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Kimura H, Onozawa M, Yoshida S, Miyashita N, Yokoyama S, Matsukawa T, Hirabayashi S, Goto H, Endo T, Oguri S, Fujisawa S, Mori A, Kondo T, Hidaka D, Okada K, Ota S, Kakinoki Y, Tsutsumi Y, Yamamoto S, Miyagishima T, Hashiguchi J, Nagashima T, Ibata M, Wakasa K, Haseyama Y, Fujimoto K, Ishihara T, Sakai H, Teshima T. Dominant-negative type of IKZF1 deletion showed a favorable prognosis in adult B-cell acute lymphoblastic leukemia. Ann Hematol 2023; 102:3103-3113. [PMID: 37597110 DOI: 10.1007/s00277-023-05405-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/06/2023] [Indexed: 08/21/2023]
Abstract
IKZF1 deletion is a recurrent genomic alteration in B-cell acute lymphoblastic leukemia (B-ALL) and is divided into dominant-negative (DN) and loss of function (LOF) deletions. The prognostic impact of each deletion has not been fully elucidated. We retrospectively analyzed 117 patients with adult B-ALL including 60 patients with BCR::ABL1-positive B-ALL and 57 patients with BCR::ABL1-negative B-ALL by the fluorescence in situ hybridization (FISH) method for IKZF1 deletion and multiplex PCR for the 4 most common IKZF1 deletions (∆4-7, ∆2-7, ∆2-8, and ∆4-8). Samples, in which IKZF1 deletion was detected by FISH but a specific type of deletion was not identified by the PCR, were categorized as "other." Patients were classified into a DN group that had at least 1 allele of ∆4-7 (n = 23), LOF and other group (n = 40), and wildtype group (n = 54). DN type IKZF1 deletions were found in 33.3% of BCR::ABL1-positive cases and 5.2% of BCR::ABL1-negative cases. LOF and other type IKZF1 deletions were found in 43.4% of BCR::ABL1-positive cases and 24.6% of BCR::ABL1-negative cases. Patients with the DN group showed significantly higher overall survival (OS) than that of the LOF and other and WT groups (P = 0.011). Multivariate analysis including age, WBC counts, complex karyotype, and DN type IKZF1 deletion showed that the DN type of IKZF1 deletion (HR = 0.22, P = 0.013) had a positive impact and age ≥ 65 (HR = 1.92, P = 0.029) had a negative impact on OS. The prognostic impact of IKZF1 deletion depends on the type of deletion and DN type of IKZF1 deletion showed better prognosis in adult B-ALL patients.Clinical trial registration This study was part of a prospective observational study (Hokkaido Leukemia Net, UMIN000048611). It was conducted in compliance with ethical principles based on the Helsinki Declaration and was approved by the institutional review board of Hokkaido University Hospital (#015-0344).
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Affiliation(s)
- Hiroyuki Kimura
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Masahiro Onozawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan.
| | - Shota Yoshida
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Naoki Miyashita
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Shota Yokoyama
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Toshihiro Matsukawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | | | - Hideki Goto
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Tomoyuki Endo
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Satoshi Oguri
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Akio Mori
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Daisuke Hidaka
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Kohei Okada
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Shuichi Ota
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | | | - Yutaka Tsutsumi
- Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Satoshi Yamamoto
- Department of Hematology, Sapporo City General Hospital, Sapporo, Japan
| | | | - Junichi Hashiguchi
- Department of Internal Medicine, Kitami Red Cross Hospital, Kitami, Japan
| | - Takahiro Nagashima
- Department of Internal Medicine, Kitami Red Cross Hospital, Kitami, Japan
| | - Makoto Ibata
- Department of Hematology, Sapporo Kosei General Hospital, Sapporo, Japan
| | - Kentaro Wakasa
- Department of Hematology, Obihiro Kosei Hospital, Obihiro, Japan
| | | | - Katsuya Fujimoto
- Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | | | - Hajime Sakai
- Department of Hematology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
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Miyajima T, Onozawa M, Yoshida S, Miyashita N, Kimura H, Takahashi S, Yokoyama S, Matsukawa T, Goto H, Sugita J, Fujisawa S, Hidaka D, Ogasawara R, Mori A, Matsuoka S, Shigematsu A, Wakasa K, Kasahara I, Saga T, Hashiguchi J, Takeda Y, Ibata M, Yutaka T, Fujimoto K, Kondo T, Teshima T. Clinical implications of NUP98::NSD1 fusion at diagnosis in adult FLT3-ITD positive AML. Eur J Haematol 2023; 111:620-627. [PMID: 37465857 DOI: 10.1111/ejh.14055] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/20/2023]
Abstract
OBJECTIVES The cryptic fusion oncogene NUP98::NSD1 is known to be associated with FLT3-ITD mutation in acute myeloid leukemia (AML), and an independent poor prognostic factor in pediatric AML. However, there are little data regarding the clinical significance of NUP98::NSD1 in adult cohort. METHODS We conducted a multicenter retrospective study to investigate the prevalence, clinical characteristics, and prognostic impact of NUP98::NSD1 in adult FLT3-ITD-positive AML patients. RESULTS In a total of 97 FLT3-ITD-positive AML patients, six cases (6.2%) were found to harbor the NUP98::NSD1 fusion transcript. NUP98::NSD1 positive cases had significantly higher platelet counts and a higher frequency of FAB-M4 morphology than NUP98::NSD1 negative cases. NUP98::NSD1 was found to be mutually exclusive with NPM1 mutation, and was accompanied by the WT1 mutation in three of the six cases. The presence of NUP98::NSD1 fusion at the time of diagnosis predicted poor response to cytarabine-anthracycline-based intensive induction chemotherapy (induction failure rate: 83% vs. 36%, p = .038). Five of the six cases with NUP98::NSD1 underwent allogeneic hematopoietic stem cell transplantation (HSCT). Two of the five cases have successfully maintained remission, with one of them being rescued through a second HSCT. CONCLUSIONS Detecting NUP98::NSD1 in adult FLT3-ITD-positive AML is crucial to recognizing chemotherapy-resistant group.
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Affiliation(s)
- Toru Miyajima
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Masahiro Onozawa
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shota Yoshida
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Naoki Miyashita
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Hiroyuki Kimura
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shogo Takahashi
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shota Yokoyama
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Toshihiro Matsukawa
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Hideki Goto
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Junichi Sugita
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Daisuke Hidaka
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Reiki Ogasawara
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - Akio Mori
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Satomi Matsuoka
- Department of Hematology, Asahikawa City Hospital, Asahikawa, Japan
| | - Akio Shigematsu
- Department of Hematology, Kushiro Rosai Hospital, Kushiro, Japan
| | - Kentaro Wakasa
- Department of Hematology, Obihiro Kosei Hospital, Obihiro, Japan
| | - Ikumi Kasahara
- Department of Hematology, Sapporo City General Hospital, Sapporo, Japan
| | - Tomoyuki Saga
- Department of Hematology, Kin-Ikyo Chuo Hospital, Sapporo, Japan
| | - Junichi Hashiguchi
- Department of Internal Medicine/General Medicine, Kitami Red Cross Hospital, Kitami, Japan
| | - Yukari Takeda
- Department of Hematology, Tonan Hospital, Sapporo, Japan
| | - Makoto Ibata
- Department of Hematology, Sapporo Kosei General Hospital, Sapporo, Japan
| | - Tsutsumi Yutaka
- Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Katsuya Fujimoto
- Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
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Kagami K, Oyamada R, Watanabe T, Nakakubo S, Hayashi T, Iwasaki S, Fukumoto T, Usami T, Hayasaka K, Fujisawa S, Watanabe C, Nishida M, Teshima T, Niinuma Y, Yokota I, Takekuma Y, Sugawara M, Ishiguro N. Factors associated with household transmission of SARS-CoV-2 omicron variant to health care workers: A retrospective cohort study. Int J Nurs Pract 2023; 29:e13195. [PMID: 37621085 DOI: 10.1111/ijn.13195] [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: 03/21/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023]
Abstract
AIM The aim of this study was to determine the risk factors for household transmission of the omicron variant of SARS-CoV-2. BACKGROUND The household infection rate has been reported to be higher for the omicron variant than for non-omicron variants of SARS-CoV-2. Determination of the risk factors for household transmission of the omicron variant is therefore important. DESIGN A Retrospective Cohort Study was conducted. METHODS When family members of health care workers (HCWs) were found to be infected with SARS-CoV-2, the HCWs had to receive two nucleic acid amplification tests for SARS-CoV-2: immediately after and 5 to 10 days after the onset of COVID-19 in the family members. Risk factors of household transmission were analysed by comparing cases (HCWs infected with SARS-CoV-2) and controls (HCWs not infected with SARS-CoV-2) using multivariable analysis. RESULTS Unvaccinated status (OR: 3.97), age of index cases (≤6 years) (OR: 1.94) and staying at home with index cases (OR: 10.18) were risk factors for household transmission. CONCLUSION If there is a strong desire to avoid household infection, family members infected with SARS-CoV-2 should live separately during the period of viral shedding.
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Affiliation(s)
- Keisuke Kagami
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Department of Pharmacy, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Reiko Oyamada
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Tsubasa Watanabe
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Sho Nakakubo
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Department of Respiratory Medicine, Faculty of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Takahiro Hayashi
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Sumio Iwasaki
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Tatsuya Fukumoto
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Takayuki Usami
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Kasumi Hayasaka
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Chiaki Watanabe
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Hokkaido, Japan
| | - Yusuke Niinuma
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Department of Pharmacy, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Isao Yokota
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Yoh Takekuma
- Department of Pharmacy, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
| | - Mitsuru Sugawara
- Department of Pharmacy, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
- Laboratory of Pharmacokinetics, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Nobuhisa Ishiguro
- Department of Infection Control and Prevention, Hokkaido University Hospital, Sapporo, Hokkaido, Japan
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4
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Yokoyama S, Onozawa M, Yoshida S, Miyashita N, Kimura H, Takahashi S, Matsukawa T, Goto H, Fujisawa S, Miki K, Hidaka D, Hashiguchi J, Wakasa K, Ibata M, Takeda Y, Shigematsu A, Fujimoto K, Tsutsumi Y, Mori A, Ishihara T, Kakinoki Y, Kondo T, Hashimoto D, Teshima T. Subclinical minute FLT3-ITD clone can be detected in clinically FLT3-ITD-negative acute myeloid leukaemia at diagnosis. Br J Haematol 2023. [PMID: 37067758 DOI: 10.1111/bjh.18800] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/18/2023]
Abstract
Recent advances in next-generation sequencing (NGS) have enabled the detection of subclinical minute FLT3-ITD. We selected 74 newly diagnosed, cytogenetically normal acute myeloid leukaemia (AML) samples in which FLT3-ITD was not detected by gel electrophoresis. We sequenced them using NGS and found minute FLT3-ITDs in 19 cases. We compared cases with clinically relevant FLT3-ITD (n = 37), cases with minute FLT3-ITD (n = 19) and cases without detectable FLT3-ITD (n = 55). Molecular characteristics (location and length) of minute FLT3-ITD were similar to those of clinically relevant FLT3-ITD. Survival of cases with minute FLT3-ITD was similar to that of cases without detectable FLT3-ITD, whereas the relapse rate within 1 year after onset was significantly higher in cases with minute FLT3-ITD. We followed 18 relapsed samples of cases with clinically FLT3-ITD-negative at diagnosis. Two of 3 cases with minute FLT3-ITD relapsed with progression to clinically relevant FLT3-ITD. Two of 15 cases in which FLT3-ITD was not detected by NGS relapsed with the emergence of minute FLT3-ITD, and one of them showed progression to clinically relevant FLT3-ITD at the second relapse. We revealed the clonal dynamics of subclinical minute FLT3-ITD in clinically FLT3-ITD-negative AML. Minute FLT3-ITD at the initial AML can expand to become a dominant clone at relapse.
