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Miyanishi K, Igase M, Murakami M, Sakai Y, Sakurai M, Tani K, Motegi T, Mizuno T. Establishment of a novel canine soft tissue sarcoma cell line and comparison of its characteristics with other soft tissue sarcoma cell lines. Res Vet Sci 2024; 171:105245. [PMID: 38554610 DOI: 10.1016/j.rvsc.2024.105245] [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: 08/25/2023] [Revised: 01/19/2024] [Accepted: 03/24/2024] [Indexed: 04/02/2024]
Abstract
Soft tissue sarcoma (STS) is a relatively common tumor in dogs. However, very few canine STS cell lines are available. This study aimed to establish a new cell line, STS-YU1, derived from a recurrence of myxosarcoma in an 11-year-old mixed-breed dog. We examined STS-YU1 for in vitro cell proliferation, migration, anticancer drug sensitivity, transcriptome analysis using next-generation sequencing (RNA-seq), and in vivo tumorigenicity in mice and compared it with previously established STS cell lines, MUMA-G and A72. The cell proliferation and migration of STS-YU1 were higher than MUMA-G although MUMA-G only exhibited tumorigenicity in mice. STS-YU1 showed dose-dependent cytotoxicity to anticancer drugs, but with weak effects. RNA-seq analysis revealed the molecular phenotype of STS-YU1 was different from that of a previously reported cell line, A72. Hence, the use of STS-YU1 would help in efficient drug screening against canine STS in vitro.
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Affiliation(s)
- Kyohei Miyanishi
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Masaya Igase
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Mami Murakami
- Laboratory of Veterinary Clinical Oncology, Joint Department of Veterinary Medicine, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yusuke Sakai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Masashi Sakurai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Tomoki Motegi
- Section of Computational Biomedicine, Boston University Chobanian & Avedisian School of Medicine, 72 East Concord Street E6, Boston, MA 02118, USA
| | - Takuya Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan.
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Anggoro D, Purba MS, Jiang F, Nishida N, Itoh H, Itamoto K, Nemoto Y, Nakaichi M, Sunahara H, Tani K. Elucidation of the radius and ulna fracture mechanisms in toy poodle dogs using finite element analysis. J Vet Med Sci 2024:23-0520. [PMID: 38556325 DOI: 10.1292/jvms.23-0520] [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] [Indexed: 04/02/2024] Open
Abstract
Fractures occurring in the distal radius and ulna of toy breed dogs pose distinctive challenges for veterinary practitioners, requiring specialized treatment approaches primarily based on anatomical features. Finite Element Analysis (FEA) was applied to conduct numerical experiments to determine stress distribution across the bone. This methodology offers an alternative substitute for directly investigating these phenomena in living dog experiments, which could present ethical obstacles. A three-dimensional bone model of the metacarpal, carpal, radius, ulna, and humerus was reconstructed from Computed Tomography (CT) images of the toy poodle and dachshund forelimb. The model was designed to simulate the jumping and landing conditions from a vertical distance of 40 cm to the ground within a limited timeframe. The investigation revealed considerable variations in stress distribution patterns between the radius and ulna of toy poodles and dachshunds, indicating notably elevated stress levels in toy poodles compared to dachshunds. In static and dynamic stress analysis, toy poodles exhibit peak stress levels at the distal radius and ulna. The Von Mises stresses for toy poodles reach 90.07 MPa (static) and 1,090.75 MPa (dynamic) at the radius and 1,677.97 MPa (static) and 1,047.98 MPa (dynamic) at the ulna. Conversely, dachshunds demonstrate lower stress levels for 5.39 MPa (static) and 231.79 MPa (dynamic) at the radius and 390.56 MPa (static) and 513.28 MPa (dynamic) at the ulna. The findings offer valuable insights for modified treatment approaches in managing fractures in toy breed dogs, optimizing care and outcomes.
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Affiliation(s)
- Dito Anggoro
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, Gadjah Mada University
| | - Melpa Susanti Purba
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University
| | - Fei Jiang
- Department of Mechanical Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University
| | - Norihiro Nishida
- Department of Orthopedic Surgery, Graduate School of Medicine, Yamaguchi University
| | - Harumichi Itoh
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Kazuhito Itamoto
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Yuki Nemoto
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Hiroshi Sunahara
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
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Anggoro D, Purba MS, Jiang F, Nishida N, Itoh H, Itamoto K, Nemoto Y, Nakaichi M, Sunahara H, Tani K. Finite element study on post-screw removal stress in toy poodle radius with different plate designs and screw arrangements. Open Vet J 2024; 14:885-894. [PMID: 38682140 PMCID: PMC11052620 DOI: 10.5455/ovj.2024.v14.i3.16] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 02/29/2024] [Indexed: 05/01/2024] Open
Abstract
Background The study employs finite element analysis to investigate stress distribution in the radius of toy poodles after screw removal. The examination focuses on the biomechanical implications of varied screw hole configurations using 1.5 and 2.0-mm locking compression plates (LCPs) with notched head T-Plates. Aim To provide a noninvasive approach to analyzing the immediate consequences of screw removal from the radius bone in toy poodles. Specifically, it explores the impact of varied plate designs and screw arrangements on stress distribution within the forelimb bones. Methods The study constructs a three-dimensional bone model of the toy poodle's forelimb based on computed tomography (CT) images. Simulations were designed to replicate jumping and landing from a 40 cm height, comparing stress distribution in the radius post-screw removal. Results The analysis reveals significant variations in stress distribution patterns between the two LCPs. The radius implanted with the 2.0-mm LCP displays a uniform stress distribution, contrasting with the 1.5-mm plates. Localized stress concentration is observed around the screw holes, while trabecular bone regions near the screw holes exhibit lower stress levels. Conclusion The study highlights the plate designs and screw configurations that affect bone stress in toy poodle forelimbs post-screw removal. The findings provide valuable insights for veterinarians, aiding informed decisions in veterinary orthopedic practices.
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Affiliation(s)
- Dito Anggoro
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Japan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, Gadjah Mada University, Indonesia
| | - Melpa Susanti Purba
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Japan
| | - Fei Jiang
- Department of Mechanical Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Japan
| | - Norihiro Nishida
- Department of Orthopedic Surgery, Graduate School of Medicine, Yamaguchi University, Japan
| | - Harumichi Itoh
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
| | - Kazuhito Itamoto
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
| | - Yuki Nemoto
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
| | - Hiroshi Sunahara
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Japan
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Itoh H, Itamoto T, Tani K, Sunahara H, Nemoto Y, Nakaichi M, Iseri T, Horikirizono H, Itamoto K. Relationship between clinical parameters and malformations in dogs diagnosed with atlanto-axial instability. PLoS One 2024; 19:e0293363. [PMID: 38324604 PMCID: PMC10849214 DOI: 10.1371/journal.pone.0293363] [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: 05/06/2023] [Accepted: 10/11/2023] [Indexed: 02/09/2024] Open
Abstract
Atlanto-axial instability is a common disease that affects toy-breed dogs. Most cases of atlanto-axial instability are congenital. Furthermore, patients with atlanto-axial instability are predisposed to other concurrent diseases. Therefore, this study aimed to retrospectively determine the presence of concurrent diseases in cases with atlanto-axial instability using imaging data and analyze the relationship between clinical parameters and the incidence of complex malformations. The clinical data and imaging findings of 41 toy-breed dogs diagnosed with atlanto-axial instability were analyzed using their medical records and imaging data. Occipital dysplasia (17/27), atlanto-occipital overlapping (22/34), dens dysplasia (27/41), Chiari-like malformation (8/34), syringomyelia (5/34), lateral ventricular enlargement (20/36), and intracranial arachnoid cyst (5/35) were observed in patients with atlanto-axial instability. The body weight of the patients in the groups with atlanto-occipital overlapping and lateral ventricular enlargement was lower than that of those in the groups without these diseases (1.78 ± 0.71 vs 2.71 ± 1.15 kg, P = 0.0269, 1.60 ± 0.40 vs 2.75 ± 1.08 kg, P = 0.001, respectively). Furthermore, when the correlation between the total number of concurrent diseases and the age at onset and body weight was examined, it became clear that lower body weight was associated with the incidence of a greater number of concurrent diseases. Thus, the findings of this study suggest that toy-breed dogs are more likely to present with complex malformations and should be evaluated carefully with additional examinations and treatment methods.
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Affiliation(s)
- Harumichi Itoh
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Takuya Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Toshie Iseri
- Laboratory of Veterinary Radiology Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Hiro Horikirizono
- Laboratory of Veterinary Radiology Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi City, Yamaguchi, Japan
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Horikirizono H, Nakaichi M, Itoh H, Itamoto K, Nemoto Y, Sunahara H, Tani K. Intraoperative hypertensive crisis in a dog with functional paraganglioma of the gall bladder. J Small Anim Pract 2024; 65:144-148. [PMID: 37559209 DOI: 10.1111/jsap.13665] [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: 04/01/2023] [Revised: 06/11/2023] [Accepted: 07/12/2023] [Indexed: 08/11/2023]
Abstract
A 15-year-old spayed female mongrel presented with anorexia and an abdominal mass. The mass originated from the gall bladder and was surgically resected along with divisionectomy of the central hepatic division. Paroxysmal hypertension and tachycardia were noted during manipulation of the mass. Following resection, arterial blood pressure decreased significantly. Histopathological analysis confirmed a diagnosis of neuroendocrine neoplasm. Immunohistochemical staining for synaptophysin and chromogranin A yielded diffuse and strong positive results, while gastrin was positive in only 10% of the cells. The preoperative elevated concentrations of catecholamine in the urinalysis showed a marked decrease after surgery. Based on these findings, the tumour was diagnosed as a functional paraganglioma of the gall bladder. The patient has undergone regular thoracic radiographs and ultrasound examinations and, until 431 days after surgery, has shown no signs of metastases or recurrences. Based on our literature search, we report the first case of functional paraganglioma of the gall bladder in a dog.
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Affiliation(s)
- H Horikirizono
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
- Animal Medical Centre, Faculty of Applied Biological Sciences, Gifu University, 1-1, Yanagido, Gifu, 501-1193, Japan
| | - M Nakaichi
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
| | - H Itoh
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
| | - K Itamoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
| | - Y Nemoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
| | - H Sunahara
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
| | - K Tani
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8515, Japan
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Anggoro D, Purba MS, Nishida N, Itoh H, Itamoto K, Nemoto Y, Nakaichi M, Sunahara H, Tani K. Quantitative evaluation of the biomechanical and viscoelastic properties of the dog patellar tendon in response to neuromuscular blockade at different stifle angles. PLoS One 2024; 19:e0292453. [PMID: 38166027 PMCID: PMC10760779 DOI: 10.1371/journal.pone.0292453] [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: 05/31/2023] [Accepted: 09/14/2023] [Indexed: 01/04/2024] Open
Abstract
The patellar tendon (PT) is crucial for maintaining stability and facilitating movement in the stifle joint. Elastography has been recognized as a prominent method for evaluating PT properties in humans and dogs. The utilization of oscillation methods in canine studies remains limited despite their extensive documentation in human studies. Our study represents the first effort to quantitatively assess and compare the effects of muscle relaxant on the biomechanical and viscoelastic characteristics of the PT at varying stifle angles in living dogs. Five healthy female beagles were used in this study. Biomechanical (tone, stiffness, and decrement) and viscoelastic (relaxation time and creep) properties of the PT were measured using MyotonPRO (Myoton Ltd, Estonia) prior to and following administration of rocuronium (0.5 mg/kg/body weight) at normal, extended, and flexed positions. Rocuronium was selected for its safety, controllability, and widespread clinical use in veterinary anesthesia. Two-way analysis of variance showed that tone, stiffness, and decrement were significantly higher (P < 0.001) in the control group than in the muscle relaxation group. At the same time, relaxation time and creep were significantly lower (P < 0.001) in the control group than in the muscle relaxation group. The findings indicate that stifle angle position and muscle rexalant administration fundamentally alter the biomechanical loading conditions of the PT, leading to changes in its viscoelastic properties. Therefore, this novel quantitative data could benefit clinical settings that necessitate accurate and objective methods for risk identification and monitoring PT biomechanics in dogs.
