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Okuda Y, Kato T, Fujita K, Fushimi H, Miyamoto H, Netto GJ, Nonomura N. Association of Androgen Receptor and PD-L1 Expression in Upper Urinary Tract Urothelial Carcinoma. Cancer Genomics Proteomics 2024; 21:137-143. [PMID: 38423597 PMCID: PMC10905274 DOI: 10.21873/cgp.20435] [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: 12/08/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND/AIM The response to immune checkpoint inhibitors (ICIs) or enfortumab vedotin is limited in patients with upper urinary tract urothelial carcinoma (UTUC), and the development of new targeted therapy for UTUC is eagerly needed. Several biomarkers, including programmed cell death-ligand 1 (PD-L1), have already been reported as predictors of response to ICIs therapy for UTUC. Recently, several studies have shown that steroid hormone receptors, including the androgen receptor (AR), are associated with progression of urothelial carcinoma. MATERIALS AND METHODS We prepared tissue microarrays (TMA) from paraffin blocks of UTUC specimens in 99 non-metastatic UTUC patients who underwent radical nephroureterectomy. With these TMA sections, we performed immunohistochemical staining for PD-L1 and AR and examined PD-L1 and AR expression levels in tumor cells. In addition, we analyzed the correlation between these markers and clinical prognosis in UTUC cases. RESULTS PD-L1 was positive in 24 (24%) of the 99 samples, whereas AR was positive in 20 (20%) patients. AR-negative samples had significantly higher PD-L1 expression level than that the AR-positive samples (mean value 4.70% versus 2.55%, p=0.0324). Among AR-positive cases, patients with absence of PD-L1 expression had significantly lower cancer-specific survival (CSS) than that in PD-L1 expression-positive cases (p=0.049), although PD-L1 expression had no significant impact on CSS in AR-negative cases (p=0.920). CONCLUSION Our findings suggest that AR is the promising target for UTUC treatment, especially in PD-L1-negative cases.
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Affiliation(s)
- Yohei Okuda
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Taigo Kato
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan;
| | - Kazutoshi Fujita
- Department of Urology, Kindai University Faculty of Medicine, Sayama, Japan
| | - Hiroaki Fushimi
- Department of Pathology, Osaka General Medical Center, Osaka, Japan
| | - Hiroshi Miyamoto
- Departments of Pathology & Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, U.S.A
- Urology, University of Rochester Medical Center, Rochester, NY, U.S.A
| | - George J Netto
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, U.S.A
| | - Norio Nonomura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
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Uemura T, Kawashima A, Jingushi K, Motooka D, Saito T, Nesrine S, Oka T, Okuda Y, Yamamoto A, Yamamichi G, Tomiyama E, Ishizuya Y, Yamamoto Y, Kato T, Hatano K, Tsujikawa K, Wada H, Nonomura N. Bacteria-derived DNA in serum extracellular vesicles are biomarkers for renal cell carcinoma. Heliyon 2023; 9:e19800. [PMID: 37810127 PMCID: PMC10559165 DOI: 10.1016/j.heliyon.2023.e19800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023] Open
Abstract
This is the first study to determine the clinical importance of circulating bacterial DNA in patients with renal cell carcinoma (RCC). We performed 16S rRNA metagenomic analysis of serum extracellular vesicles (EVs) from 88 patients with RCC and 10 healthy donors and identified three abundant bacterial DNA: Bacteroidia, TM7-1, and Sphingomonadales. Combining characteristic bacterial DNA information (three bacteria-derived DNA), a BTS index was created to diagnose patients with RCC. The BTS index showed high sensitivity not only in the discovery cohort, but also in the validation cohort, suggesting that it was useful as a screening test. Furthermore, in nivolumab treatment of RCC, patients with higher levels of Bacteroidia DNA in serum EVs had significantly poorer progression-free and overall survival than did those with lower levels. This study showed that circulating Bacteria-derived DNA could be used as a biomarker for RCC.
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Affiliation(s)
- Toshihiro Uemura
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Atsunari Kawashima
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kentaro Jingushi
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Genome Information Research Center, Osaka University Research Institute for Microbial Diseases, Suita, Osaka, 565-0871, Japan
| | - Takuro Saito
- Department of Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
- Department of Clinical Research in Tumor Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Sassi Nesrine
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshiki Oka
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yohei Okuda
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akinaru Yamamoto
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Gaku Yamamichi
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Eisuke Tomiyama
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yu Ishizuya
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshiyuki Yamamoto
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Taigo Kato
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Koji Hatano
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazutake Tsujikawa
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hisashi Wada
- Department of Clinical Research in Tumor Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Norio Nonomura
- Department of Urology, Osaka University, Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Yamashina H, Sakai T, Akatsu T, Takatsu Y, Okuda Y. Current Status on Medical Radiation Safety Management in Asia: A Questionnaire Survey. J Med Imaging Radiat Sci 2022. [DOI: 10.1016/j.jmir.2022.10.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Kawashima A, Yamamoto Y, Sato M, Nakata W, Kakuta Y, Ishizuya Y, Yamaguchi Y, Yamamoto A, Yoshida T, Takayama H, Takada T, Inoue H, Okuda Y, Kato T, Hatano K, Uemura M, Nonomura N, Imamura R. FAN score comprising fibrosis-4 index, albumin-bilirubin score and neutrophil-lymphocyte ratio is a prognostic marker of urothelial carcinoma patients treated with pembrolizumab. Sci Rep 2021; 11:21199. [PMID: 34707147 PMCID: PMC8551158 DOI: 10.1038/s41598-021-00509-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/14/2021] [Indexed: 02/08/2023] Open
Abstract
It is important to identify prognostic and predictive markers of metastatic urothelial carcinoma (mUC) treated with immunocheckpoint inhibitors. We sought to establish a prognostic marker for patients with mUC treated with pembrolizumab based on only blood test results. We included 165 patients with mUC in the discovery cohort and 103 with mUC who were treated with pembrolizumab in the validation cohort. Multivariate and Cox regression analyses were used to analyse the data. In the discovery cohort, the fibrosis-4 index (hazard ratio [HR]: 2.13, 95% confidence interval [CI] 1.20–3.76, p = 0.010), albumin–bilirubin score (HR 1.91, 95% CI 1.27–2.88, p = 0.002), and neutrophil–lymphocyte ratio (HR: 1.84, 95% CI 1.22–2.79, p = 0.004) were independent significant prognostic factors. We established a ‘FAN score’ that included these three aforementioned items, which were assigned one point each. We divided patients into the 0–1 point (n = 116) and 2–3 points (n = 49) groups. The FAN score was a significant prognostic marker for cancer-specific survival (CSS) (HR 1.48, 95% CI 1.19–1.83, p < 0.001) along with the Eastern Cooperative Oncology Group Performance Status. The FAN score was also a prognostic factor of progression-free survival (PFS) (HR: 1.25, 95% CI 1.01–1.54, p = 0.036) along with the presence of liver metastasis. In the validation cohort, the FAN score was a significant prognostic factor for CSS (HR: 1.48, 95% CI 1.19–1.85, p = 0.001) and PFS (HR: 1.29, 95% CI 1.02–1.62, p = 0.034). We established the FAN score as a prognostic marker for patients with mUC treated with pembrolizumab.
