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Kubo T, Sasaki K, Sato S, Minowa T, Hida T, Murata K, Kanaseki T, Tsukahara T, Hirohashi Y, Uhara H, Torigoe T. Distinct induction pathways of heat shock protein 27 in human keratinocytes: Heat stimulation or capsaicin through phosphorylation of heat shock factor 1 at serine 326 and/or suppression of ΔNp63. Biochem Biophys Res Commun 2024; 708:149817. [PMID: 38537528 DOI: 10.1016/j.bbrc.2024.149817] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/07/2024] [Accepted: 03/21/2024] [Indexed: 04/06/2024]
Abstract
Epidermal keratinocytes, forming the outermost layer of the human body, serve as a crucial barrier against diverse external stressors such as ultraviolet radiation. Proper keratinocyte differentiation and effective responses to external stimuli are pivotal for maintaining barrier integrity. Heat is one such stimulus that triggers the synthesis of heat shock proteins (HSPs) when cells are exposed to temperatures above 42 °C. Additionally, activation of the transient receptor potential cation channel subfamily V member 1 (TRPV1) occurs at 42 °C. Here, we explore the interplay between TRPV1 signaling and HSP induction in human keratinocytes. Both heat and capsaicin, a TRPV1 agonist, induce expression of HSP27, HSP70, and HSP90 in keratinocytes. Interestingly, pharmacological inhibition of TRPV1 attenuates heat-induced HSP27 expression, but not that of HSP70 or HSP90. Furthermore, both heat and capsaicin stimulation result in distinct phosphorylation patterns of heat shock factor 1 (HSF1), with phosphorylation at serine 326 being a common feature. Notably, genetic manipulation to mimic dephosphorylation of HSF1 at serine 326 reduces HSP27 levels. Additionally, ΔNp63, a key regulator of epidermal differentiation, negatively modulates HSP27 expression independently of HSF1 phosphorylation status. While heat stimulation has no effect on ΔNp63 expression, capsaicin reduces its levels. The precise role of TRPV1 signaling in keratinocytes warrants further investigation for a comprehensive understanding of its impact on barrier function.
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Affiliation(s)
- Terufumi Kubo
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan.
| | - Kenta Sasaki
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan; Department of Dermatology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Kenji Murata
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Takayuki Kanaseki
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Tomohide Tsukahara
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
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Shogase N, Minowa T, Kato J, Horimoto K, Sato S, Hida T, Hirohashi Y, Torigoe T, Uhara H. Characterization of CD4 T-cell phenotype in human leukocyte antigen class II-positive acral melanoma. J Dermatol 2024; 51:e170-e172. [PMID: 38078503 DOI: 10.1111/1346-8138.17070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 05/03/2024]
Affiliation(s)
- Nayuha Shogase
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Maeda R, Minowa T, Kato J, Horimoto K, Sato S, Hirohashi Y, Torigoe T, Uhara H. Analysis of the immune microenvironment in the indolent form of primary cutaneous extranodal natural killer/T-cell lymphoma: A case report. J Dermatol 2024; 51:e137-e138. [PMID: 37997464 DOI: 10.1111/1346-8138.17043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023]
Affiliation(s)
- Risako Maeda
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Sawada M, Hida T, Kamiya T, Minowa T, Kato J, Okura M, Idogawa M, Tokino T, Uhara H. Effects of temozolomide on tumor mutation burden and microsatellite instability in melanoma cells. J Dermatol 2024; 51:409-418. [PMID: 37658676 DOI: 10.1111/1346-8138.16925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 09/03/2023]
Abstract
The efficacy of combination therapy with an immune checkpoint inhibitor (ICI) and cytotoxic chemotherapeutic agents has been investigated in cancer, including melanoma. Before ICIs were introduced, dacarbazine or temozolomide (TMZ) were used to treat melanoma. Several studies using glioma or colorectal cancer cells showed that TMZ can increase the tumor mutation burden (TMB) and induce mismatch repair (MMR) deficiency associated with microsatellite instability (MSI). These could increase immunoreactivity to an ICI, but this has not been evaluated in melanoma cells. We investigated the effects of TMZ on MSI status and TMB in melanoma cells. To evaluate the TMB, we performed whole-exome sequencing using genomic DNA from the human melanoma cell lines Mel18, A375, WM266-4, G361, and TXM18 before and after TMZ treatment. Polymerase chain reaction amplification of five mononucleotide repeat markers, BAT25, BAT26, NR21, NR24, and MONO27, was performed, and we analyzed changes in the MSI status. In all cell lines, the TMB was increased after TMZ treatment (the change amount of TMB with ≤ 5% variant allele frequency [VAF] was 18.0-38.3 mutations per megabase) even in the condition without obvious cytological damage. MSI after TMZ treatment was not observed in any cells. TMZ increased TMB but did not change MSI status in melanoma cells.
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Affiliation(s)
- Masahide Sawada
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masae Okura
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masashi Idogawa
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takashi Tokino
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Wada A, Hirohashi Y, Kutomi G, Murata K, Iwabuchi S, Mizue Y, Murai A, Kyuno D, Shima H, Minowa T, Sasaki K, Kubo T, Kanaseki T, Tsukahara T, Nakatsugawa M, Hashimoto S, Osanai M, Torigoe T, Takemasa I. Eribulin is an immune potentiator in breast cancer that upregulates human leukocyte antigen class I expression via the induction of NOD-like receptor family CARD domain-containing 5. Cancer Sci 2023; 114:4511-4520. [PMID: 37991442 PMCID: PMC10728009 DOI: 10.1111/cas.15986] [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: 05/16/2023] [Revised: 09/10/2023] [Accepted: 09/18/2023] [Indexed: 11/23/2023] Open
Abstract
Eribulin inhibits microtubule polymerization and improves the overall survival of patients with recurrent metastatic breast cancer. A subgroup analysis revealed a low neutrophil to lymphocyte ratio (NLR) (<3) to be a prognostic factor of eribulin treatment. We thus hypothesized that eribulin might be related to the immune response for breast cancer cells and we analyzed the effects of eribulin on the immune system. Immunohistochemical staining revealed that human leukocyte antigen (HLA) class I expression was increased in clinical samples after eribulin treatment. In vitro assays revealed that eribulin treatment increased HLA class I expression in breast cancer line cells. RNA-sequencing demonstrated that eribulin treatment increased the expression of the NOD-like family CARD domain-containing 5 (NLRC5), a master regulator of HLA class I expression. Eribulin treatment increased the NY-ESO-1-specific T-cell receptor (TCR) transduced T (TCR-T) cell response for New York oesophageal squamous cell carcinoma 1 (NY-ESO-1) overexpressed breast cancer cells. The eribulin and TCR-T combined therapy model revealed that eribulin and immunotherapy using TCR-T cells has a synergistic effect. In summary, eribulin increases the expression of HLA class 1 via HLA class 1 transactivatior NLRC5 and eribulin combination with immunotherapy can be effective for the treatment of breast cancer.
