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Kamisaki F, Inoue T, Tomiyoshi K, Matsuki M, Aoki K, Kusaka S, Tamaki S, Sato F, Murata I. Accurate gamma-ray dose measurement up to 10 MeV by glass dosimeter with a sensitivity control filter for BNCT. Appl Radiat Isot 2024; 209:111299. [PMID: 38613949 DOI: 10.1016/j.apradiso.2024.111299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 01/28/2024] [Accepted: 03/18/2024] [Indexed: 04/15/2024]
Abstract
Glass dosimeters are very useful and convenient detection elements in radiation dosimetry. In this study, this glass dosimeter was applied to a BNCT treatment field. Boron Neutron Capture Therapy (BNCT) is a next-generation radiation therapy that can selectively kill only cancer cells. In the BNCT treatment field, both neutrons and secondary gamma-rays are generated. In other words, it is a mixed radiation field of neutrons and gamma-rays. We thus proposed a novel method to measure only gamma-ray dose in the mixed field using two RPLGD (Radiophoto-luminescence Glass Dosimeter) and two sensitivity control filters in order to control the dose response of the filtered RPLGD to be proportional to the air kerma coefficients, even if the gamma-ray energy spectrum is unknown. As the filter material iron was selected, and it was finally confirmed that reproduction of the air kerma coefficients was excellent within an error of 5.3% in the entire energy range up to 10 MeV. In order to validate this method, irradiation experiments were carried out using standard gamma-ray sources. As the result, the measured doses were in acceptably good agreement with the theoretical calculation results by PHITS. In the irradiation experiment with a volume source in a nuclear fuel storage room, the measured dose rates showed larger compared with survey meter values. In conclusion, the results of the standard sources showed the feasibility of this method, however for the volume source the dependence of the gamma-ray incident angle on the dosimeter was found to be not neglected. In the next step, it will be necessary to design a thinner filter in order to suppress the effect of the incident angle.
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Affiliation(s)
- F Kamisaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - T Inoue
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Tomiyoshi
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - M Matsuki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Aoki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Kusaka
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Tamaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - F Sato
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - I Murata
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan.
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Tochitani K, Tomiyoshi K, Inoue T, Kamisaki F, Matsuki M, Hiramatsu K, Aoki K, Kusaka S, Tamaki S, Sato F, Murata I. Response control of RPLGD for gamma-ray dose measurement using lead filters for BNCT. Appl Radiat Isot 2023; 199:110897. [PMID: 37352647 DOI: 10.1016/j.apradiso.2023.110897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/20/2023] [Accepted: 06/06/2023] [Indexed: 06/25/2023]
Abstract
Boron Neutron Capture Therapy (BNCT) is a cell-selective radiotherapy using a neutron capture reaction of 10B. In recent years, Accelerator Based Neutron Sources (ABNS) are under development instead of nuclear reactors for the next-generation neutron irradiation system for BNCT. However, ABNS as well as nuclear reactor usually generates unavoidable secondary gamma-rays by neutron-nuclear reactions such as capture reaction. In this research, we aimed to develop a separate measurement method of only gamma-rays in a mixed field of neutrons and gamma-rays using a fluorescent glass dosimeter (RPLGD), because most dosimeters have sensitivity to both radiation types. For this purpose, we proposed a lead filter method using two RPLGDs and lead filters. However, this method has a problem that the sensitivity to low energy gamma-rays (∼100 keV) is very small. In order to improve the sensitivity to low energy gamma-rays, we devised a method using a specially shaped lead filter. From theoretical calculations, we have shown that it was possible to estimate the air dose rate of the field where the gamma-ray energy spectrum shape was known for energies up to 10 MeV. In addition, we produced the specially shaped lead filter and experimentally confirmed the validity of the lead filter method using several gamma-ray standard sources and by measurements in a nuclear fuel storage room.
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Affiliation(s)
- K Tochitani
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Tomiyoshi
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - T Inoue
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - F Kamisaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - M Matsuki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Hiramatsu
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Aoki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Kusaka
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Tamaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - F Sato
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - I Murata
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan.
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Katanoda K, Ideno Y, Maruoka N, Nagai K, Tsukada Y, Matsuki M, Higashi T, Hayashi K. Validation of Identifying Cancer Diagnosis Based on Self-Reported Information in the Japan Nurses' Health Study. Asian Pac J Cancer Prev 2022; 23:651-657. [PMID: 35225478 PMCID: PMC9272630 DOI: 10.31557/apjcp.2022.23.2.651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Indexed: 11/25/2022] Open
Abstract
Background: The Japan Nurses’ Health Study (JNHS) is a large-scale, nationwide prospective cohort study of female nurses. This study aimed to examine the validity of self-reported diagnosis of cancer among the JNHS cohort members (N=15,019). Methods: For women who reported any diagnosis of five cancers (stomach, colorectal, liver, lung and thyroid) in the biennial follow-up surveys, an additional outcome survey, medical facility survey, and confirmation of death certificate (DC) were conducted. The JNHS Validation Study Committee (referred to as “the committee”) made a final decision on the reported outcomes. To examine the validity of self-reported diagnosis of cancer, the positive predictive value (PPV) was calculated using the committee’s decision as the gold standard. To examine the validity of the committee’s decision based on self-reports and DCs, PPV was calculated using physician-reported information as the gold standard. Results: The PPV of self-reported diagnosis in the biennial follow-up surveys was 77.8% for stomach, 66.2% for colorectal, 41.7% for liver, 60.2% for lung, and 64.6% for thyroid cancer. The corresponding PPVs in the additional outcome survey were 96.2%, 80.7%, 62.5%, 82.5%, and 96.9%, respectively. The PPV of the committee’s decision was 100% for stomach, 87.5% for colorectal, 94.7% for lung, and 100% for thyroid cancer (data not available for liver cancer). The proportion of DC-only cases among committee-defined cases was below 10% for all cancers except liver cancer (28.6%). Conclusions: The validity of identifying cancer diagnosis based on self-reported information in the JNHS was favorable for stomach, colorectal, lung and thyroid cancer.
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Affiliation(s)
- Kota Katanoda
- Division of Cancer Statistics Integration, Center for Cancer Control and Information Services, National Cancer Center, 5-1-1 Tsukiji Chuo-ku Tokyo, 104-0045 Japan
| | - Yuki Ideno
- Gunma University Center for Mathematics and Data Science, 3-39-22 Showa-machi, Maebashi City, Gunma 371-8511 Japan
| | - Naho Maruoka
- Graduate School of Health Science, Gunma University, 3-39-22 Showa-machi, Maebashi City, Gunma 371-8514 Japan
| | - Kazue Nagai
- Graduate School of Health Science, Gunma University, 3-39-22 Showa-machi, Maebashi City, Gunma 371-8514 Japan
| | - Yoichiro Tsukada
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, 5-1-1 Tsukiji Chuo-ku Tokyo, 104-0045 Japan
| | - Mei Matsuki
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, 5-1-1 Tsukiji Chuo-ku Tokyo, 104-0045 Japan
| | - Takahiro Higashi
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, 5-1-1 Tsukiji Chuo-ku Tokyo, 104-0045 Japan
| | - Kunihiko Hayashi
- Graduate School of Health Science, Gunma University, 3-39-22 Showa-machi, Maebashi City, Gunma 371-8514 Japan
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Watanabe T, Ichinose Y, Matsuki M, Wakita T, Toida T, Masuda M, Higashi T. Experiences of patients with cancer at health care facilities in Japan: results from a nationwide survey. BMC Health Serv Res 2021; 21:1180. [PMID: 34715853 PMCID: PMC8556904 DOI: 10.1186/s12913-021-07184-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/14/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To elucidate the experience of patients with cancer from diagnosis to early survivorship in Japan using a nationwide questionnaire survey, and to inform the current progress of the cancer control programs. METHODS The survey was sent to a representative sample of adult patients with cancer identified from the national database of hospital-based cancer registries. The patients' responses were compared across three groups: patients with rare cancers, patients aged < 40 years, and patients with non-rare cancers aged ≥40 years. RESULTS Of 20,488 patients invited to participate in the survey, 8935 (43.6%) responded. Respondents reported an average score of 7.9 out of 10 on global ratings of care. Patients with rare cancers experienced a longer time to diagnosis but the shortest time from diagnosis to first treatment (p < 0.05). Patients aged < 40 years rated worse for the majority of the survey items, especially on items that related to communication with medical staff and items referring to early survivorship. CONCLUSION The care experienced by patients with cancer in Japan varies on the basis of age group and cancer type. Efforts should be directed to ensuring prompt access to diagnostic facilities for patients with rare cancers and providing sufficient support to younger patients.