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Affiliation(s)
- Atsunari Kawashima
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Yoshiyuki Yamamoto
- Department of Urology, Osaka International Cancer Institute, Osaka, Japan
| | - Mototaka Sato
- Department of Urology, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - Wataru Nakata
- Department of Urology, Osaka Rosai Hospital, Sakai, Japan
| | - Yoichi Kakuta
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Yu Ishizuya
- Department of Urology, Higashiosaka City Medical Center, Higashiōsaka, Japan
| | | | | | - Takahiro Yoshida
- Department of Urology, Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Japan
| | | | | | - Hitoshi Inoue
- Department of Urology, Ikeda City Hospital, Ikeda, Japan
| | - Yohei Okuda
- Department of Urology, Sumitomo Hospital, Osaka, Japan
| | - Taigo Kato
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Koji Hatano
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Motohide Uemura
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Norio Nonomura
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Ryoichi Imamura
- Department of Urology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Johnson M, Doi T, Piha-Paul S, Sen S, Shimizu T, Cheng B, Yoshizuka N, Okamoto N, Okuda Y, Qian X, Serbest G, Hammett T, Brady W, Patel M, Bendell J. 513O A phase I/II multicenter, first-in-human study of DS-7300 (B7-H3 DXd-ADC) in patients (pts) with advanced solid tumors. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Niki A, Deguchi Y, Iwasaki S, Mitake T, Okuda Y, Sakaguchi A, Hirota T, Shirahama Y, Nakamichi Y, Inoue K. Gender differences in self-perceived changes among Japanese workers with depression. Occup Med (Lond) 2021; 70:680-684. [PMID: 33247305 DOI: 10.1093/occmed/kqaa202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The number of patients living with depression continues to increase in Japan. The economic effects of depression include loss of productivity due to both absenteeism and presenteeism. Gender differences have been reported in prevalence, onset pathways and subjective symptoms of depression. AIMS To understand how workers with major depressive disorder (MDD) perceive problems in the workplace and examine gender differences in their self-perceived levels of functioning at work, noticed during the initial stages of depression. METHODS This is a cross-sectional study of Japanese workers with MDD. Participants' self-perceived changes in the level of functioning at work were surveyed after the diagnosis during the first visit. The relationship between gender and changes in the level of functioning at work as initially perceived by the participants themselves was analysed using the chi-square test, supplemented by a residual analysis. RESULTS We administered the survey to 147 workers with MDD. In terms of gender differences in initial self-perceived changes in the level of functioning at work, the proportion of men reporting reduced work efficiency was significantly higher than that of women, while the proportion of women reporting deterioration in relationships with colleagues and superiors was significantly higher than that of men. CONCLUSIONS The findings suggest that greater attention to reduced work efficiency by men and to deterioration in work relationships by women with MDD should be essential components of self-care. Managers need to pay attention to the level of functioning and provide adequate social support for employees.
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Affiliation(s)
- A Niki
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Y Deguchi
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - S Iwasaki
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Mitake
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Y Okuda
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - A Sakaguchi
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - T Hirota
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Y Shirahama
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Y Nakamichi
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - K Inoue
- Department of Neuropsychiatry, Osaka City University, Graduate School of Medicine, Osaka, Japan
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Affiliation(s)
- Y Izumiya
- Department of Respiratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - Y Okuda
- Department of Respiratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - S Ueki
- Department of General Internal Medicine and Clinical Laboratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - M Takeda
- Department of Respiratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - K Sato
- Department of Respiratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
| | - K Nakayama
- Department of Respiratory Medicine, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
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Oka T, Hatano K, Okuda Y, Asakura T, Nakai Y, Nakayama M, Kakimoto K, Kubo C, Nakatsuka S, Nishimura K. Partial nephrectomy for a Bosniak IV cystic renal mass mimicking a simple renal cyst adjacent to a solid renal tumor. IJU Case Rep 2021; 4:18-21. [PMID: 33426489 PMCID: PMC7784766 DOI: 10.1002/iju5.12227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/12/2020] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Renal tumors are often associated with renal cysts. Meanwhile, in some cases there are challenging issues of how to diagnose renal cystic tumors and to decide surgical procedures. CASE PRESENTATION A 75-year-old man was referred to our department for a 21-mm tumor by his left kidney. Contrast-enhanced computed tomography showed an intense contrast uptake the tumor, which was adjacent to a 64-mm unilocular renal cyst with no contrasting effects. It was clinically diagnosed as renal cell carcinoma, stage T1aN0M0, and treated with robot-assisted partial nephrectomy, for both the solid tumor and the adjacent cyst. Pathological findings revealed a tumor cell clump within the cyst wall, concurrent with the renal cell carcinoma. The patient has remained free of disease at 1 year after surgery. CONCLUSION A partial nephrectomy that includes the entire cyst wall should be considered for renal tumor associated with unilocular renal cyst.
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Affiliation(s)
- Toshiki Oka
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
| | - Koji Hatano
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
| | - Yohei Okuda
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
| | | | - Yasutomo Nakai
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
| | - Masashi Nakayama
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
| | | | - Chiaki Kubo
- Department ofPathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Shin‐ichi Nakatsuka
- Department ofPathology and CytologyOsaka International Cancer InstituteOsakaJapan
| | - Kazuo Nishimura
- Departments ofDepartment ofUrologyPathology and CytologyOsakaJapan
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Oka T, Yamamoto Y, Okuda Y, Asakura T, Hatano K, Nakai Y, Nakayama M, Kakimoto K, Sugai F, Nishimura K. Renal cell carcinoma with central nervous system demyelination caused by nivolumab. IJU Case Rep 2021; 4:44-48. [PMID: 33426497 PMCID: PMC7784733 DOI: 10.1002/iju5.12234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/25/2020] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION Central nervous system demyelination caused by immune checkpoint inhibitors is a very rare condition. CASE PRESENTATION A 65-year-old man who received nivolumab for renal cell carcinoma developed abnormal behavior, such as disagreeable speech and sudden anger. Brain-enhanced magnetic resonance imaging revealed multiple lesions with partial contrast effects in the cerebral white matter. We tentatively diagnosed demyelination caused by nivolumab, and performed steroid pulse therapy twice. After that, his symptoms improved. For the next 2 years, his symptoms did not recur, nor did his cancer progress. CONCLUSION Demyelination caused by immune checkpoint inhibitors can be fatal and requires early diagnosis and treatment.
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Affiliation(s)
- Toshiki Oka
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | | | - Yohei Okuda
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | | | - Koji Hatano
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | - Yasutomo Nakai
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | - Masashi Nakayama
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
| | | | | | - Kazuo Nishimura
- Department of UrologyOsaka International Cancer InstituteOsakaJapan
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Yasui T, Okuda Y, Shioyama W, Oka T, Nishikawa T, Kamada R, Hatano K, Nishimura K, Fujita M. Acute myocardial infarction caused by tumor embolus originating from upper tract urothelial carcinoma: a case report. Cardio-Oncology 2020; 6:18. [PMID: 32944288 PMCID: PMC7487790 DOI: 10.1186/s40959-020-00073-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/31/2020] [Indexed: 12/02/2022]
Abstract
Coronary emboli from malignant tumors rarely cause acute myocardial infarction. We report the case of a patient with tumor embolism from an upper tract urothelial carcinoma that caused acute myocardial infarction via a patent foramen ovale. Coronary blood flow was restored by embolus aspiration without stenting. Clinicians must consider malignant tumor embolism as a possible cause of acute myocardial infarction.
