152 results on '"G. Arai"'
Search Results
2. Quantitative Evaluation and Visualization of Lumbar Foraminal Nerve Root Entrapment by Using Diffusion Tensor Imaging: Preliminary Results
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H. Kamoda, A. Watanabe, T. Ishikawa, Gen Inoue, Masashi Takaso, Kazuhisa Takahashi, Y. Aoki, Sumihisa Orita, Tomoaki Toyone, Yawara Eguchi, G. Arai, Masayuki Miyagi, Yoshitada Masuda, H. Andou, M. Suzuki, and Seiji Ohtori
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Adult ,Male ,musculoskeletal diseases ,Nerve root ,Pilot Projects ,Sensitivity and Specificity ,Entrapment ,Lumbar ,Foramen ,Lumbar nerve roots ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Aged ,Lumbar Vertebrae ,Lumbar Nerve ,business.industry ,Nerve Compression Syndromes ,Reproducibility of Results ,Anatomy ,Middle Aged ,Image Enhancement ,Spine ,Diffusion Tensor Imaging ,Female ,Neurology (clinical) ,Spinal Nerve Roots ,business ,Diffusion MRI ,Tractography - Abstract
BACKGROUND AND PURPOSE: DTI can provide valuable structural information that may become an innovative tool in evaluating lumbar foraminal nerve root entrapment. The purpose of this study was to visualize the lumbar nerve roots and to measure their FA in healthy volunteers and patients with lumbar foraminal stenosis by using DTI and tractography with 3T MR imaging. MATERIALS AND METHODS: Eight patients with lumbar foraminal stenosis and 8 healthy volunteers underwent 3T MR imaging. In all subjects, DTI was performed with echo-planar imaging at a b-value of 800 s/mm2 and the lumbar nerve roots were visualized with tractography. Mean FA values in the lumbar nerve roots were quantified on DTI images. RESULTS: In all subjects, the lumbar nerve roots were clearly visualized with tractography. In all patients, tractography also showed abnormalities such as tract disruption, nerve narrowing, and indentation in their course through the foramen. Mean FA values were significantly lower in entrapped roots than in intact roots. CONCLUSIONS: We demonstrated that DTI and tractography of human lumbar nerves can visualize and quantitatively evaluate lumbar nerve entrapment with foraminal stenosis. We believe that DWI is a potential tool for the diagnosis of lumbar nerve entrapment.
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- 2011
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3. Lost in Transition: Youth, Work, and Instability in Postindustrial Japan. By Mary C. Brinton. New York: Cambridge University Press, 2011. Pp. xxvi+203. $27.99 (paper)
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Andrea G. Arai
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Sociology and Political Science ,Youth work ,Political science ,Political economy ,Post-industrial society ,Economic history - Published
- 2013
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4. Killing kids: recession and survival in twenty-first-century Japan
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Andrea G Arai
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History ,media_common.quotation_subject ,Political Science and International Relations ,Twenty-First Century ,Economic history ,Recession ,Demography ,media_common - Abstract
(2003). Killing kids: recession and survival in twenty-first-century Japan. Postcolonial Studies: Vol. 6, No. 3, pp. 367-379.
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- 2003
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5. The 'Wild Child' of 1990s Japan
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Andrea G. Arai
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Cultural Studies ,Literature and Literary Theory ,Sociology and Political Science - Published
- 2000
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6. [Efficacy of a single-day administration of levofloxacin for the prevention of urinary tract infections after urogenital examinations and treatments for outpatients]
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T, Hayashi, Y, Sakai, K, Saito, G, Arai, N, Hyochi, M, Suzuki, H, Masuda, S, Kawakami, T, Okuno, T, Kobayashi, Y, Kageyama, and K, Kihara
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Adult ,Aged, 80 and over ,Male ,Ofloxacin ,Anti-Infective Agents, Urinary ,Administration, Oral ,Levofloxacin ,Middle Aged ,Drug Administration Schedule ,Outpatients ,Urinary Tract Infections ,Ambulatory Care ,Humans ,Female ,Aged - Abstract
The clinical efficacy of a single-day oral administration of levofloxacin (LVFX) for the prevention of urinary tract infections (UTI) after urogenital examinations and treatments for outpatients was assessed. A single-day oral administration of LVFX, 100 mg three times a day, was compared to a single dose intra-muscular injection of 100 mg netilmicin sulfate or 100 mg dibekacin sulfate. Three of 219 cases (1.4%) and 7 of 304 cases (2.3%) contracted UTI in the single-day oral administration group and the single dose intra-muscular injection group, respectively. Adverse reactions were observed in 3 of 219 cases (1.4%) and 27 of 304 cases (8.8%) in the single-day oral administration group and the single dose intra-muscular injection group, respectively. In the single dose intra-muscular injection group, UTI and adverse reactions were more severe than in the single-day oral administration group. Therefore, a single-day oral administration of LVFX was superior to a single dose intra-muscular injection of netilmicin sulfate or dibekacin sulfate in the prevention of UTI with less probability of the adverse effects. A single-day oral administration of LVFX was concluded to be sufficient for the prevention of UTI caused by examinations and treatments for outpatients.
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- 2002
7. [A case of renal cell carcinoma with solitary metastasis to the contralateral adrenal gland]
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G, Arai, T, Kamai, A, Nagamoto, K, Saito, and M, Hirokawa
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Adrenal Gland Neoplasms ,Humans ,Interferon-alpha ,Adrenalectomy ,Female ,Middle Aged ,Carcinoma, Renal Cell ,Nephrectomy ,Kidney Neoplasms - Abstract
A 62-year-old female was admitted to our hospital with left flank pain and weight loss. Computerized tomography revealed a large left adrenal tumor and a small right renal tumor. A left adrenalectomy was performed initially to confirm sparing the left kidney. The left adrenal tumor weighed 650 g and was renal cell carcinoma histologically, suggesting a contralateral metastasis of the right renal tumor. Two months after the adrenalectomy, the right kidney was excised. The right adrenal gland was preserved. Pathologically, the renal tumor was also renal cell carcinoma. The patient has remained well for 34 months after the operation. The literature concerning the adrenal metastasis of renal cell carcinoma is briefly reviewed.
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- 1997
8. Status of SOX9 in the testesof SRY negative and positive azoospermic males
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S. Soh, Yoshitomo Kobori, G. Arai, and Hiroshi Okada
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Andrology ,Testis determining factor ,Reproductive Medicine ,Obstetrics and Gynecology ,SOX9 ,Biology - Published
- 2012
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9. Influence of Mechanical Stress on Low Back Pain Related to Osteoporosis: Dynamics of Sensory Nerve Transmission of Pain in the Caudal Vertebrae under Compression using a Rat Model of Osteoporosis
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Seiji Ohtori, Kazuhisa Takahashi, Y. Sakuma, Gen Inoue, Tetsuhiro Ishikawa, Yasuhiro Oikawa, G. Arai, Sumihisa Orita, Masayuki Miyagi, M. Suzuki, and H. Kamoda
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medicine.medical_specialty ,business.industry ,Osteoporosis ,Lumbar vertebrae ,Calcitonin gene-related peptide ,medicine.disease ,Low back pain ,Endocrinology ,medicine.anatomical_structure ,Calcitonin ,Anesthesia ,Internal medicine ,Neuropathic pain ,medicine ,Ovariectomized rat ,Orthopedics and Sports Medicine ,Surgery ,Neurology (clinical) ,medicine.symptom ,business ,Sensory nerve - Abstract
Introduction We have previously reported that inflammatory mediators secreted by osteoclasts increased the expression of calcitonin gene-related peptide (CGRP), a marker of inflammatory pain in dorsal root ganglia (DRG) neurons innervating lumbar vertebrae of osteoporotic rats. We sought to determine whether osteoporotic pain is simply inflammatory pain. We focused on the possibility that pain is exacerbated by mechanical stress on the vertebral body, particularly in elderly people. The purpose of this study was to examine the dynamics of sensory nerve transmission of pain and the effect of mechanical stress on osteoporotic pain using a caudal vertebrae compression model in osteoporotic rats. Materials and Methods As an osteoporosis model, we used female rats ovariectomized (OVX) at 5 weeks ( n = 24). Fluoro-Gold (FG) was applied to the periosteal surface of a caudal vertebra to detect DRG neuronal cells innervating the caudal vertebra. After FG-labeling, we divided into two groups: OVX + CMP group (n = 12) with K-wires inserted above and below a caudal vertebral body compressed using rubber bands and OVX group (n = 12) without compression. After 1, 2, 4, and 8 weeks of FG-labeling, bilateral S1 to S3 DRGs were resected ( n = 3 for each). In FG-labeled neurons, expression of CGRP and activating transcription factor 3 (ATF3), a marker of neuropathic pain, were compared between two groups using immunohistochemistry. Results The proportions of FG-labeled CGRP immunoreactive neurons in the OVX + CMP group were significantly elevated at 4 and 8 weeks compared with the OVX group ( p Conclusion The rat caudal vertebra compression model with osteoporosis expressed significantly more ATF3 in DRG cells at 8 weeks. This suggests that micronerve injury occurred in sensory neurons innervating caudal vertebra of these osteoporotic rats. Therefore, mechanical stress may possibly exacerbate osteoporotic pain. I confirm having declared any potential conflict of interest for all authors listed on this abstract Yes Disclosure of Interest None declared
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- 2012
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10. Inhibiting Brain-Derived Neurotrophic Factor (Bdnf) at the Punctured Intervertebral Disk Downregulates Pain-Related Neuropeptide Production in Dorsal Root Ganglia in Rats
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Sumihisa Orita, Gen Inoue, Tetsuhiro Ishikawa, Yawara Eguchi, Y. Sakuma, Kazuyo Yamauchi, Kazuhisa Takahashi, K. Inage, Masayuki Miyagi, G. Arai, Seiji Ohtori, M. Suzuki, Yasuhiro Oikawa, Gou Kubota, and H. Kamoda
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Brain-derived neurotrophic factor ,medicine.medical_specialty ,biology ,business.industry ,Central nervous system ,Neuropeptide ,Calcitonin gene-related peptide ,Spinal cord ,Intervertebral disk ,medicine.anatomical_structure ,Endocrinology ,nervous system ,Dorsal root ganglion ,Internal medicine ,Anesthesia ,medicine ,biology.protein ,Orthopedics and Sports Medicine ,Surgery ,Neurology (clinical) ,business ,Neurotrophin - Abstract