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Affiliation(s)
- Shota Yokoyama
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Masahiro Onozawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shota Yoshida
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Naoki Miyashita
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Hiroyuki Kimura
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shogo Takahashi
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Toshihiro Matsukawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Hideki Goto
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kosuke Miki
- Department of Hematology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Daisuke Hidaka
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | | | - Kentaro Wakasa
- Division of Hematology, Obihiro-Kosei General Hospital, Obihiro, Japan
| | - Makoto Ibata
- Department of Hematology, Sapporo-Kosei General Hospital, Sapporo, Japan
| | - Yukari Takeda
- Department of Hematology, Tonan Hospital, Sapporo, Japan
| | - Akio Shigematsu
- Department of Hematology, Kushiro Rosai Hospital, Kushiro, Japan
| | - Katsuya Fujimoto
- Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | - Yutaka Tsutsumi
- Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Akio Mori
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | | | | | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Daigo Hashimoto
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
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5
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Miyashita N, Onozawa M, Yoshida S, Kimura H, Takahashi S, Yokoyama S, Matsukawa T, Hirabayashi S, Fujisawa S, Mori A, Ota S, Kakinoki Y, Tsutsumi Y, Yamamoto S, Miyagishima T, Nagashima T, Ibata M, Wakasa K, Haseyama Y, Fujimoto K, Ishihara T, Sakai H, Kondo T, Teshima T. Prognostic impact of FLT3-ITD, NPM1 mutation and CEBPA bZIP domain mutation in cytogenetically normal acute myeloid leukemia: a Hokkaido Leukemia Net study. Int J Hematol 2023:10.1007/s12185-023-03567-1. [PMID: 36853451 DOI: 10.1007/s12185-023-03567-1] [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: 11/24/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 03/01/2023]
Abstract
Mutation status of FLT3, NPM1, and CEBPA is used to classify the prognosis of acute myeloid leukemia, but its significance in patients with cytogenetically normal (CN) AML is unclear. We prospectively analyzed these genes in 295 patients with CN-AML and identified 76 (25.8%) FLT3-ITD, 113 (38.3%) NPM1 mutations, and 30 (10.2%) CEBPA biallelic mutations. We found that patients with FLT3-ITD had a poor prognosis at any age, while patients with CEBPA biallelic mutation were younger and had a better prognosis. FLT3-ITD and NPM1 mutations were correlated, and the favorable prognostic impact of being FLT3-ITD negative and NPM1 mutation positive was evident only in patients aged 65 years or more. For CEBPA, 86.7% of the patients with biallelic mutation and 9.1% of patients with the single allele mutation had in-frame mutations in the bZIP domain, which were strongly associated with a favorable prognosis. Multivariate analysis showed that age < 65 years, FLT3-ITD and CEBPA bZIP in-frame mutation were independent prognostic factors. The results suggest that analyzing these gene mutations at diagnosis can inform selection of the optimal intensity of therapy for patients with CN-AML.
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Affiliation(s)
- Naoki Miyashita
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Masahiro Onozawa
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan.
| | - Shota Yoshida
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Hiroyuki Kimura
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Shogo Takahashi
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Shota Yokoyama
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Toshihiro Matsukawa
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan
| | - Shinsuke Hirabayashi
- Department of Pediatrics, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Akio Mori
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Shuichi Ota
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | | | - Yutaka Tsutsumi
- Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Satoshi Yamamoto
- Department of Hematology, Sapporo City General Hospital, Sapporo, Japan
| | | | - Takahiro Nagashima
- Department of Internal Medicine/General Medicine, Kitami Red Cross Hospital, Kitami, Japan
| | - Makoto Ibata
- Department of Hematology, Sapporo Kosei General Hospital, Sapporo, Japan
| | - Kentaro Wakasa
- Department of Hematology, Obihiro Kosei Hospital, Obihiro, Japan
| | | | - Katsuya Fujimoto
- Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | | | - Hajime Sakai
- Department of Hematology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan.,Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
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6
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Tamai M, Fujisawa S, Nguyen TTT, Komatsu C, Kagami K, Kamimoto K, Omachi K, Kasai S, Harama D, Watanabe A, Akahane K, Goi K, Naka K, Kaname T, Teshima T, Inukai T. Creation of Philadelphia chromosome by CRISPR/Cas9-mediated double cleavages on BCR and ABL1 genes as a model for initial event in leukemogenesis. Cancer Gene Ther 2023; 30:38-50. [PMID: 35999358 PMCID: PMC9842507 DOI: 10.1038/s41417-022-00522-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/27/2022] [Accepted: 08/04/2022] [Indexed: 01/21/2023]
Abstract
The Philadelphia (Ph) chromosome was the first translocation identified in leukemia. It is supposed to be generated by aberrant ligation between two DNA double-strand breaks (DSBs) at the BCR gene located on chromosome 9q34 and the ABL1 gene located on chromosome 22q11. Thus, mimicking the initiation process of translocation, we induced CRISPR/Cas9-mediated DSBs simultaneously at the breakpoints of the BCR and ABL1 genes in a granulocyte-macrophage colony-stimulating factor (GM-CSF) dependent human leukemia cell line. After transfection of two single guide RNAs (sgRNAs) targeting intron 13 of the BCR gene and intron 1 of the ABL1 gene, a factor-independent subline was obtained. In the subline, p210 BCR::ABL1 and its reciprocal ABL1::BCR fusions were generated as a result of balanced translocation corresponding to the Ph chromosome. Another set of sgRNAs targeting intron 1 of the BCR gene and intron 1 of the ABL1 gene induced a factor-independent subline expressing p190 BCR::ABL1. Both p210 and p190 BCR::ABL1 induced factor-independent growth by constitutively activating intracellular signaling pathways for transcriptional regulation of cell cycle progression and cell survival that are usually regulated by GM-CSF. These observations suggested that simultaneous DSBs at the BCR and ABL1 gene breakpoints are initiation events for oncogenesis in Ph+ leukemia. (200/200 words).
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Affiliation(s)
- Minori Tamai
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan.
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Hokkaido, Japan
| | - Thao T T Nguyen
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Chiaki Komatsu
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Keiko Kagami
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Kenji Kamimoto
- Department of Developmental Biology, Washington University School of Medicine in St. Louis, St Louis, MO, USA
| | - Kohei Omachi
- Division of Nephrology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Shin Kasai
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Daisuke Harama
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Atsushi Watanabe
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Koshi Akahane
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Kumiko Goi
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Kazuhito Naka
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Tadashi Kaname
- Department of Genome Medicine, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Hokkaido, Japan
| | - Takeshi Inukai
- Department of Pediatrics, School of Medicine, University of Yamanashi, Yamanashi, Japan
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7
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Murakami K, Iwasaki S, Oguri S, Tanaka K, Suzuki R, Hayasaka K, Fujisawa S, Watanabe C, Konno S, Yokota I, Fukuhara T, Murakami M, Teshima T. SARS-CoV-2 Omicron detection by antigen tests using saliva. J Clin Virol Plus 2022; 2:100109. [PMID: 36118305 PMCID: PMC9472459 DOI: 10.1016/j.jcvp.2022.100109] [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: 06/07/2022] [Revised: 08/29/2022] [Accepted: 09/12/2022] [Indexed: 12/02/2022] Open
Abstract
The Omicron emerged in November 2021 and became the predominant SARS-CoV-2 variant globally. It spreads more rapidly than ancestral lineages and its rapid detection is critical for the prevention of disease outbreaks. Antigen tests such as immunochromatographic assay (ICA) and chemiluminescent enzyme immunoassay (CLEIA) yield results more quickly than standard polymerase chain reaction (PCR). However, their utility for the detection of the Omicron variant remains unclear. We herein evaluated the performance of ICA and CLEIA in saliva from 51 patients with Omicron and 60 PCR negative individuals. The sensitivity and specificity of CLEIA were 98.0% (95%CI: 89.6-100.0%) and 100.0% (95%CI: 94.0-100.0%), respectively, with fine correlation with cycle threshold (Ct) values. The sensitivity and specificity of ICA were 58.8% (95%CI: 44.2-72.4%) and 100.0% (95%CI: 94.0-100.0%), respectively. The sensitivity of ICA was 100.0% (95%CI: 80.5-100.0%) when PCR Ct was less than 25. The Omicron can be efficiently detected in saliva by CLEIA. ICA also detects high viral load Omicron using saliva.
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Affiliation(s)
- Kaoru Murakami
- Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- Group of Quantum Immunology, Institute for Quantum Life Science, National Institute for Quantum and Radiological Science and Technology, Inage, Japan
| | - Sumio Iwasaki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Oguri
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kumiko Tanaka
- Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Rigel Suzuki
- Department of Microbiology and Immunology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Kasumi Hayasaka
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Chiaki Watanabe
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Isao Yokota
- Department of Biostatistics, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Masaaki Murakami
- Division of Molecular Psychoimmunology, Institute for Genetic Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- Group of Quantum Immunology, Institute for Quantum Life Science, National Institute for Quantum and Radiological Science and Technology, Inage, Japan
- Division of Molecular Neuroimmunology, National Institute for Physiological Sciences, National Institute of Natural Sciences, Okazaki, Japan Department of Biostatistics, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
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8
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Miyashita N, Onozawa M, Suto K, Fujisawa S, Okazaki N, Hidaka D, Ohigashi H, Yasumoto A, Sugita J, Hashimoto D, Matsuno Y, Teshima T. Aleukemic Extramedullary Blast Crisis as an Initial Presentation of Chronic Myeloid Leukemia with E1A3 BCR-ABL1 Fusion Transcript. Intern Med 2022; 61:1049-1054. [PMID: 34511573 PMCID: PMC9038454 DOI: 10.2169/internalmedicine.8319-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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] [Indexed: 11/25/2022] Open
Abstract
Right neck swelling and pain occurred in a 49-year-old man. A Blood count showed a slight increase in platelet count without leukemoid reaction. After a biopsy of the cervical mass and bone marrow aspiration, a diagnosis of extramedullary blast crisis (EBC) of chronic myeloid leukemia (CML) was made. Fluorescence in situ hybridization (FISH) analysis showed a BCR-ABL1 fusion signal, but results of real-time polymerase chain reaction (RT-PCR) for major and minor BCR-ABL1 transcripts were negative. We identified a rare e1a3 BCR-ABL1 fusion transcript. Administration of dasatinib resulted in disappearance of the extramedullary tumor. This is the first reported case of CML-EBC with e1a3 transcript. An aleukemic extramedullary tumor can be the initial presentation of CML.