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Yoshino T, Siena S, Di Bartolomeo M, Raghav K, Masuishi T, Loupakis F, Kawakami H, Yamaguchi K, Nishina T, Fakih M, Elez E, Rodriguez J, Ciardiello F, Saxena K, Yamamoto E, Kobayashi K, Bako E, Okuda Y, Grothey A. 84MO A phase II, multicenter, open-label study of trastuzumab deruxtecan (T-DXd; DS-8201) in patients with HER2-expressing metastatic colorectal cancer (mCRC): DESTINY-CRC01. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Takahashi M, Bang YJ, Karayama M, Watanabe J, Minami H, Yamamoto N, Kinoshita I, Lin C, Im YH, Fujiki T, Achiwa I, Kamiyama E, Okuda Y, Lee C, Takahashi S. 147P Pharmacokinetics, safety, and efficacy of trastuzumab deruxtecan (T-DXd) with OATP1B/CYP3A inhibitors in patients with HER2-expressing advanced solid tumours. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.03.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Bang YJ, Karayama M, Takahashi M, Watanabe J, Minami H, Yamamoto N, Kinoshita I, Lin CC, Im YH, Fujiki T, Achiwa I, Kamiyama E, Okuda Y, Lee C, Takahashi S. Pharmacokinetics (PK), safety, and efficacy of [fam-] trastuzumab deruxtecan with OATP1B/CYP3A inhibitors in subjects with HER2-expressing advanced solid tumours. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz242.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takahashi K, Asai T, Okuda Y. Efficacy of a new blood pressure monitor (inflationary non-invasive blood pressure, iNIBP™): a randomised controlled study. Anaesthesia 2019; 75:37-44. [PMID: 31556454 DOI: 10.1111/anae.14850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2019] [Indexed: 11/29/2022]
Abstract
The inflationary non-invasive blood pressure monitor (iNIBP™) uses a new measurement method, whereby the cuff is slowly inflated whilst simultaneously sensing oscillations, to determine the diastolic blood pressure first and then the systolic pressure. It may measure blood pressure more quickly than the conventional non-invasive blood pressure monitor. We studied 66 patients undergoing general anaesthesia, comparing the time taken to measure the blood pressure between the two monitors at times when there were marked changes (increases or decreases by 30 mmHg or greater) in the systolic blood pressure. The median (IQR) [range]) time was significantly longer for the non-invasive blood pressure monitor (38.8 (31.5-44.7) [18.0-130.0] s) than for the iNIBP (14.6 (13.7-16.4) [11.5-35.5] s), p = 0.001, 95%CI for difference 22-25 s). We also studied 30 volunteers to evaluate the accuracy of the iNIBP, comparing it with the mercury sphygmomanometer. There was good agreement between the two monitors, with a mean difference of 0 (95% limit of agreement -12 to 11) mmHg for the systolic blood pressure. We also compared the degree of pain during cuff inflation between the automated non-invasive blood pressure and iNIBP monitors. Pain was significantly more for the non-invasive blood pressure monitor (22 of 30 volunteers had less pain with the iNIBP). We have shown that the iNIBP measured the blood pressure quicker than the conventional non-invasive blood pressure monitor and the speed of measurement was not significantly affected by marked changes in the blood pressure.
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Affiliation(s)
- K Takahashi
- Department of Anaesthesiology, Dokkyo Medical University, Koshigaya City, Japan
| | - T Asai
- Department of Anaesthesiology, Dokkyo Medical University, Koshigaya City, Japan
| | - Y Okuda
- Department of Anaesthesiology, Dokkyo Medical University, Koshigaya City, Japan
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Yoshino T, Siena S, Dalal R, Okuda Y, Yamamoto E, Grothey A. A multicenter, multicohort, phase II study of trastuzumab deruxtecan (DS-8201a) in subjects with HER2-expressing metastatic colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ito S, Ito H, Rakugi H, Okuda Y, Yoshimura M, Yamakawa S. A DOUBLE BLIND PHASE III STUDY OF ESAXERENONE (CS-3150) COMPARED TO EPLERENONE IN PATIENTS WITH ESSENTIAL HYPERTENSION (ESAX-HTN STUDY). J Hypertens 2018. [DOI: 10.1097/01.hjh.0000539672.65099.dd] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yoshino T, Siena S, Dalal R, Okuda Y, Yamamoto E, Grothey A. A multicenter, multicohort, phase 2 study of trastuzumab deruxtecan (DS-8201a) in subjects with HER2-expressing metastatic colorectal cancer - Trial in progress. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Shimura T, Okuda Y, Yamada T, Hirata Y, Joh T. Colorectal obstruction is a potential prognostic factor for stage II/III colorectal cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx659.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Hirose N, Okuda Y, Mori S. Across-frequency impairment in seeing a temporal gap. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.0t065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- N. Hirose
- Department of Informatics-Faculty of Information Science and Electrical Engineering; Kyushu University; Fukuoka Japan
| | - Y. Okuda
- Department of Informatics-Graduate School of Information Science and Electrical Engineering; Kyushu University; Fukuoka Japan
| | - S. Mori
- Department of Informatics-Faculty of Information Science and Electrical Engineering; Kyushu University; Fukuoka Japan
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20
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Kuribayashi S, Takezawa K, Okuda Y, Kawamura M, Kishimoto N, Tanigawa G, Tsutahara K, Takao T, Yamaguchi S. Robot-Assisted Laparoscopic Prostatectomy in a Prostate Cancer Patient Undergoing Continuous Ambulatory Peritoneal Dialysis. J Endourol Case Rep 2017; 3:42-44. [PMID: 28451644 PMCID: PMC5397213 DOI: 10.1089/cren.2017.0014] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Background: Robot-assisted laparoscopic prostatectomy (RALP) has become the gold standard treatment for organ-confined prostate cancer. However, no proper surgical approach or appropriate postsurgical management of RALP has been established for a patient undergoing peritoneal dialysis. Here, we present a case of a peritoneal dialysis patient who underwent RALP and reinstated peritoneal dialysis with no trouble associated with peritoneal dialysis. Case Presentation: The patient was a 61-year-old man with organ-confined prostate cancer. He had been on peritoneal dialysis for 2 years. The peritoneal dialysis catheter was routed subcutaneously from the left lateral region into the abdominal cavity at the paramedian region. RALP was performed by the transperitoneal anterior approach. The surgical maneuver was not influenced by the peritoneal dialysis catheter at all. At the end of surgery, the incised peritoneum was sutured and closed tightly. After surgery, peritoneal dialysis was temporarily interrupted for 2 weeks. Then it was safely reinitiated with no complications. Conclusion: Transperitoneal RALP with complete peritoneal repair can be a standard treatment option for a prostate cancer patient undergoing peritoneal dialysis.
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Affiliation(s)
| | - Kentaro Takezawa
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Yohei Okuda
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | | | - Nozomu Kishimoto
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Go Tanigawa
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Koichi Tsutahara
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Tetsuya Takao
- Department of Urology, Osaka General Medical Center, Osaka, Japan
| | - Seiji Yamaguchi
- Department of Urology, Osaka General Medical Center, Osaka, Japan
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21
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Kuribayashi S, Takao T, Okuda Y, Kawamura M, Nakano K, Kishimoto N, Takezawa K, Tanigawa G, Tsutahara K, Watanabe H, Umayahara Y, Yamaguchi S. Case of pazopanib-induced thyrotoxicosis in a patient with metastatic renal cell carcinoma. Int Cancer Conf J 2017; 6:118-120. [PMID: 31149484 DOI: 10.1007/s13691-017-0288-8] [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: 01/15/2017] [Accepted: 03/22/2017] [Indexed: 11/24/2022] Open
Abstract
Pazopanib is an oral multi-targeted tyrosine kinase inhibitor and has been approved for metastatic renal cell carcinoma and advanced soft tissue sarcoma. To the best of our knowledge, pazopanib-induced thyrotoxicosis has never been reported. The patient was a 68-year-old woman with renal cell carcinoma and multiple metastases. Three weeks after pazopanib medication, she felt fatigue and palpitation. She was admitted because of liver chemistry abnormalities [AST 723 IU/L (normal range 7-37 IU/L); ALT 953 IU/L (normal range 3-33 IU/L)]. She showed abnormal thyroid function tests with suppressed TSH of 0.0585 μIU/mL, and elevated fT4 of 3.38 ng/dL. Ten days after admission, tachycardia appeared and fT3 and fT4 were elevated (fT3 27.85 pg/mL, fT4 2.58 ng/dL), and TSH was suppressed (0.0414 μIU/mL). Her thyroid ultrasound showed hypervascular thyroid gland without nodules. We diagnosed pazopanib-induced thyrotoxicosis. Because the fT3/fT4 ratio was high (10.8) and the thyroid was enlarged, we thought that her thyrotoxicosis might get worse. She was treated with medication of beta-blockers, hydrocortisone, and potassium iodide and thyrotoxicosis resolved. This report highlights that Pazopanib could induce thyrotoxicosis, and therefore, periodic surveillance of thyroid function is required during pazopanib therapy.