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Affiliation(s)
- Tomone Watanabe
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan. .,Department of Cancer Health Services Research, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan.
| | - Yuichi Ichinose
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan
| | - Mei Matsuki
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan.,Department of Respiratory Medicine, the University of Tokyo, Tokyo, Japan
| | - Takafumi Wakita
- Department of Social Psychology, Kansai University, Osaka, Japan
| | - Tsutomu Toida
- Department of Economics, Dokkyo University, Saitama, Japan
| | - Masato Masuda
- University of Ryukyus Hospital Cancer Center, Okinawa, Japan
| | - Takahiro Higashi
- Division of Health Services Research, Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan.,Department of Cancer Health Services Research, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
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Takeda K, Suzuki J, Watanabe A, Matsuki M, Higa K, Inoue E, Akashi S, Shimada M, Kawashima M, Ohshima N, Fukami T, Masuda K, Yamane A, Tamura A, Nagai H, Matsui H, Tohma S, Kamei K. Species identification, antifungal susceptibility, and clinical feature association of Aspergillus section Nigri isolates from the lower respiratory tract. Med Mycol 2020; 58:310-314. [PMID: 31240316 DOI: 10.1093/mmy/myz072] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/04/2019] [Accepted: 06/05/2019] [Indexed: 12/18/2022] Open
Abstract
Species of Aspergillus section Nigri are generally identified by molecular genetics approaches, whereas in clinical practice, they are classified as A. niger by their morphological characteristics. This study aimed to investigate whether the species of Aspergillus section Nigri isolated from the respiratory tract vary depending on clinical diagnosis. Forty-four Aspergillus section Nigri isolates isolated from the lower respiratory tracts of 43 patients were collected from February 2012 to January 2017 at the National Hospital Organization (NHO) Tokyo National Hospital. Species identification was carried out based on β-tubulin gene analysis. Drug susceptibility tests were performed according to the Clinical and Laboratory Standards Institute (CLSI) M38 3rd edition, and the clinical characteristics were retrospectively reviewed. A. welwitschiae was isolated most frequently, followed by A. tubingensis. More than half of the A. tubingensis isolates exhibited low susceptibility to azoles in contrast to only one A. welwitschiae isolate. Approximately three quarters of the patients from whom A. welwitschiae was isolated were diagnosed with colonization, whereas more than half the patients from whom A. tubingensis was isolated were diagnosed with chronic pulmonary aspergillosis (CPA). More attention needs to be given to the drug choice for patients with CPA with Aspergillus section Nigri infection because A. tubingensis, which was found to be frequently azole-resistant, was the most prevalent in these patients.
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Affiliation(s)
- Keita Takeda
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan.,Department of Basic Mycobacteriology, Graduate School of Biomedical Science, Nagasaki University, Nagasaki, Japan
| | - Junko Suzuki
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Akira Watanabe
- Division of Clinical Research, Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Mei Matsuki
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Katsuyuki Higa
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Eri Inoue
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Shunsuke Akashi
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Masahiro Shimada
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Masahiro Kawashima
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Nobuharu Ohshima
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Takeshi Fukami
- Department of Thoracic Surgery, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Kimihiko Masuda
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Akira Yamane
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Atsuhisa Tamura
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Hideaki Nagai
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Hirotoshi Matsui
- Center for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Shigeto Tohma
- Asthma, Allergy and Rheumatology Center, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - Katsuhiko Kamei
- Division of Clinical Research, Medical Mycology Research Center, Chiba University, Chiba, Japan
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6
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Takeda K, Suzuki J, Watanabe A, Matsuki M, Higa K, Inoue E, Akashi S, Shimada M, Kawashima M, Ohshima N, Fukami T, Masuda K, Yamane A, Tamura A, Nagai H, Matsui H, Tohma S, Kamei K. Species identification, antifungal susceptibility, and clinical feature association of Aspergillus section Nigri isolates from the lower respiratory tract. Med Mycol 2020; 58:E3. [PMID: 31384931 DOI: 10.1093/mmy/myz085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Kamii Y, Nagai H, Kawashima M, Matsuki M, Nagoshi S, Sato A, Kohno S, Ohgiya M, Ohta K. Adverse reactions associated with long-term drug administration in Mycobacterium avium complex lung disease. Int J Tuberc Lung Dis 2019; 22:1505-1510. [PMID: 30606324 DOI: 10.5588/ijtld.18.0171] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING The number of patients with non-tuberculous mycobacterial lung disease (NTM-LD) worldwide has been increasing. Mycobacterium avium complex lung disease (MAC-LD) accounts for 90% of NTM-LD. MAC-LD necessitates long-term treatment, but adverse reactions with long-term administration of drugs are poorly understood. OBJECTIVE To evaluate adverse reactions with long-term administration of drugs for MAC-LD. DESIGN We conducted a retrospective single-centre medical chart review of 364 patients administered two or more drugs between July 2010 and June 2015. RESULTS The prevalence and median time to onset of adverse reactions were as follows: hepatotoxicity 19.5%, 55 days; leucocytopaenia 20.0%, 41 days; thrombocytopaenia 28.6%, 61.5 days; cutaneous reactions 9.3%, 30 days; ocular toxicity 7.7%, 278 days; and increase in serum creatinine 12.4%, 430.5 days. Multivariate analysis showed that rifampicin use was independently associated with thrombocytopaenia, and ethambutol use was independently associated with increases in serum creatinine. CONCLUSION The main adverse reactions appeared within 3 months after start of treatment. Most patients were able to continue treatment with liver-supporting therapy, antihistamine agents or desensitisation therapy; however, ocular toxicity must be monitored for up to 1 year after start of treatment.
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Affiliation(s)
- Y Kamii
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - H Nagai
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - M Kawashima
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - M Matsuki
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - S Nagoshi
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - A Sato
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - S Kohno
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - M Ohgiya
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
| | - K Ohta
- Centre for Pulmonary Diseases, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
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Kiguchi T, Sato C, Takai K, Nakai Y, Kaneko Y, Matsuki M. CT findings in 11 patients with TAFRO syndrome: a variant of multicentric Castleman's disease. Clin Radiol 2017. [DOI: 10.1016/j.crad.2017.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Minoshima A, Kawabe K, Matsuki M, Saito Y, Kabara M, Hayasaka T, Yoshida Y, Aonuma T, Nishimura M, Takehara N, Hasebe N. P175Ninjurin1 is a novel factor for vascular maturation and mediates the blood flow recovery in the hind limb ischemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p175] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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10
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Kimura T, Adachi Y, Matsuki M, Yamaguchi A, Ozawa Y, Okamoto K, Mitsuhashi K, Hoshi T, Tohyama O, Tai K, Ogo M, Matsui J, Funahashi Y. The antitumor activity of lenvatinib (LEN) in combination with everolimus (EVE) in human renal cell carcinoma (RCC) xenograft models is dependent on VEGFR and FGFR signaling. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw362.06] [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: 11/14/2022] Open
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Hamano M, Saito M, Eto M, Nishimatsu S, Suda H, Matsuda M, Matsuki M, Yamamoto S, Kaku K. Serum amyloid A, C-reactive protein and remnant-like lipoprotein particle cholesterol in type 2 diabetic patients with coronary heart disease. Ann Clin Biochem 2016; 41:125-9. [PMID: 15025802 DOI: 10.1258/000456304322880005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background: Serum amyloid A (SAA) and C-reactive protein (CRP) have been suggested to be involved in the process of coronary heart disease (CHD) and to be potential markers and/or predictors of CHD. Remnant-like lipoprotein particles (RLPs), which are regarded as atherogenic remnant lipoprotein, are reported to be increased in type 2 diabetic patients. We assessed the association of CHD with SAA, CRP and RLP-cholesterol in type 2 diabetic patients. Methods: One hundred and twenty-six diabetic patients without CHD and 41 patients with CHD were recruited from our hospital. Plasma SAA was measured by the latex agglutination nephelometric immunoassay. Plasma high-sensitivity CRP was measured by a latex immunoturbidity method. Plasma RLP-cholesterol was measured by an immunoabsorption enzyme method. Results: The mean standard deviation values of RLP-cholesterol in patients with and without CHD were 0.22 (0.26) mmol/L and 0.15 (0.10) mmol/L, respectively ( P <0.05). Median (interquartile ranges) for SAA in patients with and without CHD were 7.4 (4.2-11.2) mg/L and 3.9 (2.2-5.9) mg/L, respectively ( P <0.001). Median (interquartile ranges) for CRP in patients with and without CHD was 1.14 (0.45-2.08) mg/L and 0.43 (0.19-1.25) mg/L, respectively ( P <0.001). For all patients, the Spearman rank correlation statistics for RLP-cholesterol compared with SAA and with CRP were 0.213 ( P <0.05) and 0.301 ( P <0.01), respectively. Conclusion: These data suggest that SAA, CRP and RLP-cholesterol are increased in type 2 diabetic patients with CHD, and that the inflammatory proteins correlate with remnant lipoprotein.