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MESH Headings
- Blast Crisis/genetics
- Blast Crisis/pathology
- Dasatinib/therapeutic use
- Fusion Proteins, bcr-abl/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Male
- Middle Aged
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Affiliation(s)
- Naoki Miyashita
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Masahiro Onozawa
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Keito Suto
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Japan
| | - Nanase Okazaki
- Department of Surgical Pathology, Hokkaido University Hospital, Japan
| | - Daisuke Hidaka
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Hiroyuki Ohigashi
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Atsushi Yasumoto
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Junichi Sugita
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Daigo Hashimoto
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
| | - Yoshihiro Matsuno
- Department of Surgical Pathology, Hokkaido University Hospital, Japan
| | - Takanori Teshima
- Department of Hematology, Faculty of Medicine, Hokkaido University, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Japan
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9
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Mori A, Onozawa M, Hidaka D, Yokoyama S, Miyajima T, Yokoyama E, Ogasawara R, Izumiyama K, Saito M, Fujisawa S, Ota S, Kakinoki Y, Tsutsumi Y, Yamamoto S, Miyagishima T, Nagashima T, Iwasaki H, Kobayashi H, Haseyama Y, Kurosawa M, Morioka M, Teshima T, Kondo T. Non-age-related neoplastic loss of sex chromosome correlated with prolonged survival in real-world CBF-AML patients. Int J Hematol 2021; 115:188-197. [PMID: 34739701 DOI: 10.1007/s12185-021-03238-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 11/25/2022]
Abstract
In this real-world clinical study, in which we determined eligibility for allogenic hematopoietic stem cell transplantation by prognostic factors and minimal residual disease status, we retrospectively evaluated cytogenetic, genetic, and clinical features in 96 patients with core-binding factor acute myeloid leukemia (CBF-AML) including 62 patients with RUNX1/RUNX1T1 and 34 patients with CBFβ/MYH11. Multivariate analyses for 5-year overall survival (OS) in CBF-AML patients revealed that age of 50 years or older (HR: 3.46, 95% CI 1.47-8.11, P = 0.004) and receiving 2 or more induction cycles (HR: 3.55, 95% CI 1.57-8.05, P = 0.002) were independently associated with worse OS and that loss of sex chromosome (LOS) was independently associated with better OS (HR: 0.09, 95% CI 0.01-0.71, P = 0.022). At the time of complete remission, all 21 karyotyped patients with LOS had a normal karyotype. Furthermore, in all 9 patients with LOS who had a mosaic of metaphase cells with and without t(8;21) or inv(16), the metaphase cells without t(8;21)/inv(16) showed a normal karyotype. These results proved that LOS was not age-related and physiological, but rather a neoplastic chromosomal abnormality.
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Affiliation(s)
- Akio Mori
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan.
| | - Masahiro Onozawa
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Daisuke Hidaka
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Shota Yokoyama
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Toru Miyajima
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Emi Yokoyama
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Reiki Ogasawara
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Koh Izumiyama
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Makoto Saito
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shuichi Ota
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | | | - Yutaka Tsutsumi
- Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Satoshi Yamamoto
- Department of Hematology, Sapporo City General Hospital, Sapporo, Japan
| | | | - Takahiro Nagashima
- Department of Internal Medicine/General Medicine, Kitami Red Cross Hospital, Kitami, Japan
| | - Hiroshi Iwasaki
- Department of Hematology, Sapporo Kosei General Hospital, Sapporo, Japan
| | - Hajime Kobayashi
- Department of Hematology, Obihiro Kosei Hospital, Obihiro, Japan
| | | | - Mitsutoshi Kurosawa
- Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
| | - Masanobu Morioka
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
| | - Takanori Teshima
- Department of Hematology, Graduate School of Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, S4W25, Chuo-ku, Sapporo, 064-0804, Japan
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10
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Yokota I, Shane PY, Okada K, Unoki Y, Yang Y, Inao T, Sakamaki K, Iwasaki S, Hayasaka K, Sugita J, Nishida M, Fujisawa S, Teshima T. Mass Screening of Asymptomatic Persons for Severe Acute Respiratory Syndrome Coronavirus 2 Using Saliva. Clin Infect Dis 2021; 73:e559-e565. [PMID: 32976596 PMCID: PMC7543374 DOI: 10.1093/cid/ciaa1388] [Citation(s) in RCA: 112] [Impact Index Per Article: 37.3] [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: 08/13/2020] [Indexed: 02/07/2023] Open
Abstract
Background COVID-19 has rapidly evolved to become a global pandemic due largely to the transmission of its causative virus through asymptomatic carriers. Detection of SARS-CoV-2 in asymptomatic people is an urgent priority for the prevention and containment of disease outbreaks in communities. However, few data are available in asymptomatic persons regarding the accuracy of PCR testing. Additionally, although self-collected saliva has significant logistical advantages in mass screening, its utility as an alternative specimen in asymptomatic persons is yet to be determined. Methods We conducted a mass-screening study to compare the utility of nucleic acid amplification, such as reverse transcriptase polymerase chain reaction (RT-PCR) testing, using nasopharyngeal swabs (NPS) and saliva samples from each individual in two cohorts of asymptomatic persons: the contact tracing cohort and the airport quarantine cohort. Results In this mass-screening study including 1,924 individuals, the sensitivity of nucleic acid amplification testing with nasopharyngeal and saliva specimens were 86% (90%CI:77-93%) and 92% (90%CI:83-97%), respectively, with specificities greater than 99.9%. The true concordance probability between the nasopharyngeal and saliva tests was estimated at 0.998 (90%CI:0.996-0.999) on the estimated airport prevalence at 0.3%. In positive individuals, viral load was highly correlated between NPS and saliva. Conclusion Both nasopharyngeal and saliva specimens had high sensitivity and specificity. Self-collected saliva is a valuable specimen to detect SARS-CoV-2 in mass screening of asymptomatic persons.
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Affiliation(s)
- Isao Yokota
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Peter Y Shane
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan
| | - Kazufumi Okada
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yoko Unoki
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yichi Yang
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Tasuku Inao
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kentaro Sakamaki
- Center for Data Science, Yokohama City University, Yokohama, Japan
| | - Sumio Iwasaki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kasumi Hayasaka
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Junichi Sugita
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan.,Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.,Department of Hematology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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11
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Kondo T, Onozawa M, Fujisawa S, Harada S, Ogasawara R, Izumiyama K, Saito M, Morioka M, Mori A, Teshima T. Myelomonocytic differentiation of leukemic blasts accompanied by differentiation syndrome in a case of FLT3-ITD-positive AML treated with gilteritinib. ACTA ACUST UNITED AC 2021; 26:256-260. [PMID: 33631087 DOI: 10.1080/16078454.2021.1889111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 12/31/2022]
Abstract
Fms-like tyrosine kinase 3 (FLT3) is one of the most frequently mutated genes in acute myelogenous leukemia (AML) and the mutation is associated with poor prognosis of patients. Two distinct types of activating mutations have been identified in AML samples. One is internal tandem duplications in the juxtamembrane domain (FLT3-ITD) and the other is point mutations in the tyrosine kinase domain (FLT3-TKD). Gilteritinib is a FLT3 inhibitor that inhibits both FLT3-ITD and FLT3-TKD. It was reported that differentiation of leukemic blasts accompanied by differentiation syndrome occurs in some patients treated with gilteritinib. However, information about the precise clinical course is limited, and appropriate management of differentiation syndrome has not been established. We report a case of relapsed AML with FLT3-ITD that was treated with gilteritinib. Analysis of the FLT3-ITD variant allele frequency (VAF) revealed that FLT3-ITD VAF was not decreased despite achievement of complete remission with incomplete hematologic recovery. Remarkable increases of monocytes and granulocytes accompanied by differentiation syndrome were observed at 6 months after the initiation of gilteritinib treatment. Intermittent chemotherapy with low-dose cytarabine and mitoxantrone was effective for reducing myelomonocytosis and resolving differentiation syndrome.
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Affiliation(s)
- Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Masahiro Onozawa
- Department of Hematology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | | | | | - Koh Izumiyama
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Makoto Saito
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | | | - Akio Mori
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.,Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
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12
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Yokota I, Shane PY, Okada K, Unoki Y, Yang Y, Iwasaki S, Fujisawa S, Nishida M, Teshima T. A novel strategy for SARS-CoV-2 mass screening with quantitative antigen testing of saliva: a diagnostic accuracy study. Lancet Microbe 2021; 2:e397-e404. [PMID: 34031649 PMCID: PMC8133768 DOI: 10.1016/s2666-5247(21)00092-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Quantitative RT-PCR (RT-qPCR) of nasopharyngeal swab (NPS) samples for SARS-CoV-2 detection requires medical personnel and is time consuming, and thus is poorly suited to mass screening. In June, 2020, a chemiluminescent enzyme immunoassay (CLEIA; Lumipulse G SARS-CoV-2 Ag kit, Fujirebio, Tokyo, Japan) was developed that can detect SARS-CoV-2 nucleoproteins in NPS or saliva samples within 35 min. In this study, we assessed the utility of CLEIA in mass SARS-CoV-2 screening. Methods We did a diagnostic accuracy study to develop a mass-screening strategy for salivary detection of SARS-CoV-2 by CLEIA, enrolling hospitalised patients with clinically confirmed COVID-19, close contacts identified at community health centres, and asymptomatic international arrivals at two airports, all based in Japan. All test participants were enrolled consecutively. We assessed the diagnostic accuracy of CLEIA compared with RT-qPCR, estimated according to concordance (Kendall's coefficient of concordance, W), and sensitivity (probability of CLEIA positivity given RT-qPCR positivity) and specificity (probability of CLEIA negativity given RT-qPCR negativity) for different antigen concentration cutoffs (0·19 pg/mL, 0·67 pg/mL, and 4·00 pg/mL; with samples considered positive if the antigen concentration was equal to or more than the cutoff and negative if it was less than the cutoff). We also assessed a two-step testing strategy post hoc with CLEIA as an initial test, using separate antigen cutoff values for test negativity and positivity from the predefined cutoff values. The proportion of intermediate results requiring secondary RT-qPCR was then quantified assuming prevalence values of RT-qPCR positivity in the overall tested population of 10%, 30%, and 50%. Findings Self-collected saliva was obtained from 2056 participants between June 12 and Aug 6, 2020. Results of CLEIA and RT-qPCR were concordant in 2020 (98·2%) samples (Kendall's W=0·99). Test sensitivity was 85·4% (76 of 89 positive samples; 90% credible interval [CrI] 78·0-90·3) at the cutoff of 0·19 pg/mL; 76·4% (68 of 89; 68·2-82·8) at the cutoff of 0·67 pg/mL; and 52·8% (47 of 89; 44·1-61·3) at the cutoff of 4·0 pg/mL. Test specificity was 91·3% (1796 of 1967 negative samples; 90% CrI 90·2-92·3) at the cutoff of 0·19 pg/mL, 99·2% (1952 of 1967; 98·8-99·5) at the cutoff of 0·67 pg/mL, and 100·0% (1967 of 1967; 99·8-100·0) at the cutoff of 4·00 pg/mL. Using a two-step testing strategy with a CLEIA negativity cutoff of 0·19 pg/mL (to maximise sensitivity) and a CLEIA positivity cutoff of 4·00 pg/mL (to maximise specificity), the proportions of indeterminate results (ie, samples requiring secondary RT-qPCR) would be approximately 11% assuming a prevalence of RT-qPCR positivity of 10%, 16% assuming a prevalence of RT-qPCR positivity of 30%, and 21% assuming a prevalence of RT-qPCR positivity of 50%. Interpretation CLEIA testing of self-collected saliva is simple and provides results quickly, and is thus suitable for mass testing. To improve accuracy, we propose a two-step screening strategy with an initial CLEIA test followed by confirmatory RT-qPCR for intermediate concentrations, varying positive and negative thresholds depending on local prevalence. Implementation of this strategy has expedited sample processing at Japanese airports since July, 2020, and might apply to other large-scale mass screening initiatives. Funding Ministry of Health, Labour and Welfare, Japan.
