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Opler M, Negash S, Tatsumi K, Liu C, Komaroff M, Capodilupo G, Hasebe M, Echevarria B, Blattner R, Citrome L. Use of a novel study insight analytics (SIA) methodology to improve PANSS data quality and signal detection in a global clinical trial in schizophrenia. Schizophr Res 2024; 267:239-246. [PMID: 38581826 DOI: 10.1016/j.schres.2024.03.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 02/29/2024] [Accepted: 03/31/2024] [Indexed: 04/08/2024]
Affiliation(s)
- M Opler
- WCG Inc., New York, NY, USA.
| | | | | | - C Liu
- WCG Inc., New York, NY, USA
| | - M Komaroff
- Noven Pharmaceuticals, Inc., Jersey City, NJ, USA
| | | | - M Hasebe
- Hisamitsu Pharmaceutical Co., Inc., Tosu, Japan
| | | | | | - L Citrome
- New York Medical College, New York, NY, USA
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Mizote Y, Inoue T, Akazawa T, Kunimasa K, Tamiya M, Kumamoto Y, Tsuda A, Yoshida S, Tatsumi K, Ekawa T, Honma K, Nishino K, Tahara H. Potent CTLs can be induced against tumor cells in an environment of lower levels of systemic MFG-E8. Cancer Sci 2024; 115:1114-1128. [PMID: 38332689 PMCID: PMC11007000 DOI: 10.1111/cas.16099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 12/19/2023] [Accepted: 01/22/2024] [Indexed: 02/10/2024] Open
Abstract
The direction and magnitude of immune responses are critically affected when dead cells are disposed of. Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) promotes the engulfment of apoptotic normal and cancerous cells without inducing inflammation. We have previously reported that a certain proportion of the cancer cells express abundant MFG-E8, and that such expression is associated with the shorter survival of patients with esophageal cancer who had received chemotherapy before surgery. However, the influence of tumor-derived and systemically existing MFG-E8 on antitumor immune responses has not yet been fully investigated. Herein, we showed that CTL-dependent antitumor immune responses were observed in mice with no or decreased levels of systemic MFG-E8, and that such responses were enhanced further with the administration of anti-PD-1 antibody. In mice with decreased levels of systemic MFG-E8, the dominance of regulatory T cells in tumor-infiltrating lymphocytes was inverted to CD8+ T cell dominance. MFG-E8 expression by tumor cells appears to affect antitumor immune responses only when the level of systemic MFG-E8 is lower than the physiological status. We have also demonstrated in the clinical setting that lower levels of plasma MFG-E8, but not MFG-E8 expression in tumor cells, before the treatment was associated with objective responses to anti-PD-1 therapy in patients with non-small cell lung cancer. These results suggest that systemic MFG-E8 plays a critical role during the immunological initiation process of antigen-presenting cells to increase tumor-specific CTLs. Regulation of the systemic level of MFG-E8 might induce efficient antitumor immune responses and enhance the potency of anti-PD-1 therapy.
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Affiliation(s)
- Yu Mizote
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Takako Inoue
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Takashi Akazawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Kei Kunimasa
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Motohiro Tamiya
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Yachiyo Kumamoto
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Arisa Tsuda
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Satomi Yoshida
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Kumiko Tatsumi
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Tomoya Ekawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Keiichiro Honma
- Department of Diagnostic Pathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Kazumi Nishino
- Department of Thoracic OncologyOsaka International Cancer InstituteOsakaJapan
| | - Hideaki Tahara
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
- Project Division of Cancer Biomolecular Therapy, The Institute of Medical ScienceThe University of TokyoTokyoJapan
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Tatsumi K, Wada H, Hasegawa S, Asukai K, Nagata S, Ekawa T, Akazawa T, Mizote Y, Okumura S, Okamura R, Ohue M, Obama K, Tahara H. Prediction for oxaliplatin-induced liver injury using patient-derived liver organoids. Cancer Med 2024; 13:e7042. [PMID: 38400666 PMCID: PMC10891453 DOI: 10.1002/cam4.7042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 01/22/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Liver injury associated with oxaliplatin (L-OHP)-based chemotherapy can significantly impact the treatment outcomes of patients with colorectal cancer liver metastases, especially when combined with surgery. To date, no definitive biomarker that can predict the risk of liver injury has been identified. This study aimed to investigate whether organoids can be used as tools to predict the risk of liver injury. METHODS We examined the relationship between the clinical signs of L-OHP-induced liver injury and the responses of patient-derived liver organoids in vitro. Organoids were established from noncancerous liver tissues obtained from 10 patients who underwent L-OHP-based chemotherapy and hepatectomy for colorectal cancer. RESULTS Organoids cultured in a galactose differentiation medium, which can activate the mitochondria of organoids, showed sensitivity to L-OHP cytotoxicity, which was significantly related to clinical liver toxicity induced by L-OHP treatment. Organoids from patients who presented with a high-grade liver injury to the L-OHP regimen showed an obvious increase in mitochondrial superoxide levels and a significant decrease in mitochondrial membrane potential with L-OHP exposure. L-OHP-induced mitochondrial oxidative stress was not observed in the organoids from patients with low-grade liver injury. CONCLUSIONS These results suggested that L-OHP-induced liver injury may be caused by mitochondrial oxidative damage. Furthermore, patient-derived liver organoids may be used to assess susceptibility to L-OHP-induced liver injury in individual patients.
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Affiliation(s)
- Kumiko Tatsumi
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
- Department of Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Hiroshi Wada
- Department of Gastroenterological SurgeryOsaka International Cancer InstituteOsakaJapan
| | - Shinichiro Hasegawa
- Department of Gastroenterological SurgeryOsaka International Cancer InstituteOsakaJapan
| | - Kei Asukai
- Department of Gastroenterological SurgeryOsaka International Cancer InstituteOsakaJapan
| | - Shigenori Nagata
- Department of Diagnostic Pathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Tomoya Ekawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Takashi Akazawa
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Yu Mizote
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
| | - Shintaro Okumura
- Department of Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Ryosuke Okamura
- Department of Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Masayuki Ohue
- Department of Gastroenterological SurgeryOsaka International Cancer InstituteOsakaJapan
| | - Kazutaka Obama
- Department of Surgery, Graduate School of MedicineKyoto UniversityKyotoJapan
| | - Hideaki Tahara
- Department of Cancer Drug Discovery and Development, Research CenterOsaka International Cancer InstituteOsakaJapan
- Project Division of Cancer Biomolecular TherapyThe Institute of Medical Science, The University of TokyoTokyoJapan
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Iwami N, Komiya S, Asada Y, Tatsumi K, Habara T, Kuramoto T, Seki M, Yoshida H, Takeuchi K, Shiotani M, Mukaida T, Odawara Y, Mio Y, Kamiya H. P-384 Efficacy of endometrial microbiome metagenomic analysis with recurrent implantation failure and recurrent pregnancy loss: multicenter study in Japan. Hum Reprod 2022. [DOI: 10.1093/humrep/deac105.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Does the result of endometrial microbiome metagenomic analysis (EMMA), a next generation sequencing (NGS)-based test of the intrauterine microbiome, have an impact on pregnancy rate after the test?
Summary answer
After recommend treatment with antimicrobial and probiotic therapy, the group diagnosed as dysbiosis by EMMA achieved pregnancy significantly earlier than the group with Normal result.
What is known already
Using NGS technology, EMMA testing can determine the composition of the endometrial microbiome by analysing bacterial 16S ribosomal RNA with a focus on the lactobacillus population. Endometrial flora in patients undergoing in vitro fertilization (IVF) is often composed of pathogenic microorganisms which decrease implantation rates, such as the Enterobacteriaceae family, Staphylococcus spp., Escherichia coli and Gram-negative bacteria. Other studies also indicate that Lactobacillus spp. is a major microorganism in the endometrium. Especially, lactobacillus-dominated microbiota (LDM, defined as > 90% Lactobacillus spp.) in the endometrium has been reported to lead to better pregnancy outcomes than non-LDM (<90% Lactobacillus spp.).
Study design, size, duration
This study was a prospective, multicenter cohort study of 527 patients (under 42 years old) with recurrent implantation failure (RIF) and recurrent pregnancy loss (RPL) at 14 IVF treatment facilities in Japan from June 2019 to August 2021. Defining RIF as three or more failed implantation attempts and RPL as two or more miscarriages, we examined the prognosis of two additional embryo transfers (ETs) after the EMMA test in patients who underwent the test.
Participants/materials, setting, methods
Endometrial tissue was obtained by aspiration from patients in day 15-25 of their menstrual cycles, and sample tissues were analyzed by NGS for EMMA. Participant centers treated patients according to the therapies specified in the reports, including antibiotic treatments, probiotic treatments, re-analysis, and embryo transfer. Multivariate analysis was performed using a generalized linear model with the endpoint of ongoing pregnancy. For the time-to-event analyses, we used Kaplan-Meier survival analysis to compare time to ongoing pregnancy.
Main results and the role of chance
The results of the first EMMA were as follows: 229 patients (43.4%) were normal with Lactobacillus spp. >90% (Normal group), 110 patients (20.9%) were abnormal with less than 90% Lactobacillus spp. and predominantly pathogenic bacteria (Abnormal group), and 188 patients (35.7%) were mild with low absolute amounts of bacteria and ultralow biomass indicating almost sterile (Mild + Ultralow group). There were no significant differences in background factors such as age, duration of infertility, number of previous ETs, or history of deliveries among the three groups. Gardnerella was the most pathogenic bacteria detected in patients with Abnormal EMMA results. All patients in the Abnormal group were treated with antimicrobials and probiotics, and those in Mild + Ultralow group were treated with probiotics. Odds ratio for ongoing pregnancy rate was 1.10(95%CI 0.67-1.82, p = 0.699) in Abnormal group and 1.23(95%CI 0.80-1.89, p = 0.342) in Mild + Ultralow group, respectively. After the intervention, ongoing pregnancies were comparable to those in Normal group.Analysis of time to pregnancy using Kaplan-Meier survival curves showed that Abnormal group had a significantly higher rate of ongoing pregnancies during the observation period than the other groups (p = 0.031).
