1
|
Okamura T, Morikawa S, Horiguchi T, Yamatsuta K, Watanabe T, Ikeda A, Maeda Y, Ina T, Takahashi H, Moriya R, Goto Y, Isogai S, Yamamoto N, Okachi S, Hashimoto N, Imaizumi K. Optical Biopsies Using Probe-Based Confocal Laser Endomicroscopy for Autoimmune Pulmonary Alveolar Proteinosis. Respiration 2024; 103:171-176. [PMID: 38387451 PMCID: PMC10997271 DOI: 10.1159/000535992] [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: 06/09/2023] [Accepted: 12/19/2023] [Indexed: 02/24/2024] Open
Abstract
INTRODUCTION Increasing numbers of cases of mild asymptomatic pulmonary alveolar proteinosis (PAP) are being reported with the recent increase in chest computed tomography (CT). Bronchoscopic diagnosis of mild PAP is challenging because of the patchy distribution of lesions, which makes it difficult to obtain sufficient biopsy samples. Additionally, the pathological findings of mild PAP, particularly those that differ from severe PAP, have not been fully elucidated. This study aimed to clarify the pathological findings of mild PAP and the usefulness of optical biopsy using probe-based confocal laser endomicroscopy (pCLE). METHODS We performed bronchoscopic optical biopsy using pCLE and tissue biopsy in 5 consecutive patients with PAP (three with mild PAP and two with severe PAP). We compared the pCLE images of mild PAP with those of severe PAP by integrating clinical findings, tissue pathology, and chest CT images. RESULTS pCLE images of PAP showed giant cells with strong fluorescence, amorphous substances, and thin alveolar walls. Images of affected lesions in mild PAP were equivalent to those obtained in arbitrary lung lesions in severe cases. All 3 patients with mild PAP spontaneously improved or remained stable after ≥3 years of follow-up. Serum autoantibodies to granulocyte-macrophage colony-stimulating factor were detected in all 5 cases. CONCLUSION Optical biopsy using pCLE can yield specific diagnostic findings, even in patients with mild PAP. pCLE images of affected areas in mild and severe PAP showed similar findings, indicating that the dysfunction level of pathogenic alveolar macrophages in affected areas is similar between both disease intensities.
Collapse
Affiliation(s)
- Takuya Okamura
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Sayako Morikawa
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Tomoya Horiguchi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kumiko Yamatsuta
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Toshikazu Watanabe
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Aki Ikeda
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yuri Maeda
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Takuma Ina
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Hideaki Takahashi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Ryoma Moriya
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yasuhiro Goto
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Sumito Isogai
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Naoki Yamamoto
- Center for Clinical Trial and Research Support, International Center for Cell and Gene Therapy, Research Promotion and Support Headquarters, Fujita Health University, Toyoake, Japan
| | - Shotaro Okachi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Naozumi Hashimoto
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| |
Collapse
|
2
|
Hayashi M, Morikawa S, Goto Y, Yoshida T, Kimura Y, Kawabe T, Tsuzuki S, Imaizumi K. Clinical characteristics and courses of 200 patients hospitalized for COVID-19 during the second and third waves at Fujita Health University Okazaki Medical Center in Japan. Fujita Med J 2023; 9:17-21. [PMID: 36789122 PMCID: PMC9923452 DOI: 10.20407/fmj.2021-018] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/21/2021] [Indexed: 02/16/2023]
Abstract
Objectives There are few reports about patients hospitalized for COVID-19 in Japan. We investigated 200 patients hospitalized for COVID-19 over a 6-month period with the aim of elucidating their clinical characteristics and clinical courses. Methods The study cohort comprised 200 patients hospitalized for COVID-19 during a 6-month period. We examined baseline characteristics, source of transmission, preadmission course, initial symptoms, concomitant symptoms, comorbidities, treatments, and prognosis. Results The number of inpatients from outside our region increased from 9 in the second wave to 53 in the third wave. The initial manifestations were cold-like and gastroenteritis-like symptoms, gustatory and olfactory dysfunction being frequently occurring concomitant symptoms. On admission 32 patients had mild disease, 108 moderate I, 54 moderate II, and 6 severe. We divided the 200 patients into second and third wave groups and compared their baseline characteristics. The third wave group was older and had more severe disease. The main treatments implemented were dexamethasone and remdesivir. Three patients (1.5%) required ventilation and 12 (6.0%) died in hospital. Conclusions We investigated 200 patients hospitalized for COVID-19 over a period of 6 months. The patients in the second wave were relatively young and most had mild disease. In contrast, the patients in the third wave were older and had more severe disease and higher in-hospital mortality.
Collapse
Affiliation(s)
- Masamichi Hayashi
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Sayako Morikawa
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Yusuke Goto
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Takazumi Yoshida
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine II, Fujita Health University, School of Medicine, Nagoya, Aichi, Japan
| | - Yutaro Kimura
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Taku Kawabe
- Department of General Practice, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan
| | - Seiichiro Tsuzuki
- Department of General Internal Medicine and Emergency, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| |
Collapse
|
3
|
Hayashi M, Morikawa S, Goto Y, Yoshida T, Kimura Y, Imaizumi K. Adverse reactions to mRNA coronavirus disease 2019 (COVID-19) vaccine for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 576 medical staff. Fujita Med J 2022; 8:79-82. [PMID: 35949514 PMCID: PMC9358674 DOI: 10.20407/fmj.2021-009] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 08/06/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Various measures have been taken to curb the COVID-19 epidemic, but their effect has been limited. Vaccines are expected to make a definite improvement. In Japan, vaccination began in February 2021. However, there are very few reports of adverse reactions to mRNA vaccines for the new coronavirus (SARS-CoV-2) in Japanese people. Therefore, adverse reactions in 576 vaccinated medical staff at the author's hospital were investigated. METHODS The subjects were 576 medical staff who wished to receive the new coronavirus (SARS-CoV-2) vaccine. The first vaccination was performed with Pfizer's new coronavirus mRNA vaccine (commercial name: Comirnaty intramuscular injection) from March 8 to March 15, 2021. The second vaccination was performed from March 29 to April 5, 2021, at an interval of more than 21 days from the first vaccination. RESULTS Adverse reactions were seen in six subjects in the first vaccination. There was dyspnea in one subject, arthralgia in one subject, fever/malaise in three subjects, and left axillary pain and lymphadenopathy in one subject. One subject had a reaction at the vaccination site that needed to be addressed. At the second vaccination, adverse reactions were observed in 64 subjects. There was fever in 58 subjects, malaise in 21 subjects, arthralgia in 12 subjects, aching pain in 11 subjects, headache in six subjects, chills in six subjects, nausea in three subjects, redness in two subjects, dizziness in two subjects, hives in two subjects, swelling in two subjects, cough in one subject, and itching in one subject (some had multiple adverse reactions). Fever was observed in the range of body temperature from 37.4 to 38.9 degrees. CONCLUSIONS Most of the adverse reactions to the COVID-19 vaccine were mild, and no serious anaphylaxis was observed. Vaccination was considered perfectly feasible if attention is paid to adverse reactions.
Collapse
Affiliation(s)
- Masamichi Hayashi
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Sayako Morikawa
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Yusuke Goto
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Takazumi Yoshida
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine II, Fujita Health University, School of Medicine, Nagoya, Aichi, Japan
| | - Yutaro Kimura
- Department of Internal Medicine, Division of Respiratory Medicine, Fujita Health University, School of Medicine, Okazaki, Aichi, Japan,Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine I, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| |
Collapse
|
4
|
Inoue N, Morikawa S. Role of serum n-6 polyunsaturated fatty acids in the development of acute coronary syndromes. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.182] [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]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background and Aims
n-3 polyunsaturated fatty acids (PUFAs) have an inhibitory effect against the development of coronary artery disease (CAD). However, whether n-6 PUFAs, dihomo-gamma-linolenic acid (DGLA), and arachidonic acid (AA) play a role in the development of CAD remains unclear. This study investigated the association between PUFAs and the risk of developing acute coronary syndrome (ACS) using the lipid and PUFAs data of patients who received percutaneous coronary intervention (PCI) for either non-emergent conditions (staged group) or ACS (ACS group).
Methods
We retrospectively evaluated 433 patients who underwent PCI between 2014 and 2021. The patients were divided into the ACS group (n = 18) and the staged group (n = 132). The lipid and PUFAs values of each patient between the two groups were compared. Moreover, to investigate the correlation between n-6 PUFAs levels and ACS, the effects of confounding factors such as use of strong statins and low-density cholesterol (LDL-C) levels were adjusted.
Results
The ACS group had higher n-6 PUFAs levels than the staged group (DGLA: 36.8 ug/mL vs. 29.6 ug/mL; AA: 203.3 ug/mL vs. 145.8 ug/mL). Furthermore, the analysis of covariance adjusted for LDL-C levels showed a significant difference between the two groups in terms of DGLA and AA levels.
Conclusions
The n-3 PUFAs levels did not significantly differ between the staged and ACS groups. Moreover, the ACS group had higher DGLA and AA levels and lower n-3 PUFAs/AA ratios than the staged group. Therefore, excess n-6 PUFAs may be a risk factor for ACS.