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Affiliation(s)
- Isao Yokota
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Peter Y Shane
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan
| | - Kazufumi Okada
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yoko Unoki
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Yichi Yang
- Department of Biostatistics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Sumio Iwasaki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan.,Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.,Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
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13
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Oguri S, Fujisawa S, Kamada K, Nakakubo S, Yamashita Y, Nakamura J, Horii H, Sato K, Nishida M, Teshima T, Ohiro Y, Takada A, Konno S. Effect of varying storage conditions on diagnostic test outcomes of SARS-CoV-2. J Infect 2021; 83:119-145. [PMID: 33823203 PMCID: PMC8018904 DOI: 10.1016/j.jinf.2021.03.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Satoshi Oguri
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Keisuke Kamada
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan; Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan.
| | - Sho Nakakubo
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yu Yamashita
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Junichi Nakamura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Horii
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kazuki Sato
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan; Department of Hematology, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Yoichi Ohiro
- Department of Oral and Maxillofacial Surgery, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - Ayato Takada
- Division of Global Epidemiology, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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14
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Yokota I, Hattori T, Shane PY, Konno S, Nagasaka A, Takeyabu K, Fujisawa S, Nishida M, Teshima T. Equivalent SARS-CoV-2 viral loads by PCR between nasopharyngeal swab and saliva in symptomatic patients. Sci Rep 2021; 11:4500. [PMID: 33627730 PMCID: PMC7904914 DOI: 10.1038/s41598-021-84059-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [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: 10/06/2020] [Accepted: 02/11/2021] [Indexed: 12/25/2022] Open
Abstract
Emerging evidences have shown the utility of saliva for the detection of SARS-CoV-2 by PCR as alternative to nasopharyngeal swab (NPS). However, conflicting results have been reported regarding viral loads between NPS and saliva. We conducted a study to compare the viral loads between NPS and saliva in 42 COVID-19 patients. Viral loads were estimated by the cycle threshold (Ct) values. SARS-CoV-2 was detected in 34 (81%) using NPS with median Ct value of 27.4, and 38 (90%) using saliva with median Ct value of 28.9 (P = 0.79). Kendall's W was 0.82, showing a high degree of agreement, indicating equivalent viral loads in NPS and saliva. After symptom onset, the Ct values of both NPS and saliva continued to increase over time, with no substantial difference. Self-collected saliva has a detection sensitivity comparable to that of NPS and is a useful diagnostic tool with mitigating uncomfortable process and the risk of aerosol transmission to healthcare workers.
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Affiliation(s)
- Isao Yokota
- Department of Biostatistics, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Takeshi Hattori
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Medical Center, Sapporo, Japan
| | - Peter Y Shane
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Atsushi Nagasaka
- Department of Infectious Diseases, Sapporo City General Hospital, Sapporo, Japan
| | - Kimihiro Takeyabu
- Department of Respiratory Medicine, Otaru Kyokai Hospital, Otaru, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- International Medical Department, Hokkaido University Hospital, Sapporo, Japan. .,Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. .,Department of Hematology, Hokkaido University Faculty of Medicine, N15 W7, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan.
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15
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Taki K, Yokota I, Fukumoto T, Iwasaki S, Fujisawa S, Takahashi M, Negishi S, Hayasaka K, Sato K, Oguri S, Nishida M, Sugita J, Konno S, Saito T, Teshima T. SARS-CoV-2 detection by fluorescence loop-mediated isothermal amplification with and without RNA extraction. J Infect Chemother 2020; 27:410-412. [PMID: 33214073 PMCID: PMC7604111 DOI: 10.1016/j.jiac.2020.10.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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] [Received: 09/17/2020] [Revised: 10/24/2020] [Accepted: 10/28/2020] [Indexed: 12/01/2022]
Abstract
Rapid and simple point-of-care detection of SARS-CoV-2 is an urgent need to prevent pandemic. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) can detect SARS-CoV-2 more rapidly than RT-PCR. Saliva is non-invasive specimen suitable for mass-screening, but data comparing utility of nasopharyngeal swab (NPS) and saliva in RT-LAMP test are lacking and it remains unclear whether SARS-CoV-2 could be detected by direct processing of samples without the need for prior RNA extraction saliva. In this study, we compared utility of saliva and NPS samples for the detection of SARS-CoV-2 by a novel RT-fluorescence LAMP (RT-fLAMP). The sensitivity and specificity of the RT-fLAMP with RNA extraction were 97% and 100%, respectively, with equivalent utility of NPS and saliva. However, sensitivity was decreased to 71% and 47% in NPS and saliva samples without RNA extraction, respectively, suggesting that RNA extraction process may be critical for the virus detection by RT-fLAMP.
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Affiliation(s)
- Keisuke Taki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Isao Yokota
- Department of Biostatistics, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Tatsuya Fukumoto
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Sumio Iwasaki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Masayoshi Takahashi
- Molecular Testing Solutions Business Development Department, Canon Medical Systems Corporation, Otawara, Japan
| | - Saeki Negishi
- Molecular Testing Solutions Business Development Department, Canon Medical Systems Corporation, Otawara, Japan
| | - Kasumi Hayasaka
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kaori Sato
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Oguri
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Junichi Sugita
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Tomoya Saito
- Department of Health Crisis Management, National Institute of Public Health, Saitama, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan; Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan.
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16
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Hattori T, Amishima M, Morinaga D, Kamada K, Nakakubo S, Yamashita Y, Shichinohe Y, Fujisawa S, Nishida M, Nasuhara Y, Teshima T, Konno S. Older age is associated with sustained detection of SARS-CoV-2 in nasopharyngeal swab samples. J Infect 2020; 82:159-198. [PMID: 32579989 PMCID: PMC7306199 DOI: 10.1016/j.jinf.2020.06.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Takeshi Hattori
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Medical Center, Sapporo Japan; Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan
| | - Masaru Amishima
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Medical Center, Sapporo Japan
| | - Daisuke Morinaga
- Department of Respiratory Medicine, National Hospital Organization Hokkaido Medical Center, Sapporo Japan
| | - Keisuke Kamada
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan
| | - Sho Nakakubo
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan
| | - Yu Yamashita
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan
| | - Yasuo Shichinohe
- Department of Emergency and Critical Care Medicine, National Hospital Organization Hokkaido Medical Center, Sapporo Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo Japan
| | - Yasuyuki Nasuhara
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan; Division of Hospital Safety Management, Hokkaido University Hospital, Sapporo Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo Japan; Department of Hematology, Hokkaido University Faculty of medicine, Sapporo Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo Japan.
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17
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Iwasaki S, Fujisawa S, Nakakubo S, Kamada K, Yamashita Y, Fukumoto T, Sato K, Oguri S, Taki K, Senjo H, Sugita J, Hayasaka K, Konno S, Nishida M, Teshima T. Comparison of SARS-CoV-2 detection in nasopharyngeal swab and saliva. J Infect 2020; 81:e145-e147. [PMID: 32504740 PMCID: PMC7270800 DOI: 10.1016/j.jinf.2020.05.071] [Citation(s) in RCA: 166] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 05/30/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Sumio Iwasaki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Shinichi Fujisawa
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Sho Nakakubo
- Department of Respiratory Medicine, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Keisuke Kamada
- Department of Respiratory Medicine, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Yu Yamashita
- Department of Respiratory Medicine, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Tatsuya Fukumoto
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kaori Sato
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Oguri
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Keisuke Taki
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Hajime Senjo
- Department of Hematology, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Junichi Sugita
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Kasumi Hayasaka
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Hokkaido University Faculty of medicine, Sapporo, Japan
| | - Mutsumi Nishida
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan; Department of Hematology, Hokkaido University Faculty of medicine, Sapporo, Japan.