Limitations, reasons for caution
Since this study was not necessarily limited to euploid embryos transferred after testing, an aging bias cannot be excluded. Since this study was conducted with all patients receiving EMMA, the effectiveness of the test needs to be further validated by comparison to patients without EMMA testing.
Wider implications of the findings
This study is the first multicenter study to demonstrate that the intervention based on EMMA reports improve pregnancy outcome in the patients with RIF and RPL. We suggest that the EMMA procedure, which aims at establishing an appropriate uterine microbiome, may be important for implantation and pregnancy continuation.
Trial registration number
UMIN000036917
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Affiliation(s)
- N Iwami
- Kamiya Ladies Clinic, Center of reproduction , Sapporo, Japan
| | - S Komiya
- Horac IVF Grand Front Osaka Clinic, Center of reproduction , Osaka, Japan
| | - Y Asada
- Asada Ladies Clinic, Center of reproduction , Nagoya, Japan
| | - K Tatsumi
- Umegaoka Women’s Clinic, Center of reproduticion , Tokyo, Japan
| | - T Habara
- Okayama Couple's Clinic, Center of reproduction , Okayama, Japan
| | - T Kuramoto
- Kuramoto Women’s Clinic, Center of reproduction , Hukuoka, Japan
| | - M Seki
- Sekiel Ladies Clinic, Center of reproduction , Takasaki, Japan
| | - H Yoshida
- Sendai ART Clinic, Center of reproduction , Sendai, Japan
| | - K Takeuchi
- Takeuchi Ladies Clinic, Center of reproduction , Aira, Japan
| | - M Shiotani
- Hanabusa Women’s Clinic, Center of reproduction , Kobe, Japan
| | - T Mukaida
- Hiroshima HART Clinic, Center of reproduction , Hiroshima, Japan
| | - Y Odawara
- Fertility Clinic Tokyo, Center of reproduction , Tokyo, Japan
| | - Y Mio
- Mio Fertility Clinic, Center of reproduction , Yonago, Japan
| | - H Kamiya
- Kamiya Ladies Clinic, Center of reproduction , Sapporo, Japan
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Ikezawa K, Ekawa T, Hasegawa S, Kai Y, Takada R, Yamai T, Fukutake N, Ogawa H, Akazawa T, Mizote Y, Tatsumi K, Nagata S, Asukai K, Takahashi H, Ohkawa K, Tahara H. Establishment of organoids using residual samples from saline flushes during endoscopic ultrasound-guided fine-needle aspiration in patients with pancreatic cancer. Endosc Int Open 2022; 10:E82-E87. [PMID: 35036290 PMCID: PMC8752201 DOI: 10.1055/a-1713-3404] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 10/07/2021] [Indexed: 11/04/2022] Open
Abstract
Background and study aims In patients with pancreatic cancer (PC), patient-derived organoid cultures can be useful tools for personalized drug selection and preclinical evaluation of novel therapies. To establish a less invasive method of creating organoids from a patient's tumor, we examined whether PC organoids can be established using residual samples from saline flushes (RSSFs) during endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). Methods Five patients with PC who underwent EUS-FNA were enrolled in a prospective study conducted at our institution. RSSFs obtained during EUS-FNA procedures were collected. An organoid culture was considered as established when ≥ 5 passages were successful. Organoid-derived xenografts were created using established organoids. Results EUS-FNA was performed using a 22- or 25-gauge lancet needle without complications. Patient-derived organoids were successfully established in four patients (80.0 %) with the complete medium and medium for the selection of KRAS mutants. Organoid-derived xenografts were successfully created and histologically similar to EUS-FNA samples. Conclusions Patient-derived PC organoids were successfully established using EUS-FNA RSSFs, which are produced as a byproduct of standard manipulations, but are usually not used for diagnosis. This method can be applied to all patients with PC, without additional invasive procedures, and can contribute to the development of personalized medicine and molecular research.
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Affiliation(s)
- Kenji Ikezawa
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Tomoya Ekawa
- Department of Cancer Drug Discovery and Development, Research Center, Osaka International Cancer Institute, Osaka, Japan
| | | | - Yugo Kai
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Ryoji Takada
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Takuo Yamai
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Nobuyasu Fukutake
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Hisataka Ogawa
- Nitto Joint Research Department for Nucleic Acid Medicine, Research Center, Osaka International Cancer Institute, Osaka, Japan
| | - Takashi Akazawa
- Department of Cancer Drug Discovery and Development, Research Center, Osaka International Cancer Institute, Osaka, Japan
| | - Yu Mizote
- Department of Cancer Drug Discovery and Development, Research Center, Osaka International Cancer Institute, Osaka, Japan
| | - Kumiko Tatsumi
- Department of Cancer Drug Discovery and Development, Research Center, Osaka International Cancer Institute, Osaka, Japan
| | - Shigenori Nagata
- Department of Diagnostic Pathology and Cytology, Osaka International Cancer Institute, Osaka, Japan
| | - Kei Asukai
- Department of Surgery, Osaka International Cancer Institute, Osaka, Japan
| | - Hidenori Takahashi
- Department of Surgery, Osaka International Cancer Institute, Osaka, Japan
| | - Kazuyoshi Ohkawa
- Department of Hepatobiliary and Pancreatic Oncology, Osaka International Cancer Institute, Osaka, Japan
| | - Hideaki Tahara
- Department of Cancer Drug Discovery and Development, Research Center, Osaka International Cancer Institute, Osaka, Japan,Project Division of Cancer Biomolecular Therapy, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Kakehashi A, Chariyakornkul A, Suzuki S, Khuanphram N, Tatsumi K, Yamano S, Fujioka M, Gi M, Wongpoomchai R, Wanibuchi H. Cache Domain Containing 1 Is a Novel Marker of Non-Alcoholic Steatohepatitis-Associated Hepatocarcinogenesis. Cancers (Basel) 2021; 13:cancers13061216. [PMID: 33802238 PMCID: PMC8001421 DOI: 10.3390/cancers13061216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/25/2021] [Accepted: 03/03/2021] [Indexed: 01/31/2023] Open
Abstract
Simple Summary The aim of the present study was to discover novel early molecular biomarkers of liver neoplasms which arise in non-alcoholic steatohepatitis (NASH) Stelic Animal Model (STAM) mice. Significant increase of lipid deposits, hepatocyte ballooning, fibrosis, and incidences and multiplicities of hepatocellular adenomas and carcinomas were detected in the livers of 18-week-old STAM mice. From the results of proteome analysis of STAM mice hepatocellular carcinomas, significant elevation of a novel protein, cache domain-containing 1 (CACHD1) was found. Furthermore, we observed CACHD1-positive foci in STAM mice livers, which number, area, and cell proliferation index within the foci were significantly elevated. Results of immunohistochemical and in vitro functional analysis indicated that CACHD1 may become a useful early biomarker and potential molecular target in NASH-associated hepatocarcinogenesis, which is involved in control of cell proliferation, autophagy and apoptosis. Abstract In the present study, potential molecular biomarkers of NASH hepatocarcinogenesis were investigated using the STAM mice NASH model, characterized by impaired insulin secretion and development of insulin resistance. In this model, 2-days-old C57BL/6N mice were subjected to a single subcutaneous (s.c.) injection of 200 μg streptozotocin (STZ) to induce diabetes mellitus (DM). Four weeks later, mice were administered high-fat diet (HFD) HFD-60 for 14 weeks (STAM group), or fed control diet (STZ group). Eighteen-week-old mice were euthanized to allow macroscopic, microscopic, histopathological, immunohistochemical and proteome analyses. The administration of HFD to STZ-treated mice induced significant fat accumulation and fibrosis development in the liver, which progressed to NASH, and rise of hepatocellular adenomas (HCAs) and carcinomas (HCCs). In 18-week-old animals, a significant increase in the incidence and multiplicity of HCAs and HCCs was found. On the basis of results of proteome analysis of STAM mice HCCs, a novel highly elevated protein in HCCs, cache domain-containing 1 (CACHD1), was chosen as a potential NASH-HCC biomarker candidate. Immunohistochemical assessment demonstrated that STAM mice liver basophilic, eosinophilic and mixed-type altered foci, HCAs and HCCs were strongly positive for CACHD1. The number and area of CACHD1-positive foci, and cell proliferation index in the area of foci in mice of the STAM group were significantly increased compared to that of STZ group. In vitro siRNA knockdown of CACHD1 in human Huh7 and HepG2 liver cancer cell lines resulted in significant inhibition of cell survival and proliferation. Analysis of the proteome of knockdown cells indicated that apoptosis and autophagy processes could be activated. From these results, CACHD1 is an early NASH-associated biomarker of liver preneoplastic and neoplastic lesions, and a potential target protein in DM/NASH-associated hepatocarcinogenesis.
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Affiliation(s)
- Anna Kakehashi
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
- Correspondence: ; Tel.: +81-66-645-3737
| | - Arpamas Chariyakornkul
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, 110 Inthawarorot Rd., Sri Phum, Muang, Chiang Mai 50200, Thailand; (A.C.); (N.K.); (R.W.)
| | - Shugo Suzuki
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
| | - Napaporn Khuanphram
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, 110 Inthawarorot Rd., Sri Phum, Muang, Chiang Mai 50200, Thailand; (A.C.); (N.K.); (R.W.)
| | - Kumiko Tatsumi
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
| | - Shotaro Yamano
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
| | - Masaki Fujioka
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
| | - Min Gi
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
| | - Rawiwan Wongpoomchai
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, 110 Inthawarorot Rd., Sri Phum, Muang, Chiang Mai 50200, Thailand; (A.C.); (N.K.); (R.W.)