Introduction BDNF-a neurotrophin in dorsal root ganglion (DRG) neurons-is known to be anterogradely transported to the spinal cord and transmits pain signals existing in the central nervous system. A previous study has recently reported its presence in the peripheral sites of degenerative IVDs, although its association with discogenic pain remains unclear. The present study aimed to investigate the association between BDNF and pain-related sensory innervation of multiple-punctured lumbar IVD in rats. Materials and Methods Forty female Sprague-Dawley rats were equally divided into four groups: naïve, sham, and two agent-treated groups (vehicle (saline-treated) and anti-BDNF (anti-BDNF antibody) group). L5-6 IVDs of the agent-treated rats were exposed and injured by repeated punctures. The retrograde neurotracer Fluoro-Gold (FG) and treatment agents were intradiscally applied. In the sham group, FG alone was applied onto uninjured IVD. One week later, L1-3 DRGs were harvested and immunolabeled for the inflammatory pain-related calcitonin gene-related peptide (CGRP), that is, the pain marker. The proportions of FG-labeled CGRP-immunoreactive (-ir) DRG neurons were assessed. BDNF concentration of each L5-6 IVD was measured using enzyme-linked immunosorbent assay (ELISA). Results FG-labeled DRG neurons were almost equally prevalent at each DRG level. The proportions of FG-labeled CGRP-ir DRG neurons in the two agent-treated groups were significantly elevated ( p Conclusion Direct intradiscal application of the anti-BDNF antibody significantly suppressed both CGRP production and the local concentration of BDNF. Our results indicate a possible association between the local production of BDNF and the pathophysiology of discogenic pain. I confirm having declared any potential conflict of interest for all authors listed on this abstract Yes Disclosure of Interest None declared
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- 2012
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11. P.430 Changes in MRI flndings of the TMJ after simple irrigation
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K. Nkaoka, T. Sonoyama, K. Nakaoka, Y. Hamada, K. Seto, H. Nakatani, Y. Nakatani, A. Horie, and G. Arai
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Irrigation ,Mathematical optimization ,Otorhinolaryngology ,business.industry ,Simple (abstract algebra) ,Medicine ,Surgery ,Oral Surgery ,business - Published
- 2008
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12. The structure of ibogaine
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G. A. Jeffrey, G. Arai, and J. Coppola
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Chemistry ,Stereochemistry ,Ibogaine ,medicine ,General Earth and Planetary Sciences ,General Environmental Science ,medicine.drug - Published
- 1960
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13. Surface deformation on the west portion of the Chapala lake basin: uncertainties and facts
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M. Hernandez-Marin, J. Pacheco-Martinez, J. A. Ortiz-Lozano, G. Araiza-Garaygordobil, and A. Ramirez-Cortes
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Environmental sciences ,GE1-350 ,Geology ,QE1-996.5 - Abstract
In this study we investigate different aspects of land subsidence and ground failures occurring in the west portion of Chapala lake basin. Currently, surface discontinuities seem to be associated with subsiding bowls. In an effort to understand some of the conditioning factors to surface deformation, two sounding cores from the upper sequence (11 m depth) were extracted for analyzing physical and mechanical properties. The upper subsoil showed a predominant silty composition and several lenses of pumice pyroclastic sand. Despite the relative predominance of fine soil, the subsoil shows mechanical properties with low clay content, variable water content, low plasticity and variable compressibility index, amongst some others. Some of these properties seem to be influenced by the sandy pyroclastic lenses, therefore, a potential source of the ground failure could be heterogeneities in the upper soil.
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- 2015
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14. Filamentary Domain-Reversal Defects in Y-Z LiNbO3: Structure, Composition, and Visualization Techniques
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G. Arai, R.L. Miller, A. Cocco, J. Wallner, and T. Knowles
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Materials science ,Optics ,Condensed matter physics ,business.industry ,Etching ,Microscopy ,Domain (ring theory) ,Structure (category theory) ,business ,Visualization - Published
- 1979
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15. Optimization of Soft X-ray Spectra in the Water Window from Multi-charged Ion Plasmas
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T., Higashiguchi, H., Ohashi, Y., Suzuki, M., Kawasaki., G., Arai, S., Fujioka, G., O’Sullivan, P., Dunne, E., Sokell, C., Suzuki, H.A., Sakaue, D., Kato, and I., Murakami
16. Gaze measurements during viewing human dialogue scenes in adults with ADHD: Preliminary findings.
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Nagatsuka Y, Nakamura D, Ota M, Arai G, Iwami Y, Suzuki H, Tomita A, Hanawa Y, Hayashi W, and Iwanami A
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- Adult, Humans, Fixation, Ocular, Cognition, Attention Deficit Disorder with Hyperactivity diagnosis, Autism Spectrum Disorder diagnosis
- Abstract
Aim: Eye gaze measurement to human dialogue scenes in adults with attention deficit hyperactivity disorder (ADHD) was investigated. We examined whether eye gaze measurement might be a biological marker of ADHD., Methods: Twenty-two individuals with ADHD (mean age, 34.5 years) attending the outpatient clinic of Showa University Karasuyama Hospital were included in the study, and 26 healthy individuals (mean age, 32.6 years) with no history of mental disorders were used as the control group. For the participants, intellectual functioning was estimated using the Japanese Adult Reading Test, and mental symptoms were assessed using the Autism Spectrum Quotient and Conner's Adult ADHD Rating Scale. We extracted human dialogue scenes from two classic movies as visual stimuli and recorded the participant's gaze while watching these scenes using Tobii's eye tracker., Results: For gazing time, repeated measures analysis of variance showed no significant main effect of "group" and no significant interaction effect between "group" and areas of interest "(AOI)." In the normal group, gazing time at the eyes was significantly longer than those at the mouth, body, and background; in the ADHD group, gazing time at the eyes was significantly longer than only that at the background., Conclusion: Given the different results obtained in the past in ASD, these results suggest that it would be necessary to directly compare the two groups to determine whether the gaze measurement shows significant differences in ASD and ADHD., (© 2023 The Authors. Neuropsychopharmacology Reports published by John Wiley & Sons Australia, Ltd on behalf of The Japanese Society of Neuropsychopharmacology.)
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- 2024
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17. Management of patients with advanced prostate cancer in Japan: 'real-world' consideration of the results from the Advanced Prostate Cancer Consensus Conference.
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Fujita K, Suzuki H, Hinata N, Miura Y, Edamura K, Tabata KI, Arai G, Matsubara N, Yasumizu Y, Kosaka T, Oya M, and Sugimoto M
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A multidisciplinary approach is necessary to manage advanced prostate cancer. The Advanced Prostate Cancer Consensus Conference (APCCC) in 2019 provided a practical guide to help clinicians consider therapeutic options in controversial areas, but healthcare systems vary across the world. At the 109th annual meeting of the Japanese Urological Association in December 2021, Japanese urologists voted on the questions in the APCCC 2019 guidelines regarding prostate-specific membrane antigen-positron emission tomography (PSMA-PET), management of oligometastatic prostate cancer, management of nonmetastatic castration-resistant prostate cancer (CRPC), management of a primary tumor in metastatic settings, systemic treatment of newly diagnosed metastatic castration-sensitive prostate cancer (CSPC), management of metastatic CRPC (mCRPC), and tumor genomic testing. We summarize the "real-world" status of the management of advanced prostate cancer in Japan. Several differences were noted in the management of advanced prostate cancer between Japanese urologists and the APCCC 2019 guidelines. Many Japanese urologists chose conventional imaging modalities for detecting metastasis instead of PSMA-PET. More Japanese urologists prefer androgen-deprivation therapy (ADT) alone in the management of low-volume metastatic CSPC than the APCCC panelists do, In the management of M0 CRPC, darolutamide and enzalutamide were chosen more by Japanese urologists than by the voters at the APCCC 2019. Bicalutamide remains one of the options for the management of mCRPC in Japan. More Japanese urologists do not recommend microsatellite instability (MSI) and BRCA1/2 tests than the voters at the APCCC 2019. Clinical evidence in Japan should be collected to address these discrepancies., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://tau.amegroups.com/article/view/10.21037/tau-22-396/coif). KF serves as an unpaid editorial board member of Translational Andrology and Urology from October 2021 to September 2023. HS received grants from Takda, Nippon-Shinyaku, Bayer, Kissei, Sanofi, Daiichi-Sankyo, Taiho, Ono, Nihon-Kayaku, Astellas, Janssen, AstraZeneca and participated on a Data Safety Monitoring Board or Advisory Board in Janssen, Bayer, Sanofi, AstraZeneca, Eli-lily, MSD and Astellas. YM reports personal honoraria from Takeda, MSD, ONO pharmaceutical, Bristol-Myers Squibb, Chugai Pharmaceutical, outside the submitted work; Institutional financial interest from MSD and ONO pharmaceutical. KT received honoraria from Janssen, MSD, AstraZeneca, Bayer, Astellas and Chugai, Sanofi, Kyowakirin and Takeda. NM received speaker bureau from Janssen and Sanofi, and received research funding for institution from Janssen, AstraZeneca, Bayer, Roche, MSD, Taiho, Astellas, Amgen, Eisai, Eli Lilly, PRA Health Science, Takeda, Pfizer, Seagen, Chugai, Abbvie and Novartis. MO reports personal honoraria from Astellas, Sanofi, Janssen, Astrazeneca, Takeda, Bayer and MSD, and received research funding for Astellas. MS received honoraria for lecture from Janssen, Astellas, AstraZeneca. The other authors have no conflicts of interest to declare., (2022 Translational Andrology and Urology. All rights reserved.)
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- 2022
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18. Orthodontic Management of the Edentulous Space Caused by Surgical Removal of a Large Dentigerous Cyst.
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Yamada Y, Arai C, Nakaoka K, Yoshida T, Sasaki K, Arai G, Hamada Y, and Tomonari H
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Herein, we report the orthodontic management of a patient with excessive bone and permanent tooth loss after surgical cyst removal. The patient was a 13-year-old Japanese boy who was referred to our department by an oral surgeon. He had an edentulous space with alveolar bone loss and loss of 2 permanent molars in the left mandibular region, following surgical removal of a large dentigerous cyst. We decided to close this space orthodontically. First, we moved the left mandibular second premolar into the edentulous region and autotransplanted the left maxillary lateral incisor in the adjacent distal space. We then performed comprehensive orthodontic treatment to establish stable occlusion. Following treatment, functional and stable occlusion of all permanent teeth was achieved without any spaces. The findings from this case suggest that orthodontic treatment is effective in growing patients with edentulous spaces and alveolar bone loss.