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18
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Kondo T, Fujioka M, Fujisawa S, Sato K, Tsuda M, Miyagishima T, Mori A, Iwasaki H, Kakinoki Y, Yamamoto S, Haseyama Y, Ando S, Shindo M, Ota S, Kurosawa M, Ohba Y, Teshima T. Clinical efficacy and safety of first-line nilotinib therapy and evaluation of the clinical utility of the FRET-based drug sensitivity test. Int J Hematol 2019; 110:482-489. [DOI: 10.1007/s12185-019-02696-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 11/28/2022]
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19
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Hidaka D, Onozawa M, Hashiguchi J, Miyashita N, Kasahara K, Fujisawa S, Hayase E, Okada K, Shiratori S, Goto H, Sugita J, Nakagawa M, Hashimoto D, Kahata K, Endo T, Yamamoto S, Tsutsumi Y, Haseyama Y, Nagashima T, Mori A, Ota S, Sakai H, Ishihara T, Imai K, Miyagishima T, Kakinoki Y, Kurosawa M, Kobayashi H, Iwasaki H, Shimizu C, Kondo T, Teshima T. Wilms Tumor 1 Expression at Diagnosis Correlates With Genetic Abnormalities and Polymorphism But Is Not Independently Prognostic in Acute Myelogenous Leukemia: A Hokkaido Leukemia Net Study. Clinical Lymphoma Myeloma and Leukemia 2018; 18:e469-e479. [DOI: 10.1016/j.clml.2018.07.291] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/07/2018] [Accepted: 07/11/2018] [Indexed: 01/29/2023]
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20
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Hashiguchi J, Onozawa M, Oguri S, Fujisawa S, Tsuji M, Okada K, Nakagawa M, Hashimoto D, Kahata K, Kondo T, Shimizu C, Teshima T. Development of a Fluorescence in Situ Hybridization Probe for Detecting IKZF1 Deletion Mutations in Patients with Acute Lymphoblastic Leukemia. J Mol Diagn 2018; 20:446-454. [DOI: 10.1016/j.jmoldx.2018.02.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 02/26/2018] [Accepted: 02/27/2018] [Indexed: 10/28/2022] Open
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21
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Togasaki E, Takeda J, Yoshida K, Shiozawa Y, Takeuchi M, Oshima M, Saraya A, Iwama A, Yokote K, Sakaida E, Hirase C, Takeshita A, Imai K, Okumura H, Morishita Y, Usui N, Takahashi N, Fujisawa S, Shiraishi Y, Chiba K, Tanaka H, Kiyoi H, Ohnishi K, Ohtake S, Asou N, Kobayashi Y, Miyazaki Y, Miyano S, Ogawa S, Matsumura I, Nakaseko C, Naoe T. Frequent somatic mutations in epigenetic regulators in newly diagnosed chronic myeloid leukemia. Blood Cancer J 2017; 7:e559. [PMID: 28452984 PMCID: PMC5436079 DOI: 10.1038/bcj.2017.36] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 02/17/2017] [Accepted: 03/06/2017] [Indexed: 01/30/2023] Open
Abstract
Although tyrosine kinase inhibitors (TKIs) have significantly improved the prognosis of chronic myeloid leukemia (CML), the ability of TKIs to eradicate CML remains uncertain and patients must continue TKI therapy for indefinite periods. In this study, we performed whole-exome sequencing to identify somatic mutations in 24 patients with newly diagnosed chronic phase CML who were registered in the JALSG CML212 study. We identified 191 somatic mutations other than the BCR-ABL1 fusion gene (median 8, range 1–17). Age, hemoglobin concentration and white blood cell counts were correlated with the number of mutations. Patients with mutations ⩾6 showed higher rate of achieving major molecular response than those<6 (P=0.0381). Mutations in epigenetic regulator, ASXL1, TET2, TET3, KDM1A and MSH6 were found in 25% of patients. TET2 or TET3, AKT1 and RUNX1 were mutated in one patient each. ASXL1 was mutated within exon 12 in three cases. Mutated genes were significantly enriched with cell signaling and cell division pathways. Furthermore, DNA copy number analysis showed that 2 of 24 patients had uniparental disomy of chromosome 1p or 3q, which disappeared major molecular response was achieved. These mutations may play significant roles in CML pathogenesis in addition to the strong driver mutation BCR-ABL1.
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Affiliation(s)
- E Togasaki
- Department of Hematology, Chiba University Hospital, Chiba, Japan
| | - J Takeda
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Shiozawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Takeuchi
- Department of Hematology, Chiba University Hospital, Chiba, Japan
| | - M Oshima
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - A Saraya
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - A Iwama
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - K Yokote
- Department of Clinical Cell Biology and Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - E Sakaida
- Department of Hematology, Chiba University Hospital, Chiba, Japan
| | - C Hirase
- Department of Hematology and Rheumatology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - A Takeshita
- Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - K Imai
- Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - H Okumura
- Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Y Morishita
- Department of Hematology and Oncology, JA Aichi Konan Kosei Hospital, Konan, Japan
| | - N Usui
- Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University Daisan Hospital, Tokyo, Japan
| | - N Takahashi
- Department of Hematology, Nephrology and Rheumatology, Akita University Graduate School of Medicine, Akita, Japan
| | - S Fujisawa
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - Y Shiraishi
- Laboratory of DNA Information Analysis, Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Chiba
- Laboratory of DNA Information Analysis, Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Tanaka
- Laboratory of DNA Information Analysis, Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Ohnishi
- Japanese Red Cross Aichi Blood Center, Seto, Japan
| | - S Ohtake
- Department of Clinical Laboratory Science, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - N Asou
- Department of Hemato-Oncology, Comprehensive Cancer Center, International Medical Center, Saitama Medical University, Saitama, Japan
| | - Y Kobayashi
- Division of Hematology, National Cancer Center Hospital, Tokyo, Japan
| | - Y Miyazaki
- Department of Hematology and Molecular Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Laboratory of Sequence Analysis, Human Genome Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - I Matsumura
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - C Nakaseko
- Department of Hematology, Chiba University Hospital, Chiba, Japan
| | - T Naoe
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,National Hospital Organization Nagoya Medical Center, Nagoya, Japan
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22
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Koyama S, Fujisawa S, Watanabe R, Itabashi M, Ishibashi D, Ishii Y, Hattori Y, Nakajima Y, Motohashi K, Takasaki H, Kawasaki R, Hashimoto C, Yamazaki E, Koharazawa H, Takemura S, Tomita N, Sakai R, Motomura S, Nakajima H. Serum ferritin level is a prognostic marker in patients with peripheral T-cell lymphoma. Int J Lab Hematol 2016; 39:112-117. [PMID: 27885817 DOI: 10.1111/ijlh.12592] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/10/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The prognostic value of serum ferritin level in patients with peripheral T-cell lymphoma (PTCL) remains unknown. METHODS We retrospectively analyzed clinical data from 78 consecutive patients with newly diagnosed PTCL that were treated with anthracycline-containing regimens between 1998 and 2011. RESULTS The patients consisted of 50 males and 28 females with a median age of 64 years (range, 16-83 years). The subtypes of PTCL were 39 PTCL, not otherwise specified and 39 angioimmunoblastic T-cell lymphoma (AITL). The median observation period for the surviving patients was 50 months. The overall survival (OS) was poorer in patients with serum ferritin level above the upper normal limit (n = 28), compared with patients with serum ferritin level within normal range (n = 50; 4-year OS: 23% vs. 72%; P < 0.001). In the multivariate analysis, poor performance status (P = 0.006) and elevated serum ferritin level (P = 0.018) were independent risk factors for poor OS. CONCLUSION Serum ferritin level is a useful prognostic marker for PTCL.
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Affiliation(s)
- S Koyama
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - S Fujisawa
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - R Watanabe
- Department of Medical Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - M Itabashi
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - D Ishibashi
- Department of Hematology, Saiseikai Yokohama Nanbu Hospital, Yokohama, Japan
| | - Y Ishii
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Hattori
- Department of Medical Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - Y Nakajima
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - K Motohashi
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - H Takasaki
- Department of Medical Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - R Kawasaki
- Department of Hematology/Immunology, Fujisawa City Hospital, Fujisawa, Japan
| | - C Hashimoto
- Department of Hematology, Yamato Municipal Hospital, Yamato, Japan
| | - E Yamazaki
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Koharazawa
- Department of Hematology, Yamato Municipal Hospital, Yamato, Japan
| | - S Takemura
- Department of Internal Medicine, Yokohama Ekisaikai Hospital, Yokohama, Japan
| | - N Tomita
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - R Sakai
- Department of Medical Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - S Motomura
- Department of Medical Oncology, Kanagawa Cancer Center, Yokohama, Japan
| | - H Nakajima
- Department of Stem Cell and Immune Regulation, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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23
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Fanchon L, Russell J, Dogan S, Carlin S, Pinker-Domenig K, Yorke E, Schmidtlein CR, Fujisawa S, Manova-Todorova K, Zanzonico P, Deasy JO, Humm JL, Solomon S, Kirov AS. SU-F-J-07: Evaluating the Adequacy of Biopsy Specimens for Genetic Signature Assessment by Measuring the Metabolic Activity in Specimens Obtained Under 18F-FDG PET/CT Guidance. Med Phys 2016. [DOI: 10.1118/1.4955915] [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: 11/07/2022] Open
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24
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Numata A, Itabashi M, Kishimoto K, Motohashi K, Hagihara M, Kuwabara H, Tanaka M, Kato H, Chiba S, Kunisaki R, Fujisawa S. Intestinal amoebiasis in a patient with acute graft-versus-host disease after allogeneic bone marrow transplantation successfully treated by metronidazole. Transpl Infect Dis 2015; 17:886-9. [PMID: 26426525 DOI: 10.1111/tid.12460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/27/2015] [Accepted: 09/12/2015] [Indexed: 11/28/2022]
Abstract
Amoebiasis has rarely been reported in patients undergoing hematopoietic stem cell transplantation, although it is a world-wide infection and extremely common. We present a case of intestinal amoebiasis unexpectedly revealed by colonoscopy after allogeneic bone marrow transplantation from a human leukocyte antigen-mismatched unrelated donor for acute myeloid leukemia arising from chronic myelomonocytic leukemia and successfully treated by metronidazole.