Collapse
Affiliation(s)
- N Inoue
- Chutoen Genral Medical Center, Shizuoka, Japan
| | - S Morikawa
- Chutoen Genral Medical Center, Shizuoka, Japan
| |
Collapse
|
5
|
Mieno Y, Hayashi M, Hirochi M, Ikeda A, Kako H, Ina T, Maeda Y, Maeda S, Inoue T, Souma T, Watanabe T, Horiguchi T, Gotoh Y, Niwa Y, Yamatsuta K, Morikawa S, Sakakibara Y, Okamura T, Uozu S, Goto Y, Isogai S, Fujita S, Fukumoto J, Hosoda N, Imaizumi K. Availability of Home sleep apnea test equipment LS-140 on a comparison with Polysomnography. Fujita Med J 2022; 8:17-24. [PMID: 35233343 PMCID: PMC8874914 DOI: 10.20407/fmj.2020-014] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 10/30/2020] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The prevalence of obstructive sleep apnea (OSA) in Japan is 9% among males and 3% among females. Up to 2.5 million patients are estimated to suffer from the disease, but limited number of facilities are capable of carrying out polysomnography (PSG), leaving more than 80% of these individuals are undiagnosed. In recent years, the development of new portable sleep monitoring (PMs) devices has been remarkable. We evaluate the correlation between the results of the LS-140 PMs device (Fukuda Denshi Tech Co. Ltd.), released in 2017, and those of PSG. METHODS We obtained contemporaneous data from the same patients by equipping 58 patients with PMs (LS-140) devices while they underwent PSG. Our primary outcome was Case 2 of the intraclass correlation coefficient (ICC), i.e., the ICC (2.1). And we used a Bland-Altman analysis to compare the apnea-hypopnea index (AHI) given by PSG and the respiratory event index (REI) given by LS-140 and examined the sensitivity and specificity of the REI relative to the AHI in the diagnosis of OSA. We also carried out the same comparison but in terms of the presence or absence of periodic limb movements (PLMs). RESULTS The ICC (2.1) between The REI and the AHI was 0.944, a rather high value (p<0.0001). The mean difference between AHI and REI values was -3.6 (p<0.0001), indicating a negative fixed bias. Sensitivity may decrease in groups with PLMs. CONCLUSION The REI and the AHI are highly correlated, giving LS-140 sufficient diagnostic sensitivity and specificity to screen for OSA.
Collapse
Affiliation(s)
- Yuki Mieno
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Masamichi Hayashi
- Fujita Health University Okazaki Medical Center, Okazaki, Aichi, Japan
| | - Mariko Hirochi
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Aki Ikeda
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Hisashi Kako
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Takuma Ina
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Yuri Maeda
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Shingo Maeda
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Takahiro Inoue
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Tomohide Souma
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Toshikazu Watanabe
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Tomoya Horiguchi
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Yusuke Gotoh
- Fujita Health University Okazaki Medical Center, Okazaki, Aichi, Japan
| | - Yoshikazu Niwa
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Kumiko Yamatsuta
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Sayako Morikawa
- Fujita Health University Okazaki Medical Center, Okazaki, Aichi, Japan
| | - Yosuke Sakakibara
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Takuya Okamura
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Sakurako Uozu
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Yasuhiro Goto
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Sumito Isogai
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| | - Shiho Fujita
- Fujita Health University Clinical Laboratory Center, Toyoake, Aichi, Japan
| | - Junichi Fukumoto
- Fujita Health University Clinical Laboratory Center, Toyoake, Aichi, Japan
| | - Nami Hosoda
- Fujita Health University Clinical Laboratory Center, Toyoake, Aichi, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine Ⅰ, Fujita Health University, School of Medicine, Toyoake, Aichi, Japan
| |
Collapse
|
6
|
Oya Y, Yoshida T, Asada K, Oguri T, Inui N, Morikawa S, Ito K, Kimura T, Kunii E, Matsui T, Kubo A, Kato T, Abe T, Tsuda T, Hida T. Clinical utility of liquid biopsy for EGFR driver, T790M mutation and EGFR amplification in plasma in patients with acquired resistance to afatinib. BMC Cancer 2021; 21:57. [PMID: 33435905 PMCID: PMC7802126 DOI: 10.1186/s12885-020-07777-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/28/2020] [Indexed: 12/25/2022] Open
Abstract
Background Cell-free DNA (cfDNA) genotyping in plasma using the cobas EGFR Mutation Test v2 (cobas) is the first liquid biopsy as a companion diagnosis to identify the EGFR T790M mutation (T790M) after the failure of treatment of EGFR-tyrosine kinase inhibitors (TKIs) (1st generation, gefitinib [G] and erlotinib [E] and 2nd generation, afatinib [A]). This study investigated the clinical utility of a liquid biopsy for patients who acquired resistance to afatinib. Methods We prospectively collected plasma from 51 patients who had acquired resistance to afatinib between April 2015 and November 2016 to evaluate the frequency of T790M by cobas and digital droplet PCR (UMIN000025112). Additionally, we retrospectively reviewed 38 patients who tested by cobas in plasma after G/E failure to compare for T790M detection between A and with G/E. Results The detection rate of EGFR-driver and T790M in plasma in patients treated with A (A group) as a first-line EGFR-TKI was lower than with G/E followed by A (G/E→A group), although the differences were not significant (EGFR-driver: 41% [A] vs. 67% [G/E→A], P=0.1867; and T790M: 8% [A] vs. 17% [G/E→A], P=0.5798). In first-line setting, the detection rate for EGFR-driver and T790M in plasma by cobas was lower in A group than in G/E group, although there was no significant difference (EGFR-driver: 34% [A] vs. 52% [G/E], P=0.2072; and T790M: 10% [A] vs. 27% [G/E], P=0.1161). Conclusion The detection of EGFR-driver and T790M in plasma by cobas in patients treated with afatinib might be lower than with G/E in a real-world setting. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-020-07777-2.
Collapse
Affiliation(s)
- Yuko Oya
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, 1-1 Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| | - Tatsuya Yoshida
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, 1-1 Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan. .,Current Address: Department of Thoracic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
| | - Kazuhiro Asada
- Department of Respiratory Medicine, Shizuoka General Hospital, Shizuoka, Japan
| | - Tetsuya Oguri
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University, Nagoya, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Sayako Morikawa
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kentaro Ito
- Respiratory Center, Matsusaka Municipal Hospital, Matsusaka, Japan
| | - Tomoki Kimura
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan
| | - Eiji Kunii
- Department of Respiratory Medicine, Nagoya City West Medical Center, Nagoya, Japan
| | - Takashi Matsui
- Department of Respiratory Medicine, Seirei Mikatahara General Hospital, Hamamatsu, Japan
| | - Akihito Kubo
- Division of Respiratory Medicine and Allergology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Tatsuo Kato
- Department of Respiratory Medicine, National Hospital Organization Nagara Medical Center, Gifu, Japan
| | - Takashi Abe
- Department of Respiratory Medicine, Ogaki Municipal Hospital, Ogaki, Japan
| | - Takeshi Tsuda
- Department of Respiratory Medicine, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Toyoaki Hida
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, 1-1 Kanokoden, Chikusa-ku, Nagoya, Aichi, 464-8681, Japan
| |
Collapse
|
7
|
Ito K, Murotani K, Kubo A, Kunii E, Taniguchi H, Shindoh J, Asada K, Imaizumi K, Takahashi K, Karayama M, Okuno M, Inui N, Hataji O, Morikawa S, Hayai S, Suda T, Abe T, Tsuda T, Yamagichi T, Kimura T, Oya Y, Yoshida T, Hida T. Propensity score analysis of overall survival between first- and second-generation EGFR-TKIs using real-world data. Cancer Sci 2020; 111:3705-3713. [PMID: 32639668 PMCID: PMC7541013 DOI: 10.1111/cas.14560] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 06/02/2020] [Accepted: 06/18/2020] [Indexed: 01/10/2023] Open
Abstract
We constructed a data set of EGFR‐mutant non–small‐cell lung carcinoma (NSCLC) patients, and compared the overall survival of first‐generation (1G), and second‐generation (2G) EGFR‐tyrosine kinase inhibitors (TKIs) in clinical practice using a propensity score. We reviewed the clinical data of consecutive EGFR‐mutated NSCLC patients who received EGFR‐TKI therapy between January 2008 and August 2017 at 11 institutions in Japan. The primary endpoint was overall survival (OS). When comparing OS between 1G and 2G EGFR‐TKIs, propensity score analyses were performed using 2 methods: matching and inverse probability of treatment weighting (IPTW). (Clinical Trial information: UMIN000030121) In total, 1400 patients from 11 institutions were enrolled in this study, and the data from the 1366 patients who received only EGFR‐TKI therapy were analyzed (gefitinib [GEF], N = 732; erlotinib [ERL], N = 416; afatinib, N = 218). Median OS times (months [95%CI]) were 29.7 [27.5‐33.5] in the 1G group (gefitinib, 32.0 [28.1‐35.8]; erlotinib, 27.5 [23.9‐31.7]), and 38.6 [32.2‐NR] in the 2G group (afatinib), respectively. The trend of longer OS for afatinib against 1G EGFR‐TKIs remained, even after adjusted by propensity score. (unadjusted, hazard ratio [HR] 0.676, P = .0023; adjusted by IPTW, HR 0.685 P < .0001; adjusted by matching, HR 0.725, P = .0418). Exploratory analysis showed that OS using the 2G EGFR‐TKI was superior to that of the 1G EGFR‐TKIs, suggesting the potential of sequential therapy of 2G EGFR‐TKI followed by osimertinib. (HR 0.419, P = .0519) Real‐world data analysis using 1354 data records, using propensity scoring, indicated that 2G EGFR‐TKI had a trend of longer OS compared with 1G EGFR‐TKIs.