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Affiliation(s)
- Sohei Kuribayashi
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Tetsuya Takao
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Yohei Okuda
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Masataka Kawamura
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Kosuke Nakano
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Nozomu Kishimoto
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Kentaro Takezawa
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Go Tanigawa
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Koichi Tsutahara
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
| | - Hirotaka Watanabe
- 2Department of Diabetes and Metabolism, Japan Community Health Care Organization Osaka Hospital, Osaka, Japan
| | - Yutaka Umayahara
- Department of Diabetes and Metabolism, Osaka General Medical Center, Osaka, Japan
| | - Seiji Yamaguchi
- Department of Urology, Osaka General Medical Center, 3-1-56 Bandai Higashi, Sumiyoshi-ku, Osaka, 558-8558 Japan
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22
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Abstract
Arterial occlusion using radiofrequency energy was performed. The length of the noninsulated part of the guidewire was 10 mm and the duration of radiofrequency supply was 20 s. Animal experiments were carried out in 17 canine arteries; 4 out of 6 arteries less than 2.3 mm in diameter were completely occluded during the 20 s radiofrequency supply. A clinical application was also successfully performed without any complications. Arterial occlusion with radiofrequency can be applied to vessels less than about 2 mm in diameter.
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Affiliation(s)
- N. Tanigawa
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - S. Sawada
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - N. Morioka
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - T. Iwamiya
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - T. Senda
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - M. Kobayashi
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - Y. Okuda
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
| | - Y. Ohta
- From the Department of Radiology, Tottori University Hospital, Tottori, Japan
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23
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Komemushi A, Tanigawa N, Okuda Y, Kojima H, Fujii H, Shomura Y, Sougawa M, Sawada S. A new liquid embolic material for liver tumors: An animal experimental study using Onyx. Acta Radiol 2016; 43:186-91. [PMID: 12010301 DOI: 10.1080/028418502127347736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: To evaluate the feasibility of a new liquid embolic material, Onyx, for treating liver tumors. Material and Methods: Onyx is a mixture of 6% (w/v) ethylene-vinyl-alcohol copolymer dissolved in anhydrous dimethyl sulfoxide (DMSO) with 28% (w/v) tantalum powder. In addition to 6% Onyx, we also tried 4%, 2% and 1% solutions, prepared by adjusting the amount of DMSO. We used 15 white rabbits with liver tumors created by percutaneous injection of VX2 tumor cells. In 4 groups with 3 rabbits in each, the liver arteries were embolized with 6%, 4%, 2% and 1% Onyx, respectively, and in 3 rabbits DMSO alone was injected. The injections were performed just proximal to the bifurcation of the proper hepatic artery, followed by celiac arteriography. Post mortem, the livers were examined by soft-tissue radiography, and liver-tissue section microscopy. Results: The maximum number of arterial branching points passed by embolic material in either the right or left hepatic arteries was 11, 15 and 16, for 6%, 4% and 2% Onyx, respectively, but was non-measurable for 1% Onyx. Minimum diameters of arteries reached by 6%, 4%, 2% and 1% Onyx in tumorous areas were 40 μm, 35 μm, 20 μm and 10 μm, respectively, and in non-tumorous areas 35 μm, 5 μm, 5 μm and 5 μm, respectively. Conclusion: This study suggests that Onyx may be feasible for treatment of hepatic tumors.
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Affiliation(s)
- A Komemushi
- Department of Radiology, Kansai Medical University, Osaka, Japan
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Takahashi T, Minezaki H, Suzuki A, Obara K, Itaka K, Nomura R, Okuda Y. Control of the wetting properties of ^{4}He crystals in superfluid. Phys Rev E 2016; 93:052806. [PMID: 27300963 DOI: 10.1103/physreve.93.052806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 06/06/2023]
Abstract
To investigate whether it is possible to control the wetting of ^{4}He crystals on a wall in superfluid, the contact angles of ^{4}He crystals were measured on rough and smooth walls at very low temperatures. A rough wall was prepared in a simple manner in which a commercially available coating agent for car mirrors, which makes the glass surface superhydrophobic, was used to coat a glass plate. The contact angles of ^{4}He crystals were increased by approximately 10^{∘} on the rough wall coated with the agent. Therefore, the increase in the repellency of ^{4}He crystals in superfluid was demonstrated to be possible on a very rough surface. The enhancement of the contact angles and a scanning electron microscopy image of the coated surface both suggest that a Cassie-Baxter state of ^{4}He crystals was realized on the surface; the crystals did not have full contact with the wall, but entrapped superfluid was present beneath the crystals in the hollow parts of the rough wall.
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Affiliation(s)
- T Takahashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - H Minezaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - A Suzuki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - K Obara
- Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - K Itaka
- NJRISE, Hirosaki University, 2-1-3 Matsubara, Aomori-shi, Aomori 030-0613, Japan
| | - R Nomura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Y Okuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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25
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Murakawa S, Yamaguchi A, Arai M, Wasai M, Aoki Y, Ishimoto H, Nomura R, Okuda Y, Nagato Y, Higashitani S, Nagai K. Spin-dependent acoustic response in the nonunitary A1 and A2 phases of superfluid 3He under high magnetic fields. Phys Rev Lett 2015; 114:105304. [PMID: 25815943 DOI: 10.1103/physrevlett.114.105304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Indexed: 06/04/2023]
Abstract
The transverse acoustic impedance of superfluid ^{3}He was measured in the A1 and A2 phases up to 13 T to investigate the surface states in nonunitary superfluids. The temperature dependence of the impedance was much larger in the A1 phase than in the A2 phase. This nonsymmetric behavior indicates that momentum exchange with walls for spin-down surface states is quite different from that for spin-up surface states. The spin-dependent response might be a reflection of an essential feature of the nonunitary states where gap amplitudes depend on spin states. Weak-coupling theories ignore any spin-dependent processes and do not account for the nonsymmetric behavior.