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Graduate School of Medicine, Osaka City University, Abeno-ku 1-4-3 Asahi-machi, Osaka 545-8585, Japan; (S.S.); (K.T.); (S.Y.); (M.F.); (M.G.); (H.W.)
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Soga F, Tanaka H, Tatsumi K, Mochizuki Y, Sano H, Toki H, Matsumoto K, Shite J, Takaoka H, Doi T, Hirata K. impact of dapagliflozin on left ventricular diastolic function in diabetic patients with heart failure complicating cardiovascular risk factors. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Type 2 diabetes mellitus (T2DM) is a well-known risk factor for heart failure (HF), even in patients without a structural heart disease or a symptom of HF. Diabetes-related cardiomyopathy is presented as an left ventricular (LV) diastolic dysfunction, which, like cardiovascular disease, is a contributor of the development of HF in both patients with reduced ejection fraction (HFrEF) and with preserved ejection fraction (HFpEF). Furthermore, comorbid factors other than T2DM also have been identified as high risk factors for of progression to HF. Dapagliflozin is a sodium glucose cotransporter type 2 (SGLT2) inhibitor, and represents a new class of anti-hyperglycemic agents for T2DM. A result from a recent large clinical trial showed that dapagliflozin reduced risk of worsening HF or death from cardiovascular causes for patients with HFrEF compared to those who received a placebo, regardless of the presence or absence of T2DM. However, the effect of SGLT2 inhibitors on LV diastolic function in T2DM patients with HF who had cardiovascular risk factors other than T2DM remains uncertain.
Purpose
Our purpose was to investigate the impact of dapagliflozin on LV diastolic function in T2DM patients with stable HF complicating cardiovascular risk factors.
Methods
We analyzed data from our previous prospective multicenter study, which investigate the effect of dapagliflozin on LV diastolic function of 53 T2DM patients with stable HF at five institutions in Japan. Patients who had been taking at least one antidiabetic drugs other than SGLT2 inhibitor started the administration of dapagliflozin. Cardiovascular risk factors other than T2DM was determined as age, gender, hypertension, dyslipidemia, history of cardiovascular events and overweight.
Results
E/e′ significantly decreased from 9.3 to 8.5 cm/s 6 months after administration of dapagliflozin (p = 0.020) as previously described. Multivariate logistic regression analysis showed that dyslipidemia was the only independent determinant of an improvement of E/e’ among cardiovascular risk factors. Furthermore, relative changes in E/e’ from baseline to 6 months after administration of dapagliflozin seen in HFpEF patients with dyslipidemia were significantly larger than those in HFpEF patients without dyslipidemia (-15.2% vs. 29.6%, p = 0.014), but such a difference was not observed in non-HFpEF patients. In addition, relative changes in high-density lipoprotein cholesterol (HDL-C) from baseline to 6 months after administration of dapagliflozin had significant correlation with those in E/e’ (r=-0.300, p = 0.038). However, such correlations were not observed in low-density lipoprotein cholesterol (LDL-C) and triglyceride (r = 0.05, p = 0.72 and r = 0.05, p = 0.73). Conclusion: Dapagliflozin was more beneficial effect on LV diastolic function for T2DM patients with stable HF, especially those with complicating dyslipidemia. Our findings may thus offer a new insight into the management of T2DM patients with HF.
Abstract Figure.
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Affiliation(s)
- F Soga
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Tanaka
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Tatsumi
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - Y Mochizuki
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Sano
- Takatsuki General Hospital, Cardiology, Takatsuki, Japan
| | - H Toki
- Kobe Red Cross Hospital, Cardiology, Kobe, Japan
| | - K Matsumoto
- Kobe University Graduate School of Medicine, Kobe, Japan
| | - J Shite
- Osaka Saiseikai Nakatsu Hospital, Cardiology, Osaka, Japan
| | - H Takaoka
- Takatsuki General Hospital, Cardiology, Takatsuki, Japan
| | - T Doi
- Kobe Red Cross Hospital, Cardiology, Kobe, Japan
| | - K Hirata
- Kobe University Graduate School of Medicine, Kobe, Japan
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Dokuni K, Matsumoto K, Tatsumi K, Shono A, Suzuki M, Sumimoto K, Tanaka Y, Yamashita K, Shibata N, Yokota S, Sutou M, Tanaka H, Kiuchi K, Fukuzawa K, Hirata K. Cardiac resynchronization therapy improves left atrial reservoir function through resynchronization of the left atrium in patients with heart failure. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
The structural remodeling of the left atrium (LA) has been proposed as an important determinant of adverse outcomes in patients with heart failure (HF). However, little is known about the potential impact of LA mechanical dyssynchrony on its reservoir function and the prognosis of patients with HF. In addition, it has not been fully investigated whether cardiac resynchronization therapy (CRT) is also beneficial to LA function.
Purposes
The purposes of this study were to test whether left ventricular (LV) dyssynchrony may negatively affect LA synchronicity and reservoir function, and to assess whether residual LA dyssynchrony after CRT affects the prognosis in patients with HF with reduced ejection fraction (HFrEF).
Methods
This study included total of 90 subjects: 40 HFrEF with a wide-QRS complex (≧130 ms), 28 HFrEF with a narrow-QRS, and 22 age- and sex-matched normal controls. LA global longitudinal strain (LA-GLS) and LA dyssynchrony were quantified using speckle-tracking strain analysis. LA dyssynchrony was defined as the maximal difference of time-to-peak strain (LA time-diff). All wide-QRS HFrEF received CRT, and event-free survival was tracked for 24 months.
Results
At baseline, HFrEF patients showed significant LA remodeling coupled with the reduced LA reservoir function, as evidenced by larger LA volume index (LAVi: 46 ± 16 vs. 30 ± 14 mL/m², P < 0.01) and smaller LA-GLS (13.0 ± 4.8 vs. 30.6 ± 10.7%, P < 0.01). Of note was that, not only LV dyssynchrony (381 ± 178 vs. 177 ± 62 ms, P < 0.01) but also LA dyssynchrony (298 ± 136 vs. 186 ± 78 ms, P < 0.01) were significantly larger in patients with HFrEF compared to normal subjects and this applied even more to patients with a wide-QRS complex. All patients with a wide-QRS complex underwent CRT, and only responders exhibited the significant decrease in LA time-diff (from 338 ± 123 to 245 ± 141 ms, P < 0.05) and increase in LA-GLS (from 11.9 ± 4.7 to 19.6 ± 10.1%, P < 0.05) in parallel with the reduction in LAVi (from 48 ± 17 to 37 ± 18 mL/m², P < 0.05) at 6 months after CRT. Receiver operating characteristic curve analysis identified the optimal cut-off value of LA time-diff at 6 months after CRT as 202 ms (P < 0.05) and that of LA-GLS as 14.6% (P < 0.05) for predicting adverse cardiac events. The patients whose LA time-diff reduced <202 ms after CRT showed significantly favorable event-free survival than the others. Similarly, the patients whose LA-GLS improved >14.6% after CRT exhibited significantly favorable event-free survival than the others (P < 0.05, respectively). Of note was that, when the patients were restricted to CRT responders only, those who showed LA time-diff less than 202 ms at 6 months after CRT almost never experienced cardiac events (P < 0.05).
Conclusions
The improved LV coordination by CRT also resulted in resynchronization of discoordinated LA wall motion and a consecutive improvement of LA reservoir function, which ultimately lead to the favorable outcome for HFrEF patients with wide-QRS complex.
Abstract Figure.
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Affiliation(s)
| | | | | | - A Shono
- Kobe University, Kobe, Japan
| | | | | | | | | | | | | | - M Sutou
- Kobe University, Kobe, Japan
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Tanaka H, Soga F, Tatsumi K, Mochizuki Y, Sano H, Toki H, Matsumoto K, Shite J, Takaoka H, Doi T, Hirata K. Positive effect of dapagliflozin on left ventricular longitudinal function for type 2 diabetic mellitus patients with chronic heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Type 2 diabetes mellitus (T2DM) has come to be considered an independent predictor of mortality, and also a contributor to the development of heart failure (HF) with reduced ejection fraction (HFrEF) and with preserved ejection fraction (HFpEF). Left ventricular (LV) longitudinal myocardial dysfunction as assessed in terms of lower global longitudinal strain (GLS), has been identified even in T2DM patients with preserved LV ejection fraction (LVEF), and should be considered the first marker of a preclinical form of DM-related cardiac dysfunction, leading to HFpEF. Sodium glucose cotransporter type 2 (SGLT2) inhibitors represent a new class of anti-hyperglycemic agents for T2DM, but the effect of SGLT2 inhibitors on LV longitudinal myocardial function in T2DM patients with HF remains uncertain. To examine this effect, as well as the association of LV longitudinal myocardial function with LV diastolic function after administration of SGLT2 inhibitor in T2DM patients with stable HF, we analyzed data from our previous prospective multicenter study, in which we investigated the effect of SGLT2 inhibitor on LV diastolic functional parameters of T2DM patients with stable HF at five institutions in Japan.
Methods
Our previous trial was a prospective multicenter study of 58 T2DM patients with stable HF at five institutions in Japan. Patients who had been taking at least one antidiabetic drugs other than SGLT2 inhibitors started the administration of 5 mg/day of dapagliflozin. Echocardiography was performed at baseline and 6 months after administration of dapagliflozin. LV diastolic function was defined as the ratio of mitral inflow E to mitral e' annular velocities (E/e'). LV longitudinal myocardial function was assessed as GLS based on the current guidelines.
Results
E/e' significantly decreased from 9.3 to 8.5 cm/s 6 months after administration of dapagliflozin (p=0.020) as previously described, while GLS showed significant improvement from 15.5±3.5% to 16.9±4.1% (p<0.01) 6 months after administration of dapagliflozin. Furthermore, improvement of GLS in HFpEF patients was more significant from 17.0±1.9% to 18.7±2.0% (p<0.001), compared to that in HFrEF patients from 11.3±3.8% to 11.8±4.6% (p=0.13). It was noteworthy that multiple regression analysis showed that the change in GLS after administration of dapagliflozin was the only independent determinant parameter for the change in E/e' after administration of dapagliflozin.