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Affiliation(s)
- M Hamano
- Clinical Laboratory, Kawasaki Medical School, Kurashiki 701-0192, Japan
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12
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Hamamoto S, Kaneto H, Kamei S, Shimoda M, Tawaramoto K, Kanda-Kimura Y, Kawasaki F, Hashiramoto M, Matsuki M, Mune T, Kaku K. Low bilirubin levels are an independent risk factor for diabetic retinopathy and nephropathy in Japanese patients with type 2 diabetes. Diabetes Metab 2015; 41:429-31. [PMID: 26054296 DOI: 10.1016/j.diabet.2015.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 05/07/2015] [Accepted: 05/10/2015] [Indexed: 11/17/2022]
Affiliation(s)
- S Hamamoto
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - H Kaneto
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan.
| | - S Kamei
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - M Shimoda
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - K Tawaramoto
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - Y Kanda-Kimura
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - F Kawasaki
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - M Hashiramoto
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - M Matsuki
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - T Mune
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
| | - K Kaku
- Department of Diabetes, Endocrinology and Metabolism, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan
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Takahashi H, Ishii K, Hosokawa C, Hyodo T, Kashiwagi N, Matsuki M, Ashikaga R, Murakami T. Clinical application of 3D arterial spin-labeled brain perfusion imaging for Alzheimer disease: comparison with brain perfusion SPECT. AJNR Am J Neuroradiol 2013; 35:906-11. [PMID: 24263694 DOI: 10.3174/ajnr.a3780] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Alzheimer disease is the most common neurodegenerative disorder with dementia, and a practical and economic biomarker for diagnosis of Alzheimer disease is needed. Three-dimensional arterial spin-labeling, with its high signal-to-noise ratio, enables measurement of cerebral blood flow precisely without any extrinsic tracers. We evaluated the performance of 3D arterial spin-labeling compared with SPECT, and demonstrated the 3D arterial spin-labeled imaging characteristics in the diagnosis of Alzheimer disease. MATERIALS AND METHODS This study included 68 patients with clinically suspected Alzheimer disease who underwent both 3D arterial spin-labeling and SPECT imaging. Two readers independently assessed both images. Kendall W coefficients of concordance (K) were computed, and receiver operating characteristic analyses were performed for each reader. The differences between the images in regional perfusion distribution were evaluated by means of statistical parametric mapping, and the incidence of hypoperfusion of the cerebral watershed area, referred to as "borderzone sign" in the 3D arterial spin-labeled images, was determined. RESULTS Readers showed K = 0.82/0.73 for SPECT/3D arterial spin-labeled imaging, and the respective areas under the receiver operating characteristic curve were 0.82/0.69 for reader 1 and 0.80/0.69 for reader 2. Statistical parametric mapping showed that the perisylvian and medial parieto-occipital perfusion in the arterial spin-labeled images was significantly higher than that in the SPECT images. Borderzone sign was observed on 3D arterial spin-labeling in 70% of patients misdiagnosed with Alzheimer disease. CONCLUSIONS The diagnostic performance of 3D arterial spin-labeling and SPECT for Alzheimer disease was almost equivalent. Three-dimensional arterial spin-labeled imaging was more influenced by hemodynamic factors than was SPECT imaging.
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Affiliation(s)
- H Takahashi
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan.
| | - K Ishii
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - C Hosokawa
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - T Hyodo
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - N Kashiwagi
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - M Matsuki
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - R Ashikaga
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - T Murakami
- From the Department of Radiology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
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14
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Seya K, Kanemaru K, Matsuki M, Hongo K, Kitahara H, Kikuchi H, Oshima Y, Kubohara Y, Okumura K, Motomura S, Furukawa KI. Br-DIF-1 accelerates dimethyl sulphoxide-induced differentiation of P19CL6 embryonic carcinoma cells into cardiomyocytes. Br J Pharmacol 2012; 165:870-9. [PMID: 21671902 DOI: 10.1111/j.1476-5381.2011.01541.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Stem cell transplantation therapy is a promising option for treatment of severe ischaemic heart disease. Dimethyl sulphoxide (DMSO) differentiates P19CL6 embryonic carcinoma cells into cardiomyocyte-like cells, but with low differentiation capacity. To improve the degree of this differentiation, we have assessed several derivatives of the differentiation-inducing factor-1 (DIF-1), originally found in the cellular slime mould Dictyostelium discoideum, on P19CL6 cells. EXPERIMENTAL APPROACH P19CL6 cells were cultured with each derivative and 1% DMSO for up to 16 days. Differentiation was assessed by measuring the number of beating and non-beating aggregates, and the expression of genes relevant to cardiac tissue. The mechanism of action was investigated using a T-type Ca(2+) channel blocker. KEY RESULTS Of all the DIF-1 derivatives tested only Br-DIF-1 showed any effects on cardiomyocyte differentiation. In the presence of 1% DMSO, Br-DIF-1 (0.3-3 µM) significantly and dose-dependently increased the number of spontaneously beating aggregates compared with 1% DMSO alone, by day 16. Expression of mRNA for T-type calcium channels was significantly increased by Br-DIF-1 + 1% DMSO compared with 1% DMSO alone. Mibefradil (a T-type Ca(2+) channel blocker; 100 nM) and a small interfering RNA for the T-type Ca(2+) channel both significantly decreased the beating rate of aggregates induced by Br-DIF-1 + 1% DMSO. CONCLUSIONS AND IMPLICATIONS Br-DIF-1 accelerated the differentiation, induced by 1% DMSO, of P19CL6 cells into spontaneously beating cardiomyocyte-like cells, partly by enhancing the expression of the T-type Ca(2+) channel gene.
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Affiliation(s)
- K Seya
- Department of Pharmacology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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15
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Tatsugami F, Matsuki M, Nakai G, Inada Y, Kanazawa S, Takeda Y, Morita H, Takada H, Yoshikawa S, Fukumura K, Narumi Y. The effect of adaptive iterative dose reduction on image quality in 320-detector row CT coronary angiography. Br J Radiol 2012; 85:e378-82. [PMID: 22253355 DOI: 10.1259/bjr/10084599] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the effect of adaptive iterative dose reduction (AIDR) on image noise and image quality as compared with standard filtered back projection (FBP) in 320-detector row CT coronary angiography (CTCA). METHODS 50 patients (14 females, mean age 68 ± 9 years) who underwent CTCA (100 kV or 120 kV, 400-580 mA) within a single heartbeat were enrolled. Studies were reconstructed with FBP and subsequently AIDR. Image noise, vessel contrast and contrast-to-noise ratio (CNR) in the coronary arteries were evaluated. Overall image quality for coronary arteries was assessed using a five-point scale (1, non-diagnostic; 5, excellent). RESULTS All the examinations were performed in a single heartbeat. Image noise in the aorta was significantly lower in data sets reconstructed with AIDR than in those reconstructed with FBP (21.4 ± 3.1 HU vs 36.9 ± 4.5 HU; p<0.001). No significant differences were observed between FBP and AIDR for the mean vessel contrast (HU) in the proximal coronary arteries. Consequently, CNRs in the proximal coronary arteries were higher in the AIDR group than in the FBP group (p<0.001). The mean image quality score was improved by AIDR (3.75 ± 0.38 vs 4.24 ± 0.38; p<0.001). CONCLUSION The use of AIDR reduces image noise and improves image quality in 320-detector row CTCA.
