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Ushijima F, Hase T, Yamashita Y, Kim H, Shimokata T, Kondo C, Sato T, Baba T, Watanabe S, Futamura K, Ando Y, Mizuno M, Ishii M. Durvalumab plus carboplatin-etoposide treatment in a patient with small-cell lung cancer on hemodialysis: a case report and literature review. Int Cancer Conf J 2024; 13:88-92. [PMID: 38524642 PMCID: PMC10957816 DOI: 10.1007/s13691-023-00640-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/30/2023] [Indexed: 03/26/2024] Open
Abstract
Little is known about the efficacy and safety of durvalumab plus carboplatin-etoposide treatment in patients with extensive-disease (ED) small-cell lung cancer (SCLC) on hemodialysis. Here, we present a case of a 67-year-old man with pleuroperitoneal communication on continuous ambulatory peritoneal dialysis who was diagnosed with ED-SCLC based on a cytological analysis of the peritoneal fluid. He was switched from peritoneal dialysis to hemodialysis and received durvalumab (1500 mg/body on day 1) plus carboplatin (area under the concentration-time curve = 5, 125 mg on day 1) and etoposide (50 mg/m2 on days 1 and 3) as first-line therapy. During the first cycle, grade 2 anemia, grade 3 neutropenia, and grade 3 upper gastrointestinal bleeding occurred; therefore, durvalumab and reduced doses of carboplatin and etoposide were administered. No other severe adverse events occurred, and a partial response was observed after four cycles. Our findings indicate that durvalumab plus carboplatin-etoposide treatment is safe and effective even in patients on hemodialysis.
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Affiliation(s)
- Futoshi Ushijima
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Tetsunari Hase
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Yuki Yamashita
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Hangsoo Kim
- Department of Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoya Shimokata
- Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan
| | - Chiaki Kondo
- Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan
| | - Tomonori Sato
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Tomoya Baba
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Shohei Watanabe
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Keisuke Futamura
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Yuichi Ando
- Department of Clinical Oncology and Chemotherapy, Nagoya University Hospital, Nagoya, Japan
| | - Masashi Mizuno
- Department of Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Makoto Ishii
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550 Japan
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Futamura K, Hase T, Tanaka A, Sakai Y, Okachi S, Shibata H, Ushijima F, Hashimoto T, Nakashima K, Ito K, Yamamoto T, Numaguchi A, Inden Y, Ishii M. Lethal ventricular arrhythmia due to entrectinib-induced Brugada syndrome: a case report and literature review. Int Cancer Conf J 2023; 12:299-304. [PMID: 37577345 PMCID: PMC10421830 DOI: 10.1007/s13691-023-00620-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/15/2023] [Indexed: 08/15/2023] Open
Abstract
Entrectinib, a multikinase inhibitor of ROS1 and tropomyosin receptor kinases, is recommended to treat ROS1-positive metastatic non-small cell lung cancer (NSCLC). In a previous study, entrectinib-related cardiotoxicity occurred in 2% of patients; however, lethal arrhythmias remain understudied. We encountered a case of fatal arrhythmia due to drug-induced Brugada syndrome caused by entrectinib. An 81-year-old Japanese male with lung adenocarcinoma harboring ROS1-fusion gene was treated with entrectinib. The patient developed lethal arrhythmias three days after drug initiation, including ventricular tachycardia with Brugada-like electrocardiogram changes. Echocardiography and coronary angiography revealed no evidence of acute coronary syndrome or myocarditis. Following the termination of entrectinib, the electrocardiogram abnormality improved within 12 days. Hence, paying special attention to and monitoring electrocardiogram changes is necessary. In addition, it is also necessary to consider early therapeutic interventions and discontinuation of the drug in cases of drug-induced Brugada syndrome.