Conclusion
Dapagliflozin was found to be associated with improvement of LV longitudinal myocardial function, which led to further improvement of LV diastolic function of T2DM patients with stable HF. GLS-guided management may thus lead to improved management of T2DM patients with stable HF.
Representative case
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - F Soga
- Kobe University, Kobe, Japan
| | | | - Y Mochizuki
- Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
| | - H Sano
- Aijinkai Takatsuki Hospital, Takatsuki, Japan
| | - H Toki
- Kobe Red Cross Hospital, Kobe, Japan
| | | | - J Shite
- Osaka Saiseikai Nakatsu Hospital, Osaka, Japan
| | - H Takaoka
- Aijinkai Takatsuki Hospital, Takatsuki, Japan
| | - T Doi
- Kobe Red Cross Hospital, Kobe, Japan
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10
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Tada Y, Morinaga T, Sekine I, Suzuki T, Shimomura I, Tatsumi K, Takiguchi Y, Shimada H, Hiroshima K, Tagawa M. P2.06-34 Inhibition of the HGF/c-Met Pathway for Malignant Mesothelioma with an Intra-Thoracic Injection of the NK4 Expressing Adenoviral Vectors. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1289] [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: 11/25/2022]
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11
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Matsuda S, Suzuki S, Morimoto K, Aono A, Nishio K, Asakura T, Sasaki Y, Namkoong H, Nishimura T, Ogata H, Hasegawa N, Kurashima A, Ishii M, Tatsumi K, Mitarai S, Goto H. Mycobacterium triplex pulmonary disease with acquired macrolide resistance in immunocompetent patients. Clin Microbiol Infect 2018; 24:671-672. [PMID: 29309938 DOI: 10.1016/j.cmi.2017.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/25/2017] [Accepted: 12/26/2017] [Indexed: 11/26/2022]
Affiliation(s)
- S Matsuda
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - S Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - K Morimoto
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan; Division of Clinical Research, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan.
| | - A Aono
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - K Nishio
- Department of Respiratory Medicine, Kawasaki Municipal Ida Hospital, Kanagawa, Japan
| | - T Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Y Sasaki
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - H Namkoong
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - T Nishimura
- Health Centre, Keio University, Tokyo, Japan
| | - H Ogata
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - N Hasegawa
- Centre for Infectious Diseases and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - A Kurashima
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - M Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - K Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - S Mitarai
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - H Goto
- Respiratory Disease Centre, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
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12
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Yamaguchi T, Gi M, Yamano S, Fujioka M, Tatsumi K, Kawachi S, Ishii N, Doi K, Kakehashi A, Wanibuchi H. A chronic toxicity study of diphenylarsinic acid in F344 rats in drinking water for 52 weeks. ACTA ACUST UNITED AC 2016; 69:1-7. [PMID: 28029482 DOI: 10.1016/j.etp.2016.10.002] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/13/2016] [Accepted: 10/06/2016] [Indexed: 12/18/2022]
Abstract
Diphenylarsinic acid (DPAA), a chemical warfare-related neurotoxic organic arsenical, is present in the groundwater and soil in some regions of Japan due to illegal dumping after World War II. The purpose of the present study was to evaluate the potential toxicity of DPAA when administered to rats in their drinking water for 52 weeks. DPAA was administered to groups 1-4 at concentrations of 0, 5, 10, and 20ppm in their drinking water for 52 weeks. There were no significant differences in the final body weights between the control groups and the treatment groups in male or female rats. In serum biochemistry, in females 20ppm DPAA significantly increased alkaline phosphatase and γ-glitamyl transferase compared to controls, and 10 and 20ppm DPAA significantly increased total cholesterol compared to controls. Absolute and relative liver weights were significantly increased in females treated with 20ppm DPAA compared to the control group. Dilation of the common bile duct outside the papilla of Vater and stenosis of the papilla of Vater was observed in all male and female rats administered 20ppm DPAA. The incidence of intrahepatic bile duct hyperplasia was significantly increased in male and female rats treated with 20ppm DPAA compared to the control groups. These results suggest that DPAA is toxic to the bile duct epithelium in rats. The no-observed adverse effect levels of DPAA were estimated to be 10ppm (0.48mg/kg b.w./day) for males and 5ppm (0.35mg/kg b.w./day) for females under the conditions of this study.
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Affiliation(s)
- Takashi Yamaguchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Min Gi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Shotarou Yamano
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan; Division of Rare Cancer Research National Cancer Center Research Institute, Tsukiji 5-5-1, Chuo-ku Tokyo 104-0045, Japan
| | - Masaki Fujioka
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Kumiko Tatsumi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Satoko Kawachi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Naomi Ishii
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Kenichiro Doi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Anna Kakehashi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
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Fujioka M, Gi M, Kawachi S, Tatsumi K, Ishii N, Doi K, Kakehashi A, Wanibuchi H. Examination of in vivo mutagenicity of sodium arsenite and dimethylarsinic acid in gpt delta rats. J Environ Sci (China) 2016; 49:125-130. [PMID: 28007167 DOI: 10.1016/j.jes.2016.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/19/2016] [Accepted: 07/21/2016] [Indexed: 06/06/2023]
Abstract
Arsenic is a well-known human bladder and liver carcinogen, but its exact mechanism of carcinogenicity is not fully understood. Dimethylarsinic acid (DMAV) is a major urinary metabolite of sodium arsenite (iAsIII) and induces urinary bladder cancers in rats. DMAV and iAsIII are negative in in vitro mutagenicity tests. However, their in vivo mutagenicities have not been determined. The purpose of present study is to evaluate the in vivo mutagenicities of DMAV and iAsIII in rat urinary bladder epithelium and liver using gpt delta F344 rats. Ten-week old male gpt delta F344 rats were randomized into 3 groups and administered 0, 92mg/L DMAV, or 87mg/L iAsIII (each 50mg/L As) for 13weeks in the drinking water. In the mutation assay, point mutations are detected in the gpt gene by 6-thioguanine selection (gpt assay) and deletion mutations are identified in the red/gam genes by Spi- selection (Spi- assay). Results of the gpt and Spi- assays showed that DMAV and iAsIII had no effects on the mutant frequencies or mutation spectrum in urinary bladder epithelium or liver. These findings indicate that DMAV and iAsIII are not mutagenic in urinary bladder epithelium or liver in rats.
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Affiliation(s)
- Masaki Fujioka
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan.
| | - Min Gi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Satoko Kawachi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Kumiko Tatsumi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Naomi Ishii
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Kenichiro Doi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Anna Kakehashi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, 545-8585, Osaka, Japan.
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14
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Fujioka M, Gi M, Kawachi S, Tatsumi K, Kumada K, Wanibuchi H. Evaluation of in vivo mutagenicity of iAsIII and DMAV in gpt delta F344 rat. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.432] [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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15
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Gi M, Fujioka M, Yamano S, Shimomura E, Kanki M, Kawachi S, Tachibana H, Tatsumi K, Fang H, Ishii N, Kakehashi A, Wanibuchi H. Modifying effects of 1,2-dichloropropane on N-nitrosobis(2-oxopropyl)amine-induced cholangiocarcinogenesis in male Syrian hamsters. J Toxicol Sci 2016; 40:647-56. [PMID: 26354381 DOI: 10.2131/jts.40.647] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Based on the findings of epidemiological studies in Japan that occupational exposure to 1,2-dichloropropane (1,2-DCP) was associated with increased cholangiocarcinomas, 1,2-DCP has recently been classified as being carcinogenic to humans (Group 1). However, the cholangiocarcinogenicity of 1,2-DCP has not been demonstrated experimentally, and it was negative for cholangiocarcinogenicity in rats and mice. The present study determined the effects of 1,2-DCP on N-nitrosobis(2-oxopropyl)amine (BOP)-induced cholangiocarcinogenesis in male hamsters. We found that 1,2-DCP did not enhance the development of BOP-induced atypical biliary hyperplasia and did not induce any lesions in liver bile duct when administered alone. Notably, 1,2-DCP had no effect on the proliferative activity of bile duct epithelial cells regardless of BOP-initiation. These results demonstrate that 1,2-DCP lacks promoting effects on BOP-induced cholangiocarcinogenesis and suggest the possibility that 1,2-DCP is not cholangiocarcinogenic to the hamster in the present model. In addition, 1,2-DCP also lacks promoting effects on pancreatic, lung, and renal carcinogenesis. As the occurrence of occupational cholangiocarcinomas in Japan might be attributed to exposure to multiple chemicals, the results of the present study indicate that it will be necessary to determine the cholangiocarcinogenic effects of concurrent exposure of 1,2-DCP and the other halogen solvents to which workers with cholangiocarcinomas were exposed.