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- 2022
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19. Effects of Gaze Cues on Distributive Behavior of the Ultimatum Game in Adults With Attention Deficit Hyperactivity Disorder.
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Ikuse D, Hayashi W, Hanawa Y, Nakamura D, Arai G, Saga N, and Iwanami A
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- Adult, Cues, Humans, Reaction Time, Attention Deficit Disorder with Hyperactivity diagnosis, Autism Spectrum Disorder diagnosis
- Abstract
Abstract: Adults with attention deficit hyperactivity disorder (ADHD) have difficulty in social decision-making. The ultimatum game (UG) is a popular economic game used to evaluate social decision-making. This study aimed to examine the effects of schematically depicted eyes and ADHD symptoms on UG performance. Thirty adults with ADHD were recruited. The computer screen background was changed among the "eyespots," "neutral," and "flowers" conditions among 30 trials of UG. Through all trials, task performances were recorded, and then compared with 30 typical adults and 30 adults with autism spectrum disorder (ASD). The reaction time was not affected by the background in any group. Although typical adults distributed more money in the "eyespots" condition, a nonsignificant background effect was observed in adults with ADHD or ASD. These results may be associated with reduced attention to social cues in individuals with ADHD, and this ADHD characteristic might lead to difficulty in social decision-making., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2022
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20. Safety and efficacy of apalutamide in Japanese patients with metastatic castration-sensitive prostate cancer receiving androgen deprivation therapy: Final report for the Japanese subpopulation analysis of the randomized, placebo-controlled, phase III TITAN study.
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Uemura H, Arai G, Uemura H, Suzuki H, Aoyama J, Hatayama T, Ito M, Lefresne F, McCarthy S, Mundle S, He J, and Chi KN
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- Androgens therapeutic use, Castration, Double-Blind Method, Humans, Japan, Male, Thiohydantoins, Androgen Antagonists adverse effects, Prostatic Neoplasms, Castration-Resistant
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Objectives: The TITAN study is a randomized, double-blind, placebo-controlled, multinational trial that evaluated apalutamide with androgen deprivation therapy in patients with metastatic castration-sensitive prostate cancer. At the first interim analysis in the Japanese subpopulation (median follow-up 25.7 months), there was an improvement in overall survival and radiological progression-free survival with apalutamide versus placebo. Here, we report the final analysis results for the Japanese subpopulation., Methods: Patients were randomized 1:1 to receive apalutamide 240 mg or placebo. After the first interim analysis, protocol treatment was unblinded, and crossover was allowed. Efficacy and safety were evaluated in the preplanned, event-driven final analysis., Results: Fifty-one patients were Japanese (apalutamide n = 28; placebo n = 23). After a median follow-up of 46.0 months, the median overall survival was not reached neither in the apalutamide nor the placebo group; the hazard ratio was 0.45, favoring apalutamide, which was consistent with the overall population. Hazard ratios for time to cytotoxic chemotherapy (0.39), time to pain progression (0.87), and time to chronic opioid use (0.82) also favored apalutamide and were comparable with those of the overall population. Time to prostate-specific antigen progression and progression-free survival 2, respectively, was favored in the apalutamide group (0.21 and 0.44). Apalutamide was associated with higher incidences of rash and fracture in the Japanese subpopulation compared with the overall population., Conclusions: The efficacy of apalutamide with androgen deprivation therapy in Japanese patients was consistent with efficacy demonstrated in the overall population. No new safety concerns emerged with long-term follow-up., (© 2022 Janssen Pharmaceutical K.K. International Journal of Urology published by John Wiley & Sons Australia, Ltd on behalf of the Japanese Urological Association.)
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- 2022
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21. Apalutamide for patients with metastatic castrationsensitive prostate cancer in East Asia: a subgroup analysis of the TITAN trial.
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Chung BH, Huang J, Ye ZQ, He DL, Uemura H, Arai G, Kim CS, Zhang YY, Koroki Y, Jeong S, Mundle S, Triantos S, McCarthy S, Chi KN, and Ye DW
- Subjects
- Androgen Antagonists adverse effects, Exanthema chemically induced, Asia, Eastern, Humans, Male, Prostate-Specific Antigen, Prostatic Neoplasms, Castration-Resistant drug therapy, Prostatic Neoplasms, Castration-Resistant pathology, Thiohydantoins adverse effects
- Abstract
Ethnicity might be associated with treatment outcomes in advanced prostate cancer. This study aimed to evaluate the efficacy and safety of androgen deprivation therapy (ADT) combined with apalutamide in East Asians with metastatic castration-sensitive prostate cancer (mCSPC). The original phase 3 Targeted Investigational Treatment Analysis of Novel Anti-androgen (TITAN) trial was conducted at 260 sites in 23 countries. This subgroup analysis included patients enrolled in 62 participating centers in China, Japan, and Korea. Radiographic progression-free survival (PFS), time to prostate-specific antigen (PSA) progression, and PSA changes from baseline were compared between groups in the East Asian population. The intent-to-treat East Asian population included 111 and 110 participants in the apalutamide and placebo groups, respectively. The 24-month radiographic PFS rates were 76.1% and 52.3% in the apalutamide and placebo groups, respectively (apalutamide vs placebo: hazard ratio [HR] = 0.506; 95% confidence interval [CI], 0.302-0.849; P = 0.009). Median time to PSA progression was more favorable with apalutamide than placebo (HR = 0.210; 95% CI, 0.124-0.357; P < 0.001). Median maximum percentages of PSA decline from baseline were 99.0% and 73.9% in the apalutamide and placebo groups, respectively. The most common adverse event (AE) was rash in the apalutamide group, with a higher rate than that in the placebo group (37.3% vs 9.1%). The most common grade 3 or 4 AEs were rash (12 [10.9%]) and hypertension (12 [10.9%]) for apalutamide. The efficacy and safety of apalutamide in the East Asian subgroup of the TITAN trial are consistent with the global results., Competing Interests: None
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- 2022
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22. Role of Early Serial Renal Transplant Allograft Protocol Biopsies in Living Kidney Transplantations.
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Setoguchi K, Hyodo Y, Tsujioka H, Inoue M, Nirazuka A, Yoshida Y, Hasegawa K, Yasuda Y, Osaka A, Inoe Y, Nakayama A, Sadaoka Y, Arai G, Fujii A, Shirakawa H, Takeda T, Saito K, and Tokumoto T
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- Adult, Allografts, Biopsy, Graft Rejection, Humans, Kidney pathology, Tacrolimus therapeutic use, Kidney Transplantation adverse effects
- Abstract
Purpose: This study aimed to analyze the incidence of subclinical rejection (SCR) in kidney transplantation patients and risk factors associated with SCR., Methods: We assessed 80 protocol biopsies taken within 2 years postoperatively in 41 adult patients who underwent living donor kidney transplantation between 2017 and 2020. All patients were on immunosuppressant therapy that included tacrolimus, mycophenolate mofetil, and steroids., Results: The prevalence of Banff Borderline classification at 3, 6, and 12 months after transplantation was 4%, 5%, and 8 %, respectively, whereas none of the biopsies met the Banff criteria for acute T cell-mediated rejection throughout the study period. Active antibody-mediated rejection (ABMR) was only present in 8% of patients at 3 months after transplantation and chronic active ABMR at 6, 12, and 24 months after transplantation was detected in 10%, 13%, and 11% of the patients, respectively. Subgroup analysis revealed that 50% of the 6 patients with preformed anti-donor specific antibodies (DSAs) developed clinical or subclinical active ABMR within 3 months after transplantation, followed by chronic active ABMR according to serial histologic assessment. Conversely, only a small proportion of patients (3%) without preformed DSAs exhibited clinically active ABMR., Conclusions: SCR occurs too infrequently in patients with low immunologic risk and strong contemporary immunosuppression therapy to justify the diagnostic effort of serial protocol biopsies. However, protocol biopsies remain an indispensable tool in renal transplant monitoring and may be especially important in immunologically high-risk patients with pre-existing DSAs., (Copyright © 2021 Elsevier Inc. All rights reserved.)
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- 2022
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23. Unmet needs in non-metastatic castration-resistant prostate cancer from the Japanese patient perspective: a discrete choice experiment.
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Uemura H, Matsushima H, Yokomizo A, Kobayashi K, Arai G, Satoh T, Grillo V, Chen Y, Singh S, and Ledesma DA
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- Adult, Androgen Antagonists adverse effects, Bayes Theorem, Cross-Sectional Studies, Humans, Japan, Male, Prostatic Neoplasms, Castration-Resistant drug therapy
- Abstract
Objectives: With novel antiandrogen treatments of varying clinical benefits and risks becoming available, this study investigates how patients with castration-resistant prostate cancer (CRPC) value differences in treatment characteristics., Design: Cross-sectional observational study., Setting: A discrete choice experiment was conducted. Patients chose between two hypothetical non-metastatic CRPC (nmCRPC) treatments defined by six attributes: risk of fatigue, falls or fracture, cognitive impairment, hypertension, rashes as side effects to treatment and extension of time until cancer-related pain occurs., Participants: A total of 137 adult male patients with CRPC with no prior experience with chemotherapy and with Eastern Cooperative Oncology Group status 0-1 were recruited. Patients were excluded if they participated in an investigational programme outside of routine clinical practice, had a clinically relevant medical or psychiatric condition, or diagnosis of visceral/other metastases not related to the prostate, or were otherwise deemed ineligible by the referring physician., Primary Outcome Measures: Relative preference weights and relative importance of the attributes was estimated by hierarchical Bayesian logistic regression., Results: Among the treatment attributes, 'risk of cognitive impairment as a side effect of treatment' was the most important attribute (relative importance (RI) (95% CI): 27.47% (24.80% to 30.14%)), followed by 'extension of time until cancer-related pain occurs' (RI (95% CI): 17.87% (15.49% to 20.25%)) and the 'risk of falls or fracture' (RI (95% CI): 15.99% (14.73% to 17.25%)). The 'risk of hypertension as a side effect of treatment' (RI (95% CI): 13.77% (12.73% to 14.81%)) had similar RI as 'risk of rashes as a side effect of treatment' (RI (95% CI): 13.17% (12.15% to 14.19%)), followed by the 'risk of fatigue as a side effect of treatment' (RI (95% CI): 11.74% (10.75% to 12.73%))., Conclusions: Patients consider the risk of cognitive impairment as a side effect of treatment as the most important attribute in nmCRPC, followed by the extension of time until cancer-related pain occurs, and the risk of falls and fracture. These features should be considered in treatment decision making for nmCRPC in Japan., Competing Interests: Competing interests: DAL is an employee of Bayer Yakuhin. VG, SS and YC are employees of Kantar, Health Division., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2021
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24. Patient-reported outcomes following neoadjuvant endocrine therapy, external beam radiation, and adjuvant continuous/intermittent endocrine therapy for locally advanced prostate cancer: A randomized phase III trial.