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Affiliation(s)
- Dito Anggoro
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, Gadjah Mada University, Yogyakarta, Indonesia
| | - Melpa Susanti Purba
- Laboratory of Veterinary Surgery, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Norihiro Nishida
- Department of Orthopedic Surgery, Graduate School of Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Laboratory of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Igase M, Inanaga S, Nishibori S, Itamoto K, Sunahara H, Nemoto Y, Tani K, Horikirizono H, Nakaichi M, Baba K, Kambayashi S, Okuda M, Sakai Y, Sakurai M, Kato M, Tsukui T, Mizuno T. Proof-of-concept study of the caninized anti-canine programmed death 1 antibody in dogs with advanced non-oral malignant melanoma solid tumors. J Vet Sci 2024; 25:e15. [PMID: 38311328 PMCID: PMC10839171 DOI: 10.4142/jvs.23144] [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: 06/05/2023] [Revised: 12/09/2023] [Accepted: 12/17/2023] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND The anti-programmed death 1 (PD-1) antibody has led to durable clinical responses in a wide variety of human tumors. We have previously developed the caninized anti-canine PD-1 antibody (ca-4F12-E6) and evaluated its therapeutic properties in dogs with advance-staged oral malignant melanoma (OMM), however, their therapeutic effects on other types of canine tumors remain unclear. OBJECTIVE The present clinical study was carried out to evaluate the safety profile and clinical efficacy of ca-4F12-E6 in dogs with advanced solid tumors except for OMM. METHODS Thirty-eight dogs with non-OMM solid tumors were enrolled prospectively and treated with ca-4F12-E6 at 3 mg/kg every 2 weeks of each 10-week treatment cycle. Adverse events (AEs) and treatment efficacy were graded based on the criteria established by the Veterinary Cooperative Oncology Group. RESULTS One dog was withdrawn, and thirty-seven dogs were evaluated for the safety and efficacy of ca-4F12-E6. Treatment-related AEs of any grade occurred in 13 out of 37 cases (35.1%). Two dogs with sterile nodular panniculitis and one with myasthenia gravis and hypothyroidism were suspected of immune-related AEs. In 30 out of 37 dogs that had target tumor lesions, the overall response and clinical benefit rates were 6.9% and 27.6%, respectively. The median progression-free survival and overall survival time were 70 days and 215 days, respectively. CONCLUSIONS The present study demonstrated that ca-4F12-E6 was well-tolerated in non-OMM dogs, with a small number of cases showing objective responses. This provides evidence supporting large-scale clinical trials of anti-PD-1 antibody therapy in dogs.
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Affiliation(s)
- Masaya Igase
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Sakuya Inanaga
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Shoma Nishibori
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Laboratory of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Yuki Nemoto
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Hiro Horikirizono
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Kenji Baba
- Laboratory of Veterinary Internal Medicine, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Satoshi Kambayashi
- Laboratory of Veterinary Internal Medicine, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Masaru Okuda
- Laboratory of Veterinary Internal Medicine, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Yusuke Sakai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Masashi Sakurai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Masahiro Kato
- Nippon Zenyaku Kogyo Co., Ltd., Koriyama, Fukushima 963-0196, Japan
| | - Toshihiro Tsukui
- Nippon Zenyaku Kogyo Co., Ltd., Koriyama, Fukushima 963-0196, Japan
| | - Takuya Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan.
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Kowatari M, Kim E, Tani K, Naito M, Tamakuma Y, Kurihara O. Effectiveness of simplified dose estimation equations for triage after criticality accident-a case study of dose assessment in the JCO criticality accident. Radiat Prot Dosimetry 2023; 199:1889-1893. [PMID: 37819310 DOI: 10.1093/rpd/ncac258] [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] [Received: 07/12/2022] [Revised: 11/06/2022] [Accepted: 11/14/2022] [Indexed: 10/13/2023]
Abstract
The dosimetry for the triage of personnel encountering a criticality accident was investigated. The JCO criticality accident of 1999 was selected as a case study, and attention was paid to the identification and the segregation of severely exposed personnel. A series of Monte Carlo calculations revealed that simplified equations proposed by ANSI to estimate dose with respect to distance work well to determine the region of interest for triage.
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Affiliation(s)
- M Kowatari
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - E Kim
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - K Tani
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - M Naito
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Y Tamakuma
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
- Center for Radiation Research and Education, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Nagasaki, Japan
| | - O Kurihara
- National Institute of Radiological Sciences, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
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Yajima K, Kim E, Tani K, Arae H, Iwaoka K, Hosoda M, Tokonami S, Kurihara O, Aono T. External dose measurements to investigate the body-size dependence of personal dosemeter responses in areas affected by the Fukushima Daiichi nuclear accident. Radiat Prot Dosimetry 2023; 199:2000-2004. [PMID: 37819292 DOI: 10.1093/rpd/ncac274] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/24/2022] [Accepted: 11/14/2022] [Indexed: 10/13/2023]
Abstract
To formulate necessary protective measures after a large-scale nuclear accident, it is crucial to understand the levels of radiation to which persons living in radionuclide-contaminated areas are exposed. Individual monitoring using personal dosemeters (PDs) plays a role in this, although PDs were not originally intended to be used by members of the public. The present study investigated PD responses in areas highly affected by the Fukushima Daiichi nuclear accident, as well as the dependence of those measurements on body size. Three types of commercially available electronic PDs, including D-shuttle, which has often been used in Fukushima, were placed on the front surfaces of three age-specific anthropometric phantoms imitating a 5-y-old, a 10-y-old and an adult male, and these phantoms were then exposed to radiation in an open field in the affected area. In the case of D-shuttle, the ratios of PD readings to the ambient dose rate for the 5-y-old phantom and the adult male phantom were 0.79 and 0.72, respectively. The ratios were somewhat higher for the other PDs; any PDs showed higher readings than the effective doses estimated by simulations based on the assumed ground deposition of 134Cs and/or 137Cs over the affected areas.
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Affiliation(s)
- K Yajima
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - E Kim
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - K Tani
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - H Arae
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - K Iwaoka
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - M Hosoda
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan
| | - S Tokonami
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Aomori 036-8564, Japan
| | - O Kurihara
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
| | - T Aono
- National Institutes for Quantum Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
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10
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Kim E, Narita M, Takashima Y, Nakata A, Tani K, Kurihara O. Source efficiency of alpha-emitters applied to the skin surface. Radiat Prot Dosimetry 2023; 199:2010-2014. [PMID: 37819328 DOI: 10.1093/rpd/ncac239] [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] [Received: 07/14/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 10/13/2023]
Abstract
Skin surface contamination by alpha-emitters is in itself not hazardous, but it would cause significant internal exposure in the case of injured skin as well as misjudgment in direct in vivo measurements (e.g. lung counting). The present study determined the source efficiency of alpha-emitters (241Am) applied to swine skin samples by analysing the observed alpha-particle energy spectra using advanced alpha-spectrometric simulation. Based on our results, the source efficiency was determined to be 0.365 (alpha-particle s-1 per Bq) on average (c.f. 0.5 in the case of no self-absorption in the source). The decrease in source efficiency would be attributed primarily to the radionuclide entering hair follicles or deep wrinkles. The degradation of the measured spectra from the skin samples indicates the penetration of some radionuclides into the upper layers of the stratum corneum. Although this study was limited to results obtained from swine skin samples, it suggests that irregularities in the skin surface may affect direct alpha measurements.
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Affiliation(s)
- E Kim
- National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
| | - M Narita
- National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
| | - Y Takashima
- National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
| | - A Nakata
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 7-Jo 15-4-1 Maeda, Teine, Sapporo 006-8585, Japan
| | - K Tani
- National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
| | - O Kurihara
- National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
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11
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Nakaichi M, Itamoto T, Nemoto Y, Sunahara H, Itoh H, Itamoto K, Tani K. Osteosarcoma of the hyoid bone in a cat. JFMS Open Rep 2023; 9:20551169231188642. [PMID: 37781726 PMCID: PMC10540576 DOI: 10.1177/20551169231188642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
Case summary A 10-year-old male neutered Abyssinian cat was presented with the chief complaint of a right pharyngeal mass. On palpation, the mass was easily palpable; it appeared well demarcated and mobile, and oval in shape. Radiographic examination showed a radiopaque pharyngeal mass, which was revealed to be a well-demarcated mass lesion with a radiopaque marginal area on CT examination. The inside of the mass was uniformly well enhanced on contrast CT examination. A three-dimensional image reconstructed from the CT images strongly suggested that the mass originated from the right stylohyoid bone. No abnormal lesions were observed in the thoracic and abdominal CT examinations. Surgical excision of the mass was scheduled 3 weeks after the first admission. The mass was bluntly separated from the surrounding musculature and resected together with the ipsilateral epihyoid bone adjacent to the mass. Histopathological examination of the resected mass showed neoplastic cells with osteoid formation, and the mass was histopathologically diagnosed as an osteosarcoma. The postoperative recovery from anaesthesia was uneventful, and the cat began feeding on its own from the third postoperative day. The 3-month postoperative CT evaluation revealed no local recurrence or distant metastasis. The cat showed no abnormal findings at the time of writing (6 months postoperatively). Relevance and novel information Although osteosarcoma derived from the hyoid bone has rarely been reported in the veterinary field, this report suggests that such tumours may occur in cats. In addition, partial excision of the hyoid apparatus seems to be well tolerated in cats.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Takuya Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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12
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Tejada MLG, Sano T, Hanyu T, Koppers AAP, Nakanishi M, Miyazaki T, Ishikawa A, Tani K, Shimizu S, Shimizu K, Vaglarov B, Chang Q. New evidence for the Ontong Java Nui hypothesis. Sci Rep 2023; 13:8486. [PMID: 37231104 DOI: 10.1038/s41598-023-33724-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 04/18/2023] [Indexed: 05/27/2023] Open
Abstract
The formation of the Ontong Java Nui super oceanic plateau (OJN), which is based on the model that the submarine Ontong Java Plateau (OJP), Manihiki Plateau (MP), and Hikurangi Plateau (HP) were once its contiguous fragments, could have been the largest globally consequential volcanic event in Earth's history. This OJN hypothesis has been debated given the paucity of evidence, for example, the differences in crustal thickness, the compositional gap between MP and OJP basalts and the apparent older age of both plateaus relative to HP remain unresolved. Here we investigate the geochemical and 40Ar-39Ar ages of dredged rocks recovered from the OJP's eastern margin. Volcanic rocks having compositions that match the low-Ti MP basalts are reported for the first time on the OJP and new ~ 96-116 Ma and 67-68 Ma 40Ar-39Ar age data bridge the temporal gap between OJP and HP. These results provide new evidence for the Ontong Java Nui hypothesis and a framework for an integrated tectonomagmatic evolution of the OJP, MP, and HP. The isotopic data imply four mantle components in the source of OJN that are also expressed in present-day Pacific hotspots sources, indicating origin from (and longevity of) the Pacific Large Low Shear-wave Velocity Province.