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Affiliation(s)
- F Tatsugami
- Department of Radiology, Osaka Medical College, Takatsuki City, Osaka, Japan.
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16
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Shimoda M, Kanda Y, Hamamoto S, Tawaramoto K, Hashiramoto M, Matsuki M, Kaku K. The human glucagon-like peptide-1 analogue liraglutide preserves pancreatic beta cells via regulation of cell kinetics and suppression of oxidative and endoplasmic reticulum stress in a mouse model of diabetes. Diabetologia 2011; 54:1098-108. [PMID: 21340625 PMCID: PMC3071950 DOI: 10.1007/s00125-011-2069-9] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 12/22/2010] [Indexed: 01/09/2023]
Abstract
AIMS/HYPOTHESIS We investigated the molecular mechanism by which the human glucagon-like peptide-1 analogue liraglutide preserves pancreatic beta cells in diabetic db/db mice. METHODS Male db/db and m/m mice aged 10 weeks received liraglutide or vehicle for 2 days or 2 weeks. In addition to morphological and biochemical analysis of pancreatic islets, gene expression profiles in the islet core area were investigated by laser capture microdissection and real-time RT-PCR. RESULTS Liraglutide treatment for 2 weeks improved metabolic variables and insulin sensitivity in db/db mice. Liraglutide also increased glucose-stimulated insulin secretion (GSIS) and islet insulin content in both mouse strains and reduced triacylglycerol content in db/db mice. Expression of genes involved in cell differentiation and proliferation in both mouse strains was regulated by liraglutide, which, in db/db mice, downregulated genes involved in pro-apoptosis, endoplasmic reticulum (ER) stress and lipid synthesis, and upregulated genes related to anti-apoptosis and anti-oxidative stress. In the 2 day experiment, liraglutide slightly improved metabolic variables in db/db mice, but GSIS, insulin and triacylglycerol content were not affected. In db/db mice, liraglutide increased gene expression associated with cell differentiation, proliferation and anti-apoptosis, and suppressed gene expression involved in pro-apoptosis; it had no effect on genes related to oxidative stress or ER stress. Morphometric results for cell proliferation, cell apoptosis and oxidative stress in db/db mice islets were consistent with the results of the gene expression analysis. CONCLUSIONS/INTERPRETATION Liraglutide increases beta cell mass not only by directly regulating cell kinetics, but also by suppressing oxidative and ER stress, secondary to amelioration of glucolipotoxicity.
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Affiliation(s)
- M. Shimoda
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - Y. Kanda
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - S. Hamamoto
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - K. Tawaramoto
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - M. Hashiramoto
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - M. Matsuki
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
| | - K. Kaku
- Division of Diabetes, Endocrinology and Metabolism, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192 Japan
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17
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Matsukura S, Aihara M, Sugawara M, Kunimi Y, Matsuki M, Inoue Y, Kambara T, Ikezawa Z. Two cases of wheat-dependent anaphylaxis induced by aspirin administration but not by exercise. Clin Exp Dermatol 2010; 35:233-7. [DOI: 10.1111/j.1365-2230.2009.03709.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Tsuda T, Ishikawa C, Nakagawa N, Konishi H, Tarutani M, Matsuki M, Yamanishi K. A novel point mutation of keratin 17 (KRT17) in a Japanese family with pachyonychia congenita type 2: an RNA-based genetic analysis using a single hair bulb. Br J Dermatol 2008; 159:730-2. [DOI: 10.1111/j.1365-2133.2008.08684.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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19
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Yokoyama K, Matsuki M, Shimano H, Sumioka S, Ikenaga T, Hanabusa K, Yasuda S, Inoue H, Watanabe T, Miyashita M, Hiramatsu R, Murao K, Kondo A, Tanabe H, Kuroiwa T. Diffusion tensor imaging in chronic subdural hematoma: correlation between clinical signs and fractional anisotropy in the pyramidal tract. AJNR Am J Neuroradiol 2008; 29:1159-63. [PMID: 18356470 DOI: 10.3174/ajnr.a1001] [Citation(s) in RCA: 31] [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] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Diffusion tensor imaging (DTI) was introduced as a good technique to evaluate structural abnormalities in the white matter. In this study, we used DTI to examine anisotropic changes of the pyramidal tracts displaced by chronic subdural hematoma (CSDH). MATERIALS AND METHODS Twenty-six patients with unilateral CSDH underwent DTI before and after surgery. We measured fractional anisotropy (FA) values in pyramidal tracts of bilateral cerebral peduncles and calculated the ratio of the FA value on the lesion side to that on the contralateral side (FA ratio) and compared the ratios with motor weakness. Moreover, the relationships between FA ratios and clinical factors such as age, sex, midline shift, interval from trauma, and hematoma attenuation on CT were evaluated. RESULTS FA values of pyramidal tracts on the lesion side were significantly lower than those on the contralateral side (0.66 +/- 0.07 versus 0.74 +/- 0.05, P < .0001). The FA ratio was correlated to the severity of motor weakness (r(2) = 0.32, P = .002). FA ratios after surgery improved significantly compared with those before surgery (0.96 +/- 0.08 versus 0.89 +/- 0.07, P = .0004). Intervals from trauma and the midline shift were significantly associated with decreased FA ratios (P = .0008 and P = .037). CONCLUSIONS In patients with CSDH, a reversible decrease of FA in the affected pyramidal tract on DTI was correlated to motor weakness. These anisotropic changes were considered to be caused by a reversible distortion of neuron fibers and vasogenic edema due to the hematoma.
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Affiliation(s)
- K Yokoyama
- Department of Neurosurgery, Brain and Spine Surgery Center and Research Institution of Microvascular Decompression, Shiroyama Hospital, Osaka, Japan.
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20
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Ishibashi K, Okada N, Ishiguro T, Yokoyama M, Miyazaki T, Matsuki M, Sano M, Ishida H. Effect of Ca/Mg on neurotoxicity and blood concentration of platinum in patients on mFOLFOX6 therapy: A prospective randomized study. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.20639] [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: 11/20/2022] Open
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21
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Hoshino M, Hashimoto S, Muramatsu T, Matsuki M, Ogiuchi H, Shimono M. Claudin rather than occludin is essential for differentiation in rat incisor odontoblasts. Oral Dis 2008; 14:606-12. [PMID: 18208478 DOI: 10.1111/j.1601-0825.2007.01427.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)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Many morphological and developmental studies have demonstrated the characteristics of tight junctions (TJs) between odontoblasts. However, detailed localization of TJ-associated proteins in odontoblasts and their functions has not yet been clarified. To elucidate the relationship between the establishment of TJ structures and the differentiation of odontoblasts during early dentinogenesis, we studied the expression and localization of constituent proteins of TJs (claudin-1, occludin, ZO-1 and ZO-2) between odontoblasts in rat lower incisors using Western blotting, immunofluorescence and immunoelectron microscopy. When the expression of claudin-1 increases at the distal portion of mature odontoblasts, the TJs form complex networks of strands, and odontoblasts differentiated by developing distal membrane domains and by secreting specific molecules for mineralization. We conclude that the TJs of odontoblasts may play an important role in the differentiation of odontoblasts in rat lower incisors during early dentinogenesis.
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Affiliation(s)
- M Hoshino
- Department of Oral and Maxillofacial Surgery, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
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22
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Matsuki M, Inada Y, Nakai G, Tatsugami F, Tanikake M, Narabayashi I, Masuda D, Arisaka Y, Takaori K, Tanigawa N. Diffusion-weighed MR imaging of pancreatic carcinoma. ACTA ACUST UNITED AC 2008; 32:481-3. [PMID: 17431713 DOI: 10.1007/s00261-007-9192-6] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE The aim of this study was to demonstrate the feasibility of body diffusion-weighted (DW) MR imaging in the evaluation of a pancreatic carcinoma. MATERIAL AND METHODS In nine normal volunteers and in eight patients with pancreatic carcinoma, DW images were obtained on the axial plane scanning with a multisection spin-echo-type single-shot echo planar sequence with a body coil. Moreover, we measured the apparent diffusion coefficient (ADC) value in a circular region of interest (ROI) within the normal pancreas, pancreatic carcinoma, and tumor-associated chronic pancreatitis. RESULTS On the DW images, all eight carcinomas were clearly shown as high signal intensity relative to the surrounding tissue. The ADC value (x10(-3) mm(2)/s) in the carcinoma was 1.44 +/- 0.20, which was significantly lower compared to that of normal pancreas (1.90 +/- 0.06) and tumor-associated chronic pancreatitis (2.31 +/- 0.18). CONCLUSION Diffusion-weighted (DW) images can be helpful in detecting the pancreatic carcinoma and accessing the extent of the tumor.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686, Japan.