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Yokomizo A, Koga H, Ito K, Takezawa Y, Komiyama M, Nishimura K, Yonese J, Hashine K, Masumori N, Arai G, Saito S, Shinohara M, Shimizu N, Yamauchi A, Satoh T, Tochigi T, Kobayashi M, Fujimoto H, Kakimoto KI, Fukui I, Tsukamoto T, Nozaki M, Karasawa K, Hasumi M, Ohtani M, Ishiyama H, Kuwahara M, Harada M, Ohashi Y, Kotake T, Kakizoe T, Suzuki K, Naito S, and Yamanaka H
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- Aged, 80 and over, Combined Modality Therapy methods, Humans, Male, Neoadjuvant Therapy methods, Patient Reported Outcome Measures, Androgen Antagonists therapeutic use, Prostatic Neoplasms drug therapy, Prostatic Neoplasms radiotherapy
- Abstract
Background: We evaluated patient-reported outcomes (PRO) during neoadjuvant androgen deprivation therapy (ADT) plus external beam radiation therapy (EBRT) followed by either adjuvant continuous ADT (CADT) or intermittent ADT (IADT) for patients with locally advanced prostate cancer (Pca)., Methods: A multicenter, randomized phase III trial enrolled 303 patients with locally advanced Pca. The patients were treated with 6 months (M) of ADT followed by 72 Gy of EBRT, and were randomly assigned to CADT or IADT after 14 M. The PROs were evaluated at sic points: baseline, 6 M, 8 M, 14 M, 20 M, and 38 M using FACT-P questionnaires and EPIC urinary, bowel, and sexual bother subscales., Results: The FACT-P total scores were significantly better (p < 0.05) in IADT versus CADT at 20 M (121.6 vs.115.4) and at 38 M (119.9 vs. 115.2). The physical well-being scores (PWB) were significantly better (p < 0.05) in IADT versus CADT at 38 M (25.4 vs. 24.0). The functional scores were significantly better in IADT than those in CADT at 14 M (20.2 vs18.7, p < 0.05) and at 20 M (21.0 vs.18.9, p < 0.05)., Conclusion: The PRO was significantly favorable in IADT on FACT-P total score at 20 M and 38 M, PWB and functional scores at 38 M., (© 2021 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)
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- 2021
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25. Effects of Curcumin Combined With the 5-alpha Reductase Inhibitor Dutasteride on LNCaP Prostate Cancer Cells.
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Nakayama A, Ide H, Lu Y, Takei A, Fukuda K, Osaka A, Arai G, Horie S, Okada H, and Saito K
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- 5-alpha Reductase Inhibitors pharmacology, Azasteroids pharmacology, Cell Line, Tumor, Chromatography, Liquid, Dihydrotestosterone pharmacology, Dutasteride pharmacology, Humans, Male, Tandem Mass Spectrometry, Curcumin pharmacology, Prostatic Neoplasms drug therapy
- Abstract
Background/aim: Curcumin is a natural compound of turmeric, which inhibits prostate cancer cell proliferation. This study examined whether treatment of LNCaP prostate cancer cells with the combination of curcumin and dutasteride, a 5-alpha reductase inhibitor, affect proliferation and the amount of testosterone and dihydrotestosterone., Materials and Methods: LNCaP Cells were incubated with curcumin or the combination of curcumin and dutasteride and cell proliferation was measured at 72 h. LC-MS/MS was used to determine testosterone and dihydrotestosterone concentrations in prostate cancer cells., Results: Curcumin combined with dutasteride suppressed proliferation and affected apoptosis of LNCaP cells. The combination of curcumin and dutasteride also reduced the amount of testosterone and dihydrotestosterone in LNCaP cells. The secretion of prostate-specific antigen was inhibited by the combination treatment in a dose-dependent manner., Conclusion: Treatment with the combination of curcumin and dutasteride may interfere with the intra-tumoral androgen activity., (Copyright© 2021, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.)
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- 2021
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26. Efficacy and safety of abiraterone acetate plus prednisolone in patients with early metastatic castration-resistant prostate cancer who failed first-line androgen-deprivation therapy: a single-arm, phase 4 study.
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Kobayashi K, Okuno N, Arai G, Nakatsu H, Maniwa A, Kamiya N, Satoh T, Kikukawa H, Nasu Y, Uemura H, Nakashima T, Mikami K, Iinuma M, Tanabe K, Furukawa J, and Kobayashi H
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- Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols adverse effects, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Neoplasm Metastasis, Prednisolone administration & dosage, Progression-Free Survival, Treatment Outcome, Abiraterone Acetate adverse effects, Abiraterone Acetate therapeutic use, Androgens deficiency, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Prednisolone therapeutic use, Prostatic Neoplasms, Castration-Resistant drug therapy, Prostatic Neoplasms, Castration-Resistant pathology
- Abstract
Aim: The aim was to evaluate the efficacy and safety of abiraterone acetate plus prednisolone in patients with chemotherapy-naïve early metastatic castration-resistant prostate cancer who failed first-line androgen deprivation therapy., Methods: Patients with early metastatic castration-resistant prostate cancer with confirmed prostate-specific antigen progression within 1-year or prostate-specific antigen progression without having normal prostate-specific antigen level (<4.0 ng/mL) during first-line androgen deprivation therapy were enrolled and administered abiraterone acetate (1000 mg) plus prednisolone (10 mg). A minimum of 48 patients were required according to Simon's minimax design. The primary endpoint was prostate-specific antigen response rate (≥50% prostate-specific antigen decline by 12 weeks), secondary endpoints included prostate-specific antigen progression-free survival and overall survival. Safety parameters were also assessed., Results: For efficacy, 49/50 patients were evaluable. Median age was 73 (range: 55-86) years. The median duration of initial androgen deprivation therapy was 32.4 (range: 13.4-84.1) weeks and 48 patients experienced prostate-specific antigen progression within 1-year after initiation of androgen deprivation therapy. prostate-specific antigen response rate was 55.1% (95% confidence interval: 40.2%-69.3%), median prostate-specific antigen-progression-free survival was 24.1 weeks, and median overall survival was 102.9 weeks (95% confidence interval: 64.86 not estimable [NE]). Most common adverse event was nasopharyngitis (15/50 patients, 30.0%). The most common ≥grade 3 adverse event was alanine aminotransferase increased (6/50 patients, 12.0%)., Conclusions: Abiraterone acetate plus prednisolone demonstrated a high prostate-specific antigen response rate of 55.1%, suggesting tumor growth still depends on androgen synthesis in patients with early metastatic castration-resistant prostate cancer. However, prostate-specific antigen-progression-free survival was shorter than that reported in previous studies. Considering the benefit-risk profile, abiraterone acetate plus prednisolone would be a beneficial treatment option for patients with chemotherapy-naive metastatic prostate cancer who show early castration resistance., (© The Author(s) 2020. Published by Oxford University Press.)
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- 2021
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27. Apalutamide for metastatic, castration-sensitive prostate cancer in the Japanese population: A subgroup analysis of the randomized, double-blind, placebo-controlled phase 3 TITAN study.
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Uemura H, Arai G, Uemura H, Suzuki H, Iijima K, Nishimura K, Fujii K, Hatayama T, Aoyama J, Deprince K, Lopez-Gitlitz A, McCarthy S, Larsen JS, Li J, and Chi KN
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- Castration, Double-Blind Method, Humans, Japan, Male, Thiohydantoins, Androgen Antagonists adverse effects, Prostatic Neoplasms, Castration-Resistant drug therapy
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Objective: To evaluate the efficacy and safety of apalutamide + androgen deprivation therapy versus androgen deprivation therapy alone in Japanese patients with metastatic castration-sensitive prostate cancer from the phase 3, randomized, global TITAN study., Methods: Men with metastatic castration-sensitive prostate cancer randomly (1:1) received 240 mg apalutamide + androgen deprivation therapy or matching placebo + androgen deprivation therapy. The primary efficacy endpoints were radiographic progression-free survival and overall survival. Secondary efficacy endpoints were time to cytotoxic chemotherapy, pain progression, chronic opioid use, and skeletal-related events. Safety was also assessed., Results: Of the 1052 patients included in the TITAN study, 51 (4.85%) were Japanese (apalutamide group, n = 28; placebo group, n = 23). In all, 81.8% of patients in the apalutamide and 71.8% in the placebo group did not experience radiographic progression or death, and the hazard ratio for radiographic progression-free survival favored treatment with apalutamide (hazard ratio 0.712, 95% confidence interval 0.205-2.466; P = 0.59). At 24 months, 85.7% of patients in the apalutamide group and 81.5% in the placebo group were alive, and the hazard ratio for overall survival favored apalutamide (hazard ratio 0.840, 95% confidence interval 0.210-3.361; P = 0.805). In the interim analysis, the median radiographic progression-free survival and overall survival were not reached in the apalutamide group and time to cytotoxic chemotherapy was delayed following apalutamide treatment. The safety profile of apalutamide in the Japanese subpopulation was comparable with that of the global population, except for skin rash., Conclusions: The results of the present analyses suggest that apalutamide + androgen deprivation therapy in Japanese patients had favorable efficacy compared with androgen deprivation therapy alone, and these findings are comparable to those in the overall population. Apalutamide + androgen deprivation therapy can be considered as one of the therapeutic options for a broad spectrum of metastatic castration-sensitive prostate cancer regardless of prior treatment and disease extent in Japanese patients., (© 2020 The Japanese Urological Association.)