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Affiliation(s)
- M L G Tejada
- Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan.
| | - T Sano
- Department of Geology and Paleontology, National Museum of Nature and Science, Tsukuba, 305-005, Japan
| | - T Hanyu
- Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan
| | - A A P Koppers
- College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR, 97331, USA
| | - M Nakanishi
- Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - T Miyazaki
- Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan
| | - A Ishikawa
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo, 152-8550, Japan
| | - K Tani
- Department of Geology and Paleontology, National Museum of Nature and Science, Tsukuba, 305-005, Japan
| | - S Shimizu
- Graduate School of Science and Engineering, Chiba University, Chiba, 263-8522, Japan
| | - K Shimizu
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, Kochi, 783-8502, Japan
| | - B Vaglarov
- Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan
| | - Q Chang
- Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, Yokosuka, 237-0061, Japan
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13
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Itamoto K, Itoh H, Sunahara H, Horikirizono H, Nemoto Y, Tani K, Iseri T, Nakaichi M. Comparison of surgical invasiveness between micro-endoscopic discectomy/microscopic discectomy and conventional hemilaminectomy in dogs. J Vet Med Sci 2023. [PMID: 37100630 DOI: 10.1292/jvms.22-0226] [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] [Indexed: 04/28/2023] Open
Abstract
Micro-endoscopic discectomy (MED) or microscopic discectomy (MD) have been performed for disc herniation in humans. The purpose of this study was to compare the invasiveness of the hemilaminectomy in dogs between the approach using a cylindrical retractor for the MED/MD and a conventional open surgical approaches in dogs. First, as preliminary studies, we analyzed the suitability of the cylindrical retractor for the vertebral body of small to medium-sized dogs on the X-ray computed tomographic images using the three-dimensional analysis software, and confirmed that it was possible to open a bone window of an approximate length of 1.72 clto the spinal canal with the cylindrical retractor with a diameter 17 mm using two medium-sized canine cadavers. Next, to determine difference in the invasiveness of hemilaminectomy, the magnitude of tissue damage, surgical stress and postoperative pain were compared between the conventional open approach (hemilaminectomy group: HL group, n=6) and the surgical approach using the cylindrical retractor (MD group, n=6) in 12 beagle dogs. The plasma creatine phosphokinase, C-reactive protein and cortisol concentrations, incision length and University of Melbourne Pain Scale scores after the hemilaminectomy were significantly lower in the MD group than in the HL group. There were no significant differences between the durations of surgery and the other evaluated indices. The approach using the MD can provide a less invasive hemilaminectomy than the conventional approach in dogs.
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Affiliation(s)
- Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University
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14
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Iseri T, Tanabe Y, Onizuka R, Torigoe Y, Horikirizono H, Itamoto K, Sunahara H, Itoh H, Tani K, Nakaichi M. A Monte Carlo study on dose distribution of an orthovoltage radiation therapy system. Phys Eng Sci Med 2023; 46:623-632. [PMID: 36940063 DOI: 10.1007/s13246-023-01237-4] [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: 10/25/2021] [Accepted: 02/23/2023] [Indexed: 03/21/2023]
Abstract
It is important to plan radiotherapy treatment and establish optimal dose distribution to reduce the chances of side effects and injury. Because there are no commercially available tools for calculating dose distribution in orthovoltage radiotherapy in companion animals, we developed an algorithm to accomplish this and verified its characteristics using tumor disease cases. First, we used the Monte Carlo method to develop an algorithm to calculate the dose distribution of orthovoltage radiotherapy (280 kVp; MBR-320, Hitachi Medical Corporation, Tokyo, Japan) using BEAMnrc at our clinic. Using development of Monte Carlo method, dose distribution for tumor and normal organs were evaluated in brain tumors, squamous cell carcinomas of the head, and feline nasal lymphomas. In all cases of brain tumors, the mean dose delivered to the GTV ranged from 36.2 to 76.1% of the prescribed dose due to the decrease through the skull. In the nasal lymphoma in cats, the eyes with covered a 2 mm-thick lead plate, the respective average dose to the eyes was 71.8% and 89.9% less than that to the uncovered eyes. The findings may be useful for informed decision making in orthovoltage radiotherapy with more effective and targeted irradiation and data collection allowing detailed informed consent.
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Affiliation(s)
- Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi, Yamagishi, Japan.
| | - Yoshinori Tanabe
- Graduate School of Health Sciences, Okayama University, Okayama, Japan
| | - Ryouta Onizuka
- Department of Therapeutic Radiology, Yamaguchi University Hospital, Yamaguchi, Japan
| | - Yuri Torigoe
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi, Yamagishi, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi, Yamagishi, Japan
| | - Kazuhito Itamoto
- Animal medical center, Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Animal medical center, Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi, Yamagishi, Japan
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15
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Okura Y, Takeuchi C, Yamaguchi H, Tani K. Factors associated with anxiety and depression among caregivers of patients receiving medical home visits. J Med Invest 2023; 70:443-449. [PMID: 37940530 DOI: 10.2152/jmi.70.443] [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] [Indexed: 11/10/2023]
Abstract
In recent years, Japan has promoted home visits to support older adults, with caregivers playing an important role. However, caregivers generally experience a high frequency of anxiety and depression, and the factors associated with these conditions among home visit caregivers remain unknown. To identify the associated factors, we conducted a questionnaire-based cross-sectional study of home visit caregivers in Tokushima Prefecture, Japan. The survey included caregivers' Hospital Anxiety and Depression Scale;sociodemographic items of patients and caregivers;and caregivers' perceptions of the home care environment, patients, and themselves. The questionnaires were sent to 379 caregivers;203 responded (53.6% response rate), of which 173 were valid (85.2% valid response rate). The prevalence of anxiety and depression was 43.9% and 69.4%, respectively. Multiple logistic regression analysis of factors associated with anxiety and depression showed that stable family finances (OR:0.69, 95% CI:0.48-1.00, p=0.049) and stable caregiver health (OR:0.45, 95% CI:0.30-0.68, p<0.001) were associated with anxiety. Further, stable family finances (OR:0.60, 95% CI:0.38-0.93, p=0.022), stable caregiver health (OR:0.49, 95% CI:0.30-0.81, p=0.005), and stable patient condition (OR:0.51, 95% CI:0.29-0.92, p=0.025) were associated with depression. These findings demonstrate that caregiver wellbeing is essential in home care settings. J. Med. Invest. 70 : 443-449, August, 2023.
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Affiliation(s)
- Yoshihiro Okura
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Chisato Takeuchi
- Department of General Medicine, University of Tokushima Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, University of Tokushima Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kenji Tani
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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16
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Khoa ND, Phuong NL, Tani K, Inthavong K, Ito K. In-silico decongested trial effects on the impaired breathing function of a bulldog suffering from severe brachycephalic obstructive airway syndrome. Comput Methods Programs Biomed 2023; 228:107243. [PMID: 36403552 DOI: 10.1016/j.cmpb.2022.107243] [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] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND AND OBJECTIVE Brachycephalic obstructive airway syndrome (BOAS) susceptible dogs (e.g., French bulldog), suffer health complications related to deficient breathing primarily due to anatomical airway geometry. Surgical interventions are known to provide acceptable functional and cosmetic results; however, the long-term post-surgery outcome is not well known. In silico analysis provides an objective measure to quantify the respiratory function in postoperative dogs which is critical for successful long-term outcomes. A virtual surgery to open the airway can explore the ability for improved breathing in an obstructed airway of a patient dog, thus supporting surgeons in pre-surgery planning using computational fluid dynamics. METHODS In this study five surgical interventions were generated with a gradual increment of decongested levels in a bulldog based on computed tomography images. The effects of the decongested airways on the breathing function of a patient bulldog, i.e., airflow characteristics, pressure drop, wall shear stress, and air-conditioning capacity, were quantified by benchmarking against a clinically healthy bulldog using computational fluid dynamics (CFD) method. RESULTS Our findings demonstrated a promising decrease in excessive airstream velocity, pressure drop, and wall shear stress in virtual surgical scenarios, while constantly preserving adequate air-conditioning efficiency. A linear fit curve was proposed to correlate the reduction in the pressure drop and decongested level. CONCLUSIONS The in silico analysis is a viable tool providing visual and quantitative insight into new unexplored surgical techniques.
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Affiliation(s)
- Nguyen Dang Khoa
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1, Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan.
| | - Nguyen Lu Phuong
- Faculty of Environment, University of Natural Resources and Environment, Ho Chi Minh, Viet Nam
| | - Kenji Tani
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Yamaguchi, Japan
| | - Kiao Inthavong
- School of Engineering, Mechanical & Automotive, RMIT University, Melbourne, Australia
| | - Kazuhide Ito
- Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan
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17
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Nemoto Y, Nakaichi M, Sakurai M, Itamoto K, Morimoto M, Horikirizono H, Itoh H, Sunahara H, Tani K. Histiocytic sarcoma with spinal necrosis in a dog with progressing non-ambulatory tetraparesis. Open Vet J 2023; 13:394-399. [PMID: 37026072 PMCID: PMC10072830 DOI: 10.5455/ovj.2023.v13.i3.18] [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: 12/01/2022] [Accepted: 02/17/2023] [Indexed: 03/30/2023] Open
Abstract
Background:
Histiocytic sarcoma (HS) is an aggressive malignant neoplasm, and widespread metastasis occurs with a fatal outcome. HS involving the central nervous system is relatively uncommon. Spinal cord necrosis, a very rare condition, could be induced by ischemia or infarction. Here, we report a dog progressing non-ambulatory tetraparesis with spinal cord necrosis caused by HS.
Case Description:
A 9-year-old male Labrador retriever was presented with a progressing non-ambulatory tetraparesis. CT imaging revealed lysis of the spinous process of T7 and a ring-shaped lesion surrounding the soft tissue of lung fields. T2-weighted MRI showed the spinous processes of T6 to T8 as hyperintense, and the lesion infiltrated into the T7 vertebra and the spinal cord. After euthanasia, the final diagnosis upon necropsy was HS, which was observed in the lung, spinous process, thoracic cord, and the pulmonary hilar lymph node. Moreover, necrotic spots were spread widely through the thoracic spinal cord.
Conclusion:
This report outlines a case of canine HS in the lung, spinous process, thoracic cord, and pulmonary hilar lymph node. Ischemic deficit and necrosis of the thoracic spinal cord resulted from the compression of perivascular tumor cells, which rapidly led to progressive tetraparesis. Although the diagnosis was difficult, MRI and CT images helped determine the prognosis. To our knowledge, this is the first case report of canine HS with direct spinal cord involvement associated with spinal necrosis.
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Affiliation(s)
- Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
- Corresponding Author: Yuki Nemoto. Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan. .
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Masashi Sakurai
- Department of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Masahiro Morimoto
- Department of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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18
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Kawahito K, Yamaguchi H, Nakanishi Y, Kawaminami S, Tabata R, Okura Y, Tani K. Feelings toward medicine in remote areas among medical students aiming to become generalists : A comparison with other specialists. J Med Invest 2023; 70:129-134. [PMID: 37164708 DOI: 10.2152/jmi.70.129] [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] [Indexed: 05/12/2023]
Abstract
Geographic maldistribution of physicians is a serious problem in Japan, resulting in a few physicians in remote areas. We distributed questionnaires to 396 medical students at Tokushima University from 2013 to 2016. We examined the intensity of medical students toward medicine in remote areas by using a visual analog scale and investigated what medical specialty they chose after two years of clinical training. The intensity of interest in medicine and the intensity of willingness to contribute to it in remote areas were statistically higher among medical students who intended to choose general medicine. After graduation, only five participants chose to specialize in general medicine. Of the 14 medical students who originally chose general medicine, six chose internal medicine, three chose general medicine, and the others chose surgery, neurosurgery, anesthesiology, orthopedics, or emergency medicine. This study demonstrated that medical students who intend to choose general medicine have a higher intensity of willingness to contribute to medicine in remote areas, indicating that the support program for these students to become general practitioners after graduation increases the number of physicians in remote areas. J. Med. Invest. 70 : 129-134, February, 2023.