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Affiliation(s)
- S Murakawa
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - A Yamaguchi
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - M Arai
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - M Wasai
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Aoki
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - H Ishimoto
- Institute for Solid State Physics, University of Tokyo, Chiba 277-8581, Japan
| | - R Nomura
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Okuda
- Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Y Nagato
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
| | - S Higashitani
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
| | - K Nagai
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan
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Hashimoto Y, Asai T, Arai T, Okuda Y. Effect of cricoid pressure on placement of the I-gel™ : a randomised study. Anaesthesia 2014; 69:878-82. [PMID: 24866121 DOI: 10.1111/anae.12731] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2014] [Indexed: 11/30/2022]
Abstract
We studied 40 adult patients to see if cricoid pressure affected placement of the I-gel(™). In a randomised crossover design, the i-gel was placed with and without cricoid pressure, and we compared the success rate of adequate ventilation through the i-gel, time to placement and the rate of optimal position of the device between the two circumstances. Cricoid pressure significantly decreased the success rate of adequate ventilation through the i-gel (40 vs 34 patients) (p = 0.041, 95% CI for difference 4-26%), and significantly decreased the rate of the optimal position (39 vs 17 patients) (p < 0.001). The time to achieve adequate ventilation was significantly longer (p < 0.001) with cricoid pressure than without (median difference 8 s; 95% CI for median difference 3-12 s). Cricoid pressure significantly decreases the success rate of ventilation through the i-gel, but the success rate of ventilation through the i-gel is reasonably high.
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Affiliation(s)
- Y Hashimoto
- Dokkyo Medical University Koshigaya Hospital, Koshigaya, Saitama, Japan
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27
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Oyama T, Kohno N, Oyama H, Okuda Y, Namba S, Takasugi K. Serum KL-6: a useful marker for early detection of methotrexate-induced interstitial pneumonia. Mod Rheumatol 2014; 12:366-7. [DOI: 10.3109/s101650200067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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28
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Okuda Y, Ohnishi M, Takasugi K. THU0091 Comparison of the clinical utility of anti-IL-6 receptor antibody therapy and anti-TNF therapy in aa amyloidosis in rheumatic disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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29
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Takada-Iwao A, Seki M, Nakanishi M, Souma J, Okuda S, Okuda Y, Imai Y, Sato S. Porcine circovirus type 2 (PCV2) vaccination reduces PCV2 in a PCV2 and Salmonella enterica serovar Choleraesuis coinfection model. Vet Microbiol 2013; 162:219-23. [DOI: 10.1016/j.vetmic.2012.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 10/01/2012] [Accepted: 10/05/2012] [Indexed: 11/30/2022]
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30
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Mukai M, Yokooka Y, Seki M, Okuda Y, Ando Y. Proposal of the Cooperation Method Between EMR/CPOE-RIS-TMS by Using the IHE (integrating the Healthcare Enterprise) - Implementation and Challenge. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mokuda S, Sawada N, Matoba K, Yamada A, Onishi M, Okuda Y, Jouyama K, Murata Y, Takasugi K. Serum undercarboxylated osteocalcin level increases with 48 weeks of teriparatide treatment in pre-treated elderly rheumatoid arthritis patients who use anti-resorptive drugs. J Endocrinol Invest 2012; 35:796-9. [PMID: 23135318 DOI: 10.1007/bf03347100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AIM The serum undercarboxylated osteocalcin (ucOC) level, a biochemical bone marker of vitamin K insufficiency, is often affected by anti-osteoporosis drugs. There have been no reports regarding the relationship between ucOC and teriparatide. SUBJECTS AND METHODS We conducted a prospective observational study of 26 female rheumatoid arthritis (RA) patients. The patients were divided into 3 groups: those who underwent a direct switch from anti-resorptive drugs to teriparatide (12 cases), those who started teriparatide without pre-treatment (5 cases), and the control patients (9 cases). The median age (interquartile range) of the patients in each group was 75 (67-77), 82 (78-84), and 69 (62-80) yr, respectively. All patients, except controls, received 48-week treatments of teriparatide. We analyzed the median 48-week changes from baseline of the serum ucOC levels with the Steel-Dwass method. RESULTS The median change from baseline in the direct switch group was higher than that in other groups (p<0.05). CONCLUSIONS The serum ucOC levels increased with treatment of teriparatide in elderly RA patients, especially when the patients received pre-treatment.
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Affiliation(s)
- S Mokuda
- Department of Internal Medicine, Center for Rheumatic Diseases, Dohgo Spa Hospital, Matsuyama City, Ehime, Japan.
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Abstract
Superfluid (3)He is an intensively investigated and well characterized p-wave superfluid. In the bulk Balian-Werthamer state, which is commonly called the (3)He B phase, the superfluid gap is opened isotropically but near a flat boundary such as a wall of a container it can harbor interesting quasi-particle states inside the gap. These states are called surface Andreev bound states, and have not been experimentally explored in detail. Transverse acoustic impedance measurement has revealed their existence and provided spectroscopic details of the dispersion of the bound states. Recent theoretical arguments claim that the surface Andreev bound states of the superfluid (3)He B phase can be recognized as the edge states of the topological superfluid and be regarded as a Majorana fermion, a fancy particle which has not been confirmed in elementary particle physics. In this review, we present up-to-date knowledge on the surface Andreev bound states of the (3)He B phase revealed by acoustic spectroscopy and the possible realization of a Majorana fermion, along with related studies on this topic.
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Affiliation(s)
- Y Okuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
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33
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Mokuda S, Okuda Y, Onishi M, Sawada N, Matoba K, Yamada A, Jouyama K, Takasugi K. Post-menopausal women with rheumatoid arthritis who are treated with raloxifene or alendronate or glucocorticoids have lower serum undercarboxylated osteocalcin levels. J Endocrinol Invest 2012; 35:661-4. [PMID: 21970822 DOI: 10.3275/7971] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Serum undercarboxylated osteocalcin (ucOC) is a biochemical bone marker of vitamin K insufficiency. It had been reported that bone resorption inhibitors tend to decrease the serum ucOC level in patients with primary osteoporosis. In rheumatoid arthritis (RA) patients, these results have never been reported. AIM We investigated risk factors which could change serum ucOC level in post-menopausal women with RA (no.=100). SUBJECTS AND METHODS Twenty patients received no bone resorption inhibitor (control), 30 received raloxifene (RLX), while 50 received alendronate (ALN). This cross-sectional study was limited to patients with low RA disease activity (Disease Activity Score-28 ≤3.2). We measured serum ucOC, and the data were analyzed by multivariable analysis, including ucOC and the other variables. RESULTS Scheffe's F test demonstrated a significant difference in serum ucOC levels between controls and the RLX group (p<0.01), and between controls and the ALN group (p<0.01). Serum ucOC levels were low in both treated groups. An adjusted multivariate analysis was performed for the variables: bone resorption inhibitor use, serum alkaline phosphatase, glucocorticoid dose, age, estimated glomerular filtration rate and matrix metalloproteinase 3. As a result, serum ucOC inversely correlated with bone resorption inhibitor use (p<0.01) and oral glucocorticoid dose (p<0.01), which were independent risk factors of lowering ucOC. CONCLUSIONS Bone resorption inhibitors and glucocorticoids were independent risk factors for lowering serum ucOC levels in post-menopausal RA patients.
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Affiliation(s)
- S Mokuda
- Department of Internal Medicine, Center for Rheumatic Diseases, Dohgo Spa Hospital, 21-21 Otsu Dohgo-Himezuka, Matsuyama, Ehime, 790-0858, Japan.
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Mukai M, Okuda Y, Yokooka Y, Seki M, Ando Y, Tsuji H. EP-1484 CONSTRUCTION OF THE COOPERATION BETWEEN THE HIS AND TMS BY USING IHE ESI INTEGRATION PROFILE. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71817-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Murakawa S, Wasai M, Akiyama K, Wada Y, Tamura Y, Nomura R, Okuda Y. Strong suppression of the Kosterlitz-Thouless transition in a 4He film under high pressure. Phys Rev Lett 2012; 108:025302. [PMID: 22324695 DOI: 10.1103/physrevlett.108.025302] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Indexed: 05/31/2023]
Abstract
We have found that the surface specularity for 3He quasiparticle scattering is closely related to the superfluidity and the Kosterlitz-Thouless (KT) transition of 4He film adsorbed on the surface. The specularity is determined by measurements of the transverse acoustic impedance of bulk liquid 3He. The unique point of our system is that we can control the correlation among 4He atoms in the film by changing the pressure of the bulk 3He. The observed KT transition temperature is significantly suppressed by increasing the pressure, which suggests a strong correlation effect on KT transition.
