-13. [PMID: 11547122] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
PURPOSE Human prostatic acid phosphatase is a prostate specific differentiation antigen. Prostatic acid phosphatase levels increase in the serum of patients with prostate cancer and its peptide from positions 299 to 307 (PAP 299-307) is recognized by HLA-A2 restricted cytotoxic T lymphocytes. We investigated whether HLA-A2402 binding prostatic acid phosphatase derived peptides induce HLA-A2402 restricted, tumor specific cytotoxic T lymphocytes from the peripheral blood mononuclear cells of patients with prostate cancer. MATERIALS AND METHODS Peptide binding activity was measured with RMA-S-A*A2402 cell lines and flow cytometry. Cytotoxic T-lymphocyte activity of the peripheral blood mononuclear cells of patients with prostate cancer and healthy donors was measured by interferon-gamma and (51)creatinine release assays. Prostatic acid phosphatase expression in the tumor cell lines at the messenger RNA and protein levels was investigated by reverse transcriptase-polymerase chain reaction and immunohistochemical analysis, respectively. RESULTS An HLA-A2402 binding, prostatic acid phosphatase derived peptide consisting of the prostatic acid phosphatase amino acid sequence from positions 213 to 221 (PAP 213-221, LYCESVHNF) showed the ability to induce HLA-A2402 restricted and tumor specific cytotoxic T lymphocytes, which are cytoxic to prostatic acid phosphatase positive tumor cells from the peripheral blood mononuclear cells of patients with prostate cancer. CONCLUSIONS PAP 213-221 may be appropriate as a cancer vaccine for specific immunotherapy in patients with HLA-A2402 positive prostate cancer.
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Affiliation(s)
- Y Inoue
- Pharmacology Division, Department of Urology, Transplantation Unit, National Cancer Center, Chuo-ku, Tokyo, Japan
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Fukuda H, Kishii R, Takei M, Hosaka M. Contributions of the 8-methoxy group of gatifloxacin to resistance selectivity, target preference, and antibacterial activity against Streptococcus pneumoniae. Antimicrob Agents Chemother 2001; 45:1649-53. [PMID: 11353607 PMCID: PMC90527 DOI: 10.1128/aac.45.6.1649-1653.2001] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Gatifloxacin (8-methoxy, 7-piperazinyl-3'-methyl) at the MIC selected mutant strains that possessed gyrA mutations at a low frequency (3.7 x 10(-9)) from wild-type strain Streptococcus pneumoniae IID553. AM-1147 (8-methoxy, 7-piperazinyl-3'-H) at the MIC or higher concentrations selected no mutant strains. On the other hand, the respective 8-H counterparts of these two compounds, AM-1121 (8-H, 7-piperazinyl-3'-methyl) and ciprofloxacin (8-H, 7-piperazinyl-3'-H), at one and two times the MIC selected mutant strains that possessed parC mutations at a high frequency (>2.4 x 10(-6)). The MIC of AM-1147 increased for the gyrA mutant strains but not for the parC mutant strains compared with that for the wild-type strain. These results suggest that fluoroquinolones that harbor 8-methoxy groups select mutant strains less frequently and prefer DNA gyrase, as distinct from their 8-H counterparts. The in vitro activities of gatifloxacin and AM-1147 are twofold higher against the wild-type strain, eight- and twofold higher against the first-step parC and gyrA mutant strains, respectively, and two- to eightfold higher against the second-step gyrA and parC double mutant strains than those of their 8-H counterparts. These results indicate that the 8-methoxy group contributes to enhancement of antibacterial activity against target-altered mutant strains as well as the wild-type strain. It is hypothesized that the 8-methoxy group of gatifloxacin increases the level of target inhibition, especially against DNA gyrase, so that it is nearly the same as that for topoisomerase IV inhibition in the bacterial cell, leading to potent antibacterial activity and a low level of resistance selectivity.
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Affiliation(s)
- H Fukuda
- Central Research Laboratories, Kyorin Pharmaceutical Co., Ltd., 2399-1, Mitarai, Nogi, Shimotsuga, Tochigi 329-0114, Japan.
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Ando T, Komaki G, Karibe M, Kawamura N, Hara S, Takii M, Naruo T, Kurokawa N, Takei M, Tatsuta N, Ohba M, Nozoe S, Kubo C, Ishikawa T. 5-HT2A promoter polymorphism is not associated with anorexia nervosa in Japanese patients. Psychiatr Genet 2001; 11:157-60. [PMID: 11702058 DOI: 10.1097/00041444-200109000-00008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 11/27/2022]
Abstract
Genetic factors have been implicated in playing a significant role in susceptibility to anorexia nervosa (AN). Among many candidate genes for AN, an association with the A allele of the -1438G/A polymorphism in the promoter region of the 5-HT2A receptor has been reported. However, these findings are controversial and all patients studied to date have been Caucasian. This study was designed to determine whether this association is reproducible in Japanese subjects. This case-control study of a cohort of 75 female Japanese AN sufferers and 127 normal female control subjects revealed no significant association between the 5-HT2A promoter polymorphism and AN. Thus, at least for Japanese subjects, the A-allele of the -1438G/A polymorphism in the promoter region of the 5-HT2A receptor gene does not contribute to a predisposition to AN.