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Affiliation(s)
- Keisuke Futamura
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Tetsunari Hase
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Akihito Tanaka
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshinori Sakai
- Department of Emergency and Medical Intensive Care, Nagoya University Hospital, Nagoya, Japan
| | - Shotaro Okachi
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Hirofumi Shibata
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Futoshi Ushijima
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Takahiko Hashimoto
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Kuniya Nakashima
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Katsuki Ito
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
| | - Takanori Yamamoto
- Department of Emergency and Medical Intensive Care, Nagoya University Hospital, Nagoya, Japan
| | - Atsushi Numaguchi
- Department of Emergency and Medical Intensive Care, Nagoya University Hospital, Nagoya, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Makoto Ishii
- Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-ku, Nagoya, 466-8550 Japan
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Suzuki K, Futamura K, Hasegawa E, Aoki Y, Nakamura M, Matsunaga K, Yagami A. Adult-Onset Sheep's Milk Allergy in a Patient Without Cow's Milk Allergy. J Investig Allergol Clin Immunol 2021; 31:273-274. [PMID: 32856594 DOI: 10.18176/jiaci.0578] [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] [Indexed: 11/20/2022] Open
Affiliation(s)
- K Suzuki
- Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan
| | - K Futamura
- Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan
| | - E Hasegawa
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan.,General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan
| | - Y Aoki
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan.,General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan
| | - M Nakamura
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan.,General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan
| | - K Matsunaga
- Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan.,Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan
| | - A Yagami
- Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan
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Tsujita M, Kosugi T, Masuda T, Okada M, Futamura K, Hiramitsu T, Goto N, Shunji N, Watarai Y, Maruyama S. Serum αKlotho as a Predictor of Graft Dysfunction After Kidney Transplantation. Transplant Proc 2018; 50:3440-3444. [DOI: 10.1016/j.transproceed.2018.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 09/05/2018] [Indexed: 12/29/2022]
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Yamamoto T, Watarai Y, Futamura K, Okada M, Tsujita M, Hiramitsu T, Goto N, Narumi S, Takeda A, Kobayashi T. Efficacy of Eculizumab Therapy for Atypical Hemolytic Uremic Syndrome Recurrence and Antibody-Mediated Rejection Progress After Renal Transplantation With Preformed Donor-Specific Antibodies: Case Report. Transplant Proc 2017; 49:159-162. [PMID: 28104125 DOI: 10.1016/j.transproceed.2016.10.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Atypical hemolytic uremic syndrome (aHUS) develops as the result of unregulated complement progression and precipitates de novo thrombotic microangiopathy. Plasma therapy is used to control the progression of the complement cascade, but that therapy is not effective in all patients and is accompanied by risk of infection and/or allergy. Eculizumab has been reported as an efficient therapy for aHUS. We report the case of a 35-year old woman who underwent effective eculizumab therapy for aHUS recurrence and antibody-mediated rejection (AMR) progress after renal transplantation with preformed donor-specific antibodies (DSA). She developed end-stage renal disease due to suspicious IgA nephropathy at age 33 years. Kidney transplantation was performed at age 35 years, and aHUS recurred 2 weeks later, leading to the progressive hemolytic anemia and renal dysfunction. Therefore, she underwent plasma therapy several times. Because it was difficult to continue to plasma therapy for severe allergy, eculizumab was proposed as an alternate therapy. Treatment with eculizumab was initiated 36 days after renal transplantation. After 3 years of eculizumab treatment, and without plasma therapy, schistocytes decreased, haptoglobin increased to within normal limits, creatinine levels stabilized, and no further episodes of diarrhea were reported. At protocol biopsy 1 year after transplantation, she was diagnosed with C4d-negative subclinical AMR. However, her pathologic findings at follow-up biopsy 3 years after transplantation were recovered. We conclude that eculizumab alone, without plasma therapy, is sufficient to treat recurrence of aHUS and AMR due to DSA after renal transplantation and to maintain long-term graft function.