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- 2021
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28. A randomized phase III trial of personalized peptide vaccination for castration‑resistant prostate cancer progressing after docetaxel.
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Noguchi M, Fujimoto K, Arai G, Uemura H, Hashine K, Matsumoto H, Fukasawa S, Kohjimoto Y, Nakatsu H, Takenaka A, Fujisawa M, Uemura H, Naito S, Egawa S, Fujimoto H, Hinotsu S, and Itoh K
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- Aged, Aged, 80 and over, Double-Blind Method, Humans, Male, Middle Aged, Prostatic Neoplasms, Castration-Resistant mortality, Vaccines, Subunit therapeutic use, Cancer Vaccines therapeutic use, Docetaxel therapeutic use, HLA-A24 Antigen analysis, Prostatic Neoplasms, Castration-Resistant therapy, Vaccination
- Abstract
First‑line chemotherapy for men with metastatic castration‑resistant prostate cancer (mCRPC) has been employed to improve overall survival (OS) and progression‑free survival (PFS). However, several new agents for CRPC after first‑line chemotherapy prolonged survival by only a few months. To develop a new treatment modality, we conducted a phase III randomized trial of personalized peptide vaccination (PPV) for human leukocyte antigen (HLA)‑A24‑positive patients with castration‑resistant prostate cancer (CRPC) for whom docetaxel chemotherapy failed. This randomized, double‑blind, placebo‑controlled, phase III trial was carried out at 68 medical centers in Japan. Patients were randomly assigned at a 2:1 ratio to receive PPV or placebo. Four of 12 warehouse peptides selected based on pre‑existing peptide‑specific immunoglobulin G levels or the corresponding placebo were subcutaneously injected in 6 doses weekly and then bi‑weekly following the maximum of 30 doses until disease progression. The primary end‑point was overall survival (OS). Efficacy analyses were performed by the full analysis set. Between August 2013 and April 2016, 310 patients were randomly assigned, and 306 patients were analyzed. Baseline characteristics were balanced between groups. The estimated median OS was 16.1 months [95% confidence interval (CI), 13‑18.2] with PPV and 16.9 months (95% CI, 13.1‑20.4) with placebo [hazard ratio (HR), 1.04, 95% CI, 0.80‑1.37; P=0.77]. Grade ≥3 adverse events were observed in 41% of both groups. The analysis of treatment arm effects among subgroups revealed lower HRs for OS in favor of the PPV arm in patients with <64% neutrophils (HR, 0.55, 95% CI, 0.33‑0.93; P=0.03) or ≥26% lymphocytes (HR, 0.70, 95% CI, 0.52‑0.92; P=0.02) at baseline. PPV did not prolong OS in HLA‑A24‑positive patients with CRPC progressing after docetaxel chemotherapy. Subgroup analysis suggested that the patients with a lower proportion of neutrophils or a higher proportion of lymphocytes at baseline can receive survival benefits from PPV treatment.
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- 2021
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29. Efficacy and safety of apalutamide in Japanese patients with nonmetastatic castration-resistant prostate cancer: a subgroup analysis of a randomized, double-blind, placebo-controlled, Phase-3 study.
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Uemura H, Satoh T, Tsumura H, Arai G, Imanaka K, Shibayama K, Fujii K, Rooney B, Lopez-Gitlitz A, Espina B, Perez-Ruixo C, Small EJ, and Smith M
- Abstract
Background: In the global Phase-3 Selective Prostate Androgen Receptor Targeting with ARN-509 study, apalutamide plus ongoing androgen deprivation therapy (ADT) significantly increased metastasis-free survival (MFS) and improved other clinical outcomes in men with nonmetastatic castration-resistant prostate cancer (nm-CRPC) who were at high risk of developing metastases. In this subpopulation analysis of Selective Prostate Androgen Receptor Targeting with ARN-509 study, the efficacy and safety of apalutamide plus ADT were evaluated in Japanese patients with nm-CRPC., Methods: The primary efficacy end point was MFS. Secondary efficacy end points were time to metastasis, progression-free survival, symptomatic progression, initiation of cytotoxic chemotherapy, and overall survival. Safety and pharmacokinetic parameters were also assessed., Results: Fifty-five Japanese patients with ongoing ADT were randomized (apalutamide: n = 34, placebo: n = 21). Median treatment duration was 5.7 months in the apalutamide group and 11.0 months in the placebo group. Median MFS was not reached in the apalutamide group (95% confidence interval: 10.97, not estimable) and was 18.23 months (95% confidence interval: 11.04, 18.50) in the placebo group. Secondary end points were improved in the apalutamide group. The safety profile of apalutamide with ADT was comparable with the global population, and no new safety signals were identified in this Japanese subpopulation. Although, apalutamide exposure tended to be higher in the Japanese subpopulation compared with the non-Japanese population, this was likely to be explained by body weight and considered not clinically meaningful., Conclusion: In the Japanese subpopulation, treatment with apalutamide with ADT resulted in favorable efficacy outcomes with comparable benefit-risk profile to the global population with nm-CRPC who are at high-risk of developing metastases., Competing Interests: H.U. reports receiving research grants from Janssen Pharmaceutical (during the conduct of the study) and lecture fees/subsidies from Bayer Yakuhin, Limited, Takeda Pharmaceutical Company Limited, AstraZeneca K.K., TAIHO Pharmaceutical Company Limited,. Astellas Pharma Inc. and Pfizer Inc. T.S. reports receiving research grants from Konica Minolta, Inc., educational lecture fee from Bayer AG, AstraZeneca K. K., Janssen Pharmaceutical K.K., Astellas Pharma Inc, Nihon Medi-Physics Co., Ltd. and Takeda Pharmaceutical Company Limited. M.S. reports receiving consulting fees from Astellas Pharma Inc. and Bayer Yakuhin, Limited. H.Tsumura. reporst receiving research grants from Janssen Pharmaceutical and Astellas Pharma Inc. G.A. reports receiving consulting fee from Janssen Pharmaceutical and lecture fee from Janssen Pharmaceutical, AstraZeneca K.K, Takeda Pharmaceutical Company Limited, Astellas Pharma Inc., Pfizer Japan Inc., Novartis Pharmaceutical, and Bayer Yakuhin Limited. E.J.S. reports receiving honoraria for lectures from Janssena and is a member of the consulting or advisory board of Janssen and Fortis; holds stocks for Fortis Therapeutics and Harpoon Therapeutics. The following authors declare a conflict of interest on the basis that they are full-time employees of Janssen Pharmaceutical K.K. of Johnson & Johnson: K. I., K.S., and K.F.; and Janssen Research and Development: Youyi Shu, B.R., A.L.-G., B.E., and C.P.-R.. The material presented in this article reflects authors own personal views and should not be interpreted as being representative of the views of their employers or institutions., (© 2020 Asian Pacific Prostate Society. Published by Elsevier B.V.)
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- 2020
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30. Intravascular papillary endothelial hyperplasia in the mandible: a case report.
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Eguchi T, Nakaoka K, Basugi A, Arai G, and Hamada Y
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- Diagnosis, Differential, Endothelial Cells, Humans, Hyperplasia pathology, Mandible diagnostic imaging, Mandible surgery, Endothelium, Vascular, Vascular Neoplasms pathology
- Abstract
Intravascular papillary endothelial hyperplasia (IPEH) is histopathologically characterized by papillary proliferation of vascular endothelial cells. IPEH in the mandible is very rare, such that only four affected patients have been described in the English-language medical literature. Thus, there is a poor understanding of the pathogenesis and clinical features of IPEH in the mandible. This case report describes a patient with IPEH in the mandible who had a history of repeated trauma involving the mandible due to boxing-related and baseball-related injuries. Imaging examinations had diagnostic limitations, in that they showed a multilocular radiolucency suggestive of a simple bone cyst of the mandible, whereas intraoperative findings revealed a fluid-free unicystic cavity lined by a thin red membrane. Thus, histopathologic examinations were necessary for definitive diagnosis. The specimen demonstrated a spongy structure consisting of many small papillary fibrous tissues, lined by a typical monolayer endothelium that expressed CD34, but did not express D2-40 or AE1/AE3. Moreover, the Ki-67 labeling index was <1%. Thus, the lesion was identified as intraosseous IPEH in the mandible. Although the pathogenesis of IPEH has been controversial, our findings in this case suggest that pathogenesis of IPEH may be related to a history of trauma.
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- 2020
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31. Oncological outcomes for patients with locally advanced prostate cancer treated with neoadjuvant endocrine and external-beam radiation therapy followed by adjuvant continuous/intermittent endocrine therapy in an open-label, randomized, phase 3 trial.
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Ito K, Kobayashi M, Komiyama M, Naito S, Nishimura K, Yonese J, Hashine K, Saito S, Arai G, Shinohara M, Masumori N, Shimizu N, Satoh T, Yamauchi A, Tochigi T, Takezawa Y, Fujimoto H, Yokomizo A, Kakimoto KI, Fukui I, Karasawa K, Tsukamoto T, Nozaki M, Hasumi M, Ishiyama H, Ohtani M, Kuwahara M, Harada M, Ohashi Y, Kotake T, Kakizoe T, Suzuki K, and Yamanaka H
- Subjects
- Aged, Androgen Antagonists adverse effects, Combined Modality Therapy, Disease-Free Survival, Humans, Male, Middle Aged, Neoplasm Recurrence, Local pathology, Neoplasm Recurrence, Local radiotherapy, Proportional Hazards Models, Prostate-Specific Antigen blood, Prostatic Neoplasms blood, Prostatic Neoplasms pathology, Prostatic Neoplasms radiotherapy, Radiotherapy, Conformal adverse effects, Treatment Outcome, Androgen Antagonists administration & dosage, Neoadjuvant Therapy adverse effects, Neoplasm Recurrence, Local drug therapy, Prostatic Neoplasms drug therapy
- Abstract
Background: To date, research has not determined the optimal procedure for adjuvant androgen deprivation therapy (ADT) in patients with locally advanced prostate cancer (PCa) treated for 6 months with neoadjuvant ADT and external-beam radiation therapy (EBRT)., Methods: A multicenter, randomized, phase 3 trial enrolled 303 patients with locally advanced PCa between 2001 and 2006. Participants were treated with neoadjuvant ADT for 6 months. Then, 280 patients whose prostate-specific antigen levels were less than pretreatment levels and less than 10 ng/mL were randomized. All 280 participants were treated with 72 Gy of EBRT in combination with adjuvant ADT for 8 months. Thereafter, participants were assigned to long-term ADT (5 years in all; arm 1) or intermittent ADT (arm 2). The primary endpoint was modified biochemical relapse-free survival (bRFS) with respect to nonmetastatic castration-resistant prostate cancer (nmCRPC) progression, clinical relapse, or any cause of death., Results: The median follow-up time after randomization was 8.2 years. Among the 136 and 144 men assigned to trial arms 1 and 2, respectively, 24 and 30 progressed to nmCRPC or clinical relapse, and 5 and 6 died of PCa. The 5-year modified bRFS rates were 84.8% and 82.8% in trial arms 1 and 2, respectively (hazard ratio, 1.132; 95% confidence interval, 0.744-1.722)., Conclusions: Although modified bRFS data did not demonstrate noninferiority for arm 2, intermittent adjuvant ADT after EBRT with 14 months of neoadjuvant and short-term adjuvant ADT is a promising treatment strategy, especially in a population of responders after 6 months of ADT for locally advanced PCa., (© 2020 American Cancer Society.)