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Affiliation(s)
- Min Gi
- Department of Molecular Pathology, Osaka City University Graduate School of Medicine
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16
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Yamano S, Gi M, Tago Y, Doi K, Okada S, Hirayama Y, Tachibana H, Ishii N, Fujioka M, Tatsumi K, Wanibuchi H. Role of deltaNp63(pos)CD44v(pos) cells in the development of N-nitroso-tris-chloroethylurea-induced peripheral-type mouse lung squamous cell carcinomas. Cancer Sci 2016; 107:123-32. [PMID: 26663681 PMCID: PMC4768398 DOI: 10.1111/cas.12855] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/16/2015] [Accepted: 11/28/2015] [Indexed: 12/18/2022] Open
Abstract
The role of cells expressing stem cell markers deltaNp63 and CD44v has not yet been elucidated in peripheral-type lung squamous cell carcinoma (pLSCC) carcinogenesis. Female A/J mice were painted topically with N-nitroso-tris-chloroethylurea (NTCU) for induction of pLSCC, and the histopathological and molecular characteristics of NTCU-induced lung lesions were examined. Histopathologically, we found atypical bronchiolar hyperplasia, squamous metaplasia, squamous dysplasia, and pLSCCs in the treated mice. Furthermore, we identified deltaNp63(pos)CD44v(pos)CK5/6(pos)CC10(pos) clara cells as key constituents of early precancerous atypical bronchiolar hyperplasia. In addition, deltaNp63(pos)CD44v(pos) cells existed throughout the atypical bronchiolar hyperplasias, squamous metaplasias, squamous dysplasias, and pLSCCs. Overall, our findings suggest that NTCU induces pLSCC through an atypical bronchiolar hyperplasia-metaplasia-dysplasia-SCC sequence in mouse lung bronchioles. Notably, Ki67-positive deltaNp63(pos)CD44v(pos) cancer cells, cancer cells overexpressing phosphorylated epidermal growth factor receptor and signal transducer and activator of transcription 3, and tumor-associated macrophages were all present in far greater numbers in the peripheral area of the pLSCCs compared with the central area. These findings suggest that deltaNp63(pos)CD44v(pos) clara cells in mouse lung bronchioles might be the origin of the NTCU-induced pLSCCs. Our findings also suggest that tumor-associated macrophages may contribute to creating a tumor microenvironment in the peripheral area of pLSCCs that allows deltaNp63(pos)CD44v(pos) cancer cell expansion through activation of epidermal growth factor receptor signaling, and that exerts an immunosuppressive effect through activation of signal transducer and activator of transcription 3 signaling.
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Affiliation(s)
- Shotaro Yamano
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Min Gi
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Yoshiyuki Tago
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Kenichiro Doi
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Satoshi Okada
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Yukiyoshi Hirayama
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Hirokazu Tachibana
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Naomi Ishii
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Masaki Fujioka
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Kumiko Tatsumi
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
| | - Hideki Wanibuchi
- Department of Molecular PathologyOsaka City University Graduate School of MedicineOsakaJapan
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17
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Yamano S, Gi M, Tago Y, Doi K, Okada S, Hirayama Y, Tachibana H, Ishii N, Fujioka M, Tatsumi K, Wanibuchi H. Co-localization of Ki67, CD44v and deltaNp63 in the invasive front of lung squamous cell carcinoma. Cancer Sci 2016. [DOI: 10.1111/cas.12777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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18
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Li Q, Sato A, Shimozato O, Shingyoji M, Tada Y, Tatsumi K, Shimada H, Hiroshima K, Tagawa M. Administration of DNA Encoding the Interleukin-27 Gene Augments Antitumour Responses through Non-adaptive Immunity. Scand J Immunol 2015; 82:320-7. [PMID: 26095954 DOI: 10.1111/sji.12321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 05/05/2015] [Indexed: 01/05/2023]
Abstract
DNA-mediated immunization of a tumour antigen is a possible immunotherapy for cancer, and interleukin (IL)-27 has diverse functions in adaptive immunity. In this study, we examined whether IL-27 DNA administration enhanced antitumour effects in mice vaccinated with DNA encoding a putative tumour antigen, β-galactosidase (β-gal). An intramuscular injection of cardiotoxin before DNA administration facilitated the exogenous gene expression. In mice received β-gal and IL-27 DNA, growth of β-gal-positive P815 tumours was retarded and survival of the mice was prolonged. Development of β-gal-positive Colon 26 tumours was suppressed by vaccination of β-gal DNA and further inhibited by additional IL-27 DNA administration or IL-12 family cytokines. Nevertheless, a population of β-gal-specific CD8(+) T cells did not increase, and production of anti-β-gal antibody was not enhanced by IL-27 DNA administration. Spleen cells from mice bearing IL-27-expressing Colon 26 tumours showed greater YAC-1-targeted cytotoxicity although CD3(-)/DX5(+) natural killer (NK) cell numbers remained unchanged. Recombinant IL-27 enhanced YAC-1-targeted cytotoxicity of IL-2-primed splenic NK cells and augmented a phosphorylation of signal transducer and activator of transcription 3 and an expression of perforin. These data collectively indicate that IL-27 DNA administration activates NK cells and augments vaccination effects of DNA encoding a tumour antigen through non-adaptive immune responses.
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Affiliation(s)
- Q Li
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chuo-ku, Chiba, Japan.,Department of Immunology, Hebei Medical University, Shijiazhuang, China.,Cell Therapy Center, The 1st Hospital of Hebei Medical University, Shijiazhuang, China.,Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan
| | - A Sato
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chuo-ku, Chiba, Japan.,Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan.,Department of Biochemistry and Genetics, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan
| | - O Shimozato
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chuo-ku, Chiba, Japan
| | - M Shingyoji
- Department of Thoracic Diseases, Chiba Cancer Center, Chuo-ku, Chiba, Japan
| | - Y Tada
- Department of Respirology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan
| | - K Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan
| | - H Shimada
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - K Hiroshima
- Department of Pathology, Tokyo Women's Medical University Yachiyo Medical Center, Owada-Shinden, Yachiyo, Japan
| | - M Tagawa
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chuo-ku, Chiba, Japan.,Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan
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19
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Takei Y, Okamoto S, Kawamura K, Jiang Y, Morinaga T, Shingyoji M, Sekine I, Kubo S, Tada Y, Tatsumi K, Shimada H, Hiroshima K, Yamaguchi N, Tagawa M. Expression of p53 synergistically augments caspases-mediated apoptosis induced by replication-competent adenoviruses in pancreatic carcinoma cells. Cancer Gene Ther 2015; 22:445-53. [DOI: 10.1038/cgt.2015.33] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 12/16/2022]
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Tatsumi K, Kawano K, Okui H, Shintani H, Nakabe K. Analysis and measurement of dielectrophoretic manipulation of particles and lymphocytes using rail-type electrodes. Med Eng Phys 2015; 38:24-32. [PMID: 26054808 DOI: 10.1016/j.medengphy.2015.05.005] [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: 01/14/2015] [Revised: 04/08/2015] [Accepted: 05/11/2015] [Indexed: 01/09/2023]
Abstract
A particle manipulation and sorting device using the dielectrophoretic (DEP) force is described in this study. The device consists of "ladder-type", "flip-type" and "oblique rail-type" electrode regions. The ladder-type and rail-type electrodes can generate a DEP force distribution that captures the particles, the DEP force of which is negative, in the area located at the center of the electrodes. The ladder-type electrode can align the particles with equal spacing in the streamwise direction. Using the flip-type electrode, which pushes the particles away, in combination with these electrodes, the direction of the particle and timing can be selected with high accuracy, reliability, and response. In the first half of this study, a numerical simulation is carried out to calculate the particle motion and evaluate the performance of the ladder-type electrode. Several models are used to investigate the influences of the non-uniformity of the electric field and the electric interaction of the surface charges and polarizations. Experiments are then carried out to demonstrate the motions of the particles and the sorting reliability. The trajectories and the probability density functions of the particles at the inlet and outlet of the electrode region showed that by using these electrodes the particles can be aligned, sorted, and guided accurately.
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Affiliation(s)
- K Tatsumi
- Department of Mechanical Engineering and Science, Kyoto University, Japan.
| | - K Kawano
- Department of Mechanical Engineering and Science, Kyoto University, Japan
| | - H Okui
- Department of Mechanical Engineering and Science, Kyoto University, Japan
| | - H Shintani
- Department of Mechanical Engineering and Science, Kyoto University, Japan
| | - K Nakabe
- Department of Mechanical Engineering and Science, Kyoto University, Japan
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Yamagata M, Ikeda K, Tsushima K, Iesato K, Abe M, Ito T, Kashiwakuma D, Iwamoto I, Nakagomi D, Sugiyama T, Furuta S, Jayne D, Tatsumi K, Nakajima H. OP0239 Comprehensive Analyses of Lung Abnormalities on Chest Computed Tomography in Patients with Microscopic Polyangiitis before Receiving Immunosuppressive Treatment. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ishibe A, Ota M, Kanazawa A, Watanabe J, Tatsumi K, Watanabe K, Godai T, Yamagishi S, Fujii S, Ichikawa Y, Kunisaki C, Endo I. Nutritional management of anastomotic leakage after colorectal cancer surgery using elemental diet jelly. Hepatogastroenterology 2015; 62:30-33. [PMID: 25911862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND/AIMS Anastomotic leakage is major complication of colorectal surgery. Total parenteral nutrition (TPN) and fasting are conservative treatments for leakage in the absence of peritonitis in Japan. Elemental diet (ED) jelly is a completely digested formula and is easily absorbed without secretion of digestive juices. The purpose of this study was to assess the safety of ED jelly in management of anastomotic leakage. METHODOLOGY Six hundred and two patients who underwent elective surgery for left side colorectal cancer from January 2008 to December 2011 were included in the study. Pelvic drainage was performed for all patients. Sixty-three (10.5%) patients were diagnosed with an anastomotic leakage, and of these, 31 (5.2%) without diverting stoma were enrolled in this study. RESULTS Sixteen patients received TPN (TPN group) and 15 patients received ED jelly (ED group). The duration of intravenous infusion was significantly shorter in the ED group than in the TPN group (15 days versus 25 days, P= 0.008). In the TPN group, catheter infection was occurred in 2 patients who required re-insertion of the catheter. CONCLUSION Conservative management of anastomotic leakage after colorectal surgery with ED jelly appears to be a safe and useful approach.