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Affiliation(s)
- T Yamamoto
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan.
| | - Y Watarai
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - K Futamura
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - M Okada
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - M Tsujita
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - T Hiramitsu
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - N Goto
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - S Narumi
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - A Takeda
- Department of Nephrology, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - T Kobayashi
- Department of Kidney Transplant Surgery, Aichi Medical University, Nagakute, Japan
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Ozeki N, Muneta T, Koga H, Nakagawa Y, Mizuno M, Tsuji K, Mabuchi Y, Akazawa C, Kobayashi E, Matsumoto K, Futamura K, Saito T, Sekiya I. Not single but periodic injections of synovial mesenchymal stem cells maintain viable cells in knees and inhibit osteoarthritis progression in rats. Osteoarthritis Cartilage 2016; 24:1061-70. [PMID: 26880531 DOI: 10.1016/j.joca.2015.12.018] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 11/23/2015] [Accepted: 12/27/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We investigated the effects of single or repetitive intra-articular injections of synovial mesenchymal stem cells (MSCs) on a rat osteoarthritis (OA) model, and elucidated the behaviors and underlying mechanisms of the stem cells after the injection. DESIGN One week after the transection of the anterior cruciate ligament (ACL) of wild type Lewis rats, one million synovial MSCs were injected into the knee joint every week. Cartilage degeneration was evaluated with safranin-o staining after the first injection. To analyze cell kinetics or MSC properties, luciferase, LacZ, and GFP expressing synovial MSCs were used. To confirm the role of MSCs, species-specific microarray and PCR analyses were performed using human synovial MSCs. RESULTS Histological analysis for femoral and tibial cartilage showed that a single injection was ineffective but weekly injections had significant chondroprotective effects for 12 weeks. Histological and flow-cytometric analyses of LacZ and GFP expressing synovial MSCs revealed that injected MSCs migrated mainly into the synovium and most of them retained their undifferentiated MSC properties though the migrated cells rapidly decreased. In vivo imaging analysis revealed that MSCs maintained in knees while weekly injection. Species-specific microarray and PCR analyses showed that the human mRNAs on day 1 for 21 genes increased over 50-fold, and increased the expressions of PRG-4, BMP-2, and BMP-6 genes encoding chondroprotective proteins, and TSG-6 encoding an anti-inflammatory one. CONCLUSION Not single but periodic injections of synovial MSCs maintained viable cells without losing their MSC properties in knees and inhibited osteoarthritis (OA) progression by secretion of trophic factors.
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Affiliation(s)
- N Ozeki
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan; Department of Orthopaedic Surgery, Yokohama City University, Yokohama, 236-0004, Japan
| | - T Muneta
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - H Koga
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Y Nakagawa
- Department of Joint Surgery and Sports Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - M Mizuno
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - K Tsuji
- Department of Cartilage Regeneration, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - Y Mabuchi
- Department of Biochemistry and Biophysics, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - C Akazawa
- Department of Biochemistry and Biophysics, Graduate School, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan
| | - E Kobayashi
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, 160-8582, Japan
| | - K Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, 157-8535, Japan
| | - K Futamura
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, 157-8535, Japan
| | - T Saito
- Department of Orthopaedic Surgery, Yokohama City University, Yokohama, 236-0004, Japan
| | - I Sekiya
- Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, 113-8510, Japan.
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Shoda T, Futamura K, Kobayashi F, Saito H, Matsumoto K, Matsuda A. Cell type-dependent effects of corticosteroid on periostin production by primary human tissue cells. Allergy 2013; 68:1467-70. [PMID: 24118000 DOI: 10.1111/all.12240] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2013] [Indexed: 01/24/2023]
Abstract
Overproduction of periostin, an IL-13-inducible matricellular protein, despite corticosteroid treatment is thought to be involved in the chronicity of allergic inflammation seen in corticosteroid-refractory tissue fibrosis. Therefore, we hypothesized that some tissue cells must produce periostin in a corticosteroid-insensitive manner. Here, we show that IL-4 and IL-13 each induced comparable levels of periostin production by primary normal human fibroblasts and microvascular endothelial cells derived from lung and skin. Dexamethasone, a corticosteroid, completely inhibited IL-4/13-induced, but did not affect TGF-β-induced, periostin production by fibroblasts. In contrast, dexamethasone synergistically enhanced IL-4/13-induced periostin production by microvascular endothelial cells. TGF-β did not induce periostin production by microvascular endothelial cells. Our novel findings suggest that IL-4/13-induced microvascular endothelium-derived and/or TGF-β-induced fibroblast-derived periostin might play a pivotal role in corticosteroid-refractory tissue fibrosis, leading to chronic allergic inflammation in the lung and/or skin.