Collapse
Affiliation(s)
- Kentaro Ito
- Respiratory Center, Matsusaka Municipal Hospital, Matsusaka city, Japan
| | - Kenta Murotani
- Biostatistics Center, Kurume University, Kurume city, Japan
| | - Akihito Kubo
- Division of Respiratory Medicine and Allergology, Aichi Medical University School of Medicine, Nagakute, Japan
| | - Eiji Kunii
- Department of Respiratory Medicine, Respiratory Tract Oncology Center, Nagoya City West Medical Center, Nagoya City, Japan
| | - Hirokazu Taniguchi
- Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama city, Japan
| | - Joe Shindoh
- Department of Respiratory Medicine, Ogaki Municipal Hospital, Ogaki, Japan
| | - Kazuhiro Asada
- Department of Respiratory Medicine, Shizuoka General Hospital, Shizuoka city, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Kosuke Takahashi
- Department of Respiratory Medicine, Aichi Cancer Center Aichi Hospital, Okazaki-shi, Japan.,Department of Respiratory Medicine, Anjo Kosei Hospital, Anjo-city, Japan
| | - Masato Karayama
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu city, Japan
| | - Motoyasu Okuno
- Department of Respiratory Medicine, Aichi Cancer Center Aichi Hospital, Okazaki-shi, Japan.,Department of Respiratory Medicine, Okazaki City Hospital, Okazaki-shi, Japan
| | - Naoki Inui
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, Hamamatsu city, Japan
| | - Osamu Hataji
- Respiratory Center, Matsusaka Municipal Hospital, Matsusaka city, Japan
| | - Sayako Morikawa
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Shunsaku Hayai
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto City, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu city, Japan
| | - Takashi Abe
- Department of Respiratory Medicine, Ogaki Municipal Hospital, Ogaki, Japan
| | - Takeshi Tsuda
- Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama city, Japan
| | - Teppei Yamagichi
- Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Japan.,Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Tomoki Kimura
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto City, Japan
| | - Yuko Oya
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Tatsuya Yoshida
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan.,Department of Thoracic Oncology, National Cancer Center Hospital, Chuo-ku, Japan
| | - Toyoaki Hida
- Department of Thoracic Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| |
Collapse
|
8
|
Kotoda M, Hishiyama S, Mitsui K, Tanikawa T, Morikawa S, Takamino A, Matsukawa T. Assessment of the potential for pathogen dispersal during high-flow nasal therapy. J Hosp Infect 2019; 104:534-537. [PMID: 31759093 PMCID: PMC7114853 DOI: 10.1016/j.jhin.2019.11.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 11/22/2022]
Abstract
High-flow nasal therapy is increasingly used in hospitals because of its effectiveness and patient comfort. However, pathogens in the patient's nasal and oral cavities may be dispersed by forced air. This study aimed to investigate the risk of pathogen dispersal during high-flow nasal therapy. Liquid and bacterial dispersal were assessed via in-vitro experimental set-ups using a manikin. Thickened water or fresh yeast solution mimicked saliva and nasal mucus secretions. Dispersal was limited to the proximal area of the face and nasal cannula, suggesting that high-flow nasal therapy does not increase the risk of droplet and contact infection.
Collapse
Affiliation(s)
- M Kotoda
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan; Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, USA.
| | - S Hishiyama
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - K Mitsui
- Surgical Center, University of Yamanashi Hospital, University of Yamanashi, Yamanashi, Japan
| | - T Tanikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - S Morikawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - A Takamino
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - T Matsukawa
- Department of Anesthesiology, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| |
Collapse
|
9
|
Yamaguchi T, Morikawa S, Yuko O, Asada K, Oguri T, Inui N, Ito K, Kimura T, Kunii E, Matsui T, Kubo A, Kato T, Shindo J, Tsuda T, Okuno M, Hida T, Imaizumi K. P083 Efficacy of EGFR-TKIs in Patients Harboring EGFR Mutations with Non-Adenocartinoma Histology. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.10.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
10
|
Souma T, Minezawa T, Okamura T, Horiguchi T, Morikawa S, Goto Y, Hayashi M, Isogai S, Kondo M, Imaizumi K. Risk factors for infectious complications after endobronchial ultrasound guided transbronchial biopsy. Lung Cancer 2018. [DOI: 10.1183/13993003.congress-2018.pa2778] [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: 11/05/2022]
|
11
|
Ouchi T, Morikawa S, Shibata S, Takahashi M, Yoshikawa M, Soma T, Miyashita H, Muraoka W, Kameyama K, Kawana H, Arima Y, Saya H, Okano H, Nakagawa T, Asoda S. Recurrent Spindle Cell Carcinoma Shows Features of Mesenchymal Stem Cells. J Dent Res 2018; 97:779-786. [PMID: 29494307 DOI: 10.1177/0022034518759278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated a case of spindle cell carcinoma (SpCC) in tongue pathological lesions. The patient experienced a local recurrence and distant metastasis after surgical intervention. Although standard chemotherapy was administered, a granulomatous mass continued to develop. This aggressive growth led to survival of the tumor. Secondary debulking surgery was performed to improve the patient's quality of life at the request of the patient. Using a tissue sample derived from the secondary debulking surgery, we performed an analysis of the tumor's cell surface antigens, differentiation potential, metastatic ability, and inhibition potential by anticancer reagents. In vitro analysis revealed that the cell population grown under adherent culture conditions expressed the mesenchymal stem cell (MSC) markers CD73, CD90, and CD105. The cell line established from this SpCC contained colony-forming unit fibroblasts (CFU-Fs) and exhibited multipotent differentiation into several mesenchymal lineages, including bone, cartilage, and fat. The SpCC cells also displayed vigorous mobilization. These characteristics suggested that they had the differentiation potential of mesenchymal cells, especially MSCs, rather than that of epithelial cells. The surgical specimen analyzed in this study resisted the molecular target reagent cetuximab, which is an epidermal growth factor receptor inhibitor. This clinical insight revealed that chemotherapy-resistant SpCC cells have different characteristics compared to most other cancer cells, which are sensitive to cetuximab. Our cell death assay revealed that SpCC cell death was induced by the anticancer drug imatinib, which is known to inhibit protein tyrosine kinase activity of ABL, platelet-derived growth factor receptor α (PDGFRα), and KIT. Here, we report recurrent SpCC with characteristics of MSCs and potential for treatment with imatinib.
Collapse
Affiliation(s)
- T Ouchi
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - S Morikawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - S Shibata
- 2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - M Takahashi
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - M Yoshikawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - T Soma
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Miyashita
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - W Muraoka
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Kameyama
- 4 Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
| | - H Kawana
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Arima
- 3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - H Saya
- 3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - H Okano
- 2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - S Asoda
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| |
Collapse
|
12
|
Yamaguchi T, Oya Y, Kagawa Y, Furuta H, Watanabe N, Shimizu J, Horio Y, Uemura T, Morikawa S, Imaizumi K, Hida T. P2.07-028 Efficacy and Safety of Nivolumab in Non-Small Cell Lung Cancer Patients Who Relapse after Thoracic Radiotherapy. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.087] [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: 11/25/2022]
|
13
|
Isogai S, Niwa Y, Yatsuya H, Hayashi M, Yamamoto N, Okamura T, Minezawa T, Goto Y, Yamaguchi T, Takeyama T, Sakakibara Y, Morikawa S, Horiguchi T, Gotoh Y, Mieno Y, Uozu S, Nakanishi T, Okazawa M, Sakakibara H, Imaizumi K. Increased airway hyperresponsiveness to adenosine in patients with aspirin intolerant asthma. Allergol Int 2017; 66:360-362. [PMID: 27816384 DOI: 10.1016/j.alit.2016.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/16/2016] [Accepted: 09/26/2016] [Indexed: 11/15/2022] Open
Affiliation(s)
- Sumito Isogai
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan.
| | - Yoshikazu Niwa
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Hiroshi Yatsuya
- Department of Public Health, Fujita Health University, Aichi, Japan
| | - Masamichi Hayashi
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Naoki Yamamoto
- Laboratory of Molecular Biology & Histochemistry, Fujita Health University, Aichi, Japan
| | - Takuya Okamura
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Tomoyuki Minezawa
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Yasuhiro Goto
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Teppei Yamaguchi
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Tomoko Takeyama
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Yosuke Sakakibara
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Sayako Morikawa
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Tomoya Horiguchi
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Yusuke Gotoh
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Yuki Mieno
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Sakurako Uozu
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Toru Nakanishi
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| | - Mitsushi Okazawa
- Department of Respiratory Medicine, Daiyukai General Hospital, Aichi, Japan
| | | | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine, Fujita Health University, Aichi, Japan
| |
Collapse
|
14
|
Kawata M, Morikawa S, Shiosaka S, Tamura H. Ablation of neuropsin-neuregulin 1 signaling imbalances ErbB4 inhibitory networks and disrupts hippocampal gamma oscillation. Transl Psychiatry 2017; 7:e1052. [PMID: 28267150 PMCID: PMC5416666 DOI: 10.1038/tp.2017.20] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/19/2017] [Accepted: 01/25/2017] [Indexed: 12/11/2022] Open
Abstract
Parvalbumin-expressing interneurons are pivotal for the processing of information in healthy brain, whereas the coordination of these functions is seriously disrupted in diseased brain. How these interneurons in the hippocampus participate in pathological functions remains unclear. We previously reported that neuregulin 1 (NRG1)-ErbB4 signaling, which is actuated by neuropsin, is important for coordinating brain plasticity. Neuropsin cleaves mature NRG1 (bound to extracellular glycosaminoglycans) in response to long-term potentiation or depression, liberating a soluble ligand that activates its receptor, ErbB4. Here, we show in mice that kainate-induced status epilepticus transiently elevates the proteolytic activity of neuropsin and stimulates cFos expression with a time course suggesting that activation of ErbB4- and parvalbumin-expressing interneurons follows the excitation and subsequent silencing of pyramidal neurons. In neuropsin-deficient mice, kainate administration impaired signaling and disrupted the neuronal excitation-inhibition balance (E/I balance) in hippocampal networks, by decreasing the activity of parvalbumin-positive interneurons while increasing that of pyramidal neurons, resulting in the progression of status epilepticus. Slow, but not fast, gamma oscillations in neuropsin-deficient mice showed reduced power. Intracerebroventricular infusion of the soluble NRG1 ligand moiety restored the E/I balance, status epilepticus and gamma oscillations to normal levels. These results suggest that the neuropsin-NRG1 signaling system has a role in pathological processes underlying temporal lobe epilepsy by regulating the activity of parvalbumin-expressing interneurons, and that neuropsin regulates E/I balance and gamma oscillations through NRG1-ErbB4 signaling toward parvalbumin-expressing interneurons. This neuronal system may be a useful target of pharmacological therapies against cognitive disorders.