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Tatsumi K, Antoniak S, Monroe DM, Khorana AA, Mackman N. Evaluation of a new commercial assay to measure microparticle tissue factor activity in plasma: communication from the SSC of the ISTH. J Thromb Haemost 2014; 12:1932-4. [PMID: 25186801 DOI: 10.1111/jth.12718] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 08/14/2014] [Indexed: 11/27/2022]
Affiliation(s)
- K Tatsumi
- Department of Medicine, Division of Hematology and Oncology, UNC McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Ikari J, Inamine A, Yamamoto T, Watanabe-Takano H, Yoshida N, Fujimura L, Taniguchi T, Sakamoto A, Hatano M, Tatsumi K, Tokuhisa T, Arima M. Plant homeodomain finger protein 11 promotes class switch recombination to IgE in murine activated B cells. Allergy 2014; 69:223-30. [PMID: 24286306 DOI: 10.1111/all.12328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2013] [Indexed: 01/20/2023]
Abstract
BACKGROUND Polymorphisms of the Plant homeodomain finger protein 11 (PHF11) are strongly associated with high serum IgE levels and clinical severity of atopic patients. However, the precise mechanism has not been fully elucidated. We investigated the role of Phf11 in class switch recombination (CSR) to IgE by activated B cells. METHODS We generated Phf11 transgenic (Lckd-Phf11-Tg) mice that express the exogenous murine Phf11 in lymphocytes under the control of distal Lck promoter. We examined IL-4-induced CSR to IgE in activated Lckd-Phf11-Tg B cells in vitro. We analyzed production of ovalbumin (OVA)-specific IgE and nose-scratching symptoms in Lckd-Phf11-Tg mice using an OVA-induced allergic rhinitis model. RESULTS The exogenous Phf11 promoted CSR to IgG1 and IgE in activated B cells with an increase in germ line transcript (GLT) γ1 and GLT ε expression. The exogenous Phf11 augmented transcriptional activity of the GLT γ1 and GLT ε promoters through permissive histone modifications and binding of NF-κB and STAT6. Furthermore, the exogenous Phf11 bound to the GLT ε promoter with increased binding of NF-κB. Silencing of the endogenous Phf11 reduced the frequency of CSR to IgE and GLT ε expression, but not to IgG1 or GLT γ1 expression, in activated B cells. In an allergic rhinitis model, Lckd-Phf11-Tg mice showed a significant increase in the production of OVA-specific IgE and the frequency of nose scratching. CONCLUSION Phf11 accelerates CSR to IgE in activated B cells by increasing the transcriptional activity of GLT ε promoter and contributes to the exacerbation of allergic responses. These findings provide a novel therapeutic target for allergic diseases.
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Affiliation(s)
- J. Ikari
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
- Department of Respirology (B2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - A. Inamine
- Department of Otorhinolaryngology (J2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - T. Yamamoto
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - H. Watanabe-Takano
- Department of Biomedical Science (M14); Graduate School of Medicine; Chiba University; Chiba Japan
| | - N. Yoshida
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - L. Fujimura
- Biomedical Research Center; Chiba University; Chiba Japan
| | - T. Taniguchi
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - A. Sakamoto
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - M. Hatano
- Department of Biomedical Science (M14); Graduate School of Medicine; Chiba University; Chiba Japan
- Biomedical Research Center; Chiba University; Chiba Japan
| | - K. Tatsumi
- Department of Respirology (B2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - T. Tokuhisa
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
| | - M. Arima
- Department of Developmental Genetics (H2); Graduate School of Medicine; Chiba University; Chiba Japan
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Ma G, Kawamura K, Shan Y, Okamoto S, Li Q, Namba M, Shingyoji M, Tada Y, Tatsumi K, Hiroshima K, Shimada H, Tagawa M. Combination of adenoviruses expressing melanoma differentiation-associated gene-7 and chemotherapeutic agents produces enhanced cytotoxicity on esophageal carcinoma. Cancer Gene Ther 2014; 21:31-7. [PMID: 24434574 DOI: 10.1038/cgt.2013.79] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 11/23/2013] [Indexed: 11/09/2022]
Abstract
We examined the combinatory antitumor effects of adenoviruses expressing human mda-7/IL-24 gene (Ad-mda-7) and chemotherapeutic agents on nine kinds of human esophageal carcinoma cells. All the carcinoma cells expressed the melanoma differentiation-associated gene-7/interleukin-24 (MDA-7/IL-24) receptor complexes, IL-20R2 and either IL-20R1 or IL-22R1, and were susceptible to Ad-mda-7, whereas fibroblasts were positive only for IL-20R2 gene and resistant to Ad-mda-7-mediated cytotoxicity. Sensitivity of these esophageal carcinoma cells to Ad-mda-7 was however lower than that to Ad expressing the wild-type p53 gene. We thereby investigated a possible combination of Ad-mda-7 and anticancer agents and found that Ad-mda-7 with 5-fluorouracil (5-FU), cisplatin, mitomycin C or etoposide produced greater cytotoxic effects than those by Ad-mda-7 or the agent alone. Half-maximal inhibitory concentration values of the agents in respective cells were decreased by the combination with Ad-mda-7. Cell cycle analyses showed that Ad-mda-7 and 5-FU increased G2/M-phase and S-phase populations, respectively, and the combination augmented sub-G1 populations. Ad-mda-7-treated cells showed cleavages of caspase-8, -9 and -3 and poly (ADP-ribose) polymerase, but the cleavage levels were not different from those of the combination-treated cells. Ad-mda-7 treatments upregulated Akt phosphorylation but suppressed IκB-α levels, whereas 5-FU treatments induced phosphorylation of p53 and extracellular signal-regulated protein kinases 1 and 2. Molecular changes caused by the combination were similar to those by Ad-mda-7 treatments, but the Ad-mda-7-mediated upregulation of Akt phosphorylation decreased with the combination. These data collectively suggest that Ad-mda-7 induced apoptosis despite Akt activation and that the combinatory antitumor effects with 5-FU were produced partly by downregulating the Ad-mda-7-induced Akt activation.
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Affiliation(s)
- G Ma
- 1] Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan [2] Department of Hematology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - K Kawamura
- Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan
| | - Y Shan
- 1] Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan [2] Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - S Okamoto
- 1] Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan [2] Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Q Li
- 1] Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan [2] Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | | | - M Shingyoji
- Department of Thoracic Diseases, Chiba Cancer Center, Chiba, Japan
| | - Y Tada
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - K Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - K Hiroshima
- Department of Pathology, Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan
| | - H Shimada
- Department of Surgery, School of Medicine, Toho University, Tokyo, Japan
| | - M Tagawa
- 1] Division of Pathology and Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan [2] Department of Molecular Biology and Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
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Ozawa K, Funabashi N, Kataoka A, Yanagawa N, Tanabe N, Tatsumi K, Kobayashi Y. Two dimensional global longitudinal strain of right ventricle using transthoracic echocardiography can detect right ventricular fibrosis confirmed by 320 slice CT in pulmonary hypertension. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.3632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ozawa K, Funabashi N, Kataoka A, Yanagawa N, Tanabe N, Tatsumi K, Kobayashi Y. Diagnosis of right ventricular myocardial fibrosis using right ventricular myocardial CT attenuation, wall thickness and motion on ECG-gated 320 slice CT in subjects with pulmonary hypertension. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ozawa K, Funabashi N, Kataoka A, Yanagawa N, Tanabe N, Tatsumi K, Kobayashi Y. Comprehensive evaluation of right ventricular myocardium on ECG-gated 320 slice CT: morphological and functional information and their prognostic values in subjects with pulmonary hypertension. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Matsumoto K, Tanaka H, Tatsumi K, Miyoshi T, Hiraishi M, Kaneko A, Fukuda Y, Onishi T, Kawai H, Hirata K. Left atrial functional reserve in reservoir and passive emptying during dobutamine stress have prognostic impact on cardiac events in patients with dilated cardiomyopathy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ozawa K, Funabashi N, Kataoka A, Yanagawa N, Tanabe N, Tatsumi K, Kobayashi Y. Two and 3-dimensional global longitudinal strain of right ventricular free wall using transthoracic echocardiography could be an accurate indicator of 3-dimensional right ventricular systolic function. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.3628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tatsumi K, Ohashi K, Kanegae K, Shim IK, Okano T. Perioperative haemostatic management of haemophilic mice using normal mouse plasma. Haemophilia 2013; 19:e335-43. [PMID: 23855819 DOI: 10.1111/hae.12211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2013] [Indexed: 12/31/2022]
Abstract
Intense haemostatic interventions are required to avoid bleeding complications when surgical procedures are performed on haemophilia patients. The objective of this study was to establish an appropriate protocol for perioperative haemostatic management of haemophilic mice. We assessed the prophylactic haemostatic effects of normal mouse plasma (NMP) on haemophilia B (HB) mice for both a skin flap procedure and a laparotomy. When 500 μL of NMP was administered to the mice, plasma factor IX (FIX:C) levels peaked at 15.1% immediately after intravenous (IV) administration, at 6.1% 2 h after intraperitoneal (IP) administration and at 2.7% 6 h after subcutaneous administration. Administering 500 μL of NMP via IP or IV 30 min in advance enabled the skin flap procedure to be performed safely without any complications. After the laparotomy procedure, several mice in the IP administration group exhibited lethal bleeding, but all mice survived in the IV administration group. Anti-mouse FIX inhibitors did not develop, even after repetitive administrations of NMP. However, human FIX concentrates, especially plasma-derived concentrates, elicited the anti-human FIX inhibitors. The results show that administering 500 μL of NMP via IV or IP 30 min in advance enables surgical procedures to be safely performed on HB mice, and that IV administration is more desirable than IP if the procedure requires opening of the abdominal wall.