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Affiliation(s)
- Asaka Wada
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
- Department of SurgerySapporo Medical University School of MedicineSapporoJapan
| | - Yoshihiko Hirohashi
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Goro Kutomi
- Department of SurgerySapporo Medical University School of MedicineSapporoJapan
| | - Kenji Murata
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Sadahiro Iwabuchi
- Department of Molecular PathophysiologyInstitute of Advanced Medicine, Wakayama Medical UniversityWakayamaJapan
| | - Yuka Mizue
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Aiko Murai
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Daisuke Kyuno
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
- Department of SurgerySapporo Medical University School of MedicineSapporoJapan
| | - Hiroaki Shima
- Department of SurgerySapporo Medical University School of MedicineSapporoJapan
| | - Tomoyuki Minowa
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Kenta Sasaki
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Terufumi Kubo
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Takayuki Kanaseki
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Tomohide Tsukahara
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Munehide Nakatsugawa
- Department of PathologyTokyo Medical University Hachioji Medical CenterTokyoJapan
| | - Shinichi Hashimoto
- Department of Molecular PathophysiologyInstitute of Advanced Medicine, Wakayama Medical UniversityWakayamaJapan
| | - Makoto Osanai
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Toshihiko Torigoe
- Department of PathologySapporo Medical University School of MedicineSapporoJapan
| | - Ichiro Takemasa
- Department of SurgerySapporo Medical University School of MedicineSapporoJapan
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Kato J, Hida T, Kamiya T, Horimoto K, Sato S, Sawada M, Minowa T, Handa T, Komatsu S, Uhara H. Relationships between tumor thickness and the risk of sentinel node metastasis in acral and non-acral melanoma. Int J Dermatol 2023; 62:e573-e575. [PMID: 37387547 DOI: 10.1111/ijd.16771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/17/2023] [Accepted: 06/16/2023] [Indexed: 07/01/2023]
Affiliation(s)
- Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Masahide Sawada
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Toshiya Handa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Sayuka Komatsu
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, 060-8543, Japan
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Minowa T, Hirohashi Y, Murata K, Sasaki K, Handa T, Nakatsugawa M, Mizue Y, Murai A, Kubo T, Kanaseki T, Tsukahara T, Iwabuchi S, Hashimoto S, Ishida-Yamamoto A, Uhara H, Torigoe T. Fusion with type 2 macrophages induces melanoma cell heterogeneity that potentiates immunological escape from cytotoxic T lymphocytes. J Pathol 2023. [PMID: 37138382 DOI: 10.1002/path.6083] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/05/2023] [Accepted: 03/27/2023] [Indexed: 05/05/2023]
Abstract
Evasion from immunity is a major obstacle to the achievement of successful cancer immunotherapy. Hybrids derived from cell-cell fusion are theoretically associated with tumor heterogeneity and progression by conferring novel properties on tumor cells, including drug resistance and metastatic capacity; however, their impact on immune evasion remains unknown. Here, we investigated the potency of tumor-macrophage hybrids in immune evasion. Hybrids were established by co-culture of a melanoma cell line (A375 cells) and type 2 macrophages. The hybrids showed greater migration ability and greater tumorigenicity than the parental melanoma cells. The hybrids showed heterogeneous sensitivity to New York esophageal squamous cell carcinoma-1 (NY-ESO-1)-specific T-cell receptor-transduced T (TCR-T) cells and two out of four hybrid clones showed less sensitivity to TCR-T compared with the parental cells. An in vitro tumor heterogeneity model revealed that the TCR-T cells preferentially killed the parental cells compared with the hybrids and the survival rate of the hybrids was higher than that of the parental cells, indicating that the hybrids evade killing by TCR-T cells efficiently. Analysis of a single-cell RNA sequencing dataset of patients with melanoma revealed that a few macrophages expressed RNA encoding melanoma differentiation antigens including melan A, tyrosinase, and premelanosome protein, which indicated the presence of hybrids in primary melanoma. In addition, the number of potential hybrids was correlated with a poorer response to immune checkpoint blockade. These results provide evidence that melanoma-macrophage fusion has a role in tumor heterogeneity and immune evasion. © 2023 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Tomoyuki Minowa
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kenji Murata
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kenta Sasaki
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Dermatology, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Toshiya Handa
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Munehide Nakatsugawa
- Department of Pathology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Yuka Mizue
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Aiko Murai
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Terufumi Kubo
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takayuki Kanaseki
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomohide Tsukahara
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | | | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Sasaki K, Hirohashi Y, Murata K, Minowa T, Nakatsugawa M, Murai A, Mizue Y, Kubo T, Kanaseki T, Tsukahara T, Iwabuchi S, Hashimoto S, Uhara H, Ishida-Yamamoto A, Torigoe T. SOX10 Inhibits T Cell Recognition by Inducing Expression of the Immune Checkpoint Molecule PD-L1 in A375 Melanoma Cells. Anticancer Res 2023; 43:1477-1484. [PMID: 36974807 DOI: 10.21873/anticanres.16296] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/05/2023] [Accepted: 01/23/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND/AIM Malignant melanoma is a fatal skin cancer and is among the most immunogenic malignancies expressing melanoma-differentiation antigens and neoantigens. SRY-related HMG-box 10 (SOX10) is a transcription factor and a neural-crest differentiation marker that is used as a diagnostic marker for melanoma whilst playing a role in melanoma initiation through activation of the SOX10-MITF axis. SOX10 was shown to play a role in melanoma initiation by inducing expression of immune checkpoint molecules (e.g., HVEM and CEACAM1). In this study, we aimed to investigate the relationship between SOX10 and the expression an immune checkpoint molecule, programmed death-1 ligand 1 (PD-L1). MATERIALS AND METHODS SOX10 overexpression and knockdown was performed using SOX10 gene transfection and SOX10 siRNA transfection into A375 melanoma cells. PD-L1 expression was assessed by flow cytometry and western blotting. T cell response was evaluated using NY-ESO-1 specific TCR-transduced T (TCR-T) cells by IFNγ ELISPOT assay. RESULTS SOX10 overexpression increased the expression of PD-L1, whereas SOX10 knockdown, using siRNA, decreased its expression. IFNγ ELISPOT assay revealed that overexpression of SOX10 decreased the susceptibility of cells to NY-ESO-1-specific TCR-T cells. CONCLUSION SOX10 has a role in the intrinsic immune suppressive mechanisms of melanoma through expression of PD-L1.
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Affiliation(s)
- Kenta Sasaki
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Dermatology, Asahikawa Medical University School of Medicine, Hokkaido, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan;
| | - Kenji Murata
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Munehide Nakatsugawa
- Department of Pathology, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Aiko Murai
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuka Mizue
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Terufumi Kubo
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takayuki Kanaseki
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomohide Tsukahara
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Akemi Ishida-Yamamoto
- Department of Dermatology, Asahikawa Medical University School of Medicine, Hokkaido, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan;
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9
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Yamada S, Miyata H, Isono M, Hori K, Yanagawa J, Murai A, Minowa T, Mizue Y, Sasaki K, Murata K, Tokita S, Nakatsugawa M, Iwabuchi S, Hashimoto S, Kubo T, Kanaseki T, Tsukahara T, Abe T, Shinohara N, Hirohashi Y, Torigoe T. Cisplatin resistance driver claspin is a target for immunotherapy in urothelial carcinoma. Cancer Immunol Immunother 2023:10.1007/s00262-023-03388-5. [PMID: 36795123 DOI: 10.1007/s00262-023-03388-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/25/2023] [Indexed: 02/17/2023]
Abstract
Bladder cancer is a major and fatal urological disease. Cisplatin is a key drug for the treatment of bladder cancer, especially in muscle-invasive cases. In most cases of bladder cancer, cisplatin is effective; however, resistance to cisplatin has a significant negative impact on prognosis. Thus, a treatment strategy for cisplatin-resistant bladder cancer is essential to improve the prognosis. In this study, we established a cisplatin-resistant (CR) bladder cancer cell line using an urothelial carcinoma cell lines (UM-UC-3 and J82). We screened for potential targets in CR cells and found that claspin (CLSPN) was overexpressed. CLSPN mRNA knockdown revealed that CLSPN had a role in cisplatin resistance in CR cells. In our previous study, we identified human leukocyte antigen (HLA)-A*02:01-restricted CLSPN peptide by HLA ligandome analysis. Thus, we generated a CLSPN peptide-specific cytotoxic T lymphocyte clone that recognized CR cells at a higher level than wild-type UM-UC-3 cells. These findings indicate that CLSPN is a driver of cisplatin resistance and CLSPN peptide-specific immunotherapy may be effective for cisplatin-resistant cases.
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Affiliation(s)
- Shuhei Yamada
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.,Department of Renal and Genitourinary Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, 060-8648, Japan
| | - Haruka Miyata
- Department of Renal and Genitourinary Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, 060-8648, Japan
| | - Makoto Isono
- Department of Urology, Abiko Toho Hospital, Abiko, 270-1166, Japan
| | - Kanta Hori
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.,Department of Renal and Genitourinary Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, 060-8648, Japan
| | - Junko Yanagawa
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Aiko Murai
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Tomoyuki Minowa
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.,Departments of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8556, Japan
| | - Yuka Mizue
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Kenta Sasaki
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.,Department of Dermatology, Asahikawa Medical University School of Medicine, Asahikawa, Hokkaido, 078-8510, Japan
| | - Kenji Murata
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Serina Tokita
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Munehide Nakatsugawa
- Department of Pathology, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, 193-0998, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Wakayama, 641-8509, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Wakayama, 641-8509, Japan
| | - Terufumi Kubo
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Takayuki Kanaseki
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Tomohide Tsukahara
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan
| | - Takashige Abe
- Department of Renal and Genitourinary Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, 060-8648, Japan
| | - Nobuo Shinohara
- Department of Renal and Genitourinary Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, 060-8648, Japan
| | - Yoshihiko Hirohashi
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.
| | - Toshihiko Torigoe
- Departments of Pathology, Sapporo Medical University School of Medicine, South-1 West-17, Chuo-Ku, Sapporo, Hokkaido, 060-8556, Japan.
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10
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Yoneta D, Kato J, Kamiya T, Horimoto K, Sato S, Sawada M, Minowa T, Hida T, Sugita S, Uhara H. Difference in immunohistochemical findings among anti-PD-L1 antibodies and their relationships with CD4+ and CD8+ T cells in Japanese melanoma patients. Int J Clin Oncol 2022; 27:1364-1371. [PMID: 35650364 DOI: 10.1007/s10147-022-02189-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 05/06/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The immunohistochemical evaluation of programmed death ligand 1 (PD-L1) is important for selecting treatments. Several antibodies are available for such evaluations, but data regarding the differences in the antibodies' positivity are limited in melanoma, particularly the acral and mucosal types. We investigated the differences in melanoma tissues' PD-L1 expression among the commonly used PD-L1 antibodies and then evaluated the relationship between PD-L1+ tumor cells and tumor-infiltrating lymphocytes (TILs). PATIENTS AND METHODS We examined 56 primary lesions and 8 metastatic lymph node samples from 56 Japanese patients with melanoma (28 acral melanoma, 8 mucosal melanoma, 18 cutaneous melanoma, 2 unknown). Immunohistochemical staining was performed using three primary antibodies against PD-L1 (E1L3N, SP142, and 28-8). PD-L1-positive staining in tumor cells was defined as ≥ 1% expression. RESULTS The positive rates were 25.0% for 28-8, 34.0% for E1L3N, and 34.0% for SP142 in 64 samples. The positive rates of acral melanoma were 10.7% for 28-8, 21.4% for E1L3N, and 21.4% for SP142. The positive rate of mucosal melanoma for which all three antibodies reacted was 12.5%. The positive rates of cutaneous melanoma were 55.6% for 28-8, 66.7% for E1L3N, and 66.7% for SP142. Significant relationships were observed among the PD-L1+ tumor cells, CD4+ TILs, and CD8+ TILs (p < 0.001). CONCLUSION The staining results by E1L3N, SP142, and 28-8 antibodies were within the allowable range, although the positive rates by E1L3N and P142 were slightly higher than that of 28-8. CD4+ TILs and CD8+ TILs were quantitatively correlated with PD-L1-positive tumor cells.