Collapse
Affiliation(s)
- M Kawata
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan,Department of Pharmacology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
| | - S Morikawa
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan,Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
| | - S Shiosaka
- Laboratory of Functional Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology (NAIST), Nara, Japan
| | - H Tamura
- Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan,Life Science Tokyo Advanced Research Center (L-StaR), Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan. E-mail:
| |
Collapse
|
15
|
Morikawa S, Okamura T, Minezawa T, Goto Y, Hayashi M, Yamaguchi T, Isogai S, Mieno Y, Yamamoto N, Uozu S, Nakanishi T, Okazawa M, Imaizumi K. A simple method of bronchial occlusion with silicone spigots (Endobronchial Watanabe Spigot; EWS®) using a curette. Ther Adv Respir Dis 2016; 10:518-524. [PMID: 27595645 PMCID: PMC5933595 DOI: 10.1177/1753465816664862] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background: Bronchial occlusion with an Endobronchial Watanabe Spigot (EWS) has been
shown to be useful in managing prolonged bronchopleural fistulas and
intractable hemoptysis. EWS bronchial occlusion using a curette is less
technically demanding. This retrospective study evaluated the clinical
utility and simplicity of this method. Methods: A total of 18 consecutive patients (15 men, 3 women, aged 47–85 years) who
underwent bronchial occlusion using an EWS from April 2012 to August 2014
were evaluated. The method involves sticking the tip of a curette into an
EWS to the first joint, allowing it to be turned in any direction or at any
angle. The time required to occlude the target bronchus was measured on
routinely recorded digital videos. Other parameters evaluated included
success rates, complications, and clinical outcomes. Results: Of the 18 patients, 11 underwent bronchial occlusion for intractable
pneumothorax, 5 for postoperative bronchopleural fistula, two for
intractable empyema, and one for hemoptysis. Each patient required 1–7 EWSs
(median 4). Target bronchi included the right upper (n =
8), left upper (n = 5), right lower (n =
2), left lower (n = 2), and right middle
(n = 1) bronchi. The success rate of EWS insertion into
the target bronchus was 100%. Time per EWS occlusion ranged from 65–528 sec
(median 158.5 sec). Of the 62 insertions, 36 (58.1%) were completed within 3
min, and 58 (93.5%) within 5 min. Successful outcomes were observed in 15
(83.3%) of the 18 patients. Conclusions: EWS bronchial occlusion using a curette is a simple method for managing
intractable bronchopleural fistulas in daily clinical settings.
Collapse
Affiliation(s)
- Sayako Morikawa
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Takuya Okamura
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Tomoyuki Minezawa
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Yasuhiro Goto
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Masamichi Hayashi
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Teppei Yamaguchi
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Sumito Isogai
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Yuki Mieno
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Naoki Yamamoto
- Laboratory of Molecular Biology and Histochemistry, Fujita Health University, Toyoake, Aichi, Japan
| | - Sakurako Uozu
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Toru Nakanishi
- Department of Respiratory Medicine, Fujita Health University, Toyoake, Aichi, Japan
| | - Mitsushi Okazawa
- Department of Respiratory Medicine and Clinical Allergy, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Kazuyoshi Imaizumi
- Department of Respiratory Medicine, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| |
Collapse
|
16
|
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) can cause an aggressive malignancy known as adult T-cell leukemia/lymphoma (ATLL). The Tax protein encoded by the pX region of the HTLV-1 genome appears to be a key element in the early stage of ATLL development. In this study, we examined the expression of the downstream of tyrosine kinase (DOK) family members DOK1, DOK2 and DOK3, recently reported to be tumor suppressors, in HTLV-1-transformed T cells (MT-2 and HUT-102) and TL-Om1 cells derived from ATLL leukemic cells. DOK2 and DOK3 expression was significantly reduced in MT-2, HUT-102, and TL-Om1 cells compared with their expression in uninfected T cells, and the expression of DOK3 was reduced by the induction of Tax expression in T cells.
Collapse
|
17
|
Yasui T, Mabuchi Y, Toriumi H, Ebine T, Niibe K, Houlihan DD, Morikawa S, Onizawa K, Kawana H, Akazawa C, Suzuki N, Nakagawa T, Okano H, Matsuzaki Y. Purified Human Dental Pulp Stem Cells Promote Osteogenic Regeneration. J Dent Res 2015; 95:206-14. [PMID: 26494655 DOI: 10.1177/0022034515610748] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Human dental pulp stem/progenitor cells (hDPSCs) are attractive candidates for regenerative therapy because they can be easily expanded to generate colony-forming unit-fibroblasts (CFU-Fs) on plastic and the large cell numbers required for transplantation. However, isolation based on adherence to plastic inevitably changes the surface marker expression and biological properties of the cells. Consequently, little is currently known about the original phenotypes of tissue precursor cells that give rise to plastic-adherent CFU-Fs. To better understand the in vivo functions and translational therapeutic potential of hDPSCs and other stem cells, selective cell markers must be identified in the progenitor cells. Here, we identified a dental pulp tissue-specific cell population based on the expression profiles of 2 cell-surface markers LNGFR (CD271) and THY-1 (CD90). Prospectively isolated, dental pulp-derived LNGFR(Low+)THY-1(High+) cells represent a highly enriched population of clonogenic cells--notably, the isolated cells exhibited long-term proliferation and multilineage differentiation potential in vitro. The cells also expressed known mesenchymal cell markers and promoted new bone formation to heal critical-size calvarial defects in vivo. These findings suggest that LNGFR(Low+)THY-1(High+) dental pulp-derived cells provide an excellent source of material for bone regenerative strategies.
Collapse
Affiliation(s)
- T Yasui
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan Department of Dentistry and Oral Surgery, Kawasaki Municipal Kawasaki Hospital, Kanagawa, Japan
| | - Y Mabuchi
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Toriumi
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Ebine
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - K Niibe
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan Division of Molecular and Regenerative Prosthodontics, Graduate School of Dentistry, Tohoku University, Miyagi, Japan
| | - D D Houlihan
- Centre for Liver Research, NIHR Biomedical Research Unit, University of Birmingham, Birmingham, UK
| | - S Morikawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Onizawa
- Department of Dentistry and Oral Surgery, Kawasaki Municipal Kawasaki Hospital, Kanagawa, Japan
| | - H Kawana
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - C Akazawa
- Department of Biochemistry and Biophysics, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - N Suzuki
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Y Matsuzaki
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan Department of Cancer Biology, Faculty of Medicine, Shimane University, Shimane, Japan
| |
Collapse
|
18
|
Minezawa T, Okamura T, Yatsuya H, Yamamoto N, Morikawa S, Yamaguchi T, Morishita M, Niwa Y, Takeyama T, Mieno Y, Hoshino T, Uozu S, Goto Y, Hayashi M, Isogai S, Matsuo M, Nakanishi T, Hashimoto N, Okazawa M, Imaizumi K. Bronchus sign on thin-section computed tomography is a powerful predictive factor for successful transbronchial biopsy using endobronchial ultrasound with a guide sheath for small peripheral lung lesions: a retrospective observational study. BMC Med Imaging 2015; 15:21. [PMID: 26092497 PMCID: PMC4475307 DOI: 10.1186/s12880-015-0060-5] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 05/19/2015] [Indexed: 11/10/2022] Open
Abstract
Background Recent advances in bronchoscopy, such as transbronchial biopsy (TBB) using endobronchial ultrasonography with a guide sheath (EBUS-GS), have improved the diagnostic yield of small-sized peripheral lung lesions. In some cases, however, it is difficult to obtain adequate biopsy samples for pathological diagnosis. Adequate prediction of the diagnostic accuracy of TBB with EBUS-GS is important before deciding whether bronchoscopy should be performed. Methods We retrospectively reviewed 149 consecutive patients who underwent TBB with EBUS-GS for small-sized peripheral lung lesions (≤30 mm in diameter) from April 2012 to March 2013. We conducted an exploratory analysis to identify clinical factors that can predict an accurate diagnosis by TBB with EBUS-GS. All patients underwent thin-section chest computed tomography (CT) scans (0.5-mm slices), and the CT bronchus sign was evaluated before bronchoscopy in a group discussion. The final diagnoses were pathologically or clinically confirmed in all studied patients (malignant lesions, 110 patients; benign lesions, 39 patients). Results The total diagnostic yield in this study was 72.5 % (95 % confidence interval: 64.8–79.0 %). Lesion size, lesion visibility on chest X-ray, and classification of the CT bronchus sign were factors significantly associated with the definitive biopsy result in the univariate analysis. In the multivariate analysis, only the CT bronchus sign remained as a significant predictive factor for successful bronchoscopic diagnosis. The CT bronchus sign was also significantly associated with the EBUS findings of the lesions. Conclusion Our results suggest that the CT bronchus sign is a powerful predictive factor for successful TBB with EBUS-GS.