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Affiliation(s)
- K Tatsumi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
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Muto S, Tatsumi K, Rusz J. Parameter-free extraction of EMCD from an energy-filtered diffraction datacube using multivariate curve resolution. Ultramicroscopy 2013; 125:89-96. [DOI: 10.1016/j.ultramic.2012.09.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 09/15/2012] [Accepted: 09/23/2012] [Indexed: 11/30/2022]
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Kitamura A, Takiguchi Y, Kurosu K, Takigawa N, Saegusa F, Hiroshima K, Nakajima T, Tanabe N, Nakatani Y, Yoshino I, Tatsumi K. Feasibility of cytological diagnosis of sarcoidosis with endobronchial US-guided transbronchial aspiration. Sarcoidosis Vasc Diffuse Lung Dis 2012; 29:82-89. [PMID: 23461069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) has a high diagnostic value in sarcoidosis if the obtained histological specimen is indicative of a non-caseating epithelioid-cell granuloma. However, EBUS-TBNA in sacoidosis sometimes affords solely cytological specimens. OBJECTIVE To investigate the relevance of EBUS-TBNA cytology specimens in diagnosing sarcoidosis. DESIGN The study population comprised 72 patients with sarcoidosis and 116 patients who had thoracic malignancies and intrathoracic lymphadenopathy but were eventually proven to be metastasis-free (controls). The EBUS-TBNA samples obtained for these subjects were blindly evaluated for the presence of epithelioid cell clusters by 2 independent cytoscreeners and a pathologist. RESULTS Interobserver variability in the specimen grading was minimal. The sensitivity and specificity were 65.3% and 94.0%, respectively. The sensitivity was high, at 87.5%, for the combined cytological and histological examinations. Of 7 controls whose cytological specimens showed epithelioid cell clusters, 3 were also deemed positive for sarcoidosis on histological examination, which indicated that they had sarcoid reaction to cancer. CONCLUSIONS Cytological evaluation of the EBUS-TBNA specimens had higher sensitivity than histological evaluation alone for intrathoracic lymphadenopathy due to sarcoidosis. It should be recognized, however, that up to 6% of patients with thoracic malignancy may have sarcoid reaction in non-metastatic lymph nodes.
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Affiliation(s)
- A Kitamura
- Department of Respirology, Graduate School of Medicine, Chiba University, Japan
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Tanaka H, Matsumoto K, Hiraishi M, Miyoshi T, Kaneko A, Tsuji T, Ryo K, Fukuda Y, Tatsumi K, Yoshida A, Kawai H, Hirata KI. Multidirectional left ventricular performance detected with three-dimensional speckle-tracking strain in patients with chronic right ventricular pacing and preserved ejection fraction. Eur Heart J Cardiovasc Imaging 2012; 13:849-56. [DOI: 10.1093/ehjci/jes056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kono C, Yamaguchi T, Yamada Y, Uchiyama H, Kono M, Takeuchi M, Sugiyamas Y, Azuma A, Kudoh S, Sakurai T, Tatsumi K. Historical changes in epidemiology of diffuse panbronchiolitis. Sarcoidosis Vasc Diffuse Lung Dis 2012; 29:19-25. [PMID: 23311119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND AND OBJECTIVE Japanese pulmonologists, experienced in treating patients with diffuse panbronchiolitis (DPB) prior to the 1980s, have uniformly observed that new incidences of DPB are now a rare event in Japan. However, there is no epidemiological data to support this observation. We examined epidemiological trends of the number of patients with DPB in a large company. DESIGN The computerized health records of JR East Company employees were used to identify patients with DPB and then these were followed up using the assessments of these patients in JR Tokyo General Hospital and two other JR hospitals. The whole study period was 27 years (1976-2003), although detailed analyses were carried out for three specific periods; the first was 1976-1980, the second was 1989-1993, and the third was 1999-2003. RESULTS In the first period, 11 DPB cases (four incidence, and seven prevalence) were detected among a total of 355,572 workers. In the second period, three DPB cases (one incidence, and two prevalence) were identified from a total of 180,359 workers. In the third period, no case was found in a total of 144,485 workers. CONCLUSION This epidemiological trend suggests that both the incidence and prevalence of DPB may have decreased.
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Affiliation(s)
- C Kono
- Department of Respiratory Medicine, Japan Railway Tokyo General Hospital, Japan. Japan
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Tatsumi K, Takeda Y, Suga K, Nakabe K. Turbulence characteristics and mixing performances of viscoelastic fluid flow in a serpentine microchannel. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/318/9/092020] [Citation(s) in RCA: 10] [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] [Indexed: 11/12/2022]
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Fujita K, Tatsumi K, Kondoh E, Chigusa Y, Mogami H, Fujii T, Yura S, Kakui K, Konishi I. Differential expression and the anti-apoptotic effect of human placental neurotrophins and their receptors. Placenta 2011; 32:737-44. [DOI: 10.1016/j.placenta.2011.07.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 06/30/2011] [Accepted: 07/01/2011] [Indexed: 01/25/2023]
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Utsunomiya T, Takahashi K, Tatsumi K, Ezcurra D. A prospective observational study to assess ease of learning, use and overall patient satisfaction of new follitrophin-alpha prefilled-pen, compared to the other systems of gonadotropin administration. Fertil Steril 2011. [DOI: 10.1016/j.fertnstert.2011.07.1124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Seto T, Yoshitake M, Ogasawara T, Ikari J, Sakamoto A, Hatano M, Hirata H, Fukuda T, Kuriyama T, Tatsumi K, Tokuhisa T, Arima M. Bcl6 in pulmonary epithelium coordinately controls the expression of the CC-type chemokine genes and attenuates allergic airway inflammation. Clin Exp Allergy 2011; 41:1568-78. [PMID: 21801248 DOI: 10.1111/j.1365-2222.2011.03836.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND There is synteny in the CC-type chemokine gene clusters between humans (CCL2/MCP-1, CCL7MCP-3, CCL11/eotaxin, CCL8/MCP-2, CCL13/MCP-4, and CCL1/I-309) and mice (CCL2, CCL7, CCL11, CCL12/MCP-5, CCL8, and CCL1). OBJECTIVE As many putative Bcl6/STAT-binding sequences are observed in the clusters, we examined the roles of a transcriptional repressor Bcl6 and the regional histone modification in the expression of these chemokine genes in pulmonary epithelium. METHODS We generated transgenic (Tg) mice carrying the Bcl6 or the dominant-negative (DN)-Bcl6 gene under the control of the surfactant protein C (SPC) promoter that induces the exogenous gene expression in the distal lung epithelium. For in vitro studies, A549, alveolar type II-like epithelial cell line transfected with the SPC-DN-Bcl6 gene were stimulated with IL-4+TNF-α, and Bcl6 or STAT6 binding to and histone modification of the cluster in the transfectants were analysed by chromatin immunoprecipitation assays. Tg mice sensitized with ovalbumin (OVA) were challenged with OVA inhalation. The amounts of mRNAs in each sample were analysed by quantitative RT-PCR. RESULTS The amount of Bcl6 bound to the cluster decreased in A549 cells stimulated with IL-4 and TNF-α, whereas STAT6 binding increased in association with regional histone H3-K9/14 acetylation and H3-K4 methylation. The expression of all chemokine genes in the gene cluster was augmented in activated A549 cells transfected with the DN-Bcl6 gene. We also induced allergic airway inflammation in Tg mice. Expression of the chemokine genes and infiltrated cell numbers in the lungs of these Tg mice with allergic airway inflammation were inversely correlated with the amount of Bcl6 in the lungs. CONCLUSION AND CLINICAL RELEVANCE Expression of the pulmonary epithelium-derived CC-type chemokine genes in the cluster is orchestrated by the conserved machinery related to Bcl6. Thus, Bcl6 in pulmonary epithelium may be a critical regulator for pathogenesis of various pulmonary inflammatory diseases.
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Affiliation(s)
- T Seto
- Department of Developmental Genetics (H2), Graduate School of Medicine, Chiba University, Chiba, Japan
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Sumi A, Sato Y, Kakui K, Tatsumi K, Fujiwara H, Konishi I. Prenatal diagnosis of anterior sacral meningocele. Ultrasound Obstet Gynecol 2011; 37:493-496. [PMID: 20882559 DOI: 10.1002/uog.8852] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/22/2010] [Indexed: 05/29/2023]
Abstract
Anterior sacral meningocele is an extremely rare condition and there has been only one previous report of a prenatal diagnosis. We report the case of a 36-year-old primigravida who was referred following detection of a huge fetal pelvic cyst on routine ultrasound examination at 19 + 4 weeks' gestation. Neither fetal ultrasound nor magnetic resonance imaging (MRI) at 20 + 5 weeks' gestation could detect communication between the cyst and the spinal cord. Because extension of the pear-shaped cyst through the pelvic diaphragm down to the perineum was reminiscent of dilated vagina and uterine cervix, a tentative diagnosis of hydrometrocolpos secondary to imperforate hymen was considered. On follow-up MRI at 33 + 5 weeks' gestation, a narrow stalk connecting the pelvic cyst and the spinal canal through the anterior sacral foramen was clearly delineated, allowing us to reach the prenatal diagnosis of anterior sacral meningocele.
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Affiliation(s)
- A Sumi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
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Izumi Y, Sato Y, Kakui K, Tatsumi K, Fujiwara H, Konishi I. Prenatal treatment of meconium peritonitis with urinary trypsin inhibitor. Ultrasound Obstet Gynecol 2011; 37:366-368. [PMID: 20878676 DOI: 10.1002/uog.8843] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Accepted: 09/10/2010] [Indexed: 05/29/2023]
Abstract
We describe a case of congenital meconium peritonitis with progressive fetal ascites and polyhydramnios. Fetal ascites could be only partially reduced on paracentesis at 29 weeks' gestation, and it subsequently increased. Urinary trypsin inhibitor (UTI), a physiological anti-inflammatory substance, was administered into the fetal abdominal cavity at a second paracentesis performed at 35 weeks' gestation. There was a significant amount of fetal ascites remaining 1 day after the second paracentesis, but this completely resolved within 5 days. A healthy infant was delivered vaginally and no surgical intervention was required. The case suggests that UTI can reduce meconium-induced chemical peritonitis and thereby facilitate intrauterine remission of fetal ascites.