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Affiliation(s)
- T Ando
- Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa, Chiba, Japan.
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Ando T, Ishikawa T, Kawamura N, Karibe M, Oba M, Tatsuta N, Hara S, Takii M, Naruo T, Takei M, Kurokawa N, Nozoe S, Kubo C, Komaki G. Analysis of tumor necrosis factor-alpha gene promoter polymorphisms in anorexia nervosa. Psychiatr Genet 2001; 11:161-4. [PMID: 11702059 DOI: 10.1097/00041444-200109000-00009] [Citation(s) in RCA: 15] [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: 10/27/2022]
Abstract
Elevated plasma tumor necrosis factor-alpha (TNFalpha) levels and enhanced spontaneous TNFalpha release from peripheral blood mononuclear cells in patients with anorexia nervosa (AN) have been reported. TNFalpha activates the hypothalamic-pituitary-adrenal axis and reduces food intake, which is characteristic of eating disorders. Recently, three novel polymorphisms in the 5'-flanking region of the TNFalpha gene were reported at positions -1031 (T --> C substitution), -863 (C --> A) and -857 (C --> T). Differences in these alleles are reportedly related to altered TNFalpha-transcriptional promoter activity. Therefore, we performed a case-control association analysis to determine whether any of those three polymorphisms in the TNFalpha promoter region were involved in a predisposition to AN. The results of our analysis of a cohort of 79 female Japanese AN sufferers and 127 normal female control subjects provide no support for the hypothesis that -1031T/C, -863 C/A and -857C/T polymorphisms in the TNFalpha gene promoter region influence the susceptibility to AN.
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Affiliation(s)
- T Ando
- Division of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Ichikawa, Chiba, Japan.
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Furuta S, Fukuda Y, Sugimoto T, Miyahara H, Kamada E, Sano H, Fukuta Y, Takei M, Kurimoto T. Pharmacodynamic analysis of steroid 5alpha-reductase inhibitory actions of Z-350 in rat prostate. Eur J Pharmacol 2001; 426:105-11. [PMID: 11525778 DOI: 10.1016/s0014-2999(01)01208-0] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The pharmacodynamics of (S)-4-[3-[4-[1-(4-methylphenyl)-3-[4-(2-methoxyphenyl)piperazine-1-yl]propoxy]benzoyl]indole-1-yl] butyric acid hydrochloride (Z-350), which has alpha(1)-adrenoceptor antagonistic and steroid 5alpha-reductase inhibitory effects, were investigated in rats. The disposition of Z-350 was a function of linear kinetics at doses from 1 to 30 mg/kg; the bioavailability was calculated to be 65.2%. The inhibition of 5alpha-reductase was dependent on the concentration of Z-350 in plasma and in the prostate. Analysis of the relationship between the concentration in the prostate and the inhibition seen after a single oral administration showed that the Hill constant was almost 1.0 and EC(50)(n(H)) was 47.4 ng/g of tissue; these parameters did not change after multiple administration. Z-350 inhibited 5alpha-reductase 1 h after oral administration at a dose of 3 mg/kg; maximum inhibition was observed after 2-4 h, and the inhibition (%) was maintained for 24 h after oral administration.
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Affiliation(s)
- S Furuta
- Central Research Laboratories, Zeria Pharmaceutical Co., Ltd., 2512-1 Oshikiri, Konan-machi, Osato-gun, Saitama 360-0111, Japan.
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Abstract
For sensitive analysis of the radioactive-metabolite in human PET, a radio-HPLC system coupled to a newly designed positron detector was constructed. The detector had the advantages of low noise level (1.7 +/- 1.0 cpm) and high sensitivity (32 +/- 1%) due to coincidence counting and large BGO crystals. Furthermore, the detector was easy to move, since a pair of the BGO housings coupled to photomultipliers was effectively arranged in parallel and a HPLC cell with different volume could be inserted between the BGO housing. This radio-HPLC system was useful for analyzing samples with low radioactivity. It was applied to the measurement of [11C]FLB457 in plasma, having high affinity and high selectivity with dopamine D2 receptors. Extremely low radioactivity of [11C]FLB457 (2500 dpm) could be analyzed by using the radio-HPLC system. The performance of this detector was compared with those of commercially available systems that had been used as sensitive detectors for HPLC.
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Affiliation(s)
- M Takei
- Division of Advanced Technology for Medical Imaging, National Institute of Radiological Sciences, Chiba, Japan
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