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Affiliation(s)
- S Murakawa
- Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
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36
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Takada-Iwao A, Nakanishi M, Souma J, Chikata S, Okuda Y, Imai Y, Sato S. Porcine circovirus type 2 potentiates morbidity of Salmonella enterica serovar Choleraesuis in Cesarean-derived, colostrum-deprived pigs. Vet Microbiol 2011; 154:104-12. [PMID: 21782358 DOI: 10.1016/j.vetmic.2011.06.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 06/23/2011] [Accepted: 06/28/2011] [Indexed: 10/18/2022]
Abstract
PROBLEM ADDRESSED Porcine circovirus type 2 (PCV2) and Salmonella enterica subspecies enterica serovar Choleraesuis (S. Choleraesuis) are two leading causes of economic loss in the swine industry. Although S. Choleraesuis infection occurs concurrently with PCV2-associated disease in many swine herds, the pathogenesis of concurrent infection with PCV2 and S. Choleraesuis remains largely undefined. OBJECTIVE We investigated the interactions between PCV2 and S. Choleraesuis in 20 Cesarean-derived, colostrum-deprived (CDCD) pigs randomly assigned to 4 groups (n=5 per group). METHODS AND APPROACH Pigs in the dual-infected and PCV2-infected groups were inoculated intranasally with PCV2 at 5 weeks of age, and pigs in the dual-infected and S. Choleraesuis-infected groups were inoculated intranasally with S. Choleraesuis at 7 weeks of age. Pigs in the control group served as uninfected controls. RESULTS After S. Choleraesuis inoculation, severe clinical signs, reduction of weight gain, and severe microscopic lung lesions were observed in dual-infected pigs compared to those in other groups. In addition, the pigs in the dual-infected group shed significantly (P=0.002) higher quantities of S. Choleraesuis in feces 12 days after S. Choleraesuis inoculation, and S. Choleraesuis was recovered from more tissues in this group 14 days after S. Choleraesuis inoculation. CONCLUSIONS These results indicate that prior PCV2 infection potentiates the severity of clinical signs, lung lesions, and fecal shedding and tissue dissemination of S. Choleraesuis in infected pigs. Therefore, dual infection of pigs with PCV2 and S. Choleraesuis may increase clinical effects of salmonellosis in the field.
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Affiliation(s)
- A Takada-Iwao
- Zen-noh Institute of Animal Health, 7 Ohja-machi, Sakura, Chiba 285-0043, Japan.
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Abstract
404 Background: Treatment options for metastatic renal cell carcinoma (mRCC) have increased. Complete remission is, however, rarely seen and patients are treated with multiple sequential therapies. We assessed clinical activity of sorafenib rechallenge after progressing on other therapies. Methods: Patients with mRCC who received a second course of sorafenib therapy after failure of prior sorafenib and other agents were retrospectively identified. RECIST-defined objective response rate and progression-free survival (PFS) and toxicity were analyzed. Results: Fourteen patients with mRCC who were retreated with sorafenib were identified and twelve patients were assessable for this study. 92% were male. Median age at first systemic therapy was 63 years. Prior nephrectomy was performed in 92% of patients. 42% of patients had favorable or intermediate risk, 17% poor, and the rest not available per MSKCC criteria. Eighty-three percent of patients were treated with other agents before initial sorafenib therapy, including 75% interferon-alpha (IFN-alpha), 50% interleukin-2 (IL-2), and 17% sunitinib. First sorafenib therapy began a median of 9.0 months after the diagnosis of mRCC and produced a clinical benefit (PR + SD) rate of 75% and a median PFS of 5.0 months. 67% of patients discontinued initial sorafenib for disease progression and 33% for adverse events. Interval between discontinuation of initial sorafenib and rechallenge was a median of 7.6 months. During the intervening period, 50% of patients were treated with sunitinib, 33% with everolimus, 25% with VEGFR1 vaccine, and others. Clinical benefit rate of 67% and a median PFS of 4.3 months were obtained on sorafenib rechallenge. There was no significant difference in outcome to sorafenib rechallenge based on duration between sorafenib treatments or number or type of intervening treatments. No new severe toxicity was observed during rechallenge. Conclusions: Sorafenib rechallenge has potential to achieve clinical benefits, is well-tolerated, and may be considered after multiple sequential therapies in select mRCC patients. No significant financial relationships to disclose.
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Affiliation(s)
- M. Nozawa
- Kinki University School of Medicine, Osaka-Sayama, Japan
| | - N. Matsumura
- Kinki University School of Medicine, Osaka-Sayama, Japan
| | - M. Yasuda
- Kinki University School of Medicine, Osaka-Sayama, Japan
| | - Y. Okuda
- Kinki University School of Medicine, Osaka-Sayama, Japan
| | - H. Uemura
- Kinki University School of Medicine, Osaka-Sayama, Japan
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Dodo T, Uchida K, Hirose T, Fukuta T, Kojima C, Shiraishi I, Kato E, Horiba T, Mineshima H, Okuda Y, Maeda M, Katsutani N, Hirano K, Aoki T. Increases in discontinuous rib cartilage and fused carpal bone in rat fetuses exposed to the teratogens, busulfan, acetazolamide, vitamin A, and ketoconazole. Hum Exp Toxicol 2010; 29:439-50. [DOI: 10.1177/0960327110363862] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Skeletal changes induced by treatment of pregnant rats with four potent teratogens, busulfan, acetazolamide, vitamin A palmitate, and ketoconazole, were evaluated using Alizarin Red S and Alcian Blue double-staining to investigate the relationship between drug-induced skeletal malformations and cartilaginous changes in the fetuses. Pregnant rats (N = 8/group) were treated once or twice between gestation days (GDs) 10 to 13 with busulfan at doses of 3, 10, or 30 mg/kg; acetazolamide at 200, 400, or 800 mg/kg; vitamin A palmitate at 100,000, 300,000, or 1,000,000 IU/kg; or ketoconazole at doses of 10, 30, or 100 mg/kg. Uterine evaluations and fetal external and skeletal examinations were conducted on GD 20. Marked skeletal abnormalities in ribs and hand/forelimb bones such as absent/ short/bent ribs, fused rib cartilage, absent/fused forepaw phalanx, and misshapen carpal bones were induced at the mid- and high-doses of busulfan and acetazolamide and at the high-dose of vitamin A palmitate and ketoconazole. Increased incidences of discontinuous rib cartilage (DRC) and fused carpal bone (FCB) were observed from the low- or mid-dose in the busulfan and acetazolamide groups, and incidences of FCB were increased from the mid-dose in the vitamin A palmitate and ketoconazole groups. Therefore, DRC and FCB were detected at lower doses than those at which ribs and hand/forelimb malformations were observed in the four potent teratogens.