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Affiliation(s)
- Keisuke Kawahito
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshinori Nakanishi
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Shingo Kawaminami
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Ryo Tabata
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshihiro Okura
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Kenji Tani
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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19
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Yamaguchi H, Kagoshima S, Okura Y, Nakanishi Y, Kawahito K, Tani K. Does student evaluation of on-demand video lectures vary with student characteristics? A questionnaire survey of medical students at Tokushima University. J Med Invest 2023; 70:483-493. [PMID: 37940536 DOI: 10.2152/jmi.70.483] [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] [Indexed: 11/10/2023]
Abstract
The popularity of online classes in university education has grown rapidly since the COVID-19 outbreak. This study aims to examine the association between the detailed characteristics/various contexts of students and the evaluation of online classes. An online questionnaire survey administered to third- and fourth-grade medical students of Tokushima University in September 2021-with 101 (42.8%) valid responses-showed the respondents' general impressions, comprehension, convenience, and desire for online classes even after the pandemic ends were significantly higher for the on-demand lectures than for simultaneous online classes. Notably, students who did not do other things while watching video lectures (10.9%) rated on-demand lectures as facilitating significantly higher impression, comprehension, and convenience than those who did other things (89.1%). A multivariate analysis revealed that students who did not do anything else while watching, whose waking time changed slightly, who commuted to school for shorter periods, who were not good at morning lectures, and who watched at high speed rated the video lectures highly. Thus, video lectures are appreciated by students who are committed to learning, which is a positive result for the future of on-demand education. J. Med. Invest. 70 : 483-493, August, 2023.
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Affiliation(s)
- Harutaka Yamaguchi
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
- Department of General Medicine, Taoka Hospital, Tokushima, Japan
| | | | - Yoshihiro Okura
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Yoshinori Nakanishi
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Keisuke Kawahito
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kenji Tani
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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20
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Yamaguchi H, Okura Y, Inaba K, Inaba K, Takahashi R, Tani K. Comparison of therapeutic responses between polymyalgia rheumatica and remitting seronegative symmetrical synovitis with pitting edema syndrome. J Med Invest 2023; 70:145-149. [PMID: 37164711 DOI: 10.2152/jmi.70.145] [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] [Indexed: 05/12/2023]
Abstract
Polymyalgia rheumatica (PMR) and remitting seronegative symmetrical synovitis with pitting edema (RS3PE) syndrome are common inflammatory rheumatic diseases in the elderly. In this study, we investigated the difference of the therapeutic responses between patients with PMR and RS3PE syndrome. Twenty-four patients with PMR and 12 patients with RS3PE syndrome were treated with initial dosages of 10-20 mg per day oral prednisolone, and the dosages were then tapered. Percentages of patients with negative c-reactive protein (CRP) after 8-week treatment were significantly more in RS3PE syndrome than in PMR. Percentages of patients with relapse during one-year treatment were less likely to be in RS3PE syndrome than in PMR. These differences observed between the two disorders were not associated with the level of initial CRP. There was no significant difference in percentages of patients with prednisolone-free remission after two-year treatment between PMR and RS3PE syndrome. These results indicate that the early response to the treatment is greater in RS3PE syndrome than in PMR. J. Med. Invest. 70 : 145-149, February, 2023.
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Affiliation(s)
- Harutaka Yamaguchi
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoshihiro Okura
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Kaori Inaba
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
- Kaifu Tokushima Prefectural Hospital, Tokushima, Japan
| | - Keisuke Inaba
- Department of General Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
- Kaifu Tokushima Prefectural Hospital, Tokushima, Japan
| | | | - Kenji Tani
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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21
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Igase M, Inanaga S, Tani K, Nakaichi M, Sakai Y, Sakurai M, Kato M, Tsukui T, Mizuno T. Long-term survival of dogs with stage 4 oral malignant melanoma treated with anti-canine PD-1 therapeutic antibody: A follow-up case report. Vet Comp Oncol 2022; 20:901-905. [PMID: 35535636 DOI: 10.1111/vco.12829] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 02/19/2022] [Revised: 05/06/2022] [Accepted: 05/06/2022] [Indexed: 11/29/2022]
Abstract
A monoclonal antibody targeting programmed cell death-1 (PD-1) is one of the most promising treatments for human cancers. Clinical studies in humans demonstrated that the anti-PD-1 antibody provides a long-lasting tumour response. Previously, we established an anti-canine PD-1 therapeutic antibody (ca-4F12-E6), and the pilot clinical study demonstrated that the antibody was effective in dogs with oral malignant melanoma (OMM). However, two OMM cases were still undergoing treatment when the pilot study was published. Here, we describe the long-term follow-up of those two cases. Although both cases showed long-term survival with complete response (CR), the tumour response differed; the effect onset was slow in one case and a durable response was observed in the second case even after treatment discontinuation. Secondary malignant tumours occurred during treatment in both cases. This follow-up study revealed that ca-4F12-E6 maintains CR in dogs for more than 1 year. In addition, the pattern of tumour response was unique compared to conventional therapy. These results indicate that new evaluation criteria for tumour response may be necessary for immunotherapy in veterinary medicine. Long-term follow-up is necessary regardless of the short-term treatment responsiveness.
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Affiliation(s)
- Masaya Igase
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Sakuya Inanaga
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yusuke Sakai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Masashi Sakurai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Masahiro Kato
- Nippon Zenyaku Kogyo Co., Ltd., Koriyama, Fukushima, Japan
| | | | - Takuya Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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22
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Tabata R, Yamaguchi H, Ookura Y, Tani K. Complementary and alternative medicines chosen for specific health problems: Internet survey using the I-CAM-Q in Japan: A STROBE-compliant cross-sectional study. Medicine (Baltimore) 2022; 101:e31098. [PMID: 36254091 PMCID: PMC9575747 DOI: 10.1097/md.0000000000031098] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This study investigated the different complementary and alternative medicines (CAMs) adopted by people in Japan, as well as the health problems treated with CAMs. Understanding more about this topic will facilitate the appropriate incorporation of CAMs into conventional medicine when treating health problems. Data were collected through an online survey based on the International Questionnaire to Measure Use of Complementary and Alternative Medicine (I-CAM-Q). The study examined CAM utilization among people aged 20 years or older; 164 valid responses were collected (18.9%). We adopted a cross-sectional design. We then compared the relationships between the specific health problems reported by participants, their self-help practices, and the kinds of healthcare specialists consulted. We also examined participants' reasons for using CAMs and their responses regarding the usefulness of the CAMs adopted. We found that self-help/CAM practices differed for specific health problems. Participants with musculoskeletal and heart problems were more likely to use poultices. Those with respiratory and digestive problems were more likely to practice yoga, tai chi, and qigong. Those with digestive and neurological problems were more likely to use aromatherapy. The I-CAM-Q questionnaire also revealed the purpose and usefulness of the CAMs utilized as well as the participants' attitudes regarding conventional medicine. The study showed that participants find physicians less helpful than other options for treating their health problems. Additionally, when asked whether it was helpful to consult with a specific professional for health problems, there was a higher percentage of participants who answered "Very helpful" for professionals, like massage, judo, acupuncture, and moxibustion therapists, than for physicians. The results of this study will help to inform medical providers of the most appropriate types of CAMs for dealing with various health problems.
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Affiliation(s)
- Ryo Tabata
- Department of General Medicine, University of Tokushima Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, University of Tokushima Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Yoshihiro Ookura
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Kenji Tani
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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Nakasone K, Nishimori M, Kiuchi K, Shinohara M, Fukuzawa K, Takami T, Nakamura T, Sonoda Y, Takahara H, Yamamoto K, Suzuki Y, Tani K, Iwai H, Nakanishi Y, Hirata K. Prediction of difficulty in cryoballoon ablation with a 3D deep learning model using polygonal mesh representation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Cryoballoon ablation (CBA) is a useful treatment for pulmonary vein isolation (PVI). Some cases, however, are difficult to treat and may require multiple freezing procedures and/or touch-up ablation. Although several predictors of CBA difficulty have been reported, no report has been able to assess the spatial location and morphology of the left atrium (LA) and pulmonary veins (PVs). A polygonal mesh is a collection of vertices, edges, and faces that defines the shape of a polyhedral object, and is able to represent a spatial location with a small amount of information. We hypothesized that a deep learning model that learns mesh representation datasets could more accurately detect the CBA difficulty and that we could establish a novel evaluation method in CBA.
Purpose
The aim of this study was to create a model to predict CBA difficulty with a 3D deep learning model using polygonal mesh representation.
Methods and results
All the 140 patients who underwent CBA for drug-resistant atrial fibrillation between January 2015 and January 2022 were included. A 28-mm cryoballoon (Arctic Front Advance, Medtronic) was used in all cases. We defined CBA difficulty as requiring a touch-up ablation procedure to create complete PVI. We converted the volume data in DICOM format of the computed tomography images of PVs and LA to obj file format (shown in Figure 1), which supports the definition of the geometry for object surfaces using polygonal meshes. Next, we developed a deep learning model that could learn polygonal meshes and classify whether the CBA required touch-up ablation or not. Only a training dataset is used to train the deep learning model, and finally, a test dataset is used to evaluate the model metrics. The accuracy, area under the ROC curve, recall, precision, and f1-score of the deep learning model using the test dataset was 86.5%, 87.7%, 66.7%, 75.0%, 70.6%, respectively.
Conclusions
We developed a 3D deep learning model that can detect a difficulty in CBA using polygonal mesh representation. By predicting difficult cases in advance, we will be able to develop strategies to increase the success rate.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - K Tani
- Kobe University , Kobe , Japan
| | - H Iwai
- Kobe University , Kobe , Japan
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Itoh H, Igari K, Tani K, Sunahara H, Nemoto Y, Nakaichi M, Iseri T, Horikirizono H, Itamoto K. Clinical relationship between histopathological necrotic/partial necrotic findings and disease condition of gallbladder mucoceles in dogs. Pol J Vet Sci 2022; 25:223-229. [PMID: 35861958 DOI: 10.24425/pjvs.2022.141806] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Gallbladder mucocele (GM) is a common extrahepatic biliary disease recognized in dogs and is defined as the expansion and extension of the gallbladder by an accumulation of semi-solid bile or bile acid. Histopathological diagnosis of necrotizing cholecystitis and transmural coagulative necrosis of the gallbladder wall shows poor prognosis. Conversely, histopathological diagnosis with partial necrotic findings is often achieved. We hypothesized that histopathological partial necrosis of the gallbladder wall is the primary lesion of necrotic cholecystitis or transmural ischemic necrosis. Therefore, we investigated the relationship between histopathological necrosis/ partial necrosis findings and their clinical conditions. We retrospectively analyzed 55 dogs diagnosed with GM that had undergone cholecystectomy at the Yamaguchi University Animal Medical Center. The group with histopathological necrosis/partial necrosis of the gallbladder wall showed elevated levels of preoperative white blood cells, alanine transaminase, alkaline phosphatase, γ-glutamyltransferase, total bilirubin, and C-reactive protein compared to the non-necrotic group. Partial necrosis of the gallbladder wall may affect the progression of the disease and hematological abnormalities. Additionally, all death cases until 2 weeks were included in the histopathological necrosis/partial necrosis group. In this study, we found that poor prognosis factors were associated with partial necrosis of the gallbladder wall. Furthermore, these cases of partial necrosis showed elevated levels of blood test parameters. These results suggest that necrosis of the gallbladder wall is associated with poor prognosis and poor pathophysiological conditions.