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Affiliation(s)
- Daisuke Yoneta
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Masahide Sawada
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan
| | - Shintaro Sugita
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo, 060-8543, Japan.
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11
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Handa T, Kamiya T, Kan Y, Hida T, Sumikawa Y, Minowa T, Uhara H. Anogenital skin necrosis with fibrin thrombosis induced by crotamiton. Contact Dermatitis 2021; 86:221-223. [PMID: 34729785 DOI: 10.1111/cod.14001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Toshiya Handa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Yuji Kan
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Yasuyuki Sumikawa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
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12
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Minowa T, Kamiya T, Hida T, Okura M, Kato J, Idogawa M, Tange S, Hirano T, Tokino T, Uhara H. Genetic analyses of a secondary poroma and trichoblastoma in a HRAS-mutated sebaceous nevus. J Dermatol 2021; 48:1268-1272. [PMID: 33908086 DOI: 10.1111/1346-8138.15919] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/01/2021] [Accepted: 04/03/2021] [Indexed: 11/30/2022]
Abstract
A sebaceous nevus is a congenital skin hamartoma caused by postzygotic HRAS or KRAS mosaic mutations. With age, affected individuals may develop secondary tumors within a sebaceous nevus. RAS mutations are harbored from the onset of sebaceous nevus, and further mutations can be expected to be required in order to explain the initiation of secondary tumors. However, genetic analyses of the secondary tumors have not been conducted. Herein, we describe the rare coexistence of a poroma and a trichoblastoma arising in a sebaceous nevus. This is the first report of an investigation of multiple genes in a secondary tumor in an SN. First, HRAS c.37G>C, which is the common mutation in sebaceous nevus, was detected in all three lesions (sebaceous nevus, poroma, and trichoblastoma). Next, to elucidate the potential second-hit mutations in the secondary poroma and trichoblastoma, we applied a panel sequencing for skin cancers that was newly developed in our institution. Our comparison of the mutational profile of 95 skin cancer-related genes in each of the three lesions newly revealed TP53 p.R158P in the poroma and NOTCH2 p.G329S in the trichoblastoma. TP53 p.R158P has been determined as a pathogenic mutation in other tumors, and NOTCH2 p.G329S was a novel mutation. We identified two novel mutations that may have contributed to the pathogenesis of the secondary tumor's development. The roles of the mutations remain unclear.
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Affiliation(s)
- Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masae Okura
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masashi Idogawa
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Shoichiro Tange
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomomi Hirano
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takashi Tokino
- Department of Medical Genome Sciences, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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13
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Kubo T, Sato S, Hida T, Minowa T, Hirohashi Y, Tsukahara T, Kanaseki T, Murata K, Uhara H, Torigoe T. IL-13 modulates ∆Np63 levels causing altered expression of barrier- and inflammation-related molecules in human keratinocytes: A possible explanation for chronicity of atopic dermatitis. Immun Inflamm Dis 2021; 9:734-745. [PMID: 33792188 PMCID: PMC8342210 DOI: 10.1002/iid3.427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Barrier disruption and an excessive immune response in keratinocytes are now considered to have important roles in the pathophysiology of atopic dermatitis (AD). Furthermore, disturbed keratinocyte differentiation is considered to underlie AD. ΔNp63, a p53-like transcription factor, is a major regulator of keratinocyte differentiation. However, the functional significance of ΔNp63 in AD has not been clarified. OBJECTIVE In this study, we aimed to investigate the influence of the type 2 inflammatory environment on ΔNp63 expression and AD-associated molecules regulated by ΔNp63 in keratinocytes. METHODS The immunohistochemical expression profiles of ΔNp63 and AD-related molecules were evaluated in human skin tissue. The function of ΔNp63 in the regulation of AD-related molecules and the influence of the type 2 inflammatory environment on ΔNp63 expression were investigated using human primary keratinocytes. Expression of ΔNp63 was manipulated using the RNA interfering method. RESULTS In healthy skin tissue, we observed an inverse expression pattern between ∆Np63 and some barrier-related proteins including filaggrin, caspase-14, claudin-1, and claudin-4. ΔNp63 regulated expression of these genes and proteins. In addition, production of IL-1β and IL-33, pro-inflammatory cytokines, was modulated by ΔNp63. Furthermore, prolonged IL-13 exposure increased the thickness of the three-dimensional culture of keratinocytes. IL-13 interfered with ΔNp63 downregulation during calcium-induced keratinocyte differentiation. IL-13 modulated some barrier-related and inflammation-related molecules, which were regulated by ΔNp63. CONCLUSIONS We have shown that ΔNp63 modulated AD-related barrier and inflammatory molecules. In addition, ΔNp63 expression was affected by IL-4/IL-13. IL-13-ΔNp63 axis would integrate two major factors of AD pathogenesis: dysregulated barrier and inflammation.
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Affiliation(s)
- Terufumi Kubo
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan.,Department of Dermatology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Tomohide Tsukahara
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Takayuki Kanaseki
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Kenji Murata
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, School of Medicine, Sapporo Medical University, Sapporo, Japan
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14
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Minowa T, Sumikawa Y, Kumagai A, Kamiya T, Uhara H. Two cases of angioedema without wheals induced by exercising or bathing. Allergol Int 2020; 69:648-649. [PMID: 32451176 DOI: 10.1016/j.alit.2020.04.011] [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] [Received: 02/19/2020] [Revised: 04/10/2020] [Accepted: 04/19/2020] [Indexed: 10/24/2022] Open
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15
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Minowa T, Sumikawa Y, Kan Y, Kamiya T, Uhara H. Regular sweating activities for the treatment of cholinergic urticaria with or without acquired idiopathic generalized anhidrosis. Dermatol Ther 2020; 33:e13647. [PMID: 32445244 DOI: 10.1111/dth.13647] [Citation(s) in RCA: 4] [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: 03/17/2020] [Revised: 05/14/2020] [Accepted: 05/18/2020] [Indexed: 11/30/2022]
Abstract
Cholinergic urticaria (CholU) decreases affected individuals' quality of life because they must avoid stimuli including exercise and hot bathing. Although case reports have indicated that regular sweating activities are effective for CholU with hypohidrosis, little evidence is available. This retrospective medical record review examined CholU patients who received any form of treatment at our hospital. Twenty-seven cases (78% men; median age 22 years, range 12-70 years) were analyzed. Fourteen (52%) patients had acquired idiopathic generalized anhidrosis (AIGA). Among the 12 patients receiving sweating therapy (4 with, 8 without AIGA), improvement of symptoms was confirmed in 11 (92%; sweating therapy alone: n = 5, with H1 blocker: n = 5, with steroid pulse: n = 1) including 8 (67%) showing complete response (CR). In this sweating-therapy group, CR was achieved by six of the eight (75%) patients without AIGA and two of the four (50%) patients with AIGA. Among the 15 patients without sweating therapy, symptom improvement was observed in 9 (60%; steroid pulse: n = 7, H1 blocker: n = 2) including 1 (7%) achieving CR. Sweating therapy was safely undertaken except in one case in which the patient showed angioedema and anaphylaxis. Regular sweating activities could be a potential therapeutic option for CholU patients.
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Affiliation(s)
- Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yasuyuki Sumikawa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuji Kan
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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16
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Handa T, Kato J, Sumikawa Y, Hida T, Horimoto K, Sato S, Sawada M, Fujioka M, Minowa T, Matsui Y, Uhara H. Durable response after cessation of anti‐programmed death 1 therapy in four melanoma patients. J Dermatol 2019; 46:e461-e462. [DOI: 10.1111/1346-8138.15095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiya Handa
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Junji Kato
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Yasuyuki Sumikawa
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Tokimasa Hida
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Kohei Horimoto
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Sayuri Sato
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Masahide Sawada
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Mao Fujioka
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Tomoyuki Minowa
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Yoshiyuki Matsui
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Hisashi Uhara
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
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17
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Kato J, Horimoto K, Sato S, Minowa T, Uhara H. Dermoscopy of Melanoma and Non-melanoma Skin Cancers. Front Med (Lausanne) 2019; 6:180. [PMID: 31497603 PMCID: PMC6712997 DOI: 10.3389/fmed.2019.00180] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 07/29/2019] [Indexed: 12/24/2022] Open
Abstract
Dermoscopy is a widely used non-invasive technique for diagnosing skin tumors. In melanocytic tumors, e.g., melanoma and basal cell carcinoma (BCC), the effectiveness of dermoscopic examination has been fully established over the past two decades. Moreover, dermoscopy has been used to diagnose non-melanocytic tumors. Here, we review novel findings from recent reports concerning dermoscopy of melanoma and non-melanoma skin cancers including BCC, sebaceous carcinoma, actinic keratosis, Bowen's disease, squamous cell carcinoma (SCC), Merkel cell carcinoma (MCC), extramammary Paget's disease (EMPD), and angiosarcoma.