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Tatsugami F, Matsuki M, Inada Y, Nakai G, Tanikake M, Yoshikawa S, Narabayashi I. Usefulness of saline pushing in reduction of contrast material dose in abdominal CT: evaluation of time–density curve for the aorta, portal vein and liver. Br J Radiol 2007; 80:231-4. [PMID: 17038409 DOI: 10.1259/bjr/60407135] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The effects of saline pushing after contrast material injection were investigated as well as the possibility for this technique to reduce contrast material doses in liver CT examinations. 52 patients were divided randomly into three groups: 100 ml of contrast material (300 mg I ml(-1)) only (A; n = 19), 100 ml of contrast material pushed with 50 ml of saline solution (B; n = 17), and 85 ml of contrast material pushed with 50 ml of saline solution (C; n = 16). Single-level images were obtained at the level of the main portal vein after the initiation of contrast material injection. There were no significant differences in the mean peak enhancement values (PE) and the mean time to peak enhancement values (TPE) of the aorta between the three groups. The mean PE of the portal vein in group B increased 21 HU over that in group A (p<0.05), and there was no significant difference between groups A and C. The mean PE of the liver in group B increased 7 HU over that in group A (p<0.05), and there was no significant difference between groups A and C. The mean TPE of the portal vein was shorter by 4 s (p<0.05), and that of the liver was shorter by 5 s (p<0.05) in group C compared with those in group A. In conclusion, saline pushing increases the enhancement values of the portal vein and liver, and allows a contrast material dose reduction of 15 ml without decreasing hepatic and vascular enhancement at adequate scan timing.
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Affiliation(s)
- F Tatsugami
- Department of Radiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686, Japan.
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24
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Matsuki M, Kanazawa S, Kanamoto T, Inada Y, Kani H, Tanikake M, Yoshikawa S, Narabayashi I, Tatsumi Y, Nishimura H, Lee SW, Nomura E, Okuda J, Tanigawa N. Virtual CT gastrectomy by three-dimensional imaging using multidetector-row CT for laparoscopic gastrectomy. ACTA ACUST UNITED AC 2006; 31:268-76. [PMID: 16705397 DOI: 10.1007/s00261-005-0360-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- M Matsuki
- Department of Radiology, Osaka Medical College, 2-7 Daigaku-mach, Takatsuki City, Osaka Prefecture 569-8686, Japan.
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25
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Abstract
Aquaporins (AQPs) are a family of small, hydrophobic, integral membrane proteins. In mammals, they are expressed in many epithelia and endothelia and function as channels that permit water or small solutes to pass. Although the AQPs reside constitutively at the plasma membrane in most cell types, the presence of AQPs in intracellular organelles such as secretory granules and vesicles has currently been demonstrated. The secretory granules and vesicles contain secretory proteins, migrate to particular locations within the cell close to the plasma membrane and release their contents to the outside. During the process, including exocytosis, regulation of secretory granule or vesicle volume is important. This paper reviews the possible role of AQPs in secretory granules and vesicles.
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Affiliation(s)
- H Sugiya
- Department of Physiology and Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, Chiba 271-8587, Japan.
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26
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Matsuki M, Okuda J, Kanazawa S, Kanamoto T, Inada Y, Tatsugami F, Kani H, Tanikake M, Yoshikawa S, Narabayashi I, Lee SW, Tanaka K, Tanigawa N. Virtual CT colectomy by three-dimensional imaging using multidetector-row CT for laparoscopic colorectal surgery. ACTA ACUST UNITED AC 2006; 30:698-708. [PMID: 16252145 DOI: 10.1007/s00261-005-0328-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Laparoscopic colorectal surgery has been attracting attention for its capacity to improve the quality of life (QOL) of patients. However, there are disadvantages to this approach, namely, it is difficult to obtain an image of the entire view of the operative field, and organs and lesions cannot be manipulated directly by the surgeon during surgery. For this reason, it takes a relatively large amount of time to ligate vessel, which can vary between patients. Furthermore, vessels and organs can be damaged during lymph nodes dissection under laparoscopic guidance, leading to heavy bleeding that prevents the surgeon from having access to a good view of the operative field. Then, to assess preoperatively the vascular anatomy, we carried out multiphase, contrast-enhanced examinations using multidetector-row CT (MDCT) on patients with colorectal cancer, and prepared the fused image of 3D images of arteries, veins, the colorectum, organs, and tumor. We called the utilization of 3D imaging virtual CT colectomy, which contributed to rapid and safe manipulation of the origins of the arteries and the veins, as well as lymph nodes dissection, without incurring injury to the involved arteries and veins.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Osaka Medical College, Takatsuki City, Japan.
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27
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Tatsugami F, Matsuki M, Kani H, Tanikake M, Miyao M, Yoshikawa S, Narabayashi I. Effect of saline pushing after contrast material injection in abdominal multidetector computed tomography with the use of different iodine concentrations. Acta Radiol 2006; 47:192-7. [PMID: 16604967 DOI: 10.1080/02841850500479636] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE To investigate whether saline pushing after contrast material improves hepatic vascular and parenchymal enhancement, and to determine whether this technique permits decreased contrast material concentration. MATERIAL AND METHODS 120 patients who underwent hepatic multidetector computed tomography were divided randomly into four groups (Groups A-D): receiving 100 ml of contrast material (300 mgI/ml) only (A) or with 50 ml of saline solution (B); or 100 ml of contrast material (350 mgI/ml) only (C) or with 50 ml of saline solution (D). Computed tomography (CT) values of the aorta in the arterial phase, the portal vein in the portal venous inflow phase, and the liver in the hepatic phase were measured. Visualization of the hepatic artery and the portal vein by 3D CT angiography was evaluated as well. RESULTS Although the enhancement values of the aorta were not improved significantly with saline pushing, they continued at a high level to the latter slices with saline pushing. The enhancement value of the portal vein increased significantly and CT portography was improved with saline pushing. The enhancement value of the liver was not improved significantly using saline pushing. In a comparison between groups B and C, the enhancement values of the aorta and portal vein and the visualization of CT arteriography and portography were not statistically different. CONCLUSION The saline pushing technique can contribute to a decrease in contrast material concentration for 3D CT arteriography and portography.
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Affiliation(s)
- F Tatsugami
- Department of Radiology, Osaka Medical College, Takatsuki City, Osaka, Japan.
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28
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Matsuki M, Hashimoto S, Shimono M, Murakami M, Fujita-Yoshigaki J, Furuyama S, Sugiya H. Involvement of Aquaporin-5 Water Channel in Osmoregulation in Parotid Secretory Granules. J Membr Biol 2005; 203:119-26. [PMID: 15986091 DOI: 10.1007/s00232-005-0736-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [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: 08/23/2004] [Revised: 12/20/2004] [Indexed: 10/25/2022]
Abstract
Aquaporins (AQPs) are a family of channel proteins that allow water or very small solutes to pass, functioning in tissues where the rapid and regulated transport of fluid is necessary, such as the kidney, lung, and salivary glands. Aquaporin-5 (AQP5) has been demonstrated to localize on the luminal surface of the acinar cells of the salivary glands. In this paper, we investigated the expression and function of AQP5 in the secretory granules of the rat parotid gland. AQP5 was detected in the secretory granule membranes by immunoblot analysis. The immunoelectron microscopy experiments confirmed that AQP5 was to be found in the secretory granule membrane. Anti-AQP5 antibody evoked lysis of the secretory granules but anti-aquaporin-1 antibody did not and AQP1 was not detected in the secretory granule membranes by immunoblot analysis. When chloride ions were removed from the solution prepared for suspending secretory granules, the granule lysis induced by anti-AQP5 antibody was inhibited. Furthermore, 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid, an anion channel blocker, blocked the anti-AQP5 antibody-induced secretory granule lysis. These results suggest that AQP5 is, expressed in the parotid gland secretory granule membrane and is involved in osmoregulation in the secretory granules.