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Affiliation(s)
- A Numata
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - M Itabashi
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - K Kishimoto
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - K Motohashi
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - M Hagihara
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - H Kuwabara
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - M Tanaka
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
| | - H Kato
- Infection Control Department, Yokohama City University Medical Center, Yokohama, Japan
| | - S Chiba
- Department of Pathology, Yokohama City University Medical Center, Yokohama, Japan
| | - R Kunisaki
- Inflammatory Bowel Disease Center, Yokohama City University Medical Center, Yokohama, Japan
| | - S Fujisawa
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan
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Yano S, Mori T, Kanda Y, Kato J, Nakaseko C, Fujisawa S, Tomita N, Sakai R, Shono K, Saitoh T, Aotsuka N, Kobayashi N, Saito T, Takahashi S, Kanamori H, Okamoto S. Favorable survival after allogeneic stem cell transplantation with reduced-intensity conditioning regimens for relapsed/refractory follicular lymphoma. Bone Marrow Transplant 2015; 50:1299-305. [DOI: 10.1038/bmt.2015.158] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 05/12/2015] [Accepted: 05/26/2015] [Indexed: 11/09/2022]
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Hongo M, Fujisawa S, Adachi T, Shimbo T, Shibata S, Ohba T, Ono K. 1110. Age-related effects of dexmedetomidine, an alpha-2 agonist, on coronary vasoactivity and cardiac function in guinea-pig hearts. Intensive Care Med Exp 2014. [PMCID: PMC4796847 DOI: 10.1186/2197-425x-2-s1-p89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Nakajima Y, Hattori Y, Ito S, Ohshima R, Kuwabara H, Machida S, Shirasugi Y, Miyazaki K, Sakai R, Tomita N, Ando K, Higashihara M, Ishigatsubo Y, Fujisawa S. Acute leukemia during pregnancy: an investigative survey of the past 11 years. Int J Lab Hematol 2014; 37:174-80. [DOI: 10.1111/ijlh.12256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 04/13/2014] [Indexed: 12/21/2022]
Affiliation(s)
- Y. Nakajima
- Department of Hematology; Yokohama City University Medical Center; Yokohama Japan
| | - Y. Hattori
- Department of Hematology and Rheumatology; Fujisawa City Hospital; Yokohama Japan
| | - S. Ito
- Department of Internal Medicine and Clinical Immunology, Yokohama City University; Graduate School of Medicine; Yokohama Japan
| | - R. Ohshima
- Department of Hematology; Yokohama City University Medical Center; Yokohama Japan
| | - H. Kuwabara
- Department of Hematology; Yokohama City University Medical Center; Yokohama Japan
| | - S. Machida
- Department of Hematology-Oncology; Tokai University; Isehara Japan
| | - Y. Shirasugi
- Department of Hematology-Oncology; Tokai University; Isehara Japan
| | - K. Miyazaki
- Department of Hematology; Kitasato University School of Medicine; Sagamihara Japan
| | - R. Sakai
- Department of Hematology; Yokohama City University Medical Center; Yokohama Japan
| | - N. Tomita
- Department of Internal Medicine and Clinical Immunology, Yokohama City University; Graduate School of Medicine; Yokohama Japan
| | - K. Ando
- Department of Hematology-Oncology; Tokai University; Isehara Japan
| | - M. Higashihara
- Department of Hematology; Kitasato University School of Medicine; Sagamihara Japan
| | - Y. Ishigatsubo
- Department of Internal Medicine and Clinical Immunology, Yokohama City University; Graduate School of Medicine; Yokohama Japan
| | - S. Fujisawa
- Department of Hematology; Yokohama City University Medical Center; Yokohama Japan
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Fujisawa S, Kadoma Y. Relationship Between Phenol-Induced Cytotoxicity and Experimental Inhibition Rate Constant or a Theoretical Parameter. Mini Rev Med Chem 2012; 12:477-90. [DOI: 10.2174/138955712800493816] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 11/03/2011] [Accepted: 11/15/2011] [Indexed: 11/22/2022]
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Watanabe R, Tomita N, Matsumoto C, Hattori Y, Matsuura S, Takasaki H, Hashimoto C, Fujita H, Fujisawa S, Ishigatsubo Y. Prognostic value of the 3q27 and 18q21 translocations for diffuse large B-cell lymphoma and follicular lymphoma in the rituximab era. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e18513] [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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Onozawa M, Ohmura K, Ibata M, Iwasaki J, Okada K, Kasahara I, Yamaguchi K, Kubota K, Fujisawa S, Shigematsu A, Endo T, Kondo T, Hashino S, Tanaka J, Matsuno Y, Asaka M, Imamura M. The 8p11 myeloproliferative syndrome owing to rare FGFR1OP2-FGFR1 fusion. Eur J Haematol 2011; 86:347-9. [DOI: 10.1111/j.1600-0609.2010.01568.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [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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Shiratori S, Kondo T, Fujisawa S, Kubota K, Kosugi M, Shono Y, Sugita J, Fujimoto K, Nishio M, Tanaka J, Koike T, Matsuno Y, Matsuno K, Asaka M, Imamura M. c-myc rearrangement in B-cell lymphoblastic lymphoma with the involvement of multiple extranodal lesions. Leuk Lymphoma 2011; 52:716-8. [DOI: 10.3109/10428194.2010.551158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Sakai R, Kanamori H, Nakaseko C, Yoshiba F, Fujimaki K, Sakura T, Fujisawa S, Kawai N, Onoda M, Matsushima T, Maruta A, Sakamaki H, Okamoto S. Air-leak syndrome following allo-SCT in adult patients: report from the Kanto Study Group for Cell Therapy in Japan. Bone Marrow Transplant 2010; 46:379-84. [DOI: 10.1038/bmt.2010.129] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nakasone H, Kanda Y, Takasaki H, Nakaseko C, Sakura T, Fujisawa S, Yokota A, Yano S, Usuki K, Maruta A, Abe D, Hoshino T, Takahashi S, Kanamori H, Okamoto S. Prophylactic impact of imatinib administration after allogeneic stem cell transplantation on the incidence and severity of chronic graft versus host disease in patients with Philadelphia chromosome-positive leukemia. Leukemia 2010; 24:1236-9. [PMID: 20428195 DOI: 10.1038/leu.2010.83] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Iwasa T, Matsuzaki T, Murakami M, Fujisawa S, Kinouchi R, Gereltsetseg G, Kuwahara A, Yasui T, Irahara M. Effects of intrauterine undernutrition on hypothalamic Kiss1 expression and the timing of puberty in female rats. J Physiol 2010; 588:821-9. [PMID: 20083512 DOI: 10.1113/jphysiol.2009.183558] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Recent studies have suggested that intrauterine undernutrition is closely associated with the pathogenesis of diseases after birth. Perinatal undernutrition is known to disturb the development of reproductive function and delay the onset of puberty in some species. Using a rat model, we determined the effects of prenatal undernutrition on the development of the hypothalamic kisspeptin system and evaluated whether the alteration of the kisspeptin system contributes to the delayed onset of puberty induced by prenatal undernutrition. We also evaluated the effects of prenatal undernutrition on the developmental changes in serum leptin levels because leptin was a putative positive regulator of the hypothalamic kisspeptin system. We compared the timing of vaginal opening (VO) and the developmental changes in body weight, hypothalamic Kiss1 mRNA levels, and serum leptin concentrations between offspring with prenatal undernutrition (UN offspring) and normal nutrition (NN offspring). After birth, the UN offspring showed rapid growth and had caught up to body weight of the NN offspring by postnatal day 12. After postnatal day 16, the UN offspring showed significantly lower Kiss1 mRNA levels than the NN offspring, despite their significantly higher serum leptin levels (at days 20 and 28). The timing of VO in the UN offspring was delayed compared with that in the NN offspring, and chronic central injection of kisspeptin normalized the timing of VO in the UN offspring. These results suggest that decreased hypothalamic kisspeptin action contributes to the delayed onset of puberty in prenatally undernourished female rats. Increased leptin resistance in the kisspeptin system might be involved in these alterations.
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Affiliation(s)
- T Iwasa
- Department of Obstetrics and Gynecology, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima 770-8503, Japan.
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Kurosawa M, Toda H, Maruyama H, Fujisawa S, Budgell B. P9.4 Effects of noxious cutaneous mechanical stimulation on dorsal spinal cord blood flow in anesthetized rats. Auton Neurosci 2009. [DOI: 10.1016/j.autneu.2009.05.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fujisawa S, Atsumi T, Kadoma Y. CYTOTOXICITY AND PHOSPHOLIPID-LIPOSOME PHASE-TRANSITION PROPERTIES OF 2-HYDROXYETHYL METHACRYLATE (HEMA). ACTA ACUST UNITED AC 2009; 29:245-61. [PMID: 11358040 DOI: 10.1081/bio-100103048] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [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: 11/03/2022]
Abstract
To elucidate the cytotoxic induction mechanisms of the hydrophilic HEMA, the comparative cytotoxic activities of HEMA and the hydrophobic monomers TEGDMA and MMA were studied, using erythrocytes, gingival fibroblasts and a salivary gland carcinoma cell line. Also, the gel-to-fluid phase transition properties (i.e. temperature, Tm; cooperativity, H/HHW; enthalpy, deltaH) of dipalmitoylphosphatidylcholine (DPPC) and DPPC/cholesterol (CS) liposomes (as a model for biological membranes) induced by methacrylates were investigated, using differential scanning calorimetry (DSC). In addition, the methacrylate-chemical-shifts in DPPC liposomes were assayed using NMR spectroscopy. Both the hemo lytic and cytotoxic activity declined in the order: TEGDMA> HEMA>MMA. The changes in Tm increased in the order: HEMA <MMA<TEGDMA. The H/HHW declined in the order of MMA >>TEGDMA, while in contrast, that of HEMA was slightly increased without changes in the deltaH. The DSC changes in DPPC/CS liposomes with HEMA were the largest of those recorded. The cytotoxicity of HEMA may be induced by the hydrophobic interaction derived from the molecular association of OH groups of HEMA and, in addition, by the preferential interaction with CS.
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Affiliation(s)
- S Fujisawa
- Department of Oral Diagnosis, Meikai University School of Dentistry, Saitama, Japan
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Abstract
OBJECTIVE AND DESIGN Free radicals/reactive oxygen species (ROS) are related to inflammation, aging, and cancer. However, living systems have essential antioxidant mechanisms by which these harmful radicals can be scavenged, i.e., free radical-scavenging activity (FRSA). We measured the circadian rhythm of such activities by detecting salivary FRSA in healthy adults, and also examined how salivary FRSA is affected by physical and mental activities, which included (1) ingestion of beverage, (2) exercise, (3) comfortable/uncomfortable stimulation, and (4) smoking. METHODS FRSA was determined by using the DPPH (1,1'-diphenyl-2-picrylhydrazyl) method. Statistical analysis for experimentally obtained median values was carried out using the Wilcoxon signed rank test. RESULTS In circadian rhythm, FRSA was increased by food ingestion and relaxation. As to the individual activities, green tea and coffee ingestion increased FRSA, whereas swimming (P < 0.05) and dance lessons (P < 0.01) decreased it. Watching an amusing video program (P < 0.001) or stimulation by a pleasant aroma (P < 0.01) increased FRSA. In contrast, an unpleasant odor had no effect on FRSA. FRSA decreased immediately after smoking (P < 0.05), but increased thereafter (P < 0.01). CONCLUSION Salivary FRSA was affected not only by physical activities, but also by mental activities. It may be a parameter for reflecting the health status of individuals.
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Affiliation(s)
- T Atsumi
- Department of Human Development & Fostering, Meikai University School of Dentistry, Saitama, Japan
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Tomita N, Kodama F, Motomura S, Itoh S, Ohshima R, Hyo R, Kawano T, Hashimoto C, Takemura S, Yamazaki E, Fujita H, Fujisawa S, Ogawa K, Kanamori H, Ishigatsubo Y. Adjuvant radiotherapy to an initial bulky mass in diffuse large B-cell lymphoma: lack of survival benefit. Int J Lab Hematol 2008; 30:53-7. [PMID: 18190468 DOI: 10.1111/j.1751-553x.2007.00900.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The role of adjuvant radiotherapy to the site of the initial bulky mass in lymphoma remains to be determined. We retrospectively analyzed clinical data for 35 consecutive patients with diffuse large B-cell lymphoma who had an initial bulky mass were treated successfully by chemotherapy reaching complete remission or complete remission unconfirmed according to International Workshop Criteria. Median age was 57 years. Median follow-up period for surviving patients after completion of chemotherapy was 45 months. Twenty patients (group A) received adjuvant radiotherapy to the bulky mass, while 15 (group B) did not. Median dose of radiation in group A was 40 Gy (range, 30-60 Gy). In group A, four relapses occurred, all from other sites; group B included three relapses from bulky and one from other sites. Overall survival (P = 0.15) and recurrence-free survival (P = 0.48) did not differ significantly between groups. Although adjuvant radiotherapy to the initial bulky site is useful for controlling local disease, no survival benefit was seen.