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Affiliation(s)
- Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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18
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Handa T, Kamiya T, Sumikawa Y, Minowa T, Kumagai A, Sawada M, Uhara H. Decrease of Anti-DSG3, but Not Anti-DSG1 Antibody, After Cessation of Sitagliptin Treatment in a Patient With Pemphigus Vulgaris. JAMA Dermatol 2019; 155:391-393. [DOI: 10.1001/jamadermatol.2018.5379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Toshiya Handa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Takafumi Kamiya
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Yasuyuki Sumikawa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Ayako Kumagai
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Masahide Sawada
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University, Sapporo, Japan
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19
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Kato J, Hida T, Someya M, Sato S, Sawada M, Horimoto K, Fujioka M, Minowa T, Matsui Y, Tsuchiya T, Kitagawa M, Nakata K, Sakata K, Torigoe T, Uhara H. Efficacy of combined radiotherapy and anti‐programmed death 1 therapy in acral and mucosal melanoma. J Dermatol 2019; 46:328-333. [DOI: 10.1111/1346-8138.14805] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/10/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Junji Kato
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Tokimasa Hida
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Masanori Someya
- Department of Radiology Sapporo Medical University School of Medicine Sapporo Japan
| | - Sayuri Sato
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Masahide Sawada
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Kohei Horimoto
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Mao Fujioka
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Tomoyuki Minowa
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Yoshiyuki Matsui
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
| | - Takaaki Tsuchiya
- Department of Radiology Sapporo Medical University School of Medicine Sapporo Japan
| | - Mio Kitagawa
- Department of Radiology Sapporo Medical University School of Medicine Sapporo Japan
| | - Kensei Nakata
- Department of Radiology Sapporo Medical University School of Medicine Sapporo Japan
| | - Koh‐ichi Sakata
- Department of Radiology Sapporo Medical University School of Medicine Sapporo Japan
| | - Toshihiko Torigoe
- Department of Pathology Sapporo Medical University School of Medicine Sapporo Japan
| | - Hisashi Uhara
- Department of Dermatology Sapporo Medical University School of Medicine Sapporo Japan
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20
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Minowa T, Sumikawa Y, Hida T, Uhara H. Transient hypogammaglobulinemia of infancy with no evidence of immunodeficiency other than atopic dermatitis: A case report and review of literature. J Cutan Immunol Allergy 2018. [DOI: 10.1002/cia2.12037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Tomoyuki Minowa
- Department of DermatologySapporo Medical University School of Medicine Sapporo Japan
| | - Yasuyuki Sumikawa
- Department of DermatologySapporo Medical University School of Medicine Sapporo Japan
| | - Tokimasa Hida
- Department of DermatologySapporo Medical University School of Medicine Sapporo Japan
| | - Hisashi Uhara
- Department of DermatologySapporo Medical University School of Medicine Sapporo Japan
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21
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Minowa T, Kato J, Hida T, Horimoto K, Sato S, Sawada M, Takahashi H, Uhara H. Granulocyte colony-stimulating factor-producing melanoma treated with the combination of dabrafenib and trametinib. Int J Dermatol 2018; 57:e31-e33. [PMID: 29655274 DOI: 10.1111/ijd.14004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/09/2017] [Revised: 02/12/2018] [Accepted: 03/18/2018] [Indexed: 12/01/2022]
Affiliation(s)
- T Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - J Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - T Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - K Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - S Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - M Sawada
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - H Takahashi
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - H Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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22
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Minowa T, Kato J, Hida T, Horimoto K, Sato S, Sawada M, Uhara H. Prognostic role of neutrophil to lymphocyte ratio in advanced melanoma treated with anti-programmed death-1 therapy. J Dermatol 2018; 45:e250-e251. [PMID: 29572922 DOI: 10.1111/1346-8138.14297] [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] [Indexed: 01/04/2023]
Affiliation(s)
- Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tokimasa Hida
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Masahide Sawada
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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23
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Nguyen TB, Sakata-Yanagimoto M, Asabe Y, Matsubara D, Kano J, Yoshida K, Shiraishi Y, Chiba K, Tanaka H, Miyano S, Izutsu K, Nakamura N, Takeuchi K, Miyoshi H, Ohshima K, Minowa T, Ogawa S, Noguchi M, Chiba S. Identification of cell-type-specific mutations in nodal T-cell lymphomas. Blood Cancer J 2017; 7:e516. [PMID: 28157189 PMCID: PMC5301031 DOI: 10.1038/bcj.2016.122] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/07/2016] [Indexed: 12/26/2022] Open
Abstract
Recent genetic analysis has identified frequent mutations in ten-eleven translocation 2 (TET2), DNA methyltransferase 3A (DNMT3A), isocitrate dehydrogenase 2 (IDH2) and ras homolog family member A (RHOA) in nodal T-cell lymphomas, including angioimmunoblastic T-cell lymphoma and peripheral T-cell lymphoma, not otherwise specified. We examined the distribution of mutations in these subtypes of mature T-/natural killer cell neoplasms to determine their clonal architecture. Targeted sequencing was performed for 71 genes in tumor-derived DNA of 87 cases. The mutations were then analyzed in a programmed death-1 (PD1)-positive population enriched with tumor cells and CD20-positive B cells purified by laser microdissection from 19 cases. TET2 and DNMT3A mutations were identified in both the PD1+ cells and the CD20+ cells in 15/16 and 4/7 cases, respectively. All the RHOA and IDH2 mutations were confined to the PD1+ cells, indicating that some, including RHOA and IDH2 mutations, being specific events in tumor cells. Notably, we found that all NOTCH1 mutations were detected only in the CD20+ cells. In conclusion, we identified both B- as well as T-cell-specific mutations, and mutations common to both T and B cells. These findings indicate the expansion of a clone after multistep and multilineal acquisition of gene mutations.
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Affiliation(s)
- T B Nguyen
- Department of Hematology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam.,Stem Cell Transplantation Zone, Blood Transfusion Hematology Hospital, Ho Chi Minh City, Vietnam
| | - M Sakata-Yanagimoto
- Department of Hematology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Hematology, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
| | - Y Asabe
- Department of Hematology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - D Matsubara
- Department of Integrative Pathology, Jichii Medical University, Shimotsuke, Tochigi, Japan
| | - J Kano
- Department of Pathology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Shiraishi
- Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - K Chiba
- Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - H Tanaka
- Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - S Miyano
- Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - K Izutsu
- Department of Hematology, Toranomon Hospital, Tokyo, Japan.,Okinaka Memorial Institute for Medical Research, Tokyo, Japan
| | - N Nakamura
- Department of Pathology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - K Takeuchi
- Pathology Project for Molecular Targets, The Cancer Institute, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - H Miyoshi
- Department of Pathology, Kurume University, Kurume, Fukuoka, Japan
| | - K Ohshima
- Department of Pathology, Kurume University, Kurume, Fukuoka, Japan
| | - T Minowa
- Nanotechnology Innovation Station, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - S Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Noguchi
- Department of Pathology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - S Chiba
- Department of Hematology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Hematology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Hematology, University of Tsukuba Hospital, Tsukuba, Ibaraki, Japan
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24
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Minowa T, Kawano K, Kuribayashi H, Shiraishi K, Sugino T, Hattori Y, Yokoyama M, Maitani Y. Increase in tumour permeability following TGF-beta type I receptor-inhibitor treatment observed by dynamic contrast-enhanced MRI. Br J Cancer 2009; 101:1884-90. [PMID: 19888220 PMCID: PMC2788254 DOI: 10.1038/sj.bjc.6605367] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background: To enhance the success rate of nanocarrier-mediated chemotherapy combined with an anti-angiogenic agent, it is crucial to identify parameters for tumour vasculature that can predict a response to the treatment of the anti-angiogenic agent. Methods: To apply transforming growth factor (TGF)-β type I receptor (TβR-I) inhibitor, A-83-01, to combined therapy, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) was carried out in mice bearing colon 26 cells using gadolinium (Gd)-DTPA and for its liposomal formulation to evaluate changes in tumour microvasculature following A-83-01. Tumour vascular parameters from DCE-MRI were compared with histological assessment and apparent diffusion coefficient of water in tumour generated by diffusion-weighted MRI. Results: Contrary to evaluations reported for anti-angiogenic agents, A-83-01 treatment increased the initial area under the Gd concentration–time curve (IAUGC60), volume transfer constant (Ktrans) and fractional plasma volume (vp) significantly within 24 h, that was positively related to α-smooth muscle actin-positive pericyte coverage and tumour cell proliferation, and was correlated inversely with the apparent diffusion coefficient. The vascular function of the tumour improved by A-83-01 treatment was well assessed on post-liposomal Gd-DTPA-enhanced MR images, which predicted delivery of a liposomal drug to the tumour. Conclusion: These findings suggest that DCE-MRI and, in particular, Ktrans and vp quantitation, provide important additional information about tumour vasculature by A-83-01 treatment.