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Affiliation(s)
- M Matsuki
- Department of Pathology and Oral Health Science Center, Tokyo Dental College, Mihama-ku, Chiba, Japan
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Matsuda M, Kawasaki F, Inoue H, Kanda Y, Yamada K, Harada Y, Saito M, Eto M, Matsuki M, Kaku K. Possible contribution of adipocytokines on diabetic neuropathy. Diabetes Res Clin Pract 2004; 66 Suppl 1:S121-3. [PMID: 15563961 DOI: 10.1016/j.diabres.2004.05.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Neuropathy is one of the typical features of chronic complications of diabetes mellitus. Recent analyses indicate that subjects with impaired glucose tolerance (IGT) already have disturbance of peripheral nerve function. To test the role of adipocytokines, that tend to be abnormal in IGT subjects, on diabetic neuropathy, we analyzed the relationship between plasma adipocytokine levels (TNFalpha, adiponectin, and leptin) and nerve conduction velocity in 105 type 2 diabetic subjects (M/F = 66/39, age = 60.8 +/- 11.8 years, BMI = 24.7 +/- 5.0kg/m2). Adipocytokines were measured by ELISA, and motor conduction velocity (MCV) and sensory conduction velocity (SCV) in median, ulnar, and tibial nerve were measured by electrical stimulation. Motor conduction velocity and SCV were corrected by age to be 1.0 as the normal value, and the average of three nerves were used to be the representative value. Relationship between corrected MCV or corrected SCV as a dependent variable and the duration of diabetes, HbA1C, BMI, TNFalpha, adiponectin, and leptin concentrations as independent variables were analyzed by multiple regression. Duration of diabetes and HbA1C were highly related with both corrected MCV (P < 0.02 and P < 0.001) and SCV (P < 0.02 and P < 0.05) by this analysis. Only corrected SCV was related significantly with TNFalpha (P < 0.05), and close to significantly with leptin (P = 0.059) concentrations. These results indicate that increased plasma glucose levels and duration of diabetes are the major factors that modulate diabetic neuropathy. However, nerve function may be affected by plasma cytokine levels like TNFalpha, and this effect was more significant on sensory nerves than motor nerves. The present results suggest that adipocytokines may play a role not only on angiopathy but also on neuropathy in diabetics.
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Affiliation(s)
- M Matsuda
- Diabetes and Endocrine Division, Department of Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-shi, Okayama-ken 701 0192, Japan.
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Matsuda M, Kawasaki F, Yamada K, Kanda Y, Saito M, Eto M, Matsuki M, Kaku K. Impact of adiposity and plasma adipocytokines on diabetic angiopathies in Japanese Type 2 diabetic subjects. Diabet Med 2004; 21:881-8. [PMID: 15270792 DOI: 10.1111/j.1464-5491.2004.01261.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
AIMS Adipocytokines, products from adipose tissue, have biological activities on the vascular system, and may affect diabetic angiopathy. In this study, we assessed the relationship between adiposity and plasma adipocytokine levels, and investigated the clinical significance of adiposity and plasma adipocytokine levels on diabetic micro- and macroangiopathy in Type 2 diabetic subjects. METHODS We studied 231 Japanese Type 2 diabetic subjects (135 men and 96 women, aged 60.4 +/- 12.3 years, body mass index 24.8 +/- 5.2 kg/m2). We measured adipocytokine [adiponectin, leptin, resistin, and tumour necrosis factor (TNF)-alpha] levels, lipid profiles and urine albumin excretion. We also performed optic fundus examination and measured carotid intramedia thickness (IMT) using B-mode ultrasonography, and the localization of fat with abdominal computed tomography. A group of 93 subjects with microalbuminuria or overt proteinuria was compared with the other 148 to assess the effect on nephropathy. A group of 191 eyes with simple retinopathy or more advanced changes was compared with 263 eyes without retinal changes to assess the effect on retinopathy. RESULTS Plasma adiponectin level was negatively correlated with both visceral (r = -0.37, P < 0.01) and subcutaneous (r = -0.25, P < 0.01) fat areas. Resistin concentration was positively related with visceral fat area (r = 0.15, P < 0.05). Adiponectin concentration was positively correlated with age (r = 0.26, P < 0.01). TNF-alpha was correlated with IMT (r = 0.16, P < 0.05) after correction for age. Logistic regression analysis indicates a 4085 times greater chance of having retinopathy with a one unit increase in TNF-alpha (pmol/l) and a 30.64 times greater chance of having nephropathy with one unit increase in leptin (nmol/l). CONCLUSIONS The present observations suggest that visceral and subcutaneous fat has an impact on microangiopathy as well as macroangiopathy, possibly through different adipocytokines.
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Affiliation(s)
- M Matsuda
- Diabetes and Endocrine Division, Kawasaki Medical School, Kurashiki-shi, Okayama, Japan
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Shen CS, Tabata K, Matsuki M, Goto T, Yokochi T, Yamanishi K. Premature apoptosis of keratinocytes and the dysregulation of keratinization in porokeratosis. Br J Dermatol 2002; 147:498-502. [PMID: 12207590 DOI: 10.1046/j.1365-2133.2002.04853.x] [Citation(s) in RCA: 35] [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: 11/20/2022]
Abstract
BACKGROUND Porokeratosis is a dyskeratotic disorder of the skin characterized by cornoid lamella with parakeratosis, hyperkeratosis and loss of granular layers. The pathogenesis of porokeratosis and the mechanism(s) of its abnormal keratinization are still unknown. OBJECTIVE To elucidate the mechanism(s) of abnormal keratinization that leads to the formation of cornoid lamellae in porokeratosis. METHODS Apoptosis of keratinocytes was assessed in the skin of seven patients by an in situ apoptosis assay based on the terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labelling (TUNEL) reaction. Patterns of loricrin and involucrin expression were examined by immunohistochemistry. RESULTS TUNEL-positive keratinocytes were observed in the epidermis underlying the cornoid lamella in all cases examined. Furthermore, loricrin expression was interrupted there, in contrast to involucrin, which was expressed diffusely in the lesional epidermis. CONCLUSIONS These results suggest that an abnormal early keratinocyte apoptosis accompanied by dysregulation of terminal differentiation of those cells may be involved in the pathogenesis of porokeratosis.
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Affiliation(s)
- C-S Shen
- Department of Dermatology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
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Matsuki M. A short history of medicine in Muroran. (Jpn). Igakushi Kenkyu 2001; 36:300-2. [PMID: 11610585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Abstract
PURPOSE The objective of this study was to evaluate CT findings of pathologically proven intrapulmonary lymph nodes (IPLNs) and discuss the utility of thin-section CT and contrast-enhanced CT. METHOD CT findings of 18 nodules in 14 patients with pathologically proven IPLNs were reviewed. CT scanning of the whole lung was performed contiguously with slice thickness of 10 mm. In addition, a helical scan with slice thickness of 2 mm was performed in nine patients, focusing on the nodule. Contrast-enhanced helical CT was performed in four patients, and the utility of thin section CT and contrast-enhanced CT was investigated. RESULTS One patient had three nodules, 2 patients had two nodules, and the remaining 11 patients had a solitary nodule. All nodules were located below the level of the carina and within 15 mm of the pleura. In one case, conventional CT revealed the nodule 20 mm away from the pleura; however, the nodule attached to the major fissure was clearly revealed on thin-section CT. The size of the nodules was < or =15 mm, and the shape was round (n = 8), oval (n = 9), or lobulated (n = 1) with sharp border. One nodule demonstrated a spiculated border due to a surrounding pulmonary fibrosis on conventional CT; however, thin-section CT showed precisely a sharp border. The lobulated shape of one case histopathologically reflected a hilus of lymph node. On contrast-enhanced helical CT, all four nodules were enhanced and the degree enhancement was 36-85 HU (median 66.6 HU). CONCLUSION In current times, IPLNs are not uncommon lesions. We should consider IPLN in the differential diagnosis of solitary or multiple pulmonary nodules in the peripheral field and below the level of the carina. Thin-section CT showed precisely the border or relation between IPLNs and the surrounding structure. It was difficult to distinguish between IPLNs and malignant nodules from the degree of enhancement on contrast-enhanced CT. On thin-section and contrast-enhanced CT, the findings of IPLNs are not necessarily specific. Therefore, strict observation on CT is necessary; in certain cases that are increasing in size, video-assisted thoracic surgery should be considered because of their location.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Tenri Hospital, Tenri, Nara, Japan.
