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Mori KI, Yamada T, Sato Y, Nagatsu K, Kikunaga H. α(PS)-γ(Ge) digital anti-coincidence spectroscopy and its application to activity measurement of 225Ac. Appl Radiat Isot 2023; 202:111061. [PMID: 37793241 DOI: 10.1016/j.apradiso.2023.111061] [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: 05/31/2023] [Revised: 09/04/2023] [Accepted: 09/28/2023] [Indexed: 10/06/2023]
Abstract
Activity of 225Ac was measured by the digital anti-coincidence spectroscopy technique using a 4πα-γ detector configuration, composed of a sandwich type 4π plastic scintillator and Ge detectors. Ultrathin plastic scintillators were used for selective detection of α-particles emitted from 225Ac and its progenies, and the α-counting efficiencies of a 4π plastic scintillation detector for individual nuclides in the decay chain were determined as well. A list-mode multichannel analyzer was employed to record coincidence/anti-coincidence events for off-line analyses. The time difference distribution spectra revealed α-particle emission following 213Po decay without β-particle interference from 213Bi.
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Affiliation(s)
- Ken-Ichi Mori
- Sector of Nuclear Science Research, Japan Atomic Energy Agency, Japan
| | | | - Yasushi Sato
- Research Institute for Measurement and Analytical Instrumentation, National Metrology Institute of Japan, Japan
| | - Kotaro Nagatsu
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, Japan
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Kuroki M, Iinuma R, Okuda H, Terazawa K, Shibata H, Mori KI, Ohashi T, Makiyama A, Futamura M, Miyazaki T, Horikawa Y, Ogawa T. Comprehensive Genome profile testing in head and neck cancer. Auris Nasus Larynx 2023; 50:952-959. [PMID: 37164815 DOI: 10.1016/j.anl.2023.04.006] [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: 10/01/2022] [Revised: 03/24/2023] [Accepted: 04/17/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVE Head and neck cancer (HNC) is a tumor occurring in various primary sites with limited chemotherapy options for its treatment. Recently, comprehensive genomic profiling (CGP) testing has become clinically widespread. In this study, we examined the utility of CGP in diagnosing and treating HNC. METHODS This study included 29 patients with HNC who underwent CGP testing at the Gifu University Hospital between December 2019 and April 2022. We analyzed the types of gene mutations and tumor mutational burden (TMB) based on the CGP results. Squamous cell carcinoma accounted for 55.2%, and other cancers accounted for 44.8%. And we investigated the correlation of prognosis with gene mutations and TMB. RESULTS Gene mutations were detected in TP53(48.3%), CDKN2A (27.6%), CDKN2B (17.2%), NOTCH1 (17.2%), PIK3CA (17.2%), ARID1A (13.8%), and NF1 (13.8%). TP53, CDKN2A and CDKN2B mutations significantly decreased survival rate in HNC. Five cases (17.2%) were TMB-high and 82.8% were TMB-low. In SCC cases treated with immune checkpoint inhibitors, TMB-high had better Overall survival than TMB-low. And all patients with TMB-high were oropharyngeal cancer. CONCLUSION Although there were no cases in which effective treatment was actually performed based on the results of CGP, many gene mutations have been detected and several gene mutations correlated with prognosis. Furthermore, TMB can be used as a biomarker to predict the therapeutic effects of immune checkpoint inhibitors in cases of SCC.