Collapse
Affiliation(s)
- Tomoyuki Minezawa
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Takuya Okamura
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Hiroshi Yatsuya
- Department of Public Health, Fujita Health University, Toyoake, Aichi, Japan.
| | - Naoki Yamamoto
- Laboratory of Molecular Biology & Histochemistry, Fujita Health University, Toyoake, Aichi, Japan.
| | - Sayako Morikawa
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Teppei Yamaguchi
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Mariko Morishita
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Yoshikazu Niwa
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Tomoko Takeyama
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Yuki Mieno
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Tami Hoshino
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Sakurako Uozu
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Yasuhiro Goto
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Masamichi Hayashi
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Sumito Isogai
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Masaki Matsuo
- Department of Respiratory Medicine, Chubu Rosai Hospital, Nagoya, Japan.
| | - Toru Nakanishi
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Naozumi Hashimoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Mitsushi Okazawa
- Department of Respiratory Medicine, Daiyu-kai Hospital, Ichinomiya, Aichi, Japan.
| | - Kazuyoshi Imaizumi
- Division of Respiratory Medicine and Clinical Allergy, Department of Internal Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| |
Collapse
|
19
|
Kimura I, Miyake T, Kubota S, Kamata A, Morikawa S. Adenomatous polyps in the stomachs of hatchery-grown salmonids and other types of fishes. Prog Exp Tumor Res 2015; 20:181-94. [PMID: 185653 DOI: 10.1159/000398697] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
20
|
Yamaguchi T, Nakanishi T, Hayashi M, Uozu S, Okamura T, Morishita M, Takeyama T, Minezawa T, Morikawa S, Niwa Y, Mieno Y, Kato A, Hoshino T, Isogai S, Okazawa M, Imaizumi K. [Efficacy and safety of cisplatin plus pemetrexed as a first-line treatment for Japanese patients with advanced non-squamous non-small-cell lung cancer -- a retrospective analysis]. Gan To Kagaku Ryoho 2015; 42:183-187. [PMID: 25743136] [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: 06/04/2023]
Abstract
BACKGROUND Cisplatin plus pemetrexed is considered the standard of care for the first-line treatment of patients with advanced non-squamous non-small-cell lung cancer (NSCLC). However, little is known about the efficacy and safety of this regimen in Japanese patients in a daily clinical setting. METHODS We retrospectively analyzed 40 patients who received cisplatin (75 mg/m/(2)) and pemetrexed (500 mg/m(2)) as a first-line treatment for advanced non-squamous NSCLC. RESULTS Recorded Grade 3 or 4 hematological toxicities included neutropenia in 7 cases (17.5%), leukopenia in 5 cases (12.5%), anemia in 1 case (2.5%), thrombocytopenia in 1 case (2.5%), and febrile neutropenia in 1 case (2.5%). Grade 3 or 4 nonhematological toxicities included anorexia in 3 cases (7.5%), infection in 1 case (2.5%), rash in 1 case (2.5%), and increased transaminase expression in 1 case (2.5%). Therefore, the adverse events were mostly mild. There were no treatment related deaths. The overall response rate was 37.5%, median progression free survival was 5.6 months, and median overall survival (OS) was 18.8 months. In an epidermal growth factor receptor (EGFR) mutation status subgroup analysis, the median OS of patients with wild-type EGFR or unknown status (n=28)was 16.8 months. CONCLUSION Cisplatin plus pemetrexed was well tolerated as a first-line treatment and effective in Japanese patients with advanced non-squamous NSCLC.
Collapse
Affiliation(s)
- Teppei Yamaguchi
- Division of Respiratory Medicine and Clinical Allergy, Dept. of Internal Medicine, Fujita Health University
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Yamaguchi T, Imaizumi K, Morikawa S, Minezawa T, Okamura T, Morishita M, Uozu S, Hayashi M, Nakanishi T, Okazawa M. Hydration in Four Hours Around the Cisplatin Infusion May Be Critical for Preventing Cisplatin-Induced Nephrotoxicity. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.70] [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: 11/14/2022] Open
|
22
|
Saito Y, Okayama H, Masaki K, Ninomiya S, Endo Y, Morikawa S. Positional changes of pelvic organs from 2 months to 1 year after the delivery: evaluation with an open configuration MR system. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.736] [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: 11/16/2022]
|
23
|
Ninomiya S, Masaki K, Saito Y, Morikawa S, Endo Y, Okayama H. Voluntary contraction of the pelvic floor muscles measured by magnetic resonance images in a sitting posture and factors responsible for pelvic relaxation. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
24
|
Yanagisawa D, Amatsubo T, Morikawa S, Taguchi H, Urushitani M, Shirai N, Hirao K, Shiino A, Inubushi T, Tooyama I. In vivo detection of amyloid β deposition using 19F magnetic resonance imaging with a 19F-containing curcumin derivative in a mouse model of Alzheimer's disease. Neuroscience 2011; 184:120-7. [DOI: 10.1016/j.neuroscience.2011.03.071] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 03/01/2011] [Accepted: 03/29/2011] [Indexed: 10/18/2022]
|
25
|
Tanuma T, Okamoto H, Ohnishi K, Morikawa S, Suzuki T. Partially Fluorinated Metal Oxide Catalysts for a Friedel–Crafts-type Reaction of Dichlorofluoromethane with Tetrafluoroethylene. Catal Letters 2009. [DOI: 10.1007/s10562-009-0197-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
26
|
Saijo M, Ami Y, Suzaki Y, Nagata N, Hasegawa H, Ogata M, Fukushi S, Mizutani T, Iizuka I, Kurane I, Kurata T, Morikawa S. Post-Exposure Vaccination with a Highly Attenuated Vaccinia Vaccine, LC16m8, for Protection of Nonhuman Primates from Monkeypox. Int J Infect Dis 2008. [DOI: 10.1016/j.ijid.2008.05.022] [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: 10/21/2022] Open
|
27
|
Matsuura Y, Tatsumi M, Enami K, Morikawa S, Yamazaki S, Kohase M. Expression of IL-6/IFN-beta 2 in a baculovirus system and its biological function. Ann N Y Acad Sci 2008; 557:122-8; discussion 129. [PMID: 2660693 DOI: 10.1111/j.1749-6632.1989.tb24005.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Y Matsuura
- National Institute of Health, Gakuen Musashimurayama-shi, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
28
|
Watanabe Y, Kashiwagi N, Yamada N, Higashi M, Fukuda T, Morikawa S, Onishi Y, Iihara K, Miyamoto S, Naito H. Subtraction 3D CT angiography with the orbital synchronized helical scan technique for the evaluation of postoperative cerebral aneurysms treated with cobalt-alloy clips. AJNR Am J Neuroradiol 2008; 29:1071-5. [PMID: 18372416 DOI: 10.3174/ajnr.a1040] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [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: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE CT angiography (CTA) has been used for the evaluation of intracranial aneurysms and recently has been applied to assess postoperative aneurysms treated with titanium-alloy clips. We investigated the clinical usefulness of subtraction CTA by using the orbital synchronized helical scan technique (OSHST) for evaluating intracranial aneurysms surgically treated with cobalt-alloy clips. MATERIALS AND METHODS We scanned an agar gel phantom with a cobalt-alloy clip mounted in the center by using subtraction CT with and without OSHST. Eighteen patients (20 aneurysms) who underwent surgery with cobalt-alloy clips were postoperatively evaluated with subtraction CTA with OSHST, and the results were compared with those from digital subtraction angiography. Two neuroradiologists independently evaluated the 3D CTA images and source images with and without subtraction for the presence of residual flow in the aneurysm and stenotic change in parent or neighboring arteries. RESULTS For the phantom study, significantly fewer artifacts from clips were noted on images obtained by using subtraction CT with OSHST than on those obtained without OSHST. For the clinical study, subtraction CTA with OSHST also showed fewer clip artifacts than did conventional CTA. Image quality was poor, and we were unable to diagnose residual neck for 5% (1/20) with subtraction CTA with OSHST and 75% (15/20) with conventional CTA. For evaluation of adjacent vessels, image quality was poor for none (0/20) with subtraction CTA with OSHST and for 55% (11/20) with conventional CTA. For subtraction CTA with OSHST, sensitivity in detecting residual neck was 1.0, and specificity was 0.94. For conventional CTA, sensitivity and specificity were both 0.25. CONCLUSIONS OSHST is a useful technique for subtracting cobalt-alloy clips, and subtraction CTA with OSHST is available for evaluating aneurysms after clipping with cobalt-alloy clips.