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Affiliation(s)
- H Itoh
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi 753-8515, Japan
| | - K Igari
- Pet Clinic Hallelujah, 2544-1 Nakabaru, Kasuya, Kasuya-gun, Fukuoka 811-2304, Japan
| | - K Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi 753-8515, Japan
| | - H Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi 753-8515, Japan
| | - Y Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi 753-8515, Japan
| | - M Nakaichi
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi, 753-8511, Japan
| | - T Iseri
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi, 753-8511, Japan
| | - H Horikirizono
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi, 753-8511, Japan
| | - K Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi City, Yamaguchi 753-8515, Japan
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25
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Nakaichi M, Iseri T, Horikirizono H, Itoh H, Sunahara H, Nemoto Y, Itamoto K, Tani K. Pedigree study of the heredity of copper-associated hepatitis in Dalmatians in Japan. Can Vet J 2022; 63:633-636. [PMID: 35656524 PMCID: PMC9112360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The pedigrees of 3 Dalmatian dogs afflicted with copper-associated hepatitis were investigated to discover the mode of inheritance. A composite family pedigree showed that the 3 affected Dalmatians were related. None of the parents of the affected dogs showed clinical symptoms of liver disease, and the disease had no sex predisposition. The estimated segregation ratio was approximately 3:1 based on surviving littermates. These findings suggested that the copper-associated hepatitis in these Dalmatians was an autosomal recessive mode of inheritance. In addition, some male Dalmatians imported from abroad might have been involved in the occurrence of this disease in Japan.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Toshie Iseri
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Harumichi Itoh
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Yuki Nemoto
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Department of Veterinary Radiology (Nakaichi, Iseri, Horikirizono), Department of Veterinary Small Animal Clinical Science (Itoh, Itamoto), Department of Veterinary Surgery (Sunahara, Nemoto, Tani), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
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Iseri T, Horikirizono H, Abe M, Itoh H, Sunahara H, Nemoto Y, Itamoto K, Tani K, Nakaichi M. Outcomes of megavoltage radiotherapy for canine intranasal tumors and its relationship to clinical stages. Open Vet J 2022; 12:383-390. [PMID: 35821780 PMCID: PMC9270932 DOI: 10.5455/ovj.2022.v12.i3.12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/16/2022] [Indexed: 11/08/2022] Open
Abstract
Background: Radiation therapy is considered important for the treatment of intranasal tumors in dogs and is believed to be essential for prolonging their survival. Aim: To investigate the contribution of clinical staging to improve outcomes of megavoltage radiotherapy for canine intranasal tumors. Methods: A total of 123 dogs with intranasal tumors were included in the study. Forty-eight dogs received orthovoltage radiotherapy after cytoreductive surgery (Group I), 21 received orthovoltage radiotherapy without surgery (Group II), and 54 received megavoltage radiotherapy without surgery (Group III). All cases in each group were classified into clinical stages 1–4, and the median survival time (MST) was compared for each stage in all groups. Results: The overall MST was not significantly difference among Group I (325 days), Group II (317 days), and Group III (488 days); however, Group III was prolonged than Groups I and II. The MSTs for stages 1, 2, 3, and 4 were 597, 361, 267, and 325 days in Group I; 633, 260, 233, and 329 days in Group II; and 931, 860, 368, and 176 days in Group III, respectively. The MST for stage 2 cases in Group III was significantly prolonged when compared with that in Groups I and II; no significant difference was observed at other stages; however, the MST in Group III was longer in stage 1. These results showed that megavoltage radiotherapy prolonged the MST in dogs with intranasal tumors when compared to orthovoltage radiation with or without cytoreductive surgery, and that improvements in MST at stage 2 contributed significantly to this. Conclusion: The improvement in the MST in dogs with stages 1 and 2 intranasal tumors highlights the importance of starting megavoltage radiotherapy in the early stages.
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Affiliation(s)
- Toshie Iseri
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
- Corresponding Author: Toshie Iseri. Joint Faculty of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-City, Yamaguchi, 753-8515, Japan.
| | - Hiro Horikirizono
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Momoko Abe
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
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Iseri T, Hira N, Tanabe Y, Horikirizono H, Sunahara H, Itoh H, Nemoto Y, Itamoto K, Tani K, Nakaichi M. Evaluation of setup errors of immobilization device for radiation therapy in companion animals. Open Vet J 2022; 12:929-935. [PMID: 36650854 PMCID: PMC9805779 DOI: 10.5455/ovj.2022.v12.i6.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/01/2022] [Indexed: 12/26/2022] Open
Abstract
Background Intensity-modulated radiotherapy (IMRT), which allows generating steep dose gradients, is a beneficial treatment for companion animals with adjacent target and risk organs. IMRT is essential for high setup accuracy for avoiding overdose to risk organs, and optimal radiotherapy is important for evaluating the setup accuracy of companion animals. Aim To use an immobilization device to evaluate setup errors in radiotherapy for companion animals. Methods We calculated setup errors in radiotherapy for 386 animals (dogs and cats; 3,261 registration images) that underwent radiotherapy between 2016 and 2022. The companion animals were immobilized with a customized bite block and vacuum lock device. A quantile-quantile plot with 95% confidence interval (CI) was used to evaluate the histogram of the setup errors, and the systematic and random setup errors were calculated for each region (brain, head and neck, chest and abdomen, pelvis, and spine). Results The setup error in each direction presented an extremely narrow-interval histogram, with the following lower and upper 95% CIs: cranial-caudal (-0.08, -0.06 cm); left-right (-0.04, -0.02 cm); and dorsal-ventral (-0.13, -0.11 cm). The mean systematic setup error was 0.16 cm (range: 0.12-0.36 cm), and the random error was 0.15 cm (range: 0.08-0.34 cm). The pelvis showed the highest systematic and random setup errors (mean: 0.36 and 0.23 cm, respectively). Conclusion The use of an immobilization device enables highly accurate radiotherapy for companion animals (95% CI < 0.15 cm).
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Affiliation(s)
- Toshie Iseri
- Faculty of Agriculture, Animal Medical Emergency Center, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Nanami Hira
- Facilty of Health Sciences, Okayama University Medical School, Okayama, Japan
| | - Yoshinori Tanabe
- Faculty of Medicine, Graduate School of Health Sciences, Okayama University, Okayama, Japan,Corresponding Author: Yoshinori Tanabe. Faculty of Medicine, Graduate School of Health Sciences, Okayama University, Okayama, Japan.
| | - Hiro Horikirizono
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Nakaichi M, Iseri T, Horikirizono H, Itoh H, Sunahara H, Nemoto Y, Itamoto K, Tani K. A long survival case of spinal nephroblastoma in a dog. Open Vet J 2022; 12:188-191. [PMID: 35603077 PMCID: PMC9109834 DOI: 10.5455/ovj.2022.v12.i2.5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Dogs’ nephroblastoma of the spinal cord is a rare neoplastic disease, with few reports of long-term survival after surgery. We experienced that surgical treatment with postoperative radiation therapy for spinal nephroblastoma in a dog resulted in the long-term survival of 11 years. Case Description: The patient presented to our veterinary hospital because of progressive hindlimb paralysis. Based on diagnostic imaging, she was diagnosed with a thoracolumbar spinal cord tumor and was treated with surgery. The gross tumor tissue was removed after laminectomy, followed by postoperative radiation therapy using orthovoltage equipment. The histopathological features of the surgical specimen were consistent with those of previously reported spinal nephroblastoma, although infrequent mitotic figures were observed. The dog recovered well after treatment and resumed her normal walking condition. No tumor recurrence was observed on periodic follow-up magnetic resonance imaging performed 10 and 21 months after surgery. Imaging evaluation for the gradual development of hindlimb weakness was performed 9 years after surgery; however, no recurrence of tumor tissue was observed, and spondylosis deformans, probably induced after laminectomy, were identified as a possible cause. The dog died of aspiration pneumonia 11 years after surgery, independent of spinal nephroblastoma. Conclusion: To date, no clinical cases of canine spinal cord primary nephroblastoma that survived for 11 years after surgery have been reported. This case strongly suggests that providing intensive treatment for canine spinal nephroblastoma is very important.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
- Corresponding Author: Munekazu Nakaichi. Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
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Iseri T, Tanabe Y, Horikirizono H, Sunahara H, Itoh H, Nemoto Y, Itamoto K, Tani K, Tanaka H, Nakaichi M. Adjustment of multi-leaf collimator parameters in 4-MV and 6-MV IMRT: A study of veterinary clinical cases. Open Vet J 2022; 12:407-413. [PMID: 35821783 PMCID: PMC9270939 DOI: 10.5455/ovj.2022.v12.i3.15] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/25/2022] [Indexed: 11/06/2022] Open
Abstract
Background: For optimal treatment, it is important to maintain optimal multi-leaf collimator (MLC) transmission in intensity-modulated radiation therapy (IMRT). However, adjustment of transmissions has not been reported in veterinary medicine. Aim: To demonstrate that appropriate MLC parameter adjustment for IMRT using 4- and 6-MV energy can reduce the need for quality assurance revalidation in real companion animal clinical cases. Methods: The MLC parameters (leaf transmission and leaf offset) of the treatment planning system were adjusted by evaluating seven plans (10 × 10 cm, 3ABUT, DMLC, 7segA, FOURL, HDMLC, and HIMRT) and 20 preclinical cases (10 cases each in 4- and 6-MV groups). Subsequently, 101 IMRT plans of 88 cases (77 dogs and 11 cats) were evaluated for absolute dose of plan target volume (PTV) and organs at risk (OAR) and were analyzed for the relative dose distribution by gamma analysis (3%/3 mm, >10%) using EBT3 film. Results: After adjustment of the MLC parameters (leaf transmission and leaf offset, 4 MV: 0.008 and 0, 6 MV: 0.005 and 0, respectively), the data from 101 plans (4 MV: 64 plans and 6 MV: 37 plans) treated with IMRT showed PTV <3%, OAR <5%, and gamma analysis pass rates ≥95% in all cases. Conclusion: Clinically meaningful dose distributions can be created even with a limited validation device if the treatment parameters are adjusted appropriately, even for tumors in canines and felines, where the irradiation field is small, the target is adjacent to the OAR, and the target is often superficial.
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Affiliation(s)
- Toshie Iseri
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Yoshinori Tanabe
- Faculty of Medicine, Graduate School of Health Sciences, Okayama University, Okayama, Japan
- Corresponding Author: Yoshinori Tanabe. Faculty of Medicine, Graduate School of Health Sciences, Okayama University, 5-1 Shikata-cho, 2-chome, Kita-ku, Okayama, 700-8558, Japan.
| | - Hiro Horikirizono
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Hiroshi Sunahara
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Harumichi Itoh
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Yuki Nemoto
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Kazuhito Itamoto
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Kenji Tani
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
| | - Hidekazu Tanaka
- Faculty of Medicine and Health Sciences, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube-shi, Japan
| | - Munekazu Nakaichi
- Joint faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Japan
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30
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Nakasumi K, Yamamoto N, Takami T, Itoh H, Itamoto K, Horikirizono H, Iseri T, Nakaichi M, Nemoto Y, Sunahara H, Tani K. Effect of drug-eluting bead transarterial chemoembolization loaded with cisplatin on normal dogs. J Vet Med Sci 2021; 84:114-120. [PMID: 34866073 PMCID: PMC8810336 DOI: 10.1292/jvms.21-0396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Transcatheter arterial embolization (TAE) and transcatheter arterial chemoembolization (TACE) are standard treatments for advanced hepatocellular carcinoma (HCC) and particularly for unresectable tumors or liver metastases in humans. However, reports on TACE used in veterinary medicine are few. This study aimed to evaluate the feasibility and safety of drug-eluting bead transarterial chemoembolization (DEB-TACE). We performed DEB-TACE in four clinically normal dogs and pharmacokinetically compared the results against hepatic arterial infusion (HAI) of cisplatin in two dogs. Drug-eluting beads (DEB) loaded with cisplatin were injected through a microcatheter for selective embolization of the left hepatic artery. After embolization, computed tomography (CT) images and histological examination findings were obtained during a 4-week observation period. Serum platinum concentrations were measured to evaluate cisplatin after each procedure. Biochemical analysis was performed during a 12-week observation period. Embolization was successful in all dogs, and there were no clinically apparent abnormalities. Embolization was confirmed up to 4 weeks after DEB-TACE in two of the four dogs and up to 1 week in the other two dogs using postoperative CT images. Cisplatin was not detected in peripheral veins in all dogs after DEB-TACE, but it was detected in trace amounts after HAI. DEB-TACE using cisplatin was safe and well tolerated by normal dogs. DEB-TACE may be useful in terms of determining systemic toxicity and drug concentration within tumors.