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Affiliation(s)
- T Minowa
- Institute of Medicinal Chemistry, Hoshi University, Ebara 2-4-41, Shinagawa, Tokyo 142-8501, Japan
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25
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Nakamura H, Hirota K, Minowa T, Honshima M. Coercivity of Nd-Fe-B Sintered Magnets Produced by the Grain Boundary Diffusion Process with Various Rare-Earth Compounds. ACTA ACUST UNITED AC 2007. [DOI: 10.3379/jmsjmag.31.6] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Tsukahara K, Kimura T, Minowa T, Sawayama S, Yagishita T, Inoue S, Hanaoka T, Usui Y, Ogi T. Microalgal cultivation in a solution recovered from the low-temperature catalytic gasification of the microalga. J Biosci Bioeng 2005; 91:311-3. [PMID: 16232995 DOI: 10.1263/jbb.91.311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2000] [Accepted: 12/02/2000] [Indexed: 11/17/2022]
Abstract
Microalgal cultivation in a solution recovered from the low-temperature catalytic gasification of the microalga itself was studied. The growth of Chlorella vulgaris in 75-300-fold diluted recovered solution containing phosphate, magnesium ions and micro-elements was comparable to that in the standard culture medium. It was suggested that C. vulgaris could use ammonium in the recovered solution as its nitrogen source and at the same time could provide a source of biomass which was recycled via gasification.
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Affiliation(s)
- K Tsukahara
- National Institute for Resources and Environment, AIST, MITI, 16-3 Onogawa, Tsukuba, Ibaraki 305-8569, Japan.
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27
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Fang Z, Minowa T, Smith, RL, Ogi T, Koziński JA. Liquefaction and Gasification of Cellulose with Na2CO3 and Ni in Subcritical Water at 350 °C. Ind Eng Chem Res 2004. [DOI: 10.1021/ie034146t] [Citation(s) in RCA: 128] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Z. Fang
- Energy and Environmental Research Group, Department of Metals and Materials Engineering, McGill University, 3610 University Street, Wong Building, Room 2290, Montreal, Quebec, Canada H3A 2B2, Biomass Technology Research Laboratory, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hiro Suehiro, Kure, Hiroshima 737-0197, Japan, Research Center of Supercritical Fluid Technology, Department of Chemical Engineering, Tohoku University, Aoba-ku Aramaki Aza Aoba-04, Sendai 980-8579, Japan,
| | - T. Minowa
- Energy and Environmental Research Group, Department of Metals and Materials Engineering, McGill University, 3610 University Street, Wong Building, Room 2290, Montreal, Quebec, Canada H3A 2B2, Biomass Technology Research Laboratory, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hiro Suehiro, Kure, Hiroshima 737-0197, Japan, Research Center of Supercritical Fluid Technology, Department of Chemical Engineering, Tohoku University, Aoba-ku Aramaki Aza Aoba-04, Sendai 980-8579, Japan,
| | - R. L. Smith,
- Energy and Environmental Research Group, Department of Metals and Materials Engineering, McGill University, 3610 University Street, Wong Building, Room 2290, Montreal, Quebec, Canada H3A 2B2, Biomass Technology Research Laboratory, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hiro Suehiro, Kure, Hiroshima 737-0197, Japan, Research Center of Supercritical Fluid Technology, Department of Chemical Engineering, Tohoku University, Aoba-ku Aramaki Aza Aoba-04, Sendai 980-8579, Japan,
| | - T. Ogi
- Energy and Environmental Research Group, Department of Metals and Materials Engineering, McGill University, 3610 University Street, Wong Building, Room 2290, Montreal, Quebec, Canada H3A 2B2, Biomass Technology Research Laboratory, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hiro Suehiro, Kure, Hiroshima 737-0197, Japan, Research Center of Supercritical Fluid Technology, Department of Chemical Engineering, Tohoku University, Aoba-ku Aramaki Aza Aoba-04, Sendai 980-8579, Japan,
| | - J. A. Koziński
- Energy and Environmental Research Group, Department of Metals and Materials Engineering, McGill University, 3610 University Street, Wong Building, Room 2290, Montreal, Quebec, Canada H3A 2B2, Biomass Technology Research Laboratory, National Institute of Advanced Industrial Science and Technology, 2-2-2 Hiro Suehiro, Kure, Hiroshima 737-0197, Japan, Research Center of Supercritical Fluid Technology, Department of Chemical Engineering, Tohoku University, Aoba-ku Aramaki Aza Aoba-04, Sendai 980-8579, Japan,
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28
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Koshika M, Shimazaki Y, Watanabe T, Inui K, Minowa T, Hosaka J, Uchida T, Toyama S. [Successful total arch replacement for a 92-year-old woman with acute Stanford A aortic dissection: report of a case]. Kyobu Geka 2003; 56:973-6. [PMID: 14579703] [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: 04/27/2023]
Abstract
We reported a successful case of emergent total arch replacement for a nonagenarian with acute Stanford A aortic dissection. A 92-year-old woman complained of general fatigue, with hypotension. Echocardiography showed moderate pericardial effusion and aortic regurgitation. Computed tomography (CT) scan showed widely extended aortic dissection from the ascending aorta to descending thoracic aorta, and cardiac tamponade. An emergent total arch replacement was performed under hypothermic selective cerebral perfusion with bladder temperature of 22.5 degrees C. Although she suffered from pneumothorax, renal insufficiency and gastrointestinal (GI) bleeding postoperatively, she tolerated the operation and complications, well. She is now leading a good life with the same level of activities of daily living (ADL) as preoperative one.
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Affiliation(s)
- M Koshika
- Department of Second Surgery, Yamagata University School of Medicine, Yamagata, Japan
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29
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Takahashi T, Shimazaki Y, Watanabe T, Minowa T, Koshika M, Inui K, Hosaka J, Toyama S. Staged perfusion with an axillary artery graft and deep hypothermia during descending aortic replacement. J Thorac Cardiovasc Surg 2001; 122:188-9. [PMID: 11436058 DOI: 10.1067/mtc.2001.113327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- T Takahashi
- Second Department of Surgery, Yamagata University School of Medicine, Yamagata, Japan.
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30
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Takahashi T, Shimazaki Y, Watanabe T, Minowa T, Uchida T, Toyama S. Concomitant aortic arch and root replacement using a stentless xenograft for acute type A dissection. Jpn J Thorac Cardiovasc Surg 2001; 49:365-7. [PMID: 11481839 DOI: 10.1007/bf02913151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A 78-year-old woman with an aortic root aneurysm and aortic regurgitation developing acute type A dissection successfully underwent aortic root replacement using a stentless xenograft during core cooling, followed by total aortic arch replacement under selective cerebral perfusion with deep hypothermia. This bioprosthesis can be used in the same way as a free-hand homograft and potentially provides an aggressive, safe option for acute aortic dissection requiring aortic root reconstruction in elderly patients.
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Affiliation(s)
- T Takahashi
- Second Department of Surgery, Yamagata University Medical School, Yamagata, Japan
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31
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Miwi H, Murai T, Sato K, Ohkura R, Yamada T, Nagahara A, Ohtaka K, Minowa T, Kurosawa A, Sato N. Comparison of the efficacy of 400mg and 800mg of clarithromycin used with lansoprazole and amoxicillin in eradication regimens for Helicobacter pylori infection in a Japanese population. J Gastroenterol 2001; 35:536-9. [PMID: 10905362 DOI: 10.1007/s005350070077] [Citation(s) in RCA: 10] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We conducted a randomized prospective comparative study to determine whether a 1-week lansoprazole-amoxicillin-clarithromycin (LAC) regimen with 800 mg of clarithromycin a day was more effective such a regimen with 400 mg daily in the Japanese population. One hundred and seventy-five Helicobacter pylori-positive patients were randomly assigned to receive one of two different 7-day regimens, one with clarithromycin 400 mg (LAC 400 regimen) and the other with clarithromycin 800 mg (LAC 800 regimen). The cure rates for both regimens were similar, although adverse effects were significantly more frequent in the LAC 800 regimen, suggesting that 400 mg of clarithromycin may be sufficient in our patient population.
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Affiliation(s)
- H Miwi
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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32
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Minowa T, Ohtsuka S, Sasai H, Kamada M. Proteomic analysis of the small intestine and colon epithelia of adenomatous polyposis coli gene-mutant mice by two-dimensional gel electrophoresis. Electrophoresis 2000. [PMID: 10870965 DOI: 10.1002/(sici)1522-2683(20000501)21:9<1782::aid-elps1782>3.0.co;2-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Mutations of the adenomatous polyposis coli gene (APC) have been implicated in the occurrence of sporadic colon cancer. Various APC mutant strains of mice have been created to better understand the function of this gene. Previously, we had mice express a mutant form of mRNA of the APC protein that encoded 474 amino acids instead of the 2845 amino acids due to exon duplication. These APC mutant mice (APC delta 474) developed intestinal and mammary tumors, as have other APC mutant mice previously reported (Sasai, H., et al. Carcinogenesis, in press). To elucidate the mechanism of the tumor development, we prepared protein samples from both normal and tumor tissues from APC delta 474 mutant mice, as well as tissues from normal mice, and used them for proteomic analysis. After two-dimensional electrophoresis, the gels were silver stained and the protein spots were analyzed. We analyzed about 1000 protein spots per sample and found several protein spots that are specific for normal or tumor samples from APC delta 474 mutant mice, as well as proteins with altered expression levels. Among the identified protein spots, truncated beta-tubulins were specific to APC delta 474 mutant mice polyp samples. The apparent molecular mass of these proteins suggested that these beta-tubulins may be truncated very close to the binding site of the anti-tumor drug taxol.