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Affiliation(s)
- Masashi Kuroki
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Ryota Iinuma
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Hiroshi Okuda
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Kosuke Terazawa
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Hirofumi Shibata
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Ken-Ichi Mori
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Toshimitsu Ohashi
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Akitaka Makiyama
- Department of Cancer Center, Gifu University Hospital, Gifu City, Japan
| | - Manabu Futamura
- Department of Cancer Center, Gifu University Hospital, Gifu City, Japan
| | | | - Yukio Horikawa
- Department of Cancer Center, Gifu University Hospital, Gifu City, Japan; Department of Clinical Genetics Center, Gifu University Hospital, Gifu City, Japan; Department of Diabetes, Endocrinology and Metabolism, Gifu University Graduate School of Medicine, Gifu City, Japan
| | - Takenori Ogawa
- Department of Otolaryngology-Head and Neck Surgery, Gifu University Graduate School of Medicine, Gifu City, Japan; Department of Cancer Center, Gifu University Hospital, Gifu City, Japan; Department of Clinical Genetics Center, Gifu University Hospital, Gifu City, Japan.
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Matsuoka H, Tanaka M, Yamaguchi T, Miyazato M, Kihara T, Nakagawa M, Mori KI, Kamimura T. The long-term prognosis of nephropathy in operated reflux. J Pediatr Urol 2019; 15:605.e1-605.e8. [PMID: 31570232 DOI: 10.1016/j.jpurol.2019.08.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 08/20/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the postoperative long-term prognosis and the factors predicting the renal function of patients with reflux nephropathy. As the serum creatinine (s-Cr) level tends to increase during infancy, the degree of reflux and renal parenchymal damage are thought to be more important factors in pediatric patients than in older patients. MATERIALS AND METHODS This study examined s-Cr, urinary protein, and blood pressure of patients who underwent anti-reflux surgery 10 years before. It also calculated the postoperative estimated glomerular filtration rate (eGFR) and examined the correlation between the eGFR and preoperative factors (age, gender, number of urinary tract infections [UTIs], primary diagnosis, reflux grade, percentage of dimercaptosuccinic acid uptake, degree of renal parenchymal damage, s-Cr abnormality, proteinuria, and hypertension), and analyzed the factors associated with the long-term prognosis. RESULTS The study population was 51 infants (37 boys and 14 girls). The mean age of the patients before surgery and at the follow-up examination was 3.41 ± 3.61 and 14.63 ± 3.74 years, respectively. After surgery, the s-Cr, urinary protein, and blood pressure values showed (44.7%, 26.7%, and 18.2%, respectively) were abnormal. The postoperative eGFR was a mean 90.27 ± 20.42 ml/min/1.73 m2 and primary correlated with an older age (P = 0.0361), no UTI at the primary diagnosis (P = 0.0044), reflux grade ≥8 (P = 0.0180), degree of renal parenchymal damage (group ≥2b, P < 0.0001), s-Cr abnormality (P < 0.0001), and proteinuria (P = 0.0001) at baseline. A total of 20 patients had chronic kidney disease (CKD; Fig. 1). The multiple regression analysis of these factors revealed that an older age (P = 0.0021), reflux grade ≥8 (P = 0.0134), and degree of renal parenchymal damage (group ≥2b, P < 0.0001) were significantly associated with the long-term postoperative prognosis of reflux nephropathy. Using these three factors, this study derived a multiple regression equation estimating eGFR in the 10th year after surgery (Fig. 1). DISCUSSION In this study, severe vesico-ureteral reflux (reflux grade ≥8) and severe renal parenchymal damage (group ≥2b) were associated with a long-term decrease in the eGFR. In particular, renal parenchymal damage was closely correlated with the postoperative eGFR; thus, this was clearly a critical factor. The age at surgery showed a better correlation with the postoperative eGFR in the multiple regression analysis; thus, age was regarded as an independent prognostic factor. CONCLUSIONS The age, reflux grade, and degree of renal parenchymal damage at baseline were factors that affected the long-term postoperative prognosis of reflux nephropathy. Patients with high-grade reflux and severe renal parenchymal damage were more likely to show a reduced CKD level at 10 years after anti-reflux surgery.