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Affiliation(s)
- T. Dodo
- Planning & Coordination, Biopharmaceutical Assessments Core Function Unit, Ibaraki, Japan, , Gifu Pharmaceutical University, 5-6-1 Mitahora-higashi Gifu-shi, Gifu 502-8585, Japan
| | - K. Uchida
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - T. Hirose
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - T. Fukuta
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - C. Kojima
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - I. Shiraishi
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - E. Kato
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - T. Horiba
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - H. Mineshima
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - Y. Okuda
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - M. Maeda
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Ibaraki, Japan
| | - N. Katsutani
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
| | - K. Hirano
- Gifu Pharmaceutical University, 5-6-1 Mitahora-higashi Gifu-shi, Gifu 502-8585, Japan
| | - T. Aoki
- Drug Safety Japan, Biopharmaceutical Assessments Core Function Unit, Eisai Co., Ltd., Gifu, Japan
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Murakawa S, Tamura Y, Wada Y, Wasai M, Saitoh M, Aoki Y, Nomura R, Okuda Y, Nagato Y, Yamamoto M, Higashitani S, Nagai K. New anomaly in the transverse acoustic impedance of superfluid 3He-B with a wall coated by several layers of 4He. Phys Rev Lett 2009; 103:155301. [PMID: 19905647 DOI: 10.1103/physrevlett.103.155301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 09/18/2009] [Indexed: 05/28/2023]
Abstract
We measured the transverse acoustic impedance of superfluid 3He-B with a wall coated by several layers of 4He. The coating is known to enhance the specularity in quasiparticle scattering by the wall. We found a new anomaly, a bump and a peak, in the temperature dependence of the transverse acoustic impedance. This agrees with a theoretical calculation using a partially specular wall boundary condition. The new anomaly is shown to arise from a change in the surface density of states by coating and the scattering of thermally occupied surface bound states to other states. The change is towards the density of states of Majorana cone in the specular limit.
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Affiliation(s)
- S Murakawa
- Department of Condensed Matter Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
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Nozawa M, Oki T, Okuda Y, Minami T, Hayashi T, Nagae S, Nishigaki K, Mochida Y, Uemura H. 7125 Tolerability and adverse events of sunitinib in Japanese patients with advanced renal cell carcinoma. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71458-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Okuda Y, Irisawa Y, Okimoto K, Osawa T, Yamashita S. A new formulation for orally disintegrating tablets using a suspension spray-coating method. Int J Pharm 2009; 382:80-7. [PMID: 19686825 DOI: 10.1016/j.ijpharm.2009.08.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Revised: 06/23/2009] [Accepted: 08/09/2009] [Indexed: 11/25/2022]
Abstract
The aim of this study was to design a new orally disintegrating tablet (ODT) that has high tablet hardness and a fast oral disintegration rate using a new preparation method. To obtain rapid disintegration granules (RDGs), a saccharide, such as trehalose, mannitol, or lactose, was spray-coated with a suspension of corn starch using a fluidized-bed granulator (suspension method). As an additional disintegrant, crospovidone, light anhydrous silicic acid, or hydroxypropyl starch was also included in the suspension. The RDGs obtained possessed extremely large surface areas, narrow particle size distribution, and numerous micro-pores. When tabletting these RDGs, it was found that the RDGs increased tablet hardness by decreasing plastic deformation and increasing the contact frequency between granules. In all tablets, a linear relationship was observed between tablet hardness and oral disintegration time. From each linear correlation line, a slope (D/H value) and an intercept (D/H(0) value) were calculated. Tablets with small D/H and D/H(0) values could disintegrate immediately in the oral cavity regardless of the tablet hardness and were considered to be appropriate for ODTs. Therefore, these values were used as key parameters to select better ODTs. Of all the RDGs prepared in this study, mannitol spray-coated with a suspension of corn starch and crospovidone (2.5:1 w/w ratio) showed most appropriate properties for ODTs; fast in vivo oral disintegration time, and high tablet hardness. In conclusion, this simple method to prepare superior formulations for new ODTs was established by spray-coating mannitol with a suspension of appropriate disintegrants.
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Affiliation(s)
- Y Okuda
- Towa Pharmaceutical Co., Ltd., 26-7 Ichiban-Cho, Kadoma, Osaka 571-0033, Japan.
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Liu E, Asai T, Matsumoto S, Hirabayashi Y, Seo N, Suzuki A, Toi T, Yasumoto K, Okuda Y. The Airway Scope, a new video laryngoscope: its use in 253 patients with difficult airways. J Clin Anesth 2009. [DOI: 10.1016/j.jclinane.2008.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mukuda H, Fujii T, Ohara T, Harada A, Yashima M, Kitaoka Y, Okuda Y, Settai R, Onuki Y. Enhancement of superconducting transition temperature due to the strong antiferromagnetic spin fluctuations in the noncentrosymmetric heavy-fermion superconductor CeIrSi3: A 29Si NMR study under pressure. Phys Rev Lett 2008; 100:107003. [PMID: 18352225 DOI: 10.1103/physrevlett.100.107003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Indexed: 05/26/2023]
Abstract
We report a (29)Si NMR study on the pressure-induced superconductivity (SC) in an antiferromagnetic (AFM) heavy-fermion compound CeIrSi(3) without inversion symmetry. In the SC state at P = 2.7-2.8 GPa, the temperature (T) dependence of the nuclear-spin lattice relaxation rate 1/T(1) below T(c) exhibits a T(3) behavior without any coherence peak just below T(c), revealing the presence of line nodes in the SC gap. In the normal state, 1/T(1) follows a square root T-like behavior, suggesting that the SC emerges under the non-Fermi-liquid state dominated by AFM spin fluctuations enhanced around a quantum critical point. The reason why the maximum T(c) in CeIrSi(3) is relatively high among the Ce-based heavy-fermion superconductors may be the existence of the strong AFM spin fluctuations. We discuss the comparison with the other Ce-based heavy-fermion superconductors.
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Affiliation(s)
- H Mukuda
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan.
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Enomoto Y, Asai T, Arai T, Kamishima K, Okuda Y. Pentax-AWS, a new videolaryngoscope, is more effective than the Macintosh laryngoscope for tracheal intubation in patients with restricted neck movements: a randomized comparative study. Br J Anaesth 2008; 100:544-8. [PMID: 18238836 DOI: 10.1093/bja/aen002] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND We studied whether laryngoscopy and tracheal intubation were easier when using the Pentax-AWS (Tokyo, Japan), a new videolaryngoscope, than when applying the Macintosh laryngoscope, during manual in-line neck stabilization. METHODS In 203 anaesthetized patients with manual in-line neck stabilization, we inserted the Pentax-AWS and a Macintosh laryngoscope, in turn, and recorded the view of the glottis and time taken to laryngoscopy. The success rate of tracheal intubation (within 120 s) and time to intubation were also recorded. RESULTS The view of the glottis was significantly better with the Pentax-AWS than with the Macintosh laryngoscope (P<0.001). For the Macintosh laryngoscope, the view was obscured in 22 of 203 patients (11%) (Grade 3 in 21 patients and Grade 4 in one patient), whereas for the Pentax-AWS, the glottis was always clearly seen (Grade 1). Time taken to see the glottis with the Pentax-AWS [mean (sd): 6.0 (3.1) s] was significantly shorter than with the Macintosh laryngoscope [11.0 (5.0) s] (95% CI for difference: 4-6 s). The success rate of tracheal intubation with the Pentax-AWS (all of 99 patients) was significantly higher than with the Macintosh laryngoscope (93 of 104 patients) (P=0.001). Time taken for intubation was similar between the Macintosh laryngoscope [51 (27) s] and the Pentax-AWS [54 (14) s] (95% CI for difference: -9 to 3 s). CONCLUSIONS In patients with stabilized neck, the Pentax-AWS provided a better view of the glottis and a higher success rate of tracheal intubation, compared with the conventional Macintosh laryngoscope.