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Affiliation(s)
- Ko Nakasumi
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Naoki Yamamoto
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University
| | - Taro Takami
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University
| | - Harumichi Itoh
- Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Kazuhito Itamoto
- Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Yuki Nemoto
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Hiroshi Sunahara
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
| | - Kenji Tani
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University
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31
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Nakasone K, Fukuzawa K, Kiuchi K, Takami M, Takemoto M, Sakai J, Nakamura T, Yatomi A, Sonoda Y, Takahara H, Yamamoto K, Suzuki Y, Tani K, Hirata K. VT recurrence and predictors in patients with VT inducibility at the end of VT ablation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
A successful Radiofrequency (RF) ablation of ventricular tachycardia (VT) can prevent VT recurrence. It has been reported that VT non-inducibility at the end of RF ablation is associated with less likely VT recurrence in ischemic cardiomyopathy (ICM) and non-ICM (NCIM). However, it is not clear whether we should use VT non-inducibility as routine end point in RF ablation of VT.
Purpose
The aim of this study was to evaluate VT recurrence in patients who couldn't be achieved VT non-inducibility at the end of RF ablation and the factors attributed to VT recurrence in ICM and NICM patients.
Methods
Between January 2009 and April 2020, 84 consecutive patients (ICM: 34, NICM: 50) underwent RF ablation for drug-resistant VT in our hospital. VT non-inducibility was defined as any ventricular tachy-arrhythmia, including clinical VT, non-clinical VT, and VF, was not induced by programed stimuli at the end of session. Non-inducibility was achieved in 37 patients but it was not achieved in 47 patients (ICM: 18, NICM: 29). To evaluate the validity of “non-inducibility” as an end point of VT ablation, 47 patients (male: 40, mean age: 66±15 years) in whom non-inducibility of any ventricular tachyarrhythmia was not achieved were studied. The primary endpoint was recurrence of any sustained VT and VF during follow up period (mean follow-up period was 1.4 (range, 0.0, 2.0) years.)
Results
Mean left ventricular ejection fraction (LVEF) was 36±13%. Epicardial ablation was required in 8 patients. 32 patients had electrical storm at the time of ablation. Among them, 21 patients had VT recurrence and 26 patients had non-VT recurrence during follow-up period. VT recurrence rate was significantly lower in patients with LVEF≥35% than those with LVEF<35% (HR=0.31, 95% CI 1.25–9.92). Multivariate survival analysis identified LVEF≥35% (HR=0.34, 95% CI 0.10–0.98) and ablation of VT isthmus (HR=0.18, 95% CI 0.02–0.78) as independent predictors of non-VT recurrence.
Conclusions
Even if non-inducibility of any ventricular tachyarrhythmia wasn't achieved at the end of ablation, the patients with LVEF≥35% or who had ablated of VT isthmus might prevent VT recurrence. The validity of non-inducibility of any ventricular tachyarrhythmia should be evaluated in each patient's background.
Funding Acknowledgement
Type of funding sources: Public hospital(s). Main funding source(s): Abbott, Medtronic
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Affiliation(s)
| | | | | | | | | | - J Sakai
- Kobe University, Kobe, Japan
| | | | | | | | | | | | | | - K Tani
- Kobe University, Kobe, Japan
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Sunahara H, Tani K, Nemoto Y, Itamoto K, Itoh H, Nakaichi M, Iseri T, Horikirizono H. Transient third-degree atrioventricular block during anesthesia in a cat. Open Vet J 2021; 11:662-666. [PMID: 35070861 PMCID: PMC8770184 DOI: 10.5455/ovj.2021.v11.i4.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/17/2021] [Indexed: 12/03/2022] Open
Abstract
Background: Third-degree atrioventricular block (AVB) is usually permanent, with transient cases being rare. Cats with transient third-degree AVB. It had been not reported in detail. Case Description: A 9.3-year-old, male shorthair cat was evaluated for possible nervous disease resulting from otitis interna. Under propofol and isoflurane anesthesia, this cat developed a third-degree AVB. Isoproterenol was administered by continuous infusion to increase its heart rate. During recovery, heart rate returned to sinus bradycardia together with first-degree AVB without medical treatment. The cause of transient AVB was not observed at the examination. Conclusion: The case of this cat suggests that anesthesia can result in a transient third-degree AVB.
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Affiliation(s)
- Hiroshi Sunahara
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu Nakaichi
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Toshie Iseri
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiro Horikirizono
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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33
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Itoh H, Tani K, Sunahara H, Nakaichi M, Iseri T, Horikirizono H, Itamoto K. Sphere-forming cells display stem cell-like characteristics and increased xCT expression in a canine hepatocellular carcinoma cell line. Res Vet Sci 2021; 139:25-31. [PMID: 34246940 DOI: 10.1016/j.rvsc.2021.06.013] [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: 09/25/2020] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common type of canine primary liver tumor; however, most chemotherapies against HCC are ineffective due to resistance to anticancer agents. Sphere-forming cells are considered to act as cancer stem cells for various types of solid tumors and have been established for many canine tumor cell lines, yet no studies have reported sphere-forming cells for canine HCC. In this study, we established sphere-forming cells from a canine HCC cell line (AZACH). These cells displayed increased stem cell marker mRNA expression (Nanog, Sox2, c-Myc, and Klf4), aldehyde dehydrogenase activity, and chemoresistance against mitoxantrone, gemcitabine, and doxorubicin. In addition, sphere-forming cells exhibited higher xCT expression and lower intracellular reactive oxygen species levels than adherent cells. Treatment with sulfasalazine, a xCT-specific inhibitor, reduced sphere formation efficiency. Together, these results indicate that sphere-forming cells derived from a canine HCC cell line have similar characteristics to cancer stem cells and that their increased xCT expression and associated resistance to oxidative stress contribute toward sphere formation.
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Affiliation(s)
- Harumichi Itoh
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Munekazu Nakaichi
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Toshie Iseri
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Hiro Horikirizono
- Laboratory of Veterinary Radiology Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8511, Japan
| | - Kazuhito Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan.
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34
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Tani K, Kanamori M, Nagase Y, Okura Y, Kawaminami S, Kawahito K, Inaba K, Inaba K, Miyatake A, Kondo K, Tabata R, Suzuki Y, Yamaguchi H. Past infections are associated with low levels of anti-citrullinated protein autoantibodies in rheumatoid arthritis. J Med Invest 2021; 67:182-188. [PMID: 32378604 DOI: 10.2152/jmi.67.182] [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] [Indexed: 11/14/2022]
Abstract
Background : Rheumatoid arthritis (RA), an autoimmune disease of unknown etiology, is believed to occur as the result of actions of genetic and environmental factors. In this study, we examined the relation of past histories about infectious diseases with the levels anti-citrullinated protein autoantibodies (ACPA) in RA. Methods : Results of a questionnaire about histories of infectious diseases were obtained from 85 patients with RA, and were analyzed. Results : Significantly lower level of ACPA was detected in patients with the history of tonsillitis, otitis media or urinary cystitis than in those without it. There was no difference in the level of ACPA in RA patients between with and without cold / influenza, rubella, chickenpox, herpes labialis or herpes zoster. When RA patients were divided into two groups, high-level and low-level ACPA, multiple logistic regression analysis revealed that the history of otitis media was a significantly independent factor for the low level of ACPA. There was no significant relation between the level of rheumatoid factor and histories of infectious diseases. Conclusion : This study clarified that the past history of otitis media is associated with the low level of ACPA in RA. J. Med. Invest. 67 : 182-188, February, 2020.
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Affiliation(s)
- Kenji Tani
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Minaho Kanamori
- Student Lab, The University of Tokushima Faculty of Medicine, Tokushima, Japan.,Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yutaro Nagase
- Student Lab, The University of Tokushima Faculty of Medicine, Tokushima, Japan.,Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yoshihiro Okura
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Shingo Kawaminami
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | | | | | - Kaori Inaba
- Yoshinogawa Medical Center, Tokushima, Japan.,Tokushima Prefectural Central Hospital, Tokushima, Japan
| | | | - Keisuke Kondo
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Ryo Tabata
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Yoshihiro Suzuki
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, Institute of Biomedical Sciences, The University of Tokushima Graduate School, Tokushima, Japan
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35
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Khoa ND, Phuong NL, Tani K, Inthavong K, Ito K. Computational fluid dynamics comparison of impaired breathing function in French bulldogs with nostril stenosis and an examination of the efficacy of rhinoplasty. Comput Biol Med 2021; 134:104398. [PMID: 33905990 DOI: 10.1016/j.compbiomed.2021.104398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Brachycephalic obstructive airway syndrome (BOAS) in dogs indicates a particular set of upper airway abnormalities found in brachycephalic dogs (e.g., French bulldogs). Stenotic nares is one of the primary BOAS-related abnormalities restricting the functional breathing of affected dogs. For severe stenosis, rhinoplasty is required to increase the accessibility of the external nostril to air; however, the specific improvement from surgery in terms of respiratory physiology and uptake of inhaled air has not been fully elucidated METHOD: This study employed Computational Fluid Dynamics (CFD) simulations to evaluate the effects of different stenotic intensities on airflow patterns in a total of eight French bulldog upper airways. A bulldog with severe stenosis after surgery was included to examine the efficacy of the surgical intervention. RESULTS The results showed homogeneous airflow distributions in healthy and mild stenosis cases and significantly accelerated airstreams at the constricted positions in moderate and severe stenosis bulldogs. The airflow resistance was over 20-fold greater in severe stenosis cases than the healthy cases. After surgery, a decrease in airflow velocity was observed in the surgical region, and the percentage of reduced airflow resistance was approximately 4%. CONCLUSIONS This study suggests impaired breathing function in brachycephalic dogs with moderate and severe stenosis. The results also serve as a reference for veterinarians in surgical planning and monitoring bulldogs' recuperation after surgery.
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Affiliation(s)
- Nguyen Dang Khoa
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan.
| | - Nguyen Lu Phuong
- Faculty of Environment, Ho Chi Minh City University of Natural Resources and Environment, 236 Le Van Sy, Ward 1, Tan Binh district, Ho Chi Minh City, Viet Nam
| | - Kenji Tani
- Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yda, Yamaguchi Cityoshi, Yamaguchi, 753-8511, Japan
| | - Kiao Inthavong
- School of Engineering, Mechanical & Automotive, RMIT University, GPO Box 2476, Melbourne, VIC, 3001, Australia
| | - Kazuhide Ito
- Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, Japan
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36
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Nakaichi M, Iseri T, Horikirizono H, Komine M, Itoh H, Sunahara H, Nemoto Y, Itamoto K, Tani K. Copper-associated hepatitis in a young Dalmatian dog in Japan. J Vet Med Sci 2021; 83:911-915. [PMID: 33840721 PMCID: PMC8267186 DOI: 10.1292/jvms.21-0061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
A male 25-month-old Dalmatian dog attended our veterinary hospital because of anorexia and high circulating liver enzyme activities. Abdominal computed
tomography showed a slightly small liver with rounded edges, and laparoscopic examination showed that the liver was yellowish. Histopathological examination
revealed multifocal necrosis of hepatocytes and severe chronic hepatitis. Rhodanine staining showed severe copper accumulation in hepatocytes and a quantitative
analysis of the copper content of the liver showed substantial accumulation (10.3 mg/g dry mass), suggesting a diagnosis of copper-associated hepatitis.