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Affiliation(s)
- Hirofumi Matsuoka
- Department of Urology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
| | - Masatoshi Tanaka
- Department of Urology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | | | - Minoru Miyazato
- Department of Urology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Toshiharu Kihara
- Department of Urology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Masayuki Nakagawa
- Department of Urology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Ken-Ichi Mori
- Department of Urology, Faculty of Medicine, Oita University, Oita, Japan
| | - Toshio Kamimura
- Department of Urology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Nomura T, Takei K, Abe S, Fukuda Y, Yamanaka N, Sejiyama S, Yamasaki M, Shibuya T, Ando T, Mori KI, Sumino Y, Sato F, Mimata H. Patient-reported postoperative pain, body image, and cosmetic satisfaction after transumbilical laparoendoscopic single-site adrenalectomy. Asian J Endosc Surg 2017; 10:289-294. [PMID: 28145058 DOI: 10.1111/ases.12361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/06/2016] [Accepted: 12/27/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Laparoendoscopic single-site surgery is a recently innovated urologic surgical procedure. Transumbilical laparoendoscopic single-site adrenalectomy (LESS-A) is technically safe and feasible in patients with benign adrenal tumors. To improve patient counseling and informed consent, we evaluated patient-reported postoperative pain, body image, and cosmetic satisfaction after transumbilical LESS-A. METHODS We reviewed 24 patients who underwent transumbilical LESS-A and assessed their operative and esthetic outcomes and incisional pain. Incisional pain was evaluated using a 10-point visual analog scale, and the body image and cosmetic satisfaction were measured using a questionnaire that included a body image scale (range, 5-20 points) and a cosmetic scale (range, 3-24 points). RESULTS Pure LESS-A was performed on 10 patients using a multichannel port; an additional 5-mm trocar was used in two obese patients. Supplementary to the single-incision approach, one or two 3-mm ports were used in 12 patients. The mean operative time was 203 min; the mean blood loss was 41 mL. The mean pain visual analog scale scores on postoperative days 1, 3, and 7 were 3.5, 2.2 (P = 0.012), and 1.5 points (P = 0.018), respectively. The mean body image scale and cosmetic scale scores indicating wound satisfaction 1 month after the surgery were 20 and 22 points, respectively. Although one patient had liver injury during surgery, the postoperative course during the 3-month follow-up was uneventful. CONCLUSION Transumbilical LESS-A confers less postoperative pain and better cosmetic satisfaction than conventional laparoscopic adrenalectomy. Therefore, this procedure could potentially become a standard treatment option for benign adrenal tumors.
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Affiliation(s)
- Takeo Nomura
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Kohei Takei
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Satoki Abe
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Yuko Fukuda
- Department of Urology, Koseiren Tsurumi Hospital, Beppu, Japan
| | - Naoyuki Yamanaka
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Shinya Sejiyama
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Mutsushi Yamasaki
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Tadamasa Shibuya
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Tadasuke Ando
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Ken-Ichi Mori
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Yasuhiro Sumino
- Department of Urology, Koseiren Tsurumi Hospital, Beppu, Japan
| | - Fuminori Sato
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
| | - Hiromitsu Mimata
- Department of Urology, Oita University Faculty of Medicine, Yufu, Japan
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Suzuki S, Mori KI, Higashino A, Iwasaki Y, Yasutomi Y, Maki N, Akari H. Persistent replication of a hepatitis C virus genotype 1b-based chimeric clone carrying E1, E2 and p6 regions from GB virus B in a New World monkey. Microbiol Immunol 2016; 60:26-34. [PMID: 26634303 DOI: 10.1111/1348-0421.12349] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 11/26/2015] [Accepted: 11/30/2015] [Indexed: 12/22/2022]
Abstract
The development of effective hepatitis C virus (HCV) vaccines is essential for the prevention of further HCV dissemination, especially in developing countries. Therefore the aim of this study is to establish a feasible and immunocompetent surrogate animal model of HCV infection that will help in evaluation of the protective efficacy of newly developing HCV vaccine candidates. To circumvent the narrow host range of HCV, an HCV genotype 1b-based chimeric clone carrying E1, E2 and p6 regions from GB virus B (GBV-B), which is closely related to HCV, was generated. The chimera between HCV and GBV-B, named HCV/G, replicated more efficiently as compared with the HCV clone in primary marmoset hepatocytes. Furthermore, it was found that the chimera persistently replicated in a tamarin for more than 2 years after intrahepatic inoculation of the chimeric RNA. Although relatively low (<200 copies/mL), the viral RNA loads in plasma were detectable intermittently during the observation period. Of note, the chimeric RNA was found in the pellet fraction obtained by ultracentrifugation of the plasma at 73 weeks, indicating production of the chimeric virus. Our results will help establish a novel non-human primate model for HCV infection on the basis of the HCV/G chimera in the major framework of the HCV genome.