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Affiliation(s)
- Y Enomoto
- Department of Anaesthesiology, Koshigaya Hospital, Dokkyo Medical University, Koshigaya City, Saitama, Japan
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Seita Y, Sugio S, Sano D, Nakada M, Hoshina M, Okuda Y, Ito J, Kashiwazaki N. 273 REMOVAL OF ACROSOME FROM SPERM HEADS IMPROVES DEVELOPMENT OF RAT ZYGOTES THROUGH INTRACYTOPLASMIC SPERM INJECTION. Reprod Fertil Dev 2008. [DOI: 10.1071/rdv20n1ab273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In intracytoplasmic sperm injection (ICSI), sperm chromatin is introduced into the oocyte together with acrosome, which does not enter cytoplasm of oocytes during normal fertilization. In mice, acrosome of sperm head has a detrimental effect on embryonic development of the ICSI oocytes (Morozumi et al. 2006 Proc. Natl. Acad. Sci. USA 103, 17 661–17 666). We examined the effect of acrosome removal of frozen/thawed (F/T) rat sperm on development to term of the ICSI oocytes in order to improve production efficiency of live offspring from F/T rat spermatozoa through ICSI. In experiment 1, epididymal spermatozoa of the Wistar rats were frozen as described previously (Seita et al. 2005 Reprod. Fertil. Dev. 18, 256 abst). The F/T spermatozoa were sonicated to separate sperm heads. The sperm heads were divided into 3 treatment groups; nontreated sperm head (control), sperm heads exposed in 0.02% of Triton X-100 solution for 1 min (TX), sperm heads exposed in 0.02% lysolectin solution for 1 min (LL). Acrosomal status of the sperm heads was then examined by FITC-peanut agglutinin stain. In experiment 2, sperm heads of the control, TX, and LL treatments were microinjected into denuded oocytes obtained from superovulated females (Hirabayashi et al. 2002 Transgenic Res. 11, 221–228). The ICSI oocytes were cultured and observed for the formation of pronuclei (2PN) for 6 h and blastocyst formation at 120 h of culture. In experiment 3, the ICSI oocytes cultured for 6 h were transferred to recipient females to examine development to term. Statistical analyses of the results were carried out by 1-way ANOVA. In experiment 1, the TX (76%) and LL (89%) treatments showed higher rates of acrosome removal than that of the control (24%) group (P < 0.05). In experiment 2, the percentage of 2PN formation at 6 h after ICSI was not significantly different among sperm-treated groups, although the TX (76%) and LL (70%) groups were higher than the control (24%) group at 4 h (P < 0.05). The percentages of blastocyst formation were not significantly different among sperm-treated groups (control: 10%; TX: 25%; and LL: 25%). In experiment 3, the efficiency of development to term of the TX treatment group (21%: 12/57) was significantly higher than the control (5%: 3/55; P < 0.05), although the LL treatment group (16%: 12/75) was not significantly different from the control and TX treatment groups. These results indicate that acrosome removal using TX of F/T rat sperm heads before ICSI improves development to term of the ICSI oocytes. This benefical effect of acrosome removal may be due to the quick release of sperm-activating factors from sperm heads after ICSI in the rat.
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Seita Y, Sugio S, Sano D, Okuda Y, Kashiwazaki N. 313 IMPROVEMENT OF FERTILIZATION IN VITRO BY PRE-INCUBATION OF FROZEN - THAWED RAT SPERMATOZOA WITH CAFFEINE-SUPPLEMENTED MEDIUM. Reprod Fertil Dev 2007. [DOI: 10.1071/rdv19n1ab313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We previously reported the successful production of live offspring from cryopreserved rat spermatozoa through IVF (2006 Reprod. Fertil. Dev. 18, 256). The objective of the present study was to improve the IVF system with frozen–thawed spermatozoa for more efficient reproduction of live offspring. We examined the effect of caffeine-supplemented medium on post-thaw sperm fertility in vitro. Epididymal spermatozoa of Wistar rats were cryopreserved in 2.0 mL of freezing medium containing 23% (v/v) egg yolk, 8.0% (w/v) lactose monohydrate, and 0.7% (v/v) Equex STM. Post-thaw spermatozoa were diluted to 0.5 to 1.5 � 106 sperm mL-1 in a droplet of 200 �L of R1ECM as the pre-incubation medium. In Experiment 1, the effect of caffeine-supplemented medium on fertility in vitro was examined. The post-thaw spermatozoa were incubated for 5 h in pre-incubation medium with added caffeine at concentrations of 0, 1, 2, and 4 mM. Ovulated oocytes were introduced into droplets of the pre-incubation medium and co-cultured for 10 h. The oocytes were denuded and fixed to examine for 2 pronuclei formation (2PNF). In Experiment 2, the effect of caffeine-supplemented medium on post-thaw sperm function was examined using the chlortetracycline (CTC) fluorescence assessment. The post-thaw spermatozoa were incubated in pre-incubation medium with added caffeine at concentrations of 0 (Caf+) and 2 mM (Caf-), and CTC patterns were examined hourly until 6 h later. Statistical analyses of the results were carried out by one-way ANOVA. In Experiment 1, the percentages of 2PNF were 14 � 6, 32 � 8, 42 � 4, and 27 � 5% for the 0, 1, 2, and 4-mM groups, respectively, and only the 2-mM group was different from the 0-mM group (P < 0.05). In Experiment 2, the rate of capacitated spermatozoa was not significantly different (P > 0.05) among incubation times in the Caf+ group, but the rates at 5 and 6 h were lower (P < 0.05) than the rate at 1 h in the Caf- group. Although the rates of acrosome-reacted spermatozoa were not significantly different (P > 0.05) in the Caf+ group after 3 h of incubation, the accelerated trend of the acrosome reaction was observed in the Caf- group with increasing incubation time. The results demonstrated that frozen–thawed rat spermatozoa pre-incubated in medium containing 2 mM caffeine could improve in vitro fertility. This positive effect of caffeine would be provided to induce and keep sperm capacitation, and to inhibit the spontaneous sperm acrosome reaction in frozen–thawed rat spermatozoa.
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Abstract
The purpose of the present study was to investigate porcine circovirus (PCV) shedding into the milk of sows. Colostrum was collected from 33 sows. PCV1 was isolated from four of 33 milk whey samples. PCV1 DNA was detected by polymerase chain reaction in three of these samples and in three of 10 milk cell samples. PCV2 was also isolated and detected from every single milk whey sample. These results showed that PCV1 and PCV2 were shed into the milk of sows and suggest that PCV can be transmitted to offspring by an oral route through milk.
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Affiliation(s)
- I Shibata
- Zen-Noh Institute of Animal Health, 7 Ohja-Machi, Sakura, Chiba 285-0043, Japan.
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Nomura R, Miyashita W, Yoneyama K, Okuda Y. Dynamics of capillary condensation in aerogels. Phys Rev E Stat Nonlin Soft Matter Phys 2006; 73:032601. [PMID: 16605581 DOI: 10.1103/physreve.73.032601] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Revised: 01/24/2006] [Indexed: 05/08/2023]
Abstract
Dynamics of capillary condensation of liquid 4He in various density silica aerogels was investigated systematically. Interfaces were clearly visible when bulk liquid was rapidly sucked into the aerogel. Time evolution of the interface positions was consistent with the Washburn model and their effective pore radii were obtained. Condensation was a single step in a dense aerogel and two steps in a low density aerogel. Crossover between the two types of condensation was observed in an intermediate density aerogel. Variety of the dynamics may be the manifestation of the fractal nature of aerogels which had a wide range of distribution of pore radii.
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Affiliation(s)
- R Nomura
- Department of Condensed Matter Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo 152-8551, Japan
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