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Affiliation(s)
- T. Shoda
- Department of Health and Psychosocial Medicine; Aichi Medical University School of Medicine; Aichi
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - K. Futamura
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - F. Kobayashi
- Department of Health and Psychosocial Medicine; Aichi Medical University School of Medicine; Aichi
| | - H. Saito
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - K. Matsumoto
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
| | - A. Matsuda
- Department of Allergy and Immunology; National Research Institute for Child Health and Development; Tokyo Japan
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Unno H, Futamura K, Kojima R, Morita H, Saito H, Matsumoto K, Matsuda A. Silica Crystals Cause Cellular Injury in TLR3-Activated Human Bronchial Epthelial Cells. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Orihara K, Futamura K, Morita H, Hashimoto N, Fukuda S, Moqbel R, Matsumoto K, Saito H, Matsuda A. β2-Adrenoceptor Agonists Enhance Cytokine-Induced Release of Thymic Stromal Lymphopoietin by Lung Tissue Cells. J Allergy Clin Immunol 2010. [DOI: 10.1016/j.jaci.2009.12.917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hara Y, Kobayashi H, Ooshiro S, Futamura K, Nishino T, Chugun A, Temma K, Kondo H. Negative inotropic effect of diazepam in isolated guinea pig heart. J Vet Med Sci 2001; 63:135-43. [PMID: 11258448 DOI: 10.1292/jvms.63.135] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The inotropic effect of diazepam, a benzodiazepine derivative, and its mechanism of action were examined using guinea pig heart and single ventricular cell preparations. In Langendorff hearts and right ventricular free-wall preparations, diazepam (10 to 100 microM) produced a monophasic negative inotropic effect in a concentration dependent manner. Neither a central type (flumazenil 1 microM) nor a peripheral type (PK11195 10 microM) of benzodiazepine receptor antagonist antagonized the monophasic negative inotropic effects of diazepam. Diazepam (10 to 100 microM) shortened action potential duration of papillary muscle in a concentration dependent manner. In isolated single ventricular cells, diazepam (30 and 100 microM) inhibited the calcium current (I(Ca)) in a concentration dependent manner. Diazepam produced a significant decrease in I(Ca) elicited by first depolarizing pulses, however, the decrease of I(Ca) was not augmented during a train of depolarizing pulses. Thus, diazepam appears to produce a tonic block of cardiac calcium channels and the mode of inhibition is clearly different from the use-dependent block of verapamil. From these results, it was concluded that diazepam produces a monophasic negative inotropic effect that is independent of the benzodiazepine receptor, and is probably mediated through an inhibition of I(Ca) in guinea pig heart preparations.
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Affiliation(s)
- Y Hara
- Department of Veterinary Pharmacology, School of Veterinary Medicine and Animal Sciences, Kitasato University, Aomori, Japan
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Hara Y, Chugun A, Futamura K, Nishino T, Kondo H. Diazepam increases calcium sensitivity of the skinned cardiac muscle fiber in guinea pig. Jpn J Pharmacol 1999; 81:122-4. [PMID: 10580380 DOI: 10.1254/jjp.81.122] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Influences of diazepam, a benzodiazepine derivative, on the contractile response to calcium in skinned trabecular fibers of guinea pig heart were examined. Diazepam (100 microM) enhanced the contractile response of the skinned fiber to calcium and shifted the concentration-response curve to the left. The pCa50 values were 6.07+/-0.03 and 6.28+/-0.03 (P<0.05) in the absence and presence of diazepam, respectively. This result suggests that diazepam increases calcium sensitivity of contractile proteins in heart muscles.