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Affiliation(s)
- Saori Suzuki
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi 484-8506
| | - Ken-Ichi Mori
- Advanced Life Science Institute, 2-10-23 Maruyamadai, Wako, Saitama 351-0112
| | - Atsunori Higashino
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi 484-8506
| | - Yuki Iwasaki
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi 484-8506
| | - Yasuhiro Yasutomi
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Health and Nutrition, 1-1 Hachimandai, Tsukuba, Ibaraki 305-0843
| | - Noboru Maki
- Advanced Life Science Institute, 2-10-23 Maruyamadai, Wako, Saitama 351-0112
| | - Hirofumi Akari
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi 484-8506.,Laboratory of Evolutional Virology, Institute for Virus Research, Kyoto University, 53 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
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Mori KI, Matsumoto A, Maki N, Ichikawa Y, Tanaka E, Yagi S. Production of infectious HCV genotype 1b virus in cell culture using a novel Set of adaptive mutations. BMC Microbiol 2016; 16:224. [PMID: 27678340 PMCID: PMC5039931 DOI: 10.1186/s12866-016-0846-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/22/2016] [Indexed: 01/05/2023] Open
Abstract
Background Despite the high prevalence of genotype 1b hepatitis C virus (HCV) among patients, a cell culture system that permits entire viral life cycle of genotype 1b isolates is limited. To develop a cell-cultured hepatitis C virus (HCVcc) of genotype 1b, the proper combination of HCV genomic variants and host cells is essential. HCV genomes isolated from patients with distinctive symptoms may provide the variants required to establish an HCVcc of genotype 1b. Results We first established subgenomic replicons in Huh7 cells using HCV cDNAs isolated from two patients: one with fulminant hepatitis after liver transplantation (TPF1) and another with acute hepatitis and moderate symptoms (sAH). Replicons established from TPF1 and sAH showed mutations in NS4B and in NS3 and NS5A, respectively. Using these replication machineries, we constructed HCV genomic RNAs for each isolate. Virus infectivity was evaluated by a focus-forming assay, which is dependent on the intracellular expression of core antigen, and production of virus particles was assessed by density-gradient centrifugation. Infectious virus was only observed in the culture medium of cells transfected with TFP1 HCV RNA. A chimeric genome with the structural segment (5′-untranslated region [UTR] through NS2) from sAH and the replication machinery (NS3 through 3′-UTR) from TPF1 exhibited greater infectivity than did TFP1, despite formation of deficient virus particles in sAH, suggesting that this genomic segment potentiates virus particle formation. To identify the responsible variants, infectious virus formation was assessed in a chimeric genome carrying parts of the sAH structural segment of the TPF1 genome. A variant in NS2 (M170T) was identified that enhanced infectious virus formation. HCVcc carrying an NS2 gene encoding the M170T substitution and adaptive mutations in NS4B (referred to as TPF1-M170T) infected naïve cured Huh7 cells in a CD81-dependent manner. Conclusions We established a novel HCVcc of genotype 1b in Huh7 cells by introducing an amino acid variant in NS2 and adaptive mutations in NS4B from HCV genomic RNA isolated from a patient with fulminant HCV after liver transplantation. Electronic supplementary material The online version of this article (doi:10.1186/s12866-016-0846-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ken-Ichi Mori
- R&D Department, Advanced Life Science Institute, Inc., 2-10-23 Maruyamadai, Wako, Saitama, 351-0112, Japan
| | - Akihiro Matsumoto
- Department of Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Noboru Maki
- R&D Department, Advanced Life Science Institute, Inc., 2-10-23 Maruyamadai, Wako, Saitama, 351-0112, Japan
| | - Yuki Ichikawa
- Department of Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Eiji Tanaka
- Department of Medicine, Division of Hepatology and Gastroenterology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Shintaro Yagi
- R&D Department, Advanced Life Science Institute, Inc., 2-10-23 Maruyamadai, Wako, Saitama, 351-0112, Japan.