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Abstract
A non-contact laser flowmeter was used to measure the changing of the gingival blood flow. Five university students with healthy oral condition were selected in this study. The blood flow measurement on the extensor digitorum (above the head of third metacarpal), with the changing of distance and angle between the probe and the tissue was used as a pre-study experiment. Blood flow rate was determined in the labial gingiva (2 mm above the cervical line) of upper central incisor using a stent fixing the probe at a 3-mm distance from the tissue. A basal level of gingival blood flow was taken two times each day for 5 days. The effects of water of different temperatures on the gingival blood flow are discussed. With the changing of distance, the blood flow rate became smaller, but there was no significant effect from the angle. The reproducibility was acceptable through the 5-day measurement. After stimulating with warm and body temperature water, the blood flow first increased significantly and then went back to the basal line (faster with the body temperature water). With cold water, different reactions between the subjects were observed.
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Affiliation(s)
- M Matsuki
- Department of Prosthodontics, Asahi University School of Dentistry, Hozumi, Gifu 501-0296, Japan
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Oka H, Matsuoka H, Matsuki M, Morita T, Aga N, Motoi M. [A case of osteoclastoid type giant cell carcinoma of the pancreas]. Nihon Shokakibyo Gakkai Zasshi 2001; 98:431-5. [PMID: 11400275] [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] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- H Oka
- Department of Internal Medicine, Yashima General Hospital
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Tanikake M, Shimizu T, Yoshikawa S, Yamamoto K, Matsuki M, Masuda K, Kakuno T, Kani H, Uesugi Y, Sueyoshi K, Narabayashi I. [Three-dimensional CT angiography of the hepatic artery with multislice CT: differences in image quality according to scanning pitch]. Nihon Igaku Hoshasen Gakkai Zasshi 2001; 61:172-4. [PMID: 11321818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Three-dimensional CT angiography was reconstructed from the hepatic artery using multislice CT, and the effect of pitch during scanning on the quality of obtained images was examined. We randomly divided patients into two groups, with images of one group scanned at helical pitch 3 and images of the other at helical pitch 5.5. CT angiography was reconstructed by a volume-rendering technique. Evaluation was done visually, taking the sharpness of images of branches of the hepatic artery as a measure. Three-dimensional imaging scanned at pitch 3 tended to be better than that scanned at pitch 5.5.
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Affiliation(s)
- M Tanikake
- Department of Radiology, Osaka Medical College
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Nakamura T, Nishida K, Dota A, Matsuki M, Yamanishi K, Kinoshita S. Elevated expression of transglutaminase 1 and keratinization-related proteins in conjunctiva in severe ocular surface disease. Invest Ophthalmol Vis Sci 2001; 42:549-56. [PMID: 11222510] [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: 02/19/2023] Open
Abstract
PURPOSE In severe ocular surface diseases, pathologic keratinization of the ordinarily nonkeratinized corneal and conjunctival mucosal epithelia results in severe visual loss. The expression in conjunctivalized corneas of various proteins known to play important roles in the physiological keratinization process in human epidermis was examined to better understand the mechanism of keratinization. METHODS Conjunctiva covering the cornea was examined in 12 eyes with ocular surface disease in the chronic cicatricial phase. These comprised four Stevens-Johnson syndrome, four ocular cicatricial pemphigoid, and four chemical injuries. Normal conjunctivas from four age-matched individuals served as controls. Semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) was used to investigate transglutaminase 1 gene expression and immunohistochemistry to study the expression of transglutaminase 1 protein along with other keratinization-related proteins (involucrin, loricrin, filaggrin, and cytokeratins 1 and 10) and cytokeratin pairs 4/13 and 3/12. RESULTS Semiquantitative RT-PCR showed that transglutaminase 1 mRNA expression was upregulated in keratinized conjunctiva compared with normal. Also, in this tissue, immunohistochemistry demonstrated elevated levels of transglutaminase 1, involucrin, filaggrin, and the cytokeratin pair 1/10. Levels of loricrin and cytokeratin pairs 4/13 and 3/12, however, remained the same. CONCLUSIONS Various keratinization-related proteins, transglutaminase 1 included, are most likely involved in the pathogenesis of cicatrizing ocular surface diseases.
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Affiliation(s)
- T Nakamura
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, Kyoto 602-0841, Japan
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Inada R, Matsuki M, Yamada K, Morishima Y, Shen SC, Kuramoto N, Yasuno H, Takahashi K, Miyachi Y, Yamanishi K. Facilitated wound healing by activation of the Transglutaminase 1 gene. Am J Pathol 2000; 157:1875-82. [PMID: 11106560 PMCID: PMC1885758 DOI: 10.1016/s0002-9440(10)64826-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transglutaminase 1 (TGase 1) is a Ca(2+)-dependent enzyme which catalyzes epsilon-(gamma-glutamyl)lysine cross-linking of substrate proteins such as involucrin and loricrin to generate the cornified envelope at the cell periphery of the stratum corneum. We have shown that disruption of the TGase 1 gene in mice results in neonatal lethality, absence of the cornified envelope, and impaired skin barrier function. Based on the importance of TGase 1 in epidermal morphogenesis, we have now assessed its role in wound healing. In neonatal mouse skin, TGase 1 mRNA as well as keratin 6alpha was induced in the epidermis at the wound edges as early as 2 hours after injury and that expression continued in the migrating epidermis until completion of re-epithelialization. The TGase 1 enzyme co-localized on the plasma membrane of migrating keratinocytes with involucrin, but not with loricrin, which suggests the premature assembly of the cornified envelope. Similar injuries to TGase 1 knockout mouse skins grafted on athymic nude mice showed substantial delays in wound healing concomitant with sustained K6alpha mRNA induction. From these results, we suggest that activation of the TGase 1gene is essential for facilitated repair of skin injury.
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Affiliation(s)
- R Inada
- Department of Dermatology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
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Xu W, Humphries S, Tomita M, Okuyama T, Matsuki M, Burgner D, Kwiatkowski D, Liu L, Charles IG. Survey of the allelic frequency of a NOS2A promoter microsatellite in human populations: assessment of the NOS2A gene and predisposition to infectious disease. Nitric Oxide 2000; 4:379-83. [PMID: 10944422 DOI: 10.1006/niox.2000.0290] [Citation(s) in RCA: 40] [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: 11/22/2022]
Abstract
Allelic frequencies of a (CCTTT)(n) pentanucleotide repeat in the NOS2A promoter region were determined in a total of 1393 unrelated individuals from five specific population groups in four continents: Africa, Europe, Asia, and the Caribbean. There were highly significant differences in allele frequencies between the ethnically diverse populations. The repeat variation may have implications for the selective pressure of malaria or other infectious diseases that may operate at the NOS2 locus.
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Affiliation(s)
- W Xu
- Wolfson Institute for Biomedical Research, University College London, Cruciform Building, London, WC1E 6AU, United Kingdom.
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Abstract
Although pituitary adenoma is a benign tumour, subarachnoid dissemination occurs rarely. We describe a case of pituitary adenoma with subarachnoid dissemination. After the third operation for pituitary adenoma, an extraaxial mass was demonstrated on MR images. On T1 and T2 weighted images, the signal intensities of the extraaxial mass were similar to those of the primary pituitary adenoma. On dynamic contrast T1 weighted images, the time-intensity curve of the extraaxial mass, which showed early and persistent signal intensity, was also similar to that of the primary pituitary adenoma. These MR findings are considered to reflect the similar vascularity and stroma of the extraaxial mass and the primary pituitary adenoma.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Tenri Hospital, Nara, Japan
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Affiliation(s)
- M Matsuki
- MR Center, Tenri Hospital, 200, Mishima-cho, Tenri, Nara, 632, Japan
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Takahashi Y, Ohta S, Sano A, Kuroda Y, Kaji Y, Matsuki M, Matsuo M. Does severe nutcracker phenomenon cause pediatric chronic fatigue? Clin Nephrol 2000; 53:174-81. [PMID: 10749295] [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: 02/16/2023] Open
Abstract
BACKGROUND In the past five years we experienced 9 fatigued disabled children who were intermittently or persistently absent from school. PATIENTS They had been suspected to be burdened with psychosomatic disorders, having orthostatic hypotension, postural tachycardia, or other autonomic dysfunction symptoms. RESULTS Investigating the cause of moderate orthostatic proteinuria in some of them, we found by chance severe typical nutcracker phenomenon (NC), which was present in all 9 children complaining of chronic fatigue. CONCLUSION Their symptoms filled the criteria of chronic fatigue syndrome or idiopathic chronic fatigue (CFS/CF). An association between severe NC and autonomic dysfunction symptoms in children with CFS/CF has been presented.