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Affiliation(s)
- Y Hara
- Department of Veterinary Pharmacology, School of Veterinary Medicine and Animal Sciences, Kitasato University, Towada, Aomori, Japan
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Hara Y, Chugun A, Futamura K, Nishino T, Kondo H. Diazepam Increases Calcium Sensitivity of the Skinned Cardiac Muscle Fiber in Guinea Pig. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s0021-5198(19)30818-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
To develop a well controlled working environment including a mental health supporting system, it is important to survey the health status of workers. The authors analyzed results of the Todai Health Index (THI), which was administered to employees of a large-sized enterprise in Osaka in 1984, 1986, and 1987. The results were as follows: 1) Female workers had more complaints of "eye and skin", "many subjective symptoms", "mental instability", and "psychosomatic disorder" than males. Male workers complained more of "aggressiveness", "lie scale", and "arousal" than females. 2) The authors could not detect any annual changes of each scale during the 3 years. These results are similar to previous reports. 3) Some people had continuous complaints of "psychosomatic disorder" and "neurosis". These results indicate that THI is useful in obtaining information regarding mentally high risked workers.
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Affiliation(s)
- N Kunugita
- Department of Radiation Biology and Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan
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Futamura K, Shirai S, Majima A. [Effects of ochratoxin A on Cts mice (II). Causes of lens capsule deformities]. Nippon Ganka Gakkai Zasshi 1988; 92:462-7. [PMID: 3414461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Futamura K, Maruo T, Mochizuki M. Differential effects of dibutyryl cyclic AMP and epidermal growth factor on the synthesis and secretion of human chorionic gonadotropin and its subunits by trophoblastic and non-trophoblastic cells. Nihon Sanka Fujinka Gakkai Zasshi 1987; 39:1641-8. [PMID: 2824633] [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: 01/02/2023]
Abstract
The effects of dibutyryl cyclic adenosine 3',5'-monophosphate (cAMP) and epidermal growth factor (EGF) on the synthesis and secretion of human chorionic gonadotropin (hCG) and its subunits by normal and malignant trophoblasts as well as by non-trophoblastic cells were investigated in vitro. The explants of normal early placental tissues, choriocarcinoma cell line BeWo and non-trophoblastic tumor cell line CaSki from epidermoid carcinoma of the cervix, respectively, were cultured in the presence or absence of dibutyryl cAMP or EGF. The addition of either dibutyryl cAMP (1 mM) or EGF (100 ng/ml) caused significant increases in the synthesis and secretion of hCG and its subunits in cultures of normal and malignant trophoblasts, but had no stimulatory effect on hCG beta synthesis and secretion in culture of non-trophoblastic cell line CaSki that secretes predominantly hCG beta-like material. The magnitude of the stimulatory effects of dibutyryl cAMP and EGF on hCG (alpha,beta) synthesis and secretion by BeWo cells was much greater than that observed in normal trophoblasts. The time course of these stimulatory effects indicated that EGF-stimulated increase in hCG synthesis and secretion required a lag period longer than that for the dibutyryl cAMP-stimulated increase. These results suggest that there were no differences in normal and malignant trophoblasts in the mechanism for the stimulatory regulation of hCG (alpha, beta) synthesis and secretion, but immunoreactive hCG beta synthesis and secretion in non-trophoblastic tumor cells are regulated by a mechanism different from that in trophoblastic cells.
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Affiliation(s)
- K Futamura
- Department of Obstetrics and Gynecology, Kobe University School of Medicine
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Abstract
Sera and fluid in molar vesicles from 4 patients with hydatidiform mole were analyzed for hCG and its subunits. These samples were initially chromatographed through a standardized Sephadex G-100 upward column. Starting materials and each fraction on gel filtration were radioimmunoassay in homologous hCG, hCG-alpha and hCG-beta assays. The specimens obtained from 4 patients contained primarily hCG and little hCG-beta. Immunoreactive hCG-alpha was barely detectable in sera but was clearly demonstrated in vesicle fluid from molar patients. This immunoreactive hCG-alpha was combined with [125I]hCG-beta. The combined protein, [125I]hCG and [125I]hCG-beta recombined with urinary hCG-alpha were concentrated in the superovulated rat ovary in vivo. However, [125I]hCG-alpha and [125I]hCG-beta were not taken up by the ovaries. The biosynthesis of hCG-alpha are discussed.
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Ashitaka Y, Nishimura R, Futamura K, Oashi M, Tojo S. Serum and chorionic tissue concentrations of human chorionic gonadotropin and its subunits during pregnancy. Endocrinol Jpn 1974; 21:547-50. [PMID: 4464050 DOI: 10.1507/endocrj1954.21.547] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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