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Affiliation(s)
- T Minowa
- Japan Tobacco Inc., Pharmaceutical Frontier Research Laboratories, Central Pharmaceutical Research Institute, Yokohama, Kanagawa.
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33
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Okamoto H, Yonemori F, Wakitani K, Minowa T, Maeda K, Shinkai H. A cholesteryl ester transfer protein inhibitor attenuates atherosclerosis in rabbits. Nature 2000; 406:203-7. [PMID: 10910363 DOI: 10.1038/35018119] [Citation(s) in RCA: 448] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cholesteryl ester transfer protein (CETP) is a plasma protein that mediates the exchange of cholesteryl ester in high-density lipoprotein (HDL) for triglyceride in very low density lipoprotein (VLDL). This process decreases the level of anti-atherogenic HDL cholesterol and increases pro-atherogenic VLDL and low density lipoprotein (LDL) cholesterol, so CETP is potentially atherogenic. On the other hand, CETP could also be anti-atherogenic, because it participates in reverse cholesterol transport (transfer of cholesterol from peripheral cells through the plasma to the liver). Because the role of CETP in atherosclerosis remains unclear, we have attempted to develop a potent and specific CETP inhibitor. Here we describe CETP inhibitors that form a disulphide bond with CETP, and present one such inhibitor (JTT-705) that increases HDL cholesterol, decreases non-HDL cholesterol and inhibits the progression of atherosclerosis in rabbits. Our findings indicate that CETP may be atherogenic in vivo and that JTT-705 may be a potential anti-atherogenic drug.
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Affiliation(s)
- H Okamoto
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, JT Inc., Takatsuki, Osaka, Japan.
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34
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Minowa T, Ohtsuka S, Sasai H, Kamada M. Proteomic analysis of the small intestine and colon epithelia of adenomatous polyposis coli gene-mutant mice by two-dimensional gel electrophoresis. Electrophoresis 2000; 21:1782-6. [PMID: 10870965 DOI: 10.1002/(sici)1522-2683(20000501)21:9<1782::aid-elps1782>3.0.co;2-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Mutations of the adenomatous polyposis coli gene (APC) have been implicated in the occurrence of sporadic colon cancer. Various APC mutant strains of mice have been created to better understand the function of this gene. Previously, we had mice express a mutant form of mRNA of the APC protein that encoded 474 amino acids instead of the 2845 amino acids due to exon duplication. These APC mutant mice (APC delta 474) developed intestinal and mammary tumors, as have other APC mutant mice previously reported (Sasai, H., et al. Carcinogenesis, in press). To elucidate the mechanism of the tumor development, we prepared protein samples from both normal and tumor tissues from APC delta 474 mutant mice, as well as tissues from normal mice, and used them for proteomic analysis. After two-dimensional electrophoresis, the gels were silver stained and the protein spots were analyzed. We analyzed about 1000 protein spots per sample and found several protein spots that are specific for normal or tumor samples from APC delta 474 mutant mice, as well as proteins with altered expression levels. Among the identified protein spots, truncated beta-tubulins were specific to APC delta 474 mutant mice polyp samples. The apparent molecular mass of these proteins suggested that these beta-tubulins may be truncated very close to the binding site of the anti-tumor drug taxol.
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Affiliation(s)
- T Minowa
- Japan Tobacco Inc., Pharmaceutical Frontier Research Laboratories, Central Pharmaceutical Research Institute, Yokohama, Kanagawa.
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35
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Murai T, Miwa H, Ohkura R, Iwazaki R, Nagahara A, Sato K, Yamada T, Ota K, Tanaka H, Kawabe M, Minowa T, Takei Y, Miyazaki A, Sato N. The incidence of reflux oesophagitis after cure of Helicobacter pylori in a Japanese population. Aliment Pharmacol Ther 2000; 14 Suppl 1:161-5. [PMID: 10807418 DOI: 10.1046/j.1365-2036.2000.014s1161.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIM To investigate the incidence of reflux oesophagitis after antibacterial therapy for Helicobacter pylori infection in our patient population. METHODS Subjects were 451 H. pylori-infected patients (primary symptom: peptic ulcer disease in 347, nonulcer dyspepsia in 100, and reflux oesophagitis in four): 11 of these patients had reflux oesophagitis on study entry. H. pylori infection was treated by a proton pump inhibitor/amoxycillin-clarithromycin regimen for either 7 or 14 days. Each patient was examined by endoscopy before treatment and more than 6 months after treatment to compare oesophageal findings. In addition, 227 patients were interviewed regarding reflux symptoms, using symptom questionnaires, before and more than 6 months after treatment. RESULTS Among 440 patients who did not have reflux oesophagitis prior to antibacterial treatment (340 peptic ulcer patients and 100 nonulcer dyspepsia patients), 23 patients whose infection was eradicated developed reflux oesophagitis (5.4%). The 11 patients who had reflux oesophagitis prior to treatment were all successfully cured of infection. Six of these patients showed no change in their oesophagitis, while the condition improved in three and worsened in two. Symptom scores improved in 34 of the 36 patients who reported reflux symptoms. Among 19 patients who showed persistent infection, only one developed reflux oesophagitis (5.2%), while none complained of newly developed symptoms following treatment. CONCLUSIONS Development of reflux oesophagitis after treatment of H. pylori infection was observed in a Japanese population. However, the incidence of this condition was comparable between those with persistent H. pylori infection and those in whom the infection was eradicated.
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Affiliation(s)
- T Murai
- Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan
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36
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Inui K, Shimazaki Y, Watanabe T, Takahashi T, Minowa T, Takeda H, Yanagawa N, Sotoda Y. Effects of Duraflo II heparin-coated cardiopulmonary bypass circuits on the coagulation system, endothelial damage, and cytokine release in patients with cardiac operation employing aprotinin and steroids. Artif Organs 1999; 23:1107-12. [PMID: 10619929 DOI: 10.1111/j.1525-1594.1999.06335.x] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The effects of Duraflo II heparin coated cardiopulmonary bypass circuits, low-dose aprotinin, and steroids on the coagulation system, endothelial damage, and cytokine release were evaluated by comparing those treated with low-dose aprotinin and steroids. Twenty-four adult patients undergoing coronary artery bypass grafting, aortic valve replacement, or valve repair surgery were randomly assigned to 2 groups: either heparin-coated (Duraflo group, n = 12) or noncoated equipment (noncoated group, n = 12) groups. In the Duraflo group, the cardiopulmonary reservoir was also coated with heparin. There were no significant differences in age at the time of operation, aortic cross-clamp time, cardiopulmonary bypass time, and rectal temperature during cardiopulmonary bypass. Standard systemic heparinization was performed. Methylpredonisolone and low-dose aprotinin were given in both groups of patients. Serum XIIa factor, TAT, and IL-6 were significantly higher in the control group than in the Duraflo group during cardiopulmonary bypass (p < 0.01). Serum IL-8 was significantly higher in the control group than in the Duraflo group at 24 h after cardiopulmonary bypass (p < 0.05). No significant difference was found in serum thrombomodulin and TNF-alpha; both were within normal during the study period. These results indicate that the use of Duraflo II heparin coated equipment and a heparin-coated cardiopulmonary reservoir suppressed excess coagulation and inflammatory reaction induced by cardiopulmonary bypass.
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Affiliation(s)
- K Inui
- Second Department of Surgery, Yamagata university School of Medicine, Yamagata, Japan
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37
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Abstract
BACKGROUND Optimal conditions for deep hypothermic perfusion and protective brain blood flow remain unclear. METHODS Dogs (n = 52) underwent 120 minutes of cardiopulmonary bypass at 20 degrees C with perfusion flow rates of 2.5, 5, 10, 20, 40, and 100 mL x kg(-1) x min(-1). We examined the effect of the various flow rates and different perfusion pressures on brain blood flow, metabolism, and intracellular pH. RESULTS The brain was ischemic and acidotic when the perfusion flow rate was less than 5 mL kg(-1) x min(-1) and pressure was less than 10 mm Hg. When perfusion pressure was higher than 10 mm Hg, cerebral cortex blood flow was more than 9 mL x 100 g(-1) x min(-1) and intracellular pH, higher than 6.95. The cerebral metabolic rate for oxygen decreased at a flow rate of 2.5 mL x kg(-1) min(-1). The cerebral metabolic ratio of glucose to oxygen and the cerebral vascular resistance were lowest when perfusion pressure was 10 to 30 mm Hg. Full-flow (100 mL x kg(-1) x min(-1)) perfusion caused paradoxical brain acidosis; a flow of 40 mL x kg(-1) x min(-1) provided the best results. CONCLUSIONS Both extremely low-flow perfusion and excessive perfusion cause brain acidosis. Low-flow perfusion at a pressure of 20 mm Hg provides cerebral vasorelaxation and aerobic metabolism during operations at 20 degrees C.