Previously reported canine mutation in the COMMD1, the gene responsible for the copper-associated hepatitis in the Bedlington terrier, was not
identified. To our knowledge, this is the first report of copper-associated hepatitis in a Dalmatian in Japan.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Misa Komine
- IDEXX Laboratories K.K., Koganei, Tokyo 184-8515, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
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37
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Nakaichi M, Iseri T, Horikirizono H, Sakai Y, Itoh H, Sunahara H, Itamoto K, Tani K. Clinical features and their course of pituitary carcinoma with distant metastasis in a dog. J Vet Med Sci 2020; 82:1671-1675. [PMID: 33028750 PMCID: PMC7719888 DOI: 10.1292/jvms.20-0500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
An 11-year-old male toy poodle with neurological symptoms was diagnosed with a macroscopic pituitary tumor, which produced adrenocorticotropic hormone. Radiation therapy with a linear accelerator was performed for the pituitary tumor, and resulted in good local tumor control. However, serum endogenous adrenocorticotropic hormone concentrations were uncontrollable even after the tumor disappeared. Abdominal computed tomography revealed splenic masses, and splenectomy was performed. Histopathological examination of the surgical specimen showed tumor cells with eosinophilic and finely granular cytoplasm suggestive of endocrine origin. Since these cells were positive for adrenocorticotropic hormone, the case was diagnosed as a pituitary carcinoma with distant metastasis. Necropsy revealed multiple metastases to the abdominal organs. This is the first case report describing canine pituitary carcinoma with distant metastasis.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Yusuke Sakai
- Department of Veterinary Pathology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi-shi, Yamaguchi 753-8515, Japan
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Itoh H, Nishikawa S, Tani K, Sunahara H, Nakaichi M, Iseri T, Taura Y, Itamoto K. Cystine transporter expression is a marker to identify a subpopulation of canine adipose-derived stem cells. J Vet Med Sci 2020; 82:713-720. [PMID: 32269196 PMCID: PMC7324832 DOI: 10.1292/jvms.19-0373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Adipose-derived stem cells (ADSCs) are promising cell sources for regenerative medicine
due to the simplicity of their harvest and culture; however, their biological properties
are not completely understood. Moreover, recent murine and human studies identified
several functional subpopulations of ADSCs varying in differentiation potential; however,
there is a lack of research on canine ADSCs. Cystine transporter (xCT) is a stem cell
marker in gastric and colon cancers that interacts with CD44 to enhance cystine uptake
from the cell surface and subsequently accelerates intercellular glutathione levels. In
this study, we identified a ~5% functional subpopulation of canine ADSCs with
xCT+ expression (xCTHi). Compared with those of the
xCT− subpopulation (xCTLo), the xCTHi subpopulation
showed a significantly higher proliferation rate, higher expression of conventional stem
cell markers (SOX2, KLF4, and c-Myc),
and higher expression of adipogenic markers (FABP4 and
PPARγ). By contrast, the xCTLo subpopulation showed
significantly higher expression of osteogenic markers (BMP1 and
SPP) than xCTHi cells. These results suggest xCT as a
candidate marker for detecting a functional subpopulation of canine ADSCs.
Mechanistically, xCT could increase the adipogenic potential while decreasing the
osteogenic differentiation potential, which could serve as a valuable target marker in
regenerative veterinary medicine.
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Affiliation(s)
- Harumichi Itoh
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Shimpei Nishikawa
- Department of Medical Data Science, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka 565-0871, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Yasuho Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
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Nakasumi K, Sunahara H, Igari K, Itoh H, Itamoto K, Yamamoto N, Ishikawa T, Takami T, Sakaida I, Taura Y, Tani K. Effect of transcatheter arterial embolisation in normal canine liver using trisacryl gelatine microspheres (Embosphere). Res Vet Sci 2020; 129:174-177. [PMID: 32036125 DOI: 10.1016/j.rvsc.2020.01.018] [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: 09/13/2019] [Revised: 01/19/2020] [Accepted: 01/22/2020] [Indexed: 10/25/2022]
Abstract
The effect of selective transcatheter arterial embolisation (TAE) using trisacryl gelatine microspheres (TGMs) in the normal canine liver was investigated. Selective embolisation was achieved by injecting TGMs into the left hepatic artery through a microcatheter in four healthy dogs. After embolisation, computed tomography (CT), biochemical analysis and histological examination were performed during a 12-week observation period. Embolisation was successful in all four dogs. Postoperative CT revealed consistent embolisation of the artery within the experimental period in three dogs. Hepatic enzyme levels slightly increased after embolisation but tapered to normal ranges. Histological examinations revealed no abnormal changes. Thus, selective TAE with TGMs was well tolerated in normal dogs and may be applicable to canine hepatocellular carcinoma.
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Affiliation(s)
- Ko Nakasumi
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Kazuaki Igari
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Harumichi Itoh
- Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Naoki Yamamoto
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Tsuyoshi Ishikawa
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Taro Takami
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Isao Sakaida
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Yasuho Taura
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
| | - Kenji Tani
- Departments of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 1677-1 Yoshida, Yamaguchi 753-8515, Japan.
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Yamaguchi H, Sato K, Kawahito K, Miyatake A, Kondo K, Inaba K, Inaba K, Kawaminami S, Tabata R, Yuasa S, Okura Y, Tuchiya A, Suzuki Y, Tani K. Japanese elderly individuals wish for enteral tube feeding more strongly for their parents than for themselves. J Med Invest 2019; 66:258-263. [PMID: 31656285 DOI: 10.2152/jmi.66.258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
[Introduction] The purpose of this study was to investigate the differences in the preference of enteral tube feeding between elderly inhabitants of Mugi town, Tokushima Prefecture, Japan, and their parents in various physical conditions. [Methods] This population-based questionnaire survey studied 300 randomly selected participants aged 65-80 years. Respondents were to consider a situation where eating was difficult, and were questioned on their desire for tube feeding, using a visual analogue scale (VAS) ranging from "do not want tube feeding (0)" to "want tube feeding (100)." [Results] Valid responses of 103 (34.4%) participants were analyzed. Under conditions of being "healthy," "bedridden," "with dementia," and "bedridden and with dementia," the median (IQR) of the VAS values for the desire for tube feeding were 31.8 (3.3 to 83.8), 19.3 (2.4 to 52.3), 5.2 (0.7 to 18.9), 4.0 (0.3 to 15.2) for respondents and 55.2 (11.6 to 92.2), 48.7 (5.5 to 85.5), 9.0 (1.2 to 46.8), 5.1 (0.1 to 36.5) for parents, respectively. The VAS values for the parents were significantly higher (p=0.001, 0.002, 0.001, and 0.01, respectively for the four conditions described) for the same items. [Conclusion] Surrogate decisions made by family members often differ from what the patients would have desired. J. Med. Invest. 66 : 258-263, August, 2019.
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Affiliation(s)
- Harutaka Yamaguchi
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Koj Sato
- Medical student, Tokushima University, Tokushima, Japan
| | | | | | | | - Keisuke Inaba
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kaori Inaba
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Shingo Kawaminami
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Ryo Tabata
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Shino Yuasa
- Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - Yoshihiro Okura
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Atsushi Tuchiya
- Department of Civil and Environmental Studies, Tokushima University Graduate School of Integrated Arts and Sciences, Tokushima, Japan
| | - Yoshihiro Suzuki
- Department of General Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Kenji Tani
- Department of General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
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Tani K, Mitomo S, Tanaka K, Tahara S, Nakamura S. P971Impact of treatment strategy on 1-year outcome for Left Main trifurcation lesions. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Limited data exist regarding procedural strategy and clinical outcomes after percutaneous coronary intervention (PCI) for unprotected left main (LM) trifurcation lesion.
Purpose
The aim of this study is to evaluate 1-year clinical outcomes after LM trifurcation PCI comparing different strategies in kissing balloon inflation (KBI).
Methods
From 1, January, 2011 to 31, March, 2017, patients who underwent LM trifurcation PCI with second generation drug-eluting stent in our center were retrospectively analyzed. They were categorized into single-stent KBT group (KBT in left anterior descending artery [LAD] and left circumflex artery [LCX], or LAD and high lateral branch [HL]) and no-KBT group. Primary endpoint is restenosis in the lesions.
Results
Among 1301 patients who underwent LM PCI during the study period, 163 patients (12.5%) had a trifurcation lesion. Regarding the number of stents used for the lesions, 1, 2 and 3 stents were used in 75.4%, 22.0% and 2.5%, respectively. Median follow-up period of LM trifurcation patients was 265 days (interquartile range: 81–564). In the no-KBT group (64 patients), 19 patients experienced restenosis of HL and LCX (HL: 8 patients, LCX: 0 patient, and both: 11 patients). In the KBT-group, KBT for LAD and LCX was performed in 47 patients, and of them, 19 patients experienced restenosis of LM-LAD, HL and LCX (HL: 12 patients, LCX: 6 patients and all: 1 patient). On the other hand, in 9 patients with KBT for LAD and HL, there were no restenosis cases at 1-year follow-up. There was no statistically significant difference in restenosis rate between the no-KBI and KBT group (29.6% vs. 40.4%, p=0.69).
Restenosis rates in each segments
Conclusion
After LM trifurcation PCI, restenosis rate at 1-year follow-up was high, and no difference between no-KBT and KBT group overall. However, there was no restenosis case in patients with KBT for LAD and HL.
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Affiliation(s)
- K Tani
- New-Tokyo Hospital, Chiba, Japan
| | - S Mitomo
- New-Tokyo Hospital, Chiba, Japan
| | - K Tanaka
- New-Tokyo Hospital, Chiba, Japan
| | - S Tahara
- New-Tokyo Hospital, Chiba, Japan
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Watanabe Y, Mitomo S, Naganuma T, Nakajima A, Tani K, Matsuoka S, Kawamoto H, Tanaka K, Sato T, Ishiguro H, Okutsu M, Tahara S, Kurita N, Nakamura SH, Nakamura S. P6530Clinical outcomes of dialysis patients treated with current generation DES for left main distal bifurcation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
We assessed clinical outcomes after percutaneous coronary intervention (PCI) for unprotected left main (ULM) using current generation drug eluting stents (cDES) in hemodialysis (HD) patients compared to general populations.
Methods
We identified 1269 consecutive patients who underwent PCI for ULM distal bifurcation lesions. Of them, 563 patients were treated with cDES (512 non HD and 51 HD patients). The primary endpoint was target lesion failure (TLF) at 3 years, defined as a composite of cardiac death, target lesion revascularization (TLR) and myocardial infarction (MI).
Results
HD group was more likely to have diabetes mellitus (70.0% vs. 45.8%, p=0.002), peripheral artery disease (56.0% vs. 14.9%, p<0.001), and lower ejection fraction (52.6% vs. 56.3%, p=0.026). The rate of TLF at 3 years was significantly higher in the HD group (adjusted Hazard ratio [HR] 2.59; 95% confidence interval [CI], 1.54–4.37; p<0.001). Cardiac mortality was significantly higher in the HD group (adjusted HR 4.49; 95% CI, 2.07–9.74; p<0.001). The rates of TLR for LM-left anterior descending artery (LAD) and left circumflex ostium (LCXos) were significantly higher in the HD group (LMT-LAD: adjusted HR 3.10; 95% CI, 1.31–7.33; p=0.01, LCXos: adjusted HR 2.56; 95% CI, 1.32–4.94; p=0.005). The rate of MI was similar between the 2 groups.
Conclusions
Hemodialysis was strongly associated with adverse events after PCI for ULM distal bifurcation lesions even with cDES.