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Affiliation(s)
- Y Takahashi
- Department of Pediatrics, Tenri Hospital, Nara, Japan
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Abstract
We describe the MRI findings in three cases of struma ovarii. In all three cases, MRI showed a multilocular cystic mass with a variable signal intensity within loculi. Some loculi or small cysts within septations showed low signal intensity on T1 weighted images and very low signal intensity on T2 weighted images, corresponding pathologically to gelatinous colloid material in large follicles. In one case, with Gd-DTPA enhanced T1 weighted images, the thick septations and locally thickened wall showed marked enhancement, corresponding microscopically to thyroid tissue.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Tenri Hospital, Nara, Japan
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Hiiragi T, Sasaki H, Nagafuchi A, Sabe H, Shen SC, Matsuki M, Yamanishi K, Tsukita S. Transglutaminase type 1 and its cross-linking activity are concentrated at adherens junctions in simple epithelial cells. J Biol Chem 1999; 274:34148-54. [PMID: 10567386 DOI: 10.1074/jbc.274.48.34148] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [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: 11/06/2022] Open
Abstract
Transglutaminase type 1 was identified as a tyrosine-phosphorylated protein from the isolated junctional fraction of the mouse liver. This enzyme was reported to be involved in the covalent cross-linking of proteins in keratinocytes, but its expression and activity in other cell types have not been examined. Northern blotting revealed that transglutaminase type 1 was expressed in large amounts in epithelial tissues (lung, liver, and kidney), which was also confirmed by immunoblotting with antibodies raised against mouse recombinant protein. Immunoblotting of the isolated junctional fraction revealed that transglutaminase type 1 was concentrated in the fraction not only as a 97-kDa form but also as forms of various molecular masses cross-linked to other proteins. In agreement with this finding, endogenous transglutaminase type 1 was immunofluorescently colocalized with E-cadherin in cultured simple epithelial cells. In the liver and kidney, immunoelectron microscopy revealed that transglutaminase type 1 was concentrated, albeit not exclusively, at cadherin-based adherens junctions. Furthermore, by in vitro and in vivo labeling, transglutaminase cross-linking activity was also shown to be concentrated at intercellular junctions of simple epithelial cells. These findings suggested that the formation of covalently cross-linked multimolecular complexes by transglutaminase type 1 is an important mechanism for maintenance of the structural integrity of simple epithelial cells, especially at cadherin-based adherens junctions.
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Affiliation(s)
- T Hiiragi
- Department of Cell Biology, Faculty of Medicine, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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Abstract
Female adnexal tumour of probable Wolffian origin is a rare tumour that arises from remnants of the Wolffian duct. Clinical and pathological findings of this tumour have been documented, but the MR findings have not been previously reported. We report the MRI features of an adnexal tumour of probable Wolffian origin.
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Affiliation(s)
- M Matsuki
- Department of Radiology, Tenri Hospital, Nara, Japan
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Ogasawara C, Matsuki M, Egawa T, Ohno Y, Masutani E, Yamamoto Y, Kume Y. Validation of the defining characteristics of body image disturbance in Japan. Nurs Diagn 1999; 10:15-20. [PMID: 10358520 DOI: 10.1111/j.1744-618x.1999.tb00017.x] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE To examine the validity of the nursing diagnosis body image disturbance and to specify its major and minor defining characteristics in Japanese culture. METHODS A qualified sample of 149 RNs with an average of 10 years of clinical experience and knowledge of nursing diagnosis was given a questionnaire consisting of 21 defining characteristics from NANDA, 8 additional items from the literature, and 2 distracting characteristics. FINDINGS Four major diagnostic content validation (DCV) scores of 0.75 and higher and 15 minor defining characteristics with DCV scores from 0.60 to 0.74 were identified. CONCLUSIONS This study provides a foundation for further study of culturally appropriate defining characteristics for use in Japan.
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Yoshida M, Koshiyama M, Konishi M, Fujii H, Nanno H, Hayashi M, Kanehira K, Matsuki M, Tauchi K. Ovarian dysgerminoma showing high serum levels and positive immunostaining of placental alkaline phosphatase and neuron-specific enolase associated with elevation of serum prolactin level. Eur J Obstet Gynecol Reprod Biol 1998; 81:123-8. [PMID: 9846727 DOI: 10.1016/s0301-2115(98)00162-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/28/2022]
Abstract
We report a 35-year-old Japanese female patient with ovarian dysgerminoma showing elevated serum levels of placental alkaline phosphatase (PLAP), neuron-specific enolase (NSE) and prolactin (PRL). All elevated tumor markers improved dramatically after the removal of the tumor. Immunohistochemically examined, the tumor was stained positive for PLAP and NSE and negative for PRL. Our present case is the first report of dysgerminoma showing positive immunostaining for PLAP and NSE, and the association of high serum level of PRL followed by decrease accompanied by the tumor debulking.
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Affiliation(s)
- M Yoshida
- Department of Obstetrics and Gynecology, Tenri Hospital, Nara, Japan
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48
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Matsuki M, Matsuo M, Kaji Y, Okada N. Ectopic ureter draining into seminal vesicle cyst: usefulness of MRI. Radiat Med 1998; 16:309-11. [PMID: 9814429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Ectopic ureter draining into seminal vesicle cyst is very rare congenital anomaly, which is thought to be caused by ectopic ureteral bud arising on the mesonephric duct. It is often associated with ipsilateral renal agenesis. We experienced a case of ectopic ureter draining into seminal vesicle cyst that is associated with ipsilateral renal agenesis. Generally, an invasive modality, that is, cyst puncture, cystography, or seminal vesiculography, is essential in the confirmative diagnosis of ectopic ureter. However, we could establish a definitive diagnosis with magnetic resonance imaging.
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Affiliation(s)
- M Matsuki
- MR Center, Tenri Hospital, Nara, Japan
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Matsuki M, Matsuo M, Kaji Y, Okada N. An adult case of retropharyngeal cellulitis; diagnosis by magnetic resonance imaging. Radiat Med 1998; 16:289-91. [PMID: 9814424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
We experienced an adult case of cellulitis in the prevertebral space with retropharyngeal and danger space, and, which was suspected to be due to a fish bone stuck in the throat. Its lesion could not be demonstrated on plain radiograph, postcontrast computed tomography, or laryngoscopy, but noncontrast magnetic resonance imaging demonstrated the lesion and was useful in assessing the efficacy of medication.
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Affiliation(s)
- M Matsuki
- MR Center, Tenri Hospital, Nara, Japan
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50
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Matsuki M, Okada N, Matsuo M. Case report: MR findings of Guillain-Barré syndrome. Radiat Med 1998; 16:133-5. [PMID: 9650902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Guillain-Barré syndrome (GBS) is characterized as an acute, symmetrically progressive, inflammatory demyelinating polyneuropathy. We report a case of GBS in which gadolinium-enhanced magnetic resonance (MR) imaging showed marked enhancement of nerve roots of the conus medullaris and cauda equina. On enhanced MR imaging, the spinal cord and nerve roots in the thecal sac generally do not take up much gadolinium because of the blood-nerve barrier or blood-brain barrier. Therefore, in our case, marked enhancement of nerve roots indicates a breakdown of the blood-nerve barrier. It is thought to correlate with the inflammatory infiltration of GBS.
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Affiliation(s)
- M Matsuki
- MR Center, Tenri Hospital, Nara, Japan
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