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Affiliation(s)
- T Watanabe
- Second Department of Surgery,Yamagata University School of Medicine, Japan
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38
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Affiliation(s)
- N Oshikiri
- Second Department of Surgery, Yamagata University School of Medicine, Yamagata-City, Japan
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39
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Sugimoto T, Shimanuki T, Minowa T, Uchino H, Nakamura C, Uchimura F, Haga T. [Catheter drainage of late cardiac tamponade guided by computed tomography]. Kyobu Geka 1999; 52:192-6. [PMID: 10097544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Delayed cardiac tamponade is an unusual but serious complication of cardiac surgery. Echocardiography and computed tomography (CT) are well established methods for the detection of pericardial effusions. Catheter insertion guided by CT has been used to accomplish non operative drainage of symptomatic postoperative pericardial effusion in seven cases. These patients were grouped into four types according to distribution of the fluid. General pericardial effusion around the heart is classified as type 1, effusion adjacent to the right side of the heart as type 2 and left side as type 3, effusion localized only at the apex as type 4. CT imaging is useful not only to localize and assess the size of the effusions, but also to select the way of catheter insertion. As the fluid might be trapped in compartments, for instance right-sided or left sided type, investigation of the pericardial spaces is important in planning a catheter pericardiocentesis.
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Affiliation(s)
- T Sugimoto
- Department of Surgery, Yamagata Prefectural Nihonkai Hospital, Yamagata, Japan
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40
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Iwamuro Y, Miwa S, Zhang XF, Minowa T, Enoki T, Okamoto Y, Hasegawa H, Furutani H, Okazawa M, Ishikawa M, Hashimoto N, Masaki T. Activation of three types of voltage-independent Ca2+ channel in A7r5 cells by endothelin-1 as revealed by a novel Ca2+ channel blocker LOE 908. Br J Pharmacol 1999; 126:1107-14. [PMID: 10204997 PMCID: PMC1565887 DOI: 10.1038/sj.bjp.0702416] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [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] [Indexed: 11/08/2022] Open
Abstract
1. We have shown that in addition to voltage-operated Ca2+ channel (VOC), endothelin-1 (ET-1) activates two types of Ca2+-permeable nonselective cation channel (NSCC) in A7r5 cells: its lower concentrations (< or = 1 nM; lower [ET-1]) activate only an SK&F 96365-resistant channel (NSCC-1), whereas its higher concentrations (> or = 10 nM; higher [ET-1]) activate an SK&F 96365-sensitive channel (NSCC-2) as well. 2. We now characterized the effects of a blocker of Ca2+ entry channel LOE 908 on NSCCs and store-operated Ca2+ channel (SOCC) in A7r5 cells, and using two drugs, clarified the involvement of these channels in the ET-1-induced increase in the intracellular free Ca2+ concentrations ([Ca2+]i). Whole-cell recordings and [Ca2+]i monitoring with fluo-3 were used. 3. LOE 908 up to 10 microM had no effect on increases in [Ca2+]i induced by thapsigargin or ionomycin, but SK&F 96365 abolished them. 4. In the cells clamped at -60 mV, both lower and higher [ET-1] induced inward currents with linear iv relationships and the reversal potentials of -15.0 mV. Thapsigargin induced no currents. 5. In the presence of nifedipine, lower [ET-1] induced a sustained increase in [Ca2+]i, whereas higher [ET-1] induced a transient peak and a sustained increase. The sustained increases by lower and higher [ET-1] were abolished by removal of extracellular Ca2+, and they were suppressed by LOE 908 to 0 and 35%, respectively, with the LOE 908-resistant part being abolished by SK&F 96365. 6. These results show that LOE 908 is a blocker of NSCCs without effect on SOCC, and that the increase in [Ca2+]i at lower [ET-1] results from Ca2+ entry through NSCC-1 in addition to VOC, whereas the increase at higher [ET-1] involves NSCC-1, NSCC-2 and SOCC in addition to VOC.
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Affiliation(s)
- Y Iwamuro
- Department of Neurosurgery, Kyoto University Faculty of Medicine, Japan
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41
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Kuraoka S, Watanabe T, Inui K, Minowa T, Oshikiri N, Hosaka J, Takeda H, Shimazaki Y. [Results of muscle flap repair for deep mediastinitis and graft patency after coronary artery bypass grafting]. Kyobu Geka 1999; 52:218-23. [PMID: 10097549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Between 1978 and 1997, 9 patients developed poststernotomy mediastinitis after coronary artery bypass grafting. Four of these patients (group A) were treated with open drainage and mediastinal irrigation or omental transfer. The other 5 patients (group B) were treated with primary wound closure by the technique of muscle flap mobilization. The purpose of this study was to compare the surgical results and graft patency of both groups. The hospital mortality of group A was 100 per cent. All patients in group B survived for 35 months of the mean postoperative periods without complaints. Postoperative coronary angiography revealed the complete graft patency in group B. We conclude that muscle flap mobilization may be a superior measure for the patient survival and graft patency as the treatment of mediastinitis after coronary artery bypass grafting.
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Affiliation(s)
- S Kuraoka
- Second Department of Surgery, Yamagata University School of Medicine, Japan
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42
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Sugimoto T, Shimanuki T, Minowa T, Uchino H, Nakamura C. [A case report of infective endocarditis with total rupture of the posterior papillary muscle after aortic valve replacement]. Kyobu Geka 1998; 51:1120-2. [PMID: 9866347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
We reported a case with severe mitral regurgitation caused by total rupture of the posterior papillary muscle two days after aortic valve replacement. A 62-year-old man was transferred to our hospital with high fever and dyspnea with severe aortic regurgitation caused by infective endocarditis. The left heart failure occurred suddenly two days after the initial operation. Echocardiogram revealed massive mitral regurgitation and rupture of the posterior papillary muscle. He underwent emergent mitral valve replacement. Histological examination of the papillary muscle showed typical ischemic necrosis without inflammation. The postoperative course was uneventful. We suggested the papillary muscle rupture in this case may be due to coronary artery emboli occurred in association with infective endocarditis.
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Affiliation(s)
- T Sugimoto
- Department of Surgery, Yamagata Prefectural Nihonkai Hospital, Sakata, Japan
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43
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Inui K, Shimazaki Y, Watanabe T, Kuraoka S, Minowa T, Miura M, Oshikiri S, Toyama H. Bentall operation, total aortic replacement and mitral valve replacement for a young adult with Marfan syndrome: a case of three-staged operation. Ann Thorac Cardiovasc Surg 1998; 4:222-5. [PMID: 9738127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In Marfan syndrome, the most common cardiovascular abnormalities are dilatation of the aorta and aortic valve regurgitation in adult patients. Mitral valve dysfunction is the most common cause of morbidity and mortality in infants and children with Marfan syndrome, and is not frequently operated on in adult Marfan patients who undergo surgery for diseases of the aortic root and total aorta. This report describes a successfully three-staged operation for a 24 year-old man with Marfan syndrome who underwent an emergent Bentall operation and aortic arch replacement, total aortic replacement and mitral valve replacement over 2 years. Mitral valve regurgitation was mild but increased after the second operation. The graft was tightly adhesive and invasive to the sternum. Endoscopic view was helpful to avoid graft damage at resternotomy. The postoperative course was uneventful in each operation. Microscopic examination of the mitral valve leaflets showed abnormal increase of mucopolysaccharides, and disruption and fragmentation of elastic fibers.
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Affiliation(s)
- K Inui
- Second Department of Surgery, Yamagata University School of Medicine, 2-2-2 Iida-nishi, Yamagata 990-9585, Japan
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44
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Iwamuro Y, Miwa S, Minowa T, Enoki T, Zhang XF, Ishikawa M, Hashimoto N, Masaki T. Activation of two types of Ca2+-permeable nonselective cation channel by endothelin-1 in A7r5 cells. Br J Pharmacol 1998; 124:1541-9. [PMID: 9723969 PMCID: PMC1565541 DOI: 10.1038/sj.bjp.0701984] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [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] [Indexed: 11/08/2022] Open
Abstract
1. In A7r5 cells loaded with the Ca2+ indicator fura-2, we examined the effect of a Ca2+ channel blocker SK&F 96365 on increases in intracellular free Ca2+ concentrations ([Ca2+]i) and Mn2+ quenching of fura-2 fluorescence by endothelin-1 (ET-1). Whole-cell patch-clamp was also performed. 2. Higher concentrations (> or = 10 nM) of ET-1 (higher [ET-1]) evoked a transient peak and a subsequent sustained elevation in [Ca2+]i: removal of extracellular Ca2+ abolished only the latter. A blocker of L-type voltage-operated Ca2+ channel (VOC) nifedipine at 1 microM reduced the sustained phase to about 50%, which was partially sensitive to SK&F 96365 (30 microM). 3. Lower [ET-1] (< or = 1 nM) evoked only a sustained elevation in [Ca2+]i which depends on extracellular Ca2+. The elevation was partly sensitive to nifedipine but not SK&F 96365. 4. In the presence of 1 microM nifedipine, higher [ET-1] increased the rate of Mn2+ quenching but lower [ET-1] had little effect. 5. In whole-cell recordings, both lower and higher [ET-1] induced inward currents at a holding potential of -60 mV with linear I-V relationships and reversal potentials close to 0 mV. The current at lower [ET-1] was resistant to SK&F 96365 but was abolished by replacement of Ca2+ in the bath solution with Mn2+. The current at higher [ET-1] was abolished by the replacement plus SK&F 96365. 6. In a bath solution containing only Ca2+ as a movable cation, ET-1 evoked currents: the current at lower [ET-1] was sensitive to Mn2+, whereas that at higher [ET-1] was partly sensitive to SK&F 96365. 7. These results indicate that in addition to VOC, ET-1 activates two types of Ca2+-permeable nonselective cation channel depending on its concentrations which differ in terms of sensitivity to SK&F 96365 and permeability to Mn2+.