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- 2020
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32. Spontaneous theory of mind in adults with attention-deficit/hyperactivity disorder.
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Hayashi W, Arai G, Uno H, Saga N, Ikuse D, Takashio O, and Iwanami A
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- Adult, Attention Deficit Disorder with Hyperactivity diagnosis, Cognition physiology, Cross-Sectional Studies, Female, Humans, Male, Photic Stimulation methods, Young Adult, Anticipation, Psychological physiology, Attention Deficit Disorder with Hyperactivity psychology, Fixation, Ocular physiology, Theory of Mind physiology
- Abstract
Spontaneous theory of mind (ToM) is an unconscious and automatic understanding of others' mental states. Recently, individuals with attention-deficit hyperactivity disorder (ADHD) have been shown to have social and communication difficulties, and ToM in ADHD has come under scrutiny. Although some studies have employed explicit ToM tasks to this end with contradictory results, none, to our knowledge, has investigated spontaneous ToM in individuals with ADHD. Therefore, we performed this study to examine implicit mentalizing in adults with ADHD using the anticipatory-looking paradigm designed by Senju et al. (2009) with a sample of 24 adults with ADHD and 18 neurotypical adults. The total fixation times to three areas of interest, i.e., the actor and the false-belief congruent and incongruent sides of the scene were measured. We found that neither group showed looking bias toward either the false-belief congruent or incongruent side. We interpret that this similar gaze pattern and the absence of looking bias to the false-belief incongruent side in both groups is indicative of intact implicit ToM in adults with ADHD. Adults with ADHD looked significantly less at the actor than did neurotypical individuals, possibly due to inattention and further experimental modifications should be considered., (Copyright © 2020 Elsevier B.V. All rights reserved.)
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- 2020
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33. Mixed 20-peptide cancer vaccine in combination with docetaxel and dexamethasone for castration-resistant prostate cancer: a randomized phase II trial.
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Noguchi M, Arai G, Egawa S, Ohyama C, Naito S, Matsumoto K, Uemura H, Nakagawa M, Nasu Y, Eto M, Suekane S, Sasada T, Shichijo S, Yamada A, Kakuma T, and Itoh K
- Subjects
- Administration, Oral, Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols adverse effects, Cancer Vaccines adverse effects, Cancer Vaccines immunology, Combined Modality Therapy adverse effects, Combined Modality Therapy methods, Dexamethasone administration & dosage, Dexamethasone adverse effects, Docetaxel administration & dosage, Docetaxel adverse effects, Double-Blind Method, Drug Administration Schedule, Humans, Infusions, Intravenous, Injections, Subcutaneous, Male, Middle Aged, Progression-Free Survival, Prostatic Neoplasms, Castration-Resistant blood, Prostatic Neoplasms, Castration-Resistant immunology, Prostatic Neoplasms, Castration-Resistant mortality, Response Evaluation Criteria in Solid Tumors, Vaccines, Subunit administration & dosage, Vaccines, Subunit adverse effects, Vaccines, Subunit immunology, Antineoplastic Combined Chemotherapy Protocols administration & dosage, Cancer Vaccines administration & dosage, Kallikreins blood, Prostate-Specific Antigen blood, Prostatic Neoplasms, Castration-Resistant therapy, T-Lymphocytes, Cytotoxic immunology
- Abstract
A novel cancer vaccine consisting of 20 mixed peptides (KRM-20) was designed to induce cytotoxic T lymphocytes (CTL) against twelve different tumor-associated antigens. The aim of this phase II trial was to examine whether KRM-20 in combination with docetaxel and dexamethasone enhances the antitumor effects in patients with castration-resistant prostate cancer (CRPC). In this double-blind, placebo-controlled, randomized phase II study, we enrolled chemotherapy-naïve patients with CRPC from ten medical centers in Japan. Eligible patients were randomly assigned 1:1 centrally to receive either KRM-20 combined with docetaxel and dexamethasone (n = 25) or placebo with docetaxel and dexamethasone (n = 26). The primary endpoint was the difference in prostate-specific antigen (PSA) decline between each treatment. The rates of > 50% PSA decline in the two arms were similar (56.5% versus 53.8%; P = 0.851). Human leukocyte antigen (HLA)-matched peptide-specific immunoglobulin G (P = 0.018) and CTL (P = 0.007) responses in the KRM-20 arm significantly increased after treatment. The addition of KRM-20 did not increase toxicity. There were no between-group differences in progression-free or overall survival (OS). The addition of KRM-20 was safe, and similar PSA decline and HLA-matched peptide-specific CTL and IgG responses increased in combination with docetaxel and dexamethasone in CRPC patients. Subgroup analysis suggested that this treatment is favorable for CRPC patients with ≥ 26% lymphocytes or PSA levels of < 11.2 ng/ml, but further clinical trials comparing OS are required.
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- 2020
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34. Diagnostic Impacts of Clinical Laboratory Based p2PSA Indexes on any Grade, Gleason Grade Group 2 or Greater, or 3 or Greater Prostate Cancer and Prostate Specific Antigen below 10 ng/ml.
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Ito K, Yokomizo A, Tokunaga S, Arai G, Sugimoto M, Akakura K, Hasumi H, Sakai H, Ouraji A, Oki R, Kashiwagi E, Kobori Y, Hirama H, Kitoh H, Uemura H, Hakariya T, and Suzuki K
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- Aged, Biopsy, Diagnosis, Differential, Humans, Male, Middle Aged, Neoplasm Grading, Prospective Studies, Prostatic Neoplasms blood, Prostatic Neoplasms pathology, Protein Precursors, Biomarkers, Tumor blood, Prostate-Specific Antigen blood, Prostatic Neoplasms diagnosis
- Abstract
Purpose: The PROPHET (Prostate Cancer: Prostate Health Index Trial) is a prospective study to clarify the diagnostic impact of laboratory based and prostate volume adjusted p2PSA ([-2] proenzyme prostate specific antigen) related indexes on prostate cancer and clinically significant prostate cancer with prostate specific antigen less than 10 ng/ml., Materials and Methods: Between April 2015 and March 2017, 421 men 50 to 79 years old in the prostate specific antigen range above age specific cutoffs and below 10 ng/ml were registered in the PROPHET. We investigated the diagnostic impacts of various clinical laboratory based free prostate specific antigen related and p2PSA related indexes on any grade and high Gleason grade group prostate cancer., Results: Of the 363 eligible participants 179, 141 and 80 were diagnosed with any grade, and Gleason Grade Group 2-5 and 3-5 prostate cancer, respectively. The AUC-ROCs distinguishing nonprostate cancer vs prostate cancer, nonprostate cancer plus low Gleason Grade Group and low volume vs remaining prostate cancer with a higher Gleason Grade group or a higher volume on the PHI (Prostate Health Index) were significantly superior to the AUC-ROCs of prostate specific antigen and free-to-total prostate specific antigen. At 90% sensitivity in all investigated p2PSA related indexes the false-positive rate was superior to that of prostate specific antigen and free-to-total prostate specific antigen in any group comparison in terms of the Gleason Grade Group and positive biopsy cores. In 35% to 42% of men without prostate cancer and/or those with less aggressive prostate cancer the PHI would avoid unnecessary biopsy., Conclusions: Laboratory based p2PSA related indexes were significantly superior for detecting clinically significant prostate cancer compared to free-to-total prostate specific antigen. The indexes those would avoid up to 42% of prostate biopsies in men without aggressive cancer while maintaining 90% sensitivity.
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- 2020
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35. Clinical Characteristics of Women with ADHD in Japan.
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Hayashi W, Suzuki H, Saga N, Arai G, Igarashi R, Tokumasu T, Ota H, Yamada H, Takashio O, and Iwanami A
- Abstract
Purpose: Although gender differences have been reported in various aspects of adult attention-deficit hyperactivity disorder (ADHD), such as prevalence, comorbidities, and social functioning, there have been few such studies conducted in Japan. Our research investigated gender differences in sociodemographic and clinical characteristics of adults with ADHD in a Japanese clinical sample. Due to unique Japanese cultural ideals and expectations of women's behavior that are in opposition to ADHD symptoms, we hypothesized that women with ADHD experience more difficulties and present more dysfunctions than men. We tested the following hypotheses: first, women with ADHD have more comorbidities than men with ADHD; second, women with ADHD experience more social hardships than men, such as having less full-time employment and being more likely to be divorced., Patients and Methods: The subjects were 335 outpatients with a DSM-5 ADHD diagnosis, who visited our ADHD specialty clinic at Showa University Karasuyama Hospital in central Tokyo between April 2015 and March 2016. Sociodemographic and clinical characteristics were collected, and gender differences were compared., Results: Results fully supported our hypotheses: women had a significantly higher psychiatric comorbidity rate, were significantly less likely to be a full-time employee, and were significantly more likely to be divorced than men with ADHD., Conclusion: Consistent with research in other countries, women with ADHD have greater impairments than men with ADHD in Japan. The importance of understanding gender differences of ADHD-diagnosed adults within a sociocultural context is highlighted., Competing Interests: The authors report no conflicts of interest in this work., (© 2019 Hayashi et al.)