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Affiliation(s)
- N Tomita
- Department of Hematology, Yokohama City University Medical Center, Yokohama, Japan.
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Sakamaki H, Ishizawa K, Taniwaki M, Fujisawa S, Morishima Y, Tobinai K, Okada M, Ando K, Ueda K, Ohno R. Dasatinib phase I/II study of patients with chronic myeloid leukemia (CML) resistant or intolerant to imatinib: Results of the CA180031 study in Japan. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.17515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
17515 Background: Dasatinib is a potent, orally active, multi-targeted kinase inhibitor of BCR-ABL and SRC family kinases. Studies outside Japan have shown dasatinib to be highly effective in overcoming resistance and intolerance to imatinib, inducing durable cytogenetic (CyR) and hematologic responses (HR) in this population. The maximum tolerated dose was not reached in the Phase-I trial outside Japan and a 70-mg BID dose was determined to provide the optimal benefit-risk profile. Methods: This Phase-I/-II study was designed to assess the safety and efficacy of dasatinib in Japanese patients with imatinib-resistant or -intolerant CML or Ph+ALL. In the 4-week Phase-I portion in patients with chronic-phase (CP) CML, three dose levels were evaluated: 50 mg, 70 mg, and 90 mg BID. The Phase-II portion is currently evaluating the CyR of dasatinib in patients with CP-CML at 24 weeks, and the HR rate in accelerated- (AP) or blast-phase (BP) CML and Ph+ ALL at 12 weeks. Results: As of December 2006, 17 eligible patients have been treated in Phase I. Six patients (4F, 2M; median age 43 y [range 27–56]) were treated with 50 mg BID and 1 dose-limiting toxicity (DLT) was observed (Grade 4 thrombocytopenia). Two patients experienced transient Grade 3 ALT elevations but as treatment was uninterrupted, these were not considered DLTs. Six patients (6M; median age 42 y [range 27–55]) were treated with 70 mg BID and again 1 DLT was observed (Grade 4 thrombocytopenia). No DLT has been observed among 4 patients (3M, 1F; median age 41 y [range 27–64]) at the 90-mg BID dose. Major CyRs have been achieved in all three cohorts in the Phase-I segment of the trial. Thirty six patients were enrolled and treated in the Phase-II part of the trial (12 CP-CML, 7 AP- CML, 4 BP-CML, and 13 Ph+ALL). Efficacy and safety data as well as the baseline BCR-ABL mutation data are currently being assessed and will be presented. Conclusions: Dasatinib can be safely administered at doses of up to 90 mg BID to Japanese patients with imatinib-resistant or -intolerant CP-CML. No significant financial relationships to disclose.
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Affiliation(s)
- H. Sakamaki
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - K. Ishizawa
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - M. Taniwaki
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - S. Fujisawa
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - Y. Morishima
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - K. Tobinai
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - M. Okada
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - K. Ando
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - K. Ueda
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
| | - R. Ohno
- Metropolitan Komagome Hospital, Tokyo, Japan; Tohoku University, Sendai, Japan; Kyoto Prefectural Medical University, Kyoto, Japan; Yokohama City University Medical Center, Yokohama, Japan; Aichi Cancer Center, Nagoya, Japan; National Cancer Center, Tokyo, Japan; Hyogo Medical University, Kobe, Japan; Tokai University, Kanagawa, Japan; Bristol-Myers Squibb, Tokyo, Japan; Aichi Shukutoku University, Aichi, Japan
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Atsumi T, Fujisawa S, Tonosaki K. (Meth)acrylate monomer-induced cytotoxicity and intracellular Ca2+ mobilization in human salivary gland carcinoma cells and human gingival fibroblast cells related to monomer hydrophobicity. Biomaterials 2006; 27:5794-800. [PMID: 16934868 DOI: 10.1016/j.biomaterials.2006.07.041] [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] [Received: 04/30/2006] [Accepted: 07/31/2006] [Indexed: 11/28/2022]
Abstract
To elucidate a possible link between the cytotoxicity and Ca(2+) mobilization by (meth)acrylates, we investigated the cell survival of and change in [Ca(2+)](i) in human salivary gland (HSG) cells (salivary gland carcinoma cell line) and human gingival fibroblasts (HGF) cells treated separately with 9 (meth)acrylate monomers used in dentistry. The cell survival was determined by the MTT method, and the [Ca(2+)](i) changes after the stimulation with the (meth)acrylate monomers were measured in floating indo-1/AM-loaded cells in Ca(2+)-free medium. For both HSG and HGF cells, the cytotoxicity of the monomers was approximately proportional to their hydrophobicity (logP). No increase in [Ca(2+)](i) was found with hydrophilic monomers, even with 10mm stimulation. [Ca(2+)](i) elevation by hydrophobic monomers occurred in a dose- and hydrophobic-dependent manner. The [Ca(2+)](i) change in HSG cells appeared as twin peaks, i.e., an initial sharp peak followed by a delayed broad one; whereas with the HGF cells only a single broad peak was seen, possibly dependent on their membrane quality. Pretreatment with n-butanol or methylmethacrylate enhanced the butylmethacrylate-induced [Ca(2+)](i) elevation, suggesting the [Ca(2+)](i) elevation by (meth)acrylate may be related to monomer hydrophobicity and cell type. The causal link between the cytotoxicity and [Ca(2+)](i) mobilization of monomers is discussed.
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Affiliation(s)
- Toshiko Atsumi
- Department of Oral Physiology, Meikai University, School of Dentistry, 1-1, Keyakidai, Sakado, Saitama 350 0283, Japan.
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Fujisawa S, Shirao T, Aoki C. In vivo, competitive blockade of N-methyl-D-aspartate receptors induces rapid changes in filamentous actin and drebrin A distributions within dendritic spines of adult rat cortex. Neuroscience 2006; 140:1177-87. [PMID: 16650941 PMCID: PMC2844451 DOI: 10.1016/j.neuroscience.2006.03.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Accepted: 03/06/2006] [Indexed: 10/24/2022]
Abstract
In vitro studies have demonstrated that prolonged N-methyl-D-aspartate receptor (NMDAR) blockade triggers a homeostatic up-regulation of NMDARs at synapses. Such upregulation can also be seen within 30 min in vivo in adult rats, implicating trafficking of reserve pools of NMDARs. Here, we evaluated the involvement of filamentous actin (F-actin), the major cytoskeletal component in spines, in this rapid in vivo homeostatic response, using biotinylated phalloidin as its probe. We also immuno-labeled spines for drebrin A, an F-actin-binding protein found at excitatory synapses and with a proposed role of modulating F-actin's cross-linking with one another and interactions with NMDARs. Quantitative 2-D analysis of ultrastructural images revealed that NMDAR blockade increased filamentous actin labeling per spine by 62.5% (P<0.005). The proportion of dendritic spines immuno-labeled for drebrin A also increased significantly, from 67.5% to 85% following NMDAR blockade (P<0.001), especially among larger spines. The frequency distributions of spine widths and postsynaptic density lengths were not affected by the D-(+)-2-amino-5-phosphonopentanoic acid (D-APV) treatment. However, the average postsynaptic density length was reduced by 25 nm among the fewer, drebrin A immuno-negative spines, indicating that drebrin A confers stability to synapse size. We propose that, in a homeostatic in vivo response, increases of drebrin A and F-actin within spines can enhance NMDAR trafficking by reducing cytoskeletal rigidity within the spine cytoplasm without changing the overt morphology of axo-spinous synapses. Alternatively or in addition, the cytoskeletal redistribution within spine cytoplasm may be triggered by the D-APV-induced, homeostatic up-regulation of NMDAR.
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Affiliation(s)
- S Fujisawa
- Center for Neural Science, New York University, 4 Washington Place #809, New York, NY 10003, USA.
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Sakai R, Fujisawa S, Fujimaki K, Kanamori H, Ishigatsubo Y. Long-term remission in a patient with hepatosplenic γδ T cell lymphoma after cord blood stem cell transplantation following autologous peripheral blood stem cell transplantation. Bone Marrow Transplant 2006; 37:537-8. [PMID: 16415891 DOI: 10.1038/sj.bmt.1705272] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kojima R, Kami M, Kanda Y, Kusumi E, Kishi Y, Tanaka Y, Yoshioka S, Morishima S, Fujisawa S, Mori SI, Kasai M, Hatanaka K, Tajima K, Kasai M, Mitani K, Ichinohe T, Hirai H, Taniguchi S, Sakamaki H, Harada M, Takaue Y. Comparison between reduced intensity and conventional myeloablative allogeneic stem-cell transplantation in patients with hematologic malignancies aged between 50 and 59 years. Bone Marrow Transplant 2005; 36:667-74. [PMID: 16113674 DOI: 10.1038/sj.bmt.1705122] [Citation(s) in RCA: 24] [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: 11/09/2022]
Abstract
To evaluate the efficacy of reduced-intensity stem-cell transplantation (RIST), we retrospectively compared outcomes of 207 consecutive Japanese patients aged between 50 and 59 years with hematologic malignancies who received RIST (n=70) and conventional stem-cell transplantation (CST) (n=137). CST recipients received total body irradiation (TBI)-based or busulfan/cyclophosphamide-based regimens. RIST regimens were purine analog-based (n=67), 2 Gy TBI-based (n=2), and others (n=1). Most CST recipients (129/137) received calcineurin inhibitors and methotrexate as graft-versus-host (GVHD) prophylaxis, while 32 RIST recipients received cyclosporin. In all, 23 CST and five RIST recipients died without disease progression within 100 days of transplant. Grade II to IV acute GVHD occurred in 56 CST and 38 RIST recipients. There was no significant difference in overall survival (OS) and progression-free survival between CST and RIST. On multivariate analysis on OS, five variables were significant: preparative regimens (CST vs RIST) (hazard ratio=1.92, 95% confidence interval, 1.25-2.97; P=0.003), performance status (2-4 vs 0-1) (2.50, 1.51-4.16; P<0.001), risk of underlying diseases (1.85, 1.21-2.83; P=0.004), acute GVHD (2.57, 1.72-3.84; P<0.001), and CML (0.38, 0.21-0.69; P=0.002). We should be careful in interpreting results of this small-sized retrospective study; however, reduced regimen-related toxicity might contribute to better survival in RIST. The low relapse rates following RIST suggest a strong antitumor activity through allogeneic immunity.