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Kitamura A, Kondoh T, Noguchi M, Hatada T, Tohbu S, Mori KI, Matsuo M, Kunitsugu I, Kanetake H, Moriuchi H. Assessment of lower urinary tract function in children with Down syndrome. Pediatr Int 2014; 56:902-908. [PMID: 24758352 PMCID: PMC4311436 DOI: 10.1111/ped.12367] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 01/23/2014] [Accepted: 04/17/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Despite the fact that functional lower urinary tract symptoms are common among people with Down syndrome (DS), their voiding function has not been studied precisely. Our goal was to assess the lower urinary tract functions in DS. METHODS Fifty-five DS children aged 5-15 years old and 35 age-matched control children were evaluated by ultrasonography and uroflowmetry. RESULTS Eleven (20%) DS children had no uresiesthesia, 21 (38%) were urinated under guidance, nine (16%) urinated fewer than three times a day, two (4%) urinated more than 10 times a day, three (5%) used diapers, and 26 (47%) had urinary incontinence. Seven (13%), 15 (27%), and 10 (18%) DS children had weak, prolonged and intermittent urination, respectively, and seven (13%) had urination with straining. In contrast, none of the control subjects had urinary problems. In the uroflowmetrical analysis, 10 (18%), 20 (37%), 11 (20%) and five (9%) DS children showed "bell-shaped," "plateau," "staccato" and "interrupted" patterns, respectively; the remaining nine (16%) could not be analyzed. In contrast, 21 (60%), one (3%), four (11%), three (9%) and two (6%) control subjects showed bell-shaped, tower-shaped, plateau, staccato and interrupted patterns, respectively; the remaining four (11%) could not be analyzed. Residual urine was demonstrated in four (7%) DS children and one (3%) control child. CONCLUSIONS Lower urinary tract symptoms and abnormal uroflowmetry findings, which can lead to further progressive renal and urinary disorders, are common in DS children. Therefore, lower urinary tract functions should be assessed at the life-long regular medical check-ups for subjects with DS.
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Affiliation(s)
- Atsuko Kitamura
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Misakaenosono Mutsumi Institute for Persons with Severe Intellectual/Motor Disabilities, Isahaya, Japan
| | - Mitsuru Noguchi
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Teppei Hatada
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Shohei Tohbu
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Ken-Ichi Mori
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Manabu Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Ichiro Kunitsugu
- Department of Public Health, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroshi Kanetake
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
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Tobu S, Noguchi M, Hatada T, Mori KI, Matsuo M, Sakai H. Expression of Angiotensin II Type 1 Receptor in Rat Bladder Smooth Muscle Cells in Response to a Streptzotocin Induced Diabetes Mellitus Model. Curr Urol 2012; 6:62-6. [PMID: 24917715 DOI: 10.1159/000343510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 03/06/2012] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION The aim of this study was to investigate angiotensin II type 1 (AT1) receptors in rat bladder smooth muscle cells and alterations of AT1 receptors by diabetes mellitus and diuretic states. MATERIALS AND METHODS Diabetes and diuresis were induced in adult female rats by a single intraperitoneal injection of streptozotocin and feeding 5% sucrose in water. Cystometry was performed on control, diuretic, and diabetic rats at 2 and 8 weeks after treatment. Immunohistochemical staining was used to detect expression of AT1 receptors in the bladder smooth muscle cell membrane. RESULTS AND CONCLUSIONS In diabetic rats, expression of AT1 receptors in the bladder smooth muscle cell membrane increased at 2 weeks and further increased at 8 weeks. The local renin-angiotensin system in the rat bladder might be activated by the continuous hyperglycemia caused by intraperitoneal injection of streptozotocin administration.