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Affiliation(s)
| | - S Mitomo
- New Tokyo Hospital, Matsudo, Japan
| | | | | | - K Tani
- New Tokyo Hospital, Matsudo, Japan
| | | | | | - K Tanaka
- New Tokyo Hospital, Matsudo, Japan
| | - T Sato
- New Tokyo Hospital, Matsudo, Japan
| | | | - M Okutsu
- New Tokyo Hospital, Matsudo, Japan
| | - S Tahara
- New Tokyo Hospital, Matsudo, Japan
| | - N Kurita
- New Tokyo Hospital, Matsudo, Japan
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Oishi Y, Tani K, Itamoto K, Haraguchi T, Taura Y. Agenesis of hepatic lobes in a dog. Open Vet J 2019; 8:485-488. [PMID: 30775289 PMCID: PMC6356100 DOI: 10.4314/ovj.v8i4.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 11/30/2018] [Indexed: 11/17/2022] Open
Abstract
Agenesis of a hepatic lobe is an extremely rare congenital anomaly and only one dog have been reported in veterinary literature. We encountered a dog with this anomaly diagnosed by Computed tomography (CT) and portography. A two-year-old, 6.9-kg female Shih tzu dog was presented with vomiting and anorexia. The dog had no history of abdominal surgery or trauma. Biochemical analysis showed elevated plasmatic liver enzymes. CT revealed the absence of the liver parenchyma and vascular system of the left lobe, quadrate lobe and papillary process of the caudate lobe. A portosystemic shunt was also observed. The liver parenchyma and vascular system of these lobes were not detected under digital subtraction angiography during laparotomy. Furthermore, the liver parenchyma and vascular system of these lobes were not detected even when the remaining liver volume increased two months after treating the shunt vessel. CT proved itself a good option for antemortally diagnosis of hepatic agenesis in a dog.
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Affiliation(s)
- Yasuhisa Oishi
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan
| | - Kazuhito Itamoto
- Department of Animal Medical Center, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan
| | - Tomoya Haraguchi
- Department of Animal Medical Center, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan
| | - Yasuho Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan
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Tani K, Kawaminami S, Okura Y, Tabata R, Yuasa S, Nakanishi Y, Kawahito K, Inaba K, Inaba K, Kondo K, Umetani K, Miyatake A, Suzuki Y, Yamaguchi H. Predictive factors associated with the therapeutic response in patients with polymyalgia rheumatica and remitting seronegative symmetrical synovitis with pitting edema syndrome. J Med Invest 2019; 66:112-118. [DOI: 10.2152/jmi.66.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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)
- Kenji Tani
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Shingo Kawaminami
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | - Yoshihiro Okura
- General Medicine and Primary Care, Tokushima University Hospital, Tokushima, Japan
| | - Ryo Tabata
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | - Shino Yuasa
- Tokushima Prefectural Central Hospital, Tokushima,Japan
| | - Yoshinori Nakanishi
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | | | - Keisuke Inaba
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | - Kaori Inaba
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | | | | | | | - Yoshihiro Suzuki
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
| | - Harutaka Yamaguchi
- Department of General Medicine, Institute ofBiomedical Sciences, the University of Tokushima Graduate School, Tokushima, Japan
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Kano R, Sakai M, Hiyama M, Tani K. Isolation of Aspergillus caninus (Synonym: Phialosimplex caninus) from a Canine Iliac Lymph node. Mycopathologia 2019; 184:335-339. [DOI: 10.1007/s11046-018-0312-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 12/03/2018] [Indexed: 10/27/2022]
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46
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Nishimura T, Takami T, Sasaki R, Aibe Y, Matsuda T, Fujisawa K, Matsumoto T, Yamamoto N, Tani K, Taura Y, Sakaida I. Liver regeneration therapy through the hepatic artery-infusion of cultured bone marrow cells in a canine liver fibrosis model. PLoS One 2019; 14:e0210588. [PMID: 30673721 PMCID: PMC6343920 DOI: 10.1371/journal.pone.0210588] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 12/25/2018] [Indexed: 01/02/2023] Open
Abstract
Background We previously reported regenerative therapies for decompensated cirrhosis based on peripheral venous drip infusion using non-cultured whole bone marrow (BM) cells, or the less invasive cultured BM-derived mesenchymal stem cells (BMSCs). Here, we assessed the efficacy and safety of hepatic arterial infusion using cultured autologous BMSCs, comparing it with peripheral infusion, using our established canine liver fibrosis model. Methods Canine BM cells were harvested and cultured, and the resultant BMSCs were returned to carbon tetrachloride (CCl4)-induced liver cirrhosis model canines via either a peripheral vein (Vein group) or hepatic artery (Artery group). A variety of assays were performed before and 4, 8, and 12 weeks after BMSC infusion, and liver fibrosis and indocyanine green (ICG) half-life (t1/2) were compared to those in a control group that received CCl4 but not BMSCs. The safety of this approach was evaluated by contrast-enhanced computed tomography (CT) and serial blood examinations after infusion. Results Four weeks after infusing BMSCs, a significant improvement was observed in the Vein group (n = 8) compared to outcome in the Control group (n = 10), along with a decrease in ICG t1/2. In the Artery group (n = 4), ICG t1/2 was significantly shorter than that in the Vein group at 8 weeks (Δt1/2: −3.8 ± 1.7 min vs. +0.4 ± 2.4 min; p < 0.01) and 12 weeks (Δt1/2: −4.2 ± 1.7 min vs. +0.4 ± 2.7 min; p < 0.01) after BMSC administration. Post-infusion contrast-enhanced CT showed no liver infarction, and blood tests showed no elevations in either serum lactate dehydrogenase concentrations or hypercoagulability. Conclusions We confirmed the efficacy and safety of the hepatic arterial infusion of cultured autologous BMSCs using a canine model, thereby providing non-clinical proof-of-concept.
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Affiliation(s)
- Tatsuro Nishimura
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Taro Takami
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
- Center for Regenerative and Cell Therapy, Yamaguchi University Organization for Research Initiatives, Ube, Yamaguchi, Japan
- * E-mail:
| | - Ryo Sasaki
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Yuki Aibe
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Takashi Matsuda
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Koichi Fujisawa
- Center for Reparative Medicine, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Toshihiko Matsumoto
- Department of Oncology and Laboratory Medicine, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Naoki Yamamoto
- Yamaguchi University Health Administration Center, Yamaguchi, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi, Yamaguchi, Japan
| | - Yasuho Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi, Yamaguchi, Japan
| | - Isao Sakaida
- Department of Gastroenterology & Hepatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
- Center for Regenerative and Cell Therapy, Yamaguchi University Organization for Research Initiatives, Ube, Yamaguchi, Japan
- Center for Reparative Medicine, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
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Oishi Y, Tani K, Taura Y. Transcatheter arterial embolisation in four dogs with hepatocellular carcinoma. J Small Anim Pract 2018; 60:761-766. [PMID: 30298574 DOI: 10.1111/jsap.12944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 01/07/2018] [Accepted: 06/26/2018] [Indexed: 01/02/2023]
Abstract
Four dogs with hepatocellular carcinoma were treated by transcatheter arterial embolisation. In all dogs, the tumour-supplying arteries were selectively embolised with gelatine sponge particles. Post-embolisation tumour volumes decreased relative to pre-embolisation volumes in all dogs. No adverse reactions were observed in three dogs after treatment but one dog showed pancreatitis. These results suggest that transcatheter arterial embolisation is a feasible treatment for dogs with hepatocellular carcinoma.
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Affiliation(s)
- Y Oishi
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
| | - K Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
| | - Y Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, 753-8511, Japan
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Tani K, Houchi H, Kosaka S, Kaji M, Tsuji S, Higuchi K, Isobe Y, Honda Y, Kouzai M, Yamashita S. P3.07-14 Collaborations of Pharmacists with Lung Cancer Treatment by Prepared Patients Controlled Analgesia (PCA) for Perioperative Pain Control. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Obata F, Tani K, Yamaguchi H, Tabata R, Bando H, Imoto I. Comparison of the efficacy and safety of 10-mg empagliflozin every day versus every other day in Japanese patients with Type 2 Diabetes Mellitus: a pilot trial. J Med Invest 2017; 64:50-57. [PMID: 28373628 DOI: 10.2152/jmi.64.50] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The terminal elimination half-life (t1/2) of empagliflozin is 13.1 hours. Accordingly, we hypothesized that the administration of empagliflozin every other day might improve glycemic control in patients with type 2 diabetes mellitus, not being inferior to the therapy every day. We investigated the clinical effects and safety of the addition of empagliflozin every day or every other day to type 2 diabetic patients with a poor control in glycemia. Thirteen Japanese patients diagnosed as type 2 diabetes mellitus recruited to this study. Subjects were divided into two groups; one was treatment with 10 mg of empagliflozin every day (Group A), the other was 10 mg of empagliflozin every other day (Group B). The comparable study of multiple clinical indexes between the 2 groups was made before and 8, 16, and 24 weeks after the treatment. After the treatment for 24 weeks, the HbA1c level was decreased both in group A (from 7.5%±1.1% to 6.5%±0.8%) and in group B (from 7.6%±0.8% to 7.2%±0.5%). This pilot trial suggested the possibility of 10-mg every other day administration with empagliflozin for Japanese patients with type 2 diabetes mellitus. J. Med. Invest. 64: 50-57, February, 2017.
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50
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Hwang CC, Igase M, Sakurai M, Haraguchi T, Tani K, Itamoto K, Shimokawa T, Nakaichi M, Nemoto Y, Noguchi S, Coffey M, Okuda M, Mizuno T. Oncolytic reovirus therapy: Pilot study in dogs with spontaneously occurring tumours. Vet Comp Oncol 2017; 16:229-238. [PMID: 29076241 DOI: 10.1111/vco.12361] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/17/2017] [Accepted: 09/18/2017] [Indexed: 12/26/2022]
Abstract
Oncolytic virotherapy is a novel treatment involving replication-competent virus in the elimination of cancer. We have previously reported the oncolytic effects of reovirus in various canine cancer cell lines. This study aims to establish the safety profile of reovirus in dogs with spontaneously occurring tumours and to determine a recommended dosing regimen. Nineteen dogs with various tumours, mostly of advanced stages, were treated with reovirus, ranging from 1.0 × 108 to 5.0 × 109 TCID50 given as intratumour injection (IT) or intravenous infusion (IV) daily for up to 5 consecutive days in 1 or multiple treatment cycles. Adverse events (AEs) were graded according to the Veterinary Cooperative Oncology Group- Common Terminology Criteria for Adverse Events (VCOG-CTCAE) v1.1 guidelines. Viral shedding, neutralizing anti-reovirus antibody (NARA) production and immunohistochemical (IHC) detection of reovirus protein in the tumours were also assessed. AE was not observed in most dogs and events were limited to Grade I or II fever, vomiting, diarrhoea and inflammation of the injected tumour. No infectious virus was shed and all dogs had elevated NARA levels post-treatment. Although IHC results were only available in 6 dogs, 4 were detected positive for reovirus protein. In conclusion, reovirus is well-tolerated and can be given safely to tumour-bearing dogs according to the dosing regimen used in this study without significant concerns of viral shedding. Reovirus is also potentially effective in various types of canine tumours.
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Affiliation(s)
- C C Hwang
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - M Igase
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - M Sakurai
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - T Haraguchi
- Laboratory of Small Animal Clinical Science (Surgical Division), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - K Tani
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - K Itamoto
- Laboratory of Small Animal Clinical Science (Surgical Division), Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - T Shimokawa
- Laboratory of Veterinary Internal Medicine, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - M Nakaichi
- Laboratory of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Y Nemoto
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - S Noguchi
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - M Coffey
- Oncolytics Biotech Inc, Calgary, Canada
| | - M Okuda
- Laboratory of Veterinary Internal Medicine, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan.,Biomedical Science Center for Translational Research, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - T Mizuno
- Laboratory of Molecular Diagnostics and Therapeutics, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.,Biomedical Science Center for Translational Research, The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
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