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Affiliation(s)
- R Kojima
- Hematopoietic Stem Cell Transplantation Unit, the National Cancer Center Hospital, and Department of Cell Therapy & Transplantation Medicine, University of Tokyo, Japan
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Atsumi T, Fujisawa S, Tonosaki K. Relationship between intracellular ROS production and membrane mobility in curcumin- and tetrahydrocurcumin-treated human gingival fibroblasts and human submandibular gland carcinoma cells. Oral Dis 2005; 11:236-42. [PMID: 15984955 DOI: 10.1111/j.1601-0825.2005.01067.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [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: 11/28/2022]
Abstract
OBJECTIVE Curcumin is a well-known chemopreventive agent of oral cancers as well as stomach and intestinal cancers. The relationship between reactive oxygen species (ROS) production and cell membrane mobility was investigated to clarify the pro-oxidant mechanism of curcumin and tetrahydrocurcumin (TH-curcumin). METHODS The intracellular ROS production and membrane mobility by curcumin or TH-curcumin were measured in human submandibular adenocarcinoma cells (HSGs) and human primary gingival fibroblasts (HGFs). ROS and mobility were measured by 5-(and -6)-carboxy-2',7'-dichlorofluorescein diacetate staining and fluorescence recovery after photo bleaching, respectively. RESULTS Curcumin produced ROS dose-dependently. ROS appeared in the region surrounding the cell membrane. The membrane mobility coefficient of the curcumin-treated cells was significantly lower than that of control cells. The lowered membrane mobility induced by curcumin was reversed by the addition of glutathione, an antioxidant. In contrast, TH-curcumin did not affect the ROS production or the membrane mobility coefficient. The alternations induced by curcumin treated HSG cells were greater than those by HGF cells. CONCLUSION The reduction in membrane mobility induced by curcumin was attributed to ROS production. The oxidative effects of curcumin may be related to the structure of the alpha, beta-unsaturated carbonyl moiety as well as the phenolic OH group of this compound.
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Affiliation(s)
- T Atsumi
- Department of Oral Physiology, Meikai University School of Dentistry, Keyakidai, Sakado-shi, Saitama, Japan.
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Atsumi T, Fujisawa S, Tonosaki K. A comparative study of the antioxidant/prooxidant activities of eugenol and isoeugenol with various concentrations and oxidation conditions. Toxicol In Vitro 2005; 19:1025-33. [PMID: 15964168 DOI: 10.1016/j.tiv.2005.04.012] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2004] [Revised: 04/23/2005] [Accepted: 04/25/2005] [Indexed: 11/20/2022]
Abstract
Eugenol (compound in , 4-allyl-2-methyoxyphenol) and isoeugenol (compound in , 4-propenyl-2-methoxyphenol), both used as a flavor agent in cosmetic and food products, have both prooxidant and antioxidant activities. Their adverse effects such as allergic and inflammatory reaction may be due to their prooxidant activity. To clarify the mechanisms of their cytotoxicity and the factors affecting their antioxidant/prooxidant activities, we investigated the cytotoxicity, ROS production, and cellular glutathione (GSH) levels induced by eugenol and isoeugenol in a human submandibular cell line. The cytotoxicity (MTT method) of eugenol was 1 order of magnitude lower than that of isoeugenol (CC50: eugenol, 0.395 mM; isoeugenol, 0.0523 mM); and ROS production (CDF staining) was induced significantly by isoeugenol, but not by eugenol. Under treatment with H2O2 (100 microM) plus horseradish peroxidase (1 microg/ml) for 30 min or with visible light irradiation for 5 min, eugenol caused biphasic ROS production characterized by enhanced at lower eugenol concentrations (5-10 microM) and decreased at higher concentrations (500 microM). In contrast, isoeugenol enhanced ROS production over a wide range of concentrations (5-500 microM). Isoeugenol at 1000 microM significantly reduced GSH levels compared with eugenol at the same concentration. The high cytotoxicity of isoeugenol may be attributed to its induction of high ROS production and low GSH levels, possibly as a result of benzyl radical formation. In contrast, the cytotoxicity of eugenol is likely to be mediated by ROS-independent mechanisms, possibly involving phenoxyl radicals and/or eugenol quinone methide.
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Affiliation(s)
- T Atsumi
- Department of Oral Physiology, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado-shi, Saitama 350-0283, Japan.
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Hashimoto C, Kodama F, Motomura S, Tomita N, Fujisawa S, Fujita H, Sakai R, Ogawa K, Kanamori H, Ishigatsubo Y. Long-term outcomes of patients with aggressive non-Hodgkin’s lymphoma treated with ACOMP-B/ML-Y9 regimen. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.6604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- C. Hashimoto
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - F. Kodama
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - S. Motomura
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - N. Tomita
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - S. Fujisawa
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - H. Fujita
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - R. Sakai
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - K. Ogawa
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - H. Kanamori
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
| | - Y. Ishigatsubo
- Kanagawa Cancer Ctr, Yokohama, Japan; Yokohama City Univ Medcl Ctr, Yokohama, Japan; Shizuoka Red-Cross Hosp, Shizuoka, Japan; Fujisawa City Hosp, Fujisawa, Japan; Yokosuka City Hosp, Yokosuka, Japan; Yokohama City Univ Sch of Medicine, Yokohama, Japan
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Atsumi T, Ishihara M, Kadoma Y, Tonosaki K, Fujisawa S. Comparative radical production and cytotoxicity induced by camphorquinone and 9-fluorenone against human pulp fibroblasts. J Oral Rehabil 2004; 31:1155-64. [PMID: 15544650 DOI: 10.1111/j.1365-2842.2004.01357.x] [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] [Indexed: 11/27/2022]
Abstract
Camphorquinone (CQ) is widely used as a photo-initiator in dental materials; however, its cytotoxicity against human pulp fibroblasts (HPF) and particularly the effects of 2-dimethylaminoethyl methacrylate (DMA), a reducing agent and visible light (VL) irradiation on it remain unknown. So we investigated the cytotoxic and reactive oxygen species (ROS)-producing effects of CQ with or without DMA, in the presence or absence of VL on HPF cells. The free-radical production activity of CQ was measured by two different methods [using diphenylpicryl hydrazyl and galvinoxyl]. The phase-transition properties of dipalmitoylphosphatidyl choline (DPPC) liposomes, as a model for biomembranes, induced by CQ were investigated by differential scanning calorimetry. These findings were compared with those of 9-fluorenone (9F), an aromatic photo-initiator with long conjugated groups. Camphorquinone with VL irradiation increased the radical production, whereas 9F with VL irradiation increased ROS production, as well as effecting changes in the DPPC phase-transition properties. The cytotoxicity of CQ towards HPF cells was smaller than that of 9F despite greater radical production. The addition of DMA to the photosensitizer enhanced the free-radical production without increasing the ROS level or the cytotoxicity. Camphorquinone/DMA is a valuable combination for the polymerization of dental resins.
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Affiliation(s)
- T Atsumi
- Department of Oral Physiology, Mekai University School of Dentistry, Sakado, Saitama, Japan.
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Fujimaki K, Taguchi J, Fujita H, Hattori M, Yamazaki E, Takahashi N, Fujisawa S, Kanamori H, Maruta A, Ishigatsubo Y. Thiotepa/cyclophosphamide/TBI as a conditioning regimen for allogeneic hematopoietic stem cell transplantation in patients with myelodysplastic syndrome. Bone Marrow Transplant 2004; 33:789-92. [PMID: 15064685 DOI: 10.1038/sj.bmt.1704451] [Citation(s) in RCA: 10] [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: 11/09/2022]
Abstract
In all, 18 patients (30-56 years; median 49) with MDS underwent allogeneic HSCT from related (n=12) or unrelated (n=6) donors after a conditioning regimen comprising thiotepa, cyclophosphamide, and TBI. GVHD prophylaxis consisted of cyclosporine (n=15) or tacrolimus (n=3) with short-course methotrexate. Four patients had low-risk disease (refractory anemia or complete remission after chemotherapy) and 14 patients had high-risk disease (RAEB, RAEB-t, or AML). Grade II-IV acute GVHD developed in six patients and chronic GVHD in 10. With a median follow-up of 31 months, the 2-year survival probability is 75% for low-risk patients and 57% for high-risk patients. One patient died of leukemia and six of treatment-related causes. This conditioning regimen requires further study in patients with MDS.
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Affiliation(s)
- K Fujimaki
- First Department of Internal Medicine, Yokohama City University School of Medicine, Yokohama, Japan.
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Atsumi T, Fujisawa S, Nakabayashi Y, Kawarai T, Yasui T, Tonosaki K. Pleasant feeling from watching a comical video enhances free radical-scavenging capacity in human whole saliva. J Psychosom Res 2004; 56:377-9. [PMID: 15046977 DOI: 10.1016/s0022-3999(03)00064-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2002] [Accepted: 03/04/2003] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Free radicals have been implicated in aging, mutagenesis, inflammation and other pathological conditions. We conducted a study to clarify the relation between a pleasant feeling as a psychological eustress and free radical-scavenging capacity (FRSC) in saliva. METHODS Saliva was collected from 27 healthy volunteers. FRSC before, during and after watching a cheerful comical video for 30 min was measured by using 1,1-diphenyl-2-picrylhydrazyl (DPPH). RESULTS The median values of FRSC (micromol/ml) before, at 10 and 20 min during and after watching the video were 54.5, 66.8, 66.6 and 69.4, respectively. The FRSC values obtained after watching the video were significantly higher than those before watching it (P<.001). When the FRSC before watching was taken as 1, the value for the group that felt "Very good," "Good" or "Ordinary+Dull" while watching the video for 30 min was 1.38, 1.20 or 0.98, respectively (P<.01). CONCLUSION Watching a comical video enhanced the FRSC in saliva; in addition, a pleasant feeling boosted it even more.
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Affiliation(s)
- T Atsumi
- Department of Oral Physiology, Meikai University School of Dentistry, 1-1, Keyakidai, Sakado, Saitama 350-0283, Japan.
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Abstract
To clarify the non-enzymatic radical-scavenging activity of beta-carotene-related compounds and other polyenes, we used differential scanning calorimetry to study the kinetics of radical polymerization of methyl methacrylate (MMA) by 2,2'-azobisisobutyronitrile (AIBN) or benzoyl peroxide (BPO) in the absence or presence of polyenes under nearly anaerobic conditions at 70 degrees C, and analyzed the results with an SAR approach. The polyenes studied were all-trans retinol, retinol palmitate, calciferol, beta-carotene and lycopene. Polyenes produced a small induction period. The stoichiometric factor (n) (i.e. the number of radicals trapped by each inhibitor molecule) of polyenes was close to 0. Tetraterpenes (beta-carotene, lycopene) suppressed significantly more of the initial rate of polymerization (R(inh)) than did diterpenes (retinol, retinol palmitate). The inhibition rate constants (k(inh)) for the reaction of beta-carotene with AIBN- or BPO-derived radicals were determined to be 1.2-1.6x10(5) l/mol s, similar to published values. A linear relationship between (k(inh)) and the kinetic chain length (KCL) for polyenes was observed; as (k(inh)) increased, KCL decreased. KCL also decreased significantly as the number of conjugated double bonds in the polyenes increased. Polyenes, particularly beta-carotene and lycopene, acted as interceptors of growing poly-MMA radicals.
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Affiliation(s)
- S Fujisawa
- Department of Oral Diagnosis, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado, Saitama 350-0283, Japan.
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