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Affiliation(s)
- Shohei Tobu
- Division of Nephro-Urology, Department of Translational Medical Sciences Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mitsuru Noguchi
- Department of Urology, Saga University Faculty of Medicine, Saga, Japan
| | - Teppei Hatada
- Division of Nephro-Urology, Department of Translational Medical Sciences Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ken-Ichi Mori
- Division of Nephro-Urology, Department of Translational Medical Sciences Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Manabu Matsuo
- Division of Nephro-Urology, Department of Translational Medical Sciences Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideki Sakai
- Division of Nephro-Urology, Department of Translational Medical Sciences Course of Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Mori KI, Noguchi M, Sumino Y, Sato F, Mimata H. Use of procalcitonin in patients on chronic hemodialysis: procalcitonin is not related with increased serum calcitonin. ISRN Urol 2012; 2012:431859. [PMID: 22685675 PMCID: PMC3363985 DOI: 10.5402/2012/431859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Accepted: 03/18/2012] [Indexed: 11/30/2022]
Abstract
Objectives. To investigate whether procalcitonin (PCT) could be useful for detecting bacterial infections in patients on hemodialysis (HD) and with increased calcitonin (CT). Methods. This prospective study included 42 males and 34 females on HD. The infection group consisted of 15 patients with proven bacterial infections; the other 61 patients were designated as the noninfection group. Serum C-reactive protein (CRP), interleukin (IL)-6, white blood cell (WBC) count, immature and total neutrophil (I/T) ratio, and CT were measured at the beginning of HD, and serum PCT levels at the beginning of HD and after HD. Results. The mean CT level in the both groups was apparently higher than that of nonchronic kidney disease. Significantly higher values between the infection and noninfection groups were seen for CRP, IL-6, WBC, I/T ratio, PCT, and CT. The PCT value of the area under the receiver operating characteristic curve was 0.921, which was significantly higher than the values for CRP (0.853; P < 0.01), IL-6 (0.739; P < 0.01), WBC (0.692; P < 0.01), and I/T ratio (0.584; P < 0.01). Conclusions. PCT was useful marker of bacterial infection in patients on HD and with increased CT. PCT levels should be determined before HD.
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Affiliation(s)
- Ken-Ichi Mori
- Department of Urology, Faculty of Medicine, Oita University, Idaigaoka 1-1, Hasama-cho, Yufu City 879-5593, Oita, Japan
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Iwasaki Y, Mori KI, Ishii K, Maki N, Iijima S, Yoshida T, Okabayashi S, Katakai Y, Lee YJ, Saito A, Fukai H, Kimura N, Ageyama N, Yoshizaki S, Suzuki T, Yasutomi Y, Miyamura T, Kannagi M, Akari H. Long-Term Persistent GBV-B Infection and Development of a Chronic and Progressive Hepatitis C-Like Disease in Marmosets. Front Microbiol 2011; 2:240. [PMID: 22319510 PMCID: PMC3267178 DOI: 10.3389/fmicb.2011.00240] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 11/15/2011] [Indexed: 12/14/2022] Open
Abstract
It has been shown that infection of GB virus B (GBV-B), which is closely related to hepatitis C virus, develops acute self-resolving hepatitis in tamarins. In this study we sought to examine longitudinally the dynamics of viral and immunological status following GBV-B infection of marmosets and tamarins. Surprisingly, two of four marmosets but not tamarins experimentally challenged with GBV-B developed long-term chronic infection with fluctuated viremia, recurrent increase of alanine aminotransferase and plateaued titers of the antiviral antibodies, which was comparable to chronic hepatitis C in humans. Moreover, one of the chronically infected marmosets developed an acute exacerbation of chronic hepatitis as revealed by biochemical, histological, and immunopathological analyses. Of note, periodical analyses of the viral genomes in these marmosets indicated frequent and selective non-synonymous mutations, suggesting efficient evasion of the virus from antiviral immune pressure. These results demonstrated for the first time that GBV-B could induce chronic hepatitis C-like disease in marmosets and that the outcome of the viral infection and disease progression may depend on the differences between species and individuals.