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Affiliation(s)
- Y Izumi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
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Inoue N, Watanabe M, Morita M, Tomizawa R, Akamizu T, Tatsumi K, Hidaka Y, Iwatani Y. Association of functional polymorphisms related to the transcriptional level of FOXP3 with prognosis of autoimmune thyroid diseases. Clin Exp Immunol 2010; 162:402-6. [PMID: 20942809 PMCID: PMC3026543 DOI: 10.1111/j.1365-2249.2010.04229.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [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] [Accepted: 06/22/2010] [Indexed: 02/03/2023] Open
Abstract
The severity of Hashimoto's disease (HD) and intractability (or inducibility to remission) of Graves' disease (GD) varies among patients. Forkhead box P3 (FoxP3) is a crucial regulatory factor for the development and function of regulatory T (T(reg) ) cells, and deficiency of the FoxP3 gene (FOXP3) suppresses the regulatory function of T(reg) cells. To clarify the association of the functional polymorphisms of the FOXP3 with the prognosis of GD and HD, we genotyped -3499A/G, -3279C/A and -2383C/T polymorphisms in FOXP3 gene obtained from 38 patients with severe HD, 40 patients with mild HD, 65 patients with intractable GD, in whom remission was difficult to induce, 44 patients with GD in remission and 71 healthy volunteers. The -3279CA genotype was more frequent in patients with GD in remission than in patients with intractable GD, and the -3279AA genotype, which correlates to defective transcription of FOXP3, was absent in patients with GD in remission. The -2383CC genotype was more frequent in patients with severe HD than in those with mild HD. In conclusion, the -3279A/C polymorphism is related to the development and intractability of GD and the -2383CC genotype to the severity of HD.
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Affiliation(s)
- N Inoue
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Yamadaoka 1-7 Suita, Osaka, Japan
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Aghajanova L, Tatsumi K, Horcajadas JA, Zamah AM, Esteban FJ, Herndon CN, Conti M, Giudice LC. Unique transcriptome, pathways, and networks in the human endometrial fibroblast response to progesterone in endometriosis. Biol Reprod 2010; 84:801-15. [PMID: 20864642 DOI: 10.1095/biolreprod.110.086181] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Eutopic endometrium in endometriosis has molecular evidence of resistance to progesterone (P(4)) and activation of the PKA pathway in the stromal compartment. To investigate global and temporal responses of eutopic endometrium to P(4), we compared early (6-h), intermediate (48-h), and late (14-Day) transcriptomes, signaling pathways, and networks of human endometrial stromal fibroblasts (hESF) from women with endometriosis (hESF(endo)) with hESF from women without endometriosis (hESF(nonendo)). Endometrial biopsy samples were obtained from subjects with and without mild peritoneal endometriosis (n = 4 per group), and hESF were isolated and treated with P(4) (1 μM) plus estradiol (E(2)) (10 nM), E(2) alone (10 nM), or vehicle for up to 14 days. Total RNA was subjected to microarray analysis using a Gene 1.0 ST (Affymetrix) platform and analyzed by using bioinformatic algorithms, and data were validated by quantitative real-time PCR and ELISA. Results revealed unique kinetic expression of specific genes and unique pathways, distinct biological and molecular processes, and signaling pathways and networks during the early, intermediate, and late responses to P(4) in both hESF(nonendo) and hESF(endo), although a blunted response to P(4) was observed in the latter. The normal response of hESF to P(4) involves a tightly regulated kinetic cascade involving key components in the P(4) receptor and MAPK signaling pathways that results in inhibition of E(2)-mediated proliferation and eventual differentiation to the decidual phenotype, but this was not established in the hESF(endo) early response to P(4). The abnormal response of this cell type to P(4) may contribute to compromised embryonic implantation and infertility in women with endometriosis.
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Affiliation(s)
- L Aghajanova
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, CA, USA
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Fujimichi Y, Muto S, Tatsumi K, Kawano T, Yamane H. Quantitative determination of site occupancy of multi-rare-earth elements doped into Ca2SnO4 phosphor by electron channeling microanalysis. J SOLID STATE CHEM 2010. [DOI: 10.1016/j.jssc.2010.07.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tanooka H, Tatsumi K, Tsuji H, Noda Y, Katsube T, Ishii H, Ootsuyama A, Takeshita F, Ochiya T. Erratum: Mutant mouse p53 transgene elevates the chemical induction of tumors that respond to gene silencing with siRNA. Cancer Gene Ther 2009. [DOI: 10.1038/cgt.2009.81] [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: 11/09/2022]
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Tanooka H, Tatsumi K, Tsuji H, Noda Y, Katsube T, Ishii H, Ootsuyama A, Takeshita F, Ochiya T. Mutant mouse p53 transgene elevates the chemical induction of tumors that respond to gene silencing with siRNA. Cancer Gene Ther 2009; 17:1-10. [PMID: 19557034 DOI: 10.1038/cgt.2009.43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To study the role of mutant p53 in the induction and cure of tumors, we generated transgenic mice carrying mutant p53 (mp53) containing a 9 bp deletion in exon 6 in addition to wild-type p53, expressing both p53 and mp53. The mp53 cDNA was cloned from a radiation-induced mouse tumor and ligated to the chicken beta-actin promoter/CMV-IE enhancer in the expression vector. The presence of mp53 suppressed p21 expression in primary fibroblasts after ionizing irradiation, indicating the dominant-negative activity of mp53 in the mice. These mice developed fibrosarcomas after the subcutaneous injection of 3-methylcholanthrene with an incidence 1.7-fold higher than that of wild-type mice (42% excess). The tumors were then treated via a potent atelocollagen delivery system with small interfering RNA (siRNA), that targeted the promoter/enhancer of the expression vector, resulting in the suppression of tumor growth in 30% of 44 autochthonous tumors, including four cures, and their transplants, the total fraction corresponding to the tumor excess. This suppressive effect involved the induction of apoptosis. These results indicate that mp53 activity causes tumors that can be suppressed by subsequent silencing of mp53 in the presence of wild-type p53 alleles.
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Affiliation(s)
- H Tanooka
- Biological Effects Research Group, Research Center for Radiation Protection, National Institute of Radiological Sciences, Chiba, Japan.
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Tanaka H, Kawai H, Tatsumi K, Kataoka T, Onishi T, Yoshida A, Hirata KI. Large response to cardiac resynchronization therapy in a patient with segmental paradoxical systolic expansion identified by strain imaging. European Journal of Echocardiography 2009; 10:889-92. [DOI: 10.1093/ejechocard/jep091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ikeda K, Muto S, Tatsumi K, Menjo M, Kato S, Bielmann M, Züttel A, Jensen CM, Orimo S. Dehydriding reaction of AlH3: in situ microscopic observations combined with thermal and surface analyses. Nanotechnology 2009; 20:204004. [PMID: 19420652 DOI: 10.1088/0957-4484/20/20/204004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The dehydriding reaction of single-phase alpha- AlH3 was investigated by in situ microscopic observations combined with thermal and surface analyses. Before the dehydriding reaction, primary AlH3 particles of size 100 nm-1 microm were thought to be covered by an oxide layer with a thickness of less than 5 nm. Both the precipitation/grain-growth of metallic Al of size 1-50 nm and an increase in 'boundary space' were clearly observed inside the particles, while the morphologies of the particles covered by the layer did not change during the dehydriding reaction. This preliminary report provides fundamental information for a further study of AlH3 as a possible hydrogen storage material.
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Affiliation(s)
- K Ikeda
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Uehara H, Nakaizumi A, Ishikawa O, Iishi H, Tatsumi K, Takakura R, Ishida T, Takano Y, Tanaka S, Takenaka A. Development of ductal carcinoma of the pancreas during follow-up of branch duct intraductal papillary mucinous neoplasm of the pancreas. Gut 2008; 57:1561-5. [PMID: 18477671 DOI: 10.1136/gut.2007.145631] [Citation(s) in RCA: 200] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Synchronous occurrence of intraductal papillary mucinous neoplasm (IPMN) and ductal carcinoma of the pancreas has been reported. Branch duct IPMNs with lower likelihood of malignancy are not submitted to resection but are followed-up, so ductal carcinoma may develop during the follow-up. The development of ductal carcinoma of the pancreas during follow-up of branch duct IPMNs was investigated. METHODS 60 patients with branch duct IPMN who had an intraductal tumour of <10 mm on imaging examinations and a negative result for malignancy on cytological examination of the pancreatic juice were investigated. They were followed-up mainly by ultrasonography (US), and additionally by endoscopic ultrasonography (EUS), CT, magnetic resonance cholangiopancreatography (MRCP) or endoscopic retrograde cholangiopancreatography (ERCP) with cytological examination of the pancreatic juice for an average period of 87 months. RESULTS Ductal carcinoma of the pancreas distinct from IPMN developed in 5 of 60 (8%) branch duct IPMNs during follow-up. The 5-year rate of development of ductal carcinoma was 6.9% (95% CI 0.4% to 13.4%), the incidence of ductal carcinoma was 1.1% (95% CI 0.1% to 2.2%) per year and the standardised incidence ratio of development of ductal carcinoma was 26 (95% CI 3 to 48). Patients >70 years old developed ductal carcinoma significantly more frequently than those under 69. Four of five ductal carcinomas identified during follow-up were resectable. Cancer developed in IPMN in 2 of 60 (3%) branch duct IPMNs during follow-up. CONCLUSIONS During follow-up of branch duct IPMNs, ductal carcinoma of the pancreas not infrequently developed distinct from IPMN. In the follow-up of IPMN, special attention should be paid to the development of ductal carcinoma of the pancreas.
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Affiliation(s)
- H Uehara
- Department of Gastrointestinal Oncology, Osaka Medical Center for Cancer and Cardiovascular Diseases, 1-3-3 Nakamichi, Higashinari, Osaka 537-8511, Japan.
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Tatsumi K, Ohki Y. A new synthetic route to iron-sulfide clusters modeling the active site of nitrogenase. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308099376] [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: 11/11/2022] Open
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