- Published
- 2019
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36. [Sperm Cryopreservation for a Gender Identity Disorder Patient Prior to Sex Reassignment Surgery : A Case Report].
- Author
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Osaka A, Kobori Y, Arai G, and Okada H
- Subjects
- Adult, Cryopreservation, Female, Gender Identity, Humans, Japan, Male, Spermatozoa, Gender Dysphoria, Semen Preservation, Gender-Affirming Surgery, Transsexualism
- Abstract
We describe the first case of a 25-year-old patient with gender identity disorder (GID) who underwent cryopreservation of sperm prior to male-to-female (MTF) sex reassignment surgery in Japan. The patient wanted to freeze sperm to keep open the option of conceiving a child in the future. The ethics committee of our institution discussed the case and officially approved cryopreservation of sperm before sex reassignment surgery. Compared with foreign countries, sperm cryopreservation of GID is not recognized and guidelines have yet been published in Japan. Here, we report sperm cryopreservation for MTF before sex reassignment surgery.
- Published
- 2018
- Full Text
- View/download PDF
37. Intense water-window soft x-ray emission by spectral control using dual laser pulses.
- Author
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Arai G, Hara H, Hatano T, Ejima T, Jiang W, Ohashi H, Namba S, Sunahara A, Sasaki A, Nishikino M, O'Sullivan G, and Higashiguchi T
- Abstract
We demonstrate intense emission in the water-window soft x-ray spectral region by controlling the spectral behavior through changing the balance between emissivity and self-absorption in an expanding plasma. The number of photons obtained from a dual laser irradiated target with a 150-ps pre-pulse was maximized at 3.8 × 10
14 photons/sr in λ = 2.34 - 4.38 nm at a pulse separation time of 7 - 10 ns. Enhancement of the number of photons is attributed to efficient coupling with the main laser pulse while maintaining a tiny source size.- Published
- 2018
- Full Text
- View/download PDF
38. Testicular adrenal rest tumor without congenital adrenal hyperplasia: A rare case.
- Author
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Osaka A, Ide H, Ono Y, Arai G, Ueda Y, and Okada H
- Subjects
- Adrenal Rest Tumor pathology, Adrenal Rest Tumor surgery, Child, Humans, Male, Organ Sparing Treatments methods, Testicular Neoplasms pathology, Testicular Neoplasms surgery, Testis diagnostic imaging, Testis pathology, Testis surgery, Tomography, X-Ray Computed, Treatment Outcome, Ultrasonography, Adrenal Glands diagnostic imaging, Adrenal Rest Tumor diagnosis, Testicular Neoplasms diagnosis, Urologic Surgical Procedures, Male methods
- Published
- 2018
- Full Text
- View/download PDF
39. Pyoderma gangrenosum after radical prostatectomy: case report.
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Osaka A, Ide H, Ban S, Takimoto T, Aoki K, Kobori Y, Tokumoto T, Arai G, Soh S, Ueda Y, and Okada H
- Abstract
Pyoderma gangrenosum (PG) is a skin disease characterized by an unknown neutrophilic infiltration in dermis and a nonbacterial destructive ulcer. Post-operative PG is an extremely rare type that occurs around surgical sites during the immediate post-operative period. It is usually diagnosed as surgical site infection at the time of presentation. The condition rapidly worsens despite antibiotic treatment and debridement. We report on a case of post-operative PG in a 64-year-old man after radical prostatectomy. Following the operation, redness and pus from surgical site rapidly progress although repeated antibiotic therapy and debridement were performed. Although the patient received appropriate debridement and broad-spectrum antibiotic treatment, the ulcerative lesion spread surrounding drain region and the condition of the skin region deteriorated. The diagnosis of PG was made by a skin biopsy that presented only neutrophilic invasion in the dermis without vasculitis, tumor, or malignancy. Finally, the patient died of lesion progression in whole body and multiple organ dysfunction. Considering PG along with ulcers, wounds, and post-operative complications is critical for prompt diagnosis and proper treatment., Competing Interests: All authors declare that they have no conflict of interest.The case report approval was obtained from the Hospital Research Ethics Board (Approval Number: 1763).
- Published
- 2018
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40. Selection of target elements for laser-produced plasma soft x-ray sources.
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Tamura T, Arai G, Kondo Y, Hara H, Hatano T, Ejima T, Jiang W, Suzuki C, O'Sullivan G, and Higashiguchi T
- Abstract
We demonstrated the upper limitation to the number of shots, i.e., target lifetime, together with the number of photons emitted in the water-window soft x-ray spectral region from a number of targets used as sources in this spectral region, for multi-shot irradiation at the same position on the target surface. The spectra involved result from unresolved transition arrays originating from n=3-n=4 transitions in medium-Z element plasmas and from n=4-n=4 transitions originating in high-Z plasmas. The output flux was maintained for the highest number of shots in the case of the high melting point element molybdenum, and the total output in the water window was 7.7×10
13 photons/sr at a laser power density of 1.2×1014 W/cm2 .- Published
- 2018
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- View/download PDF
41. The effect of visual cues on performance in the ultimatum game in individuals with autism spectrum disorder.
- Author
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Ikuse D, Tani M, Itahashi T, Yamada H, Ohta H, Morita T, Arai G, Saga N, Tokumasu T, Ohta M, Sato A, and Iwanami A
- Subjects
- Adult, Female, Humans, Male, Middle Aged, Reaction Time, Trust, Young Adult, Altruism, Autism Spectrum Disorder psychology, Cues, Games, Recreational psychology, Photic Stimulation methods
- Abstract
The Ultimatum Game (UG) allows for the assessment of altruistic behavior as well as the perception of fairness. We examined the effects of visual social cues (gaze of others), factors associated with autism, and trust on UG performance in typical adults (TAs) and individuals with autism spectrum disorder (ASD). We hypothesized that individuals with ASD would be less affected by visual social cues than TAs. We recruited 30 TAs and 30 individuals with ASD. Participants completed 30 trials of the UG, during which the visual background was altered to include either stylized eyespots, flowers, or a neutral background. Reaction times and money distributed in each condition were recorded. Reaction times did not vary among background conditions in either group, although individuals with ASD responded more slowly overall. TAs distributed less money in the neutral background and flowers conditions than in the eyespots condition, while no significant differences in the amount of money distributed were observed among background conditions for individuals with ASD, who also distributed more money overall than TAs. Such findings may be due to decreased susceptibility to social cues among individuals with ASD., (Copyright © 2017 Elsevier B.V. All rights reserved.)
- Published
- 2018
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42. [IV. Psycho-Oncology in Patients with Metastatic Brain Tumor].
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Onishi H, Tanahashi I, Ishida M, and Arai G
- Subjects
- Brain Neoplasms secondary, Brain Neoplasms therapy, Decision Making, Humans, Patient Care Team, Brain Neoplasms psychology
- Published
- 2017
43. A questionnaire survey on attitude toward sperm cryopreservation among hematologists in Japan.
- Author
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Kobayashi T, Shin T, Nishio K, Shimomura Y, Iwahata T, Suzuki K, Miyata A, Kobori Y, Arai G, and Okada H
- Subjects
- Adolescent, Adult, Antineoplastic Agents therapeutic use, Hematology, Humans, Japan, Male, Quality of Life, Workforce, Young Adult, Cryopreservation methods, Fertility Preservation methods, Spermatozoa cytology, Surveys and Questionnaires
- Abstract
Advances in multimodal treatment have led to dramatic improvement in cancer treatment outcomes. It is now necessary to consider cancer patients' holistic quality of life. Fertility preservation is the top concern for cancer survivors of reproductive age. Sperm cryopreservation before treatment is recommended for postpubescent men, but many patients lose fertility without having been informed about options for fertility preservation. To determine how sperm cryopreservation is perceived and practiced in Japan, we surveyed hematologists who often treat young males. A questionnaire about sperm cryopreservation was sent to 45 major hematology institutions. A total of 22 institutions responded before the deadline. All institutions but one responded that they felt sperm cryopreservation is necessary. Only 15 institutions responded that they inform patients about sperm cryopreservation, and 12 institutions responded that they perform sperm cryopreservation before chemotherapy. A total of 213 young males started their first course of chemotherapy during the survey period, of whom 61 (28.6%) had their sperm cryopreserved. Although almost all hematologists stated that sperm cryopreservation is necessary for fertility preservation, not all institutions informed patients about it. Our findings indicate that, to promote fertility preservation in Japan, it will be necessary to systematize sperm cryopreservation and build inter-hospital networks.
- Published
- 2017
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44. Effects of a supplement combining Pycnogenol ® and l-arginine aspartate on lower urinary dysfunction compared with saw palmetto extract.
- Author
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Yagi H, Sato R, Nishio K, Arai G, Soh S, and Okada H
- Abstract
Objectives: Lower urinary tract symptoms (LUTS) and sexual dysfunction (SDys) are common problems that affect quality of life (QOL) in elderly men. In addition to prescribed drugs, many over-the-counter medications including supplements are used to treat QOL diseases. Phosphodiesterase inhibitors are reported to be effective for both LUTS and SDys by increasing nitric oxide levels. French maritime pine bark extract Pycnogenol
® , which is a potent nitric oxide donor, is reported to be effective for SDys. However, no reports have been published on whether it ameliorates LUTS., Design: Open-labeled, randomized study. The effects of two supplements, Nokogiriyashi EX® containing 160 mg saw palmetto (SP) extract per tablet and Edicare® containing 10 mg of Pycnogenol® , 115 mg of l-arginine and 92 mg of aspartate (PAA) per tablet on International Prostate Symptom Score (IPSS), IPSS-QOL, Overactive Bladder Symptom Score (OABSS), International Index of Erectile Function 5 (IIEF5), Consultation on Incontinence Questionnaire-Short Form (ICIQ-SF), urinary 8-OHdG and uroflowmetry (UFM) of total 40 men with LUTS and SDys were examined., Results: 19 subjects were instructed to take two tablets of SP, on the other 20 were on four tablets of PAA for 16 weeks. IPSS and IPSS-QOL showed statistically significant improvements in both groups. OABSS and IIEF5 were significantly improved in the PAA group. Conversely, ICIQ-SF, 8-OHdG and UFM did not change in either group., Conclusions: PAA might be an effective therapeutic alternative for elderly patients with LUTS and SDys.- Published
- 2016
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45. [Androgen deprivation therapy for prostate cancer: adverse effects and their management].