Collapse
Affiliation(s)
- Y Watanabe
- Department of Radiology, National Cardiovascular Center, Osaka, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Saijo M, Suzutani T, Mizuta K, Kurane I, Morikawa S. Characterization and susceptibility to antiviral agents of herpes simplex virus type 1 containing a unique thymidine kinase gene with an amber codon between the first and the second initiation codons. Arch Virol 2007; 153:303-14. [DOI: 10.1007/s00705-007-1096-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Accepted: 10/29/2007] [Indexed: 11/29/2022]
|
30
|
Abe H, Shimizu T, Naka S, Shiomi H, Demura K, Murakami K, Kurumi Y, Morikawa S, Tani T. Open-configuration magnetic resonance (MR) guided microwave thermocoagulation treatment for breast tumors: Preliminary report of hepatic metastases and resected breast tumors. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.11095] [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] [Indexed: 11/20/2022] Open
Abstract
11095 Background: Minimally invasive therapies such as radiofrequency ablation, focused ultrasound surgery, and cryotherapy for early stage primary breast cancers may be appropriate in carefully selected patients. In this study, open-configuration magnetic resonance (MR)-guided microwave thermocoagulation treatment was used for breast tumors, and the efficacy of this treatment was assessed. Methods: We used MR-guided microwave thermocoagulation treatment on eight patients with metastatic liver tumors from breast cancer. A 0.5 T open-configuration MR system and a microwave coagulator were used. Near-real-time MR images and real-time temperature images were collected and displayed on the monitor. Secondly, it was examined whether the description of breast tumors was possible with open- configuration MR device, and simulated a tumor puncture while imaging a real-time MR image. The resected breast tumor was punctured while confirming the tumor with open-configuration MR system, and microwave thermocoagulation was enforced. Tumor tissue viability after microwave thermocoagulation was assessed by hematoxylin and eosin and NADH vital staining. Results: The visibility of the tumor by MR imaging was not disturbed throughout the procedure. In 8 patients, 11 hepatic metastases were treated by MR-guided microwave thermocoagulation treatment successfully without any major adverse event. Five of the 8 patients are alive with new metastatic foci with a mean observation period of 25.9 months (range 1 - 43 months). It was able to be confirmed that viability of the tumor had disappeared by the microwave thermocoagulation in resected breast tumors. Conclusions: This technique is feasible and safe to treatment of breast tumor with real-time observation. Open-configuration MR-guided microwave thermocoagulation therapy appears to be a feasible method with advantages to add to the growing list for nonsurgical ablation therapy of early stage primary breast cancer and should be investigated in further comparative studies. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- H. Abe
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - T. Shimizu
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - S. Naka
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - H. Shiomi
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - K. Demura
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - K. Murakami
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Y. Kurumi
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - S. Morikawa
- Shiga University of Medical Science, Otsu, Shiga, Japan
| | - T. Tani
- Shiga University of Medical Science, Otsu, Shiga, Japan
| |
Collapse
|
31
|
Sakai K, Mizutani T, Fukushi S, Saijo M, Endoh D, Kurane I, Takehara K, Morikawa S. An improved procedure for rapid determination of viral RNA sequences of avian RNA viruses. Arch Virol 2007; 152:1763-5. [PMID: 17541697 DOI: 10.1007/s00705-007-0999-9] [Citation(s) in RCA: 16] [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] [Received: 03/19/2007] [Accepted: 04/27/2007] [Indexed: 11/30/2022]
Abstract
A system for rapid determination of viral RNA sequences, RDV, was improved for detection of avian RNA virus in allantoic fluids. We detected avian paramyxovirus nucleotide sequences using RDV method ver 2.0.
Collapse
Affiliation(s)
- K Sakai
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Mizutani T, Fukushi S, Kenri T, Sasaki Y, Ishii K, Endoh D, Zamoto A, Saijo M, Kurane I, Morikawa S. Enhancement of cytotoxicity against Vero E6 cells persistently infected with SARS-CoV by Mycoplasma fermentans. Arch Virol 2007; 152:1019-25. [PMID: 17277901 PMCID: PMC7087332 DOI: 10.1007/s00705-006-0924-7] [Citation(s) in RCA: 3] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Accepted: 12/13/2006] [Indexed: 11/29/2022]
Abstract
We previously reported that cells with persistent severe acute respiratory syndrome coronavirus (SARS-CoV) infection were established after apoptotic events. In the present study, we investigated the cytopathic effects of dual infection with SARS-CoV and Mycoplasma fermentans on Vero E6 cells. Dual infection completely killed cells and prevented the establishment of persistent SARS-CoV infection. M. fermentans induced inhibition of cell proliferation, but the cells remained alive. Apoptosis was induced easily in M. fermentans-infected cells, indicating that they were primed for apoptosis. These results indicated that M. fermentans enhances apoptosis in surviving cells that have escaped from SARS-CoV-induced apoptosis.
Collapse
Affiliation(s)
- T Mizutani
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Song Y, Morikawa S, Morita M, Inubushi T, Takada T, Torii R, Kitamura Y, Taniguchi T, Tooyama I. Comparison of MR images and histochemical localization of intra-arterially administered microglia surrounding beta-amyloid deposits in the rat brain. Histol Histopathol 2006; 21:705-11. [PMID: 16598669 DOI: 10.14670/hh-21.705] [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: 11/30/2022]
Abstract
The therapeutic use of microglial cells has recently received some attention for the treatment of Alzheimer disease (AD), but few non-invasive techniques exist for monitoring the cells after administration. Here we present a magnetic resonance imaging (MRI) technique for tracking microglia injected intra-arterially in vivo. We micro-injected Abeta42 into the left hippocampus and saline into the right hippocampus of rats. We then administered microglia, which were labeled with enhanced green fluorescent protein (EGFP) gene and Resovist, into the carotid artery. After monitoring exogenously administered microglia using MRI, we compared the MR images and the histochemical localization of administered microglia. MRI revealed clear signal changes attributable to Resovist-containing microglia in Abeta-injected areas. Histochemistry demonstrated that EGFP-positive microglia accumulated around Abeta deposits and internalized the peptide. This study demonstrates the usefulness of MRI for non-invasive monitoring of exogenous microglia, and suggests a promising future for microglia/macrophages as therapeutic tools for AD.
Collapse
Affiliation(s)
- Y Song
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Maeda H, Kubo K, Sugita Y, Miyamoto Y, Komatsu S, Takeuchi S, Umebayashi T, Morikawa S, Kawanishi K, Kameyama Y. DNA vaccine against hamster oral papillomavirus-associated oral cancer. J Int Med Res 2006; 33:647-53. [PMID: 16372582 DOI: 10.1177/147323000503300606] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Previously we developed a carcinogenesis model involving the combination of 9,10-dimethyl-1,2-benzanthracene (DMBA) application with physical wounding of hamster lingual mucosa. The presence of a novel hamster oral papillomavirus (HOPV) was demonstrated and its genome sequenced. In the present study, this HOPV hamster model was used to test whether vaccination with the L1 gene could prevent the development of oral carcinoma. DNA plasmids encoding the L1 gene or the vector alone were injected intramuscularly into 20 vaccinated and 20 control hamsters, respectively. The lingual tips of the hamsters were painted with DMBA for 8 weeks. A portion of the lingual tips was excised, and the tips were then painted daily with DMBA until the animals were killed 13 days later. All control hamsters developed lingual carcinoma, whereas 12 of the L1-vaccinated hamsters showed no lesions. These results suggest that immunization with L1 DNA vaccines may prevent the development of papillomavirus-associated oral cancer.
Collapse
Affiliation(s)
- H Maeda
- Department of Pathology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Niikura M, Maeda A, Ikegami T, Saijo M, Kurane I, Morikawa S. Modification of endothelial cell functions by Hantaan virus infection: prolonged hyper-permeability induced by TNF-alpha of hantaan virus-infected endothelial cell monolayers. Arch Virol 2004; 149:1279-92. [PMID: 15221531 DOI: 10.1007/s00705-004-0306-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2003] [Accepted: 01/28/2004] [Indexed: 10/26/2022]
Abstract
Serious vascular leakage is central to the pathogenesis of hantavirus infections. However, there is no evidence suggesting the hantavirus infection of endothelial cells directly causes obvious cell damage or morphological alteration either in vivo or in vitro. In this study, we examined whether Hantaan virus (HTNV) infection modifies the barrier function of endothelial cell monolayers upon the exposure to pro-inflammatory cytokines. Low levels (1 ng/ml) of tumor necrosis factor-alpha initially increased the permeability in both HTNV-infected and uninfected monolayers similarly. Thereafter, however, these monolayers showed significant difference. The HTNV-infected monolayers remained irreversibly hyper-permeable during the experimental period up to 4 days, while the uninfected monolayers completely recovered the barrier function. The prolonged hyper-permeability of HTNV-infected monolayers was not associated with cell death or gap formation in the monolayers, and was independent from their nitric oxide or prostaglandin production. These results are the first evidence that hantavirus infection modifies barrier function of endothelial cell monolayers and suggest that HTNV-infection of endothelial cells may contribute to the increased vascular leakage through the prolonged response to cytokines.
Collapse
Affiliation(s)
- M Niikura
- Department of Virology 1, National Institute of Infectious Diseases, Musashimurayama, Japan
| | | | | | | | | | | |
Collapse
|
36
|
Iwasaki T, Inoue S, Tanaka K, Sato Y, Morikawa S, Hayasaka D, Moriyama M, Ono T, Kanai S, Yamada A, Kurata T. Characterization of Oita virus 296/1972 of Rhabdoviridae isolated from a horseshoe bat bearing characteristics of both lyssavirus and vesiculovirus. Arch Virol 2004; 149:1139-54. [PMID: 15168201 DOI: 10.1007/s00705-003-0271-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2003] [Accepted: 11/14/2003] [Indexed: 11/26/2022]
Abstract
Oita virus 296/1972 was isolated from the blood of a wild horseshoe bat, Rhinolophus cornutus (Temminck) in 1972. We investigated the pathogenicity of this virus in mice in relation to its histological, immunohistochemical and ultrastructural characteristics and the entire sequence of nucleoprotein gene. This virus caused lethal encephalitis in mice through intracerebral route. This susceptibility of mice was until 3 weeks of age. Immunohistochemical analysis using the convalescent sera obtained from survived adult mice after intracerebral inoculation revealed that many neurons were positive in the cytoplasm, besides no cross reactivity with normal and rabies virus-infected mouse brain tissues to this anti-sera. Ultrastructural analysis disclosed many bullet-shaped and enveloped virions in neurons. These morphological characteristics of the virions are consistent of that of viruses in the family Rhabdoviridae. Budding from endoplasmic membrane suggests that this virus has a similarity with lyssaviruses. Molecular analysis of cDNA coding a tentative nucleoprotein sequence revealed homology with those of viruses in the family Rhabdoviridae. Distance matrix analysis of this gene sequence with those of other rhabdoviruses isolated from mammals disclosed the discrete position of this virus in the phylogenic tree of rhabdoviridae infecting mammals and we renamed this virus as Oita rhabdovirus.