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Affiliation(s)
- Yuki Iwasaki
- Tsukuba Primate Research Center, National Institute of Biomedical Innovation Tsukuba, Japan
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Ishii K, Iijima S, Kimura N, Lee YJ, Ageyama N, Yagi S, Yamaguchi K, Maki N, Mori KI, Yoshizaki S, Machida S, Suzuki T, Iwata N, Sata T, Terao K, Miyamura T, Akari H. GBV-B as a pleiotropic virus: distribution of GBV-B in extrahepatic tissues in vivo. Microbes Infect 2007; 9:515-21. [PMID: 17349810 DOI: 10.1016/j.micinf.2007.01.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 01/15/2007] [Accepted: 01/16/2007] [Indexed: 11/25/2022]
Abstract
GB virus B (GBV-B) infection of New World monkeys is considered to be a useful surrogate model for hepatitis C virus (HCV) infection. GBV-B replicates in the liver and induces acute resolving hepatitis but little is known whether the other organs could be permissive for the virus. We investigated the viral tropism of GBV-B in tamarins in the acute stage of viral infection and found that the viral genomic RNA could be detected in a variety of tissues. Notably, a GBV-B-infected tamarin with marked acute viremia scarcely showed a sign of hepatitis, due to preferential infection in lymphoid tissues such as lymph nodes and spleen. These results indicate that GBV-B as well as HCV is a pleiotropic virus in vivo.
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Affiliation(s)
- Koji Ishii
- Department of Virology II, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
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Mori KI, Noguchi M, Matsuo M, Nomata K, Suematsu T, Kanetake H. Decreased cellular membrane expression of gap junctional protein, connexin 43, in rat detrusor muscle with chronic partial bladder outlet obstruction. Urology 2005; 65:1254-8. [PMID: 15922416 DOI: 10.1016/j.urology.2005.01.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 09/10/2004] [Revised: 12/24/2004] [Accepted: 01/24/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVES To investigate alterations in gap junctional protein, connexin-43 (Cx-43), in the rat detrusor muscle with partial bladder outlet obstruction (P-BOO). Muscle cell actions, such as detrusor contractions, are thought to be synchronized by way of gap junctional intercellular communication. Gap junctions may play an important role in voiding, and P-BOO is a common medical problem. METHODS A total of 33 female Wistar rats (12 weeks old) were divided into a P-BOO group and a sham-operated control group and were killed at 2, 4, and 8 weeks after surgery. Cystometric investigation, the alteration of gap junction, and Cx-43 protein expression, which compose the gap junction, were examined. RESULTS The number of gap junctions was decreased in the P-BOO rat bladder. Furthermore, decreased cellular membrane expression of Cx-43 proteins was detected in rat detrusor muscle cells more than 4 weeks after surgery. The gap junctions of the detrusor muscle cell membranes were significantly fewer in number in the P-BOO rats with no detrusor contractions. CONCLUSIONS These data suggest that the normal signals that contribute to voiding function could be transported directly through the gap junctions. Voiding dysfunction may be caused by the disruption of gap junctional intercellular communication.