- Author
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Arai G and Okada H
- Subjects
- Androgen Antagonists therapeutic use, Drug-Related Side Effects and Adverse Reactions, Humans, Male, Androgen Antagonists adverse effects, Prostatic Neoplasms drug therapy
- Published
- 2016
46. An Open-Label, Randomized Phase II Trial of Personalized Peptide Vaccination in Patients with Bladder Cancer that Progressed after Platinum-Based Chemotherapy.
- Author
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Noguchi M, Matsumoto K, Uemura H, Arai G, Eto M, Naito S, Ohyama C, Nasu Y, Tanaka M, Moriya F, Suekane S, Matsueda S, Komatsu N, Sasada T, Yamada A, Kakuma T, and Itoh K
- Subjects
- Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Cancer Vaccines administration & dosage, Cancer Vaccines adverse effects, Combined Modality Therapy, Disease Progression, Drug Resistance, Neoplasm, Female, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Neoplasm Metastasis, Platinum administration & dosage, Retreatment, Treatment Outcome, Urinary Bladder Neoplasms mortality, Urinary Bladder Neoplasms pathology, Vaccines, Subunit administration & dosage, Vaccines, Subunit adverse effects, Cancer Vaccines immunology, Urinary Bladder Neoplasms immunology, Urinary Bladder Neoplasms therapy, Vaccines, Subunit immunology
- Abstract
Purpose: The prognosis of platinum-based chemotherapy-resistant metastatic urothelial cancer of the bladder remains poor. Personalized selection of the right peptides for each patient could be a novel approach for a cancer vaccine to boost anticancer immunity., Experimental Design: In this randomized, open-label, phase II study, patients ages ≥18 years with progressive bladder cancer after first-line platinum-based chemotherapy were randomly assigned (1:1) to receive personalized peptide vaccination (PPV) plus best supportive care (BSC) or BSC. PPV treatment used a maximum of four peptides chosen from 31 candidate peptides according to human leukocyte antigen types and peptide-reactive IgG titers, for 12 s.c. injections (8 injections, weekly; 4 injections, bi-weekly). The primary endpoint was progression-free survival (PFS). Secondary endpoints were overall survival (OS), immune response, and toxicity., Results: Eighty patients were randomly assigned to receive either PPV plus BSC (n = 39) or BSC (n = 41). No significant improvement in PFS was noted [HR, 0.7; 95% confidence interval (CI), 0.4-1.2, P = 0.17]. For the secondary endpoints, PPV plus BSC significantly prolonged OS compared with BSC (HR, 0.58; 95% CI, 0.34-0.99, P = 0.049), with median OS of 7.9 months (95% CI, 3.5-12.0) in the PPV plus BSC and 4.1 months (95% CI, 2.8-6.9) in the BSC. PPV treatment was well tolerated, without serious adverse drug reactions., Conclusions: PPV could not prolong PFS, but OS appeared to be improved with low toxicity and immune responses. Further large-scale, randomized trials are needed to confirm these results., (©2015 American Association for Cancer Research.)
- Published
- 2016
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47. Improvement of seminal quality and sexual function of men with oligoasthenoteratozoospermia syndrome following supplementation with L-arginine and Pycnogenol®.
- Author
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Kobori Y, Suzuki K, Iwahata T, Shin T, Sadaoka Y, Sato R, Nishio K, Yagi H, Arai G, Soh S, Okada H, Strong JM, and Rohdewald P
- Subjects
- Adult, Drug Combinations, Humans, Male, Middle Aged, Plant Extracts therapeutic use, Treatment Outcome, Antioxidants therapeutic use, Arginine therapeutic use, Asthenozoospermia drug therapy, Erectile Dysfunction drug therapy, Flavonoids therapeutic use, Spermatozoa drug effects
- Abstract
We evaluated the effectiveness of antioxidant co-supplementation therapy using Larginine and Pycnogenol(®) in Japanese men with oligoasthenozoospermia and mild erectile dysfunction (ED). A total of forty-seven adult males with oligoasthenoteratozoospermia syndrome (OAT) were eligible for enrollment. The effectiveness of supplementation with a combination of L-arginine 690 mg and French maritime pine bark extract (Pycnogenol(®)) 60mg for OAT and ED was investigated. The sperm concentration was enhanced significantly after treatment 2 and 4 months (11.79 ± 9.86 to 21.22 ± 28.17 and 20.15 ± 23.99 × 106/ml). Significant improvements in the International Index of Erectile Function (IIEF) were observed in the total score of IIEF (57.69 ± 11.04 to 59.43 ± 12.57) and domain of Orgasmic Function (9.01 ± 1.92 to 9.34 ± 1.66) after 4 months of treatment. L-arginine acts to increase the production of nitric oxide and Pycnogenol(®) activates the endothelial nitric oxide synthase and it is a potent antioxidant and inhibitor of inducible nitric oxide synthase. This study suggests that the combination of Pycnogenol(®) and L-arginine (Edicare(®)) is helpful for infertile men to ameliorate simultaneously quality of sperms as well as erectile functions.
- Published
- 2015
- Full Text
- View/download PDF
48. Induction of spermatogenesis by rhFSH for azoospermia due to spermatogenic dysfunction with maturation arrest: five case series.
- Author
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Kobori Y, Suzuki K, Iwahata T, Shin T, Sato R, Nishio K, Yagi H, Arai G, Soh S, and Okada H
- Subjects
- Humans, Male, Recombinant Proteins therapeutic use, Azoospermia drug therapy, Follicle Stimulating Hormone therapeutic use, Spermatogenesis drug effects
- Abstract
When sperm cannot be retrieved from the testes of patients with azoospermia due to spermatogenic dysfunction (ASD), there is no rational way for the patient to become a biological father. We investigated the possibility of inducing spermatogenesis in such patients by hormonal therapy with recombinant human follicle-stimulating hormone (rhFSH) alone. Twenty-six ASD patients who could not obtain spermatozoa by microdissection testicular sperm extraction (micro-TESE) were confirmed to have arrested spermatogenesis at the late stage of maturation arrest. They were subsequently treated with 75-150 IU two times/week rhFSH alone for 12 months. The primary endpoint was the appearance of sperm in ejaculate, and we followed the patients to determine the outcome of inseminating their partners. After rhFSH treatment, mature spermatozoa were found in the ejaculate in five of 26 (19.2%) patients, all of whom showed histology of non-uniform type maturation arrest. Intracytoplasmic sperm injection of the mature spermatozoa resulted in two ongoing clinical pregnancies (insemination success rate, 40.0%). Recombinant human follicle-stimulating hormone treatment can be used as an advanced assisted reproductive technology to improve spermatogenesis in some azoospermic patients with maturation arrest of spermatogenesis and is a potential treatment option after unsuccessful micro-TESE.
- Published
- 2015
- Full Text
- View/download PDF
49. Clinical efficacy and tolerability of two Japanese traditional herbal medicines, Hachimi-jio-gan and Gosha-jinki-gan, for lower urinary tract symptoms with cold sensitivity.
- Author
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Yagi H, Sato R, Nishio K, Arai G, Soh S, and Okada H
- Abstract
We evaluated the efficacy and tolerability of Hachimi-jio-gan (HJG; bā wèi dì huáng wán) and Gosha-jinki-gan (GJG; jì shēng shèn qì wán), two traditional Japanese medicines, in 60 patients with lower urinary tract symptoms (LUTS) having cold sensitivity unresponsive to α1-blockers or antimuscarinic drugs. All patients received a mixture of HJG or GJG for 12 weeks in addition to α1-blockers or antimuscarinic drugs as add-on therapy. International Prostate Symptom Score, International Prostate Symptom Score-Quality of Life, Benign Prostatic Hyperplasia Impact Index, and the number of nocturnal voids were statistically much improved. However, there was no change in maximal urinary flow rate and post-void residual urine. Urinary 8-hydroxy-2-deoxyguanosine was statistically greatly improved from baseline after treatment in the HJG group compared to the GJG group. Adverse reactions were observed in 8.3% of patients, but all reactions were mild. Both HJG and GJG mixtures can serve as safe and effective potential therapeutic alternatives in patients with LUTS and cold sensitivity unresponsive to α1-blockers or antimuscarinic drugs. Additionally, HJG mixture was found to have anti-oxidative activity, and therefore further long-term clinical investigations are needed to examine its anti-aging effects in addition to its effect on urinary symptoms.
- Published
- 2015
- Full Text
- View/download PDF
50. Effects of preoperative dutasteride treatment in holmium laser enucleation of the prostate.
- Author
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Sato R, Sadaoka Y, Nishio K, Kobori Y, Yagi H, Arai G, Soh S, and Okada H
- Subjects
- Aged, Dissection, Humans, Male, Preoperative Care, Quality of Life, Retrospective Studies, Urodynamics, Video Recording, 5-alpha Reductase Inhibitors adverse effects, Dutasteride adverse effects, Lasers, Solid-State therapeutic use, Prostatic Hyperplasia drug therapy, Prostatic Hyperplasia surgery
- Abstract
Objectives: To investigate factors influencing the degree of difficulty in finding and maintaining an appropriate plane on the surgical capsule of the prostate during holmium laser enucleation of the prostate., Methods: A total of 116 men undergoing holmium laser enucleation of the prostate for benign prostate hyperplasia between January 2010 and September 2013 at our hospital were included in this analysis. The degree of difficulty in finding and maintaining the plane of the surgical capsule of the prostate was retrospectively evaluated and graded by using video-based analysis according to newly defined criteria (grade I, least difficult; grade IV, most difficult). Factors influencing the degree of difficulty were investigated., Results: Video analysis was possible in 99 of 116 patients. Decapsulation difficulty in decapsulation was deemed as being grade I in 32 patients, grade II in 31 patients, grade III in 20 patients and grade IV in 16 patients. Preoperative dutasteride therapy was the only factor associated with an increasing level of difficulty in decapsulation during holmium laser enucleation of the prostate., Conclusions: Although preoperative dutasteride therapy effectively reduces intraoperative blood loss, surgeons with limited experience should be careful with the use of dutasteride, because its administration might increase surgical difficulty during holmium laser enucleation of the prostate., (© 2015 The Japanese Urological Association.)
- Published
- 2015
- Full Text
- View/download PDF
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