Collapse
Affiliation(s)
- T Iwasaki
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Ikegami T, Saijo M, Niikura M, Miranda ME, Calaor AB, Hernandez M, Manalo DL, Kurane I, Yoshikawa Y, Morikawa S. Immunoglobulin G enzyme-linked immunosorbent assay using truncated nucleoproteins of Reston Ebola virus. Epidemiol Infect 2003; 130:533-9. [PMID: 12825739 PMCID: PMC2869991] [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: 03/03/2023] Open
Abstract
We developed an immunoglobulin G (IgG) enzyme-linked immunosorbent assay (ELISA), using partial recombinant nucleoproteins (rNP) of Reston Ebola virus (EBO-R) and Zaire Ebola virus (EBO-Z). We examined the reaction of 10 sera from cynomolgus macaques naturally infected with EBO-R to each of the partial rNP in the IgG ELISA. All the sera reacted to the C-terminal halves of the rNP of both EBO-R and EBO-Z. Most of the sera reacted to the RdeltaC (amino acid (aa) 360-739), and Rdelta6 (aa 451-551) and/or Rdelta8 (aa 631-739) at a higher dilution than to the corresponding truncated rNPs of EBO-Z. The results indicate that this IgG ELISA is useful for detecting EBO-R specific antibody, and may have a potential to discriminate EBO-R infection from other subtypes.
Collapse
Affiliation(s)
- T Ikegami
- Special Pathogens Laboratory, Department of Virology 1, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Abstract
We examined the effect of fosfomycin (FOM) on the inflammatory response induced by carrageenan in the rat. Air pouches were induced subcutaneously on the backs of rats and injected with carrageenan. The rats were treated with either vehicle or FOM at a dose of 100 mg/kg 1 h before carrageenan challenge. After carrageenan challenge (48 h), the air pouches were removed and analyzed. The volume, protein amounts and cell counts in the exudate obtained from FOM-treated animals were significantly reduced compared with that from vehicle-treated animals. The contents of PGE(2) and TNF-alpha, and mRNA for cyclooxygenase-2 were also markedly suppressed in FOM-treated rats. Histological examination showed suppression of the inflammatory response in the pouch tissues from FOM-treated rats.
Collapse
Affiliation(s)
- K Morikawa
- Department of Nutrition, Division of Clinical Nutrition, Sagami Women's University, 2-1-1 Bunkyo, Sagamihara, Kanagawa 228-8533, Japan.
| | | | | | | |
Collapse
|
39
|
Sunohara M, Morikawa S, Sato T, Sato I, Sato T, Fuse A. Modulation of human c-mpl gene expression by thrombopoietin through protein kinase C. Cell Mol Biol (Noisy-le-grand) 2003; 49 Online Pub:OL393-8. [PMID: 14995067] [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: 04/29/2023]
Abstract
The c-Mpl, thrombopoietin (TPO) receptor specificially controls megakaryocytic growth and differentiation. TPO increased the c-mpl promoter activity determined by a transient expression system using a vector containing the luciferase gene as a reporter in the human megakaryoblastic cell line CMK. The maximal promoter activity of c-mpl was obtained 24 hr after pretreatment with TPO for 3 hr and then declined with time. This increase was completely abolished by protein kinase C (PKC) inhibitors (GF109203, calphostin C and H7). Phorbol 12-myristate 13-acetate (PMA) treatment led to an increase in c-mpl promoter activity. These results demonstrate that the promoter activity of c-mpl is modulated by transcription through a PKC-dependent pathway.
Collapse
Affiliation(s)
- M Sunohara
- Department of Safety Research on Blood Products and Biologics, National Institute of Infectious Diseases, 4-7-1, Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | | | | | | | | | | |
Collapse
|
40
|
Ishii H, Arai T, Segawa H, Morikawa S, Inubushi T, Fukuda K. Effects of propofol on lactate accumulation and oedema formation in focal cerebral ischaemia in hyperglycaemic rats. Br J Anaesth 2002; 88:412-7. [PMID: 11990276 DOI: 10.1093/bja/88.3.412] [Citation(s) in RCA: 21] [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: 11/13/2022] Open
Abstract
BACKGROUND In cerebral ischaemia, hyperglycaemia brings about severe lactate accumulation and neuronal damage when compared with normoglycaemia. Propofol has been known to suppress glucose metabolism in the brain and possess neuroprotective properties in cerebral ischaemia. Therefore, in this study we examined if propofol could attenuate lactate accumulation and neuronal damage in cerebral ischaemia under hyperglycaemic conditions. METHODS Ten male wistar rats were divided into two experimental groups: low-dose (approximately 12 mg kg(-1) h(-1)) and high-dose (approximately 60 mg kg(-1) h(-1)) propofol groups (n=5 for each). Following injection of 2 g kg(-1) glucose intraperitoneally, the middle cerebral artery was occluded for 1 h, and then reperfused for the following 2 h. Lactate accumulation and oedema formation were estimated consecutively using nuclear magnetic resonance (NMR) techniques. RESULTS Lactate accumulation and oedema formation increased continuously during ischaemia and reperfusion in the low-dose propofol group, which was attenuated in the high-dose propofol group. Lactate/NAA (N-acetylaspartate) ratio (as an index of lactate accumulation) 60 and 120 min after reperfusion were 2.67 and 3.26 in low-dose group and 0.30 and 0.10 in high-dose group. For NMR images the number of pixels with a low average diffusion coefficient (an index of the oedema formation), 60 and 120 min after reperfusion were 250.0 and 317.8 in low-dose group, and 16.0 and 12.4 in high-dose group. CONCLUSION High-dose propofol attenuated lactate accumulation and oedema formation in cerebral ischaemia in hyperglycaemic rats.
Collapse
Affiliation(s)
- H Ishii
- Department of Anesthesia, Kyoto University Hospital, Japan
| | | | | | | | | | | |
Collapse
|
41
|
Abstract
The effect of the macrolide antibiotics, clarithromycin, midecamycin acetate and josamycin, on the generation of Th1- and Th2-type cytokines by mitogen-stimulated human T lymphocytes was compared with that of fosfomycin. The following results were obtained. These drugs demonstrated potent inhibitory activity on the release and gene expression of TNF-alpha and IL-2. Their inhibitory effect on IFN-alpha, IL-4, IL-5, IL-6 was less marked. The release of IL-10 was poorly suppressed. Clarithromycin had the most potent inhibitory effect of the drugs used. The present results suggested that anti-bacterial agents might modify the host's immunological response by interfering with the activity of T helper cells.
Collapse
Affiliation(s)
- K Morikawa
- Division of Clinical Nutrition, Department of Nutrition, Sagami Women's University, Bunkyo 2-1-1, Kanagawa 228-8533, Sagamihara, Japan.
| | | | | | | |
Collapse
|
42
|
Abstract
The CD5 molecule, pan T cell marker, has been known to be expressed on a minor population of B cells, termed B-1 cells. However, the physiological function and pathological role of CD5+B (B-1) cells remain to be fully elucidated in humans. In the present study, we aimed to clarify the significance of CD5 expression on the B lymphocytes in human tonsil. Using flow cytometric analysis by three-colour immunofluorescence staining, we observed a majority of the cell surface CD5-positive (sCD5+) B cells among the sIgD+ B-cell population, as previously described. Contrary to our expectation, approximately half of the sIgD+/sCD5+ B cells expressed CD38 on their cell surface. Furthermore, a small number of sCD5+ were observed in the sIgD- B cell population. The addition of anti-CD5 monoclonal antibody (MoAb) to the culture induced downmodulation of sCD20 and sIgD of the tonsillar B cells, resulting in an increase of sCD38-/sIgD- (memory) B cells during the 10 day culture periods in the CD40/l cell culture system. Our findings suggest that ligation of CD5 might transduce the signal to regulate B cell maturation.
Collapse
Affiliation(s)
- K Morikawa
- Division of Clinical Nutrition, Department of Nutrition, Faculty of Liberal Arts, Sagami Women's University, 2-1-1 Bunkyo, Sagamihara, Kanagawa 228-8533, Japan.
| | | | | |
Collapse
|
43
|
Nakagawa N, Kubota R, Morikawa S, Nakagawa T, Baba K, Okuno Y. Characterization of new epidemic strains of influenza B virus by using neutralizing monoclonal antibodies. J Med Virol 2001; 65:745-50. [PMID: 11745940 DOI: 10.1002/jmv.2099] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
During the 1998-1999 influenza season, two distinct influenza B virus Yamagata group strains were isolated from the patients of a private clinic. Each responded differently to monoclonal antibodies (Mabs) 5H4 and 8B3 on staining, and hemagglutination inhibition and neutralizing tests. When the analysis of nucleotide sequences was undertaken, the identity of deduced amino acid sequences of the HA1 region was 94%, which suggested that they derived from different strains. They were termed 5H4-responding strains and 5H4-nonresponding strains, respectively. The analysis of laboratory-induced antigenic variants suggested that the amino acid at position 149 is important to the reactivity to 5H4. This residue was "Arg" in 5H4-responding strains and "Lys" in nonresponding strains. During the 1998-1999 season, a total of 100 influenza B virus strains were isolated and 5H4-responding strains were the major type (94 strains). In the 1999-2000 influenza season, only two influenza B virus strains were isolated. Neither responded to 5H4. However, analysis of the deduced amino acid sequences of the HA1 region suggested that one of the two strains was derived from the 5H4-responding strains of the previous season. The amino acid residue at position 149 was "Lys" in place of "Arg." These observations suggested that 5H4-nonresponding strains will increase in coming seasons.