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Affiliation(s)
- Ken-Ichi Mori
- Division of Nephro-Urology, Department of Translational Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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Takahashi H, Nomata K, Mori KI, Matsuo M, Miyaguchi T, Noguchi M, Kanetake H. The preventive effect of green tea on the gap junction intercellular communication in renal epithelial cells treated with a renal carcinogen. Anticancer Res 2004; 24:3757-62. [PMID: 15736408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
OBJECTIVE Clinical studies imply that (-)-epigallocatechin-3-gallate (EGCG), a main ingredient of green tea catechins, has a chemopreventive action against cancers and suppresses the proliferation of cancer cells. However, there is no report about its chemopreventive effect for renal cancer. We previously determined that renal carcinogens suppressed the gap junction intercellular communication (GJIC) of renal epithelial cells. In this study, we investigated the effect of EGCG on the GJIC of renal epithelial cells treated with a renal carcinogen. MATERIALS AND METHODS Mardin-Darby canine kidney (MDCK) cells were used to determine the protective effects of EGCG on dimethylnitrosamine-induced alteration of GJIC and connexin 43 (Cx 43). The maximum concentration of EGCG was determined by the lactate dehydrogenase assay method. The scrape-loading dye transfer method was used to assess the expression and cellular localization of Cx 43. The phosphorylation status of Cx 43 was determined by Western blot analysis. RESULTS The optimal noncytotoxic concentration of EGCG was determined to be 10 microg/ml. The levels of GJIC and Cx 43 expression were markedly decreased in MDCK cells exposed to dimethylnitrosamine. A 12-h pretreatment with EGCG greatly ameliorated the GJIC-inhibitory effects of dimethylnitrosamine. CONCLUSION These results suggest that the preservation of GJIC may indicate the chemopreventive effect of green tea on renal epithelial cells treated with a renal carcinogen in vitro.
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Affiliation(s)
- Hajime Takahashi
- Department of Urology, Nagasaki University School of Medicine, Nagasaki, Japan
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Park SC, Shimamura I, Fukunaga M, Mori KI, Nakai T. Isolation of bacteriophages specific to a fish pathogen, Pseudomonas plecoglossicida, as a candidate for disease control. Appl Environ Microbiol 2000; 66:1416-22. [PMID: 10742221 PMCID: PMC92002 DOI: 10.1128/aem.66.4.1416-1422.2000] [Citation(s) in RCA: 190] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Two types of bacteriophage specific to Pseudomonas plecoglossicida, the causative agent of bacterial hemorrhagic ascites disease in cultured ayu fish (Plecoglossus altivelis), were isolated from diseased ayu and the rearing pond water. One type of phage, which formed small plaques, was tentatively classified as a member of the family Myoviridae, and the other type, which formed large plaques, was classified as a member of the family Podoviridae. All 27 strains of P. plecoglossicida examined, which were isolated from diseased ayu from geographically different areas in 1991 to 1999, exhibited quite similar sensitivities to either type of phage. One strain of P. plecoglossicida was highly virulent for ayu, and the 50% lethal dose (LD(50)) when intramuscular injection was used was 10(1.2) CFU fish(-1); in contrast, phage-resistant variants of this organism were less virulent (LD(50), >10(4) CFU fish(-1)). Oral administration of phage-impregnated feed to ayu resulted in protection against experimental infection with P. plecoglossicida. After oral administration of P. plecoglossicida cells of this bacterium were always detected in the kidneys of control fish that did not receive the phage treatment, while the cells quickly disappeared from the phage-treated fish. Bacterial growth in freshwater was lower in the presence of phage, and the number of phage PFU increased rapidly. These results suggest that it may be possible to use phage to control the disease caused by P. plecoglossicida.
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Affiliation(s)
- S C Park
- Fish Pathology Laboratory, Faculty of Applied Biological Science, Hiroshima University, Higashi-hiroshima, Hiroshima, Japan
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