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Affiliation(s)
- Y Iwamuro
- Department of Neurosurgery, Kyoto University Faculty of Medicine, Japan
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45
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Zhang XF, Komuro T, Miwa S, Minowa T, Iwamuro Y, Okamoto Y, Ninomiya H, Sawamura T, Masaki T. Role of nonselective cation channels as Ca2+ entry pathway in endothelin-1-induced contraction and their suppression by nitric oxide. Eur J Pharmacol 1998; 352:237-45. [PMID: 9716360 DOI: 10.1016/s0014-2999(98)00362-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present study was carried out to clarify the role of nonselective cation channels as a Ca2+ entry pathway in the contraction and the increase in [Ca2+]i induced by endothelin- in endothelium-denuded rat thoracic aorta rings, and their suppression by nitric oxide (NO). In Ca2+-free medium, the endothelin-1-induced contraction was suppressed to about 20% of control values, although the increase in [Ca2+]i became negligible. The contraction and the increase in [Ca2+]i monitored by fura 2 fluorescence were unaffected by a blocker of L-type voltage-operated Ca2+ channels nifedipine. A blocker of nonselective cation channels 1-[beta-[3-(4-methoxyphenyl)propoxyl]-4-methoxyphenethyl]-1H-imida zole . HCl(SK&F 96365) suppressed the endothelin-1-induced contraction and increase in [Ca2+]i to the level similar to that after removal of extracellular Ca2+. SK&F 96365 had no further effect on the endothelin-1-induced contraction in the absence of extracellular Ca2+. The endothelin-1-induced contraction and increase in [Ca2+]i were abolished by a donor of NO sodium nitroprusside. The effects of another NO donor 3-morpholinosydnonimine (SIN-1) were also tested and yielded essentially similar results to those for sodium nitroprusside on the endothelin-1-induced contraction. Furthermore, the inhibitory effects of sodium nitroprusside could be blocked with a guanylate cyclase inhibitor 1H-[1,2,4]oxadiazolo[4,3,-a]quinoxalin-1-one (ODQ) at 30 microM. These findings suggest that Ca2+ entry through nonselective cation channels but not voltage-operated Ca2+ channels plays a critical role in the endothelin-1-induced increase in [Ca2+]i and the resulting contraction and that inhibition by NO of the endothelin-1-induced contraction is mainly the result of blockade of Ca2+ entry through these channels.
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Affiliation(s)
- X F Zhang
- Department of Pharmacology, Kyoto University, Faculty of Medicine, Japan
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46
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Sugimoto T, Minowa T, Uchino H, Shimanuki T, Nakamura C. [Spontaneous splenic rupture after mitral valve replacement for infective endocarditis]. Jpn J Thorac Cardiovasc Surg 1998; 46:482-5. [PMID: 9654932 DOI: 10.1007/bf03217776] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We report a successful treatment of massive bleeding due to spontaneous splenic rupture after mitral valve replacement. A 61-year-old man was admitted to our hospital for intermittent high fever. An echocardiogram demonstrated a large vegetation on the posterior cusp of the mitral valve and mitral regurgitation of moderate degree. Staphylococcus epidermidis was cultured from his arterial blood. He underwent a mitral valve replacement after 3 weeks of antimicrobiological therapy with penicillin G crystalline and minocycline hydrochloeide. The patient fell into hemorrhagic shock on postoperative day 11 after complaining dull pain on his left upper abdomen for 3 days. A computed tomography demonstrated a splenic rupture and massive hematoma in the retroperitoneum. A splenic arterial embolization was done before splenectomy. The blood and clot of 2800 g were sucked from peritoneal and retroperitoneal cavities. There were no mycotic aneurysms nor abscess but the torn capsule on the swelled and partially necrotic spleen. The patient discharged uneventfully on postoperative day 43. Infective endocarditis frequently causes splenic infarction but rarely splenic rupture. Anticoagulation therapy after mitral valve replacement might have emphasized the bleeding in the patient.
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Affiliation(s)
- T Sugimoto
- Department of Surgery, Yamagata Prefectural Nihonkai Hospital, Japan
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47
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Abstract
The rat D2 dopamine receptor gene is transcribed from a TATA-less promoter that has an initiator-like sequence and several putative Sp1 binding sites. We previously reported that a negative modulator is located between nucleotides -116 and -76 (D2Neg-B) in this gene and that Sp1 as well as another unknown factor bind to this region (Minowa et al., J. Biol. Chem. 269, 11656, 1994). In the present investigation employing the in situ filter detection method, we identified this factor as Sp3. Anti-Sp3 antiserum used in gel-shift assays also revealed that Sp3 binds to the D2Neg-B sequence. Cotransfection of Drosophila Schneider's SL2 cells with Sp3 or Sp1 expression plasmids in the presence of CAT reporter plasmids containing D2 promoter regions demonstrated that Sp1 increased CAT activity in a dose-dependent manner, whereas Sp3, either alone or in the presence of Sp1, failed to activate or repress transcription. On the other hand, using the TATA-containing reporter plasmid BCAT-2, Sp3 coexpression significantly repressed Sp1-induced trans-activation, although Sp3 alone was ineffective. Thus, the transcriptional activity of Sp3 is dependent on the promoter context, and the negative regulation of D2 gene expression appears quite complex and may not depend simply on known DNA-protein interactions involving only Sp1 and Sp3.
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Affiliation(s)
- S Yajima
- Genetic Pharmacology Unit, Experimental Therapeutics Branch, National Institute of Neurological Disorders and Stroke, Bethesda, MD 20892, USA
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48
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Shimazaki Y, Inui K, Watanabe T, Minowa T, Kuraoka S, Oshikiri N, Yanagawa N, Yamaguchi Y, Kanaya T. Ruptured aneurysm of the ductus diverticulum into the pulmonary artery in a man: a successful repair. J Card Surg 1998; 13:146-9. [PMID: 10063964 DOI: 10.1111/j.1540-8191.1998.tb01252.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aneurysm of the ductus diverticulum in the adult is rare and its rupture is fatal. A 75-year-old man presented with congestive heart failure that suddenly occurred with a continuous murmur. Angiography showed a left-to-right shunt through a large thrombosed aneurysm of the ductus diverticulum (6 cm), and the pulmonary-to-systemic flow ratio was 2.6. Patch closure of the orifice (3x4 cm) of the aneurysm and repair of the perforated pulmonary artery were done emergently under hypothermic cardiopulmonary bypass with selective cerebral perfusion. He recovered uneventfully. Early recognition and early intervention should be indicated in this otherwise fatal condition.
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Affiliation(s)
- Y Shimazaki
- Second Department of Surgery, Yamagata University School of Medicine, Japan
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49
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Minowa T, Kawata T, Katsuragawa H, Uematsu HK. Initial phase of laser-induced air optical breakdown: a new picture. Appl Opt 1998; 37:1099-1103. [PMID: 18268692 DOI: 10.1364/ao.37.001099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Optical breakdown has been generated by focusing YAG laser radiation in the air. The laser radiation itself was scattered due to laser-induced air optical breakdown. Angular distributions of scattered radiation at 1064, 532, and 355 nm were measured. Analysis of the distributions has been performed in terms of Mie scattering. It has been assumed that scattering of laser radiation is due mainly to highly ionized plasma balls in the initial phase of air optical breakdown. The wavelength-dependent angular distribution has been analyzed with two parameters. The mean radius and the plasma frequency of the plasma balls have been determined by a least-squares fit procedure. Observed wavelength-dependent angular distributions are in good agreement with ones calculated by Mie theory.
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50
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Minowa T, Nagae N, Saito H, Watanabe T, Oshikiri N, Shimazaki Y. [Use of ultrasonically activated scalpel for the paced patient--a case report]. Jpn J Thorac Cardiovasc Surg 1998; 46:127-9. [PMID: 9513539 DOI: 10.1007/bf03217736] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A paced patient underwent mitral valve replacement for mitral stenosis using ultrasonically activated scalpel. There were minimum bleeding and no homologous blood transfusion was required. Ultrasonically activated scalpel fid not interfere the pulse generator nor the transesophageal echocardiography. Ultrasonically activated scalpel is useful for the open heart surgery in paced patients.
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Affiliation(s)
- T Minowa
- Second Department of Surgery, Yamagata University School of Medicine, Japan
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