Collapse
Affiliation(s)
- N Nakagawa
- Division of Virology, Department of Public Health, Osaka Prefectural Institute of Public Health, Nakamichi, Higashinari-ku, Osaka, Japan.
| | | | | | | | | | | |
Collapse
|
44
|
Morikawa S, Saijo M, Niikura M, Kurane I. [Viral hemorrhagic fever and its diagnosis system in Japan]. Uirusu 2001; 51:215-24. [PMID: 11977764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- S Morikawa
- Special Pathogens Laboratory, Department of Virology 1, National Institute of Infectious Diseases, 4-7-21 Gakuen, Musashimurayama, Tokyo 208-0011, Japan.
| | | | | | | |
Collapse
|
45
|
Suzuki E, Kashiwagi A, Nishio Y, Egawa K, Shimizu S, Maegawa H, Haneda M, Yasuda H, Morikawa S, Inubushi T, Kikkawa R. Increased arterial wall stiffness limits flow volume in the lower extremities in type 2 diabetic patients. Diabetes Care 2001; 24:2107-14. [PMID: 11723092 DOI: 10.2337/diacare.24.12.2107] [Citation(s) in RCA: 146] [Impact Index Per Article: 6.3] [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: 02/03/2023]
Abstract
OBJECTIVE To document an association between arterial wall stiffness and reduced flow volume in the lower-extremity arteries of diabetic patients. RESEARCH DESIGN AND METHODS We recruited 60 consecutive type 2 diabetic patients who had no history or symptoms of peripheral arterial disease (PAD) in the lower extremities and normal ankle/brachial systolic blood pressure index at the time of the study (non-PAD group) and 20 age-matched nondiabetic subjects (control group). We used an automatic device to measure pulse wave velocity (PWV) in the lower extremities as an index of arterial wall stiffness. At the popliteal artery, we evaluated flow volume and the resistive index as an index of arterial resistance to blood flow using gated two-dimensional cine-mode phase-contrast magnetic resonance imaging. RESULTS Consistent with previous reports, we confirmed that the non-PAD group had an abnormally higher PWV compared with that of the control group (P < 0.001). To further demonstrate decreased flow volume and abnormal flow pattern at the popliteal artery in patients with a higher degree of arterial wall stiffness, we assigned the 60 non-PAD patients to tertiles based on their levels of PWV. In the highest group, magnetic resonance angiograms of the calf and foot arteries showed decreased intravascular signal intensity, indicating the decreased arterial inflow in those arteries. The highest group was also characterized by the lowest late diastolic and total flow volumes as well as the highest resistive index among the groups. From stepwise multiple regression analysis, PWV and autonomic function were identified as independent determinants for late diastolic flow volume (r(2) = 0.300; P < 0.001). CONCLUSIONS Arterial wall stiffness was associated with reduced arterial flow volume in the lower extremities of diabetic patients.
Collapse
Affiliation(s)
- E Suzuki
- Third Department of Medicine, Shiga University of Medical Science, Shiga, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
This study examined whether the functional field of view was shrunk by negative emotion. The functional field of view was determined in terms of the number detection task, in which a number presented for a brief exposure peripherally in one of the four video screen corners. Participants watched either negative emotional or neutral event on the screen. Emotion was evaluated by means of self-ratings of mood adjective checklist, and the results showed that tensional arousal increased in participants who watched the negative emotional event. After watching the video participants were asked to report whether they noticed the number. Participants who watched the emotional event were able to detect fewer numbers than participants who watched the neutral event. This result suggests that the functional field of view shrank because of negative emotion. Peripheral memory decrement reported in previous studies might be due to the shrinkage of the functional field of view.
Collapse
Affiliation(s)
- W Oue
- Department of Cognitive Psychology, Faculty of Letters, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581
| | | | | | | |
Collapse
|
47
|
Ohsawa N, Tsujita M, Morikawa S, Itoh N. Purification and characterization of a monohalomethane-producing enzyme S-adenosyl-L-methionine: halide ion methyltransferase from a marine microalga, Pavlova pinguis. Biosci Biotechnol Biochem 2001; 65:2397-404. [PMID: 11791711 DOI: 10.1271/bbb.65.2397] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 11/08/2022]
Abstract
A monohalomethane-producing enzyme, S-adenosyl-L-methionine-dependent halide ion methyltransferase (EC 2.1.1.-) was purified from the marine microalga Pavlova pinguis by two anion exchange, hydroxyapatite and gel filtration chromatographies. The methyltransferase was a monomeric molecule having a molecular weight of 29,000. The enzyme had an isoelectric point at 5.3, and was optimally active at pH 8.0. The Km for iodide and SAM were 12 mM and 12 microM, respectively, which were measured using a partially purified enzyme. Various metal ions had no significant effect on methyl iodide production, suggesting that the enzyme does not require metal ions. The enzyme reaction strictly depended on SAM as a methyl donor, and the enzyme catalyzed methylation of the I-, Br-, and Cl- to corresponding monohalomethanes and of bisulfide to methyl mercaptan.
Collapse
Affiliation(s)
- N Ohsawa
- Biotechnology Research Center, Toyama Prefectural University, Japan
| | | | | | | |
Collapse
|
48
|
Koirala TR, Nakagaki K, Ishida T, Nonaka S, Morikawa S, Tabira T. Decreased expression of MAP-2 and GAD in the brain of cats infected with feline immunodeficiency virus. TOHOKU J EXP MED 2001; 195:141-51. [PMID: 11874247 DOI: 10.1620/tjem.195.141] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/18/2022]
Abstract
HIV-1 infection is often complicated by the dysfunction of central nervous system (CNS). Degenerative neuronal changes as well as neuronal loss have been documented in individuals with acquired immunodeficiency syndrome. Feline immunodeficiency virus (FIV) causes similar CNS manifestation and FIV infected cats provide an animal model for human immunodeficiency virus infection in humans. In this study, we examined the brain of FIV-infected cats and controls with immunohistochemical techniques using antibodies to microtubule-associated protein 2 (MAP-2) and glutamic acid decarboxylase (GAD). We found a significant decrease in expression of MAP-2 and GAD in neurons of infected animals compared to controls. In contrast, the expression of neurofilaments and glial fibrillary acidic protein was rather increased. The changes observed in the brain were similar to those seen in humans undergoing the normal aging process as well as those suffering from neurological diseases like Alzheimer's disease and other dementing disorders. These changes in the feline brain give insight into the deleterious effects of FIV on the CNS.
Collapse
Affiliation(s)
- T R Koirala
- Division of Demyelinating Disease and Aging, National Institute of Neuroscience, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
49
|
Ikegami T, Calaor AB, Miranda ME, Niikura M, Saijo M, Kurane I, Yoshikawa Y, Morikawa S. Genome structure of Ebola virus subtype Reston: differences among Ebola subtypes. Brief report. Arch Virol 2001; 146:2021-7. [PMID: 11722021 DOI: 10.1007/s007050170049] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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
We determined the complete genome sequence of Ebola virus subtype Reston (EBO-R) in the Philippines in 1996. The deduced transcriptional signals were highly conserved among Ebola viruses except for the stop signal of L genes. The intergenic regions were composed of 4 to 7 nucleotides, and of 2 characteristic overlaps and a long intergenic region. The glycoprotein (GP) had several amino acid differences from EBO-R isolated in 1989 and 1992. The variety of GP sequences strongly suggests the independent introduction of EBO-R from unknown natural reservoirs in 1996.
Collapse
Affiliation(s)
- T Ikegami
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Naka S, Kurumi Y, Shimizu T, Kondo H, Mekata E, Naito H, Kawaguchi A, Abe H, Endo Y, Hanasawa K, Tani T, Morikawa S, Ishizuka Y, Yamazaki M, Furukawa K. [Tumor ablation with MRI navigation--a novel method of microwave coagulation therapy for hepatic tumor]. Gan To Kagaku Ryoho 2001; 28:1591-4. [PMID: 11707987] [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: 02/22/2023]
Abstract
Fifty-eight patients with hepatic tumor which consisted of 22 hepatocellular carcinomas and 36 metastatic liver tumors were treated by microwave coagulation therapy with MRI navigation. The tumors were located in all segments of liver except S1. In 24 cases among them, the abdominal approach was difficult, because the tumors were located just below the diaphragm. These cases were selected for thoracoscope-assisted microwave ablation under MR-guidance across the diaphragm. All MR data were collected on a vertically oriented open MRI system (0.5 T SIGNA SP/i system: GE Medical Systems). The microwave electrode was introduced into the liver through a 14G needle via a percutaneous puncture with real-time MR image navigation. Microwave ablations at 60 W for 60 seconds were repeated several times depending on the tumor size. MR imaging may be employed as a reliable guide for percutaneous puncture. Moreover, sufficient safety margin could be obtained for hepatic tumor ablation. MR-guided microwave thermoablation therapy is a feasible method of treatment for hepatic tumors.
Collapse
Affiliation(s)
- S Naka
- 1st. Dept. of Surgery, Shiga University of Medical Science
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|